Dual station rotary in-mold cutting thermoforming machine

Abstract

The application relates to the technical field of in-mold cutting thermoforming machines, in particular to a double-station conversion in-mold cutting thermoforming machine which comprises an outer fence, an uncoiler is fixedly installed outside the outer fence, a pre-heating machine is fixedly installed at the inner edge of the outer fence, a driving chain channel is installed in the outer fence, the output end of the pre-heating machine is in butt joint with the starting end of the driving chain channel, a sheet heating device is cooperatively installed on the driving chain channel, the output end of the sheet heating device is in butt joint with a forming mold in-mold cutting unit, two suction cup type mechanical hands are fixedly installed at the two sides of the forming mold in-mold cutting unit, two output conveying belts are correspondingly and cooperatively installed at the ends of the two suction cup type mechanical hands which are away from the uncoiler, the forming mold in-mold cutting unit is improved, one lower mold is moved out after a plastic container is formed, the product is taken out by the mechanical hand, meanwhile, the other lower mold is sent into the lower side of the upper mold to continue pressing and forming, the operation is repeated, the idle time of the equipment is reduced, and the energy consumption of the equipment is saved.

Description

Technical Field

[0001] This utility model relates to the field of molding technology of a dual-station in-mold thermoforming machine, and in particular to a dual-station in-mold thermoforming machine. Background Technology

[0002] Plastic containers can be used to hold liquid beverages such as drinks, tea, and yogurt, as well as solid foods such as bowls, mooncake trays, and egg cartons. They are very convenient to use and are therefore widely used in our lives. The processing of plastic containers is generally carried out by thermoforming machines. After the existing plastic container thermoforming machines have completed the molding and pressing, the lower mold needs to be removed first, and then the robot arm needs to take out the finished product before the lower mold is sent back to the corresponding position of the upper mold. During this process, the machine runs continuously, consuming a lot of electrical energy and causing energy waste.

[0003] Therefore, it is essential to provide a dual-station in-mold thermoforming machine to address the shortcomings of existing technologies. Utility Model Content

[0004] The purpose of this invention is to provide a dual-station in-mold thermoforming machine that avoids the shortcomings of existing technologies. This dual-station in-mold thermoforming machine improves the in-mold cutting unit of the forming mold. After the plastic container is formed, one lower mold is removed and the product is taken out by a robot. At the same time, the other lower mold is sent under the upper mold to continue pressing and forming. This process is repeated to reduce the downtime of the thermoforming machine and save energy.

[0005] The above-mentioned objectives of this utility model are achieved through the following technical means.

[0006] A dual-station in-die cutting thermoforming machine is provided, including an outer enclosure. An uncoiler is fixedly installed outside the outer enclosure, a preheater is fixedly installed on the inner edge of the outer enclosure, and a drive chain is installed inside the outer enclosure. The output end of the preheater is connected to the starting end of the drive chain. A sheet heating device is installed on the drive chain. An in-die cutting unit is connected to the output end of the sheet heating device. Two suction cup robotic arms are fixedly installed on both sides of the in-die cutting unit. Two output conveyor belts are correspondingly installed on the ends of the two suction cup robotic arms away from the uncoiler. A waste collection roll is fixedly installed on the side of the outer enclosure near the output conveyor belts.

[0007] Specifically, the forming die in-cut unit includes a lower fixed template, on which a lower die servo drive module is fixedly installed. A linear slide rail is fixedly installed above the lower fixed template. A first forming die lower cavity and a second forming die lower cavity are slidably installed on the linear slide rail. The output end of the lower die servo drive module is connected to the first forming die lower cavity and the second forming die lower cavity. An upper fixed template is also fixedly installed above the linear slide rail. An upper servo stretching electric cylinder is installed on the upper fixed template. The output end of the upper servo stretching electric cylinder extends to the lower part of the upper fixed template and is fixedly installed on the upper forming die upper cavity. The upper forming die upper cavity is in movable forming cooperation with the first forming die lower cavity and the second forming die lower cavity.

[0008] Specifically, the sheet heating device includes an outer frame, on which an upper heating plate and a lower heating plate are fixedly installed. An insulation plate is installed between the upper heating plate and the lower heating plate. The upper heating plate and the lower heating plate are located above and below the drive chain track, respectively.

[0009] This invention improves the in-die cutting unit of the molding die. After the plastic container is formed, one lower die is removed and the product is taken out by a robot. At the same time, another lower die is sent under the upper die to continue pressing and forming. This process is repeated to reduce the downtime of the thermoforming machine and save energy. Attached Figure Description

[0010] The present invention will be further described with reference to the accompanying drawings, but the content of the drawings does not constitute any limitation on the present invention.

[0011] Figure 1 This is a three-dimensional structural diagram of the dual-station conversion mold in-mold thermoforming machine of this utility model.

[0012] Figure 2 This is a top view of the dual-station conversion mold in-mold thermoforming machine of this utility model.

[0013] Figure 3 This is a side view of the dual-station conversion mold in-mold thermoforming machine of this utility model.

[0014] Figure 4 This is a three-dimensional structural diagram of the uncoiling machine of the dual-station conversion mold in-mold thermoforming machine of this utility model.

[0015] Figure 5 This is a partial three-dimensional structural diagram of the drive chain of the dual-station conversion mold in-mold thermoforming machine of this utility model.

[0016] Figure 6 This is a three-dimensional structural diagram of the sheet heating device of the dual-station conversion mold in-mold thermoforming machine of this utility model.

[0017] Figure 7This is a three-dimensional structural diagram of the preheating machine of the dual-station conversion mold in-mold thermoforming machine of this utility model.

[0018] Figure 8 This is a three-dimensional structural diagram of the waste collection roll of the dual-station conversion mold in-mold thermoforming machine of this utility model.

[0019] Figure 9 This is a three-dimensional structural diagram of the in-mold cutting unit of the dual-station conversion in-mold thermoforming machine of this utility model.

[0020] from Figures 1 to 9 Including:

[0021] 1. External fence;

[0022] 2. Uncoiling machine;

[0023] 3. Preheater;

[0024] 4. Drive chain track;

[0025] 5. Sheet heating device;

[0026] 6. Suction cup robotic arm;

[0027] 7. Output conveyor belt;

[0028] 8. Waste collection rolls;

[0029] 9. Finalize the template;

[0030] 10. Lower mold servo drive module;

[0031] 11. Linear slide guide rail;

[0032] 12. Lower cavity of the first forming mold;

[0033] 13. Lower cavity of the second forming mold;

[0034] 14. Fixed template;

[0035] 15. Upper servo tensioning electric cylinder;

[0036] 16. Upper cavity of the forming mold;

[0037] 17. Outer frame;

[0038] 18. Place the upper heating plate;

[0039] 19. Lower heating plate;

[0040] 20. Insulation board. Detailed Implementation

[0041] The present invention will be further described in conjunction with the following embodiments.

[0042] Example 1:

[0043] like Figure 1-9 As shown, the dual-station conversion die in-mold cutting thermoforming machine includes an outer enclosure 1, an uncoiler 2 fixedly installed outside the outer enclosure 1, a preheater 3 fixedly installed on the inner edge of the outer enclosure 1, a drive chain 4 installed inside the outer enclosure 1, the output end of the preheater 3 docking with the starting end of the drive chain 4, a sheet heating device 5 installed on the drive chain 4, an in-mold cutting unit docking with the output end of the sheet heating device 5, two suction cup robotic arms 6 fixedly installed on both sides of the in-mold cutting unit, two output conveyor belts 7 correspondingly installed at the ends of the two suction cup robotic arms 6 away from the uncoiler 2, and a waste collection roll 8 fixedly installed on the side of the outer enclosure 1 closest to the output conveyor belts 7.

[0044] This application is mainly used for the molding and production of plastic containers, and can also be used for the production of various food packaging containers and other thermoformed products. First, the electrical equipment is enclosed by an external fence 1. The rolled sheet plastic is cut and transported by an uncoiler 2. Then, the sheet plastic is preheated by a preheater 3 to facilitate the transfer to subsequent processes. The sheet plastic is horizontally transported by a drive chain 4. When the sheet plastic is transported to the sheet heating device 5, it is heated to ensure the plasticity of the sheet plastic for pressing. Then, the sheet plastic continues to move to the in-mold cutting unit for pressing and molding. After the product is formed, it is cut in the mold. Then, the product is sucked out by a suction cup robot 6 and transferred to the corresponding output conveyor belt 7 for transport.

[0045] The forming die in-cut unit includes a lower fixed template 9, on which a lower die servo drive module 10 is fixedly installed. A linear slide rail 11 is fixedly installed above the lower fixed template 9. A first forming die lower cavity 12 and a second forming die lower cavity 13 are slidably installed on the linear slide rail 11. The output end of the lower die servo drive module 10 is connected to the first forming die lower cavity 12 and the second forming die lower cavity 13. An upper fixed template 14 is also fixedly installed above the linear slide rail 11. An upper servo stretching electric cylinder 15 is installed on the upper fixed template 14. The output end of the upper servo stretching electric cylinder 15 extends to the lower part of the upper fixed template 14 and is fixedly installed on the upper forming die upper cavity 16. The upper forming die upper cavity 16 is in a movable forming fit with the first forming die lower cavity 12 and the second forming die lower cavity 13.

[0046] The forming die in-die cutting unit is fixedly installed with the lower die servo drive module 10 via the lower template 9. The lower die servo drive module 10 can drive the first forming die cavity and the second forming die cavity to move horizontally in both directions on the linear slide rail 11. After the first forming die cavity and the upper cavity 16 of the forming die are pressed together, the product is cut. Then, the first forming die cavity is moved horizontally away from the second forming die cavity and the formed product is taken out by the suction cup robot 6. At the same time, the lower die servo drive module 10 drives the second forming die cavity to move below the upper cavity 16 of the forming die for the next round of pressing and forming, reducing the downtime of the equipment. By repeating this process, the working efficiency of the thermoforming machine can be improved.

[0047] The sheet heating device 5 includes an outer frame 17, on which an upper heating plate 18 and a lower heating plate 19 are fixedly installed. An insulation plate 20 is installed between the upper heating plate 18 and the lower heating plate 19. The upper heating plate 18 and the lower heating plate 19 are located above and below the drive chain track 4, respectively.

[0048] The sheet heating device 5 heats the sheet plastic simultaneously above and below the drive chain track 4 without affecting the movement of the sheet plastic.

[0049] This invention improves the in-die cutting unit of the molding die. After the plastic container is formed, one lower die is removed and the product is taken out by a robot. At the same time, another lower die is sent under the upper die to continue pressing and forming. This process is repeated to reduce the downtime of the thermoforming machine and save energy.

[0050] The dimensions of the first and second forming mold cavities are 720mm*540mm, the forming depth is ≤150mm, the sheet width is 400-800mm, and the maximum thickness of the HIPS sheet is 2.0mm.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A dual-station in-mold thermoforming machine, characterized in that: The device includes an outer fence, an uncoiler fixedly installed outside the outer fence, a preheater fixedly installed on the inner edge of the outer fence, a drive chain installed inside the outer fence, the output end of the preheater engaging with the starting end of the drive chain, a sheet heating device mounted on the drive chain, a forming die in-cutting unit mounted on the output end of the sheet heating device, two suction cup manipulators fixedly installed on both sides of the forming die in-cutting unit, two output conveyor belts correspondingly mounted on the ends of the two suction cup manipulators furthest from the uncoiler, and a waste collection roll fixedly installed on the side of the outer fence closest to the output conveyor belts.

2. The dual-station conversion mold in-mold thermoforming machine according to claim 1, characterized in that: The forming die in-cut unit includes a lower fixed template, on which a lower die servo drive module is fixedly installed. A linear slide rail is fixedly installed above the lower fixed template, on which a first forming die lower cavity and a second forming die lower cavity are slidably installed. The output end of the lower die servo drive module is connected to the first forming die lower cavity and the second forming die lower cavity. An upper fixed template is also fixedly installed above the linear slide rail, on which an upper servo stretching electric cylinder is installed. The output end of the upper servo stretching electric cylinder extends below the upper fixed template and is fixedly installed with a forming die upper cavity. The forming die upper cavity is in a movable forming fit with the first forming die lower cavity and the second forming die lower cavity.

3. The dual-station conversion mold in-mold thermoforming machine according to claim 2, characterized in that: The sheet heating device includes an outer frame, on which an upper heating plate and a lower heating plate are fixedly installed. An insulation plate is installed between the upper heating plate and the lower heating plate. The upper heating plate and the lower heating plate are located above and below the drive chain track, respectively.

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