A net drawing machine

Abstract

The utility model belongs to screen manufacturing equipment technical field, specifically disclose a kind of net pulling machine, it include: rack;Net clamping mechanism, for the rim of screen, net clamping mechanism is provided with four groups, four groups of net clamping mechanism are respectively located four sides of rack;Lead screw elevator, multiple are provided, multiple lead screw elevators are sequentially transmission connection between, and pass through same deceleration motor drive, to make multiple lead screw elevators synchronous linkage, and the top of the lead screw of multiple lead screw elevators is equipped with connecting piece;Supporting member, for supporting and placing screen frame, supporting member is respectively connected with the connecting piece of multiple lead screw elevators and is fixed. When screen frame rises to contact screen, the tight degree between every position of screen frame and screen is consistent, to make the firm adhesion between every position of screen frame and screen, cannot be separated.

Description

Technical Field

[0001] This utility model relates to the field of screen printing equipment technology, and in particular to a screen stretching machine. Background Technology

[0002] A screen is used for screen printing. It consists of a frame and a screen glued to it. The frame size is fixed. The screen is stretched flat by a stretching machine, maintaining tension and securing it to the frame. The tighter the screen is stretched, the clearer and better the screen printing result.

[0003] For example, the utility model patent with authorization announcement number CN206382223U specifically discloses a precision double-guide rail screen tensioning device. According to its disclosed technical content and drawings, its working principle is as follows: the screen frame is placed on the screen frame support rod of the tensioning device, glue is evenly applied to the support part of the screen frame, the screen is then stretched taut and evenly laid on the screen frame, clamped with a double-guide rail screen clamp, the four-sided adjustment handwheels are rotated, and then the synchronous cylinder is started. The synchronous cylinder rises to tighten the screen. The pressure around the screen and in the middle of the screen is detected by a tension meter and adjusted according to actual needs. After the screen glue dries, it is cut off along the edge of the screen frame.

[0004] However, it is known that cylinders drive piston movement through compressed air, thereby achieving piston rod extension and retraction. But cylinders are limited by the air supply system, making it difficult to ensure consistent piston rod extension and retraction strokes for each cylinder. This results in varying heights of the screen frame on the support rod, leading to inconsistent tension between the screen frame and the screen. Consequently, after the adhesive dries, some sections of the screen frame are not firmly bonded to the screen and are prone to detachment. Furthermore, the above solution uses a tension meter to measure the pressure around the screen and in the center, adjusting it as needed, which is a rather cumbersome process. Utility Model Content

[0005] In order to overcome the defects of the existing technology, this utility model provides a screen pulling machine, which solves the problem that the screen frame is not firmly bonded to the screen and is easy to detach because the lifting height of each position of the screen frame is different.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a net-pulling machine, comprising:

[0007] frame;

[0008] A wire mesh clamping mechanism is used to clamp the edge of the wire mesh. There are four sets of the wire mesh clamping mechanism, which are located on the four sides of the frame.

[0009] The screw jacks are configured in multiple units, which are sequentially connected and driven by the same geared motor to enable synchronous linkage. The top of the screw of each screw jack is equipped with a connecting part.

[0010] Support components are used to support and place the mesh frame, and the support components are respectively connected and fixed to the connecting components of multiple screw jacks.

[0011] As a further embodiment, four screw jacks are provided, arranged in two rows and two columns on the frame. The drive rods of the two screw jacks in the same row are connected by a transmission shaft, and the drive rod of one of the screw jacks is connected to a geared motor. The drive rods of the two screw jacks in the same column away from the geared motor are connected by a sprocket and a chain, so that the four screw jacks can work synchronously.

[0012] As a further solution, several drive mechanisms for driving the mesh clamping mechanism to move horizontally are installed on each side of the frame, so that two mesh clamping mechanisms in the X-axis direction can move closer or further away from each other in the X-axis direction, and two mesh clamping mechanisms in the Y-axis direction can move closer or further away from each other in the Y-axis direction.

[0013] As a further embodiment, the output end of the drive mechanism is provided with a support base;

[0014] The clamping mechanism includes a base and a beam plate. The base is mounted on a support seat and is provided with a first clamp. The beam plate is mounted above the base by multiple support arms and is provided with multiple cylinders. The output ends of the multiple cylinders are connected to the same second clamp, which can clamp and cooperate with the first clamp.

[0015] As a further option, the support member is frame-shaped, consistent with the mesh frame.

[0016] As a further option, the screw jack is a worm gear jack.

[0017] The beneficial effects of this utility model are as follows: By driving multiple screw jacks with the same geared motor, the multiple screw jacks can be linked synchronously, and the screws of the multiple screw jacks can be raised synchronously with consistent stroke. When the support is connected and fixed to the connecting parts of the multiple screw jacks, the height of the support and the mesh frame placed on the support is consistent at every position. When the mesh frame rises to contact the wire mesh, the tension between the mesh frame and the wire mesh is consistent at every position, so that the mesh frame and the wire mesh are firmly bonded and will not detach. Attached Figure Description

[0018] Figure 1This is a perspective view (a) of an embodiment of the present utility model;

[0019] Figure 2 This is a perspective view (second) of an embodiment of the present utility model (hidden support member);

[0020] Figure 3 This is a perspective view (iii) of an embodiment of the present utility model;

[0021] Figure 4 This is a perspective view of the screw jack in an embodiment of the present utility model;

[0022] Figure 5 This is a front view of an embodiment of the present utility model;

[0023] Figure 6 for Figure 5 Enlarged view of point A in the middle.

[0024] In the diagram, 1-frame, 2-net clamping mechanism, 21-base, 22-beam plate, 23-support arm, 24-cylinder, 25-first clamp, 26-second clamp, 3-screw jack, 31-drive rod, 32-screw, 33-connector, 4-drive shaft, 5-gear motor, 6-sprocket, 61-chain, 7-support component, 8-drive mechanism, 81-support seat. Detailed Implementation

[0025] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0026] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this application, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] As attached Figure 1 , 3 As shown in Figure 4, this embodiment provides a screen stretching machine, including:

[0028] Rack 1;

[0029] The clamping mechanism 2 is used to clamp the edge of the wire mesh. There are four sets of clamping mechanisms 2, which are located on the four sides of the frame 1. The four sets of clamping mechanisms 2 clamp the four sides of the wire mesh, thereby enabling the wire mesh to open. The opened wire mesh is located above the frame 1.

[0030] As attached Figure 4 As shown, there are multiple screw jacks 3, which are sequentially connected and driven by the same geared motor 5 to enable synchronous linkage. The top of the screw 32 of each screw jack 3 is provided with a connector 33, which can be a connecting flange.

[0031] As attached Figure 4 As shown, the support member 7 is used to support and place the mesh frame. Specifically, the support member 7 is frame-shaped, consistent with the mesh frame. This allows it to correspond with multiple screw jacks 3, and also saves material costs (compared to plate-shaped support members 7). The multiple screw jacks 3 are distributed in a circular pattern, and the support member 7 is connected and fixed to the connecting members 33 of each screw jack 3. In specific implementation, gaskets are welded to the bottom surface of each support member 7, and then the gaskets are connected and fixed to the connecting members 33 with fastening screws.

[0032] In this embodiment, multiple screw jacks 3 are driven by the same geared motor 5, enabling them to move synchronously and their screws 32 to rise synchronously with consistent stroke. When the support member 7 is connected and fixed to the connecting member 33 of each screw jack 3, the height of the support member 7 and the mesh frame placed on it remains consistent. When the mesh frame rises to contact the mesh, the tension between the mesh frame and the mesh is consistent at every point, ensuring a firm bond between the mesh frame and the mesh and preventing detachment. Furthermore, even when the mesh frame and mesh are taut, it is easy to apply glue to the taut areas on the mesh surface. The glue can penetrate the mesh frame surface and bond firmly (since the mesh has fine pores, glue can be applied to the mesh frame first and then attached to the mesh, or the mesh frame and mesh can be attached first and then glued).

[0033] In addition, since the height of each position of the wire mesh frame is consistent, there is no need to check the pressure around the wire mesh and in the middle of the wire mesh, and there is no need for repeated adjustments, making the operation process simple.

[0034] As attached Figure 4As shown, four screw jacks 3 are installed in two rows and two columns on the frame 1. Specifically, the four screw jacks 3 can be distributed at the four corners of the frame 1. The drive rods 31 of the two screw jacks 3 in the same row are connected by a transmission shaft 4, and one of the drive rods 31 of the screw jacks 3 is connected to a geared motor 5. The drive rods 31 of the two screw jacks 3 in the same column away from the geared motor 5 are connected by a sprocket 6 and a chain 61. When the geared motor 5 drives, the four screw jacks 3 move synchronously, and the screws 32 of the four screw jacks 3 rise and fall synchronously with consistent stroke. At the same time, the connecting parts 33 at the top of the screws 32 of the four screw jacks 3 are used to connect and fix them to the object being lifted.

[0035] As attached Figure 2 As shown, several drive mechanisms 8 are installed on each side of the frame 1 to drive the horizontal movement of the mesh clamping mechanism 2, so that two mesh clamping mechanisms 2 in the X-axis direction can move closer or further apart, and two mesh clamping mechanisms 2 in the Y-axis direction can move closer or further apart. The two mesh clamping mechanisms 2 in the X-axis direction clamp the two sides of the mesh respectively, and the two drive mechanisms 8 drive the two mesh clamping mechanisms 2 to move away from each other, thereby tensioning the mesh in the X-axis direction. The two mesh clamping mechanisms 2 in the Y-axis direction clamp the other two sides of the mesh respectively, and the two drive mechanisms 8 drive the two mesh clamping mechanisms 2 to move away from each other, thereby tensioning the mesh in the Y-axis direction.

[0036] Therefore, the aforementioned drive mechanism 8 is a linear motion drive mechanism 8, such as an electric push rod, a cylinder 24, etc. It should be noted that a pair of drive mechanisms 8 are provided on each side of the frame 1, thereby enhancing the driving force on the mesh clamping mechanism 2 on each side of the frame 1.

[0037] In some embodiments, as shown in the appendix Figure 5-6 As shown, the output end of the drive mechanism 8 is provided with a support base 81, which supports the mesh clamping mechanism 2. The mesh clamping mechanism 2 includes a base 21 and a beam plate 22. The base 21 is mounted on the support base 81, and a first clamp 25 is provided on the base 21. The beam plate 22 is mounted above the base 21 by multiple support arms 23, and multiple cylinders 24 are provided on the beam plate 22. The output ends of the multiple cylinders 24 are connected to the same second clamp 26, which can clamp and engage with the first clamp 25. Specifically, the second clamp 26 is located above the first clamp 25. The multiple cylinders 24 drive the same second clamp 26 to move up and down, thereby clamping or opening the second clamp 26 and the first clamp 25, thus clamping or releasing the mesh. Furthermore, the support arms 23 are C-shaped, allowing the second clamp 26 to be suspended above the first clamp 25, aligning the second clamp 26 and the first clamp 25 in the Z-axis direction.

[0038] It should be noted that, regarding the selection of the screw jack 3, either a worm gear screw jack or a bevel gear screw jack 3 can be chosen. Both can ensure precise and stable lifting of the screw 32, allowing the object being lifted to reach the specified height.

[0039] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. A screen stretching machine, characterized in that: include: Rack (1); The mesh clamping mechanism (2) is used to clamp the edge of the wire mesh. There are four sets of the mesh clamping mechanism (2), and the four sets of the mesh clamping mechanism (2) are located on the four sides of the frame (1). Screw jacks (3) are provided in multiple units. The screw jacks (3) are connected in sequence and driven by the same geared motor (5) so that the screw jacks (3) are linked synchronously. The top of the screw (32) of each screw jack (3) is provided with a connector (33). Support member (7) is used to support and place the mesh frame. The support member (7) is connected and fixed to the connector (33) of multiple screw jacks (3).

2. The screen stretching machine according to claim 1, characterized in that: Four screw jacks (3) are provided, and the four screw jacks (3) are installed on the frame (1) in two rows and two columns. The drive rods (31) of the two screw jacks (3) in the same row are connected by a transmission shaft (4). The drive rod (31) of one of the screw jacks (3) is connected to a geared motor (5). The drive rods (31) of the two screw jacks (3) in the same column away from the geared motor (5) are connected by a sprocket (6) and a chain (61) so that the four screw jacks (3) can be linked synchronously.

3. A screen stretching machine according to claim 1, characterized in that: On the frame (1), there are several drive mechanisms (8) for driving the mesh clamping mechanism (2) to move horizontally, so that the two mesh clamping mechanisms (2) in the X-axis direction can move closer or further away from each other in the X-axis direction, and the two mesh clamping mechanisms (2) in the Y-axis direction can move closer or further away from each other in the Y-axis direction.

4. A screen stretching machine according to claim 3, characterized in that: The output end of the drive mechanism (8) is provided with a support base (81); The clamping mechanism (2) includes a base (21) and a beam plate (22). The base (21) is mounted on a support (81) and a first clamp (25) is provided on the base (21). The beam plate (22) is mounted above the base (21) by multiple support arms (23) and multiple cylinders (24) are provided on the beam plate (22). The output ends of the multiple cylinders (24) are connected to the same second clamp (26). The second clamp (26) can clamp and cooperate with the first clamp (25).

5. A screen stretching machine according to claim 1, characterized in that: The support member (7) is frame-shaped, consistent with the mesh frame.

6. A screen stretching machine according to claim 1, characterized in that: The screw jack (3) is a worm gear jack.

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