Cold heading die of piston sleeve

Abstract

The utility model discloses a cold heading die of a piston sleeve, and relates to the technical field of cold heading dies. The cold heading die of the piston sleeve comprises a lower die assembly, a fixing assembly is connected to the lower surface of the lower die assembly, a pressed assembly is connected to the middle of the upper surface of the fixing assembly, a pushing assembly is arranged on the lower surface of the pressed assembly, penetrating grooves are formed in the two sides of the upper surface of the lower die assembly, and stamping assemblies are arranged in the penetrating grooves. Through the arrangement of the pushing assembly, the annular plate is rotated to enable the protruding position on the periphery of the mounting plate to be located on the other side of the groove, the extruding and pushing plate is pushed to enable the annular plate to move upwards through the connecting rod, and therefore the formed piston sleeve is ejected out of the punch, manual disassembly is not needed, the labor intensity is reduced, the production efficiency is prevented from being affected, and the production efficiency is improved. And through the arranged pressed assembly, when the upper die conducts stamping downwards, a second spring and a damping rod absorb and release vibration.

Description

Technical Field

[0001] The utility model relates to the technical field of cold heading dies, in particular to a cold heading die for a piston sleeve. Background Art

[0002] Piston sleeves are common components in the machinery and automotive industries. They are mainly used between the piston and the cylinder body to support, seal, guide and improve the efficiency of piston movement. Cold heading dies are tools specially used in the cold heading forming process. They manufacture metal parts such as screws and pins by applying pressure at room temperature. Their characteristics include high precision and high efficiency, and they are suitable for mass production. At the same time, wear-resistant materials are used to increase their service life. Cold heading dies are complex in design and involve multiple industries such as automobiles, electronics, and construction. They are usually used to produce various fasteners and other metal parts with complex shapes.

[0003] The cold heading die of the piston sleeve uses a punch for forming during the production process. However, the punch is easily stuck inside the sleeve after stamping, forcing workers to manually remove it, which not only increases labor intensity, but also affects production efficiency and reduces the efficiency of the overall production line.

[0004] Therefore, the utility model provides a cold heading die for a piston sleeve to solve the above problems. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a cold heading die for a piston sleeve, which solves the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a cold heading die for a piston sleeve, comprising a lower die assembly, a fixing assembly connected to the lower surface of the lower die assembly, a pressure assembly connected to the middle of the upper surface of the fixing assembly, a push assembly provided on the lower surface of the pressure assembly, through grooves formed on both sides of the upper surface of the lower die assembly, and a punching assembly provided inside the through grooves;

[0007] The pushing assembly includes an annular plate, the upper surface of which is provided with a groove, the interior of the groove is arranged on the lower surface of the pressure assembly, the lower surface of the annular plate is connected to a connecting rod, the outer surface of the connecting rod is sleeved with a connecting plate, the upper surface of the connecting plate is located on the periphery of the connecting rod and is connected to a first spring, and the bottom end of the connecting rod is connected to a pushing plate.

[0008] A further improvement of the technical solution of the present utility model is that the lower mold assembly includes a shell, the lower surface of the shell is connected to the edge of the upper surface of the fixed assembly, the inner side of the shell is connected to the inner mold, and the outer surface of the shell is connected to the lower clamping plate.

[0009] The further improvement in the utility model technical scheme lies in that the fixed assembly comprises a bottom plate, the edge of the upper surface of the bottom plate is connected to the lower surface of the shell, the upper surface of the bottom plate is connected with a limiting rod on the two sides of the pressure receiving assembly, and the top of the limiting rod is connected with a first limiting head.

[0010] The further improvement in the utility model technical scheme lies in that the pressure receiving assembly comprises a damping rod, the bottom end of the damping rod is connected to the middle part of the upper surface of the bottom plate, the top end of the damping rod is connected with a mounting plate, the lower surface of the mounting plate is connected with a second spring at the periphery of the damping rod, and the upper surface of the mounting plate is connected with a punch.

[0011] The further improvement in the utility model technical scheme lies in that the stamping assembly comprises a guide rod, the outer surface of the guide rod is arranged in the inside of the through groove, the bottom end of the guide rod is connected with a second limiting head, the top end of the guide rod is connected with an upper cover plate, and the inner side of the upper cover plate is connected with an upper die.

[0012] The further improvement in the utility model technical scheme lies in that the upper surface of the bottom plate is provided with an arc-shaped groove matched with the connecting rod at the periphery of the limiting rod, and the position of the arc-shaped groove corresponds to the position of the recess.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] 1. The top pushing assembly is arranged, the convex part at the periphery of the mounting plate is located at the other side of the recess by rotating the annular plate, the annular plate is moved upward by the connecting rod and the extrusion plate, the formed piston sleeve is pushed out of the punch, manual disassembly is not needed, labor intensity is reduced, production efficiency is not affected, and the efficiency of the overall production line is reduced.

[0015] 2. The pressure receiving assembly is arranged, the second spring and the damping rod absorb and release vibration when the upper die is downwardly stamped, and the impact degree is avoided from being too large to affect the quality of the sleeve. DRAWINGS

[0016] Figure 1 It is a structure schematic view of the cold heading die of the piston sleeve;

[0017] Figure 2 It is a sectional structure schematic view of the shell in the cold heading die of the piston sleeve;

[0018] Figure 3 It is a structure schematic view of the annular plate in the cold heading die of the piston sleeve;

[0019] Figure 4 It is a structure schematic view of the second spring in the cold heading die of the piston sleeve;

[0020] Figure 5Structure diagram of the middle shell of the cold heading die for the piston sleeve.

[0021] In the figure: 1, annular plate; 2, connecting rod; 3, connecting plate; 4, first spring; 5, extrusion plate; 6, shell; 7, inner die; 8, lower closing plate; 9, bottom plate; 10, limiting rod; 11, first limiting head; 12, damping rod; 13, mounting plate; 14, second spring; 15, punch; 16, guide rod; 17, second limiting head; 18, upper closing plate; 19, upper die. DETAILED DESCRIPTION

[0022] Various exemplary embodiments, features, and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numbers in the drawings represent elements having the same function or similar functions. Although various aspects of the embodiments are illustrated in the drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

[0023] The word "exemplary" is used herein to mean "serving as an example, instance, or illustration." Any implementation described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other implementations.

[0024] In addition, for the purpose of better illustrating the present application, numerous specific details are given in the following specific embodiments. Those skilled in the art should understand that the present application can also be implemented without some specific details. In some examples, methods, means, elements well known to those skilled in the art are not described in detail, in order to highlight the main idea of the present application.

[0025] Reference Figure 1-Figure 5 The utility model provides 3 technical schemes:

[0026] Embodiment one:

[0027] A cold heading die for a piston sleeve, comprising a lower die assembly, a fixing assembly is connected to the lower surface of the lower die assembly, a pressure receiving assembly is connected to the upper surface of the fixing assembly, a pushing assembly is arranged on the lower surface of the pressure receiving assembly, a through groove is formed on both sides of the upper surface of the lower die assembly, and a stamping assembly is arranged in the through groove.

[0028] The pushing assembly includes an annular plate 1, the upper surface of which is provided with a groove, the interior of the groove is arranged on the lower surface of the pressure assembly, the lower surface of the annular plate 1 is connected to a connecting rod 2, the outer surface of the connecting rod 2 is sleeved with a connecting plate 3, the upper surface of the connecting plate 3 is located on the periphery of the connecting rod 2 and is connected to a first spring 4, and the bottom end of the connecting rod 2 is connected to a pushing plate 5. The annular plate 1 is rotated so that the protrusion of the outer periphery of the mounting plate 13 is located on the other side of the groove, and the pushing plate 5 is pushed through the connecting rod 2 to move the annular plate 1 upward, thereby pushing the formed piston sleeve out of the punch 15, without manual disassembly, reducing labor intensity, and avoiding affecting production efficiency, resulting in reduced efficiency of the overall production line. At the same time, the connecting plate 3 is connected to the bottom plate 9, and under the pulling action of the first spring 4, the annular plate 1 is restored to its original position, which is convenient for next use.

[0029] Example 2:

[0030] Based on Example 1:

[0031] The lower mold assembly includes a shell 6, the lower surface of the shell 6 is connected to the edge of the upper surface of the fixed assembly, the inner side of the shell 6 is connected to the inner mold 7, and the outer surface of the shell 6 is connected to the lower closing plate 8. The lower closing plate 8 is convenient for receiving the upper closing plate 18, so that the shell 6 and the upper mold 19 can be closed. The inner mold 7 improves the accuracy of the periphery of the piston sleeve.

[0032] The fixing assembly includes a base plate 9, the edge of the upper surface of the base plate 9 is connected to the lower surface of the shell 6, and the upper surface of the base plate 9 is located on both sides of the pressure assembly and is connected to a limiting rod 10. The top of the limiting rod 10 is connected to a first limiting head 11. The limiting rod 10 guides the movement of the mounting plate 13, and the first limiting head 11 limits the position of the mounting plate 13 to avoid the elastic force of the second spring 14 and the first spring 4 being misaligned, resulting in misalignment of the protrusion and the groove on the periphery of the mounting plate 13.

[0033] The pressure component includes a damping rod 12, the bottom end of the damping rod 12 is connected to the middle of the upper surface of the base plate 9, the top of the damping rod 12 is connected to a mounting plate 13, the lower surface of the mounting plate 13 is located at the periphery of the damping rod 12 and is connected to a second spring 14, and the upper surface of the mounting plate 13 is connected to a punch 15. When the upper die 19 punches downward, the second spring 14 and the damping rod 12 absorb and release the vibration to avoid excessive impact force affecting the quality of the sleeve.

[0034] The stamping assembly includes a guide rod 16, the outer surface of which is arranged inside the through groove, the bottom end of the guide rod 16 is connected to a second limit head 17, the top of the guide rod 16 is connected to an upper closing plate 18, and the inner side of the upper closing plate 18 is connected to an upper die 19. The guide rod 16 guides the upper closing plate 18 so that it can overlap with the lower closing plate 8. The second limit head 17 prevents the guide rod 16 from being separated from the lower closing plate 8, causing the two to need to be repositioned, affecting the stamping efficiency. A protrusion is provided in the middle of the lower surface of the upper die 19, which is adapted to the position of the punch 15 to facilitate stamping of the material.

[0035] An arcuate groove adapted to the connecting rod 2 is provided on the outer periphery of the limiting rod 10 on the upper surface of the bottom plate 9 . The position of the arcuate groove corresponds to the position of the groove. The arrangement of the arcuate groove and the groove facilitates the rotation of the annular plate 1 .

[0036] Example 3:

[0037] Based on Example 1 and Example 2:

[0038] First, the lower closing plate 8 is convenient for receiving the upper closing plate 18, and the guide rod 16 guides the upper closing plate 18 so that it can overlap with the lower closing plate 8. The second limit head 17 prevents the guide rod 16 from separating from the lower closing plate 8, thereby enabling the shell 6 and the upper mold 19 to be molded together. Then, when the upper mold 19 is stamped downward, the second spring 14 and the damping rod 12 absorb and release the vibration. Secondly, the limit rod 10 guides the movement of the mounting plate 13, and the first limit head 11 limits the position of the mounting plate 13 to avoid the elastic force misalignment of the second spring 14 and the first spring 4. Finally, the annular plate 1 is rotated so that the protrusion on the outer periphery of the mounting plate 13 is located on the other side of the groove, and the extrusion plate 5 is pushed to move the annular plate 1 upward through the connecting rod 2, thereby pushing the formed piston sleeve out of the punch 15. At the same time, the connecting plate 3 is connected to the bottom plate 9, and under the pulling action of the first spring 4, the annular plate 1 is restored to its original position.

[0039] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cold heading die for a piston sleeve, comprising a lower die assembly, characterized in that: The lower surface of the lower die assembly is connected to a fixed assembly, the middle part of the upper surface of the fixed assembly is connected to a pressure assembly, the lower surface of the pressure assembly is provided with a push assembly, both sides of the upper surface of the lower die assembly are provided with through grooves, and the inside of the through grooves is provided with a punching assembly; The pushing assembly comprises an annular plate (1), the upper surface of the annular plate (1) is provided with a groove, the interior of the groove is arranged on the lower surface of the pressure assembly, the lower surface of the annular plate (1) is connected to a connecting rod (2), the outer surface of the connecting rod (2) is sleeved with a connecting plate (3), the upper surface of the connecting plate (3) is located on the periphery of the connecting rod (2) and is connected to a first spring (4), and the bottom end of the connecting rod (2) is connected to a pushing plate (5).

2. The cold heading die for a piston sleeve according to claim 1, characterized in that: The lower mold assembly comprises a shell (6), the lower surface of the shell (6) is connected to the edge of the upper surface of the fixed assembly, the inner side of the shell (6) is connected to the inner mold (7), and the outer surface of the shell (6) is connected to the lower clamping plate (8).

3. The cold heading die for a piston sleeve according to claim 1, characterized in that: The fixing assembly comprises a base plate (9), the edge of the upper surface of the base plate (9) is connected to the lower surface of the shell (6), the upper surface of the base plate (9) is located on both sides of the pressure component and is connected to a limiting rod (10), and the top end of the limiting rod (10) is connected to a first limiting head (11).

4. The cold heading die for a piston sleeve according to claim 1, characterized in that: The pressure component includes a damping rod (12), the bottom end of the damping rod (12) is connected to the middle of the upper surface of the base plate (9), the top end of the damping rod (12) is connected to a mounting plate (13), the lower surface of the mounting plate (13) is located outside the damping rod (12) and is connected to a second spring (14), and the upper surface of the mounting plate (13) is connected to a punch (15).

5. The cold heading die for a piston sleeve according to claim 1, characterized in that: The stamping assembly includes a guide rod (16), the outer surface of the guide rod (16) is arranged inside the through groove, the bottom end of the guide rod (16) is connected to a second limit head (17), the top end of the guide rod (16) is connected to an upper closing plate (18), and the inner side of the upper closing plate (18) is connected to an upper mold (19).

6. The cold heading die for a piston sleeve according to claim 3, characterized in that: An arc-shaped groove adapted to the connecting rod (2) is provided on the upper surface of the bottom plate (9) at the periphery of the limiting rod (10), and the position of the arc-shaped groove corresponds to the position of the groove.

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