Mold convenient for stable demolding

Abstract

The mold comprises an upper mold body and a lower mold body, the lower mold body is provided with a forming groove, the forming groove is located in the side, facing the upper mold body, of the lower mold body, the upper mold body covers the forming groove to form a forming cavity, the lower mold body is provided with a pre-demolding groove, and the groove wall of the pre-demolding groove is provided with a separation block in a sliding mode; the sliding direction of the separation block is the direction close to the upper die, the lower die is provided with a control piece, the control piece is connected with the separation block, and the control piece controls the separation block to slide. The pre-release groove and the separation block are arranged, when the mold product needs to be released, the control piece controls the separation block to slide, so that the separation block is separated from the mold product, the contact area between the mold product and the groove wall of the forming groove is reduced, and the situation that the mold product is adhered to the groove wall of the forming groove is reduced; and the situation that the surface of a mold product is damaged due to adhesion with the groove wall of the forming groove due to single-time demolding is reduced, and defective products are reduced.

Description

Technical Field

[0001] The present application relates to the field of molds, and in particular to a mold that is easy to demould stably. Background Art

[0002] Molds are molding tools used for mass production of products in industrial production. They process materials into parts of specific shapes and sizes through changes in physical state (such as injection molding, stamping, etc.). They are known as the "mother of industry" and are widely used in the fields of automobiles, electronics, home appliances, etc.

[0003] Referring to the Chinese utility model patent with patent number CN217916307U, a plastic mold with a cooling structure is disclosed, including a plastic mold, an axle rod is arranged inside the plastic mold, cooler interfaces are symmetrically fixed on both sides of the plastic mold, protective covers are sleeved on the ends of the cooler interfaces on both sides of the plastic mold, operating grooves are symmetrically opened on the surface of the protective cover, limiting grooves are symmetrically opened on the surface of the cooler interface, built-in grooves are symmetrically opened on the inner wall of the protective cover, a limiting block is opened on the inner wall of the built-in groove, the limiting block is engaged with the limiting groove, a built-in spring is connected between the limiting block and the built-in groove, and guide grooves are symmetrically opened on the surface of the limiting block.

[0004] In actual use, when the mold product is ejected from the mold after molding with this type of mold, there is a situation where the mold product sticks to the inner wall of the mold. This situation forces the mold product to be separated from the mold, and there is a situation where the surface of the mold product is damaged, which needs to be improved. Summary of the invention

[0005] In order to reduce the damage caused to the surface of the mold product when demolding, the present application provides a mold that is easy to demold stably.

[0006] The present application provides a mold that is easy to demould stably, using the following technical solution:

[0007] A mold that is easy to demold stably comprises an upper mold and a lower mold, wherein the lower mold is provided with a molding groove, the molding groove is located on the side of the lower mold facing the upper mold, the upper mold cover is combined with the molding groove to form a molding cavity, the lower mold is provided with a pre-demolding groove, the pre-demolding groove wall is slidably provided with a separation block, the sliding direction of the separation block is the direction close to the upper mold, the lower mold is provided with a control component, the control component is connected to the separation block, and the control component controls the sliding of the separation block.

[0008] By adopting the above technical solution, a pre-removal groove and a separation block are provided. When the mold is formed, the end face of the separation block is flush with the bottom end face of the forming groove. When it is necessary to remove the mold product, the separation block is controlled to slide by a control member, so that the separation block is separated from the mold product, reducing the contact area between the mold product and the wall of the forming groove, and reducing the adhesion between the mold product and the wall of the forming groove. By demolding in batches, the situation that the surface of the mold product is damaged due to adhesion to the wall of the forming groove during single demolding is reduced, and the generation of defective products is reduced.

[0009] Optionally, the lower mold is provided with an installation cavity, the pre-removal groove communicates with the installation cavity, the control member includes a control screw and a connecting portion, the lower mold is provided with a control hole, the control hole communicates with the installation cavity, the control screw passes through the control hole, the control screw is rotatably connected to the wall of the installation cavity, the rotation axis of the control screw is parallel to the sliding direction of the separation block, and the upper mold is provided with a threaded hole corresponding to the control screw; the connecting portion is threadedly connected to the control screw, and the connecting portion is connected to the separation block. When the control screw rotates, the connecting portion moves in a direction close to or away from the upper mold.

[0010] By adopting the above technical solution, a control screw is provided. When the upper mold moves and the control screw is still embedded in the threaded hole at this time, the rotation of the control screw drives the connecting portion to move, so that the separation block is separated from the mold product. In this way, there is no need to provide an additional power source, making the overall use more convenient; secondly, the control screw is also used for auxiliary guiding, reducing the misalignment between the upper mold and the lower mold, and making the use of the mold more stable.

[0011] Optionally, the control screw includes a first control rod, a buffer rod and a second control rod. The buffer rod is located between the first control rod and the second control rod. The first control rod is used to be embedded in the threaded hole. Both the first control rod and the second control rod are provided with threads, and the buffer rod is not provided with threads. A buffer spring is provided on the wall of the installation cavity. The buffer spring is sleeved on the outer wall of the second control rod, and the buffer spring is connected to the connecting portion. The elastic force of the buffer spring restricts the connecting portion from moving away from the first control rod; when the upper mold moves in a direction close to the lower mold, the control screw is embedded in the threaded hole. At this time, the rotation of the control screw does not cause the connecting portion to move to the second control rod; when the upper mold moves in a direction away from the lower mold, the control screw rotates, the separation block moves in a direction away from the upper mold, and is separated from the mold product; when the control screw disengages from the threaded hole, the elastic force of the buffer spring causes the connecting portion to move towards the initial position.

[0012] By adopting the above technical solution, a buffer spring is provided. When the upper die moves away from the lower die and the control screw is inserted into the threaded hole, the control screw rotates and the connecting portion moves away from the forming groove. At this time, the buffer spring is in a compressed state. When the upper die moves to the position where the control screw disengages from the threaded hole, the elastic force of the buffer spring causes the connecting portion to move to near the initial position, thus facilitating the position recovery of the separating block.

[0013] Optionally, an extension groove is provided on the wall of the pre-release groove, and an air pressure balance hole is provided on the wall of the extension groove for communicating with the outside.

[0014] By adopting the above technical solution, the extension groove and the air pressure balance hole are provided. When the separating block moves away from the mold product, the extension groove communicates with the pre-release groove. When the separating block moves back towards the mold product, the gas in the pre-release groove is discharged together, thereby achieving the effect of assisting in demolding.

[0015] Optionally, a guide rod is provided on the wall of the installation cavity. The connecting portion slides on the guide rod, and the sliding direction of the connecting portion is towards the upper die. The separating block is located on the side of the connecting portion close to the upper die.

[0016] By adopting the above technical solution, the guide rod is provided. The guide rod is used to guide the sliding of the connecting portion and reduce the rotation of the connecting portion.

[0017] Optionally, a return spring is provided on the wall of the installation cavity. The return spring is sleeved on the outer wall of the guide rod, and the return spring connects the connecting portion. The elastic force of the return spring restricts the connecting portion from moving away from the upper die.

[0018] By adopting the above technical solution, the return spring is provided. The elastic force of the return spring restricts the connecting portion from moving away from the upper die, which is convenient for cooperating with the buffer spring to make the connecting portion return to the initial position.

[0019] In summary, the present application includes at least one of the following beneficial technical effects:

[0020] 1. The pre-release groove and the separating block are provided. When the mold is being formed, the end face of the separating block is flush with the bottom end face of the forming groove. When the mold product needs to be removed, the separating block is controlled to slide through the control member, so that the separating block is separated from the mold product, reducing the contact area between the mold product and the wall of the forming groove, reducing the adhesion between the mold product and the wall of the forming groove, and reducing the damage to the surface of the mold product caused by adhesion to the wall of the forming groove during a single demolding of the mold product through staged demolding, and reducing the generation of defective products.

[0021] 2. A buffer spring is provided. When the upper die moves away from the lower die and the control screw is inserted into the threaded hole, the control screw rotates and the connecting part moves away from the forming groove. At this time, the buffer spring is in a compressed state. When the upper die moves to the position where the control screw disengages from the threaded hole, the elastic force of the buffer spring causes the connecting part to move to near the initial position, thus facilitating the position recovery of the separating block.

[0022] 3. An extension groove and an air pressure balance hole are provided. When the separating block moves away from the mold product, the extension groove communicates with the pre-release groove. When the separating block moves back towards the mold product, the gas in the pre-release groove is discharged together, thereby achieving the effect of assisting demolding. Description of the Drawings

[0023] Figure 1 is the overall schematic diagram of the embodiment.

[0024] Figure 2 is the cross-sectional schematic diagram of the embodiment.

[0025] Figure 3 is the partial cross-sectional schematic diagram of the embodiment, mainly showing the control part.

[0026] Figure 4 is Figure 3 the enlarged schematic diagram of A in

[0027] Description of the reference numerals: 1. Upper die; 2. Lower die; 3. Forming groove; 4. Forming cavity; 5. Pre-release groove; 6. Separating block; 7. Control part; 8. Installation cavity; 9. Control screw; 91. First control rod; 92. Buffer rod; 93. Second control rod; 10. Connecting part; 11. Control hole; 12. Threaded hole; 13. Buffer spring; 14. Guide rod; 15. Return spring; 16. Extension groove; 17. Air pressure balance hole. Detailed Embodiment

[0028] The following further describes the present application in detail with reference to the drawings.

[0029] The embodiment of the present application discloses a mold that facilitates stable demolding. Referring to Figure 1 , it includes an upper die 1 and a lower die 2. The lower die 2 is provided with a forming groove 3. The forming groove 3 is located on the side of the lower die 2 facing the upper die 1. The upper die 1 covers the forming groove 3 to form a forming cavity 4, and the forming cavity 4 is used for the forming of the mold product.

[0030] The lower die 2 is provided with a pre-release groove 5. A separating block 6 slides on the wall of the pre-release groove 5. The sliding direction of the separating block 6 is the direction of approaching or departing from the upper die 1. The lower die 2 is provided with a control part 7. The control part 7 is connected to the separating block 6, and the control part 7 is used to control the sliding of the separating block 6.

[0031] The lower die 2 is provided with an installation cavity 8. The pre-stripping groove 5 communicates with the installation cavity 8. The control member 7 includes a control screw 9 and a connecting portion 10. The lower die 2 is provided with a control hole 11, and the control hole 11 communicates with the installation cavity 8. The control screw 9 passes through the control hole 11, and the control screw 9 is rotatably connected to the wall of the installation cavity 8. The rotation axis of the control screw 9 is parallel to the sliding direction of the separating block 6. The upper die 1 is provided with a threaded hole 12, and the threaded hole 12 is located at one end of the upper die 1 close to the lower die 2. The threaded hole 12 corresponds to the control screw 9, and the threaded hole 12 is for the control screw 9 to be inserted into.

[0032] The control screw 9 includes a first control rod 91, a buffer rod 92 and a second control rod 93. The buffer rod 92 is located between the first control rod 91 and the second control rod 93. The first control rod 91 is located at one end of the buffer rod 92 away from the installation cavity 8, and the first control rod 91 protrudes from the surface of the lower die 2. The first control rod 91 is used to be inserted into the threaded hole 12. In this application, both the first control rod 91 and the second control rod 93 are provided with threads, and the buffer rod 92 is not provided with threads.

[0033] The wall of the installation cavity 8 is provided with a buffer spring 13. The buffer spring 13 is sleeved on the outer wall of the second control rod 93. The connecting portion 10 is threadedly connected to the control screw 9, and the connecting portion 10 is connected to the separating block 6. When the control screw 9 rotates, the connecting portion 10 moves in a direction close to or away from the upper die 1.

[0034] The buffer spring 13 is located on the side of the connecting portion 10 away from the first control rod 91. One end of the buffer spring 13 close to the first connecting rod is connected to the connecting portion 10. The elastic force of the buffer spring 13 restricts the connecting portion 10 from moving in a direction away from the first control rod 91. When the buffer spring 13 is in a normal state, the connecting portion 10 is located on the buffer rod 92.

[0035] The wall of the installation cavity 8 is provided with a guide rod 14. The connecting portion 10 slides on the guide rod 14. The sliding direction of the connecting portion 10 is in the direction close to the upper die 1. The connecting portion 10 is connected to the separating block 6, and the separating block 6 is located on the side of the connecting portion 10 close to the upper die 1.

[0036] The wall of the installation cavity 8 is provided with a return spring 15. The return spring 15 is sleeved on the outer wall of the guide rod 14. The return spring 15 is connected to the connecting portion 10. The elastic force of the return spring 15 restricts the connecting portion 10 from moving in a direction away from the upper die 1.

[0037] When the upper die 1 moves towards the lower die 2, the control screw 9 is inserted into the threaded hole 12. At this time, due to the rotation direction of the control screw 9, it is difficult to make the internal thread of the connecting part 10 match with the thread of the control screw 9, and the rotation of the control screw 9 does not cause the connecting part 10 to move to the second control rod 93. When the upper die 1 moves away from the lower die 2, at this time, the rotation direction of the control screw 9 makes the internal thread of the connecting part 10 match with the thread of the control screw 9. Therefore, the rotation of the control screw 9 drives the connecting part 10 to move away from the first control rod 91, and the separating block 6 moves away from the upper die 1 and separates from the mold product. At this time, the buffer spring 13 is in a compressed state. When the control screw 9 disengages from the threaded hole 12, the elastic force of the buffer spring 13 causes the connecting part 10 to move towards the initial position.

[0038] The wall of the pre-ejection groove 5 is provided with an extension groove 16, and the wall of the extension groove 16 is provided with an air pressure balance hole 17, and the air pressure balance hole 17 is used to communicate with the outside.

[0039] In other embodiments, two extension grooves 16 can be provided, and each extension groove 16 corresponds to an air pressure balance hole 17. The wall of the air pressure balance hole 17 corresponding to the upper extension groove 16 is provided with a one-way conduction member, and the one-way conduction member is used for allowing gas to enter from the outside and restricting the gas from being discharged from the air pressure balance hole 17 when the separating block 6 moves towards the forming groove 3.

[0040] The implementation principle of a mold for facilitating stable demolding in the embodiment of the present application is as follows: In actual use, when it is necessary to form a mold product, at this time, the upper die 1 is moved towards the lower die 2, the control screw 9 is inserted into the threaded hole 12 of the upper die 1, and as the upper die 1 moves, the control screw 9 rotates. At this time, since the buffer spring 13 makes the connecting part 10 located on the buffer rod 92, the rotation of the control screw 9 does not drive the buffer rod 92 to rotate.

[0041] When it is necessary to perform the ejection operation of the mold product, the upper die 1 is moved away from the lower die 2. At this time, the movement of the upper die 1 drives the control screw 9 to rotate, and the rotation of the control screw 9 makes the connecting part 10 move to the second control rod 93. At this time, the movement of the connecting part 10 drives the separating block 6 to move away from the mold product. When the control screw 9 disengages from the threaded hole 12, the separating block 6 moves to the side of the extension groove 16 away from the mold product.

[0042] Subsequently, since the control screw 9 loses the restriction of the threaded hole 12 of the upper die 1, the elastic forces of the buffer spring 13 and the return spring 15 cause the connecting part 10 to move towards the mold product. When the separating block 6 closes the extension groove 16, the continuous movement of the separating block 6 causes the gas in the pre-ejection groove 5 to move between the mold product and the bottom wall of the forming groove 3, facilitating the separation of the mold product from the bottom wall of the forming groove 3.

[0043] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A mold facilitating stable demolding, comprising an upper mold (1) and a lower mold (2). The lower mold (2) is provided with a forming groove (3), and the forming groove (3) is located on the side of the lower mold (2) facing the upper mold (1). The upper mold (1) covers the forming groove (3) to form a forming cavity (4), and it is characterized in that: The lower die (2) is provided with a pre - stripping groove (5). A separating block (6) slides on the wall of the pre - stripping groove (5). The sliding direction of the separating block (6) is towards the upper die (1). The lower die (2) is provided with a control member (7). The control member (7) is connected to the separating block (6), and the control member (7) controls the sliding of the separating block (6).

2. The mold for facilitating stable demolding according to claim 1, characterized in that: The lower die (2) is provided with an installation cavity (8). The pre - stripping groove (5) communicates with the installation cavity (8). The control member (7) includes a control screw (9) and a connecting portion (10). The lower die (2) is provided with a control hole (11). The control hole (11) communicates with the installation cavity (8). The control screw (9) passes through the control hole (11). The control screw (9) is rotatably connected to the wall of the installation cavity (8). The rotation axis of the control screw (9) is parallel to the sliding direction of the separating block (6). The upper die (1) is provided with a threaded hole (12), and the threaded hole (12) corresponds to the control screw (9). The connecting portion (10) is threadedly connected to the control screw (9). The connecting portion (10) is connected to the separating block (6). When the control screw (9) rotates, the connecting portion (10) moves in the direction close to or away from the upper die (1).

3. The mold for facilitating stable demolding according to claim 2, wherein: The control screw (9) includes a first control rod (91), a buffer rod (92) and a second control rod (93). The buffer rod (92) is located between the first control rod (91) and the second control rod (93). The first control rod (91) is used for being embedded in the threaded hole (12). Both the first control rod (91) and the second control rod (93) are provided with threads. The buffer rod (92) is not provided with threads. A buffer spring (13) is provided on the wall of the installation cavity (8). The buffer spring (13) is sleeved on the outer wall of the second control rod (93). The buffer spring (13) is connected to the connecting portion (10). The elastic force of the buffer spring (13) restricts the connecting portion (10) from moving in the direction away from the first control rod (91). When the upper die (1) moves towards the lower die (2), the control screw (9) is embedded in the threaded hole (12). At this time, the rotation of the control screw (9) does not cause the connecting portion (10) to move to the second control rod (93). When the upper die (1) moves away from the lower die (2), the control screw (9) rotates, and the separating block (6) moves in the direction away from the upper die (1) and separates from the mold product. When the control screw (9) disengages from the threaded hole (12), the elastic force of the buffer spring (13) causes the connecting portion (10) to move towards the initial position.

4. The mold for facilitating stable demolding according to claim 3, wherein: The wall of the pre - stripping groove (5) is provided with an extension groove (16). The wall of the extension groove (16) is provided with an air pressure balance hole (17). The air pressure balance hole (17) is used for communicating with the outside.

5. The mold for facilitating stable demolding according to claim 3, wherein: The wall of the installation cavity (8) is provided with a guide rod (14). The connecting portion (10) slides on the guide rod (14). The sliding direction of the connecting portion (10) is towards the upper die (1). The separating block (6) is located on the side of the connecting portion (10) close to the upper die (1).

6. The mold for facilitating stable demolding according to claim 5, wherein: The wall of the installation cavity (8) is provided with a return spring (15). The return spring (15) is sleeved on the outer wall of the guide rod (14). The return spring (15) is connected to the connecting part (10). The elastic force of the return spring (15) restricts the connecting part (10) from moving away from the upper die (1).

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