A quick-locking automatic tray-loading air shaft

Abstract

This invention discloses a quick-locking automatic tray-loading air shaft, specifically relating to the field of air shaft technology. The device includes a shaft body, and the surface of the moving mechanism is provided with a fixing mechanism to prevent the paper tube from slipping off due to gravity or shaking before inflation. One end of the shaft body is provided with a cleaning mechanism for cleaning the paper tube. Through the fixing mechanism, and in conjunction with the wedge block and connecting frame in the moving mechanism, the axial movement of pushing the paper tube in during tray loading is converted into the radial lifting of the fixing frame. When the paper tube is pushed in, the slider drives the connecting block and the wedge block to move. The wedge block drives the connecting frame to move upward through the inclined groove, thereby causing multiple sets of rollers on the positioning block to abut against the inner wall of the paper tube. This process fully utilizes the mechanical energy of the tray loading action itself, achieving pre-positioning and clamping of the paper tube before the air bladder is inflated, eliminating the need for the operator to manually straighten the paper tube, and completely solving the problem of paper tube slippage caused by the operator releasing the inflation switch, shaft tilting, or equipment vibration.

Description

Technical Field

[0001] This invention relates to the field of air shaft technology, and more specifically, to a quick-locking automatic tray-loading air shaft. Background Technology

[0002] An air shaft is a type of winding shaft widely used in roll material processing equipment such as slitting machines, rewinding machines, and coating machines. Its working principle involves filling the air chamber inside the shaft with compressed air, which pushes the expansion key or block to expand radially, thereby clamping the paper tube or plastic tube sleeved outside the shaft and achieving the winding of the roll material.

[0003] However, during storage and transportation, the inner wall of the paper tube is easily contaminated with dust, paper scraps, glue residue, and other foreign matter. Currently, the air shaft relies entirely on manual cleaning or is not cleaned at all before loading onto the reel. When the expansion key is directly pressed against the inner wall of the paper tube with foreign matter attached, uneven contact between the expansion key and the inner wall of the paper tube occurs, resulting in a significant decrease in friction. This makes it easy to slip during high-speed winding, and the foreign matter is pressed into the inner wall of the paper tube, causing paper tube deformation or stress concentration under winding tension, ultimately forming indentations on the surface of the roll material, affecting the quality of the finished product. Furthermore, during the reeling stage, after the operator inserts the paper tube into the air shaft, there is inevitably an installation gap between the paper tube and the shaft. At this time, the air bladder is not yet inflated, and the paper tube is only held in position on the shaft by gravity or manual support. When the operator releases the inflation switch, or when the shaft is in a horizontal / tilted position, or when the equipment vibrates, the paper tube is very likely to slip off the shaft, causing production interruptions or even safety hazards.

[0004] Therefore, a fast-locking automatic tray-loading air shaft is proposed to address the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a fast-locking automatic tray-loading air shaft.

[0006] The present invention provides a quick-locking automatic tray-loading air shaft with the following technical solution: A quick-locking automatic tray-loading air shaft includes a shaft body, one end of which is fixedly connected to a connecting pipe. The shaft body has an expansion mechanism for locking paper tubes inside, a moving mechanism inside, and a fixing mechanism on the surface of the moving mechanism to prevent the paper tubes from slipping off due to gravity or shaking before inflation. One end of the shaft body has a cleaning mechanism for cleaning the paper tubes.

[0007] Preferably, the expansion mechanism includes an air inlet, an air supply outlet, a connecting groove, a fixing block, and an air bladder, with an air inlet at one end of the connecting pipe.

[0008] Preferably, the shaft body has multiple sets of air supply ports inside, and multiple sets of connecting grooves are formed on the surface of the shaft body. The connecting grooves are provided with two sets of fixing blocks, and the fixing blocks are provided with airbags inside.

[0009] Preferably, the surface of the airbag is provided with multiple sets of key strips, and the airbag is made of high-strength rubber material.

[0010] Preferably, the moving mechanism includes a slide groove, a groove, a screw, a connecting block, a connecting plate, a wedge block, a slider, a connecting frame, a slant, a sensor, and a first spring. The surface of the shaft has multiple sets of slide grooves and multiple sets of grooves. The shaft is rotatably connected to a screw. The surface of the screw is provided with a connecting block and a connecting plate. A ball screw drive is formed between the screw, the connecting block, and the connecting plate.

[0011] Preferably, a connecting plate is fixedly connected to one end of the connecting block, multiple sets of inclined wedges are fixedly connected to the surface of the connecting block, multiple sets of sliders are fixedly connected to the surface of the connecting plate, the inner wall of the slide groove cooperates with the sliders, a connecting frame is slidably connected to the surface of the inclined wedge, an inclined groove is opened inside the connecting frame, the outer wall of the inclined wedge cooperates with the inner wall of the inclined groove, a sensor is provided at one end of the inner wall of the slide groove, a first spring is sleeved on the surface of one end of the screw, a shaft is fixedly connected to one end of the first spring, and a connecting plate is fixedly connected to the other end.

[0012] Preferably, the fixing mechanism includes a fixing frame, a limiting block, a positioning block, rollers, and a second spring. The inner walls of multiple sets of grooves are slidably connected to the fixing frame. The bottom of the fixing frame is fixedly connected to the connecting frame. The inner wall of the fixing frame is slidably connected to the limiting block. The surface of the limiting block is fixedly connected to the positioning block. Multiple sets of rollers are rotatably connected inside the positioning block. Multiple sets of second springs are provided inside the fixing frame. One end of the second spring is fixedly connected to the limiting block.

[0013] Preferably, the cleaning mechanism includes an annular groove, an annular block, a connecting sleeve, a fixing groove, a connecting rod, and a fixing plate. An annular groove is provided at one end of the shaft. An annular block is slidably connected to the inner wall of the annular groove. A connecting sleeve is fixedly connected to the surface of the annular block. The interior of the connecting sleeve is fixedly connected to one end of the screw.

[0014] Preferably, the surface of the connecting sleeve has multiple sets of fixing grooves, the inner walls of the multiple sets of fixing grooves are rotatably connected to connecting rods, the surface of the connecting rods is fixedly connected to fixing plates, and the surface of the fixing plates is provided with multiple sets of friction blocks.

[0015] Preferably, a conical block is fixedly connected to the surface of the connecting sleeve, and multiple sets of ball bearings are rotatably connected inside the conical block.

[0016] The technical effects and advantages of this invention are as follows: Compared with existing technologies, this quick-locking automatic tray-loading air shaft, through a fixed mechanism and in conjunction with the wedge block and connecting frame in the moving mechanism, transforms the axial motion of pushing the paper tube in during tray loading into the radial lifting of the fixed frame. When the paper tube is pushed in, the slider drives the connecting block and the wedge block to move. The wedge block drives the connecting frame to move upward through the inclined groove, thereby causing multiple sets of rollers on the positioning block to abut against the inner wall of the paper tube. This process fully utilizes the mechanical energy of the tray loading action itself, achieving the pre-positioning and clamping of the paper tube before the air bladder is inflated. There is no need for the operator to manually straighten the paper tube, completely solving the problem of paper tube slippage caused by the operator releasing the inflation switch, shaft tilting, or equipment vibration.

[0017] Compared to existing technologies, this rapid-locking automatic tray-loading air-expansion shaft, through a cleaning mechanism, utilizes the pushing action of the paper tube during tray loading to drive the connecting sleeve to rotate via a ball screw drive pair. This causes the fixing plate to move out of the fixing groove and continuously rub against the inner wall of the paper tube. This structure automatically cleans the inner wall of the paper tube during the tray loading process, removing dust, paper scraps, glue residue, and other foreign matter adhering during storage and transportation. This increases the friction of the inner wall of the paper tube, ensuring uniform contact and reliable locking after the expansion key expands, effectively preventing slippage during high-speed winding. Furthermore, it eliminates the root cause of localized deformation and stress concentration in the paper tube due to foreign matter being pressed into the inner wall by the expansion key, thus preventing indentations on the roll surface and ensuring finished product quality. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the mating structure of the shaft and connecting pipe of the present invention; Figure 3 This is a schematic diagram of the expansion mechanism of the present invention; Figure 4 This is a schematic diagram of the groove and slider mating structure of the present invention; Figure 5 This is a schematic diagram of the structure of the fixing frame and the limiting block of the present invention. Figure 6 This is a schematic diagram of the fixing mechanism of the present invention; Figure 7 This is a schematic diagram of the structure of the moving mechanism of the present invention; Figure 8 This is a schematic diagram of the screw and connecting block mating structure of the present invention; Figure 9 This is a schematic diagram of the connection frame and inclined groove of the present invention. Figure 10 This is a schematic diagram of the structure of the groove and sensor of the present invention. Figure 11 This is a schematic diagram of the structure of the conical block and the ball bearing in this invention. Figure 12 This is a schematic diagram of the cleaning mechanism of the present invention; Figure 13 This is a schematic diagram of the structure of the annular groove and the annular block of the present invention.

[0019] The attached figures are labeled as follows: 1. Shaft; 2. Connecting pipe; 3. Expansion mechanism; 301. Air inlet; 302. Air supply port; 303. Connecting groove; 304. Fixing block; 305. Airbag; 4. Moving mechanism; 401. Slide groove; 402. Groove; 403. Screw; 404. Connecting block; 405. Connecting plate; 406. Wedge block; 407. Slider; 408. Connecting frame; 409. Inclined groove; 410. Sensor; 411. First spring; 5. Fixing mechanism; 501. Fixing frame; 502. Limiting block; 503. Positioning block; 504. Roller; 505. Second spring; 6. Cleaning mechanism; 601. Annular groove; 602. Annular block; 603. Connecting sleeve; 604. Fixing groove; 605. Connecting rod; 606. Fixing plate; 7. Conical block; 8. Ball bearing; 9. Key bar. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example 1 like Figures 1 to 13 The diagram shows a quick-locking automatic tray-loading air shaft, including a shaft body 1. One end of the shaft body 1 is fixedly connected to a connecting pipe 2. The shaft body 1 has an expansion mechanism 3 for locking the paper tube inside, and a moving mechanism 4 inside. The surface of the moving mechanism 4 is provided with a fixing mechanism 5 to prevent the paper tube from slipping off due to gravity or shaking before inflation, so that the paper tube will not slip off due to gravity or shaking before the air shaft is inflated. One end of the shaft body 1 is provided with a cleaning mechanism 6 for cleaning the paper tube, which can clean the inner wall of one end of the paper tube to improve the friction of the inner wall of the paper tube.

[0022] In a preferred embodiment, the expansion mechanism 3 includes an air inlet 301, an air supply port 302, a connecting groove 303, a fixing block 304, and an air bladder 305. One end of the connecting pipe 2 is provided with an air inlet 301. One end of the connecting pipe 2 is connected to an air nozzle so that air can be supplied to the air inlet 301 through the air nozzle.

[0023] In a preferred embodiment, the shaft body 1 has multiple sets of air supply ports 302 inside, and multiple sets of connecting grooves 303 on the surface of the shaft body 1. The connecting grooves 303 are provided with two sets of fixing blocks 304 inside, and the fixing blocks 304 are provided with air bladders 305 inside. Compressed air is sent into the connecting grooves 303 through the air inlet 301 and the air supply port 302 via the air nozzle. The air will cause the air bladder 305 to expand and push the key bar 9 to expand radially and tighten evenly, so as to achieve rapid locking of the paper tube core tube. When the air is released, the air bladder 305 contracts and the key bar 9 retracts, so that the paper tube core tube can be easily removed.

[0024] As a preferred embodiment, the surface of the airbag 305 is provided with multiple sets of key strips 9, and the airbag 305 is made of high-strength rubber material, so that the airbag 305 can withstand high pressure and resist aging.

[0025] In a preferred embodiment, the moving mechanism 4 includes a slide groove 401, a groove 402, a screw 403, a connecting block 404, a connecting plate 405, a wedge block 406, a slider 407, a connecting frame 408, a sloping groove 409, a sensor 410, and a first spring 411. Multiple sets of slide grooves 401 and multiple sets of grooves 402 are formed on the surface of the shaft 1. The screw 403 is rotatably connected inside the shaft 1. The surface of the screw 403 is provided with a connecting block 404 and a connecting plate 405. A ball screw drive is formed between the screw 403, the connecting block 404, and the connecting plate 405. When the connecting block 404 and the connecting plate 405 move left and right, the movement is converted into the rotational movement of the screw 403 through the ball screw drive pair between them and the screw 403.

[0026] In a preferred embodiment, a connecting plate 405 is fixedly connected to one end of the connecting block 404. Multiple sets of inclined wedges 406 are fixedly connected to the surface of the connecting block 404. Multiple sets of sliders 407 are fixedly connected to the surface of the connecting plate 405. The inner wall of the slide groove 401 cooperates with the sliders 407, allowing the sliders 407 to slide within the slide groove 401. A connecting frame 408 is slidably connected to the surface of the inclined wedges 406. An inclined groove 409 is formed inside the connecting frame 408. The outer wall of the inclined wedges 406 cooperates with the inner wall of the inclined groove 409. When… When the connecting block 404 drives the wedge block 406 to move backward, the inclined groove 409 moves upward and the connecting block 404 that cooperates with it also moves upward, thereby driving the fixed frame 501 to move upward in the groove 402. A sensor 410 is provided at one end of the inner wall of the sliding groove 401. When the slider 407 touches the sensor 410, the sensor 410 can control the air nozzle to open. A first spring 411 is sleeved on one end of the screw 403. One end of the first spring 411 is fixedly connected to the shaft 1, and the other end is fixedly connected to the connecting plate 405.

[0027] In a preferred embodiment, the fixing mechanism 5 includes a fixing frame 501, a limiting block 502, a positioning block 503, rollers 504, and second springs 505. The fixing frame 501 is slidably connected to the inner walls of multiple sets of grooves 402. The bottom of the fixing frame 501 is fixedly connected to the connecting frame 408. The limiting block 502 is slidably connected to the inner wall of the fixing frame 501. The positioning block 503 is fixedly connected to the surface of the limiting block 502. Multiple sets of rollers 504 are rotatably connected inside the positioning block 503. Multiple sets of second springs 505 are provided inside the fixing frame 501. 5. One end of the second spring 505 is fixedly connected to the limiting block 502. When the connecting frame 408 drives the fixed frame 501 to move upward, the fixed frame 501 drives the limiting block 502 and the positioning block 503 to move upward together, so that the roller 504 on the positioning block 503 abuts against the inner wall of the paper tube. In this way, the paper tube will not slip due to gravity or shaking before the air shaft is inflated. At the same time, multiple sets of rollers 504 also facilitate the movement of the paper tube on the shaft 1. During this process, the second spring 505 plays a buffering role, which can prevent the positioning block 503 from damaging the inner wall of the paper tube when it continues to move upward.

[0028] In a preferred embodiment, the cleaning mechanism 6 includes an annular groove 601, an annular block 602, a connecting sleeve 603, a fixing groove 604, a connecting rod 605, and a fixing plate 606. An annular groove 601 is provided at one end of the shaft 1. An annular block 602 is slidably connected to the inner wall of the annular groove 601. A connecting sleeve 603 is fixedly connected to the surface of the annular block 602. The interior of the connecting sleeve 603 is fixedly connected to one end of the screw 403.

[0029] In a preferred embodiment, the surface of the connecting sleeve 603 is provided with multiple sets of fixing grooves 604. The inner walls of the multiple sets of fixing grooves 604 are rotatably connected to connecting rods 605. The surface of the connecting rods 605 is fixedly connected to fixing plates 606. The surface of the fixing plates 606 is provided with multiple sets of friction blocks. When the connecting blocks 404 and the connecting plates 405 move backward, the ball screw transmission pair between them and the screw 403 is converted into the rotational motion of the screw 403, causing the screw 403 to drive the connecting sleeve 603 to rotate. When the connecting sleeve 603 rotates, the fixing plates 606 move out of the fixing grooves 604 through the connecting rods 605, so that the fixing plates 606 continuously rub against the inner wall of the paper tube to clean the inner wall of the paper tube, thereby increasing the friction of the inner wall of the paper tube, making it less prone to slippage during high-speed winding, and preventing foreign objects from being pressed into the inner wall of the paper tube, thus preventing quality problems such as paper tube deformation, stress concentration, and indentations on the surface of the roll material.

[0030] In a preferred embodiment, a conical block 7 is fixedly connected to the surface of the connecting sleeve 603. Multiple sets of ball bearings 8 are rotatably connected inside the conical block 7. The conical block 7 at one end of the air shaft is used to automatically guide the core of the paper tube to be aligned. The ball bearings 8 reduce the pushing resistance and prevent scratches on the inner wall through rolling friction. The combination of the two can achieve fast, smooth and automatic tray loading without manual intervention.

[0031] The working process of this invention is as follows: The conical block 7 automatically guides the core of the paper tube to center, while the ball bearing 8 reduces the pushing resistance and prevents scratches on the inner wall through rolling friction, allowing the paper tube to be fitted onto the shaft 1. At this time, as the paper tube moves backward, the slider 407 slides in the groove 401, causing the slider 407 to drive the connecting block 404 to move backward via the connecting plate 405. The connecting plate 405 also compresses the first spring 411. When the connecting block 404 drives the wedge block 406 to move backward, the inclined groove 409 moves upward, and the connecting block 404 that cooperates with it also moves upward, thereby driving the fixed... The frame 501 moves upward in the groove 402. When the connecting frame 408 drives the fixed frame 501 to move upward, the fixed frame 501 drives the limiting block 502 and the positioning block 503 to move upward together, so that the roller 504 on the positioning block 503 abuts against the inner wall of the paper tube. This prevents the paper tube from slipping off due to gravity or shaking before the air shaft is inflated. At the same time, the multiple sets of rollers 504 also facilitate the movement of the paper tube on the shaft 1. During this process, the second spring 505 plays a buffering role, which can prevent damage to the inner wall of the paper tube when the positioning block 503 continues to move upward. When the connecting block 404 and the connecting plate 405 move backward, through its The ball screw drive pair between the screw 403 and the connecting sleeve 603 is converted into the rotational motion of the screw 403, causing the screw 403 to drive the connecting sleeve 603 to rotate. When the connecting sleeve 603 rotates, the fixing plate 606 moves out of the fixing groove 604 through the connecting rod 605, causing the fixing plate 606 to continuously rub against the inner wall of the paper tube, so as to clean the inner wall of the paper tube, thereby increasing the friction of the inner wall of the paper tube, making it less prone to slippage during high-speed winding, and preventing foreign objects from being pressed into the inner wall of the paper tube, thus preventing quality problems such as paper tube deformation, stress concentration, and indentations on the surface of the roll material. When the slider 407 touches the inner wall of the paper tube... When sensor 410 is activated, it controls the air nozzle to open, allowing compressed air to be delivered into the connecting groove 303 via the air inlet 301 and air outlet 302. The air causes the air bladder 305 to expand and push the key bar 9 to radially tighten, evenly supporting the inner wall of the core tube, thus achieving rapid locking of the paper tube core tube. When deflating, the air bladder 305 contracts, and the key bar 9 retracts, allowing the paper tube core tube to be easily removed. After the paper tube core tube is removed, the first spring 411 resets and pushes the connecting plate 405 to its original position for future use. The above describes the working principle of this type of quick-locking automatic tray-loading air shaft.

Claims

1. A quick-locking automatic tray-loading air shaft, comprising a shaft body (1), wherein a connecting pipe (2) is fixedly connected to one end of the shaft body (1), characterized in that: The shaft (1) is provided with an expansion mechanism (3) for locking the paper tube inside. The shaft (1) is provided with a moving mechanism (4) inside. The surface of the moving mechanism (4) is provided with a fixing mechanism (5) to prevent the paper tube from slipping due to gravity or shaking before inflation. One end of the shaft (1) is provided with a cleaning mechanism (6) for cleaning the paper tube.

2. The quick-locking automatic tray-loading air shaft according to claim 1, characterized in that: The expansion mechanism (3) includes an air inlet (301), an air supply port (302), a connecting groove (303), a fixing block (304), and an air bladder (305). One end of the connecting pipe (2) is provided with an air inlet (301).

3. The quick-locking automatic tray-loading air shaft according to claim 2, characterized in that: The shaft (1) has multiple sets of air supply ports (302) inside, and multiple sets of connecting grooves (303) are provided on the surface of the shaft (1). The connecting grooves (303) have two sets of fixing blocks (304) inside, and the fixing blocks (304) have airbags (305) inside.

4. The quick-locking automatic tray-loading air shaft according to claim 3, characterized in that: The surface of the airbag (305) is provided with multiple sets of key strips (9), and the airbag (305) is made of high-strength rubber material.

5. The quick-locking automatic tray-loading air shaft according to claim 1, characterized in that: The moving mechanism (4) includes a slide groove (401), a groove (402), a screw (403), a connecting block (404), a connecting plate (405), a wedge block (406), a slider (407), a connecting frame (408), a slant groove (409), a sensor (410), and a first spring (411). The surface of the shaft (1) is provided with multiple sets of slide grooves (401) and multiple sets of grooves (402). The inside of the shaft (1) is rotatably connected to a screw (403). The surface of the screw (403) is provided with a connecting block (404) and a connecting plate (405). A ball screw drive is formed between the screw (403), the connecting block (404), and the connecting plate (405).

6. A quick-locking automatic tray-loading air shaft according to claim 5, characterized in that: One end of the connecting block (404) is fixedly connected to a connecting plate (405). Multiple sets of inclined wedges (406) are fixedly connected to the surface of the connecting block (404). Multiple sets of sliders (407) are fixedly connected to the surface of the connecting plate (405). The inner wall of the slide groove (401) cooperates with the slider (407). A connecting frame (408) is slidably connected to the surface of the inclined wedge (406). An inclined groove (409) is opened inside the connecting frame (408). The outer wall of the inclined wedge (406) cooperates with the inner wall of the inclined groove (409). A sensor (410) is provided at one end of the inner wall of the slide groove (401). A first spring (411) is sleeved on the surface of one end of the screw (403). A shaft (1) is fixedly connected to one end of the first spring (411), and a connecting plate (405) is fixedly connected to the other end.

7. A quick-locking automatic tray-loading air shaft according to claim 2, characterized in that: The fixing mechanism (5) includes a fixing frame (501), a limiting block (502), a positioning block (503), a roller (504), and a second spring (505). The inner walls of multiple sets of grooves (402) are slidably connected to the fixing frame (501). The bottom of the fixing frame (501) is fixedly connected to the connecting frame (408). The inner wall of the fixing frame (501) is slidably connected to the limiting block (502). The surface of the limiting block (502) is fixedly connected to the positioning block (503). Multiple sets of rollers (504) are rotatably connected inside the positioning block (503). Multiple sets of second springs (505) are provided inside the fixing frame (501). One end of the second spring (505) is fixedly connected to the limiting block (502).

8. The quick-locking automatic tray-loading air shaft according to claim 1, characterized in that: The cleaning mechanism (6) includes an annular groove (601), an annular block (602), a connecting sleeve (603), a fixing groove (604), a connecting rod (605), and a fixing plate (606). An annular groove (601) is provided at one end of the shaft (1). An annular block (602) is slidably connected to the inner wall of the annular groove (601). A connecting sleeve (603) is fixedly connected to the surface of the annular block (602). The interior of the connecting sleeve (603) is fixedly connected to one end of the screw (403).

9. A quick-locking automatic tray-loading air shaft according to claim 8, characterized in that: The surface of the connecting sleeve (603) is provided with multiple sets of fixing grooves (604), and the inner walls of the multiple sets of fixing grooves (604) are rotatably connected to connecting rods (605). The surface of the connecting rods (605) is fixedly connected to a fixing plate (606), and the surface of the fixing plate (606) is provided with multiple sets of friction blocks.

10. A quick-locking automatic tray-loading air shaft according to claim 9, characterized in that: A conical block (7) is fixedly connected to the surface of the connecting sleeve (603), and multiple sets of ball bearings (8) are rotatably connected inside the conical block (7).

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