MIM forming part shaping tool

Abstract

The utility model discloses an MIM forming part shaping tool which comprises a punching rack, a fixed frame and a movable frame are arranged in the punching rack, fixed blocks are fixedly arranged on the surface of the fixed frame and the surface of the movable frame, a positioning block is arranged between the opposite faces of the fixed frame and the movable frame in a lap joint mode, and the positioning block is connected with the fixed frame and the movable frame in a lap joint mode. A connecting block is fixedly arranged on the surface of the positioning block, a moving block is movably arranged on the surfaces of the fixed frame and the moving frame, a guide block is fixedly arranged on the side, close to the center of the punching rack, of the moving block, a guide rod is movably arranged in the guide block, and a first spring is arranged on the surface of the guide rod; according to the device, the positioning block does not need to be fixed through a bolt, the positioning block can be rapidly disassembled and assembled, it is avoided that when positioning blocks of different specifications are replaced, a large amount of time needs to be consumed, and the shaping speed of the MIM forming part is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of workpiece processing, in particular to a MIM molded part shaping tool. Background Art

[0002] MIM is a molding method that injects a plasticized mixture of metal powder and its binder into a mold. It first mixes the selected powder with the binder, then granulates the mixture and then injects it into the required shape. Due to the need for subsequent sintering deformation, some parts will be deformed. Because their shape will be corrected, MIM molding parts shaping tooling is required.

[0003] The Chinese patent (application number: CN202121603511.4) discloses a "shaping tool for complex MIM parts". The shape of the workpiece to be processed is shaped by positioning blocks 1 and 2 to ensure that the shape size of the workpiece to be processed meets the requirements of production and processing, and the groove knife block is moved by the movement of the core support block 1, so that the groove knife block enters the groove on the outer wall of the workpiece to be processed for trimming to meet the size required for production and processing. In the shaping process, the notches on the inner hole and the outer wall are shaped and adjusted respectively, which improves the processing efficiency of the workpiece and solves the problems of high production cost, high labor intensity of staff, and low production efficiency. The sizes of the positioning blocks 1 and 2 of the patent are fixed. Therefore, when shaping MIM workpieces of different sizes, positioning blocks of different specifications need to be replaced. However, the positioning blocks 1 and 2 of the above-mentioned patent are fixed on the surfaces of the lower die and the upper die, and are usually fixed by multiple bolts and nuts. This fixing method takes a lot of time to disassemble and fix, and it is not convenient to replace the positioning blocks, resulting in the overall processing speed of the MIM workpiece being affected. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a MIM molded part shaping tooling for solving the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A MIM molded part shaping tool comprises a stamping machine frame, wherein a fixed frame and a movable frame are arranged inside the stamping machine frame, wherein the fixed frame is fixedly connected to the lower die of the stamping machine, and the movable frame is fixedly connected to the upper die of the stamping machine, and a fixed block is fixedly arranged on the surfaces of the fixed frame and the movable frame, and a driving assembly is arranged inside the fixed block, a positioning block is overlapped and arranged between the facing surfaces of the fixed frame and the movable frame, a connecting block is fixedly arranged on the surface of the positioning block, and a movable block is movably arranged on the surfaces of the fixed frame and the movable frame, and a guide block is fixedly arranged on the side of the movable block close to the center of the stamping machine frame, a guide rod is movably arranged inside the guide block, a first spring is arranged on the surface of the guide rod, and a plug-in block is fixedly arranged on one end of the guide rod away from the guide block, a mounting frame is fixedly arranged between the facing surfaces of the fixed frame and the movable frame, and a limiting assembly is arranged inside the mounting frame.

[0007] Preferably, the driving assembly comprises a fixing rod fixedly arranged inside the fixing block, and the driving block is slidably arranged on the surface of the fixing rod.

[0008] Preferably, the limiting assembly includes a second spring arranged inside the mounting frame, one end of the second spring is fixedly connected to the mounting frame, the other end of the second spring is fixedly provided with a limiting block, and a core support rod is fixedly provided on one side of the bottom limiting block close to the positioning block.

[0009] Preferably, a groove knife block is fixedly provided on one end of the core support rod on the right side close to the positioning block.

[0010] Preferably, a guide column is fixedly provided on the top of the fixed frame, and the guide column is movably connected to the movable frame.

[0011] Preferably, there are multiple first springs, one end of the first spring is fixedly connected to the guide block, and the other end of the first spring is fixedly connected to the plug-in block.

[0012] Preferably, there are two plug-in blocks, and the two plug-in blocks are symmetrically distributed.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: when installing the positioning block of the MIM molded part shaping tooling, the positioning block and the connecting block are pushed into the movable frame or the fixed frame, and the connecting block moves downward to contact the plug-in block. Since the bottom of the connecting block is arc-shaped, the plug-in block can be pushed to move, and the movement of the plug-in block compresses the first spring. When the plug-in block moves to the groove of the connecting block, the first spring is used to push the plug-in block to move into the groove of the connecting block. When removing the positioning block, it is only necessary to push the moving block to move through the driving assembly, and the moving block pulls the plug-in block away from the connecting block through the guide block and the guide rod, so that the positioning block and the connecting block can be taken out. The device does not need to fix the positioning block with bolts, and can quickly disassemble and assemble the positioning block, avoiding the need to spend a lot of time when replacing positioning blocks of different specifications, thereby improving the speed of MIM molded part shaping. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is the structural survey drawing of the utility model;

[0015] Figure 2 It is a left sectional view of the structure of the utility model;

[0016] Figure 3 It is a right sectional view of the structure of the utility model;

[0017] Figure 4 It is a schematic diagram of the local structure of the utility model;

[0018] Figure 5 Another partial structural diagram of the utility model;

[0019] Figure 6 for Figure 3 A magnified view of the structure at A;

[0020] Figure 7 for Figure 2 Enlarged view of the structure at B.

[0021] In the figure: 1, punch frame; 2, fixed frame; 3, movable frame; 4, fixed block; 5, fixed rod; 6, driving block; 7, movable block; 8, guide block; 9, guide rod; 10, first spring; 11, plug-in block; 12, connecting block; 13, positioning block; 14, mounting frame; 15, second spring; 16, limit block; 17, core support rod; 18, slot knife block; 19, guide column. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Reference Figure 1-7A MIM molded part shaping tool comprises a punching machine frame 1, a fixed frame 2 and a movable frame 3 are arranged inside the punching machine frame 1, the fixed frame 2 is fixedly connected to the lower die of the punching machine, the movable frame 3 is fixedly connected to the upper die of the punching machine, a fixed block 4 is fixedly arranged on the surface of the fixed frame 2 and the movable frame 3, a driving assembly is arranged inside the fixed block 4, the driving assembly comprises a fixed rod 5 fixedly arranged inside the fixed block 4, a driving block 6 is slidably arranged on the surface of the fixed rod 5, a positioning block 13 is overlapped between the facing surfaces of the fixed frame 2 and the movable frame 3, a connecting block 12 is fixedly arranged on the surface of the positioning block 13, and the driving block 6 is pushed to move on the surface of the fixed rod 5. Since the width of the driving block 6 is from The left end gradually becomes longer toward the right end, so when the driving block 6 is moving, it can push the moving block 7 to move toward the front and rear sides, and the plug-in block 11 is controlled to be away from the connecting block 12 by the moving block 7, so as to facilitate the removal of the restriction on the connecting block 12, thereby facilitating the removal of the positioning block 13. The surfaces of the fixed frame 2 and the moving frame 3 are movably provided with the moving block 7, and the side of the moving block 7 close to the center of the punching machine frame 1 is fixedly provided with a guide block 8, and the inside of the guide block 8 is movably provided with a guide rod 9, and the surface of the guide rod 9 is provided with a first spring 10, and the number of the first springs 10 is multiple, and one end of the first spring 10 is fixedly connected to the guide block 8, and the other end of the first spring 10 is fixedly connected to the plug-in block 11 The guide rod 9 is connected to the guide block 8, and a plug-in block 11 is fixedly provided at one end away from the guide block 8. The number of the plug-in blocks 11 is two, and the two plug-in blocks 11 are symmetrically distributed. The two plug-in blocks 11 are used to limit the connection block 12 to improve the fixing effect of the connection block 12. A mounting frame 14 is fixedly provided between the facing surfaces of the fixed frame 2 and the movable frame 3. A limited position component is arranged inside the mounting frame 14. When the positioning block 13 is installed in the MIM molded part shaping tooling, the positioning block 13 and the connection block 12 are pushed into the movable frame 3 or the fixed frame 2. The connection block 12 moves downward and contacts with the plug-in block 11. Since the bottom of the connection block 12 is arc-shaped, the plug-in block 11 can be pushed to move. The plug-in block 11 moves and compresses the first spring 10. When the plug-in block 11 moves to the groove of the connecting block 12, the first spring 10 pushes the plug-in block 11 to move into the groove of the connecting block 12 through the rebound effect of the first spring 10. When removing the positioning block 13, it is only necessary to push the moving block 7 to move through the driving assembly. The moving block 7 pulls the plug-in block 11 away from the connecting block 12 through the guide block 8 and the guide rod 9, so that the positioning block 13 and the connecting block 12 can be taken out. The device does not need to fix the positioning block 13 with bolts, and the positioning block 13 can be quickly disassembled and assembled, avoiding the need to spend a lot of time when replacing positioning blocks 13 of different specifications, thereby improving the shaping speed of MIM molded parts.

[0024] according to Figure 2 and Figure 7As shown, the limiting assembly includes a second spring 15 arranged inside the mounting frame 14, one end of the second spring 15 is fixedly connected to the mounting frame 14, and the other end of the second spring 15 is fixedly provided with a limiting block 16, and the bottom limiting block 16 is fixedly provided with a core support rod 17 on one side close to the positioning block 13, and the right core support rod 17 is fixedly provided with a groove knife block 18 on one end close to the positioning block 13. When the MIM molded part is placed inside the positioning block 13 and the core support rod 17 and the groove knife block 18 can enter the groove of the MIM molded part, the MIM molded part pushes the limiting block 16 to move, and the limiting block 16 moves to compress the second spring 15. The rebound effect of the second spring 15 can enhance the fixing effect of the MIM molded part, and the upper and lower relative limiting blocks 16 are adapted to each other so that the upper and lower limiting blocks 16 will not affect the contact of the positioning block 13.

[0025] according to Figure 1 As shown, a guide column 19 is fixedly provided on the top of the fixed frame 2, and the guide column 19 is movably connected to the movable frame 3. When the movable frame 3 moves downward, it moves along the guide column 19 to avoid the movable frame 3 from moving out of position, resulting in poor contact of the positioning block 13 and failure to shape the MIM molded part.

[0026] The electrical components mentioned in this article are all connected to an external main controller and 220V mains electricity, and the main controller can be a conventional known device for controlling a computer or the like.

[0027] When in use: place the MIM molded part inside the positioning block 13 at the bottom, and limit the MIM molded part through the core support rod 17, start the die punching machine, push the moving frame 3 to move downward and contact the fixed frame 2, so that the upper and lower positioning blocks 13 contact each other, and shape the outer dimensions of the MIM molded part through the positioning block 13, and adjust the grooves on the outer wall of the MIM molded part through the groove knife block 18. When the positioning block 13 needs to be replaced, push the driving block 6 to slide on the surface of the fixed rod 5, and the driving block 6 pushes the moving blocks 7 on the front and rear sides to move to both sides, and the moving blocks 7 pass through the guide blocks 8. The guide rod 9 pulls the plug-in block 11 away from the connecting block 12, so that the positioning block 13 and the connecting block 12 can be taken out. When installing a new positioning block 13, the positioning block 13 and the connecting block 12 are pushed into the movable frame 3 or the fixed frame 2. When the side of the connecting block 12 away from the positioning block 13 contacts the plug-in block 11, the plug-in block 11 is pushed to move. The plug-in block 11 moves to compress the first spring 10. When the plug-in block 11 moves to the groove of the connecting block 12, the first spring 10 is used to push the plug-in block 11 to reset, so that the plug-in block 11 moves into the groove of the connecting block 12.

[0028] To sum up, in the MIM molded part shaping tooling, when the positioning block 13 is installed, the positioning block 13 and the connecting block 12 are pushed into the movable frame 3 or the fixed frame 2, and the connecting block 12 moves downward to contact the plug-in block 11. Since the bottom of the connecting block 12 is arc-shaped, the plug-in block 11 can be pushed to move, and the plug-in block 11 moves and compresses the first spring 10. When the plug-in block 11 moves to the groove of the connecting block 12, the first spring 10 is used to push the plug-in block 11 to move into the groove of the connecting block 12. When removing the positioning block 13, it is only necessary to push the movable block 7 to move through the driving assembly. The movable block 7 pulls the plug-in block 11 away from the connecting block 12 through the guide block 8 and the guide rod 9, so that the positioning block 13 and the connecting block 12 can be taken out. The device does not need to fix the positioning block 13 with bolts, and can quickly disassemble and assemble the positioning block 13, avoiding the need to spend a lot of time when replacing positioning blocks 13 of different specifications, thereby improving the speed of MIM molded part shaping.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A MIM molded part shaping tool, comprising a punching machine frame (1), characterized in that: A fixed frame (2) and a movable frame (3) are arranged inside the punching machine frame (1); the fixed frame (2) is fixedly connected to the lower die of the punching machine; the movable frame (3) is fixedly connected to the upper die of the punching machine; fixed blocks (4) are fixedly arranged on the surfaces of the fixed frame (2) and the movable frame (3); a driving component is arranged inside the fixed block (4); a positioning block (13) is overlapped between the facing surfaces of the fixed frame (2) and the movable frame (3); a connecting block (12) is fixedly arranged on the surface of the positioning block (13); the fixed frame (2) and the movable frame (3) are fixedly connected to each other. A moving block (7) is movably provided on the surface of the moving frame (3); a guide block (8) is fixedly provided on one side of the moving block (7) close to the center of the punching machine frame (1); a guide rod (9) is movably provided inside the guide block (8); a first spring (10) is provided on the surface of the guide rod (9); a plug-in block (11) is fixedly provided on one end of the guide rod (9) away from the guide block (8); a mounting frame (14) is fixedly provided between the facing surfaces of the fixed frame (2) and the moving frame (3); a limiting component is provided inside the mounting frame (14).

2. A MIM molded part shaping tool according to claim 1, characterized in that: The driving assembly comprises a fixing rod (5) fixedly arranged inside the fixing block (4), and a driving block (6) is slidably arranged on the surface of the fixing rod (5).

3. A MIM molded part shaping tool according to claim 1, characterized in that: The limiting assembly comprises a second spring (15) arranged inside the mounting frame (14), one end of the second spring (15) is fixedly connected to the mounting frame (14), the other end of the second spring (15) is fixedly provided with a limiting block (16), and a core support rod (17) is fixedly provided on one side of the limiting block (16) at the bottom close to the positioning block (13).

4. A MIM molded part shaping tool according to claim 3, characterized in that: A groove knife block (18) is fixedly provided at one end of the core support rod (17) on the right side close to the positioning block (13).

5. The MIM molded part shaping tool according to claim 1, characterized in that: A guide column (19) is fixedly arranged on the top of the fixed frame (2), and the guide column (19) is movably connected to the movable frame (3).

6. The MIM molded part shaping tool according to claim 1, characterized in that: The number of the first springs (10) is plural, one end of the first spring (10) is fixedly connected to the guide block (8), and the other end of the first spring (10) is fixedly connected to the plug-in block (11).

7. The MIM molded part shaping tool according to claim 1, characterized in that: The number of the plug-in blocks (11) is two, and the two plug-in blocks (11) are symmetrically distributed.

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