Plastic lunch box forming device

Abstract

The application discloses a plastic meal box forming device and belongs to the technical field of plastic meal boxes, which comprises a workbench, a supporting rod fixedly installed on the top wall of the workbench and a top plate fixedly installed at the top end of the supporting rod. The ejection plate is arranged. In the process that the mounting plate moves upwards, the first bevel gear set is driven to rotate through the linkage rod, the first rack, the first gear and the horizontal rod. Then in the process that the first bevel gear set rotates, the first threaded rod is driven to move upwards through the mounting ring. In the process that the first threaded rod moves upwards, the ejection plate is driven to move upwards through the vertical rod. Then in the process that the ejection plate moves upwards, the formed meal box is driven to move upwards. After the ejection plate enters the mold cavity, external airflow can flow into the mold cavity through the vertical groove, so that the negative pressure between the mold cavity and the meal box is effectively avoided, the meal box is prevented from being damaged and the production efficiency of the meal box is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of plastic lunch boxes, more specifically, to a plastic lunch box forming device. BACKGROUND

[0002] At present, when preparing plastic lunch boxes, a driving mechanism is usually used to drive the male die mechanism to move towards the female die mechanism, so that the male die mechanism and the female die mechanism are combined, then the molten plastic raw material is injected into the space between the male die mechanism and the female die mechanism by using an injection machine to realize injection molding of the plastic lunch box. However, due to thermal expansion and contraction of the high-temperature molten plastic during the cooling process, the formed plastic lunch box is not easy to separate from the injection mold, causing demolding difficulty. In the prior art, such as the mold for producing plastic lunch boxes disclosed in CN114193708A, tools are used to insert into the prying opening to pry the upper mold from the middle mold. However, the efficiency of prying open by tools is low, thereby affecting the production efficiency of the lunch box, and prying out the lunch box by tools can easily cause damage to the lunch box, which needs to be remelted and formed, further affecting the production efficiency of the lunch box.

[0003] To solve the above problems, some solutions are given in the prior art, such as the mold for producing plastic lunch boxes disclosed in CN115027012A. The device automatically ejects the formed plastic lunch box after opening the mold without manual operation, which avoids damage to the lunch box and improves the production efficiency of the lunch box. However, in actual use, due to the negative pressure between the formed lunch box and the inner wall of the mold cavity, if the lunch box is directly pushed to move by external force, the lunch box will first deform, and 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 under the action of external force, thereby seriously affecting the production efficiency of the lunch box. SUMMARY

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

[0005] To solve the above problems, the present application adopts the following technical solution.

[0006] A plastic lunch box forming device, comprising a workbench, a support rod fixedly installed on the top wall of the workbench, a top plate fixedly installed at the top end of the support rod, a hydraulic rod fixedly installed on the top plate, an installation plate fixedly installed on the output end of the hydraulic rod, an upper mold fixedly installed on the installation plate, and a mold cavity formed in the workbench, and a ejection assembly provided on the workbench.

[0007] The ejection assembly comprises a vertical slot formed on the workbench, a mounting cylinder fixedly installed in the vertical slot, a sliding block vertically slidably installed in the mounting cylinder, a first threaded rod fixedly installed on the top wall of the sliding block, a vertical rod fixedly installed on the top wall of the first threaded rod, an ejection plate fixedly installed on the top wall of the vertical rod, a driving assembly provided on the mounting cylinder and matched with the first threaded rod, and a feeding pipe inserted into the upper die.

[0008] A resilient pad is jointly installed between the top wall of the mounting plate and the top plate, a cavity is formed in the resilient pad, an air inlet valve with an input end communicating with the outside world is inserted into the cavity, an air cavity is formed in the workbench, an air groove communicating with the die cavity is formed in the air cavity, an air pipe is inserted into the air cavity, an air passage assembly is provided on the top plate, and a filter screen is fixedly installed in the vertical slot.

[0009] Further, the driving assembly comprises a mounting ring rotatably installed on the top wall of the mounting cylinder and matched with the first threaded rod, a horizontal rod rotatably installed on the side wall of the vertical slot and jointly installed with the mounting ring through a first bevel gear set, a first gear fixedly installed on the end of the horizontal rod away from the mounting ring, a linkage rod fixedly installed on the bottom wall of the mounting plate, and a first rack fixedly installed on the bottom wall of the linkage rod and engaged with the first gear.

[0010] Further, the workbench is provided with a pushing assembly matched with the ejection plate, the pushing assembly comprises two linkage plates symmetrically fixedly installed on the top wall of the workbench, a rotating rod jointly rotatably installed between the two linkage plates, a second threaded rod rotatably installed on the mounting plate and jointly rotatably installed with the rotating rod through a second bevel gear, and a discharging plate jointly and threadedly installed on the two second threaded rods.

[0011] Further, a second gear is fixedly installed on the rotating rod, and a second rack is fixedly installed on the side wall of the linkage rod and engaged with the second gear.

[0012] Further, the air passage assembly comprises a communication rod vertically slidably installed on the top plate and jointly installed with the top plate through a first spring, a communication groove is formed in the communication rod, and the air pipe communicates with the communication groove.

[0013] Further, a collecting box is detachably installed on the side wall of the workbench, and a collecting groove communicating with the collecting box is formed in the side wall of the vertical slot.

[0014] Further, a hollow rod is fixedly installed on the top wall of the mounting ring, a scraper is fixedly installed on the side wall of the hollow rod, and an extension pipe rotatably matched with the ejection plate is fixedly installed on the top wall of the hollow rod.

[0015] Further, the bottom wall of the air groove is at an angle of 70 degrees with the horizontal plane.

[0016] Further, limit blocks are symmetrically fixed on the side walls of the discharge plate, and the side wall away from the discharge plate is inclined.

[0017] Compared with the prior art, the present application has the following advantages:

[0018] (1) The ejection plate is arranged, and 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, then during the rotation of the first bevel gear set, the first threaded rod is driven to move upward through the mounting ring, and during the upward movement of the first threaded rod, the ejection plate is driven to move upward through the vertical rod, then during the upward movement of the ejection plate, the formed meal box is driven to move upward, and after the ejection plate enters the mold cavity, external airflow can flow into the mold cavity through the vertical groove, thereby effectively avoiding the negative pressure between the mold cavity and the meal box, causing the meal box to be damaged and affecting the production efficiency of the meal box, and the meal box production efficiency is improved;

[0019] (2) The discharge plate is arranged, 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, and during the movement of the discharge plate, the meal box is gradually contacted and driven to move to the conveyor belt, then the conveyor belt can convey the meal box to the next step, thereby eliminating the need for personnel to manually take the meal box, reducing the labor intensity of the workers, and further improving the production efficiency of the meal box;

[0020] (3) The elastic pad is arranged, after the meal box is separated from the air groove, the communication groove is communicated with the air pipe, at this time, the airflow in the cavity flows into the air cavity through the communication groove and the air pipe, and blows into the mold cavity through the air groove on the air cavity, then flows to the outside through the vertical groove on the bottom wall of the mold cavity, and during the airflow flows to the vertical groove, the impurities left after the meal box is formed can be driven to flow to the vertical groove, at this time, the filter screen can filter the impurities in the airflow, thereby eliminating the need for personnel to spend time and manually clean the impurities in the mold cavity, and further improving the production efficiency of the meal box;

[0021] (4) The scheme is characterized in that the scraper is arranged, the hollow rod is driven to rotate in the process of rotating the mounting ring, the scraper is driven to rotate in the process of rotating the hollow rod, the impurities on the top wall of the filter screen are driven to rotate in the process of rotating the scraper, the telescopic pipe is driven to rotate in the process of rotating the hollow rod, the telescopic pipe is stretched in the process of moving the ejection plate upward, the arrangement of the telescopic pipe can avoid the impurities entering the gap between the hollow rod and the vertical rod, the impurities are moved into the collection box through the collection groove under the action of the centrifugal force, and then the user only needs to remove the collection box to clean the impurities, so that the production efficiency of the meal box is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a structural schematic view of the application;

[0023] Figure 2 It is a sectional view of the application;

[0024] Figure 3 It is an enlarged view of A in the application; Figure 2

[0025] Figure 4 It is an enlarged view of B in the application; Figure 2

[0026] Figure 5 It is a sectional view of the ejection plate, the hollow rod, the mounting cylinder and the sliding block of the application;

[0027] Figure 6 It is a combined view of the second bevel gear, the rotating rod and the second threaded rod of the application;

[0028] Figure 7 It is a combined view of the discharge plate and the limiting block of the application.

[0029] Explanation of reference numerals in the drawing:

[0030] 1, workbench; 2, support rod; 3, top plate; 4, hydraulic rod; 5, mounting plate; 6, upper mold;

[0031] 7, ejection assembly; 701, mounting cylinder; 702, vertical groove; 703, sliding block; 704, first threaded rod; 705, vertical rod; 706, ejection plate; 707, feeding pipe;

[0032] 8, driving assembly; 801, mounting ring; 802, horizontal rod; 803, first bevel gear set; 804, first gear; 805, linkage rod; 806, first rack;

[0033] ​​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;

[0034] 101, elastic pad; 102, air inlet valve; 103, air groove; 104, air pipe; 105, filter screen; 106, air vent assembly; 1061, communication rod; 1062, first spring; 1063, communication groove;

[0035] 111, collection box; 112, hollow rod; 113, scraper; 114, telescopic pipe;

[0036] 12, limiting block. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative labor fall within the protection scope of the present application.

[0038] Please refer to Figures 1 to 7 A plastic lunch box forming device, comprising a workbench 1, a support rod 2 is fixedly installed on the top wall of the workbench 1, a top plate 3 is fixedly installed at the top end of the support rod 2, hydraulic rods 4 are uniformly fixedly installed on the top plate 3, mounting plates 5 are fixedly installed on the output ends of the hydraulic rods 4, upper molds 6 are fixedly installed on the mounting plates 5, a mold cavity is formed in the workbench 1, and an ejection assembly 7 is arranged on the workbench 1;

[0039] The ejection assembly 7 comprises a vertical groove 702 formed in the workbench 1, an installation cylinder 701 is fixedly installed in the vertical groove 702, a sliding block 703 is vertically and slidingly installed in the installation cylinder 701, a first threaded rod 704 is fixedly installed on the top wall of the sliding block 703, a vertical rod 705 is fixedly installed on the top wall of the first threaded rod 704, an ejection plate 706 is fixedly installed on the top wall of the vertical rod 705, and a driving assembly 8 that cooperates with the first threaded rod 704 is arranged on the installation cylinder 701, and a feeding pipe 707 is inserted into the upper mold 6;

[0040] The top wall of the mounting plate 5 is jointly mounted with the top plate 3, an elastic pad 101 is arranged between the top wall of the mounting plate 5 and the top plate 3, a cavity is formed in the elastic pad 101, an air inlet valve 102 is inserted into the cavity and communicates with the outside, an air cavity is formed in the workbench 1, an air groove 103 is formed in the air cavity and communicates with the mold cavity, an air pipe 104 is inserted into the air cavity, an air supply assembly 106 is arranged on the top plate 3, and a filter screen 105 is fixedly installed in the vertical groove 702.

[0041] The driving assembly 8 comprises a mounting ring 801 rotatably mounted on the top wall of the mounting cylinder 701, the mounting ring 801 is threadedly connected with the first threaded rod 704, a horizontal rod 802 is rotatably mounted on the side wall of the vertical groove 702, a first bevel gear set 803 is jointly mounted between the horizontal rod 802 and the mounting ring 801, a first gear 804 is fixedly installed on the end of the horizontal rod 802 away from the mounting ring 801, a linkage rod 805 is fixedly installed on the bottom wall of the mounting plate 5, and a first rack 806 engaged with the first gear 804 is fixedly installed on the bottom wall of the linkage rod 805.

[0042] The air supply assembly 106 comprises a communication rod 1061 vertically and slidably installed on the top plate 3, a first spring 1062 is jointly mounted between the communication rod 1061 and the top plate 3, a communication groove 1063 is formed in the communication rod 1061, and the air pipe 104 communicates with the communication groove 1063.

[0043] In use, the output end of the hydraulic rod 4 drives the upper mold 6 to move downward through the mounting plate 5, and in the process of moving downward of the mounting plate 5, the first rack 806 is driven to move downward through the linkage rod 805, in the process of moving downward of the first rack 806, the horizontal rod 802 is driven to rotate through the first gear 804, since the slider 703 is vertically slidingly fitted with the mounting cylinder 701, and the first threaded rod 704 is fixedly connected with the slider 703, then in the process of rotating of the horizontal rod 802, the first threaded rod 704 is driven to move downward through the first bevel gear set 803, the mounting ring 801, and in the process of moving downward of the first threaded rod 704, the ejection plate 706 is driven to move downward through the vertical rod 705, when the upper mold 6 and the mold cavity are combined, the worker can add the plastic solution into the mold cavity through the feeding pipe 707 and form the meal box, when the meal box is cooled and formed, the user can control the output end of the hydraulic rod 4 to move upward, in the process of moving upward of the output end of the hydraulic rod 4, the upper mold 6 is driven to move upward through the mounting plate 5, and gradually separates from the contact with the formed meal box, and in the process of moving upward of the mounting plate 5, the first bevel gear set 803 is driven to rotate through the linkage rod 805, the first rack 806, the first gear 804, the horizontal rod 802, then in the process of rotating 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 moving upward of the first threaded rod 704, the ejection plate 706 is driven to move upward through the vertical rod 705, then in the process of moving upward of the ejection plate 706, the formed meal box is driven to move upward, and after the ejection plate 706 enters the mold cavity, the external airflow can flow into the mold cavity through the vertical slot 702, thereby effectively avoiding the negative pressure between the mold cavity and the meal box, causing the meal box to be damaged and affecting the production efficiency of the meal box, playing a role in improving the production efficiency of the meal box.

[0044] In the process that the hydraulic rod 4 drives the installation plate 5 to move, the elastic pad 101 is arranged to absorb the vibration suffered by the upper die 6, so that the use effect of the device is improved to a certain extent, and in the process that the installation plate 5 moves downwards, the cavity on the elastic pad 101 inhales air from the outside through the air inlet valve 102, then in the process that the installation plate 5 moves upwards, the airflow in the cavity is extruded and has a tendency to flow to the outside, gradually contacts the communication rod 1061 in the process that the installation plate 5 moves upwards, and drives the communication rod 1061 to move upwards, at this time, the first spring 1062 is compressed and has a restoring tendency, and after the meal box is separated from the air groove 103, the communication groove 1063 is communicated with the air pipe 104, at this time, the airflow in the cavity flows to the air cavity through the communication groove 1063 and the air pipe 104, and blows to 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, and in the process that the airflow flows to the vertical groove 702, the impurities left after the meal box is formed can be driven to flow to the vertical groove 702 together, at this time, the filter screen 105 can filter the impurities in the airflow, so that the user does not need to spend time to manually clean the impurities in the mold cavity, and the production efficiency of the meal box is further improved.

[0045] As shown in Figure 2 , Figure 3 , Figure 6 , the workbench 1 is provided with a pushing assembly 9 matched with the ejection plate 706, the pushing assembly 9 comprises two linkage plates 901 fixedly installed on the top wall of the workbench 1 in symmetry, a rotating rod 902 is rotatably installed between the two linkage plates 901, a second threaded rod 903 is rotatably installed on the installation plate 5, a second bevel gear set 904 is rotatably installed between the rotating rod 902 and the second threaded rod 903, and a discharge plate 905 is threadedly installed on the two second threaded rods 903.

[0046] A second gear 906 is fixedly installed on the rotating rod 902, and a second rack 907 engaged with the second gear 906 is fixedly installed on the side wall of the linkage rod 805.

[0047] By adopting the above technical scheme, when the installation plate 5 is driven upward by the ejection assembly 7 after forming the meal box, 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 out of contact with the first gear 804, at which time the ejection plate 706 cannot continue to move upward, and 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 in the process of rotation of the second gear 906, and drives the second threaded rod 903 to rotate in the process of rotation of the rotating rod 902 through the second bevel gear set 904, and then drives the discharge plate 905 to move horizontally along the second threaded rod 903 in the process of rotation of the second threaded rod 903, and gradually contacts the meal box in the process of movement of the discharge plate 905 and drives the meal box to move to the conveyor belt, and then the conveyor belt can transport the meal box to the next step, and the discharge plate 905 is reset by the second rack 907, the second gear 906, the rotating rod 902, the second bevel gear set 904, and the second threaded rod 903 in the process of downward movement of the installation plate 5, so that the meal box does not need to be manually taken by the user throughout the process, which reduces the labor intensity of the workers and further improves the production efficiency of the meal box.

[0048] As shown in Figure 2 , Figure 5 , the side wall of the workbench 1 is detachably provided with a collection box 111, and the side wall of the vertical groove 702 is provided with a collection groove in communication with the collection box 111.

[0049] The top wall of the mounting ring 801 is fixedly provided with a hollow rod 112, the side wall of the hollow rod 112 is fixedly provided with a scraper 113, and the top wall of the hollow rod 112 is fixedly provided with an extension pipe 114 in rotational cooperation with the ejection plate 706.

[0050] By adopting the above technical scheme, the hollow rod 112 is driven to rotate in the process of rotation of the mounting ring 801, and the scraper 113 is driven to rotate in the process of rotation of the hollow rod 112, and the impurities on the top wall of the filter screen 105 are driven to rotate in the process of rotation of the scraper 113, and the extension pipe 114 is driven to rotate in the process of rotation of the hollow rod 112, and the extension pipe 114 is stretched in the process of upward movement of the ejection plate 706, and the setting of the extension pipe 114 can avoid the impurities entering the gap between the hollow rod 112 and the vertical rod 705, and then the impurities move into the collection box 111 through the collection groove under the action of centrifugal force, and 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, further improving the production efficiency of the meal box.

[0051] As shown in Figure 3 , the bottom wall of the air groove 103 forms a seventy-degree angle with the horizontal plane.

[0052] By adopting the above technical scheme, in the process that the air flow flows to the mold cavity through the air groove 103, the air flow is inclined to flow 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.

[0053] As shown in Figure 7 The side wall of the discharge plate 905 is symmetrically fixedly installed with limit blocks 12, and the side wall of the limit block 12 away from the discharge plate 905 is a slope.

[0054] By adopting the above technical scheme, in the process that the discharge plate 905 drives the lunch box to move, the limit blocks 12 can be used to limit the lunch box, thereby avoiding the deviation of the lunch box, and by making the side wall of the limit block 12 a slope, the lunch box can be conveniently pushed between the two limit blocks 12.

[0055] Method for use: when in 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 and the mold cavity are combined, the worker can add the plastic solution into the mold cavity through the feeding pipe 707 and form the lunch box, when 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, and drives the ejection plate 706 to move upward through the vertical rod 705 in the process that the first threaded rod 704 moves upward, then drives the formed lunch box to move upward in the process that the ejection plate 706 moves upward, and after the ejection plate 706 enters the mold cavity, the external air flow can flow into the mold cavity through the vertical groove 702.

[0056] Then the linkage rod 805 drives the second rack 907 to contact the second gear 906, and drives the second gear 906 to rotate, then drives the rotating rod 902 to rotate in the process that the second gear 906 rotates, and drives the second threaded rod 903 to rotate through the second bevel gear set 904 in the process that the rotating rod 902 rotates, then drives the discharge plate 905 to move horizontally along the second threaded rod 903 in the process that the second threaded rod 903 rotates, and gradually contacts the lunch box and drives the lunch box to move to the conveyor belt in the process that the discharge plate 905 moves.

[0057] In addition, after the lunch box is separated from the air groove 103, the communication groove 1063 is communicated with the air pipe 104, at this time, the air flow in the cavity flows to the air cavity through the communication groove 1063 and the air pipe 104, and blows to the mold cavity through the air groove 103 on the air cavity, then flows to the outside through the vertical groove 702 on the bottom wall of the mold cavity, and in the process that the air flow flows to the vertical groove 702, the impurities left after the lunch box is formed can be driven to flow to the vertical groove 702.

[0058] Finally, the hollow rod 112 is driven to rotate in the process that the installation ring 801 rotates, and the scraper 113 can be driven to rotate in the process that the hollow rod 112 rotates, then the impurities on the top wall of the filter screen 105 can be driven to rotate in the process that the scraper 113 rotates, and the telescopic pipe 114 is driven to rotate in the process that the hollow rod 112 rotates, the telescopic pipe 114 is stretched in the process that the ejection plate 706 moves upward, the setting of the telescopic pipe 114 can avoid the impurities entering the gap between the hollow rod 112 and the vertical rod 705, then the impurities move into the collecting box 111 through the collecting groove under the action of the centrifugal force.

[0059] The above merely provides the preferred embodiments of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent substitutions or changes according to the technical solution and the improvement concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A plastic meal box forming device comprising a worktable (1), characterized in that: The top wall of the workbench (1) is fixedly installed with a support rod (2), the top end of the support rod (2) is fixedly installed with a top plate (3), the top plate (3) is uniformly fixedly installed with a hydraulic rod (4), the output end of the hydraulic rod (4) is fixedly installed with a mounting plate (5), the mounting plate (5) is fixedly installed with an upper mold (6), and the workbench (1) is provided with a mold cavity, and the workbench (1) is provided with an ejection assembly (7). The ejection assembly (7) comprises a vertical slot (702) formed in the workbench (1), a mounting cylinder (701) is fixedly installed in the vertical slot (702), a sliding block (703) is vertically and slidingly installed in the mounting cylinder (701), a first threaded rod (704) is fixedly installed on the top wall of the sliding block (703), a vertical rod (705) is fixedly installed on the top wall of the first threaded rod (704), an ejection plate (706) is fixedly installed on the top wall of the vertical rod (705), and a drive assembly (8) cooperating with the first threaded rod (704) is arranged on the mounting cylinder (701), and a feeding pipe (707) is inserted into the upper mold (6). The top wall of the mounting plate (5) and the top plate (3) are jointly installed with an elastic pad (101), the elastic pad (101) is provided with a cavity, and an air inlet valve (102) in communication with the outside is inserted into the cavity, the workbench (1) is provided with an air cavity, the air cavity is provided with an air groove (103) in communication with the mold cavity, an air pipe (104) is inserted into the air cavity, the top plate (3) is provided with an air passage assembly (106), and a filter screen (105) is fixedly installed in the vertical slot (702).

2. A plastic meal tray forming apparatus as claimed in claim 1, wherein: The drive assembly (8) comprises a mounting ring (801) rotatably installed on the top wall of the mounting cylinder (701), and the mounting ring (801) is in threaded connection with the first threaded rod (704), a horizontal rod (802) is rotatably installed on the side wall of the vertical slot (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 installed on the end of the horizontal rod (802) away from the mounting ring (801), a linkage rod (805) is fixedly installed on the bottom wall of the mounting plate (5), and a first rack (806) in meshing connection with the first gear (804) is fixedly installed on the bottom wall of the linkage rod (805).

3. A plastic meal tray forming apparatus as claimed in claim 2, wherein: The workbench (1) is provided with a pushing assembly (9) cooperating with the ejection plate (706), the pushing assembly (9) comprises two linkage plates (901) symmetrically fixedly installed on the top wall of the workbench (1), a rotating rod (902) is jointly rotatably installed between the two linkage plates (901), a second threaded rod (903) is rotatably installed on the mounting plate (5), a second bevel gear set (904) is jointly rotatably installed between the rotating rod (902) and the second threaded rod (903), and a discharging plate (905) is jointly and threadedly installed on the two second threaded rods (903).

4. The plastic meal box forming apparatus according to claim 3, wherein: The rotating rod (902) is fixedly provided with a second gear (906), and the sidewall of the linkage rod (805) is fixedly provided with a second rack (907) engaged with the second gear (906).

5. A plastic meal tray forming apparatus as claimed in claim 4 wherein: The ventilation assembly (106) comprises a communication rod (1061) vertically and slidably arranged on the top plate (3), and a first spring (1062) is arranged between the communication rod (1061) and the top plate (3); the communication rod (1061) is provided with a communication groove (1063), and the air pipe (104) is communicated with the communication groove (1063).

6. A plastic meal tray forming apparatus as claimed in claim 5 wherein: The sidewall of the workbench (1) is detachably provided with a collecting box (111), and the sidewall of the vertical groove (702) is provided with a collecting groove (111) communicated with the collecting box (111).

7. The plastic meal box forming apparatus according to claim 2, wherein: The top wall of the mounting ring (801) is fixedly provided with a hollow rod (112), the sidewall of the hollow rod (112) is fixedly provided with a scraper (113), and the top wall of the hollow rod (112) is fixedly provided with an extension pipe (114) rotationally matched with the ejection plate (706).

8. The plastic meal box forming apparatus according to claim 1, wherein: The bottom wall of the air groove (103) forms a seventy-degree angle with the horizontal plane.

9. The plastic meal box forming apparatus according to claim 3, wherein: The sidewall of the discharging plate (905) is symmetrically fixedly provided with a limiting block (12), and the sidewall of the limiting block (12) away from the discharging plate (905) is inclined.

Images