A device for precise printing of patterns on a bag making machine

Abstract

This utility model relates to the field of pattern printing technology and discloses a precise pattern printing device for a bag making machine. It includes a worktable, a printing mechanism on one side of the top of the worktable, two strip-shaped holes on both sides of the top of the worktable, and fixed blocks fixedly connected to both sides of the bottom of the worktable. Two sliding rods are fixedly connected between the two fixed blocks, and a first limiting mechanism is provided at the same end of each of the two sliding rods. The first limiting mechanism includes an L-shaped slider slidably connected to the same end of the two sliding rods, and the L-shaped slider has a circular hole adapted to the sliding rod. This utility model enables quick adaptation to bags of different sizes and specifications without complicated operations, flexibly adjusting the positioning reference. The first and second limiting mechanisms form a double positioning constraint, ensuring that the bag is always placed in the preset printing position, completely avoiding pattern printing differences caused by positional deviation, and improving the yield rate and production efficiency of bag making and printing.

Description

Technical Field

[0001] This utility model relates to the field of pattern printing technology, and in particular to a device for precise pattern printing on a bag making machine. Background Technology

[0002] In the bag manufacturing industry, downstream industries are continuously increasing their requirements for the precision of packaging patterns. In particular, food and pharmaceutical packaging need to convey product information through clear patterns, and the application of multi-color printing is becoming more and more widespread. This puts forward higher demands on the precision of bag making machine printing equipment. Currently, some plastic bags are generally printed with patterns using screen printing machines.

[0003] In existing technologies, when printing patterns on bags using screen printing machines, there is generally no accurate positioning mechanism. The bags are placed on the printing table by human eyes in conjunction with the markings on the printing table, and the pattern can be printed. This printing method makes it difficult to accurately position the pattern, resulting in differences in bag quality. Therefore, a precise pattern printing device for bag making machines has been designed. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a device for precise printing of patterns on a bag-making machine.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A precision pattern printing device for a bag making machine includes a worktable. A printing mechanism is provided on one side of the top of the worktable. Two strip holes are opened on both sides of the top of the worktable. Fixed blocks are fixedly connected to both sides of the bottom of the worktable. Two sliding rods are fixedly connected between the two fixed blocks. A first limiting mechanism is provided at the same end of the two sliding rods. The first limiting mechanism includes an L-shaped slider slidably connected to the same end of the two sliding rods. The L-shaped slider has a circular hole adapted to the sliding rod. A base plate is fixedly connected to one end of the L-shaped slider on the inner side of the worktable. Insert rods are slidably sleeved on both ends of the base plate. The base plate has a circular hole adapted to the insert rods. The top of the two insert rods is fixedly connected to the same U-shaped frame. A limiting block is fixedly connected to the bottom of the two insert rods. A first spring is sleeved on the top of the two insert rods at the bottom of the base plate. The top two ends of the U-shaped frame are slidably connected to adjacent strip holes. The first limiting mechanism can limit the two sides of the bag and facilitate adjustment.

[0007] Preferably, the first limiting mechanism further includes a rectangular hole opened at one end of the outer side of the L-shaped slider, a round rod fixedly connected between the two ends of the rectangular hole, an anti-slip pressure block slidably sleeved on the circumferential surface of the round rod, a round hole adapted to the round rod at the bottom of the anti-slip pressure block, a pull rod fixedly connected to the outer side of the anti-slip pressure block, and a second spring sleeved on the end of the round rod away from the worktable.

[0008] Preferably, a second limiting mechanism is provided at the bottom of the workbench near the printing mechanism. The second limiting mechanism includes a screw fixedly connected to a rectangular frame, with a lead screw rotatably connected between the two ends of the rectangular frame, and a screw block screwed onto the lead screw. A lead screw nut adapted to the lead screw is fixedly sleeved in the middle of the screw block. Telescopic rods are slidably inserted into both sides of the top of the screw block. Circular holes adapted to the telescopic rods are opened on both sides of the screw block. The top of the two telescopic rods is fixedly connected to the same stop block, and a strip-shaped hole adapted to the stop block is opened on the top of the workbench. Limiting blocks are fixedly connected to the bottom of the two telescopic rods. A third spring is sleeved on the top of the two telescopic rods at the screw block. A handwheel is fixedly connected to the end of the lead screw near the pull rod through an L-shaped slider. The second limiting mechanism allows for limiting one end of the bag.

[0009] Preferably, the workbench is fixedly embedded with anti-slip rubber strips near both pull rods, and the anti-slip rubber strips are compatible with the anti-slip pressure blocks.

[0010] Preferably, the printing mechanism includes an L-shaped support frame fixedly connected to one side of the top of the workbench, and a first cylinder is fixedly connected to the top of the L-shaped support frame. The output end of the first cylinder passes through the L-shaped support frame and is fixedly connected to a connecting plate. A lifting plate is fixedly connected to the side of the connecting plate near the middle of the workbench, and a pneumatic slide rail is fixedly connected to the top of the lifting plate away from the L-shaped support frame.

[0011] Preferably, a mounting bracket is fixedly connected to the outer side of the slider on the pneumatic slide rail, and a second cylinder is fixedly connected to both sides of the top of the mounting bracket, and a scraper is fixedly connected to the bottom of both second cylinders.

[0012] Preferably, the top of the lifting plate has mounting holes at the two scrapers, and a screen printing film is fixedly connected to the mounting holes, and the screen printing film is compatible with the two scrapers.

[0013] The beneficial effects of this utility model are as follows:

[0014] By employing two limiting mechanisms (first and second), the positions of the U-shaped frames on both sides can be adjusted by pulling the lever, and the positions of the stops can be adjusted by rotating the handwheel. This ensures accurate positioning when the bag is placed, without affecting the descent of the lifting plate, thus fixing the printed pattern position. This effectively solves the problem mentioned in the background technology where the lack of accurate positioning of the bag leads to differences in pattern printing. Furthermore, it allows for quick adaptation to bags of different sizes and specifications without complex operations, flexibly adjusting the positioning reference. The first and second limiting mechanisms form a dual positioning constraint, ensuring that the bag is always placed in the preset printing position, completely avoiding differences in pattern printing caused by positional deviation, and improving the yield rate and production efficiency of bag printing. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a bag-making machine pattern precision printing device proposed in this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the bottom of the worktable of a bag-making machine pattern precision printing device proposed in this utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the first limiting mechanism of the pattern precision printing device for a bag making machine proposed in this utility model;

[0018] Figure 4 This utility model proposes a device for precise printing of patterns on a bag-making machine. Figure 3 An enlarged structural diagram at point A;

[0019] Figure 5 This is a schematic diagram of the second limiting mechanism of a bag-making machine pattern precision printing device proposed in this utility model;

[0020] Figure 6 This is a schematic diagram of the printing mechanism of a precision pattern printing device for a bag making machine proposed in this utility model.

[0021] In the diagram: 1. Workbench; 102. Anti-slip rubber strip; 103. Strip hole; 2. Printing mechanism; 201. L-shaped support frame; 202. First cylinder; 203. Connecting plate; 204. Lifting plate; 205. Screen printing film; 206. Pneumatic slide rail; 207. Mounting bracket; 208. Second cylinder; 209. Scraper; 3. First limiting mechanism; 301. L-shaped slider; 302. Base plate; 30 3. Insert rod; 304. First spring; 305. U-shaped frame; 306. Rectangular hole; 307. Round rod; 308. Second spring; 309. Anti-slip pressure block; 310. Pull rod; 4. Second limiting mechanism; 401. Rectangular frame; 402. Lead screw; 403. Handwheel; 404. Screw block; 405. Telescopic rod; 406. Third spring; 407. Stop block; 5. Fixing block; 501. Slide rod. Detailed Implementation

[0022] 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.

[0023] Reference Figures 1-6 A precision pattern printing device for a bag making machine includes a worktable 1. A printing mechanism 2 is provided on one side of the top of the worktable 1. Two strip holes 103 are provided on both sides of the top of the worktable 1. Fixing blocks 5 are fixedly connected to both sides of the bottom of the worktable 1. Two sliding rods 501 are fixedly connected between the two fixing blocks 5. A first limiting mechanism 3 is provided at the same end of the two sliding rods 501. The first limiting mechanism 3 includes an L-shaped slider 301 slidably connected to the same end of the two sliding rods 501. The L-shaped slider 301 has a groove that is adapted to the sliding rod 501. The L-shaped slider 301 is fixedly connected to a base plate 302 at one end inside the workbench 1. Both ends of the base plate 302 are slidably fitted with insert rods 303. The base plate 302 has a round hole that matches the insert rods 303. The top of the two insert rods 303 is fixedly connected to the same U-shaped frame 305. The bottom of the two insert rods 303 is fixedly connected to a limit block. The top of the two insert rods 303 is fitted with a first spring 304. The top ends of the U-shaped frame 305 are slidably connected to adjacent strip holes 103.

[0024] In this utility model, the first limiting mechanism 3 also includes a rectangular hole 306 opened at one end of the outer side of the L-shaped slider 301. A round rod 307 is fixedly connected between the two ends of the rectangular hole 306. An anti-slip pressure block 309 is slidably sleeved on the circumferential surface of the round rod 307. A round hole adapted to the round rod 307 is opened at the bottom of the anti-slip pressure block 309. A pull rod 310 is fixedly connected to the outer side of the anti-slip pressure block 309. A second spring 308 is sleeved on the end of the round rod 307 away from the worktable 1. Through the setting of the second spring 308 and the U-shaped frame 305, the U-shaped frame 305 can descend when squeezed by the lifting plate 204. After the lifting plate 204 rises, it can rise again to position the bag.

[0025] In this invention, a second limiting mechanism 4 is provided at the bottom of the workbench 1 near the printing mechanism 2. The second limiting mechanism 4 includes a screw rod 402 rotatably connected between the two ends of a rectangular frame 401, and a screw block 404 screwed onto the screw rod 402. A screw nut adapted to the screw rod 402 is fixedly sleeved in the middle of the screw block 404. Telescopic rods 405 are slidably inserted into both sides of the top of the screw block 404, and round holes adapted to the telescopic rods 405 are opened on both sides of the screw block 404. The top of the two telescopic rods 405 is fixedly connected to the same stop block 407, and the top of the worktable 1 is provided with a strip-shaped hole that matches the stop block 407. The bottom of the two telescopic rods 405 is fixedly connected to a limit block. The top of the two telescopic rods 405 is fitted with a third spring 406. When the stop block 407 is squeezed by the lifting plate 204, it can retract and descend without affecting the descent of the lifting plate 204. The end of the screw 402 near the pull rod 310 passes through the L-shaped slider 301 and is fixedly connected to a handwheel 403.

[0026] In this utility model, anti-slip rubber strips 102 are fixedly embedded near the two pull rods 310 on the workbench 1, and the anti-slip rubber strips 102 are adapted to the anti-slip pressure block 309. Through the tight contact between the anti-slip pressure block 309 and the anti-slip rubber strips 102, the L-shaped slider 301 will not slide without human operation, thus ensuring the stability of the first limiting mechanism 3 in use.

[0027] In this utility model, the printing mechanism 2 includes an L-shaped support frame 201 fixedly connected to one side of the top of the workbench 1, and a first cylinder 202 fixedly connected to the top of the L-shaped support frame 201. The output end of the first cylinder 202 passes through the L-shaped support frame 201 and is fixedly connected to a connecting plate 203. A lifting plate 204 is fixedly connected to the side of the connecting plate 203 near the middle of the workbench 1, and a pneumatic slide rail 206 is fixedly connected to the top of the lifting plate 204 away from the L-shaped support frame 201.

[0028] In this utility model, a mounting bracket 207 is fixedly connected to the outer side of the slider on the pneumatic slide rail 206, and a second cylinder 208 is fixedly connected to both sides of the top of the mounting bracket 207. A scraper 209 is fixedly connected to the bottom of the two second cylinders 208. One scraper 209 moves closely to the screen printing film 205 to achieve printing, and the other scraper 209 can spread the pigment again.

[0029] In this utility model, the top of the lifting plate 204 is provided with mounting holes at the two scrapers 209, and a screen printing film 205 is fixedly connected to the mounting holes, and the screen printing film 205 is adapted to the two scrapers 209.

[0030] Working principle: During debugging, the first cylinder 202, pneumatic slide rail 206, and second cylinder 208 are all connected to the air pump via a controller, solenoid valve, and pipelines. The controller can control the first cylinder 202, pneumatic slide rail 206, and second cylinder 208. In use, the screen printing film 205 of the desired pattern is first installed on the lifting plate 204. The printing ink is poured into the top of the screen printing film 205. The positions of the two first limit mechanisms 3 and second limit mechanisms 4 are adjusted according to the size of the bag and the printing position. The device is then pulled... Pulling the lever 310 causes the anti-slip block 309 to compress the second spring 308, separating the anti-slip block 309 from the anti-slip rubber strip 102. At this point, the L-shaped slider 301 can slide on the slider 501, carrying the base plate 302 and the U-shaped frame 305. By adjusting the two first limiting mechanisms 3, the left and right sides of the bag can be limited. By turning the handwheel 403, the screw 402 moves with the screw block 404, thereby adjusting the position of the stop block 407. Through the limiting of the two U-shaped frames 305 and the stop block 407, each bag is placed... After the workbench 1 is in a fixed position, the first cylinder 202 is activated to extend, causing the lifting plate 204 to descend, bringing the screen printing film 205 into contact with the bag. Simultaneously, the U-shaped frame 305 and the stop block 407, under the pressure of the lifting plate 204, will descend and retract, compressing the first spring 304 and the third spring 406 without affecting the descent of the lifting plate 204. Then, a second cylinder 208 is activated, causing the scraper 209 at the bottom to contact the screen printing film 205. Through the pneumatic slide rail 206, the mounting bracket 207 moves to the other end, allowing the ink to be transferred through the screen printing... The pattern is printed on the bag using film 205. Then, the first cylinder 202 retracts, and the U-shaped frame 305 and the stop block 407 extend, allowing the bag to be replaced. The first limiting mechanism 3 and the second limiting mechanism 4 ensure that the position of each bag is fixed in the same way. Before the next printing, the second cylinder 208 extends, causing the scraper 209 to descend, but not to stick tightly to the screen printing film 205. The ink on the top of the screen printing film 205 is spread again by the movement of the pneumatic slide rail 206, making it easy to print again. This achieves precise printing on the bag.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A device for precise printing of patterns on a bag-making machine, comprising a worktable (1), characterized in that, A printing mechanism (2) is provided on one side of the top of the workbench (1). Two strip holes (103) are opened on both sides of the top of the workbench (1). Fixed blocks (5) are fixedly connected to both sides of the bottom of the workbench (1). Two slide rods (501) are fixedly connected between the two fixed blocks (5). A first limiting mechanism (3) is provided at the same end of the two slide rods (501). The first limiting mechanism (3) includes an L-shaped slider (301) slidably connected to the same end of the two slide rods (501). The L-shaped slider (301) is provided with a round hole that matches the slide rod (501). One end of the block (301) located inside the workbench (1) is fixedly connected to a base plate (302), and both ends of the base plate (302) are slidably fitted with insert rods (303). The base plate (302) has a round hole that matches the insert rods (303). The top of the two insert rods (303) is fixedly connected to the same U-shaped frame (305). The bottom of the two insert rods (303) is fixedly connected to a limit block. The top of the two insert rods (303) is fitted with a first spring (304). The top two ends of the U-shaped frame (305) are slidably connected in adjacent strip holes (103).

2. The precision pattern printing device for a bag making machine according to claim 1, characterized in that, The first limiting mechanism (3) also includes a rectangular hole (306) opened at one end of the outer side of the L-shaped slider (301). A round rod (307) is fixedly connected between the two ends of the rectangular hole (306). An anti-slip pressure block (309) is slidably sleeved on the circumferential surface of the round rod (307). A round hole adapted to the round rod (307) is opened at the bottom of the anti-slip pressure block (309). A pull rod (310) is fixedly connected to the outer side of the anti-slip pressure block (309). A second spring (308) is sleeved on the end of the round rod (307) away from the worktable (1).

3. The precision pattern printing device for a bag making machine according to claim 1, characterized in that, A second limiting mechanism (4) is provided at the bottom of the workbench (1) near the printing mechanism (2). The second limiting mechanism (4) includes a screw rod (402) fixedly connected to a rectangular frame (401). A screw rod (402) is rotatably connected between the two ends of the rectangular frame (401), and a screw block (404) is screwed onto the screw rod (402). A screw nut that matches the screw rod (402) is fixedly sleeved in the middle of the screw block (404). Telescopic rods (405) are slidably inserted into both sides of the top of the screw block (404). Both sides are provided with round holes that are compatible with the telescopic rods (405). The top of the two telescopic rods (405) is fixedly connected to the same stop block (407). The top of the worktable (1) is provided with a strip-shaped hole that is compatible with the stop block (407). The bottom of the two telescopic rods (405) is fixedly connected to a limit block. The top of the two telescopic rods (405) is provided with a third spring (406). The end of the screw (402) near the pull rod (310) is fixedly connected to a handwheel (403) through the L-shaped slider (301).

4. The precision pattern printing device for a bag making machine according to claim 1, characterized in that, The workbench (1) is fixedly embedded with anti-slip rubber strips (102) near the two pull rods (310), and the anti-slip rubber strips (102) are compatible with the anti-slip pressure block (309).

5. The device for precise printing of patterns on a bag-making machine according to claim 1, characterized in that, The printing mechanism (2) includes an L-shaped support frame (201) fixedly connected to one side of the top of the workbench (1), and a first cylinder (202) fixedly connected to the top of the L-shaped support frame (201). The output end of the first cylinder (202) passes through the L-shaped support frame (201) and is fixedly connected to a connecting plate (203). A lifting plate (204) is fixedly connected to the side of the connecting plate (203) near the middle of the workbench (1), and a pneumatic slide rail (206) is fixedly connected to the side of the top of the lifting plate (204) away from the L-shaped support frame (201).

6. The precision pattern printing device for a bag making machine according to claim 5, characterized in that, The pneumatic slide rail (206) has a mounting bracket (207) fixedly connected to the outer side of the slider, and the mounting bracket (207) has a second cylinder (208) fixedly connected to both sides of the top, and the bottom of the two second cylinders (208) has a scraper (209) fixedly connected to them.

7. The precision pattern printing device for a bag making machine according to claim 6, characterized in that, The top of the lifting plate (204) has mounting holes at the two scrapers (209), and a screen printing film (205) is fixedly connected to the mounting holes, and the screen printing film (205) is compatible with the two scrapers (209).

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