Split double-sided double-color offset press

Abstract

The utility model discloses a split double-sided bicolor offset press, which relates to the technical field of offset printing equipment, and comprises a double-sided offset press body, a drying mechanism is fixedly arranged at the bottom of the double-sided offset press body, and the drying mechanism is used for drying printed paper; the drying mechanism comprises a drying box, two heating covers are arranged in the drying box, and the two heating covers are symmetrically distributed on the inner bottom wall and the inner top wall of the drying box. The drying mechanism and the cooling component are arranged at the bottom of the double-sided double-color offset press, so that paper printed by the offset press can be pre-cooled by the cooling component, and the surface of the paper is ventilated and cooled by the vent holes in the surface of the strip-shaped ventilation shell, so that pigment on the surface of the paper is dried and solidified step by step; therefore, the situation that pigment cracks easily caused by direct drying can be avoided, then the multiple heating holes in the surface of the heating cover are used for heating and drying the paper in a large range, and the drying effect on the printing paper is improved.

Description

Technical Field

[0001] This utility model relates to the field of offset printing equipment technology, and in particular to a double-sided, two-color offset printing machine. Background Technology

[0002] Offset printing machines are a type of planographic printing machine. During printing, the printed image is first printed onto the rubber roller from the printing plate, and then transferred from the rubber roller to the paper. There are many types of offset printing machines on the market, and a double-sided, two-color offset printing machine is also a type of offset printing machine.

[0003] Patent document CN113085365B discloses a double-sided, two-color offset printing press, including a main body and an ink drying device. The ink drying device includes a heat preservation box mounted on the main body, containing two sets of centrally symmetrical electric heating rods. A waste heat recovery device includes a waste heat recovery machine located on one side of the main body and a flexible hose fixedly installed on the top surface of the heat preservation cover. This invention enables drying operations while simultaneously recovering and utilizing excess heat, providing convenience to the user.

[0004] The double-sided, two-color offset printing machine described in the above patent documents, in actual use, directly feeds the paper into the drying chamber of the insulated box for drying. However, since the ink on the surface of the paper is not completely dry immediately after printing, directly baking at high temperature without pre-cooling the paper can easily affect the printing effect. Therefore, it is necessary to improve the above-mentioned double-sided, two-color offset printing machine to address these problems. Utility Model Content

[0005] This utility model discloses a double-sided, two-color offset printing machine. To achieve the above objectives, this utility model adopts the following technical solution:

[0006] A double-sided, two-color offset printing machine includes a double-sided offset printing machine body, and a drying mechanism is fixedly installed at the bottom of the double-sided offset printing machine body. The drying mechanism is used to dry the printed paper.

[0007] The drying mechanism includes a drying chamber, inside which are arranged two heating covers. The two heating covers are symmetrically distributed on the inner bottom wall and inner top wall of the drying chamber. Several electric heating tubes are fixedly installed on the inner wall of the heating covers, and several heating holes are opened on the surfaces of the two heating covers that are close to each other.

[0008] A cooling assembly is provided on the left side of the drying oven and the double-sided offset printing machine body. The cooling assembly includes a side shell, and strip-shaped ventilation shells are fixedly provided on the front and rear inner walls of the side shell. An air pump is provided on the top of the side shell.

[0009] The drying oven is equipped with a cutting mechanism, which includes a limiting fixing seat fixedly connected to the inner wall of the drying oven. The surface of the limiting fixing seat is provided with a cutting hole, and the inner top wall of the cutting hole is provided with an installation groove. Two electric telescopic rods are fixedly installed inside the installation groove. The telescopic ends of the two electric telescopic rods are fixedly connected to a movable block, and a cutting blade is fixedly installed on the lower surface of the movable block.

[0010] In a preferred embodiment, a strip-shaped limiting groove is formed on the lower surface of the movable block, and a limiting movable plate is slidably provided on the inner wall of the strip-shaped limiting groove. A pressing block is fixedly connected to the bottom of the limiting movable plate, and the pressing block is used to position the paper during cutting.

[0011] In a preferred embodiment, the inner wall of the strip-shaped limiting groove is provided with a plurality of supporting springs, the bottom end of the supporting springs being fixedly connected to the top of the limiting movable plate, and the top end of the supporting springs being fixedly connected to the inner top wall of the strip-shaped limiting groove.

[0012] In a preferred embodiment, two feeding rollers and two discharging rollers are rotatably connected between the front and rear inner walls of the drying chamber. The two feeding rollers and the discharging rollers are symmetrically distributed vertically, and the feeding rollers and the discharging rollers are symmetrically distributed on the left and right sides of the cutting mechanism.

[0013] In a preferred embodiment, two transmission boxes are fixedly arranged on the front of the drying oven. A drive motor is fixedly mounted on the surface of the transmission box. The output shaft of the drive motor extends into the interior of the transmission box and is fixedly connected to a drive gear. A driven gear is rotatably arranged inside the transmission box, and the drive gear meshes with the driven gear.

[0014] In a preferred embodiment, one end of both the feed roller and the discharge roller extends into the interior of the transmission box, and the ends of the two feed rollers and the discharge roller mesh with the drive gear and the driven gear, respectively.

[0015] In a preferred embodiment, a plurality of limiting support rollers are rotatably connected between the front and rear inner walls of the drying oven, and the plurality of limiting support rollers are evenly distributed in groups of two between the two heating covers.

[0016] In a preferred embodiment, the output end of the air pump is fixedly provided with a diverter pipe, the end of the diverter pipe away from the air pump extends into the interior of the side shell and is fixedly connected to the input end of the strip-shaped ventilation shell, and the surface of the strip-shaped ventilation shell is provided with a plurality of ventilation holes.

[0017] In a preferred embodiment, the side shell is internally rotatably equipped with two guide rollers, which correspond to the positions of the double-sided offset printing machine body and the drying chamber, respectively.

[0018] As can be seen from the above, the double-sided, two-color offset printing machine provided by this utility model has the following technical effects.

[0019] Firstly, by setting up a drying mechanism and cooling components at the bottom of the double-sided, two-color offset printing press, the paper printed by the offset printing press can be pre-cooled using the cooling components. The ventilation holes on the surface of the strip-shaped ventilation shell are used to ventilate and cool the paper surface, allowing the pigments on the paper surface to dry and solidify step by step. This avoids the problem of pigment cracking that can easily occur with direct drying. Then, several heating holes on the surface of the heating cover are used to heat and dry the paper over a large area, improving the drying effect of the printing paper.

[0020] Secondly, by installing a cutting mechanism inside the drying chamber, the paper can be cut after drying. The limiting movable plate and pressing block are used to position the paper, preventing it from shifting during the cutting process and improving the cutting quality. In addition, with the feeding roller and the discharge roller, the paper can be automatically fed, cut and discharged, which helps to improve processing efficiency. Attached Figure Description

[0021] Figure 1 This is a front view structural diagram of a double-sided, two-color offset printing machine proposed in this utility model.

[0022] Figure 2 This is a side view of the structure of a double-sided, two-color offset printing machine proposed in this utility model.

[0023] Figure 3 This is a first-view structural diagram of the drying oven of a double-sided, two-color offset printing machine proposed in this utility model.

[0024] Figure 4 This is a second-view structural diagram of the drying oven of a double-sided, two-color offset printing machine proposed in this utility model.

[0025] Figure 5 for Figure 3 Enlarged structural diagram at point A

[0026] Figure 6 This is a schematic diagram of the transmission box structure of a double-sided, two-color offset printing machine proposed in this utility model.

[0027] In the attached diagram: 1. Double-sided offset printing machine body; 2. Drying mechanism; 3. Cooling assembly; 4. Cutting mechanism; 5. Feeding roller; 6. Discharge roller; 7. Transmission box; 8. Drive motor; 9. Drive gear; 10. Driven gear; 11. Limiting support roller;

[0028] Drying oven; 202, heating cover; 203, electric heating element; 204, heating hole;

[0029] Side shell; 302, strip-shaped ventilation shell; 303, air pump; 304, diverter pipe; 305, ventilation hole; 306, guide roller;

[0030] 401. Limiting and fixing seat; 402. Cutting hole; 403. Mounting groove; 404. Electric telescopic rod; 405. Movable block; 406. Cutting blade; 407. Strip-shaped limiting groove; 408. Limiting movable plate; 409. Pressing block; 410. Support spring. Detailed Implementation

[0031] 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.

[0032] Reference Figure 1 A double-sided, two-color offset printing machine includes a double-sided offset printing machine body 1, and a drying mechanism 2 is fixedly installed at the bottom of the double-sided offset printing machine body 1. The drying mechanism 2 is used to dry the printed paper.

[0033] Reference Figure 3 and Figure 4 In a preferred embodiment, the drying mechanism 2 includes a drying chamber 201. The drying chamber 201 is provided with two heating covers 202. The two heating covers 202 are symmetrically distributed on the inner bottom wall and the inner top wall of the drying chamber 201. A plurality of electric heating tubes 203 are fixedly installed on the inner wall of the heating cover 202. A plurality of heating holes 204 are opened on the surfaces of the two heating covers 202 that are close to each other. The plurality of heating holes 204 are evenly distributed on the surface of the heating cover 202.

[0034] It should be noted that the inner wall of the heating hole 204 is equipped with a dustproof mesh, which can prevent dust from entering the heating cover 202. The electric heating tube 203 can heat the air inside the heating cover 202, thereby generating heat through the upper and lower rows of heating holes 204, which can simultaneously dry both sides of the paper.

[0035] It should be noted that a number of limiting support rollers 11 are rotatably connected between the front and rear inner walls of the drying oven 201, and the number of limiting support rollers 11 are evenly distributed in groups of two between the two heating covers 202.

[0036] Reference Figure 2In a preferred embodiment, a cooling assembly 3 is provided on the left side of the drying chamber 201 and the double-sided offset printing machine body 1. The cooling assembly 3 includes a side shell 301, and two guide rollers 306 are rotatably arranged inside the side shell 301. The two guide rollers 306 correspond to the positions of the double-sided offset printing machine body 1 and the drying chamber 201, respectively.

[0037] It should be noted that strip-shaped ventilation shells 302 are fixedly installed on the front and rear inner walls of the side shell 301. An air pump 303 is installed on the top of the side shell 301. A diversion pipe 304 is fixedly installed at the output end of the air pump 303. The end of the diversion pipe 304 away from the air pump 303 extends into the interior of the side shell 301 and is fixedly connected to the input end of the strip-shaped ventilation shell 302. Several ventilation holes 305 are opened on the surface of the strip-shaped ventilation shell 302.

[0038] It is worth noting that by setting a drying mechanism 2 and a cooling component 3 at the bottom of the double-sided two-color offset printing machine, the paper printed by the offset printing machine can be pre-cooled by the cooling component 3 first, and the paper surface can be ventilated and cooled by the ventilation holes 305 on the surface of the strip ventilation shell 302, so that the pigment on the paper surface dries and solidifies in stages, thereby avoiding the situation that the pigment is prone to cracking when dried directly. Then, the paper is heated and dried over a large area by several heating holes 204 on the surface of the heating cover 202, which improves the drying effect of the printing paper.

[0039] Reference Figure 5 In a preferred embodiment, a cutting mechanism 4 is provided inside the drying oven 201. The cutting mechanism 4 includes a limiting fixing seat 401 fixedly connected to the inner wall of the drying oven 201. A cutting hole 402 is opened on the surface of the limiting fixing seat 401. An installation groove 403 is opened on the inner top wall of the cutting hole 402. Two electric telescopic rods 404 are fixedly installed inside the installation groove 403. A movable block 405 is fixedly connected to the telescopic end of the two electric telescopic rods 404. A cutting blade 406 is fixedly installed on the lower surface of the movable block 405.

[0040] It should be noted that there are two feeding rollers 5 and two discharging rollers 6 rotatably connected between the front and rear inner walls of the drying oven 201. The two feeding rollers 5 and the discharging rollers 6 are symmetrically distributed vertically, and the feeding rollers 5 and the discharging rollers 6 are symmetrically distributed on the left and right sides of the cutting mechanism 4.

[0041] Reference Figure 6It should be noted that two transmission boxes 7 are fixedly installed on the front of the drying oven 201. A drive motor 8 is fixedly installed on the surface of the transmission box 7. The output shaft of the drive motor 8 extends into the interior of the transmission box 7 and is fixedly connected to a drive gear 9. A driven gear 10 is rotatably installed inside the transmission box 7. The drive gear 9 meshes with the driven gear 10. One end of the feeding roller 5 and the discharging roller 6 both extend into the interior of the transmission box 7, and the ends of the two feeding rollers 5 and the discharging roller 6 mesh with the drive gear 9 and the driven gear 10, respectively.

[0042] It is worth noting that by setting a cutting mechanism 4 inside the drying chamber 201, the paper can be cut after drying. The limiting movable plate 408 and pressing block 409 are used to position the paper, which prevents the paper from shifting position during the cutting process and improves the cutting quality. In addition, with the feeding roller 5 and the discharge roller 6, the paper can be automatically fed, cut and discharged, which helps to improve processing efficiency.

[0043] It should be noted that a strip-shaped limiting groove 407 is provided on the lower surface of the movable block 405, and a limiting movable plate 408 is slidably provided on the inner wall of the strip-shaped limiting groove 407. A pressing block 409 is fixedly connected to the bottom of the limiting movable plate 408, and the pressing block 409 is used to position the paper during cutting.

[0044] It should be further explained that the inner wall of the strip-shaped limiting groove 407 is provided with several support springs 410. The bottom end of the support spring 410 is fixedly connected to the top of the limiting movable plate 408, and the top end of the support spring 410 is fixedly connected to the inner top wall of the strip-shaped limiting groove 407.

[0045] By setting a support spring 410, during the downward movement of the movable block 405, the movable block 405 can drive the limiting movable plate 408 to move downward, and the pressing block 409 at the bottom of the limiting movable plate 408 can press and limit the paper. At the same time, the support spring 410 can support the limiting movable plate 408, without affecting the downward movement of the cutting blade 406, thus improving the stability of the paper during cutting.

[0046] Working principle: During operation, the paper output from the double-sided offset printing machine is fed into the side shell 301 using the guide roller 306. Then, cold air is introduced into the strip-shaped ventilation shell 302 using the air pump 303 and the diverter pipe 304. Cold air is then sprayed out through the ventilation holes 305 on the surface of the strip-shaped ventilation shell 302, cooling and drying the ink on the paper surface, achieving a pre-drying effect. Next, the paper is fed into the drying chamber 201 using the guide roller 306, and heat is emitted through the heating holes 204 on the surface of the heating cover 202, thereby drying the paper. The paper is then fed into the cutting hole 402 of the limiting fixing seat 401 using the feeding roller 5. Then, the electric telescopic rod 404 drives the movable block 405 to move downward, thereby driving the cutting blade 406 to cut the paper. At the same time, the pressing block 409 positions the paper to improve its stability during cutting. After cutting, the cut paper is output to the outside of the drying box 201 using two discharge rollers 6. The subsequent paper is then fed into the cutting hole 402 using two feeding rollers 5 to achieve continuous paper cutting.

[0047] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the protection scope of this utility model.

Claims

1. A double-sided, two-color offset printing press, comprising a double-sided offset printing press body (1), characterized in that, A drying mechanism (2) is fixedly installed at the bottom of the double-sided offset printing machine body (1), and the drying mechanism (2) is used to dry the printed paper; The drying mechanism (2) includes a drying chamber (201). The drying chamber (201) is equipped with two heating covers (202). The two heating covers (202) are symmetrically distributed on the inner bottom wall and inner top wall of the drying chamber (201). Several electric heating tubes (203) are fixedly installed on the inner wall of the heating cover (202), and several heating holes (204) are opened on the surfaces of the two heating covers (202) that are close to each other. A cooling assembly (3) is provided on the left side of the drying oven (201) and the double-sided offset printing machine body (1). The cooling assembly (3) includes a side shell (301). A strip-shaped ventilation shell (302) is fixedly provided on the front and rear inner walls of the side shell (301). An air pump (303) is provided on the top of the side shell (301). The drying oven (201) is equipped with a cutting mechanism (4). The cutting mechanism (4) includes a limiting fixing seat (401) fixedly connected to the inner wall of the drying oven (201). The surface of the limiting fixing seat (401) is provided with a cutting hole (402). The inner top wall of the cutting hole (402) is provided with an installation groove (403). Two electric telescopic rods (404) are fixedly installed inside the installation groove (403). The telescopic ends of the two electric telescopic rods (404) are fixedly connected to a movable block (405). A cutting blade (406) is fixedly installed on the lower surface of the movable block (405).

2. The double-sided, two-color offset printing machine according to claim 1, characterized in that, The lower surface of the movable block (405) is provided with a strip-shaped limiting groove (407), and a limiting movable plate (408) is slidably provided on the inner wall of the strip-shaped limiting groove (407). A pressing block (409) is fixedly connected to the bottom of the limiting movable plate (408), and the pressing block (409) is used to position the paper during cutting.

3. A double-sided, two-color offset printing machine according to claim 2, characterized in that, The inner wall of the strip-shaped limiting groove (407) is provided with a plurality of support springs (410). The bottom end of the support spring (410) is fixedly connected to the top of the limiting movable plate (408), and the top end of the support spring (410) is fixedly connected to the inner top wall of the strip-shaped limiting groove (407).

4. A double-sided, two-color offset printing machine according to claim 1, characterized in that, The drying chamber (201) has two feeding rollers (5) and two discharging rollers (6) rotatably connected between its front and rear inner walls. The two feeding rollers (5) and the discharging rollers (6) are symmetrically distributed vertically. The feeding rollers (5) and the discharging rollers (6) are symmetrically distributed on the left and right sides of the cutting mechanism (4).

5. A double-sided, two-color offset printing machine according to claim 4, characterized in that, Two transmission boxes (7) are fixedly installed on the front of the drying oven (201). A drive motor (8) is fixedly installed on the surface of the transmission box (7). The output shaft of the drive motor (8) extends into the interior of the transmission box (7) and is fixedly connected to a drive gear (9). A driven gear (10) is rotatably installed inside the transmission box (7). The drive gear (9) meshes with the driven gear (10).

6. A double-sided, two-color offset printing machine according to claim 5, characterized in that, One end of each of the feeding roller (5) and the discharging roller (6) extends into the interior of the transmission box (7), and the ends of the two feeding rollers (5) and the discharging roller (6) mesh with the drive gear (9) and the driven gear (10), respectively.

7. A double-sided, two-color offset printing machine according to claim 1, characterized in that, A number of limiting support rollers (11) are rotatably connected between the front and rear inner walls of the drying oven (201), and the limiting support rollers (11) are evenly distributed in groups of two between the two heating covers (202).

8. A double-sided, two-color offset printing machine according to claim 1, characterized in that, The output end of the air pump (303) is fixedly provided with a diverter pipe (304). The end of the diverter pipe (304) away from the air pump (303) extends into the interior of the side shell (301) and is fixedly connected to the input end of the strip ventilation shell (302). The surface of the strip ventilation shell (302) is provided with a plurality of ventilation holes (305).

9. A double-sided, two-color offset printing machine according to claim 1, characterized in that, The side shell (301) is internally equipped with two guide rollers (306), which are respectively positioned opposite to the double-sided offset printing machine body (1) and the drying oven (201).

Images