Feeding device for a gauze machine

Abstract

A yarn feeding device of a yarn fabric machine relates to the technical field of yarn fabric production and comprises a support, a feeding disc, a discharging guide wheel and a storage wheel connected through an up-down guide structure. The storage wheel is located between the feeding disc and the discharging guide wheel. After being output from the feeding disc, the ribbon goes down around the storage wheel and then goes up around the discharging guide wheel. The storage wheel can be lifted and lowered along the up-down guide structure. Under the action of gravity, the storage wheel is lowered to form a storage area for temporarily storing the ribbon. Under the action of conveying tension, the storage wheel is lifted to release the ribbon. When the ribbon flows back, the excess ribbon is recycled by the action of gravity. The capacity of the storage area is dynamically adjusted by the storage wheel to balance the supply and the downstream demand, avoid incoherent supply or excessive stretching, improve the feeding stability, and accurately control the tension of the ribbon when it flows back by cooperating with the inductor and the clamping piece to improve the bundling accuracy.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gauze production, in particular to a feeding device of a gauze machine. BACKGROUND

[0002] In the production and processing process of medical gauze, the gauze needs to be folded and then banded for the convenience of subsequent storage, transportation and use. At present, the banding work of medical gauze stacks still relies on manual operation in many cases, which not only has low production efficiency and cannot meet the needs of large-scale production, but also is easy to cause accidental pollution to the medical gauze during manual contact, affecting the safety of the gauze and bringing potential risks to the wound care of patients.

[0003] To solve the above problems, the Chinese utility model patent with the application number 202020228631.X (the authorized announcement number is CN211893776U) discloses an automatic banding machine for medical gauze, the core design of which includes an input table arranged in the left-right direction, a banding output table arranged in the front-rear direction, and a feeding device, a banding device, a hot connection device and a line changing device. The automatic banding machine conveys the gauze stacks through the input conveying belt, and the feeding device sends the gauze stacks and the plastic tape into the banding support seat. After the banding device provides the plastic tape and the hot connection device connects the two ends of the plastic tape to complete the banding, the line changing device pushes the banded gauze stacks to the output conveying belt, realizing the automatic operation of the banding of the medical gauze stacks, effectively improving the production efficiency and reducing the risk of manual pollution.

[0004] However, the automatic banding machine for medical gauze still has some problems to be improved in the actual application process: firstly, the supply of the plastic tape mainly relies on the plastic tape pulling cylinder to directly pull the plastic tape roll, and there is no corresponding storage buffer mechanism. When the banding device needs to instantaneously extract the plastic tape, the release speed of the plastic tape roll may not be able to match in time, which may cause incoherent feeding or overstretching of the plastic tape, affecting the stability of the banding process; secondly, in terms of banding tightness control, the plastic tape is bent and hot connected mainly through fixed mechanical structures, and there is no banding tightness detection and adjustment mechanism for different thicknesses of gauze stacks, which may cause inconsistent banding tightness for different specifications of gauze stacks, affecting the banding quality.

[0005] Therefore, there is an urgent need for a feeding device for medical gauze banding that can further improve the stability of the feeding and the accuracy of the banding to better meet the high-quality requirements of large-scale production of medical gauze. SUMMARY

[0006] The first technical problem to be solved by the present application is to provide a feeding device of a gauze machine that can balance the feeding rhythm of the feeding disc and the banding machine by setting a dynamic storage area formed by a liftable storage wheel, thereby improving the stability of the feeding.

[0007] The second technical problem to be solved by the present application is to provide a feeding device of a gauze machine, which can precisely control the backflow tensioning degree of the cable tie through the up-down movement of the clamping piece, thereby improving the bundling accuracy.

[0008] The technical solution adopted by the present application to solve the first technical problem is as follows: the feeding device of the gauze machine comprises a support, and further comprises:

[0009] A feeding disc is rotatably arranged on the support and used for outputting the cable tie;

[0010] An outlet guide wheel is rotatably arranged on the support and located downstream of the feeding disc and used for guiding the cable tie to the downstream equipment;

[0011] A storage wheel is connected to the support through an up-down guide structure and located between the feeding disc and the outlet guide wheel, the cable tie output from the feeding disc is downwardly wound around the storage wheel, and then upwardly wound around the outlet guide wheel before being sent to the downstream equipment;

[0012] The storage wheel can be lifted up and down along the up-down guide structure, and under the action of gravity, the storage wheel is in a descending state, the distance between the storage wheel and the feeding disc and the distance between the storage wheel and the outlet guide wheel are increased, and the space between the storage wheel and the feeding disc and the outlet guide wheel forms a storage area for temporarily storing the cable tie output by the feeding disc;

[0013] Under the tension of the cable tie being transported to the downstream equipment, the storage wheel is lifted up along the up-down guide structure, the distance between the storage wheel and the feeding disc and the distance between the storage wheel and the outlet guide wheel are reduced, and the cable tie in the storage area is released;

[0014] The excess cable tie backflowing from the downstream equipment is in a state of entering the storage area, the storage wheel is lowered by gravity to increase the distance, and the excess cable tie is recycled.

[0015] In order to clearly show the specific structure of the support and make the installation positions of the feeding disc, the up-down guide structure and the outlet guide wheel more clear, preferably, the support comprises a vertical rod and two upper and lower horizontally arranged upper and lower horizontal rods, the upper and lower horizontal rods are fixedly connected to the vertical rod, the feeding disc is arranged on the upper horizontal rod, the up-down guide structure is vertically connected between the upper and lower horizontal rods, and the outlet guide wheel is arranged on the vertical rod.

[0016] In order to limit the lifting range of the storage wheel, prevent the storage wheel from being separated from the upper and lower guide structure due to excessive movement, and ensure the safety of equipment operation, preferably, the upper limit position and the lower limit position of the vertical movement track of the storage wheel are respectively provided with a first upper limit position proximity switch and a first lower limit position proximity switch; the first upper limit position proximity switch is fixedly installed on one side surface of the upper horizontal rod facing the storage wheel, and the first lower limit position proximity switch is fixedly installed on one side surface of the lower horizontal rod facing the storage wheel; the first upper limit position proximity switch can forcibly stop the upward movement of the storage wheel when the storage wheel rises and triggers it, and the first lower limit position proximity switch can forcibly stop the downward movement of the storage wheel when the storage wheel descends and triggers it.

[0017] In order to optimize the overall structure of the upper and lower guide structure and the cooperation mode of the storage wheel and the guide structure, ensure that the storage wheel lifts smoothly and the cable ties are stably arranged, preferably, the upper and lower guide structure comprises two vertically arranged vertical guide rods; the top ends of the two guide rods are connected to the upper horizontal rod through the upper fixed block, and the bottom ends are connected to the lower horizontal rod through the lower fixed block; the circumferential surface of the storage wheel is provided with a guide ring groove in sliding cooperation with the guide rod, and the guide ring groove is arranged around the circumferential direction of the storage wheel and coaxial with the storage wheel; the circumferential surface of the storage wheel is also provided with a cable tie ring groove for the cable tie to pass from the bottom, and the cable tie ring groove and the guide ring groove are distributed along the axial direction on the circumferential surface.

[0018] In order to optimize the specific structure and installation mode of the discharge guide wheel, optimize the conveying path of the cable tie, and make the cable tie transmission more stable, preferably, the discharge guide wheel comprises a first discharge guide wheel and a second discharge guide wheel, and the first discharge guide wheel and the second discharge guide wheel are connected to the vertical rod in an upper and lower spaced manner through the transversely extending mounting frame; after the cable tie is discharged from the storage wheel, it is wound around the top of the first discharge guide wheel upward, then descends to the second discharge guide wheel and is conveyed to the downstream equipment after passing through the bottom of the second discharge guide wheel.

[0019] The technical scheme adopted by the application to solve the second technical problem is that: the bracket is provided with a clamping piece capable of moving up and down and a driving structure for driving the clamping piece to move up and down, the clamping piece is located between the first discharge guide wheel and the second discharge guide wheel, and has the function of clamping or loosening the cable tie; when the cable tie is in a backflow state, the driving structure drives the clamping piece that has clamped the cable tie to move upward to drive the cable tie to move in the direction of the storage wheel and tighten it, and when the displacement length of the cable tie reaches the preset backflow length, the clamping piece loosens the cable tie and stops moving.

[0020] In order to accurately detect the displacement length of the cable tie, realize the accurate control of the backflow length, and improve the bundling accuracy, preferably, a sensor is further arranged on the mounting frame connected to the support, the sensing end of the sensor faces the surface of the cable tie, the sensor can detect the character or pattern mark arranged equidistantly along the length direction on the surface of the cable tie, calculate the displacement length of the cable tie according to the number of the marks, and send a control signal to trigger the driving structure to release the clamping piece and stop moving when the displacement length of the cable tie reaches the preset backflow length.

[0021] In order to optimize the specific structure of the driving structure, realize the up-down movement of the clamping piece, and ensure the stability and reliability of the driving, preferably, the driving structure comprises a motor, a driving wheel, a driven wheel and a transmission belt, the driving wheel is drivingly connected with the motor, the transmission belt is arranged between the driving wheel and the driven wheel, and the clamping piece is fixedly connected with the transmission belt to realize the up-down movement under the driving of the transmission belt.

[0022] In order to optimize the up-down guiding performance of the clamping piece and ensure the stability and accuracy of the up-down movement, preferably, a vertical guide rail is arranged on the vertical rod, a moving frame is fixedly arranged on the transmission belt, a sliding block guided by the guide rail is connected with the moving frame, and the clamping piece is mounted on the moving frame to realize the synchronous up-down movement of the moving frame and the clamping piece through the up-down movement of the transmission belt.

[0023] In order to limit the up-down movement stroke of the moving frame and the sliding block, prevent the excessive movement from causing the damage of the structure, and ensure the safety of the equipment operation, preferably, the upper limit position and the lower limit position of the vertical movement track of the sliding block are respectively provided with a second upper limit proximity switch and a second lower limit proximity switch.

[0024] The second upper limit proximity switch is fixedly mounted on the side surface of the vertical rod facing the sliding block, and the second lower limit proximity switch is fixedly mounted on the side surface of the vertical rod facing the sliding block.

[0025] The second upper limit proximity switch can stop the upward movement of the sliding block when the sliding block rises to trigger the second upper limit proximity switch, and the second lower limit proximity switch can stop the downward movement of the sliding block when the sliding block descends to trigger the second lower limit proximity switch.

[0026] In order to ensure that the feeding disc can continuously and stably output the cable tie, and avoid the influence of the interruption of the feeding on the subsequent process, preferably, a driving piece is drivingly connected with the feeding disc, and the driving piece is used to drive the feeding disc to rotate to continuously output the cable tie to the downstream.

[0027] Compared with the prior art, the application has the advantages that by arranging the feeding disc, the discharging guide wheel and the storage wheel connected through the up-down guide structure on the support, and by arranging the storage wheel between the feeding disc and the discharging guide wheel, the cable ties are output from the feeding disc, then downwardly pass through the storage wheel, then upwardly pass through the discharging guide wheel, and the storage wheel can be lifted up and down along the up-down guide structure, and when the storage wheel is lowered under the action of gravity, the distance between the storage wheel and the feeding disc and the distance between the storage wheel and the discharging guide wheel are increased, so that the cable ties are temporarily stored in the storage area, and when the storage wheel is lifted up under the action of the cable tie conveying tension, the distance is reduced to release the cable ties, and the excess cable ties can be recycled by the self-weight when the cable ties backflow, and since the storage wheel can dynamically adjust the capacity of the storage area to balance the output of the feeding disc and the demand rhythm of the downstream equipment, the problem of incoherent cable tie feeding or excessive stretching caused by the mismatch between the feeding speed and the downstream consumption can be avoided, the stability of the cable tie conveying process is ensured, the continuity of the subsequent bundling process is not affected due to the lack of a buffering mechanism, and the working reliability of the feeding device is effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a perspective structural schematic view of the embodiment;

[0029] Figure 2 is another perspective structural schematic view of the embodiment from another angle;

[0030] Figure 3 is an exploded state structural schematic view of the embodiment;

[0031] Figure 4 is an enlarged schematic view of the B part of Figure 1 ;

[0032] Figure 5 is an enlarged schematic view of the C part of Figure 2 ;

[0033] Figure 6 is a perspective structural schematic view of the storage wheel in the embodiment;

[0034] Figure 7 is a perspective structural schematic view of the feeding device and the bundling machine in the embodiment. DETAILED DESCRIPTION

[0035] The application will be further described in detail below with reference to the embodiment and the accompanying drawings.

[0036] As shown in Figures 1 to 7 , it is the best embodiment of the application.

[0037] The feeding device of the gauze machine in this embodiment mainly includes a bracket 1, a feeding tray 2, a discharge guide wheel 3, a storage wheel 4, an upper and lower guide structure 5, a driving component 6, a first upper limit proximity switch 7, a first lower limit proximity switch 8, a clamping component 9, a driving structure 10, a sensor 11, a guide rail 12, a moving frame 13, a second upper limit proximity switch 14, and a second lower limit proximity switch 15. The feeding device of the gauze machine disclosed in this embodiment aims to solve the problems of discontinuous feeding, excessive stretching of plastic straps, and inconsistent binding tightness in existing automatic medical gauze bandaging machines. Its overall structure, through dynamic material storage buffering and precise control design, becomes a key connecting device between the gauze machine production line and the bandaging machine, improving feeding stability and bandaging accuracy.

[0038] The structure and connection relationships of each component are as follows:

[0039] Bracket 1: Reference Figures 1 to 3 As shown, the bracket 1 serves as the overall installation base and can be made of metal. It includes a vertical rod 1a and two horizontal rods 1b1 and 1b2 spaced apart vertically. The upper horizontal rods 1b1 and 1b2 are vertically fixed to the vertical rod 1a to form a stable frame. This structure not only provides an installation benchmark for each functional component, but also ensures the accurate relative position of the feeding device with the gauze machine and the binding machine through a fixed connection with the gauze machine frame, thus avoiding feeding deviations caused by equipment misalignment.

[0040] Feed tray 2: Reference Figures 1 to 3 As shown, the feed tray 2 is disc-shaped and rotatably mounted on the upper crossbar 1b1 via bearings. It is primarily used for winding and outputting cable ties A. A drive unit 6, such as a servo motor, is connected to one side of the feed tray 2. The drive unit 6 is fixed to the upper crossbar 1b1, but can also be positioned in other suitable locations on the frame. It drives the feed tray 2 to rotate via a coupling, achieving continuous output of cable ties A. This design replaces the traditional manual feeding method and can automatically adjust the output speed according to the production rhythm of the gauze machine, ensuring a continuous and stable supply of cable ties to the binding machine. This solves the problem of low efficiency associated with manual feeding. Please refer to the diagram illustrating the connection with the binding machine. Figure 7 As shown in the figure, Z represents the binding machine of the gauze machine.

[0041] Storage wheel 4: Reference Figure 5 and Figure 6 As shown, the storage wheel 4 is a cylindrical wheel located between the feeding disc 2 and the discharge guide wheel 3, and is connected to the bracket 1 through the upper and lower guide structures 5. Its circumferential surface is provided with guide ring grooves 4a and cable tie ring grooves 4b spaced apart along the axial direction. The guide ring grooves 4a slide in conjunction with the upper and lower guide structures 5, and the cable tie ring grooves 4b allow the cable tie to pass around from the bottom, forming a storage path. As a core buffer component, the storage wheel 4 can dynamically adjust the storage amount according to the instantaneous demand of the strapping machine, preventing the strapping machine from interrupting operation due to feeding delays.

[0042] Top and bottom guide structure 5: Reference Figure 3 As shown, the upper and lower guide structure 5 includes two parallel and spaced vertical guide rods 5a. The top of the guide rod 5a is fixed to the upper crossbar 1b1 by an upper fixing block 5b, and the bottom is fixed to the lower crossbar 1b2 by a lower fixing block 5c. The guide ring groove 4a of the storage wheel 4 slides against the guide rod 5a, allowing the storage wheel 4 to slide up and down along the guide rod 5a. This structure ensures that the storage wheel 4 rises and falls smoothly, guarantees accurate adjustment of the storage area capacity, and thus stably connects the feeding rhythm of the feeding tray 2 and the strapping machine.

[0043] Discharge guide roller 3: Reference Figure 3 As shown, the discharge guide roller 3 includes a first discharge guide roller 3a and a second discharge guide roller 3b, both of which are grooved wheels. They are fixed to the vertical rod 1a by a horizontally extending mounting bracket 3c and are spaced vertically along the vertical rod 1a. After being discharged from the storage roller 4, the cable tie A passes sequentially around the top of the first discharge guide roller 3a and the bottom of the second discharge guide roller 3b, and is finally guided to the downstream strapping machine. This path design changes the direction of cable tie transmission, allowing the cable tie to enter the strapping machine's inlet in a horizontal or inclined manner, arriving at the strapping position synchronously with the yarn stack output by the yarn machine, ensuring strapping alignment accuracy.

[0044] First upper limit proximity switch 7 and first lower limit proximity switch 8: (Reference) Figure 3 As shown, the first upper limit proximity switch 7 and the first lower limit proximity switch 8 are respectively located at the upper and lower limit positions of the storage wheel 4 during its vertical movement. The first upper limit proximity switch 7 is fixed to the surface of the upper crossbar 1b1 facing the storage wheel 4, and the first lower limit proximity switch 8 is fixed to the surface of the lower crossbar 1b2 facing the storage wheel 4. Their function is to prevent the storage wheel 4 from excessively rising and falling and colliding with other components, ensuring the safety of the feeding device and the binding machine when working together, and avoiding mechanical interference that could affect the continuity of the yarn machine production line.

[0045] Clamping component 9: Reference Figure 1 and Figure 4 As shown, the clamping component 9 is a component with grippers, located between the first discharge guide wheel 3a and the second discharge guide wheel 3b. It moves up and down through the drive structure 10 and has the function of clamping and releasing the cable ties A. After the strapping machine completes the strapping of a set of gauze stacks, the clamping component 9 can pull the excess cable ties back to the storage area, preventing the cable ties from accumulating at the strapping machine outlet, ensuring that the initial length of the next feeding is consistent, and laying the foundation for adjusting the tightness of the gauze stacks.

[0046] Drive Structure 10: Reference Figure 3As shown, the drive structure 10 includes a motor 10a, a driving wheel 10b, a driven wheel 10c and a transmission belt 10d, the motor 10a is fixed on the vertical rod 1a, the driving wheel 10b is connected with the output shaft of the motor 10a, the driven wheel 10c is rotatably installed through a support, the transmission belt 10d is arranged between the driving wheel 10b and the driven wheel 10c, and the clamping piece 9 is fixed on the transmission belt 10d. This structure provides stable upward power for the clamping piece 9, so that it can accurately respond to the working state of the strapping machine, perform upward movement when the strapping tape returns, and ensure that the strapping tape A returns quickly and timely.

[0047] Guide rail 12 and moving frame 13: reference Figure 3 As shown, the guide rail 12 is vertically fixed on the vertical rod 1a, one side of the moving frame 13 is slidably connected with the guide rail 12 through a sliding block 13a, the other side is fixed with the transmission belt 10d, and the clamping piece 9 is installed on the moving frame 13. This guide combination ensures that the clamping piece 9 moves up and down stably, avoids the length measurement error caused by the shaking of the strapping tape, and provides accurate length data for the strapping tightness of the strapping machine.

[0048] Second upper limit proximity switch 14 and second lower limit proximity switch 15: reference Figure 3 As shown, the second upper limit proximity switch 14 and the second lower limit proximity switch 15 are respectively arranged at the upper and lower limit positions of the vertical movement of the sliding block 13a, and are fixed on the surface of the vertical rod 1a facing the sliding block 13a. Its function is to limit the stroke range of the sliding block 13a, prevent the clamping piece 9 from moving excessively and interfering with the discharge guide wheel 3 or the entrance of the strapping machine, and ensure the coordination of each device.

[0049] Inductor 11: reference Figure 3 As shown, the inductor 11 is fixed on the support 1 near the strapping tape transmission path, and can be specifically installed on the vertical rod 1a at a suitable position between the first discharge guide wheel 3a and the second discharge guide wheel 3b, and is fixed on the vertical rod 1a between the first discharge guide wheel 3a and the second discharge guide wheel 3b through a mounting bracket 3c. Its sensing end faces the outer surface of the strapping tape A, and the distance between the sensing end and the strapping tape A is controlled within a suitable range, so that the equidistant marks (words or patterns) on the surface of the strapping tape A can be accurately identified, and the displacement length of the strapping tape can be calculated by counting the number of marks. This component provides real-time length feedback for the strapping machine, so that it can automatically adjust the strapping tightness according to the preset thickness of the gauze output by the gauze machine, solve the problem of inconsistent strapping tightness of traditional equipment, and improve the strapping quality of medical gauze.

[0050] The working principle of the feeding device of the gauze machine in this embodiment is as follows:

[0051] 1. Formation of the storage area and supply adjustment

[0052] When the bundling machine does not take the material, the storage wheel 4 slides downward along the guide rod 5a of the up-down guide structure 5 due to its own gravity, so that the length of the ribbon A between the storage wheel 4 and the feeding disc 2 and between the storage wheel 4 and the discharging guide wheel 3 increases, forming a storage area, and the ribbon A output by the feeding disc 2 is temporarily stored in the area. When the bundling machine needs to instantaneously extract the ribbon A, the tension of the ribbon A increases, pulling the storage wheel 4 to slide upward along the guide rod 5a, and the ribbon A stored in the storage area is released, directly meeting the instant demand of the bundling machine for the length of the ribbon A. At this time, the supply of the ribbon A does not directly depend on the output speed of the feeding disc 2, avoiding the problem of insufficient supply caused by the inability of the feeding disc 2 to instantaneously increase the speed, and allowing the continuous output of the feeding disc 2 to smoothly connect with the intermittent taking of the bundling machine.

[0053] 2. Implementation of the bundling process

[0054] When the gauze pile conveyed by the gauze machine reaches the designated position of the bundling machine, the ribbon A is guided by the discharging guide wheel 3 to form a closed loop around the gauze pile, and the clamping piece 9 located between the first discharging guide wheel 3a and the second discharging guide wheel 3b is activated to clamp the ribbon A and move upward under the drive of the driving structure 10, thereby tightening the ribbon A around the gauze pile through a lifting action to complete the bundling and tightening. The excess ribbon A that exceeds the length required for bundling during the upward movement of the clamping piece 9 will be pulled back to the storage area under the joint action of the pulling of the clamping piece 9 and the gravity of the storage wheel 4, and the storage wheel 4 will slide downward along the guide rod 5a due to the pulling back of the excess ribbon A, and the space of the storage area will expand again to accommodate the backflow of the ribbon A, realizing the circulation of the ribbon A "supply-use-recovery" and ensuring the continuity of the supply of the ribbon A in the subsequent bundling process.

[0055] 3. Bundling tightness control and cutting timing

[0056] The surface of the ribbon A is provided with equally distributed text or pattern marks along the length direction, and the sensor 11 on the support 1 detects these marks in real time. During the process of tightening the ribbon A by moving the clamping piece 9 upward, the sensor 11 counts the number of marks recognized to calculate the actual displacement length of the ribbon A, and further judges whether the upward height of the clamping piece 9 reaches the tightening degree required for the thickness of the gauze pile. When the sensor 11 recognizes the preset mark position, it means that the ribbon A has reached the preset tightening degree (i.e., the bundling tightness meets the requirements), at which time the sensor 11 sends a control signal: on the one hand, it triggers the driving structure 10 to drive the clamping piece 9 to loosen the ribbon A and stop moving, and on the other hand, it drives the cutting mechanism on the bundling machine to act, cutting the ribbon A, and completing a complete gauze bundling operation.

[0057] To sum up, the feeding device of the gauze machine in the embodiment solves the unstable feeding problem of the bundling machine through the dynamic buffering function of the storage wheel 4, and meets the bundling needs of gauze stacks of different specifications in combination with the precise control of the clamping piece 9 and the inductor 11, thereby significantly improving the efficiency and quality of the bundling process on the gauze machine production line.

[0058] It should be noted that in the description of the embodiment, the terms "front, rear, left, right, upper, lower" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. The terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

Claims

1. A feeding device for a gauze machine comprising a support (1), characterized in that Also include: The feed tray (2) is rotatably arranged on the support (1) for outputting the tape (A); The discharge guide wheel (3) is rotatably arranged on the support (1) and located downstream of the feed tray (2) for guiding the tape (A) to the downstream equipment; The storage wheel (4) is connected with the support (1) through the up-down guide structure (5) and is located between the feed tray (2) and the discharge guide wheel (3). The tape (A) is output from the feed tray (2), then descends and passes through the storage wheel (4), and then ascends and passes through the discharge guide wheel (3) before being sent to the downstream equipment; Wherein, the storage wheel (4) can ascend and descend along the up-down guide structure (5). Under the action of gravity, it is in the descending state, which increases the distance between the storage wheel (4) and the feed tray (2) and the distance between the storage wheel (4) and the discharge guide wheel (3), so that the space between the storage wheel (4) and the feed tray (2) and the discharge guide wheel (3) forms a storage area for temporarily storing the tape (A) output by the feed tray (2); under the tension of the tape (A) to the downstream equipment, the storage wheel (4) ascends along the up-down guide structure (5), which reduces the distance between the storage wheel (4) and the feed tray (2) and the distance between the storage wheel (4) and the discharge guide wheel (3), and releases the tape (A) in the storage area; the excess tape (A) flowing back from the downstream equipment enters the storage area, and the storage wheel (4) descends by gravity to increase the distance and recycle the excess tape (A); The discharge guide wheel (3) includes a first discharge guide wheel (3a) and a second discharge guide wheel (3b). The support (1) is provided with a clamping piece (9) that can move up and down and a driving structure (10) that drives the clamping piece (9) to move up and down. The clamping piece (9) is located between the first discharge guide wheel (3a) and the second discharge guide wheel (3b) and has the function of clamping or loosening the tape (A); when the tape (A) is in the backflow state, the driving structure (10) drives the clamping piece (9) that has clamped the tape (A) to move upwards to drive the tape (A) to move towards the storage wheel (4) and to be tensioned, and when the displacement length of the tape (A) reaches the preset backflow length, the clamping piece (9) loosens the tape (A) and stops moving; Also include an inductor (11) arranged on a mounting bracket (3c) connected to the support (1), with its sensing end facing the surface of the tape (A). The inductor (11) can detect the text or pattern marks arranged equidistantly along the length direction on the surface of the tape (A), calculate the displacement length of the tape (A) according to the number of marks, and send a control signal to trigger the driving structure (10) to loosen the clamping piece (9) and stop moving when the displacement length of the tape (A) reaches the preset backflow length.

2. The yarn feeding device of claim 1, wherein: The support (1) includes a vertical rod (1a) and two upper horizontal rods (1b1) and lower horizontal rods (1b2) spaced apart vertically. The upper horizontal rods (1b1) and lower horizontal rods (1b2) are fixedly connected to the vertical rod (1a). The feeding tray (2) is set on the upper horizontal rod (1b1). The upper and lower guide structures (5) are vertically connected between the upper horizontal rods (1b1) and lower horizontal rods (1b2). The discharge guide wheel (3) is set on the vertical rod (1a).

3. The yarn feeding device of claim 2, wherein: The upper limit position and the lower limit position of the vertical movement trajectory of the storage wheel (4) are respectively provided with a first upper limit proximity switch (7) and a first lower limit proximity switch (8); The first upper limit proximity switch (7) is fixedly installed on the side surface of the upper crossbar (1b1) facing the storage wheel (4), and the first lower limit proximity switch (8) is fixedly installed on the side surface of the lower crossbar (1b2) facing the storage wheel (4). The first upper limit proximity switch (7) can stop the upward movement of the storage wheel (4) when it is triggered to rise, and the first lower limit proximity switch (8) can stop the downward movement of the storage wheel (4) when it is triggered to fall.

4. The yarn feeding device of claim 2, wherein: The upper and lower guide structure (5) includes two parallel and spaced vertical guide rods (5a); The top ends of the two guide rods (5a) are connected to the upper crossbar (1b1) via the upper fixing block (5b), and the bottom ends are connected to the lower crossbar (1b2) via the lower fixing block (5c). The storage wheel (4) has a guide ring groove (4a) that slides with the guide rod (5a) on its circumferential surface. The guide ring groove (4a) is arranged around the circumference of the storage wheel (4) and is coaxial with the storage wheel (4). The circumferential surface of the storage wheel (4) is also provided with a cable tie groove (4b) for the cable tie (A) to pass around from the bottom. The cable tie groove (4b) and the guide groove (4a) are distributed axially on the circumferential surface.

5. The yarn feeding device of claim 2, wherein: The first discharge guide wheel (3a) and the second discharge guide wheel (3b) are both connected to the vertical rod (1a) at intervals above and below by a horizontally extending mounting bracket (3c); After being discharged from the storage wheel (4), the cable tie (A) goes upward around the top of the first discharge guide wheel (3a), then goes down to the second discharge guide wheel (3b) and passes around its bottom before being transported to the downstream equipment.

6. The yarn feeding device of claim 5, wherein: The drive structure (10) includes a motor (10a), a drive wheel (10b), a driven wheel (10c), and a transmission belt (10d). The drive wheel (10b) is driven by the motor (10a). The transmission belt (10d) is wound between the drive wheel (10b) and the driven wheel (10c). The clamping member (9) is fixedly connected to the transmission belt (10d) so as to move up and down under the drive of the transmission belt (10d).

7. The yarn feeding device of claim 6, wherein: The vertical rod (1a) is provided with a vertically extending guide rail (12), and a movable frame (13) is fixed on the transmission belt (10d). The movable frame (13) is connected to a slider (13a) that guides and cooperates with the guide rail (12). The clamping member (9) is installed on the movable frame (13). The movable frame (13) and the clamping member (9) move up and down synchronously through the up and down movement of the transmission belt (10d).

8. The yarn feeding device of claim 7, wherein: The upper limit position and the lower limit position of the vertical motion track of the sliding block (13a) are respectively provided with a second upper limit position proximity switch (14) and a second lower limit position proximity switch (15); The second upper limit position proximity switch (14) is fixedly installed on the side surface of the vertical rod (1a) facing the sliding block (13a), and the second lower limit position proximity switch (15) is fixedly installed on the side surface of the vertical rod (1a) facing the sliding block (13a); The second upper limit position proximity switch (14) can stop the upward motion of the sliding block (13a) when the sliding block (13a) rises and triggers the second upper limit position proximity switch (14), and the second lower limit position proximity switch (15) can stop the downward motion of the sliding block (13a) when the sliding block (13a) descends and triggers the second lower limit position proximity switch (15).

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