Glue spraying device for printing roller

Abstract

The utility model relates to a printing roller glue spraying device which comprises a frame body, a glue spraying seat, a first mounting seat and a second mounting seat, the glue spraying seat is slidably connected to the frame body in the vertical direction, the frame body is provided with a driving assembly for driving the glue spraying seat to slide, the first mounting seat is arranged below the frame body, and the second mounting seat is arranged below the frame body. The second mounting base is located above the glue spraying base, the driving assembly comprises a guide rod, a first threaded rod and a driving motor, the guide rod and the first threaded rod are vertically arranged in the axis direction, the two ends of the guide rod are arranged on the frame body, the two ends of the first threaded rod are rotationally connected to the frame body, and the driving motor is arranged on the frame body. The guide rod penetrates through the glue spraying seat in a sliding manner, the first threaded rod penetrates through the glue spraying seat in a threaded manner, and the driving motor is fixed on the frame body to drive the first threaded rod to rotate. The coating device has the effect of improving the coating uniformity.

Description

Technical Field

[0001] This application relates to the field of printing roller coating, and more particularly to a printing roller coating apparatus. Background Technology

[0002] When laser plate making, the printing roller needs to be coated with photosensitive emulsion first. The thickness of the photosensitive emulsion layer is usually 0.08-0.12mm. The uniform coating of photosensitive emulsion is beneficial to the engraving effect of laser engraving. Clear image edges are beneficial to the etching of the image structure of the printing roller, which is beneficial to the image accuracy of the printing roller surface, improves the subsequent printing quality, increases the ink transfer rate, and results in good printing effect.

[0003] Existing glue-coating devices typically involve mounting a printing roller on a frame, pouring glue into a scraper hopper, tilting the hopper so that the edge of the discharge port abuts against the circumference of the printing roller, and then driving the printing roller to rotate, thus coating the circumference of the printing roller with the glue in the scraper hopper. However, during the rotation of the printing roller, due to centrifugal force, glue that is not completely dried is easily thrown out, thus affecting the uniformity of coating. Utility Model Content

[0004] To improve the uniformity of coating, this application provides a coating device for a printing roller.

[0005] This application provides a printing roller coating device, which adopts the following technical solution:

[0006] A printing roller coating device includes a frame, a coating seat, a first mounting base, and a second mounting base. The coating seat is slidably connected to the frame in a vertical direction. The frame is provided with a driving assembly for driving the coating seat to slide. The driving assembly includes a guide rod, a first threaded rod, and a driving motor. The axes of the guide rod and the first threaded rod are both vertically oriented. Both ends of the guide rod are disposed on the frame, and both ends of the first threaded rod are rotatably connected to the frame. The guide rod slides through the coating seat, and the first threaded rod is threaded through the coating seat. The driving motor is fixed to the frame to drive the first threaded rod to rotate.

[0007] By adopting the above technical solution, the first threaded rod is driven to rotate by the drive motor. During the glue application process, the glue application seat moves steadily upward. Compared with the prior art, in the glue application process, the printing roller does not move. Instead, the glue is evenly applied by the movement of the glue application seat. The glue will not be thrown out due to centrifugal force, thereby improving the uniformity of glue application.

[0008] Optionally, the second mounting base is slidably connected to the frame in a vertical direction, and the frame is provided with a limiting component to limit the movement of the second mounting base.

[0009] Optionally, the adhesive base includes a fixed base, a sleeve ring, and a silicone ring. The fixed base is disposed on the first threaded rod and the guide rod, the sleeve ring is disposed at the end of the fixed base away from the frame, and the silicone ring is coaxially disposed on the inner wall of the sleeve ring.

[0010] By adopting the above technical solution, during the glue application process, the glue is poured into the sleeve ring, and the fixing seat drives the sleeve ring and silicone ring to move upward. During the movement, the silicone ring will scrape the glue adhering to the outer peripheral wall of the printing roller, so that the glue is evenly coated on the printing roller.

[0011] Optionally, the sleeve ring is provided with a liquid receiving groove above the silicone ring, and the bottom of the liquid receiving groove is provided with a plurality of first liquid outlet holes evenly distributed, and the liquid receiving groove is provided with a closing plate to close the plurality of first liquid outlet holes.

[0012] By adopting the above technical solution, when glue is directly introduced into the sleeve ring, since the glue is poured in from one side, it takes a certain amount of time for the glue to flow to the other side of the sleeve ring. If the glue-spraying seat is moved at this time, it is easy to cause uneven coating. Therefore, a liquid receiving groove is set on the sleeve ring. When applying glue, the first liquid outlet is closed by the closing plate, and then the glue is poured into the liquid receiving groove. After the glue is evenly distributed in the liquid receiving groove, the first liquid outlet is opened so that the glue can flow downward evenly, thereby being evenly coated on the printing roller through the silicone ring.

[0013] Optionally, the closing plate has a plurality of second liquid outlet holes evenly distributed therefrom, and the first liquid outlet holes and the second liquid outlet holes are staggered.

[0014] By adopting the above technical solution, a number of second liquid outlet holes are provided on the closing plate. Since the first liquid outlet hole and the second liquid outlet hole are staggered, when the closing plate is attached to the bottom wall of the liquid receiving tank, the closing plate can close the first liquid outlet hole. When it is lifted, the liquid on the upper part of the closing plate can fall evenly into the liquid receiving tank through the second liquid outlet hole.

[0015] Optionally, a control lever is provided on the upper part of the closing plate, and a connecting plate is provided on the inner wall of the liquid receiving tank, with the control lever slidingly passing through the connecting plate.

[0016] By adopting the above technical solution, a control lever is provided on the closing plate, which can be used to easily lift the closing plate.

[0017] Optionally, the connecting plate is slidably connected to a locking plate along its length, and the middle part of the operating lever has a locking groove for locking the locking plate.

[0018] By adopting the above technical solution, a locking plate is provided on the connecting plate, which can limit the operation lever.

[0019] Optionally, the longitudinal section of the locking groove is semi-circular, and the end of the locking plate near the operating lever is adapted to the cross section of the locking groove.

[0020] In summary, this application includes at least one of the following beneficial technical effects:

[0021] 1. The first threaded rod is driven to rotate by a drive motor. During the glue coating process, the glue coating seat moves upward in a stable manner, so that the moving speed of the glue coating seat is relatively constant, thereby improving the uniformity of glue coating.

[0022] 2. When glue is directly poured into the sleeve ring, it takes a certain amount of time for the glue to flow to the other side of the sleeve ring since it is poured in from one side. Moving the glue application seat during this time can easily lead to uneven coating. Therefore, a liquid receiving tank is provided. After the glue is evenly distributed in the annular liquid receiving tank, the closing plate is pulled upward. The liquid at the top of the closing plate can fall evenly into the liquid receiving tank through the second liquid outlet, and then flow downward and be evenly coated on the printing roller through the silicone ring. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of Example 1;

[0024] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0025] Figure 3 This is a schematic diagram of the adhesive coating seat in Example 2;

[0026] Figure 4 yes Figure 3 Enlarged diagram of point B in the middle.

[0027] Explanation of reference numerals in the attached drawings: 1. Frame; 11. Mounting slot; 2. First mounting base; 3. Second mounting base; 31. Sliding block; 32. First sliding slot; 4. Adhesive base; 41. Fixing base; 42. Sleeve ring; 43. Silicone ring; 44. Liquid receiving slot; 45. Closing plate; 451. Control lever; 452. Locking slot; 46. Connecting plate; 461. Second sliding slot; 462. Spring; 47. Locking plate; 5. Drive assembly; 51. First threaded rod; 52. Guide rod; 53. Drive motor; 6. Limiting assembly; 61. Second threaded rod; 62. Knob. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0029] Example 1:

[0030] Embodiment 1 of this application discloses a glue-applying device for a printing roller, referring to... Figure 1 and Figure 2 The system includes a frame 1, a glue-applying seat 4, a first mounting seat 2, and a second mounting seat 3. The first mounting seat 2 is fixedly connected to the lower part of the frame 1, and the glue-applying seat 4 is located above the first mounting seat 2. The glue-applying seat 4 is slidably connected to the frame 1 in a vertical direction. The second mounting seat 3 is located above the glue-applying seat 4. A mounting groove 11 is provided in the middle of the frame 1. The length direction of the mounting groove 11 is vertical. Sliding blocks 31 are provided on both sides of the second mounting seat 3 along the width direction of the frame 1. A first sliding groove 32 is provided through the upper surface of the sliding block 31. The edges of the sliding frame 1 located on both sides of the mounting groove 11 are slidably engaged in the first sliding groove 32, so that the second mounting seat 3 is slidably connected to the frame 1 in a vertical direction.

[0031] Reference Figure 1 and Figure 2 The frame 1 is provided with a limiting component 6 for limiting the second mounting base 3. The limiting component 6 includes a second threaded rod 61 and a knob 62. The second threaded rod 61 is threaded through the sliding block 31. One end of the second threaded rod 61 passes through the first sliding groove 32 and abuts against the side of the frame 1. The knob 62 is coaxially fixedly connected to the side of the second threaded rod 61 away from the sliding block 31.

[0032] Reference Figure 1 and Figure 2 The frame 1 is equipped with a drive assembly 5 for sliding the glue-coating seat 4. The drive assembly 5 includes a guide rod 52, a first threaded rod 51, and a drive motor 53. The guide rod 52 and the first threaded rod 51 are both located in the mounting groove 11. The axial directions of the guide rod 52 and the first threaded rod 51 are both vertical. Both ends of the guide rod 52 are fixedly connected to the frame 1. Both ends of the first threaded rod 51 are rotatably connected to the frame 1. The drive motor 53 is fixedly connected to the upper surface of the frame 1. The output shaft of the drive motor 53 is connected to the first threaded rod 51 through a transmission assembly to drive the first threaded rod 51 to rotate.

[0033] Reference Figure 1 and Figure 2 The adhesive base 4 includes a fixed base 41, a sleeve ring 42, and a silicone ring 43. A guide rod 52 slides through the fixed base 41, and a first threaded rod 51 is threaded through the fixed base 41 to drive the fixed base 41 to move up and down. The sleeve ring 42 is fixedly connected to the end of the fixed base 41 away from the frame 1, and the silicone ring 43 is coaxially fixedly connected to the inner wall of the sleeve ring 42. The silicone ring 43, the first mounting base 2, and the second mounting base 3 are coaxially arranged.

[0034] The implementation principle of Embodiment 1 of this application is as follows: the first threaded rod 51 is driven to rotate by the drive motor 53. During the glue coating process, the glue coating seat 4 is driven to move upward in a stable manner, so that the moving speed of the glue coating seat 4 is relatively constant, thereby improving the uniformity of glue coating.

[0035] Example 2:

[0036] The difference between Example 2 and Example 1 is that, referring to Figure 3 and Figure 4 The sleeve ring 42 is fixedly connected to the liquid receiving groove 44 above the silicone ring 43. The liquid receiving groove 44 is arranged around the inner wall of the sleeve ring 42. Several first liquid outlet holes are evenly distributed at the bottom of the liquid receiving groove 44. The liquid receiving groove 44 is provided with a closing plate 45 for closing the several first liquid outlet holes.

[0037] Reference Figure 3 and Figure 4 The closing plate 45 has several second liquid outlet holes evenly distributed, with the first and second liquid outlet holes staggered. An operating lever 451 is fixedly connected to the upper part of the closing plate 45. The axis of the operating lever 451 is vertically oriented, and there are two operating levers 451 arranged symmetrically around the center of the closing plate 45. Two connecting plates 46, corresponding to the two operating levers 451 respectively, are fixedly connected to the inner wall of the upper wall of the liquid receiving tank 44. The operating levers 451 slide through the connecting plates 46.

[0038] Reference Figure 3 and Figure 4 The connecting plate 46 has a second sliding groove 461, the length of which is parallel to the length of the connecting plate 46. The connecting plate 46 has a locking plate 47 that is slidably connected to the second sliding groove 461. The operating lever 451 has a locking groove 452 in its middle for locking the locking plate 47. The locking groove 452 has a semi-circular longitudinal section, and the end of the locking plate 47 near the operating lever 451 is adapted to the cross-section of the locking groove 452. The connecting plate 46 has a spring 462 that forces the locking plate 47 to slide closer to the operating lever 451. The spring 462 is located within the second sliding groove 461, with one end fixedly connected to the locking plate 47 and the other end fixedly connected to the groove wall of the second sliding groove 461.

[0039] The implementation principle of Example 2 is as follows: When glue is directly introduced into the sleeve ring 42, since the glue is poured in from one side, it takes a certain amount of time for the glue to flow to the other side of the sleeve ring 42. If the glue-applying seat 4 is moved at this time, it is easy to cause uneven coating. Therefore, a liquid receiving groove 44 is provided in the sleeve ring 42. When coating, the glue is poured into the liquid receiving groove 44. After standing for a period of time, the glue is evenly distributed in the annular liquid receiving groove 44. Then, the closing plate 45 is pulled upward. The liquid in the upper part of the closing plate 45 can fall evenly into the liquid receiving groove 44 through the second liquid outlet and flow downward between the silicone ring 43 and the outer peripheral wall of the printing roller. Then, the glue-applying seat 4 is moved to apply the glue to the printing roller.

[0040] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A roll coating device for a printing plate, characterized in that: The utility model provides a kind of glue pouring frame, including frame body (1), glue pouring seat (4), first mounting seat (2) and second mounting seat (3), the glue pouring seat (4) is slidably connected on frame body (1) along vertical direction, the frame body (1) is provided with the drive assembly (5) of driving glue pouring seat (4) to slide, the first mounting seat (2) is arranged below frame body (1), the second mounting seat (3) is above glue pouring seat (4), the drive assembly (5) includes guide rod (52), first threaded rod (51) and drive motor (53), the axis direction of guide rod (52) and first threaded rod (51) is vertically arranged, both ends of guide rod (52) are arranged on frame body (1), both ends of first threaded rod (51) are rotatably connected to frame body (1), guide rod (52) is slidably arranged in glue pouring seat (4), first threaded rod (51) is threadedly arranged in glue pouring seat (4), drive motor (53) is fixed on frame body (1) to drive first threaded rod (51) to rotate.

2. A roll coating apparatus according to claim 1, wherein: The second mounting seat (3) is slidably connected to the frame body (1) along the vertical direction, and the frame body (1) is provided with a limiting assembly (6) for limiting the second mounting seat (3).

3. A system for applying a solution to a printing plate as defined in claim 1, wherein: The glue pouring seat (4) includes a fixed seat (41), a sleeve ring (42), and a silica gel ring (43). The fixed seat (41) is arranged on the first threaded rod (51) and the guide rod (52). The sleeve ring (42) is arranged at one end of the fixed seat (41) away from the frame body (1). The silica gel ring (43) is coaxially arranged on the inner wall of the sleeve ring (42).

4. A system for coating a printing plate as claimed in claim 3, wherein: The sleeve ring (42) is arranged with a liquid receiving groove (44) above the silica gel ring (43). The bottom of the liquid receiving groove (44) is uniformly provided with a plurality of first liquid outlets. The liquid receiving groove (44) is provided with a closing plate (45) for closing the plurality of first liquid outlets.

5. A system for coating a printing plate as claimed in claim 4, wherein: The closing plate (45) is uniformly provided with a plurality of second liquid outlets. The first liquid outlets and the second liquid outlets are arranged in a staggered manner.

6. A system for coating a printing plate as claimed in claim 5, wherein: The upper part of the closing plate (45) is provided with a control rod (451). The inner wall of the liquid receiving groove (44) is provided with a connecting plate (46). The control rod (451) is slidably arranged in the connecting plate (46).

7. A system for coating a printing plate as claimed in claim 6, wherein: The connecting plate (46) is slidably connected with a clamping plate (47) along the length direction. The middle part of the control rod (451) is provided with a clamping groove (452) for clamping the clamping plate (47).

8. A system for coating a printing plate as claimed in claim 7, wherein: The longitudinal section of the clamping groove (452) is in a semicircular shape. The end of the clamping plate (47) close to the control rod (451) is adapted to the cross section of the clamping groove (452).

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