Connection tools include ring compression molds, clamping mechanisms, and clamping pipe connection tools

Abstract

The present application particularly relates to connection tools include ring compression molds, clamping mechanisms, and clamping pipe connection tools. The ring compression mold is used to fit with calipers of the connection tool, including: a fixed mold and a movable mold group, which contains movable molds arranged on both sides of the fixed mold. A crimping hole for a crimping target to pass through is formed in the enclosure between the fixed mold and the movable mold group, a spherical groove for the ring mold to fit with the calipers is provided on the end of the movable mold away from the fixed mold, and the edge of the ring mold spherical groove is provided with a ring mold clearance groove and ring mold convex portions located on both sides of the ring mold clearance groove.

What is claimed is: 
     
         1 . A ring compression mold for connection tool to cooperate with calipers of the connection tool, comprising:
 a fixed mold,   a movable mold group, which contains movable molds arranged on both sides of the fixed mold,   a crimping hole for a crimping target to pass through is formed in the enclosure between the fixed mold and the movable mold group, and   a spherical groove for the ring mold to fit with the calipers is provided on the end of the movable mold away from the fixed mold, the edge of the ring mold spherical groove is provided with a ring mold clearance groove and ring mold convex portions located on both sides of the ring mold clearance groove.   
     
     
         2 . The ring compression mold for connection tool of  claim 1 , wherein the bottom of the ring mold clearance groove has an inclined arc surface, and the edge of the ring mold spherical groove is also provided with a ring mold avoidance groove, which is located on the opposite side of the ring mold clearance groove. 
     
     
         3 . The ring compression mold for connection tool of  claim 1 , wherein the fixed mold is integrated, with a fixed mold groove formed on the side facing the crimping hole, the fixed mold groove has a pair of fixed mold convex edges and a fixed mold acting surface which is located between the pair of fixed mold convex edges and recessed; and the movable mold is integrated, with a movable mold groove formed on the side facing the crimping hole, the movable mold groove has a pair of movable mold convex edges and a movable mold acting surface which is located between the pair of fixed mold convex edges and recessed. 
     
     
         4 . The ring compression mold for connection tool of  claim 2 , wherein the fixed mold is integrated, with a fixed mold groove formed on the side facing the crimping hole, the fixed mold groove has a pair of fixed mold convex edges and a fixed mold acting surface which is located between the pair of fixed mold convex edges and recessed; and the movable mold is integrated, with a movable mold groove formed on the side facing the crimping hole, the movable mold groove has a pair of movable mold convex edges and a movable mold acting surface which is located between the pair of fixed mold convex edges and recessed. 
     
     
         5 . The ring compression mold for connection tool of  claim 1 , wherein the movable mold comprises:
 a movable mold pressing seat, one end of which is rotatably connected to the fixed mold, the other end of which is provided with a ring mold spherical groove, and the side of which facing the crimping hole is provided with an arc-shaped guide chute;   a movable mold pressing segment, which is movably arranged on the movable mold pressing seat and formed with an arc-shaped guide slider that matches the arc-shaped guide chute, and the arc-shaped guide slider is also provided with a limiting notch along the arc direction;   a blocking member, which is inserted at the end of the movable mold pressing seat away from the fixed mold, and it axially penetrates through the arc-shaped guide chute to block one end of the arc-shaped guide slider;   a limiting member, which is inserted on the movable mold pressing seat, and axially penetrates through the limiting notch;   an elastic member, which is installed in the limiting notch; and   a steel ball, one end of which is abutted against the elastic member, and the other end of which is abutted against the limiting member;   the arc length of the arc-shaped guide slider is smaller than that of the arc-shaped guide chute.   
     
     
         6 . The ring compression mold for connection tool of  claim 2 , wherein the movable mold comprises:
 a movable mold pressing seat, one end of which is rotatably connected to the fixed mold, the other end of which is provided with a ring mold spherical groove, and the side of which facing the crimping hole is provided with an arc-shaped guide chute;   a movable mold pressing segment, which is movably arranged on the movable mold pressing seat and formed with an arc-shaped guide slider that matches the arc-shaped guide chute, and the arc-shaped guide slider is also provided with a limiting notch along the arc direction;   a blocking member, which is inserted at the end of the movable mold pressing seat away from the fixed mold, and it axially penetrates through the arc-shaped guide chute to block one end of the arc-shaped guide slider;   a limiting member, which is inserted on the movable mold pressing seat, and axially penetrates through the limiting notch;   an elastic member, which is installed in the limiting notch; and   a steel ball, one end of which is abutted against the elastic member, and the other end of which is abutted against the limiting member;   the arc length of the arc-shaped guide slider is smaller than that of the arc-shaped guide chute.   
     
     
         7 . The ring compression mold for connection tool of  claim 5 , wherein the movable mold pressing seat and the movable mold pressing segment are provided with corresponding inspection markings; and the bottom of the arc-shaped guide chute protrudes to one side to form a limiting groove, and the outer end portion of the arc-shaped guide slider protrudes to one side to form a limiting convex edge embedded in the limiting groove. 
     
     
         8 . The ring compression mold for connection tool of  claim 6 , wherein the movable mold pressing seat and the movable mold pressing segment are provided with corresponding inspection markings; and the bottom of the arc-shaped guide chute protrudes to one side to form a limiting groove, and the outer end portion of the arc-shaped guide slider protrudes to one side to form a limiting convex edge embedded in the limiting groove. 
     
     
         9 . The ring compression mold for connection tool of  claim 5 , wherein a pair of plugboards are respectively formed at both ends of the fixed mold pressing seat, the sides of the movable mold pressing seats which are located at both ends of the fixed mold pressing seat and face to one side of the fixed mold pressing seat are respectively provided with a pair of slots for inserting the plugboards, and
 the rotating ends of the movable mold pressing seat and the fixed mold pressing seat are also provided with a limiting assembly; the limiting assembly comprises:   cylindrical locating pins, which are inserted into the plugboards at both ends of the fixed mold pressing seat; and   a limiting plugboard, which is formed between a pair of slots in the movable mold pressing seat, and limit protrusions are provided at the outer end of the limiting plugboard to fit with the cylindrical locating pins.   
     
     
         10 . The ring compression mold for connection tool of  claim 6 , wherein a pair of plugboards are respectively formed at both ends of the fixed mold pressing seat, the sides of the movable mold pressing seats which are located at both ends of the fixed mold pressing seat and face to one side of the fixed mold pressing seat are respectively provided with a pair of slots for inserting the plugboards, and
 the rotating ends of the movable mold pressing seat and the fixed mold pressing seat are also provided with a limiting assembly; the limiting assembly comprises:   cylindrical locating pins, which are inserted into the plugboards at both ends of the fixed mold pressing seat; and   a limiting plugboard, which is formed between a pair of slots in the movable mold pressing seat, and limit protrusions are provided at the outer end of the limiting plugboard to fit with the cylindrical locating pins.   
     
     
         11 . The ring compression mold for connection tool of  claim 3 , wherein a first notch is provided at one end of the fixed mold close to the movable mold, a second notch is provided at one end of the movable mold close to the fixed mold, and a first dust storage groove is formed between the first notch and the second notch. 
     
     
         12 . A clamping mechanism for connection tool, wherein it is clamped on a crimping target to crimp the crimping target, comprising:
 calipers, having a pair of tong arms,   a ring compression mold, which is detachably installed on the calipers,   the ring compression mold is that for connection tool of  claim 1 , the pair of tong arms are provided with a spherical mating portion which fits with the ring mold spherical groove, and one side of the spherical mating portion is provided with a caliper clearance groove for avoiding the convex portion.   
     
     
         13 . A clamping pipe connection tool, comprising:
 a driving portion,   a clamping mechanism, which is the clamping mechanism for connection tool of claim  12 ,   the calipers are installed on the driving part to operate driven by the driving portion.   
     
     
         14 . The clamping pipe connection tool of  claim 13 , comprising a pressing ring, which is provided with a pair of symmetrically arranged pressing ring arms, and the pair of pressing ring arms enclose to form a ring pressing hole for the crimping target to pass through; the ends of the pair of pressing ring arms are hinged to each other, the other ends of them are separately arranged, and the separated ends are provided with a pressing ring spherical groove that fits with the spherical mating portion; the edge of the pressing ring spherical groove is provided with a pressing ring clearance groove and pressing ring convex portions located on both sides of the pressing ring clearance groove; and one of the ring compression mold and the pressing ring is selected to be rotatably installed on the calipers for operation. 
     
     
         15 . The clamping pipe connection tool of  claim 14 , wherein the pressing ring is also provided with:
 a hinge pin, which is used to rotatably connect the ends for a pair of pressing ring arms together, and   a torsion spring, which is sleeved on the hinge pin to act on the pair of pressing ring arms respectively,   the pressing ring arm is provided with a hinged end, on which rotating plates are provided to plug the pair of pressing ring arms together, a limiting convex edge protrudes outward on the rotating plate to limit the rotation angle,   third notches are correspondingly provided in the middle part of the pair of pressing ring arms on the side of the first crimping hole, and a second dust storage groove trough is formed between the two third notches.   
     
     
         16 . The clamping pipe connection tool of  claim 13 , wherein the calipers comprise:
 a pair of tong arms, having operating ends, on which a spherical mating portion is provided;   a pair of connecting plates, which are used for connecting the middle parts of the pair of tong arms together, and the tong arms rotate relative to the connecting plates; and   a pair of connecting pins, which are used for connecting the tong arms to the connecting plates.   
     
     
         17 . The clamping pipe connection tool of  claim 16 , wherein driving ends are formed at the ends of the tong arms away from the operating ends, and the two driving ends have a separated state and a closed state, the driving portion comprises:
 a main body,   a pair of rollers, which are movably arranged on the main body to act on the driving ends for the pair of tong arms, causing the two driving ends to separate from each other; and   a mounting seat, which is used for mounting the calipers, when the driving ends are in the closed state, the outer sides of the driving ends protrude from the outer periphery of the mounting seat.