Blister sheet drying device

Abstract

The utility model provides a kind of blister sheet drying device, comprising: workbench, its inside is provided with slot, slot inside is provided with first connecting groove and second connecting groove;Support, it is installed in the middle of workbench, support inside is symmetrically provided with two groups of sliding slots, one group of sliding slots is provided with through slot;Blister sheet body, it is placed in the top of workbench one side;Drying assembly, it includes screw rod, threaded plate, connecting plate and heating plate, one end of screw rod is rotatably arranged in the side of support.The utility model can move threaded plate by screw rod by twisting handle, so it can move two groups of heating plates simultaneously by two groups of cranks, so it can adjust the distance between heating rod and blister sheet body, so that different specifications of blister sheet body can achieve uniform drying effect, and effectively avoid uneven drying phenomenon of blister sheet body.

Description

Technical Field

[0001] This utility model relates to the field of drying equipment technology, specifically a drying device for thermoformed sheets. Background Technology

[0002] In the field of plastics processing, vacuum forming sheets are a widely used processing material. The manufacturing principle involves heating a flat, rigid plastic sheet to a softened state, then using vacuum adsorption to press the sheet against the surface of a mold. After cooling and solidification, the desired structure is formed. Due to its ease of molding and strong adaptability, this material is widely used in various industries such as plastic packaging, lighting manufacturing, advertising production, and interior decoration, playing a vital supporting role in the production of related products.

[0003] Because vacuum-formed sheets typically retain some moisture after preparation, direct use in subsequent product manufacturing can lead to defects such as bubbles and deformation during the forming process. Therefore, drying is a crucial step in the vacuum-formed sheet processing. To meet the demands of rapid industrial processing, existing drying equipment generally employs heating rods for drying. This method effectively improves the drying efficiency of vacuum-formed sheets, providing a fundamental guarantee for the stability of subsequent forming processes.

[0004] However, existing drying equipment has the following shortcomings: Firstly, most drying equipment uses a fixed installation design for the heating tubes, with a fixed vertical distance between the heating tubes and the thermoformed sheets. When processing thermoformed sheets of different thicknesses and sizes, the fixed distance cannot match the drying requirements of various sheets, easily leading to over-drying of thin sheets (causing embrittlement) or incomplete drying of thick sheets (resulting in residual moisture). Secondly, although some equipment uses adjustable heating plates, the adjustment process requires disassembling the fixing screws of each heating plate, adjusting their positions, and then reinstalling them one by one. This cumbersome operation not only consumes a lot of time but also easily affects the heating uniformity due to installation errors, making it difficult to meet the requirements of continuous and efficient production. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a thermoforming sheet drying device that can solve the existing problems.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows:

[0007] A thermoforming sheet drying device, comprising:

[0008] The workbench has a slot through its inner side, and a first connecting slot and a second connecting slot are provided inside the slot.

[0009] The bracket is installed in the middle of the workbench. Two sets of sliding grooves are symmetrically opened on the inner side of the bracket, one of which has a through groove.

[0010] The thermoformed sheet body is placed on one side of the top of the workbench;

[0011] The drying assembly includes a lead screw, a threaded plate, a connecting plate, and a heating plate. One end of the lead screw is rotatably mounted on one side of the support. The outer side of the lead screw is threaded with a threaded plate. Both ends of the threaded plate are rotatably mounted with cranks. One end of the crank is rotatably mounted with a connecting plate. The connecting plate is slidably embedded in the inner side of the through groove. One end of the connecting plate is mounted with a slider, which is slidably embedded in the inner side of the slide groove. One side of the slider is mounted with a heating plate, and multiple sets of heating rods are evenly arranged on one side of the heating plate.

[0012] The adjustment assembly includes a spring post, a connecting block, a roller, and a transmission roller. The connecting block is slidably embedded in the inner side of both the first and second connecting grooves. A spring post is provided between the connecting block and the upper end of the inner side of the first connecting groove, and a spring post is provided between the connecting block and the lower end of the inner side of the second connecting groove. A roller is rotatably provided at one end of the connecting block, and a transmission roller is rotatably provided at one end of the groove.

[0013] Furthermore, a handle is provided at the outer end of the lead screw, a slide bar is vertically installed on the inner side of the slide groove, and a slider is slidably disposed on the outer side of the slide bar.

[0014] Furthermore, a positioning groove is provided on the inner side of the roller, and a positioning block is slidably arranged inside the positioning groove. A fixing ring is provided at one end of the positioning block, and the fixing ring is slidably arranged on the outer side of the roller.

[0015] Furthermore, a fixing plate is provided at one end of the positioning block, and a threaded post is provided through the thread on the inner side of the fixing plate. Multiple sets of threaded holes are evenly opened on the inner side of the positioning groove. The threaded post is screwed into the inner side of the threaded hole, and the blister sheet body fits against the outer side of the roller.

[0016] Compared with the prior art, the beneficial effects of this utility model include:

[0017] 1. In order to dry blister sheets of different thicknesses, the operator turns the handle, which moves the threaded plate through the screw. This, in turn, moves the upper and lower heating plates simultaneously through two sets of cranks, thereby adjusting the distance between the heating rod and the blister sheet. This ensures that blister sheets of different specifications can be dried evenly, effectively preventing uneven drying of the blister sheets.

[0018] 2. When the thermoformed sheet needs to be dried, the operator first passes the sheet through the bottom and top of the two sets of rollers and the bottom of the drive roller. When the sheet is taut, the spring force of the spring column drives the two sets of rollers to apply pressure to the sheet simultaneously, thus keeping the sheet in a centered position. This ensures that the distance between the top and bottom sides of the sheet and the heating rod remains consistent. The two sets of fixing rings limit the direction of movement of the sheet, preventing it from deviating during the drying process. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of a thermoforming sheet drying device according to the present invention;

[0021] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0022] Figure 3 This is a schematic diagram of the workbench structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the adjustment component structure of this utility model;

[0024] Figure 5 This is a schematic diagram of the anti-deviation component structure of this utility model;

[0025] Figure 6 This is a schematic diagram of the fixing ring structure of this utility model;

[0026] The diagram shows the following labels: 1. Workbench; 2. Support; 3. Vacuum-formed sheet body; 4. Groove; 5. Heating rod; 6. Heating plate; 7. Lead screw; 8. Connecting plate; 9. Threaded plate; 10. Handle; 11. Crank; 12. Through groove; 13. Slide rod; 14. Slide groove; 15. Roller; 16. First connecting groove; 17. Slider; 18. Threaded hole; 19. Fixing ring; 20. Positioning groove; 21. Spring column; 22. Connecting block; 23. Threaded column; 24. Positioning block; 25. Fixing plate; 26. Transmission roller; 27. Second connecting groove. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0028] like Figure 1 - Figure 6 As shown, this utility model provides a thermoforming sheet drying device, comprising:

[0029] The workbench 1 has a slot 4 through its inner side, and a first connecting slot 16 and a second connecting slot 27 are provided inside the slot 4.

[0030] Support 2 is installed in the middle of workbench 1. Two sets of sliding grooves 14 are symmetrically opened on the inner side of support 2, one of which has a through groove 12.

[0031] The thermoformed sheet body 3 is placed on one side of the top of the workbench 1;

[0032] The drying assembly includes a lead screw 7, a threaded plate 9, a connecting plate 8, and a heating plate 6. One end of the lead screw 7 is rotatably mounted on one side of the support 2. The outer side of the lead screw 7 is threaded with a threaded plate 9. Both ends of the threaded plate 9 are rotatably mounted with cranks 11. One end of the cranks 11 is rotatably mounted with a connecting plate 8. The connecting plate 8 is slidably embedded in the inner side of the through groove 12. One end of the connecting plate 8 is mounted with a slider 17. The slider 17 is slidably embedded in the inner side of the slide groove 14. One side of the slider 17 is mounted with a heating plate 6. Multiple sets of heating rods 5 are evenly arranged on one side of the heating plate 6.

[0033] The adjustment assembly includes a spring post 21, a connecting block 22, a roller 15, and a transmission roller 26. The connecting block 22 is slidably embedded in the inner side of both the first connecting groove 16 and the second connecting groove 27. The spring post 21 is provided between the upper end of the inner side of the connecting block 22 and the upper end of the inner side of the first connecting groove 16, and between the lower end of the inner side of the connecting block 22 and the lower end of the inner side of the second connecting groove 27. The roller 15 is rotatably mounted on one end of the connecting block 22, and the transmission roller 26 is rotatably mounted on one end of the inner side of the slot 4.

[0034] In the above scheme:

[0035] 1. Multiple sets of heating rods 5 evenly distributed on the heating plate 6 release heat after being powered on. By adjusting the distance between the heating plate 6 and the blister sheet, local overheating or insufficient drying can be avoided.

[0036] 2. The elasticity of the spring column 21 makes the roller 15 fit tightly against the blister sheet, ensuring that the sheet does not slip during transmission. At the same time, the transmission roller 26 guides the sheet to move at a uniform speed, providing a stable processing object for the drying component.

[0037] 3. The elastic force of the spring column 21 can apply a downward force to the connecting block 22 in the first connecting groove 16 and an upward force to the connecting block 22 in the second connecting groove 27. During the transmission of the blister sheet body 3, the cooperation of the two sets of rollers 15 can keep the blister sheet body 3 in a taut state and in a horizontally centered position inside the slot 4, so that the distance between the heating rods 5 on the two sets of heating plates 6 and the upper and lower sides of the blister sheet body 3 is equivalent.

[0038] In this embodiment, a handle 10 is provided at the outer end of the lead screw 7, a slide rod 13 is vertically installed on the inner side of the slide groove 14, and a slider 17 is slidably disposed on the outer side of the slide rod 13.

[0039] In the above scheme: when the slider 17 slides, it moves along the trajectory of the slide bar 13 to avoid the slider 17 from "wobbling left and right" in the slide groove 14, and to ensure that the heating plate 6 always moves horizontally, so as to achieve the function of "uniform adjustment of drying distance" and ensure that the upper and lower sides of the thermoformed sheet body 3 are heated evenly.

[0040] In this embodiment, a positioning groove 20 is provided on the inner side of the roller 15, and a positioning block 24 is slidably disposed on the inner side of the positioning groove 20. A fixing ring 19 is provided at one end of the positioning block 24, and the fixing ring 19 is slidably disposed on the outer side of the roller 15.

[0041] In the above scheme, the two sets of fixing rings 19 can form "side limit" according to the width of the blister sheet body 3, so as to avoid the blister sheet body 3 from shifting laterally during transmission and realize the transmission limit function of adapting to blister sheet bodies 3 with multiple widths.

[0042] In this embodiment, a fixing plate 25 is provided at one end of the positioning block 24, and a threaded post 23 is provided through the inner side of the fixing plate 25. Multiple sets of threaded holes 18 are evenly opened on the inner side of the positioning groove 20. The threaded post 23 is screwed into the inner side of the threaded hole 18, and the blister sheet body 3 is fitted to the outer side of the roller 15.

[0043] In the above scheme: after the fixing ring 19 is adjusted to the position that matches the width of the blister sheet body 3, the threaded post 23 is screwed into the corresponding threaded hole 18, which can lock the positioning block 24 and the roller 15, and prevent the fixing ring 19 from shifting during the transmission process.

[0044] In this embodiment, when drying different sizes of blister sheet bodies 3 is required, the operator first passes the blister sheet body 3 to be dried sequentially through the roller 15 located outside the first connecting groove 16, above the roller 15 located outside the second connecting groove 27, and below the transmission roller 26. Through the elastic force of the spring column 21, the two sets of rollers 15 can be driven to move upward and downward respectively, thereby applying force to both ends of the blister sheet body 3. This ensures that the blister sheet body 3 is positioned laterally centered within the slot 4, making the distance between the upper and lower sides of the blister sheet body 3 and the upper and lower heating plates 6 approximately equal. Then, the operator pulls the fixing ring 19, causing the positioning block 24 to slide inside the positioning groove 20. Then, the threaded column 23 is screwed into the threaded hole 18, thereby fixing the position of the fixing ring 19. The two sets of fixing rings 19 are then... The distance between the heating rod 5 and the width of the blister sheet body 3 is exactly the same, thus limiting the position of the blister sheet body 3 during the drying and conveying process. This prevents the blister sheet body 3 from shifting during conveying. Then, the operator turns the handle 10, which drives the lead screw 7 to rotate, thereby moving the threaded plate 9. This, in turn, drives the slider 17 to slide inside the slide groove 14 via the connecting plate 8. The slider 17 is limited by the sliding rod 13, thus stably driving the two sets of heating plates 6 to move. This allows for adjustment of the distance between the heating rod 5 and the blister sheet body 3, making it easier for the operator to adjust the position of the heating rod 5 according to the thickness of the blister sheet body 3. This results in a more effective drying operation for the blister sheet body 3, thus preventing uneven drying. The power supply and control of the heating plates and heating rods are existing technologies. Those skilled in the art can connect an external power supply box and PLC controller on-site according to the actual situation.

[0045] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0046] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A drying device for thermoformed sheets, characterized in that, include: The workbench (1) has a slot (4) through its inner side, and a first connecting slot (16) and a second connecting slot (27) are provided inside the slot (4). The bracket (2) is installed in the middle of the workbench (1). Two sets of sliding grooves (14) are symmetrically opened on the inner side of the bracket (2), and one set of sliding grooves (14) is through-groove (12). The thermoformed sheet body (3) is placed on one side of the top of the workbench (1); The drying assembly includes a lead screw (7), a threaded plate (9), a connecting plate (8), and a heating plate (6). One end of the lead screw (7) is rotatably disposed on one side of the support (2). The outer side of the lead screw (7) is threaded with a threaded plate (9). Both ends of the threaded plate (9) are rotatably disposed with cranks (11). One end of the cranks (11) is rotatably disposed with a connecting plate (8). The connecting plate (8) is slidably embedded in the inner side of the through groove (12). One end of the connecting plate (8) is disposed with a slider (17). The slider (17) is slidably embedded in the inner side of the slide groove (14). One side of the slider (17) is disposed with a heating plate (6). Multiple sets of heating rods (5) are evenly disposed on one side of the heating plate (6). The adjustment assembly includes a spring column (21), a connecting block (22), a roller (15), and a transmission roller (26). The connecting block (22) is slidably embedded in the inner side of the first connecting groove (16) and the second connecting groove (27). The spring column (21) is provided between the upper end of the inner side of the connecting block (22) and the lower end of the inner side of the connecting block (22) and the second connecting groove (27). The roller (15) is rotatably provided at one end of the connecting block (22), and the transmission roller (26) is rotatably provided at one end of the slot (4).

2. The thermoforming sheet drying device according to claim 1, characterized in that: The outer end of the lead screw (7) is provided with a handle (10), and a slide rod (13) is vertically installed on the inner side of the slide groove (14). The slider (17) is slidably disposed on the outside of the slide rod (13).

3. The thermoforming sheet drying device according to claim 2, characterized in that: The inner side of the roller (15) is provided with a positioning groove (20), and a positioning block (24) is slidably provided inside the positioning groove (20). A fixing ring (19) is provided at one end of the positioning block (24), and the fixing ring (19) is slidably provided on the outer side of the roller (15).

4. The thermoforming sheet drying device according to claim 3, characterized in that: One end of the positioning block (24) is provided with a fixing plate (25), and a threaded post (23) is provided through the thread on the inner side of the fixing plate (25). Multiple sets of threaded holes (18) are evenly opened on the inner side of the positioning groove (20). The threaded post (23) is screwed into the inner side of the threaded hole (18), and the blister sheet body (3) is fitted to the outer side of the roller (15).

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