Plastic film unwinding device with adjustable position

Abstract

The utility model belongs to the technical field of plastic film processing, and particularly relates to a plastic film unwinding device with an adjustable position, which comprises a rack, and a position adjusting device is arranged on the right side of the rack and comprises a fixed box, a cylinder I, a sliding block and a sliding rail. According to the plastic film unwinding device with the adjustable position, a first air cylinder drives a protection box to move up and down along a sliding rail so that the device can move up and down, a first gear and a gear ring are driven by a motor to rotate so that a transmission shaft and a hollow cylinder can rotate, and finally the device can rotate to unwind a plastic film; and finally, the supporting rods get close to or get away from the interior, so that the purpose of reducing or increasing the inner diameter of the supported film roll is achieved, and the transmission shaft can move left and right when the device rotates smoothly.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of plastic film processing, specifically to a plastic film unwinding device with adjustable position. BACKGROUND

[0002] The plastic film unwinding device is an auxiliary device for rotatable supporting the roll-shaped plastic film during the plastic film processing process, so that the roll-shaped plastic film is better for subsequent processing, and has been widely used in the field of printing.

[0003] At present, the existing plastic film unwinding device cannot adapt to plastic film rolls with different inner diameters, and the instability of the plastic film roll on the rotating drum easily causes the roll-shaped plastic film to run unstably during the operation, and has high use limitations.

[0004] For example, Chinese patent CN219194062U discloses a plastic film unwinding device, which includes an unwinding mechanism and a connecting disc. The unwinding mechanism specifically includes a rotating shaft and a support assembly. One end of the rotating shaft is provided with a bearing, and the outer wall of the bearing is embedded on the connecting disc. The support assembly is arranged on the rotating shaft and includes a connecting ring one, a connecting rod one, a connecting ring two, a connecting rod two and a support plate. Two groups of connecting rings one are fixedly arranged on the rotating shaft at intervals. The outer wall of the connecting ring is provided with a plurality of lugs one. The connecting ring two is arranged on the rotating shaft and can be adjusted in distance from the connecting ring one. The outer wall of the connecting ring is also provided with a plurality of lugs two. A rotating nut sleeve moves back and forth on the rotating shaft, and the connecting ring two is arranged on the nut sleeve two, so that the relative position of the connecting ring two and the connecting ring one can be changed, thereby adapting to plastic film rolls with different inner diameters, significantly improving the practicality and greatly improving the stability during unwinding.

[0005] However, the device cannot adjust the height and cannot adapt to various processing conditions. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing a plastic film unwinding device with adjustable position to solve the problem that the device cannot adjust the height and cannot adapt to various processing conditions in the above background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a plastic film unwinding device with adjustable position, which comprises a rack, and the right side of the rack is provided with a position adjusting device.

[0008] The positioning device includes a fixed box, a cylinder, a slider and a slide rail. The fixed box is fixedly installed on the upper right side of the frame. The cylinder is fixedly installed inside the fixed box. The output end of the cylinder is connected to the protective box. The slider is fixedly connected to the front and rear sides of the protective box. The slide rail is fixedly connected to the top of the fixed box and is slidably connected to the slider. The protective box is driven up and down along the slide rail by the cylinder, so that the device moves up and down.

[0009] Preferably, a transmission device is provided inside and on the left side of the protective box, and the transmission device includes a motor, a mounting frame, a ring gear, gear 1, a transmission shaft, a hollow cylinder, a limit block and a limit slot. The mounting frame is fixedly connected to the inside of the protective box, the motor is installed above the mounting frame, the gear 1 is connected to the output end of the motor, the ring gear is engaged with the outer surface of gear 1, the transmission shaft passes through the ring gear, the hollow cylinder is sleeved on the outer surface of the transmission shaft, the limit block is fixedly connected to the left end of the transmission shaft, and the limit slot is fixedly connected to the upper left side of the frame. The motor drives gear 1 and the ring gear to rotate, thereby rotating the transmission shaft and the hollow cylinder, and finally rotating the device to unwind the plastic film.

[0010] Preferably, a protrusion is provided at the left end of the hollow cylinder, and the hollow cylinder is rotatably connected to the inside of the limiting groove through the protrusion. The protrusion is rotatably connected to the limiting groove so that the device will not fall off the frame when it rotates smoothly.

[0011] Preferably, a threaded hole is provided on the right side of the mounting bracket, and the motor and the mounting bracket are threadedly connected via bolts through the threaded hole, which facilitates maintenance and replacement of the motor. At the same time, this connection method also ensures the stability and safety of the motor during operation.

[0012] Preferably, the outer surface of the hollow cylinder is provided with an inner diameter adjustment device, and the inner diameter adjustment device includes a support rod, a cylinder 2, a connecting shaft 1, a connecting rod 1, a rotating shaft 1, a bearing seat 1, a gear 2, a rack, a connecting shaft 2, a connecting rod 2, a rotating shaft 2 and a bearing seat 2. The cylinder 2 is installed inside the protective box, the bearing seat 1 is fixedly connected to the outer surface of the hollow cylinder, the rack is opened on the outer surface of the center of the transmission shaft, the gear 2 is meshed with the outer surface of the rack, the rotating shaft 1 is fixedly connected to the front and rear sides of the gear 2 and the other end is fixedly connected to the connecting rod 1 close to the side of the gear 2, and the connecting Rod one is installed on the side of bearing seat one away from gear two, the support rod is installed on the outside of the hollow cylinder, the connecting shaft one passes through the support rod and is rotatably connected to one end of the connecting rod, the bearing seat two is fixedly connected to the outer surface of the hollow cylinder, the rotating shaft two passes through bearing seat two, the connecting rod two is rotatably connected to the outer surface of the rotating shaft two, the connecting shaft two passes through the support rod and is rotatably connected to the inner surface of the connecting rod two, and the transmission shaft is driven to move by cylinder two, so that the rotation of gear two drives the connecting rod one to rotate, and finally the support rod is moved closer to or away from the inside to achieve the purpose of reducing or increasing the inner diameter of the supporting film roll.

[0013] Preferably, the transmission shaft right side fixedly connected with rotating groove, the cylinder two output end is connected with rotating ring, the transmission shaft and cylinder two through rotating ring and rotating groove cooperation rotation connection, make the device in fluent rotation transmission shaft can move left and right.

[0014] Preferably, the protection box right side is provided with threaded hole, the protection box and cylinder two are connected through threaded hole by bolt thread connection, it is convenient for the maintenance and replacement of cylinder two, and simultaneously, this kind of connecting mode also ensures the stability and safety of cylinder two in the working process.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] 1. The plastic film unwinding device with adjustable position, the protection box is driven to move up and down along the slide rail by cylinder one, so that the device moves up and down, the gear one and the gear ring are driven to rotate by the motor, so that the transmission shaft and the hollow cylinder rotate, and finally the device rotates to unwind the plastic film.

[0017] 2. The plastic film unwinding device with adjustable position, the transmission shaft is driven to move by cylinder two, so that the gear two rotates to drive the connecting rod one to rotate, finally the supporting rod approaches or moves away from the inside to achieve the purpose of reducing or increasing the inside diameter of the supporting film roll, and the transmission shaft can move left and right when the device rotates smoothly. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the whole structure schematic diagram of the utility model;

[0019] Figure 2 It is the position adjusting structure schematic diagram of the utility model;

[0020] Figure 3 It is the transmission structure schematic diagram of the utility model;

[0021] Figure 4 It is the inside diameter adjusting structure schematic diagram of the utility model.

[0022] In the drawing: 1, rack;2, protection box;201, motor;202, mounting frame;203, gear ring;204, gear one;205, transmission shaft;206, hollow cylinder;207, limit block;208, limit groove;3, fixed box;301, cylinder one;302, sliding block;303, slide rail;4, supporting rod;401, cylinder two;402, rotating ring;403, rotating groove;404, connecting shaft one;405, connecting rod one;406, rotating shaft one;407, bearing seat one;408, gear two;409, rack;410, connecting shaft two;411, connecting rod two;412, rotating shaft two;413, bearing seat two. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0024] Please refer to Figures 1-4 The utility model provides a technical scheme:

[0025] Embodiment one: a plastic film unwinding device with adjustable position, including frame 1, frame 1 right side is provided with positioner,

[0026] Positioner includes fixed box 3, cylinder one 301, sliding block 302 and slide rail 303, fixed box 3 is fixedly installed on the right side upper portion of frame 1, cylinder one 301 is fixedly installed in fixed box 3, the output end of cylinder one 301 is connected with protection box 2, sliding block 302 is fixedly connected to the front and rear sides of protection box 2, and slide rail 303 is fixedly connected to the upper portion of fixed box 3 and is slidably connected with sliding block 302.

[0027] Protection box 2 is internally and left side provided with transmission device, and transmission device includes motor 201, mounting bracket 202, gear ring 203, gear one 204, transmission shaft 205, hollow cylinder 206, limit block 207 and limit slot 208, mounting bracket 202 is fixedly connected to the inside of protection box 2, motor 201 is installed on the upper portion of mounting bracket 202, gear one 204 is connected to the output end of motor 201, gear ring 203 is engaged on the outer surface of gear one 204, transmission shaft 205 penetrates gear ring 203, hollow cylinder 206 is sleeved on the outer surface of transmission shaft 205, limit block 207 is fixedly connected to the left end of transmission shaft 205, and limit slot 208 is fixedly connected to the left side upper portion of frame 1.

[0028] In the embodiment, the protection box 2 is driven by cylinder one 301 to move up and down along the slide rail 303, so that the device moves up and down, the gear one 204 and the gear ring 203 are driven by the motor 201 to rotate, so that the transmission shaft 205 and the hollow cylinder 206 rotate, and finally the device rotates to unwind the plastic film.

[0029] In this embodiment, the hollow cylinder 206 is provided with an inner diameter adjusting device on the outer surface. The inner diameter adjusting device comprises a support rod 4, a cylinder 401, a connecting shaft 404, a connecting rod 405, a rotating shaft 406, a bearing seat 407, a gear 408, a rack 409, a connecting shaft 410, a connecting rod 411, a rotating shaft 412, and a bearing seat 413. The cylinder 401 is installed inside the protective box 2. The bearing seat 407 is fixedly connected to the outer surface of the hollow cylinder 206. The rack 409 is formed on the outer surface of the transmission shaft 205. The gear 408 is engaged with the outer surface of the rack 409. The rotating shaft 406 is fixedly connected to the front and back of the gear 408 and is fixedly connected to one side of the connecting rod 405 close to the gear 408. The connecting rod 405 is installed on the side of the bearing seat 407 away from the gear 408. The support rod 4 is installed outside the hollow cylinder 206. The connecting shaft 404 penetrates through the support rod 4 and is rotatably connected to one end of the connecting rod 405. The bearing seat 413 is fixedly connected to the outer surface of the hollow cylinder 206. The rotating shaft 412 penetrates through the bearing seat 413. The connecting rod 411 is rotatably connected to the outer surface of the rotating shaft 412. The connecting shaft 410 penetrates through the support rod 4 and is rotatably connected to the inner surface of the connecting rod 411. The transmission shaft 205 is fixedly connected with a rotating groove 403 on the right side. The cylinder 401 is connected with a rotating ring 402 on the output end. The transmission shaft 205 and the cylinder 401 are rotatably connected through the cooperation of the rotating ring 402 and the rotating groove 403.

[0030] In this embodiment, the cylinder 401 drives the transmission shaft 205 to move, so that the gear 408 rotates to drive the connecting rod 405 to rotate, and finally the support rod 4 moves inward or outward to reduce or increase the inner diameter of the support film roll. The transmission shaft 205 can move left and right when the device rotates smoothly.

[0031] Working principle: The cylinder 301 drives the protective box 2 to move up and down along the slide rail 303, so that the device moves up and down. The motor 201 drives the gear 204 and the gear ring 203 to rotate, so that the transmission shaft 205 and the hollow cylinder 206 rotate, and finally the device rotates to unwind the plastic film. The cylinder 401 drives the transmission shaft 205 to move, so that the gear 408 rotates to drive the connecting rod 405 to rotate, and finally the support rod 4 moves inward or outward to reduce or increase the inner diameter of the support film roll. The transmission shaft 205 can move left and right when the device rotates smoothly.

[0032] It is to be noted that, as used in this specification and the appended claims, the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. Thus, for example, reference to "a component" can include a combination of two or more components. Additionally, the terms "comprise," "comprises," and "comprising," or any variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements is not necessarily limited to those elements, but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Furthermore, unless otherwise indicated herein, the terms "first," "second," "third," etc., are not intended to denote a physical order, quantity, or importance, but rather are used for the purpose of nomenclature.

Claims

1. A plastic film unwinding device with adjustable position, comprising a frame (1), characterized in that: A positioning device is provided on the right side of the frame (1); The positioning device comprises a fixed box (3), a cylinder (301), a slider (302) and a slide rail (303); the fixed box (3) is fixedly mounted above the right side of the frame (1); the cylinder (301) is fixedly mounted inside the fixed box (3); the output end of the cylinder (301) is connected to the protection box (2); the slider (302) is fixedly connected to the front and rear sides of the protection box (2); and the slide rail (303) is fixedly connected above the fixed box (3) and is slidably connected to the slider (302).

2. The plastic film unwinding device with adjustable position according to claim 1, characterized in that: A transmission device is provided inside and on the left side of the protection box (2), and the transmission device comprises a motor (201), a mounting frame (202), a gear ring (203), a gear one (204), a transmission shaft (205), a hollow cylinder (206), a limit block (207), and a limit slot (208); the mounting frame (202) is fixedly connected to the inside of the protection box (2); the motor (201) is mounted above the mounting frame (202); the gear one (204) is connected to the output end of the motor (201); the gear ring (203) is engaged with the outer surface of the gear one (204); the transmission shaft (205) passes through the gear ring (203); the hollow cylinder (206) is sleeved on the outer surface of the transmission shaft (205); the limit block (207) is fixedly connected to the left end of the transmission shaft (205); and the limit slot (208) is fixedly connected to the upper left side of the frame (1).

3. The plastic film unwinding device with adjustable position according to claim 2, characterized in that: A protrusion is provided at the left end of the hollow cylinder (206), and the hollow cylinder (206) is rotatably connected to the inside of the limiting groove (208) via the protrusion.

4. The plastic film unwinding device with adjustable position according to claim 2, characterized in that: A threaded hole is provided on the right side of the mounting frame (202), and the motor (201) and the mounting frame (202) are threadedly connected by bolts through the threaded hole.

5. The plastic film unwinding device with adjustable position according to claim 2, characterized in that: The outer surface of the hollow cylinder (206) is provided with an inner diameter adjustment device, and the inner diameter adjustment device includes a support rod (4), a cylinder 2 (401), a connecting shaft 1 (404), a connecting rod 1 (405), a rotating shaft 1 (406), a bearing seat 1 (407), a gear 2 (408), a rack (409), a connecting shaft 2 (410), a connecting rod 2 (411), a rotating shaft 2 (412) and a bearing seat 2 (413). The cylinder 2 (401) is installed inside the protective box (2). The bearing seat 1 (407) is fixedly connected to the outer surface of the hollow cylinder (206). The rack (409) is opened on the outer surface of the center of the transmission shaft (205). The gear 2 (408) is engaged with the outer surface of the rack (409). The rotating shaft 1 (406) It is fixedly connected to the front and rear sides of gear 2 (408) and the other end is fixedly connected to the side of connecting rod 1 (405) close to gear 2 (408), the connecting rod 1 (405) is installed on the side of bearing seat 1 (407) away from gear 2 (408), the support rod (4) is installed on the outside of the hollow cylinder (206), the connecting shaft 1 (404) passes through the support rod (4) and is rotatably connected to one end of connecting rod 1 (405), the bearing seat 2 (413) is fixedly connected to the outer surface of the hollow cylinder (206), the rotating shaft 2 (412) passes through the bearing seat 2 (413), the connecting rod 2 (411) is rotatably connected to the outer surface of the rotating shaft 2 (412), and the connecting shaft 2 (410) passes through the support rod (4) and is rotatably connected to the inner surface of the connecting rod 2 (411).

6. The plastic film unwinding device with adjustable position according to claim 5, characterized in that: The right side of the transmission shaft (205) is fixedly connected with a rotating groove (403), the output end of the second cylinder (401) is connected with a rotating ring (402), and the transmission shaft (205) and the second cylinder (401) are rotatably connected through the rotating ring (402) and the rotating groove (403).

7. The plastic film unwinding device with adjustable position according to claim 1, characterized in that: A threaded hole is provided on the right side of the protection box (2), and the protection box (2) is threadedly connected to the second cylinder (401) by bolts through the threaded hole.

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