Flexible clamping protection structure of screen printing plate screen stretching machine

Abstract

The utility model discloses a flexible clamping protection structure of a screen printing plate screen stretching machine, and relates to the technical field of screen stretching machine chucks. The two clamping frames are fixedly arranged on the machine body; the clamping frame is of an inverted-U-shaped structure, and the silk screen is arranged in the open end of the clamping frame. The connecting block is fixedly arranged between the front clamping frame and the rear clamping frame, and the right side of the connecting block and the right sides of the clamping frames are arranged at the same vertical end. The number of the supporting blocks is two, the supporting blocks are fixedly arranged on the upper left side of the clamping frame, grooves are formed in the upper sides of the supporting blocks, and movable handles are arranged in the grooves in a hinged mode through hinge shafts. The connecting handle is fixedly arranged at the bottoms of the right sides of the front and rear movable handles; the two pressing balls are respectively arranged in the clamping frame; the two elastic clamping assemblies are arranged on the upper sides of the pressing balls correspondingly. The pressing and clamping force is controlled through the spring, the silk screen is prevented from being damaged in the clamping process, operation is easy, and the quality of the silk screen is improved.

Description

Technical Field

[0001] This utility model relates to the field of screen printing stencil clamp technology, specifically to a flexible clamping and protective structure for a screen printing stencil stretching machine. Background Technology

[0002] A screen printing stencil stretching machine (also known as a screen stretching machine or screen pulling machine) is a specialized piece of equipment used in the screen printing stencil making process. It stretches and fixes the screen (such as nylon, polyurethane fiber, or stainless steel metal screen) to the frame with a specific tension, providing a basic carrier for subsequent stencil making. Traditional screen stretching machines usually use rigid clamping mechanisms (such as metal clamps or pneumatic pressure blocks) to fix the edges of the screen, which can easily cause scratches, indentations, or tears to the screen. Utility Model Content

[0003] The purpose of this utility model is to address the shortcomings and deficiencies of the existing technology by providing a flexible clamping and protective structure for a screen printing stencil sheet forming machine that is simple in structure, reasonable in design, and easy to use. The structure uses a spring to control the downward clamping force, thus preventing damage to the screen during clamping. This not only simplifies operation but also improves the quality of the screen.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: It comprises:

[0005] The clamping frame consists of two clamping frames, which are fixedly mounted on the machine body; and the clamping frame has an inverted "U" shaped structure, with wire mesh placed inside the open end of the clamping frame;

[0006] A connecting block is fixedly disposed between two clamping frames, and the right side of the connecting block and the right side of the clamping frame are disposed on the same vertical end.

[0007] Support blocks, there are two support blocks, which are fixedly set on the upper left side of the clamping frame respectively. The upper side of the support block is provided with a groove, and a movable handle is hinged in the groove through a hinge shaft.

[0008] A connecting handle, wherein the connecting handle is fixedly disposed at the bottom right side of the two movable handles at the front and rear;

[0009] An electric push rod is fixedly installed in the lower middle part of the connecting block; after the pushing end of the electric push rod passes through the connecting block, a drive cylinder is provided; the upper end of the drive cylinder is movably inserted into the through groove inside the connecting handle; insert rods are inserted and fixed on both the front and rear sides of the drive cylinder, and the insert rods are slidably installed in the through grooves opened on the outer side of the through groove.

[0010] Two pressure balls are provided, each disposed inside the clamping frame.

[0011] Two elastic clamping components are provided, each disposed on the upper side of the pressure ball.

[0012] With the above technical solution, the wire mesh is inserted into the clamping frame. The electric push rod drives the two movable handles at the front and rear to press, and the elastic clamping assembly drives the pressure ball to limit and tighten the wire mesh.

[0013] As a further improvement of this utility model, the elastic clamping assembly includes:

[0014] The boss, which consists of two bosses, is symmetrically and fixedly installed at the bottom of the movable handle, and a moving groove is provided inside the boss.

[0015] The support block is located between two front and rear protrusions, and a support rod is inserted and fixed inside the support block. The front and rear ends of the support rod are respectively slidably inserted into the corresponding moving grooves.

[0016] The guide frame is fixedly installed on the upper side of the clamping frame, and the left side of the horizontal end of the guide frame is connected to the support block. The guide frame is located on the lower side of the groove, and the support block passes through the horizontal end of the guide frame.

[0017] The connecting rod is fixedly installed at the bottom of the support block, and after passing through the upper horizontal end of the clamping frame, it is connected to the pressure ball.

[0018] A convex ring is sleeved and fixed to the upper end of the connecting rod, and the convex ring is located on the lower side of the horizontal end of the guide frame;

[0019] The spring is movably sleeved on the connecting rod and is located between the guide frame and the upper horizontal end of the clamping frame. The upper end of the spring is connected to the convex ring, and the lower end of the spring is connected to the upper horizontal end of the clamping frame.

[0020] With the above technical solution design, when the movable handle rotates around the hinge axis, it causes the support block to move within the guide frame, which in turn causes the connecting rod to move, thus driving the pressure ball to move.

[0021] As a further improvement of this utility model, an arc-shaped groove is provided in the horizontal end of the lower side of the clamping frame, and the arc-shaped groove is arranged opposite to the pressure ball;

[0022] Through the above technical solution design, the pressure ball presses the wire mesh tightly into the arc-shaped groove.

[0023] As a further improvement of this utility model, a rubber pad is provided on the pressure ball;

[0024] Through the above technical solution design, the rubber pad protects the wire mesh while holding it in place.

[0025] As a further improvement of this utility model, a connecting groove is provided on the upper side of the pressure ball, and an installation rod is fixedly provided at the bottom end of the connecting rod. The installation rod is inserted into the connecting groove, and slots are provided on both the left and right sides of the installation rod. The slots are arc-shaped. A screw is fixedly provided on the inner wall of both the left and right sides of the connecting groove. A screw tube is screwed onto the screw, and a retaining ball is fixedly provided at the inner end of the screw tube. The retaining ball is engaged in the slot.

[0026] With the above technical solution design, the mounting rod is inserted into the connecting groove, and the screw tube is manually rotated to move it and cause the clamping ball to be clamped in the groove, so that the connecting rod and the pressure ball are connected.

[0027] Compared with the prior art, the beneficial effects of this utility model are:

[0028] 1. One electric actuator can drive the two movable handles at the front and rear to press synchronously, which not only reduces the intensity of manual operation, but also improves the efficiency of operation.

[0029] 2. Add a guide frame to the upper side of the clamping mechanism to guide the support block. When the movable handle is rotated, the support block moves.

[0030] 3. A convex ring is installed on the connecting rod. When the connecting rod moves downward to press the pressure ball, the convex ring cooperates with the spring to limit the downward movement of the connecting rod, prevent excessive movement, and provide pressure protection for the wire mesh.

[0031] 4. The connection between the pressure ball and the connecting rod is detachable, making it easy to replace the pressure ball. In addition, a rubber pad has been added to the bottom of the pressure ball to protect the pressed wire mesh part. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure of this utility model.

[0033] Figure 2 yes Figure 1 A schematic diagram of the southeast isometric structure.

[0034] Figure 3 yes Figure 2 Enlarged view of part A.

[0035] Figure 4 This is a schematic diagram of the internal structure of the clamping frame in this utility model.

[0036] Figure 5 yes Figure 4 Enlarged view of part B.

[0037] Explanation of reference numerals in the attached figures:

[0038] Clamping frame 1, arc groove 1-1, connecting block 2, support block 3, groove 3-1, movable handle 4, connecting handle 5, electric push rod 6, drive cylinder 7, insertion rod 8, pressure ball 9, connecting groove 9-1, elastic clamping assembly 10, boss 10-1, support block 10-2, support rod 10-3, guide frame 10-4, connecting rod 10-5, convex ring 10-6, spring 10-7, rubber pad 11, mounting rod 12, slot 12-1, screw 13, screw tube 14, clamping ball 15 Detailed Implementation

[0039] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. The preferred embodiments described are only examples. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Example

[0040] Please see Figures 1-5 This embodiment includes:

[0041] Clamping frame 1, there are two clamping frames 1, which are fixedly installed on the machine body; and the clamping frame 1 is set with an inverted "U" shaped structure, with wire mesh set in the open end of the clamping frame 1; an arc groove 1-1 is opened in the horizontal end of the lower side of the clamping frame 1;

[0042] Connecting block 2 is fixedly disposed between the front and rear clamping frames 1, and the right side of connecting block 2 and the right side of clamping frame 1 are disposed on the same vertical end.

[0043] Support block 3, there are two support blocks 3, which are fixedly set on the upper left side of the clamping frame 1 respectively. The upper side of the support block 3 is provided with a groove 3-1, and a movable handle 4 is hinged in the groove 3-1 through a hinge shaft.

[0044] Connecting handle 5, which is fixedly installed at the bottom right side of the two movable handles 4 at the front and rear;

[0045] An electric push rod 6 is fixedly installed in the lower middle part of the connecting block 2. The specific model of the electric push rod 6 is purchased directly from the market and installed according to the actual usage requirements. After the pushing end of the electric push rod 6 passes through the connecting block 2, a drive cylinder 7 is provided. The upper end of the drive cylinder 7 is movably inserted into the through groove inside the connecting handle 5. Insert rods 8 are inserted and fixed on both the front and rear sides of the drive cylinder 7. The insert rods 8 are slidably installed in the through groove opened on the outside of the through groove.

[0046] Two pressure balls 9 are respectively disposed inside the clamping frame 1; the pressure balls 9 are arranged opposite to the arc groove 1-1, and a rubber pad 11 is sleeved on the pressure balls 9.

[0047] Two elastic clamping components 10 are respectively disposed on the upper side of the pressure ball 9;

[0048] With the above technical solution design, the wire mesh is inserted into the clamping frame 1. The electric push rod 6 drives the two movable handles 4 at the front and rear to press, and the elastic clamping assembly 10 drives the pressure ball 9 to limit and tighten the wire mesh.

[0049] Using the above design scheme, Example

[0050] Please see Figures 1-5 Based on Embodiment 1, the elastic clamping assembly 10 is further improved and includes:

[0051] The boss 10-1 consists of two bosses, which are symmetrically and fixedly disposed at the bottom of the movable handle 4, and a movable groove is provided in the boss 10-1.

[0052] Support block 10-2 is disposed between two front and rear protrusions 10-1, and a support rod 10-3 is inserted and fixed inside the support block 10-2. The front and rear ends of the support rod 10-3 are respectively slidably inserted into the corresponding moving grooves.

[0053] Guide frame 10-4 is fixedly installed on the upper side of clamping frame 1, and the left side of the horizontal end of guide frame 10-4 is connected to support block 3. Guide frame 10-4 is installed on the lower side of groove 3-1, and support block 10-2 passes through the horizontal end of guide frame 10-4.

[0054] The connecting rod 10-5 is fixedly installed at the bottom of the support block 10-2, and after passing through the upper horizontal end of the clamping frame 1, the connecting rod 10-5 is connected to the pressure ball 9.

[0055] The convex ring 10-6 is sleeved and fixed to the upper end of the connecting rod 10-5, and the convex ring 10-6 is located on the lower side of the horizontal end of the guide frame 10-4.

[0056] Spring 10-7 is movably sleeved on connecting rod 10-5, and spring 10-7 is located between guide frame 10-4 and upper horizontal end of clamping frame 1. The upper end of spring 10-7 is connected to protruding ring 10-6, and the bottom end of spring 10-7 is connected to upper horizontal end of clamping frame 1.

[0057] Through the above technical solution design, when the movable handle 4 rotates around the hinge axis, the support block 10-2 moves within the guide frame 10-4, causing the connecting rod 10-5 to move, which in turn drives the pressure ball 9 to move. Example

[0058] Please see Figures 1-5 Based on Embodiment 1, further improvements are made. The upper side of the pressure ball 9 is provided with a connecting groove 9-1. The bottom end of the connecting rod 10-5 is fixedly provided with an installation rod 12, which is inserted into the connecting groove 9-1. The left and right sides of the installation rod 12 are provided with slots 12-1, which are arc-shaped. The inner walls of the left and right sides of the connecting groove 9-1 are fixedly provided with screw rods 13. A screw tube 14 is screwed onto the screw rod 13. The inner end of the screw tube 14 is fixedly provided with a retaining ball 15, which is engaged in the slot 12-1.

[0059] With the above technical solution design, the mounting rod 12 is inserted into the connecting groove 9-1, and the screw tube 14 is manually rotated to move it and drive the locking ball 15 to lock in the locking groove 12-1, so that the connecting rod 10-5 is connected to the pressure ball 9.

[0060] When using this utility model, the wire mesh is threaded through the clamping frame 1, the pressure ball 9 is sleeved on the mounting rod 12, and the screw tube 14 is manually rotated to make the clamping ball 15 clamp onto the mounting rod 12, so that the connecting rod 10-5, the mounting rod 12 and the pressure ball 9 are connected as one unit; by starting the electric push rod 6, it drives the two movable handles 4 to press. The movable handles 4 rotate around the hinge center of the hinge shaft to make the support block 10-2 move downward, and drive the connecting rod 10-5 to move downward. At this time, the spring 10-7 is compressed. When the convex ring 10-6 presses the spring 10-7 downward, the pressure ball 9 presses the wire mesh into the arc groove 1-1 and tightens the wire mesh.

[0061] Compared with the prior art, the beneficial effects of this utility model are:

[0062] 1. One electric push rod 6 can drive the two movable handles 4 at the front and rear to press synchronously, which not only reduces the intensity of manual operation, but also improves the efficiency of operation.

[0063] 2. Add a guide frame 10-4 to the upper side of the clamping ring to guide the support block 10-2. When the movable handle 4 rotates, the support block 10-2 moves.

[0064] 3. A convex ring 10-6 is provided on the connecting rod 10-5. When the connecting rod 10-5 moves downward to press the pressure ball 9, the convex ring 10-6 cooperates with the spring 10-7 to limit the downward movement of the connecting rod 10-5, prevent excessive movement, and provide pressure protection for the wire mesh.

[0065] 4. The connection between the pressure ball 9 and the connecting rod 10-5 is detachable, making it easy to replace the pressure ball 9. In addition, a rubber pad 11 is added to the bottom of the pressure ball 9 to protect the pressed wire mesh part.

[0066] For those skilled in the art, modifications can be made to the technical solutions described in the foregoing embodiments, and equivalent substitutions can be made to some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A flexible clamping guard structure for a screen printing screen stretcher, characterized by: It contains: Clamping frame (1), the clamping frame (1) is two, fixedly arranged on the machine body; and the clamping frame (1) is provided with a inverted "U" structure, and the screen is arranged in the open end of the clamping frame (1); Connecting block (2), the connecting block (2) is fixedly arranged between the front and rear two clamping frames (1), and the right side of the connecting block (2) is arranged on the same vertical end with the right side of the clamping frame (1); Support block (3), the support block (3) is two, respectively fixedly arranged on the left upper side of the clamping frame (1), the upper side of the support block (3) is provided with a recess (3-1), and the recess (3-1) is hingedly provided with a handle (4) through a hinge shaft; Connecting handle (5), the connecting handle (5) is fixedly arranged at the right side bottom of the front and rear two handles (4); Electric push rod (6), the electric push rod (6) is fixedly arranged at the lower middle of the connecting block (2); the driving cylinder (7) is arranged after the pushing end of the electric push rod (6) passes through the connecting block (2); the upper end of the driving cylinder (7) is movably arranged in the through slot inside the connecting handle (5); the plug rod (8) is inserted and fixed on the front and rear sides of the driving cylinder (7), and the plug rod (8) is slidably arranged in the strip slot throughly arranged outside the through slot; Ball (9), the ball (9) is two, respectively arranged inside the clamping frame (1); Elastic clamping assembly (10), the elastic clamping assembly (10) is two, respectively arranged on the upper side of the ball (9).

2. The flexible clamping guard structure of a screen printing screen stretcher according to claim 1, characterized in that: The elastic clamping assembly (10) contains: Boss (10-1), the boss (10-1) is two, fixedly arranged on the bottom of the handle (4) in front of and behind each other, and the boss (10-1) is provided with a moving slot; Support block (10-2), the support block (10-2) is arranged between the two bosses (10-1), and the support rod (10-3) is arranged in the support block (10-2); the front and rear ends of the support rod (10-3) are slidably arranged in the corresponding moving slot; Guide frame (10-4), the guide frame (10-4) is fixedly arranged on the upper side of the clamping frame (1), and the left side of the horizontal end of the guide frame (10-4) is connected with the support block (3), and the guide frame (10-4) is arranged on the lower side of the recess (3-1), and the support block (10-2) is arranged in the horizontal end of the guide frame (10-4); Connecting rod (10-5), the connecting rod (10-5) is fixedly arranged on the bottom of the support block (10-2), and the connecting rod (10-5) passes through the upper horizontal end of the clamping frame (1) and is connected with the ball (9); Convex ring (10-6), the convex ring (10-6) is sleeved and fixed on the upper end of the connecting rod (10-5), and the convex ring (10-6) is arranged on the lower side of the horizontal end of the guide frame (10-4); A spring (10-7) movably sleeved on the connecting rod (10-5) is arranged between the guide frame (10-4) and the upper horizontal end of the clamping frame (1), the upper end of the spring (10-7) is connected with the convex ring (10-6), and the bottom end of the spring (10-7) is connected with the upper horizontal end of the clamping frame (1).

3. The flexible clamping guard structure of a screen printing screen stretcher according to claim 1, characterized in that: An arc-shaped groove (1-1) is formed in the lower horizontal end of the clamping frame (1), and the arc-shaped groove (1-1) is arranged opposite to the pressing ball (9).

4. The flexible clamping guard structure of a screen printing screen stretcher according to claim 1, characterized in that: The pressing ball (9) is sleeved with a rubber pad (11).

5. The flexible clamping guard structure of a screen printing screen stretcher according to claim 1, characterized in that: A connecting groove (9-1) is formed in the upper side of the pressing ball (9), the bottom end of the connecting rod (10-5) is fixedly provided with a mounting rod (12), the mounting rod (12) is inserted into the connecting groove (9-1), and the left and right sides of the mounting rod (12) are both provided with a clamping groove (12-1) in an arc-shaped structure; the left and right inner walls of the connecting groove (9-1) are both fixedly provided with a screw rod (13), the screw rod (13) is threadedly rotatably provided with a screw pipe (14), the inner end of the screw pipe (14) is fixedly provided with a clamping ball (15), and the clamping ball (15) is clamped into the clamping groove (12-1).

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