CN216850697U - Convenient to use's pneumatic crimping tool - Google Patents

Abstract

The utility model discloses a pneumatic crimping tool convenient to use, which comprises a cover body, wherein the front end of the cover body is a crimping position, a clamp shaft is fixedly arranged on the crimping position, four mounting grooves which are arranged in a cross shape are arranged on the clamp shaft, the intersection centers of the mounting grooves are crimping holes, and clamp teeth are arranged in each mounting groove; a pressing tooth cover plate is further arranged on the pressing position and fixed on the clamp shaft, and a through hole is formed in the middle of the pressing tooth cover plate and is opposite to the pressing hole; a groove is formed in the middle of the pressing tooth cover plate, the through hole is located at the bottom of the groove, and the distance between the bottom surface of the groove and the pressing hole is smaller than the distance between the top surface of the pressing tooth cover plate and the pressing hole. The groove is formed in the pressing tooth cover plate, so that the depth of the through hole is reduced, the pressing state of the pressing hole is convenient to observe, the terminal is convenient to place, and the pressing working difficulty is reduced.

Description

Convenient to use's pneumatic crimping tool

Technical Field

The utility model relates to the technical field of crimping tools, in particular to a pneumatic crimping tool convenient to use.

Background

The electrical connector consists of a fixed end electrical connector, i.e., a female contact (referred to as a socket for short), and a free end electrical connector, i.e., a male contact (referred to as a plug for short). The socket is fixed on the electric part through a square (round) plate (a welding mode is adopted individually), the plug is generally connected with a conducting wire, and the connection of the plug and the socket is realized through a connecting nut. The plug terminal and the lead are fixed by a crimping tool, the round tubular terminal is placed in a crimping position of the crimping tool, a clamp shaft is arranged in the crimping position, a crimping hole is formed in the middle of the clamp shaft, a plurality of clamp teeth are installed in the clamp shaft, the front ends of the clamp teeth are crimping parts, the crimping parts of the clamp teeth can stretch into the crimping hole to be crimped, and different terminals can be selected from clamp shafts of different specifications.

General crimping tool can be equipped with the locator, and the locator is installed at the pincers axle back, and the locating lever in the locator can stretch into the pincers axle, is located the below of pincers tooth front end time crimping position, and the locating lever top can be equipped with the locating hole, conveniently places the terminal. The pincers axle openly has a apron for the position of spacing pincers axle and pincers tooth, then have a through-hole in the middle of the apron, the through-hole is just to the locating hole, and the terminal can pass the through-hole of apron, places in the locating hole, then puts into the terminal to the wire, and the pincers tooth inwards extrudes the concave point with the pipe of terminal, thereby links together plug terminal and wire. Because the apron is fixed on the pincers axle, the pincers tooth is installed in the pincers axle, and the locating hole of locator is located pincers tooth front end below, so have certain difference in height between the through-hole of apron and the locating hole of locator, when putting the terminal, can't see the locating hole usually, rely on the sensation to put blindly, and there are many terminal specifications to be smaller now, must be more careful when placing, it is very time-consuming, and it puts askewly still to appear the terminal easily, crimping dislocation scheduling problem, influence the quality of product.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the utility model provides the pneumatic crimping tool which is convenient to use, has a simple structure, can be used for placing the terminal while observing the position of the positioning hole, is time-saving and labor-saving, and ensures the crimping quality of the terminal.

Therefore, the technical scheme of the utility model is as follows: a pneumatic crimping tool convenient to use comprises a cover body, wherein the front end of the cover body is a crimping position, a clamp shaft is fixedly mounted on the crimping position, four mounting grooves which are arranged in a cross shape are formed in the clamp shaft, a crimping hole is formed in the center where the mounting grooves intersect, and clamp teeth are mounted in each mounting groove; a pressing tooth cover plate is further arranged on the pressing position and fixed on the clamp shaft, a through hole is formed in the middle of the pressing tooth cover plate, and the through hole is opposite to the pressing hole; the middle of the pressing tooth cover plate is provided with a groove, the through hole is positioned at the bottom of the groove, and the distance between the bottom surface of the groove and the pressing hole is smaller than the distance between the top surface of the pressing tooth cover plate and the pressing hole.

Originally, press the tooth apron to be the unchangeable circular structure of a thickness, the degree of depth of through-hole is unanimous with the thickness of pressing tooth apron itself, and then the through-hole diameter ratio is less, can't directly see the crimping hole from the top. Set up sunken recess in the middle of the pressure tooth apron, and the through-hole is located the tank bottom of recess for the degree of depth of through-hole reduces, thereby makes the crimping hole clear visible, conveniently places the terminal, is convenient for observe the crimping state, improves crimping efficiency and quality.

Preferably, the pressing tooth cover plate is of a circular structure, a fixing hole is formed in the pressing tooth cover plate and located on the outer side of the groove, and the pressing tooth cover plate is fixedly connected with the clamp shaft through screws. The pressure tooth cover plate is fixed on the clamp shaft through a screw, and can press the clamp teeth in the mounting groove of the clamp shaft to prevent the clamp teeth from falling off.

Preferably, the groove is of an inverted frustum-shaped structure, an opening above the groove is larger than the bottom surface of the groove, and the side wall of the groove is an inclined surface. The radial section of the groove is in an inverted trapezoid shape, so that the compression joint state can be observed conveniently.

Preferably, the side of the clamp shaft facing the tooth pressing cover plate is provided with mounting grooves which are arranged in a cross shape, and a positioning pin is fixed in each mounting groove; the clamp teeth are of a long and thin structure, the front ends of the clamp teeth are provided with crimping parts, one sides of the clamp teeth, facing the mounting groove, are provided with sliding grooves, the positioning pins are arranged in the sliding grooves, and the clamp teeth can move along the mounting groove; a first spring is arranged in the sliding groove, one end of the first spring abuts against the locating pin, and the other end of the first spring abuts against the tail end of the sliding groove. The tong teeth are arranged in the mounting grooves on the top surface of the tong shaft, and the tong teeth are connected with the mounting grooves through tooth pressing cover plates. Different tong teeth can the crimping different grade type terminal, when changing the tong tooth, only need take off the pressure tooth apron, can change the tong tooth, convenient and fast.

Preferably, the clamp also comprises a push block, a clamp handle and a power assembly, wherein the push block is connected with the power assembly, an inclined chute is arranged on the push block, a bearing is arranged at the tail end of the clamp handle, and the bearing is arranged in the chute of the push block; the front end of the clamp handle is provided with a movable hole, the clamp shaft is arranged in the movable hole, and the clamp handle can be driven by the push block to rotate around the clamp shaft.

Preferably, the edge of the movable hole of the clamp handle is uniformly divided into four crimping track surfaces, and the distances from each point on each crimping track surface to the circle center are different; the rear ends of the forceps teeth abut against the crimping track surface of the forceps handle, when the forceps handle rotates, the forceps teeth move in the mounting groove of the forceps shaft under the action of the crimping track surface, and the front ends of the forceps teeth extend into the crimping holes and move oppositely. The crimping track surface is provided with a starting position, the starting position is farthest away from the circle center, then the crimping track surface slowly inclines inwards, and the distance from each point to the circle center is gradually reduced.

The front end of each clamp tooth is a crimping part, the rear end of each clamp tooth is under the action of a first spring and abuts against a crimping track surface of the clamp handle, and because the distance between each point on the crimping track surface of the clamp handle and the circle center is different, when the clamp handle rotates, the position of the upper contact between each clamp tooth and the crimping track surface changes, so that the four clamp teeth synchronously move to the center, and the crimping part at the front end of each clamp tooth starts crimping the terminal.

Preferably, the power assembly comprises a connecting cylinder, the front end of the connecting cylinder is fixedly connected with the cover body through a connecting sleeve, and the rear end of the connecting cylinder is provided with a ventilation interface; a piston which is tightly matched with the connecting cylinder is arranged in the connecting cylinder, the piston is fixedly connected with the push block, and a second spring is arranged at the front end of the piston. The connecting cylinder is directly connected with the ventilation equipment, the piston is pushed by air pressure, the piston moves forwards and pushes the push block to move towards the crimping position direction, and the clamp handle is driven to complete crimping work.

Compared with the prior art, the utility model has the beneficial effects that: the grooves are formed in the tooth pressing cover plate, so that the depth of the through hole is reduced, the pressing state of the pressing hole is convenient to observe, a terminal is convenient to place, and the pressing work difficulty is reduced; the pliers teeth have simple structure and convenient assembly and disassembly, are convenient to replace pliers teeth with different structures, and are suitable for crimping work of different terminals.

Drawings

The following detailed description of the embodiments of the utility model is made with reference to the accompanying drawings

FIG. 1 is a schematic view of the structure of the present invention;

FIG. 2 is a schematic structural view of a clamp shaft and a tooth pressing cover plate;

FIG. 3 is a cross-sectional view of the structure of FIG. 2;

FIG. 4 is a schematic view of the installation of the jaw teeth;

FIG. 5 is a schematic view of the installation of the clamp handle and the push block;

fig. 6 is a structural sectional view of the present invention.

Labeled in the figure as: the clamp comprises a cover body 1, a clamp shaft 2, a mounting groove 21, a crimping hole 22, a positioning pin 23, clamp teeth 3, a crimping part 31, a sliding groove 32, a first spring 33, a clamp tooth cover plate 4, a fixing hole 41, a groove 42, a through hole 43, a push block 5, a sliding groove 51, a clamp handle 6, a movable hole 61, a starting part 62, a power assembly 7, a connecting cylinder 71, a ventilation interface 72, a piston 73 and a second spring 74.

Detailed Description

In the description of the present invention, it should be noted that, for the terms of orientation, such as "central", "lateral (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate that the orientation and positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific scope of the present invention.

Furthermore, if any, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features. Thus, a definition of "a first" or "a second" feature may explicitly or implicitly include one or more of the features, and in the description of the utility model, "a number" or "a number" means two or more unless explicitly specified otherwise.

See the drawings. The pneumatic crimping tool comprises a crimping component and a power component, wherein the crimping component comprises a cover body 1, the front end of the cover body is a crimping position, a clamp shaft 2 is fixedly installed on the crimping position, four installation grooves 21 which are arranged in a cross shape are formed in the clamp shaft, a crimping hole 22 is formed in the center where the installation grooves intersect, and a clamp tooth 3 is installed in each installation groove 21; a pressing tooth cover plate 4 is further arranged on the pressing position, the pressing tooth cover plate 4 is of a circular structure, a fixing hole 41 is formed in the pressing tooth cover plate, and the pressing tooth cover plate 4 is fixedly connected with the clamp shaft 2 through a screw; a groove 42 is arranged in the middle of the tooth pressing cover plate 4, the groove is of an inverted frustum-shaped structure, an opening above the groove is larger than the bottom surface of the groove, and the side wall of the groove is an inclined surface; a through hole 43 is formed in the middle of the bottom surface of the recess 42, and the through hole 43 is opposed to the crimp hole 22. The distance H2 between the bottom surface of the groove and the crimping hole is smaller than the distance H1 between the top surface of the press tooth cover plate and the crimping hole.

Originally, press the tooth apron to be the unchangeable circular structure of a thickness, the degree of depth of through-hole is unanimous with the thickness of pressing tooth apron itself, is H1, and then the through-hole diameter is smaller again, and light is sheltered from by the through-hole, can't follow the top and directly observe the crimping hole. Set up sunken recess in the middle of the present pressure tooth apron, and the through-hole is located the tank bottom of recess for the degree of depth of through-hole reduces to H2, thereby makes the crimping hole clear visible, conveniently places the terminal, is convenient for observe the crimping state, improves crimping efficiency and quality.

One side of the clamp shaft 2, which faces the tooth pressing cover plate, is provided with mounting grooves 21 which are arranged in a cross shape, and a positioning pin 23 is fixed in each mounting groove 21; the clamp tooth 3 is of a long and thin structure, the front end of the clamp tooth is a pressing part 31, a sliding groove 32 is formed in one side, facing the installation groove, of the clamp tooth, the positioning pin 23 is arranged in the sliding groove 32, and the clamp tooth can move along the installation groove; the pressing tooth cover plate is fixed on the clamp shaft through a screw, and can press the clamp teeth in the mounting groove of the clamp shaft to prevent the clamp teeth from falling off; a first spring 33 is arranged in the sliding groove 32, one end of the first spring 33 abuts against the positioning pin 23, and the other end of the first spring 33 abuts against the tail end of the sliding groove. Different tong teeth can the crimping different grade type terminal, when changing the tong tooth, only need take off the pressure tooth apron, can change the tong tooth, convenient and fast.

The crimping assembly further comprises a push block 5 and a clamp handle 6, the push block 5 and the clamp handle 6 are installed in the cover body 1, the push block 5 is connected with the power assembly 7, an inclined sliding groove 51 is formed in the push block 5, and a bearing is installed at the tail end of the clamp handle 6 and is arranged in the sliding groove of the push block; the front end of the clamp handle 6 is provided with a movable hole 61, the clamp shaft is arranged in the movable hole, and the clamp handle 6 can be driven by the push block 5 to rotate around the clamp shaft 2. The movable hole of the clamp handle 6 is not circular, the edge of the movable hole is divided into four same crimping track surfaces, the crimping track surfaces are provided with starting positions 62, the starting positions are farthest away from the circle center, then the crimping track surfaces slowly incline inwards, and the distance from each point to the circle center is gradually reduced.

In the initial stage, the tail end of the forceps tooth 3 abuts against the starting position 62 of the crimping track surface, the crimping part at the front end of the forceps tooth does not extend into the crimping hole, a terminal can be placed in the crimping hole, the tail end of the forceps handle 6 inclines upwards along with the forward movement of the push block 5, the front end rotates around the forceps shaft 2, and in the rotating process, the tail end of the forceps tooth is pressed by the crimping track surface and moves towards the crimping hole, so that the crimping part at the front end of the forceps tooth extends into the crimping hole and crimps the terminal. The movable hole is provided with four same crimping track surfaces, so that the four forceps teeth synchronously move towards the crimping hole in the center, and the crimping part at the front ends of the forceps teeth crimp the terminal.

The power assembly 7 is a power source of a crimping tool and comprises a connecting cylinder 71, the front end of the connecting cylinder is fixedly connected with the cover body 1 through a connecting sleeve, and the rear end of the connecting cylinder is provided with a ventilation interface 72; a piston 73 which is tightly matched with the connecting cylinder is arranged in the connecting cylinder, the piston is fixedly connected with the push block 5, and the front end of the piston is provided with a second spring 74. The connecting cylinder is directly connected with a ventilation device, the piston 73 is pushed by air pressure, the piston 73 moves forwards and pushes the push block 5 to move towards the compression joint position direction, and the clamp handle 6 is driven to complete compression joint work.

When the terminal crimping tool works, the terminal is placed into the crimping hole from the through hole of the tooth pressing cover plate, then the wire is placed, the crimping hole can be observed through the groove in the tooth pressing cover plate, and the wire is more convenient to place; the power component ventilates, and atmospheric pressure promotes the piston, and the piston moves forward and promotes the ejector pad, and when the ejector pad removed, the pincers handle end was driven by the spout, and whole pincers handle rotated around the pincers axle for the pincers tooth in the pincers axle moves to pincers axle center department under the effect of crimping orbit face, and the crimping state can be observed through pressing the recess on the tooth apron to the crimping terminal that begins, guarantees the crimping quality.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the utility model may occur to those skilled in the art without departing from the principle of the utility model, and are considered to be within the scope of the utility model.

Claims (7)

1. A pneumatic crimping tool convenient to use comprises a cover body, wherein the front end of the cover body is a crimping position, a clamp shaft is fixedly arranged on the crimping position, four installation grooves which are arranged in a cross shape are arranged on the clamp shaft, a crimping hole is formed in the center where the installation grooves intersect, and a clamp tooth is arranged in each installation groove; the method is characterized in that: a pressing tooth cover plate is further arranged on the pressing position and fixed on the clamp shaft, a through hole is formed in the middle of the pressing tooth cover plate, and the through hole is opposite to the pressing hole; the middle of the pressing tooth cover plate is provided with a groove, the through hole is positioned at the bottom of the groove, and the distance between the bottom surface of the groove and the pressing hole is smaller than the distance between the top surface of the pressing tooth cover plate and the pressing hole.

2. A user friendly pneumatic crimping tool as claimed in claim 1, wherein: the pressing tooth cover plate is of a circular structure, a fixing hole is formed in the pressing tooth cover plate and located on the outer side of the groove, and the pressing tooth cover plate is fixedly connected with the clamp shaft through screws.

3. A user friendly pneumatic crimping tool as claimed in claim 1, wherein: the groove is of an inverted frustum-shaped structure, an opening above the groove is larger than the bottom surface of the groove, and the side wall of the groove is an inclined surface.

4. A user friendly pneumatic crimping tool as claimed in claim 1, wherein: the side of the clamp shaft, which faces the tooth pressing cover plate, is provided with mounting grooves which are arranged in a cross shape, and a positioning pin is fixed in each mounting groove; the clamp teeth are of a long and thin structure, the front ends of the clamp teeth are provided with crimping parts, one sides of the clamp teeth, facing the mounting groove, are provided with sliding grooves, the positioning pins are arranged in the sliding grooves, and the clamp teeth can move along the mounting groove; a first spring is arranged in the sliding groove, one end of the first spring abuts against the locating pin, and the other end of the first spring abuts against the tail end of the sliding groove.

5. A user friendly pneumatic crimping tool as in claim 4 wherein: the clamp comprises a push block, a clamp handle and a power assembly, wherein the push block is connected with the power assembly, an inclined chute is formed in the push block, a bearing is mounted at the tail end of the clamp handle, and the bearing is arranged in the chute of the push block; the front end of the clamp handle is provided with a movable hole, the clamp shaft is arranged in the movable hole, and the clamp handle can be driven by the push block to rotate around the clamp shaft.

6. A convenient to use pneumatic crimping tool as claimed in claim 5, wherein: the movable hole edge of the clamp handle is uniformly divided into four crimping track surfaces, and the distances from each point on each crimping track surface to the circle center are different; the rear ends of the forceps teeth abut against the crimping track surface of the forceps handle, when the forceps handle rotates, the forceps teeth are acted by the crimping track surface and move in the mounting groove of the forceps shaft, and the front ends of the forceps teeth stretch into the crimping holes and move oppositely.

7. A user friendly pneumatic crimping tool as in claim 5 wherein: the power assembly comprises a connecting cylinder, the front end of the connecting cylinder is fixedly connected with the cover body through a connecting sleeve, and the rear end of the connecting cylinder is provided with a ventilation interface; a piston which is tightly matched with the connecting cylinder is arranged in the connecting cylinder, the piston is fixedly connected with the push block, and a second spring is arranged at the front end of the piston.

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