Adapter for pin puller

Abstract

The utility model discloses a crossover coupling for a pin puller, which comprises a crossover block body, a plurality of screw grooves and nut grooves with different widths are arranged on the crossover block body, the nut grooves and the screw grooves are in one-to-one correspondence and are communicated with each other, and the width of each group of screw grooves is smaller than that of the nut grooves. The same ends of each group of screw grooves and nut grooves penetrate through the end surface of the conversion block body; the conversion block body is further provided with a connecting hole, and the connecting hole is formed in the side, opposite to the screw rod groove, of the conversion block body. The effect that one component can be matched with various types of conventionally-used dismounting bolts is achieved, the dismounting requirements of positioning pins of various specifications are met, compared with a traditional mode with multiple pulling heads, the number is greatly reduced, and the universality of the adapter is effectively improved; meanwhile, the cost is reduced, the space occupancy rate is reduced, and the portability is good; and the adapter is convenient to disassemble and assemble, and the working efficiency is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of mold auxiliary tools, and in particular relates to a conversion joint for a pin puller. Background Art

[0002] At present, locating pins with internal threads are used in the mold industry. When removing the locating pins, the disassembly bolts are first matched with the locating pins, and then removed with a pin puller. The specifications of the disassembly bolts used basically include: M4, M5, M6, M8, M10 and M12.

[0003] The structure of the pin puller includes a pulling hammer and a pulling head. The pulling hammer includes a guide rod with a pulling head assembled at one end, a collision block is arranged at the other end of the guide rod, and a counterweight block is also mounted on the guide rod.

[0004] The way to remove the locating pin with a pin puller is: first, match the puller head with the disassembly bolt, then, the counterweight block slides back and forth on the guide rod and hits the impact block. Each impact will drive the guide rod to move, and then the reciprocating impact will bring out the locating pin.

[0005] The pin puller adopting this structure has the following defects in use:

[0006] 1. Different specifications of dismantling bolts require the use of matching pull heads, resulting in a large number of pull heads, that is, the universality of the pull heads is poor;

[0007] 2. Multiple pull heads will increase costs, take up storage space, and have poor portability;

[0008] 3. If a pin puller is lost, it will affect the use of the pin puller;

[0009] 4. When removing locating pins of different specifications, it is necessary to find and replace disassembly bolts suitable for different specifications, which affects work efficiency. Utility Model Content

[0010] In view of the defects in the prior art, the utility model provides a conversion joint for a pin puller to solve the problems of large number of puller heads, poor versatility, poor portability and affected work efficiency.

[0011] The technical solution provided by the utility model is: a conversion joint for a pin puller, comprising a conversion block, on which a plurality of screw grooves and nut grooves of different widths are arranged, the nut grooves and the screw grooves are in one-to-one correspondence and are connected to each other, the width of each group of the screw grooves is smaller than the width of the nut grooves, and the same end of each group of the screw grooves and the nut grooves passes through the end surface of the conversion block;

[0012] The conversion block is also provided with a connection hole, and the connection hole is arranged on the conversion block on the side opposite to the screw groove.

[0013] As an improvement, the conversion block is configured to be square, the interconnected screw grooves and nut grooves are sequentially arranged on adjacent surfaces of the conversion block, and a connecting hole is provided on the conversion block on the opposite side of each screw groove.

[0014] As a further improvement, the conversion block is a cube with an even number of faces; and the connecting hole is a threaded hole.

[0015] As an improvement, the length of the screw groove of each group is smaller than the length of the nut groove.

[0016] As a further improvement, the other end of the nut slot is also set through.

[0017] As an improvement, the other end of the screw groove is configured to be arc-shaped.

[0018] As a further improvement, each corner of the conversion block is configured as a first inclined surface or a first arcuate surface.

[0019] As an improvement, each corner corresponding to the screw groove and the nut groove is arranged as a second inclined surface or a second arc surface.

[0020] As an improvement, the connection hole is centrally arranged on the conversion block.

[0021] As an improvement, the conversion block is a die steel conversion block or a stainless tool steel conversion block.

[0022] By adopting the above-mentioned technical solution, the conversion joint for a pin puller provided by the utility model has the following beneficial effects:

[0023] When using the conversion joint for the pin puller, the screw groove and nut groove to be matched with the dismantling bolt are selected according to the model of the dismantling bolt that matches the locating pin, and then the connecting hole on the conversion block on the opposite side of the selected screw groove is matched with the guide rod on the pulling hammer, thereby completing the assembly of the conversion block on the pin puller; then, the dismantling bolt is allowed to enter through the through ends of the screw groove and the nut groove and match (the nut is located in the nut groove and the screw is located in the screw groove), and then the counterweight block hits the collision block and brings out the locating pin; if the locating pins of other specifications are to be removed, it is only necessary to select the appropriate screw groove and nut groove, and install the connecting holes opposite to each other with the guide rod, and then the counterweight block can complete the removal work.

[0024] To sum up, the use of the conversion joint for the pin puller achieves the effect of one component being able to cooperate with various types of commonly used disassembly bolts, meeting the removal needs of locating pins of various specifications. Compared with the traditional method of multiple pulling heads, the number has been greatly reduced, effectively improving the versatility of the conversion joint; at the same time, it reduces costs, saves space occupancy, and has good portability; and the conversion joint is easy to disassemble and assemble, and work efficiency is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0026] Figure 1 It is a structural schematic diagram of the utility model;

[0027] Figure 2 yes Figure 1 A schematic diagram of the structure from another angle;

[0028] In the figure, 1-conversion block; 2-screw groove; 3-nut groove; 4-connection hole; 5-avoidance and weight reduction hole; 6-first inclined surface; 7-second inclined surface. DETAILED DESCRIPTION

[0029] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0030] like Figure 1 and Figure 2 As shown together, a conversion joint for a pin puller includes a conversion block 1, on which are provided a plurality of screw grooves 2 of different widths and a plurality of nut grooves 3 of different widths, the nut grooves 3 corresponding to the screw grooves 2 one by one and connected to each other, the width of each group of screw grooves 2 is smaller than the width of the nut grooves 3, and the same end of each group of screw grooves 2 and nut grooves 3 passes through the end face of the conversion block 1; the conversion block 1 is also provided with a connecting hole 4, which is arranged on the conversion block 1 on the opposite side of the screw groove 2, and the connecting hole 4 is a threaded hole.

[0031] The conversion block 1 is a square cube with an even number of faces. In the present embodiment, the conversion block 1 is a cube with six faces. Of course, more than six faces can be provided. The connection holes 4, screw grooves 2 and nut grooves 3 provided on the six faces can meet the requirements of commonly used disassembly bolt specifications, that is: as shown in the accompanying drawings, the screw grooves 2 and nut grooves 3 with the smallest width are suitable for disassembly bolts of M4 and M5, the screw grooves 2 and nut grooves 3 with the middle width are suitable for disassembly bolts of M6 and M8, and the screw grooves 2 and nut grooves 3 with the largest width are suitable for disassembly bolts of M10 and M12; the screw grooves 2 and nut grooves 3 connected to each other are arranged in sequence on adjacent faces of the conversion block 1, and a connection hole 4 is provided on the conversion block 1 on the opposite side of each screw groove 2.

[0032] The length of the screw groove 2 of each group is smaller than the length of the nut groove 3. Preferably, the other end of the nut groove 3 extends straight and passes through the other end of the conversion block 1 to avoid the removal of the nut on the bolt and effectively reduce the weight of the conversion block 1.

[0033] The other end of the screw groove 2 is non-through and is set to an arc shape, so that it has a high degree of adaptability with the screw on the disassembly bolt, plays a role in positioning and limiting, and is conducive to the operation of the pin puller; through the above structure, at the through end of the conversion block 1, the interconnected screw groove 2 and nut groove 3 form a T-shaped structure, and the non-through end forms an avoidance and weight reduction hole 5; in this embodiment, the nut groove 3 and the avoidance and weight reduction hole 5 are set to be square.

[0034] In order to avoid the corners of the conversion block 1 being set as sharp points, which may pose a safety hazard such as hand injury, each corner of the conversion block 1 is set as a first inclined surface 6 or a first curved surface; each corner at the corresponding position of the screw groove 2 and the nut groove 3 is set as a second inclined surface 7 or a second curved surface.

[0035] The connecting hole 4 is centrally arranged on the conversion block 1, preferably, at the midpoint of the end face of the conversion block 1, so that when the pin puller is working, the force acting on the conversion block 1 is evenly and reasonably distributed, which is not only conducive to the removal of the positioning pin, but also serves as a protection for the conversion block 1.

[0036] The conversion block 1 is a die steel conversion block or a stainless tool steel conversion block to ensure that the conversion block 1 has the advantages of corrosion resistance, high hardness and long service life.

[0037] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some or all of the technical features can be replaced by equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A conversion joint for a pin puller, comprising a conversion block, characterized in that: The conversion block is provided with a plurality of screw grooves and nut grooves of different widths, the nut grooves correspond to the screw grooves one by one and are connected to each other, the width of each group of the screw grooves is smaller than the width of the nut grooves, and the same end of each group of the screw grooves and the nut grooves passes through the end surface of the conversion block; The conversion block is also provided with a connection hole, and the connection hole is arranged on the conversion block on the side opposite to the screw groove.

2. The conversion joint for a pin puller according to claim 1, characterized in that: The conversion block is arranged in a square shape, the screw grooves and the nut grooves which are interconnected are arranged in sequence on adjacent surfaces of the conversion block, and a connecting hole is arranged on the conversion block on the opposite side of each screw groove.

3. The conversion joint for a pin puller according to claim 2, characterized in that: The conversion block is a cube with an even number of faces; and the connection hole is a threaded hole.

4. The conversion joint for a pin puller according to claim 1, characterized in that: The length of the screw groove of each group is smaller than the length of the nut groove.

5. The conversion joint for a pin puller according to claim 4, characterized in that: The other end of the nut groove is also arranged to penetrate.

6. The conversion joint for a pin puller according to claim 1, characterized in that: The other end of the screw groove is arranged in an arc shape.

7. The conversion joint for a pin puller according to claim 2, characterized in that: Each corner of the conversion block is arranged as a first inclined surface or a first arc surface.

8. The conversion joint for a pin puller according to claim 1, characterized in that: Each corner corresponding to the screw groove and the nut groove is arranged as a second inclined surface or a second arc surface.

9. The conversion joint for a pin puller according to claim 1, characterized in that: The connection hole is centrally arranged on the conversion block.

10. The conversion joint for a pin puller according to claim 1, characterized in that: The conversion block is a die steel conversion block or a stainless tool steel conversion block.

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