Cold heading forming die for idler shaft sleeve blank

Abstract

The utility model relates to the field of metal cold machining, and discloses a cold heading forming die of an idler shaft sleeve blank, which comprises a lower die, a lower press fit block is arranged at the top of the lower die, an upper die is arranged at the top of the lower press fit block, an upper press fit block is arranged at the bottom of the upper die, and fixing plates are fixedly connected to the outer walls of the lower die and the upper die. And connecting blocks are fixedly connected to one sides of the fixing plates, rotating columns are rotatably connected to the interiors of the connecting blocks, connecting plates are fixedly connected to the outer walls of the rotating columns, buckling columns are fixedly connected to one sides of the connecting plates, and buckling holes are formed in the lower pressing block and the upper pressing block. According to the utility model, through the cooperation of the fixing plate, the buckling column, the buckling hole, the screw and other parts, the whole equipment does not need to be detached and replaced when the equipment is detached and replaced, and the corresponding detaching and replacing speed can be accelerated, so that the detaching and replacing maintenance cost is reduced, and the corresponding detaching and replacing working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of metal cold processing, in particular to a cold heading forming die for an idler shaft sleeve blank. Background Art

[0002] Idler sleeves are commonly used in mechanical transmission systems as components that support and guide transmission belts or chains. Typically made of cylindrical metal, these sleeves feature grooves or raised surfaces to facilitate their use with transmission belts or chains. To create the desired threaded or other specific raised or recessed structures, a cold heading die is required. Cold heading of idler sleeves using these dies can repair surface damage, increase surface hardness and wear resistance, and improve surface roughness, thereby enhancing the performance and service life of the sleeves.

[0003] After long-term use, the cold heading forming mold will produce a certain amount of wear. Therefore, the mold needs to be inspected and replaced after a period of time to prevent the worn mold from causing deviations in the accuracy of the idler shaft sleeve after forming. However, the existing cold heading forming mold needs to be disassembled as a whole when replaced, and it is disassembled by bolts. The disassembly process is relatively complicated, which will slow down the work efficiency of the corresponding staff. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a cold heading forming die for an idler shaft sleeve blank, aiming to improve the problem that the cold heading forming die needs to be disassembled and the disassembly process is cumbersome when it is replaced or repaired.

[0005] The top of the lower mold is provided with a lower pressing block, the top of the lower pressing block is provided with an upper mold, and the bottom of the upper mold is provided with an upper pressing block. The lower mold and the outer wall of the upper mold are fixedly connected to the fixing plate, one side of the fixing plate is fixedly connected to the connecting block, the interior of the connecting block is rotatably connected to a rotating column, the outer wall of the rotating column is fixedly connected to the connecting plate, and one side of the connecting plate is fixedly connected to a snap column. The lower pressing block and the upper pressing block are both provided with snap holes, the snap columns are slidably connected to the inside of the snap holes, the interior of the connecting plate is provided with grooves, the fixing plate is internally threaded with screws, and limiting plates are provided on both sides of the connecting plate, the limiting plates are fixedly connected to one side of the fixing plate, the screws pass through the grooves and extend to the outside, and a docking assembly is provided on one side of the lower mold and the upper mold.

[0006] As a further description of the above technical solution:

[0007] The docking assembly includes a docking frame and a docking groove. The docking frames are fixedly connected to one side of the lower mold and the upper mold. The docking grooves are opened inside the lower pressing block and the upper pressing block. The docking frames are slidably connected inside the docking grooves.

[0008] As a further description of the above technical solution:

[0009] An inserting column is fixedly connected to the lower surface of the upper pressing block, and an inserting hole is opened inside the lower pressing block.

[0010] As a further description of the above technical solution:

[0011] The inserting column is slidably connected to the inside of the inserting hole.

[0012] As a further description of the above technical solution:

[0013] The lower pressing block and the upper pressing block are both fixedly connected with connecting columns, and the outer walls of the connecting columns are sleeved with springs.

[0014] As a further description of the above technical solution:

[0015] One end of the spring is fixedly connected to the inside of the lower pressing block and the upper pressing block, the other end of the spring is fixedly connected to the push plate, and a limiting groove is provided inside the connecting column.

[0016] As a further description of the above technical solution:

[0017] One side of the push plate is fixedly connected to a limiting column, and the outer wall of the limiting column is fixedly connected to a limiting block.

[0018] As a further description of the above technical solution:

[0019] The limiting posts are slidably connected to the interior of the connecting posts, and the limiting blocks are slidably connected to the interior of the limiting grooves.

[0020] The utility model has the following beneficial effects:

[0021] 1. In the present invention, firstly, through the coordination between the fixing plate, the snap column, the snap hole and the screws, the equipment does not need to be disassembled and replaced as a whole, and the corresponding disassembly and replacement speed can be accelerated, thereby reducing the disassembly and replacement maintenance costs and accelerating the corresponding disassembly and replacement work efficiency.

[0022] 2. In the present invention, through the cooperation between the spring, push plate, limit column and limit block, the corresponding equipment can automatically demould the engaged idler shaft sleeve roughening after the cold heading operation is completed, thereby making the demoulding operation of the equipment faster and improving the convenience of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A three-dimensional diagram of the cold heading die for the idler shaft sleeve blank proposed in the present invention;

[0024] Figure 2 This is a schematic diagram of the split lower die of the cold heading die for the idler shaft sleeve blank proposed in the present invention;

[0025] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0026] Figure 4 This is a cross-sectional view of the upper die of the cold heading die for the idler shaft sleeve blank proposed in the present invention;

[0027] Figure 5 This is a diagram showing the internal structure distribution of the connecting column of the cold heading forming die for the idler shaft sleeve blank proposed in the present invention.

[0028] Legend:

[0029] 1. Lower mold; 2. Lower pressing block; 3. Upper mold; 4. Upper pressing block; 5. Fixed plate; 6. Connecting block; 7. Rotating column; 8. Connecting plate; 9. Snap column; 10. Snap hole; 11. Groove; 12. Screw; 13. Limit plate; 14. Docking frame; 15. Docking groove; 16. Inserting column; 17. Inserting hole; 18. Connecting column; 19. Spring; 20. Push plate; 21. Limiting column; 22. Limiting block; 23. Limiting groove. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] Reference Figure 1 、 Figure 2 and Figure 3The utility model provides an embodiment: a cold heading forming mold for an idler shaft sleeve blank, comprising a lower mold 1, a lower pressing block 2 is provided on the top of the lower mold 1, an upper mold 3 is provided on the top of the lower pressing block 2, an upper pressing block 4 is provided on the bottom of the upper mold 3, the outer walls of the lower mold 1 and the upper mold 3 are fixedly connected with a fixing plate 5, one side of the fixing plate 5 is fixedly connected with a connecting block 6, the interior of the connecting block 6 is rotatably connected with a rotating column 7, the outer wall of the rotating column 7 is fixedly connected with a connecting plate 8, one side of the connecting plate 8 is fixedly connected with a snap column 9, the lower pressing block 2 and the upper pressing block 4 are provided with a snap hole 10, the snap column 9 The connection is slidably connected to the inside of the buckle hole 10, and a groove 11 is provided inside the connecting plate 8. The fixing plate 5 is threadedly connected with a screw 12. Limit plates 13 are provided on both sides of the connecting plate 8. The limit plates 13 are fixedly connected to one side of the fixing plate 5. The screws 12 pass through the groove 11 and extend to the outside. A docking assembly is provided on one side of the lower mold 1 and the upper mold 3. The docking assembly includes a docking frame 14 and a docking groove 15. The docking frames 14 are fixedly connected to one side of the lower mold 1 and the upper mold 3. The docking grooves 15 are provided in the lower pressing block 2 and the upper pressing block 4. The docking frames 14 are slidably connected to the inside of the docking groove 15.

[0032] Specifically, when disassembling and assembling the mechanical structure, we need to pay special attention to the adjustment of the screw 12; by turning the screw 12, we can make the rectangular nut of the screw 12 precisely correspond to the groove 11 to achieve overlap; this step is crucial because it ensures that the connecting plate 8 can be pulled stably; once the rectangular nut of the screw 12 overlaps with the groove 11, we can pull the connecting plate 8; in this process, the snap column 9 will disengage from the snap hole 10; it is worth noting that the snap column 9 is made of soft rubber material; this material will not hinder the movement of the snap column 9 when it moves with the connecting plate 8, ensuring a smooth disassembly process; once the snap column 9 disengages from the snap hole 10, we can continue to pull the lower pressing block 2 or the upper pressing block 4; this step enables the docking frame 14 to disengage from the docking groove 15; this design allows the lower pressing block 2 and the upper pressing block 4 to be disassembled separately, greatly reducing the cost of parts that need to be replaced.

[0033] Reference Figure 1 , the lower surface of the upper pressing block 4 is fixedly connected with an inserting column 16, and the lower pressing block 2 is provided with an inserting hole 17, and the inserting column 16 is slidably connected to the inside of the inserting hole 17;

[0034] Specifically, during the cold heading forming of the mold, the corresponding upper mold 3 and lower mold 1 will be installed to the corresponding positions and then cold heading forming will be performed by controlling the upper mold 3 and the upper pressing block 4. During the cold heading operation, the corresponding upper mold 3 and the upper pressing block 4 will push the plug-in column 16 into the plug-in hole 17. When the plug-in column 16 and the plug-in hole 17 are fully docked, the corresponding cold heading operation is completed and can be separated.

[0035] Reference Figure 1 、 Figure 4 and Figure 5 , the lower pressing block 2 and the upper pressing block 4 are fixedly connected with a connecting column 18, the outer wall of the connecting column 18 is sleeved with a spring 19, one end of the spring 19 is fixedly connected to the lower pressing block 2 and the upper pressing block 4, the other end of the spring 19 is fixedly connected to a push plate 20, a limiting groove 23 is provided inside the connecting column 18, one side of the push plate 20 is fixedly connected to the limiting column 21, the outer wall of the limiting column 21 is fixedly connected to the limiting block 22, the limiting column 21 is slidably connected to the inside of the connecting column 18, and the limiting block 22 is slidably connected to the inside of the limiting groove 23;

[0036] Specifically, the corresponding cold-forged idler shaft sleeve rough piece may be stuck in the corresponding upper pressing block 4 or lower pressing block 2 in some cases; when this happens, the spring 19 will be squeezed, making it in a tense state; this tense state of the spring 19 will generate an elastic force, which has the characteristic of self-recovery. It is precisely because of the action of this elastic force that the push plate 20 connected thereto will be pushed; the push plate 20 will slide along the limiting groove 23 along the limiting block 22 at the fixed position of the limiting column 21; the purpose of this is to help the idler shaft sleeve rough piece that may be stuck between the upper pressing block 4 and the lower pressing block 2 to be demolded smoothly.

[0037] Working principle: During the cold forging of the mold, the corresponding upper mold 3 and lower mold 1 will be installed to the corresponding positions and then cold forging will be performed by controlling the upper mold 3 and the upper pressing block 4. During the cold forging operation, the corresponding upper mold 3 and the upper pressing block 4 will push the plug-in column 16 into the plug-in hole 17 to achieve complete docking. The corresponding cold forging operation is completed and can be separated. However, the idler shaft sleeve formed by cold forging may be damaged and may be stuck in the position of the corresponding upper pressing block 4 or the lower pressing block 2. At this time, the spring 19 is in an extruded state, so that the spring 19 can generate elastic force through its own restorability, thereby pushing the corresponding push plate 20, so that the push plate 20 slides along the limit groove 23 along with the limit block 22 at the position line of the limit column 21, thereby removing the idler shaft that may be stuck in the position of the lower pressing block 2 and the upper pressing block 4 and is difficult to demold. After the roughening is demoulded, the corresponding lower pressing block 2 and upper pressing block 4 may produce excessive wear and tear after a long period of cold heading operation. In order to maintain the integrity of the idler shaft sleeve roughening, it is necessary to inspect or replace it after a period of time. At this time, the screw 12 can be rotated so that the rectangular nut of the screw 12 overlaps with the groove 11, so that the corresponding connecting plate 8 can be pulled to make the corresponding snap column 9 disengage from the snap hole 10, and the corresponding snap column 9 is made of soft rubber material, and no movement obstruction will be generated when the connecting plate 8 drives the snap column 9 to disengage. After the corresponding snap column 9 disengages from the snap hole 10, the lower pressing block 2 or the upper pressing block 4 can be pulled to pull the docking frame 14 out of the docking groove 15, so that the corresponding lower pressing block 2 and the upper pressing block 4 can be disassembled separately, thereby reducing the cost of replacement.

[0038] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been 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 make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A cold heading forming die for an idler shaft sleeve blank, comprising a lower die (1), characterized in that: The top of the lower mold (1) is provided with a lower pressing block (2), the top of the lower pressing block (2) is provided with an upper mold (3), the bottom of the upper mold (3) is provided with an upper pressing block (4), the outer walls of the lower mold (1) and the upper mold (3) are fixedly connected with a fixing plate (5), one side of the fixing plate (5) is fixedly connected with a connecting block (6), the interior of the connecting block (6) is rotatably connected with a rotating column (7), the outer wall of the rotating column (7) is fixedly connected with a connecting plate (8), one side of the connecting plate (8) is fixedly connected with a buckle column (9), the lower pressing block (2) and the upper pressing block (4) are provided with snap holes (10), the snap columns (9) are slidably connected to the snap holes (10), the connecting plates (8) are provided with grooves (11), the fixing plates (5) are internally threaded with screws (12), and limiting plates (13) are provided on both sides of the connecting plates (8), the limiting plates (13) are fixedly connected to one side of the fixing plates (5), the screws (12) pass through the grooves (11) and extend to the outside, and docking components are provided on one side of the lower mold (1) and the upper mold (3).

2. The cold heading forming die for the idler shaft sleeve blank according to claim 1, characterized in that: The docking assembly comprises a docking frame (14) and a docking groove (15), wherein the docking frame (14) is fixedly connected to one side of the lower mold (1) and the upper mold (3), and the docking groove (15) is opened inside the lower pressing block (2) and the upper pressing block (4), and the docking frame (14) is slidably connected inside the docking groove (15).

3. The cold heading forming die for the idler shaft sleeve blank according to claim 1, characterized in that: The lower surface of the upper pressing block (4) is fixedly connected with an inserting column (16), and the lower pressing block (2) is provided with an inserting hole (17) therein.

4. The cold heading forming die for the idler shaft sleeve blank according to claim 3, characterized in that: The insertion column (16) is slidably connected inside the insertion hole (17).

5. The cold heading forming die for the idler shaft sleeve blank according to claim 1, characterized in that: The lower pressing block (2) and the upper pressing block (4) are both fixedly connected with connecting columns (18) inside, and the outer walls of the connecting columns (18) are both sleeved with springs (19).

6. The cold heading forming die for the idler shaft sleeve blank according to claim 5, characterized in that: One end of the spring (19) is fixedly connected to the inside of the lower pressing block (2) and the upper pressing block (4), and the other end of the spring (19) is fixedly connected to the push plate (20). A limiting groove (23) is provided inside the connecting column (18).

7. The cold heading forming die for the idler shaft sleeve blank according to claim 6, characterized in that: One side of the push plate (20) is fixedly connected to a limiting column (21), and the outer wall of the limiting column (21) is fixedly connected to a limiting block (22).

8. The cold heading forming die for the idler shaft sleeve blank according to claim 7, characterized in that: The limiting column (21) is slidably connected inside the connecting column (18), and the limiting blocks (22) are slidably connected inside the limiting grooves (23).

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