A demolding device for mold production

Abstract

This utility model relates to the technical field of demolding devices, providing a demolding device for mold production, including a base, a lower mold base fixed to the top of the base, a mold assembly fixed to the top of the outer side of the lower mold base, a mold loosening structure at the bottom of the lower mold base, a driving structure below the mold loosening structure, and a pneumatic demolding structure on one side of the bottom of the base. This utility model, by incorporating a pneumatic demolding structure, utilizes the instantaneous release of high-pressure airflow to push the product upwards from the mold cavity via a pusher plate. This avoids uneven external force causing mechanical contact between the pusher plate and the product during movement, protecting the surface integrity of the mold. Furthermore, the airflow can remove residual debris from the mold cavity, reducing the need for manual cleaning. This device achieves convenient and stable demolding, improving the working efficiency of the demolding device for mold production during use.

Description

Technical Field

[0001] This utility model relates to the field of demolding device technology, and in particular to a demolding device for mold production. Background Technology

[0002] Molds are core tools used in industrial production processes such as injection molding, stamping, and casting. Their demolding process directly affects product quality and production efficiency. Traditional demolding methods typically use ejector pins, push plates, or pneumatic lifting mechanisms. However, during the demolding process, friction can easily occur between the mold and the mold cavity wall, leading to damage to the product surface or the mold itself, reducing mold life, and increasing maintenance and replacement costs. Therefore, it is necessary to design a demolding device for mold production. To address this, patent CN219924360U discloses a demolding device for mold production, comprising a worktable, a lower mold, an upper mold, and a second hydraulic cylinder. The lower mold includes an L-shaped left mold, a front plate, an L-shaped right mold, and a rear plate. The second hydraulic cylinder is equipped with a second piston rod, and a top plate is provided on the top of the second piston rod, with the top plate located inside the lower mold. The second hydraulic cylinder is equipped with a moving mechanism, which includes four sets of moving components and rolling components. This invention, through its designed moving mechanism, allows the L-shaped left mold, front plate, L-shaped right mold, and rear plate on the lower mold to move outwards before the mold inside the lower mold is ejected by the top plate on the demolding device. This creates a certain gap between the outer surface of the mold and the inner wall of the lower mold. When the top plate pushes the mold upwards, it avoids friction and wear between the mold and the inner wall of the lower mold, improving the production quality of the mold and enhancing the effectiveness of the demolding device. Although the above-mentioned mold release device can avoid contact and friction between molds during use, the four sets of cylinders push the four side plates respectively during demolding, which is complex in structure and may not be synchronized enough, affecting the stability of demolding. Therefore, it is necessary to design a mold release device for mold production. Utility Model Content

[0003] The purpose of this utility model is to provide a demolding device for mold production, which solves the defects of existing demolding devices for mold production, where four sets of cylinders push four side plates respectively during demolding, resulting in a complex structure and potentially insufficient synchronization, which affects the stability of demolding.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a demolding device for mold production, including a base; A lower mold base is fixed to the top of the base, and a mold assembly is fixed to the top of the outer base of the lower mold base. The bottom of the lower mold base is provided with a mold loosening structure, and a driving structure is provided below the mold loosening structure; A pneumatic demolding structure is provided on one side of the bottom of the base. The pneumatic demolding structure includes a protective box located on one side of the bottom of the base. A filter plate is fixed inside the protective box on one side. An air inlet pipe is fixed on one side of the bottom of the protective box. An air compressor is fixedly installed inside the protective box on the side away from the air inlet pipe. The pneumatic demolding structure also includes air supply pipes that are evenly fixed on both sides of the bottom of the base.

[0005] Furthermore, the mold assembly includes a horizontal plate disposed above the lower mold base, guide rods passing through the corner positions inside the horizontal plate, a hydraulic rod fixed at the middle position of the top of the horizontal plate, and an upper mold base fixed at the middle position of the bottom of the horizontal plate.

[0006] Furthermore, the top end of the guide rod extends above the horizontal plate and is fixed with an anti-detachment plate, and the bottom end of the guide rod is fixedly connected to the top end of the base.

[0007] Furthermore, the mold release structure includes a push plate disposed at the bottom of the lower mold base, a push rod fixed at the middle position of the bottom end of the push plate, and guide shafts fixed at the corner positions of the bottom end of the push plate. The bottom end of the push rod passes through the lower mold base and extends to the bottom of the base and is fixed with a moving block. Ball bearings are evenly rolled on both sides of the moving block.

[0008] Furthermore, the bottom ends of the guide shafts all extend to the bottom of the base, and the balls are evenly distributed on one side of the moving block.

[0009] Furthermore, the drive structure includes a mounting frame fixed to the bottom of the base, mounting plates are fixed on the inner walls of both sides of the bottom of the mounting frame, movable blocks are provided on both sides above the mounting frame, a drive block is fixed to the top of each movable block, a limit shaft passes through the bottom of each movable block, and a lead screw is threaded to the top of each movable block. The drive structure also includes a servo motor fixed to the outer wall of one side of the mounting plate.

[0010] Furthermore, the drive blocks are symmetrically distributed on both sides of the upper mold base, and the side of the drive block closest to the upper mold base is inclined.

[0011] Furthermore, the threads at both ends of the lead screw are in opposite directions. One end of the lead screw extends to the outside of the mounting plate and is fixedly connected to the output end of the servo motor. The other end of the lead screw extends to the inside of the mounting plate and is rotatably connected to the mounting plate.

[0012] Furthermore, the end of each air supply pipe away from the base is fixedly connected to the output end of the air compressor via a pipe. The air supply pipes are symmetrically distributed on both sides of the base, and the top ends of each air supply pipe extend into the interior of the lower mold base and are located on the same horizontal plane as the inner wall of the bottom of the lower mold base.

[0013] The advantages of the demolding device for mold production provided by this utility model are as follows: By incorporating a pneumatic demolding structure, high-pressure airflow is released instantaneously, pushing the product upward from the mold cavity via a pusher plate. This avoids uneven external force causing mechanical contact between the pusher plate and the product during movement, protecting the surface integrity of the mold. Furthermore, the airflow can remove residual debris from the mold cavity, reducing the need for manual cleaning. This device achieves a stable demolding function and improves the working efficiency of the demolding device used in mold production. By incorporating a mold loosening structure, the push rod moves upward, causing the push plate to move upward as well. This facilitates the separation of the product from the lower mold base, reduces the tightness between the mold and the mold base, and makes subsequent demolding smoother. The guide shaft and ball bearings ensure that the push plate moves smoothly and avoids mold deformation caused by skewing. This device enables the product to be pre-loosened for easy subsequent demolding, improving the convenience and efficiency of the demolding device used in mold production. By incorporating a drive structure, the synchronous movement of the movable blocks and drive blocks on both sides is achieved through a symmetrically threaded lead screw and a servo motor, preventing jamming. The servo motor can precisely adjust the rotation angle of the lead screw to control the movement distance of the movable blocks and drive blocks, facilitating the extrusion of the movable blocks to different heights. This enables the device to stably eject the push plate upwards, improving the working efficiency of the demolding device used in mold production. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model; Figure 2 This is a schematic diagram of the overall three-dimensional structure of this utility model; Figure 3 This is a schematic diagram of the front cross-sectional structure of this utility model; Figure 4 This is a three-dimensional structural schematic diagram of the main cross-section of this utility model; Figure 5 This is a side view cross-sectional three-dimensional structural diagram of the present invention.

[0015] The following are the annotations in the diagram: 1. Base; 2. Lower mold base; 3. Mold assembly; 31. Guide rod; 32. Horizontal plate; 33. Hydraulic rod; 34. Upper mold base; 4. Mold release structure; 41. Push plate; 42. Push rod; 43. Guide shaft; 44. Moving block; 45. Ball bearing; 5. Drive structure; 51. Mounting base; 52. Moving block; 53. Limiting shaft; 54. Drive block; 55. Lead screw; 56. Mounting plate; 57. Servo motor; 6. Pneumatic demolding structure; 61. Protective box; 62. Air inlet pipe; 63. Filter plate; 64. Air compressor; 65. Air supply pipe. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figures 1-5 The present invention provides a demolding device for mold production, including a base 1.

[0018] Reference Figures 1-5 A lower mold base 2 is fixed to the top of the base 1. A mold assembly 3 is fixed to the top of the base 1 outside the lower mold base 2. The mold assembly 3 includes a horizontal plate 32 disposed above the lower mold base 2. Guide rods 31 pass through the corner positions inside the horizontal plate 32. A hydraulic rod 33 is fixed at the middle position of the top of the horizontal plate 32. An upper mold base 34 is fixed at the middle position of the bottom of the horizontal plate 32. The top of the guide rods 31 extends to the top of the horizontal plate 32 and is fixed with an anti-detachment plate. The bottom of the guide rods 31 is fixedly connected to the top of the base 1. The bottom of the lower mold base 2 is provided with a mold release structure 4. The mold release structure 4 includes a push plate 41 set at the bottom of the lower mold base 2. A push rod 42 is fixed at the middle position of the bottom end of the push plate 41. A guide shaft 43 is fixed at the corner position of the bottom end of the push plate 41. The bottom end of the push rod 42 passes through the lower mold base 2 and extends to the bottom of the base 1 and is fixed with a moving block 44. Roller balls 45 are evenly rolled on both sides of the moving block 44. The bottom ends of the guide shafts 43 all extend to the bottom of the base 1. The roller balls 45 are evenly distributed on one side of the moving block 44.

[0019] When the external power supply is connected and the hydraulic rod 33 is started, the hydraulic rod 33 will lift and lower the upper mold base 34 through the horizontal plate 32. Before demolding, the moving block 44 will drive the push rod 42 to move upward under the drive of the drive block 54. The push rod 42 will drive the push plate 41 to move upward. The guide shaft 43 and the base 1 are slidably connected to improve the stability of the push plate 41 during lifting and lowering. The ball bearings 45 roll on both sides of the moving block 44. The contact between the moving block 44 and the drive block 54 reduces the sliding resistance. Under the ejection action of the push plate 41, the mold is loosened and separated from the mold cavity wall, making the subsequent pneumatic demolding smoother.

[0020] Reference Figure 1 and Figures 3-5Below the loosening mold structure 4, a driving structure 5 is provided. The driving structure 5 includes a mounting base 51 fixed to the bottom of the base 1. Mounting plates 56 are fixed on the inner walls of both sides of the bottom of the mounting base 51. Movable blocks 52 are provided on both sides above the mounting base 51. A driving block 54 is fixed to the top of each movable block 52. A limit shaft 53 passes through the bottom of each movable block 52. A lead screw 55 is threaded to the top of each movable block 52. The driving structure 5 also includes a servo motor 57 fixed to the outer wall of one side of the mounting plate 56. The driving blocks 54 are symmetrically distributed on both sides of the upper mold base 34. The side of the driving blocks 54 closest to the upper mold base 34 is inclined. The threads at both ends of the lead screw 55 are opposite in direction. One end of the lead screw 55 extends to the outside of the mounting plate 56 and is fixedly connected to the output end of the servo motor 57. The other end of the lead screw 55 extends to the inside of the mounting plate 56 and is rotatably connected to the mounting plate 56.

[0021] When the external power supply is connected and the servo motor 57 is started, the rotation of the servo motor 57 will drive the lead screw 55 to rotate. Under the limiting action of the limiting shaft 53, when the lead screw 55 rotates, it will drive the movable block 52 to move closer or further away from each other on both sides of the lead screw 55, so that the two sets of driving blocks 54 simultaneously approach the moving block 44, pushing the moving block 44 upward, so as to provide upward power to the mold release structure 4.

[0022] Reference Figures 1-5 A pneumatic demolding structure 6 is provided on one side of the bottom of the base 1. The pneumatic demolding structure 6 includes a protective box 61 located on one side of the bottom of the base 1. A filter plate 63 is fixed inside the protective box 61 on one side. An air inlet pipe 62 is fixed inside the protective box 61 on one side of the bottom. An air compressor 64 is fixedly installed inside the protective box 61 on the side away from the air inlet pipe 62. The pneumatic demolding structure 6 also includes air supply pipes 65 evenly fixed on both sides of the bottom of the base 1. The ends of the air supply pipes 65 away from the base 1 are all fixedly connected to the output end of the air compressor 64 through pipes. The air supply pipes 65 are symmetrically distributed on both sides of the base 1. The top ends of the air supply pipes 65 extend into the interior of the lower mold base 2 and are located on the same horizontal plane as the inner wall of the bottom of the lower mold base 2.

[0023] When an external power source is connected and the air compressor 64 is started, the air compressor 64 can compress filtered outside air and deliver it to the bottom of the lower mold base 2 below the push plate 41 through the air supply pipe 65. Under the action of the gas ejection, the push plate 41 can be steadily moved upward, and the mold can be slowly ejected upward by the gas, reducing mechanical damage.

[0024] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A demolding device for mold production, comprising a base (1); Its features are: The bottom of the base (1) is fixed with a lower mold base (2), and the bottom of the base (1) outside the lower mold base (2) is fixed with a mold assembly (3). The bottom of the lower mold base (2) is provided with a mold loosening structure (4), and a driving structure (5) is provided below the mold loosening structure (4). A pneumatic demolding structure (6) is provided on one side of the bottom of the base (1). The pneumatic demolding structure (6) includes a protective box (61) provided on one side of the bottom of the base (1). A filter plate (63) is fixed on one side inside the protective box (61). An air inlet pipe (62) is fixed on one side of the bottom of the protective box (61). An air compressor (64) is fixedly installed on the side of the protective box (61) away from the air inlet pipe (62). The pneumatic demolding structure (6) also includes air supply pipes (65) evenly fixed on both sides of the bottom of the base (1).

2. The demolding device for mold production according to claim 1, characterized in that: The mold assembly (3) includes a horizontal plate (32) disposed above the lower mold base (2), and guide rods (31) are inserted through the corner positions inside the horizontal plate (32). A hydraulic rod (33) is fixed at the middle position of the top of the horizontal plate (32), and an upper mold base (34) is fixed at the middle position of the bottom of the horizontal plate (32).

3. The demolding device for mold production according to claim 2, characterized in that: The top end of the guide rod (31) extends above the horizontal plate (32) and is fixed with an anti-detachment plate. The bottom end of the guide rod (31) is fixedly connected to the top end of the base (1).

4. The demolding device for mold production according to claim 1, characterized in that: The loosening structure (4) includes a push plate (41) disposed at the bottom of the lower mold base (2). A push rod (42) is fixed at the middle position of the bottom end of the push plate (41). A guide shaft (43) is fixed at the corner position of the bottom end of the push plate (41). The bottom end of the push rod (42) extends through the lower mold base (2) to the bottom of the base (1) and is fixed with a moving block (44). Roller balls (45) are evenly connected to both sides of the moving block (44).

5. A demolding device for mold production according to claim 4, characterized in that: The bottom ends of the guide shafts (43) extend to the bottom of the base (1), and the balls (45) are evenly distributed on one side of the moving block (44).

6. A demolding device for mold production according to claim 1, characterized in that: The drive structure (5) includes a mounting base (51) fixed to the bottom of the base (1). Mounting plates (56) are fixed on the inner walls of both sides of the bottom of the mounting base (51). Movable blocks (52) are provided on both sides above the mounting base (51). A drive block (54) is fixed to the top of each movable block (52). A limit shaft (53) passes through the bottom of each movable block (52). A lead screw (55) is threaded to the top of each movable block (52). The drive structure (5) also includes a servo motor (57) fixed to the outer wall of one side of the mounting plate (56).

7. A demolding device for mold production according to claim 6, characterized in that: The drive blocks (54) are symmetrically distributed on both sides of the upper mold base (34), and the drive blocks (54) are inclined on the side closer to the upper mold base (34).

8. A demolding device for mold production according to claim 6, characterized in that: The threads at both ends of the lead screw (55) are opposite in direction. One end of the lead screw (55) extends to the outside of the mounting plate (56) and is fixedly connected to the output end of the servo motor (57). The other end of the lead screw (55) extends to the inside of the mounting plate (56) and is rotatably connected to the mounting plate (56).

9. A demolding device for mold production according to claim 1, characterized in that: The end of each air supply pipe (65) away from the base (1) is fixedly connected to the output end of the air compressor (64) through a pipe. The air supply pipes (65) are symmetrically distributed on both sides of the base (1). The top of each air supply pipe (65) extends into the interior of the lower mold base (2) and is located on the same horizontal plane as the inner wall of the bottom of the lower mold base (2).

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