Coating machine with adjustable processing width

Abstract

The coating machine comprises a machine body, a base material width detection device, a conveying roller, a hot melt adhesive storage box and a winding roller are sequentially arranged at the upper end of the machine body from right to left, a first coating roller is rotationally connected in the hot melt adhesive storage box, an extension groove is formed in the position, located behind the right end of the first coating roller, of the hot melt adhesive storage box, and a second coating roller is arranged in the extension groove. A second coating roller is arranged in the extension groove and is parallel to the first coating roller; a positioning shaft is arranged in the middle of the second coating roller in a penetrating manner; a first air cylinder is arranged at the right end of the hot melt adhesive storage box, a piston rod of the first air cylinder faces forwards, a connecting plate is fixedly arranged at the front end of the piston rod of the first air cylinder, the connecting plate is driven to move front and back through stretching of the piston rod of the first air cylinder, the second coating roller is in linkage with the connecting plate, and the machining width is increased by moving the second coating roller backwards. According to the technical scheme, the structural design is reasonable, the coating roller does not need to be replaced when base materials with different widths are processed, and the coating applicability and practicability are good.

Description

Technical Field

[0001] This utility model relates to the field of coating machine technology, specifically to a coating machine with adjustable processing width. Background Technology

[0002] Coating machines are mainly used for surface coating processes on films, paper, and other materials. A coating machine applies a layer of adhesive, paint, or ink with a specific function to a roll of substrate. Generally, during operation, a coating machine goes through processes such as unwinding, coating, cooling and drying, and rewinding. Currently, coating machines place the application roller inside a hot melt adhesive tank to adhere the hot melt adhesive to the surface of the substrate, thus achieving coating.

[0003] Currently, existing coating machines generally apply hot melt adhesive to the substrate by having a coating roller pick up the adhesive and bring it into contact with the substrate surface. However, existing coating machines have structural shortcomings: the width of the coating rollers is fixed and cannot be adjusted. When processing substrates of different widths, a special-sized coating roller must be used, which results in poor applicability and low practicality. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a coating machine with a reasonable structural design, which does not require changing the coating roller when processing substrates of different widths, and has good coating applicability and practicality with adjustable processing width.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a coating machine with adjustable processing width, comprising a machine body, wherein a substrate width detection device, a transfer roller, a hot melt adhesive storage box, and a take-up roller are arranged sequentially from right to left on the upper end of the machine body; the upper end of the hot melt adhesive storage box is provided with an opening, and a first coating roller is rotatably connected inside the hot melt adhesive storage box; an extension groove is provided in the hot melt adhesive storage box at the rear right end of the first coating roller, and a second coating roller is arranged in the extension groove; the second coating roller is parallel to the first coating roller, and the height of the second coating roller is the same as the height of the first coating roller;

[0006] The second coating roller has a central through hole in the middle, and a positioning shaft passes through the central through hole. The positioning shaft has a first external threaded connection part, a smooth part and a second external threaded connection part arranged sequentially from front to back. The second coating roller is sleeved on the smooth part. A first positioning nut is provided at the front end of the first external threaded connection part near the front end of the second coating roller, and a second positioning nut is provided at the rear end of the second external threaded connection part near the rear end of the second coating roller.

[0007] A first cylinder is provided at the right end of the hot melt adhesive storage box. The piston rod of the first cylinder is positioned forward, and a connecting plate is fixedly provided at the front end of the piston rod. The left end of the connecting plate is connected to the front end of the first external thread connection part of the positioning shaft. The connecting plate is moved back and forth by the extension and retraction of the piston rod of the first cylinder. The second coating roller is linked with the connecting plate. The processing width is extended by moving the second coating roller backward.

[0008] The present invention is further configured such that: a substrate positioning device is provided at the right end of the hot melt adhesive storage box; the substrate positioning device includes a fixing plate, a lifting cylinder and a positioning strip; the lower end of the lifting cylinder is fixedly connected to the fixing plate; the fixing plate is fixedly connected to the upper end of the hot melt adhesive storage box; the piston rod of the lifting cylinder is arranged upwards; and the upper end of the piston rod of the lifting cylinder is fixedly arranged to the positioning strip; a guide slope is provided on the upper surface of the positioning strip; the guide slope is inclined upwards from right to left at 15-60°.

[0009] The present invention is further configured such that: a first gantry and a second gantry are fixedly installed on the hot melt adhesive storage box; the first gantry is located directly above the first coating roller; a second cylinder is fixedly installed at the upper end of the first gantry; a first positioning frame is installed inside the first gantry; a first pressure roller is installed inside the first positioning frame; the piston rod of the second cylinder is positioned downwards; and the lower end of the piston rod of the second cylinder is fixedly connected to the upper end of the first positioning frame; the extension and retraction of the piston rod of the second cylinder drives the first positioning frame to move up and down; and the first pressure roller is linked with the first positioning frame.

[0010] The present invention is further configured such that: the second gantry is located directly above the second coating roller, and a third cylinder is fixedly installed at the upper end of the second gantry; a second positioning frame is installed inside the second gantry; a second pressure roller is installed inside the second positioning frame; the piston rod of the third cylinder is positioned downwards, and the lower end of the piston rod of the third cylinder is fixedly connected to the upper end of the second positioning frame; the extension and retraction of the piston rod of the third cylinder drives the second positioning frame to move up and down; and the second pressure roller is linked with the second positioning frame.

[0011] The present invention is further configured such that: a coating motor for driving the first coating roller to rotate is fixedly provided at the rear end of the hot melt adhesive storage box, and an adhesive partition is provided above the coating motor, the adhesive partition being inclined toward the upper port of the hot melt adhesive storage box.

[0012] The present invention is further configured such that: a front knife holder and a rear knife holder are fixedly provided at the left end of the upper port of the hot melt adhesive storage box, and an adhesive scraper is fixedly provided at the upper end of the front knife holder and the rear knife holder.

[0013] The present invention is further configured such that: a winding motor is fixedly installed on the machine body, and the winding motor drives the winding roller to rotate through a belt drive mechanism.

[0014] The present invention is further configured such that: the substrate width detection device includes a bracket, a light curtain emitting sensor is fixedly installed at the upper end of the bracket, a light curtain receiving sensor is fixedly installed at the lower end of the bracket, and the light curtain receiving sensor is located directly below the light curtain emitting sensor.

[0015] The present invention is further configured such that: an adhesive guide plate is fixedly provided at the left end of the upper port of the hot melt adhesive storage box, and the upper end face of the adhesive guide plate is arranged from left to right toward the upper port of the hot melt adhesive storage box.

[0016] The present invention is further configured such that: the machine body includes a worktable and a casing; the worktable is fixedly installed on the upper end of the casing; a first vertical support is provided at both the front and rear ends of the transmission roller, and the lower end of the first vertical support is fixedly connected to the right end of the upper surface of the worktable by bolts; the hot melt adhesive storage box is fixedly connected to the upper surface of the worktable by bolts; and a second vertical support is provided at both the front and rear ends of the take-up roller, and the lower end of the second vertical support is fixedly connected to the left end of the upper surface of the worktable by bolts.

[0017] The beneficial effects of this utility model are as follows: Compared with the prior art, this utility model has a reasonable structural design. The piston rod of the first cylinder extends and retracts, driving the connecting plate to move back and forth. The second coating roller is linked with the connecting plate. When it is necessary to extend the processing width, the piston rod of the first cylinder extends, driving the second coating roller to move backward. The second coating roller and the first coating roller together form a joint coating mechanism. The rear end of the second coating roller can fill the area that the rear end of the first coating roller cannot coat, thereby extending the processing width. When it is necessary to shorten the processing width, the piston rod of the first cylinder retracts, driving the second coating roller to move forward. When processing substrates of different widths, there is no need to change the coating roller. It has good coating applicability and practicality.

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0020] Figure 2 This is a partial structural diagram of an embodiment of the present utility model. Figure 1 ;

[0021] Figure 3 This is a partial structural diagram of an embodiment of the present utility model. Figure 2 ;

[0022] Figure 4 This is a schematic diagram of the substrate width detection device according to an embodiment of the present invention. Detailed Implementation

[0023] In the description of this embodiment, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] See Figures 1 to 4 This utility model discloses a coating machine with adjustable processing width, including a machine body 1. The upper end of the machine body 1 is provided with a substrate width detection device 2, a transfer roller 3, a hot melt adhesive storage box 4 and a take-up roller 5 from right to left. The upper end of the hot melt adhesive storage box 4 is provided with an opening, and a first coating roller 6 is rotatably connected inside the hot melt adhesive storage box 4. An extension groove is provided in the hot melt adhesive storage box 4 at the rear right end of the first coating roller 6. A second coating roller 7 is provided in the extension groove. The second coating roller 7 is parallel to the first coating roller 6, and the height of the second coating roller 7 is the same as the height of the first coating roller 6.

[0025] The second coating roller 7 has a central through hole 71 in the middle, and a positioning shaft 8 is inserted through the central through hole 71. The positioning shaft 8 has a first external threaded connection part 81, a smooth part 82 and a second external threaded connection part 83 arranged sequentially from front to back. The second coating roller 7 is sleeved on the smooth part 82. The first external threaded connection part 81 is provided with a first positioning nut 9 near the front end of the second coating roller 7, and the second external threaded connection part 83 is provided with a second positioning nut 10 near the rear end of the second coating roller 7.

[0026] A first cylinder 11 is provided at the right end of the hot melt adhesive storage box 4. The piston rod of the first cylinder 11 is positioned forward, and a connecting plate 12 is fixedly provided at the front end of the piston rod of the first cylinder 11. The left end of the connecting plate 12 is connected to the front end of the first external thread connection part of the positioning shaft 8. The connecting plate 12 is moved back and forth by the extension and retraction of the piston rod of the first cylinder 11. The second coating roller 7 is linked with the connecting plate 12. The processing width is extended by moving the second coating roller 7 backward.

[0027] Preferably, the front end of the hot melt adhesive storage box 4 is provided with a first through hole aligned with the front end of the first coating roller 6, and the front end of the first coating roller 6 passes through the first through hole; the rear end of the hot melt adhesive storage box 4 is provided with a second through hole aligned with the rear end of the first coating roller 6, and the rear end of the first coating roller 6 passes through the second through hole; the front end of the hot melt adhesive storage box 4 is provided with a third through hole aligned with the front end of the second coating roller 7, and the front end of the second coating roller 7 passes through the third through hole; the rear end of the hot melt adhesive storage box 4 is provided with a fourth through hole aligned with the rear end of the second coating roller 7, and the rear end of the second coating roller 7 passes through the fourth through hole. The left end of the connecting plate 12 is fixed to the front end of the first external threaded connection part of the positioning shaft 8 by a threaded connection or by a bolt connection, and the right end of the connecting plate 12 is fixed to the front end of the piston rod of the first cylinder 11 by a threaded connection or by a bolt connection.

[0028] To make the structural design of this utility model more reasonable, as a preferred embodiment, the right end of the hot melt adhesive storage box is provided with a substrate positioning device. The substrate positioning device includes a fixing plate 13, a lifting cylinder 14, and a positioning strip 15. The lower end of the lifting cylinder 14 is fixedly connected to the fixing plate 13, and the fixing plate 13 is fixedly connected to the upper end of the hot melt adhesive storage box 4. The piston rod of the lifting cylinder 14 is arranged upward, and the upper end of the piston rod of the lifting cylinder 14 is fixedly arranged with the positioning strip 15. A guide slope is provided on the upper surface of the positioning strip 15, and the guide slope is inclined upward from right to left at 15-60°.

[0029] Preferably, the fixing plate 13 is fixed to the right end of the hot melt adhesive storage box 4 by bolts, the lower end of the lifting cylinder 14 is fixed to the fixing plate 13 by bolts, and the upper end of the piston rod of the lifting cylinder 14 is fixed to the positioning strip 15 by bolts or by threaded connection.

[0030] The hot melt adhesive storage box 4 is fixedly equipped with a first gantry frame 16 and a second gantry frame 17. The first gantry frame 16 is located directly above the first coating roller 6, and a second cylinder 18 is fixedly installed at the upper end of the first gantry frame 16. A first positioning frame 19 is installed inside the first gantry frame 16, and a first pressure roller 20 is installed inside the first positioning frame 19. The piston rod of the second cylinder 18 is set downward, and the lower end of the piston rod of the second cylinder 18 is fixedly connected to the upper end of the first positioning frame 19. The extension and retraction of the piston rod of the second cylinder 18 drives the first positioning frame 9 to move up and down. The first pressure roller 20 is linked with the first positioning frame 19.

[0031] Preferably, the lower ends of the first gantry frame 16 and the second gantry frame 17 are both fixed to the upper end of the hot melt adhesive storage box 4 by bolts; the lower end of the second cylinder 18 is fixed to the upper end of the first gantry frame 16 by bolts; the lower end of the piston rod of the second cylinder 18 is fixed to the upper end of the first positioning frame 19 by thread or by bolts; the first positioning frame 19 has a fifth through hole at both its front and rear ends, and the first pressure roller 20 passes through the fifth through hole at both its front and rear ends.

[0032] The second gantry frame 17 is located directly above the second coating roller 7, and a third cylinder 21 is fixedly installed on the upper end of the second gantry frame 17. A second positioning frame 22 is installed inside the second gantry frame 17, and a second pressure roller 23 is installed inside the second positioning frame 22. The piston rod of the third cylinder 21 is set downward, and the lower end of the piston rod of the third cylinder 21 is fixedly connected to the upper end of the second positioning frame 22. The extension and retraction of the piston rod of the third cylinder 21 drives the second positioning frame 22 to move up and down. The second pressure roller 23 is linked with the second positioning frame 22.

[0033] Preferably, the lower end of the third cylinder 21 is fixed to the upper end of the second gantry frame 17 by bolts; the lower end of the piston rod of the third cylinder 21 is fixed to the upper end of the second positioning frame 22 by thread or by bolts; the front and rear ends of the second positioning frame 22 are provided with a sixth through hole, and the front and rear ends of the second pressure roller 23 are both inserted into the sixth through hole.

[0034] A coating motor 24 for driving the first coating roller 6 to rotate is fixedly installed at the rear end of the hot melt adhesive storage box 4, and an adhesive partition 25 is provided above the coating motor 24, the adhesive partition 25 being inclined towards the upper port of the hot melt adhesive storage box 4. Preferably, a drive roller is provided at the bottom of the second coating roller 7, the upper end of the drive roller is in contact with the lower end of the second coating roller 7, and a drive motor is provided at one end of the drive roller. The drive roller is located inside the hot melt adhesive storage box 4, and the drive motor is located outside the hot melt adhesive storage box 4. The drive roller is driven by the motor shaft of the drive motor, and the drive roller drives the second coating roller 7 to rotate.

[0035] The upper left end of the hot melt adhesive storage box 4 is fixedly provided with a front knife holder 26 and a rear knife holder 27, and an adhesive scraper 28 is fixedly provided on the upper end of the front knife holder 26 and the rear knife holder 27.

[0036] A winding motor 29 is fixedly installed on the machine body 1, and the winding motor 29 drives the winding roller 5 to rotate through a belt drive mechanism.

[0037] The substrate width detection device 2 includes a bracket 210. A light curtain emitting sensor 211 is fixedly installed at the upper end of the bracket 210, and a light curtain receiving sensor 212 is fixedly installed at the lower end of the bracket 210. The light curtain receiving sensor 212 is located directly below the light curtain emitting sensor 211.

[0038] A glue guide plate 30 is fixedly installed at the left end of the upper port of the hot melt glue storage box 4, and the upper end face of the glue guide plate 30 faces the upper port of the hot melt glue storage box 4 from left to right.

[0039] The machine body 1 includes a worktable 101 and a housing 102. The worktable 101 is fixedly installed on the upper end of the housing 102. The front and rear ends of the transmission roller 3 are provided with first vertical supports 31, and the lower end of the first vertical supports 31 is fixedly connected to the right end of the upper surface of the worktable 101 by bolts. The hot melt adhesive storage box 4 is fixedly connected to the upper surface of the worktable 101 by bolts. The front and rear ends of the take-up roller 5 are provided with second vertical supports 32, and the lower end of the second vertical supports 32 is fixedly connected to the left end of the upper surface of the worktable 101 by bolts.

[0040] In practical applications, the piston rod of the first cylinder 11 extends and retracts, driving the connecting plate 12 to move back and forth. The second coating roller 7 is linked with the connecting plate 12. When it is necessary to extend the processing width, the piston rod of the first cylinder 11 extends, driving the second coating roller 7 to move backward. The second coating roller 7 and the first coating roller 6 together form a joint coating mechanism. The rear end of the second coating roller 7 can fill the areas that the rear end of the first coating roller 6 cannot coat, thereby extending the processing width. When it is necessary to shorten the processing width, the piston rod of the first cylinder 11 retracts, driving the second coating roller 7 to move forward.

[0041] The coating motor 24 drives the first coating roller 6 to rotate. When both the first coating roller 6 and the second coating roller 7 are placed on the substrate, the bottom of the substrate will rub against the coating working surface of the second coating roller 7. When the first coating roller 6 rotates, the second coating roller 7 will rotate due to the friction between the substrate and the second coating roller 7. Alternatively, a drive roller is set at the bottom of the second coating roller 7. The upper end of the drive roller contacts the lower end of the second coating roller 7. A drive motor is set at one end of the drive roller. The drive roller is located inside the hot melt adhesive storage box 4, and the drive motor is located outside the hot melt adhesive storage box 4. The drive roller is driven by the motor shaft of the drive motor, and the drive roller drives the second coating roller 7 to rotate.

[0042] This utility model has a reasonable structural design, does not require changing the coating roller when processing substrates of different widths, and has good coating applicability and practicality.

[0043] The above description of the specific embodiments of this utility model is only used to further illustrate this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-essential improvements and adjustments made to this utility model by technical engineers based on the above description of the utility model shall fall within the scope of protection of this utility model.

Claims

1. A coating machine with adjustable processing width, comprising a machine body (1), characterized in that: The upper end of the machine body (1) is provided with a substrate width detection device (2), a transfer roller (3), a hot melt adhesive storage box (4) and a take-up roller (5) from right to left. The upper end of the hot melt adhesive storage box (4) is provided with an opening, and a first coating roller (6) is rotatably connected inside the hot melt adhesive storage box (4). An extension groove is provided at the right rear of the hot melt adhesive storage box (4) and a second coating roller (7) is provided inside the extension groove. The second coating roller (7) is parallel to the first coating roller (6), and the height of the second coating roller (7) is the same as the height of the first coating roller (6). The second coating roller (7) has a central through hole (71) in the middle, and a positioning shaft (8) is inserted through the central through hole (71). The positioning shaft (8) has a first external thread connection part (81), a smooth part (82) and a second external thread connection part (83) arranged sequentially from front to back. The second coating roller (7) is sleeved on the smooth part (82). The first external thread connection part (81) is provided with a first positioning nut (9) near the front end of the second coating roller (7), and the second external thread connection part (83) is provided with a second positioning nut (10) near the rear end of the second coating roller (7). The right end of the hot melt adhesive storage box (4) is provided with a first cylinder (11). The piston rod of the first cylinder (11) is set forward, and a connecting plate (12) is fixedly set at the front end of the piston rod of the first cylinder (11). The left end of the connecting plate (12) is connected to the front end of the first external thread connection part of the positioning shaft (8). The connecting plate (12) is moved back and forth by the extension and retraction of the piston rod of the first cylinder (11). The second coating roller (7) is linked with the connecting plate (12). The processing width is extended by moving the second coating roller (7) backward.

2. The coating machine with adjustable processing width according to claim 1, characterized in that: The hot melt adhesive storage box (4) is provided with a substrate positioning device at its right end. The substrate positioning device includes a fixing plate (13), a lifting cylinder (14), and a positioning strip (15). The lower end of the lifting cylinder (14) is fixedly connected to the fixing plate (13), and the fixing plate (13) is fixedly connected to the upper end of the hot melt adhesive storage box (4). The piston rod of the lifting cylinder (14) is set upward, and the upper end of the piston rod of the lifting cylinder (14) is fixedly set to the positioning strip (15). A guide slope is provided on the upper surface of the positioning strip (15), and the guide slope is inclined upward from right to left at 15-60°.

3. The coating machine with adjustable processing width according to claim 2, characterized in that: The hot melt adhesive storage box (4) is fixedly provided with a first gantry (16) and a second gantry (17). The first gantry (16) is located directly above the first coating roller (6), and a second cylinder (18) is fixedly provided at the upper end of the first gantry (16). A first positioning frame (19) is provided inside the first gantry (16), and a first pressure roller (20) is provided inside the first positioning frame (19). The piston rod of the second cylinder (18) is set downward, and the lower end of the piston rod of the second cylinder (18) is fixedly connected to the upper end of the first positioning frame (19). The extension and retraction of the piston rod of the second cylinder (18) drives the first positioning frame (19) to move up and down. The first pressure roller (20) is linked with the first positioning frame (19).

4. A coating machine with adjustable processing width according to claim 3, characterized in that: The second gantry (17) is located directly above the second coating roller (7), and a third cylinder (21) is fixedly installed on the upper end of the second gantry (17). A second positioning frame (22) is installed inside the second gantry (17), and a second pressure roller (23) is installed inside the second positioning frame (22). The piston rod of the third cylinder (21) is set downward, and the lower end of the piston rod of the third cylinder (21) is fixedly connected to the upper end of the second positioning frame (22). The extension and retraction of the piston rod of the third cylinder (21) drives the second positioning frame (22) to move up and down. The second pressure roller (23) is linked with the second positioning frame (22).

5. A coating machine with adjustable processing width according to claim 4, characterized in that: The hot melt adhesive storage box (4) is fixedly provided with a coating motor (24) for driving the first coating roller to rotate, and an adhesive partition (25) is provided above the coating motor (24), and the adhesive partition (25) is inclined towards the upper port of the hot melt adhesive storage box (4).

6. A coating machine with adjustable processing width according to claim 5, characterized in that: The upper port left end of the hot melt adhesive storage box (4) is fixedly provided with a front knife holder (26) and a rear knife holder (27), and the upper end of the front knife holder (26) and the rear knife holder (27) is fixedly provided with an adhesive scraper (28).

7. A coating machine with adjustable processing width according to claim 6, characterized in that: A winding motor (29) is fixedly installed on the machine body (1), and the winding motor (29) drives the winding roller (5) to rotate through a belt drive mechanism.

8. A coating machine with adjustable processing width according to claim 1 or 7, characterized in that: The substrate width detection device (2) includes a bracket (210), a light curtain emitting sensor (211) is fixedly installed at the upper end of the bracket (210), and a light curtain receiving sensor (212) is fixedly installed at the lower end of the bracket (210). The light curtain receiving sensor (212) is located directly below the light curtain emitting sensor (211).

9. A coating machine with adjustable processing width according to claim 4, characterized in that: A glue guide plate (30) is fixedly provided on the left end of the upper port of the hot melt glue storage box (4), and the upper end face of the glue guide plate (30) is set from left to right toward the upper port of the hot melt glue storage box (4).

10. A coating machine with adjustable processing width according to claim 9, characterized in that: The machine body (1) includes a worktable (101) and a chassis (102). The worktable (101) is fixedly installed on the upper end of the chassis (102). The front and rear ends of the transmission roller (3) are provided with first vertical supports (31), and the lower end of the first vertical support (31) is fixedly connected to the right end of the upper surface of the worktable (101) by bolts. The hot melt adhesive storage box (4) is fixedly connected to the upper surface of the worktable (101) by bolts. The front and rear ends of the take-up roller (5) are provided with second vertical supports (32), and the lower end of the second vertical support (32) is fixedly connected to the left end of the upper surface of the worktable (101) by bolts.

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