Negative pressure conveying belt

Abstract

The utility model discloses a negative pressure conveying belt, and relates to the field of belt conveyors. Which comprises a conveying belt assembly and a negative pressure assembly, the conveying belt assembly is wound on a driving roller and driven by the driving roller to move, and is characterized in that the conveying belt assembly comprises a belt, a plurality of kidney-shaped holes are formed in the front face of the belt, and the kidney-shaped holes are formed in the length direction of the belt at intervals and are parallel to one another; the bottom of each kidney-shaped hole is provided with a negative pressure hole, the negative pressure holes are used for being communicated with the negative pressure assembly, and the belt is wound on the driving roller and driven by the conveying roller to move. The thin product conveying device has the advantages that thin products do not need to be clamped in the conveying process, and the flatness degree of the thin products cannot be affected.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of belt conveyor, especially to an improved negative pressure conveying belt. BACKGROUND

[0002] Belt conveying is one of the commonly used conveying methods in industry. It is generally used for continuous conveying of heavy products due to its large load capacity. However, it is difficult to effectively transport thin and light products (such as film-shaped products), which may slip or directly fall off the conveying belt during transportation, affecting the conveying efficiency. SUMMARY

[0003] In order to overcome the shortcomings of the prior art, the utility model provides a negative pressure conveying belt.

[0004] The utility model discloses the following technical scheme is realized: a negative pressure conveying belt, including conveying belt subassembly and negative pressure subassembly, the conveying belt subassembly is around the drive roll and is driven to move by the drive roll, the conveying belt subassembly includes the belt, the front of the belt is equipped with a plurality of waist holes, a plurality of waist holes are arranged along the length direction of the belt and the waist hole is parallel to each other, the bottom of each waist hole is equipped with a negative pressure hole, the negative pressure hole is used for being communicated with the negative pressure subassembly, the belt is around the drive roll and is driven to move by the conveying roll.

[0005] The negative pressure hole penetrates the belt, and the negative pressure subassembly is arranged below the belt. When the negative pressure hole passes through the negative pressure subassembly, a negative pressure is formed in the corresponding waist hole.

[0006] The belt is hollow to form a cavity, the negative pressure hole is communicated with the cavity, the back of the belt is equipped with an air extraction hole communicated with the cavity, the negative pressure subassembly is arranged below the belt, and a negative pressure is formed in the corresponding waist hole when the air extraction hole passes through the negative pressure subassembly.

[0007] The negative pressure subassembly is arranged in the drive roll, the drive roll is hollow to form a containing cavity for containing the negative pressure subassembly, an air extraction port is arranged on the side wall of the containing cavity, the air extraction port is communicated with the air extraction hole when the belt contacts the drive roll, and the negative pressure subassembly is arranged in the containing cavity.

[0008] A one-way valve is arranged in the air extraction hole, and the one-way valve is opened when the air extraction hole is opposite to the air extraction port.

[0009] The one-way valve is arranged in the air extraction hole, and the one-way valve includes a valve plate, one side of the valve plate is rotationally connected in the air extraction hole, a torsional spring is sleeved on the rotation shaft of the valve plate, the torsional spring drives the valve plate to be in a closed state, and the valve plate is opened when the air extraction port is opposite to the air extraction hole.

[0010] The surface of the conveying roller forms a conveying protrusion, and the air suction port is arranged on the conveying protrusion.

[0011] Compared with the prior art, when the thin flat product is placed on the belt, the waist hole can be covered, at this time, the negative pressure can be formed at the waist hole to form the adsorption effect on the product, and the product can be stably fixed on the belt during conveying, so that the belt conveying of the thin product can be realized, and the thin product does not need to be clamped during conveying, and the flatness of the thin product is not affected. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is the structure schematic of the negative pressure conveying belt in the utility model Figure 1 ;

[0013] Figure 2 is the belt surface structure schematic of the negative pressure conveying belt in the utility model;

[0014] Figure 3 is the belt structure section schematic of the negative pressure conveying belt in the utility model Figure 1 ;

[0015] Figure 4 is the structure schematic of the negative pressure conveying belt in the utility model Figure 2 ;

[0016] Figure 5 is the belt structure section schematic of the negative pressure conveying belt in the utility model Figure 2 ;

[0017] Figure 6 is the structure schematic of the negative pressure conveying belt in the utility model Figure 3 ;

[0018] Figure 7 is the driving roller section structure schematic of the negative pressure conveying belt in the utility model;

[0019] In the figure: 1, conveying belt assembly;11, belt;111, waist hole;112, negative pressure hole;113, cavity;114, air suction hole;2, negative pressure assembly;3, driving roller;31, air suction port;32, conveying protrusion;33, mounting frame;4, one-way valve;41, valve plate;42, torsional spring. DETAILED DESCRIPTION

[0020] Next, the utility model is further described in combination with the drawings and specific embodiments, and it should be noted that the following described embodiments or technical features can be combined to form new embodiments without conflict.

[0021] Referring to Figures 1-7 A negative pressure conveying belt, comprising a conveying belt assembly 1 and a negative pressure assembly 2, the conveying belt assembly 1 is driven to move around a driving roller 3 by the driving roller 3, the conveying belt assembly 1 comprises a belt 11, a plurality of waist holes 111 are arranged on the front surface of the belt 11, the plurality of waist holes 111 are arranged along the length direction of the belt 11 and are parallel to each other, a negative pressure hole 112 is arranged at the bottom of each waist hole 111, the negative pressure hole 112 is used for being communicated with the negative pressure assembly 2, and the belt 11 is driven to move around the driving roller 3 by a conveying roller. The waist hole 111 can be arranged obliquely, so that when the thin product is placed on the belt 11, the thin product can be in contact with as many waist holes 111 as possible to form multi-point adsorption, and the thin product is adsorbed more firmly during conveying.

[0022] The core of the negative pressure assembly 2 in the utility model is a negative pressure fan, the driving roller 3 is a pair, the belt 11 is stretched by the pair of driving rollers 3, the negative pressure fan is placed between the pair of driving rollers 3, and is placed according to the position required to be adsorbed by negative pressure. In the embodiment, one of the implementation manners of the belt 11 is that the negative pressure hole 112 penetrates the belt 11, the negative pressure assembly 2 is arranged below the belt 11, and when the negative pressure hole 112 passes through the negative pressure assembly 2, negative pressure is formed in the corresponding waist hole 111. The negative pressure assembly 2 is arranged below the belt 11, when the negative pressure hole 112 passes above the negative pressure fan, the negative pressure assembly 2 can inhale air through the corresponding negative pressure hole 112, and the thin product is arranged above the belt 11, which essentially seals the waist hole 111, that is, the negative pressure assembly 2 only inhales the gas in the waist hole 111, that is, negative pressure is formed in the waist hole 111, a pressure difference is formed between the top of the thin product and the top of the belt 11, the thin product is pressed on the belt 11 by the pressure difference, and the product can be stably fixed on the belt 11 during conveying, so that the belt 11 conveying of the thin product can be realized, and the thin product does not need to be clamped during conveying, and the flatness of the thin product is not affected.

[0023] Another implementation manner of the belt 11 is that a cavity 113 is formed in the hollow part of the belt 11, the negative pressure hole 112 is communicated with the cavity 113, an air extraction hole 114 is arranged on the back surface of the belt 11 and is communicated with the cavity 113, the negative pressure assembly 2 is arranged below the belt 11, and when the air extraction hole 114 passes through the negative pressure assembly 2, negative pressure is formed in the corresponding waist hole 111. On the basis of the embodiment, the negative pressure assembly 2 can be arranged between the pair of conveying rollers, that is, the negative pressure hole 112 and the air extraction hole 114 are actually in a corresponding relationship, and on this basis, when the air extraction hole 114 is opposite to the negative pressure assembly 2, a negative pressure area can be formed. The thin product is pressed on the belt 11 by the pressure difference, the product can be stably fixed on the belt 11 during conveying, so that the belt 11 conveying of the thin product can be realized, and the thin product does not need to be clamped during conveying, and the flatness of the thin product is not affected.

[0024] Of course, the negative pressure assembly 2 can also be arranged in the driving roller 3, the inside of the driving roller 3 is hollow to form a containing cavity for containing the negative pressure assembly 2, a suction port 31 is arranged on the side wall of the containing cavity, the suction port 31 is communicated with the suction hole 114 when the belt 11 contacts the driving roller 3, the negative pressure assembly 2 is arranged in the containing cavity, and the containing cavity can be kept in a negative pressure state when being vacuumized. Specifically, the driving roller 3 is hollow, and a mounting frame 33 is rotationally connected in the driving roller 3 along the axial direction, the mounting frame 33 is used for fixing the negative pressure assembly 2, and the mounting frame 33 can be kept stable regardless of the rotation of the driving roller 3. Therefore, the negative pressure assembly 2 cannot rotate with the driving roller 3 in the whole rotation process of the driving roller 3, so that a stable negative pressure environment can be provided. Of course, the installation mode needs to open a ventilation hole at the end of the driving roller 3 to maintain the pressure difference between the inside and outside of the driving roller 3. Specifically, the mounting frame 33 can be hollow and form a channel for keeping the pressure difference between the inside and outside of the driving roller.

[0025] In the embodiment, a one-way valve 4 is arranged in the suction hole 114, and the one-way valve 4 is opened when the suction hole 114 is opposite to the suction port 31. Specifically, the one-way valve 4 is arranged in the suction hole 114, the one-way valve 4 includes a valve plate 41, one side of the valve plate 41 is rotationally connected in the suction hole 114, a torsional spring 42 is sleeved on the rotation shaft of the valve plate 41, the torsional spring 42 drives the valve plate 41 to be in a closed state, and the valve plate 41 is opened when the suction port 31 is opposite to the suction hole 114. In addition, the surface of the conveying roller forms a conveying protrusion 32, and the suction port 31 is arranged on the conveying protrusion 32. After the conveying protrusion 32 is inserted into the suction hole 114, the valve plate 41 can be pushed open, so that the negative pressure environment is realized, and the negative pressure is formed at the waist hole 111 to form an adsorption effect on the product. Therefore, the product can be stably fixed on the belt 11 during conveying, so that the belt 11 conveying of the thin product can be realized, and the thin product does not need to be clamped during conveying, so that the flatness of the thin product is not affected. When the corresponding suction hole 114 is not opposite to the conveying protrusion 32, the valve plate 41 is closed under the action of the torsional spring 42, and the negative pressure in the cavity 113 cannot drive the torsional spring 42 to deform, so that the suction hole 114 can be closed, the cavity 113 is closed, and the negative pressure effect is better.

[0026] Compared with the prior art, the negative pressure assembly 2 can be a negative pressure fan, the belt 11 is supported and driven to move by a pair of driving rollers 3, and when the thin flat product is placed on the belt 11, part of the waist hole 111 is covered. At this time, the negative pressure is formed at the waist hole 111 to form an adsorption effect on the product, so that the product can be stably fixed on the belt 11 during conveying, so that the belt 11 conveying of the thin product can be realized, and the thin product does not need to be clamped during conveying, so that the flatness of the thin product is not affected.

[0027] The above-mentioned embodiments are only preferred embodiments of the present application, and cannot be used to limit the scope of protection of the present application. Any non-essential changes and replacements made by those skilled in the art on the basis of the present application shall fall within the scope of protection of the present application.

Claims

1. A negative pressure conveyor belt, comprising a conveyor belt assembly and a negative pressure assembly, wherein the conveyor belt assembly is wound around a drive roller and driven to move by the drive roller, characterized in that: The conveyor belt assembly includes a belt with several waist holes on its front side. The waist holes are spaced apart along the length of the belt and are parallel to each other. A negative pressure hole is provided at the bottom of each waist hole. The negative pressure hole is used to communicate with the negative pressure component. The belt is wound around the drive roller and is driven to move by the conveyor roller.

2. The negative pressure conveyor belt according to claim 1, characterized in that: The negative pressure hole penetrates the belt, and the negative pressure component is located below the belt. When the negative pressure hole passes through the negative pressure component, negative pressure is formed in the corresponding waist hole.

3. The negative pressure conveyor belt according to claim 1, characterized in that: The belt has a hollow interior forming a cavity, and the negative pressure hole communicates with the cavity. An air extraction hole is opened on the back of the belt and communicates with the cavity. The negative pressure component is placed below the belt. When the air extraction hole passes through the negative pressure component, negative pressure is formed corresponding to the waist hole.

4. A negative pressure conveyor belt according to claim 3, characterized in that: The negative pressure component is disposed inside the drive roller. The drive roller is hollow to form a receiving cavity for accommodating the negative pressure component. An air extraction port is opened on the side wall of the receiving cavity. When the belt contacts the drive roller, the air extraction port communicates with the air extraction hole. The negative pressure component is disposed inside the receiving cavity.

5. A negative pressure conveyor belt according to claim 4, characterized in that: The air extraction hole is equipped with a one-way valve, which opens when the air extraction hole is opposite to the air extraction port.

6. A negative pressure conveyor belt according to claim 5, characterized in that: The one-way valve is located inside the air extraction port. The one-way valve includes a valve plate, one side of which is rotatably connected to the air extraction port. A torsion spring is sleeved on the rotating shaft of the valve plate. The torsion spring drives the valve plate to be in a closed state. When the air extraction port is opposite to the air extraction port, the valve plate is opened.

7. A negative pressure conveyor belt according to claim 6, characterized in that: The surface of the conveying roller has conveying protrusions, and the air extraction port is opened on the conveying protrusions.

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