Positioning and pressing device for PVC (polyvinyl chloride) board printing

Abstract

The utility model relates to the technical field of PVC (polyvinyl chloride) board processing, in particular to a positioning and pressing device for PVC board printing, which comprises a positioning and pressing workbench for PVC board printing, clamping hydraulic cylinders are embedded at two ends of the positioning and pressing workbench, replaceable clamping seats are symmetrically arranged at two ends of the top surface of the positioning and pressing workbench, and the clamping hydraulic cylinders are arranged on the clamping seats. And a negative pressure fan is mounted on the outer wall of one side of the positioning and pressing workbench. The clamping hydraulic cylinders embedded in the two ends of the positioning and pressing workbench can drive the piston rods to drive the connecting frame with the cross section in a transverse L shape to move, and the connecting frame is matched with the connecting plug on the back of the replaceable clamping base in an inserted mode, so that a PVC board is firmly clamped; and a plurality of uniform and equidistant negative pressure holes communicating with the negative pressure hollow area are formed in the top surface of the positioning and pressing workbench and are matched with a negative pressure fan mounted on the outer wall of one side, so that the negative pressure fan can pump out air in the negative pressure hollow area through an exhaust pipe, the PVC plate is effectively adsorbed, and displacement of the PVC plate in the printing process is prevented.

Description

Technical Field

[0001] This utility model relates to the field of PVC board processing technology, specifically to a positioning and pressing device for PVC board printing. Background Technology

[0002] PVC sheets, as a widely used plastic material, are extensively used in the printing industry due to their excellent physical properties, chemical stability, and processing performance. In the PVC sheet printing process, the positioning and clamping device is one of the key pieces of equipment, responsible for ensuring the PVC sheet maintains its accurate position during printing, thereby guaranteeing print quality and production efficiency. Existing technologies often lack effective fixing methods, leading to easy displacement of the PVC sheet during printing. For example, some simple clamps may not be able to securely hold the PVC sheet, especially during high-speed printing, where even slight movement of the PVC sheet can affect printing accuracy. Utility Model Content

[0003] The purpose of this invention is to provide a positioning and pressing device for printing on PVC boards, so as to solve the problem of poor positioning effect of existing PVC boards during the printing process mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A positioning and clamping device for PVC board printing includes a positioning and clamping worktable for PVC board printing. Clamping hydraulic cylinders are embedded at both ends of the positioning and clamping worktable. Replaceable clamping seats are symmetrically arranged at both ends of the top surface of the positioning and clamping worktable. A negative pressure fan is installed on one outer wall of the positioning and clamping worktable.

[0006] The positioning and pressing workbench has a negative pressure hollow area inside, and the top surface of the positioning and pressing workbench has several uniformly spaced negative pressure holes that are connected to the negative pressure hollow area. The exhaust pipe of the negative pressure fan is connected to the inside of the negative pressure hollow area.

[0007] The piston rod end of the clamping hydraulic cylinder is connected to a connecting frame with a horizontal L-shaped cross-section, and the end of the connecting frame is connected to the back of the replaceable clamping seat.

[0008] The back of the replaceable clamp is equipped with a connector plug that engages with the connector bracket.

[0009] Preferably, a bracket for fixing a negative pressure fan is installed on one outer wall of the positioning and pressing workbench.

[0010] Preferably, the end of the connector has a plug slot that is adapted to the size of the connector plug and fits into place.

[0011] Preferably, the outer wall of the connecting frame is provided with a screw hole that communicates with the insertion slot.

[0012] Preferably, the connector is connected to the connector bracket by a fixing bolt passing through a screw hole.

[0013] Preferably, the replaceable clamping seat has several uniformly spaced anti-slip protrusions on the side surface that contacts the PVC board.

[0014] Preferably, the anti-slip protrusion is a rubber protrusion, and the height of the protrusion is 1-3mm.

[0015] Compared with existing technologies, the beneficial effects of this utility model are:

[0016] 1. In this PVC board printing positioning and clamping device, the positioning and clamping worktable has clamping hydraulic cylinders embedded at both ends that drive piston rods to move a connecting frame with a transverse L-shaped cross-section. The connecting frame then engages with the connecting plug on the back of the replaceable clamping seat to firmly clamp the PVC board. Simultaneously, several evenly spaced negative pressure holes on the top surface of the positioning and clamping worktable, connected to the negative pressure hollow area, work in conjunction with a negative pressure fan installed on one side of the outer wall. This allows the negative pressure fan to extract air from the negative pressure hollow area through an exhaust pipe, creating negative pressure at the negative pressure holes. This effectively adsorbs the PVC board, preventing displacement during printing. The replaceable clamping seat design allows the device to adapt to PVC boards of different sizes and shapes, improving its versatility and practicality.

[0017] 2. In this PVC board printing positioning and clamping device, the end of the connecting frame is provided with a plug-in groove that is compatible with the size of the connecting plug and fits in. The outer wall of the connecting frame is provided with a screw hole that communicates with the plug-in groove. The connecting plug is connected to the connecting frame by passing through the screw hole with a fixing bolt. This plug-in fit and bolt fixing method is not only easy to install, but also has a firm connection, which can effectively ensure the stability and reliability of the clamping seat.

[0018] 3. In this PVC board printing positioning and clamping device, the surface of the replaceable clamping seat in contact with the PVC board is provided with several evenly spaced anti-slip protrusions. These anti-slip protrusions are made of rubber and have a height of 1-3mm. This allows the clamping seat to provide greater friction and anti-slip effect when clamping the PVC board, effectively preventing the PVC board from sliding or shifting during the printing process, thereby improving printing accuracy and quality. At the same time, the rubber anti-slip protrusions also have a certain degree of elasticity and cushioning, protecting the PVC board surface from damage. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are explained in detail together with the embodiments of the present invention, but do not constitute a limitation thereof.

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the cross-sectional structure of the present invention;

[0022] Figure 3 This is a cross-sectional exploded view of the present invention;

[0023] 10. Positioning and clamping worktable; 11. Negative pressure hole; 12. Support; 13. Negative pressure hollow area;

[0024] 20. Clamping hydraulic cylinder; 21. Piston rod; 22. Connecting bracket; 23. Insertion groove; 24. Screw hole;

[0025] 30. Replaceable clamping seat; 31. Anti-slip protrusions; 32. Connecting plug; 33. Fixing bolts;

[0026] 40. Negative pressure fan. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments and accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] In the description of this utility model, it should be understood that the terms "center", "vertical", "horizontal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to facilitate the description of this utility model and to simplify the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] Positioning and clamping devices for PVC board printing, such as Figures 1-3As shown, the device includes a positioning and clamping worktable 10 for PVC board printing. Clamping hydraulic cylinders 20 are embedded at both ends of the positioning and clamping worktable 10. Replaceable clamping seats 30 are symmetrically arranged at both ends of the top surface of the positioning and clamping worktable 10. A negative pressure fan 40 is installed on one outer wall of the positioning and clamping worktable 10. A negative pressure hollow area 13 is formed inside the positioning and clamping worktable 10. Several evenly spaced negative pressure holes 11 connected to the negative pressure hollow area 13 are formed on the top surface of the positioning and clamping worktable 10. The exhaust pipe of the negative pressure fan 40 is connected to the interior of the negative pressure hollow area 13. A connecting frame 22 with a horizontal L-shaped cross-section is connected to the end of the piston rod 21 of the clamping hydraulic cylinder 20. The end of the connecting frame 22 is connected to the back of the replaceable clamping seat 30. A connecting plug 32 that plugs into the connecting frame 22 is installed on the back of the replaceable clamping seat 30. The positioning and clamping worktable 10 has clamping hydraulic cylinders 20 embedded at both ends, which can drive piston rods 21 to move connecting frame 22 with a transverse L-shaped cross-section. Then, the connecting frame 22 is connected to the connecting plug 32 on the back of the replaceable clamping seat 30 to achieve a firm clamping of the PVC board. At the same time, several evenly spaced negative pressure holes 11 on the top surface of the positioning and clamping worktable 10, which are connected to the negative pressure hollow area 13, work together with the negative pressure fan 40 installed on one side of the outer wall. The negative pressure fan 40 can draw out the air in the negative pressure hollow area 13 through the exhaust pipe, thereby forming a negative pressure at the negative pressure holes 11, effectively adsorbing the PVC board and preventing it from shifting during the printing process. The design of the replaceable clamping seat 30 allows the device to adapt to PVC boards of different sizes and shapes, improving the versatility and practicality of the device.

[0030] Furthermore, a bracket 12 for fixing the negative pressure fan 40 is installed on one outer wall of the positioning and pressing worktable 10, so that the negative pressure fan 40 can be stably installed on one outer wall of the positioning and pressing worktable 10, thereby ensuring the stable operation and ventilation effect of the negative pressure fan 40.

[0031] Specifically, the end of the connecting frame 22 is provided with a plug groove 23 that is adapted to the size of the connecting plug 32 and is plugged in. The outer wall of the connecting frame 22 is provided with a screw hole 24 that communicates with the plug groove 23. The connecting plug 32 is connected to the connecting frame 22 by a fixing bolt 33 passing through the screw hole 24. This plug-in and bolt fixing method is not only easy to install, but also has a firm connection, which can effectively ensure the stability and reliability of the clamping seat 30.

[0032] In addition, the replaceable clamping seat 30 has several evenly spaced anti-slip protrusions 31 on the side surface that contacts the PVC board. These anti-slip protrusions 31 are made of rubber and have a height of 1-3mm. This allows the clamping seat 30 to provide greater friction and anti-slip effect when clamping the PVC board, effectively preventing the PVC board from sliding or shifting during printing, thereby improving printing accuracy and quality. Simultaneously, the rubber anti-slip protrusions 31 also have a certain degree of elasticity and cushioning, protecting the PVC board surface from damage.

[0033] The working principle of the positioning and clamping device for PVC board printing:

[0034] First, select a suitable replaceable clamping seat 30 according to the size and shape of the PVC board, and fix the connecting plug 32 to the connecting frame 22 with fixing bolts 33 to ensure the stability and reliability of the clamping seat 30.

[0035] Next, the PVC board to be printed is placed on the top surface of the positioning and clamping worktable 10, ensuring that the position of the PVC board corresponds to that of the negative pressure hole 11; then, the clamping hydraulic cylinder 20 is activated, and its piston rod 21 will drive the connecting frame 22 to move towards the PVC board; the connecting frame 22, through the cooperation of the insertion slot 23 and the connecting plug 32, firmly presses the replaceable clamping seat 30 onto the PVC board, realizing the initial positioning of the PVC board;

[0036] At this time, the negative pressure fan 40 is turned on, and its exhaust pipe draws out the air in the negative pressure hollow area 13, thereby forming a negative pressure at the negative pressure hole 11. Under the action of negative pressure, the PVC board is tightly adsorbed on the top surface of the positioning and pressing worktable 10, which further prevents the PVC board from shifting during the printing process.

[0037] Finally, the printing equipment is started to print according to the predetermined pattern and text; during the printing process, the anti-slip protrusions 31 can provide additional friction and anti-slip effect, ensuring that the PVC board remains stable, thereby obtaining a high-quality printing effect.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A positioning and clamping device for PVC board printing, comprising a positioning and clamping worktable (10) for PVC board printing, characterized in that: The positioning and pressing worktable (10) is equipped with clamping hydraulic cylinders (20) at both ends, and replaceable clamping seats (30) are symmetrically arranged at both ends of the top surface of the positioning and pressing worktable (10). A negative pressure fan (40) is installed on one side of the outer wall of the positioning and pressing worktable (10). The positioning and pressing worktable (10) has a negative pressure hollow area (13) inside. The top surface of the positioning and pressing worktable (10) has several uniformly spaced negative pressure holes (11) that are connected to the negative pressure hollow area (13). The exhaust pipe of the negative pressure fan (40) is connected to the inside of the negative pressure hollow area (13). The piston rod (21) of the clamping hydraulic cylinder (20) is connected to a connecting frame (22) with a horizontal L-shaped cross section, and the end of the connecting frame (22) is connected to the back of the replaceable clamping seat (30). The back of the replaceable clamp (30) is fitted with a connector plug (32) that engages with the connector (22).

2. The positioning and clamping device for PVC board printing according to claim 1, characterized in that: A bracket (12) for fixing a negative pressure fan (40) is installed on one outer wall of the positioning and pressing workbench (10).

3. The positioning and clamping device for PVC board printing according to claim 1, characterized in that: The end of the connecting bracket (22) is provided with a plug groove (23) that is adapted to the size of the connecting plug (32) and is plugged in.

4. The positioning and clamping device for PVC board printing according to claim 3, characterized in that: The outer wall of the connecting frame (22) is provided with a screw hole (24) that communicates with the insertion slot (23).

5. The positioning and clamping device for PVC board printing according to claim 4, characterized in that: The connector (32) is connected to the connector (22) by means of a fixing bolt (33) passing through a screw hole (24).

6. The positioning and clamping device for PVC board printing according to claim 1, characterized in that: The replaceable clamping seat (30) has several uniformly spaced anti-slip protrusions (31) on the side surface that contacts the PVC board.

7. The positioning and clamping device for PVC board printing according to claim 6, characterized in that: The anti-slip protrusion (31) is a rubber protrusion, and the height of the protrusion is 1-3mm.

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