Cold welding device for punch of powder metallurgy die rough blank

Abstract

This utility model provides a cold welding device for a powder metallurgy mold blank punch, comprising: a worktable with a support plate on one side of its top, and a T-shaped groove on the inner side of the support plate; a positioning assembly including a placement cylinder, a lead screw, and an outer frame. The placement cylinder is rotatably positioned at the center of the top of the worktable, and four sets of stepped blocks are evenly arranged on the inner side of the placement cylinder. A rotating ring is provided on the outer side of the lead screw, and the rotating ring is rotatably embedded in the inner side of the support plate. A T-shaped block is threaded on the outer side of the lead screw, and the outer frame is provided at the outer end of the T-shaped block. By rotating the handle, the lead screw can be rotated, which in turn moves the outer frame towards the working end of the punch through the T-shaped block, so that the top block is positioned at the center of one end of the working end of the punch, thereby applying pressure to the working end of the punch. This ensures that the working end of the punch and the punch base end are in close contact, thus preventing gaps from appearing during welding of the punch base end and the working end of the punch.

Description

Technical Field

[0001] This utility model relates to the field of powder metallurgy mold manufacturing technology, specifically to a cold welding device for powder metallurgy mold blank punches. Background Technology

[0002] In the process of preparing products using powder metallurgy technology, alloy powder is first filled into the cavity of a special mold according to a preset amount. Then, the hydraulic cylinder is driven by the hydraulic transmission system to output stable pressure, which drives the blank punch to apply a precise and uniform stamping force to the alloy powder in the mold cavity, thereby completing the initial forming of the product and laying the foundation for subsequent sintering and other processes.

[0003] The structure of a punch is usually assembled from two parts: the working end and the base end. Since the working end needs to be in direct contact with the alloy powder, cemented carbide is usually used. The base end does not directly participate in the core operation, and in order to control production costs, ordinary steel is generally used. Due to the difference in material properties between cemented carbide and ordinary steel, cold welding technology is usually used to weld the two together to ensure the tightness and stability of the overall structure of the punch.

[0004] However, the existing welding process between the base end and the working end of the punch still has the following problems: Usually, the operator holds the base end and the working end by hand to position them, first performs spot welding at the connection to achieve temporary fixation, and then carries out the overall welding operation. This operation method, which relies on manual hand positioning, is prone to causing the connection surface between the base end and the working end to not fit tightly, and small gaps are easily generated. This may cause the local bonding force to be weak after welding, so that when the punch is subjected to high pressure in subsequent stamping operations, the connection between the base end and the working end is prone to breakage due to stress concentration. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a cold welding device for the rough blank punch of powder metallurgy mold, which can solve the existing problems.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows:

[0007] A cold welding device for powder metallurgy mold blank punches, comprising:

[0008] The workbench has a support plate on one side of its top, and a T-shaped groove is opened on the inner side of the support plate.

[0009] The positioning assembly includes a placement cylinder, a lead screw, and an outer frame. The placement cylinder is rotatably positioned at the top center of the worktable. Four sets of stepped blocks are evenly arranged inside the placement cylinder. A rotating ring is provided on the outside of the lead screw, and the rotating ring is rotatably embedded in the inside of the support plate. A T-shaped block is threaded on the outside of the lead screw, and an outer frame is provided at the outer end of the T-shaped block. A through hole is provided through the inside of the outer frame, and a rotating column is rotatably embedded inside the through hole. A through hole is provided on one side of the outer frame.

[0010] The punch base end is placed between four sets of stepped blocks;

[0011] The working end of the punch is placed on top of the punch base end;

[0012] The welding assembly includes a welding machine, a welding torch, and a fixing component. The welding machine is located on the other side of the top of the workbench. A connecting line is provided on the top of the welding machine, and a welding torch is provided at one end of the connecting line. The welding torch is slidably inserted into the inside of the perforation.

[0013] Furthermore, the T-shaped block is slidably embedded inside the T-shaped groove, and a handle is provided at the outer end of the lead screw.

[0014] Furthermore, a top block is provided at one end of the rotating column, and a handle is provided at the other end of the rotating column. The top block is engaged with the top of the working end of the punch.

[0015] Furthermore, a rubber pad is provided on the outer side of the stepped block.

[0016] Furthermore, the fixing component includes symmetrically opened limiting grooves on both sides of the perforation, and two sets of limiting blocks are symmetrically arranged on the outside of the welding torch, with the limiting blocks slidingly embedded in the inner side of the limiting groove.

[0017] Furthermore, two sets of vertical sliding grooves are symmetrically arranged on one side of the top of the outer frame. The vertical sliding grooves are connected to the limiting grooves. The fixing rod is slidably inserted into the inner side of the vertical sliding groove. A pull ring is provided at the top of the fixing rod. Multiple sets of fixing grooves are provided through the inner side of the limiting block. The fixing rod is inserted into the inner side of the fixing groove.

[0018] Compared with the prior art, the beneficial effects of this utility model include:

[0019] 1. When it is necessary to weld the punch base end and the punch working end together, the worker first places the punch base end into the placement cylinder. The punch base end can be fixed by the rubber pads on the four sets of stepped blocks. Then, the punch working end is placed above the punch base end, so that the punch base end and the punch working end are arranged coaxially. Then, the handle is turned, which drives the lead screw to rotate. This drives the outer frame to move towards the punch working end through the T-shaped block, so that the top block is pressed against the center of one end of the punch working end, thereby applying pressure to the punch working end. This ensures that the punch working end and the punch base end are in a tight fit, thus avoiding gaps when welding the punch base end and the punch working end.

[0020] 2. During welding, the worker controls the welding torch to contact the connection between the punch base end and the punch working end according to the specifications of the punch base end and the punch working end. Then, the worker presses the pull ring to make the fixing rod snap into the fixing groove, thereby fixing the position of the welding torch. This allows the welding torch to continuously output power to the connection between the punch base end and the punch working end during welding. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of the cold welding device for the rough blank punch of the powder metallurgy mold of this utility model;

[0023] Figure 2 This is a schematic diagram of the composition structure of the rough blank punch of this utility model;

[0024] Figure 3 This is a schematic diagram of the rotating column structure of this utility model;

[0025] Figure 4 This is a schematic diagram of the cross-sectional structure of the placement cylinder of this utility model;

[0026] Figure 5 This is a schematic diagram of the cross-sectional structure of the outer frame of this utility model;

[0027] Figure 6 This is a schematic diagram of the welding torch structure of this utility model;

[0028] The diagram shows the following labels: 1. Workbench; 2. Support plate; 3. Placement cylinder; 4. Punch base end; 5. Punch working end; 6. Lead screw; 7. Handle; 8. T-slot; 9. Rotating column; 10. Outer frame; 11. Pull ring; 12. Welding torch; 13. Welding machine; 14. Handle; 15. Top block; 16. Step block; 17. Rubber pad; 18. T-block; 19. Through hole; 20. Fixing rod; 21. Limiting groove; 22. Through hole; 23. Vertical sliding groove; 24. Limiting block; 25. Fixing groove; 26. Rotating ring; 27. Connecting line. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0030] like Figure 1 - Figure 6 As shown, this utility model provides a cold welding device for powder metallurgy mold blank punches, comprising:

[0031] The workbench 1 has a support plate 2 on one side of its top, and a T-shaped groove 8 is provided on the inner side of the support plate 2.

[0032] The positioning assembly includes a placement cylinder 3, a lead screw 6, and an outer frame 10. The placement cylinder 3 is located at the top center of the workbench 1. Four sets of stepped blocks 16 are evenly arranged on the inner side of the placement cylinder 3. A rotating ring 26 is provided on the outer side of the lead screw 6. The rotating ring 26 is rotatably embedded in the inner side of the support plate 2. A T-shaped block 18 is threaded on the outer side of the lead screw 6. The outer end of the T-shaped block 18 is provided with the outer frame 10. A through hole 19 is opened through the inner side of the outer frame 10. A rotating column 9 is rotatably embedded in the inner side of the through hole 19. A through hole 22 is opened through one side of the outer frame 10.

[0033] The punch base end 4 is placed between four sets of stepped blocks 16;

[0034] The punch working end 5 is placed on top of the punch base end 4;

[0035] The welding assembly includes a welding machine 13, a welding torch 12, and a fixing component. The welding machine 13 is located on the other side of the top of the workbench 1. A connecting line 27 is provided on the top of the welding machine 13, and a welding torch 12 is provided at one end of the connecting line 27. The welding torch 12 is slidably inserted into the inside of the through hole 22.

[0036] In the above scheme:

[0037] 1. By controlling the lead screw 6, the T-block 18 can be moved within the T-groove 8, which in turn moves the outer frame 10, thereby applying pressure to the punch base end 4 and the punch working end 5, so that their contact surfaces remain in a tight state.

[0038] 2. By setting four sets of stepped blocks 16, the ends 4 of cylindrical punch bases of different specifications can be limited;

[0039] 3. A welding machine 13 is placed on the right side of the workbench 1 and connected to the welding torch 12 via a long connecting cable 27; the welding torch 12 slides through the through hole 22 and is positioned in conjunction with the fixing component.

[0040] In this embodiment, the T-shaped block 18 is slidably embedded in the inner side of the T-shaped groove 8, and the outer end of the lead screw 6 is provided with a handle 7.

[0041] In the above scheme: the operator turns the handle 7, and the T-block 18 moves along the T-groove 8 through the transmission of the lead screw 6.

[0042] In this embodiment, a top block 15 is provided at one end of the rotating column 9, and a handle 14 is provided at the other end of the rotating column 9. The top block 15 is in contact with the top of the punch working end 5.

[0043] In the above scheme: during operation, the top block 15 can fix the working end 5 of the punch, so that when the rotating column 9 rotates, it drives the working end 5 of the punch to rotate.

[0044] In this embodiment, a rubber pad 17 is provided on the outer side of the stepped block 16.

[0045] In the above scheme: the inner surface of the rubber pad 17 is processed with stepped dimensions, and the contact part with the punch base end 4 is provided with a deep diamond-shaped anti-slip texture. The rubber pad 17 can fix the punch base end 4, thereby preventing the punch base end 4 from rotating.

[0046] In this embodiment, the fixing component includes symmetrically opened limiting grooves 21 on both sides of the through hole 22, and two sets of limiting blocks 24 are symmetrically arranged on the outside of the welding torch 12. The limiting blocks 24 are slidably embedded in the inner side of the limiting grooves 21.

[0047] In the above scheme, two sets of limiting blocks 24 are installed on both sides of the welding torch 12 rod. The limiting blocks 24 and the limiting groove 21 are matched. After assembly, the welding torch 12 can move freely along the axial direction, which can prevent the welding torch 12 from rotating, thereby ensuring the stability of the welding angle.

[0048] In this embodiment, two sets of vertical sliding grooves 23 are symmetrically arranged on one side of the top of the outer frame 10. The vertical sliding grooves 23 communicate with the limiting grooves 21. The fixing rods 20 are slidably inserted into the inner side of the vertical sliding grooves 23. A pull ring 11 is provided at the top of the fixing rods 20. Multiple sets of fixing grooves 25 are provided through the inner side of the limiting block 24. The fixing rods 20 are inserted into the inner side of the fixing grooves 25. Two sets of fixing rods are vertically and symmetrically arranged on the bottom surface of the pull ring. Each set of fixing rods slides into a set of vertical sliding grooves. The bottom ends of the two sets of fixing rods can be lifted up and retracted into the vertical sliding grooves, or lowered down and extended into the limiting grooves to be inserted into the fixing grooves to position the welding torch.

[0049] In the above scheme: when in use, pulling the pull ring 11 will release the welding gun 12, which makes it easy to fix the position of the welding gun 12. After being released, it will automatically lock, which can meet the welding position adjustment needs of punches of different specifications.

[0050] In this embodiment, when it is necessary to weld the punch base end 4 to the punch working end 5, the operator first places the punch base end 4 into the placement cylinder 3 according to its specifications. Due to the special shape of the stepped block 16, and the rubber pad 17 installed on the outside of the stepped block 16, the punch base end 4 can be limited by the four sets of stepped blocks 16. The rubber pad 17 can reduce the friction between the stepped block 16 and the punch base end 4, thereby preventing the punch base end 4 from... Rotate the punch, then place the working end 5 of the punch on top of the base end 4 of the punch, so that the base end 4 of the punch and the working end 5 of the punch are aligned coaxially. Then, by rotating the handle 7, the lead screw 6 can be rotated. The rotation of the lead screw 6 can drive the T-block 18 to move within the T-slot 8, thereby driving the outer frame 10 to move, so that the top block 15 presses against the top of the working end 5 of the punch, thereby applying pressure to the working end 5 of the punch, thus ensuring that the working end 5 of the punch and the base end 4 of the punch are in close contact. This prevents gaps from appearing at the connection between the punch base end 4 and the punch working end 5 during welding. Then, according to the specifications of the punch base end 4, the operator controls the welding torch 12 to slide inside the perforation 22, making the welding torch 12 contact the connection between the punch base end 4 and the punch working end 5. At this time, the limiting block 24 slides inside the limiting groove 21, thus preventing the welding torch 12 from rotating during welding. Then, the operator presses the pull ring 11, causing the fixing rod 20 to engage inside the fixing groove 25, thereby achieving butt welding. The position of the gun 12 is fixed because the placement cylinder 3 is rotatably set on the workbench 1, the rotating column 9 is rotatably connected to the outer frame 10, and then the operator controls the handle 14 to rotate, which can drive the punch base end 4 and the punch working end 5 to rotate simultaneously. Then the operator starts the welding machine 13, so that when the punch working end 5 and the punch base end 4 rotate, the welding gun 12 can fully weld the connection between the punch base end 4 and the punch working end 5, so that the punch base end 4 and the punch working end 5 can be welded more tightly.

[0051] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0052] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A cold welding device for a powder metallurgy mold blank punch, characterized in that, include: The workbench (1) has a support plate (2) on one side of its top, and a T-shaped groove (8) is provided on the inner side of the support plate (2). The positioning assembly includes a placement cylinder (3), a lead screw (6), and an outer frame (10). The placement cylinder (3) is located at the top center of the workbench (1). Four sets of stepped blocks (16) are evenly arranged on the inner side of the placement cylinder (3). A rotating ring (26) is provided on the outer side of the lead screw (6). The rotating ring (26) is rotatably embedded in the inner side of the support plate (2). A T-shaped block (18) is threaded on the outer side of the lead screw (6). An outer frame (10) is provided at the outer end of the T-shaped block (18). A through hole (19) is opened through the inner side of the outer frame (10). A rotating column (9) is rotatably embedded in the inner side of the through hole (19). A through hole (22) is opened through one side of the outer frame (10). The punch base end (4) is placed between four sets of stepped blocks (16); The punch working end (5) is placed on top of the punch base end (4); The welding assembly includes a welding machine (13), a welding torch (12), and a fixing component. The welding machine (13) is located on the other side of the top of the workbench (1). A connecting line (27) is provided on the top of the welding machine (13). A welding torch (12) is provided at one end of the connecting line (27). The welding torch (12) is slidably inserted into the inside of the perforation (22).

2. The cold welding device for powder metallurgy mold blank punch according to claim 1, characterized in that: The T-shaped block (18) is slidably embedded in the inner side of the T-shaped groove (8), and the outer end of the lead screw (6) is provided with a handle (7).

3. The cold welding device for powder metallurgy mold blank punch according to claim 2, characterized in that: One end of the rotating column (9) is provided with a top block (15), and the other end of the rotating column (9) is provided with a handle (14). The top block (15) is in contact with the top of the punch working end (5).

4. The cold welding device for powder metallurgy mold blank punch according to claim 3, characterized in that: A rubber pad (17) is provided on the outside of the stepped block (16).

5. The cold welding device for powder metallurgy mold blank punch according to claim 1, characterized in that: The fixing component includes symmetrically opened limiting grooves (21) on both sides of the perforation (22), and two sets of limiting blocks (24) symmetrically arranged on the outside of the welding gun (12), with the limiting blocks (24) slidingly embedded in the inner side of the limiting grooves (21).

6. The cold welding device for powder metallurgy mold blank punch according to claim 1, characterized in that: The top side of the outer frame (10) is symmetrically provided with two sets of vertical sliding grooves (23). The vertical sliding grooves (23) are connected to the limiting grooves (21). The fixing rod (20) is slidably inserted into the inner side of the vertical sliding grooves (23). The top of the fixing rod (20) is provided with a pull ring (11). The inner side of the limiting block (24) is provided with multiple sets of fixing grooves (25). The fixing rod (20) is inserted into the inner side of the fixing grooves (25).

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