A plastic film winding device for digital printing

Abstract

The utility model discloses a plastic film winding device for digital printing relates to digital printing technical field, the winding drum of the prior art is limited by the rotary bar, and the winding drum is difficult to remove quickly, and the practicability is low, and the following scheme is proposed, including base, the top of base is equipped with adjusting mechanism, and adjusting mechanism includes two mounting plates that are welded on the outer wall on the top of base respectively, two adjusting motors that are connected on the outer wall on one side of two mounting plates through bolt respectively, two screw rods that are connected on one end of the output shaft of two adjusting motors through coupling respectively and two fixed blocks that are connected on the outer wall on one end of two screw rods through bearing respectively, and the outer wall between two mounting plates on the top of base is connected with two guide rails through bolt, and the top of base is equipped with two mounting mechanisms. The utility model can dismantle the winding drum quickly, can fix the winding drum quickly simultaneously, and can prevent the winding drum from deforming, and the practicability is improved.

Description

Technical Field

[0001] This utility model relates to the field of digital printing technology, and in particular to a plastic film winding device for digital printing. Background Technology

[0002] Digital printing is the digitization of printing technology, encompassing some or all of the digital aspects of the printing process, including technologies such as laser typesetting, remote plate transfer, digital proofing, computer-to-plate (CTP), digital workflows, and printing plant ERP.

[0003] A search revealed a Chinese patent (application number "202221837410.8") that discloses "a plastic film winding device for digital printing." This winding device includes a housing, a first winding drum, and a second winding drum. A motor is fixedly connected to one side of the housing, and a rotating rod is fixedly installed through the housing on the other side of the motor. An electric guide rail is fixedly installed on the other end of the rotating rod inside the housing at the top and bottom. The first winding drum is movably connected to the outer periphery of the rotating rod on the other side of the stop block. A connecting seat is movably installed on the outer periphery of the rotating rod on the other side of the first winding drum. Threaded cylinders are fixedly connected to both sides of the connecting seat on the outer periphery of the rotating rod. However, during use, after the plastic film is wound up, the winding drum is restricted by the rotating rod when disassembling, making it difficult to quickly remove the winding drum, resulting in low practicality. Utility Model Content

[0004] This utility model provides a plastic film winding device for digital printing, which solves the problem that the winding device proposed in the prior art is limited by the rotating rod, making it difficult to quickly remove the winding tube and resulting in low practicality.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A plastic film winding device for digital printing includes a base. An adjustment mechanism is provided on the top of the base. The adjustment mechanism includes two mounting plates welded to the outer wall of the base top, two adjusting motors bolted to one side of the outer wall of the two mounting plates, two screws connected to one end of the output shaft of the two adjusting motors via couplings, and two fixing blocks connected to one end of the outer wall of the two screws via bearings. Two guide rails are bolted to the outer wall of the base top located between the two mounting plates. Two mounting mechanisms are provided on the top of the base, each including a sliding plate bolted to the outer wall of the screw and a mounting bracket welded to one side of the outer wall of the sliding plate. A winding mechanism is provided between the two sliding plates. The winding assembly includes two hollow rotating shafts that pass through and are connected to the upper outer walls of two slide plates via bearings, mounting rings with several mounting slots on each of the two outer walls, several airbags that are respectively embedded in the mounting rings, a winding drum with both ends sleeved on the outer walls of the two mounting rings, a winding motor that is bolted to the outer wall of one side of the slide plate, a drive gear that is connected to one end of the output shaft of the winding motor via a flat key, and a driven gear that meshes with the drive gear to form a transmission engagement. A support mechanism is provided below the winding drum. The support mechanism includes a lifting cylinder, a mounting frame that is bolted to the top of the piston rod of the lifting cylinder, and support rollers that pass through and are connected to the outer walls of the mounting frame via bearings.

[0006] Preferably, the base includes a base plate, two I-beams respectively welded to the outer walls of the top two sides of the base plate, and a mounting base welded to the outer wall of the top of the I-beams.

[0007] Preferably, the two fixing blocks are respectively welded to the top outer wall of the base, and two limiting rods are provided between the two mounting plates, with the two limiting rods passing through and welded to the outer walls of the two mounting plates respectively.

[0008] Preferably, two connecting blocks are welded to the bottom outer wall of the mounting bracket, and each of the two connecting blocks has a slider connected to its bottom outer wall by bolts. The two sliders are slidably mounted on the outer walls of the two slide rails respectively.

[0009] Preferably, the two mounting rings are respectively bolted to the outer wall of one end of the two rotating shafts, the driven gear is connected to the outer wall of one end of the rotating shaft by a flat key, and a mounting cover is bolted to the outer wall of one side of the slide plate. The rotating shaft and the output shaft of the winding motor are respectively passed through and connected to the outer wall of the mounting cover by bearings.

[0010] The above method involves placing a cardboard take-up drum between two rotating shafts. The output shafts of two adjusting motors rotate, driving two screws to rotate. The two screws adjust the distance between the two slide plates and the two rotating shafts, allowing two mounting rings to be fitted onto both ends of the take-up drum. Compressed air is introduced into multiple air bladders, causing them to inflate and secure the take-up drum. The output shaft of the take-up motor and the drive gear rotate, driving the driven gear, rotating shaft, and take-up drum to rotate. The take-up drum then winds up the plastic film. After winding, the multiple air bladders release the compressed air, and simultaneously, the output shafts of the two adjusting motors rotate, moving the two mounting rings away from the take-up drum, allowing the take-up drum to be removed.

[0011] Preferably, the lifting cylinder is bolted to the bottom outer wall of the mounting base, and two positioning rods are welded to the bottom outer wall of the mounting frame, with the two positioning rods respectively penetrating and slidably mounted on the outer wall of the mounting base.

[0012] The above scheme uses a lifting cylinder piston rod that moves linearly at a speed that matches the winding speed of the plastic film. This ensures that the support roller is always in contact with the bottom of the wound plastic film, and the support roller squeezes the wound plastic film to prevent it from being too loose during winding, while also supporting the winding drum.

[0013] The beneficial effects of this utility model are as follows: A cardboard take-up drum is placed between two rotating shafts. The output shafts of two adjusting motors rotate, driving two screws to rotate. The two screws adjust the distance between the two slide plates and the two rotating shafts, allowing two mounting rings to be fitted onto both ends of the take-up drum. Compressed air is introduced into multiple air chambers, which inflate and secure the take-up drum. After winding is complete, the multiple air chambers release the compressed air, and simultaneously, the output shafts of the two adjusting motors rotate, moving the two mounting rings away from the take-up drum, allowing the take-up drum to be removed. This allows for quick assembly and disassembly of the take-up drum, as well as quick securing of the take-up drum and prevention of deformation, thus improving its practicality. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall main structure of a plastic film winding device for digital printing proposed in this utility model.

[0015] Figure 2 This is a schematic diagram of the main structure of the adjustment mechanism of a plastic film winding device for digital printing proposed in this utility model.

[0016] Figure 3 This is a front view structural diagram of the installation mechanism of a plastic film winding device for digital printing proposed in this utility model.

[0017] Figure 4 This is an exploded view of the winding assembly of a plastic film winding device for digital printing proposed in this utility model.

[0018] Figure 5 The present utility model proposes Figure 4 Enlarged structural diagram at point A in the middle.

[0019] Figure 6 This is a front view schematic diagram of the support mechanism of a plastic film winding device for digital printing proposed in this utility model.

[0020] In the diagram: 1. Base; 2. Adjustment mechanism; 201. Mounting plate; 202. Adjustment motor; 203. Screw; 204. Fixing block; 205. Limiting rod; 3. Guide rail; 4. Mounting mechanism; 401. Slide plate; 402. Mounting frame; 403. Connecting block; 404. Slider; 5. Rewinding assembly; 501. Rotating shaft; 502. Mounting ring; 503. Airbag; 504. Rewinding drum; 505. Rewinding motor; 506. Drive gear; 507. Driven gear; 6. Support mechanism; 601. Lifting cylinder; 602. Mounting frame; 603. Support roller; 604. Positioning rod. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Example 1, referring to Figure 1-5A plastic film winding device for digital printing includes a base 1 consisting of a base plate, two I-beams welded to the outer walls of the top sides of the base plate, and mounting seats welded to the outer walls of the top of the I-beams. An adjustment mechanism 2 is provided on the top of the base 1. The adjustment mechanism 2 includes two mounting plates 201 welded to the outer walls of the top of the base 1, two adjusting motors 202 bolted to the outer walls of one side of the mounting plates 201, two screws 203 connected to one end of the output shaft of the two adjusting motors 202 via couplings, and two fixing blocks 204 connected to the outer walls of one end of the screws 203 via bearings. Both adjusting motors 202 are servo motors with identical parameters and are controlled by the same PLC controller. The LC controller outputs two identical pulses to ensure that the two regulating motors 202 drive the screw 203 to rotate the same number of times, thereby ensuring that the two slide plates 401 move the same distance. Two fixing blocks 204 are welded to the top outer wall of the base 1. Two limiting rods 205 are provided between the two mounting plates 201, with both ends of the two limiting rods 205 passing through and welded to the outer wall of the two mounting plates 201. Two guide rails 3 are bolted to the top of the base 1, located on the outer wall between the two mounting plates 201. Two mounting mechanisms 4 are provided on the top of the base 1. The mounting mechanism 4 includes a slide plate 401 screwed to the outer wall of the screw 203 and a mounting bracket 402 welded to the outer wall of one side of the slide plate 401. Two connecting blocks are welded to the bottom outer wall of the mounting bracket 402. 403, two connecting blocks 403 are each bolted to the bottom outer wall of a slider 404. The two sliders 404 are slidably mounted on the outer walls of the two slide rails 3. A winding assembly 5 is provided between the two slide plates 401. The winding assembly 5 includes two hollow rotating shafts 501 that pass through and are connected to the upper outer walls of the two slide plates 401 by bearings, mounting rings 502 with several mounting slots on their outer walls, several airbags 503 that are respectively embedded in the mounting rings 502, winding drums 504 that are respectively sleeved on the outer walls of the two mounting rings 502, a winding motor 505 bolted to the outer wall of one side of the slide plate 401, a drive gear 506 connected to one end of the output shaft of the winding motor 505 by a flat key, and a drive gear 506 that interacts with the drive gear 506. Driven gears 507 mesh to form a transmission engagement. Two rotating shafts 501 are connected at one end to the outer walls of two mounting brackets 402 via bearings. Two mounting rings 502 are bolted to the outer walls of one end of each of the two rotating shafts 501. Each of the two rotating shafts 501 has an air chamber on one side. The air chambers are connected to multiple air bags 503 via multiple metal delivery pipes. Each delivery pipe is equipped with a solenoid valve to ensure that the amount of compressed gas supplied to the multiple air bags 503 is the same, preventing the winding drum 504 from being misaligned with the rotating shafts 501. The air chambers are connected to a compressed air source (such as an air compressor) via rotary joints (existing technology, not shown in the figure, but can be referenced as an air bag shaft or air expansion shaft). The air bags 503 expand radially under the limiting action of the mounting grooves.The surface of the airbag 503 is machined with complex anti-slip textures to prevent slippage between the take-up drum 504 and the airbag 503. The take-up drum 504 is made of paper (a common material on the market), and its inner diameter is slightly larger than the outer diameter of the mounting ring 502 (e.g., 0.5mm-1mm). The driven gear 507 is connected to the outer wall of one end of the rotating shaft 501 via a flat key. A mounting cover is bolted to the outer wall of one side of the slide plate 401. One end of the output shaft of the rotating shaft 501 and the take-up motor 505 are respectively connected to the outer wall of the mounting cover via bearings.

[0023] Example 2, refer to Figure 6 A plastic film winding device for digital printing also includes a support mechanism 6. The support mechanism 6 includes a lifting cylinder 601, a mounting frame 602 bolted to the top of the piston rod of the lifting cylinder 601, and support rollers 603 with both ends passing through and connected to the outer wall of the mounting frame 602 by bearings. The lifting cylinder 601 is bolted to the bottom outer wall of the mounting base. Two positioning rods 604 are welded to the bottom outer wall of the mounting frame 602. The two positioning rods 604 pass through and slide on the outer wall of the mounting base.

[0024] Working principle: A cardboard take-up drum 504 is placed between two rotating shafts 501. The output shafts of two adjusting motors 202 rotate, driving two screws 203 to rotate. The two screws 203 adjust the distance between the two sliding plates 401 and the two rotating shafts 501, so that the two mounting rings 502 are respectively fitted onto both ends of the take-up drum 504. Compressed air is introduced into multiple air chambers 503, which inflate and fix the take-up drum 504. The output shaft of the take-up motor 505 and the drive gear 506 rotate, driving the driven gear 507, the rotating shafts 501, and the take-up drum 504 to rotate. The take-up drum 504 winds up the plastic film. The piston rod of the lifting cylinder 601 moves linearly, and the moving speed is matched with the winding speed of the plastic film, so that the support roller 603 is always in contact with the bottom of the wound plastic film. The support roller 603 squeezes the wound plastic film to prevent the plastic film from being too loose during winding, and at the same time supports the take-up drum 504. After winding is completed, multiple airbags 503 release compressed air, and at the same time, the output shafts of the two adjusting motors 202 rotate to drive the two mounting rings 502 away from the take-up drum 504, so that the take-up drum 504 and the wound plastic film can be removed.

[0025] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A plastic film winding device for digital printing, comprising a base (1), characterized in that, The base (1) is provided with an adjustment mechanism (2) at the top. The adjustment mechanism (2) includes two mounting plates (201) welded to the outer wall of the top of the base (1), two adjustment motors (202) connected to the outer wall of one side of the two mounting plates (201) by bolts, two screws (203) connected to one end of the output shaft of the two adjustment motors (202) by couplings, and two fixing blocks (204) connected to the outer wall of one end of the two screws (203) by bearings. The base (1) has two guide rails (3) bolted to the outer wall between two mounting plates (201); The base (1) is provided with two mounting mechanisms (4) on its top. The mounting mechanism (4) includes a sliding plate (401) screwed to the outer wall of the screw (203) and a mounting bracket (402) welded to the outer wall of one side of the sliding plate (401). A winding assembly (5) is provided between the two slide plates (401). The winding assembly (5) includes two hollow rotating shafts (501) that pass through and are connected to the upper outer walls of the two slide plates (401) by bearings, mounting rings (502) with several mounting slots on the two outer walls, several airbags (503) that are respectively embedded in the mounting rings (502), winding drums (504) that are respectively sleeved on the outer walls of the two mounting rings (502), a winding motor (505) that is bolted to the outer wall of one side of the slide plate (401), a drive gear (506) that is connected to one end of the output shaft of the winding motor (505) by a flat key, and a driven gear (507) that meshes with the drive gear (506) to form a transmission engagement. The winding drum (504) is provided with a support mechanism (6) below it. The support mechanism (6) includes a lifting cylinder (601), a mounting frame (602) that is bolted to the top of the piston rod of the lifting cylinder (601), and a support roller (603) that passes through both ends and is connected to the outer wall of the mounting frame (602) by bearings.

2. The plastic film winding device for digital printing according to claim 1, characterized in that, The base (1) includes a base plate, two I-beams welded to the outer walls of the top two sides of the base plate, and a mounting seat welded to the outer wall of the top of the I-beams.

3. The plastic film winding device for digital printing according to claim 1, characterized in that, The two fixing blocks (204) are respectively welded to the top outer wall of the base (1), and two limiting rods (205) are provided between the two mounting plates (201), and the two limiting rods (205) are respectively welded to the outer wall of the two mounting plates (201).

4. The plastic film winding device for digital printing according to claim 1, characterized in that, Two connecting blocks (403) are welded to the bottom outer wall of the mounting bracket (402), and two sliders (404) are bolted to the bottom outer wall of the two connecting blocks (403). The two sliders (404) are slidably installed on the outer walls of the two slide rails (3).

5. A plastic film winding device for digital printing according to claim 1, characterized in that, The two mounting rings (502) are respectively bolted to the outer wall of one end of the two rotating shafts (501). The driven gear (507) is connected to the outer wall of one end of the rotating shaft (501) by a flat key. A mounting cover is bolted to the outer wall of one side of the slide plate (401). The output shafts of the rotating shaft (501) and the winding motor (505) are respectively connected to the outer wall of the mounting cover by bearings.

6. A plastic film winding device for digital printing according to claim 2, characterized in that, The lifting cylinder (601) is bolted to the bottom outer wall of the mounting base. Two positioning rods (604) are welded to the bottom outer wall of the mounting frame (602), and the two positioning rods (604) are respectively inserted through and slidably installed on the outer wall of the mounting base.

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