Extrusion structure and device for producing plant fiber products

Abstract

The invention provides an extrusion structure and device for producing plant fiber products, the extrusion structure comprises a guide pillar and an expansion body arranged on the periphery of the guide pillar, the guide pillar is a supporting structure of the expansion body, the expansion body can be filled with recyclable objects through the guide pillar so as to expand the expansion body, and the expanded expansion body is used for extruding the inner wall of a product to be processed. According to the extrusion device for the paper-plastic product, the expansion body is expanded and shrunk by externally connecting the air inflation equipment and the air exhaust equipment, so that the expansion body smoothly enters the product, smooth demolding is facilitated, the air flow channel is used for containing the expansion body, and when the air exhaust equipment exhausts air into the expansion body, the expansion body shrinks into the air flow channel; the diameter of the expansion body wrapping the periphery of the guide column can be reduced, and most of the expansion body is stacked in the air flow channel, so that the wall thickness and the diameter of the expansion body can be increased as much as possible and the expansion ratio of the expansion body can be reduced under the condition that the inner diameter of the closing position of a product container is fixed, and the service life of the expansion body is prolonged.

Description

Technical Field

[0001] The invention belongs to the field of production of plant fiber molding products, and in particular relates to an extrusion structure and a device for producing plant fiber products. Background Art

[0002] Pulp molding, commonly known as paper plastic, is made of renewable plant fibers. It is a new type of environmentally friendly product obtained by molding the pulp through a specific mold. Its excellent properties include using plant fibers or waste paper as raw materials, being green and environmentally friendly, low cost, molding, diverse structures, pressure resistance, shock resistance, and anti-static.

[0003] When producing paper plastic products, the products must first be vacuum-formed in the paper plastic forming chamber, and then pressure must be applied to the inner wall of the product during the production process to increase the structural strength of the preformed product and remove excess moisture. Airbags are usually installed on the tooling that applies pressure to the product, and the inner wall of the product is squeezed and shaped by inflation and deflation. Airbags are consumable parts with a short service life, high replacement frequency and high cost of use; when multiple airbags use the same air source at the same time, if one airbag is deflated, it will cause insufficient pressure in other airbags, thereby reducing the production quality of the product. Summary of the invention

[0004] In view of this, the present invention aims to propose an extrusion structure for producing plant fiber products to solve the problem of low service life of airbags when extruding paper-plastic products in the prior art.

[0005] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0006] An extrusion structure for producing plant fiber products comprises a guide column and an expansion body arranged on its periphery, wherein the guide column is a supporting structure of the expansion body, recyclable objects can be filled into the expansion body through the guide column to expand the expansion body, and the expanded expansion body is used to extrude the inner wall of the product to be processed; the recyclable object is preferably gas; and the expansion body is preferably an air bag.

[0007] The expansion body is sleeved on the periphery of the guide column, and an air flow channel is provided on the guide column. The equipment for filling recyclable objects can fill the objects into the expansion body through the air flow channel; the guide column is connected to the vacuum equipment through the air flow channel, and the vacuum equipment can extract the recyclable objects, so that negative pressure is formed in the air flow channel, and the expansion body is stored in the air flow channel.

[0008] Another object of the present invention is to propose a device for producing plant fiber products to solve the problem in the prior art that when extruding paper-plastic products, if one airbag is damaged and the pressure is released, other airbags will not be able to reach the working pressure, thereby affecting the product quality.

[0009] The device for producing plant fiber products includes a rectifying box and at least two expansion bodies. The interior of the rectifying box is a hollow chamber. The filling end of each expansion body is connected to the hollow chamber of the rectifying box. An air inlet nozzle and an air outlet nozzle are respectively arranged on the hollow chamber. The air inlet nozzle is externally connected to a device for filling recyclable objects, and the air outlet nozzle is externally connected to a vacuuming device or to the air. The device for filling recyclable objects causes the expansion body to expand, thereby squeezing the inner wall of the product to be processed.

[0010] The recyclable object is preferably gas; the expandable body is preferably an air bag.

[0011] Furthermore, a one-way speed regulating valve is installed at the filling end of each expansion body, and the one-way speed regulating valve is used to control the filling speed of the expansion body by the recyclable object. If the recyclable filling material is gas, the one-way speed regulating valve can adjust the flow rate inside the expansion body.

[0012] Compared with the prior art, the extrusion structure and device for producing plant fiber products described in the present invention have the following beneficial effects:

[0013] (1) In the extrusion structure for producing plant fiber products described in the present invention, the expanded expansion body is used to extrude the inner wall of the product to be processed, and the guide column is used to support the expansion body so that the expansion body has a certain stiffness, thereby more smoothly entering the interior of the product, reducing the scratches of the expansion body and increasing its service life.

[0014] (2) In the extrusion structure for producing plant fiber products described in the present invention, the air flow channel can be a through groove, and the air flow channel is used to accommodate the expansion body. When the vacuum device draws air into the expansion body, the expansion body shrinks into the air flow channel, and the diameter of the gas expansion body wrapped around the guide column can be reduced, so that most of the expansion body shrinks into the air flow channel. In this way, when the inner diameter of the product opening is constant, the expansion body with a large diameter in the natural state can be selected as much as possible, while ensuring that the expansion body can smoothly enter or leave the product, reducing the expansion ratio of the expansion body, so as to increase the service life of the expansion body.

[0015] (3) In the extrusion structure for producing plant fiber products described in the present invention, a one-way speed regulating valve is used to control the filling speed of each expansion body. If an expansion body is damaged and the pressure is released during production, without an explosion-proof structure, the remaining intact expansion bodies will be under-pressured, and the quality of the extruded products will be affected. A one-way speed regulating valve is set as the explosion-proof structure of the expansion body. When an expansion body is broken, the one-way speed regulating valve acts to ensure that the flow rate of the filler through the broken part is much lower than the total flow rate of the filler when entering the rectifier box, so it will not cause too much impact on other expansion bodies, thereby ensuring that the remaining products can be produced normally.

[0016] Another object of the present invention is to provide a device for producing plant fiber products to solve the problems of inconvenient installation and low maintenance efficiency of cold pressing tooling or hot pressing tooling for paper-plastic products in the prior art.

[0017] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0018] A device for producing plant fiber products comprises a base and an expansion body arranged thereon, a limiting structure is installed on the upper end of the base, and the base is detachably connected to a rectifier box through a quick lock structure, and a limiting structure is arranged on the periphery of the rectifier box, the limiting structure is used to limit the left and right relative positions of the base and the rectifier box, a plurality of expansion bodies are evenly distributed on the rectifier box, and the expansion bodies are used to extrude the side walls of the product to be processed in the cold press forming air chamber.

[0019] Furthermore, the limiting structure includes two baffles, and the two baffles are arranged relatively parallel, the rectifier box is located between the two baffles, the rectifier box can be adjusted forward and backward between the two baffles, each baffle is detachably connected to the upper end of the base, and one side of each baffle is abutted against the outer wall of the rectifier box.

[0020] Furthermore, a limit groove is provided on the outer wall of the rectifier box, one end of the stopper is located in the limit groove, and a threaded hole is provided on the other end of the stopper, and an adjusting bolt is installed in the threaded hole. One end of the adjusting bolt abuts against the base to adjust the front and rear relative position of the rectifier box relative to the base, and the stopper and the baffle are arranged perpendicular to each other, and a through hole is provided in the middle of the stopper, and one end of the fixing bolt passes through the through hole and is fixedly connected to the base.

[0021] Furthermore, the quick lock structure includes a front top and a rear top, the front top includes a push pin and a spring arranged on its periphery, and both ends of the spring are respectively fixedly connected to the periphery of the push pin and the upper end of the base, one end of the push pin abuts against the front side of the rectifier box, the rear top includes a buckle, and a slot is provided at the upper end of the base, one end of the buckle is snapped into the slot, and the other end of the buckle is fixedly connected to the outer wall of the rectifier box.

[0022] Compared with the prior art, the device for producing plant fiber products described in the present invention has the following beneficial effects: the limiting structure and the adjusting structure are used to limit or adjust the relative position of the rectifier box and the base, and the quick lock structure is used to fix the rectifier box on the base to facilitate the staff to quickly install and disassemble the rectifier box, facilitate the positioning of the rectifier box, have high installation accuracy, and facilitate maintenance.

[0023] Another object of the present invention is to propose a device for producing plant fiber products to solve the problem that the deviation between the shaping mold and the forming mold easily leads to defective products, and the deviation angle and direction of the shaping mold are variable and difficult to adjust.

[0024] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0025] A device for producing plant fiber products comprises a base plate, and both ends of the base plate are detachably connected to the periphery of a rectifier box, an adjusting bolt is installed on the base plate, one end of the adjusting bolt abuts against one side of the rectifier box, and the adjusting bolt is used to adjust the lateral relative position of the rectifier box and the base plate, top bolts are also respectively arranged at both ends of the base plate, and the top bolts are used to adjust the height difference between the end of the rectifier box and the corresponding end of the base plate, a power component is installed on the lower side of the base plate, a plurality of expansion bodies are installed on the rectifier box, the power component is fixedly connected to a frame, and the power component is used to drive the base plate, the rectifier box and the expansion body to move relative to the frame.

[0026] Furthermore, the two ends of the bottom plate are detachably connected to the two ends of the rectifier box through a buckle plate, and the cross-section of the buckle plate is a U-shaped structure.

[0027] Furthermore, a first fine-tuning hole is provided in the middle of the bottom plate, the outer periphery of the adjusting bolt is rotatably sleeved into the first fine-tuning hole, a cam portion is installed at one end of the adjusting bolt, an adjustment groove is provided on one side of the rectifier box, and the cam portion is located in the adjustment groove.

[0028] Furthermore, the width of the adjustment slot gradually increases from the middle to both sides, a first lock nut is installed around the adjustment bolt, and the first lock nut is located on one side of the base plate, and the cam portion is located on the other side of the base plate, and the first lock nut is used to lock the relative position of the cam portion and the adjustment slot.

[0029] Furthermore, a support plate is installed at the lower end of the base plate, and a power component is installed at the lower end of the support plate. A second fine-tuning hole is provided in the middle of the support plate, and a pin is installed on the power component. The outer periphery of the pin is located in the second fine-tuning hole. The support plate can rotate along the axis of the pin relative to the frame and the power component. The pin is provided with an external thread, and a second lock nut is provided on the outer periphery of the pin. The second lock nut is used to lock the relative position of the support plate and the frame.

[0030] Furthermore, second threaded holes are respectively provided on both sides of the support plate, and a push bolt is threadedly connected to each second threaded hole. The upper end of the push bolt abuts against the outer wall of the rectifier box, and the push bolt and the pin shaft are arranged perpendicular to each other. The push bolt is also used to adjust the relative position of the support plate and the rectifier box.

[0031] The technical structure adjustments of the above four preferred solutions are all aimed at adjusting the relative positions of the mold and the airbag.

[0032] Furthermore, an anti-retreat component for preventing the expansion body from being displaced is also provided on the frame, and the anti-retreat component includes an anti-retreat rod, the lower end of the anti-retreat rod is fixedly connected to the movable rod of the anti-retreat cylinder, the anti-retreat cylinder is fixedly connected to the frame, an anti-retreat hole is provided on the support plate, the cylinder can drive the outer periphery of the anti-retreat rod to be inserted into the anti-retreat hole, and an adjusting bolt is also provided inside the anti-retreat hole, the adjusting bolt can adjust the position of the anti-retreat rod inserted into the anti-retreat hole, thereby reducing the gap of the support plate when it is retracted, so that the anti-retreat component can better complete the anti-retreat function.

[0033] Compared with the prior art, the device for producing plant fiber products described in the present invention has the following features:

[0034] Beneficial effects:

[0035] (1) In the device for producing plant fiber products described in the present invention, the adjustment bolt and the top bolt on the hot pressing airbag base can be used to adjust the relative positions of the expansion body (airbag) and the upper mold and the lower mold, and can be adjusted in multiple directions and angles with high adjustment accuracy, ensuring that the expansion body (airbag) can smoothly enter the product cavity and ensure product quality.

[0036] (2) In the device for producing plant fiber products described in the present invention, the anti-retraction rod is inserted into the anti-retraction hole, which can prevent the expansion body (air bag) from causing the bottom plate to retreat due to expansion, thereby ensuring the relative position of the rectifier box and the product cavity is stable, thereby ensuring product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0038] Figure 1 It is a structural schematic diagram of a first embodiment of a paper-plastic product extrusion device according to an embodiment of the present invention;

[0039] Figure 2 It is a structural schematic diagram of the rectifier box and the buckle assembly according to an embodiment of the present invention;

[0040] Figure 3 It is a structural schematic diagram of the limiting structure according to an embodiment of the present invention;

[0041] Figure 4 It is a structural schematic diagram of the airbag and the guide column according to an embodiment of the present invention being installed to the fairing box;

[0042] Figure 5 This is a schematic cross-sectional structure diagram of an air bag wrapped around the periphery of a guide post according to an embodiment of the present invention;

[0043] Figure 6 It is a structural schematic diagram of the structure of the second embodiment of the extrusion device for paper-plastic products according to an embodiment of the present invention;

[0044] Figure 7 It is a schematic diagram of the exploded structure of the second embodiment of the extrusion device for paper-plastic products according to the embodiment of the present invention;

[0045] Figure 8 It is a front view schematic diagram of a second embodiment of the extrusion device for paper-plastic products according to an embodiment of the present invention;

[0046] Fig. 9It is a cross-sectional schematic diagram of the airbag according to an embodiment of the present invention being retracted around the guide pillar;

[0047] Fig.10 It is a cross-sectional schematic diagram of the airbag according to an embodiment of the present invention in a natural state outside the guide pillar.

[0048] Description of reference numerals:

[0049] 1. Guide column; 11. Air flow channel; 12. Guide hole; 2. Air bag; 3. Rectifier box; 31. Limiting groove; 4. One-way speed regulating valve; 5. Base; 6. Limiting structure; 61. Baffle; 62. Block; 7. Ejector pin; 8. Spring; 9. Buckle; 10. Roller; 100. Frame; 101. Bottom plate; 102. Buckle plate; 103. Adjustment bolt; 104. Adjustment bolt; 105. Cam part; 106. Support plate; 107. Pin shaft; 108. Ejector bolt; 109. Anti-recoil hole; 110. Power component; 111. Anti-recoil rod; 112. Anti-recoil cylinder. DETAILED DESCRIPTION

[0050] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0051] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0052] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0053] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0054] like Figure 1-5 As shown, a first embodiment of a device for producing plant fiber products, the extrusion device is used for cold pressing of paper plastic products, including a guide column 1 and an expansion body arranged around the guide column 1. In this embodiment, the expansion body is an air bag 2. Figure 1 As shown, X is the left-right direction, Y is the front-back direction, the guide post 1 is the supporting structure of the airbag 2, and the guide post 1 is connected to the external inflation device and / or the exhaust device through the air pipe to realize the expansion or contraction of the airbag. The inflation device can fill the airbag 2 with recyclable objects through the guide post 1, and the recyclable objects are media such as gas, liquid, high-temperature gas, and high-temperature liquid, so as to expand the airbag 2, and the expanded airbag 2 is used to squeeze the side wall of the product to be processed.

[0055] The outer diameter of the airbag 2 may be smaller than the diameter of the product opening in the natural state, or smaller than the diameter of the product opening in the vacuum contraction state, and may also include the coordination of the airbag 2 with the product opening diameter in other states, as long as the airbag 2 can enter the interior of the product.

[0056] like Fig. 9 and Fig.10 As shown, the working process of the airbag is as follows: the vacuum device draws air into the airbag 2 through the guide column 1, and the airbag 2 shrinks to a diameter smaller than the inner diameter of the closing part of the product container. The external power component drives the guide column 1 and the airbag 2 into the product. When the airbag 2 is inserted into the product, the vacuum device is closed, and the inflation device injects air into the airbag 2 through the guide column 1. The outer wall of the inflated airbag 2 abuts against the inner wall of the product, and the airbag 2 can adapt to and fit the inner wall of the product to prevent the side wall of the product from collapsing and wrinkling, and discharge excess moisture from the product, so that the density and strength of the product are improved, and the heating energy consumption of the next process is reduced. After the cold pressing is completed, the inflation device is turned off, and the vacuum device draws air into the airbag 2 through the guide column 1, and the airbag 2 shrinks to a diameter smaller than the inner diameter of the closing part of the product container. The external power component drives the guide column 1 and the airbag 2 away from the product so that the airbag 2 can be separated from the product more smoothly.

[0057] The guide column 1 is provided with a guide hole 12 (or not), the side wall of the guide column 1 is provided with an airflow channel 11 (the guide hole 12 and the airflow channel 11 may also be the same component), the airflow channel 11 may be a through groove, the inflation device and the air extraction device are connected to the inside of the airbag 2 through the air pipe, the guide hole 12 and the airflow channel 11 in sequence (the inflation device and the air extraction device may be directly connected to the inside of the airbag 2 through the air pipe and the airflow channel 11), and the inner edge of the port of the airbag 2 is fixedly connected to the periphery of the guide column 1. Any connection method between the airbag 2 and the guide column 1 is acceptable, as long as the airbag 2 is sleeved on the outside of the guide column 1.

[0058] The airflow channel is used to store the airbag 2. The airbag 2 is made of expandable material. When the vacuum device draws air into the airbag 2, the airbag 2 shrinks into the airflow channel, and the diameter of the airbag 2 wrapped around the guide column 1 can be reduced. In this way, when the inner diameter of the product opening is constant, an airbag with a large diameter in a natural state can be selected as much as possible to reduce the airbag expansion ratio and increase the service life of the airbag.

[0059] It also includes a rectifier box 3, and a number of guide pillars 1 are evenly distributed on the rectifier box 3, and the feeding end of each guide pillar 1 is located inside the rectifier box 3 (it can also be directly connected to the rectifier box through an air bag, and the guide pillar 1 is not set), and an air inlet nozzle and an air outlet nozzle are respectively set on the rectifier box 3, and the air inlet nozzle is externally connected to an inflation device, and the air outlet nozzle is externally connected to a vacuum device or to the air (external atmospheric pressure). Multiple groups of guide pillars 1 are set on the rectifier box 3 to improve production efficiency. The rectifier box 3 is a diversion structure of multiple guide pillars 1 (or multiple air bags), and the air inlet nozzle on the rectifier box 3 is externally connected to an inflation device, and the air outlet nozzle of the rectifier box 3 is externally connected to a vacuum device or to the air (external atmospheric pressure) to ensure that multiple air bags 2 are simultaneously inhaled or exhausted.

[0060] A one-way speed regulating valve 4 is installed at the feeding end of each guide column 1, and the one-way speed regulating valve 4 is used to control the air flow rate of each guide column 1. If an airbag 2 is damaged and leaks during production, without an explosion-proof structure, the remaining intact airbags 2 will have insufficient air pressure, and the quality of the extruded product will be problematic. The one-way speed regulating valve 4 is set as the explosion-proof structure of the airbag 2. When an airbag ruptures, the one-way speed regulating valve acts to ensure that the flow rate of air passing through the damaged part is much lower than the total air flow rate, so it will not cause too much impact on other airbags, thereby ensuring that the remaining products can be produced normally.

[0061] The one-way speed regulating valve 4 is used to adjust the intake flow rate of a single airbag 2 so that the pressurized gas medium in the fairing box 3 can flow evenly into each airbag 2, and the one-way speed regulating valve 4 does not affect the exhaust of the airbag 2.

[0062] The cold pressing device for paper-plastic products also includes a base 5, and a limiting structure 6 and a quick lock structure are respectively arranged on the upper end of the base 5. The limiting structure 6 is used to limit the relative position of the rectifier box 3 and the base 5, and the quick lock structure is used to fix the relative position of the base 5 and the rectifier box 3, so as to facilitate the staff to quickly install and disassemble the rectifier box 3, facilitate the positioning of the rectifier box 3, have high installation accuracy, and facilitate maintenance.

[0063] The limiting structure 6 includes two baffles 61, and the two baffles 61 are arranged relatively parallel, the rectifier box 3 is located between the two baffles 61, each baffle 61 is detachably connected to the upper end of the base 5, one side of each baffle 61 abuts against the outer wall of the rectifier box 3, and the gap between the two baffles 61 is used to limit the relative position of the rectifier box 3 on the base 5. When the rectifier box 3 is inserted, the two baffles 61 can play a guiding role, allowing it to smoothly enter the preset position. The gap between the two baffles 61 can be adjusted to adapt to different specifications of the rectifier box 3.

[0064] A limiting groove 31 is provided on the outer wall of the rectifier box 3, one end of the stopper 62 is located in the limiting groove 31, and a threaded hole is provided on the other end of the stopper 62, in which an adjusting bolt is installed, and one end of the adjusting bolt abuts against the base 5 to adjust the front and rear relative position of the rectifier box relative to the base, and the stopper 62 and the baffle 61 are arranged perpendicular to each other, and a through hole is provided in the middle of the stopper 62, and one end of the fixing bolt passes through the through hole and is fixedly connected to the base 5, and the two stops 62 and the baffle 61 respectively define the four sides of the rectifier box 3, which is convenient for positioning the rectifier box 3.

[0065] Compared with the positioning structure of the rectifier box 3 when the limiting structure 6 is used, the quick locking structure is used to quickly lock the relative position of the rectifier box 3 and the base 5. The quick locking structure includes a front top and a rear top. The front top includes a top pin 7 and a spring 8 arranged on its periphery, and the two ends of the spring 8 are respectively fixedly connected to the periphery of the top pin 7 and the upper end of the base 5, and one end of the top pin 7 abuts against the front side of the rectifier box 3. The rear top includes a buckle 9, and a slot is provided at the upper end of the base 5. One end of the buckle 9 is snapped into the slot, and the other end of the buckle 9 is fixedly connected to the outer wall of the rectifier box 3. The spring 8 and the top pin 7 are the tightening structure of the rectifier box 3. The rectifier box 3 is always subjected to the lateral tightening force of the top pin 7 due to the elasticity of the spring 8, so that one end of the buckle 9 is snapped into the slot. When the rectifier box 3 needs to be disassembled, the staff compresses the spring 8 and pulls up the rectifier box 3 at the end of the buckle 9, and the rectifier box 3 can be removed as a whole.

[0066] like Figure 6-8 As shown, a second embodiment of a device for producing plant fiber products, the extrusion device is applied to the hot pressing process of paper-plastic products, including a bottom plate 101, a buckle plate 102 is respectively arranged at both ends of the bottom plate 101, and the rectifier box 3 is fixed relative to the bottom plate 101 through the buckle plate 102, the buckle plate 102 is used to fix the relative position of the bottom plate 101 and the rectifier box 3, the cross section of the buckle plate 102 is a U-shaped structure, one end of the bottom plate 101 and one end of the rectifier box 3 are respectively located in the U-shaped structure, the side wall of the U-shaped structure is provided with a first threaded hole, the adjusting bolt 103 is installed in the first threaded hole, one end of the adjusting bolt 103 is abutted to one side of the bottom plate 101 and one side of the rectifier box 3, the airbag 2 is used to extrude the inner wall of the product to be processed, the base of the hot pressing airbag 2 is used to adjust the relative position of the airbag 2 and the product cavity, the power component 110 is used to drive the base of the hot pressing airbag 2 and the airbag 2 to approach or move away from the product cavity, and can be adjusted in multiple directions and angles, with high adjustment accuracy to ensure molding quality.

[0067] like Figure 7As shown, a first fine-tuning hole is provided in the middle of the base plate 101, and the outer periphery of the adjusting bolt 104 is rotatably sleeved into the first fine-tuning hole. A cam portion 105 is installed at one end of the adjusting bolt 104, and an adjustment slot is provided on one side of the rectifier box 3. The cam portion 105 is located in the adjustment slot, and the width of the adjustment slot gradually increases from the middle to both sides (the enlarged parts on both sides are chamfered for easy installation). A first lock nut is installed on the outer periphery of the adjusting bolt 104, and the first lock nut is located on one side of the base plate 101, and the cam portion 105 is located on the other side of the base plate 101. The first lock nut is used to lock the relative position of the cam portion 105 and the adjustment slot. The outer periphery of the cam portion 105 is a variable diameter structure. When the staff rotates the cam portion 105 through the adjusting bolt 104, the cam portion 105 will drive the rectifier box 3 to move slightly to the left and right sides, thereby realizing fine-tuning of the rectifier box 3, and the adjusting bolt 104 is responsible for the linear adjustment of the rectifier box 3 in the X direction.

[0068] like Figure 7 As shown, a support plate 106 is installed at the lower end of the bottom plate 101, and a power component 110 is installed at the lower end of the support plate 106. A second fine-tuning hole is provided in the middle of the support plate 106. A support plate 107 is installed on the power component 110. The outer periphery of the support plate 107 is located in the second fine-tuning hole. The support plate 106 can rotate relative to the frame 100 and the power component 110 along the axis of the support plate 107. The support plate 107 is provided with an external thread. A second lock nut is provided on the outer periphery of the support plate 107. The second lock nut is used to lock the relative position of the support plate 106 and the frame 100. When adjusting, The relative position of the frame 100 and the power component 110 always remains unchanged. The staff can rotate the support plate 106 to make the support plate 106 and the power component 110 or the frame 100 rotate relative to each other, while the relative position of the product cavity and the frame 100 remains unchanged, so that the support plate 106 and the product cavity rotate relative to each other, thereby achieving fine adjustment of the position of multiple airbags 2 on the fairing box 3 and the product cavity. The power component 110 is the power for the airbag 2 to move away from or close to the product cavity. The power component 110 is a cylinder or linear drive in the prior art. The support plate 107 is responsible for the rotation adjustment of the fairing box 3 in the Z direction.

[0069] like Figure 7 As shown, the two sides of the support plate 106 are respectively provided with second threaded holes, and each second threaded hole is threadedly connected to a top bolt 108, and the upper end of the top bolt 108 abuts against the outer wall of the fairing box 3. The top bolt 108 is also used to adjust the relative position of the support plate 106 and the fairing box 3. The two top bolts 108 can adjust the ends of the fairing box 3 to achieve the adjustment of the relative position between the product cavity and the airbag 2. The top bolt 108 is responsible for the linear adjustment of the fairing box 3 in the Z direction and the rotation adjustment in the Y direction.

[0070] An anti-retreat component for preventing the hot-pressed airbag base from shifting is also provided on the frame 100, and the anti-retreat component includes an anti-retreat rod 111, the lower end of the anti-retreat rod 111 is fixedly connected to the movable rod of the anti-retreat cylinder 112, the anti-retreat cylinder 112 is fixedly connected to the frame 100, and an anti-retreat hole 109 is provided on the support plate 106, and the anti-retreat cylinder 112 can drive the outer periphery of the anti-retreat rod 111 to be inserted into the anti-retreat hole 109. When the airbag 2 is inflated during use, the outer wall of the airbag 2 abuts against the inner wall of the product, and the product always maintains a fixed relative position with the frame 100 in the mold. Since the airbag 2 is fixed on structures such as the rectifier box 3 and the power component 110, it will cause a certain distance of retreat. The retreating airbag 2 will cause wrinkles on the product, and the airbag is easy to rupture. The anti-retreat rod 111 is inserted into the anti-retreat hole 109, that is, to prevent the relative position of the airbag 2 from changing and to ensure product quality.

[0071] Working process of the hot pressing extrusion device:

[0072] When drying and shaping paper plastic products, it is necessary to support the inside of the product. The airbag is the supporting structure of the inner wall of the product. After the lower template and the upper template of the paper plastic hot pressing are molded together, the airbag is extracted from the inside through the vacuum equipment, and most of the airbag is collected into the airflow channel to reduce the outer diameter of the airbag. At this time, the airbag gradually approaches the mold through the power component and is inserted into the product. After the power component drives the airbag to move into place, the anti-retreat cylinder drives the anti-retreat rod to insert into the anti-retreat hole, the vacuum equipment is turned off, and then the external inflation equipment inflates the inside of the airbag. The airbag expands so that the outer wall of the airbag abuts against the inner wall of the product. At this time, the anti-retreat rod ensures that the relative position of the airbag and the product is fixed, ensuring product quality.

[0073] After the airbag completes the extrusion process, turn off the inflation equipment, turn on the vacuum equipment, and retract the anti-retraction cylinder. At this time, the airbag shrinks into the airflow channel, and the power component drives the airbag away from the product until the airbag successfully leaves the product, and then turn off the vacuum equipment.

[0074] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An extrusion structure for producing plant fiber products, characterized in that: The method comprises a guide column (1) and an expansion body arranged on its periphery, wherein the guide column (1) is a supporting structure of the expansion body, and recyclable objects can be filled into the expansion body through the guide column (1) to expand the expansion body, and the expanded expansion body is used to squeeze the inner wall of the product to be processed; The recyclable object is preferably gas; the expandable body is preferably an air bag.

2. An extrusion structure for producing plant fiber products according to claim 1, characterized in that: The expansion body is sleeved on the outer periphery of the guide column (1), and an air flow channel (11) is provided on the guide column (1). A device for filling recyclable objects fills the expansion body with recyclable objects through the air flow channel (11); a device for extracting recyclable objects extracts the recyclable objects into the expansion body through the air flow channel (11), so that a negative pressure is formed in the air flow channel (11), and the expansion body is received in the air flow channel (11).

3. A device for producing plant fiber products, characterized in that: The invention comprises a rectifier box (3) and at least two expansion bodies, wherein the interior of the rectifier box (3) is a hollow chamber, the filling end of each expansion body is connected to the hollow chamber of the rectifier box (3), an air inlet nozzle and an air outlet nozzle are respectively arranged on the hollow chamber, the air inlet nozzle is externally connected to a device for filling recyclable objects, and the air outlet nozzle is externally connected to a vacuum device or to the air, and the device for filling recyclable objects causes the expansion body to expand, thereby squeezing the inner wall of the product to be processed; The recyclable object is preferably gas; the expandable body is preferably an air bag.

4. The device for producing plant fiber products according to claim 3, characterized in that: A one-way speed regulating valve (4) is installed at the filling end of each expansion body, and the one-way speed regulating valve (4) is used to control the filling speed of the expansion body by the recyclable object.

5. The device for producing plant fiber products according to claim 3, characterized in that: The invention comprises a base (5), a limiting structure (6) is installed on the upper end of the base (5), and the base (5) is detachably connected to a rectifier box (3) via a quick lock structure, the limiting structure (6) is used to limit the left-right relative position of the base (5) and the rectifier box (3), and a plurality of expansion bodies are evenly distributed on the rectifier box (3), and the expansion bodies are used to extrude the inner wall of the product to be processed.

6. The device for producing plant fiber products according to claim 5, characterized in that: The outer wall of the rectifier box (3) is provided with a limiting groove (31), one end of the stopper (62) is located in the limiting groove (31), the other end of the stopper (62) is provided with a threaded hole, an adjusting bolt is installed in the threaded hole, one end of the adjusting bolt abuts against the base (5) to adjust the front and rear relative position of the rectifier box (3) relative to the base (5), a through hole is provided in the middle of the stopper (62), one end of the fixing bolt passes through the through hole and is fixedly connected to the base (5).

7. The device for producing plant fiber products according to claim 5, characterized in that: The quick-lock structure comprises a front top and a rear top, the front top comprises a push pin (7) and a spring (8) arranged on its periphery, and the two ends of the spring (8) are respectively fixedly connected to the periphery of the push pin (7) and the upper end of the base (5), one end of the push pin (7) abuts against the front side of the rectifier box (3), the rear top comprises a buckle (9), and a slot is provided at the upper end of the base (5), one end of the buckle (9) is buckled into the slot, and the other end of the buckle (9) is fixedly connected to the outer wall of the rectifier box (3).

8. A device for producing plant fiber products according to claim 3, comprising a bottom plate (101), wherein both ends of the bottom plate (101) are detachably connected to the periphery of the rectifier box (3), an adjusting bolt (104) is installed on the bottom plate (101), one end of the adjusting bolt (104) is abutted against one side of the rectifier box (3), and the adjusting bolt (104) is used to adjust the lateral relative position of the rectifier box (3) and the bottom plate (101), and both ends of the bottom plate (101) are also A top bolt (108) is respectively provided, and the top bolt (108) is used to adjust the height difference between the end of the rectifier box (3) and the corresponding end of the bottom plate (101); a power component (110) is installed on the lower side of the bottom plate (101); a plurality of expansion bodies are installed on the rectifier box (3); the power component (110) is fixedly connected to the frame (100); and the power component (110) is used to drive the bottom plate (101), the rectifier box (3) and the expansion body to move relative to the frame (100).

9. The device for producing plant fiber products according to claim 8, characterized in that: An anti-recoil assembly for preventing the expansion body from being displaced is also provided on the frame (100), and the anti-recoil assembly includes an anti-recoil rod (111), the lower end of the anti-recoil rod (111) is fixedly connected to the movable rod of the anti-recoil cylinder (112), the anti-recoil cylinder (112) is fixedly connected to the frame (100), and an anti-recoil hole (109) is provided on the support plate (106), and the cylinder can drive the outer periphery of the anti-recoil rod (111) to be inserted into the anti-recoil hole (109).

10. The device for producing plant fiber products according to claim 8, characterized in that: An adjusting bolt (104) is arranged in the middle of the bottom plate (101), an adjusting slot is arranged on one side of the rectifier box (3), an end of the adjusting bolt (104) is located in the adjusting slot, and the adjusting bolt (104) is used to adjust the position of the rectifier box (15) relative to the bottom plate (101) in the X direction, a supporting plate (106) is installed at the lower end of the bottom plate (101), and the supporting plate (106) is sleeved to the outer periphery of the pin shaft (107), and the supporting plate (106) can rotate along the axis of the pin shaft (107) relative to the frame (100) and the power component (110), and a top bolt (108) is arranged on both sides of the supporting plate (106), the upper end of the top bolt (108) is abutted against the outer wall of the rectifier box (3), and the top bolt (108) is used to adjust the relative position of the rectifier box (15) relative to the bottom plate (101) in the Z direction.

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