Tensioning device for conveying belt of sander

Abstract

The utility model discloses a sanding machine conveying belt tensioning device, which belongs to the technical field of conveying belt tensioning, comprises a base and a conveying mechanism arranged on the base, and is characterized in that the top of the base is fixedly connected with a rack, the side surface of the rack is fixedly connected with two connecting frames, the base is provided with a tensioning mechanism for pulling and tensioning the conveying mechanism, and the connecting frames are fixedly connected with two connecting frames. The tensioning mechanism comprises two symmetrically-arranged bearing seats, and one side of each bearing seat is fixedly connected with a connecting rope. The conveying belt tensioning device has the beneficial effects that the tensioning mechanism and the adjusting mechanism are arranged, the position of the rotating roller is automatically adjusted through the effect of the connecting rope and the traction box on the bearing seat, so that the conveying belt can be automatically tensioned when being stretched and loosened, the magnitude and the range of the tensioning force can be adjusted through the balancing weight and the adjusting mechanism, the situation that the tensioning force is too large or too small is avoided, and the conveying belt is not damaged. And manual tensioning is not needed, the automation degree is high, and use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of conveyor belt tensioning, in particular to a conveyor belt tensioning device for a sanding machine. Background Art

[0002] During the use of the sanding machine, especially the woodworking sanding machine equipped with a conveyor belt, the conveyor belt is needed to transport the plate to the lower side of the sanding cloth or sandpaper in the sanding machine for sanding. Usually, the conveyor belt is made of elastic rubber. The thermal conductivity of the rubber conveyor belt is worse than that of the metal conveyor belt. The friction between the rubber conveyor belt and the workpiece when in contact can meet the requirements of stable fit to the workpiece, ensuring stable feeding and sanding operation of the workpiece. The tension range will be different according to different belt types and specifications. Generally speaking, the appropriate tension should be between 70% and 90% of the rated tension of the belt.

[0003] After searching, a Chinese patent announcement number CN216944825U discloses a tensioning device for a conveyor belt of a sanding machine, which includes two support plates, which are arranged vertically and opposite to each other, and the two support plates are respectively provided with long grooves along their length directions, and multiple rotating rollers are rotated in the two long grooves, and the two ends of each rotating roller can extend the long grooves, and each rotating roller is sleeved with a conveyor belt; at least two sliding rods, which are arranged vertically, and the sliding rods can slide against the ends of the length direction of the support plates; an adjusting rod, which is arranged horizontally, and the adjusting rod rotates on the sliding rod, and the end of the adjusting rod can pass through the end of the rotating roller, and the adjusting rod can slide in the long groove; a pushing block, and the pushing block slides in the long groove, and the pushing block can abut against the end of the rotating roller, and the adjusting rod rotates on the pushing block, and a driving mechanism is arranged on the support plate and the sliding rod, and the driving mechanism can drive the pushing block to move close to the sliding rod. The device has the effect of realizing the tension adjustment of the conveyor belt, but when the device is used, when the conveyor belt changes, it is necessary to manually adjust and detect the tension, which is troublesome to use, time-consuming and labor-intensive. Utility Model Content

[0004] The purpose of the utility model is to provide a conveyor belt tensioning device for a sanding machine in order to solve the above problems.

[0005] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0006] A tensioning device for a conveyor belt of a sanding machine comprises a base, a conveying mechanism is arranged on the base, and the characteristics are: a frame is fixedly connected to the top of the base, two connecting frames are fixedly connected to the sides of the frame, a tensioning mechanism for pulling and tensioning the conveying mechanism is arranged on the base, and the tensioning mechanism comprises two symmetrically arranged bearing seats, the bearing seats are slidably connected in the connecting frames, a connecting rope is fixedly connected to one side of the bearing seats, and a pulling box that moves up and down is fixedly connected to the other end of the connecting rope;

[0007] The tensioning mechanism comprises a positioning box, which is arranged at one side of the base, and the pulling box is slidably connected in the positioning box. An adjusting mechanism for adjusting the tensioning force range of the tensioning mechanism is installed on the positioning box.

[0008] Preferably, a plurality of vertically arranged inclined grooves are provided on one side of the pulling box, and the adjusting mechanism includes a spring, which is arranged inside the positioning box, and a limiting plate is fixedly installed on one end of the spring, and the limiting plate is slidably connected in the positioning box, and a wedge block matching the inclined groove is fixedly connected on one side of the limiting plate.

[0009] Preferably, the adjustment mechanism includes an adjustment screw, which is threadedly connected to one side of the positioning box, and an adjustment plate is rotatably connected to the adjustment screw, and one end of the spring away from the limiting plate is fixedly connected to one side of the adjustment plate.

[0010] Preferably, the front and rear sides of the positioning box are fixedly connected with connecting rods, and the inner side of the top of the connecting rod is rotatably connected with a rotating shaft for limiting the connecting rope.

[0011] Preferably, a plurality of evenly arranged counterweights are provided in the pulling box.

[0012] Preferably, two brackets are fixedly connected to the top of the base, and the conveying mechanism includes an active roller and a power component for driving the active roller. The active roller is rotatably connected in the bracket, a conveyor belt is sleeved on the active roller, and a rotating roller is sleeved on the other end of the conveyor belt. The rotating roller is rotatably connected to the inner side of the bearing seat.

[0013] The beneficial effects are: a tensioning mechanism and an adjusting mechanism are provided, and the position of the rotating roller is automatically adjusted through the action of the connecting rope and the pulling box on the bearing seat, so that the conveyor belt can be automatically tensioned when it is stretched and loosened, and the size and range of the tensioning force can be adjusted through the counterweight block and the adjusting mechanism to avoid excessive or insufficient tensioning force. Manual tensioning is not required, the degree of automation is high, and it is easy to use.

[0014] The additional technical features and advantages of the present invention will be more clearly explained in the following description, or can be understood through the specific practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the accompanying drawings:

[0016] Figure 1 It is a schematic diagram of a conveyor belt tensioning device for a sanding machine described in the utility model;

[0017] Figure 2 It is a front view of a conveyor belt tensioning device for a sanding machine described in the utility model;

[0018] Figure 3 It is a schematic diagram of the connection between the connecting frame and the tensioning mechanism of the tensioning device for the conveyor belt of a sanding machine described in the utility model;

[0019] Figure 4 It is a cross-sectional view of a pulling box of a conveyor belt tensioning device for a sanding machine described in the utility model;

[0020] Figure 5 It is a schematic diagram of the cooperation between the pulling box and the adjusting mechanism of the conveyor belt tensioning device of the sanding machine described in the utility model;

[0021] Figure 6 It is a schematic diagram of an adjusting mechanism of a conveyor belt tensioning device for a sanding machine described in the utility model.

[0022] The description of the accompanying drawings is as follows: 101, base; 102, frame; 103, bracket; 104, connecting frame; 201, active roller; 202, conveyor belt; 203, rotating roller; 301, bearing seat; 302, connecting rope; 303, pulling box; 304, counterweight; 305, inclined groove; 306, positioning box; 307, connecting rod; 308, rotating shaft; 401, adjusting screw; 402, adjusting plate; 403, spring; 404, limit plate; 405, wedge block. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0025] The utility model is further described below in conjunction with the accompanying drawings:

[0026] like Figure 1 — Figure 6 As shown, a conveyor belt tensioning device for a sanding machine includes a base 101, on which a conveying mechanism is arranged, characterized in that: the top of the base 101 is connected to a frame 102 by bolts, the side of the frame 102 is connected to two connecting frames 104 by bolts, and a tensioning mechanism for pulling and tensioning the conveying mechanism is arranged on the base 101;

[0027] The tensioning mechanism includes two symmetrically arranged bearing seats 301, which are slidably connected in the connecting frame 104. A connecting rope 302 is welded on one side of the bearing seat 301, and the connecting rope 302 is a flexible steel wire rope. A pulling box 303 that moves up and down is welded on the other end of the connecting rope 302. The tensioning mechanism includes a positioning box 306, which is arranged on one side of the base 101. The pulling box 303 is slidably connected in the positioning box 306. An adjusting mechanism for adjusting the tensioning force range of the tensioning mechanism is installed on the positioning box 306. The pulling box 303 pulls the bearing seat 301 through the connecting rope 302 to provide a certain pulling force to the rotating roller 203, so that when the conveyor belt 202 becomes loose, the bearing seat 301 is automatically pulled to tension the conveyor belt 202.

[0028] In this embodiment, two brackets 103 are connected to the top of the base 101 by bolts. The conveying mechanism includes an active roller 201 and a power component that drives the active roller 201. The active roller 201 is rotatably connected in the bracket 103. A conveyor belt 202 is sleeved on the active roller 201. A rotating roller 203 is sleeved on the other end of the conveyor belt 202. The rotating roller 203 is rotatably connected to the inner side of the bearing seat 301.

[0029] In this embodiment, a plurality of vertically arranged inclined grooves 305 are provided on one side of the pulling box 303, and the adjusting mechanism includes a spring 403, which is arranged inside the positioning box 306, and a limiting plate 404 is fixedly installed on one end of the spring 403, and the limiting plate 404 is slidably connected in the positioning box 306, and a wedge block 405 matching the inclined groove 305 is connected to one side of the limiting plate 404 by bolts. When the conveyor belt 202 becomes loose, the bearing seat 301 is pulled by the connecting rope 302 to re-tighten the rotating roller 203 and the rotating roller 203. In this process, the pulling box 303 descends, and the inclined groove 305 on the side of the pulling box 303 squeezes the wedge block 405, and the wedge block 405 pushes the limiting plate 404 to move slowly. The limiting plate 404 compresses the spring 403, so that the movement of the pulling box 303 is more stable during the tensioning process.

[0030] In this embodiment, the adjustment mechanism includes an adjusting screw rod 401, which is threadedly connected to one side of the positioning box 306. An adjusting plate 402 is rotatably connected to the adjusting screw rod 401. One end of the spring 403 away from the limit plate 404 is fixedly installed on one side of the adjusting plate 402. By rotating the adjusting screw rod 401, the distance between the adjusting plate 402 and the limit plate 404 is adjusted, so that the spring 403 has an initial pressure on the limit plate 404, and the tensioning force range provided by the pulling box 303 as a whole to the conveying mechanism can be adjusted, so that the tensioning force of the conveyor belt 202 is always within an appropriate range, thereby achieving a better tensioning effect.

[0031] In this embodiment, the front and rear sides of the positioning box 306 are connected with a connecting rod 307 by bolts. The top inner side of the connecting rod 307 is rotatably connected with a rotating shaft 308 for limiting the connecting rope 302. The upper edge of the rotating shaft 308 is in the same plane as the axis of the rotating roller 203, so that the upper end of the connecting rope 302 remains horizontal, which has a better pulling effect on the bearing seat 301.

[0032] In this embodiment, a number of evenly arranged counterweights 304 are provided in the pulling box 303. There is friction between the counterweights 304 and the inner wall of the pulling box 303, which can resist a certain vibration when the device is working, so that the overall gravity distribution of the pulling box 303 is even. The overall gravity of the counterweights 304 and the pulling box 303 can provide appropriate tensioning force to avoid the tension being too small to affect the conveying work, and to avoid the tension being too large to affect the life of the device.

[0033] Working principle: Before using the device, according to the specific working state and conveying weight, add appropriate counterweight blocks 304 into the pulling box 303 to arrange the counterweight blocks 304 evenly, then rotate the adjusting screw 401 to adjust the distance between the adjusting plate 402 and the limit plate 404 to adjust the compression amount of the spring 403 to adjust the tensioning force range of the tensioning mechanism. When in use, the power component drives the active roller 201 to rotate, and the active roller 201 drives the conveyor belt 202 and the rotating roller 203 to move, so as to transport materials to the sanding machine. As the device is used, the conveyor belt 202 will become longer and loose, which will affect the conveying. At this time, due to the gravity of the pulling box 303 and the internal counterweight block 304, the connecting rope 302 pulls the bearing seat 301 to provide a certain pulling force to the rotating roller 203, so that when the conveyor belt 202 becomes loose, the bearing seat 301 is automatically pulled to tighten the conveyor belt 202. In this process, the pulling box 303 descends, and the inclined groove 305 on the side of the pulling box 303 squeezes the wedge block 405, and the wedge block 405 pushes the limit The plate 404 moves slowly, and the limit plate 404 compresses the spring 403, so that the movement of the pulling box 303 is more stable during the tensioning process. In addition, during the process of adjusting the tensioning force, the overall gravity of the pulling box 303 and the counterweight block 304 is always equal to the sum of the tensioning force of the conveyor belt 202 and the supporting force provided by the wedge block 405. The limit plate 404 is gradually increased by the thrust of the spring 403, and the supporting force provided by the wedge block 405 to the pulling box 303 is also gradually increased. However, due to the prior adjustment of the adjusting screw rod 401, Finally, the tension of the conveyor belt 202 can be kept within an appropriate range, avoiding the conveyor belt 202 from slipping, and also preventing the tension of the conveyor belt 202 from being too large and affecting its service life. When the pulling box 303 drops to a certain height, the wedge block 405 will detach from the inclined groove 305 at the bottom, and the wedge block 405 will be pushed by the compressed spring 403 and will enter the adjacent inclined groove 305 above, and continue to repeat the above process. During the service life of the conveyor belt 202, there is no need for manual tension adjustment frequently, and it is easy to use.

[0034] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A conveyor belt tensioning device for a sanding machine, comprising a base, on which a conveying mechanism is arranged, characterized in that: The top of the base is fixedly connected to a frame, and the sides of the frame are fixedly connected to two connecting frames. The base is provided with a tensioning mechanism for pulling and tensioning the conveying mechanism, and the tensioning mechanism includes two symmetrically arranged bearing seats, and the bearing seats are slidably connected in the connecting frames. A connecting rope is fixedly connected to one side of the bearing seat, and the other end of the connecting rope is fixedly connected to a pulling box that moves up and down; The tensioning mechanism comprises a positioning box, which is arranged at one side of the base, and the pulling box is slidably connected in the positioning box. An adjusting mechanism for adjusting the tensioning force range of the tensioning mechanism is installed on the positioning box.

2. A sanding machine conveyor belt tensioning device according to claim 1, characterized in that: A plurality of vertically arranged inclined grooves are provided on one side of the pulling box, and the adjusting mechanism includes a spring, which is arranged inside the positioning box. A limiting plate is fixedly installed on one end of the spring, and the limiting plate is slidably connected in the positioning box. A wedge block matching the inclined groove is fixedly connected on one side of the limiting plate.

3. A sanding machine conveyor belt tensioning device according to claim 2, characterized in that: The adjusting mechanism comprises an adjusting screw rod, the adjusting screw rod is threadedly connected to one side of the positioning box, an adjusting plate is rotatably connected to the adjusting screw rod, and one end of the spring away from the limiting plate is fixedly connected to one side of the adjusting plate.

4. The sanding machine conveyor belt tensioning device according to claim 1, characterized in that: The front and rear sides of the positioning box are fixedly connected with connecting rods, and the inner side of the top of the connecting rod is rotatably connected with a rotating shaft for limiting the connecting rope.

5. The conveyor belt tensioning device for a sanding machine according to claim 1, characterized in that: A plurality of evenly arranged counterweight blocks are arranged in the pulling box.

6. A sanding machine conveyor belt tensioning device according to claim 1, characterized in that: Two brackets are fixedly connected to the top of the base, and the conveying mechanism includes an active roller and a power component driving the active roller. The active roller is rotatably connected in the bracket, a conveyor belt is sleeved on the active roller, and a rotating roller is sleeved on the other end of the conveyor belt. The rotating roller is rotatably connected to the inner side of the bearing seat.

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