Forming device for processing and producing bedding articles

By introducing a guide mechanism and an extrusion mechanism into the forming device for bedding processing and production, the problem of insufficient guidance before fabric forming is solved, the forming effect and efficiency are improved, and the fabric folds are avoided through the anti-pleasure mechanism, and efficient molding is achieved and drying.

CN119194784AInactive Publication Date: 2024-12-27NANTONG KAFENDI HOUSEHOLD TEXTILE CO LTD
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Patent Information

Application Number
CN202411643424.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-18
Publication Date
2024-12-27
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

The existing fabric forming devices lack the guiding function before extruding the fabric, resulting in inadequate molding and inefficiency.

Method used

A molding device for processing and production of bedding products is designed, including a guide mechanism, an extrusion mechanism and an anti-pleasure mechanism. The fabric is positioned and extruded through guide rollers and extrusion rollers to prevent wrinkles and dry them after forming. deal with.

Benefits of technology

The extrusion and efficiency of the fabric is improved, and the fabric is removed and wrinkled during the molding process is avoided, and the fabric is dried through a drying box.

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Abstract

The invention relates to the technical field of bedding article processing, and discloses a forming device for bedding article processing and production, which comprises a mounting plate, a guide mechanism is arranged on the left side of the top of the mounting plate, an extrusion mechanism is arranged on the surface of the guide mechanism, and an anti-wrinkle mechanism is arranged in the middle of the top of the mounting plate. And a drying box is arranged on the right side of the anti-wrinkle mechanism. According to the forming device for bedclothes processing and production, the guide rollers at the bottom can be positioned through the arranged guide mechanism, bed sheet cloth can be positioned again, the purpose of guiding the bed sheet cloth can be achieved through the two arranged guide rollers, extrusion forming of the bed sheet cloth in the later period is facilitated, and the production efficiency is improved. The extrusion forming effect on the bed sheet cloth is improved to a certain degree, under the elastic potential energy of second springs, the guide rollers on the two sides can be driven to move in the direction close to each other, and the phenomenon that the bed sheet cloth falls off from the position between the guide rollers on the two sides can be avoided.
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Description

Technical Field

[0001] The invention relates to the technical field of bedding processing, and in particular to a forming device for bedding processing and production. Background Art

[0002] Bedding refers to items placed on the bed for people to use when sleeping, including quilts, quilt covers, sheets, bedspreads, fitted sheets, pillowcases, pillow cores, blankets, mats and mosquito nets. The textile industry can be divided into three industries according to its end use, namely, clothing textiles, industrial textiles and decorative textiles. The decorative textiles industry is generally called home textiles, that is, the household textiles industry. The bedding industry is one of the sub-industries of home textiles.

[0003] The patent network announcement number CN 209443233 U discloses a cloth forming device, including a machine body and a conveyor belt, the middle top of the machine body is connected with a hot pressing structure, and a limit mechanism is installed on the rear end top of the machine body, the conveyor belt runs through the inner middle of the machine body, and a bracket is welded to the front end of the machine body, and a storage mechanism is fixed on the top of the bracket. The cloth forming device is provided with a hot pressing structure, and the interior of the hot pressing structure includes a base, a slider, a slide rail, an aeration chamber, a steam connecting pipe, a steel pipe, an aeration head, a first pressing roller and a hydraulic rod. When the user needs to perform hot pressing forming, the user can open the steam valve, and the steam flows from the steam connecting pipe into the steel pipe in the form of pressure, and is sprayed from the aeration head and sprayed onto the surface of the cloth to heat the cloth. At the same time, the cloth flows through the conveyor belt and fits with the first pressing roller, and the first pressing roller forms and flattens the cloth.

[0004] The applicant believes that the following disadvantages exist: the cloth forming device does not have the function of guiding the cloth before extrusion molding, which makes it inconvenient to extrude the cloth later, reduces the effect and efficiency of extrusion molding of the cloth, and has defects. Summary of the invention

[0005] The object of the present invention is to provide a molding device for processing and producing bedding products to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a forming device for bedding processing and production, comprising a mounting plate, a guide mechanism is arranged on the left side of the top of the mounting plate, an extrusion mechanism is arranged on the surface of the guide mechanism, an anti-wrinkle mechanism is arranged in the middle of the top of the mounting plate, a drying box is arranged on the right side of the anti-wrinkle mechanism, and the drying box is fixedly connected to the right side of the top of the mounting plate.

[0007] The guide mechanism includes a support frame, which is fixedly connected to the left side of the top of the mounting plate, a guide roller is arranged in the support frame, a rotating part is fixedly connected to the front side of the guide roller, a mounting shell is fixedly connected to the surface of the rotating part, both sides of the mounting shell are slidably connected with clamping rods, a first fixed plate is slidably connected to the surface of the clamping rod, the first fixed plate is fixedly connected to the mounting shell, a first spring is sleeved on the surface of the clamping rod, and the first spring is arranged in the mounting shell. Two guide rollers are arranged, and the two guide rollers are symmetrically arranged at the top and bottom of the support frame.

[0008] Preferably, the number of the clamping rods is two, and the two clamping rods are symmetrically arranged. A second fixed plate is fixedly connected to the surface of the support frame. A clamping slot is provided in the first fixed plate, and the clamping rod is clamped in the clamping slot. By clamping the clamping rod into the corresponding clamping slot, the guide roller at the bottom can be positioned.

[0009] Preferably, a fixing ring is provided on the right side of the first spring, and the fixing ring is fixedly connected to the surface of the clamping rod, and can drive the clamping rods on both sides to move in directions away from each other under the elastic potential energy of the first springs on both sides.

[0010] Preferably, a sliding plate is fixedly connected to one side of the clamping rod, sliding grooves are provided on both sides of the mounting shell, the sliding plate is slidably connected in the sliding grooves, a handle is fixedly connected to the surface of the sliding plate, and the handle is symmetrically arranged on the front side of the rotating part. The stability of the clamping rod during movement can be ensured by the arranged sliding plate.

[0011] Preferably, the extrusion mechanism includes a second positioning plate, which is rotatably connected to both sides of the guide roller surface, a horizontal plate is fixedly connected to the surface of the second positioning plate, and vertical plates are fixedly connected to both sides of the surface of the horizontal plate. The guide roller can be supported by the second positioning plate.

[0012] Preferably, a support rod is fixedly connected to the bottom of the vertical plate, the support rod is fixedly connected to the surface of the support frame, the surface of the support rod is slidably connected to a first positioning plate, the first positioning plate is fixedly connected to the surface of the second positioning plate, the two vertical plates are symmetrically arranged on both sides of the second positioning plate, the two vertical plates are symmetrically arranged, and the support rod can be limited by the arranged vertical plates.

[0013] Preferably, a second spring is sleeved on the surface of the support rod, and the second spring is arranged at the bottom of the first positioning plate. Under the elastic potential energy of the second spring itself, the guide rollers on both sides can be driven to move towards each other.

[0014] Preferably, the anti-wrinkle mechanism includes a support seat, which is fixedly connected to the middle of the top of the mounting plate, an arc-shaped groove is opened in the middle of the support seat, threaded rods are arranged on both sides of the arc-shaped groove, and two threaded rods are arranged. The surfaces of the two threaded rods are transmission-connected with a first pulley group, and the first pulley group is arranged on the top of the support seat. During the rotation of the threaded rod, the support seat can be driven to move up and down.

[0015] Preferably, a fixing piece is rotatably connected to the surface of the threaded rod, a fixing frame is fixedly connected to the surface of the fixing piece, the fixing frame is fixedly connected to the surface of the support seat, and the fixing frame is arranged on both sides of the threaded rod. The threaded rod can be supported by the setting of the fixing piece and the fixing frame to prevent the threaded rod from tilting during rotation.

[0016] Preferably, the bottom of the threaded rod is rotatably connected to a placement rack, and the placement rack is rotatably connected to an extrusion roller. The number of extrusion rollers is several, and the several extrusion rollers are evenly spaced in the placement rack. A placement plate is provided at the bottom of the extrusion roller, and the placement plate is fixedly connected to the top of the mounting plate. The top of the mounting plate is rotatably connected to a worm, and the worm is rotatably connected to the support frame. A worm wheel is meshed on the surface of the worm, and the worm wheel is fixedly connected to the surface of the guide roller. The worm and the surface of the threaded rod are transmission-connected with a second pulley set. When the extrusion roller passes through the bed sheet fabric, wrinkles on the bed sheet fabric can be avoided while extrusion molding of the bed sheet fabric can be achieved.

[0017] Compared with the prior art, the present invention provides a molding device for bedding processing and production, which has the following beneficial effects: The forming device for bedding processing and production can position the guide roller at the bottom through the provided guide mechanism, so that it can re-position the bed sheet fabric. The two provided guide rollers can achieve the purpose of guiding the bed sheet fabric, which is convenient for the subsequent extrusion molding of the bed sheet fabric and improves the effect of the extrusion molding of the bed sheet fabric to a certain extent.

[0018] The forming device for bedding processing and production can drive the guide rollers on both sides to move towards each other through the extrusion mechanism set up under the elastic potential energy of the second spring. At this time, the guide rollers can extrude and position the bed sheet fabric, thereby preventing the bed sheet fabric from falling off between the guide rollers on both sides.

[0019] The forming device for processing and producing bedding can prevent wrinkles on the bed sheet fabric by means of an anti-wrinkle mechanism when the squeezing roller passes through the bed sheet fabric, and can also achieve extrusion molding of the bed sheet fabric. Finally, the bed sheet fabric is placed in a drying box, and the drying box can achieve the purpose of drying the bed sheet fabric. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative labor: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic cross-sectional view of the overall structure of the present invention; Figure 3 It is a schematic diagram of the cooperation between the guide mechanism and the extrusion mechanism of the present invention; Figure 4 It is a schematic diagram of the guide mechanism of the present invention; Figure 5 for Figure 4 A schematic diagram of the structure enlargement in the middle; Figure 6 It is a schematic diagram of the extrusion mechanism of the present invention; Figure 7 This is a schematic diagram of the anti-wrinkle mechanism of the present invention; Figure 8 It is a cross-sectional schematic diagram of the anti-wrinkle mechanism of the present invention.

[0021] In the figure: 1. mounting plate; 2. guiding mechanism; 21. supporting frame; 22. rotating member; 23. guiding roller; 24. sliding groove; 25. handle; 26. first spring; 27. first fixing plate; 28. second fixing plate; 29. ​​clamping rod; 201. fixing ring; 202. mounting shell; 203. sliding plate; 3. squeezing mechanism; 31. vertical plate; 32. supporting rod; 33. horizontal plate; 34. first positioning plate; 35. second positioning plate; 36. second spring; 4. anti-wrinkle mechanism; 41. supporting seat; 42. fixing frame; 43. worm; 44. worm wheel; 45. squeezing roller; 46. placing frame; 47. placing plate; 48. fixing member; 49. threaded rod; 5. drying box. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] The present invention provides a technical solution: Example

[0024] Combination Figure 1-2 to Figure 3-5 A forming device for bedding processing and production includes a mounting plate 1, a guide mechanism 2 is arranged on the left side of the top of the mounting plate 1, an extrusion mechanism 3 is arranged on the surface of the guide mechanism 2, an anti-wrinkle mechanism 4 is arranged in the middle of the top of the mounting plate 1, a drying box 5 is arranged on the right side of the anti-wrinkle mechanism 4, and the drying box 5 is fixedly connected to the right side of the top of the mounting plate 1.

[0025] The guide mechanism 2 includes a support frame 21, which is fixedly connected to the left side of the top of the mounting plate 1. A guide roller 23 is arranged in the support frame 21. A rotating member 22 is fixedly connected to the front side of the guide roller 23. A mounting shell 202 is fixedly connected to the surface of the rotating member 22. A clamping rod 29 is slidably connected to both sides of the mounting shell 202. A first fixed plate 27 is slidably connected to the surface of the clamping rod 29. The first fixed plate 27 is fixedly connected to the mounting shell 202. A first spring 26 is sleeved on the surface of the clamping rod 29. The first spring 26 is arranged in the mounting shell 202. Two guide rollers 23 are arranged, and the two guide rollers 23 are symmetrically arranged at the top and bottom of the support frame 21.

[0026] Furthermore, two clamping rods 29 are provided, and the two clamping rods 29 are symmetrically arranged. A second fixed plate 28 is fixedly connected to the surface of the support frame 21. A clamping groove is opened in the first fixed plate 27, and the clamping rod 29 is clamped in the clamping groove. By clamping the clamping rod 29 into the corresponding clamping groove, the guide roller 23 at the bottom can be positioned.

[0027] Furthermore, a fixing ring 201 is provided on the right side of the first spring 26 , and the fixing ring 201 is fixedly connected to the surface of the clamping rod 29 , and can drive the clamping rods 29 on both sides to move in directions away from each other under the elastic potential energy of the first springs 26 on both sides.

[0028] Furthermore, a sliding plate 203 is fixedly connected to one side of the clamping rod 29, and sliding grooves 24 are opened on both sides of the mounting shell 202. The sliding plate 203 is slidably connected in the sliding grooves 24. A handle 25 is fixedly connected to the surface of the sliding plate 203. The handle 25 is symmetrically arranged on the front side of the rotating member 22. By setting the sliding plate 203, the stability of the clamping rod 29 during the movement can be ensured. Example

[0029] See also Figure 6 On the basis of the first embodiment, the extrusion mechanism 3 further includes a second positioning plate 35, the second positioning plates 35 are rotatably connected to both sides of the surface of the guide roller 23, the surface of the second positioning plate 35 is fixedly connected with a horizontal plate 33, and both sides of the surface of the horizontal plate 33 are fixedly connected with a vertical plate 31, and the guide roller 23 can be supported by the second positioning plate 35.

[0030] Furthermore, a support rod 32 is fixedly connected to the bottom of the vertical plate 31, and the support rod 32 is fixedly connected to the surface of the support frame 21. A first positioning plate 34 is slidably connected to the surface of the support rod 32, and the first positioning plate 34 is fixedly connected to the surface of the second positioning plate 35. The two vertical plates 31 are symmetrically arranged on both sides of the second positioning plate 35. The two vertical plates 31 are symmetrically arranged, and the support rod 32 can be limited by the arranged vertical plates 31.

[0031] Furthermore, a second spring 36 is sleeved on the surface of the support rod 32 , and the second spring 36 is arranged at the bottom of the first positioning plate 34 . Under the elastic potential energy of the second spring 36 , the guide rollers 23 on both sides can be driven to move towards each other. Example

[0032] See also Figure 7-8 On the basis of the first and second embodiments, the anti-wrinkle mechanism 4 further includes a support seat 41, the support seat 41 is fixedly connected to the middle of the top of the mounting plate 1, an arc groove is opened in the middle of the support seat 41, threaded rods 49 are arranged on both sides of the arc groove, and the number of threaded rods 49 is two. The surfaces of the two threaded rods 49 are transmission-connected with a first pulley set, and the first pulley set is arranged on the top of the support seat 41. During the rotation of the threaded rod 49, the support seat 41 can be driven to move up and down.

[0033] Furthermore, a fixing part 48 is rotatably connected to the surface of the threaded rod 49, a fixing frame 42 is fixedly connected to the surface of the fixing part 48, the fixing frame 42 is fixedly connected to the surface of the support seat 41, and the fixing frame 42 is arranged on both sides of the threaded rod 49. The threaded rod 49 can be supported by the setting of the fixing part 48 and the fixing frame 42 to prevent the threaded rod 49 from tilting during the rotation process.

[0034] Furthermore, a placement rack 46 is rotatably connected to the bottom of the threaded rod 49, and an extrusion roller 45 is rotatably connected in the placement rack 46. A plurality of extrusion rollers 45 are arranged, and the plurality of extrusion rollers 45 are evenly spaced and distributed in the placement rack 46. A placement plate 47 is arranged at the bottom of the extrusion roller 45, and the placement plate 47 is fixedly connected to the top of the mounting plate 1. A worm 43 is rotatably connected to the top of the mounting plate 1, and the worm 43 is rotatably connected to the support frame 21. A worm wheel 44 is meshed on the surface of the worm 43, and the worm wheel 44 is fixedly connected to the surface of the guide roller 23. A second pulley group is transmission-connected to the surface of the worm 43 and the threaded rod 49. When the extrusion roller 45 passes through the bed sheet fabric, wrinkles on the bed sheet fabric can be avoided while extrusion molding of the bed sheet fabric can be achieved.

[0035] In actual operation, when the device is used, firstly, the guide roller 23 at the bottom is pressed downward, and then the first positioning plate 34 moves downward on the surface of the support rod 32 and squeezes the second spring 36. Then, the bed sheet is placed between the guide rollers 23 on both sides and the guide rollers 23 are loosened. Under the elastic potential energy of the second spring 36, the guide roller 23 at the bottom can be driven to move upward. At this time, the guide roller 23 can squeeze and position the bed sheet, and can prevent the bed sheet from falling off between the guide rollers 23 on both sides. Then, the bed sheet is moved to the opposite sides. The handles 25 on both sides are pulled in the direction of approaching each other. At this time, the clamping rods 29 on both sides move in the direction of approaching each other inside the mounting shell 202, and the first spring 26 is in a compressed state. At this time, the rotating member 22 can be rotated, and the rotating member 22 can drive the guide roller 23 at the bottom to rotate. During the rotation of the guide roller 23, the bed sheet fabric can be driven to move. When the bed sheet fabric is at the bottom of the squeezing roller 45, the rotating member 22 can be rotated again to make the mounting shell 202 and the second fixing plate 28 be on the same horizontal plane. Then, by loosening the handles 25, the first springs 26 on both sides are released. Under the elastic potential energy of the spring 26 itself, the clamping rods 29 on both sides can be driven to move in directions away from each other and clamped into the corresponding clamping grooves, so as to position the guide roller 23 at the bottom so that it can re-position the bed sheet fabric. The two guide rollers 23 are provided to guide the bed sheet fabric, which is convenient for the subsequent extrusion molding of the bed sheet fabric and improves the extrusion molding effect of the bed sheet fabric to a certain extent. When the bed sheet fabric is at the bottom of the extrusion roller 45, one end of the bed sheet fabric can be pulled, and at this time, the top guide roller 23 rotates and drives The movable worm 43 and the worm wheel 44 rotate synchronously, and under the linkage effect formed by the second pulley group, one of the threaded rods 49 can be driven to rotate synchronously, and under the linkage effect formed by the first pulley group, the threaded rods 49 on both sides can be driven to rotate synchronously, and the squeezing roller 45 can be driven to move downward. At this time, the squeezing roller 45 can squeeze the bed sheet fabric. When the squeezing roller 45 passes through the bed sheet fabric, it can avoid wrinkles on the bed sheet fabric and realize extrusion molding of the bed sheet fabric. Finally, the bed sheet fabric is placed in the drying box 5, and the drying box 5 can achieve the purpose of drying the bed sheet fabric.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A molding device for processing and producing bedding, comprising a mounting plate (1), characterized in that: A guide mechanism (2) is provided on the left side of the top of the mounting plate (1), a pressing mechanism (3) is provided on the surface of the guide mechanism (2), an anti-wrinkle mechanism (4) is provided in the middle of the top of the mounting plate (1), a drying box (5) is provided on the right side of the anti-wrinkle mechanism (4), and the drying box (5) is fixedly connected to the right side of the top of the mounting plate (1); The guide mechanism (2) comprises a support frame (21), the support frame (21) being fixedly connected to the left side of the top of the mounting plate (1), a guide roller (23) being arranged in the support frame (21), a rotating member (22) being fixedly connected to the front side of the guide roller (23), a mounting shell (202) being fixedly connected to the surface of the rotating member (22), a clamping rod (29) being slidably connected to both sides of the mounting shell (202), a first fixing plate (27) being slidably connected to the surface of the clamping rod (29), the first fixing plate (27) being fixedly connected to the mounting shell (202), a first spring (26) being sleeved on the surface of the clamping rod (29), the first spring (26) being arranged in the mounting shell (202), two guide rollers (23) being arranged, and the two guide rollers (23) being symmetrically arranged at the top and bottom of the support frame (21).

2. A molding device for bedding production according to claim 1, characterized in that: The number of the clamping rods (29) is two, and the two clamping rods (29) are symmetrically arranged. A second fixing plate (28) is fixedly connected to the surface of the support frame (21), and a clamping groove is provided in the first fixing plate (27), and the clamping rod (29) is clamped in the clamping groove.

3. A molding device for bedding production according to claim 1, characterized in that: A fixing ring (201) is provided on the right side of the first spring (26), and the fixing ring (201) is fixedly connected to the surface of the clamping rod (29).

4. A molding device for bedding production according to claim 1, characterized in that: A sliding plate (203) is fixedly connected to one side of the clamping rod (29), sliding grooves (24) are provided on both sides of the mounting shell (202), the sliding plate (203) is slidably connected in the sliding grooves (24), and a handle (25) is fixedly connected to the surface of the sliding plate (203), and the handle (25) is symmetrically arranged on the front side of the rotating member (22).

5. The molding device for bedding production according to claim 1, characterized in that: The extrusion mechanism (3) comprises a second positioning plate (35), the second positioning plates (35) are rotatably connected to both sides of the surface of the guide roller (23), the surface of the second positioning plate (35) is fixedly connected to a horizontal plate (33), and the surface of the horizontal plate (33) is fixedly connected to vertical plates (31) on both sides.

6. A molding device for processing and producing bedding according to claim 5, characterized in that: A support rod (32) is fixedly connected to the bottom of the vertical plate (31), the support rod (32) is fixedly connected to the surface of the support frame (21), a first positioning plate (34) is slidably connected to the surface of the support rod (32), the first positioning plate (34) is fixedly connected to the surface of the second positioning plate (35), the two vertical plates (31) are symmetrically arranged on both sides of the second positioning plate (35), and the two vertical plates (31) are symmetrically arranged.

7. A molding device for bedding production according to claim 6, characterized in that: A second spring (36) is sleeved on the surface of the support rod (32), and the second spring (36) is arranged at the bottom of the first positioning plate (34).

8. The molding device for bedding production according to claim 1, characterized in that: The anti-wrinkle mechanism (4) comprises a support seat (41), the support seat (41) is fixedly connected to the middle of the top of the mounting plate (1), an arc-shaped groove is provided in the middle of the support seat (41), threaded rods (49) are provided on both sides of the arc-shaped groove, and the number of the threaded rods (49) is two, and the surfaces of the two threaded rods (49) are transmission-connected to a first pulley group, and the first pulley group is provided on the top of the support seat (41).

9. A molding device for processing and producing bedding according to claim 8, characterized in that: The surface of the threaded rod (49) is rotatably connected to a fixing member (48), the surface of the fixing member (48) is fixedly connected to a fixing frame (42), the fixing frame (42) is fixedly connected to the surface of the support seat (41), and the fixing frame (42) is arranged on both sides of the threaded rod (49).

10. A molding device for bedding production according to claim 8, characterized in that: The bottoms of the two threaded rods (49) are rotatably connected to a placement frame (46), and the placement frame (46) is rotatably connected to a squeezing roller (45). The number of squeezing rollers (45) is multiple, and the multiple squeezing rollers (45) are evenly spaced and distributed in the placement frame (46). A placement plate (47) is provided at the bottom of the squeezing rollers (45), and the placement plate (47) is fixedly connected to the top of the mounting plate (1). The top of the mounting plate (1) is rotatably connected to a worm (43), and the worm (43) is rotatably connected to the support frame (21). The surface of the worm (43) is meshed with a worm wheel (44), and the worm wheel (44) is fixedly connected to the surface of the guide roller (23). The worm (43) and the surface of the threaded rod (49) are transmission-connected to a second pulley.