A pin anti-falling structure for automobile parts mold

Abstract

The present invention discloses a pin anti-falling structure of an automobile part mold, comprising a first mold, a first pin hole groove is provided on one side of the first mold, one end of a fixed pin is engaged with the first pin hole groove, the fixed pin comprises a fixed tail post, a cylindrical fixed pin body and a conical head, one side of the fixed tail post is fixedly connected with the cylindrical fixed pin body, the cylindrical fixed pin body is fixedly connected with the conical head away from the fixed tail post, a second mold is arranged on a side of the first mold close to the first engaging plate, and a second pin hole groove is provided on a side of the second mold away from the first mold. The present invention solves the problem that if the gap between the set pin hole and the pin is too large, the pin is easily caused to fall off, resulting in the movement of the working part, further causing damage to the working part of the mold, and making the mold unable to produce normally; if, in order to prevent the pin from falling off, the pin and the pin hole are set to a tight fit relationship, the pin is not convenient to be inserted into the pin hole, thereby improving the practicality of the structure.

Description

Technical Field

[0001] The invention relates to the field of pins, in particular to a pin anti-falling structure of an automobile part mould. Background Art

[0002] Pins are usually cylindrical parts made of wood, metal or other materials, especially used to fix several separate objects together or as a support for one object to be suspended on another object. The shape of the pin is cylindrical at one end and conical at the other end, similar to the shape of a bullet. It is one of the commonly used fasteners in modern mechanical equipment. The diameter of the cylindrical surface is an important data to distinguish its specifications.

[0003] In a mold for producing automobile parts, pins are required to be used for positioning when connecting the two working parts of the mold. For example, when the upper working part of the mold is connected to the upper mold body, if the gap between the pin hole and the pin is too large, the pin may easily fall off, causing the working part to move, further damaging the working part of the mold and making it impossible for the mold to produce normally. If, in order to prevent the pin from falling off, the pin and the pin hole are set to a tight fit, it is inconvenient to insert the pin into the pin hole. Therefore, we have made improvements to this and proposed a pin anti-falling structure for automobile parts molds. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0005] The present invention discloses a pin anti-dropping structure for an automobile part mold, comprising:

[0006] A first mold, wherein a first pin hole groove is provided on one side of the first mold, and a plurality of evenly distributed first clamping plates are provided on the other side of the first mold;

[0007] A fixing pin, one end of which is engaged with the first pin hole, the fixing pin comprising a fixing tail post, a cylindrical fixing pin body and a conical head, one side of the fixing tail post is fixedly connected to the cylindrical fixing pin body, and the cylindrical fixing pin body is fixedly connected to the conical head away from the fixing tail post;

[0008] The second mold is arranged on a side of the first mold close to the first clamping plate, a second pin hole groove is provided on a side of the second mold away from the first mold, the second pin hole groove is fixedly connected to an end of a fixing pin away from the second pin hole groove, a plurality of second clamping plates are arranged on a side of the second mold close to the first mold, and the plurality of second clamping plates and the first clamping plates are equidistantly clamped and connected to each other.

[0009] As a preferred technical solution of the present invention, the cross-sectional radius of the first pin hole groove is equal to the cross-sectional radius of the second pin hole groove, the cross-sectional radius of the cylindrical fixing pin body is 1 to 3 mm smaller than the cross-sectional radius of the first pin hole groove, and the cross-sectional radius of the first pin hole groove, the inner side surface of the second pin hole groove, and the outer side surface of the cylindrical fixing pin body are all provided with rough surfaces.

[0010] As a preferred technical solution of the present invention, a groove is provided at one end of the fixed tail column away from the cylindrical fixing pin body, a rotating knob is arranged in the groove, the rotating knob is a butterfly-shaped structure, a synchronous rotating shaft is arranged at the axis of the rotating knob, and a locking thread is arranged on the side of the synchronous rotating shaft.

[0011] As a preferred technical solution of the present invention, a screw-in rod is provided on one side of the rotating knob, an outer side of the screw-in rod is provided with an external thread, and an internal thread groove for use with the external thread is provided inside the cylindrical fixing pin body.

[0012] As a preferred technical solution of the present invention, a connecting rod is provided on the side of the screw-in rod away from the rotating knob, a fixed rotation mechanism is provided on the side of the connecting rod close to the rotating knob, and a clamping block is provided on the side of the screw-in rod close to the connecting rod, and the clamping block is rotatably connected to the fixed rotation mechanism.

[0013] As a preferred technical solution of the present invention, the fixed rotation mechanism includes a slot and a rolling steel ball, the slot is engaged with the block, a number of evenly distributed rolling steel balls are arranged inside the slot, the rolling steel balls are rollingly connected with the block, and a tightening spring is arranged on the side of the cylindrical fixing pin body, and the radius of the tightening spring is 1 to 3 mm larger than that of the cylindrical fixing pin body.

[0014] As a preferred technical solution of the present invention, a propulsion guide block is provided on the side of the connecting rod away from the screw-in rod, a first steering block is provided on both sides of the propulsion guide block, the first steering block is rotatably connected to a steering bar, the steering bar is rotatably connected to a second steering block, a locking rod is provided on one side of the second steering block, a locking ball is provided on the side of the locking rod away from the second steering block, and a limiting groove is provided on the side of the cylindrical fixing pin body close to the conical head.

[0015] As a preferred technical solution of the present invention, a buffer spring is arranged on the side of the locking rod, the locking rod is made of elastic rubber material, and the diameter of the locking ball is equal to the cross-sectional diameter of the limiting groove.

[0016] The beneficial effects of the present invention are as follows: the pin anti-falling structure of the automobile parts mold is threadedly connected to the internal thread groove through the external thread. When the rotating knob is turned, the screw-in rod can be spirally pushed inward. By setting a clamping block, it is convenient to limit the relative distance between the screw-in rod and the connecting rod, so as to avoid the screw-in rod from being screwed into place and causing the fixing pin to fall off. When the cylindrical fixing pin body falls off, the tightening spring and the first pin hole groove and the second pin hole groove generate a certain friction force, thereby causing a reverse blocking force to the falling off of the cylindrical fixing pin body, thereby improving the anti-falling structure. Performance, when the guide block is pushed forward, the second steering block extends to both sides along the limit groove, and then pushes the locking rod and the locking ball to lock, so as to prevent the fixed pin from falling off from the first mold and the second mold. The present invention solves the problem that if the gap between the pin hole and the pin is too large, the pin is likely to fall off, causing the working part to move, and further causing damage to the working part of the mold, so that the mold cannot be produced normally. If, in order to prevent the pin from falling off, the pin and the pin hole are set to a tight fit relationship, the pin is not convenient to be inserted into the pin hole, thereby improving the practicality of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 It is a structural schematic diagram of a pin anti-falling structure of an automobile part mold of the present invention;

[0019] Figure 2 It is a structural schematic diagram of a fixing pin of a pin anti-falling structure of an automobile part mold of the present invention;

[0020] Figure 3 It is a structural schematic diagram of an internal screw-in portion of a pin anti-falling structure of an automobile part mold of the present invention;

[0021] Figure 4 It is a schematic diagram of the overall structure of a pin anti-falling structure of an automobile part mold after installation of the present invention;

[0022] Figure 5 It is a top view of the overall installation of a pin anti-falling structure of an automobile part mold of the present invention;

[0023] Figure 6 It is a cross-sectional view of a fixing pin of a pin anti-falling structure of an automobile part mold of the present invention;

[0024] Figure 7 It is an enlarged view of A of a pin anti-falling structure of an automobile part mold of the present invention;

[0025] Figure 8It is an enlarged view of B of a pin anti-falling structure of an automobile part mold of the present invention;

[0026] Fig. 9 It is an enlarged view of C of a pin anti-falling structure of an automobile part mold of the present invention.

[0027] In the figure: 1. first mold; 2. first pin hole groove; 3. first engaging plate; 4. fixing pin; 5. fixing tail column; 6. cylindrical fixing pin body; 7. conical head; 8. second mold; 9. second pin hole groove; 10. second engaging plate; 11. groove; 12. turning knob; 13. synchronous shaft; 14. locking thread; 15. screw-in rod; 16. external thread; 17. connecting rod; 18. clamping block; 19. clamping groove; 20. buffer spring; 21. rolling steel ball; 22. tightening spring; 23. pushing guide block; 24. first steering block; 25. steering bar; 26. second steering block; 27. clamping rod; 28. clamping ball; 29. ​​limiting groove. DETAILED DESCRIPTION

[0028] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0029] Example: Figure 1-9 As shown, the pin anti-drop structure of an automobile part mold of the present invention comprises:

[0030] A first mold 1, a first pin hole 2 is provided on one side of the first mold 1, and a plurality of evenly distributed first clamping plates 3 are provided on the other side of the first mold 1;

[0031] A fixing pin 4, one end of which is engaged with the first pin hole 2, and the fixing pin 4 comprises a fixing tail column 5, a cylindrical fixing pin body 6 and a conical head 7, one side of the fixing tail column 5 is fixedly connected with the cylindrical fixing pin body 6, and the cylindrical fixing pin body 6 is fixedly connected with the conical head 7 away from the fixing tail column 5;

[0032] The second mold 8 is arranged on the side of the first mold 1 close to the first clamping plate 3, and a second pin hole groove 9 is opened on the side of the second mold 8 away from the first mold 1. The second pin hole groove 9 is fixedly connected to the end of the fixing pin 4 away from the second pin hole groove 9, and a plurality of second clamping plates 10 are arranged on the side of the second mold 8 close to the first mold 1, and the plurality of second clamping plates 10 and the first clamping plate 3 are equidistantly clamped and connected to each other.

[0033] Among them, the cross-sectional radius of the first pin hole groove 2 is equal to the cross-sectional radius of the second pin hole groove 9, the cross-sectional radius of the cylindrical fixing pin body 6 is 1 to 3 mm smaller than the cross-sectional radius of the first pin hole groove 2, and the cross-sectional radius of the first pin hole groove 2, the inner side surface of the second pin hole groove 9 and the outer side surface of the cylindrical fixing pin body 6 are all provided with rough surfaces. By controlling the cross-sectional areas of the first pin hole groove 2, the second pin hole groove 9 and the cylindrical fixing pin body 6, it is convenient for the cylindrical fixing pin body 6 to pass through the first pin hole groove 2 and the second pin hole groove 9, and at the same time, it is avoided that the cross-sectional area difference between the cylindrical fixing pin body 6 and the first pin hole groove 2 and the second pin hole groove 9 is large, which makes it easy for the cylindrical fixing pin body 6 to fall off.

[0034] Among them, a groove 11 is opened at one end of the fixed tail column 5 away from the cylindrical fixing pin body 6, and a rotating knob 12 is arranged in the groove 11. The rotating knob 12 is a butterfly-shaped structure. A synchronous rotating shaft 13 is arranged on the axis of the rotating knob 12, and a locking thread 14 is arranged on the side of the synchronous rotating shaft 13. By arranging the groove 11 on the upper part and arranging the rotating knob 12 in the groove 11, it is convenient to push the screw-in rod 15. By arranging the locking thread 14, when it is difficult to manually rotate the rotating knob 12, a corresponding wrench is used to rotate it, thereby improving the practicability of the device.

[0035] Among them, a screw-in rod 15 is provided on one side of the rotating knob 12, and an external thread 16 is provided on the outer side of the screw-in rod 15. An internal thread groove used in conjunction with the external thread 16 is opened inside the cylindrical fixing pin body 6. By setting the screw-in rod 15, and then the screw-in rod 15 is threadedly connected to the internal thread groove through the external thread 16, when the rotating knob 12 is rotated, the screw-in rod 15 can be spirally advanced inward.

[0036] Among them, a connecting rod 17 is provided on the side of the screw-in rod 15 away from the rotating knob 12, a fixed rotation mechanism is provided on the side of the connecting rod 17 close to the rotating knob 12, and a clamping block 18 is provided on the side of the screw-in rod 15 close to the connecting rod 17. The clamping block 18 is rotatably connected to the fixed rotation mechanism. By setting the fixed rotation mechanism, it is convenient to convert the spiral propulsion of the screw-in rod 15 into linear propulsion. By setting the clamping block 18, it is convenient to limit the relative distance between the screw-in rod 15 and the connecting rod 17, so as to avoid the screw-in rod 15 not being screwed into place, thereby causing the fixing pin 4 to fall off.

[0037] Among them, the fixed rotation mechanism includes a slot 19 and a rolling steel ball 21, the slot 19 is engaged with the block 18, and a number of evenly distributed rolling steel balls 21 are arranged inside the slot 19, and the rolling steel balls 21 are rollingly connected with the block 18. A tightening spring 22 is arranged on the side of the cylindrical fixing pin body 6, and the radius of the tightening spring 22 is 1 to 3 mm larger than the cylindrical fixing pin body 6. By arranging the rolling steel balls 21, the block 18 is rollingly connected with the rolling steel balls 21, so as to realize the conversion of the spiral propulsion of the screw-in rod 15 into linear propulsion. By arranging the tightening spring 22, when the cylindrical fixing pin body 6 falls off, the tightening spring 22 and the first pin hole groove 2 and the second pin hole groove 9 generate a certain friction force, thereby causing a reverse blocking force to the falling off of the cylindrical fixing pin body 6, thereby improving the anti-falling performance of the structure.

[0038] Among them, a pushing guide block 23 is provided on the side of the connecting rod 17 away from the screw-in rod 15, and a first steering block 24 is provided on both sides of the pushing guide block 23. The first steering block 24 is rotatably connected to a steering bar 25, and the steering bar 25 is rotatably connected to a second steering block 26. A locking rod 27 is provided on one side of the second steering block 26, and a locking ball 28 is provided on the side of the locking rod 27 away from the second steering block 26. A limiting groove 29 is provided on the side of the cylindrical fixing pin body 6 close to the conical head 7. By setting the pushing guide block 23, when the pushing guide block 23 is pushed, the second steering block 26 extends to both sides along the limiting groove 29 respectively, and then pushes the locking rod 27 and the locking ball 28 to be locked, so as to prevent the fixing pin 4 from falling off from the first mold 1 and the second mold 8.

[0039] Among them, a buffer spring 20 is arranged on the side of the locking rod 27, and the locking rod 27 is made of elastic rubber material. The diameter of the locking ball 28 is equal to the cross-sectional diameter of the limiting groove 29. By arranging the buffer spring 20 and the locking rod 27 made of elastic rubber material, it is avoided that the locking rod 27 is broken when the first mold 1 and the second mold 8 shake, thereby causing the fixing pin 4 to fall off from the first mold 1 and the second mold 8, and the recovery toughness of the locking rod 27 is improved.

[0040] During operation, after the first engaging plate 3 and the second engaging plate 10 are engaged and connected, the fixing pin 4 is used to pass through the first pin hole groove 2 of the first mold 1 and the second pin hole groove 9 of the second mold 8 for connection. During the penetration process, the rotating knob 12 in the groove 11 of the fixing tail column 5 is rotated, and the rotating knob 12 drives the synchronous rotating shaft 13 and the screw-in rod 15 to rotate, and then the external thread 16 on the outer side of the screw-in rod 15 rotates with the thread groove inside the cylindrical fixing pin body 6, so that the screw-in rod 15 is rotated and advanced, and then the screw-in rod 15 pushes the connecting rod 17 to move in, and at the same time, the rotational advancement of the screw-in rod 15 is converted into the linear advancement of the connecting rod 17 through the fixed rotation mechanism, and then the connecting rod 17 The guide block 23 is pushed forward, and the first steering block 24, the second steering block 26 and the steering bar 25 are connected in rotation to realize the advancement of the locking rod 27 and the locking ball 28 in opposite directions along the limiting groove 29, until the locking ball 28 is engaged and fixed with the cylindrical fixing pin body 6. At the same time, the buffer spring 20 and the locking rod 27 made of elastic rubber material prevent the locking rod 27 from breaking when the first mold 1 and the second mold 8 shake, thereby causing the fixing pin 4 to fall off from the first mold 1 and the second mold 8, thereby improving the recovery toughness of the locking rod 27, thereby completing the function of preventing the pin of the automobile parts mold from falling off, and improving the practicality of the structure.

[0041] Finally, it should be noted that in the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0042] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pin anti-drop structure for an automobile parts mold, characterized in that: include: A first mold (1), wherein a first pin hole groove (2) is provided on one side of the first mold (1), and a plurality of evenly distributed first clamping plates (3) are provided on the other side of the first mold (1); A fixing pin (4), one end of the fixing pin (4) is snap-connected with the first pin hole (2), the fixing pin (4) comprises a fixing tail column (5), a cylindrical fixing pin body (6) and a conical head (7), one side of the fixing tail column (5) is fixedly connected with the cylindrical fixing pin body (6), and the side of the cylindrical fixing pin body (6) away from the fixing tail column (5) is fixedly connected with the conical head (7); one end of the fixing tail column (5) away from the cylindrical fixing pin body (6) is provided with a groove (11), the groove (11) is provided with a rotating knob (12), the rotating knob (12) is a butterfly-shaped structure, the axis of the rotating knob (12) is provided with a synchronous rotating shaft (13), and the side of the synchronous rotating shaft (13) is provided with a locking thread (14); a screw-in rod (15) is provided on one side of the rotating knob (12), the outer side of the screw-in rod (15) is provided with an external thread (16), a clamping block (18) is provided on the side of the screw-in rod (15) close to the connecting rod (17), and the screw-in rod (15) is away from the rotating knob. A connecting rod (17) is provided on one side of the rotating knob (12); a fixed rotation mechanism is provided on the side of the connecting rod (17) close to the rotating knob (12); the fixed rotation mechanism comprises a clamping groove (19) and a rolling steel ball (21); the clamping groove (19) is clamped and connected with the clamping block (18); a plurality of evenly distributed rolling steel balls (21) are provided inside the clamping groove (19); the rolling steel balls (21) are rollingly connected with the clamping block (18); a pushing mechanism is provided on the side of the connecting rod (17) away from the screw-in rod (15); A guide block (23), wherein a first steering block (24) is disposed on both sides of the propulsion guide block (23), the first steering block (24) is rotatably connected to a steering bar (25), the steering bar (25) is rotatably connected to a second steering block (26), a locking rod (27) is disposed on one side of the second steering block (26), a locking ball (28) is disposed on the side of the locking rod (27) away from the second steering block (26), and a limiting groove (29) is disposed on the side of the cylindrical fixing pin body (6) close to the conical head (7); In addition, an internal thread groove for use with the external thread (16) is provided inside the cylindrical fixing pin body (6), a tightening spring (22) is provided on the side of the cylindrical fixing pin body (6), and the radius of the tightening spring (22) is 1 to 3 mm larger than that of the cylindrical fixing pin body (6); a buffer spring (20) is provided on the side of the locking rod (27), the locking rod (27) is made of elastic rubber material, and the diameter of the locking ball (28) is equal to the cross-sectional diameter of the limiting groove (29); A second mold (8), the second mold (8) is arranged on a side of the first mold (1) close to the first clamping plate (3), a second pin hole groove (9) is provided on a side of the second mold (8) away from the first mold (1), the second pin hole groove (9) is fixedly connected to an end of the fixing pin (4) away from the second pin hole groove (9), a plurality of second clamping plates (10) are arranged on a side of the second mold (8) close to the first mold (1), and the plurality of second clamping plates (10) and the first clamping plate (3) are clamped and connected to each other at equal distances; In addition, the cross-sectional radius of the first pin hole (2) is equal to the cross-sectional radius of the second pin hole (9), the cross-sectional radius of the cylindrical fixing pin body (6) is 1 to 3 mm smaller than the cross-sectional radius of the first pin hole (2), and the cross-sectional radius of the first pin hole (2), the inner side surface of the second pin hole (9) and the outer side surface of the cylindrical fixing pin body (6) are all provided with rough surfaces to avoid the cylindrical fixing pin body (6) from falling off easily due to the large difference in cross-sectional area between the cylindrical fixing pin body (6) and the first pin hole (2) and the second pin hole (9).

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