Correcting and positioning device of packaging bag printing machine

Abstract

The utility model discloses a correcting and positioning device of a packaging bag printing machine, relates to the technical field of packaging bag printing machines, and aims to solve the technical problem that the printing position deviates due to the fact that the current rolling type plastic packaging bag printing machine is lack of a correcting and positioning device and the moving position of a plastic packaging bag is not easy to change in the printing process. Comprising a printing machine body composed of a bottom plate, an unwinding piece, a machine frame, a tensioning roller, a printing assembly and a winding piece, and supporting pieces are fixedly arranged on the front frame wall and the rear frame wall of the top of the machine frame. And the correcting and positioning assembly can fix the moving position of the plastic packaging bag, and the probability that the side edges of the plastic packaging bag are pressed to be turned over can be reduced in cooperation with clamping and limiting of the limiting assembly. The device has the advantage of correcting and positioning the moving position of the plastic packaging bag.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging bag printing machines, and more specifically to a correction and positioning device for packaging bag printing machines. Background Art

[0002] Printing is the process of transferring ink from originals such as text, pictures, photos, anti-counterfeiting, etc. to the surface of materials such as paper, textiles, plastics, leather, PVC, PC, etc. through processes such as plate making, inking, and pressurization. Printing machines are often used to print labels on packaging bags during production and processing.

[0003] At present, plastic packaging bag printing generally prints on the surface during the rewinding process, and a tensioning mechanism is used to keep the plastic packaging bag moving smoothly during the rewinding process. However, the existing printing machine for plastic packaging bag printing lacks a correction and positioning device. When the installation position of the unwinding structure deviates, the printing position of the plastic packaging bag will be offset, affecting the printing quality. In view of this, we propose a correction and positioning device for a packaging bag printing machine. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art, meet actual needs, and provide a correction and positioning device for a packaging bag printing machine to solve the technical problem that the current roll-up plastic packaging bag printing machine lacks a correction and positioning device, which makes it difficult to change the moving position of the plastic packaging bag during the printing process, resulting in deviations in the printing position.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a correction and positioning device for a packaging bag printing machine, comprising a printing machine body composed of a bottom plate, a reeling member, a frame, a tensioning roller, a printing assembly and a reeling member, support members are fixedly arranged on the front and rear frame walls of the top of the frame, a plurality of correction and positioning assemblies are fixedly arranged in an array on the opposite sides of the two support members, and a limiting assembly that fits the side of the correction and positioning assembly is fixedly arranged on the opposite sides of the two support members;

[0006] The correction and positioning assembly comprises two support plates, between which a positioning round block is rotatably arranged;

[0007] The limiting assembly comprises two groups of symmetrically arranged fixing rods, and a limiting sleeve is installed between the fixing rods of each group in a transversely movable manner, and the limiting sleeve is in close contact with the positioning round block.

[0008] The utility model can limit the position of the plastic packaging bag moved to the printing component and keep it centered by designing the support, the correction and positioning component and the limit component structure. The correction and positioning component can fix the moving position of the plastic packaging bag, and the clamping and limiting of the limit component can reduce the probability of the side of the plastic packaging bag being pressed and flanging, and maintain the stability of movement. Such structural coordination can make the printing position of the plastic packaging bag centered, and reduce the problem of deviation affecting the printing quality.

[0009] Preferably, the side surfaces of the two support plates close to the positioning round blocks are rotatably provided with first balls, the side surfaces of the positioning round blocks close to the support plates are provided with connecting grooves, and the connecting grooves are adapted to be combined with the first balls.

[0010] Preferably, a plurality of grooves are arranged in a ring array on the outer wall of the positioning circular block, and the groove surfaces of the grooves are arc surfaces.

[0011] Preferably, a filling cavity for containing coolant is provided inside the positioning round block, an injection hole communicating with the filling cavity is opened on the top of the positioning round block, and a sealing plug is installed in the injection hole.

[0012] Preferably, a pulley that fits the inner wall of the limiting sleeve is rotatably mounted on the side end of the fixing rod, and a plurality of second balls are rotatably mounted on one side of the pulley that fits the limiting sleeve.

[0013] Preferably, a plurality of wave grooves penetrating the side wall are equidistantly formed on one side of the limiting sleeve.

[0014] Preferably, the support member comprises a fixing plate, two electric push rods are fixedly provided on the plate wall of the fixing plate, a mounting plate is fixedly connected between the telescopic ends of the two electric push rods, and the support plate and the fixing rod are both fixedly provided on the mounting plate.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The utility model can limit the position of the plastic packaging bag moved to the printing component and keep it centered by designing the support, correction and positioning components and limit component structures. The correction and positioning components can fix the moving position of the plastic packaging bag, and the clamping and limiting components can reduce the probability of the side of the plastic packaging bag being pressed and flanging, and maintain the stability of movement. Such structural coordination can make the printing position of the plastic packaging bag centered and reduce the problem of offset affecting the printing quality.

[0017] 2. The utility model also makes the positioning circle rotatable so that it can rotate when it contacts and rubs with the plastic packaging bag, thereby reducing the friction coefficient with the movement of the plastic packaging bag and improving the protection of the side. Similarly, the rotatable design of the upper limit belt of the limit assembly can reduce the friction resistance in contact with the surface of the plastic packaging bag, reduce the probability of temperature increase caused by friction at the same position, and reduce the impact of high temperature on the quality of the plastic packaging bag. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0019] Figure 2 It is a partial structural schematic diagram of the utility model;

[0020] Figure 3 It is a partial structural decomposition schematic diagram of the utility model;

[0021] Figure 4 It is a cutaway schematic diagram of the positioning circular block structure in the utility model;

[0022] Figure 5 It is an enlarged schematic diagram of the structure of part A in the utility model.

[0023] Explanation of the numbers in the figure: 1. Printing machine body; 101. Bottom plate; 102. Unwinding member; 103. Frame; 104. Tensioning rod; 105. Printing assembly; 106. Rewinding member; 2. Support member; 201. Fixed plate; 202. Electric push rod; 203. Mounting plate; 3. Correction and positioning assembly; 301. Support plate; 302. First ball; 303. Positioning block; 304. Connecting groove; 305. Groove; 306. Filling cavity; 307. Injection hole; 4. Limiting assembly; 401. Fixed rod; 402. Pulley; 403. Limiting belt; 404. Second ball; 405. Wave groove. DETAILED DESCRIPTION

[0024] like Figures 1 to 5 As shown, the utility model relates to a correction and positioning device for a packaging bag printing machine, including a printing machine body 1 composed of a base plate 101, a unwinding member 102, a frame 103, a tensioning roller 104, a printing component 105 and a winding member 106, support members 2 are fixedly provided on the front and rear frame walls on the top of the frame 103, a plurality of correction and positioning components 3 are fixedly arranged in an array on the opposite sides of the two support members 2, and a limiting component 4 that is in contact with the side of the correction and positioning component 3 is fixedly provided on the opposite sides of the two support members 2. The cooperation between the correction and positioning component 3 and the limiting component 4 arranged on the support member 2 can squeeze and limit the two side edges of the plastic packaging bag, so that the plastic packaging bag moved into the printing component 105 remains in a centered state, reducing the probability of offset affecting printing.

[0025] The correction and positioning assembly 3 includes two support plates 301, between which a positioning round block 303 is rotatably provided; by means of a rotatable installation, the positioning round block 303 can be caused to rotate by itself due to the friction force when the plastic packaging bag moves, thereby reducing the friction resistance between the plastic packaging bag and the plastic packaging bag, improving the protection of the side of the plastic packaging bag, and the ball limiter can improve the lubricity of the rotation.

[0026] The limiting assembly 4 includes two groups of symmetrically arranged fixing rods 401, and a limiting sleeve 403 is installed between the single group of fixing rods 401 in a transversely movable manner, and the limiting sleeve 403 is in close contact with the positioning round block 303; the rotatably installed limiting sleeve 403 can rotate when rubbed by the plastic packaging bag, thereby reducing the probability of repeated friction at the same position increasing heat and reducing the probability of damage to the plastic packaging bag.

[0027] In an embodiment of the utility model, a first ball 302 is rotatably provided on the side surfaces of the two support plates 301 close to the positioning block 303, a connecting groove 304 is provided on the side surfaces of the positioning block 303 close to the support plate 301, and the connecting groove 304 is adapted to be combined with the first ball 302; through the cooperation between the first ball 302 and the connecting groove 304, the rotation resistance of the positioning block 303 can be reduced, thereby facilitating self-rotation.

[0028] In an embodiment of the utility model, a plurality of grooves 305 are arranged in a circular array on the outer wall of the positioning block 303, and the groove surface of the groove 305 is an arc surface; the design of the groove 305 can reduce the contact surface with the side of the plastic packaging bag, thereby reducing the probability of friction increasing heat, and the arc surface maintains the smoothness of the inner surface of the groove 305.

[0029] In an embodiment of the utility model, a filling cavity 306 for containing coolant is provided inside the positioning block 303, an injection hole 307 connected to the filling cavity 306 is opened on the top of the positioning block 303, and a sealing plug is installed in the injection hole 307; the coolant can be an antifreeze liquid, which is used to keep the surface temperature of the positioning block 303 stable, reduce the problem of increased heat due to friction, and reduce the impact on the quality of the plastic packaging bag.

[0030] In an embodiment of the utility model, a pulley 402 is rotatably installed on the side end of the fixing rod 401 and is in contact with the inner wall of the limiting sleeve 403. The pulley 402 and the limiting sleeve 403 are rotated close to one side and are provided with a plurality of second balls 404. The design of the pulley 402 can reduce the resistance to the rotational movement of the rotating limiting sleeve 403, and the provision of the second balls 404 reduces the contact surface between the limiting sleeve 403 and both sides of the pulley 402.

[0031] In the embodiment of the utility model, a plurality of wave grooves 405 penetrating the side wall are equidistantly formed on one side of the limiting sleeve 403; the wave grooves 405 are designed to reduce the contact surface with the plastic packaging belt and lower the friction coefficient.

[0032] In an embodiment of the utility model, the support member 2 includes a fixed plate 201, on the plate wall of which two electric push rods 202 are fixedly provided, a mounting plate 203 is fixedly connected between the telescopic ends of the two electric push rods 202, and the support plate 301 and the fixed rod 401 are both fixedly provided on the mounting plate 203; the distance between the two can be conveniently adjusted through cooperation, so as to facilitate the correction and positioning of plastic packaging bags of different widths.

[0033] Working principle: This embodiment provides a correction and positioning device for a packaging bag printing machine. First, the correction and positioning component 3 and the limit component 4 are adjusted to a position consistent with the width of the plastic packaging bag through the support members 2 on both sides, and then the side end of the plastic packaging bag on the unwinding member 102 is placed between the two limit components 4 along the tensioning roller, so that the two sides are in contact with the correction and positioning components 3 on both sides, and then pass through the printing component 105 and combine with the winding member 106. After the installation is completed, the printing and winding work can be carried out. During the printing process, the position of the correction and positioning component 3 is fixed to ensure that the position of the plastic packaging bag is stable during the winding movement, so that the part entering the interior of the printing component 105 It can be centered, reduce the probability of deviation, and maintain good printing quality. At the same time, the design of the rotating structure on the correction and positioning component 3 can automatically rotate when it contacts the plastic packaging bag and generates friction, thereby reducing the continuous friction of the plastic packaging bag on the same side, reducing wear, and increasing the effect of limiting protection. Similarly, the design of the rotating structure on the limiting component 4 can also drive the limiting sleeve 403 to move under the influence of friction, change the contact surface with the plastic packaging bag, and reduce the occurrence of friction overheating. In this way, the impact on the quality of the plastic packaging bag is reduced while maintaining the limit. The design of this overall structure can correct the printing position of the plastic packaging bag while reducing the impact on it.

[0034] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A correction and positioning device for a packaging bag printing machine, characterized in that: The invention comprises a printing machine body (1) composed of a bottom plate (101), a reeling member (102), a frame (103), a tensioning roller (104), a printing assembly (105) and a reeling member (106); support members (2) are fixedly arranged on the front and rear frame walls of the top of the frame (103); a plurality of correction and positioning assemblies (3) are fixedly arranged in an array on the opposite sides of the two support members (2); and a limit assembly (4) which is in contact with the side of the correction and positioning assembly (3) is fixedly arranged on the opposite sides of the two support members (2); The correction and positioning assembly (3) comprises two support plates (301), and a positioning round block (303) is rotatably arranged between the two support plates (301); The limiting assembly (4) comprises two groups of symmetrically arranged fixing rods (401), and a limiting sleeve (403) is installed between the fixing rods (401) in a transversely movable manner, and the limiting sleeve (403) is in close contact with the positioning round block (303).

2. The correction and positioning device for a packaging bag printing machine according to claim 1, characterized in that: The first ball (302) is rotatably provided on the side surfaces of the two support plates (301) close to the positioning round block (303), and a connecting groove (304) is provided on the side surfaces of the positioning round block (303) close to the support plate (301), and the connecting groove (304) is adaptively combined with the first ball (302).

3. The correction and positioning device for a packaging bag printing machine according to claim 1, characterized in that: A plurality of grooves (305) are arranged in a circular array on the outer wall of the positioning circular block (303), and the groove surface of the groove (305) is an arc surface.

4. The correction and positioning device for a packaging bag printing machine according to claim 1, characterized in that: A filling cavity (306) for containing cooling liquid is provided inside the positioning circular block (303), an injection hole (307) communicating with the filling cavity (306) is provided on the top of the positioning circular block (303), and a sealing plug is installed in the injection hole (307).

5. The correction and positioning device for a packaging bag printing machine according to claim 1, characterized in that: A pulley (402) that fits the inner wall of the limiting sleeve (403) is rotatably mounted on the side end of the fixing rod (401), and a plurality of second balls (404) are rotatably mounted on one side of the pulley (402) that is close to the limiting sleeve (403).

6. The correction and positioning device for a packaging bag printing machine according to claim 1, characterized in that: One side of the limiting sleeve (403) is provided with a plurality of wave grooves (405) which penetrate the side wall at equal intervals.

7. The correction and positioning device for a packaging bag printing machine according to claim 1, characterized in that: The support member (2) comprises a fixing plate (201), two electric push rods (202) are fixedly arranged on the plate wall of the fixing plate (201), a mounting plate (203) is fixedly connected between the telescopic ends of the two electric push rods (202), and the support plate (301) and the fixing rod (401) are both fixedly arranged on the mounting plate (203).

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