Forge piece guide pin

Abstract

The utility model discloses a forge piece guide pin and relates to the field of forge piece guide pins, the forge piece guide pin comprises a tail forge piece and a head forge piece, inserting holes are formed in the circumference of the inner wall of the tail forge piece at equal intervals, and connecting holes are formed in the circumference of the inner wall of the head forge piece at equal intervals in a penetrating mode; after the head forge piece and the tail forge piece are assembled and the positioning pin rod is inserted into the inner diameter of the head forge piece, the conical section at the bottom can extrude the plurality of groups of spherical blocks, so that the penetrating inserting rod can penetrate through the connecting hole and extend into the inserting hole in the inner diameter of the tail forge piece; after the second fastening thread of the upper section of the positioning pin rod is fastened with the second matching thread of the head forging, the positioning pin rod and the head forging form fastening connection, so that the lower section part of the head forging and the tail forging can form dense stress points through a plurality of groups of penetrating insertion rods; therefore, connection stress points of the tail forge piece and the head forge piece are increased, stress points except upper thread fastening points are increased, and connection is more stable.

Description

Technical Field

[0001] This application relates to the field of forged guide pins, and in particular to forged guide pins. Background Technology

[0002] A guide pin is a precision part used in molds, usually made of high-hardness materials such as high-speed steel, tungsten steel, or cemented carbide. It is mainly used to accurately position workpieces on progressive dies. A guide pin is a pin-shaped metal part that extends into the hole of a workpiece to guide its position in the die cavity. Its main function is to ensure the positional accuracy of the workpiece during the processing and to ensure the accuracy of the positional dimensions of the workpiece's shape and inner hole.

[0003] However, when existing forged guide pins are used, the head forging is connected to the tail forging through the neck thread to form the guide pin workpiece. The head forging and the tail forging are only connected by a section of thread on the neck. There are few points of force connection. Under long-term force guidance, the threads are prone to slippage, which greatly reduces the service life. Utility Model Content

[0004] To address the issue of insufficient connection points and poor stability between the head and tail forgings in guide pin components, this application provides forged guide pins.

[0005] The forged guide pin provided in this application adopts the following technical solution: it includes a tail forging and a head forging. The tail forging has insertion holes at equal intervals on the inner circumference of its inner wall. The head forging has connecting holes at equal intervals on the inner circumference of its inner wall. A positioning pin is detachably installed in the inner diameter of the head forging. Fasteners are fixedly installed at equal intervals on the inner circumference of the head forging. The fasteners include through-holes that are movably installed on the inner circumference of the head forging. A spherical block is integrally formed at one end of the through-hole near the positioning pin. A return spring is fixedly installed between the spherical block and the inner wall of the head forging.

[0006] By adopting the above technical solution, the first fastening thread on the head forging is connected to the first matching thread on the tail forging, so that the head forging and the tail forging can form a forging guide pin.

[0007] Preferably, the top of the head forging is integrally formed with a head baffle, the inner diameter of the head baffle is provided with a second matching thread, and the outer periphery of the head forging is provided with a first fastening thread near the top.

[0008] By adopting the above technical solution, after the head forging and the tail forging are assembled, the bottom conical section can compress multiple sets of spherical blocks after the positioning pin is inserted into the inner diameter of the head forging.

[0009] Preferably, a first matching thread is arranged on the inner wall of the tail forging near the top, and the first matching thread is connected with the first fastening thread.

[0010] Through the above technical scheme, the positioning pin rod is fastened with the head forging through the second fastening thread of the upper segment of the positioning pin rod and the second matching thread of the head forging.

[0011] Preferably, a second fastening thread is arranged on the outer wall of the positioning pin rod near the top, and the second fastening thread is connected with the second matching thread.

[0012] Through the above technical scheme, the positioning pin rod is fastened with the head forging through the second fastening thread of the upper segment of the positioning pin rod and the second matching thread of the head forging.

[0013] Preferably, the bottom of the positioning pin rod is a conical structure, and the outer part of the positioning pin rod is in contact with a plurality of spherical blocks.

[0014] Through the above technical scheme, the bottom conical segment can extrude a plurality of spherical blocks after the positioning pin rod is inserted into the inner diameter of the head forging.

[0015] Preferably, the through plug rod is located in the inner wall of the corresponding link hole, and the spherical block is located in the inner diameter of the head forging.

[0016] Through the above technical scheme, the positioning pin rod is fastened with the head forging through the second fastening thread of the upper segment of the positioning pin rod and the second matching thread of the head forging.

[0017] Preferably, the link hole and the plug hole are one-to-one corresponding, and the through plug rod is in clearance fit with the inner walls of the link hole and the plug hole.

[0018] Through the above technical scheme, the positioning pin rod is fastened with the head forging, so that the lower segment of the head forging can form dense stress points with the tail forging through a plurality of through plug rods.

[0019] In summary, the present application has at least one of the following beneficial technical effects:

[0020] The bottom conical section can extrude multiple groups of spherical blocks, so that the penetrating plug rod can penetrate the connecting hole, extend into the plug-in hole on the inner diameter of the tail forging, and when the second fastening thread of the upper segment of the positioning pin rod is fastened with the second matched thread of the head forging, the positioning pin rod and the head forging are fastened and connected, so that the lower segment of the head forging can form a dense stress point with the tail forging through multiple penetrating plug rods, so that the stress points of the tail forging and the head forging are increased, the stress points other than the upper thread fastening point are increased, and the connection is more stable. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a three-dimensional structure schematic diagram of the utility model;

[0022] Figure 2 It is a side cross-sectional structure schematic diagram of the utility model;

[0023] Figure 3 It is a tail forging internal structure schematic diagram in the utility model;

[0024] Figure 4 It is Figure 3 A local enlarged structure schematic diagram in the utility model.

[0025] In the drawing: 1, tail forging; 2, head forging; 3, positioning pin rod; 4, fastener; 11, first matched thread; 12, plug-in hole; 20, head baffle; 21, second matched thread; 22, first fastening thread; 23, connecting hole; 31, second fastening thread; 41, penetrating plug rod; 42, spherical block; 43, return spring. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings Figures 1-4 The application is further described in detail.

[0027] Reference Figures 1-3 The forging guide pin disclosed by the embodiment of the application comprises a tail forging 1 and a head forging 2, the tail forging 1 is provided with plug-in holes 12 at equal intervals on the circumference of the inner wall, the head forging 2 is provided with connecting holes 23 at equal intervals and penetratingly on the circumference of the inner wall, and the head forging 2 is detachably provided with a positioning pin rod 3 in the inner diameter.

[0028] The head forging 2 is provided with fasteners 4 at equal intervals and fixedly on the circumference of the inner wall, the fastener 4 comprises a penetrating plug rod 41 movably installed on the circumference of the inner wall of the head forging 2, the penetrating plug rod 41 is integrally provided with a spherical block 42 close to one end of the positioning pin rod 3, and the spherical block 42 is fixedly provided with a return spring 43 between the inner wall of the head forging 2.

[0029] The first fastening thread 22 on the head forging 2 is connected with the first matched thread 11 on the tail forging 1, so that the head forging 2 and the tail forging 1 can form the forging guide pin;

[0030] After the head forging 2 and the tail forging 1 are assembled, the bottom conical section can extrude the plurality of spherical blocks 42 after the positioning pin rod 3 is inserted into the inner diameter of the head forging 2, so that the penetrating plug rod 41 can penetrate from the connecting hole 23 and extend into the plug-in hole 12 on the inner diameter of the tail forging 1, and when the second fastening thread 31 on the upper section of the positioning pin rod 3 is threadedly fastened with the second matched thread 21 of the head forging 2, the positioning pin rod 3 and the head forging 2 are fastened and connected, so that the lower section of the head forging 2 can form a dense stress point with the tail forging 1 through the plurality of penetrating plug rods 41, so that the stress points of the tail forging 1 and the head forging 2 are increased, the stress points other than the upper thread fastening point are increased, and the connection is more stable.

[0031] Reference Figure 2 The head forging 2 is integrally formed with a head baffle 20 at the top, the second matched thread 21 is arranged in the inner diameter of the head baffle 20, the first fastening thread 22 is arranged on the outer periphery of the head forging 2 close to the top, the first matched thread 11 is arranged on the inner wall of the tail forging 1 close to the top, the first matched thread 11 is matched and connected with the first fastening thread 22, and the first fastening thread 22 on the head forging 2 is connected with the first matched thread 11 on the tail forging 1, so that the head forging 2 and the tail forging 1 can form the forging guide pin.

[0032] Reference Figures 2-4 The second fastening thread 31 is arranged on the outer periphery of the positioning pin rod 3 close to the top, the second fastening thread 31 is matched and connected with the second matched thread 21, the bottom conical section can extrude the plurality of spherical blocks 42 after the positioning pin rod 3 is inserted into the inner diameter of the head forging 2, so that the penetrating plug rod 41 can penetrate from the connecting hole 23 and extend into the plug-in hole 12 on the inner diameter of the tail forging 1, and when the second fastening thread 31 on the upper section of the positioning pin rod 3 is threadedly fastened with the second matched thread 21 of the head forging 2, the positioning pin rod 3 and the head forging 2 are fastened and connected.

[0033] Reference Figure 3 The bottom of the positioning pin rod 3 is a conical structure, the outer part of the positioning pin rod 3 abuts against the plurality of spherical blocks 42, the penetrating plug rod 41 is located in the inner wall of the corresponding connecting hole 23, the spherical block 42 is located in the inner diameter of the head forging 2, and after the head forging 2 and the tail forging 1 are assembled, the bottom conical section can extrude the plurality of spherical blocks 42 after the positioning pin rod 3 is inserted into the inner diameter of the head forging 2, so that the penetrating plug rod 41 can penetrate from the connecting hole 23 and extend into the plug-in hole 12 on the inner diameter of the tail forging 1.

[0034] Reference Figures 3-4 Wherein, the adapter hole 23 corresponds to the plug hole 12 one by one, the through plug rod 41 is matched with the gap between the adapter hole 23 and the inner wall of the plug hole 12, and after the second fastening thread 31 on the upper segment of the positioning pin rod 3 is fastened with the second matched thread 21 of the head forging 2, the positioning pin rod 3 and the head forging 2 form a fastening connection, so that the lower segment of the head forging 2 can form a dense stress point with the tail forging 1 through multiple groups of through plug rods 41.

[0035] The implementation principle of the forging guide pin of the embodiment of the application is as follows: in use, first, the first fastening thread 22 on the head forging 2 is connected with the first matched thread 11 on the tail forging 1, so that the head forging 2 and the tail forging 1 can form a forging guide pin;

[0036] Then, after the head forging 2 and the tail forging 1 are assembled, the positioning pin rod 3 is inserted into the inner diameter of the head forging 2, the bottom conical segment can extrude multiple groups of spherical blocks 42, so that the through plug rod 41 can penetrate the adapter hole 23 and extend into the plug hole 12 on the inner diameter of the tail forging 1;

[0037] Finally, after the second fastening thread 31 on the upper segment of the positioning pin rod 3 is fastened with the second matched thread 21 of the head forging 2, the positioning pin rod 3 and the head forging 2 form a fastening connection, so that the lower segment of the head forging 2 can form a dense stress point with the tail forging 1 through multiple groups of through plug rods 41, so that the connection stress points of the tail forging 1 and the head forging 2 are increased, the stress points other than the upper thread fastening points are increased, and the connection is more stable.

[0038] The above are preferred embodiments of the application, and do not limit the protection scope of the application, so: equivalent changes made according to the structure, shape, principle of the application should be covered within the protection scope of the application.

Claims

1. A forging guide pin comprising a tail forging (1), a head forging (2), characterized in that: The tail forging (1) is provided with plug-in holes (12) on the inner wall circumference at equal intervals, the head forging (2) is provided with through connection holes (23) on the inner wall circumference at equal intervals, the head forging (2) is provided with a positioning pin rod (3) which is detachably installed in the inner diameter, the head forging (2) is provided with fasteners (4) which are fixedly installed on the inner wall circumference at equal intervals, the fastener (4) comprises a through plug rod (41) movably installed on the inner wall circumference of the head forging (2), the through plug rod (41) is integrally formed with a spherical block (42) at one end close to the positioning pin rod (3), and the spherical block (42) and the inner wall of the head forging (2) are fixedly installed with a return spring (43).

2. The forging guide pin of claim 1, wherein: The head forging (2) is integrally formed with a head baffle (20) at the top, the head baffle (20) is provided with a second matched thread (21) in the inner diameter, and the head forging (2) is provided with a first fastening thread (22) near the top at the periphery.

3. The forging guide pin of claim 2, wherein: The tail forging (1) is provided with a first matched thread (11) near the top at the inner wall, and the first matched thread (11) is connected in cooperation with the first fastening thread (22).

4. The forging guide pin of claim 3, wherein: The positioning pin rod (3) is provided with a second fastening thread (31) near the top at the periphery, and the second fastening thread (31) is connected in cooperation with the second matched thread (21).

5. The forging guide pin of claim 4, wherein: The bottom of the positioning pin rod (3) is a conical structure, and the outer part of the positioning pin rod (3) abuts against a plurality of spherical blocks (42).

6. The forging guide pin of claim 5, wherein: The through plug rod (41) is located in the inner wall of the corresponding connection hole (23), and the spherical block (42) is located in the inner diameter of the head forging (2).

7. The forging guide pin of claim 6, wherein: The connection hole (23) corresponds to the plug-in hole (12) one by one, and the through plug rod (41) is in clearance fit with the inner walls of the connection hole (23) and the plug-in hole (12).

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