Plastic meal box forming device

Abstract

The invention discloses a plastic lunch box forming device, and belongs to the technical field of plastic lunch boxes, the plastic lunch box forming device comprises a workbench, a supporting rod is fixedly mounted on the top wall of the workbench, and a top plate is fixedly mounted at the top end of the supporting rod. According to the scheme, an ejector plate is arranged, a first bevel gear set is driven to rotate through a linkage rod, a first rack, a first gear and a horizontal rod in the upward moving process of a mounting plate, and then a first threaded rod is driven to move upwards through a mounting ring in the rotating process of the first bevel gear set; in the upward moving process of the first threaded rod, an ejection plate is driven to move upwards through a vertical rod, then the formed meal box is driven to move upwards in the upward moving process of the ejection plate, and after the ejection plate enters a mold cavity, external airflow can flow into the mold cavity through a vertical groove, so that negative pressure between the mold cavity and the meal box is effectively avoided, and the meal box is prevented from being damaged. Therefore, the production efficiency of the lunch box is influenced, and the effect of improving the production efficiency of the lunch box is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of plastic lunch boxes, and more particularly to a plastic lunch box forming device. Background Art

[0002] Currently, when manufacturing plastic lunch boxes, a driving mechanism is often used to drive a male mold mechanism to move toward a female mold mechanism, thereby closing the male and female mold mechanisms. A molten plastic material is then injected into the space between the male and female mold mechanisms using an injection molding machine to achieve injection molding of the plastic lunch box. However, due to the thermal expansion and contraction of high-temperature molten plastic during cooling, the molded plastic lunch box is difficult to separate from the injection mold after molding, making demolding difficult. In the prior art, for example, a mold for producing plastic lunch boxes, such as that disclosed in Publication No. CN114193708A, utilizes a tool inserted into a prying opening to pry the upper mold from the middle mold. However, the efficiency of prying with the tool is low, thereby affecting the production efficiency of the lunch box. Furthermore, prying the lunch box out with the tool can easily damage the lunch box, requiring it to be melted and remolded, further affecting the production efficiency of the lunch box.

[0003] In response to the above problems, some solutions have been provided in the prior art. For example, the Chinese invention patent application with the publication number CN115027012A discloses a mold for producing plastic lunch boxes. The device is provided with an ejection mechanism. After the mold is opened, the molded plastic lunch box is automatically ejected without manual operation, thereby avoiding damage to the lunch box and improving the production efficiency of the lunch box. However, in actual use, due to the negative pressure between the molded lunch box and the inner wall of the mold cavity, if an external force is used to directly push the lunch box to move, the lunch box will first be deformed. When the negative pressure between the lunch box and the inner wall of the mold cavity is too large, the lunch box will be damaged by the external force, thereby seriously affecting the production efficiency of the lunch box. Summary of the Invention

[0004] In view of the problems existing in the prior art, the object of the present invention is to provide a plastic lunch box forming device, which can achieve the purpose of improving the production efficiency of lunch boxes.

[0005] To solve the above problems, the present invention adopts the following technical solutions.

[0006] A plastic lunch box forming device comprises a workbench, a support rod fixedly mounted on the top wall of the workbench, a top plate fixedly mounted on the top end of the support rod, hydraulic rods fixedly mounted evenly on the top plate, a mounting plate fixedly mounted on the output end of the hydraulic rod, an upper mold fixedly mounted on the mounting plate, a mold cavity formed on the workbench, and an ejection assembly provided on the workbench; The ejection assembly includes a vertical groove provided on the workbench, a mounting cylinder is fixedly installed in the vertical groove, a slider is vertically slidably installed in the mounting cylinder, a first threaded rod is fixedly installed on the top wall of the slider, a vertical rod is fixedly installed on the top wall of the first threaded rod, an ejection plate is fixedly installed on the top wall of the vertical rod, a driving assembly cooperating with the first threaded rod is provided on the mounting cylinder, and a feeding pipe is inserted into the upper mold; An elastic pad is installed between the top wall of the mounting plate and the top plate. A cavity is provided on the elastic pad, and an air inlet valve whose input end is connected to the outside is inserted into the cavity. An air cavity is provided on the workbench, and an air groove connected to the mold cavity is provided on the air cavity. An air pipe is inserted into the air cavity, a ventilation component is provided on the top plate, and a filter is fixedly installed in the vertical groove.

[0007] Furthermore, the drive assembly includes a mounting ring rotatably mounted on the top wall of the mounting cylinder, and the mounting ring is threadedly engaged with the first threaded rod, a horizontal rod is rotatably mounted on the side wall of the vertical groove, and a first bevel gear set is jointly installed between the horizontal rod and the mounting ring, a first gear is fixedly mounted on the end of the horizontal rod away from the mounting ring, a linkage rod is fixedly mounted on the bottom wall of the mounting plate, and a first rack meshing with the first gear is fixedly mounted on the bottom wall of the linkage rod.

[0008] Furthermore, the workbench is provided with a pushing assembly that cooperates with the ejection plate, and the pushing assembly includes a linkage plate symmetrically fixedly installed on the top wall of the workbench, a rotating rod is installed between the two linkage plates for common rotation, a second threaded rod is installed for common rotation on the mounting plate, and a second bevel gear is installed for common rotation between the rotating rod and the second threaded rod, and a discharge plate is threadedly installed on the two second threaded rods.

[0009] Furthermore, a second gear is fixedly mounted on the rotating rod, and a second rack meshing with the second gear is fixedly mounted on the side wall of the linkage rod.

[0010] Furthermore, the ventilation assembly includes a connecting rod vertically slidably mounted on the top plate, and a first spring is installed between the connecting rod and the top plate. A connecting groove is provided on the connecting rod, and the air pipe is connected to the connecting groove.

[0011] Furthermore, a collection box is detachably mounted on the side wall of the workbench, and a collection trough communicating with the collection box is provided on the side wall of the vertical trough.

[0012] Furthermore, a hollow rod is fixedly mounted on the top wall of the mounting ring, a scraper is fixedly mounted on the side wall of the hollow rod, and a telescopic tube rotatably matched with the ejection plate is fixedly mounted on the top wall of the hollow rod.

[0013] Furthermore, the bottom wall of the air groove forms an angle of seventy degrees with the horizontal plane.

[0014] Furthermore, a limiting block is symmetrically fixedly installed on the side wall of the discharge plate, and the side wall of the limiting block away from the discharge plate is an inclined surface.

[0015] Compared with the prior art, the present invention has the following beneficial effects: (1) This solution sets an ejector plate. During the upward movement of the mounting plate, the first bevel gear set is driven to rotate through the linkage rod, the first rack, the first gear, and the horizontal rod. During the rotation of the first bevel gear set, the first threaded rod is driven upward through the mounting ring. During the upward movement of the first threaded rod, the ejector plate is driven upward through the vertical rod. During the upward movement of the ejector plate, the formed lunch box is driven upward. After the ejector plate enters the mold cavity, the external air flow can flow into the mold cavity through the vertical groove, thereby effectively avoiding negative pressure between the mold cavity and the lunch box, which causes damage to the lunch box and affects the production efficiency of the lunch box, thereby improving the production efficiency of the lunch box. (2) This solution sets a discharge plate, and the linkage rod drives the second rack to contact the second gear, and drives the second gear to rotate. Then, during the rotation of the second gear, the discharge plate is driven to move horizontally along the second threaded rod through the rotating rod, the second bevel gear set, and the second threaded rod. During the movement of the discharge plate, it gradually contacts the lunch box and drives the lunch box to move toward the conveyor belt. Then, the conveyor belt can transport the lunch box to the next step, so that there is no need for personnel to manually pick up the lunch box throughout the process, which reduces the labor intensity of the staff and further improves the production efficiency of the lunch box. (3) This solution sets an elastic pad. After the lunch box is out of contact with the air groove, the connecting groove is connected to the air pipe. At this time, the air flow in the cavity flows into the air cavity through the connecting groove and the air pipe, and is blown into the mold cavity through the air groove on the air cavity, and then flows to the outside through the vertical groove on the bottom wall of the mold cavity. In the process of the air flow flowing to the vertical groove, it can drive the impurities left after the lunch box is formed to flow to the vertical groove together. At this time, the filter can filter the impurities in the air flow, so that the user does not need to spend time manually cleaning the impurities in the mold cavity, further improving the production efficiency of the lunch box; (4) This solution sets a scraper to drive the hollow rod to rotate during the rotation of the mounting ring, and the scraper can be driven to rotate during the rotation of the hollow rod. Then, the impurities on the top wall of the filter can be driven to rotate during the rotation of the scraper, and the telescopic tube can be driven to rotate during the rotation of the hollow rod. When the ejection plate moves upward, the telescopic tube will be stretched. The setting of the telescopic tube can prevent impurities from entering the gap between the hollow rod and the vertical rod. Then, under the action of centrifugal force, the impurities move through the collection groove into the collection box. Then, when the impurities need to be cleaned, the user only needs to remove the collection box to complete the cleaning of the impurities, further improving the production efficiency of the lunch box. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 is a cross-sectional view of the present invention; Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle; Figure 4 For the present invention Figure 2 Enlarged view of point B in the middle; Figure 5 This is a cross-sectional view of the ejector plate, hollow rod, mounting cylinder, and slider of the present invention; Figure 6 This is a combined diagram of the second bevel gear, the rotating rod, and the second threaded rod of the present invention; Figure 7 It is a combined diagram of the discharge plate and the limiting block of the present invention.

[0017] Description of the numbers in the figure: 1. Workbench; 2. Support rod; 3. Top plate; 4. Hydraulic rod; 5. Mounting plate; 6. Upper mold; 7. Ejector assembly; 701. Mounting cylinder; 702. Vertical slot; 703. Slider; 704. First threaded rod; 705. Vertical rod; 706. Ejector plate; 707. Feeding tube; 8. Drive assembly; 801. Mounting ring; 802. Horizontal rod; 803. First bevel gear set; 804. First gear; 805. Linkage rod; 806. First rack; 9. Pushing assembly; 901. Linkage plate; 902. Rotating rod; 903. Second threaded rod; 904. Second bevel gear set; 905. Discharging plate; 906. Second gear; 907. Second rack; 101, elastic pad; 102, air inlet valve; 103, air tank; 104, air pipe; 105, filter; 106, ventilation assembly; 1061, connecting rod; 1062, first spring; 1063, connecting tank; 111. Collection box; 112. Hollow rod; 113. Scraper; 114. Telescopic tube; 12. Limit block. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0019] See also Figures 1 to 7 A plastic lunch box forming device includes a workbench 1, a support rod 2 is fixedly mounted on the top wall of the workbench 1, a top plate 3 is fixedly mounted on the top of the support rod 2, a hydraulic rod 4 is evenly fixedly mounted on the top plate 3, a mounting plate 5 is fixedly mounted on the output end of the hydraulic rod 4, an upper mold 6 is fixedly mounted on the mounting plate 5, a mold cavity is opened on the workbench 1, and an ejection assembly 7 is provided on the workbench 1; The ejection assembly 7 includes a vertical groove 702 provided on the workbench 1, a mounting cylinder 701 being fixedly installed in the vertical groove 702, a slider 703 being vertically slidably installed in the mounting cylinder 701, a first threaded rod 704 being fixedly installed on the top wall of the slider 703, a vertical rod 705 being fixedly installed on the top wall of the first threaded rod 704, an ejection plate 706 being fixedly installed on the top wall of the vertical rod 705, a driving assembly 8 cooperating with the first threaded rod 704 being provided on the mounting cylinder 701, and a feeding pipe 707 being inserted into the upper mold 6; An elastic pad 101 is installed between the top wall of the mounting plate 5 and the top plate 3. A cavity is provided on the elastic pad 101, and an air inlet valve 102 whose input end is connected to the outside is inserted into the cavity. An air cavity is provided on the workbench 1, and an air groove 103 connected to the mold cavity is provided on the air cavity. An air pipe 104 is inserted into the air cavity. A ventilation component 106 is provided on the top plate 3, and a filter screen 105 is fixedly installed in the vertical groove 702.

[0020] The driving assembly 8 includes a mounting ring 801 rotatably mounted on the top wall of the mounting cylinder 701, and the mounting ring 801 is threadedly engaged with the first threaded rod 704, a horizontal rod 802 is rotatably mounted on the side wall of the vertical groove 702, and a first bevel gear set 803 is jointly installed between the horizontal rod 802 and the mounting ring 801, a first gear 804 is fixedly mounted on one end of the horizontal rod 802 away from the mounting ring 801, a linkage rod 805 is fixedly mounted on the bottom wall of the mounting plate 5, and a first rack 806 meshing with the first gear 804 is fixedly mounted on the bottom wall of the linkage rod 805.

[0021] The ventilation assembly 106 includes a connecting rod 1061 vertically slidably mounted on the top plate 3, and a first spring 1062 is installed between the connecting rod 1061 and the top plate 3. A connecting groove 1063 is formed on the connecting rod 1061, and the air pipe 104 is connected to the connecting groove 1063.

[0022] During use, the output end of the hydraulic rod 4 drives the upper mold 6 to move downward through the mounting plate 5, and during the downward movement of the mounting plate 5, the first rack 806 is driven downward through the linkage rod 805, and during the downward movement of the first rack 806, the horizontal rod 802 is driven to rotate through the first gear 804. Since the slider 703 is vertically slidably matched with the mounting cylinder 701, and the first threaded rod 704 is fixedly connected to the slider 703, then during the rotation of the horizontal rod 802, the first threaded rod 704 is driven downward through the first bevel gear set 803 and the mounting ring 801, and during the downward movement of the first threaded rod 704, the ejector plate 706 is driven downward through the vertical rod 705. When the upper mold 6 is closed with the mold cavity, the staff can add the plastic solution into the mold cavity through the feeding pipe 707 to form a lunch box. When the lunch box is cooled and formed, the user can control the output end of the hydraulic rod 4 to move upward In the process of the output end of the hydraulic rod 4 moving upward, the upper mold 6 is driven to move upward through the mounting plate 5, and gradually loses contact with the formed lunch box, and in the process of the mounting plate 5 moving upward, the first bevel gear set 803 is driven to rotate through the linkage rod 805, the first rack 806, the first gear 804, and the horizontal rod 802, and then in the process of the rotation of the first bevel gear set 803, the first threaded rod 704 is driven to move upward through the mounting ring 801, and in the process of the first threaded rod 704 moving upward, the ejector plate 706 is driven to move upward through the vertical rod 705, and then in the process of the ejector plate 706 moving upward, the formed lunch box is driven to move upward, and after the ejector plate 706 enters the mold cavity, the external air flow can flow into the mold cavity through the vertical groove 702, thereby effectively avoiding the negative pressure between the mold cavity and the lunch box, causing damage to the lunch box and affecting the production efficiency of the lunch box, thereby improving the production efficiency of the lunch box.

[0023] In the process of the hydraulic rod 4 driving the mounting plate 5 to move, the elastic pad 101 can absorb the vibration of the upper mold 6, thereby improving the use effect of the device to a certain extent, and in the process of the mounting plate 5 moving downward, the cavity on the elastic pad 101 sucks air from the outside through the air inlet valve 102, and then in the process of the mounting plate 5 moving upward, the air flow in the cavity is squeezed and tends to flow to the outside, and in the process of the mounting plate 5 moving upward, it gradually contacts the connecting rod 1061 and drives the connecting rod 1061 to move upward. At this time, the first spring 1062 is compressed and has a tendency to recover, and in the lunch box After breaking away from the air groove 103, the connecting groove 1063 is connected with the air pipe 104. At this time, the air flow in the cavity flows into the air cavity through the connecting groove 1063 and the air pipe 104, and is blown into the mold cavity through the air groove 103 on the air cavity, and then flows to the outside through the vertical groove 702 on the bottom wall of the mold cavity. In the process of the air flow flowing to the vertical groove 702, the impurities left after the lunch box is formed can be driven to flow to the vertical groove 702 together. At this time, the filter 105 can filter the impurities in the air flow, so that the user does not need to spend time manually cleaning the impurities in the mold cavity, thereby further improving the production efficiency of the lunch box.

[0024] like Figure 2 、 Figure 3 、 Figure 6 As shown, the workbench 1 is provided with a pusher assembly 9 that cooperates with the ejector plate 706, and the pusher assembly 9 includes a linkage plate 901 symmetrically fixedly installed on the top wall of the workbench 1, and a rotating rod 902 is installed between the two linkage plates 901 for common rotation, a second threaded rod 903 is rotatably installed on the mounting plate 5, and a second bevel gear set 904 is installed between the rotating rod 902 and the second threaded rod 903 for common rotation, and a discharge plate 905 is threadedly installed on the two second threaded rods 903.

[0025] A second gear 906 is fixedly mounted on the rotating rod 902 , and a second rack 907 meshing with the second gear 906 is fixedly mounted on the side wall of the linkage rod 805 .

[0026] By adopting the above technical solution, while the mounting plate 5 drives the formed lunch box to move upward through the ejection assembly 7, the linkage rod 805 drives the second rack 907 to move upward, and when the top wall of the ejection plate 706 is flush with the workbench 1, the first rack 806 is disengaged from the first gear 804. At this time, the ejection plate 706 cannot continue to move upward. At the same time, the linkage rod 805 drives the second rack 907 to contact the second gear 906, and drives the second gear 906 to rotate, and then drives the rotating rod 902 to rotate during the rotation of the second gear 906, and drives the second gear 906 to rotate through the second bevel gear set 904 during the rotation of the rotating rod 902. The threaded rod 903 rotates, and then the discharge plate 905 is driven to move horizontally along the second threaded rod 903 during the rotation of the second threaded rod 903, and gradually contacts the lunch box during the movement of the discharge plate 905 and drives the lunch box to move toward the conveyor belt. Then the conveyor belt can transport the lunch box to the next step, and in the process of the mounting plate 5 moving downward, the second rack 907, the second gear 906, the rotating rod 902, the second bevel gear set 904, and the second threaded rod 903 will drive the discharge plate 905 to reset, so that there is no need for personnel to manually pick up the lunch box throughout the process, which reduces the labor intensity of the staff and further improves the production efficiency of the lunch box.

[0027] like Figure 2 、 Figure 5 As shown, a collecting box 111 is detachably mounted on the side wall of the workbench 1 , and a collecting trough communicating with the collecting box 111 is opened on the side wall of the vertical groove 702 .

[0028] A hollow rod 112 is fixedly mounted on the top wall of the mounting ring 801 , a scraper 113 is fixedly mounted on the side wall of the hollow rod 112 , and a telescopic tube 114 rotatably engaged with the ejection plate 706 is fixedly mounted on the top wall of the hollow rod 112 .

[0029] By adopting the above technical solution, the hollow rod 112 is driven to rotate during the rotation of the mounting ring 801, and the scraper 113 can be driven to rotate during the rotation of the hollow rod 112. Then, the impurities on the top wall of the filter screen 105 can be driven to rotate during the rotation of the scraper 113, and the telescopic tube 114 can be driven to rotate during the rotation of the hollow rod 112. When the ejection plate 706 moves upward, the telescopic tube 114 is stretched. The setting of the telescopic tube 114 can prevent impurities from entering the gap between the hollow rod 112 and the vertical rod 705. Then, under the action of centrifugal force, the impurities move through the collection groove to the collection box 111. Then, when the impurities need to be cleaned, the user only needs to remove the collection box 111 to complete the cleaning of the impurities, thereby further improving the production efficiency of the lunch box.

[0030] like Figure 3 As shown, the bottom wall of the air groove 103 forms an angle of seventy degrees with the horizontal plane.

[0031] By adopting the above technical solution, when the air flow passes through the air groove 103 and flows into the mold cavity, the air flow can be tilted downward by making the bottom wall of the air groove 103 form a seventy-degree angle with the horizontal groove, thereby improving the cleaning effect of the air flow on the mold cavity.

[0032] like Figure 7 As shown, the limiting blocks 12 are symmetrically fixedly installed on the side walls of the discharge plate 905, and the side walls of the limiting blocks 12 away from the discharge plate 905 are inclined.

[0033] By adopting the above technical solution, in the process of the discharge plate 905 driving the lunch box to move, the lunch box can be limited by setting the limit block 12, thereby preventing the lunch box from shifting, and by making the side wall of the limit block 12 an inclined surface, it can be convenient to push the lunch box to be located between the two limit blocks 12.

[0034] Instructions for use: During use, the output end of the hydraulic rod 4 drives the upper mold 6 to move downward through the mounting plate 5. When the upper mold 6 is closed with the mold cavity, the staff can add the plastic solution into the mold cavity through the feeding tube 707 to form a lunch box. After the lunch box is cooled and formed, the mounting plate 5 drives the first threaded rod 704 to move upward through the linkage rod 805, the first rack 806, the first gear 804, the horizontal rod 802, the first bevel gear set 803, and the mounting ring 801. In the process of the first threaded rod 704 moving upward, the vertical rod 705 drives the ejector plate 706 to move upward, and then in the process of the ejector plate 706 moving upward, the formed lunch box is driven to move upward, and after the ejector plate 706 enters the mold cavity, the external airflow can flow into the mold cavity through the vertical groove 702.

[0035] Then the linkage rod 805 drives the second rack 907 to contact the second gear 906, and drives the second gear 906 to rotate, and then drives the rotating rod 902 to rotate during the rotation of the second gear 906, and drives the second threaded rod 903 to rotate through the second bevel gear set 904 during the rotation of the rotating rod 902, and then drives the discharge plate 905 to move horizontally along the second threaded rod 903 during the rotation of the second threaded rod 903, and gradually contacts the lunch box during the movement of the discharge plate 905 and drives the lunch box to move toward the conveyor belt.

[0036] In addition, after the lunch box is out of contact with the air groove 103, the connecting groove 1063 is connected to the air pipe 104. At this time, the air flow in the cavity flows into the air cavity through the connecting groove 1063 and the air pipe 104, and is blown into the mold cavity through the air groove 103 on the air cavity, and then flows to the outside through the vertical groove 702 on the bottom wall of the mold cavity. In the process of the air flow flowing to the vertical groove 702, the impurities left after the lunch box is formed can be driven to flow to the vertical groove 702 together.

[0037] Finally, during the rotation of the mounting ring 801, the hollow rod 112 is driven to rotate, and during the rotation of the hollow rod 112, the scraper 113 can be driven to rotate, and then during the rotation of the scraper 113, the impurities on the top wall of the filter 105 can be driven to rotate, and during the rotation of the hollow rod 112, the telescopic tube 114 is driven to rotate. When the ejection plate 706 moves upward, the telescopic tube 114 will be stretched. The setting of the telescopic tube 114 can prevent impurities from entering the gap between the hollow rod 112 and the vertical rod 705, and then under the action of centrifugal force, the impurities move through the collection trough to the collection box 111.

[0038] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any person skilled in the art who, within the technical scope disclosed by the present invention, makes equivalent substitutions or modifications based on the technical solutions and improved concepts of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. A plastic lunch box forming device, comprising a workbench (1), characterized in that: A support rod (2) is fixedly mounted on the top wall of the workbench (1), a top plate (3) is fixedly mounted on the top end of the support rod (2), a hydraulic rod (4) is evenly fixedly mounted on the top plate (3), a mounting plate (5) is fixedly mounted on the output end of the hydraulic rod (4), an upper mold (6) is fixedly mounted on the mounting plate (5), a mold cavity is opened on the workbench (1), and an ejection assembly (7) is provided on the workbench (1); The ejection assembly (7) includes a vertical groove (702) provided on the workbench (1), a mounting cylinder (701) fixedly installed in the vertical groove (702), a slider (703) vertically slidably installed in the mounting cylinder (701), a first threaded rod (704) fixedly installed on the top wall of the slider (703), a vertical rod (705) fixedly installed on the top wall of the first threaded rod (704), an ejection plate (706) fixedly installed on the top wall of the vertical rod (705), a driving assembly (8) cooperating with the first threaded rod (704) provided on the mounting cylinder (701), and a feeding pipe (707) inserted into the upper mold (6); An elastic pad (101) is installed between the top wall of the mounting plate (5) and the top plate (3), a cavity is provided on the elastic pad (101), and an air inlet valve (102) whose input end is connected to the outside is inserted into the cavity, an air cavity is provided on the workbench (1), an air groove (103) connected to the mold cavity is provided on the air cavity, an air pipe (104) is inserted into the air cavity, a ventilation component (106) is provided on the top plate (3), and a filter (105) is fixedly installed in the vertical groove (702).

2. A plastic lunch box forming device according to claim 1, characterized in that: The driving assembly (8) includes a mounting ring (801) rotatably mounted on the top wall of the mounting cylinder (701), and the mounting ring (801) is threadedly engaged with the first threaded rod (704). A horizontal rod (802) is rotatably mounted on the side wall of the vertical groove (702), and a first bevel gear set (803) is installed between the horizontal rod (802) and the mounting ring (801). A first gear (804) is fixedly mounted on one end of the horizontal rod (802) away from the mounting ring (801). A linkage rod (805) is fixedly mounted on the bottom wall of the mounting plate (5), and a first rack (806) meshing with the first gear (804) is fixedly mounted on the bottom wall of the linkage rod (805).

3. A plastic lunch box forming device according to claim 2, characterized in that: The workbench (1) is provided with a push assembly (9) that cooperates with the ejection plate (706), and the push assembly (9) includes a linkage plate (901) symmetrically fixedly mounted on the top wall of the workbench (1), a rotating rod (902) is rotatably mounted between the two linkage plates (901), a second threaded rod (903) is rotatably mounted on the mounting plate (5), and a second bevel gear set (904) is rotatably mounted between the rotating rod (902) and the second threaded rod (903), and a discharge plate (905) is threadably mounted on the two second threaded rods (903).

4. A plastic lunch box forming device according to claim 3, characterized in that: A second gear (906) is fixedly mounted on the rotating rod (902), and a second rack (907) meshing with the second gear (906) is fixedly mounted on the side wall of the linkage rod (805).

5. A plastic lunch box forming device according to claim 4, characterized in that: The ventilation assembly (106) comprises a connecting rod (1061) vertically slidably mounted on the top plate (3), and a first spring (1062) is installed between the connecting rod (1061) and the top plate (3). A connecting groove (1063) is provided on the connecting rod (1061), and the air pipe (104) is connected to the connecting groove (1063).

6. A plastic lunch box forming device according to claim 5, characterized in that: A collection box (111) is detachably mounted on the side wall of the workbench (1), and a collection slot communicating with the collection box (111) is provided on the side wall of the vertical slot (702).

7. The plastic lunch box forming device according to claim 2, characterized in that: A hollow rod (112) is fixedly mounted on the top wall of the mounting ring (801), a scraper (113) is fixedly mounted on the side wall of the hollow rod (112), and a telescopic tube (114) rotatably engaged with the ejection plate (706) is fixedly mounted on the top wall of the hollow rod (112).

8. The plastic lunch box forming device according to claim 1, characterized in that: The bottom wall of the air groove (103) forms an angle of seventy degrees with the horizontal plane.

9. The plastic lunch box forming device according to claim 3, characterized in that: A limiting block (12) is symmetrically fixedly mounted on the side wall of the discharge plate (905), and the side wall of the limiting block (12) away from the discharge plate (905) is an inclined surface.

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