Device for expanding flexographic printing roller into intermittent compounding

Abstract

The utility model discloses a device for expanding a flexographic printing roller into intermittent compounding, which comprises a printing roller, two side plates are arranged above the printing roller, a compression roller and a swing frame are mounted between the two side plates, the compression roller and the printing roller are identical in outer diameter, two guide rollers are mounted on the swing frame, the peripheral walls of the two guide rollers are close to each other, and the peripheral walls of the two guide rollers are close to each other. The pressing roller and the printing roller are adjustably kept in a pressed state or a separated state through the handle, the two sides of the swing frame are rotationally installed on the side plates through end shafts respectively, the vertical position between one end shaft and the side plate can be adjusted through a hand wheel, and therefore the angle of the two guide rollers is adjusted. Therefore, the technical purposes of providing high-quality intermittent compounding by the printing roller, ensuring stable paper feeding and improving the printing quality during label printing are achieved.

Description

Technical Field

[0001] The utility model relates to the field of printing machines, in particular to a device for expanding a flexographic printing roller into an intermittent composite device. Background Art

[0002] A flexographic printing press is a device used for printing. The flexographic printing press uses highly fluid ink, which is transferred to the image and text part of the printing plate by the ink fountain rubber roller, the printing roller and the anilox roller, and then the pressure roller applies printing pressure to transfer the ink on the printing plate to the substrate, and finally the printing process is completed through the drying surface.

[0003] The flexographic printing roller plays a vital role in the flexographic printing process. Its main functions include: 1. Providing ink transfer: The printing roller cooperates with the anilox roller to evenly apply a certain thickness of ink layer on the image part of the printing plate. The shape, size and depth of the ink hole of the anilox roller can control the amount of ink transfer to achieve the required ink layer thickness. 2. Ensure printing quality: Under the pressure of the impression cylinder, the printing roller clearly transfers the pattern on the surface of the printing plate to the printing material.

[0004] When printing label materials, the label's printing paper needs to be laminated with the base paper, and at this time the printing press becomes an intermittent, full-rotary flexographic printing press. Therefore, the printing roller needs to bear the intermittent retraction lamination between the base paper and the printing paper. The intermittent retraction paper feeding method is mainly to make the intervals between the printed patterns more compact and improve the utilization efficiency of the printing paper. The traditional full-rotary printing press feeds the paper directly without intermittent retraction. The printing roller only needs to cooperate with a guide roller. When using the intermittent full-rotary method, the retracted printing paper is prone to offset and instability, resulting in the printed pattern being not accurately positioned when printed on the printing paper, greatly affecting the printing quality. Utility Model Content

[0005] In order to solve the above problems, the utility model provides a device for expanding the flexographic printing roller into an intermittent compounding device, the purpose of which is that when printing labels, the printing roller provides higher quality intermittent compounding, ensures stable paper feeding and improves printing quality.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for expanding a flexographic printing roller into an intermittent compound, comprising a printing roller, two side plates are arranged above the printing roller, a pressure roller and a swing frame are installed between the two side plates, two guide rollers are installed on the swing frame, the peripheral walls of the two guide rollers are close to each other, the pressure roller can be adjusted to maintain a pressed state or a separated state with the printing roller through a handle, the two sides of the swing frame are rotatably mounted on the side plates through end shafts, one of the end shafts and the side plate can be adjusted up and down through a hand wheel, thereby adjusting the angles of the two guide rollers.

[0007] Two flat plates are protruding on the side walls of the side plate, an adjusting shaft passes through the two flat plates, one end of the adjusting shaft is connected to the hand wheel, a threaded hole is set on one of the end shafts of the swing frame, the other end of the adjusting shaft is threadedly connected to the threaded hole, a positioning retaining ring is arranged at the position of the adjusting shaft between the two flat plates, and a first clamping spring is arranged between the positioning retaining ring and one of the flat plates.

[0008] The pressure roller is connected to an axle rod through a bearing, and a handle is arranged on the axle rod. The two ends of the axle rod are respectively formed into straight grooves with missing materials by milling and turning. The side plate is provided with an axial hole for the axle rod to be inserted, and a top block adapted to the straight groove is installed at the axial hole. The upper end surface of the top block is a flat surface, and a second clamping spring is arranged between the inner wall of the axial hole and the end shaft. The end of the handle is connected to the axle rod.

[0009] The outer diameters of the pressing roller and the printing roller are the same.

[0010] The beneficial effects of the utility model are as follows: the printing paper and the base paper can be compounded and output between the printing roller and the pressure roller, and then output through the two guide rollers on the swing frame, and when the compounded material passes between the two guide rollers, the paper feeding can be stabilized during the intermittent retraction process, and the paper feeding angle can be timely adjusted by the hand wheel to make it smoother, and the problem of paper feeding deviation will not occur, and the handle can timely adjust the pressure roller and the printing roller to maintain a pressed or separated state, so that the state can be switched according to different work needs, thus achieving the technical purpose of providing a higher quality intermittent compounding of the printing roller when printing labels, ensuring stable paper feeding, and improving printing quality.

[0011] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a side view of a specific embodiment of the utility model;

[0013] Figure 2 for Figure 1 Sectional view of AA in the middle;

[0014] Figure 3 It is a partial stereogram of a specific implementation mode of the utility model;

[0015] Figure 4 It is a cross-sectional view of the handle installation structure in a specific implementation manner of the utility model.

[0016] In the figure, 1 is a printing roller; 2 is a side plate; 3 is a pressure roller; 4 is a swing frame; 5 is a handle; 50 is a hand wheel; 6 is an adjustment shaft; 7 is a positioning retaining ring; 8 is a first clamping spring; 9 is a second clamping spring; 10 is a guide roller; 31 is a shaft rod; 41 is an end shaft; 21 is a flat plate; 22 is an axis hole; 23 is a top block; and 24 is a straight groove. DETAILED DESCRIPTION

[0017] The present invention is specifically described below through embodiments, which are only used to further illustrate the present invention and should not be construed as limiting the protection scope of the present invention.

[0018] like Figure 1 — Figure 4 As shown, the present embodiment discloses a device for expanding a flexographic printing roller into an intermittent composite device, comprising a printing roller 1, two side plates 2 are arranged above the printing roller 1, a pressure roller 3 and a swing frame 4 are installed between the two side plates 2, the pressure roller 3 and the printing roller 1 have the same outer diameter, so that the pressing pressure of the passing printing paper and the base paper can be the same, and the composite effect is better, two guide rollers 10 are installed on the swing frame 4, the peripheral walls of the two guide rollers 10 are close to each other, the pressure roller 3 can be adjusted to maintain a pressed state or a separated state with the printing roller 1 through a handle 5, in full-rotary printing, the pressure roller 3 and the printing roller 1 can be separated, in intermittent and full-rotary printing, the pressure roller 3 and the printing roller 1 are pressed, the two sides of the swing frame 4 are rotatably installed on the side plates 2 through end shafts 41, one of the end shafts 41 and the side plate 2 can be adjusted up and down through a hand wheel 50, so as to adjust the angle of the two guide rollers 10.

[0019] Specific as Figure 2 As shown, two upper and lower parallel flat plates 21 are convexly provided on the side wall of the side plate 2, an adjusting shaft 6 passes through the two flat plates 21, one end of the adjusting shaft 6 is connected to the hand wheel 50, a threaded hole is provided on one of the end shafts 41 of the swing frame 4, the other end of the adjusting shaft 6 is threadedly connected with the threaded hole, a positioning retaining ring 7 is arranged at the position of the adjusting shaft 6 between the two flat plates 21, and a first clamping spring 8 is arranged between the positioning retaining ring 7 and one of the flat plates 21, so that the shaft string of the adjusting shaft 6 can be effectively prevented, and the stability of the adjustment can be improved, and the hand wheel 50 can directly control the adjusting shaft 6 to adjust the swing angle of the swing frame 4, and then adjust the paper feeding angle of the passing material, so as to achieve the purpose of timely correction of paper feeding.

[0020] Specific as Figure 4As shown, the pressure roller 3 is connected to a shaft rod 31 through a bearing, and a handle 5 is arranged on the shaft rod 31. The two ends of the shaft rod 31 are respectively formed into a straight groove 24 with a missing material by milling and turning. The side plate 2 is provided with an axial hole 22 for the shaft rod 31 to be inserted. The bottom surface of the shaft hole 22 is designed to be a straight bottom surface or a top block 23 adapted to the straight groove 24 is installed at the shaft hole 22. The upper end surface of the top block 23 is a straight surface. A second compression spring 9 is arranged between the inner wall of the shaft hole 22 and the end shaft 41, so that the shaft rod 31 can be more stably inserted into the main shaft hole 22. The rod end of the handle 5 is passed through The sleeve block is connected to the shaft 31. During the intermittent retract paper feeding printing process, the shaft 31 is rotated by operating the handle 5 to make its straight groove 24 contact and cooperate with the flat surface of the upper end of the top block 23, so that the pressure roller 3 and the printing roller 1 are close to or in contact. During full-rotary printing, when intermittent retract paper feeding printing is not required, the shaft 31 is rotated 90° by operating the handle 5 to make the straight groove 24 disengage from the top block 23, and the round surface of the shaft 31 contacts the flat surface of the upper end of the top block, and the pressure roller moves upward as a whole, so that the pressure roller 3 and the printing roller 1 are separated, and the operation is convenient and reliable.

[0021] By adopting the above technical scheme, the printing paper and the base paper can be compounded and output between the printing roller 1 and the pressure roller 3, and then output through the two guide rollers 10 on the swing frame 4. When the compounded material passes between the two guide rollers 10, the paper feeding can be stabilized during the intermittent retraction process. At the same time, the paper feeding angle can be adjusted in time by the hand wheel 50 to make it smoother and there will be no problem of paper feeding deviation. The handle 5 can timely adjust the pressure roller 3 and the printing roller 1 to maintain a pressed or separated state. In this way, the state can be switched according to different work needs. In this way, when printing labels, the printing roller 1 provides higher quality intermittent compounding, ensures stable paper feeding, and improves the technical purpose of printing quality, while effectively improving the scope of application of the printing machine.

[0022] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0023] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A device for expanding a flexographic printing roller into an intermittent composite device, comprising a printing roller, two side plates are arranged above the printing roller, and is characterized in that: A pressure roller and a swing frame are installed between the two side plates, and two guide rollers are installed on the swing frame. The peripheral walls of the two guide rollers are close to each other. The pressure roller can be adjusted to maintain a pressed state or a separated state with the printing roller through a handle. The two sides of the swing frame are rotatably installed on the side plates through end shafts respectively. The upper and lower positions of one end shaft and the side plate can be adjusted by a hand wheel, thereby adjusting the angles of the two guide rollers.

2. The device for expanding a flexographic printing roller into an intermittent composite according to claim 1, characterized in that: Two flat plates are protruding on the side walls of the side plate, an adjusting shaft passes through the two flat plates, one end of the adjusting shaft is connected to the hand wheel, a threaded hole is set on one of the end shafts of the swing frame, the other end of the adjusting shaft is threadedly connected to the threaded hole, a positioning retaining ring is arranged at the position of the adjusting shaft between the two flat plates, and a first clamping spring is arranged between the positioning retaining ring and one of the flat plates.

3. The device for expanding a flexographic printing roller into an intermittent composite according to claim 1, characterized in that: The pressure roller is connected to an axle rod through a bearing, and a handle is arranged on the axle rod. Straight grooves with missing materials are arranged at both ends of the axle rod respectively. An axial hole for inserting the axle rod is arranged on the side plate, and a top block matched with the straight groove is installed at the axial hole. The upper end surface of the top block is a flat surface, and a second clamping spring is arranged between the inner wall of the axial hole and the end shaft. The end of the handle is connected to the axle rod.

4. The device for expanding a flexographic printing roller into an intermittent composite according to claim 1, characterized in that: The outer diameters of the pressing roller and the printing roller are the same.

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