Mim article internal support shaping device

Abstract

The utility model discloses MIM product inner support shaping device, including upper die subassembly, lower die subassembly and be located on the lower die subassembly lower die, oblique roof and first elastic part, oblique roof penetrates the lower die, and oblique roof is close to the one end of upper die subassembly and sets up to one side inclination, and the other side is compatible with the inner wall surface of MIM product, first elastic part is used for drive oblique roof and move to the direction close to upper die subassembly. When the utility model discloses MIM product inner support shaping device opening, the elasticity of first elastic part drives oblique roof and moves to the direction close to upper die subassembly, and oblique roof pushes MIM product, and makes MIM product move to the direction away from lower die, and conveniently takes out MIM product.

Description

Technical Field

[0001] This utility model relates to the field of shaping device technology, and in particular to an internal support shaping device for MIM products. Background Technology

[0002] MIM (Metal Injection Molding) is a widely used metal fabrication process in manufacturing. MIM is a molding method that involves injecting a plasticized mixture of metal powder and binder into a mold. It involves first mixing the selected metal powder with the binder, then granulating the mixture before injection molding into the desired shape. However, after injection molding, the resulting semi-finished product undergoes debonding and sintering. Irregular deformation can occur during debonding and sintering, leading to defective products. For example, in the production of products with inward-curving sides, after sintering, the inward-curving areas tend to shrink and deform inwards, causing the shape and dimensions of the product to deviate from the preset values. Therefore, a shaping device with an inclined ejector is typically used to reshape the product. However, existing shaping mechanisms often result in the MIM product being tightly fastened to the lower mold core and the inclined ejector after shaping, making it difficult to remove the shaped product. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a device for shaping and supporting MIM products that facilitates the removal of shaped MIM products.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: an internal support and shaping device for MIM products, including an upper mold assembly, a lower mold assembly, and a lower mold core, an inclined ejector and a first elastic element disposed on the lower mold assembly; the inclined ejector penetrates the lower mold core; one end of the inclined ejector near the upper mold assembly is inclined to one side, and the other side is adapted to the inner wall surface of the MIM product; the first elastic element is used to drive the inclined ejector to move towards the upper mold assembly.

[0005] Furthermore, the lower mold assembly is also provided with an ejector pin and a second elastic element. The ejector pin is disposed through the lower mold core, and the second elastic element is used to drive the ejector pin to move toward the upper mold assembly.

[0006] Furthermore, the upper mold assembly is provided with a contour insert, which protrudes from the side of the upper mold assembly near the lower mold assembly, and the contour insert is adapted to the shape of part of the outer wall surface of the MIM product.

[0007] Furthermore, the lower mold assembly is also equipped with a limiting block, and the inclined ejector is equipped with a slot. The limiting block is inserted into the slot to limit the travel of the inclined ejector.

[0008] Furthermore, the lower mold assembly is also provided with a contour pin, which penetrates the lower mold core and the end of the contour pin protrudes from the side of the lower mold core near the upper mold assembly.

[0009] Furthermore, the lower mold assembly is provided with at least one slider, which is slidable relative to the lower mold assembly to approach or move away from the lower mold core. The side of the slider that approaches the lower mold core is adapted to a portion of the outer wall surface of the MIM article. The upper mold assembly is provided with a shovel base for driving the slider.

[0010] Furthermore, the lower mold assembly is provided with a slide groove, and the slider slides in conjunction with the slide groove.

[0011] Furthermore, the end of the slide away from the lower mold core is connected to the outer side of the lower mold assembly, and a limiting element is provided in the slide to limit the movement stroke of the slider.

[0012] Furthermore, the slider includes a sliding seat and an adapter block. The sliding seat is slidably connected to the lower mold assembly, and the adapter block is located on the side of the sliding seat near the lower mold core. The adapter block is adapted to the shape of part of the outer wall surface of the MIM product.

[0013] Furthermore, a third elastic element is provided on the side of the slider near the lower mold core.

[0014] The beneficial effects of this utility model are as follows: When the MIM product internal support shaping device opens the mold, the elastic force of the first elastic element drives the inclined ejector to move towards the direction of the upper mold assembly. The inclined ejector pushes the MIM product, causing the MIM product to move away from the lower mold core, making it easier to remove the MIM product. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the MIM product internal support shaping device according to Embodiment 1 of this utility model;

[0016] Figure 2 This is a top view of the MIM product internal support shaping device according to Embodiment 1 of this utility model;

[0017] Figure 3 for Figure 2 Sectional view of section AA in the image;

[0018] Figure 4 for Figure 2 Sectional view of section BB in the middle;

[0019] Figure 5 This is a partial structural diagram of the MIM product internal support shaping device according to Embodiment 1 of this utility model. Figure 1 ;

[0020] Figure 6 for Figure 5 Enlarged detail of section C;

[0021] Figure 7 This is a schematic diagram of the slider and the third elastic element in the MIM product inner support shaping device according to Embodiment 1 of this utility model;

[0022] Figure 8 This is a partial structural diagram of the MIM product internal support shaping device according to Embodiment 1 of this utility model. Figure 2 .

[0023] Label Explanation:

[0024] 1. Upper mold assembly; 11. Shovel base; 12. Contouring insert;

[0025] 2. Lower mold assembly; 22. Limiting block; 23. Slide groove; 24. Limiting component;

[0026] 3. Lower mold core;

[0027] 4. Sloping top; 41. First elastic element; 42. Slot;

[0028] 5. Ejector pin; 51. Second elastic element;

[0029] 6. Contour pin;

[0030] 7. Slider; 71. Sliding seat; 72. Adaptor block; 73. Third elastic element;

[0031] 8. Upper mold core;

[0032] 9. MIM products. Detailed Implementation

[0033] To explain in detail the technical content, objectives, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0034] Please refer to Figures 1 to 8 The MIM product internal support shaping device includes an upper mold assembly 1, a lower mold assembly 2, and a lower mold core 3, an inclined ejector 4, and a first elastic member 41 disposed on the lower mold assembly 2; the inclined ejector 4 penetrates the lower mold core 3; one end of the inclined ejector 4 near the upper mold assembly 1 is inclined to one side, and the other side is adapted to the inner wall surface of the MIM product 9; the first elastic member 41 is used to drive the inclined ejector 4 to move towards the upper mold assembly 1.

[0035] As can be seen from the above description, the beneficial effects of this utility model are as follows: when the MIM product inner support shaping device opens the mold, the elastic force of the first elastic element 41 drives the inclined ejector 4 to move towards the direction close to the upper mold assembly 1, and the inclined ejector 4 pushes the MIM product 9, causing the MIM product 9 to move away from the lower mold core 3, making it convenient to remove the MIM product 9.

[0036] Furthermore, the lower mold assembly 2 is also provided with an ejector pin 5 and a second elastic element 51. The ejector pin 5 is disposed through the lower mold core 3, and the second elastic element 51 is used to drive the ejector pin 5 to move toward the upper mold assembly 1.

[0037] As described above, when the MIM product 9 is being molded and opened, the second elastic element 51 applies a pushing force to the MIM product 9 through the ejector pin 5, causing the MIM product 9 to move away from the lower mold core 3, making it easier to remove the MIM product 9.

[0038] Furthermore, the upper mold assembly 1 is provided with a contour insert 12, which protrudes from the side of the upper mold assembly 1 near the lower mold assembly 2, and the contour insert 12 is adapted to the shape of part of the outer wall surface of the MIM product 9.

[0039] As described above, the contour insert 12 can compress the outer wall surface of the MIM product 9 during mold closing, thereby correcting the shape of the MIM product 9.

[0040] Furthermore, the lower mold assembly 2 is also provided with a limiting block 22, and the inclined ejector 4 is provided with a slot 42. The limiting block 22 is inserted into the slot 42 to limit the movement stroke of the inclined ejector 4.

[0041] As can be seen from the above description, the limiting block 22 can prevent the inclined ejector 4 from disengaging from the lower mold core 3.

[0042] Furthermore, the lower mold assembly 2 is also provided with a contour pin 6, which penetrates the lower mold core 3, and the end of the contour pin 6 protrudes from the side of the lower mold core 3 that is close to the upper mold assembly 1.

[0043] As described above, the contour pin 6 is used to insert into the hole structure of the MIM product 9 to ensure that the hole structure of the MIM product 9 does not deform during the shaping process.

[0044] Furthermore, the lower mold assembly 2 is provided with at least one slider 7, which is slidable relative to the lower mold assembly 2 to approach or move away from the lower mold core 3. The side of the slider 7 that approaches the lower mold core 3 is adapted to a portion of the outer wall surface of the MIM article 9. The upper mold assembly 1 is provided with a shovel base 11 for driving the slider 7.

[0045] As described above, when the mold is closed, the slider 7 can restrict the shape and size of the MIM product 9 from the outside, which can further improve the dimensional accuracy of the corrected MIM product 9 and prevent the MIM product 9 from breaking. When the mold is opened, the slider 7 can move away from the lower mold core 3 to facilitate the removal of the MIM product 9.

[0046] Furthermore, the lower mold assembly 2 is provided with a slide groove 23, and the slider 7 slides and engages with the slide groove 23.

[0047] As can be seen from the above description, the sliding connection between the lower mold assembly 2 and the slider 7 is simple, stable, and conducive to improving service life.

[0048] Furthermore, the end of the slide groove 23 away from the lower mold core 3 is connected to the outer side of the lower mold assembly 2, and a limiting member 24 is provided in the slide groove 23 to limit the movement stroke of the slider 7.

[0049] As can be seen from the above description, the slide 23 connects to the outer side of the lower mold assembly 2, which is conducive to cutting and forming, and the limiting member 24 can prevent the slider 7 from exiting the lower mold assembly 2 from the end opening of the slide 23.

[0050] Furthermore, the slider 7 includes a sliding seat 71 and an adapter block 72. The sliding seat 71 is slidably connected to the lower mold assembly 2, and the adapter block 72 is located on the side of the sliding seat 71 near the lower mold core 3. The adapter block 72 is adapted to the shape of part of the outer wall surface of the MIM product 9.

[0051] As can be seen from the above description, the adapter block 72 can be replaced according to the shape of the MIM product 9, which helps to extend the service life of the slider 7 and reduce the maintenance cost of the slider 7.

[0052] Furthermore, a third elastic element 73 is provided on the side of the slider 7 near the lower mold core 3.

[0053] As can be seen from the above description, when the mold is opened, the elastic force applied by the third elastic element 73 to the slider 7 will drive the slider 7 to move away from the lower mold core 3, thereby facilitating the removal of the MIM product 9.

[0054] Please refer to Figures 1 to 8 The first embodiment of this utility model is: an internal support shaping device for MIM products, used to shape MIM products 9.

[0055] like Figure 3 and Figure 6 As shown, the MIM product internal support shaping device includes an upper mold assembly 1, a lower mold assembly 2, and a lower mold core 3, an inclined ejector 4, and a first elastic member 41 disposed on the lower mold assembly 2; the inclined ejector 4 penetrates the lower mold core 3; one end of the inclined ejector 4 near the upper mold assembly 1 is inclined to one side, and the other side is adapted to the shape of the inner wall surface of the MIM product 9; the first elastic member 41 is used to drive the inclined ejector 4 to move towards the upper mold assembly 1.

[0056] Specifically, the lower mold assembly 2 includes a lower mold panel, a first lower mold plate, and a second lower mold plate, which are fixedly connected in sequence. The lower mold core 3 is fixedly installed on the second lower mold plate. The lower mold core 3 is provided with a first guide hole. The side of the first guide hole away from the inward snapping of the MIM product 9 is an inclined surface. The end of this inclined surface near the upper mold assembly 1 is inclined in the direction away from the inward snapping of the MIM product 9. An inclined ejector 4 is provided in the first guide hole. The first lower mold plate is provided with a second guide hole, which connects the first guide hole and the side of the first lower mold plate near the lower mold panel. The end of the inclined ejector 4 away from the upper mold assembly 1 is provided with a spring pin. The spring pin is provided in the second guide hole and can slide along the second guide hole to approach or move away from the upper mold assembly 1. An elastic element is provided in the second guide hole, and the two ends of the elastic element abut against the spring pin and the lower mold panel, respectively. There are two inclined ejectors 4, which are used to correct the inward snapping of the MIM product 9 relative to two other parts. The inclined ejectors 4, the first guide hole, the second guide hole, the first elastic element 41, and the spring pin are arranged in a one-to-one correspondence. The first elastic element 41 is a spring. In other embodiments, the number of inclined tops 4 may be one, three or more; the first elastic element 41 may be a spring sheet or a spring pad.

[0057] like Figure 4 and Figure 6 As shown, the lower mold assembly 2 is also provided with an ejector pin 5 and a second elastic element 51. The ejector pin 5 is disposed through the lower mold core 3, and the second elastic element 51 is used to drive the ejector pin 5 to move towards the upper mold assembly 1. Specifically, the first lower mold plate is provided with a second guide hole, which pierces the first lower mold plate. The lower mold core 3 is provided with a first through hole communicating with the second guide hole. The ejector pin 5 passes through the first through hole on the lower mold core 3, and the end of the ejector pin 5 away from the upper mold assembly 1 slides and engages with the second guide hole. The second elastic element 51 is disposed in the second guide hole, and the two ends of the second elastic element 51 abut against the ejector pin 5 and the lower mold plate, respectively. There are two ejector pins 5, and the ejector pin 5, the second guide hole, the first through hole, and the second elastic element 51 are arranged in a one-to-one correspondence. The second elastic element 51 is a spring. In other embodiments, the number of ejector pins 5 can be one, three, or more; the second elastic element 51 can be a spring sheet or a spring pad.

[0058] like Figure 4 and Figure 8As shown, the upper mold assembly 1 is provided with a contour insert 12. The contour insert 12 protrudes from the side of the upper mold assembly 1 near the lower mold assembly 2, and the end of the contour insert 12 near the lower mold assembly 2 is adapted to the shape of part of the outer wall surface of the MIM product 9. Specifically, the upper mold assembly 1 includes an upper mold panel, an upper template, and an upper mold core 8. The upper mold panel and the upper template are fixedly connected, and the upper mold core 8 is fixedly installed on the upper template. The upper mold core 8 is provided with an insert hole, and the contour insert 12 is disposed in the insert hole. The side wall of the end of the contour insert 12 away from the lower mold assembly 2 is provided with a protruding limiting part, and the inner wall of the insert hole is provided with a groove for accommodating the limiting part of the contour insert 12. There are two contour inserts 12, and the contour inserts 12 and insert holes are arranged in a one-to-one correspondence. In other embodiments, the number of contour inserts 12 may be one, three, or more.

[0059] like Figure 3 As shown, the lower mold assembly 2 is also provided with a limiting block 22, and the side of the inclined ejector 4 is provided with a slot 42. The limiting block 22 is inserted into the slot 42 to limit the movement stroke of the inclined ejector 4. Specifically, the limiting block 22 is detachably connected to the lower mold core 3 by screws. The length of the slot 42 is greater than the thickness of the limiting block 22. The inclined ejector 4, the limiting block 22, and the slot 42 are arranged in a one-to-one correspondence.

[0060] like Figure 4 and Figure 6 As shown, the lower mold assembly 2 is also provided with a contour pin 6, which penetrates the lower mold core 3, and the end of the contour pin 6 protrudes from the side of the lower mold core 3 closest to the upper mold assembly 1. Specifically, the lower mold core 3 is provided with a countersunk hole, and the contour pin 6 is disposed in the countersunk hole, with the end of the contour pin 6 away from the upper mold assembly 1 abutting against the first lower mold plate. The contour pin 6 is correspondingly provided with a contour insert 12, and the contour insert 12 is provided with a clearance hole to avoid the contour pin 6. The number of contour pins 6 is two. In other embodiments, the number of contour pins 6 may be one, three or more.

[0061] like Figures 3 to 8 As shown, the lower mold assembly 2 is provided with at least one slider 7. The slider 7 is slidable relative to the lower mold assembly 2 to move closer to or away from the lower mold core 3. The side of the slider 7 that is close to the lower mold core 3 is adapted to a portion of the outer wall surface of the MIM product 9. The upper mold assembly 1 is provided with a shovel base 11 for driving the slider 7. Specifically, there are four sliders 7, and the shovel base 11 is set one-to-one with the slider 7.

[0062] like Figure 3 and Figure 7As shown, the slider 7 includes a sliding base 71 and an adapter block 72. The sliding base 71 is slidably connected to the lower mold assembly 2. The adapter block 72 is located on the side of the sliding base 71 near the lower mold core 3, and the shape of the adapter block 72 is adapted to a portion of the outer wall surface of the MIM product 9. Specifically, the adapter block 72 and the sliding base 71 are connected by screws. In other embodiments, a snap-fit ​​or threaded engagement between the adapter block 72 and the sliding base 71 is also feasible.

[0063] like Figure 5 As shown, the lower mold assembly 2 is provided with a slide groove 23, and the sliding seat 71 of the slider 7 slides and engages with the slide groove 23. The end of the slide groove 23 away from the lower mold core 3 is connected to the outer surface of the lower mold assembly 2. A limiting member 24 is provided in the slide groove 23 to limit the movement stroke of the slider 7. Specifically, the limiting member 24 is a screw, and a threaded hole that mates with the limiting member 24 is opened at the bottom of the slide groove 23.

[0064] like Figure 7 As shown, a third elastic element 73 is provided on the side of the slider 7 near the lower mold core 3. The elastic force applied by the third elastic element 73 to the slider 7 will drive the slider 7 to tend to move away from the lower mold core 3. Specifically, the third elastic element 73 is a spring, and the sliding seat 71 of the slider 7 has a receiving hole on the side near the lower mold core 3, with at least a portion of the third elastic element 73 disposed in the receiving hole. In other embodiments, the third elastic element 73 may be a spring sheet or a spring pad.

[0065] The working principle of the MIM product inner support shaping device disclosed in Embodiment 1 of this utility model is briefly described as follows: When the upper mold assembly 1 and the lower mold assembly 2 are separated, the inclined ejector 4 moves towards the upper mold assembly 1 to the limit position under the action of the first elastic member 41, the ejector pin 5 moves towards the upper mold assembly 1 to the limit position under the action of the second elastic member 51, and the slider 7 moves away from the lower mold core 3 to the contact limiting member 24 under the action of the third elastic member 73. When shaping the MIM product 9 is required, the MIM product 9 to be shaped is inverted onto the lower mold core 3, and the conforming pin 6 passes through the hole-like structure of the MIM product 9. At this time, the end of the inclined ejector 4 is located inside the MIM product 9, and the ejector pin 5 abuts against the MIM product 9. The upper mold assembly 1 and the lower mold assembly 2 are then closed. During the mold closing process, the upper mold assembly 1 applies a pushing force to the inclined ejector 4 through the MIM product 9, causing the inclined ejector 4 to overcome the elastic force of the first elastic element 41 and move away from the upper mold assembly 1. The side of the inclined ejector 4 gradually approaches the inner edge of the MIM product 9, and the upper mold assembly 1... The ejector pin 5 is pushed by the MIM product 9, causing the ejector pin 5 to overcome the elastic force of the second elastic element 51 and move away from the upper mold assembly 1. The shovel base 11 of the upper mold assembly 1 drives the slider 7 to overcome the elastic force of the third elastic element 73 and slide closer to the lower mold core 3. When the upper mold assembly 1 and the lower mold assembly 2 are fully closed, the side of the inclined ejector 4 presses the inner buckle of the MIM product 9 from the inside out to achieve shaping. The ejector pin 5 is flush with the side of the lower mold core 3 that is close to the upper mold assembly 1. The adapter blocks 72 of the multiple sliders 7 abut against the outer wall surface of the MIM product 9 to prevent the MIM product 9 from breaking. After the shaping is completed, the mold is opened. When the mold is opened, the slider 7 moves away from the lower mold core 3 under the action of the third elastic element 73, the adapter block 72 separates from the MIM product 9, and the angled ejector 4 moves towards the upper mold assembly 1 under the action of the first elastic element 41. The angled ejector 4 has an movable gap relative to the lower mold core 3 so that the side of the angled ejector 4 can be separated from the inner snap of the MIM product 9. The end of the angled ejector 4 near the upper mold assembly 1 pushes the MIM product 9 towards the upper mold assembly 1. The ejector pin 5 pushes the MIM product 9 towards the upper mold assembly 1 under the action of the second elastic element 51, so as to facilitate the removal of the MIM product 9.

[0066] In summary, when the MIM product internal support shaping device provided by this utility model opens the mold, the elastic force of the first elastic element drives the inclined ejector to move towards the direction of the upper mold assembly. The inclined ejector pushes the MIM product, causing the MIM product to move away from the lower mold core, making it easier to remove the MIM product.

[0067] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A MIM product internal support shaping device, characterized in that, It includes an upper mold assembly, a lower mold assembly, and a lower mold core, a slanted ejector, and a first elastic element disposed on the lower mold assembly; the slanted ejector penetrates the lower mold core; one end of the slanted ejector near the upper mold assembly is inclined to one side, and the other side is adapted to the inner wall surface of the MIM product; the first elastic element is used to drive the slanted ejector to move towards the upper mold assembly.

2. The MIM product internal support shaping device according to claim 1, characterized in that, The lower mold assembly is also provided with an ejector pin and a second elastic element. The ejector pin passes through the lower mold core, and the second elastic element is used to drive the ejector pin to move toward the upper mold assembly.

3. The MIM product internal support shaping device according to claim 1, characterized in that, The upper mold assembly is provided with a contour insert, which protrudes from the side of the upper mold assembly near the lower mold assembly and is adapted to the shape of a portion of the outer wall surface of the MIM product.

4. The MIM product internal support shaping device according to claim 1, characterized in that, The lower mold assembly is also provided with a limiting block, and the inclined top is provided with a slot. The limiting block is inserted into the slot to limit the movement stroke of the inclined top.

5. The MIM product internal support shaping device according to claim 1, characterized in that, The lower mold assembly is also provided with a contour pin, which penetrates the lower mold core and the end of the contour pin protrudes from the side of the lower mold core near the upper mold assembly.

6. The MIM product internal support shaping device according to claim 1, characterized in that, The lower mold assembly is provided with at least one slider, which is slidable relative to the lower mold assembly to move closer to or further away from the lower mold core. The side of the slider that is close to the lower mold core is adapted to a portion of the outer wall surface of the MIM article. The upper mold assembly is provided with a shovel base for driving the slider.

7. The MIM product internal support shaping device according to claim 6, characterized in that, The lower mold assembly is provided with a sliding groove, and the slider slides in cooperation with the sliding groove.

8. The MIM product internal support shaping device according to claim 7, characterized in that, The end of the slide groove away from the lower mold core is connected to the outer side of the lower mold assembly. A limiting member is provided in the slide groove to limit the movement stroke of the slider.

9. The MIM product internal support shaping device according to claim 6, characterized in that, The slider includes a sliding seat and an adapter block. The sliding seat is slidably connected to the lower mold assembly. The adapter block is located on the side of the sliding seat near the lower mold core. The adapter block is adapted to the shape of a portion of the outer wall surface of the MIM product.

10. The MIM product internal support shaping device according to claim 6, characterized in that, The slider is provided with a third elastic element on the side near the lower mold core.

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