An air inflated chuck mechanism

Abstract

The present application relates to the field of film manufacturing, and discloses a gas expansion shaft chuck mechanism, which comprises two bases, two chucks and a gas expansion shaft clamped by the two chucks, each of the chucks comprises a base shaft, a sliding sleeve and a clamping block; the base is fixed with a bearing seat, the first end of the base shaft is rotationally connected with the bearing seat through a bearing, a notch is formed on the second end of the base shaft, the notch comprises an axial port extending in the axial direction and a radial port facing the radial direction, and the gas expansion shaft can slide into the axial port through the radial port. The gas expansion shaft chuck mechanism provided by the present application ensures that only when the radial port on the base shaft is aligned upward, the limiting pin facing the bearing seat can be inserted into the insertion hole, so that the clamping block and the sliding sleeve can smoothly retreat to remove the blockage of the radial port, and the direction of taking out the film roll is limited to be vertically upward, thereby effectively avoiding the problem that the film roll falls due to misoperation during unloading.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of thin film manufacturing, in particular to a gas expansion shaft chuck mechanism. BACKGROUND

[0002] In some thin film winding or unwinding processes, a gas expansion shaft is installed and clamped by a safety chuck, and when the gas expansion shaft is fixed, the gas expansion shaft is usually installed in the chuck port of the chuck, and then the gas expansion shaft is clamped, so that the chuck drives the gas expansion shaft to rotate synchronously, thereby completing the functions of winding or releasing the thin film. The safety chuck mainly comprises a base shaft and a locking block, the base shaft is provided with a chuck port for supporting and positioning the shaft end of the gas expansion shaft, and the locking block is used for limiting the shaft end of the gas expansion shaft on the base shaft, and the locking block can move along the axial direction of the base shaft.

[0003] Under normal circumstances, when the gas expansion shaft is removed, the chuck port on the base shaft needs to be vertically upward, and even after the locking block retreats and is unlocked, the gas expansion shaft is still supported. However, in actual application, due to the lack of work experience of the workers, there is a risk of misoperation, that is, when the winding is removed, the chuck port on the base shaft is not returned to be vertically upward, and the locking block is pushed and unlocked by the worker, so that the gas expansion shaft is separated from the base shaft and falls, thereby causing the worker to be pricked or the gas expansion shaft and the film roll to be damaged.

[0004] In addition, under normal circumstances, when the film roll is wound, the chuck port on the base shaft also needs to be vertically upward, and if the chuck port on the base shaft is not returned to be vertically upward, the shaft end of the gas expansion shaft is also easy to fall and separate from the base shaft after being put into the chuck port of the base shaft, so that the gas expansion shaft and the film roll separate from the base shaft and fall, thereby causing the worker to be pricked or the gas expansion shaft and the film roll to be damaged.

[0005] It can be seen that the prior art still needs to be improved and improved. SUMMARY

[0006] In view of the shortcomings of the prior art described above, the purpose of the present application is to provide a gas expansion shaft chuck mechanism, which aims to limit the upward direction of the thin film roll, and avoid the misoperation of the thin film roll falling.

[0007] In order to achieve the above purpose, the technical scheme adopted by the present application is as follows:

[0008] The utility model provides a kind of air inflation axle chuck mechanism, including two bases, two chuck respectively rotationally arranged on corresponding base and air inflation axle clamped by two chuck, two chuck are mirror symmetry, each chuck includes base axle, sliding sleeve and chuck block;The bearing seat is fixed on the base, the first end of the base axle is rotatably connected with the bearing seat, the base axle forms a slot on the second end, the slot includes an axial port extending in axial direction and a radial port towards radial direction, air inflation axle can be slid into the axial port through the radial port, the second end of the base axle is sleeved with the sliding sleeve that can slide along the axial direction of base axle, chuck block is arranged on the sliding sleeve, and the sliding sleeve and chuck block can jointly slide to block the radial port to realize that chuck block and the second end of base axle jointly clamp air inflation axle;Limiting pin connected with base axle is provided on the chuck block, the limiting pin extends in axial direction and is directed to the front end surface of bearing seat, a insertion hole is formed in the front end surface of bearing seat for the insertion of limiting pin, when the limiting pin is inserted into the insertion hole, the radial port is directed upward.

[0009] As a further improvement of the above technical solution, the limiting pin is a screw, a through hole is formed in the chuck block for the screw to pass through, a threaded hole corresponding to the through hole is formed in the base axle, and the head of the screw is pressed against the chuck block.

[0010] As a further improvement of the above technical solution, the second end of the base axle is in U shape, the sliding sleeve is in the shape of a ring, and an embedding entrance is formed in the inner ring of the sliding sleeve for cooperation with the chuck block, the chuck block is fixed to the sliding sleeve by a screw, and the side wall of the chuck block is in sliding connection with the base axle.

[0011] As a further improvement of the above technical solution, a fixing plate is arranged below each of the two bases, a guide rail extending in the axial direction of the air inflation axle is arranged on the fixing plate, the base is in sliding connection with the guide rail through a sliding block, and a locking screw is arranged on the base for pressing against the fixing plate.

[0012] As a further improvement of the above technical solution, a supporting block for supporting the air inflation axle is fixed in the axial port of the slot, end face stop flaps are arranged at both ends of the air inflation axle, and the end face stop flaps can drive the supporting block to move, wherein one of the bases is driven by a translation driving mechanism.

[0013] As a further improvement of the above technical solution, the translation driving mechanism includes a fixed support, an adjusting screw rod rotatably connected with the support, and a screw nut sleeved on the adjusting screw rod, the adjusting screw rod transversely penetrates the base, and the screw nut is fixed to the base.

[0014] As a further improvement of the above technical solution, the adjusting screw rod is in driving connection with a hand wheel.

[0015] As a further improvement to the above technical solution, a tension controller is provided on one of the bases, and the tension controller is connected to the corresponding base shaft for transmission.

[0016] The beneficial effects of this invention are as follows: The air shaft clamping mechanism provided by this invention, by setting a limiting pin on the clamping block and the base shaft facing the bearing seat, ensures that the limiting pin can only be inserted into the insertion hole when the radial opening on the base shaft is aligned upwards, allowing the clamping block and the sliding sleeve to smoothly retract and release the blockage of the radial opening. If the radial opening on the base shaft is not aligned upwards, the limiting pin cooperates with the bearing seat, interfering with the retraction of the clamping block and the sliding sleeve, restricting the film roll to be removed only vertically upwards, effectively avoiding the problem of the film roll falling due to misoperation during unwinding. In addition, by using the cooperation between the limiting pin and the insertion hole, the base shaft cannot rotate, so that when a new film roll is wound, the second end of the base shaft will stably support the new film roll, preventing the air shaft from falling due to rotation of the base shaft before the clamping block advances to block the radial opening and locks the air shaft. Attached Figure Description

[0017] Figure 1 This is a three-dimensional view of the air shaft clamping mechanism.

[0018] Figure 2 for Figure 1 A magnified view of a portion of region A in the middle.

[0019] Figure 3 This is a schematic diagram of the air shaft clamping mechanism.

[0020] Figure 4 for Figure 3 A magnified view of a portion of region B in the middle.

[0021] Figure 5 for Figure 3 A magnified view of a portion of region C.

[0022] Figure 6 This is a schematic diagram showing the notch on the base shaft opening to allow the locating pin to be inserted into the socket.

[0023] Figure 7 This is a schematic diagram of an end face baffle installed on an air shaft.

[0024] Explanation of main component symbols: 1-base, 2-clamping plate, 21-base shaft, 22-threaded hole, 3-groove, 31-axial opening, 32-radial opening, 4-bearing seat, 41-insertion hole, 42-bearing, 5-air shaft, 51-end face baffle, 61-sliding sleeve, 62-support block, 63-clamping block, 631-through hole, 8-limit pin, 91-fixed plate, 92-guide rail, 93-slider, 94-locking screw, 95-translation drive mechanism, 951-bracket, 952-adjusting screw, 953-screw nut, 954-handwheel, 7-tension controller. DETAILED DESCRIPTION

[0025] The present application provides a kind of air inflation shaft chuck mechanism, to make the purpose, technical scheme and effect of the present application more clearly, explicitly, the present application is further described in detail below with reference to the drawings and by example.It should be understood that the specific examples described herein are only used to explain the present application, and are not used to limit the protection scope of the present application.

[0026] Air inflation shaft 5 (or called air inflation shaft) is prior art, such as the key bar type air inflation shaft 5 of Shenzhen Guanxiang Machinery Co., Ltd., it has air nozzle and multiple key bars, and air injection and air release are carried out using air nozzle to realize tightening and relaxation, and it is convenient to use.When it is necessary to adjust film roll, it is only necessary to release air after air inflation shaft 5 to adjust position, and after adjusting, it is re-inflated to tighten to work normally, which is convenient and fast.

[0027] In this article, "front" is the direction of chuck 2 towards air inflation shaft 5, and "front" and "rear" are reversed.

[0028] Please refer to Figures 1-7 The present application provides a kind of air inflation shaft chuck mechanism, including two bases 1, two chucks 2 respectively rotationally arranged on corresponding base 1 and air inflation shaft 5 clamped by two chucks 2, two chucks 2 are mirror image symmetry, each chuck 2 includes base shaft 21, sliding sleeve 61 and clamping block 63;The bearing seat 4 is fixed on the base 1, the first end of the base shaft 21 is rotationally connected with the bearing seat 4 by bearing 42, the base shaft 21 forms a slot 3 on the second end, the slot 3 includes an axial port 31 extending along the axial direction and a radial port 32 towards the radial direction, air inflation shaft 5 can slide into the axial port 31 through the radial port 32, the second end of the base shaft 21 is externally sleeved with the sliding sleeve 61 which can slide along the axial direction of the base shaft 21, the clamping block 63 is arranged on the sliding sleeve 61, and the sliding sleeve 61 and the clamping block 63 can jointly slide along the axial direction to block the radial port 32 to realize that the clamping block 63 and the second end of the base shaft 21 jointly clamp the air inflation shaft 5;The limiting pin 8 connected with the base shaft 21 is arranged on the clamping block 63, the limiting pin 8 extends along the axial direction and towards the front end face of the bearing seat 4, and the front end face of the bearing seat 4 is provided with a insertion hole 41 for inserting the limiting pin 8, when the limiting pin 8 is inserted into the insertion hole 41, the radial port 32 faces upward.

[0029] The air inflation shaft chuck mechanism provided by the present application does not configure driving device for driving air inflation shaft 5 to rotate, because the air inflation shaft chuck mechanism provided by the present application is mainly used for unwinding film roll;Of course, if driving device for driving air inflation shaft 5 to rotate is additionally provided, it can also be used for winding film roll.

[0030] When the film roll is unwound, the film roll is sleeved on the air inflation shaft 5, the air inflation shaft 5 is inflated to form an integral whole with the roll core of the film roll, when the film on the film roll is pulled by an external force, the air inflation shaft 5 becomes a driven unwinding shaft, so that the film roll and the air inflation shaft 5 rotate synchronously, and the two clamping discs 2 clamp the two ends of the air inflation shaft 5 and rotate relative to the bearing seat 4. When the film on the film roll is used up, it is necessary to transfer the film roll (together with the air inflation shaft 5), but the orientation of the radial port 32 on the base shaft 21 is uncertain, and it is understood that only when the radial port 32 is vertically upward, it is safe to release the limiting of the air inflation shaft 5 by the clamping block 63, and the second end of the base shaft 21 can continue to support the air inflation shaft 5, so as to avoid the air inflation shaft 5 from falling. When the radial port 32 is not vertically upward, even if the worker pushes the sleeve 61 and the clamping block 63 to retreat, the limiting pin 8 on the clamping block 63 will be blocked by the front end face of the bearing seat 4, so that the clamping block 63 and the sleeve 61 cannot further retreat to eliminate the blockage of the radial port 32, which plays a foolproof role to prevent the worker from misoperation to make the air inflation shaft 5 fall from the radial port 32 under the action of gravity and cause a safety accident; only when the worker rotates the clamping disc 2 to return the radial port 32 to the vertically upward position, and aligns the limiting pin 8 with the insertion hole 41, at this time the worker pushes the sleeve 61 and the clamping block 63 to retreat, the limiting pin 8 on the clamping block 63 is inserted into the insertion hole 41, so as to eliminate the blockage of the radial port 32, at this time the air inflation shaft 5 is stably supported by the base shaft 21 before being taken out, the direction of taking out the film roll is limited to be vertically upward, and the problem of falling caused by misoperation is effectively avoided.

[0031] Since the radial port 32 of the base shaft 21 is in an open state, the radial port 32 must be vertically upward, and at this time the base shaft 21 cannot rotate by relying on the cooperation of the limiting pin 8 and the insertion hole 41, so when a new film roll (together with a new air inflation shaft 5) is put into the missing slot 3 of the base shaft 21, the second end of the base shaft 21 can stably support the new film roll, prevent the clamping block 63 from advancing to block the radial port 32 and radially limit the air inflation shaft 5, and prevent the air inflation shaft 5 from falling due to self-rotation of the base shaft 21 and disengagement from the missing slot 3; finally, the sleeve 61 advances to slide, which can drive the clamping block 63 to limit the air inflation shaft 5 again.

[0032] Compared with the prior art, the air inflation shaft chuck mechanism provided by the application ensures that only when the radial port 32 on the base shaft 21 is turned upward, the limiting pin 8 can be inserted into the insertion hole 41, so that the clamp block 63 and the sliding sleeve 61 can smoothly retreat and release the blockage of the radial port 32. If the radial port 32 on the base shaft 21 is not turned upward, the limiting pin 8 cooperates with the bearing seat 4 to interfere with the retreat of the clamp block 63 and the sliding sleeve 61, thereby limiting the direction of taking out the film roll to be only vertically upward, and effectively avoiding the problem that the film roll falls due to misoperation during unloading. In addition, with the cooperation of the limiting pin 8 and the insertion hole 41, the base shaft 21 cannot rotate, so that when a new film roll is wound, the second end portion of the base shaft 21 can stably support the new film roll, preventing the clamp block 63 from falling due to the self-rotation of the base shaft 21 and the disengagement of the air inflation shaft 5 from the missing groove 3 when the clamp block 63 does not advance to block the radial port 32.

[0033] In the embodiment, the limiting pin 8 is a screw, specifically an internal hexagonal screw, the clamp block 63 is provided with a through hole 631 through which the screw passes, the base shaft 21 is provided with a threaded hole 22 corresponding to the through hole 631, and the head of the screw abuts against the clamp block 63. Due to the cooperation of the screw and the threaded hole 22, on the one hand, the clamp block 63 and the base shaft 21 can always be connected, and on the other hand, due to the self-locking effect of the screw, the screw cannot rotate without being screwed, so that the head of the screw also limits the clamp block 63 and the sliding sleeve 61 from being separated from the base shaft 21. A worker uses a hexagonal wrench to screw the screw, and the limiting pin 8 quickly extends into or exits the insertion hole 41.

[0034] In another embodiment, the limiting pin 8 is a pin shaft structure, that is, the limiting pin 8 has a smooth outer peripheral surface, and the limiting pin 8 on the clamp block 63 can smoothly extend into / exit the insertion hole 41 by pushing the sliding sleeve 61, which is convenient to operate.

[0035] Specifically, the second end portion of the base shaft 21 is in a U shape, so that the cross-sectional shape of the missing groove 3 is non-circular; the two end portions of the air inflation shaft 5 are in a square shaft structure, so that the axial port 31 is a triangular bayonet port capable of positioning the end portion of the air inflation shaft 5; the sliding sleeve 61 is in a circular ring shape, and the inner ring of the sliding sleeve 61 is provided with an embedding port cooperating with the clamp block 63; the clamp block 63 is fixed on the sliding sleeve 61 by a screw to form an integral whole; and the side wall of the clamp block 63 is in sliding connection with the base shaft 21, that is, the inner wall surface of the base shaft 21 not only plays an axial guiding role on the sliding of the clamp block 63, but also limits the rotation of the sliding sleeve 61, so that the sliding sleeve 61 and the clamp block 63 can only move in the axial direction.

[0036] When the film roll is released for lamination, it needs to be aligned to ensure accurate lamination of the film onto the substrate / base film, i.e., the edge of the film aligns with the edge of the substrate / base film. If the substrate / base film shifts in its width direction during transport, the film roll needs corresponding alignment adjustments. Existing safety chuck mechanisms are generally fixed and cannot move. Therefore, after the safety chuck mechanism clamps the air shaft 5, the air shaft 5 cannot be moved axially for fine-tuning alignment. Only by releasing air from the air shaft 5 can the position of the film roll on the air shaft 5 be adjusted to achieve alignment. This adjustment method causes production line downtime and affects the actual production cycle.

[0037] Therefore, a fixing plate 91 is provided below each of the two bases 1. The fixing plate 91 is provided with a guide rail 92 extending axially along the air expansion shaft 5. The base 1 is slidably connected to the guide rail 92 via a slider 93. The base 1 is provided with a locking screw 94 for pressing against the fixing plate 91. Loosening the locking screw 94 allows the two bases 1 to move smoothly. The lateral position of the air expansion shaft 5 can be adjusted according to the actual film roll alignment.

[0038] To ensure that the two clamping discs 2 and the air shaft 5 form a unified whole, moving one of the bases 1 will cause the two clamping discs 2 and the air shaft 5 to move laterally as a whole, achieving fine-tuning and centering. In this embodiment, a support block 62 for supporting the air shaft 5 is fixed to the axial opening 31 of the notch 3. Both ends of the air shaft 5 are provided with end face baffles 51, which are fixed to the ends of the air shaft 5 with screws. The end face baffles 51 can drive the support block 62 to move, and one of the bases 1 is driven by a translation drive mechanism 95.

[0039] by Figure 3 For example, when the film roll needs to be moved to the right to achieve centering, the translation drive mechanism 95 drives the clamp 2 on the right to move to the right. The support block 62 on the right will pull the end face baffle 51 on the right to move to the right, while the end face baffle 51 on the left will pull the support block 62 on the left to move to the right. Thus, the film roll achieves fine-tuning centering by moving to the right. After the adjustment is completed, the locking screw 94 can relock the base 1.

[0040] When the film roll needs to be moved to the left for centering, the translation drive mechanism 95 drives the right clamp 2 to move to the left for fine adjustment. At this time, the right support block 62 will move away from the right end face baffle 51. At the same time, the left clamp 2 is pulled to the left. After the left end face baffle 51 presses against the left support block 62, it will continue to pull the air shaft 5 to the left until the right end face baffle 51 is close to the right support block 62, that is, the left clamp 2 can no longer move to the left. Thus, the film roll is moved to the left for fine adjustment and centering. After the adjustment is completed, the locking screw 94 can lock the base 1 again.

[0041] The above film roll adjusting mode can be performed when the air expansion shaft 5 expands the film roll, without stopping operation, thereby ensuring normal operation of the production line.

[0042] In the embodiment, the translation driving mechanism 95 comprises a fixed support 951, an adjusting screw rod 952 rotationally connected with the support 951, and a screw rod nut 953 sleeved on the adjusting screw rod 952. The adjusting screw rod 952 transversely penetrates through the base 1, and the screw rod nut 953 is fixed on the base 1. When the adjusting screw rod 952 is driven to rotate, the screw rod nut 953 drives the base 1 to move transversely. A motor can be arranged to drive the adjusting screw rod 952 to rotate, or a hand wheel 954 can be arranged on the adjusting screw rod 952 for manual adjustment, which is simple in control and convenient in adjustment.

[0043] One of the bases 1 is provided with a tension controller 7, which is in transmission connection with the corresponding base shaft 21. In the embodiment, the tension controller 7 is a magnetic powder brake, which uses a magnetic field to control and adjust friction, so as to stop or slow down the base shaft 21, thereby playing a role in tension adjustment of the film unwinding.

[0044] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" 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.

[0045] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection or can communicate with each other; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements or interaction relationship 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.

[0046] It can be understood that for those skilled in the art, equivalent replacement or change can be made according to the technical scheme and the inventive concept of the present application, and all these changes or replacements shall belong to the protection scope of the present application.

Claims

1. A mechanism of air inflation shaft chuck, which can be used for unwinding and winding of a film roll, comprising two bases, two chucks respectively arranged on the corresponding bases and an air inflation shaft clamped by the two chucks, the two chucks are mirror-symmetric, characterized in that, Each of the chucks comprises a base shaft, a sliding sleeve and a clamping block; a bearing seat is fixed on the base, a first end of the base shaft is rotationally connected with the bearing seat through a bearing, a notch is formed on a second end of the base shaft, the notch comprises an axial port extending in the axial direction and a radial port extending in the radial direction, an air expansion shaft can slide into the axial port through the radial port, an outer part of the second end of the base shaft is sleeved with the sliding sleeve which can slide in the axial direction of the base shaft, the clamping block is arranged on the sliding sleeve, the sliding sleeve and the clamping block can slide in the axial direction to block the radial port to realize the clamping of the air expansion shaft by the clamping block and the second end of the base shaft; a limiting pin connected with the base shaft is arranged on the clamping block, the limiting pin extends in the axial direction and faces the front end surface of the bearing seat, an insertion hole is arranged on the front end surface of the bearing seat for the insertion of the limiting pin, when the limiting pin is inserted into the insertion hole, the radial port faces upward; the second end of the base shaft is in U shape; the sliding sleeve is in ring shape, an embedding port matched with the clamping block is arranged on the inner ring of the sliding sleeve, the clamping block is fixed on the sliding sleeve through a screw, and the side wall of the clamping block is slidingly connected with the base shaft; the axial port of the notch is fixed with a supporting block for supporting the air expansion shaft, end face stop flaps are arranged on both ends of the air expansion shaft, and the end face stop flaps can drive the supporting block to move, wherein one of the bases is driven by a translation driving mechanism.

2. The pneumatic collet chuck mechanism of claim 1, wherein, The limiting pin is a screw, a through hole is arranged on the clamping block for the screw to pass through, and a threaded hole corresponding to the through hole is arranged on the base shaft, and the head of the screw is pressed against the clamping block.

3. The pneumatic collet chuck mechanism of claim 1, wherein, A fixed plate is arranged below each of the bases, the fixed plate is provided with a guide rail extending in the axial direction of the air expansion shaft, the base is slidingly connected with the guide rail through a sliding block, and a locking screw for pressing against the fixed plate is arranged on the base.

4. The pneumatic collet chuck mechanism of claim 1, wherein, The translation driving mechanism comprises a fixed support, an adjusting screw rod rotationally connected with the support, and a screw rod nut sleeved on the adjusting screw rod, the adjusting screw rod transversely penetrates the base, and the screw rod nut is fixed on the base.

5. The pneumatic collet chuck mechanism of claim 4, wherein, The adjusting screw rod is drivingly connected with a hand wheel.

6. The pneumatic collet chuck mechanism of claim 1, wherein, A tension controller is arranged on one of the bases, and the tension controller is drivingly connected with the corresponding base shaft.

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