Polyethylene foaming extrusion molding device

Abstract

The invention discloses a polyethylene foaming extrusion molding device, which comprises: a machine body, which is provided with a platform used for installing parts; the shell is arranged on the machine body; the barrel is arranged in the shell; the screw rod is arranged in the cylinder body; the first motor is used for driving the screw rod to rotate; the feeding hopper is arranged above the cylinder body; a feeding hole communicated with the feeding hopper is formed in the cylinder body; the stirring device is arranged in the feeding hopper; one end of the partition plate is fixedly connected to the inner wall of the feeding hopper; the first gas conveying pipe is arranged on the side wall of the feeding hopper; the first fan is arranged on one side of the barrel; the partition plate divides the inner wall of the feeding hopper into a partition cavity, the partition cavity is communicated with the first air conveying pipe, an air outlet is formed in the bottom of the first air conveying pipe, and the direction of airflow blown out by the first fan is perpendicular to the direction of the air outlet. According to the device, materials can be prevented from entering the first gas conveying pipe, the exhaust effect of waste gas is guaranteed, and a good cooling effect is provided for the extruder.

Description

Technical Field

[0001] The invention belongs to the technical field of polyethylene chemical cross-linked foam material processing, and in particular relates to a polyethylene foaming extrusion molding device. Background Art

[0002] Polyethylene chemical cross-linked foam material is a new type of thermal insulation material with wide applications, high cost performance, safety, environmental protection and international recognition. It is mainly used in thermal insulation of cold storage, central air conditioning, pipeline facilities, civil engineering, vehicles and ships, aerospace and other projects, packaging of medical equipment, sports equipment, precision instruments, kindergarten floor walls and sports stadium construction, etc.

[0003] When the extruder is running, a large amount of waste gas is generated in the extruder barrel. Usually, an exhaust pipe is installed on the extruder barrel to suck the waste gas and discharge it through a suction pump. When the waste gas is sucked out by the suction pump, some of the gas mixed in the material cannot be discharged, and a small amount of material will be sucked into the exhaust pipe and discharged along with the waste gas, resulting in material overflow and low gas discharge rate. The temperature of the plasticized material cannot be too high and it also needs to be cooled to protect the device. The existing extruder's post-heating cooling device has a complex structure and poor exhaust effect, which affects the service life. Summary of the invention

[0004] The content of this application is used to introduce concepts in a brief form, which will be described in detail in the detailed implementation section below. The content of this application is not intended to identify the key features or essential features of the technical solution claimed for protection, nor is it intended to limit the scope of the technical solution claimed for protection.

[0005] In order to overcome the deficiencies of the prior art, the present invention provides a polyethylene foaming extrusion molding device.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a polyethylene foam extrusion molding device, comprising: a body, having a platform for installing components; an outer shell, arranged on the body; a barrel, arranged in the outer shell; a screw, arranged in the barrel; a first motor, used to drive the screw to rotate; a feed hopper, arranged above the barrel; a feed port communicated with the feed hopper is provided on the barrel; the polyethylene foam extrusion molding device also includes: a stirring device, arranged in the feed hopper; a partition, one end of which is fixedly connected to the inner wall of the feed hopper; a first air pipe, arranged on the side wall of the feed hopper; a first fan, arranged on one side of the barrel; the partition separates a cavity on the inner wall of the feed hopper, the cavity is communicated with the first air pipe, an air outlet is provided at the bottom of the first air pipe, and the direction of the airflow blown by the first fan is perpendicular to the direction of the air outlet.

[0007] Furthermore, the polyethylene foam extrusion molding device also includes: a baffle, arranged in the compartment; a first mounting block, arranged on the inner wall of the feed hopper; a first push rod, arranged on the first mounting block; the baffle is a porous plate, the first mounting block is provided with a first through cavity for the first push rod to move, a support block is provided on the inner wall of the compartment, and the baffle is connected to the first push rod.

[0008] Furthermore, the stirring device includes: a roller, which is arranged in the feed hopper; a plurality of stirring rods, which are arranged on the roller; a second motor, which cooperates with the roller transmission; and a protrusion is arranged on the roller, and the protrusion is located below the first mounting block.

[0009] Furthermore, a connecting block is provided on the baffle, a connecting groove matching the connecting block is provided on the first push rod, an opening communicating with the compartment is provided on the feed hopper, a flap is provided on the side wall of the feed hopper, and the top of the flap is rotatably connected to the side wall of the feed hopper.

[0010] Furthermore, the polyethylene foam extrusion molding device also includes: a second mounting block, arranged on the side wall of the partition; a guide block, arranged on the second mounting block; a first connecting spring, arranged on the guide block; a first movable groove is provided on the second mounting block, the guide block is in the first movable groove, one end of the first connecting spring is fixedly connected to the inner wall of the first movable groove; and a first inclined surface is provided at the bottom of the guide block.

[0011] Furthermore, an extension plate is provided on the top of the guide block, a second movable groove is provided on the extension plate, a movable plate is provided in the second movable groove, a return spring is provided on the movable plate, and one end of the return spring is fixedly connected to the inner wall of the second movable groove; a third movable groove is provided on the movable plate, a first fixed block is provided in the third movable groove, a second connecting spring is provided on the first fixed block, and a first fixed groove corresponding to the first fixed block is provided on the side wall of the second movable groove.

[0012] Furthermore, a convex rod is provided on the side wall of the compartment, a push block is provided at one end of the convex rod, a second inclined surface is provided on the push block, a fourth movable groove for the push block to move is provided on the extension plate, and the fourth movable groove is communicated with the first fixed groove.

[0013] Furthermore, a fifth movable groove is provided on the inner wall of the first movable groove, a second fixed block is provided in the fifth movable groove, a third connecting spring is provided on the second fixed block, one end of the third connecting spring is fixedly connected to the inner wall of the fifth movable groove, and a second fixed groove is provided on the second fixed block; a push plate is provided in the second fixed groove, and a second push rod is provided at one end of the movable plate for pushing the push plate to move in the second fixed groove.

[0014] Furthermore, the polyethylene foam extrusion molding device also includes: a transmission wheel, which cooperates with the first push rod for transmission; a connecting shaft, which is arranged on the transmission wheel; a turntable, which is arranged at one end of the connecting shaft; a transmission cavity which is communicated with the first through cavity is provided on the first mounting block, and the transmission wheel can move in the transmission cavity so that the transmission wheel has two states of contact with the first push rod and staggered with the push rod.

[0015] Furthermore, an air inlet is provided on the side wall of the outer shell, a filter is provided in the air inlet, a second air pipe is provided in the outer shell, the second air pipe is communicated with the air inlet, a through groove is provided on the top of the body, the through groove is opposite to the other end of the second air pipe, the first fan is provided in the second air cavity, the first air pipe is provided on one side of the second air pipe, and an activated carbon adsorption layer is provided in the body.

[0016] The invention is beneficial in that it provides a polyethylene foaming extrusion molding device which prevents materials from entering the first gas delivery pipe and ensures the exhaust effect of waste gas by providing a good cooling effect for the extruder. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of this application are used to provide a further understanding of this application, so that other features, purposes and advantages of this application become more obvious. The illustrative embodiment drawings and their descriptions of this application are used to explain this application and do not constitute an improper limitation on this application.

[0018] In addition, throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and that the components and elements are not necessarily drawn to scale.

[0019] In the attached picture:

[0020] Figure 1 It is a schematic structural diagram of a polyethylene foaming extrusion molding device in one embodiment of the present invention.

[0021] Figure 2 for Figure 1 A cross-sectional view of a guide block of a polyethylene foam extrusion molding apparatus in the illustrated embodiment.

[0022] Figure 3 for Figure 2 Enlarged view of point A in .

[0023] Figure 4 for Figure 1 A cross-sectional view of a first mounting block of a polyethylene foam extrusion molding apparatus in the illustrated embodiment.

[0024] Figure 5 for Figure 4 Enlarged view of point B in .

[0025] Figure 6 for Figure 1 Schematic diagram of the gears of the polyethylene foam extrusion molding device in the illustrated embodiment.

[0026] Figure 7 for Figure 1 A cross-sectional view of an extension plate of a polyethylene foam extrusion molding apparatus in the illustrated embodiment.

[0027] Figure 8 for Figure 7 Enlarged view of point C in the figure.

[0028] Fig. 9 for Figure 1 A cross-sectional view of a drive wheel of a polyethylene foam extrusion molding device in the illustrated embodiment.

[0029] Fig.10 for Fig. 9 Enlarged view of point D in .

[0030] The meanings of the reference numerals in the figures are as follows:

[0031] 101, machine body; 102, shell; 103, feed hopper; 104, cylinder; 105, activated carbon adsorption layer; 106, partition; 107, baffle; 108, second mounting block; 109, guide block; 110, first connecting spring; 111, extension plate; 112, movable plate; 113, flap; 114, reset spring; 115, first air pipe; 116, second air pipe; 117, roller; 118, stirring rod; 119, bump; 120, first mounting Block; 121, first push rod; 1211, slider; 122, connecting rod; 123, gear; 124, second motor; 125, transmission belt; 127, first fixed block; 1271, second connecting spring; 128, second push rod; 129, protruding rod; 1291, push block; 130, second fixed block; 1301, third connecting spring; 131, push plate; 132, transmission rod; 133, transmission wheel; 134, connecting shaft; 135, turntable; 136, filter. DETAILED DESCRIPTION

[0032] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not intended to limit the scope of protection of the present disclosure.

[0033] It should also be noted that, for ease of description, only the parts related to the invention are shown in the drawings. In the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0034] It should be noted that the concepts such as "first" and "second" mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0035] It should be noted that the modifications of "one" and "plurality" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0036] The names of the messages or information exchanged between multiple devices in the embodiments of the present disclosure are only used for illustrative purposes and are not used to limit the scope of these messages or information.

[0037] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0038] like Figure 1-10 As shown, a polyethylene foam extrusion molding device includes a body 101, a shell 102, a barrel 104, a screw, a first motor, a feed hopper 103, a stirring device, a partition 106, a first air pipe 115 and a first fan; the body 101 has a platform for mounting components; the shell 102 is arranged on the body 101; the barrel 104 is arranged in the shell 102; the screw is arranged in the barrel 104; the first motor is used to drive the screw to rotate; the feed hopper 103 is arranged above the barrel 104; the barrel 104 is provided with a 3 communicating with each other; a stirring device is arranged in the feed hopper 103; one end of the partition 106 is fixedly connected to the inner wall of the feed hopper 103, and the top of the partition 106 is inclined so that the material falling on the partition 106 can fall directly; the first air pipe 115 is arranged on the side wall of the feed hopper 103; the first fan is arranged on one side of the cylinder 104; the partition 106 separates a cavity on the inner wall of the feed hopper 103, the cavity is communicated with the first air pipe 115, and an air outlet is arranged at the bottom of the first air pipe 115, and the air flow direction blown by the first fan is perpendicular to the direction of the air outlet.

[0039] The length of the compartment is greater than the width of the first air pipe 115 and is the same as the length of the inner wall of the feed hopper 103, thereby increasing the air inlet for the exhaust gas, reducing the suction force per unit area, and avoiding the material from being sucked into the first air pipe 115. At the same time, by utilizing the large-area compartment setting, the exhaust gas does not need to be concentrated in one place for absorption, thereby improving the absorption effect of the exhaust gas; the partition 106 is used to separate the interior of the feed hopper 103 from the compartment, so that the feed and exhaust do not affect each other, so as to guide the exhaust gas in the material out; the material in the feed hopper 103 is stirred by a stirring device, so that the exhaust gas in the material is quickly dispersed, thereby improving the exhaust effect of the material; the first fan provides the first air pipe 115 with a suction function, while cooling the barrel 104, thereby avoiding excessive temperature of the barrel 104 to damage the equipment and extend the service life of the extruder.

[0040] A baffle 107 is provided in the compartment, the baffle 107 is a porous plate, a support block is provided on the inner wall of the compartment, and the baffle 107 is placed on the support block; a first mounting block 120 is provided on the inner wall of the feed hopper 103, a first through cavity is provided on the first mounting block 120, a first push rod 121 is passed through the first through cavity, a slider 1211 is provided on the first push rod 121, and a slide groove for the slider 1211 to move is provided on the inner wall of the first through cavity; a connecting block is provided on the baffle 107, a connecting groove is provided at the top end of the first push rod 121, both the connecting block and the connecting groove are T-shaped structures, and the baffle 107 is connected to the first push rod 121 by means of the cooperation between the connecting block and the connecting groove.

[0041] The feed hopper 103 is provided with an opening communicating with the compartment, and a flap 113 is provided on the side wall of the feed hopper 103. The top of the flap 113 is rotatably connected to the side wall of the feed hopper 103, and the flap 113 covers the opening when it is flipped down.

[0042] Specifically, the stirring device includes a roller 117, a plurality of stirring rods 118 and a second motor 124. The roller 117 is provided with two groups. The roller 117 is rotatably connected to the feed hopper 103. The stirring rod 118 is fixedly connected to the roller 117. A gear 123 is provided at one end of the roller 117. The two rollers 117 are driven by the gear 123. The output shaft of the second motor 124 and the gear 123 form a transmission match through a transmission belt 125. A protrusion 119 is provided on the roller 117, and the protrusion 119 is located below the first mounting block 120.

[0043] A second mounting block 108 is provided on the side wall of the partition 106, and a first movable groove is provided on the second mounting block 108. A guide block 109 is provided in the first movable groove, and a first inclined surface is provided at the bottom of the guide block 109. A first connecting spring 110 is provided on the guide block 109, and one end of the first connecting spring 110 is fixedly connected to the inner wall of the first movable groove. An extension plate 111 is provided on the top of the guide block 109, and a second movable groove is provided on the extension plate 111. A movable plate 112 is provided in the second movable groove, and a return spring 114 is provided on the movable plate 112, and one end of the return spring 114 is fixedly connected to the inner wall of the second movable groove; a third movable groove is provided on the movable plate 112, and a first fixed block 127 is provided in the third movable groove. A second connecting spring 1271 is provided on the first fixed block 127, and a first fixed groove corresponding to the first fixed block 127 is provided on the side wall of the second movable groove.

[0044] A convex rod 129 is provided on the side wall of the compartment, a push block 1291 is provided at one end of the convex rod 129, a second inclined surface is provided on the push block 1291, and a fourth movable groove for the push block 1291 to move is provided on the extension plate 111, and the fourth movable groove is communicated with the first fixed groove.

[0045] A fifth movable groove is provided on the inner wall of the first movable groove, a second fixed block 130 is provided in the fifth movable groove, a third connecting spring 1301 is provided on the second fixed block 130, one end of the third connecting spring 1301 is fixedly connected to the inner wall of the fifth movable groove, and a second fixed groove is provided on the second fixed block 130; a push plate 131 is provided in the second fixed groove, a transmission groove is provided on the side wall of the second fixed groove, a second through cavity is provided on the side wall of the transmission groove, a transmission rod 132 is provided in the transmission groove, the middle part of the transmission rod 132 is rotatably connected to the inner wall of the transmission groove, one end of the transmission rod 132 is hinged to the push plate 131, a second push rod 128 is provided at one end of the movable plate 112, and the second push rod 128 is inserted in the second through cavity; a yield groove corresponding to the push block 1291 is provided on the push plate 131.

[0046] The first mounting block 120 is provided with a transmission cavity communicated with the first through cavity, and a transmission wheel 133 is provided in the transmission cavity for transmission cooperation with the first push rod 121, and the transmission wheel 133 can move in the transmission cavity; a connecting shaft 134 is provided on the transmission wheel 133, and the connecting shaft 134 passes through the shell 102, and a turntable 135 is provided on one end of the connecting shaft 134 outside the shell 102; a total of four first mounting blocks 120 are provided in the feed hopper 103, two partitions 106 are provided, which are respectively located on both sides of the feed hopper 103, a baffle 107 is connected to the first push rods 121 on the two first mounting blocks 120, and adjacent first push rods 121 are connected by a connecting rod 122, so that the two baffles 107 move synchronously.

[0047] An air inlet is provided on the side wall of the outer shell 102, a filter screen 136 is provided in the air inlet, a second air pipe 116 is provided in the outer shell 102, the second air pipe 116 is communicated with the air inlet, the second air pipe 116 is an L-shaped structure, a through groove is provided on the top of the body 101, the through groove is opposite to the other end of the second air pipe 116, the first fan is provided in the second air cavity, the first fan is a centrifugal first fan, the first air pipe 115 is provided on one side of the second air pipe 116, the airflow at the outlet of the second air pipe 116 is parallel to the surface of the first air pipe 115, and an activated carbon adsorption layer 105 is provided in the body 101.

[0048] The machine body 101 is also provided with a second fan, which is located at one side of the extrusion port and is used to cool the extruded material.

[0049] The material enters from the feed hopper 103, the second motor 124 drives the roller 117 to rotate, the stirring rod 118 stirs the material so that the exhaust gas is released from the material, the first fan works to draw air from the air inlet to cool the inside of the shell 102, and the airflow passes through the outlet of the first air pipe 115 and generates suction at the inlet of the first air pipe 115. The airflow in the feed hopper 103 is drawn into the compartment, and the baffle 107 blocks the material to prevent the material from entering the compartment; when the roller 117 rotates, the protrusion 119 intermittently The bottom ends of the first push rod 121 are in contact, the transmission wheel 133 is staggered with the first push rod 121, and the first push rod 121 intermittently drives the baffle 107 to rise and then fall, generating vibrations on the baffle 107, shaking off the materials on the baffle 107 to avoid blockage of the baffle 107; the exhaust gas passes through the first air pipe 115 and follows the airflow of the second air pipe 116 into the body 101 from the through groove, and the airflow is purified after passing through the activated carbon adsorption layer 105, and then the airflow flows out of the body 101 to avoid exhaust gas polluting the environment.

[0050] When replacing the baffle 107, open the flap 113, push the turntable 135 toward the body 101, the transmission wheel 133 moves to contact the first push rod 121, rotate the turntable 135, the transmission wheel 133 drives the first push rod 121 to move, the first push rod 121 drives the baffle 107 to rise, the baffle 107 rises to the position of the guide block 109, the guide block 109 pushes the baffle 107 to move out of the opening, so that the baffle 107 can be directly taken out; when installing a new baffle 107, The movable plate 112 is pulled outward, and the movable plate 112 moves outward of the second movable groove to increase the length of the extension plate 111. The movable plate 112 extends from the opening, and the first fixing block 127 is inserted into the first fixing groove. The movable plate 112 is pushed into the compartment, and the movable plate 112 drives the guide block 109 to move into the first movable groove. The second fixing groove moves to the second fixing block 130 so that the second fixing block 130 is inserted into the second fixing groove to fix the guide block 109 in the first movable groove, and the extension plate 111 is fitted. 11 Push the new baffle 107 into the compartment, insert the connecting block into the connecting groove so that the baffle 107 is connected to the first push rod 121, rotate the turntable 135 in the opposite direction to drive the first push rod 121 to descend, until the baffle 107 is placed on the supporting block, then pull the turntable 135 so that the transmission wheel 133 and the first push rod 121 are staggered; continue to push the movable plate 112 into the compartment, the movable plate 112 drives the extension plate 111 to continue to move, the first fixed groove moves to the position of the push block 1291, and the push plate 135 is pushed. Block 1291 pushes the first fixed block 127 out of the first fixed groove, the reset spring 114 pulls the movable plate 112 to move into the second movable groove, the second push rod 128 is inserted into the transmission groove to push the transmission rod 132 to rotate, the transmission rod 132 rotates and pushes the push plate 131 to move out of the second fixed groove, the push plate 131 pushes the second fixed block 130 to move out of the second fixed groove, the first connecting spring 110 pushes the guide block 109 to extend out of the first movable groove, and the guide block 109 is reset.

[0051] The above descriptions are only some preferred embodiments of the present disclosure and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to the technical solutions formed by a specific combination of the above-mentioned technical features, but should also cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the above-mentioned inventive concept. For example, the above-mentioned features are replaced with the technical features with similar functions disclosed in the embodiments of the present disclosure (but not limited to) and the technical solutions formed.

Claims

1. A polyethylene foam extrusion molding device, comprising: a body having a platform for mounting components; A housing, disposed on the body; A cylinder body, arranged in the shell; A screw rod is disposed in the barrel; A first motor, used for driving the screw to rotate; A feed hopper is arranged above the cylinder; The cylinder is provided with a feed port communicated with the feed hopper; Features: The polyethylene foaming extrusion molding device also includes: A stirring device is arranged in the feed hopper; A partition plate, one end of which is fixedly connected to the inner wall of the feed hopper; A first air delivery pipe is provided on the side wall of the feed hopper; A first fan is arranged on one side of the cylinder; The partition separates a cavity on the inner wall of the feed hopper, the cavity is communicated with the first air pipe, an air outlet is provided at the bottom of the first air pipe, and the direction of the air flow blown out by the first fan is perpendicular to the direction of the air outlet.

2. The polyethylene foam extrusion molding device according to claim 1, characterized in that: Also includes: a baffle, disposed in the compartment; A first mounting block is arranged on the inner wall of the feed hopper; A first push rod, disposed on the first mounting block; The baffle is a porous plate, the first mounting block is provided with a first through cavity for the first push rod to move, a supporting block is provided on the inner wall of the compartment, and the baffle is connected to the first push rod.

3. The polyethylene foam extrusion molding device according to claim 2, characterized in that: The stirring device comprises: A rotating roller is arranged in the feed hopper; A plurality of stirring rods are arranged on the rotating roller; A second motor is coupled to the rotating roller for transmission; The rotating roller is provided with a convex block, and the convex block is located below the first mounting block.

4. The polyethylene foam extrusion molding device according to claim 2, characterized in that: The baffle is provided with a connecting block, the first push rod is provided with a connecting groove matched with the connecting block, the feed hopper is provided with an opening communicating with the compartment, the side wall of the feed hopper is provided with a flap, and the top of the flap is rotatably connected to the side wall of the feed hopper.

5. The polyethylene foam extrusion molding device according to claim 1, characterized in that: Also includes: A second mounting block is provided on the side wall of the partition; A guide block, disposed on the second mounting block; A first connecting spring, provided on the guide block; The second mounting block is provided with a first movable groove, the guide block is located in the first movable groove, one end of the first connecting spring is fixedly connected to the inner wall of the first movable groove; and the bottom of the guide block is provided with a first inclined surface.

6. The polyethylene foam extrusion molding device according to claim 5, characterized in that: An extension plate is provided on the top of the guide block, a second movable groove is provided on the extension plate, a movable plate is provided in the second movable groove, a return spring is provided on the movable plate, and one end of the return spring is fixedly connected to the inner wall of the second movable groove; a third movable groove is provided on the movable plate, a first fixed block is provided in the third movable groove, a second connecting spring is provided on the first fixed block, and a first fixed groove corresponding to the first fixed block is provided on the side wall of the second movable groove.

7. The polyethylene foam extrusion molding device according to claim 6, characterized in that: A convex rod is provided on the side wall of the compartment, a push block is provided at one end of the convex rod, a second inclined surface is provided on the push block, a fourth movable groove for the push block to move is provided on the extension plate, and the fourth movable groove is communicated with the first fixed groove.

8. The polyethylene foam extrusion molding device according to claim 6, characterized in that: A fifth movable groove is provided on the inner wall of the first movable groove, a second fixed block is provided in the fifth movable groove, a third connecting spring is provided on the second fixed block, one end of the third connecting spring is fixedly connected to the inner wall of the fifth movable groove, and a second fixed groove is provided on the second fixed block; a push plate is provided in the second fixed groove, and a second push rod is provided at one end of the movable plate for pushing the push plate to move in the second fixed groove.

9. The polyethylene foam extrusion molding device according to claim 2, characterized in that: Also includes: A transmission wheel, in transmission cooperation with the first push rod; A connecting shaft, arranged on the transmission wheel; A rotating disk, arranged at one end of the connecting shaft; The first mounting block is provided with a transmission cavity communicated with the first through cavity, and the transmission wheel can move in the transmission cavity so that the transmission wheel has two states of contact with the first push rod and staggered with the push rod.

10. The polyethylene foam extrusion molding device according to claim 1, characterized in that: An air inlet is provided on the side wall of the shell, a filter is provided in the air inlet, a second air pipe is provided in the shell, the second air pipe is communicated with the air inlet, a through groove is provided on the top of the body, the through groove is opposite to the other end of the second air pipe, the first fan is provided in the second air cavity, the first air pipe is provided on one side of the second air pipe, and an activated carbon adsorption layer is provided in the body.

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