Double-sided printing equipment

Abstract

The present invention relates to the field of printing technology, specifically to a double-sided printing device, including a support, an upper printing plate and a lower printing plate are installed on the support, a printed product placement position is set between the upper printing plate and the lower printing plate, the support is slidably connected to a bracket on both sides of the printed product placement position, a first adsorption unit and a second adsorption unit for fixing and moving the printed product are installed on each of the brackets, a first air outlet unit for blowing air to the lower side of the printed product is installed at the second adsorption unit of the bracket, and a second air outlet unit for blowing air directly below the second adsorption unit is installed at the second adsorption unit. The present invention prevents the printed product from being contaminated after double-sided printing, and facilitates the stable placement of the printed product at the printed product placement position.

Description

Technical Field

[0001] The invention relates to the technical field of printing, in particular to double-sided printing equipment. Background Art

[0002] In the production process of printed products, printing machines are often needed. When double-sided printing is performed on an object, since ink is printed on both sides of the object, the printed object is easy to contaminate contacting parts such as mobile devices, thereby causing the contacting parts to contaminate the next printed product, affecting the quality of the printed product. Summary of the invention

[0003] In view of the shortcomings of the prior art and to overcome the defects of the prior art, the present invention aims to provide a double-sided printing device to solve the problem that double-sided printed products are easily contaminated after printing.

[0004] The technical solution is that the double-sided printing equipment includes a support, an upper printing plate and a lower printing plate are installed on the support, a printed product placement position is set between the upper printing plate and the lower printing plate, the support is slidably connected to a bracket on both sides of the printed product placement position, each of the brackets is installed with a first adsorption unit and a second adsorption unit for fixing and moving the printed product, the bracket is installed with a first air outlet unit for blowing air to the lower side of the printed product at the second adsorption unit, and the second air outlet unit for blowing air directly below the second adsorption unit is installed at the second adsorption unit.

[0005] Preferably, each of the second adsorption units includes a straw, a suction cup is installed at one end of the straw, the other end of the straw is slidably connected to the connecting tube, a first elastic member made of elastic material is installed between the connecting tube and the straw, a first valve is installed on the straw, and the sliding direction of the straw relative to the connecting tube is inclined or perpendicular to the horizontal plane.

[0006] Preferably, when the first suction unit moves the printed product to the printed product placement position, the first suction unit is suctioned and fixed to the printed product.

[0007] Preferably, each of the first air outlet units comprises a pipeline, the pipeline is slidably connected to the bracket, a locking piece for fixing the pipeline and the bracket is installed at the connection between the pipeline and the bracket, and a blowpipe is installed on the pipeline.

[0008] Preferably, the support is fixedly connected to the guide rail, the support is slidably connected to the bracket through the guide rail, a rack is installed on the guide rail, a motor is installed on the bracket, a gear is installed on the motor output shaft, and the gear is meshed with the rack.

[0009] Preferably, the support is fixedly connected to the lower printing plate, the support is fixedly connected to the top frame through a pillar, the top frame is fixedly connected to the fixed end of the telescopic member, the movable end of each telescopic member is fixedly connected to the upper printing plate, and each bracket is located between each pillar and the upper printing plate.

[0010] Preferably, it also includes a branch pipe, in which a partition plate is arranged to divide the branch pipe into area A and area B, the connecting pipe is fixedly connected to a baffle in area A, the baffle is slidably connected to the branch pipe, one end of the connecting pipe is slidably connected to the partition plate, one end of the connecting pipe is located in area B, the sliding direction of the connecting pipe relative to the partition plate is inclined or perpendicular to the sliding direction of the straw relative to the connecting pipe, a second elastic member made of elastic material is installed between the baffle and the partition plate, a second valve is installed on the partition plate, and a flow port is arranged at one end of the branch pipe located in area B.

[0011] Preferably, each of the brackets is slidably connected to the branch pipe, and a limiting member for fixing the bracket and the branch pipe is installed at the connection between each of the brackets and the branch pipe, and each of the first adsorption units has the same structure as the second adsorption unit.

[0012] Preferably, each of the second air outlet units comprises an air pipe, each of the air pipes is made of a heat-resistant deformable material, and each of the air pipes is connected to a suction cup.

[0013] Preferably, each of the first adsorption units is connected to the negative pressure device through a circulation pipe, a third valve is installed on the circulation pipe, the circulation pipe is connected to the control pipe between the third valve and the circulation port, a fourth valve and a pressure check valve are installed on the control pipe, when the printed product adsorbed and fixed to the first adsorption unit is located above the printed product placement position, and after the third valve is closed and the fourth valve is opened, the printed product moves to the printed product placement position, the first adsorption unit is adsorbed and fixed to the printed product and the pressure check valve is in an open state.

[0014] The present invention provides a double-sided printing device, which has the following beneficial effects compared with the prior art:

[0015] 1. The part of the printed product in contact with the second adsorption unit is blown dry through the second air outlet unit to prevent the ink on the printed product from contaminating the second adsorption unit. The lower side of the printed product is blown dry through the first air outlet unit to prevent the ink on the printed product from contaminating subsequent contact parts such as conveying equipment, thereby preventing the subsequent contact parts from contaminating the printed product in turn, thereby preventing the printed product from being contaminated after double-sided printing.

[0016] 2. Through the cooperation of the third valve, the fourth valve and the pressure check valve, the printed product can be stably placed in the printed product placement position. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view schematic diagram of the present invention.

[0018] Figure 2 It is an enlarged schematic top view of the first adsorption unit of the present invention.

[0019] Figure 3 It is an enlarged schematic top view of the second adsorption unit of the present invention.

[0020] Figure 4 For the present invention Figure 2 Enlarged schematic diagram of the AA direction.

[0021] Figure 5 For the present invention Figure 3 Enlarged schematic diagram of the middle BB direction.

[0022] In the figure: 1 support, 2 upper printing plate, 3 lower printing plate, 4 printed product placement position, 5 bracket, 6 first adsorption unit, 7 second adsorption unit, 7.1 suction pipe, 7.2 suction cup, 7.3 connecting pipe, 7.4 first elastic member, 7.5 first valve, 7.6 branch pipe, 7.7 partition plate, 7.8 baffle, 7.9 second elastic member, 7.10 second valve, 7.11 flow port, 8 first air outlet unit, 8.1 pipeline, 8.2 blow pipe, 9 air pipe, 10 limit member, 11 locking member, 12 flow pipe, 13 negative pressure device, 14 third valve, 15 control pipe, 16 fourth valve, 17 pressure check valve, 18 outlet, 19 fifth valve, 20 guide rail, 21 rack, 22 gear, 23 motor, 24 support, 25 top frame, 26 telescopic member. DETAILED DESCRIPTION

[0023] The technical solutions of various embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention. In the description of the present invention, it should be noted that the orientation or position relationship indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0024] In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] The present invention is further described in detail below through specific implementation examples in conjunction with the accompanying drawings.

[0026] See also Figure 1-5 The present invention provides a technical solution: a double-sided printing device, comprising a support 1, an upper printing plate 2 and a lower printing plate 3 are installed on the support 1, a printed product placement position 4 is set between the upper printing plate 2 and the lower printing plate 3, the support 1 is slidably connected to a bracket 5 on both sides of the printed product placement position 4, each bracket 5 is installed with a first adsorption unit 6 and a second adsorption unit 7 for fixing and moving the printed product, the bracket 5 is installed with a first air outlet unit 8 for blowing air to the lower side of the printed product at the second adsorption unit 7, and the second air outlet unit for blowing air directly below the second adsorption unit 7 is installed at the second adsorption unit 7, the printed product placed on the conveying device is first adsorbed and raised by the first adsorption unit 6, and then the printed product is moved to the printed product placement position 4 by the movement of the bracket 5, and the printed product is double-sided printed by the upper printing plate 2 and the lower printing plate 3, and when the second adsorption unit 7 is When the attachment unit 7 moves to above the printed product placement position 4, a suitable gas such as heating air is blown into the lower part of the second adsorption unit 7 through the second air outlet unit, that is, the part of the printed product that contacts the second adsorption unit 7 is blown, and the part of the printed product that contacts the second adsorption unit 7 is dried to prevent the ink on the printed product from contaminating the second adsorption unit 7. After the second adsorption unit 7 fixes the printed product, the bracket 5 is moved to move the printed product to the next conveying device. During the movement, a suitable gas such as heating air is blown into the lower side of the printed product through the first air outlet unit 8 to dry the lower side of the printed product to prevent the ink on the printed product from contaminating subsequent contact parts such as conveying equipment, thereby preventing the subsequent contact parts from contaminating the printed product in turn, thereby preventing the printed product from being contaminated after double-sided printing.

[0027] In one embodiment, each second adsorption unit 7 comprises a suction tube 7.1, a suction cup 7.2 is installed at one end of the suction tube 7.1, the suction cup 7.2 and the suction tube 7.1 are an integral structure, and can also be fixed by bonding, the other end of the suction tube 7.1 is slidably connected to the connecting tube 7.3, a sealing ring is installed between the connecting tube 7.3 and the suction tube 7.1, a first elastic member 7.4 made of elastic material such as a spring is installed between the connecting tube 7.3 and the suction tube 7.1, a first valve 7.5 is installed on the suction tube 7.1, the sliding direction of the suction tube 7.1 relative to the connecting tube 7.3 is perpendicular to the horizontal plane, when the suction cup 7.2 contacts the printed product, the negative pressure causes the printed product to move upward, and the suction cup 7.2 is reset through the first elastic member 7.4.

[0028] In one embodiment, the branch pipe 7.6 is further provided. A partition plate 7.7 is bonded and fixed inside the branch pipe 7.6 to separate the branch pipe 7.6 into area A and area B. The connecting pipe 7.3 is provided in area A. A baffle 7.8 is fixedly connected inside, the baffle 7.8 and the connecting pipe 7.3 are an integrated structure, and can also be fixed by bonding. The baffle 7.8 is slidably connected to the branch pipe 7.6, one end of the connecting pipe 7.3 is slidably connected to the partition plate 7.7, a sealing ring is installed between the baffle 7.8 and the branch pipe 7.6, and between the connecting pipe 7.3 and the partition plate 7.7, one end of the connecting pipe 7.3 is located in the area B, the sliding direction of the connecting pipe 7.3 relative to the partition plate 7.7 is perpendicular to the sliding direction of the suction pipe 7.1 relative to the connecting pipe 7.3, a second elastic member 7.9 made of elastic material such as a spring is installed between the baffle 7.8 and the partition plate, a second valve 7.10 is installed on the partition plate 7.7, and a flow port 7.11 is arranged at one end of the branch pipe 7.6 located in the area B, by closing the first valve 7.5, the suction cup 7.2 moves upward, and then closing the second valve 7.10, the suction cup 7.2 moves to both sides of the printed product placement position 4, so that the suction cup 7.2 does not affect the printing of the printed product.

[0029] In one embodiment, each bracket 5 is slidably connected to the branch pipe 7.6, and a limiting member 10 for fixing the bracket 5 and the branch pipe 7.6 is installed at the connection between each bracket 5 and the branch pipe 7.6, wherein a strip hole is opened on the bracket 5, and the bracket 5 is slidably connected to the branch pipe 7.6 through the strip hole. The limiting member 10 is a bolt, which is convenient for adjusting the relative position of the branch pipe 7.6 and the bracket 5, and the structure of each first adsorption unit 6 is the same as that of the second adsorption unit 7.

[0030] In one embodiment, when the first adsorption unit 6 moves the printed product to the printed product placement position 4, the first adsorption unit 6 is adsorbed and fixed to the printed product, and the printed product is stably placed on the printed product placement position 4 through the first adsorption unit 6. If the printed product is positioned on the conveying device before printing, when the first adsorption unit 6 moves the printed product from the conveying device to the printed product placement position 4, the positioning of the printed product during printing has been completed.

[0031] In one embodiment, the flow port 7.11 in each first adsorption unit 6 is connected to the negative pressure device 13 through the flow pipe 12, and the third valve 14 is installed on the flow pipe 12. The flow pipe 12 is connected to the control pipe 15 between the third valve 14 and the flow port 7.11. The fourth valve 16 and the pressure check valve 17 are installed on the control pipe 15. When the printed product adsorbed and fixed by the first adsorption unit 6 is located above the printed product placement position 4, and after the third valve 14 is closed and the fourth valve 16 is opened, the printed product moves to the printed product placement position 4, the first adsorption unit 6 and the printed product are connected. The printed product is adsorbed and fixed and the pressure one-way valve 17 is in an open state, wherein the negative pressure device 13 is a suitable device such as a negative pressure pump. When the printed product adsorbed and fixed with the first adsorption unit 6 is located directly above the printed product placement position 4, the third valve 14 is closed and the fourth valve 16 is opened, and air is introduced into the circulation pipe 12 through the pressure one-way valve 17, so that the printed product moves downward. When the printed product moves to the printed product placement position 4, the first adsorption unit 6 is adsorbed and fixed with the printed product and the pressure one-way valve 17 is in an open state, so that the printed product is stably placed at the printed product placement position 4.

[0032] In one embodiment, the flow port 7.11 in each second adsorption unit 7 is connected to a suitable device such as a negative pressure pump through a mounting pipe, and each first valve 7.5, first valve 7.5, fourth valve 16, fourth valve 16 is a suitable component such as a solenoid valve, and the first adsorption unit 6 and the second adsorption unit 7 are a suitable number such as four.

[0033] In one embodiment, the flow pipe 12 opens an outlet 18 between the control pipe 15 and the flow port 7 . 11 , and a fifth valve 19 is installed on the outlet 18 . The fifth valve 19 is a suitable component such as a solenoid valve.

[0034] In one embodiment, each second air outlet unit includes an air pipe 9, and each air pipe 9 is made of a heat-resistant and deformable material such as a silicone tube. One end of each air pipe 9 is connected to the suction cup 7.2, and the other end of the air pipe 9 is connected to an air pump and an air heater. Air is blown into the suction cup 7.2 through the air pump. When blowing, the first valve 7.5 is closed, thereby blowing air directly below the second adsorption unit 7.

[0035] In one embodiment, each first air outlet unit 8 includes a pipe 8.1, which is slidably connected to the bracket 5. A locking member 11 for fixing the pipe 8.1 and the bracket 5 is installed at the connection between the pipe 8.1 and the bracket 5. A blow pipe 8.2 is installed on the pipe 8.1, wherein a fixing plate is bonded to the pipe 8.1, and the bracket 5 is slidably connected to the fixing plate through a long hole. The locking member 11 is a bolt. The pipe 8.1 is connected to the air pump and the air heater. When the second adsorption unit 7 drives the printed product away from the printed product placement position 4, air is blown toward the lower side of the printed product through the blow pipe 8.2.

[0036] In one embodiment, the support 1 is fixedly connected to the guide rail 20 by a suitable fixing method such as bolt fixing, welding, etc. The support 1 is slidably connected to the bracket 5 through the guide rail 20. There are two suitable brackets 5. A fixed cross bar is welded between each bracket 5. A fixed slider is welded on the cross bar. The bracket 5 is slidably connected to the slide rail through the slider. The rack 21 is fixed by screws on the guide rail 20. The motor 23 is bolted on the bracket 5. The output shaft of the motor 23 is keyed to a fixed gear 22. The gear 22 is meshed with the rack 21. The operation of the motor 23 drives the bracket 5 to move relative to the guide rail 20.

[0037] In one embodiment, the lower printing plate 3 is fixed by bolts on the support 1, and the support 1 is fixed to the top frame 25 by bolts through the pillars 24, there are four pillars 24, the top frame 25 is fixed to the fixed end of the telescopic member 26 by bolts, and the movable end of each telescopic member 26 is fixed to the upper printing plate 2 by bolts, there are two telescopic members 26, which are suitable devices such as electric telescopic rods, and each bracket 5 is located between each pillar 24 and the upper printing plate 2.

[0038] When in use, before the first adsorption unit 6 contacts the printed product, the printed product is placed on a conveying device such as a conveyor. In the first adsorption unit 6, the first valve 7.5 is closed and the second valve 7.10 is opened. When the suction cup 7.2 is located directly above the printed product, the first valve 7.5 is opened, so that the suction cup 7.2 moves down and contacts the printed product, so that the first adsorption unit 6 adsorbs and fixes the printed product, and the printed product moves upward. Through the movement of the bracket 5, the printed product moves to directly above the printed product placement position 4. The third valve 14 is closed and the fourth valve 16 is opened. Air is introduced into the circulation pipe 12 through the pressure check valve 17, so that the printed product moves downward. When the printed product moves to the printed product placement position 4, the fifth valve 19 is opened, so that the first adsorption unit 6 is released from the printed product. The first valve 7.5, the second valve 7.10, the fourth valve 16, and the fifth valve 19 are closed, and the third valve 14 is opened, so that the suction cup 7.2 is away from the printed product placement position 4 to prevent the suction cup 7.2 from affecting the printing of the printed product. After printing is completed, in the second adsorption unit 7, The first valve 7.5 and the second valve 7.10 are closed, and the negative pressure pump connected to the second adsorption unit 7 is turned on. By moving the bracket 5, the second adsorption unit 7 is moved to above the printed product placement position 4. The second valve 7.10 is opened, and the second adsorption unit 7 is moved to directly above the printed product placement position 4. The air pump connected to the second air outlet unit is turned on, and air is blown directly below the second adsorption unit 7 through the second air outlet unit to dry the portion of the printed product that contacts the second adsorption unit 7. The air pump connected to the second air outlet unit is closed, and the first valve 7.5 is opened, so that the suction cup 7.2 moves down and contacts the printed product, so that the second adsorption unit 7 adsorbs and fixes the printed product, and the printed product moves upward. By moving the bracket 5, the printed product moves to the next conveying device. When the printed product is away from the printed product placement position 4, the air pump connected to the first air outlet unit 8 is turned on, and air is blown to the lower side of the printed product through the blow pipe 8.2 to dry it. The air pump connected to the first air outlet unit 8 and the negative pressure pump connected to the second adsorption unit 7 are turned off, so that the printed product is placed on the next conveying device.

[0039] The present invention has been described in detail above through specific implementation modes and embodiments, but these do not constitute limitations of the present invention. Without departing from the principles of the present invention, those skilled in the art may also make many variations and improvements, which should also be regarded as the protection scope of the present invention.

Claims

1. A double-sided printing device, comprising a support (1), an upper printing plate (2) and a lower printing plate (3) being mounted on the support (1), a printed product placement position (4) being arranged between the upper printing plate (2) and the lower printing plate (3), characterized in that: The support (1) is slidably connected to a bracket (5) on both sides of a printed product placement position (4); a first adsorption unit (6) and a second adsorption unit (7) for fixing and moving the printed product are installed on each of the brackets (5); a first air outlet unit (8) for blowing air to the lower side of the printed product is installed at the second adsorption unit (7); and a second air outlet unit for blowing air directly below the second adsorption unit (7) is installed at the second adsorption unit (7); Each of the second adsorption units (7) comprises a suction pipe (7.1), a suction cup (7.2) is installed at one end of the suction pipe (7.1), the other end of the suction pipe (7.1) is slidably connected to a connecting pipe (7.3), a first elastic member (7.4) made of elastic material is installed between the connecting pipe (7.3) and the suction pipe (7.1), a first valve (7.5) is installed on the suction pipe (7.1), and the sliding direction of the suction pipe (7.1) relative to the connecting pipe (7.3) is inclined or perpendicular to a horizontal plane; Each of the second adsorption units (7) further comprises a branch pipe (7.6), a partition plate (7.7) for partitioning the branch pipe (7.6) into area A and area B is arranged in the branch pipe (7.6), the connecting pipe (7.3) is fixedly connected to a baffle plate (7.8) in area A, the baffle plate (7.8) is slidably connected to the branch pipe (7.6), one end of the connecting pipe (7.3) is slidably connected to the partition plate (7.7), one end of the connecting pipe (7.3) is located in area B, the sliding direction of the connecting pipe (7.3) relative to the partition plate (7.7) is inclined or perpendicular to the sliding direction of the suction pipe (7.1) relative to the connecting pipe (7.3), a second elastic member (7.9) made of elastic material is installed between the baffle plate (7.8) and the partition plate, a second valve (7.10) is installed on the partition plate (7.7), and a flow port (7.11) is arranged at one end of the branch pipe (7.6) located in area B; Each of the second air outlet units comprises an air pipe (9), each of the air pipes (9) is made of a heat-resistant and deformable material, and each of the air pipes (9) is connected to a suction cup (7.2); Each of the first air outlet units (8) comprises a pipeline (8.1), the pipeline (8.1) is slidably connected to the bracket (5), a locking member (11) for fixing the pipeline (8.1) and the bracket (5) is installed at the connection between the pipeline (8.1) and the bracket (5), and a blowpipe (8.2) is installed on the pipeline (8.1); When the first adsorption unit (6) moves the printed product to the printed product placement position (4), the first adsorption unit (6) is adsorbed and fixed to the printed product; Each of the first adsorption units (6) is connected to a negative pressure device (13) via a circulation pipe (12); a third valve (14) is installed on the circulation pipe (12); the circulation pipe (12) is connected to a control pipe (15) between the third valve (14) and the circulation port (7.11); a fourth valve (16) and a pressure check valve (17) are installed on the control pipe (15); when the printed product adsorbed and fixed to the first adsorption unit (6) is located above the printed product placement position (4), and after the third valve (14) is closed and the fourth valve (16) is opened, when the printed product moves to the printed product placement position (4), the first adsorption unit (6) is adsorbed and fixed to the printed product and the pressure check valve (17) is in an open state.

2. The double-sided printing device according to claim 1, characterized in that: The support (1) is fixedly connected to a guide rail (20), the support (1) is slidably connected to a bracket (5) via the guide rail (20), a rack (21) is mounted on the guide rail (20), a motor (23) is mounted on the bracket (5), a gear (22) is mounted on the output shaft of the motor (23), and the gear (22) is meshed with the rack (21).

3. The double-sided printing device according to claim 1, characterized in that: The support (1) is fixedly connected to the lower printing plate (3), the support (1) is fixedly connected to the top frame (25) via a pillar (24), the top frame (25) is fixedly connected to the fixed end of the telescopic member (26), the movable end of each telescopic member (26) is fixedly connected to the upper printing plate (2), and each bracket (5) is located between each pillar (24) and the upper printing plate (2).

4. The double-sided printing device according to claim 1, characterized in that: Each of the brackets (5) is slidably connected to the branch pipe (7.6), and a stopper (10) for fixing the bracket (5) and the branch pipe (7.6) is installed at the connection between the bracket (5) and the branch pipe (7.6). The structure of each of the first adsorption units (6) and the second adsorption units (7) is the same.

Images