A label processing and collecting device for cutting discs

Abstract

The present invention discloses a label processing and collecting device for cutting sheets, which improves the problem of stamping quality of cutting sheet stickers in the prior art. In the invention, the outlet of the punching machine is connected to the label conveying device through a sliding plate, and a label inner hole blowing device is provided above the middle of the label conveying device. The outlet of the label conveying device is connected to the finished product conveyor belt, and a baffle is provided on the outer side of the finished product conveyor belt. There is a finished product placement groove at the outlet of the finished product conveyor belt. The label conveying device contains two driving rollers, two rolling rollers, a plurality of parallel conveying belts, a motor and a frame that move relative to each other. The frame has two driving rollers, two rolling rollers and a motor. The label inner hole blowing device contains an air intake pipe, an air nozzle bracket and an air nozzle, wherein one end of the air intake pipe is connected to the air compressor and the other end is connected to the air nozzle. The air nozzles are spaced apart on the air nozzle bracket and are aligned with the gap in the middle of the conveyor belt. This technology prevents the compressed gas from causing impact and vibration to the air nozzle bracket and the air nozzle at the lower end.

Description

Technical Field

[0001] The invention relates to the field of manufacturing cutting blades, and in particular to a label processing and collecting device for cutting blades. Background Art

[0002] Cutting discs are commonly used consumable components in industrial production. Cutting discs belong to grinding wheels. They are thin sheets made of abrasives and binder resins for ordinary steel, stainless steel, metal and non-metallic materials. Glass fiber and resin are used as reinforced bonding materials. They have high tensile, impact and bending strength and are widely used in the production and cutting of ordinary steel, stainless steel, metal and non-metallic materials. Excellent materials and exquisite craftsmanship ensure high cutting efficiency and optimal economic effects for workpieces of different materials. Cutting discs are mainly divided into fiber resin cutting discs and diamond cutting discs according to their materials.

[0003] Since the labels on the sides of the cutting disc are easily scratched after long-term use, it is not conducive for manufacturers to promote their products through labels. Manufacturers with long cutting life and high efficiency pay special attention to this point and are working hard to develop a new label printing technology. Since the middle of the label needs to be punched to match the mounting hole in the middle of the cutting disc, the punching machine generally punches the strip of printed paper with continuous finished label patterns. After punching, some equipment will retain the stickers that have not fallen off at the inner hole. This is to prevent the equipment stickers from being transferred incompletely during the punching process, and then being punched in a superimposed manner after being leaked, causing the finished label to be interfered with by the stickers during the punching process. Finally, the stickers will be chaotically distributed and interfere with the punching, causing the punching quality of the finished label to be uncontrollable. Therefore, there is a special process to centrally remove the incompletely punched stickers. The common method is to blow them off with compressed air, but the travel speed of the semi-finished label, the airflow speed of the compressed air, and the contact method between the airflow and the sticker will bring different removal effects. Summary of the invention

[0004] The present invention overcomes the above problems and provides a label processing and collecting device for cutting sheets which has a reasonable structure and is easy to use.

[0005] The technical solution of the present invention is to provide a label processing and collecting device for cutting sheets with the following structure: it contains a punching machine, a sliding plate, a label conveying device, a label inner hole blowing-off device, a finished product conveying belt and a finished product return slot, wherein the outlet of the punching machine is connected to the label conveying device through the sliding plate, the label inner hole blowing-off device is provided above the middle of the label conveying device, the outlet of the label conveying device is connected to the finished product conveying belt, the outer side of the finished product conveying belt is provided with a baffle, and the outlet of the finished product conveying belt is provided with a finished product return slot, wherein the label conveying device contains two driving rollers, two rolling rollers, a plurality of parallel conveying belts, a motor and a frame that move relative to each other, the frame is provided with two driving rollers, two rolling rollers and a motor, wherein each driving roller is connected to a rolling roller through a belt, the outer circumferences of the conveying belts are close to each other, the driving rollers are connected to each other through gears, and one end of the driving roller is connected to the motor through a belt; the label inner hole blowing-off device contains an air intake pipe, an air nozzle bracket and an air nozzle, wherein one end of the air intake pipe is connected to the air compressor, and the other end is connected to the air nozzle, the air nozzles are distributed at intervals on the air nozzle bracket, and the air nozzles are aligned with the gap in the middle of the conveying belt.

[0006] Preferably, the contact surfaces of the conveyor belt and its matching driving roller and rolling roller are connected by parallel grooves, the cross-section of the groove is triangular or square, and rubber protrusions are provided on the outer side of the conveyor belt.

[0007] Preferably, the sliding plate is provided with a material gathering plate, a material dividing plate and a material baffle plate. The material gathering plate is located in the upper half of the sliding plate, and a convergent channel from high to low is formed by two opposite material gathering plates; the material dividing plate is located in the lower half of the sliding plate, and an extended end with a sharp protrusion is formed by two adjacent material dividing plates, and the sharp protrusion is located at the center line of the material gathering plate outlet; the sliding plate is located on both sides of the material dividing plate, and a convergent opening is formed between it and each side of the diversion plate.

[0008] Preferably, an intermittent air supply device is provided on the air nozzle bracket between the air inlet pipe and the air nozzle, which includes an air supply motor, a sealing plate, a rotating air inlet piston and an air outlet sleeve, wherein the air outlet sleeve is embedded in the cross-section inside the air nozzle bracket through the sealing plate, the air supply motor is connected to one end of the rotating air inlet piston through an axis, the rotating air inlet piston is sleeved in the air outlet sleeve, the rotating air inlet piston is provided with a strip air hole, the air outlet sleeve is provided with a strip air inlet nozzle and a strip air outlet nozzle, and the strip air hole discontinuity line connects the strip air inlet nozzle and the strip air outlet nozzle.

[0009] Preferably, the rotating air intake piston is provided with a strip-shaped air hole with an hourglass-shaped cross section.

[0010] Preferably, the strip-shaped air holes are provided with airflow buffer grooves of different lengths.

[0011] Preferably, the finished product storage tank is in the shape of a square cylinder, wherein sampling ports are relatively opened on the side walls.

[0012] Preferably, a waste collection trough is provided below the label conveying device.

[0013] Compared with the prior art, the label processing and collecting device for cutting sheets of the present invention has the following advantages: intermittent airflow will be ejected from the air nozzle above the conveyor belt. During the forward movement of the conveyor belt, the contact area between the intermittent airflow and the stickers that have not been completely blown off will gradually increase and then decrease. Therefore, it is necessary to blow the stickers off near the time when the contact area between the airflow and the stickers is the largest. If the intermittent airflow is large, it is easy to collide with and rebound with the stickers and blow them off.

[0014] Compared with the continuous and uninterrupted compressed air flow, intermittent air supply can avoid the phenomenon that the continuous gas blows the semi-finished labels clamped in the conveyor belt crooked or blows them off. Continuous air blowing will cause the stickers in the middle of the semi-finished labels that have not fallen off to sink and hang in advance, and they can only be removed by the friction between the airflow and the stickers. In this process, it is inevitable that there will be stickers that have not been blown off. Intermittent line air blowing can make the stickers rebound appropriately when there is no airflow passing through. The airflow of a certain frequency and the rebound vibration of the stickers with a certain rhythm can increase the impact between the airflow and the stickers. The airflow passing through the stickers that have not sunk to the lowest point will produce better friction and driving force, causing the stickers to be blown off in a short time.

[0015] The cross-section of the airflow passage changes slowly when the airflow channel is opened and closed. When the airflow channel is opened, it gradually increases from a small size to prevent the sudden outflow of compressed gas from causing impact and vibration on the nozzle bracket and the nozzle at the lower end, thereby causing greater noise and vibration damage to the equipment. The vibrating nozzle may also result in the disadvantage of low airflow accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a side structural schematic diagram of the present invention;

[0017] Figure 2 It is a schematic diagram of the top view of the structure of the present invention;

[0018] Figure 3 It is a side view structural schematic diagram of the conveyor belt in the present invention;

[0019] Figure 4 This is one of the side structural schematic diagrams of the finished product placement tank in the present invention;

[0020] Figure 5 This is the second schematic diagram of the side view structure of the finished product placement tank in the present invention;

[0021] Figure 6 It is a schematic structural diagram of the label inner hole blowing-off device in the present invention;

[0022] Figure 7 It is a cross-sectional structural schematic diagram of the intermittent air supply device in the present invention;

[0023] Figure 8 It is a side structural schematic diagram of the intermittent air supply device in the present invention;

[0024] Fig. 9 It is a side view structural schematic diagram of a rotating air intake piston in the intermittent air supply device of the present invention;

[0025] Fig.10 It is a cross-sectional structural schematic diagram of the positional relationship between the rotating air inlet piston and the air outlet sleeve in the intermittent air supply device of the present invention;

[0026] Fig.11 It is a schematic diagram of the state of the semi-finished label in the present invention when the middle sticker is removed;

[0027] In the accompanying drawings, number 1 is a material baffle plate, 2 is a finished product conveyor belt, 3 is a frame, 4 is a conveyor belt, 5 is an air nozzle bracket, 6 is a driving roller, 7 is a rolling roller, 8 is a sliding plate, 9 is a punching machine, 10 is a finished product label, 11 is a finished product storage tank, 12 is a waste collection tank, 13 is a semi-finished product label, 14 is a material gathering plate, 15 is a material dividing plate, 15' is a material baffle plate, 16 is a groove, 17 is a rubber protrusion, 18 is a gear, 19 is a sampling port, 20 is an air nozzle, 21 is an air flow buffer tank, 22 is an air supply motor, 23 is an air outlet sleeve, 24 is a strip air outlet nozzle, 25 is a rotating air inlet piston, 26 is a strip air hole, 27 is a baffle, and 28 is a sticker. DETAILED DESCRIPTION

[0028] The following is a further description of the label processing and collecting device for cutting sheets of the present invention in conjunction with the accompanying drawings and specific embodiments: As shown in the figure, this embodiment includes a punching machine 9, a sliding plate 8, a label conveying device, a label inner hole blowing device, a finished product conveying belt 2 and a finished product return slot 11, wherein the outlet of the punching machine 9 is connected to the label conveying device through the sliding plate 8, a label inner hole blowing device is provided above the middle of the label conveying device, the outlet of the label conveying device is connected to the finished product conveying belt 2, a baffle 1 is provided on the outer side of the finished product conveying belt 2, and a finished product return slot 11 is provided at the outlet of the finished product conveying belt 2, wherein the label conveying device includes two driving devices for relative movement. Roller 6, two rolling rollers 7, multiple parallel conveyor belts 4, motor and frame 3, frame 3 is provided with two driving rollers 6, two rolling rollers 7 and motor, wherein each driving roller 6 is connected to a rolling roller 7 through a belt, the outer circumferences of the conveyor belt 4 are close to each other, the driving rollers 6 are connected to each other through gears, and one end of the driving roller 6 is connected to the motor through a belt; the label inner hole blowing device contains an air intake pipe, an air nozzle bracket 5 and an air nozzle 20, wherein one end of the air intake pipe is connected to the air compressor, and the other end is connected to the air nozzle 20, the air nozzle 20 is distributed at intervals on the air nozzle bracket 5, and the air nozzle 20 is aligned with the gap in the middle of the conveyor belt 4.

[0029] The baffle plate 15' can prevent the conveyor belt 4 from pushing the blown finished product labels 10 too far, causing them to fly out of the finished product conveyor belt 2 and unable to be directly transported to the finished product return slot 11. The finished product conveyor belt 2 transports the processed finished product labels 10 to the finished product return slot 11 at one side of its exit. The finished product return slot 11 can stack the finished product labels 10 vertically and collect them in order, and a sampling port 19 is provided on it to facilitate people to take out the thick finished product labels 10 stacked in the finished product return slot 11 by hand, and at the same time ensure that the finished product labels 10 can discharge the air between two finished product labels 10 during the falling process, so that they can be stacked together smoothly and quickly.

[0030] The label conveying device comprises two sets of upper and lower driving rollers 6, rolling rollers 7 and conveying belts 4, wherein a conveying belt 4 is arranged between the driving rollers 6 and the rolling rollers 7, and the upper and lower conveying belts 4 move relative to each other, and a semi-finished label 13 is sandwiched in the middle and sent under a plurality of air nozzles 20, and the unfallen stickers 28 in the middle of the semi-finished label 13 are removed by intermittently ejected airflow.

[0031] The nozzle support 5 is provided with a plurality of nozzles 20. The nozzle support 5 is a hollow tube, and an air path is provided inside the nozzle 20. The punching machine 9 punches the strip of printing paper printed with the continuous finished label 10, and the semi-finished label 13 with the inner hole not falling off is formed after punching. The semi-finished label 13 falls into the label inner hole blowing-off device through the sliding plate 8 to remove the inner hole label paper 28. The gear can ensure that the two driving rollers 6 move at the same speed relative to each other, so as to ensure that the upper and lower conveying belts 4 clamp the semi-finished label 13 through the nozzle 20 to remove the inner hole in the middle.

[0032] The contact surfaces of the conveyor belt 4 and its matching driving roller 6 and rolling roller 7 are connected through parallel grooves 16 , and the cross-section of the groove 16 is triangular or square. Rubber protrusions 17 are provided on the outer side of the conveyor belt 4 .

[0033] The conveyor belt 4 clamps and conveys the semi-finished label 13 that falls from the inclined sliding plate 8. The conveyor belt 4 only clamps the two sides of the semi-finished label 13, leaving the unfallen sticker 28 in the middle inner hole to move along the conveying path of the conveyor belt 4. After being conveyed, the connection points between the unfallen sticker 28 and the semi-finished label 13 are inconsistent when clamped between the conveyor belt 4. Therefore, the inclined airflow at a fixed angle cannot be used to blow off the sticker 28. The inclined airflow will cause inaccurate airflow force. The vertical airflow will have a better effect. The groove 16 can stably fix the conveyor belt 4 to prevent it from running off and causing the finished label 10 to be unable to be accurately fixed. The outer surface of the conveyor belt 4 is provided with a rubber protrusion 17 that increases friction. There will be intermittent airflow ejected from the air nozzle 20 above the conveyor belt 4. During the forward movement of the conveyor belt 4, the contact area between the intermittent airflow and the stickers 28 that have not been completely blown off will gradually increase and then decrease. Therefore, it is necessary to blow the stickers 28 off near the time when the contact area between the airflow and the stickers 28 is the largest. The intermittent airflow easily produces the moment when the contact area with the stickers 28 reaches the maximum many times, and it is easy for the stickers 28 to be blown off by mutual collision and rebound.

[0034] The sliding plate 8 is provided with a gathering plate 14, a dividing plate 15 and a baffle plate 15'. The gathering plate 14 is located in the upper half of the sliding plate 8, and a convergence channel from high to low is formed by two opposite gathering plates 14; the dividing plate 15 is located in the lower half of the sliding plate 8, and an extended end with a sharp protrusion is formed by two adjacent dividing plates 15, and the sharp protrusion is located at the center line of the outlet of the gathering plate 14; the sliding plate 8 is located on both sides of the dividing plate 15, and a convergence opening is formed between it and each side of the diversion plate.

[0035] The waste collection tank 12 is one or more collection tanks located under the machine, which can collect the inner holes of the blown-off semi-finished labels 13 and transfer them conveniently. The middle part of the semi-finished label 13 contains the sticker 28 that has not fallen off the inner hole. The inner hole is slightly implicated by the sticker 28. The gathering plate 14 can gather the scattered semi-finished labels 13, so that they can go out from the outlet at the specified position and accurately enter the part to be processed in the next process.

[0036] The material dividing plate 15 can randomly distribute the semi-finished product labels 13 to one side of its two sides with a probability of 50%. If one side is more deflected and there is not enough time to enter the subsequent process, it will be deflected to the less deflected side. The material blocking plate 15' can prevent the semi-finished product labels 13 from sliding to the ground during the distribution of the processing position on the sliding plate 8.

[0037] An intermittent air supply device is provided on the air nozzle bracket 5 between the air inlet pipe and the air nozzle 20, which includes an air supply motor 22, a sealing plate 27, a rotating air inlet piston 25 and an air outlet sleeve 23, wherein the air outlet sleeve 23 is embedded in the cross-section inside the air nozzle bracket 5 through the sealing plate 27, the air supply motor 22 is connected to one end of the rotating air inlet piston 25 through an axis, the rotating air inlet piston 25 is sleeved in the air outlet sleeve 23, the rotating air inlet piston 25 is provided with a strip air hole 26, the air outlet sleeve 23 is provided with a strip air inlet nozzle and a strip air outlet nozzle 24, and the strip air hole 26 is discontinuously connected to the strip air inlet nozzle and the strip air outlet nozzle 24.

[0038] The air supply motor 22 can drive the rotating air inlet piston 25 to rotate at a set speed in the air outlet sleeve 23. During the rotation process, the intermittent air supply device is intermittently connected in the air nozzle bracket 5 through the intermittent fit between the strip air holes 26 provided thereon and the strip air outlet nozzle 24 on the air outlet sleeve 23, and intermittent compressed air is blown out to avoid the phenomenon that the finished label 10 is blown unevenly or even blown off after direct blowing, and the inner hole sticker 28 in the middle of the semi-finished label 13 may not be easily blown off. There is lubricating grease between the outer surface of the rotating air inlet piston 25 and the inner surface of the air outlet sleeve 23 for lubrication and increased air tightness.

[0039] The sealing plate 27 is an air blocking plate connecting the air nozzle bracket 5 and the outer wall of the air outlet sleeve 23. Its function is to fix the air outlet sleeve 23 inside the air nozzle bracket 5 and at the same time block the gas inside the air nozzle bracket 5 so that the gas can only flow through the strip air inlet nozzle and the strip air outlet nozzle 24 set on the air outlet sleeve 23.

[0040] When closing, the air flow channel gradually becomes smaller, so that the compressed gas that is suddenly cut off will not cause impact and vibration to the nozzle bracket 5, resulting in a large noise.

[0041] Since the transmission speed of the semi-finished label 13 in the conveyor belt 4 and the speed and efficiency of the compressed air flow to remove the sticker 28 that has not fallen off in the middle of the semi-finished label 13 determine the working efficiency of the entire device, the speed and efficiency of removing the sticker 28 can further limit or increase the transmission speed in the conveyor belt 4. Therefore, the speed and efficiency of removing the sticker 28 are the core technical issues and difficulties to be improved in this solution.

[0042] Compared with the continuous and uninterrupted compressed air flow, the intermittent air supply can avoid the phenomenon that the continuous gas blows the semi-finished label 13 clamped in the conveyor belt 4 crooked or blows it off. Continuous air blowing will cause the sticker 28 that has not fallen off in the middle of the semi-finished label 13 to sink and hang in advance, and it can only rely on the friction between the airflow and the sticker 28 to fall off. In this process, it is inevitable that there will be stickers 28 that have not been blown off. Intermittent line air blowing can make the sticker 28 rebound appropriately when there is no airflow passing through. The airflow of a certain frequency and the rebound vibration of the sticker 28 of a certain rhythm can increase the impact between the airflow and the sticker 28. The airflow passing through the sticker 28 that has not sunk to the lowest point will produce better friction and driving force, prompting the sticker 28 to be blown off in a short time.

[0043] Since continuous airflow can easily blow the inner hole sticker 28 into a direction parallel to the airflow, thereby reducing the friction between the airflow and the inner hole sticker 28, some of the inner hole stickers 28 cannot be blown away by the airflow. In subsequent processes, it takes time to take care of them and manually remove the inner hole stickers 28.

[0044] The rotating air inlet piston 25 is provided with a strip-shaped air hole 26 with an hourglass-shaped cross section. This structure can play a good role as a pipeline passage in dealing with the moment of opening and closing of the compressed air flow. The narrow air passage in the passage can reduce the delay caused by the air flow filling the space in the strip-shaped air hole 26. The wider opening can better deal with the vibration caused by the sudden change of the compressed air flow.

[0045] The strip-shaped air hole 26 is provided with air flow buffer grooves 21 of different lengths. The air flow buffer grooves 21 can be turned on and off at the moment of gas when the motor drives the rotating intake piston 25 to rotate. Through the different designs of its depth and length, the total time, flow velocity and mass inertia of the air flow through the strip-shaped air hole 26 can be improved. The total time of the air flow through the strip-shaped air hole 26 with the air flow buffer grooves 21 is longer than that of the strip-shaped air hole 26 without the air flow buffer grooves 21, so that more air flow can be transported out. Since the air flow passes through the air flow buffer grooves 21 of different depths and lengths, the time of the air flow through the strip-shaped air hole 26 is long, and at the beginning and the end of the strip-shaped air hole 26, the cross-section of the air flow channel when it is opened and closed changes slowly. When the air flow channel is opened, it gradually increases from small to large, so that the compressed gas that suddenly gushes out will not cause impact and vibration to the nozzle bracket 5 and the nozzle 20 at the lower end, forming a large noise and vibration damage to the equipment. The vibrating nozzle may also have the disadvantage of low accuracy of the air flow.

[0046] The finished product storage tank 11 is a square cylinder, wherein the side wall is provided with a sampling port 19, which is convenient for people to take out the neatly stacked finished product labels 10 by hand. The finished product labels 10 contained therein can directly enter the next process, and the finished product labels 10 are pasted on the cutting sheet.

[0047] A waste collection trough 12 is provided below the label conveying device. The waste collection trough 12 can be assembled in multiple pieces, which is convenient for people to clean up the work site at the end and collect the scraps and residual products one by one.

Claims

1. A label processing and collecting device for cutting discs, characterized in that: It contains a punching machine, a sliding plate, a label conveying device, a label inner hole blowing-off device, a finished product conveying belt and a finished product return slot, wherein the outlet of the punching machine is connected to the label conveying device through the sliding plate, a label inner hole blowing-off device is provided above the middle of the label conveying device, the outlet of the label conveying device is connected to the finished product conveying belt, a baffle is provided on the outer side of the finished product conveying belt, and a finished product return slot is provided at the outlet of the finished product conveying belt, wherein the label conveying device contains two driving rollers, two rolling rollers, a plurality of parallel conveying belts, a motor and a frame that move relative to each other, the frame is provided with two driving rollers, two rolling rollers and a motor, wherein each driving roller is connected to a rolling roller through a belt, the outer circumferences of the conveying belts are close to each other, the driving rollers are connected to each other through gears, and one end of the driving roller is connected to the motor through a belt; the label inner hole blowing-off device contains an air inlet pipe, an air nozzle bracket and an air nozzle, wherein one end of the air inlet pipe is connected to the air compressor, and the other end is connected to the air nozzle, the air nozzles are distributed at intervals on the air nozzle bracket, and the air nozzles are aligned with the gap in the middle of the conveying belt.

2. The cutting sheet label processing and collecting device according to claim 1, characterized in that: The contact surfaces of the conveyor belt and its matching driving roller and rolling roller are connected through parallel grooves, the cross section of the groove is triangular or square, and rubber protrusions are arranged on the outer side of the conveyor belt.

3. The cutting sheet label processing and collecting device according to claim 1, characterized in that: The sliding plate is provided with a material gathering plate, a material dividing plate and a material baffle plate. The material gathering plate is located in the upper half of the sliding plate, and a convergence channel from high to low is formed by two opposite material gathering plates; the material dividing plate is located in the lower half of the sliding plate, and an extended end with a sharp protrusion is formed by two adjacent material dividing plates, and the sharp protrusion is located at the center line of the material gathering plate outlet; the sliding plate is located on both sides of the material dividing plate, and a convergence opening is formed between it and each side of the diversion plate.

4. The cutting sheet label processing and collecting device according to claim 1, characterized in that: An intermittent air supply device is provided on the air nozzle bracket between the air inlet pipe and the air nozzle, which includes an air supply motor, a baffle, a rotating air inlet piston and an air outlet sleeve, wherein the air outlet sleeve is embedded in the cross-section inside the air nozzle bracket through the baffle, the air supply motor is connected to one end of the rotating air inlet piston through a shaft, the rotating air inlet piston is sleeved in the air outlet sleeve, the rotating air inlet piston is provided with a strip air hole, the air outlet sleeve is provided with a strip air inlet nozzle and a strip air outlet nozzle, and the strip air hole discontinuous line connects the strip air inlet nozzle and the strip air outlet nozzle.

5. The cutting sheet label processing and collecting device according to claim 4, characterized in that: The rotating air intake piston is provided with a strip-shaped air hole with an hourglass-shaped cross section.

6. The cutting sheet label processing and collecting device according to claim 5, characterized in that: The strip-shaped air holes are provided with air flow buffer grooves of different lengths.

7. The cutting sheet label processing and collecting device according to claim 1, characterized in that: The finished product storage tank is in the shape of a square cylinder, wherein sampling ports are relatively opened on the side walls.

8. The cutting sheet label processing and collecting device according to claim 1, characterized in that: A waste collection trough is provided below the label conveying device.

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