Full-automatic plastic uptake plate making machine for plastic tray production

Abstract

The invention relates to the technical field of plastic tray production, in particular to a full-automatic plastic uptake plate making machine for plastic tray production, which comprises a working box and a mounting plate fixedly arranged at the top of the working box, a first cylinder longitudinally arranged is fixedly mounted on the front surface of the mounting plate, and a heat preservation cover is fixedly mounted at the extending end of the first cylinder; a positioning mechanism used for preventing operators from being scalded is arranged on one side of the first air cylinder, and a forming mechanism used for shaping the plastic tray is arranged in the working box. A turnover rod is driven to rotate through a first fixing pin, so that a lifting rod drives a piston to descend, at the moment, the piston blocks the input end of a second water inlet pipe, the extending end of a second air cylinder is continuously controlled to extend to the longest, a rubber ring is extruded and deformed, and the sealing performance between a baffle and a guide sleeve is improved; and water cooling is conducted on the bottom of the mold, and the situation that adhesion occurs in the demolding process of the plastic tray, and the product quality of the plastic tray is affected is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of plastic pallet production, and particularly to a fully automatic thermoforming and plate-making machine for plastic pallet production. Background Art

[0002] A fully automatic thermoforming and plate-making machine for plastic pallet production is a device integrating automation functions, which is used to process plastic sheets into forming molds of plastic pallets through processes such as heating, thermoforming, and cooling; it combines thermoforming and plate-making functions, can efficiently and accurately produce plastic pallets of various specifications and shapes, and is widely used in industries such as logistics, warehousing, food packaging, and electronic component packaging;

[0003] After the existing thermoforming and plate-making machine completes the thermoforming of the plastic pallet, the plastic pallet is shaped by natural cooling. Since the plastic pallet blocks the mold from the external air, its cooling speed is slow, resulting in a relatively high surface temperature, and it is prone to adhesion during the demolding process of the plastic pallet, affecting the product quality of the plastic pallet; at the same time, after the existing thermoforming and plate-making machine is used for a long time, the surface temperature of the pressing frame for positioning the plastic pallet is relatively high, and it is easy to cause harm to the operator during the process of adjusting the position of the pressing frame. Summary of the Invention

[0004] The technical problems solved by this solution are as follows:

[0005] (1) How to solve the problem that since the plastic pallet blocks the mold from the external air, its surface temperature is relatively high, and it is prone to adhesion during the demolding process of the plastic pallet, affecting the product quality of the plastic pallet;

[0006] (2) How to solve the problem that after long-term use, the surface temperature of the pressing frame for positioning the plastic pallet is relatively high, and it is easy to cause harm to the operator during the process of adjusting the position of the pressing frame.

[0007] The object of the present invention can be achieved by the following technical solutions: A fully automatic thermoforming and plate-making machine for plastic pallet production, including a working box and a mounting plate fixedly arranged on its top, a longitudinally arranged first cylinder is fixedly installed on the front surface of the mounting plate, the extending end of the first cylinder is fixedly installed with a heat preservation cover, and a positioning mechanism for preventing the operator from being scalded is arranged on one side of the first cylinder, and a forming mechanism for shaping the plastic pallet is arranged inside the working box;

[0008] The forming mechanism includes a guiding sleeve fixedly inserted into the top of the working box, a mold is slidably arranged inside the guiding sleeve, an air suction cavity is opened inside the mold, the air suction cavity is communicated with the inside of the guiding sleeve, and a cooling unit for water-cooling the mold is arranged on one side of the guiding sleeve.

[0009] A further technical improvement of the present invention lies in that: a longitudinally arranged second cylinder is fixedly installed at the bottom of the inner wall of the working box, the extending end of the second cylinder is fixedly connected to the bottom of the mold, and a baffle plate and a first fixing pin are also fixedly installed at the extending end of the second cylinder, and the baffle plate is located between the first fixing pin and the mold.

[0010] A further technical improvement of the present invention lies in that: a vacuum pump is arranged on one side of the second cylinder, the input end of the vacuum pump is communicated with a first hose, the input end of the first hose fixedly penetrates through the baffle plate and is communicated with the suction cavity, and a rubber ring is fixedly installed at the top edge of the baffle plate.

[0011] A further technical improvement of the present invention lies in that: the cooling unit includes an adjusting cylinder fixedly connected to the inner wall of the working box, the middle parts of both sides of the adjusting cylinder are respectively communicated with a first water inlet pipe and a second water inlet pipe, the output end of the second water inlet pipe is communicated with the guiding sleeve, and the position of the output end of the second water inlet pipe corresponds to the position of the mold.

[0012] A further technical improvement of the present invention lies in that: a piston is slidably arranged in the inner wall of the adjusting cylinder, a lifting rod is fixedly connected to the bottom of the piston, the bottom end of the lifting rod movably penetrates through the adjusting cylinder and is fixedly connected to a second fixing pin, and a thrust spring is elastically arranged between the bottom of the piston and the inner wall of the adjusting cylinder.

[0013] A further technical improvement of the present invention lies in that: a turning rod is rotatably arranged on the inner wall of the working box, one end of the turning rod is slidably connected to the first fixing pin, the other end of the turning rod is slidably connected to the second fixing pin, a water return pipe is arranged above the turning rod, and the input end of the water return pipe is communicated with the bottom of the baffle plate.

[0014] A further technical improvement of the present invention lies in that: a water storage tank is fixedly installed on the side of the working box, a water pump is arranged on the front of the water storage tank, the output end of the water pump is communicated with the water storage tank, and the input end of the water pump is communicated with the output end of the return water pipe. The input end of the first water inlet pipe is communicated with the bottom of the water storage tank; by controlling the extension end of the second air cylinder to extend to a set length, the rubber ring contacts the bottom of the guide sleeve. At the same time, the vacuum pump is turned on, and the air between the mold and the raw material is absorbed through the suction cavity. In cooperation with the rising of the mold, thermoforming of the raw material is carried out to obtain a plastic tray. The turning rod is driven to rotate by the first fixing pin, so that the lifting rod drives the piston to descend. At this time, the mold is separated from the output end of the second water inlet pipe, and the piston still blocks the input end of the second water inlet pipe. Continue to control the extension end of the second air cylinder to extend to the longest, and the rubber ring is squeezed and deformed, increasing the sealing performance between the baffle and the guide sleeve. At the same time, both the input end of the second water inlet pipe and the output end of the first water inlet pipe are separated from the piston, so that the clear water in the water storage tank is injected into the guide sleeve to cool the bottom of the mold by water cooling, thereby accelerating the cooling speed of the mold and avoiding adhesion during the demolding process of the plastic tray, which affects the product quality of the plastic tray.

[0015] A further technical improvement of the present invention lies in that: the positioning mechanism includes a first guide sleeve fixedly connected to the side of the working box. A square rod is slidably sleeved in the first guide sleeve. The square rod is longitudinally arranged, and a first roller and a second roller are rotatably arranged in the middle of the square rod.

[0016] A further technical improvement of the present invention lies in that: two rotating seats are fixedly installed on the top of the working box. A pressing frame for positioning the plastic tray is rotatably arranged between the two rotating seats. One end of the pressing frame is located between the first roller and the second roller; the position of the other end of the pressing frame corresponds to the position of the opening of the guide sleeve, and a fixing plate is fixedly installed in the middle of the pressing frame away from the first roller. A tension spring is fixedly connected between the fixing plate and the working box.

[0017] A further technical improvement of the present invention lies in that: a turning frame is rotatably arranged on the front of the mounting plate. The extension end of the first air cylinder is movably connected to one end of the turning frame through a lever. The other end of the turning frame is movably connected to the top of the square rod; by controlling the extension end of the first air cylinder to contract to half of its length, the heat preservation cover rises. At this time, the first roller does not contact the pressing frame. Continue to control the extension end of the first air cylinder to contract to the shortest, and the first roller provides rolling pressure on the pressing frame to make it turn over. The heat preservation cover continues to rise. During the rising process of the heat preservation cover, it avoids hindering the turning over of the pressing frame. At the same time, it is convenient to unload the shaped plastic tray and avoid the high temperature on the surface of the pressing frame from harming the operator.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] When the present invention is in use, by controlling the extension end of the second cylinder to extend to a set length, the rubber ring contacts the bottom of the guide sleeve. At the same time, the vacuum pump is turned on, and the air between the mold and the raw material is absorbed through the suction cavity. In cooperation with the rising of the mold, thermoforming of the raw material is carried out to obtain a plastic tray. By driving the turning rod to rotate through the first fixing pin, the lifting rod drives the piston to descend. At this time, the mold is separated from the output end of the second water inlet pipe, and the piston still blocks the input end of the second water inlet pipe. Continuing to control the extension end of the second cylinder to extend to the longest, the rubber ring is squeezed and deformed, increasing the sealing performance between the baffle and the guide sleeve. At the same time, both the input end of the second water inlet pipe and the output end of the first water inlet pipe are separated from the piston, so that the clear water in the water storage tank is injected into the guide sleeve to cool the bottom of the mold by water cooling, thereby accelerating the cooling speed of the mold and avoiding adhesion during the demolding process of the plastic tray, which affects the product quality of the plastic tray.

[0020] When the present invention is in use, by controlling the extension end of the first cylinder to contract to half of its length, the heat preservation cover rises. At this time, the first roller does not contact the pressing frame. Continuing to control the extension end of the first cylinder to contract to the shortest, rolling pressing is provided to the pressing frame through the first roller to make it turn over, and the heat preservation cover continues to rise. During the rising process of the heat preservation cover, it is avoided to hinder the turning over of the pressing frame. At the same time, it is convenient to unload the shaped plastic tray and avoid the high temperature on the surface of the pressing frame from causing harm to the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] For the convenience of those skilled in the art to understand, the present invention will be further described below with reference to the accompanying drawings.

[0022] Figure 1 is a three-dimensional schematic diagram of the overall structure of the present invention;

[0023] Figure 2 is a schematic diagram of the overall structure of the present invention;

[0024] Figure 3 is a schematic diagram of the structure of the forming mechanism of the present invention;

[0025] Figure 4 is a three-dimensional schematic diagram of a partial structure of the forming mechanism of the present invention;

[0026] Figure 5 is a schematic diagram of the structure of the positioning mechanism of the present invention;

[0027] Figure 6 is a three-dimensional schematic diagram of a partial structure of the positioning mechanism of the present invention.

[0028] In the figure: 1. First cylinder; 2. Heat preservation cover; 3. Water storage tank; 4. Water pump; 5. Return water pipe; 6. Working box; 7. Positioning mechanism; 8. Mounting plate; 9. Forming mechanism; 10. Vacuum pump; 11. Pushing rod; 701. Tipping frame; 702. Pressing frame; 703. Fixed plate; 704. Rotating seat; 705. First guide sleeve; 706. Second roller; 707. First roller; 708. Square rod; 901. Mold; 902. Second water inlet pipe; 903. Piston; 904. First water inlet pipe; 905. Adjusting cylinder; 906. Lifting rod; 907. Second fixing pin; 908. Tipping rod; 909. Second cylinder; 910. First hose; 911. Baffle plate; 912. Suction cavity; 913. Guide sleeve; 914. Rubber ring; 915. First fixing pin. Detailed implementation manners

[0029] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative work shall fall within the protection scope of the present invention.

[0030] Please refer to Figures 1-6 As shown, a fully automatic plastic tray thermoforming and blanking machine for plastic tray production includes a working box 6 and a mounting plate 8 fixedly arranged on the top thereof. A longitudinally arranged first cylinder 1 is fixedly installed on the front surface of the mounting plate 8. The extending end of the first cylinder 1 is fixedly installed with a heat preservation cover 2, and a positioning mechanism 7 for preventing the operator from being scalded is arranged on one side of the first cylinder 1. A forming mechanism 9 for shaping the plastic tray is arranged inside the working box 6.

[0031] Please refer to Figure 2 and Figure 3 As shown, the above-mentioned forming mechanism 9 includes a guide sleeve 9^{13} fixedly inserted on the top of the working box 6. A mold 9^{01} is slidably arranged inside the guide sleeve 9^{13}. An air suction cavity 9^{12} is formed inside the mold 9^{01}, and the air suction cavity 9^{12} is communicated with the inside of the guide sleeve 9^{13}. A cooling unit for cooling the mold 9^{01} with water is arranged on one side of the guide sleeve 9^{13}.

[0032] Please refer to Figure 2 and Figure 3 As shown, a longitudinally arranged second cylinder 9^{09} is fixedly installed on the bottom of the inner wall of the above-mentioned working box 6. The extending end of the second cylinder 9^{09} is fixedly connected to the bottom of the mold 9^{01}, and a baffle plate 9^{11} and a first fixing pin 9^{15} are also fixedly installed on the extending end of the second cylinder 9^{09}. The baffle plate 9^{11} is located between the first fixing pin 9^{15} and the mold 9^{01}.

[0033] Please refer to Figure 2 andFigure 3 As shown, a vacuum pump 10 is provided on one side of the second cylinder 909 described above. The input end of the vacuum pump 10 is connected to a first hose 910. The input end of the first hose 910 fixedly penetrates through a baffle 911 and is connected to a suction chamber 912. A rubber ring 914 is fixedly installed at the top edge of the baffle 911.

[0034] Please refer to Figure 3 and Figure 4 As shown, the above-mentioned cooling unit includes an adjusting cylinder 905 fixedly connected to the inner wall of the working box 6. A first water inlet pipe 904 and a second water inlet pipe 902 are respectively connected to both sides of the middle of the adjusting cylinder 905. The output end of the second water inlet pipe 902 is connected to a guiding sleeve 913, and the position of the output end of the second water inlet pipe 902 corresponds to the position of the mold 901.

[0035] Please refer to Figure 3 As shown, a piston 903 is slidably arranged on the inner wall of the adjusting cylinder 905 described above. A lifting rod 906 is fixedly connected to the bottom of the piston 903. The bottom end of the lifting rod 906 movably penetrates through the adjusting cylinder 905 and is fixedly connected to a second fixing pin 907. A thrust spring is elastically arranged between the bottom of the piston 903 and the inner wall of the adjusting cylinder 905.

[0036] Please refer to Figure 3 and Figure 4 As shown, a turning rod 908 is rotatably arranged on the inner wall of the working box 6 described above. One end of the turning rod 908 is slidably connected to a first fixing pin 915, and the other end of the turning rod 908 is slidably connected to a second fixing pin 907. A water return pipe 5 is arranged above the turning rod 908. The input end of the water return pipe 5 is connected to the bottom of the baffle 911.

[0037] Please refer to Figure 2 and Figure 3As shown in the figure, a water storage tank 3 is fixedly installed on the side of the above-mentioned working box 6. A water pump 4 is arranged on the front of the water storage tank 3. The output end of the water pump 4 is communicated with the water storage tank 3, and the input end of the water pump 4 is communicated with the output end of the return water pipe 5. The input end of the first water inlet pipe 904 is communicated with the bottom of the water storage tank 3; by controlling the extension end of the second cylinder 909 to extend to a set length, the rubber ring 914 contacts the bottom of the guide sleeve 913. At the same time, the vacuum pump 10 is turned on, and the air between the mold 901 and the raw material is absorbed through the air suction cavity 912. In cooperation with the rising of the mold 901, the raw material is thermoformed by suction to obtain a plastic tray. The turning rod 908 is driven to rotate by the first fixing pin 915, so that the lifting rod 906 drives the piston 903 to descend. At this time, the mold 901 is separated from the output end of the second water inlet pipe 902, and the piston 903 still blocks the input end of the second water inlet pipe 902. Continue to control the extension end of the second cylinder 909 to extend to the longest, and the rubber ring 914 is squeezed and deformed, increasing the sealing performance between the baffle 911 and the guide sleeve 913. At the same time, both the input end of the second water inlet pipe 902 and the output end of the first water inlet pipe 904 are separated from the piston 903, so that the clear water in the water storage tank 3 is injected into the guide sleeve 913 to cool the bottom of the mold 901 by water cooling, thereby accelerating the cooling speed of the mold 901 and avoiding adhesion during the demolding process of the plastic tray, which affects the product quality of the plastic tray.

[0038] Please refer to Figure 2 and Figure 5 As shown in the figure, the above-mentioned positioning mechanism 7 includes a first guide sleeve 705 fixedly connected to the side of the working box 6. A square rod 708 is slidably sleeved in the first guide sleeve 705. The square rod 708 is longitudinally arranged, and a first roller 707 and a second roller 706 are rotatably arranged in the middle of the square rod 708.

[0039] Please refer to Figure 5 and Figure 6 As shown in the figure, two rotating seats 704 are fixedly installed on the top of the above-mentioned working box 6. A pressing frame 702 for positioning the plastic tray is rotatably arranged between the two rotating seats 704. One end of the pressing frame 702 is located between the first roller 707 and the second roller 706.

[0040] Please refer to Figure 5 As shown in the figure, the position of the other end of the above-mentioned pressing frame 702 corresponds to the position of the opening of the guide sleeve 913. A fixing plate 703 is fixedly installed in the middle of the pressing frame 702 away from the first roller 707. A tension spring is fixedly connected between the fixing plate 703 and the working box 6.

[0041] Please refer to Figure 5As shown, a tipping frame 701 is rotatably arranged on the front surface of the above-mentioned mounting plate 8. The extending end of the first cylinder 1 is movably connected to one end of the tipping frame 701 through a lever 11, and the other end of the tipping frame 701 is movably connected to the top of a square rod 708. By controlling the extending end of the first cylinder 1 to contract to half of its length, the heat preservation cover 2 rises. At this time, the first roller 707 does not contact the pressing frame 702. Then, continue to control the extending end of the first cylinder 1 to contract to the shortest length. The first roller 707 provides rolling pressure to the pressing frame 702 to make it turn over, and the heat preservation cover 2 continues to rise. During the rising process of the heat preservation cover 2, it is avoided to hinder the turning over of the pressing frame 702. At the same time, it is convenient to unload the shaped plastic tray and avoid the high temperature on the surface of the pressing frame 702 from hurting the operator.

[0042] Please refer to Figure 5 and Figure 6 As shown, a second guide sleeve for guiding the square rod 708 is also fixedly installed on the above-mentioned mounting plate 8. Both the first roller 707 and the second roller 706 are located between the first guide sleeve 705 and the second guide sleeve.

[0043] Please refer to Figure 2 and Figure 3 As shown, a number of electric heating rods are arranged inside the above-mentioned heat preservation cover 2, and the positions of the number of electric heating rods correspond to the positions of the openings of the guide sleeves 913.

[0044] Working principle: When the present invention is in use, first, as Figure 2 and Figure 3 shown, after the raw materials are placed on the top of the guide sleeve 913, by controlling the extending end of the first cylinder 1 to extend to the longest, the heat preservation cover 2 is brought close to the raw materials. As Figure 2 and Figure 5 shown, the tipping frame 701 is driven to rotate by the lever 11, so that the square rod 708 drives the second roller 706 to move upward. The second roller 706 provides rolling thrust to the pressing frame 702, and with the action of the tension spring, the friction between the pressing frame 702 and the raw materials is increased to prevent the raw materials from shifting. Then, a number of electric heating rods are turned on to uniformly heat the raw materials to soften them. As Figure 2 , Figure 5 and Figure 6As shown, after the plastic tray is shaped, by controlling the extension end of the first cylinder 1 to shrink to half of its length, the heat preservation cover 2 rises. At this time, the first roller 707 does not contact the pressing frame 702. Then, continue to control the extension end of the first cylinder 1 to shrink to the shortest length, and use the first roller 707 to provide rolling pressure to the pressing frame 702 to make it flip. The heat preservation cover 2 continues to rise. During the rising process of the heat preservation cover 2, it is avoided to hinder the flipping of the pressing frame 702. At the same time, it is convenient to unload the shaped plastic tray and avoid the high temperature on the surface of the pressing frame 702 from hurting the operator; As Figure 2 and Figure 3 As shown, after the raw material is uniformly heated, control the extension end of the second cylinder 909 to extend to the set length, so that the rubber ring 914 contacts the bottom of the guide sleeve 913. At the same time, turn on the vacuum pump 10 to absorb the air between the mold 901 and the raw material through the suction cavity 912, and cooperate with the rising of the mold 901 to perform thermoforming on the raw material to obtain a plastic tray. Drive the flipping rod 908 to rotate through the first fixing pin 915, so that the lifting rod 906 drives the piston 903 to descend. At this time, the mold 901 is separated from the output end of the second water inlet pipe 902, and the piston 903 still blocks the input end of the second water inlet pipe 902. As Figure 3 and Figure 4 As shown, continue to control the extension end of the second cylinder 909 to extend to the longest length, and the rubber ring 914 is squeezed and deformed to increase the sealing performance between the baffle 911 and the guide sleeve 913. At the same time, both the input end of the second water inlet pipe 902 and the output end of the first water inlet pipe 904 are separated from the piston 903, so that the clear water in the water storage tank 3 is injected into the guide sleeve 913 to perform water cooling on the bottom of the mold 901, thereby accelerating the cooling speed of the mold 901 and avoiding adhesion during the demolding process of the plastic tray, which affects the product quality of the plastic tray; After the cooling of the mold 901 is completed, by turning on the water pump 4, it is convenient to pump the clear water back into the water storage tank 3 through the return pipe 5.

[0045] The above is only a preferred embodiment of the present invention, and it is not intended to limit the present invention in any form. Although the present invention has been disclosed above with the preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to be equivalent embodiments with equivalent changes, but as long as it does not depart from the technical content of the present invention, any brief modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. An automatic plastic tray production blister board machine, including a working box (6) and a mounting plate (8) fixedly arranged on its top, characterized in that: A first cylinder (1) is fixedly installed on the front surface of the mounting plate (8). The extending end of the first cylinder (1) is fixedly installed with a heat preservation cover (2). And a positioning mechanism (7) for preventing the operator from being scalded is arranged on one side of the first cylinder (1). A shaping mechanism (9) for shaping the plastic tray is arranged inside the working box (6). The shaping mechanism (9) includes a guiding sleeve (913) fixedly inserted at the top of the working box (6). A mold (901) is slidably arranged inside the guiding sleeve (913). An air suction cavity (912) is formed inside the mold (901). The air suction cavity (912) is communicated with the inside of the guiding sleeve (913). A cooling unit for cooling the mold (901) by water is arranged on one side of the guiding sleeve (913).

2. The fully automatic plastic tray production blister and stenciling machine according to claim 1, wherein, A second cylinder (909) is fixedly installed at the bottom of the inner wall of the working box (6). The extending end of the second cylinder (909) is fixedly connected to the bottom of the mold (901). And a baffle (911) and a first fixing pin (915) are also fixedly installed at the extending end of the second cylinder (909). The baffle (911) is located between the first fixing pin (915) and the mold (901).

3. The fully automatic thermoforming and board making machine for plastic pallet production according to claim 2, wherein, A vacuum pump (10) is arranged on one side of the second cylinder (909). The input end of the vacuum pump (10) is communicated with a first hose (910). The input end of the first hose (910) fixedly penetrates through the baffle (911) and is communicated with the air suction cavity (912). A rubber ring (914) is fixedly installed at the top edge of the baffle (911).

4. An automatic blister board-making machine for plastic tray production according to claim 1, characterized in that, The cooling unit includes an adjusting cylinder (905) fixedly connected to the inner wall of the working box (6). The two sides of the middle part of the adjusting cylinder (905) are respectively communicated with a first water inlet pipe (904) and a second water inlet pipe (902). The output end of the second water inlet pipe (902) is communicated with the guiding sleeve (913).

5. The fully automatic plastic tray production blister board making machine according to claim 4, characterized in that, A piston (903) is slidably arranged inside the inner wall of the adjusting cylinder (905). The bottom of the piston (903) is fixedly connected with a lifting rod (906). The bottom end of the lifting rod (906) movably penetrates through the adjusting cylinder (905) and is fixedly connected with a second fixing pin (907). A thrust spring is elastically arranged between the bottom of the piston (903) and the inner wall of the adjusting cylinder (905).

6. The fully automatic thermoforming and paneling machine for plastic pallet production according to claim 4, wherein A turning rod (908) is rotatably arranged on the inner wall of the working box (6). One end of the turning rod (908) is slidably connected with the first fixing pin (915). And the other end of the turning rod (908) is slidably connected with the second fixing pin (907). A water return pipe (5) is arranged above the turning rod (908). The input end of the water return pipe (5) is communicated with the bottom of the baffle (911).

7. An automatic blister boarding machine for plastic tray production according to claim 4, characterized in that A water storage tank (3) is fixedly installed on the side surface of the working box (6). A water pump (4) is arranged on the front surface of the water storage tank (3). The output end of the water pump (4) is communicated with the water storage tank (3). And the input end of the water pump (4) is communicated with the output end of the water return pipe (5). The input end of the first water inlet pipe (904) is communicated with the bottom of the water storage tank (3).

8. An automatic blister board making machine for plastic pallet production according to claim 1, characterized in that, The positioning mechanism (7) includes a first guide sleeve (705) fixedly connected to the side of the working box (6). A square rod (708) is slidably sleeved in the first guide sleeve (705). A first roller (707) and a second roller (706) are rotatably arranged in the middle of the square rod (708).

9. The full-automatic plastic tray thermoforming and board making machine for plastic tray production according to claim 7, characterized in that, Two rotating seats (704) are fixedly installed on the top of the working box (6). A pressing frame (702) for positioning the plastic tray is rotatably arranged between the two rotating seats (704). One end of the pressing frame (702) is located between the first roller (707) and the second roller (706); The position of the other end of the pressing frame (702) corresponds to the position of the opening of the guide sleeve (913). A fixing plate (703) is fixedly installed in the middle of the pressing frame (702) away from the first roller (707). A tension spring is fixedly connected between the fixing plate (703) and the working box (6).

10. The fully automatic plastic tray production blister board making machine according to claim 7, characterized in that, A turning frame (701) is rotatably arranged on the front surface of the mounting plate (8). The extending end of the first cylinder (1) is movably connected to one end of the turning frame (701) through a lever (11). The other end of the turning frame (701) is movably connected to the top of the square rod (708).

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