Foam forming mold

Abstract

The utility model discloses a foam forming mould, which relates to the technical field of foam forming, and comprises a base and a support column, the surface of the base is fixedly provided with a [-shaped frame, the bottom end of the [-shaped frame is rotatably connected with a screw rod, one end of the screw rod is connected with an output shaft of a motor, and two ends of the screw rod are in threaded connection with nut blocks. The surface of the nut block is fixedly connected with a combined female die through an L-shaped rod, a hydraulic cylinder is fixedly installed on the inner wall of the top of the supporting column, and a male die is fixedly installed at the bottom of the hydraulic cylinder. Through the fixing rod, the rack A, the spur gear A, the spur gear B, the rack B and the cutting knife, the fixing rod moves upwards, when the fixing rod moves to a certain position, the rack A is driven to move upwards, the meshed spur gear A rotates, the spur gear A rotates to drive the fixedly connected spur gear B to rotate at the same time, and the rack B meshed with the surface of the spur gear B moves; and the rack B moves to enable the fixedly connected cutting knife to move for cutting, and redundant parts are better removed.

Description

Technical Field

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

[0002] Foam boxes are box-shaped packaging containers made of foam plastic. Foam plastic is a type of plastic with many tiny air pores inside. Foam boxes are often used for transporting fruits and packaging goods. Foam box production molds are molds used to produce foam boxes.

[0003] China has disclosed a molding die for producing foam boxes, with the publication number CN222079889U. Through the cooperation between the sliding plate, the U-shaped rod, and the sleeve plate, the two concave dies can move and separate on the support roller, thereby facilitating the removal of the foam box formed between the two concave dies.

[0004] Combining the above-disclosed solutions and existing technologies, the existing technology generally uses an upper mold to extrude the lower mold to form the foam box. When the foam is subjected to the pressure of extrusion, the foam box is prone to expansion, and the edge protrudes higher than the edge of the lower mold, forming a bulge. Since this part is not restricted by the lower mold, it will deviate outward, that is, the opening after formation is large and irregular. Therefore, the excess part needs to be removed. Therefore, we designed a foam molding mold. Utility Model Content

[0005] The purpose of this invention is to provide a foam molding mold to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a foam molding mold, including a base and a support column, a C-shaped frame is fixedly installed on the surface of the base, a lead screw is rotatably connected to the bottom end of the C-shaped frame, one end of the lead screw is connected to the output shaft of a motor, and nut blocks are threaded to both ends of the lead screw, and a combined concave mold is fixedly connected to the surface of the nut blocks through an L-shaped rod.

[0007] A hydraulic cylinder is fixedly installed on the inner wall of the top of the support column. A punch is fixedly installed at the bottom of the hydraulic cylinder. A sliding rod is installed on the top of the punch. The sliding rod is slidably disposed in a groove on the surface of the support column. A fixed rod is fixedly connected to one side of the sliding rod. One end of the fixed rod is slidably connected to a rack A. A spur gear A meshes with the surface of the rack A. A spur gear B is fixedly connected to the surface of the spur gear A through a connecting rod. A rack B meshes with the surface of the spur gear B. A cutting blade is fixedly connected to one end of the rack B.

[0008] Optionally, a gravity block is fixedly connected to the bottom of the rack A.

[0009] Optionally, the connecting rod is fitted with a bearing, which is fixedly connected to the inner wall of the protective shell by a crossbar.

[0010] Optionally, a protective shell is provided on one side of the support column, and the rack A, spur gear A, spur gear B and rack B are all disposed inside the protective shell.

[0011] Optionally, support plates are fixedly connected to both sides of the support column, and the surface of the support plates is provided with grooves for the cutting blade to slide.

[0012] Optionally, both ends of the lead screw are provided with seated bearings, which are fixedly connected to the surface of the base.

[0013] Optionally, the L-shaped rod includes an L-shaped rod and two round rods, and the surface of the C-shaped frame has small holes for the round rods to pass through.

[0014] The technical effects and advantages of this utility model are as follows:

[0015] 1. This utility model uses a fixed rod, rack A, spur gear A, spur gear B, rack B, and a cutting blade. The fixed rod moves upward, and when it moves to a certain position, it drives rack A upward, causing the meshing spur gear A to rotate. The rotation of spur gear A drives the fixedly connected spur gear B to rotate simultaneously, causing rack B, which meshes with the surface of spur gear B, to move. The movement of rack B causes the fixedly connected cutting blade to move and cut, thus better removing excess material.

[0016] 2. This utility model uses a lead screw and an L-shaped rod. After the foam model is cooled and cut off, the lead screw rotates and drives the L-shaped rod to move to both sides, causing the combined cavity mold to separate from the foam model, thus avoiding the phenomenon of cracking of the foam model during demolding and ejection. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the combined concave and convex die structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the rack A and rack B of this utility model.

[0020] In the diagram: 1. Base; 2. C-shaped frame; 3. Lead screw; 4. Nut block; 5. Combined die; 6. Support column; 7. Hydraulic cylinder; 8. Punch; 9. Sliding rod; 10. Fixed rod; 11. Cutting blade; 12. Support plate; 13. Motor; 14. Rack A; 15. Spur gear A; 16. Spur gear B; 17. Rack B; 18. Gravity block; 19. L-shaped rod. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] This utility model provides, for example Figure 1-3 The foam molding mold shown includes a base 1 and a support column 6. A C-shaped frame 2 is fixedly installed on the surface of the base 1. A lead screw 3 is rotatably connected to the bottom end of the C-shaped frame 2. Both ends of the lead screw 3 are provided with seated bearings, which are fixedly connected to the surface of the base 1. One end of the lead screw 3 is connected to the output shaft of the motor 13. Nut blocks 4 are threaded to both ends of the lead screw 3. A combined die 5 is fixedly connected to the surface of the nut blocks 4 through an L-shaped rod 19. The L-shaped rod 19 includes an L-shaped rod and two round rods. The surface of the C-shaped frame 2 has small holes for the round rods to pass through, which expands the movement range of the combined die 5.

[0023] A hydraulic cylinder 7 is fixedly installed on the inner wall of the top of the support column 6. A punch 8 is fixedly installed at the bottom of the hydraulic cylinder 7. A sliding rod 9 is installed on the top of the punch 8. The sliding rod 9 is slidably disposed in a groove on the surface of the support column 6. A fixed rod 10 is fixedly connected to one side of the sliding rod 9. One end of the fixed rod 10 is slidably connected to the rack A14. The rack A14 is hollow inside. A slider is connected to one end of the fixed rod 10. When the slider slides to the top of the rack A14, it drives the rack A14 to move upward together. A gravity block 18 is fixedly connected to the bottom of the rack A14. The rod part at the upper end of the gravity block 18 can add counterweight to ensure that the cutting blade 11 is reset. The gravity block 18 can be increased on the original basis to prevent the rack A14 from being too light to fall. A spur gear A15 meshes on the surface of the rack A14. Gear A15 is fixedly connected to spur gear B16 via a connecting rod. A bearing is fitted over the connecting rod, and the bearing is fixedly connected to the inner wall of the protective shell via a crossbar to support the connecting rod and prevent it from shifting. A rack B17 meshes with the surface of spur gear B16, and a cutting blade 11 is fixedly connected to one end of rack B17. The cutting blade 11 cuts off excess foam generated by extrusion to avoid affecting the quality of the foam model. Support plates 12 are fixedly connected to both sides of support column 6. The surface of the support plate 12 has a sliding groove for the cutting blade 11 to slide. A protective shell is provided on one side of support column 6 to prevent dust and foam from falling onto the device and reducing its service life. Rack A14, spur gear A15, spur gear B16, and rack B17 are all housed inside the protective shell.

[0024] The implementation principle of a foam molding die in this embodiment is as follows: the hydraulic cylinder 7 drives the punch 8 downward to extrude and mold the foam. After extrusion, the punch 8 is raised away from the interior of the combined die 5. The sliding rod 9 connected to the surface of the combined die 5 drives the fixed rod 10 to move upward at the same time. When the fixed rod 10 moves to a certain position, it drives the rack A14 upward, causing the spur gear A15 meshing on the surface to rotate. The rotation of the spur gear A15 drives the fixedly connected spur gear B16 to rotate at the same time, causing the rack B17 meshing on the surface of the spur gear B16 to move. The movement of the rack B17 causes the fixedly connected cutting blade 11 to move to cut and remove the excess part. When the punch 8 moves to the top, the rack A14 is lowered due to the gravity block 18 connected to the bottom, causing the cutting blade 11 to move back to its original position. The screw 3 rotates and drives the L-shaped rod 19 to move to both sides, causing the combined die 5 to separate from the foam model, thereby removing the foam model.

[0025] When the distance the punch 8 moves is higher than the cutting blade 11, the cutting blade 11 will start to move to cut. When the punch 8 descends to be close to the cutting blade 11, the cutting blade 11 will stop moving, and the punch 8 will descend into the combined die 5.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A foam molding mold, characterized in that, include: A base (1) is fixedly mounted on the surface of the base (1). A screw (3) is rotatably connected to the bottom end of the screw (2). One end of the screw (3) is connected to the output shaft of the motor (13). Nut blocks (4) are threaded to both ends of the screw (3). A combined die (5) is fixedly connected to the surface of the nut block (4) through an L-shaped rod (19). A support column (6) is provided. A hydraulic cylinder (7) is fixedly installed on the inner wall of the top of the support column (6). A punch (8) is fixedly installed at the bottom of the hydraulic cylinder (7). A sliding rod (9) is installed on the top of the punch (8). The sliding rod (9) is slidably disposed in a groove on the surface of the support column (6). A fixing rod (10) is fixedly connected to one side of the sliding rod (9). One end of the fixing rod (10) is slidably connected to a rack A (14). A spur gear A (15) meshes with the surface of the rack A (14). A spur gear B (16) is fixedly connected to the spur gear A (15) through a connecting rod. A rack B (17) meshes with the surface of the spur gear B (16). A cutting blade (11) is fixedly connected to one end of the rack B (17).

2. The foam molding mold according to claim 1, characterized in that: A gravity block (18) is fixedly connected to the bottom of the rack A (14).

3. The foam molding mold according to claim 1, characterized in that: The connecting rod is fitted with a bearing, which is fixedly connected to the inner wall of the protective shell by a crossbar.

4. A foam molding mold according to claim 1, characterized in that: A protective shell is provided on one side of the support column (6), and the rack A (14), spur gear A (15), spur gear B (16) and rack B (17) are all located inside the protective shell.

5. A foam molding mold according to claim 1, characterized in that: Both sides of the support column (6) are fixedly connected to support plates (12), and the surface of the support plate (12) is provided with a sliding groove for the cutting blade (11) to slide.

6. A foam molding mold according to claim 1, characterized in that: Both ends of the lead screw (3) are provided with seated bearings, which are fixedly connected to the surface of the base (1).

7. A foam molding mold according to claim 1, characterized in that: The L-shaped rod (19) includes an L-shaped rod and two round rods, and the surface of the shaped frame (2) is provided with small holes for the round rods to pass through.

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