Abrasive cloth base stretching and conveying device

Abstract

The utility model relates to an abrasive cloth base stretching and conveying device which comprises a first machine frame, a cloth storage frame is arranged on one side of the first machine frame, an uncoiling device, a stretching device and a first turning roller are arranged on the first machine frame, a stop roller is arranged above the first turning roller, a connecting support is arranged on the stop roller, and the connecting support is connected with the uncoiling device. A first driving air cylinder is arranged on the connecting support, a second rack is arranged on one side of the cloth storage frame, a second steering roller is arranged on the second rack, a power roller is arranged above the second steering roller, a third steering roller is arranged on the cloth storage frame, a movable connecting frame is arranged above the third steering roller, and a fourth steering roller is arranged on the movable connecting frame. A tension sensor is arranged on the movable connecting frame, and a hanging ring is arranged on the tension sensor. Abrasive cloth base materials close to each other in tension can be conveyed into the heating equipment. The utility model has the advantages of convenient use and wide market prospect.

Description

Technical Field

[0001] This utility model relates to the field of stretch conveying equipment for abrasive cloth, specifically to a stretch conveying device for abrasive cloth. Background Technology

[0002] The production of abrasive belts generally includes four processes: raw fabric treatment, roll manufacturing, post-processing of the rolls, and conversion. These four processes are described below: Raw fabric treatment refers to the substrate used in abrasive belts, which can be cloth, paper, or a composite substrate. Paper, except for waterproof paper, generally does not require treatment. The composite substrate is a combination of paper and cloth, sometimes purchased directly from a supplier, or completed on the raw fabric treatment line or roll manufacturing line at the abrasive belt manufacturer. This section mainly describes the main processes of fabric substrate treatment, including scraping, singeing, dewaxing, dyeing, impregnation and sizing, stretching, and calendering. Different processes are selected depending on the specific requirements. Roll manufacturing includes the main processes of label printing, adhesive coating, sanding, re-adhesion, and drying. These processes are all completed on a single production line, forming a coordinated operation. Post-processing of the rolls refers to the series of treatments the abrasive cloth undergoes after it leaves the drying chamber before entering the conversion process. Post-processing of the rolls includes post-curing, storage, humidification, and flexing. Only after these treatment processes can the performance and quality of the abrasive cloth reach the predetermined goals. Conversion refers to the process of converting a large roll of abrasive cloth into abrasive belts or products in disc, sheet, or other shapes.

[0003] Before the abrasive cloth is stretched and then heat-set, it has already undergone processes such as scraping, singeing, dewaxing, dyeing, and impregnation with sizing. The heat-setting process involves feeding the abrasive cloth base material into the heating equipment after stretching. Conventional abrasive cloth manufacturers use abrasive cloth roll transfer equipment to move semi-finished abrasive cloth within the workshop. This presents a problem: after a roll of semi-finished abrasive cloth is stretched, the stretched abrasive cloth base material needs to be continuously fed into the heating equipment. Although the conveyed abrasive cloth base material and the rolled abrasive cloth base material can be connected by sewing, the sewing process takes time. However, abrasive cloth production lines use a continuous processing technology, meaning that stretching and heat-setting after unwinding constitute a complete process. Therefore, in existing technology, a storage rack is used to temporarily store the stretched abrasive cloth. The stretched abrasive cloth base material passes sequentially through the lower and upper rollers of the storage rack. When one roll of abrasive cloth base material is finished being conveyed, during the connection process between the current roll and the next roll, the distance between the upper and lower rollers of the storage rack can be shortened to achieve continuous conveying of the stretched abrasive cloth. However, this process is prone to problems. Although shortening the distance between the upper and lower rollers of the storage rack allows for continuous conveying of stretched abrasive cloth base material to the heating equipment, the stretched abrasive cloth base material conveyed by shortening the distance between the upper and lower rollers is difficult to maintain the same stretch as the stretched abrasive cloth base material conveyed in the normal process. This leads to localized inconsistencies in stretch during the change of abrasive cloth base material, resulting in different heat treatment effects and potentially causing localized defects in downstream processes. Therefore, there is room for improvement in the existing technology, which aims to solve the problem of continuously feeding abrasive cloth base material with approximately uniform tensile strength into the heating equipment, thereby improving the approximation of the semi-finished product and facilitating downstream processing. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this utility model provides a stretching conveying device for conveying abrasive cloth base material with a similar tension to a heating device, thereby overcoming the deficiencies in existing technologies.

[0005] The technical solution adopted by this utility model is as follows: a stretching and conveying device for abrasive cloth base, including a first frame, a cloth storage rack on one side of the first frame, an unwinding device, a stretching device and a first steering roller arranged sequentially along the direction away from the cloth storage rack to the direction closer to the cloth storage rack on the first frame, a stop roller arranged above the first steering roller, a connecting bracket arranged on both ends of the stop roller, a first driving cylinder arranged above each connecting bracket, a second frame arranged on the side of the cloth storage rack away from the first frame, a second steering roller arranged on the second frame, a power roller arranged above the second steering roller, a plurality of parallel third steering rollers arranged sequentially at intervals along the direction from the first steering roller to the second steering roller on the cloth storage rack, a movable connecting frame arranged above the plurality of third steering rollers, a fourth steering roller arranged on each movable connecting frame between two adjacent third steering rollers, the plurality of fourth steering rollers being distributed at the end of the movable connecting frame closer to the third steering roller, a tension sensor arranged on the end of the movable connecting frame away from the third steering roller, and a lifting ring arranged on the tension sensor.

[0006] Preferably, the top of the fabric storage rack is provided with a first support, a drive shaft is provided on the first support, a first drive motor is drivenly connected to the drive shaft, a number of tension sensors are used, each tension sensor is equipped with a corresponding lifting ring, the number of tension sensors are evenly distributed on both sides of the drive shaft, a second support is provided on both sides of the first support, a driven shaft is provided on each second support, and a transmission device is provided on each lifting ring. The transmission device includes a steering roller provided on the driven shaft adjacent to the lifting ring, a connecting drum provided on the drive shaft on one side of the steering roller, and a steel wire rope provided on the steering roller, the connecting drum, and the lifting ring.

[0007] Preferably, the fabric storage rack includes four uprights, each upright has a rectangular cross-section, and each upright and the movable connecting frame are respectively provided with a limiting guide device. Each limiting guide device includes a limiting slide plate, and the limiting slide plate has a concave cross-section.

[0008] Preferably, each of the limiting guide devices further includes a top wheel assembly disposed between the inner wall of the limiting slide and the adjacent column, wherein the number of the top wheel assemblies is several, and each top wheel assembly includes at least two top wheels.

[0009] Preferably, two stop rollers are used, with the two stop rollers located on both sides of the central axis of the first steering roller, and each stop roller has a rubber layer on its outer side.

[0010] Preferably, the stretching device includes a first roller on a first frame, a second roller on the first frame below the first roller, a third roller on the first frame below the second roller, a first sprocket on the first roller, a second sprocket on the second roller, and a transmission chain on the second sprocket and the first sprocket, wherein the diameter of the second sprocket is not greater than the diameter of the first sprocket.

[0011] The beneficial effects of this utility model are as follows: First, by utilizing the downward movement of the stop roller above the first steering roller, the first steering roller and the stop roller are brought into contact, thereby stopping the abrasive cloth base material. Then, by moving the movable connecting frame downward, the distance between the third steering roller and the fourth steering roller is gradually shortened, thereby continuously conveying the stretched abrasive cloth base material downstream. The tension sensor installed on the movable connecting frame indirectly provides feedback on the stretching degree of the conveyed abrasive cloth base material to meet the needs of downstream processes and reduce the output of defective products.

[0012] Secondly, each stop roller of this invention has a rubber layer on its outer side; the rubber layer adopts a ring structure made of rubber material; thereby increasing the friction between the stop roller and the abrasive cloth base material passing through the first steering roller.

[0013] This utility model has a simple structure, is easy to operate, and has a clever design, which greatly improves work efficiency and has good social and economic benefits. It is a product that is easy to promote and use. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 for Figure 1 A magnified view of detail A.

[0016] Figure 3 This is a three-dimensional structural diagram of the fabric storage rack of this utility model.

[0017] Figure 4 This is a left view of the fabric storage rack of this utility model.

[0018] Figure 5 for Figure 4 A magnified view of detail B.

[0019] Figure 6 This is a schematic diagram of the structure of the unwinding device of this utility model. Detailed Implementation

[0020] like Figures 1 to 6As shown, a stretching and conveying device for abrasive cloth base includes a first frame 1. A cloth storage rack 2 is provided on one side of the first frame 1. An unwinding device, a stretching device, and a first guide roller 3 are sequentially arranged on the first frame 1 from the direction away from the cloth storage rack 2 to the direction closer to the cloth storage rack 2. A stop roller 4 is provided above the first guide roller 3. A connecting bracket 5 is provided at both ends of the stop roller 4. A first drive cylinder 6 is provided above each connecting bracket 5. A second frame 7 is provided on the side of the cloth storage rack 2 away from the first frame 1. A second guide roller 8 is provided on the second frame 7. A power roller 9 is provided above the second guide roller 8. A third drive motor is connected to the force roller 9. Several parallel third steering rollers 10 are arranged sequentially along the direction from the first steering roller 3 to the second steering roller 8 on the fabric storage rack 2. A movable connecting frame 11 is arranged above the several third steering rollers 10. A fourth steering roller 12 is arranged on each movable connecting frame 11 between two adjacent third steering rollers 10. Several fourth steering rollers 12 are distributed at the end of the movable connecting frame 11 close to the third steering rollers 10. A tension sensor 13 is arranged on the end of the movable connecting frame 11 away from the third steering rollers 10. A lifting ring 14 is arranged on the tension sensor 13.

[0021] The top of the fabric storage rack 2 is provided with a first support 15, and a drive shaft 16 is provided on the first support 15. A first drive motor 17 is connected to the drive shaft 16. There are several tension sensors 13, and each tension sensor 13 is equipped with a corresponding lifting ring 14. The tension sensors 13 are evenly distributed on both sides of the drive shaft 16. A second support 18 is provided on both sides of the first support 15. Each second support 18 is provided with a driven shaft 19. Each lifting ring 14 is provided with a transmission device. The transmission device includes a steering roller 20 provided on the driven shaft 19 adjacent to the lifting ring 14, a connecting drum 21 provided on the drive shaft 16 on one side of the steering roller 20, and a steel wire rope 22 provided on the steering roller 20, the connecting drum 21, and the lifting ring 14.

[0022] The fabric storage rack 2 includes four uprights, each with a rectangular cross-section. Each upright and the movable connecting frame 11 are equipped with a limiting guide device, each including a limiting slide plate 23 with a concave cross-section. Installing the limiting slide plate 23 facilitates the limitation of the movement direction of the movable connecting frame 11. Furthermore, each limiting guide device also includes a set of top wheels between the inner wall of the limiting slide plate 23 and the adjacent upright. Several sets of top wheels are used, each including at least two top wheels 24. This reduces the friction between the uprights of the fabric storage rack 2 and the limiting slide plate 23.

[0023] The number of stop rollers 4 is two, and both stop rollers 4 are parallel to the first steering roller 3. The two stop rollers 4 are located on both sides of the central axis of the first steering roller 3. Installing two stop rollers 4 increases the number of force application points on the first steering roller 3. Furthermore, each stop roller 4 is provided with a rubber layer 25 on its outer side. The rubber layer 25 adopts a ring structure made of rubber material, thereby increasing the friction between the stop roller 4 and the abrasive cloth base material passing through the first steering roller 3.

[0024] The stretching device includes a first roller 26 on a first frame 1, a second roller 27 mounted on the first frame 1 below the first roller 26, a third roller 28 mounted on the first frame 1 below the second roller 27, a first sprocket 29 mounted on the first roller 26, a second sprocket 30 mounted on the second roller 27, and a transmission chain 31 mounted on the second sprocket 30 and the first sprocket 29. The diameter of the second sprocket 30 is not greater than the diameter of the first sprocket 29. A second drive motor is drivenly connected to the first roller 26.

[0025] The unwinding device includes two parallel cantilever arms 32 mounted on one end of a first frame 1, a fourth roller 33 mounted on the two cantilever arms 32, a pressure sensor 34 mounted between each cantilever arm 32 and the fourth roller 33, a fifth roller 35 mounted on the two cantilever arms 32 between the fourth roller 33 and the first frame 1, a brake 36 mounted on the fifth roller 35, and a second drive cylinder 37 mounted on each cantilever arm 32 and the first frame 1. One end of the cantilever arm 32 near the first frame 1 is hinged to the first frame 1, one end of the second drive cylinder 37 is hinged to the cantilever arm 32, and the other end of the cantilever arm 32 is hinged to the first frame 1. The second drive cylinder 37 is located above the cantilever arm 32.

[0026] The instructions for using this product are as follows: Figures 1 to 6As shown, the abrasive cloth base roll is placed in a preset position. The second drive cylinder 37 on the two cantilever 32 is activated, causing the two cantilever 32 to swing until the fourth roller 33 presses it against the abrasive cloth base roll. Then, the free end of the abrasive cloth base roll passes sequentially through the fourth roller 33, the fifth roller 35, the third roller 28 of the stretching device, the second roller 27 of the stretching device, the first roller 26 of the stretching device, the first steering roller 3, the third steering roller 10, the fourth steering roller 12, the second steering roller 8, and the power roller 9, and is then transported downstream. The forward movement of the free end of the abrasive cloth base roll is powered by the power roller 9. During the forward movement of the free end of the abrasive cloth base roll, the... The fourth roller 33 and the fifth roller 35 can operate the brake 36 on the fifth roller 35 to adjust the speed difference between the fourth roller 33 and the fifth roller 35, thereby performing the first stretching of the abrasive cloth base material; then it is conveyed to the stretching device. Since the diameter of the second sprocket 30 in the stretching device is not greater than the diameter of the first sprocket 29, there is a speed difference between the first roller 26 and the second roller 27, thereby achieving the second stretching of the abrasive cloth base material. After being turned by the first steering roller 3, and then by several third steering rollers 10 and several fourth steering rollers 12, it is turned by the second steering roller 8 and finally driven by the power roller 9 to be conveyed to the downstream equipment.

[0027] During this period, after the abrasive cloth base material on the current abrasive cloth base roll is completely conveyed, the first drive cylinder 6 should be driven in time. At this time, the first drive cylinder 6 drives the connecting bracket 5 to move downward until the stop roller 4 is close to the first steering roller 3, thereby stopping the conveying of the abrasive cloth base material. At this time, the upstream replaces another abrasive cloth base roll and sews the free end of the currently conveyed abrasive cloth base material and the replaced abrasive cloth base roll together. During this period, the abrasive cloth base material required downstream is provided by the cloth storage rack 2. Specifically, the first drive motor 17 is turned on, the first drive motor 17 drives the drive shaft 16 to rotate, thereby driving the connecting drum 21 to rotate, thereby causing the wire rope 22 to be released, and thus causing the movable connecting frame 11 to move downward under the limit of the limiting slide plate 23 and the top wheel 24 on the limiting slide plate 23. During this period, several tension sensors 13 are kept within the preset range. After the upstream sand cloth base roll is replaced, the first drive cylinder 6 is reset, and the first drive motor 17 drives the drive shaft 16 to rotate in the opposite direction, thereby driving the movable connecting frame 11 to rise so that the several tension sensors 13 are once again within the preset range.

[0028] In this embodiment, the product utilizes the downward movement of the stop roller 4 above the first steering roller 3 to achieve the contact between the first steering roller 3 and the stop roller 4, thereby stopping the abrasive cloth base material. The moving connecting frame 11 moves downward to gradually shorten the distance between the third steering roller 10 and the fourth steering roller 12, thereby continuously conveying the stretched abrasive cloth base material downstream. The tension sensor 13 installed on the moving connecting frame 11 indirectly provides feedback on the stretching degree of the conveyed abrasive cloth base material to meet the needs of downstream processes and reduce the output of defective products.

[0029] The embodiments described above are merely preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the patent claims of this utility model should be included within the scope of the patent application of this utility model.

Claims

1. A stretch conveying device for a cloth base of a sand cloth, comprising a first frame (1), one side of the first frame (1) being provided with a cloth storage frame (2), the first frame (1) being sequentially provided with an unwinding device, a stretching device and a first turning roller (3) along a direction from being away from the cloth storage frame (2) to being close to the cloth storage frame (2), characterized in that: The first steering roller (3) is provided with a stop roller (4) above, both ends of the stop roller (4) are respectively provided with a connecting bracket (5), a first driving cylinder (6) is arranged above each connecting bracket (5), a second rack (7) is arranged on the side of the cloth storage rack (2) away from the first rack (1), a second steering roller (8) is arranged on the second rack (7), a power roller (9) is arranged above the second steering roller (8), a plurality of third steering rollers (10) are arranged on the cloth storage rack (2) in the direction from the first steering roller (3) to the second steering roller (8) and are spaced apart in sequence, a moving connecting frame (11) is arranged above the plurality of third steering rollers (10), a fourth steering roller (12) is arranged on the moving connecting frame (11) between two adjacent third steering rollers (10), the plurality of fourth steering rollers (12) are arranged on one end of the moving connecting frame (11) close to the third steering roller (10), a tension sensor (13) is arranged on the other end of the moving connecting frame (11) away from the third steering roller (10), and a lifting ring (14) is arranged on the tension sensor (13).

2. The stretch conveying apparatus for a cloth base of abrasive cloth according to claim 1, wherein: The top of the cloth storage rack (2) is provided with a first support (15), the first support (15) is provided with a driving shaft (16), the driving shaft (16) is drivingly connected with a first driving motor (17), the number of tension sensors (13) is several, one lifting ring (14) is installed on each tension sensor (13), the plurality of tension sensors (13) are evenly distributed on both sides of the driving shaft (16), second supports (18) are arranged on both sides of the first support (15), a driven shaft (19) is arranged on each second support (18), a transmission device is arranged on each lifting ring (14), the transmission device comprises a steering roller (20) arranged on the driven shaft (19) adjacent to the lifting ring (14), a connecting drum (21) arranged on the driving shaft (16) on one side of the steering roller (20), and a steel wire rope (22) arranged on the steering roller (20), the connecting drum (21) and the lifting ring (14).

3. The stretch conveying apparatus for abrasive cloth bases according to claim 1, wherein: The cloth storage rack (2) comprises four vertical columns, the cross section of each vertical column is in a rectangular structure, each vertical column and the moving connecting frame (11) are respectively provided with a limiting guide device, and each limiting guide device comprises a limiting sliding plate (23).

4. The stretch conveying apparatus for abrasive cloth bases according to claim 3, wherein: Each limiting guide device further comprises a top wheel set arranged between the inner wall of the limiting sliding plate (23) and the vertical column adjacent to the limiting sliding plate (23), and the number of the top wheel set is several.

5. The stretch conveying apparatus for abrasive cloth bases according to claim 1, wherein: The number of the stop roller (4) is two, and the two stop rollers (4) are located on both sides of the central axis of the first steering roller (3), and a rubber layer (25) is arranged on the outer side of each stop roller (4).

6. The stretch conveying apparatus for abrasive cloth bases according to claim 1, wherein: The stretching device comprises a first roller (26) on a first frame (1), a second roller (27) arranged on the first frame (1) below the first roller (26), a third roller (28) arranged on the first frame (1) below the second roller (27), a first sprocket (29) arranged on the first roller (26), a second sprocket (30) arranged on the second roller (27), and a transmission chain (31) arranged on the second sprocket (30) and the first sprocket (29), wherein the diameter of the second sprocket (30) is not greater than the diameter of the first sprocket (29).

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