Hot pressing system for plant fiber products

Abstract

According to the hot-pressing system for the plant fiber products, a lower hot-pressing platform or an upper hot-pressing platform is fixedly installed on a mold closing power assembly, the mold closing power assembly provides power for opening and closing of the lower hot-pressing platform and the upper hot-pressing platform, and mold closing of the lower hot-pressing platform and the upper hot-pressing platform is used for hot pressing of paper-plastic products. The transverse moving power assembly is used for driving the hot-pressing lower platform or the hot-pressing lower platform to get away from or get close to the upstream procedure, and one end of the internal expansion assembly is used for extruding the inner wall of a product to be machined. According to the hot-pressing system for the plant fiber products, the lower hot-pressing platform moves relative to the upper hot-pressing platform through mold closing power to achieve mold closing of wet paper-plastic products, after the lower hot-pressing platform and the upper hot-pressing platform are subjected to mold closing, heating and air suction are conducted on the wet paper-plastic products, and hot-pressing drying of the paper-plastic products is achieved; full-course automatic production is achieved, positioning is accurate, the machining efficiency is high, and the production quality is controllable.

Description

Technical Field

[0001] The invention belongs to the field of plant fiber molding production equipment, in particular to a hot pressing system for 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 blister-formed in a paper-plastic forming chamber. At this time, the blister-formed products are wet and need to be hot-pressed and dried. The existing technology for hot-pressing and drying occupies a large space, has high labor intensity, low efficiency, and poor automation. Summary of the invention

[0004] In view of this, the present invention aims to propose a hot pressing system for plant fiber products to solve the problems in the prior art of hot pressing and drying a closed container with an opening made of plant fibers, that is, the equipment occupies a large space, the labor intensity is high, the efficiency is low, and the degree of automation is poor.

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

[0006] A hot pressing system for plant fiber products comprises a lateral movement force component, and the lateral movement force component is installed on a frame, a hot pressing lower platform or a hot pressing upper platform is fixedly installed on a mold clamping power component, the mold clamping power component provides power for the opening and closing of the hot pressing lower platform and the hot pressing upper platform, the mold clamping of the hot pressing lower platform and the hot pressing upper platform is used for hot pressing paper plastic products, and the lateral movement force component is used for driving the hot pressing lower platform or the hot pressing to move away from or close to an upstream process, and also comprises an internal expansion component, and the internal expansion component can move close to or away from the hot pressing upper platform and the hot pressing lower platform, and one end of the internal expansion component is used for extruding the inner wall of the product to be processed.

[0007] Furthermore, the lateral movement power assembly includes a first guide rail, and a plurality of mold clamping power assemblies are arranged on the first guide rail, and each mold clamping power assembly can slide axially along the first guide rail.

[0008] Furthermore, the transverse movement power assembly further includes a first lead screw and a transverse movement nut rotationally connected to the first lead screw, a first motor and a transverse movement nut are installed on the mold clamping power assembly, and the first motor provides rotational power for the nut, so that the nut moves along the axial direction of the first lead screw, thereby driving the mold clamping power assembly to slide axially along the first guide rail; or,

[0009] The transverse movement power assembly also includes a first lead screw, a transverse movement nut rotationally connected to the first lead screw, and a first motor. The transverse movement nut is arranged on the mold closing power assembly. The first motor provides rotational power to the first lead screw, so that the nut moves axially along the first lead screw, thereby driving the mold closing power assembly to slide axially along the first guide rail.

[0010] Furthermore, the mold clamping power assembly includes a first plate body, a lateral movement power assembly is arranged on the first plate body, and at least two first support plates are arranged between the hot pressing lower platform or the hot pressing upper platform and the first plate body;

[0011] The two ends of each first support plate are respectively a rotating end and a sliding end, the rotating end is rotatably connected to the hot pressing lower platform or the hot pressing upper platform, the sliding end of the first support plate is rotatably connected to the clamping nut, the clamping nut is screwed on the second lead screw, and the second motor provides rotational power for the second lead screw, so that the clamping nut slides along the axial direction of the lead screw;

[0012] When the second lead screw rotates, the plurality of first support plates slide in the opposite direction on the second lead screw through the corresponding clamping nuts, so that the hot pressing lower platform or the hot pressing upper platform moves up and down relative to the first plate body.

[0013] Furthermore, the hot pressing lower platform and the hot pressing upper platform are arranged opposite to each other, and the hot pressing upper platform and the hot pressing lower platform include a first air chamber plate, and a lower mold or an upper mold is installed at one end of the first air chamber plate, and an external vacuum or inflation device is connected to the lower mold or the upper mold through the air path of the first air chamber plate.

[0014] Furthermore, the hot pressing lower platform also includes a first lower platform, which is a base, and a first air chamber plate is placed on the upper end of the first lower platform, and a plurality of first air flow channels are evenly distributed inside the first air chamber plate, and each air flow channel is connected to an air outlet or an air inlet, and a plurality of air holes are evenly distributed on the first air chamber plate, and each air hole is connected to the first air flow channel, and an external air suction device is connected to the interior of the lower mold through the air outlet, the first air flow channel and the air hole in sequence; or an external inflation device is connected to the interior of the lower mold through the air inlet, the first air flow channel and the air hole in sequence;

[0015] Or, the hot pressing upper platform also includes a first upper platform, which is a base, and a first air chamber plate is placed on the upper end of the first upper platform, and a plurality of first air flow channels are evenly distributed inside the first air chamber plate, and each air flow channel is connected to an air outlet or an air inlet, and a plurality of air holes are evenly distributed on the first air chamber plate, and each air hole is connected to the first air flow channel, and an external vacuum device is connected to the interior of the upper mold via the air outlet, the first air flow channel and the air holes in sequence; or an external inflation device is connected to the interior of the upper mold via the air inlet, the first air flow channel and the air holes in sequence.

[0016] Furthermore, the air plug in the air hole is removable.

[0017] Furthermore, the internal expansion assembly includes a tensioning part and an adjustment base arranged at one end thereof, a power component is arranged on one side of the adjustment base, the power component is fixedly mounted on the frame, one end of the tensioning part is used to extrude the side wall of the product to be processed, the adjustment base is used to adjust the relative position of the tensioning part and the upper mold and the lower mold, the power component is used to drive the adjustment base and the tensioning part to approach or move away from the upper mold, and the adjustment base is used to adjust the relative position between the tensioning part and the hot pressing upper mold and the lower mold.

[0018] Furthermore, an anti-recoil rod is arranged on the frame, and the end of the anti-recoil rod can be inserted into the adjustment base, and the anti-recoil rod is used to prevent the expanded tensioning part from being displaced from the upper mold or the lower mold.

[0019] Furthermore, a plurality of tensioning components are arranged circumferentially around the outer periphery of the hot pressing lower platform and the hot pressing upper platform, and the tensioning components are used to fix the relative positions of the hot pressing upper mold, the lower mold and the hot pressing upper platform and the hot pressing lower platform.

[0020] Furthermore, the tensioning assembly includes a tensioning cylinder, a tensioning seat is arranged at the movable end of the tensioning cylinder, the tensioning cylinder is fixedly installed on the periphery of the hot pressing lower platform or the hot pressing upper platform, the tensioning cylinder is used to drive the tensioning seat to abut against or move away from the hot pressing lower platform or the hot pressing upper platform, and the hot pressing upper mold or the lower mold is installed between the tensioning seat and the hot pressing lower platform or the hot pressing upper platform.

[0021] Furthermore, the lateral force assembly drives the hot pressing lower platform away from or close to the upstream process, and a cloth-supporting structure is connected to one side of the lateral force assembly, which can be driven by the lateral force assembly to the bottom of the hot pressing upper platform to receive the processed products on the hot pressing upper platform, thereby completing the automatic material collection.

[0022] Compared with the prior art, the hot pressing system for plant fiber products described in the present invention has the following features:

[0023] Beneficial effects:

[0024] 1. The horizontal moving power component drives the upper / lower hot pressing platform to receive the wet closed container products with openings after processing in the upstream process (hereinafter referred to as products), and can return to the original workstation of the hot pressing device. The upper and lower hot pressing platforms realize the mold closing processing of the products through the mold closing power component. After the upper and lower hot pressing platforms are molded, the wet products are heated and inhaled. At the same time, the expansion body enters the product and presses its inner wall to discharge excess moisture, realizing the hot pressing drying of paper plastic products. The setting of this device can effectively realize the automatic hot pressing drying of products and improve efficiency.

[0025] 2. The lateral force component can realize the transfer of the processed products of the previous process. The specific structure adopts the method of using a servo motor to drive the nut and screw to control the displacement of the upper / lower platform of the hot pressing. The moving distance has high accuracy. Compared with the traditional transfer method, it saves the floor space of the traditional transfer device and the space reserved for the traditional transfer device to enter the platform.

[0026] 3. Because the lateral force component can achieve lateral movement and the moving distance is accurate, this component structure can be used to achieve the fine-tuning function of the lateral alignment of the upper and lower platforms of the hot press. Compared with the traditional manual alignment adjustment method, the device of this patent can improve the fine-tuning accuracy and efficiency and reduce the labor intensity of personnel.

[0027] 4. The structural setting of the tensioning component can realize the pneumatic locking function, which reduces the labor intensity of personnel compared with the traditional manual locking method using screws; at the same time, it saves the operating space reserved inside the platform caused by the traditional manual locking method.

[0028] 5. The combination of the lateral force component and the tensioning component further saves the operating space reserved for the upper and lower platforms of the hot press, thereby reducing the mold closing movement distance, improving the mold closing efficiency and reducing energy loss.

[0029] 6. The structure of the mold closing power component adopts a motor to drive the nut and screw to drive the support plate, so that the upper / lower platform of the hot pressing can be lifted and lowered for mold closing. When the mold is about to be closed, the moving platform speed is required to be lower, so a motor that can be precisely controlled is selected for control. Here, a servo motor is used as an example. This technology can achieve high-speed movement except for the stage of mold closing, change the speed curve, and improve production efficiency; because the motor cooperates with the screw structure to achieve precise control of the lifting height of the platform, it avoids collision or gap between the platform during mold closing, resulting in damage to the product or parts; because the motor cooperates with the screw structure to achieve precise control of the lifting height of the platform, according to different specifications of the processed products, the mold opening height of the hot pressing platform can be reduced as much as possible, the mold opening time can be reduced, and the production efficiency can be improved.

[0030] Another problem to be solved: In the prior art, when hot pressing and drying paper-plastic products, since the hot pressing time is twice the molding time, it is necessary to wait for the products in the hot pressing process to be completed and transferred after the molding process is completed, and then the products in the molding process can enter the hot pressing device for heating, resulting in too much waiting time in the molding process and low overall system efficiency.

[0031] At least two of the above-mentioned plant fiber products are provided with a hot pressing system, wherein the multiple hot pressing devices are arranged in the order of the processes, and the power component is moved laterally in the hot pressing device of the latter process, so as to drive the hot pressing lower platform or the hot pressing upper platform therein to move away from or approach the hot pressing lower platform or the hot pressing upper platform that has not moved in the hot pressing device of the previous process.

[0032] Furthermore, the transverse force components of the multiple hot pressing devices all slide axially along the same first guide rail, so that the multiple hot pressing devices have higher precision and better product quality when they are adapted to the mold.

[0033] Compared with the prior art, the hot pressing system of a paper-plastic product described in the present invention has the following beneficial effects: the hot pressing device of the previous process drives the hot pressing upper / lower platform through the lateral moving force component to receive the product processed in the upstream process (forming process / hot pressing process), and the hot pressing device of the subsequent process drives the hot pressing upper / lower platform through the lateral moving force component to the station where the hot pressing upper / lower platform of the previous process is not moved, and closes the mold with it, and opens the mold after receiving the product in the hot pressing device of the previous process. At this time, the hot pressing devices of the previous process and the subsequent process return to the original station through the lateral moving force component respectively, and then continue the hot pressing process. Therefore, the product in the forming process does not need to wait for the hot pressing device of the first station to completely dry the product. According to the above structure, the unfinished product in the first station can be transferred to the hot pressing device of the subsequent station for further drying. At this time, the first station can receive the product in the forming process and dry it for the first time.

[0034] The multi-station hot pressing device is set up to improve production efficiency while further saving floor space and improving product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] 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:

[0036] Figure 1 This is a schematic structural diagram of a hot pressing system for plant fiber products according to an embodiment of the present invention;

[0037] Figure 2 It is a front view schematic diagram of a hot pressing system for plant fiber products according to an embodiment of the present invention;

[0038] Figure 3 It is a structural schematic diagram of the mold clamping power assembly according to an embodiment of the present invention;

[0039] Figure 4 It is a front view schematic diagram of the mold clamping power assembly according to an embodiment of the present invention;

[0040] Figure 5 It is a schematic cross-sectional structure diagram of the hot pressing platform according to an embodiment of the present invention;

[0041] Figure 6 This is a schematic diagram of the explosion structure of the hot pressing platform according to an embodiment of the present invention;

[0042] Figure 7It is a structural schematic diagram of the assembly of the lower mold and the mold back plate according to an embodiment of the present invention;

[0043] Figure 8 This is a schematic structural diagram of a mold back plate according to an embodiment of the present invention;

[0044] Fig. 9 A bottom schematic diagram of a mold back plate according to an embodiment of the present invention;

[0045] Fig.10 This is a schematic structural diagram of an internal expansion assembly according to an embodiment of the present invention;

[0046] Fig.11 It is a structural schematic diagram of the tensioning part according to an embodiment of the present invention;

[0047] Fig.12 It is a schematic diagram of the exploded structure of the adjustment base according to an embodiment of the present invention;

[0048] Fig.13 It is a front view schematic diagram of the assembly of the tensioning part and the frame according to the embodiment of the present invention;

[0049] Fig.14 It is a schematic diagram of fixing the hot pressing lower platform and the hot pressing upper platform of the tensioning assembly according to an embodiment of the present invention;

[0050] Fig.15 It is a structural schematic diagram of the tensioning assembly according to an embodiment of the present invention;

[0051] Fig.16 It is a front view schematic diagram of the tensioning assembly according to an embodiment of the present invention;

[0052] Fig.17 It is a schematic diagram of the exploded structure of the tensioning assembly according to an embodiment of the present invention;

[0053] Fig.18 It is a cross-sectional schematic diagram of the cooperation among the upper sleeve, the tension spring and the ball according to the embodiment of the present invention;

[0054] Fig.19 This is a schematic diagram of the exploded structure of a product bottom template of a closed container with an opening according to an embodiment of the present invention;

[0055] Fig. 20 This is a schematic diagram of the structure in which the opening and closing cylinder, the positioning column and the positioning plate according to an embodiment of the present invention are installed on a hot pressing platform.

[0056] Description of reference numerals:

[0057] 1. Frame; 2. Transverse moving power assembly; 3. Clamping power assembly; 31. First plate; 32. First support plate; 33. Second lead screw; 34. Clamping nut; 35. First guide column; 36- Second motor; 4. Hot pressing lower platform; 41. First lower platform; 42. First heat insulation board; 43. First air chamber plate; 44. First air flow channel; 45. Air hole; 46. Air plug; 47. Mold back plate; 48. Heating component; 49. Sensor; 5. Hot pressing upper platform; 6. Lower mold; 7. Upper mold; 8. Bottom mold; 9. Internal expansion assembly; 91. Tightening part; 911. Guide column; 912. Air bag; 913. Second air flow channel; 914. Rectifier box; 915. One-way speed regulating valve; 916. Adjustment slot; 92. Adjustment base; 921. Third support plate; 922. Buckle ; 923, locking bolt; 924, adjusting bolt; 925, cam portion; 926, fourth support plate; 927, pin shaft; 928, top bolt; 929, anti-retraction hole; 93, power component; 94, anti-retraction rod; 95, anti-retraction cylinder; 10, tensioning assembly; 101, tensioning cylinder; 102, tensioning seat; 103, connecting rod; 104, pull rod; 105, tensioning spring; 106, tensioning plate ; 107, tensioning groove; 108, adjusting bolt; 109, upper sleeve; 110, tightening spring; 1011, ball; 1012, grip sleeve; 1013, positioning hole; 1014, positioning column; 1015, positioning plate; 1016, opening and closing cylinder; 11, bottle bottom template; 111, second air chamber plate; 112, second heat insulation board; 113, second lower platform; 114, opening and closing assembly. DETAILED DESCRIPTION

[0058] 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.

[0059] 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.

[0060] 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.

[0061] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0062] like Figure 1-20 As shown, a hot pressing system for plant fiber products includes a lateral moving force component 2, and the lateral moving force component 2 is installed on a frame 1, a mold clamping power component 3 is slidably connected to the lateral moving force component 2, a hot pressing lower platform 4 is fixedly installed on the mold clamping power component 3, and a hot pressing upper platform 5 is fixedly installed on the frame 1, the mold clamping power component 3 is used to drive the hot pressing lower platform 4 and the hot pressing upper platform 5 to clamp, and the hot pressing lower platform 4 and the hot pressing upper platform 5 are clamped for hot pressing paper-plastic products, the lateral moving force component 2 is located on one side of a paper-plastic molding chamber, the lateral moving force component 2 is used to drive the hot pressing lower platform 4 away from or close to the paper-plastic molding chamber, the paper-plastic molding chamber is used to perform slurry suction molding operations on slurry to form a wet embryo product, the paper-plastic molding chamber is composed of a plurality of molds, and the molds after clamping form a molding chamber, and the material molded in the paper-plastic molding chamber is a moist, water-rich paper-plastic product, and during operation. The lateral force component displaces the hot pressing lower platform 4 to one side of the paper-plastic molding chamber, and the paper-plastic molding chamber transfers the wet paper-plastic product to the hot pressing lower platform 4, and then the lateral force component 2 carries the hot pressing lower platform 4 to the bottom of the hot pressing upper platform 5, and the hot pressing lower platform 4 moves relative to the hot pressing upper platform 5 through the mold closing power to achieve mold closing of the wet paper-plastic product. After the hot pressing lower platform 4 and the hot pressing upper platform 5 are molded, the wet paper-plastic product is heated and air is sucked to achieve drying and shaping of the paper-plastic product. The production is fully automated, with accurate positioning, high processing efficiency, and controllable production quality. The control method of this embodiment is controlled by a controller, and the control circuit of the controller can be realized by simple programming by technicians in this field. The provision of power is also common knowledge in this field, and this article is mainly used to protect mechanical devices. The control method and circuit connection are not explained in detail in this article.

[0063] The transverse movement force assembly 2 includes a first lead screw, the periphery of the first lead screw is fixedly sleeved on the frame 1, and a first guide rail is arranged on the frame 1, the lower end of the mold clamping power assembly 3 is slidably connected to the periphery of the first guide rail through a first slider, a first motor is installed at the lower end of the mold clamping power assembly 3, a first sprocket is installed on the transmission shaft of the first motor, the periphery of the first lead screw is threadedly connected to the first nut, and a second sprocket is installed on the periphery of the first nut, the first sprocket and the second sprocket form a synchronous transmission structure through a chain, the first guide rail is used to limit the displacement trajectory of the mold clamping power assembly 3, the first motor is the power source of the mold clamping power assembly 3, and the transmission shaft of the first motor drives the first sprocket, the chain, the second sprocket and the first nut to rotate synchronously in turn, and the rotating first nut is linearly displaced along the axial direction of the first lead screw.

[0064] A second sprocket is installed on the periphery of one end of the first nut, and the periphery of the other end of the first nut is rotatably sleeved to the lower end of the mold clamping power component 3 through an axle seat. The first nut is rotatably sleeved to the mold clamping power component 3 through the axle seat, which satisfies the requirement of not interfering with the rotation of the first nut, and at the same time enables the first nut to drive the mold clamping power component 3 to linearly move. At the same time, the first lead screw is fixed, and the first nut rotates in a manner that can realize the integration of multiple mold clamping power components 3 on the first lead screw and the first guide rail, and the movement time nodes and movement distances of each mold clamping power component 3 do not interfere with each other. It is only necessary for each mold clamping power component 3 to be equipped with a set of first sprocket, second sprocket, chain and first motor 23, and the first motor is a servo motor in the prior art.

[0065] The mold clamping power assembly 3 includes a first plate body 31, on which a lateral moving power assembly 2 is arranged, and at least two first support plates 32 are arranged between the hot pressing lower platform 4 or the hot pressing upper platform 5 and the first plate body 31; the two ends of each first support plate 32 are a rotating end and a sliding end respectively, and the rotating end is rotatably connected to the hot pressing lower platform 4 or the hot pressing upper platform 5, and the sliding end of the first support plate 32 is rotatably connected to the mold clamping nut 34, and the mold clamping nut 34 is screwed on the second lead screw 33, and the second motor provides rotational power for the second lead screw 33, so that the mold clamping nut 34 slides axially along the second lead screw 33; when the second lead screw 33 rotates, multiple first support plates 32 slide in the opposite direction on the second lead screw 33 through the corresponding mold clamping nuts, so that the hot pressing lower platform 4 or the hot pressing upper platform 5 moves up and down relative to the first plate body 31; and reverse movement refers to moving relative to or away from each other.

[0066] like Figure 3As shown, a first motor is arranged at the lower end of the first plate body 31, and the second sprocket is rotatably sleeved to the lower end of the first plate body 31 through an axle seat, a first guide hole is arranged on the first plate body 31, the periphery of the first guide column 35 is slidably connected to the first guide hole, and the upper end of the first guide column 35 is fixedly connected to the lower end of the hot pressing platform 4, the first guide column 35 is used to limit the movement trajectory of the hot pressing platform 4, and the upper end of the first support plate 32 is hinged to the lower end of the hot pressing platform 4, the lower end of the first support plate 32 is hinged to the periphery of the clamping nut 34, and the inner ring of the clamping nut 34 is threadedly connected to the periphery of the second lead screw 33, and the periphery of the second lead screw 33 is rotatably sleeved to the first plate At the lower end of the body 31, one end of the second lead screw 33 is fixedly connected to the transmission shaft of the second motor 36, and the outer periphery of the second motor 36 is fixedly connected to the lower end of the first plate body 31. The transmission shaft of the second motor 36 drives the second lead screw 33 to rotate, and the mold nut 34 is kept stationary by the first support plate 32, the hot pressing platform 4 and the first guide column 35. The mold nut 34 drives the lower end of the first support plate 32 to slide linearly, and the upper end of the first support plate 32 and the hot pressing platform 4 are limited by the first guide column 35 to slide up and down. The two first support plates 32 moving in opposite directions are used to lift the hot pressing platform 4 to ensure the stability of the operation. At the same time, the device is compactly installed and the space utilization is reasonable.

[0067] The hot pressing lower platform 4 and the hot pressing upper platform 5 have the same structure and are arranged opposite to each other. The hot pressing lower platform 4 includes a first lower platform 41, a first heat insulation board 42 and a first air chamber board 43. The first lower platform 41 is a base. The first heat insulation board 42 and the first air chamber board 43 are arranged in sequence on the upper end of the first lower platform 41. The lower mold 6 or the upper mold 7 is installed on the upper end of the first air chamber board 43. A plurality of first air flow channels 44 are evenly distributed inside the first air chamber board 43, and each of the first air flow channels 44 is connected to the air outlet. A plurality of air holes 45 are evenly distributed on the first air chamber board 43, and each of the air holes 45 is connected to the first air flow channel 44. The external exhaust equipment is connected to the lower mold 6 through the air outlet, the first air flow channel 44 and the air holes 45 in sequence. The lower end of the first lower platform 41 of the hot pressing lower platform 4 The second support plate 39 is installed, and the lower platform of the hot pressing upper platform 5 is fixedly connected to the frame 1. An air inlet is provided on the first air chamber plate 43. Pressure regulating valves are respectively installed on the air inlet and the air outlet 45. The external gas injection equipment is connected to the interior of the lower mold 6 through the air outlet, the first air flow channel 44 and the air hole 45 in sequence. The first heat insulation board 42 is a heat insulation material such as bakelite. The first heat insulation board 42 is used to reduce and slow down the heat transfer between the hot pressing lower platform 4 and the hot pressing upper platform 5, reduce energy consumption, improve the working environment, and increase the service life of the components. The first air chamber plate 43 is used to divert the pressurized gas medium at the air inlet. In order to improve production efficiency during implementation, multiple product stations are usually arranged on the mold. The diversion of the first air chamber plate 43 ensures equal pressure in multiple product stations.

[0068] like Figure 7 and 8As shown, a plurality of lower molds 6 are evenly distributed on the upper end of the first air chamber plate 43, and each air hole 45 is provided with an internal thread, and an air plug 46 can be detachably installed in each air hole 45. A mold back plate 47 is installed on the first lower platform 41, and an upper mold 7 or a lower mold 6 is installed on one side of the mold back plate 47, and a plurality of mounting grooves are evenly distributed on the other side of the mold back plate 47, each mounting groove is used to fill a heating component 48, and a sensor 49 for detecting its temperature is provided on the mold back plate 47. A plurality of air holes 45 are also provided on the mold back plate 47, and an air plug 46 can be detachably installed in each air hole 45. The air holes 45 of the mold back plate 47 correspond to the air holes 45 of the first air chamber plate 43 one by one, and the air plugs 46 can be detachably installed on the air holes 45 to allow the first air chamber plate 43 to be heated. The chamber plate 43 and the mold back plate 47 have common properties. In production, different paper-plastic products have different specifications and corresponding layout specifications. When switching between different products, you only need to replace the product mold, and then install or remove the air plug 46 accordingly to complete the adaptation of the first air chamber plate 43, the mold back plate 47 and the product mold, which improves the mold change efficiency and reduces the equipment cost. In actual applications, the air holes 45 of the first air chamber plate 43 and the mold back plate 47 can be blocked and disassembled as soon as they meet practical requirements, and they can also be blocked and disassembled separately, which will not be repeated here.

[0069] An internal expansion component 9 is arranged on one side of the hot pressing upper platform 5, and the internal expansion component 9 can be close to or away from the hot pressing upper platform 5. One end of the internal expansion component 9 is used to extrude the side wall of the product to be processed. The internal expansion component 9 is mainly used on bottle-shaped paper-plastic products. One end of the internal expansion component 9 is used to extrude the inner wall of the bottle-shaped paper-plastic product to improve the drying efficiency and ensure that the product is not deformed.

[0070] The internal expansion assembly 9 includes a tensioning part 91 and an adjustment base 92 arranged at one end thereof, a power component 93 is arranged on one side of the adjustment base 92, and the power component 93 is fixedly mounted on the frame 1. One end of the tensioning part 91 is used to extrude the side wall of the product to be processed, and the adjustment base 92 is used to adjust the relative position of the tensioning part 91 and the upper mold and the lower mold 6. The power component 93 is used to drive the adjustment base 92 and the tensioning part 91 to move closer to or away from the upper mold 7. The adjustment base 92 is used to adjust the relative position between the tensioning part 91 and the hot pressing upper mold and the lower mold 6 to ensure the molding quality. The power component 93 is the power for the tensioning part 91 to move away from or close to the hot pressing upper mold and the lower mold 6. The power component 93 is a cylinder or linear drive in the prior art.

[0071] The tensioning part 91 includes a guide post 911 and an airbag 912 arranged on its periphery, and the guide post 911 is a supporting structure of the airbag 912, and the guide post 911 is connected to an external inflating device and an exhaust device through an air pipe, and the inflating device can fill gas into the airbag 912 through the guide post 911 to expand the airbag 912, and the expanded airbag 912 is used to squeeze the side wall of the product to be processed, and the guide post 911 is used to support the airbag 912, and the airbag 912 is expanded and reduced in diameter through the external inflating device and the exhaust device. When the inflating device does not inflate the airbag 912, the outer diameter of the airbag 912 The power component 93 drives the guide column 911 and the airbag 912 to be inserted into the product, and then the inflation device injects air into the airbag 912 through the guide column 911. The outer wall of the inflated airbag 912 abuts against the inner wall of the product, and the airbag 912 can adapt to and fit the inner wall of the product to prevent the side wall of the product from collapsing and wrinkling. After the hot pressing is completed, the vacuum device exhausts air into the airbag 912 through the guide column 911, and the airbag 912 shrinks to a diameter smaller than the inner diameter of the bottle mouth. The power component 93 drives the guide column 911 and the airbag 912 away from the product, so that the product can be demoulded smoothly.

[0072] A vent hole is provided in the middle of the guide column 911, and a second air flow channel 913 is provided on the side wall of the guide column 911. The inflation device is connected to the interior of the airbag 912 through the air pipe, the vent hole and the second air flow channel 913 in sequence, and the inner edge of the port of the airbag 912 is fixedly connected to the periphery of the guide column 911.

[0073] The second air flow channel 913 is a through groove, which is connected to the vent hole. The end of the guide column 911 is connected to the vacuum pumping device through a pipeline. The vacuum pumping device is connected to the inside of the airbag 912 through the vent hole and the through groove in turn. The through groove is used to accommodate the airbag 912. When the vacuum device draws air into the airbag 912, the airbag 912 shrinks into the through groove. The airbag 912 is made of rubber material. The airbag 912 wrapped around the guide column 911 can be thinned so that most of the rubber airbag 912 is stacked in the through groove. In this way, when the inner diameter of the product bottle mouth is constant, the wall thickness of the airbag 912 can be thickened as much as possible to increase the service life and expansion pressure of the airbag 912.

[0074] The tightening part 91 also includes a rectifying box 914, and a number of guide pillars 911 are evenly distributed on the rectifying box 914, and the feeding end of each guide pillar 911 is located inside the rectifying box 914. An air inlet nozzle and an air outlet nozzle are respectively arranged on the rectifying box 914, and the air inlet nozzle is externally connected to an inflation device, and the air outlet nozzle is externally connected to a vacuum pumping device or to the air. Multiple groups of guide pillars 911 are arranged on the rectifying box 914 to improve production efficiency. The rectifying box 914 is a diversion structure of multiple guide pillars 911, and the air inlet nozzle on the rectifying box 914 is externally connected to an inflation device, and the air outlet nozzle of the rectifying box 914 is externally connected to a vacuum pumping device to ensure that multiple airbags 912 are simultaneously inhaled or exhausted.

[0075] A one-way speed regulating valve 915 is installed at the feeding end of each guide column 911. The one-way speed regulating valve 915 is used to control the intake flow rate of each guide column 911. The one-way speed regulating valve 915 is an explosion-proof structure of the airbag 912. During production, if a single airbag 912 is damaged and leaks, it will cause insufficient air pressure in the remaining intact airbags 912. The one-way speed regulating valve 915 is used to adjust the intake flow rate of a single airbag 912 so that the pressurized gas medium in the rectifier box 914 can flow evenly into each airbag 912, and the one-way speed regulating valve 915 does not affect the air outlet of the airbag 912.

[0076] The adjustment base 92 includes a third support plate 921, and a buckle 922 is respectively provided at both ends of the third support plate 921, and the rectifier box 914 is fixed relative to the third support plate 921 through the buckle 922. The buckle 922 is used to fix the relative position of the third support plate 921 and the rectifier box 914. Fig.12 As shown, the cross-section of the clip 922 is a U-shaped structure, one end of the third support plate 921 and one end of the rectifier box 914 are respectively located in the U-shaped structure, and the side wall of the U-shaped structure is provided with a first threaded hole, and a locking bolt 923 is installed in the first threaded hole, and one end of the locking bolt 923 is abutted to one side of the third support plate 921 and one side of the rectifier box 914.

[0077] A first fine-tuning hole is provided in the middle of the third support plate 921, and the outer periphery of the adjusting bolt 924 is rotatably sleeved into the first fine-tuning hole. A cam portion 925 is installed at one end of the adjusting bolt 924, and an adjustment slot 916 is provided on one side of the rectifier box 914. The cam portion 925 is located in the adjustment slot 916, and the width of the adjustment slot 916 gradually increases from the middle to the two sides. A first lock nut is installed on the outer periphery of the adjusting bolt 924, and the first lock nut is located on one side of the third support plate 921, and the cam portion 925 is located on the other side of the third support plate 921. The first lock nut is used to lock the relative position of the cam portion 925 and the adjustment slot 916. The outer periphery of the cam portion 925 is a variable diameter structure. When the staff rotates the cam portion 925 through the adjusting bolt 924, the cam portion 925 will drive the rectifier box 914 to move slightly to the left and right sides, thereby realizing fine-tuning of the rectifier box 914, and the adjustment range of this adjustment structure is very small.

[0078] The fourth support plate 926 is installed at the lower end of the third support plate 921, and the power component 93 is installed at the lower end of the fourth support plate 926. A second fine-tuning hole is provided in the middle of the fourth support plate 926. A pin shaft 927 is installed on the power component 93. The outer periphery of the pin shaft 927 is located in the second fine-tuning hole. The fourth support plate 926 can rotate relative to the frame 1 and the power component 93 along the axis of the pin shaft 927. The pin shaft 927 is provided with an external thread. A second lock nut is provided at the outer periphery of the pin shaft 927. The second lock nut is used to lock the relative position of the fourth support plate 926 and the frame 1. During adjustment, the relative position of the frame 1 and the power component 93 always remains unchanged. The staff can rotate the fourth support plate 926 to make the fourth support plate 926 rotate relative to the power component 93 or the frame 1, while the relative position of the mold and the frame 1 remains unchanged, so that the fourth support plate 926 and the mold rotate relative to each other, thereby realizing fine adjustment of the position of the multiple air bags 912 on the rectifier box 914 and the mold.

[0079] A second threaded hole is respectively provided on both sides of the fourth support plate 926, and a push bolt 928 is threadedly connected to the inner thread of each second threaded hole. The upper end of the push bolt 928 abuts against the outer wall of the fairing box 914, and the push bolt 928 and the pin shaft 927 are arranged perpendicular to each other. The push bolt 928 is also used to adjust the relative position of the fourth support plate 926 and the fairing box 914. The two push bolts 928 can adjust the end of the fairing box 914 to achieve the adjustment of the relative position of the mold and the airbag 912.

[0080] An anti-retreat component is also provided on the frame 1 to prevent the internal expansion component 9 from shifting, and the anti-retreat component includes an anti-retreat rod 94, the lower end of the anti-retreat rod 94 is fixedly connected to the movable rod of the anti-retreat cylinder 95, the cylinder is fixedly connected to the frame 1, and an anti-retreat hole 929 is provided on the fourth support plate 926, and the cylinder can drive the outer periphery of the anti-retreat rod 94 to be inserted into the anti-retreat hole 929. When the airbag 912 is inflated during use, the outer wall of the airbag 912 abuts against the inner wall of the product, and the product always maintains a fixed relative position with the frame 1 in the mold. The airbag 912 is fixed on the rectifier box 914, the power component 93 and other structures, which will cause a certain distance of retreat. The retreated airbag 912 will cause wrinkles on the product, and the pressure on the product is insufficient. The anti-retreat rod 94 is inserted into the anti-retreat hole 929, that is, to prevent the relative position of the airbag 912 from changing and to ensure product quality.

[0081] Several tensioning assemblies 10 are arranged circumferentially along the periphery of the mold back plate 47. The tensioning assembly 4 is used to fix the longitudinal relative position of the mold back plate 47 and the hot pressing lower platform 4 and the hot pressing upper platform 5. The hot pressing lower platform 4 and the hot pressing upper platform 5 are respectively provided with actuators. The actuator ends of the actuators are used to fix the lateral relative position of the mold back plate 47 and the equipment hot pressing lower platform 4 and the hot pressing upper platform 5. The upper mold 7 or the lower mold 6 is fixedly installed on the mold back plate 47. The hot pressing lower platform 4 and the hot pressing upper platform 5 of the equipment are provided with tensioning assemblies 10 to facilitate quick installation and lock the relative position of the mold back plate 47. The installation is quick and easy. At the same time, the tensioning assembly 10 is a longitudinal fixing structure of the mold back plate 47. The hot pressing lower platform 4 and the hot pressing upper platform 5 are also provided with actuators for fixing the lateral relative position of the mold back plate 47, which increases the convenience of locking the mold plate.

[0082] Used to lock the relative position of the mold back plate 1 and the opening and closing platform. The opening and closing platform includes an upper platform 3 and a lower platform 2. The mold back plate 1 can be detachably installed on the upper platform 3 and the lower platform 2 respectively. The mold is arranged on the mold back plate 1. The upper platform 3 and the lower platform 2 can move relative to each other for opening and closing the mold. The upper platform 3 or the lower platform 2 is a movable platform. In this embodiment, the lower platform 2 is a movable platform. A paper-plastic hot pressing mold is arranged on the mold back plate 1. The paper-plastic hot pressing mold is used to place the product (wet embryo) formed in the previous process and dry it for shaping. The function of the mold back plate is to fix the paper-plastic hot pressing mold. A plurality of air holes are arranged on the mold back plate 1. The air holes are used to blow and absorb the wet embryo in the paper-plastic hot pressing mold. The hygroscopic embryo is used to discharge excess moisture and water vapor, and the blowing wet embryo is used to peel off the product.

[0083] In this embodiment, the hot pressing lower platform 4 is a movable platform, which can be displaced laterally. The movable platform with laterally displaced is used for lateral fine-tuning of mold closing. The upper platform and / or the lower platform and the mold back plate 47 are fine-tuned in longitudinal relative position through the adjusting bolt 108. In this embodiment, the lower platform is fine-tuned in longitudinal relative position through the adjusting bolt 108, and the adjusting bolt 108 is installed to the mold back plate 47. A fine-tuning structure is set on the platform, and the fine-tuning structure is divided into lateral fine-tuning and longitudinal fine-tuning of the mold back plate 47, which is convenient for the staff to align the opening and closing molds and improve the molding quality.

[0084] A first positioning component is arranged on the mold back plate 47, and a second positioning component is arranged on the opening and closing platform. The first positioning component cooperates with the second positioning component to quickly locate the relative position of the mold back plate 47 and the opening and closing platform. In this embodiment, the first positioning component is a positioning column 1014, and the second positioning component is a positioning plate 1015. A positioning notch is arranged on the positioning plate 1015, and the periphery of the positioning column 1014 is located in the positioning notch to quickly locate the relative position of the mold back plate 47 and the opening and closing platform.

[0085] The actuator is an opening and closing cylinder 1016, and the movable end of the opening and closing cylinder 1016 is used to lock the relative position of the first positioning component and the second positioning component. The opening and closing cylinder 1016 is a push rod cylinder in the prior art. When the outer periphery of the positioning column 1014 is located in the positioning groove of the positioning plate 1015, the movable rod end of the drag rod gas rod abuts against the outer periphery of the first positioning component, which is used to lock the relative position of the first positioning component and the second positioning component.

[0086] The tensioning assembly 10 includes a tensioning cylinder 101, which is a push rod cylinder in the prior art. A tensioning seat 102 is provided at the movable end of the tensioning cylinder 101. The outer periphery of the tensioning cylinder 101 is fixedly installed to the lower platform or the upper platform. The tensioning cylinder 101 is used to drive the tensioning seat 102 to abut against or away from the end surface of the mold back plate 47. The tensioning cylinder 101 is externally connected to an air pump through a pipeline.

[0087] An anti-slip structure is arranged between the tensioning cylinder 101 and the tensioning seat 102, and the anti-slip structure is used to prevent the tensioning seat 102 from falling off under pressure. The anti-slip structure includes a tensioning spring 105. The movable rod of the tensioning cylinder 101 is fixedly connected to one end of the tensioning seat 102 through a connecting rod 103. The tensioning spring 105 is arranged on the periphery of the connecting rod 103, and one end of the tensioning spring 105 is fixedly connected to the periphery of the connecting rod 103, and the other end of the tensioning spring 105 is fixedly connected to a fixed position. The tensioning spring 105 is used to prevent the connecting rod 103 from falling off under pressure.

[0088] The movable rod of the tensioning cylinder 101 is fixedly connected to one end of the tensioning seat 102 through the connecting rod 103. A pull rod 104 is arranged on one side of the tensioning seat 102. The outer periphery of the pull rod 104 abuts against the end surface of the mold back plate 47. The tensioning cylinder 101 is a push rod cylinder in the prior art. The movable rod of the tensioning cylinder 101 drives the connecting rod 103, the tensioning seat 102 and the pull rod 104 to abut against the end surface of the mold back plate 47 in turn.

[0089] A tensioning spring 105 is arranged on the periphery of the connecting rod 103, and the two ends of the tensioning spring 105 are respectively fixedly connected to the periphery of the tensioning cylinder 101 and one end of the tensioning seat 102. When the tensioning cylinder 101 is damaged or loses pressure, the tensioning spring 105 is an anti-detachment structure of the mold back plate 47 to ensure production safety. In the case of normal movement, the cylinder drives the connecting rod 103 and the tensioning plate 106 to move downward or upward. When the tensioning cylinder 101 is damaged or loses pressure, the tensioning spring 105 will provide an upward elastic force to the pull rod 104 to prevent the tensioning plate 106 from moving downward due to gravity, which may cause the mold plate to fall off the platform.

[0090] A tensioning plate 106 is arranged on the mold back plate 47, and a fine-tuning hole is arranged in the middle of the tensioning plate 106. An adjusting bolt 108 is connected to the thread in the fine-tuning hole, and one end of the adjusting bolt 108 abuts against the upper platform or the lower platform. The adjusting bolt 108 is used to lock the relative position of the tensioning plate 106 and the upper platform or the lower platform. A tensioning groove 107 or a boss or other structure is respectively arranged on both sides of the tensioning plate 106. As long as it is ensured that the pull rod 104 can abut against this position and generate abutting force with the tensioning plate 106, each tensioning groove 107 corresponds to a pull rod 104, and the tensioning plate 106 can be an I-shaped structure. A pull rod 104 is arranged in each tensioning groove 107. The structure is easy to install, and this structure has a certain amount of floating, which can prevent the rigid alignment from damaging related components, and the alignment is accurate.

[0091] The anti-retraction structure includes an upper sleeve 109, and a tensioning spring 110 is arranged inside the sleeve, a ball 1011 is arranged at one end of the tensioning spring 110, a grip sleeve 1012 is arranged at the periphery of one end of the adjusting bolt 108, and positioning holes 1013 are evenly distributed radially at one end of the grip sleeve 1012, and the periphery of the ball 1011 is located in the positioning hole 1013. The ball 1011 and the tensioning spring 110 are a mechanism for preventing the grip sleeve 1012 from rotating relative to each other, and the tensioning spring 110 is compressed to the sleeve The inner part provides elastic force for the ball 1011, and the outer periphery of the ball 1011 is elastically connected to a positioning hole 1013 by the spring, thereby fixing the relative position of the grip sleeve 1012, the sleeve, and the tensioning plate 106, and preventing the grip sleeve 1012 from rotating relatively due to vibration during production. When it is necessary to lock or fine-tune the mold back plate 47, the staff can rotate the grip sleeve 1012 forcefully to make the ball 1011 roll into other positioning holes 1013 to achieve the purpose of moving the end of the adjustment bolt 108.

[0092] The upper mold 7 and the lower mold 6 can be configured as follows Figure 7 In order to facilitate demoulding of the bottle-shaped paper-plastic product and control the hot pressing temperature of the different outer diameters and bottle thicknesses, the bottle-shaped product mold is configured as a bottle body mold and a bottom mold 8, and the bottle body mold is divided into an upper mold 7 and a lower mold 6 arranged opposite to each other, as shown in FIG. Figure 3 As shown, the lower mold 6 is shown, and the lower end of the bottom mold 8 needs to be equipped with a bottle bottom template 11, and the bottle bottom template 11 is located on one side of the upper mold 7 and the lower mold 6, and the bottle bottom template 11 is fixedly installed on the mold back plate 47.

[0093] The bottle bottom template 11 is similar in structure to the hot pressing lower platform 4 and the hot pressing upper platform 5 but has different specifications. The bottle bottom template 11 includes a second air chamber plate 111, a second heat insulation plate 112, a second lower platform 113 and an opening and closing component 114. One end of the opening and closing component 114 is fixedly connected to the mold back plate 47, and the other end of the opening and closing component 114 is fixedly installed on one side of the second lower platform 113, and the opening and closing component 114 can drive the second lower platform 113 to approach or move away from the upper mold 7 and the lower mold 6. The other side of the second lower platform 113 is fixedly connected to one side of the second heat insulation plate 112, and the other side of the second heat insulation plate 112 is fixedly connected to one side of the second air chamber plate 111. The bottom mold 8 is installed on the other side of the second air chamber plate 111. The opening and closing component 114 is a push rod cylinder or a linear drive in the prior art.

[0094] Working process

[0095] Material loading process:

[0096] During implementation, the mold clamping power assembly 3 can be connected to the hot pressing upper platform 5 or to the hot pressing lower platform 4, one of which can be selected; the lateral movement power assembly 2 can drive the hot pressing upper platform 5 or the hot pressing lower platform 4 away from or close to the upstream process, one of which can be selected; the lateral movement power assembly 2 and the mold clamping assembly assembly 3 can respectively drive the hot pressing upper platform 5 or the hot pressing lower platform 4 to move, such as Figure 1-2As shown, the present embodiment comprises two groups of hot pressing mechanisms, each group of hot pressing mechanisms comprises a hot pressing upper platform 5 and a hot pressing lower platform 4. For the convenience of explaining the movement process, the hot pressing mechanism close to the paper-plastic molding chamber is hot pressing mechanism No. 1, and the downstream of hot pressing mechanism No. 1 is hot pressing mechanism No. 2. The paper-plastic molding chamber is composed of a plurality of molds, and the molds after mold closing form a molding chamber. A mold closing power component 3 is arranged under each hot pressing lower platform 4, and each mold closing power component 3 is slidably connected to the first guide rail. The mold closing power component 3 of hot pressing mechanism No. 1 is close to the bottom of the paper-plastic molding chamber. During the process, the mold closing power component 3 of hot pressing mechanism No. 2 and the lateral movement power component drive the hot pressing lower platform 4 of hot pressing mechanism No. 2 to descend and open the mold and close to the bottom of the hot pressing upper platform 5 of hot pressing mechanism No. 1, and then rise to close the mold, and the wet paper-plastic product in the paper-plastic molding chamber is transferred to the hot pressing upper platform 5 of hot pressing mechanism No. 1 (the transfer method is that the mold of the previous process is blown up, and the mold of the next process is sucked up). Air, and the product transfer is completed when the mold is closed), then the lateral movement force component and the mold closing power component 3 respectively drive the two hot pressing lower platforms 4 to reset, and the No. 1 hot pressing mechanism performs the first drying on the wet paper-plastic product. When the pre-drying set time is reached, the mold closing power component 3 respectively drives the two hot pressing lower platforms 4 and the corresponding hot pressing upper platform 5 to open the mold, and then the lateral movement force component 2 drives the No. 1 hot pressing lower platform 4 and the No. 2 hot pressing lower platform 4 to enter the previous process and close the mold, and the paper-plastic molding chamber transfers the wet product again, and the hot pressing upper platform 5 of the No. 1 hot pressing mechanism transfers the first dried product sucked thereon to the paper-plastic hot pressing lower mold of the No. 2 hot pressing mechanism, and then the mold closing power component 3 and the lateral movement force component 2 reset the two hot pressing lower platforms 4, the No. 1 hot pressing mechanism performs the first drying on the wet product, and the No. 2 hot pressing mechanism performs the second drying on the first dried product. After the second drying is completed, the dried product is collected by the downstream device to ensure the continuity of hot pressing. The process of the two mold clamping power components 3 clamping the hot pressing lower platform 4 and the hot pressing upper platform 5 is that the transmission shaft of the second motor 36 drives the second lead screw 33 to rotate, and the mold clamping nut 34 is kept stationary by the first support plate 32, the hot pressing lower platform 4 and the first guide column 35, the mold clamping nut 34 drives the lower end of the first support plate 32 to slide linearly, and the upper end of the first support plate 32 and the hot pressing lower platform 4 are limited by the first guide column 35 to slide up and down.

[0097] The process of hot pressing the product after the hot pressing lower platform and the hot pressing upper platform are molded together:

[0098] The working principle and process of the hot pressing molding of the product by the above-mentioned No. 1 hot pressing mechanism and No. 2 hot pressing mechanism are the same. When the hot pressing upper platform 5 and the hot pressing lower platform 4 are reset to their original positions and the molds are closed, the controller controls the external vacuum equipment to be connected to the upper and lower molds through the air outlets of the upper and lower hot pressing platforms, and the corresponding first air flow channels 44 and air holes 45 in turn, so as to suck and dry the wet paper plastic product. At this time, the heating unit in the mold back plate 47 heats the upper and lower molds synchronously to dry and shape the wet product. After the predetermined mold closing time is reached, the controller controls the external inflation equipment to be connected to the lower mold 6 through the air inlet of the hot pressing lower platform 4, the first air flow channel 44 and the air holes 45 in turn, so as to blow and peel the product. At this time, the upper mold 7 still maintains the state of sucking the product until the tooling of the downstream process is transferred to the bottom of the upper mold 7. The upper mold 7 blows and peels the product to the tooling of the downstream process, and the product enters the next process.

[0099] Working process of internal expansion components:

[0100] When the hot pressing lower platform 4 and the hot pressing upper platform 5 are molded together to dry and shape the product, it is also necessary to extrude the inside of the product. The airbag 912 of the internal expansion component 9 is an extrusion structure of the inner wall of the product. The external exhaust device is connected to the inside of the airbag 912 through the air pipe, the vent hole and the second air flow channel 913 in turn to evacuate the airbag 912. The airbag 912 shrinks so that most of the airbag 912 is stacked in the guide column 911. The outer diameter of the airbag 912 is smaller than the inner diameter of the bottle mouth. When the hot pressing lower platform 4 and the hot pressing upper platform 5 are molded together, the power component 93 drives the rectifier box 914 and the guide column 911 in turn to insert the airbag 912 into the product. After the power component 93 is in place, The anti-retreat cylinder 95 drives the anti-retreat rod 94 to be inserted into the anti-retreat hole 929, and then the external inflation device is connected to the inside of the airbag 912 through the air pipe, the air hole and the second air flow channel 913 in sequence for inflation. The airbag 912 expands so that the outer wall of the airbag 912 abuts against the inner wall of the product and squeezes it. After reaching the predetermined time of the hot pressing lower platform 4 and the hot pressing upper platform 5 for mold closing, the outer diameter of the airbag 912 shrinks to a state where it can be withdrawn from the bottle mouth, and the anti-retreat cylinder 95 drives the anti-retreat rod 94 to pull out of the anti-retreat hole 929, and the power component 93 drives the rectifier box 914, the guide column 911 and the airbag 912 to reset, and then the hot pressing lower platform 4 and the hot pressing upper platform 5 perform the mold opening action again.

[0101] 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. A hot pressing system for plant fiber products, characterized in that: The invention comprises a lateral movement force component (2), and the lateral movement force component (2) is installed on a frame (1); a hot pressing lower platform (4) or a hot pressing upper platform (5) is fixedly installed on a mold clamping power component (3); the mold clamping power component (3) provides power for the opening and closing of the hot pressing lower platform (4) and the hot pressing upper platform (5); the mold clamping of the hot pressing lower platform (4) and the hot pressing upper platform (5) is used for hot pressing paper plastic products; the lateral movement force component (2) is used for driving the hot pressing lower platform (4) or the hot pressing upper platform (5) away from or close to an upstream process; and the invention also comprises an internal expansion component (9), and the internal expansion component (9) can be close to or away from the hot pressing upper platform (5) and the hot pressing lower platform (4); the internal expansion component (9) is used for extruding the inner wall of the product to be processed.

2. A hot pressing system for plant fiber products according to claim 1, characterized in that: The lateral movement power assembly (2) comprises a first guide rail, and a plurality of mold clamping power assemblies (3) are arranged on the first guide rail, and each mold clamping power assembly (3) can slide axially along the first guide rail.

3. A hot pressing system for plant fiber products according to claim 2, characterized in that: The lateral movement power assembly (2) further comprises a first lead screw and a lateral movement nut which is rotationally connected to the first lead screw. A first motor and the lateral movement nut are installed on the mold clamping power assembly. The first motor provides rotational power to the nut, so that the nut moves along the axial direction of the first lead screw, thereby driving the mold clamping power assembly (3) to slide axially along the first guide rail; or, The transverse movement power assembly (2) also includes a first lead screw, a transverse movement nut and a first motor which are rotationally connected to the first lead screw. The transverse movement nut is arranged on the mold closing power assembly. The first motor provides rotational power to the first lead screw, so that the nut moves along the axial direction of the first lead screw, thereby driving the mold closing power assembly (3) to slide axially along the first guide rail.

4. A hot pressing system for plant fiber products according to claim 1, characterized in that: The mold clamping power assembly (3) comprises a first plate body (31), a lateral movement power assembly (2) is arranged on the first plate body (31), and at least two first support plates (32) are arranged between the hot pressing lower platform (4) or the hot pressing upper platform (5) and the first plate body (31); The two ends of each first support plate (32) are respectively a rotating end and a sliding end, the rotating end is rotatably connected to the hot pressing lower platform (4) or the hot pressing upper platform (5), the sliding end of the first support plate (32) is rotatably connected to the clamping nut (34), the clamping nut (34) is screwed onto the second lead screw (33), and the second motor provides rotational power to the second lead screw (33), so that the clamping nut (34) slides axially along the second lead screw (33); When the second lead screw (33) rotates, the plurality of first support plates (32) slide in the opposite direction on the second lead screw (33) via the corresponding clamping nuts (34), so that the hot pressing lower platform (4) or the hot pressing upper platform (5) moves up and down relative to the first plate body (31).

5. The hot pressing system for plant fiber products according to claim 1, characterized in that: The hot pressing lower platform (4) and the hot pressing upper platform (5) are arranged opposite to each other; The hot pressing lower platform (4) also includes a first lower platform (41), a first air chamber plate (43) is arranged on the first lower platform (41), a plurality of first air flow channels (44) are arranged inside the first air chamber plate (43), each of the air flow channels is connected to an air outlet or an air inlet, a plurality of air holes (45) are arranged on the first air chamber plate (43), each of the air holes (45) is connected to the first air flow channel (44), an external air suction device is connected to the interior of the lower mold (6) through the air outlet, the first air flow channel (44) and the air hole (45) in sequence; or an external inflation device is connected to the interior of the lower mold (6) through the air inlet, the first air flow channel (44) and the air hole (45) in sequence; The hot pressing upper platform (5) also includes a first upper platform, on which a first air chamber plate (43) is arranged, a plurality of first air flow channels (44) are arranged inside the first air chamber plate (43), each of which is connected to an air outlet or an air inlet, a plurality of air holes (45) are arranged on the first air chamber plate (43), each of which is connected to the first air flow channel (44), and an external air suction device is connected to the interior of the lower mold (6) through the air outlet, the first air flow channel (44) and the air hole (45) in sequence; or an external inflation device is connected to the interior of the lower mold (6) through the air inlet, the first air flow channel (44) and the air hole (45) in sequence.

6. A hot pressing system for plant fiber products according to claim 1, characterized in that: The hot pressing lower platform (4) and the hot pressing upper platform (5) are arranged opposite to each other, and the hot pressing lower platform (4) and the hot pressing upper platform (5) are respectively installed with a lower mold (6) and an upper mold (7); A plurality of tensioning components (10) are arranged circumferentially around the outer periphery of the hot pressing lower platform (4) and the hot pressing upper platform (5), and the tensioning components (10) are used to fix the relative positions of the hot pressing upper mold (7), the lower mold (6) and the hot pressing upper platform (5) and the hot pressing lower platform (4); Preferably, the tensioning assembly (10) comprises a tensioning cylinder (101), a tensioning seat (102) is arranged at the movable end of the tensioning cylinder (101), the tensioning cylinder (101) is fixedly mounted on the periphery of the hot pressing lower platform (4) or the hot pressing upper platform (5), the tensioning cylinder (101) is used to drive the tensioning seat (102) to abut against or move away from the hot pressing lower platform (4) or the hot pressing upper platform (5), and the hot pressing upper mold (7) or the lower mold (6) is mounted between the tensioning seat (102) and the hot pressing lower platform (4) or the hot pressing upper platform (5).

7. A hot pressing system for plant fiber products according to claim 1, characterized in that: The internal expansion assembly (9) comprises a tensioning part (91) and an adjustment base (92) arranged at one end thereof; a power component (93) is arranged at one side of the adjustment base (92); the power component (93) is fixedly mounted on the frame (1); one end of the tensioning part (91) is used to squeeze the side wall of the product to be processed; the adjustment base (92) is used to adjust the relative position of the tensioning part (91) and the upper mold (7) and the lower mold (6); the power component (93) is used to drive the adjustment base (92) and the tensioning part (91) to approach or move away from the upper mold (7) or the lower mold (6).

8. A hot pressing system for plant fiber products according to claim 7, characterized in that: An anti-retraction rod (94) is arranged on the frame (1), and the end of the anti-retraction rod (94) can be inserted into the adjustment base (92). The anti-retraction rod (94) is used to prevent the expanded tensioning part (91) from being displaced from the upper mold (7) or the lower mold (6).

9. A hot pressing system for plant fiber products according to claim 1, characterized in that: The lateral force component (2) drives the hot pressing lower platform (4) away from or close to the upstream process. A cloth-supporting structure is connected to one side of the lateral force component (2). The cloth-supporting structure can be driven by the lateral force component to the bottom of the hot pressing upper platform (5) to receive the processed products in the hot pressing upper platform (5).

10. A hot pressing system for paper plastic products, characterized in that: At least two hot pressing systems for plant fiber products according to claim 1, wherein a plurality of hot pressing devices are arranged in a process sequence, and a force component (2) is moved laterally in a hot pressing device in a subsequent process to drive a hot pressing lower platform (4) or a hot pressing upper platform (5) in the device to move away from or approach a hot pressing lower platform (4) or a hot pressing upper platform (5) that has not moved in a hot pressing device in a previous process, and the moving hot pressing lower platform (4) or the hot pressing upper platform (5) can be molded with the hot pressing lower platform (4) or the hot pressing upper platform (5); Preferably, the transverse movement force components of the plurality of hot pressing devices all slide axially along the same first guide rail.

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