Blister box forming die

Abstract

The utility model relates to the blister field discloses a kind of blister box forming die, including bottom plate, the top of the bottom plate is fixedly connected with bottom mould, the top of the bottom mould is provided with top mould, the top of the bottom plate is provided with recovery groove, the top of the bottom plate is fixedly connected with return bend, the inner wall of the return bend is fixedly connected with valve through pipeline, the bottom end of the valve is fixedly connected with suction tube, the inner wall of the return bend is also fixedly connected with suction hopper through pipeline, the outside of the suction hopper is provided with collection box, the inner wall of the collection box is fixedly connected with positioning frame, the inside of the positioning frame is provided with filter frame, the inner wall of the filter frame is fixedly connected with filter screen, the outer wall of the collection box is fixedly connected with air pump, the outer wall of the top mould is penetrated and is provided with through slot. In the utility model, automatic waste recovery system realizes the timely cleaning and recycling of waste, reduces production cost.

Description

Technical Field

[0001] This utility model relates to the field of blister packaging, and in particular to a blister box forming mold. Background Technology

[0002] The working principle of blister box forming mold is to first heat the plastic sheet to a softened state, and then use the small holes on the mold to generate negative pressure through a vacuum pump to adsorb the softened plastic sheet onto the mold surface, so that it fits the shape of the mold. After cooling, the plastic sheet hardens and sets, thus forming a blister box.

[0003] A search revealed that Chinese Patent Publication No. CN212949151U discloses a blister box forming mold. By creating corresponding grooves on the top of the long and short frames and fixing a pressing plate to the bottom of the lid, it can solve the problem of weak clamping force in previous blister forming molds. Furthermore, by movably connecting the long and short frames to the pins on the top of the base, it effectively solves the problem that the blister-formed product is difficult to remove due to the excessive depth of the mold cavity.

[0004] The above technical solutions address the problem of product removal after vacuum forming by using long and short frames. However, the mold cavity requires the sheet material to be larger than the mold's projected area to ensure complete coverage and sufficient clamping edges. Consequently, waste material is inevitably generated during the vacuum forming mold production process. The inability to cut and collect the frame waste leads to increased processes, reduced efficiency, increased costs, and risks of secondary product damage. Therefore, a vacuum forming mold is proposed to solve these problems. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a blister box forming mold, which aims to improve the problem that the existing blister box forming mold lacks the function of cutting and collecting edge waste, which leads to increased production costs due to the need for subsequent processes.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a blister box forming mold, including a base plate, a bottom mold fixedly connected to the top of the base plate, a top mold provided on the top of the bottom mold, a recycling groove opened on the top of the base plate, a U-shaped tube fixedly connected to the top of the base plate, a valve fixedly connected to the inner wall of the U-shaped tube via a pipe, an adsorption tube fixedly connected to the bottom end of the valve, a suction bucket fixedly connected to the inner wall of the U-shaped tube via a pipe, a collection box provided outside the suction bucket, a positioning frame fixedly connected to the inner wall of the collection box, a filter frame provided inside the positioning frame, a filter screen fixedly connected to the inner wall of the filter frame, an air pump fixedly connected to the outer wall of the collection box, a through groove opened through the outer wall of the top mold, a cutter provided inside the through groove, an auxiliary blade fixedly connected to the outer wall of the cutter, and a disassembly assembly provided on the outer wall of the cutter.

[0007] As a further description of the above technical solution:

[0008] The air pump's inlet pipe penetrates one side of the outer wall of the collection box and is located on the side of the filter screen away from the suction hopper.

[0009] As a further description of the above technical solution:

[0010] The adsorption tube is inclined downwards and is located inside the recovery tank.

[0011] As a further description of the above technical solution:

[0012] The auxiliary blade is fixedly connected to the outer wall of the cutter on the side away from the top mold. The positioning frame is U-shaped and has two sets arranged in a mirror image on the inner wall of the collection box.

[0013] As a further description of the above technical solution:

[0014] The assembly / disassembly assembly includes a folding plate, a protrusion fixedly connected to the side wall of the folding plate, a groove opened on the top of the top mold, a screw hole opened on the top of the top mold, and a bolt threadedly connected to the inner wall of the folding plate.

[0015] As a further description of the above technical solution:

[0016] The folding plate is hinged to the top of the cutter, the inner wall of the screw hole is threaded to the outer wall of the bolt, and the inner wall of the groove is adapted to the outer wall of the protrusion.

[0017] As a further description of the above technical solution:

[0018] The outer wall of the bottom mold is fixedly connected to a wear-resistant pad, and the top of the wear-resistant pad has an inclined surface.

[0019] As a further description of the above technical solution:

[0020] The wear-resistant pad is arranged in a U-shape, and the bottom of the wear-resistant pad is fixedly connected to the inner wall of the recycling tank. The inclined surface is set towards the side away from the bottom mold and is inclined downward.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, edge material is quickly separated by a high-strength cutter, and then the circular recycling trough accurately receives the annular edge material. The multi-point adsorption system extracts the material efficiently, and the anti-clogging design of the suction bucket, combined with the sealed collection box, ensures stable negative pressure conveying. The quick-release components facilitate the maintenance of the cutter, and the automatic waste recycling system enables timely cleaning and recycling of waste, reducing production costs.

[0023] 2. In this utility model, the wear-resistant pad protects the bottom mold from the impact of the cutter. Its precise matching with the contour of the cutter avoids direct damage. The inclined surface design uses gravity guidance to allow the edge material to slide quickly into the recycling tank, reducing residue on the pad surface and achieving immediate recycling, thereby extending the equipment life and improving the edge material processing efficiency. Attached Figure Description

[0024] Figure 1 This is a side view of the main structure of a blister box forming mold proposed in this utility model;

[0025] Figure 2 This is a top view showing a partial separation of the main structure of a blister box forming mold proposed in this utility model;

[0026] Figure 3 This utility model proposes a blister box forming mold. Figure 2 Enlarged view of region A in the middle;

[0027] Figure 4 This is a bottom view of a partial separation of the main structure of a blister box forming mold proposed in this utility model;

[0028] Figure 5 This utility model proposes a blister box forming mold. Figure 4 Enlarged schematic diagram of region B in the middle.

[0029] Legend:

[0030] 1. Base plate; 2. Bottom mold; 3. Top mold; 4. Recycling tank; 5. U-shaped tube; 6. Suction bucket; 7. Valve; 8. Collection box; 9. Positioning frame; 10. Filter frame; 11. Filter screen; 12. Air pump; 13. Through groove; 14. Cutter; 15. Auxiliary blade; 16. Wear-resistant pad; 17. Inclined surface; 18. Folding plate; 19. Protrusion; 20. Groove; 21. Screw hole; 22. Bolt; 23. Adsorption tube. Detailed Implementation

[0031] 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.

[0032] Reference Figures 1-3 This utility model provides an embodiment of a blister box forming mold, including a base plate 1, a bottom mold 2 fixedly connected to the top of the base plate 1, a top mold 3 set on the top of the bottom mold 2, a recycling groove 4 opened on the top of the base plate 1, forming a dedicated area for edge material collection around the bottom mold 2, preventing edge material from scattering and polluting the equipment and working environment. The recycling groove 4 is U-shaped, its shape matching the outer contour of the blister box, ensuring that all the annular edge material generated during cutting can fall into the groove, improving the integrity of edge material collection. A U-shaped tube 5, made of corrosion-resistant material, is fixedly connected to the top of the base plate 1, serving as the main channel for airflow circulation, connecting multiple adsorption tubes 23 to a suction bucket 6, realizing centralized transportation of edge material. A valve 7 is fixedly connected to the inner wall of the U-shaped tube 5 through a pipe, which can individually control the airflow of the corresponding adsorption tube 23, facilitating the adjustment of the adsorption area according to the edge material distribution, saving energy. An adsorption tube 23 is fixedly connected to the bottom end of the valve 7, the tube opening is polished to avoid scratching the edge material, and its tilt angle is adjusted. Through optimized design, the edge material in the recycling tank 4 can be captured more efficiently. The adsorption tube 23 is set in a downward inclined position, so that the adsorption force is inclined to the bottom of the recycling tank 4, which enhances the adsorption effect on the deposited edge material and reduces the residue in the tank. The adsorption tube 23 is located inside the recycling tank 4. Several sets of valves 7 and adsorption tubes 23 are set in a rectangular array on the surface of the loop tube 5, which is evenly distributed on the loop tube 5 to form a multi-point adsorption system, ensuring that the edge material in every corner of the recycling tank 4 can be covered, so that the adsorption force is evenly distributed in the recycling tank 4, avoiding edge material accumulation due to insufficient local adsorption force. The inner wall of the loop tube 5 is also fixedly connected to the suction bucket 6 through the pipe. Its large diameter design can collect the edge material transported by multiple sets of adsorption tubes 23, reducing the risk of blockage during the transmission of edge material. The loop tube 5 is a ring-shaped closed pipeline. Its inner cavity is isolated from the external air by welding or sealing rings from the interfaces of all adsorption tubes 23 and suction bucket 6, forming a closed negative pressure channel, ensuring that the negative pressure generated by the air pump 12 can be effectively transmitted to the adsorption tube 23.

[0033] Reference Figures 1-2 , Figure 4A collection box 8 is installed outside the suction bucket 6. The outer wall of the pipe connecting the collection box 8 and the suction bucket 6 is fixedly connected. The connection is made by welding or flange to ensure that there is no air leakage at the interface, so that the air pump 12 can form a stable negative pressure environment. The collection box 8 is equipped with a sealing door. When closed, the inside of the box is sealed. The edge of the sealing door of the collection box 8 is equipped with a rubber strip. When closed, the locking device squeezes to achieve an airtight seal. The air pump 12 inlet pipe is connected to the box body with an interference fit sealing sleeve. A positioning frame 9 is fixedly connected to the inner wall of the collection box 8. It is made of high-strength metal material. Its U-shaped structure can firmly hold the filter frame 10 to prevent the filter frame 10 from shifting under the impact of airflow. The positioning frame 9 is U-shaped and there are two sets of them distributed in a mirror image on the inner wall of the collection box 8. The filter frame 10 is installed inside the positioning frame 9. A filter screen 11 is fixedly connected to the inner wall of the filter frame 10. The filter screen 11 is made of 304 stainless steel with a pore size of 3-5mm. A steel mesh is used, and an air pump 12 is fixedly connected to the outer wall of the collection box 8. A high-power model is selected to provide strong suction. By drawing air out of the collection box 8 to form negative pressure, the entire edge material recycling system is driven to operate. The air inlet pipe of the air pump 12 runs through one side of the outer wall of the collection box 8 and is located on the side of the filter screen 11 away from the suction hopper 6. A through groove 13 is opened through the outer wall of the top mold 3. A cutter 14 is set inside the through groove 13. The blade is made of high-hardness alloy material and has been quenched, which has excellent wear resistance and sharpness and can quickly cut the edge material of the blister box. The through groove 13 and the cutter 14 are respectively arranged in four sets in a rectangular array. The bottom of the cutter 14 is sharpened. An auxiliary blade 15 is fixedly connected to the outer wall of the cutter 14. Several auxiliary blades 15 are arranged and are evenly distributed on the outer wall of the four sets of cutters 14. The auxiliary blades 15 are sharpened on both sides in the area away from the cutter 14. The auxiliary blades 15 are fixedly connected to the outer wall of the cutter 14 on the side away from the top mold 3.

[0034] Reference Figures 3-5 The outer wall of the cutter 14 is provided with a disassembly assembly, which includes a folding plate 18, a protrusion 19, a groove 20, a screw hole 21, and a bolt 22. The folding plate 18 is hinged to the top of the cutter 14. Each set of cutters 14 is provided with a set of folding plates 18, a set of protrusions 19, and two sets of bolts 22. The top mold 3 is provided with screw holes 21 at corresponding positions, which can remove the cutter 14 from the through groove 13. The side wall of the folding plate 18 is fixedly connected to the protrusion 19. The top of the top mold 3 is provided with a groove 20. The inner wall of the groove 20 is adapted to the outer wall of the protrusion 19. The top of the top mold 3 is provided with a screw hole 21. The inner wall of the folding plate 18 is threadedly connected to the bolt 22. The inner wall of the screw hole 21 is threadedly connected to the outer wall of the bolt 22.

[0035] Reference Figure 2The outer wall of the bottom mold 2 is fixedly connected to a wear-resistant pad 16, which is made of high wear-resistant cast iron and has been hardened. It can withstand repeated impacts and friction from the cutter 14, extending the service life of the bottom mold 2. The wear-resistant pad 16 is shaped like a U-shape and is perfectly matched with the outer dimensions of the bottom mold 2, ensuring that the cutter 14 can accurately land on the pad when it falls, avoiding direct contact between the cutter 14 and the bottom mold 2 and causing damage. The bottom of the wear-resistant pad 16 is fixedly connected to the inner wall of the recycling tank 4. The top of the wear-resistant pad 16 is provided with an inclined surface 17, which is set towards the side away from the bottom mold 2 and tilts downward. By using gravity and the guiding effect of the inclined surface 17, the edge material can be quickly separated from the surface of the pad and enter the recycling tank 4, improving the timeliness of edge material recycling.

[0036] Working principle: During the blister box forming process, the plastic sheet is heated and softened, then covers the bottom mold 2. The top mold 3 closes downwards and applies pressure, causing the plastic sheet to form between the bottom mold 2 and the top mold 3. During the mold closing process, the cutter 14 in the through groove 13 and the auxiliary blade 15 on its outer wall press down simultaneously. The cutting edge at the bottom of the cutter 14 and the two sides of the auxiliary blade 15 work together to cut off the outline and excess scraps inside the formed blister box. The cut waste debris falls into the U-shaped recycling trough 4 at the top of the bottom plate 1. At this time, the air pump 12 starts, generating negative pressure in the collection box 8. The negative pressure is transmitted through the pipe to the suction bucket 6 and the U-shaped tube 5, and finally acts on each suction tube 23. Since the suction tube 23 is inclined downwards in the recycling trough 4, the negative pressure draws the waste debris scattered in the recycling trough 4 through the suction tube 23, and into the collection box 8 through the valve 7, the U-shaped tube 5 and the suction bucket 6. When the mold closes, the top mold 3... When pressed down, the cutter 14 descends synchronously to cut the edge material. When the mold opens, the top mold 3 rises by 5-10cm, at which point the recycling tank 4 is fully exposed. The air pump 12 automatically starts to adsorb the edge material. The filter frame 10 in the collection box 8 is fixed by the U-shaped positioning frame 9. Its filter screen 11 intercepts waste debris. The filtered air is discharged by the air pump 12, and the waste accumulates at the bottom of the collection box 8. It can be cleaned through the sealed door. The wear-resistant pad 16 on the periphery of the bottom mold 2 guides the waste to slide into the recycling tank 4 through the inclined surface 17, while protecting the edge of the bottom mold 2. The maintenance of the cutter 14 is achieved by disassembling and assembling the components. When the equipment is stopped for maintenance, the operator opens the top mold 3 and replaces the cutter 14 in the open state by disassembling and assembling the components. Loosen the bolt 22 to make it disengage from the screw hole 21, flip the hinged folding plate 18, and drive the protrusion 19 to disengage from the groove 20. The cutter 14, together with the auxiliary blade 15, can then be taken out of the through groove 13 for replacement or maintenance.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.

Claims

1. A blister box forming mold, comprising a base plate (1), wherein a bottom mold (2) is fixedly connected to the top of the base plate (1), and a top mold (3) is provided on the top of the bottom mold (2), characterized in that: The top of the base plate (1) is provided with a recycling trough (4), and the top of the base plate (1) is fixedly connected with a U-shaped tube (5). The inner wall of the U-shaped tube (5) is fixedly connected with a valve (7) through a pipe. The bottom end of the valve (7) is fixedly connected with an adsorption tube (23). The inner wall of the U-shaped tube (5) is also fixedly connected with a suction bucket (6) through a pipe. The outside of the suction bucket (6) is provided with a collection box (8). The inner wall of the collection box (8) is fixedly connected with a positioning frame (9). The inside of the positioning frame (9) is provided with a filter frame (10). The inner wall of the filter frame (10) is fixedly connected with a filter screen (11). The outer wall of the collection box (8) is fixedly connected with an air pump (12). The outer wall of the top mold (3) is provided with a through groove (13). The inside of the through groove (13) is provided with a cutter (14). The outer wall of the cutter (14) is fixedly connected with an auxiliary blade (15). The outer wall of the cutter (14) is provided with a disassembly assembly.

2. The blister box forming mold according to claim 1, characterized in that: The air inlet pipe of the air pump (12) passes through one side of the outer wall of the collection box (8) and is located on the side of the filter screen (11) away from the suction hopper (6).

3. The blister box forming mold according to claim 1, characterized in that: The adsorption tube (23) is inclined downwards and is located inside the recovery tank (4).

4. The blister box forming mold according to claim 1, characterized in that: The auxiliary blade (15) is fixedly connected to the outer wall of the cutter (14) away from the top mold (3). The positioning frame (9) is arranged in a U-shape and has two sets arranged in a mirror image on the inner wall of the collection box (8).

5. The blister box forming mold according to claim 1, characterized in that: The assembly and disassembly assembly includes a folding plate (18), a protrusion (19) is fixedly connected to the side wall of the folding plate (18), a groove (20) is opened on the top of the top mold (3), a screw hole (21) is opened on the top of the top mold (3), and a bolt (22) is threadedly connected to the inner wall of the folding plate (18).

6. The blister box forming mold according to claim 5, characterized in that: The folding plate (18) is hinged to the top of the cutter (14), the inner wall of the screw hole (21) is threaded to the outer wall of the bolt (22), and the inner wall of the groove (20) is adapted to the outer wall of the protrusion (19).

7. The blister box forming mold according to claim 1, characterized in that: The outer wall of the bottom mold (2) is fixedly connected to a wear-resistant pad (16), and the top of the wear-resistant pad (16) is provided with an inclined surface (17).

8. The blister box forming mold according to claim 7, characterized in that: The wear-resistant pad (16) is arranged in a U-shape. The bottom of the wear-resistant pad (16) is fixedly connected to the inner wall of the recycling tank (4). The inclined surface (17) is arranged facing away from the bottom mold (2) and tilts downward.

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