Thermoforming punching and shearing transfer device with three actions per cycle and transfer packing line

Abstract

This invention discloses a thermoforming punching and shearing conveying device and a conveying and packing production line with three actions per die. In this invention, the two lower dies of the thermoforming punching and shearing machine move alternately. The two forming dies share a single upper die shear. The upper and lower dies work together to lock the edges of the sheet material with the formed product, causing part of the sheet material to separate from the edges during forming within the die cavity. This process requires high precision. The upper die has a shearing plate at its bottom, with upper connecting parts at its two ends. Correspondingly, the lower die has a shearing plate at its upper part, with lower connecting parts. The cooperation of the concave and convex upper and lower connecting parts effectively ensures the precision of the upper and lower die operation. Simultaneously, the three-action thermoforming punching and shearing conveying and packing production line can achieve high-speed product transport, meeting the high-speed product transport requirements after thermoforming punching and shearing machine production.

Description

Technical Field

[0001] This invention relates to the field of equipment for preparing plastic containers and caps for food and disposable catering, and particularly to a production line that performs three actions per mold cycle—thermoforming, punching, shearing, stacking, conveying, and packing—at the same station. Background Technology

[0002] For everyday food packaging, fruit and vegetable packaging, and disposable plastic catering containers and lids (including boxes), the use of compressed air thermoforming machines to thermoform and punch-cut sheets is one of the main existing production methods. However, traditional thermoforming machines require six passes per die cycle to complete the material handling and stacking process. Although there are now multi-station thermoforming units that stack and transfer materials per die cycle, the first station is the punch-cutting station. After thermoforming and demolding, the container is still connected to the edges and corners by a conveyor chain. The second station is the receiving station. The material is at the third station. The container at the second station cannot be completely cut off to ensure the product is completely separated from the edges and corners; otherwise, it cannot be transported to the finished product receiving station. During the cutting process, three uncut points are left to connect with the edges and corners, facilitating the transport of the product through the edges and corners to the finished product receiving station. At the finished product receiving station, a robotic arm cuts off the connection points with the edges and corners, stacking the parts on top or bottom. During the transfer process at the first three stations, the edges and corners and the product are not fully cooled before reaching the cutting station, inevitably leading to thermal expansion and contraction, resulting in uneven cutting edges. Furthermore, the overlapping of the points left by the cutting process during unloading inevitably leaves burrs, a technical quality defect.

[0003] The inventor of this invention previously filed a Chinese invention application with publication number CN 111907044 A, which disclosed an in-mold labeling, conveying, and packing production line for a thermoforming machine and a three-action per mold. The cup-making machine has two lower molds that alternately move left and right, overturning the traditional movement of the lower molds in cup-making machines, which can only move up and down and cannot move left and right. Because the two lower molds can alternately move up and down and left and right, when one lower mold has received a label and is at the thermoforming station below the upper mold while producing the product, the other lower mold is at the outside of the connecting support frame receiving the label. This structure allows each lower mold to work normally as soon as it reaches the thermoforming station, eliminating the need for multiple actions of the in-mold labeling robot to enter and place the label, as is the case in traditional processes. This shortens the production time per mold and improves work efficiency. However, the multi-station unit, including the Chinese invention application with publication number CN 111907044 A, has several technical problems that prevent the upper and lower dies from being configured on the same station to complete the hot forming punching and shearing simultaneously. With the continuous progress of society, people's technical quality requirements for products are constantly increasing, as well as the shortage of human resources and the increase in costs. In view of the existing problems, there is an urgent need to provide a technology for a high-efficiency, high-precision and high-load-bearing capacity hot forming punching and shearing conveying and packing production line with three actions per die. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a high-efficiency thermoforming punching and shearing machine with strong load-bearing capacity.

[0005] The objective of this invention is achieved through the following technical solution:

[0006] A thermoforming punching and shearing conveying device with three actions per die is provided, including an upper die mechanism, a sheet conveying structure, an electric furnace, and a lower die mechanism. The upper die mechanism is provided with an upper die, an upper die table, and an upper die table lifting mechanism. The upper die is equipped with a punch pulling and lifting structure. The upper die is installed on the upper die table, and the upper die table is driven to rise and fall by the upper die table lifting mechanism. An upper shearing plate is provided at the bottom of the upper die, and the upper shearing plate is provided with an upper shearing opening. The sheet conveying structure heats the sheet through an electric circuit and passes it through the lower part of the upper shearing opening.

[0007] The lower mold mechanism includes two lower molds, a lifting mold platform, a lower lifting drive device, a sliding pair, and a translation drive device. The two lower molds are driven by the translation drive device to reciprocate along the sliding pair on the lifting mold platform. The lifting mold platform can be driven by the lower lifting drive device to rise or fall vertically.

[0008] Two upper connecting parts are respectively provided on the bottom two sides of the upper shear plate. The upper connecting parts on both sides are staggered with the center line of the translational movement direction of the lower die. Each lower die is provided with a lower shearing opening that works in conjunction with the upper shearing opening. A lower die base is provided at the bottom of the lower die. Lower connecting parts are provided on both sides of each lower die corresponding to the upper connecting parts on both sides of the upper die. The two lower connecting parts on the right side of the lower die on the left and the two lower connecting parts on the left side of the lower die on the right are located on the same straight line. When the upper die and the lower die lock the die to form and punch the sheet, the upper connecting parts of the upper die are docked and positioned with the lower connecting parts of the lower die that is locking the die.

[0009] Preferably, the sliding pair includes a translation guide rail and a load-bearing translation sliding assembly. The translation guide rail consists of a track and a slider. Load-bearing translation sliding assemblies are provided on both outer sides of the translation guide rail. The load-bearing translation sliding assembly includes a support groove, multiple rolling elements, and a sliding support plate. The multiple rolling elements are rotatably installed inside the support groove and arranged in sequence. The sliding support plate is provided with a ridge, and the ridge of the sliding support plate slides in contact with the rolling elements in the support groove.

[0010] Preferably, each lower mold is equipped with a demolding motion box, which contains multiple mold bottom ejector rods, ejector rod connecting plates, and guide rods. The guide rods are vertically installed in the demolding motion box through the ejector rod connecting plates. Each mold bottom ejector rod corresponds to one forming cavity of the lower mold. The lower end of the mold bottom ejector rod is fixed to the upper end of the ejector rod connecting plate, and the mold bottom is located at the bottom of the forming cavity. Each mold bottom ejector rod is equipped with a cooling channel. One end of the cooling channel opens towards the forming cavity, and the other end is connected to a cooling nozzle. The cooling nozzle is connected to an external cooling device through a pipe.

[0011] The lifting mold table is equipped with a demolding cylinder. During demolding, the telescopic rod of the demolding cylinder extends upward and pushes the ejector pin connecting plate upward. The ejector pin connecting plate drives the bottom ejector pin to rise, moving the molded product in the molding cavity upward and separating it from the inner wall of the molding cavity.

[0012] Preferably, the demolding motion box of each lower mold is installed on a translational sliding platform, and a translational connector is provided between the two translational sliding platforms. The two ends of the translational connector are respectively connected to the two translational sliding platforms. A slider is fixed at the bottom of the translational sliding platform, the slider slides on the guide rail, the guide rail is fixed to the lower lifting mold platform, and clutch traction pins that connect to the counterweight balance box are provided at both ends of the translational sliding platform.

[0013] Preferably, the rolling element is a cylindrical roller, with both ends of the roller rotatably mounted on the two side walls of the support rail.

[0014] Preferably, an assist-lifting buffer device is provided below the lifting platform. The assist-lifting buffer device includes a lifting support frame, a driven component, a lifting component, and a lifting drive component.

[0015] The lifting drive assembly includes a drive source, a transmission assembly, and a lifting drive shaft. The drive source drives the lifting drive shaft to rotate through the transmission assembly. Both sides of the lifting drive shaft are provided with drive bevel gears.

[0016] The driven component includes a transmission rod bearing housing and a transmission rod. The transmission rod is rotatably mounted on the lifting support frame via the transmission rod bearing housing. Both ends of the transmission rod are provided with transmission bevel gears. The transmission bevel gear at one end of the transmission rod meshes with the drive bevel gear of the lifting drive shaft, and the other end is connected to the lifting component.

[0017] The lifting assembly includes a lifting bevel gear, a lifting rack, and a lifting gear. The lifting gear and the lifting bevel gear are mounted on the same shaft. The lifting bevel gear meshes with one end of the transmission rod to drive the bevel gear. The lifting gear meshes with the lifting rack to drive the transmission. A buffer is installed at the upper end of the lifting rack.

[0018] Another objective of this invention is to overcome the shortcomings of the prior art and provide a highly efficient and rapid production and conveying three-action thermoforming punching, shearing, conveying and packing production line per mold.

[0019] Another objective of this invention is achieved through the following technical solution:

[0020] The thermoforming punching, shearing, conveying, and packing production line, which consists of the aforementioned thermoforming punching, shearing, and conveying structure with three actions per die, a receiving conveyor, two picking and unloading conveying robots, a transfer conveying robot, a single-row whole-line stacking lateral conveyor, a limiting receiving and quantitative conveying device, a layer-by-layer receiving and quantitative conveying device, and a packing device. The two picking and unloading conveying robots are a left picking and unloading conveying robot and a right picking and unloading conveying robot.

[0021] The left and right unloading conveyor arms respectively transport the formed products from the two lower dies of the thermoforming punching and shearing machine to the two stacking bins of the receiving conveyor device. The intermediate conveyor arm transfers the products from the stacking bins to the single-row whole-strip stacking lateral conveyor device. The single-row whole-strip stacking lateral conveyor device sends the stacked products to the limiting receiving and positioning conveyor device. The limiting receiving and positioning conveyor device flips the products and sends them to the layered receiving and quantitative conveyor device. The layered receiving and quantitative conveyor device sends multiple rows of products layer by layer into the carton of the packing device.

[0022] Preferably, each cycle consists of three actions as follows:

[0023] First action: One of the lower dies rises to the point where the upper and lower parts are precisely aligned and positioned before the blanking material contacts the sheet. At the same time, the upper die completes the stretching and thermoforming punching, leaving the product in the forming cavity. The edges and corners of the sheet separate from the product, completing the first action.

[0024] The following actions are performed synchronously within the time period of the first action:

[0025] (1) The demolding cylinder at the product unloading station moves to lift the ejector pin connecting plate. The ejector pin connecting plate drives the bottom ejector pin to rise, causing the product to detach from the inner wall of the molding cavity. When the product rises, the unloading conveyor arm picks up the material, and the demolding cylinder descends to reset.

[0026] (2) The balance box located on the outside of the unloading material on the balance placement seat disengages from the clutch traction pin of the translation sliding platform;

[0027] (3) The material handling robot on the other side lowers the stacked material and arrives above the unloading station to wait before the other lower mold moves to the unloading station;

[0028] The second action: After completing the thermoforming punching and shearing, the lower die descends, and the lower shearing edge separates from the edge of the sheet;

[0029] The following actions are performed simultaneously during the time period of the second action:

[0030] (1) The clutch traction pin of the sliding platform below the lower mold after unloading is connected to the balance box placed on the balance box placement seat;

[0031] (2) The unloading and conveying robot that has completed the material handling has completely removed the product from the lower shearing surface of the lower mold;

[0032] (3) The unloading and conveying robot on the other side rises to the transfer station after stacking the materials;

[0033] The third action: The lower mold carrying the product moves outward to the finished product unloading station, while the other lower mold simultaneously arrives at the forming standby station to achieve alternating and interchangeable stations;

[0034] The following actions shall be performed simultaneously during the time period of the third action:

[0035] (1) Sheet material drive structure completes the sheet material thermoforming station;

[0036] (2) The material handling robot that has completed material handling is moved to the position above the product unloading standby station and waits for operation;

[0037] (3) Another unloading and conveying robot is moved horizontally to the transfer station;

[0038] This completes the final action of each cycle, and the process is repeated until the machine stops.

[0039] Preferably, the material receiving and conveying device includes two parallel conveyors. Each conveyor is equipped with a frame, a first drive device, a sliding seat, a sliding platform, a second drive device, and a receiving and stacking box. The sliding seat is slidably mounted on the frame via a first guide rail and is driven by the first drive device to move longitudinally along the first guide rail. The sliding platform is disposed on the sliding seat, and the receiving and stacking box is slidably disposed on the sliding platform via a second guide rail and is driven by the second drive device to move laterally along the second guide rail.

[0040] Preferably, the space above the two conveyors serves as the left sampling station, the left transfer station, the left receiving and waiting station, the left receiving station, the shared unloading station, the right receiving station, the right receiving and waiting station, the right transfer station, and the right sampling station.

[0041] Preferably, a finished product unloading device is also provided. The finished product unloading device includes a transmission drive device, a moving seat, a pushing device, and a discharge support device. One end of the transmission machine is provided with a feeding station located on the discharge side of the packing device, and the other end is provided with a discharge station. The moving seat moves between the feeding station and the discharge station under the action of the transmission drive device. A pushing device is provided on one side of the discharge station, and a discharge support device is provided on the other side of the discharge station. The pushing device includes a pushing support frame, a first translational pushing device, a pushing connecting seat, and a pushing cylinder. The first translational pushing device is installed on the pushing support frame and drives the pushing connecting seat to move. One end of the pushing cylinder is installed on the pushing connecting seat, and the other end faces the discharge support device.

[0042] The beneficial effects of this invention are:

[0043] (1) Existing thermoforming machines use one upper die and one lower die. Since the upper and lower dies do not move horizontally but only vertically, normal operation can be achieved simply by manually calibrating the horizontal position during regular operation. However, the thermoforming punching and shearing machine of the present invention has two lower dies that move alternately. The shearing openings of the two forming dies of the present invention share one upper die shearing opening. The upper and lower dies work together to lock the edges and corners of the sheet material with the forming product and cut them together, so that part of the sheet material is formed in the forming cavity and separates from the edges and corners of the sheet material. This process requires high precision. The bottom of the upper die of the present invention is provided with a shearing plate, and the bottom two ends of the shearing plate are provided with upper connecting parts. Correspondingly, the upper part of the lower die is provided with a shearing plate, and the shearing plate is provided with a lower connecting part. The cooperation of the upper and lower connecting parts, one concave and one convex, can effectively ensure the precision of the cooperation between the upper and lower dies.

[0044] (2) In order to minimize the translational alternation stroke, the present invention provides an upper and lower mating parts with concave and convex shapes that extend outward from the lower mold to the outside of the sheet material track. The upper mating parts on both sides are staggered with the movement direction of the lower mold as the center line. The two lower molds are respectively provided with lower mating parts on both sides of the upper mold. In this way, two sets of lower mold bases are connected inside and outside. When each corresponds to the upper mold, the non-matching mating parts can avoid each other, which meets the high precision requirements of the locking mold and shearing and minimizes the alternation stroke of the two sets of forming molds.

[0045] (3) The lower part is set as the male part, and the tail end is set as a tapered shape to approach the locking mold and ensure the required accuracy before entry. Moreover, after the accuracy correction is completed, the diameter of the lower end of the male part is reduced to prevent the limit stroke from being too long and increasing the lifting resistance. At the same time, it can reduce the wear of the male and female mating limit.

[0046] (4) The present invention provides load-bearing translational sliding components on both outer sides of the translational guide rail of the lifting mold table. The load-bearing translational sliding components include a support groove rail, multiple rolling elements, and a sliding support plate. The multiple rolling elements are rotatably installed inside the support groove rail and arranged sequentially. The sliding support plate is provided with a protruding strip, which slides in contact with the rolling elements in the support groove rail. Compared with the prior art, the present invention adds a load-bearing translational sliding component to the lifting mold table. The load-bearing translational sliding component utilizes the rolling elements to carry heavy loads in a straight line, especially capable of handling the punching and shearing forces of tens to hundreds of tons of sheet material edges separating from the product during upper and lower mold locking and shearing. The present invention solves the problem that the prior art does not have a clutch linear sliding component capable of withstanding tens to hundreds of tons, ensuring the normal operation of the equipment.

[0047] (5) A demolding motion box is installed at the bottom of the lower mold base. The demolding motion box is equipped with multiple mold bottom ejector rods, ejector rod connecting plates, and guide rods. The guide rods are vertically installed in the demolding motion box through the ejector rod connecting plates. Multiple mold bottom ejector rods are set on the ejector rod connecting plates, and one mold bottom ejector rod corresponds to one molding cavity of the lower mold. The lifting mold platform is equipped with a demolding cylinder. The telescopic rod of the demolding cylinder extends upward to push the ejector rod connecting plate upward. The ejector rod connecting plate drives the mold bottom ejector rod to rise, moving the molded product in the molding cavity upward. The product is separated from the mold cavity wall, ensuring that the suction cup holds the product smoothly and without obstruction. Each mold bottom ejector rod is equipped with a cooling channel. One end of the cooling channel opens towards the molding cavity, and the other end is connected to the cooling nozzle. The cooling nozzle is connected to an external cooling device through a pipe. Compared with the prior art, the present invention can spray cold air into the molding cavity through the cooling channel while the mold bottom ejector rod rises with the ejector rod connecting plate, so that the product in the molding cavity of the lower mold can be quickly cooled and shaped, and easily separated from the molding cavity for demolding. This invention solves the problems of the moving space of the mold bottom ejector rod and the smooth operation of the demolding cooling assembly and the cable carrier with electric wires, air and water pipes during alternating translation by using a demolding motion chamber.

[0048] (6) The forming conveying and packing unit includes a thermoforming punching and shearing machine, a receiving conveying device, a left unloading conveying robot, a right unloading conveying robot, a transfer conveying robot, a single row whole strip stacking lateral conveying device, a limiting receiving quantitative conveying device, a layer receiving quantitative conveying device and a packing device. Compared with the prior art, the present invention not only improves the lifting mold table load-bearing effect of the thermoforming punching and shearing machine and the smooth sliding of the lower mold, but also enables efficient automatic stacking, conveying and packing of products when combined with other equipment.

[0049] (7) The present invention solves the problem of smooth operation of the demolding cooling component when the lower mold is shifting alternately by using a demolding motion chamber, and solves the problem that ordinary guide rails cannot bear the weight of tens to hundreds of tons and slide smoothly by using a heavy-duty clutch translation sliding component.

[0050] (6) The thermoforming punching, shearing, conveying and packing production line of the present invention, which uses the aforementioned thermoforming machine, can operate better and overcome the problem of the translation guide rail on the lifting mold table jamming or even being damaged due to excessive load. At the same time, the present invention uses two stacking boxes of the receiving and conveying device combined with the left and right picking and unloading conveying robot to receive and convey materials alternately from left to right, which greatly improves the conveying efficiency and solves the problem of the lack of high-speed stacking and conveying equipment due to the high-speed production of three actions per mold, thus subverting the traditional technology and solving the above-mentioned technical quality defects.

[0051] (8) This invention combines two stacked material boxes of the receiving and conveying device with a left-hand unloading conveying robot and a right-hand unloading conveying robot to realize alternating receiving and conveying of materials from left and right, which greatly improves the conveying efficiency and solves the problem that the material receiving and unloading speed of a single robot cannot keep up due to the high speed of three actions per cycle. The receiving and conveying device is equipped with a receiving and unloading box on each side, which moves back and forth longitudinally between each workstation, and at the same time slides laterally to alternate receiving and unloading materials and to the sampling inspection station, including sliding to the standby station. Attached Figure Description

[0052] The invention will be further illustrated with reference to the accompanying drawings, but the contents of the drawings do not constitute any limitation on the invention.

[0053] Figure 1 This is a schematic diagram of an embodiment of the thermoforming punching and shearing conveying device of the present invention, which involves three actions per mold cycle.

[0054] Figure 2 This is a schematic diagram of the lower mold mechanism according to an embodiment of the present invention.

[0055] Figure 3 This is a schematic diagram of the load-bearing translational sliding component structure according to an embodiment of the present invention.

[0056] Figure 4 This is another schematic diagram of the lower mold mechanism according to an embodiment of the present invention.

[0057] Figure 5 This is a schematic diagram of the lower mold and demolding motion box according to an embodiment of the present invention.

[0058] Figure 6 This is another schematic diagram of the lower mold and demolding motion box according to an embodiment of the present invention.

[0059] Figure 7 This is a schematic diagram of an embodiment of the thermoforming punching, shearing, conveying and packing production line of the present invention, which involves three actions per mold.

[0060] Figure 8 This is a schematic diagram of a material receiving and conveying device according to an embodiment of the present invention.

[0061] Figure 9 This is a schematic diagram of a material handling and unloading conveyor robot according to an embodiment of the present invention.

[0062] Figure 10 This is a schematic diagram of a transfer robot according to an embodiment of the present invention.

[0063] Figure 11 This is a schematic diagram of a conveyor packing unit according to an embodiment of the present invention.

[0064] Figure 12 This is a schematic diagram of a finished product unloading device according to an embodiment of the present invention.

[0065] Figure 13 This is a schematic diagram of the structure of an assistive lifting and buffer device according to an embodiment of the present invention.

[0066] Figure 14 This is a schematic diagram of a punch lifting and lowering structure according to an embodiment of the present invention.

[0067] Figure 15 This is another schematic diagram of a thermoforming punching and shearing conveying device with three actions per mold according to an embodiment of the present invention.

[0068] exist Figures 1 to 15 This includes:

[0069] A. Thermoforming punching and shearing machine; B. Material receiving and conveying device; C. Left-hand unloading conveying robot; D. Right-hand unloading conveying robot; E. Transfer conveying robot; F. Single-row whole-line stacking lateral conveying device; G. Limiting material receiving and quantitative conveying device; H. Layer-by-layer material receiving and quantitative conveying device; I. Packing device; J. Finished product unpacking device.

[0070] A1 electric furnace, A1-1 sheet conveying structure

[0071] A2 Upper mold, A2-1 Upper shearing plate, A2-2 Upper mating part, A2-3 Upper shearing,

[0072] A3 Lower mold, A3-1 Lower mold base, A3-2 Lower connecting piece, A3-3 Lower shearing notch, A4 Lifting mold table

[0073] A5 lower lifting drive device

[0074] Translation drive unit: A6-1 motor, A6-2 synchronous pulley, A6-3 synchronous belt;

[0075] A7 Load-bearing Translational Sliding Assembly: A7-1 Support Rail, A7-2 Rolling Components, A7-3 Sliding Support Plate, A7-4 Raised Strip;

[0076] A8 Demolding Motion Box: A8-1 Mold Bottom Ejector Rod, A8-2 Cooling Channel, A8-3 Cooling Nozzle, A8-4 Ejector Rod Connecting Plate, A8-5 Guide Rod, A8-6 Demolding Cylinder;

[0077] A9-1 Translational sliding platform, A9-2 slider, A9-3 track, A9-4 clutch traction pin, A10 counterweight balance box.

[0078] Punch lifting structure: A11-1 punch, A11-2 lifting rod, A11-3 lifting rack, A11-4 lifting transmission gear, A11-5 lifting drive motor, A11-6 lifting connecting frame;

[0079] A12 Upper mold table lifting mechanism, A13 Upper mold table

[0080] Assisted lifting and buffer device: A-1 Lifting support frame, A-2 Transmission rod bearing seat, A-3 Transmission rod, A-4 Transmission bevel gear, A-5 Drive source, A-6 Lifting rack, A-7 Lifting gear, A-8 Lifting drive shaft, A-9 Drive bevel gear, A-10 Buffer, A-11 Drive rack, A-12 Transmission gear, A-13 Lifting bevel gear.

[0081] Material receiving and conveying device: B1 frame, B2 first drive unit, B3 sliding seat, B4 sliding platform, B5 second drive unit, B6 receiving and stacking box, B7-1 left sampling station, B7-2 left transfer station, B7-3 left receiving and waiting station, B7-4 left receiving station, B7-5 shared unloading station, B7-6 right receiving station, B7-7 right receiving and waiting station, B7-8 right transfer station, B7-9 right sampling station;

[0082] Finished product unloading device: J1 transmission drive device, J2 moving seat, J3 pushing device, J3-1 feeding station, J3-2 discharging station, J3-3 pushing support frame, J3-4 first translation pushing device, J3-5 pushing connecting seat, J3-6 pushing cylinder, J4 discharging support device. Detailed Implementation

[0083] The present invention will be further described in conjunction with the following embodiments.

[0084] Example 1

[0085] refer to Figures 1 to 15 The thermoforming punching and shearing conveying device of this embodiment, which has three actions per die, includes an upper die mechanism, a sheet conveying structure A1-1 (the sheet conveying structure is a commonly used device in ordinary thermoforming machines, and those skilled in the art should understand it clearly even if its specific structure is not shown in the figure), an electric furnace A1, and a lower die mechanism. The upper die mechanism is provided with an upper die A2, an upper die table A13, and an upper die table lifting mechanism A12. The upper die A2 is equipped with a punch lifting and lowering structure, which includes multiple punches A11-1, multiple lifting rods A11-2, and a lifting drive device. One punch A11-1 is fixed to the lower end of one lifting rod A11-2, and the multiple lifting rods A11-2 are driven to rise and fall by the lifting drive device. In this embodiment, the upper mold is provided with multiple through holes for the punch A11-1 to pass through. The punch A11-1 passes through the aforementioned through holes and is driven to rise and fall by the lifting rod A11-2. The lifting drive device includes a lifting rack A11-3, a lifting transmission gear A11-4, and a lifting drive motor A11-5. The lifting gear is mounted on the rotating shaft of the lifting drive motor A11-5 and rotates with the rotating shaft. The lifting gear meshes with the lifting rack A11-3 for transmission. The lifting connecting frame A11-6 is fixedly connected to the lifting rack A11-3. Multiple lifting rods A11-2 are fixedly connected to the lifting connecting frame A11-6. When the sheet material needs to be thermoformed, the upper and lower dies lock, and the pulling drive device causes multiple punches A11-1 to descend. During the descent process, the punches A11-1 press the heated and softened sheet material into the forming cavity of the lower die to make the sheet material into the specified shape. After the formed sheet material cools and hardens, it becomes the finished product.

[0086] The upper die A2 is mounted on the upper die platform A13. The upper die platform A13 is driven to lift and lower A12 by the upper die platform lifting mechanism. The bottom of the upper die A2 is provided with an upper shear plate A2-1, which has an upper shear opening A2-2. The sheet material conveying structure A1-1 heats the sheet material through an electric circuit and then passes it under the upper shear opening A2-3. The conveyor chain of the sheet material conveying structure A1-1, located outside the lower die A3, is driven by a motor to heat the sheet material through the electric furnace A1. The sheet material conveying chains on both sides, driven by the motor, carry the sheet material stepping through the area under the upper shear plate A2-1 of the upper die A2.

[0087] The lower mold mechanism is equipped with two lower molds A3, a lifting mold platform A4, a lower lifting drive device A5, a sliding pair, and a translation drive device. The two lower molds A3 are driven by the translation drive device to slide on the lifting mold platform A4 and reciprocate along the sliding pair. The lifting mold platform A4 can be driven to rise or fall by the lower lifting drive device A5.

[0088] Two upper connecting pieces A2-2 are respectively provided on the bottom sides of the upper shear plate A2-1 of the upper die A2. The upper connecting pieces A2-2 on both sides are offset from the center line of the translational movement direction of the lower die. Each lower die A3 is provided with a lower shear plate A3-3 that works in conjunction with the upper shear plate A2-2. The bottom of the lower die A3 is provided with a lower die base A3-1. The two sides of each lower die A3 are respectively provided with lower connecting pieces A3-2 corresponding to the upper connecting pieces A2-2 on both sides of the upper die A2. The two lower connecting pieces A3-2 on the right side of the lower die on the left and the two lower connecting pieces A3-2 on the left side of the lower die on the right are located on the same straight line. The four lower connecting pieces are located on the same straight line, which not only meets the accuracy requirements of co-clamping and shearing, but also shortens the movement distance and makes the structure more compact. When the upper die and one lower die clamp and form and punch and shear the sheet, the upper connecting piece A2-2 of the upper die is docked and positioned with the lower connecting piece A3-2 of the lower die that is clamping. In this embodiment, the upper connecting piece A2-2 is a female connecting piece with a concave hole, and the lower connecting piece A3-2 is a male connecting piece. The upper connecting piece A2-2 and the lower connecting piece A3-2 are male and female respectively. In this embodiment, the lower connecting piece A3-2 is provided with a positioning post, and the upper connecting piece A2-2 is provided with an insertion hole that mates with the positioning post.

[0089] The lower mold base A3-1 has a concave shape at one end and a convex fixed position at the other end. The concave lower connecting piece A3-2 corresponds to the upper connecting piece A2-2 on the outer side of the upper shear plate A2-1. The other two inner upper connecting pieces A2-2 correspond to the two lower connecting pieces A3-2 on the convex position of the other lower mold base A3-1. This forms two lower molds A3 with lower shears A3-3 alternately sharing one upper mold A3 with an upper shear A2-3. The upper shear A2-3 and lower shear A3-3 are positioned and cooperate through the mating of the upper connecting piece A2-2 and the lower connecting piece A3-2. The cooperation of the upper shear A2-3 and the lower shear A3-3 can separate the formed product from the edge of the sheet material, thus minimizing the translational movement distance of the lower mold and saving time.

[0090] It should be noted that the upper mold mechanism, lower mold A3, electric furnace A1, lifting mold platform A4, lower lifting drive device A5, and translation drive device are all prior art. The lower lifting drive device A5 can be composed of a cylinder, hydraulic cylinder, motor, and rack, or it can be a multi-tonnage, high-amplitude lifting device with a lever-pull structure disclosed in Chinese patent application CN111847338A. The translation drive device can be an electric lead screw or composed of a motor and transmission components. Furthermore, the upper mold mechanism, lower mold A3, electric furnace A1, lifting mold platform A4, lower lifting drive device A5, and translation drive device can also adopt related technologies disclosed in Chinese patent applications with publication numbers CN 111907044 A, CN111847338A, and CN216127617U, which will not be elaborated upon here but should be clearly understood by those skilled in the art.

[0091] In this embodiment, the lower mold A3 is fixed to the lower mold base A3-1 with concave and convex shapes at both ends. The lower mold base A3-1 is fixed to the demolding motion box A8. The demolding motion box A8 is fixed to the translation sliding platform A9-1. The slider A9-2 and the sliding support plate A7-3 are fixed on the back of the translation sliding platform A9-1. The slider A9-2 is slidably mounted on the track A9-3 on the lifting mold platform A4. The sliding support plate A7-3 is slidably mounted on the rolling element A7-2 installed on the support track A7-1. The lifting mold platform A4 is installed on the lifting drive device and is driven by the lifting drive device to rise and fall vertically. A translation drive device is installed on the translation lifting device, which includes a motor A6-1, a synchronous pulley A6-2, and a synchronous belt A6-3. The synchronous pulley A6-2 is rotatably mounted at both ends of the lifting mold platform A4, and the synchronous belt A6-3 is mounted on the synchronous pulley A6-2. The motor A6-1 drives the synchronous pulley A6-2 and the synchronous belt A6-3 to rotate. If necessary, a transmission wheel and a transmission belt can also be provided between the motor A6-1 and the synchronous pulley A6-2. The synchronous belt A6-3 is connected to the translation sliding platform A9-1 so that the translation sliding platform A9-1 moves synchronously with the synchronous belt A6-3. The two lower molds are driven by the translation drive device to move along the track A9-3 and the load-bearing translation sliding assembly A7, and alternately slide between the mold waiting position and the unloading waiting position.

[0092] Specifically, in the prior art, a thermoforming machine with one upper die A2 and one lower die A3 moves only vertically because the upper and lower dies do not move horizontally. Therefore, it can work normally simply by manually calibrating the horizontal position during formal operation. However, in the thermoforming punching and shearing machine A of the present invention, the two lower dies A3 move alternately. The shearing openings of the two lower dies A3 of the thermoforming punching and shearing machine A of the present invention share the shearing opening of one upper die A2. The matching accuracy of the upper and lower die shearing openings is required. Otherwise, the upper and lower dies will work together to form the sheet and cut the shearing opening.

[0093] This embodiment has the following improvements over the prior art: Load-bearing translational sliding components A7 are provided on both outer sides of the translational guide rail. The translational guide rail consists of a slider A9-2 and a track A9-3. The load-bearing translational sliding component A7 includes a support groove A7-1, multiple rolling elements A7-2, and a sliding support plate A7-3. The multiple rolling elements A7-2 are rotatably mounted inside the support groove A7-1 and arranged sequentially. The sliding support plate A7-3 is provided with a protrusion A7-4, which is embedded in the support groove A7-1 and slides in contact with the rolling elements A7-2 within the support groove A7-1. In this embodiment, the rolling element A7-2 is configured as a cylindrical roller. The two ends of the cylindrical roller are rotatably mounted on the two side walls of the support rail A7-1. However, it should be noted that the cylindrical roller is a preferred method in this embodiment, but not the only method. Rolling elements A7-2 with different shapes but capable of cooperating with the sliding plate to achieve the function of load-bearing sliding are all within the scope of protection claimed by this invention.

[0094] In this embodiment, the lifting mold platform A4 is also equipped with a translational sliding platform A9-1. The demolding motion box A8 is detachably installed on the translational sliding platform A9-1. A slider A9-2 is fixed at the bottom of the translational sliding platform A9-1. The slider A9-2 slides on the guide rail A9-3, which is fixed to the lower lifting mold platform A4. Both ends of the translational sliding platform A9-1 are equipped with clutch traction pins A9-4 that mate with the insertion holes A10-1 of the counterweight balance box A10. By setting up the translational sliding platform A9-1, the two lower molds A3 or the demolding motion box A8 below the lower mold A3 can be detachably installed on the translational sliding platform A9-1, thus allowing for quick replacement of the lower molds A3 to produce products of different types and specifications.

[0095] Thermoforming machines use an electric furnace (A1) to heat the sheet material, softening it. Then, upper molds (A2) and lower molds (A3) lock the sheet into the shape of disposable cups, bowls, or lids. The product is initially at a high temperature and needs cooling before demolding. Current technology, due to its complex structure, makes it difficult to incorporate structures or equipment to accelerate cooling, forcing it to rely on natural cooling. This not only results in longer cooling times but also requires further improvement in product shaping. (Reference) Figure 6 In this embodiment, a demolding motion box A8 is installed at the bottom of the lower mold base A3-1. The demolding motion box A8 is equipped with multiple mold bottom ejector rods A8-1, ejector rod connecting plate A8-4, and guide rods A8-5. The guide rods A8-5 pass through the ejector rod connecting plate A8-4 and are vertically installed in the demolding motion box A8. The multiple mold bottom ejector rods A8-1 are set on the ejector rod connecting plate A8-4, and each mold bottom ejector rod A8-1 corresponds to one forming cavity of the lower mold A3. Each mold bottom ejector rod A8-1 is equipped with a cooling channel A8-2. One end of the cooling channel A8-2 opens towards the forming cavity, and the other end is connected to the cooling nozzle A8-3. The cooling nozzle A8-3 is connected to an external cooling device through a pipe. The lifting mold platform A4 is equipped with a demolding cylinder A8-6. During demolding, the telescopic rod of the demolding cylinder A8-6 extends upward, pushing the ejector pin connecting plate A8-4 upward. The ejector pin connecting plate A8-4 then drives the mold bottom ejector pin A8-1 to rise, moving the molded product in the molding cavity upward for demolding. By setting up a demolding motion box A8 to provide movement space for the mold bottom ejector pin A8-1 and installation space for the cooling nozzle A8-3, the technical problem of difficulty in installing cooling devices or equipment in existing technologies is solved, enabling rapid cooling and demolding of the product.

[0096] refer to Figure 7The thermoforming punching, shearing, conveying, and packing production line, which consists of three actions per die, includes the aforementioned thermoforming punching machine A, receiving conveyor B, left unloading conveyor C, right unloading conveyor D, transfer conveyor E, single-row whole-line stacking lateral conveyor F, limiting receiving quantitative conveyor G, layer-by-layer receiving quantitative conveyor H, and packing device I. Specifically, the left unloading conveyor C and right unloading conveyor D respectively convey the shaped products from the two lower dies A3 of the thermoforming punching machine A to the two stacking bins B6 of the receiving conveyor B. The transfer conveyor E transfers the products from the stacking bins B6 to the single-row whole-line stacking lateral conveyor F. The single-row whole-line stacking lateral conveyor F sends the stacked products to the limiting receiving positioning conveyor. The limiting receiving positioning conveyor flips the products and sends them to the layer-by-layer receiving quantitative conveyor H. The layer-by-layer receiving quantitative conveyor H then sends multiple rows of products layer by layer into the cartons of the packing device I.

[0097] The three actions per mold in the thermoforming punching, shearing, conveying, and packing production line are as follows:

[0098] First action: One of the lower dies rises to the point where the upper and lower parts are precisely aligned and positioned before the blanking material contacts the sheet. At the same time, the upper die completes the stretching and thermoforming punching, leaving the product in the forming cavity. The edges and corners of the sheet separate from the product, completing the first action.

[0099] The following actions are performed synchronously within the time period of the first action:

[0100] (1) The demolding cylinder at the product unloading station moves to lift the ejector pin connecting plate. The ejector pin connecting plate drives the bottom ejector pin to rise, causing the product to detach from the inner wall of the molding cavity. When the product rises, the unloading conveyor arm picks up the material, and the demolding cylinder descends to reset.

[0101] (2) The balance box located on the outside of the unloading material on the balance placement seat disengages from the clutch traction pin of the translation sliding platform;

[0102] (3) The material handling robot on the other side lowers the stacked material and arrives above the unloading station to wait before the other lower mold moves to the unloading station;

[0103] The second action: After completing the thermoforming punching and shearing, the lower die descends, and the lower shearing edge separates from the edge of the sheet;

[0104] The following actions are performed simultaneously during the time period of the second action:

[0105] (1) The clutch traction pin of the sliding platform below the lower mold after unloading is connected to the balance box placed on the balance box placement seat;

[0106] (2) The unloading and conveying robot that has completed the material handling has completely removed the product from the lower shearing surface of the lower mold;

[0107] (3) The unloading and conveying robot on the other side rises to the transfer station after stacking the materials;

[0108] The third action: The lower mold carrying the product moves outward to the finished product unloading station, while the other lower mold simultaneously arrives at the forming standby station to achieve alternating and interchangeable stations;

[0109] The following actions shall be performed simultaneously during the time period of the third action:

[0110] (1) Sheet material drive structure completes the sheet material thermoforming station;

[0111] (2) The material handling robot that has completed material handling is moved to the position above the product unloading standby station and waits for operation;

[0112] (3) Another unloading and conveying robot is moved horizontally to the transfer station;

[0113] This completes the final action of each cycle, and the process is repeated until the machine stops.

[0114] It should be noted that the pressing device is located below the upper die and above the sheet, and its structure and working principle are existing technologies. The docking structure and method of the translational sliding platform below the lower die and the balance box are also existing technologies; please refer to the existing technology disclosed in publication number CN111907044A. A pin is provided on the bottom of the lower die near the balance counterweight box (i.e., the balance box of this invention), and a connecting plate is connected to the side of the balance counterweight box near the lower die. The front end of the connecting plate has a pin hole, into which the pin of the lower die can be inserted. Those skilled in the art should clearly understand the aforementioned existing technologies, their working principles, and processes. For the three actions involving the workstation, which is a spatial location where the equipment can perform designated work, its position can be appropriately adjusted according to the position of each piece of equipment. Given that the positions of each component of this invention are determined, the position of the workstation can be determined based on its functional position.

[0115] It should be noted that the orientations mentioned in this embodiment are based on the drawings and are not limited to the actual layout orientations. In practice, the left and right orientations can be interchanged.

[0116] Example 2

[0117] refer to Figure 13 In this embodiment, a lifting and buffering device is provided below the lifting platform. The lifting and buffering device includes a lifting support frame A-1, a driven component, a lifting component, and a lifting drive component. The lifting drive component drives the lifting component to lift and lower through the driven component. A buffer A-10 is provided on the top of the lifting component.

[0118] The lifting drive assembly includes a drive source A-5, a transmission assembly A-11, and a lifting drive shaft A-8. In this embodiment, the drive source A-5 is a motor, and the transmission assembly A-11 is a gear set. The drive source A-5 drives the lifting drive shaft A-8 to rotate via the transmission assembly A-11. Specifically, the drive source A-5 can be an electric actuator, a motor, or other device capable of rotating the lifting drive shaft A-8. When the drive source A-5 is a cylinder, the transmission assembly consists of a drive rack A-11 and a transmission gear A-12. The drive rack A-11 is mounted on the extension rod of the cylinder, and the transmission gear A-12 is mounted on the lifting drive shaft A-8, meshing with the drive rack A-11. To achieve transmission with the driven assembly, drive bevel gears A-9 are provided on both sides of the lifting drive shaft A-8.

[0119] The driven assembly includes a transmission rod bearing seat A-2 and a transmission rod A-3. The transmission rod A-3 is fixed to the lifting support frame A-1 via the transmission rod bearing seat A-2. Transmission bevel gears A-4 are respectively provided at the upper and lower ends of the transmission rod A-3. One end of the transmission bevel gear of the transmission rod A-3 meshes with the drive bevel gear A-9 of the lifting drive shaft 28, and the other end is connected to the lifting assembly. In this embodiment, it meshes with the lifting bevel gear of the lifting assembly. The lifting assembly includes a lifting bevel gear A-12, a lifting rack A-6, and a lifting gear A-7. Lifting gear A-7 and lifting bevel gear A-13 are mounted on the same shaft. Lifting gear A-7 meshes with the lifting rack A-6, and a buffer A-10 is installed at the upper end of the lifting rack A-6.

[0120] Example 3

[0121] To improve work efficiency and facilitate the movement of the receiving box to different workstations, the receiving conveyor device B includes two parallel conveyors. Each conveyor is equipped with a frame B1, a first drive device B2, a sliding seat B3, a sliding platform B4, a second drive device B5, and a receiving box B6. The sliding seat B3 is slidably mounted on the frame B1 via a first guide rail and is driven by the first drive device B2 to move longitudinally along the first guide rail. The sliding platform B4 is located on the sliding seat B3. The receiving box B6 is slidably mounted on the sliding platform via a second guide rail and is driven by the second drive device B5 to move laterally along the second guide rail. The line of the second guide rail is perpendicular to the line of the first guide rail. Above the two conveyors are spaces designated as the left sampling station B7-1, left transfer station B7-2, left receiving and waiting station B7-3, left receiving station B7-4, shared unloading station B7-5, right receiving station B7-6, right receiving and waiting station B7-7, right transfer station B7-8, and right sampling station B7-9. Specifically, to the left of the shared unloading station B7-5 of the first conveyor are the left receiving station B7-4 and the left transfer station B7-2, and to the right are the right receiving station B7-6 and the right transfer station B7-8. To the left of the shared unloading station B7-5 of the second conveyor are the left receiving and waiting station B7-3 and the sampling station, and to the right are the right receiving and waiting station B7-7 and the right sampling station B7-9. Under the action of the first drive device B2 and the second drive device B5, the receiving box can move to the designated work position to cooperate with the left and right unloading robots.

[0122] The main technical solution of this embodiment is basically the same as that of embodiment 1. Features not explained in this embodiment are explained in embodiment 1 and will not be repeated here.

[0123] Example 4

[0124] In this embodiment, the left and right pick-and-unload manipulators of the forming conveyor packing unit have the same structure, both including a pick-and-unload support frame, a pick-and-unload translation drive device, a pick-and-unload lifting drive device, and a hand basin. The pick-and-unload translation drive device and the pick-and-unload lifting drive device are mounted on the support frame and drive the hand basin to move up and down and translate. The left and right pick-and-unload manipulators can also adopt the multi-functional pick-and-unload manipulator of existing technology CN216127617U, or the translation drive device and lifting drive device of CN216127617U.

[0125] The forming conveyor and packing unit in this embodiment is equipped with two transfer conveyor robots E. Each transfer conveyor robot E includes a transfer support frame, a transfer translation drive device, a transfer lifting drive device, and a clamping device. The transfer translation drive device and the transfer lifting drive device are mounted on the transfer support frame and used by the clamping device, which is used to clamp small stacks of products. The transfer support frame, transfer translation drive device, transfer lifting drive device, and clamping device can all adopt existing technologies. The transfer conveyor robot E can also adopt the container and lid transfer conveyor robot in patent publication CN108974445A, the receiving transfer conveyor robot in patent publication CN112045978A, etc.

[0126] The single-row whole-line overlapping lateral conveying device F, the limiting receiving quantitative conveying device G, the layer-by-layer receiving quantitative conveying device H, and the packing device I in this embodiment can be selected from existing technologies, such as the single-row whole-line overlapping lateral conveying device F, the limiting receiving flipping and lateral quantitative conveying device, the layer-by-layer pushing packing device I, and the multi-specification packing conveying device in the patent publication document CN112045978A.

[0127] refer to Figure 7 and 12This embodiment also includes a finished product unloading device J, which comprises a transmission drive device J1, a movable seat J2, a pushing device J3, and a discharge support device J4. One end of the transmission machine has a feeding station J3-1 located on the discharge side of the packing device I, and the other end has a discharge station J3-2. The movable seat J2 moves between the feeding station J3-1 and the discharge station J3-2 under the action of the transmission drive device J1. A side support device J4 is provided for the discharge station J3-2. A pushing device J3 is provided, and a discharge support device J4 is provided on the other side of the discharge station J3-2. The pushing device J3 includes a pushing support frame J3-3, a first translational pushing device J3-4J3, a pushing connecting seat J3-5, and a pushing cylinder J3-6. The first translational pushing device J3-4J3 is installed on the pushing support frame J3-3 and drives the pushing connecting seat J3-5 to move. One end of the pushing cylinder J3-6 is installed on the pushing connecting seat J3-5, and the other end faces the discharge support device J4. During operation, the packing device I flips the carton filled with products onto the moving seat J2 of the finished product unloading device located at the feeding station J3-1. The moving seat J2, under the action of the transmission drive device J1, carries the carton to the discharge station J3-2. The first translational pushing device J3-4J3 moves the pushing connecting seat J3-5 along with the pushing cylinder J3-6 towards the carton. The extension rod of the pushing cylinder J3-6 extends and pushes the carton onto the discharge support device J4, thus completing the carton discharge. This invention fully utilizes the length of the cylinder barrel of the pushing cylinder J3-6, maximizing the pushing distance without adding other equipment. Simultaneously, to avoid leaving marks on the carton surface, a pushing block is installed at the end of the piston rod of the pushing cylinder J3-6 to reduce the pressure on the pushing contact surface.

[0128] The main technical solution of this embodiment is basically the same as that of Embodiment 1 or Embodiment 2. Features not explained in this embodiment are explained in Embodiment 1 or Embodiment 2, and will not be repeated here.

[0129] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the claims. Those skilled in the art should understand, with reference to the preferred embodiments, that modifications or equivalent substitutions can be made to the technical solutions of the present invention, but such modifications or substitutions shall fall within the substantially the same scope of protection as the technical solutions of the present invention.

Claims

1. A thermoforming punching and shearing conveying device with three actions per die cycle, comprising an upper die mechanism, a sheet conveying structure, an electric furnace, and a lower die mechanism, wherein the upper die mechanism is provided with an upper die, an upper die table, and an upper die table lifting mechanism; the upper die is equipped with a punch lifting and lowering structure; the upper die is mounted on the upper die table; and the upper die table is driven to rise and fall by the upper die table lifting mechanism, characterized in that: The bottom of the upper mold is provided with an upper shear plate, and the upper shear plate is provided with an upper shear. The sheet conveying structure passes the sheet through the lower part of the upper shear after it has been heated by the electric furnace. The lower mold mechanism includes two lower molds, a lifting mold platform, a lower lifting drive device, a sliding pair and a translation drive device. The two lower molds are driven by the translation drive device to reciprocate along the sliding pair on the lifting mold platform. The lifting mold platform can be driven by the lower lifting drive device to rise or fall vertically. Two upper connecting parts are respectively provided on the bottom two sides of the upper shear plate. The upper connecting parts on both sides are staggered with the center line of the translational movement direction of the lower die. Each lower die is provided with a lower shearing opening that works in conjunction with the upper shearing opening. A lower die base is provided at the bottom of the lower die. Lower connecting parts are provided on both sides of each lower die corresponding to the upper connecting parts on both sides of the upper die. The two lower connecting parts on the right side of the lower die on the left and the two lower connecting parts on the left side of the lower die on the right are on the same straight line. When the upper die and the lower die lock the die to form and punch the sheet, the upper connecting parts of the upper die are docked and positioned with the lower connecting parts of the lower die that is locking the die.

2. The thermoforming punching and shearing conveying device with three actions per mold according to claim 1, characterized in that: The sliding pair includes a translation guide rail and a load-bearing translation sliding assembly. The translation guide rail consists of a track and a slider. Load-bearing translation sliding assemblies are provided on both outer sides of the translation guide rail. The load-bearing translation sliding assembly includes a support groove, multiple rolling elements, and a sliding support plate. The multiple rolling elements are rotatably installed inside the support groove and arranged in sequence. The sliding support plate is provided with a ridge, and the ridge of the sliding support plate slides in contact with the rolling elements in the support groove.

3. The thermoforming punching and shearing conveying device with three actions per mold according to claim 1, characterized in that: Each lower mold is equipped with a demolding motion box, which contains multiple mold bottom ejector rods, ejector rod connecting plates, and guide rods. The guide rods pass through the ejector rod connecting plates and are vertically installed in the demolding motion box. Each mold bottom ejector rod corresponds to one forming cavity of the lower mold. The lower end of the mold bottom ejector rod is fixed to the upper end of the ejector rod connecting plate, and the mold bottom is located at the bottom of the forming cavity. Each mold bottom ejector rod is equipped with a cooling channel. One end of the cooling channel opens towards the forming cavity, and the other end is connected to a cooling nozzle. The cooling nozzle is connected to an external cooling device through a pipe. The lifting mold table is equipped with a demolding cylinder. During demolding, the telescopic rod of the demolding cylinder extends upward and pushes the ejector rod connecting plate upward. The ejector rod connecting plate drives the bottom ejector rod to rise, moving the molded product in the molding cavity upward and separating it from the inner wall of the molding cavity.

4. The thermoforming punching and shearing conveying device with three actions per mold as described in claim 3, characterized in that: Each lower mold's demolding motion box is installed on a translational sliding platform. A translational connector is provided between the two translational sliding platforms, with both ends of the connector connected to the two translational sliding platforms respectively. A slider is fixed at the bottom of the translational sliding platform, and the slider slides on the guide rail. The guide rail is fixed to the lower lifting mold platform. Clutch traction pins that connect to the counterweight balance box are provided at both ends of the translational sliding platform.

5. The thermoforming punching and shearing conveying device with three actions per mold according to claim 2, characterized in that: The rolling element is configured as a cylindrical roller, and the two ends of the roller are rotatably mounted on the two side walls of the support rail.

6. A three-action thermoforming, punching, shearing, conveying, and packing production line per mold, characterized in that: This includes a thermoforming punching and shearing conveyor with three actions per mold cycle as described in any one of claims 1 to 5, a receiving conveyor, two picking and unloading conveyor robots, a transfer conveyor robot, a single-row whole-line stacking lateral conveyor, a limiting receiving and quantitative conveyor, a layer-by-layer receiving and quantitative conveyor, and a boxing device, wherein the two picking and unloading conveyor robots are a left picking and unloading conveyor robot and a right picking and unloading conveyor robot. The left and right unloading conveyor arms respectively convey the formed products from the two lower dies of the thermoforming punching and shearing machine to the two stacking bins of the receiving conveyor device. The intermediate conveyor arm transfers the products from the stacking bins to the single-row whole-strip stacking lateral conveyor device. The single-row whole-strip stacking lateral conveyor device sends the stacked products to the limiting receiving and positioning conveyor device. The limiting receiving and positioning conveyor device flips the products and sends them to the layer-by-layer receiving and quantitative conveyor device. The layer-by-layer receiving and quantitative conveyor device sends multiple rows of products layer by layer into the carton of the packing device.

7. The three-action thermoforming punching, shearing, conveying, and packing production line per mold as described in claim 6, characterized in that: Each module consists of three actions as follows: First action: One of the lower dies rises to the point where the upper and lower parts are precisely aligned and positioned before the blanking material contacts the sheet. At the same time, the upper die completes the stretching and thermoforming punching, leaving the product in the forming cavity. The edges and corners of the sheet separate from the product, completing the first action. The following actions are performed synchronously within the time period of the first action: (1) The demolding cylinder at the product unloading station moves to lift the ejector pin connecting plate. The ejector pin connecting plate drives the bottom ejector pin to rise, causing the product to detach from the inner wall of the molding cavity. When the product rises, the unloading conveyor arm picks up the material, and the demolding cylinder descends to reset. (2) The balance box located on the outside of the unloading material on the balance placement seat disengages from the clutch traction pin of the translation sliding platform; (3) The material handling robot on the other side lowers the stacked material and arrives above the unloading station to wait before the other lower mold moves to the unloading station; The second action: After completing the thermoforming punching and shearing, the lower die descends, and the lower shearing edge separates from the edge of the sheet; The following actions are performed simultaneously during the time period of the second action: (1) The clutch traction pin of the sliding platform below the lower mold after unloading is connected to the balance box placed on the balance box placement seat; (2) The unloading and conveying robot that has completed the material handling has completely removed the product from the lower shearing surface of the lower mold; (3) The unloading and conveying robot on the other side rises to the transfer station after stacking the materials; The third action: The lower mold carrying the product moves outward to the finished product unloading station, while the other lower mold simultaneously arrives at the forming standby station to achieve alternating and interchangeable stations; The following actions shall be performed simultaneously during the time period of the third action: (1) Sheet material drive structure completes the sheet material thermoforming station; (2) The material handling robot that has completed material handling is moved to the position above the product unloading standby station and waits for operation; (3) Another unloading and conveying robot is moved horizontally to the transfer station; This completes the final action of each cycle, and the process is repeated until the machine stops.

8. The three-action thermoforming punching, shearing, conveying, and packing production line per mold as described in claim 7, characterized in that: The material receiving and conveying device includes two parallel conveyors. Each conveyor is equipped with a frame, a first drive device, a sliding seat, a sliding platform, a second drive device, and a receiving and stacking box. The sliding seat is slidably mounted on the frame via a first guide rail and is driven by the first drive device to move longitudinally along the first guide rail. The sliding platform is located on the sliding seat, and the receiving and stacking box is slidably mounted on the sliding platform via a second guide rail and is driven by the second drive device to move laterally along the second guide rail.

9. The three-action thermoforming punching, shearing, conveying, and packing production line per mold as described in claim 8, characterized in that: Above the two conveyors are spaces for the left sampling station, left transfer station, left receiving and waiting station, left receiving station, shared unloading station, right receiving station, right receiving and waiting station, right transfer station and right sampling station.

10. The three-action thermoforming punching, shearing, conveying, and packing production line per mold as described in claim 9, characterized in that: The system also includes a finished product unloading device, which comprises a transmission drive device, a moving seat, a pushing device, and a discharge support device. One end of the transmission machine has a feeding station located on the discharge side of the packing device, and the other end has a discharge station. The moving seat moves between the feeding station and the discharge station under the action of the transmission drive device. The pushing device is located on one side of the discharge station, and the discharge support device is located on the other side. The pushing device comprises a pushing support frame, a first translational pushing device, a pushing connecting seat, and a pushing cylinder. The first translational pushing device is mounted on the pushing support frame and drives the pushing connecting seat to move. One end of the pushing cylinder is mounted on the pushing connecting seat, and the other end faces the discharge support device.

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