Non-woven fabric three-dimensional bag hot-press forming device with deviation rectifying function

Abstract

This utility model relates to the field of nonwoven bag production technology, specifically a hot-pressing forming device for nonwoven three-dimensional bags with a correction function. It includes a base, a material roller at the right end of the base, a tension roller one at the bottom of the right end of the base, a tension roller two at the top of the right end of the base, a tension roller three at the bottom of the middle end of the base, and a conveyor belt at the left end of the base. A drive motor is fixedly installed on the outer side of the base via a frame plate, and the tension roller three is driven by the drive motor. This utility model, through the setting of a flat plate and in conjunction with a transmission rod, enables the flat plates on both sides to physically eliminate wrinkles on the top of the nonwoven fabric side. The flat plate can quickly eliminate residual fabric deformation during the lifting gap of the hot press head, ensuring that the nonwoven fabric maintains a balanced surface tension when entering the conveyor belt after hot pressing, effectively preventing interlayer misalignment caused by wrinkles, and ensuring consistent flatness of the fabric during winding.

Description

Technical Field

[0001] This utility model relates to the field of nonwoven bag production technology, specifically to a nonwoven three-dimensional bag hot pressing forming device with a correction function. Background Technology

[0002] With the deepening of my country's "plastic ban," the application of non-woven bags as environmentally friendly packaging materials in supermarkets, logistics, and other fields continues to expand. The surge in market demand has placed higher demands on the automation level and product consistency of non-woven bag production. In the production process of non-woven stand-up pouches, thermoforming is a key step in forming the three-dimensional structure of the bag. However, during continuous conveying, non-woven materials are susceptible to lateral displacement due to factors such as uneven tension and roller assembly errors, leading to defects such as pattern misalignment and asymmetrical creases during thermoforming, seriously affecting the product's sealing performance and appearance quality.

[0003] Existing technology, such as the patent publication number "CN220283064U", discloses a thermoforming device for non-woven shopping bags. This patent relates to a thermoforming device for non-woven shopping bags, aiming to solve the technical problem of low cutting efficiency of current non-woven fabrics. It includes a conveyor, a pressing assembly, and an adjusting assembly. The conveyor includes a support plate, rollers, a fixed frame, a drive cylinder, a moving block, and a cutter. Two support plates are symmetrically arranged on both sides of the conveyor. The rollers are connected to the support plates at both ends. The fixed frame is mounted on the conveyor. The drive cylinder is located on... The device is mounted on a fixed frame; a movable block is connected to the piston end of a drive cylinder; a cutter is mounted on the movable block; a clamping assembly is mounted on a conveyor; the clamping assembly includes a fixed block, a chute A, a return spring A, a sliding block, and a clamping roller; the fixed blocks are located on both sides of the conveyor; the chute A is mounted on the fixed block; one end of the return spring is connected to the inner wall of the chute A; the sliding block is connected to the other end of the return spring A; both ends of the clamping roller are connected to two opposite sliding blocks on both sides of the conveyor; an adjustment assembly is mounted on the cutter. This patent has the advantage of high efficiency in non-woven fabric cutting.

[0004] However, current thermoforming devices for nonwoven shopping bags have the following problems: 1) When cutting the nonwoven fabric, the vibration of the equipment causes the nonwoven fabric to shift, further leading to a loss of cutting accuracy and thermoforming position accuracy; 2) At the moment of thermoforming, the nonwoven fabric will wrinkle due to the heat, which is not conducive to the subsequent winding of the nonwoven fabric. In view of this, we propose a thermoforming device for nonwoven three-dimensional bags with a deviation correction function. Utility Model Content

[0005] The purpose of this utility model is to provide a non-woven three-dimensional bag hot pressing forming device with a correction function. This non-woven three-dimensional bag hot pressing forming device with a correction function solves the problem that hot pressing forming devices cannot correct deviation.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A nonwoven fabric three-dimensional bag thermoforming device with a correction function includes a base, a material roller at the right end of the base, a tension roller one at the bottom of the right end of the base, a tension roller two at the top of the right end of the base, a tension roller three at the bottom of the middle end of the base, and a conveyor belt at the left end of the base. A drive motor is fixedly installed on the outer side of the base via a frame plate, and the tension roller three is driven by the drive motor. The tension roller three is connected to the rotating roller of the conveyor belt and the tension roller one via a transmission strip. A thermoforming machine is installed at the middle end of the base. A correction device is installed on the top of the conveyor belt near the thermoforming machine. The correction device includes a fixing block, which is fixedly installed on the inner wall of the base. A rotating shaft passes through and is rotatably installed on the inner wall of the fixing block. One end of a transmission rod is fixedly installed on the outer wall of the rotating shaft. A flat plate is fixedly installed on the other end of the transmission rod. A connecting block is fixedly installed on the outer wall of the bottom end of the rotating shaft. An arc-shaped block is fixedly installed on the side of the connecting block away from the base. A triangular abutment wheel is fixedly installed on the outer wall of the rotating roller of the conveyor belt.

[0008] Preferably, a torsion spring is provided between the rotating shaft and the fixed block, the opposite side of the flat plate is set as an inclined surface, the side of the arc-shaped block near the conveyor belt is set as a semi-arc, the outer wall of the triangular contact wheel is a triangular protrusion, and the semi-arc surface of the arc-shaped block is located on the movement trajectory of the triangular contact wheel.

[0009] Preferably, the correction device further includes a connecting rod and a correction roller. The connecting rod is fixedly installed on the inclined surface of the flat plate, and the correction roller is rotatably installed on the outer wall of the connecting rod. The outer wall of the correction roller is made of frosted material, and the correction roller rotates counterclockwise.

[0010] By employing the above technical solution, this utility model provides a thermoforming device for nonwoven fabric three-dimensional bags with a correction function. It possesses at least the following beneficial effects:

[0011] (1) By setting up a flat plate and cooperating with the transmission rod, the flat plates on both sides physically eliminate the wrinkles on the top of the non-woven fabric side. The flat plate can quickly eliminate the fabric deformation residue in the gap of the hot press head, so that the non-woven fabric after hot pressing maintains a balanced surface tension when entering the conveyor belt, effectively preventing the interlayer misalignment caused by wrinkles, and ensuring the uniform flatness of the fabric when winding.

[0012] (2) By setting up the correction roller, the connecting rod rotates inward on the flat plate and moves towards the hot press forming machine. The counterclockwise rotation of the correction roller makes it opposite to the direction of the conveyor belt. The frosted material of the correction roller helps the offset non-woven fabric to move inward to the center. The frosted surface forms a controllable frictional contact with the edge of the non-woven fabric. Through continuous lateral pushing action, the slight offset caused by the release of hot press stress or equipment vibration is gradually corrected to the center position, so that the fabric naturally returns to the preset path before winding, ensuring the layer alignment accuracy and winding neatness during continuous production. Attached Figure Description

[0013] The accompanying drawings, which are included to provide a further understanding of the present invention, form part of this application:

[0014] Figure 1 This is a front view schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a bottom view of the overall structure of this utility model;

[0016] Figure 3 This is a cross-sectional schematic diagram of the correction device in Embodiment 1;

[0017] Figure 4 This is an enlarged schematic diagram of point A in this embodiment 2.

[0018] In the diagram: 1. Base; 11. Material roller; 12. Tensioning roller one; 13. Tensioning roller two; 14. Tensioning roller three; 15. Conveyor belt; 16. Drive motor; 17. Hot press forming machine; 2. Correction device; 21. Fixed block; 22. Rotating shaft; 23. Transmission rod; 24. Flat plate; 25. Connecting block; 26. Arc block; 27. Triangular contact wheel; 28. Connecting rod; 29. ​​Correction roller. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0020] A thermoforming device for nonwoven three-dimensional bags with correction function, such as Figures 1-3As shown, the system includes a base 1, a material roller 11 at the right end of the base 1, a tension roller 12 at the bottom right end of the base 1, a tension roller 2 13 at the top right end of the base 1, a tension roller 3 14 at the bottom middle end of the base 1, a conveyor belt 15 at the left end of the base 1, a drive motor 16 fixedly mounted on the outer side of the base 1 via a frame plate, and the tension roller 3 14 is driven by the drive motor 16. The tension roller 3 14 is connected to the rotating roller of the conveyor belt 15 and the tension roller 12 via a transmission bar. A thermoforming machine 17 is located at the middle end of the base 1. A correction device 2 is provided on the top of the conveyor belt 15 near the hot press forming machine 17. The correction device 2 includes a fixed block 21, which is fixedly installed on the inner wall of the base 1. A rotating shaft 22 is installed through and rotatably on the inner wall of the fixed block 21. One end of the transmission rod 23 is fixedly installed on the outer wall of the rotating shaft 22. A flat plate 24 is fixedly installed on the other end of the transmission rod 23. A connecting block 25 is fixedly installed on the outer wall of the bottom end of the rotating shaft 22. An arc-shaped block 26 is fixedly installed on the side of the connecting block 25 away from the base 1. A triangular contact wheel 27 is fixedly installed on the outer wall of the rotating roller of the conveyor belt 15.

[0021] A torsion spring is provided between the rotating shaft 22 and the fixed block 21. The opposite side of the flat plate 24 is set as an inclined surface. The side of the arc block 26 near the conveyor belt 15 is set as a semi-arc. The outer wall of the triangular contact wheel 27 is a triangular protrusion, and the semi-arc surface of the arc block 26 is located on the movement trajectory of the triangular contact wheel 27.

[0022] In use, the nonwoven fabric three-dimensional bag thermoforming device with correction function of this utility model fixes the nonwoven fabric to the outer wall of the material roller 11, and pulls it to the conveyor belt 15 in sequence through the surfaces of tension roller 12, tension roller 23, and tension roller 34. The nonwoven fabric is then fixed to the traction end. At the same time, the drive motor 16 and the thermoforming machine 17 are turned on. The thermoforming machine 17 thermoforms the nonwoven fabric. The drive motor 16 drives the tension roller 34 to rotate. The tension roller 314 drives the rotation of the tension roller 12 and the rollers of the conveyor belt 15 through the conveyor strip. The rotation of the rollers drives the triangular contact wheel 27 to rotate. The protruding part of the triangular contact wheel 27 abuts against the material roller 12. The semi-circular surface of the arc block 26 causes the connecting block 25 to rotate around the pivot 22 towards the inner wall of the base 1. The pivot 22 drives the transmission rod 23 to rotate, and the transmission rod 23 drives the flat plate 24 to rotate. The pivot 22 is then reset by the torsion spring between the fixed block 21 and the pivot 22. The flat plates 24 on both sides physically eliminate the wrinkles on the top of the non-woven fabric side. The flat plate 24 can quickly eliminate the fabric deformation residue during the lifting gap of the hot press head, so that the non-woven fabric after hot pressing maintains a balanced surface tension when entering the conveyor belt 15, effectively preventing interlayer misalignment caused by wrinkles and ensuring the uniform flatness of the fabric during winding. Example

[0023] This embodiment, based on embodiment 1, specifically includes the following:

[0024] like Figure 4 As shown, the correction device 2 also includes a connecting rod 28 and a correction roller 29. The connecting rod 28 is fixedly installed on the inclined surface of the flat plate 24, and the correction roller 29 is rotatably installed on the outer wall of the connecting rod 28. The outer wall of the correction roller 29 is made of frosted material, and the correction roller 29 rotates counterclockwise.

[0025] In the use of the nonwoven fabric three-dimensional bag thermoforming device with correction function, after the thermoforming machine 17 thermoforms the nonwoven fabric, the nonwoven fabric will shift due to factors such as equipment vibration. When the flat plate 24 rotates inward, the flat plate 24 drives the connecting rod 28 to move inward, and the connecting rod 28 drives the correction roller 29 to move inward. The counterclockwise rotation of the correction roller 29 is set so that it is opposite to the rolling direction of the conveyor belt 15. The frosted material of the correction roller 29 helps to push the shifted nonwoven fabric inward to the center. The frosted surface forms a controllable frictional contact with the edge of the nonwoven fabric. Through continuous lateral pushing action, the slight shift caused by the release of thermoforming stress or equipment vibration is gradually corrected to the center position, so that the fabric naturally returns to the preset path before winding, ensuring the layer alignment accuracy and winding neatness during continuous production.

[0026] 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 process, method, article, or apparatus.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A thermoforming device for nonwoven three-dimensional bags with a correction function, comprising a base (1), characterized in that: A material roller (11) is provided at the right end of the base (1), a tension roller one (12) is provided at the bottom right end of the base (1), a tension roller two (13) is provided at the top right end of the base (1), a tension roller three (14) is provided at the bottom middle end of the base (1), a conveyor belt (15) is provided at the left end of the base (1), a drive motor (16) is fixedly installed on the outer side of the base (1) through a frame plate, and the tension roller three (14) is driven by the drive motor (16), and the tension roller three (14) is connected to the rotating roller of the conveyor belt (15) and the tension roller one (12) through a transmission bar, respectively. A hot press molding machine (17) is provided at the middle end of the base (1). The conveyor belt (15) is provided with a correction device (2) near the top of the hot press forming machine (17). The correction device (2) includes a fixed block (21), which is fixedly installed on the inner wall of the base (1). The rotating shaft (22) passes through and is rotatably installed on the inner wall of the fixed block (21). One end of the transmission rod (23) is fixedly installed on the outer wall of the rotating shaft (22). The flat plate (24) is fixedly installed on the other end of the transmission rod (23). The connecting block (25) is fixedly installed on the outer wall of the bottom end of the rotating shaft (22). The arc block (26) is fixedly installed on the side of the connecting block (25) away from the base (1). The triangular contact wheel (27) is fixedly installed on the outer wall of the conveyor belt (15) roller.

2. The nonwoven fabric three-dimensional bag thermoforming device with correction function according to claim 1, characterized in that: A torsion spring is provided between the rotating shaft (22) and the fixed block (21). The opposite side of the flat plate (24) is set as an inclined surface. The side of the arc block (26) near the conveyor belt (15) is set as a semi-arc. The outer wall of the triangular contact wheel (27) is a triangular protrusion, and the semi-arc surface of the arc block (26) is located on the movement trajectory of the triangular contact wheel (27).

3. The nonwoven fabric three-dimensional bag thermoforming device with correction function according to claim 2, characterized in that: The correction device (2) further includes a connecting rod (28) and a correction roller (29). The connecting rod (28) is fixedly installed on the inclined surface of the flat plate (24). The correction roller (29) is rotatably installed on the outer wall of the connecting rod (28). The outer wall of the correction roller (29) is made of frosted material, and the correction roller (29) rotates counterclockwise.

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