Screen printing machine for carton production

Abstract

The utility model discloses a screen printing machine for carton production. The screen printing machine comprises a machine base, a printing plate, a negative pressure positioning assembly and an auxiliary positioning assembly. The negative pressure positioning assembly comprises a supporting table base, the supporting table base is fixedly assembled above the machine base, an adsorption fixing table is fixedly assembled above the supporting table base, the adsorption fixing table is arranged under the printing plate, a negative pressure conduction cavity is formed in the adsorption fixing table, and a plurality of evenly-distributed adsorption fixing holes are formed in the upper portion of the adsorption fixing table. The auxiliary positioning assembly is assembled above the adsorption fixing table and comprises a pair of L-shaped positioning plates, and auxiliary limiting blocks are fixedly connected to the sides, close to each other, of the L-shaped positioning plates. According to the paper box production screen printing machine, the negative pressure positioning assembly is arranged, auxiliary fixing and limiting can be carried out on a paper box to be printed, the convenience of printing and positioning of the paper box to be printed is guaranteed, and the printing stability of the paper box production screen printing machine is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of paper box screen printing machines, and particularly relates to a paper box production screen printing machine. Background Art

[0002] A paper box production screen printing machine is a screen printing device used to print patterns, text or logos on cardboard. It usually uses screen printing technology to print ink onto the cardboard through the screen to form a set pattern or text. It is widely used in the production and processing of various packaging paper boxes.

[0003] Currently, the common paper box production screen printing machine is mainly composed of a transmission device, a printing plate mechanism, an embossing device, a control system, and ancillary accessories such as a workbench and a frame. In actual application, the cardboard to be printed is placed on the workbench. Then, the printing plate mechanism is placed on the cardboard to be printed through the operation of the transmission device. The ink is output on the printing plate by moving the embossing device, and the ink is printed on the cardboard along the hollow part of the printing plate, thereby forming a pattern, text or logo information.

[0004] The common paper box production screen printing machine in the prior art mainly uses manual positioning to place and position the paper boxes to be printed. The accuracy of placing and positioning the paper boxes mainly depends on the number of operators. This makes the accuracy of positioning and printing of the paper boxes by the paper box production screen printing machine during the actual printing process and the consistency of pattern information poor.

[0005] Therefore, in response to the above-mentioned technical problems, it is necessary to provide a carton production screen printing machine.

[0006] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. Utility Model Content

[0007] The purpose of the utility model is to provide a paper box production screen printing machine, which can improve the accuracy and stability of printing on paper boxes.

[0008] In order to achieve the above-mentioned purpose, a specific embodiment of the present invention provides a paper box production screen printing machine, including: a machine base, a printing plate, a negative pressure positioning component, and an auxiliary positioning component.

[0009] A printing plate is assembled on the machine base.

[0010] The negative pressure positioning assembly is assembled between the printing plate and the machine base. The negative pressure positioning assembly includes a support base, which is fixedly assembled above the machine base. An adsorption fixing platform is fixedly assembled above the support base. The adsorption fixing platform is arranged directly below the printing plate. A negative pressure conduction cavity is provided in the adsorption fixing platform. A plurality of evenly distributed adsorption fixing holes are provided above the adsorption fixing platform. The plurality of adsorption fixing holes are all connected to the exhaust cavity.

[0011] The auxiliary positioning assembly is assembled above the adsorption fixing platform, and the auxiliary positioning assembly includes a pair of L-shaped positioning plates, which are symmetrically assembled on both sides of the adsorption fixing platform, and the sides of the pair of L-shaped positioning plates that are close to each other are fixedly connected with auxiliary limit blocks.

[0012] In one or more embodiments of the present invention, a fixed frame is fixedly mounted above the machine base. This fixed frame provides assembly limits and lift control for the movable frame. A movable frame is slidably mounted on the side of the fixed frame proximal to the printing plate. This movable frame secures the printing plate holder. Furthermore, the movable frame provides assembly limits and horizontal sliding control for the inkjet brush head.

[0013] In one or more embodiments of the present invention, a pair of printing plate holders are fixedly mounted on the side of the movable elevating frame facing away from the fixed frame. The pair of printing plate holders are fixedly mounted on either side of the printing plate. The printing plate holders connect the movable elevating frame to the fixed frame, allowing the printing plate holders to rise and fall synchronously with the movable elevating frame. An inkjet brush head is slidably mounted between the pair of printing plate holders, and the inkjet brush head is configured to cooperate with the printing plate. The printing plate is inkjet treated by controlling the movement of the inkjet brush head.

[0014] In one or more embodiments of the present invention, a cylinder is fixedly mounted on one side of the support base proximate to the adsorption fixing platform, and a cylinder piston is slidably mounted within the cylinder. The volume of the air extraction chamber is adjusted by sliding the cylinder piston within the cylinder. The cylinder piston and the cylinder cooperate to form an air extraction chamber. By increasing the volume of the air extraction chamber, the cylinder piston can extract air from the cylinder as the piston rod moves, thereby achieving negative pressure adsorption and fixation of the cardboard placed on the adsorption fixing platform.

[0015] In one or more embodiments of the present invention, a connecting air nozzle is connected between the cylinder and the negative pressure conduction chamber, and the air extraction chamber and the negative pressure conduction chamber are connected via the connecting air nozzle. The connecting air nozzle serves to connect the air extraction chamber and the negative pressure conduction chamber, allowing air within the cylinder to be extracted by controlling the movement of the cylinder piston. A pair of piston rods are fixedly mounted on the side of the cylinder piston facing away from the air extraction chamber. By controlling the movement of the pair of piston rods, the cylinder piston is controlled to move in and out, thereby facilitating adjustment of the volume of the air extraction chamber.

[0016] In one or more embodiments of the present invention, a return spring is sleeved on the outer side of each of the pair of piston rods. Contraction and resetting of the return spring automatically resets the cylinder piston within the cylinder. A pulling handle is fixedly mounted on one end of the pair of piston rods located outside the cylinder. The piston rods are controlled by controlling the movement of the pulling handle.

[0017] In one or more embodiments of the present invention, a plurality of positioning posts are fixedly mounted below the adsorption fixture platform. These posts are staggered, and a plurality of positioning holes corresponding to the posts are defined above the support base. The staggered positioning posts and the positioning holes cooperate with each other to assist in the assembly and positioning of the adsorption fixture platform, ensuring the stability of the assembly and fixation of the adsorption fixture platform.

[0018] In one or more embodiments of the present invention, the support base is equipped with a plurality of symmetrically distributed air pore blocking blocks, each of which is arranged corresponding to the adsorption fixing holes. This facilitates the use of positioning columns to block and limit the adsorption fixing holes according to changes in the size of the cardboard, thereby reducing air leakage from the adsorption fixing holes due to insufficient cardboard size. The upper end surfaces of the plurality of air pore blocking blocks are on the same horizontal plane as the upper end surface of the adsorption fixing platform. This reduces the gap between the cardboard and the adsorption fixing platform caused by the protrusion of the air pore blocking blocks, thereby ensuring the stability of the negative pressure adsorption of the cardboard by the adsorption fixing platform.

[0019] In one or more embodiments of the present invention, a plurality of evenly distributed threaded mounting holes are formed on one side of the adsorption fixing platform. Side mounting bolts are fixedly mounted between the L-shaped positioning plate and the adsorption fixing platform. The side mounting bolts are threadedly mounted in the threaded mounting holes. The L-shaped positioning plate is assembled and fixed by the side mounting bolts and the threaded mounting holes.

[0020] In one or more embodiments of the present invention, an assembly avoidance groove is provided above the L-shaped positioning plate, and the auxiliary limit block is arranged in the assembly avoidance groove. The assembly avoidance groove provides assembly and operation space for the auxiliary limit block. An upper assembly bolt is fixedly assembled between the auxiliary limit block and the L-shaped positioning plate. The auxiliary limit block is assembled and fixed to the support base by the upper assembly bolt. The upper surface of the L-shaped positioning plate and the upper surface of the auxiliary limit block are on the same horizontal plane. The interference caused by the protrusion of the auxiliary limit block on the printing process of the printing plate is reduced.

[0021] Compared with the existing technology, the paper box production screen printing machine disclosed in the utility model can assist in fixing and limiting the paper box to be printed by setting a negative pressure positioning component, ensuring the convenience of printing positioning of the paper box to be printed and improving the printing stability of the paper box production screen printing machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are only some of the embodiments described in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive efforts.

[0023] Figure 1 This is a three-dimensional diagram of a paper box production screen printing machine in one embodiment of the present utility model;

[0024] Figure 2 This is a partial structural perspective view of a paper box production screen printing machine in one embodiment of the present utility model;

[0025] Figure 3 for Figure 2 Schematic diagram of the structure at A in the middle;

[0026] Figure 4 This is a partial structural perspective view from another angle of a paper box production screen printing machine in one embodiment of the present invention;

[0027] Figure 5 This is a side sectional view of a paper box production screen printing machine in one embodiment of the present utility model;

[0028] Figure 6 for Figure 5 Schematic diagram of the structure at point B in the middle.

[0029] Description of main reference numerals:

[0030] 1-machine base, 101-printing plate, 102-fixed frame, 103-lifting and moving frame, 104-printing plate fixing frame, 105-inkjet brush head, 2-negative pressure positioning assembly, 201-support base, 202-adsorption fixed platform, 203-negative pressure conduction chamber, 204-cylinder, 205-cylinder piston, 206-exhaust air chamber, 207-connecting air nozzle, 208-piston rod, 209-reset spring, 210-pull handle, 211-positioning column, 212-air pore blocking block, 3-auxiliary positioning assembly, 301-L-shaped positioning plate, 302-auxiliary limit block, 303-side assembly bolt, 304-upper assembly bolt. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only a portion of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work should fall within the scope of protection of the present invention.

[0032] like Figures 1 to 6 As shown, a paper box production screen printing machine in one embodiment of the present invention includes: a machine base 1, a printing plate 101, a negative pressure positioning component 2, and an auxiliary positioning component 3.

[0033] like Figure 1 As shown, a printing plate 101 is mounted on the machine base 1. The printing plate 101 cooperates with the inkjet brush head 105 to print patterns, texts and logo information on the cardboard to be printed.

[0034] like Figures 1 to 5 As shown, a fixed frame 102 is fixedly mounted on the top of the base 1. The fixed frame 102 plays the role of assembling limit and lifting control for the lifting movable frame 103.

[0035] like Figures 1 to 5 As shown, a lifting and moving frame 103 is slidably mounted on one side of the fixed frame 102 close to the printing plate 101. The lifting and moving frame 103 plays a role in assembling and fixing the printing plate fixing frame 104. At the same time, the lifting and moving frame 103 can also play a role in assembling and limiting the inkjet brush head 105 and horizontally sliding.

[0036] like Figures 1 to 5As shown, a pair of printing plate holders 104 are fixedly mounted on one side of the elevating movable frame 103 facing away from the fixed frame 102. The pair of printing plate holders 104 are fixedly mounted on both sides of the printing plate 101. The printing plate holders 104 connect the elevating movable frame 103 with the fixed frame 102, allowing the printing plate holders 104 to rise and fall synchronously with the elevating movable frame 103.

[0037] like Figures 1 to 5 As shown, an inkjet brush head 105 is slidably mounted between a pair of printing plate fixing frames 104, and the inkjet brush head 105 is matched with the printing plate 101. The movement of the inkjet brush head 105 is controlled to perform inkjet processing on the printing plate 101.

[0038] like Figures 1 to 4 As shown, the negative pressure positioning assembly 2 is assembled between the printing plate 101 and the machine base 1, and the negative pressure positioning assembly 2 includes a support base 201, which is fixedly assembled above the machine base 1. The support base 201 plays a role in assembling and fixing the adsorption fixing platform 202.

[0039] like Figures 2 to 6 As shown, a cylinder 204 is fixedly mounted on one side of the support base 201 close to the adsorption fixing platform 202, and a cylinder piston 205 is slidably mounted in the cylinder 204. The volume of the air extraction cavity 206 is adjusted by sliding the cylinder piston 205 in the cylinder 204.

[0040] like Figures 5 and 6 As shown, an air extraction cavity 206 is formed between the cylinder piston 205 and the cylinder 204. By increasing the volume of the air extraction cavity 206, the cylinder piston 205 can extract air from the cylinder 204 as the piston rod 208 moves, thereby achieving negative pressure adsorption and fixation of the cardboard placed on the adsorption fixing platform 202.

[0041] like Figures 2 to 6 As shown, an adsorption fixing platform 202 is fixedly assembled on the upper part of the support base 201, and the adsorption fixing platform 202 is arranged just below the printing plate 101. The cardboard to be printed is supported and limited by the adsorption fixing platform 202.

[0042] like Figures 5 and 6 As shown, a negative pressure conduction chamber 203 is defined within the adsorption and fixing platform 202. The negative pressure conduction chamber 203 connects to a plurality of adsorption and fixing holes. By extracting air from the negative pressure conduction chamber 203, the plurality of adsorption and fixing holes can negatively adsorb and fix the paper box to be printed on the adsorption and fixing platform 202.

[0043] Specifically, a plurality of evenly distributed adsorption and fixing holes are provided above the adsorption and fixing platform 202 , and the plurality of adsorption and fixing holes are all connected to the exhaust cavity.

[0044] like Figures 5 and 6 As shown, a connecting air nozzle 207 is connected between the air cylinder 204 and the negative pressure conduction chamber 203, and the air extraction chamber 206 and the negative pressure conduction chamber 203 are connected through the connecting air nozzle 207. The connecting air nozzle 207 serves to connect the air extraction chamber 206 and the negative pressure conduction chamber 203, so that the air in the air cylinder 204 can be extracted by controlling the movement of the cylinder piston 205.

[0045] like Figures 5 and 6 As shown, a pair of piston rods 208 are fixedly mounted on one side of the cylinder piston 205 away from the air pumping cavity 206. By controlling the movement of the pair of piston rods 208, the cylinder piston 205 is pulled and moved, thereby facilitating the adjustment of the volume of the air pumping cavity 206.

[0046] like Figures 2 to 6 As shown, the outsides of a pair of piston rods 208 are sleeved with return springs 209. The cylinder piston 205 can be automatically reset in the cylinder 204 by the contraction and reset of the return spring 209.

[0047] like Figures 2 to 6 As shown, a pair of piston rods 208 are fixedly equipped with a pulling handle 210 at one end outside the cylinder 204. The piston rods 208 are pulled and moved by controlling the movement of the pulling handle 210.

[0048] like Figures 2 to 4 As shown, a plurality of positioning posts 211 are fixedly mounted below the adsorption fixing platform 202. The positioning posts 211 are staggered, and a plurality of positioning holes corresponding to the positioning posts 211 are formed above the support base 201. The staggered positioning posts 211 cooperate with the positioning holes to assist in the assembly and positioning of the adsorption fixing platform 202, ensuring the stability of the assembly and fixation of the adsorption fixing platform 202.

[0049] like Figures 2 to 4 As shown, the support base 201 is equipped with multiple symmetrically distributed air vent blocks 212, each corresponding to the adsorption holes. This facilitates the use of positioning posts 211 to block and limit the adsorption holes according to changes in cardboard size, reducing air leakage from the adsorption holes due to insufficient cardboard size. The upper end surfaces of the multiple air vent blocks 212 are aligned with the upper end surface of the adsorption platform 202. This minimizes the possibility of gaps between the cardboard and the adsorption platform 202 caused by protrusion of the air vent blocks 212, ensuring the stability of the negative pressure adsorption performed by the adsorption platform 202.

[0050] like Figures 2 to 4As shown, the auxiliary positioning assembly 3 is assembled above the adsorption fixing platform 202. The auxiliary positioning assembly 3 includes a pair of L-shaped positioning plates 301, which are symmetrically assembled on both sides of the adsorption fixing platform 202. The two sides of the paper box to be printed are positioned by the pair of L-shaped positioning plates 301.

[0051] Specifically, the thickness of the L-shaped positioning plate 301 is the same as the thickness of the paper box to be printed. When the thickness of the paper box to be printed is too thin, the interference caused by the L-shaped positioning plate 301 on the printing of the printing plate 101 can be reduced by reducing the subsequent steps of the printing plate fixing frame 104.

[0052] like Figures 2 to 4 As shown, one side of a pair of L-shaped positioning plates 301 close to each other is fixedly connected with an auxiliary limiting block 302. The auxiliary limiting block 302 assists the L-shaped positioning plates 301 to perform auxiliary positioning on the paper box to be printed.

[0053] like Figures 2 to 4 As shown, a plurality of evenly distributed threaded mounting holes are provided on one side of the adsorption fixing platform 202. Side mounting bolts 303 are fixedly mounted between the L-shaped positioning plate 301 and the adsorption fixing platform 202. The side mounting bolts 303 are threadedly mounted in the threaded mounting holes. The L-shaped positioning plate 301 is assembled and fixed by the side mounting bolts 303 and the threaded mounting holes.

[0054] An assembly avoidance groove is provided above the L-shaped positioning plate 301, and the auxiliary limiting block 302 is arranged in the assembly avoidance groove. The assembly avoidance groove provides an assembly operation space for the auxiliary limiting block 302.

[0055] like Figures 2 to 4 As shown, upper mounting bolts 304 are fixedly mounted between the auxiliary stop block 302 and the L-shaped positioning plate 301. These bolts secure the auxiliary stop block 302 to the support base 201. The upper surface of the L-shaped positioning plate 301 and the upper surface of the auxiliary stop block 302 are coplanar. This minimizes interference caused by the protrusion of the auxiliary stop block 302 during the printing process of the printing plate 101.

[0056] During specific use, the positions of the L-shaped positioning plate 301 and the auxiliary limiting block 302 are adjusted according to the actual situation of the paper box to be printed, and the air hole blocking block 212 is inserted into the adsorption fixing hole that cannot contact the paper box to be printed.

[0057] Subsequently, the operator can place the paper box to be printed on the adsorption fixing table 202, and position the paper box to be printed by cooperating with the L-shaped positioning plate 301 and the auxiliary limit block 302. At the same time, the cylinder piston 205 can be pulled by pulling the pulling handle 210, thereby increasing the volume of the air extraction cavity 206. At this time, the air in the negative pressure conduction cavity 203 will flow back into the air extraction cavity 206 along the connecting air nozzle 207. By extracting the air in the negative pressure conduction cavity 203, the multiple adsorption fixing holes can be used to negatively adsorb and fix the paper box to be printed.

[0058] After being fixed, the paper box to be printed placed on the adsorption fixed platform 202 can be printed by controlling the coordination of the fixed frame 102, the lifting movable frame 103, the inkjet brush head 105 and the printing plate 101.

[0059] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0060] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method 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 can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A paper box production screen printing machine, characterized in that, include: A machine base, on which a printing plate is mounted; A negative pressure positioning assembly is assembled between the printing plate and the machine base, and the negative pressure positioning assembly includes a support base, the support base is fixedly assembled above the machine base, an adsorption fixing platform is fixedly assembled above the support base, the adsorption fixing platform is arranged directly below the printing plate, a negative pressure conduction cavity is opened in the adsorption fixing platform, and a plurality of evenly distributed adsorption fixing holes are opened above the adsorption fixing platform, and the plurality of adsorption fixing holes are all connected to the exhaust cavity; An auxiliary positioning assembly is assembled above the adsorption fixing platform. The auxiliary positioning assembly includes a pair of L-shaped positioning plates. The pair of L-shaped positioning plates are symmetrically assembled on both sides of the adsorption fixing platform. Auxiliary limit blocks are fixedly connected to the sides of the pair of L-shaped positioning plates that are close to each other.

2. A paper box production screen printing machine according to claim 1, characterized in that: A fixed frame is fixedly assembled on the top of the machine base, and a lifting and moving frame is slidably assembled on a side of the fixed frame close to the printing plate.

3. A paper box production screen printing machine according to claim 2, characterized in that: A pair of printing plate fixing frames are fixedly mounted on one side of the lifting and moving frame away from the fixed frame. The pair of printing plate fixing frames are fixedly mounted on both sides of the printing plate. An inkjet brush head is slidably mounted between the pair of printing plate fixing frames. The inkjet brush head is matched with the printing plate.

4. A paper box production screen printing machine according to claim 1, characterized in that: A cylinder is fixedly mounted on one side of the support seat close to the adsorption fixing platform, a cylinder piston is slidably mounted in the cylinder, and an air pumping cavity is formed between the cylinder piston and the cylinder.

5. A paper box production screen printing machine according to claim 4, characterized in that: A connecting air nozzle is connected between the cylinder and the negative pressure conduction cavity, and the air extraction cavity and the negative pressure conduction cavity are connected through the connecting air nozzle. A pair of piston rods are fixedly assembled on the side of the cylinder piston away from the air extraction cavity.

6. A paper box production screen printing machine according to claim 5, characterized in that: The outer sides of the pair of piston rods are sleeved with return springs, and one end of the pair of piston rods located outside the cylinder is fixedly equipped with a pulling handle.

7. A paper box production screen printing machine according to claim 1, characterized in that: A plurality of positioning columns are fixedly mounted below the adsorption fixing platform, and the positioning columns are staggered and distributed. A plurality of positioning holes corresponding to the positioning columns are opened above the support seat.

8. A paper box production screen printing machine according to claim 1, characterized in that: The support base is equipped with a plurality of symmetrically distributed pore blocking blocks, which are arranged corresponding to the adsorption fixing holes, and the upper end surfaces of the plurality of pore blocking blocks are in the same horizontal plane as the upper end surface of the adsorption fixing base.

9. A paper box production screen printing machine according to claim 1, characterized in that: A plurality of evenly distributed assembly threaded holes are opened on one side of the adsorption fixing platform, and side assembly bolts are fixedly assembled between the L-shaped positioning plate and the adsorption fixing platform, and the side assembly bolts are threadedly assembled in the assembly threaded holes.

10. A paper box production screen printing machine according to claim 1, characterized in that: An assembly avoidance groove is provided above the L-shaped positioning plate, and the auxiliary limit block is arranged in the assembly avoidance groove. An upper assembly bolt is fixedly assembled between the auxiliary limit block and the L-shaped positioning plate, and the upper surface of the L-shaped positioning plate and the upper surface of the auxiliary limit block are in the same horizontal plane.

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