A foam molding rapid demolding device

Abstract

This utility model belongs to the field of foam molding technology, specifically a foam molding rapid demolding device, including a base; a lower mold is provided at the center of the top of the base, a fixing frame is bolted to the top of the base, a hydraulic cylinder is bolted to the top of the fixing frame, the hydraulic rod of the hydraulic cylinder is bolted through the fixing frame and to an upper mold, a feed port is provided on the left side of the top of the upper mold, and an ejection assembly is provided in the inner cavity of the base; through the structural design of the motor, rotating shaft, gear, rack plate and ejection plate, after foam molding, the foam is quickly ejected from the lower mold, improving the demolding efficiency of the foam and avoiding damage to the foam during the removal process. When the motor is turned on, the motor drives the rotating shaft to rotate, the rotating shaft drives the gear to rotate, at this time the gear drives the rack plate to move upward, the rack plate drives the ejection plate to move upward, ejecting the foam out of the lower mold, completing the demolding.

Description

Technical Field

[0001] This utility model relates to the field of foam molding technology, specifically a foam molding rapid demolding device. Background Technology

[0002] Foamed plastic molding is a processing technology that introduces gas into plastic melt to form a bubble structure. The process includes three stages: bubble formation, expansion and solidification. This process needs to overcome the instability of the gas-liquid coexistence system and achieve the uniform generation of bubble nuclei by controlling the viscoelasticity of the melt and the foaming parameters. Among them, thermoplastic resin substrates (such as PE, PS and PU) have become the main application materials due to their strong process adaptability.

[0003] Existing foam molding equipment makes it difficult to remove foam from the molding tank after molding, which can easily lead to damage to the foam board, resulting in an increased foam defect rate and higher production costs. Therefore, a rapid demolding device for foam molding is proposed to address the above problems. Utility Model Content

[0004] The technical problem to be solved by this utility model is that the existing foam molding device has the disadvantage that it is not easy to remove the foam from the molding tank after molding, which can easily lead to damage to the foam board, resulting in an increase in the foam defect rate and production cost. To this end, we propose a foam molding quick demolding device.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a foam molding quick demolding device, including a base; a lower mold is provided at the center of the top of the base, a fixing frame is bolted to the top of the base, a hydraulic cylinder is bolted to the top of the fixing frame, the hydraulic rod of the hydraulic cylinder is bolted to the fixing frame and to the upper mold, a feed port is provided on the left side of the top of the upper mold, and an ejection assembly is provided in the inner cavity of the base.

[0006] Preferably, the ejection assembly includes a motor, a rotating shaft, gears, a rack plate, and an ejection plate. The motor is bolted to the right side of the base, and the output shaft of the motor is fixedly connected to the rotating shaft. The left side of the rotating shaft is rotatably connected to the left side of the inner cavity of the base through a bearing. Two gears are keyed to the surface of the rotating shaft, and the back of the gears meshes with the rack plate. Through slots are provided on both sides of the top of the base. The top of the rack plate passes through the through slot and the lower mold and is bolted to the ejection plate. The top of the ejection plate is flush with the bottom of the inner cavity of the lower mold.

[0007] Preferably, guide rods are bolted to all four sides of the bottom of the upper mold, and guide grooves that cooperate with the guide rods are opened on all four sides of the top of the lower mold.

[0008] Preferably, the base has a first sliding groove on both sides of the back of the inner cavity, and a first slider is slidably connected to the inner cavity of the first sliding groove. The front of the first slider is bolted to the back of the rack plate.

[0009] Preferably, a second sliding groove is provided on both sides of the inner cavity of the fixing frame, and a second slider is slidably connected to the inner cavity of the second sliding groove. The opposing side of the second slider is bolted to both sides of the upper mold.

[0010] Preferably, a protective frame is bolted to the right side of the base, and the motor is located inside the protective frame.

[0011] Preferably, the base has a maintenance cover on its front side.

[0012] The beneficial effects of this utility model are:

[0013] This invention utilizes a structural design incorporating a motor, rotating shaft, gears, rack and pinion plate, and ejector plate to quickly eject foam from the lower mold after foam molding, thereby improving the demolding efficiency of the foam and preventing damage to the foam during the removal process. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 3 This is a cross-sectional view of the base structure of this utility model;

[0018] Figure 4 For the present utility model Figure 3 Enlarged view of the structure at point A shown.

[0019] In the diagram: 1. Base; 2. Lower mold; 3. Fixing frame; 4. Hydraulic cylinder; 5. Upper mold; 6. Feed port; 7. Ejection assembly; 71. Motor; 72. Rotating shaft; 73. Gear; 74. Rack plate; 75. Ejection plate; 8. Guide rod; 9. Guide groove; 10. First slide groove; 11. First slider; 12. Second slide groove; 13. Second slider; 14. Protective frame. Detailed Implementation

[0020] 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 scope of protection of the present utility model.

[0021] The following is in conjunction with the appendix Figure 1 - Figure 4 This application will be described in further detail.

[0022] This application discloses a rapid demolding device for foam molding. (Refer to...) Figure 1 and Figure 2 A foam molding rapid demolding device includes a base 1; a lower mold 2 is provided at the center of the top of the base 1, a fixing frame 3 is bolted to the top of the base 1, a hydraulic cylinder 4 is bolted to the top of the fixing frame 3, the hydraulic rod of the hydraulic cylinder 4 is bolted through the fixing frame 3 and bolted to an upper mold 5, a feed port 6 is provided on the left side of the top of the upper mold 5, and an ejection assembly 7 is provided in the inner cavity of the base 1.

[0023] Reference Figure 3 and Figure 4 The ejector assembly 7 includes a motor 71, a rotating shaft 72, gears 73, a rack plate 74, and an ejector plate 75. The motor 71 is bolted to the right side of the base 1. The output shaft of the motor 71 is fixedly connected to the rotating shaft 72. The left side of the rotating shaft 72 is rotatably connected to the left side of the inner cavity of the base 1 through a bearing. Two gears 73 are keyed to the surface of the rotating shaft 72. The back of the gears 73 meshes with the rack plate 74. Through slots are provided on both sides of the top of the base 1. The top of the rack plate 74 passes through the through slot and the lower mold 2 and is bolted to the ejector plate 75. The top of the ejector plate 75 is flush with the bottom of the inner cavity of the lower mold 2. After the foam is formed, the foam is quickly ejected from the lower mold 2, which improves the demolding efficiency of the foam and avoids damage to the foam during the foam removal process.

[0024] The base 1 has a first sliding groove 10 on both sides of the back of the inner cavity. The inner cavity of the first sliding groove 10 is slidably connected to a first slider 11. The front of the first slider 11 is bolted to the back of the rack plate 74. The rack plate 74 is limited and assisted in lifting and lowering, which improves the stability of the rack plate 74 and thus improves the stability of the ejector plate 75.

[0025] Reference Figure 1 Guide rods 8 are bolted to all four sides of the bottom of the upper mold 5, and guide grooves 9 that cooperate with the guide rods 8 are opened on all four sides of the top of the lower mold 2; during the mold closing process, lateral offset or misalignment is avoided.

[0026] Reference Figure 1The inner cavity of the fixed frame 3 is provided with a second slide groove 12 on both sides. The inner cavity of the second slide groove 12 is slidably connected to a second slider 13. The opposite side of the second slider 13 is bolted to both sides of the upper mold 5; to limit the upper mold 5 and assist the upper mold 5 in lifting.

[0027] Reference Figure 3 A protective frame 14 is bolted to the right side of the base 1, and the motor 71 is located inside the protective frame 14; this protects the motor 71 and prevents tools and other items from falling onto the motor 71 and damaging it.

[0028] Reference Figure 1 The base 1 has a maintenance cover on the front, which facilitates the maintenance of the components inside the base 1.

[0029] Working principle: When in use, hydraulic cylinder 4 is turned on, which drives the upper mold 5 to move downward. At this time, guide rod 8 is inserted into guide groove 9 to close the mold. Then, material is injected from the feed port 6. When the foam is formed, hydraulic cylinder 4 drives the upper mold 5 to move upward. Then, motor 71 is turned on, which drives rotating shaft 72 to rotate. Rotating shaft 72 drives gear 73 to rotate. At this time, gear 73 drives rack plate 74 to move upward. Rack plate 74 drives ejector plate 75 to move upward, ejecting the foam out of lower mold 2 and completing demolding.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A foam molding quick demolding apparatus characterized by comprising: Includes a base (1); a lower mold (2) is provided at the center of the top of the base (1), a fixing frame (3) is bolted to the top of the base (1), a hydraulic cylinder (4) is bolted to the top of the fixing frame (3), the hydraulic rod of the hydraulic cylinder (4) is bolted to the through fixing frame (3) and to the upper mold (5), a feed port (6) is provided on the left side of the top of the upper mold (5), and an ejection assembly (7) is provided in the inner cavity of the base (1).

2. A foam molding quick demolding apparatus according to claim 1, characterized by: The ejector assembly (7) includes a motor (71), a rotating shaft (72), a gear (73), a rack plate (74), and an ejector plate (75). The motor (71) is bolted to the right side of the base (1). The output shaft of the motor (71) is fixedly connected to the rotating shaft (72). The left side of the rotating shaft (72) is rotatably connected to the left side of the inner cavity of the base (1) through a bearing. Two gears (73) are keyed to the surface of the rotating shaft (72). The back of the gears (73) meshes with the rack plate (74). Through slots are provided on both sides of the top of the base (1). The top of the rack plate (74) passes through the through slot and the lower mold (2) and is bolted to the ejector plate (75). The top of the ejector plate (75) is flush with the bottom of the inner cavity of the lower mold (2).

3. A foam molding quick demolding apparatus according to claim 1, characterized by: Guide rods (8) are bolted to the bottom of the upper mold (5) around the perimeter, and guide grooves (9) that cooperate with the guide rods (8) are provided around the top of the lower mold (2).

4. A foam molding quick demolding apparatus according to claim 2, characterized by: The base (1) has a first sliding groove (10) on both sides of the back of the inner cavity. The inner cavity of the first sliding groove (10) is slidably connected to a first slider (11). The front of the first slider (11) is bolted to the back of the rack plate (74).

5. A foam molding quick demolding apparatus according to claim 1, characterized by: The inner cavity of the fixed frame (3) is provided with a second slide groove (12) on both sides. The inner cavity of the second slide groove (12) is slidably connected to a second slider (13). The opposing side of the second slider (13) is bolted to both sides of the upper mold (5).

6. The foam molding rapid demolding device according to claim 2, characterized in that: A protective frame (14) is bolted to the right side of the base (1), and the motor (71) is located in the inner cavity of the protective frame (14).

7. A foam molding quick demolding apparatus according to claim 1, characterized by: The base (1) has a maintenance cover on its front side.

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