Negative pressure forming and punching all-in-one machine for plastic product production

Abstract

The invention relates to a negative pressure forming and punching all-in-one machine for plastic product production, and belongs to the plastic product production technology, the negative pressure forming and punching all-in-one machine comprises a fixed base and a fixed mounting plate, the fixed mounting plate is fixedly connected with the fixed base through a vertical positioning column, and a first refrigeration plate and a second refrigeration plate are fixedly mounted at the two ends of the top of the fixed mounting plate correspondingly; a lower die base and a lower attaching base are fixedly installed on the first refrigerating plate and the second refrigerating plate correspondingly, a lateral frame body is fixedly installed at one end of the fixed base, a vertical air cylinder is fixedly installed at one end of the lateral frame body, and the telescopic end of the vertical air cylinder is fixedly connected with a pressing and punching type integrated mechanism. According to the automatic forming machine, heating forming and cooling shaping can be automatically completed, the product quality and the forming stability can be improved, meanwhile, products can be rapidly and stably transferred, it is guaranteed that the working procedures are smoothly linked, forming and punching can be integrally operated, and the working procedure conversion time is shortened.

Description

Technical Field

[0001] The invention relates to the technical field of plastic product production, in particular to a negative pressure forming and punching integrated machine for producing plastic products. Background Art

[0002] Plastic products are industrial and consumer products made primarily of natural or synthetic resins, with various additives added, and then molded under specific temperature and pressure conditions. These products are manufactured using a variety of processes, including injection molding, vacuum forming, and blow molding. Molding and punching are core steps in the production process, directly impacting product precision and efficiency. Traditionally, these steps are performed in separate steps: first, the heated, softened plastic sheet is attached to a mold surface through vacuum forming, where it cools and sets into its initial shape. The product is then transferred to a punching machine, where the mold is used to trim or punch the edges of the product to achieve the desired dimensions.

[0003] In the existing plastic product production process, there is a lack of effective and precise coordinated control of negative pressure and temperature during the molding process, resulting in uneven product molding quality and a high defective rate. After molding, product transfer relies on manual labor or simple machinery, which is inefficient and has inaccurate positioning, easily causing damage to the product. The punching process is separated from the molding process, requiring additional equipment and operating space, increasing production costs and time. At the same time, there is a lack of automated linkage in each link, and manual intervention is frequent. This is not only labor-intensive, but also difficult to ensure production consistency and stability. It cannot meet the needs of large-scale, high-quality production, and there are certain disadvantages in the use process. Summary of the Invention

[0004] In order to overcome the technical defects of the existing technology, the present invention provides a negative pressure molding and punching machine for the production of plastic products, which has the effect of integrated molding and punching operations, reducing the process conversion time, and can automatically complete heating molding and cooling shaping, thereby improving product quality and molding stability. At the same time, it can quickly and stably transfer products to ensure smooth process connection.

[0005] The technical solution adopted by the present invention is: it includes a fixed base and a fixed mounting plate, the fixed mounting plate is fixedly connected to the fixed base through the vertical positioning column, the first refrigeration plate and the second refrigeration plate are fixedly mounted on both ends of the top of the fixed mounting plate, the lower mold base and the lower fitting seat are fixedly mounted on the first refrigeration plate and the second refrigeration plate, respectively, the lateral frame is fixedly mounted on one end of the fixed base, the vertical cylinder is fixedly mounted on one end of the lateral frame, and the telescopic end of the vertical cylinder is fixedly connected to the compacting and punching integrated machine The heating plate and the third cooling plate are installed on the compacting and punching integrated mechanism, and the upper mold base and the upper fitting base are fixed to the bottom of the heating plate and the third cooling plate respectively. The upper mold base and the upper fitting base vertically correspond to the lower mold base and the lower fitting base respectively. The suction and pressure type automatic control component is installed on one side of the upper mold base and the lower mold base, and the suction and pressure type automatic control component is connected to the first cooling plate and the heating plate. The rotating transfer component for transferring the negative pressure molded plastic products is installed on the fixed mounting plate.

[0006] Preferably, in order to control the up and down movement of the U-shaped connecting frame, the heating plate and the third cooling plate can be moved up and down, and at the same time, the square frame punching knife can be moved up and down by the vertical downward pressure rod, the compacting and punching integrated mechanism includes the U-shaped connecting frame and the vertical downward pressure rod, the U-shaped connecting frame is slidably connected to the lateral frame through the vertical limit rod, the heating plate and the third cooling plate are respectively fixed at both ends of the U-shaped connecting frame, the vertical downward pressure rod is slidably inserted into the U-shaped connecting frame, and the square frame punching knife is installed at the bottom of the vertical downward pressure rod.

[0007] Preferably, in order to enable the square-shaped punching knife to punch the corners of the plastic product between the upper fitting seat and the lower fitting seat, the square-shaped punching knife is fixedly connected to the vertical downward pressure rod through the extended connecting strip, and the square-shaped punching knife is located above the upper fitting seat and the lower fitting seat.

[0008] Preferably, in order to control the extension and contraction of the vertical cylinder so that the lifting and lowering pressure block can move up and down, the circular connecting head is fixedly installed on the top of the vertical lower pressure rod, and the circular connecting head is elastically connected to the U-shaped connecting frame through the connecting spring. The lifting and lowering pressure block is fixedly installed on the circular connecting head, and the lifting and lowering pressure block is fixedly connected to the telescopic end of the vertical cylinder.

[0009] Preferably, in order to control the negative pressure pump to be turned on so that the lower mold base forms negative pressure and the upper mold base forms positive pressure, the suction and pressure automatic control component includes the positioning frame, the positioning frame is fixed to one end of the fixed base, the transfer control box is fixedly installed on one end of the positioning frame, the transfer control box is respectively connected to the upper mold base and the lower mold base through the first pipe and the second pipe, the negative pressure pump is fixedly installed on the second pipe, the first controller and the second controller are fixedly installed inside the transfer control box, and the first controller and the second controller are respectively electrically connected to the heating plate and the first cooling plate.

[0010] Preferably, in order to enable the driven lifting plate to slide on the smooth column and reset the driven lifting plate through the return spring, the fixed top plate is fixedly installed on the inner wall of the relay control box, the first controller is fixed on the fixed top plate, the second controller is fixed on the inner wall of the bottom end of the relay control box, the smooth column is fixedly installed on the bottom of the fixed top plate, the driven lifting plate is slidably plugged into the smooth column, one end of the driven lifting plate is elastically connected to the fixed top plate through the return spring, and the other end of the driven lifting plate vertically corresponds to the second controller.

[0011] Preferably, in order to control the opening of the negative pressure pump so that the air in the lower mold base enters the transfer control box and can push the lifting and pressing cylinder upward, the lifting and pressing cylinder is fixed on the driven lifting plate, and the lifting and pressing cylinder is located below the first controller, and the bottom open end of the lifting and pressing cylinder corresponds to the air inlet hole of the transfer control box.

[0012] Preferably, in order to control the servo motor to turn on so that the rotating connecting column can drive the horizontal rotating plate to rotate, the rotating transfer assembly includes the servo motor and the horizontal rotating plate, the servo motor is fixed to the bottom of the fixed mounting plate, and the horizontal rotating plate is fixedly connected to the output shaft of the servo motor through the rotating connecting column.

[0013] Preferably, in order to control the micro motor to turn on so that the bidirectional lead screw can rotate in the limiting slide groove through the rotating joint, the clamping bar is fixedly installed at one end of the horizontal rotating plate, and a limiting slide groove is provided on the clamping bar, and the micro motor is fixedly installed on the inner wall of one end of the limiting slide groove, and the bidirectional lead screw is fixedly connected to the output shaft of the micro motor, and one end of the bidirectional lead screw is rotatably connected to the inner wall of the other end of the limiting slide groove through the rotating joint.

[0014] Preferably, in order to control the rotation of the bidirectional screw so that the two threaded sliders can slide in opposite directions in the limiting slide groove, thereby adjusting the distance between the first material feeding rack and the second material feeding rack, the bidirectional screw is equipped with the threaded slider, and the threaded slider is slidably engaged in the limiting slide groove, and there are two threaded sliders, and the two threaded sliders are respectively located at the opposite thread ends of the bidirectional screw, and the first material feeding rack and the second material feeding rack are respectively fixedly installed on the two threaded sliders in a symmetrical manner.

[0015] The present invention has the following beneficial effects: The compacting and punching integrated mechanism achieves integrated forming and punching operations, reducing process changeover time; the pumping and pressing automatic control assembly, with the help of a negative pressure pump linked to a first controller and a second controller, automatically completes heating and shaping, improving product quality and forming stability; and the rotary transfer assembly enables rapid and stable product transfer, ensuring smooth process transitions. The collaborative operation of the processing greatly improves the degree of production automation, reduces labor costs and defective product rates, and significantly enhances production efficiency and economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 Schematic diagram of the installation structure of the rotary transfer assembly of the present invention;

[0018] Figure 3 This is a schematic diagram of the installation structure of the transfer control box of the present invention;

[0019] Figure 4 This is a schematic diagram of the internal structure of the transfer control box of the present invention;

[0020] Figure 5 This is a structural diagram of the lifting and pressing cylinder of the present invention;

[0021] Figure 6 It is a structural schematic diagram of the rotary transfer assembly of the present invention;

[0022] Figure 7 Schematic diagram of the installation structure of the first reclaimer and the second reclaimer of the present invention;

[0023] Figure 8 Schematic diagram of the installation structure of the U-shaped connecting frame of the present invention;

[0024] Figure 9 This is a schematic diagram of the installation structure of the lifting and lowering pressing block of the present invention;

[0025] Figure 10 It is a structural schematic diagram of the square frame punching knife of the present invention.

[0026] Explanation of the accompanying drawings: In the figure: 1, fixed base; 2, fixed mounting plate; 3, vertical positioning column; 4, first refrigeration plate; 5, second refrigeration plate; 6, lower die seat; 7, lower fitting seat; 8, lateral frame; 9, vertical cylinder; 10, compacting and punching integrated mechanism; 1001, U-shaped connecting frame; 1002, vertical pressing rod; 1003, vertical limiting rod; 1004, square-shaped punching knife; 1005, extended connecting strip; 1006, circular connecting head; 1007, connecting spring; 1008, lifting and lowering pressure block; 11, heating plate; 12, third refrigeration plate; 13, upper die seat; 14, upper fitting seat; 15, pumping and pressing automatic control component; 1501, positioning frame Body; 1502, transfer control box; 1503, first pipeline; 1504, second pipeline; 1505, negative pressure pump; 1506, first controller; 1507, second controller; 1508, fixed top plate; 1509, smooth column; 1510, driven lifting plate; 1511, return spring; 1512, lifting and pressing cylinder; 16, rotation transfer assembly; 1601, servo motor; 1602, horizontal rotating plate; 1603, rotating connecting column; 1604, clamping bar; 1605, micro motor; 1606, bidirectional screw; 1607, rotating joint; 1608, threaded slider; 1609, first material rack; 1610, second material rack. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with the accompanying drawings:

[0028] like Figures 1-10As shown, this embodiment provides a negative pressure forming and punching integrated machine for the production of plastic products, including a fixed base 1 and a fixed mounting plate 2, the fixed mounting plate 2 is fixedly connected to the fixed base 1 through a vertical positioning column 3, and the first and second refrigeration plates 4 and 5 are fixedly installed at both ends of the top of the fixed mounting plate 2, and the first and second refrigeration plates 4 and 5 are fixedly installed with a lower mold base 6 and a lower fitting base 7 respectively. A lateral frame 8 is fixedly installed at one end of the fixed base 1, and a vertical cylinder 9 is fixedly installed at one end of the lateral frame 8. A compacting and punching integrated mechanism 10 is fixedly connected to the telescopic end of the vertical cylinder 9, and a heating plate 11 and a third refrigeration plate 12 are installed on the compacting and punching integrated mechanism 10. The compacting and punching integrated mechanism 10 includes a U-shaped connecting frame 1001 and a vertical lower pressing rod 1002. The U-shaped connecting frame 1001 is fixedly installed at one end through a vertical limiting The positioning rod 1003 is slidably connected to the lateral frame 8, the heating plate 11 and the third refrigeration plate 12 are respectively fixed at both ends of the U-shaped connecting frame 1001, and the vertical downward pressure rod 1002 is slidably inserted into the U-shaped connecting frame 1001. A square-shaped punching knife 1004 is installed at the bottom of the vertical downward pressure rod 1002, and the square-shaped punching knife 1004 is fixedly connected to the vertical downward pressure rod 1002 through an extended connecting strip 1005, and the square-shaped punching knife 1004 is located above the upper fitting seat 14 and the lower fitting seat 7. A circular connecting head 1006 is fixedly installed on the top of the vertical downward pressure rod 1002, and the circular connecting head 1006 is elastically connected to the U-shaped connecting frame 1001 through a connecting spring 1007. A lifting and lowering pressing block 1008 is fixedly installed on the circular connecting head 1006, and the lifting and lowering pressing block 1008 is fixedly connected to the telescopic end of the vertical cylinder 9. During use, the plastic raw material is first placed between the lower mold base 6 and the lower fitting base 7. The vertical cylinder 9 is activated, and its telescopic end drives the lifting and lowering pressure block 1008 to move downward. The heating plate 11 is fitted with the first refrigeration plate 4 and cooperates with the first refrigeration plate 4 to achieve negative pressure molding under the action of the pumping and pressing automatic control component 15, providing temperature conditions for molding. Under the action of the pumping and pressing automatic control component 15, automatic heating and automatic refrigeration are achieved. After molding, the rotary transfer component 16 transfers the molded plastic product to between the lower fitting base 7 and the upper fitting base 14. The vertical cylinder 9 is continuously controlled to extend and retract, and the square-shaped punching knife 1004 is continuously pressed down close to the product through the circular connector 1006 and the vertical pressing rod 1002. The square-shaped punching knife 1004 punches the edges and corners of the product between the upper fitting base 14 and the lower fitting base 7. After punching is completed, the vertical cylinder 9 retracts and the components are reset to facilitate material removal. The whole process provides downward pressure for negative pressure molding, can position the molded products, and realizes the integration of punching and cutting.

[0029] As a technical optimization solution of the present invention, specifically Figure 3 and Figure 4As shown, an upper mold base 13 and an upper fitting base 14 are fixed to the bottom of the heating plate 11 and the third cooling plate 12 respectively. The upper mold base 13 and the upper fitting base 14 vertically correspond to the lower mold base 6 and the lower fitting base 7 respectively. A suction and pressure type automatic control component 15 is installed on one side of the upper mold base 13 and the lower mold base 6. The suction and pressure type automatic control component 15 is connected to the first cooling plate 4 and the heating plate 11. A rotating transfer component 16 for transferring negative pressure molded plastic products is installed on the fixed mounting plate 2. The pumping and pressure automatic control component 15 includes a positioning frame 1501, which is fixed to one end of the fixed base 1, and a transfer control box 1502 is fixedly installed on one end of the positioning frame 1501. The transfer control box 1502 is connected to the upper mold base 13 and the lower mold base 6 respectively through a first pipe 1503 and a second pipe 1504. A negative pressure pump 1505 is fixedly installed on the second pipe 1504. A first controller 1506 and a second controller 1507 are fixedly installed inside the transfer control box 1502. The first controller 1506 and the second controller 1507 are electrically connected to the heating plate 11 and the first cooling plate 4 respectively. A fixed top plate 1508 is fixedly installed on the inner wall of the transfer control box 1502. The first controller 1506 is fixed to the upper mold base 13 and the lower mold base 6 respectively through a first pipe 1503 and a second pipe 1504. A negative pressure pump 1505 is fixedly installed on the second pipe 1504. It is fixed on the fixed top plate 1508, the second controller 1507 is fixed on the inner wall of the bottom end of the transfer control box 1502, a smooth column 1509 is fixedly installed on the bottom of the fixed top plate 1508, and a driven lifting plate 1510 is slidably inserted on the smooth column 1509. One end of the driven lifting plate 1510 is elastically connected to the fixed top plate 1508 through a reset spring 1511, and the other end of the driven lifting plate 1510 vertically corresponds to the second controller 1507. A lifting and pressing cylinder 1512 is fixed on the driven lifting plate 1510, and the lifting and pressing cylinder 1512 is located below the first controller 1506, and the bottom open end of the lifting and pressing cylinder 1512 corresponds to the air inlet of the transfer control box 1502; when in use, the raw material is placed between the upper mold base 13 and the lower mold base 6. When negative pressure pump 1505 is activated, negative pressure is generated on lower die base 6 to aid in molding the raw material. Gas enters transfer control box 1502 via second pipe 1504, pushing driven lift plate 1510 upward along smooth column 1509. This causes lift and press cylinder 1512 to press first controller 1506, activating heating plate 11 to provide heat. After molding, negative pressure pump 1505 stops, and return spring 1511 resets driven lift plate 1510, which then moves downward and resets, triggering second controller 1507, causing first cooling plate 4 to start cooling the product. The rotating transfer assembly 16 then transfers the product. The entire process is automated through the pump-and-press automatic control assembly 15, achieving automatic heating, cooling, and negative pressure molding control, improving production efficiency and quality.

[0030] As a technical optimization solution of the present invention, specifically Figure 6 and Figure 7As shown, the rotation transfer component 16 includes a servo motor 1601 and a horizontal rotating plate 1602. The servo motor 1601 is fixed to the bottom of the fixed mounting plate 2. The horizontal rotating plate 1602 is fixedly connected to the output shaft of the servo motor 1601 through a rotating connecting column 1603. A clamping bar 1604 is fixedly installed at one end of the horizontal rotating plate 1602. A limiting slide groove is provided on the clamping bar 1604. A micro motor 1605 is fixedly installed on the inner wall of one end of the limiting slide groove. A bidirectional screw 1606 is fixedly connected to the output shaft of the micro motor 1605. One end of the bidirectional screw 1606 is rotatably connected to the inner wall of the other end of the limiting slide groove through a rotating joint 1607. Threaded sliders 1608 are mounted on 1606 and slide into the limiting chute. There are two threaded sliders 1608, one located at the opposite thread ends of the bidirectional lead screw 1606. A first material reclaimer 1609 and a second material reclaimer 1610 are fixedly mounted on the two threaded sliders 1608, symmetrically distributed. During operation, the micro motor 1605 is first activated to rotate the bidirectional lead screw 1606. Because the two threaded sliders 1608 are at opposite thread ends, they slide in opposite directions in the limiting chute, thereby adjusting the distance between the first and second material reclaimers 1609 and 1610 to accommodate the plastic product. The servo motor 1601 is then activated, and its output shaft rotates the horizontal rotating plate 1602 via the rotating connecting column 1603, causing the clamping bar 1604 to move above the molded plastic product. Then, the micro motor 1605 is controlled to reverse, allowing the first and second pick-up racks 1609 and 1610 to approach and clamp the product. Finally, the servo motor 1601 is started again to rotate the horizontal rotating plate 1602 to the next process position, and the micro motor 1605 is controlled to adjust the spacing and place the product, completing the transfer of the plastic product.

[0031] When the present invention is in use, in the negative pressure molding stage: the plastic raw material is placed between the lower mold base 6 and the lower fitting base 7, the vertical cylinder 9 is started, and its telescopic end drives the lifting and pressing block 1008 to move downward, the heating plate 11 fits the first refrigeration plate 4, and the negative pressure pump 1505 is started. The lower mold base 6 forms a negative pressure to assist the raw material molding, and the gas enters the transfer control box 1502 to push the driven lifting plate 1510 to move upward, so that the lifting pressing cylinder 1512 presses the first controller 1506, and the heating plate 11 works to provide heat; after molding, the negative pressure pump 1505 stops, and the reset spring 1511 resets the driven lifting plate 1510 to trigger the second controller 1507, and the first refrigeration plate 4 starts to refrigerate and cool the product.

[0032] Product transfer stage: Start the micro motor 1605 to drive the bidirectional screw 1606 to rotate, adjust the distance between the first material rack 1609 and the second material rack 1610 to adapt to the product, start the servo motor 1601 to drive the horizontal rotating plate 1602 to rotate, so that the clamping block 1604 moves above the molded plastic product, control the micro motor 1605 to reverse and transfer the two material racks to clamp the product, then start the servo motor 1601 to transfer it to the next process position, adjust the distance and put down the product.

[0033] Product punching stage: Control the extension and retraction of the vertical cylinder 9, and press the square punching knife 1004 down close to the product through the circular connector 1006 and the vertical pressing rod 1002 to punch the corners of the product. After the punching is completed, the vertical cylinder 9 retracts and the components are reset to take the material.

[0034] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which shall fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A negative pressure forming and punching machine for producing plastic products, comprising a fixed base (1) and a fixed mounting plate (2), wherein the fixed mounting plate (2) is fixedly connected to the fixed base (1) via a vertical positioning column (3), and is characterized in that: The first refrigeration plate (4) and the second refrigeration plate (5) are fixedly mounted on both ends of the top of the fixed mounting plate (2), and the lower mold base (6) and the lower fitting base (7) are fixedly mounted on the first refrigeration plate (4) and the second refrigeration plate (5), respectively. A lateral frame (8) is fixedly mounted on one end of the fixed base (1), and a vertical cylinder (9) is fixedly mounted on one end of the lateral frame (8). The telescopic end of the vertical cylinder (9) is fixedly connected to a pressing and punching integrated mechanism (10), and a heating plate (11) and a third refrigeration plate (12) are mounted on the pressing and punching integrated mechanism (10). The heating plate (11) and the bottom of the third refrigeration plate (12) are respectively fixed with an upper mold base (13) and an upper fitting base (14), and the upper mold base (13) and the upper fitting base (14) are respectively vertically corresponding to the lower mold base (6) and the lower fitting base (7), and a suction and pressure type automatic control component (15) is installed on one side of the upper mold base (13) and the lower mold base (6), and the suction and pressure type automatic control component (15) is connected to the first refrigeration plate (4) and the heating plate (11), and a rotating transfer component (16) for transferring the negative pressure molded plastic products is installed on the fixed mounting plate (2).

2. The negative pressure forming and punching integrated machine for producing plastic products according to claim 1, characterized in that: The compacting and punching integrated mechanism (10) comprises a U-shaped connecting frame (1001) and a vertical downward pressing rod (1002); the U-shaped connecting frame (1001) is slidably connected to the lateral frame (8) via a vertical limiting rod (1003); the heating plate (11) and the third cooling plate (12) are respectively fixed at both ends of the U-shaped connecting frame (1001); the vertical downward pressing rod (1002) is slidably plugged into the U-shaped connecting frame (1001); and a square-shaped punching knife (1004) is installed at the bottom of the vertical downward pressing rod (1002).

3. The negative pressure forming and punching integrated machine for producing plastic products according to claim 2, characterized in that: The square-shaped punching knife (1004) is fixedly connected to the vertical downward pressing rod (1002) via an extended connecting strip (1005), and the square-shaped punching knife (1004) is located above the upper fitting seat (14) and the lower fitting seat (7).

4. The negative pressure forming and punching integrated machine for producing plastic products according to claim 3, characterized in that: A circular connector (1006) is fixedly mounted on the top of the vertical downward pressure rod (1002), and the circular connector (1006) is elastically connected to the U-shaped connecting frame (1001) via a connecting spring (1007). A lifting downward pressure block (1008) is fixedly mounted on the circular connector (1006), and the lifting downward pressure block (1008) is fixedly connected to the telescopic end of the vertical cylinder (9).

5. The negative pressure forming and punching integrated machine for producing plastic products according to claim 1, characterized in that: The pumping and pressing automatic control assembly (15) includes a positioning frame (1501), the positioning frame (1501) is fixed to one end of the fixed base (1), a transfer control box (1502) is fixedly installed on one end of the positioning frame (1501), the transfer control box (1502) is connected to the upper mold base (13) and the lower mold base (6) respectively through a first pipe (1503) and a second pipe (1504), a negative pressure pump (1505) is fixedly installed on the second pipe (1504), and a first controller (1506) and a second controller (1507) are fixedly installed inside the transfer control box (1502), and the first controller (1506) and the second controller (1507) are electrically connected to the heating plate (11) and the first cooling plate (4) respectively.

6. The negative pressure forming and punching integrated machine for producing plastic products according to claim 5, characterized in that: A fixed top plate (1508) is fixedly installed on the inner wall of the transfer control box (1502), the first controller (1506) is fixed on the fixed top plate (1508), and the second controller (1507) is fixed on the inner wall of the bottom end of the transfer control box (1502). A smooth column (1509) is fixedly installed on the bottom of the fixed top plate (1508), and a driven lifting plate (1510) is slidably plugged into the smooth column (1509). One end of the driven lifting plate (1510) is elastically connected to the fixed top plate (1508) through a return spring (1511), and the other end of the driven lifting plate (1510) vertically corresponds to the second controller (1507).

7. The negative pressure forming and punching integrated machine for producing plastic products according to claim 6, characterized in that: A lifting and pressing cylinder (1512) is fixed on the driven lifting plate (1510), and the lifting and pressing cylinder (1512) is located below the first controller (1506), and the bottom opening end of the lifting and pressing cylinder (1512) corresponds to the air inlet of the transfer control box (1502).

8. The negative pressure forming and punching integrated machine for producing plastic products according to claim 1, characterized in that: The rotation transfer assembly (16) comprises a servo motor (1601) and a horizontal rotation plate (1602), wherein the servo motor (1601) is fixed to the bottom of the fixed mounting plate (2), and the horizontal rotation plate (1602) is fixedly connected to the output shaft of the servo motor (1601) via a rotation connection column (1603).

9. The negative pressure forming and punching integrated machine for producing plastic products according to claim 8, characterized in that: A clamping bar (1604) is fixedly mounted on one end of the horizontal rotating plate (1602), a limiting slide groove is provided on the clamping bar (1604), a micro motor (1605) is fixedly mounted on the inner wall of one end of the limiting slide groove, a bidirectional lead screw (1606) is fixedly connected to the output shaft of the micro motor (1605), and one end of the bidirectional lead screw (1606) is rotatably connected to the inner wall of the other end of the limiting slide groove via a rotating joint (1607).

10. The negative pressure forming and punching integrated machine for producing plastic products according to claim 9, characterized in that: A threaded slider (1608) is installed on the bidirectional lead screw (1606), and the threaded slider (1608) is slidably engaged in the limiting slide groove, and there are two threaded sliders (1608). The two threaded sliders (1608) are respectively located at the reverse thread ends of the bidirectional lead screw (1606), and the two threaded sliders (1608) are respectively fixedly installed with a first material picking rack (1609) and a second material picking rack (1610) that are symmetrically distributed.

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