Automatic abrasive paper tightening device

Abstract

The utility model discloses an automatic abrasive paper tightening device, which relates to textile after-finishing equipment and is mounted at two ends of a grinding roller, abrasive paper is wound on the grinding roller, two sides of the grinding roller are respectively provided with a tightening disc and a turntable, two sides of the abrasive paper are respectively provided with pressing blocks, the pressing blocks are fixed on the tightening disc through screws, and the tightening disc is mounted on a bearing seat. A plurality of first fixing rods are arranged on the bearing seat, a plurality of second fixing rods are arranged on the tightening disc, the first fixing rods and the second fixing rods are connected through tension springs, ratchet wheels and spacer bushes are installed in the bearing seat and installed on a grinding roller shaft head through bearings, the directions of notches of the ratchet wheels installed at the two ends of a grinding roller are opposite, and compression springs and pin rollers are installed in the ratchet wheels. The grinding roller is fixed on the grinding roller shaft head through a screw; the tightening disc is driven to rotate by rotating the rotary disc fixed on the bearing seat, so that the abrasive paper wound on the grinding roller is tightened. The tightening device is simple in structure, good in tightening effect, capable of guaranteeing the sanding effect of the fabric, convenient to replace the tension spring, time-saving, labor-saving and low in cost.

Description

TECHNICAL FIELD

[0001] The utility model relates to textile after finishing equipment, concretely relates to a sandpaper automatic tightening device of sanding machine. BACKGROUND

[0002] In the sanding machine equipment, the sandpaper is wound around the surface of the grinding roller, when the grinding roller runs at high speed, the wound sandpaper cuts the fiber on the surface of the fabric, so that the fabric surface produces nap, and the purpose of improving the fabric hand feeling is achieved. But during the operation of the grinding roller, the sandpaper often appears loose, which affects the sanding effect. Therefore, when the sandpaper appears loose, it is necessary to manually rewrap the sandpaper, which not only wastes manpower, but also wastes time. Therefore, an automatic sandpaper tightening device needs to be designed. CONTENT OF THE UTILITY MODEL

[0003] In view of the defects of the prior art, the utility model provides an automatic sandpaper tightening device, which is simple in structure, good in tightening effect, ensures the sanding effect of the fabric, is convenient to replace the tension spring, saves time and labor, and is low in cost.

[0004] In order to achieve the above object, the utility model provides the following technical scheme: an automatic sandpaper tightening device is installed at both ends of a grinding roller, sandpaper is wound around the grinding roller, a tightening disc and a rotating disc are arranged at both sides of the grinding roller respectively, pressure blocks are arranged at both sides of the sandpaper respectively, the pressure blocks are fixed on the tightening disc through screws, and the tightening disc is installed on a bearing seat; a plurality of fixed rods one are arranged on the bearing seat, a plurality of fixed rods two are arranged on the tightening disc, the fixed rods one and the fixed rods two are connected through tension springs, a ratchet wheel and a spacer sleeve are installed in the bearing seat and are installed on the head of the grinding roller shaft through a bearing, the ratchet wheels installed at both ends of the grinding roller have opposite notch directions, a compression spring and a roller are installed in the ratchet wheel and are fixed on the head of the grinding roller shaft through screws; by rotating the rotating disc fixed on the bearing seat, the tightening disc is driven to rotate, so that the sandpaper wound on the grinding roller is tightened.

[0005] As a preferred, the fixed rods one, the fixed rods two and the tension springs are provided in sets, including 2-4 sets.

[0006] The utility model is installed at both ends of the grinding roller, and the rotating directions of the tightening discs at both ends are opposite. The ratchet wheel, the roller, the compression spring, the spacer sleeve and the bearing are installed in the bearing seat, the ratchet wheel is fixed on the head of the grinding roller shaft through screws, so that the bearing seat can only rotate in one direction. The tightening disc is installed on the bearing seat and is connected through the tension spring, when the rotating disc is rotated, the bearing seat drives the tightening disc to rotate through the tension spring, and can only rotate in one direction. When the sandpaper is wound on the grinding roller, the pressure blocks at both sides press the head and the tail of the sandpaper, and then the rotating disc is rotated, so that the sandpaper can be tightened.

[0007] The utility model discloses a beneficial effect: when tightening the sand paper, the two side turntable rotates, drives the tension spring to stretch, gives sand paper a pre-tightening force, when sand paper appears loose after working for a period of time, the two side tension spring still can tighten sand paper by the elastic force, need not manual rewinding, has saved manual and time, has guaranteed the sanding effect of fabric. The replacement tension spring is convenient, saves time and labour, and the cost is low. BRIEF DESCRIPTION OF DRAWINGS

[0008] Figure 1 For the structure of the utility model embodiment Figure 1 ;

[0009] Figure 2 For the structure of the utility model embodiment Figure 2 ;

[0010] Figure 3 For the B cross-sectional view in the utility model embodiment Figure 2 ;

[0011] Figure 4 For the A place local enlarged view in the utility model embodiment Figure 2 ;

[0012] Figure 5 For the C cross-sectional view in the utility model embodiment Figure 4 .

[0013] In the drawing: 1, sand paper;2, tightening disc;3, pressing block;4, turntable;5, grinding roller;6, bearing seat;7, fixed rod one;8, tension spring;9, ratchet wheel;10, spacer sleeve;11, fixed rod two;12, compression spring;13, roller. DETAILED DESCRIPTION

[0014] The technical scheme in the utility model embodiments will be described clearly and completely below in conjunction with the drawings of the utility model embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0015] As Figure 1 , Figure 2 shown, a sand paper automatic tightening device is installed at both ends of a grinding roller 5, sand paper 1 is wound on the grinding roller 5, the grinding roller 5 is provided with a tightening disc 2 and a turntable 4 at both sides respectively, the sand paper 1 is provided with a pressing block 3 at both sides respectively, the pressing block 3 is fixed on the tightening disc 2 through a screw, the tightening disc 2 is installed on a bearing seat 6 and can rotate in the circumferential direction.

[0016] As Figure 3As shown, the bearing seat 6 is provided with a plurality of fixed rods one 7, the tightening disc 2 is provided with a plurality of fixed rods two 11, the fixed rods one 7 and the fixed rods two 11 are connected through the tension spring 8, the fixed rods one 7, the fixed rods two 11 and the tension spring 8 are set in a complete set, including three sets.

[0017] As shown in the drawings, Figure 4 , Figure 5 As shown, the ratchet wheel 9 and the spacer 10 are installed in the bearing seat 6 and are mounted on the shaft head of the grinding roller 5 through bearings, the ratchet wheels 9 mounted on the two ends of the grinding roller 5 are opposite in the gap direction, the compression spring 12 and the roller 13 are installed in the ratchet wheel 9, and the ratchet wheel 9 is fixed on the shaft head of the grinding roller 5 through screws, so that the ratchet wheel 9 can only rotate in one direction. The bearing seat 6 can only rotate in one direction due to the effects of the ratchet wheel 9, the spring 12 and the roller 13. By rotating the rotating disc 4 fixed on the bearing seat 6, the tightening disc 2 is driven to rotate, so that the sandpaper 1 wound on the grinding roller 5 is tightened. When the sandpaper 1 is loose, the tension spring 8 will retract due to the loss of the tension of the sandpaper 1, drive the tightening disc 2 to rotate, so as to realize the function of automatically tightening the sandpaper.

[0018] In the utility model, the gap directions of the ratchet wheels 9 mounted on the two ends of the grinding roller 5 must be opposite, so that the tightening disc 2 at one end can only rotate forward, and the tightening disc 2 at the other end can only rotate reversely, that is, can only rotate in the direction of tightening the sandpaper 1. Considering the balance when the grinding roller 5 rotates and the tightening stroke of the tightening disc, the number of the tension springs 8 connecting the bearing seat 6 and the tightening disc 2 is usually 2-4, and is uniformly distributed on the circumference. The structure also has the benefits that when the tension spring 8 is damaged, the rotating disc 4 can be disassembled for replacement, which is very convenient.

Claims

1. An automatic sandpaper tightening device, which is installed at both ends of a grinding roller (5) on which sandpaper (1) is wound, characterized in that: The grinding roller (5) is provided with a tightening disc (2) and a rotating disc (4) on both sides, the sandpaper (1) is provided with a pressing block (3) on both sides, the pressing block (3) is fixed on the tightening disc (2) through a screw, and the tightening disc (2) is installed on a bearing seat (6); a plurality of fixed rods one (7) are arranged on the bearing seat (6), a plurality of fixed rods two (11) are arranged on the tightening disc (2), the fixed rods one (7) and the fixed rods two (11) are connected through a tension spring (8), a ratchet wheel (9) and a spacer sleeve (10) are installed in the bearing seat (6) and are installed on the shaft head of the grinding roller (5) through a bearing, the ratchet wheels (9) installed on both ends of the grinding roller (5) are opposite in the gap direction, a compression spring (12) and a roller (13) are installed in the ratchet wheel (9), and the ratchet wheel (9) is fixed on the shaft head of the grinding roller (5) through a screw; the sandpaper (1) wound on the grinding roller (5) is tightened by rotating the rotating disc (4) fixed on the bearing seat (6) to drive the tightening disc (2) to rotate.

2. An automatic sandpaper tightening device as claimed in claim 1, characterized in that: The fixed rods one (7), the fixed rods two (11) and the tension spring (8) are provided in sets, and 2-4 sets are included.

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