Upper mold ejecting mechanism of anti-sticking mold

Abstract

The utility model discloses an anti-mold-sticking upper mold ejecting mechanism, and relates to the technical field of metal powder compression molding, the anti-mold-sticking upper mold ejecting mechanism comprises a mounting plate, a middle mold material plate and a lower mold body, the mounting plate can slide in the direction close to or away from the middle mold material plate, and the middle mold material plate can slide in the direction close to or away from the mounting plate; the side, close to the middle mold material plate, of the mounting plate is slidably connected with a push plate, an elastic piece is connected between the mounting plate and the push plate, the two ends of the elastic piece abut against the mounting plate and the push plate respectively, the side, close to the middle mold material plate, of the mounting plate is connected with an upper mold body, and the push plate is provided with a through hole allowing the upper mold body to penetrate through. And the middle die material plate is provided with a cavity for clamping the upper die body and the lower die body. The mounting plate slides in the direction away from the middle mold material plate, the elastic piece elastically resets, the elastic piece forces the push plate to slide in the direction close to the product, the push plate abuts against the product and drives the product to slide in the direction away from the upper mold body, the product is made to be separated from the upper mold body, and convenience is achieved.

Description

Technical Field

[0001] This application relates to the technical field of metal powder compression molding, and in particular to an upper mold ejection mechanism for an anti-sticking mold. Background Technology

[0002] In the field of metal powder molding, when pressing large-surface-area, lightweight products, the products tend to adhere to the upper mold, leading to repeated pressing during the pressing process. During repeated pressing, the mold is subjected to pressure exceeding design standards and uneven stress, ultimately damaging the mold. Traditional solutions typically involve electrical discharge treatment of the upper mold to disrupt the tight molecular contact between the product and the mold. As the upper mold surface becomes rougher, the actual contact area between the product and the mold is significantly reduced, thus decreasing the adsorption force and lowering the probability of product adhesion. The main drawback of existing technology is that in actual production, the upper mold operates in a high-frequency, high-intensity environment. Each time a product is pressed, the upper mold surface rubs and collides with the product. Over time, the microscopic uneven structure formed by the electrical discharge treatment gradually wears down. This wear may originate from the scraping of the upper mold by particles on the product surface or from the deformation of the upper mold surface caused by pressure during the pressing process. Once the surface roughness of the upper mold decreases to a certain level due to wear, the adsorption force between the product and the mold quickly rebounds, causing the product adhesion problem to reappear. To maintain the anti-adhesion properties of the upper mold body, frequent disassembly and assembly of the mold are required, and the upper mold body needs to be sent to specialized equipment for secondary or multiple electrical discharge treatments. This process necessitates frequent disassembly and assembly by personnel, impacting production schedules, reducing production efficiency, and increasing labor costs. This hinders the smooth progress of the company's production plans and puts it at a disadvantage in market competition, necessitating innovative solutions to overcome this technical bottleneck. Utility Model Content

[0003] The purpose of this application is to provide an upper mold ejection mechanism for preventing sticking, so as to facilitate the removal of low-weight, large-surface-area products from the upper mold body.

[0004] The upper mold ejection mechanism for anti-sticking mold provided in this application adopts the following technical solution: it includes a mounting plate, a middle mold plate, and a lower mold body. The mounting plate can slide towards or away from the middle mold plate, and the middle mold plate can slide towards or away from the mounting plate. A push plate is slidably connected to the side of the mounting plate near the middle mold plate. An elastic element is connected between the mounting plate and the push plate. The two ends of the elastic element abut against the mounting plate and the push plate, respectively. An upper mold body is connected to the side of the mounting plate near the middle mold plate. The push plate is provided with a through hole for the upper mold body to pass through. The middle mold plate is provided with a cavity for the upper mold body and the lower mold body to be engaged.

[0005] By adopting the above technical solution, metal powder is filled into the cavity, the mounting plate slides towards the middle mold plate, the push plate abuts against the middle mold plate, and the upper mold body passes through the through hole and extends into the cavity. The upper mold body and metal powder are pressed together to produce the product. The middle mold plate moves away from the mounting plate, and the product detaches from the cavity. The product expands and adheres to the upper mold body. The mounting plate slides away from the middle mold plate, the elastic element elastically resets, and the elastic element forces the push plate to slide towards the product. The push plate abuts against the product and drives the product to slide away from the upper mold body, making the product detach from the upper mold body, which is relatively convenient. The overall solution does not require electrical discharge treatment of the upper mold body, reducing maintenance costs, reducing production downtime, and improving production efficiency.

[0006] Optionally, the push plate is provided with a guide post, the mounting plate is provided with a guide hole for sliding cooperation with the guide post, the guide post is provided with a limiting boss, the radius of the limiting boss is larger than the radius of the guide post, and the mounting plate is provided with a limiting groove for sliding cooperation with the limiting boss, the limiting groove communicating with the guide hole.

[0007] By adopting the above technical solution, when the push plate slides, the sliding engagement between the guide post and the guide hole guides and limits the sliding of the push plate, thereby improving the stability of the push plate's sliding. The sliding engagement between the limiting boss and the limiting groove prevents the guide post from detaching from the mounting plate during the sliding process.

[0008] Optionally, the guide post and the push plate are connected by a first locking member.

[0009] By adopting the above technical solution, this design makes the installation and replacement of the guide post more convenient, requiring no complicated tools or operating procedures, and effectively improving maintenance efficiency. When installing the guide post, the end of the guide post away from the limiting boss passes through the limiting groove and guide hole in sequence, and the guide post is then connected to the push plate via the first locking element.

[0010] Optionally, both the mounting plate and the push plate have grooves on opposite sides for the elastic element to engage.

[0011] By adopting the above technical solution, the elastic element can be effectively prevented from shifting or falling off during compression or tension, thus ensuring that the elastic element is always in the correct working position. This not only improves the stability of the mechanism but also extends the service life of the elastic element, further reducing maintenance frequency and costs.

[0012] Optionally, the upper mold body includes an upper mold base connected to the mounting plate and a stamping part disposed on the upper mold base. The stamping part can pass through the through hole and enter the cavity, and the upper mold base can abut against the push plate.

[0013] By adopting the above technical solution, the upper mold base can abut against the push plate, which not only limits the movement range of the push plate to ensure that the elastic element remains stable during compression and reset, but also limits the movement range of the stamping part to prevent the stamping part from over-stamping the product.

[0014] Optionally, a connecting post is connected to the side of the upper die base away from the stamping part. The radius of the connecting post is larger than the radius of the upper die base. An upper die cover is detachably connected to the mounting plate. The upper die cover is connected to the mounting plate through a second locking member. The upper die cover is provided with a mounting groove for the connecting post to be inserted and a connecting hole for the upper die base to pass through. The connecting hole communicates with the mounting groove.

[0015] By adopting the above technical solution, the upper mold base is connected to the mounting plate through the second locking component, making the upper mold base detachable and facilitating the replacement and maintenance of the upper mold body. The radius of the connecting column is larger than the radius of the upper mold base, which effectively prevents the upper mold body from falling off the mounting block and improves the stability of the structure.

[0016] Optionally, the connecting column is connected to the upper mold base via a third locking member.

[0017] By adopting the above technical solution, the connecting column and the upper mold base are connected by the third locking component, which makes the assembly of the upper mold body more convenient, improves the connection reliability between the various parts of the upper mold body, and facilitates the replacement of the upper mold body.

[0018] Optionally, it also includes a limiting post, the mounting plate is connected to an upper mold frame, the middle mold plate is connected to a lower mold frame, and both the upper mold frame and the lower mold frame slide in cooperation with the limiting post.

[0019] By adopting the above technical solution, the sliding cooperation between the upper mold frame and the limiting post guides and limits the sliding of the mounting plate, thereby improving the stability of the sliding of the mounting plate; the sliding cooperation between the lower mold frame and the limiting post guides and limits the sliding of the middle mold plate, thereby improving the stability of the sliding of the middle mold plate.

[0020] In summary, this application includes at least one of the following beneficial technical effects:

[0021] 1. The mounting plate slides towards the middle mold plate, the push plate abuts against the product, the elastic element is compressed and undergoes elastic deformation and maintains a tendency to elastically return to its original position; the upper mold body passes through the through hole and extends into the cavity, thereby realizing the stamping of the product, and the product adheres to the upper mold body. The mounting plate slides away from the middle mold plate, the elastic element elastically returns to its original position, the elastic element forces the push plate to slide towards the product, the push plate abuts against the product and drives the product to slide away from the upper mold body, so that the product detaches from the upper mold body and avoids the product sticking to the upper mold body.

[0022] 2. The upper die base abuts against the push plate, limiting the push plate's movement range to ensure the elastic element remains stable during compression and reset; it also limits the movement range of the stamping section to prevent over-stamping of the product. 3. The upper die base is connected to the upper die frame via a mounting plate. The mounting plate is equipped with elastic elements, eliminating the need for modifications to the die frame and effectively reducing construction difficulty and processing costs. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0024] Figure 2 This is one of the cross-sectional views of an embodiment of this application, showing the guide post.

[0025] Figure 3 yes Figure 2 An enlarged view of region A.

[0026] Figure 4 This is a schematic diagram of the overall structure of the lower mold frame in its original state according to an embodiment of this application.

[0027] Figure 5 yes Figure 4 A sectional view.

[0028] Figure 6 yes Figure 5 A magnified view of region B.

[0029] Figure 7 yes Figure 5 A magnified view of region C.

[0030] Figure 8 This is a second cross-sectional view of an embodiment of this application, showing the upper mold body.

[0031] Figure 9 This is a partial structural schematic diagram of an embodiment of this application.

[0032] Figure 10 yes Figure 9 Exploded view.

[0033] Explanation of reference numerals in the attached drawings: 1. Lower mold base; 11. Guide rail; 2. Upper mold base; 21. Sleeve; 211. Limiting hole; 3. Mounting plate; 31. Guide hole; 32. Limiting groove; 33. Upper stamping cover; 331. Mounting groove; 332. Connecting hole; 4. Push plate; 41. Guide post; 411. Limiting boss; 42. Groove; 43. Through hole; 5. Elastic element; 6. Middle mold plate; 61. Cavity; 7. Upper mold body; 71. Upper mold base; 72. Stamping part; 73. Connecting post; 8. Lower mold body. Detailed Implementation

[0034] The following is in conjunction with the appendix Figure 1-Appendix Figure 7 This application will be described in further detail.

[0035] This application discloses an upper mold ejection mechanism for an anti-sticking mold.

[0036] like Figure 1 As shown, the system includes a lower mold base 1, an upper mold base 2, and four limiting posts 11. The lower mold base 1 and the upper mold base 2 are arranged opposite to each other, and the lower mold base 1 slides with the four limiting posts 11. The upper mold base 2 is detachably connected to four sleeves 21, which are bolted to the upper mold base 2. Each sleeve 21 corresponds to one of the limiting posts 11, and each sleeve 21 has a limiting hole 211 for sliding with the limiting posts 11. The upper mold base 2 and the lower mold base 1 can slide using hydraulic cylinders.

[0037] Combination Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, an mounting plate 3 is detachably connected to the side of the upper mold frame 2 near the lower mold frame 1, and the mounting plate 3 is connected to the upper mold frame 2 by bolts. A push plate 4 is slidably connected to the side of the mounting plate 3 near the middle mold plate 6. Four guide posts 41 are detachably connected to the side of the push plate 4 near the mounting plate 3. Each guide post 41 is connected to the push plate 4 by a first locking member (not shown in the attached figure), which is a bolt. The mounting plate 3 has guide holes 31 for sliding cooperation with the corresponding guide posts 41 (the number of guide holes 31 is selected according to the number of guide posts 41). Each guide post 41 has a limiting boss 411 at the end away from the push plate 4. The limiting boss 411 is integrally formed with the guide post 41, and the radius of the limiting boss 411 is larger than the radius of the guide post 41. A limiting groove 32 is provided on the side of the mounting plate 3 away from the push plate 4 for the limiting boss 411 to engage with. The limiting groove 32 communicates with the guide hole 31. Two elastic elements 5 are installed between the push plate 4 and the mounting plate 3. The elastic elements 5 are springs. The two elastic elements 5 are arranged opposite each other. The push plate 4 and the mounting plate 3 have grooves 42 for one end of the elastic element 5 to be inserted.

[0038] Combination Figure 5 and Figure 7 As shown, a middle mold plate 6 is fixedly connected to the side of the lower mold frame 1 near the upper mold frame 2. The middle mold plate 6 has a cavity 61. A lower mold body 8 is connected to the lower part of the middle mold plate 6. Part of the lower mold body 8 is located inside the cavity 61.

[0039] Combination Figure 8 , Figure 9 and Figure 10As shown, an upper mold cover 33 is detachably connected to the side of the mounting plate 3 near the push plate 4. The upper mold cover 33 is connected to the mounting plate 3 by several second locking elements (not shown in the attached figure), which are bolts. An upper mold body 7 is mounted on the upper mold cover 33. The upper mold body 7 includes an upper mold base 71 and a stamping part 72 disposed at one end of the upper mold base 71. The upper mold base 71 and the stamping part 72 are integrally formed. The area of ​​the upper mold base 71 away from the mounting plate 3 is larger than the area of ​​the stamping part 72 away from the mounting plate 3. The push plate 4 has a through hole 43 for the stamping part 72 to pass through, but the upper mold base 71 cannot pass through the through hole 43. The stamping part 72 can be inserted into the cavity 61 and abut against the lower mold body 8, so that the metal powder is pressed and formed. A connecting post 73 is detachably connected to the side of the upper die base 71 away from the stamping part 72. The connecting post 73 is connected to the upper die base 71 by several third locking elements (not shown in the attached figure). The third locking elements are bolts. The radius of the connecting post 73 is larger than the radius of the upper die base 71. The upper stamping cover 33 has a mounting groove 331 for the connecting post 73 to be inserted and a connecting hole 332 for the upper die base 71 to pass through. The connecting hole 332 communicates with the mounting groove 331.

[0040] The implementation principle of the upper mold ejection mechanism for the anti-sticking mold in this application embodiment is as follows:

[0041] When the mounting plate 3 slides towards the middle mold plate 6, the push plate 4 abuts against the middle mold plate 6, and the elastic element 5 is compressed, causing elastic deformation and maintaining a tendency to elastically return to its original position. The stamping part 72 passes through the through hole 43 and extends into the cavity 61, abutting against the metal powder filled in the cavity 61, thereby realizing the stamping of the product. The product adheres to the stamping part 72 due to close contact. When the mounting plate 3 slides away from the middle mold plate 6, the elastic element 5 elastically returns to its original position, and the elastic element 5 forces the push plate 4 to slide towards the product. The push plate 4 abuts against the product and drives the product to slide away from the stamping part 72, making it easier for the product to detach from the stamping part 72.

[0042] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A mold ejection mechanism for preventing sticking, characterized in that: The assembly includes a mounting plate (3), a middle mold plate (6), and a lower mold body (8). The mounting plate (3) can slide towards or away from the middle mold plate (6). The middle mold plate (6) can slide towards or away from the mounting plate (3). A push plate (4) is slidably connected to the side of the mounting plate (3) near the middle mold plate (6). An elastic element (5) is connected between the mounting plate (3) and the push plate (4). The two ends of the elastic element (5) abut against the mounting plate (3) and the push plate (4) respectively. An upper mold body (7) is connected to the side of the mounting plate (3) near the middle mold plate (6). The push plate (4) is provided with a through hole (43) for the upper mold body (7) to pass through. The middle mold plate (6) is provided with a cavity (61) for the upper mold body (7) and the lower mold body (8) to be inserted.

2. The upper mold ejection mechanism for the anti-sticking mold according to claim 1, characterized in that: The push plate (4) is provided with a guide post (41), and the mounting plate (3) is provided with a guide hole (31) for sliding cooperation with the guide post (41). The guide post (41) is provided with a limiting boss (411), the radius of the limiting boss (411) is larger than the radius of the guide post (41), and the mounting plate (3) is provided with a limiting groove (32) for sliding cooperation with the limiting boss (411). The limiting groove (32) is connected to the guide hole (31).

3. The upper mold ejection mechanism for the anti-sticking mold according to claim 2, characterized in that: The guide post (41) and the push plate (4) are connected by a first locking member.

4. The upper mold ejection mechanism for the anti-sticking mold according to claim 1, characterized in that: The mounting plate (3) and the push plate (4) are both provided with grooves (42) on opposite sides for the elastic element (5) to be inserted.

5. The upper mold ejection mechanism for the anti-sticking mold according to claim 1, characterized in that: The upper mold body (7) includes an upper mold base (71) connected to the mounting plate (3) and a stamping part (72) disposed on the upper mold base (71). The stamping part (72) can pass through the through hole (43) and enter the cavity (61). The upper mold base (71) can abut against the push plate (4).

6. The upper mold ejection mechanism for the anti-sticking mold according to claim 5, characterized in that: The upper die base (71) is connected to a connecting post (73) on the side away from the stamping part (72). The radius of the connecting post (73) is larger than that of the upper die base (71). The mounting plate (3) is detachably connected to an upper die cover (33). The upper die cover (33) is connected to the mounting plate (3) through a second locking member. The upper die cover (33) is provided with a mounting groove (331) for the connecting post (73) to be inserted and a connecting hole (332) for the upper die base (71) to pass through. The connecting hole (332) communicates with the mounting groove (331).

7. The upper mold ejection mechanism for the anti-sticking mold according to claim 6, characterized in that: The connecting column (73) is connected to the upper mold base (71) via a third locking member.

8. The upper mold ejection mechanism for the anti-sticking mold according to claim 1, characterized in that: It also includes a limiting post (11), the mounting plate (3) is connected to an upper mold frame (2), the middle mold plate (6) is connected to a lower mold frame (1), and the upper mold frame (2) and the lower mold frame (1) are both slidably engaged with the limiting post (11).

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