Foam material repairing device

Abstract

The utility model discloses a foam material repairing device, which belongs to the technical field of foam material processing equipment and comprises an unwinding frame, a sheet storage frame, a heating frame and a winding frame which are sequentially arranged along a sheet conveying direction. A gravity roller for adjusting the tension of the sheets is arranged on the sheet storage rack; two heating rows are arranged on the heating frame; the traction frame comprises two traction rollers which are arranged in pairs; and the unwinding speed of the unwinding frame and the winding speed of the winding frame are respectively adjustable. According to the foam material repairing device, the front face and the back face of a sheet can be heated through the two heating rows on the heating frame, then the surface of the sheet is rolled through the traction roller, the sheet in the heating state has the reshaping capacity, then bumping, scratches, mosquitoes or water stains and the like on the surface of the sheet can be removed, and the repairing efficiency of the foam material is improved. And secondly, by setting the distance between the two traction rollers on the traction frame, rolling of the sheet with the thickness exceeding the standard can be achieved, the repairing procedure of the polyolefin foaming material with flaws and with thickness rebound is achieved, and sheet waste is reduced.

Description

Technical Field

[0001] This utility model belongs to the technical field of foam material processing equipment, and specifically relates to a foam material repair device. Background Technology

[0002] Polyolefin foam sheets are a type of polymer material made primarily from olefin polymers such as polyethylene and polypropylene. Through a foaming process, a large number of independent microcellular cells are created and uniformly dispersed within the solid material. Polyolefin foam sheets are lightweight, possess good softness and resilience, and exhibit excellent mechanical and chemical properties, making them widely applicable in packaging, building decoration materials, and automotive interiors.

[0003] During the production of polyolefin foam sheets, some surface defects are unavoidable, such as bumps during inter-process transfer, scratches from foreign objects, insect stains, or watermarks. These surface defects affect the customer's product experience and, in severe cases, can lead to product defects and scrapping, causing significant production losses. Secondly, besides the waste of polyolefin foam sheets caused by external factors, the polyolefin foam sheets themselves, as finished products, experience varying degrees of thickness rebound after being rolled and stored. When the thickness rebounds to a certain standard, it causes the product thickness to exceed the limit, which also leads to product scrapping. Currently, there are no effective means to prevent surface defects and thickness rebound during the production process, resulting in substantial waste of polyolefin foam sheets. Utility Model Content

[0004] In response to one or more of the above-mentioned defects or improvement needs of the prior art, this utility model provides a foam material repair device to solve the problem of waste caused by the inability to repair existing polyolefin foam materials with defects and thickness rebound.

[0005] To achieve the above objectives, this utility model provides a foam material repair device, which includes:

[0006] The unwinding rack, the sheet storage rack, the heating rack, the traction rack, and the winding rack are arranged sequentially along the sheet conveying direction;

[0007] The sheet storage rack is equipped with a gravity roller, which is used to adjust the sheet tension passing through the heating rack and the traction rack;

[0008] The heating frame includes two heating rows arranged vertically and aligned, which can heat the front and back sides of the sheet respectively.

[0009] The traction frame includes two pairs of traction rollers, with a gap between the two traction rollers for the sheet to pass through, in order to roll and process the sheet heated by the heating frame.

[0010] The unwinding rate of the unwinding frame and the winding rate of the winding frame are both adjustable.

[0011] As a further improvement of this utility model, the tablet storage rack includes a first rotating roller and a second rotating roller, the first rotating roller and the second rotating roller are located on the same horizontal plane, the gravity roller is disposed between the first rotating roller and the second rotating roller, and the first rotating roller, the gravity roller and the second rotating roller form a V-shaped structure, and the gravity roller is adjustable in height along the vertical direction.

[0012] As a further improvement of this utility model, the gravity roller is provided with a first tension sensing contact and a second tension sensing contact on both sides in the vertical direction.

[0013] The unwinding frame is equipped with a drive motor, which is used to control the unwinding tension of the unwinding frame. The drive motor is communicatively connected to the first tension sensing contact and the second tension sensing contact.

[0014] As a further improvement of this utility model, an induction switch is also provided below the gravity roller. The induction switch is located below the second tension sensing contact and is used to issue an alarm when it contacts the gravity roller.

[0015] As a further improvement of this utility model, the heating frame is also provided with a first adjusting cylinder and a second adjusting cylinder, the first adjusting cylinder and the second adjusting cylinder being respectively connected to the two heating rows, so that the two heating frames are adjustable in the vertical direction.

[0016] As a further improvement of this utility model, the heating frame includes a frame-shaped frame body, the first adjusting cylinder and the second adjusting cylinder are respectively connected to the vertical ends of the frame body, and the output shafts of the first adjusting cylinder and the second adjusting cylinder are respectively connected to the two heating elements.

[0017] As a further improvement of this utility model, the traction frame includes a first traction roller and a second traction roller. The first traction roller is connected to a third adjusting cylinder, and the vertical height of the first traction roller is adjustable. The second traction roller is connected to a traction motor via a transmission belt.

[0018] As a further improvement of this utility model, it also includes a frame, wherein the storage rack, the heating rack and the traction rack are all mounted on the frame.

[0019] As a further improvement of this utility model, the unwinding frame controls the unwinding tension through a magnetic powder motor, and the winding frame controls the winding tension through a torque motor.

[0020] The aforementioned improved technical features can be combined with each other as long as they do not conflict with each other.

[0021] In summary, the beneficial effects of the above-described technical solutions conceived by this utility model compared with the prior art include:

[0022] (1) The foam material repair device of this utility model is equipped with a heating frame. The two heating rows on the heating frame can heat the front and back sides of the sheet respectively, so that the sheet is in a deformable repair state. Then, the traction roller on the traction frame rolls the surface of the sheet. The heated sheet has the ability to be reshaped, and thus the bumps, scratches, insects or water stains on the surface of the sheet can be removed. Secondly, by setting the distance between the two traction rollers on the traction frame, the sheet with excessive thickness can be rolled to adjust the sheet to the set thickness, realizing the repair process of polyolefin foam material with defects and thickness rebound, reducing sheet waste. Secondly, in the process of sheet heating and repair, according to the repair needs of the sheet, it needs to be under different tensions to achieve thinning or mark removal. Therefore, a gravity roller is set to monitor the tension of the sheet and adjust the tension of the unwinding frame or the rewinding frame accordingly to repair the sheet to the required size.

[0023] (2) The foam material repair device of this utility model is equipped with a gravity roller. The tension of the sheet is displayed by the up and down movement of the gravity roller. The position of the gravity roller is sensed by the first tension sensing contact and the second tension sensing contact, which facilitates the unwinding frame to adjust the sheet tension in real time and avoids the sheet tension being too large or too small, which would result in the sheet being unqualified for repair. Secondly, by setting a sensor switch, the broken sheet condition is sensed, prompting the operator to adjust the repair device in time to avoid the sheet falling into the heating element after breaking and causing the sheet to burn.

[0024] (3) The foam material repair device of this utility model has two separately adjustable heating bars, which can repair water stains or mosquito marks on one side of the sheet, or heat both sides of the sheet at the same time as needed to repair the thickness rebound of the sheet after it is placed. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the foam material repair device in this utility model embodiment;

[0026] Figure 2 This is a side view of the chip holder in an embodiment of the present invention;

[0027] Figure 3 This is a side view of the heating frame in an embodiment of the present invention;

[0028] Figure 4This is a side view of the traction frame in an embodiment of the present invention;

[0029] Figure 5 This is a schematic diagram of the foam material repair process in an embodiment of this utility model.

[0030] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically:

[0031] 1. Unwinding frame; 2. Sheet storage frame; 3. Heating frame; 4. Traction frame; 5. Rewinding frame; 6. Gravity roller; 7. Heating row; 8. First rotating roller; 9. Second rotating roller; 10. First tension sensing contact; 11. Second tension sensing contact; 12. Inductive switch; 13. First adjusting cylinder; 14. Second adjusting cylinder; 15. First traction roller; 16. Second traction roller; 17. Third adjusting cylinder; 18. Drive belt; 19. Traction motor; 20. Frame; 21. Magnetic powder motor; 22. Torque motor. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model. Furthermore, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0033] In the description of this utility model, it should be understood that, unless otherwise stated, the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] Furthermore, unless otherwise stated, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0035] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0037] Example:

[0038] Please see Figures 1-5 The foam material repair device in a preferred embodiment of this utility model includes an unwinding frame 1, a storage frame 2, a heating frame 3, a traction frame 4, and a winding frame 5 arranged sequentially along the sheet conveying direction. The storage frame 2 is equipped with a gravity roller 6, which is used to adjust the sheet tension passing through the heating frame 3 and the traction frame 4. The heating frame 3 includes two heating rows 7 arranged vertically opposite each other, which can heat both sides of the sheet respectively. Simultaneously, the traction frame 4 includes two paired traction rollers with a gap between them for the sheet to pass through, used for rolling and pressing the sheet heated by the heating frame 3. Furthermore, the unwinding rate of the unwinding frame 1 and the winding rate of the winding frame 5 are adjustable.

[0039] The foam material repair device in this application uses a heating frame 3 with two heating elements 7 to heat both sides of the sheet, putting it in a deformable repairable state. Then, traction rollers on a traction frame 4 roll the sheet surface. The heated sheet has the ability to be reshaped, thus removing dents, scratches, insect marks, or water stains. Furthermore, by adjusting the spacing between the two traction rollers on the traction frame 4, sheets with excessive thickness can be rolled to adjust to a set thickness, enabling the repair of defective polyolefin foam materials that have experienced thickness rebound, reducing sheet waste. Secondly, during the sheet heating and repair process, depending on the repair requirements, the sheet needs to be under different tensions to achieve thinning or mark removal. Therefore, a gravity roller 6 is used to monitor the sheet tension and adjust the tension of the unwinding frame 1 or the rewinding frame 5 accordingly to repair the sheet to the required size.

[0040] Further, as an optional embodiment of this utility model, the sheet storage rack 2 in this application includes a first rotating roller 8 and a second rotating roller 9, which are located on the same horizontal plane. A gravity roller 6 is disposed between the first rotating roller 8 and the second rotating roller 9, and the first rotating roller 8, gravity roller 6, and second rotating roller 9 form a V-shaped structure. The gravity roller 6 is vertically adjustable. The first rotating roller 8, the second rotating roller 9, and the gravity roller 6 form a V-shaped structure. The sheet material released from the unwinding rack 1 passes through the first rotating roller 8, the gravity roller 6, and the second rotating roller 9 in sequence. The gravity roller 6 overlaps the sheet material. When the winding speed is greater than the unwinding speed, the sheet material is taut, and the gravity roller 6 is lifted by the sheet material. When the winding speed is less than the unwinding speed, the sheet material on the sheet storage rack 2 increases, the sheet material relaxes, and the gravity roller 6 presses down on the sheet material. The tension of the sheet material on the repair device is indicated by the rise or fall of the gravity roller 6. The foam material repair device in this application needs to adjust the tension of the sheet in a timely manner according to the defects of the sheet itself. Therefore, the gravity roller 6 is required to monitor the tension of the sheet in real time.

[0041] Furthermore, as an optional embodiment of this utility model, the gravity roller 6 in this application is provided with a first tension sensing contact 10 and a second tension sensing contact 11 on both sides in the vertical direction; a drive motor is provided on the unwinding frame 1, the drive motor is used to control the unwinding tension of the unwinding frame 1, and the drive motor is communicatively connected to the first tension sensing contact 10 and the second tension sensing contact 11 respectively. As mentioned above, this application requires the gravity roller 6 to monitor the sheet tension in real time. Since a heating frame 3 is set behind it, the heating frame 3 will cause secondary plasticity of the sheet. Excessive or insufficient tension will cause the sheet to be too thin or not repaired to the standard thickness under the traction of the traction frame 4, resulting in unqualified sheet repair. Therefore, it is necessary to set a first tension sensing point and a second tension sensing point for the gravity roller 6, and limit the endpoint value of the gravity roller 6 through the two tension sensing points to constrain the sheet tension. When the gravity roller 6 rises or falls to the position of the two tension sensing points, the tension of the unwinding frame 1 needs to be adjusted to ensure that the sheet tension is within the set requirement range.

[0042] Furthermore, as an optional embodiment of this utility model, an induction switch 12 is also provided below the gravity roller 6. The induction switch 12 is located below the second tension sensing contact 11. The induction switch 12 is used to issue an alarm when it contacts the gravity roller 6. In addition to sensing the tension of the sheet through the first tension sensing point and the second tension sensing point under normal conditions, when the sheet breaks, the gravity roller 6 falls downward under the action of gravity, thereby triggering the induction switch 12. The induction switch 12 can issue an alarm accordingly to remind the operator that the sheet has broken, so that the operator can adjust the sheet repair process in time and avoid the sheet breaking and coming into contact with the heating element 7, which could cause a fire.

[0043] Furthermore, as an optional embodiment of this utility model, the heating frame 3 in this application is also provided with a first adjusting cylinder 13 and a second adjusting cylinder 14. The first adjusting cylinder 13 and the second adjusting cylinder 14 are respectively connected to two heating elements 7, so that the two heating elements 7 are adjustable vertically. When the sheet becomes too thick due to thickness rebound, the positions of the two heating elements 7 can be adjusted by the two adjusting cylinders to heat both sides of the sheet evenly. Then, the sheet thickness is adjusted to the standard thickness by squeezing and pulling by the traction frame 4. When water stains or insect marks appear on one side of the sheet, the intact side of the sheet does not need to be heated and shaped. Therefore, the heating elements 7 on the defective side can be adjusted so that the heating elements 7 are closer to the sheet to complete the single-sided repair of the sheet.

[0044] Furthermore, as an optional embodiment of this utility model, the heating frame 3 specifically includes a frame-shaped body. A first adjusting cylinder 13 and a second adjusting cylinder 14 are respectively connected to the vertical ends of the frame, and the output shafts of the first adjusting cylinder 13 and the second adjusting cylinder 14 are respectively connected to two heating elements 7. The two heating elements 7 need to be electrically heated, and direct contact between the heating elements 7 and the repair device must be avoided to prevent burns to operators. Therefore, a frame-shaped structure is provided, with the first adjusting cylinder 13 and the second adjusting cylinder 14 mounted on the frame. The output shafts of the two adjusting cylinders extend and connect to the two heating elements 7, making the heating elements 7 suspended and reducing heat transfer from the heating elements 7 to the frame.

[0045] Furthermore, as an optional embodiment of this utility model, the traction frame 4 in this application includes a first traction roller 15 and a second traction roller 16. The first traction roller 15 is connected to a third adjusting cylinder 17, allowing the vertical height of the first traction roller 15 to be adjusted, thereby adjusting the roller gap between the first traction roller 15 and the second traction roller 16. The second traction roller 16 is connected to a traction motor 19 via a transmission belt 18, which rotates the second traction roller 16 to achieve the roller traction of the sheet material. When repairing sheets with different thickness requirements is needed, the roller gap on the traction frame 4 needs to be adjusted accordingly. Therefore, this application provides a third adjusting cylinder 17 for the first traction roller 15 to adjust the distance between the first traction roller 15 and the second traction roller 16, thereby adjusting the roller gap. Meanwhile, the tension required by the traction frame 4 varies depending on the defects of the sheet. When there are water stains or insect marks on the sheet surface, the tension of the traction frame 4 should be slightly greater than that of the unwinding frame 1. When the sheet thickness needs to be adjusted, the traction frame 4 needs to provide greater tension to thin the sheet. In this case, the rotation speed of the second traction roller 16 needs to be increased by the traction motor 19 to adjust the tension of the traction frame 4.

[0046] Furthermore, as an optional embodiment of this utility model, the foam material repair device in this application also includes a frame 20, on which the aforementioned foam storage rack 2, heating rack 3, and traction rack 4 are all mounted. To facilitate the overall design of the foam material repair device, this application correspondingly provides a frame 20, which integrates the foam storage rack 2, heating rack 3, and traction rack 4 into a single structure, facilitating the design and arrangement of each structure.

[0047] Furthermore, as an optional embodiment of this utility model, the unwinding frame 1 in this application controls the unwinding tension via a magnetic powder motor 21, and the winding frame 5 controls the winding tension via a torque motor 22. The magnetic powder motor 21 can adjust its torque in real time according to the changes in the sheet diameter and the sheet characteristics, facilitating efficient adjustment of the unwinding tension of the unwinding frame 1. The torque motor 22 can maintain a constant torque over a wide speed range to provide stable winding tension.

[0048] The working process of the foam material repair device in this utility model is as follows: The sheet material released from the unwinding frame 1 is sequentially transported along the first rotating roller 8, the gravity roller 6, and the second rotating roller 9. Then, the sheet material passes between the two heating rows 7, through the first traction roller 15 and the second traction roller 16, and finally arrives at the winding frame 5 for winding and storage. When there are water stains or insect marks on one side of the sheet material, the heating row 7 moves towards the surface of the sheet material with water stains or insect marks to heat the sheet material. At the same time, the third adjusting cylinder 17 adjusts the gap between the first traction roller 15 and the second traction roller 16 and adjusts the rotation speed of the second traction roller 16. The surfaces of the first traction roller 15 and the second traction roller 16 roll and press the surface of the sheet material. The malleable surface of the sheet material is repaired by the rolling and pressing of the two traction rollers, thus removing water stains or insect marks. When the sheet thickness exceeds the standard due to thickness rebound, the first adjusting cylinder 13 and the second adjusting cylinder 14 simultaneously adjust the position of the two heating elements 7, causing the heating elements 7 to move towards the sheet. The heating elements 7 heat both sides of the sheet, making the sheet soft and malleable. The gap between the first traction roller 15 and the second traction roller 16 is adjusted, and the speed of the second traction roller 16 is increased. The traction frame 4 pulls and stretches the sheet, making the sheet thinner to the standard thickness. During the repair process, when the first tension sensing contact 10 and the second tension sensing contact 11 sense the gravity roller 6, they promptly adjust the speed of the unwinding frame 1 to keep the sheet tension within the set range.

[0049] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A foam material repair device, characterized in that, include: The unwinding rack, the sheet storage rack, the heating rack, the traction rack, and the winding rack are arranged sequentially along the sheet conveying direction; The sheet storage rack is equipped with a gravity roller, which is used to adjust the sheet tension passing through the heating rack and the traction rack; The heating frame includes two heating rows arranged vertically and aligned, which can heat the front and back sides of the sheet respectively. The traction frame includes two pairs of traction rollers, with a gap between the two traction rollers for the sheet to pass through, in order to roll and process the sheet heated by the heating frame. The unwinding rate of the unwinding frame and the winding rate of the winding frame are both adjustable.

2. The foam material repair device according to claim 1, characterized in that, The tablet holder includes a first rotating roller and a second rotating roller, the first rotating roller and the second rotating roller are located on the same horizontal plane, the gravity roller is disposed between the first rotating roller and the second rotating roller, and the first rotating roller, the gravity roller and the second rotating roller form a V-shaped structure, and the gravity roller is adjustable in height along the vertical direction.

3. The foam material repair device according to claim 2, characterized in that, The gravity roller is provided with a first tension sensing contact and a second tension sensing contact on both sides in the vertical direction. The unwinding frame is equipped with a drive motor, which is used to control the unwinding tension of the unwinding frame. The drive motor is communicatively connected to the first tension sensing contact and the second tension sensing contact.

4. The foam material repair device according to claim 3, characterized in that, A sensor switch is also provided below the gravity roller. The sensor switch is located below the second tension sensing contact and is used to issue an alarm when it contacts the gravity roller.

5. The foam material repair device according to claim 1, characterized in that, The heating rack is also equipped with a first adjusting cylinder and a second adjusting cylinder, which are respectively connected to the two heating rows, so that the two heating racks are adjustable vertically.

6. The foam material repair device according to claim 5, characterized in that, The heating frame includes a frame-shaped body, with the first adjusting cylinder and the second adjusting cylinder respectively connected to the vertical ends of the frame, and the output shafts of the first adjusting cylinder and the second adjusting cylinder respectively connected to the two heating elements.

7. The foam material repair device according to claim 1, characterized in that, The traction frame includes a first traction roller and a second traction roller. The first traction roller is connected to a third adjusting cylinder, and the vertical height of the first traction roller is adjustable. The second traction roller is connected to a traction motor via a transmission belt.

8. The foam material repair device according to claim 1, characterized in that, It also includes a frame, on which the storage rack, the heating rack and the traction rack are all mounted.

9. The foam material repair device according to claim 1, characterized in that, The unwinding frame controls the unwinding tension via a magnetic powder motor, and the winding frame controls the winding tension via a torque motor.

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