Screen frame positioning mechanism of screen printing machine

Abstract

The utility model discloses a screen printing machine screen frame positioning mechanism which comprises a square frame, a left screen frame, a right screen frame, a left positioning piece and a front positioning piece, the left screen frame, the right screen frame, the left positioning piece and the front positioning piece are arranged on the square frame, the left screen frame and the right screen frame are distributed in a left-right mode and can move in the left-right direction, and a plurality of first clamping mechanisms are arranged on the left screen frame and the right screen frame. The first clamping mechanism is used for clamping a screen frame; the left positioning piece is arranged between the left end of the square frame and the left net frame so as to position the position of the left net frame in the left-right direction; the front positioning piece is located in front of the position between the left net frame and the right net frame and used for preventing the net frame from moving forwards so as to position the position of the net frame in the front-back direction. The positioning of the screen frame in the horizontal position can be quickly completed through the left positioning piece and the front positioning piece, the positioning precision is high, the new or cleaned screen frame can be positioned in the original screen frame positioning area, the operation steps are few, and the operation method is simple.

Description

Technical Field

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

[0002] When screen printing machines screen print on different workpieces, they need to be used with different screens (frames). After the screens have been used for a certain period of time, the frames need to be cleaned, replaced, and repaired. This involves removing the frames from the screen frame and then reinstalling the new or cleaned frames. This requires repositioning the frames so that the center of the frames coincides with the center of the worktable in the vertical direction. The repositioning of the frames involves many steps, is inconvenient, time-consuming, and seriously reduces production efficiency. Moreover, the accuracy of the repositioning cannot be guaranteed. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a screen printing machine frame positioning mechanism that facilitates rapid frame positioning and improves positioning accuracy.

[0004] A screen printing machine frame positioning mechanism according to an embodiment of the present invention includes: a square frame and a left screen frame, a right screen frame, a left positioning member, and a front positioning member, all disposed on the square frame. The left screen frame and the right screen frame are distributed left and right and are both movable in the left and right directions. The left screen frame and the right screen frame are each provided with a plurality of first clamping mechanisms, which are used to clamp the screen frame. The left positioning member is disposed between the left end of the square frame and the left screen frame to position the left screen frame in the left and right directions. The front positioning member is located in front of the left screen frame and the right screen frame and is used to prevent the screen frame from moving forward to position the screen frame in the front and back directions.

[0005] It has at least the following beneficial effects:

[0006] Pushing the left mesh frame to the left causes it to move to the left and rest against the left positioning piece, which defines its position in the left-right direction. Then, the right mesh frame is moved to the left, placing its left and right ends onto the left and right mesh frames respectively. Next, the mesh frame is pushed forward, resting against the front positioning piece, thus completing its positioning in the front-back direction. Finally, multiple first clamping mechanisms secure the mesh frame to the left and right mesh frames, and also to the rectangular frame. The left and front positioning pieces facilitate quick and accurate horizontal positioning of the mesh frame, ensuring that both new and cleaned mesh frames are positioned within the existing frame's designated area. The operation is simple and requires few steps.

[0007] According to some embodiments of the present invention, the right mesh frame is provided with a left-right driving mechanism, which is used to drive the mesh frame to move to the left so that the mesh frame is in close contact with the left mesh frame.

[0008] According to some embodiments of the present invention, the left mesh frame includes a left side portion and a left support portion disposed at the lower end of the left side portion, and the right end of the left support portion is used to support the left end of the mesh frame.

[0009] According to some embodiments of the present invention, both the left mesh frame and the right mesh frame are provided with a plurality of second clamping mechanisms, which are used to clamp the mesh frames.

[0010] According to some embodiments of the present invention, a first pad is provided on the left side for abutting against the left end face of the wire frame.

[0011] According to some embodiments of this utility model, the front and rear ends of the left mesh frame and the front and rear ends of the right mesh frame are all connected to the square frame through a third clamping mechanism.

[0012] According to some embodiments of the present invention, the third clamping mechanism includes a support base and a first cylinder disposed on the support base. The output end of the first cylinder is used to press the square frame and the support base together. The support base is connected to the left mesh frame or the right mesh frame through an adjusting member. The adjusting member is used to adjust the height of the left mesh frame or the right mesh frame.

[0013] According to some embodiments of this utility model, both the left mesh frame and the right mesh frame are provided with adapter rods, the adjusting member is a vertically arranged first screw, the upper end of the adjusting member is threadedly connected to the support seat, and the lower end of the adjusting member is rotatably connected to the adapter rod.

[0014] According to some embodiments of the present invention, one end of the left positioning member is provided with a second U-shaped groove, and the frame is provided with a second protrusion structure extending into the second U-shaped groove, so that the left positioning member is connected to the frame, and the other end of the left positioning member is used to abut against the left side of the left mesh frame.

[0015] According to some embodiments of the present invention, the rear side of the front positioning member is provided with a second pad for abutting against the mesh frame.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0018] Figure 1 This is one of the structural schematic diagrams of the wire frame and an embodiment of the present utility model;

[0019] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle;

[0020] Figure 3 This is a second schematic diagram of the structure of the filament in an embodiment of this utility model;

[0021] Figure 4 This is a schematic diagram of the left mesh frame in an embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of the left and right drive mechanism according to an embodiment of the present utility model;

[0023] Figure 6 This is a schematic diagram of the structure of the left positioning member according to an embodiment of the present utility model;

[0024] Icon labels:

[0025] Frame 11, left mesh frame 12, left side part 121, first pad 1211, first slide rail 1212, left support part 122, right mesh frame 13, first clamping mechanism 14, left positioning part 15, second U-shaped groove 151, front positioning part 16, second clamping mechanism 17, left and right drive mechanism 18, third clamping mechanism 19, support seat 191, first cylinder 192, adjusting part 21, adapter rod 22, right positioning part 23, second screw 24. Detailed Implementation

[0026] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element 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.

[0027] In the description of this utility model, the use of "first" and "second" is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features or the order of the technical features.

[0028] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0029] Reference Figure 1 and Figure 3 This utility model discloses a screen printing machine frame positioning mechanism, including: a square frame 11 and a left screen frame 12, a right screen frame 13, a left positioning member 15 and a front positioning member 16, all disposed on the square frame 11.

[0030] The frame 11 includes a left support plate, a rear support plate, a right support plate, and a front support plate that are connected end to end to form a frame shape. The left support plate and the right support plate are both connected to the frame of the screen printing machine, or the front support plate and the rear support plate are both connected to the frame of the screen printing machine.

[0031] The left mesh frame 12 and the right mesh frame 13 are distributed to the left and right and can move in the left and right directions. The left mesh frame 12 and the right mesh frame 13 are each provided with a plurality of first clamping mechanisms 14, which are used to clamp the mesh frame 1. The left positioning member 15 is located between the left end of the square frame 11 and the left mesh frame 12 to position the left mesh frame 12 in the left and right directions. The front positioning member 16 is located in front of the left mesh frame 12 and the right mesh frame 13. The front positioning member 16 is used to prevent the mesh frame 1 from moving forward to position the mesh frame 1 in the front and back directions.

[0032] Pushing the left mesh frame 12 to the left causes it to move to the left and rest against the left positioning member 15, which defines its position in the left-right direction. Then, the right mesh frame 13 is moved to the left, placing the left and right ends of the mesh frame 1 onto the left and right mesh frames 12 and 13 respectively. Next, the mesh frame 1 is pushed forward, resting against the front positioning member 16, thus completing its positioning in the front-back direction. Finally, multiple first clamping mechanisms 14 fix the mesh frame 1 onto the left and right mesh frames 12 and 13, and also fix the left and right mesh frames 12 and 13 onto the square frame 11. The left positioning member 15 and the front positioning member 16 facilitate quick and accurate horizontal positioning of the mesh frame 1, ensuring that both new and cleaned mesh frames 1 can be positioned within the area previously occupied by the mesh frame 1. The operation involves few steps and is simple.

[0033] Reference Figure 3 and Figure 5 In some embodiments, the right mesh frame 13 is provided with a left and right drive mechanism 18. The output end of the left and right drive mechanism 18 faces left. When the output end of the left and right drive mechanism 18 moves to the left, it abuts against the right end face of the mesh frame 1. The left and right drive mechanism 18 is used to drive the mesh frame 1 to move to the left so that the mesh frame 1 is close to the left mesh frame 12. This avoids the reduction of the positional accuracy of the mesh frame 1 in the left and right directions due to the mesh frame 1 not moving to the left position. The mesh frame 1 takes the left mesh frame 12 as the reference for its position in the left and right directions.

[0034] It is understandable that the left mesh frame 12 and the right mesh frame 13 have the same structure and are symmetrically arranged.

[0035] Reference Figure 4 In some embodiments, the left mesh frame 12 includes a left side portion 121 and a left support portion 122 disposed at the lower end of the left side portion 121. The length direction of the left side portion 121 and the left support portion 122 is the front-to-back direction. The left end of the left support portion 122 is connected to the lower end face of the left side portion 121. The left side portion 121 and the left support portion 122 are L-shaped. The left side portion 121 is connected to the frame 11. The right end of the left support portion 122 is used to support the left end of the mesh frame 1.

[0036] The right mesh frame 13 includes a right side portion and a right support portion located at the lower end of the right side portion. The length direction of the right side portion and the right support portion is the front-to-back direction. The right end of the right support portion is connected to the lower end face of the right side portion. The right side portion and the right support portion are L-shaped. The right side portion is connected to the square frame 11. The left end of the right support portion is used to support the right end of the mesh frame 1. The left support portion 122 and the right support portion respectively support the left and right ends of the mesh frame 1, so that the mesh frame 1 is balanced by forces.

[0037] Reference Figure 1 , Figure 3 and Figure 4 In some embodiments, the left mesh frame 12 and the right mesh frame 13 are provided with a plurality of second clamping mechanisms 17. The plurality of first clamping mechanisms 14 and the plurality of second clamping mechanisms 17 are used to clamp the mesh frame 1 to ensure that the mesh frame 1 is firmly attached to the left mesh frame 12 and the right mesh frame 13.

[0038] Reference Figures 1 to 4 Both the left mesh frame 12 and the right mesh frame 13 are equipped with a first slide rail 1212, the length direction of which is the front-to-back direction. A first clamping mechanism 14 is connected to the first slide rail 1212 via a first slider, making the front-to-back position of the first clamping mechanism 14 adjustable. This allows the first clamping mechanisms 14 at different front-to-back positions to clamp different positions on the left end of the mesh frame 1. Similarly, a second clamping mechanism 17 is connected to the first slide rail 1212 via another first slider, making the front-to-back position of the second clamping mechanism 17 adjustable.

[0039] It is understood that the first clamping mechanism 14 includes a first cylinder, the cylinder body of the first cylinder is connected to the first slider on the left mesh frame 12, the first cylinder is located above the left support part 122, the piston rod of the first cylinder faces downward, and the piston rod of the first cylinder is used to press the mesh frame 1 onto the left support part 122, so as to fix the left end of the mesh frame 1 onto the left mesh frame 12.

[0040] The second clamping mechanism 17 is a first bolt or a first screw. The first bolt or the first screw is threadedly connected to the first slider on the left mesh frame 12. The first bolt or the first screw is located above the left support part 122. The lower end of the first bolt or the first screw is used to press the mesh frame 1 onto the left support part 122, so as to fix the left end of the mesh frame 1 onto the left mesh frame 12.

[0041] Reference Figure 4 In some embodiments, the left side portion 121 is provided with a first pad 1211 for abutting against the left end face of the wire frame 1. The left end face of the wire frame 1 abuts against the left side portion 121 through the first pad 1211. There is no direct friction between the left end face of the wire frame 1 and the left side portion 121, which can reduce the wear of the left end face of the wire frame 1 and the left side portion 121.

[0042] A first pad 1211 is provided on the right side for abutting against the right end face of the wire mesh frame 1. The right end face of the wire mesh frame 1 is abutted against the right side by the first pad 1211. It is conceivable that the first pad 1211 can be made of wear-resistant or elastic material.

[0043] In this embodiment, there are four first clamping mechanisms 14 and four second clamping mechanisms 17. Two of the first clamping mechanisms 14 and two of the second clamping mechanisms 17 are mounted on the first slide rail 1212 on the left mesh frame 12 via a first slider. The other two first clamping mechanisms 14 and two other second clamping mechanisms 17 are mounted on the first slide rail 1212 on the right mesh frame 13 via another first slider. The first slide rail 1212 on the left mesh frame 12 is located on the upper end face of the left side portion 121, and the first slide rail 1212 on the right mesh frame 13 is located on the upper end face of the right side portion. There are two left and right driving mechanisms 18, which are distributed front and rear on the right side portion of the right mesh frame 13. The left and right driving mechanisms 18 can be second cylinders.

[0044] In this embodiment, there are two front positioning members 16, which are distributed on the left and right sides.

[0045] In some embodiments, the front positioning member 16 is connected to a U-shaped block, which fits onto the front end of the frame 11 through a U-shaped notch. The opening of the U-shaped notch faces forward. A second bolt or screw is threaded onto the U-shaped block, which is used to press the front end of the frame 11 against the inner wall of the U-shaped block. By adjusting the depth to which the front end of the frame 11 extends into the U-shaped notch, the position of the U-shaped block and the front positioning member 16 in the front-back direction can be adjusted, thereby adjusting the positioning position of the mesh frame 1 in the front-back direction.

[0046] In another embodiment, the front positioning member 16 is provided with a plurality of first oblong holes, the length direction of which is the front-to-back direction. The front end of the frame 11 is provided with a plurality of first fasteners, which pass through the first oblong holes and are threadedly connected to the front end of the frame 11. Loosening the first fasteners adjusts the front-to-back position of the front positioning member 16, while tightening them fixes the front positioning member 16 to the front end of the frame 11. Adjusting the position of the front positioning member 16 in the front-to-back direction adjusts the positioning position of the mesh frame 1 in the front-to-back direction. The first fasteners can be third bolts or third screws.

[0047] Reference Figure 1 , Figure 3 and Figure 4 In some embodiments, the front and rear ends of the left mesh frame 12 and the front and rear ends of the right mesh frame 13 are connected to the box 11 through the third clamping mechanism 19. The third clamping mechanism 19 enables the box 11 to be detachably connected to the front and rear ends of the left mesh frame 12 and the front and rear ends of the right mesh frame 13, thus achieving quick connection and disassembly of the box 11 to the left mesh frame 12 and the right mesh frame 13.

[0048] Reference Figure 2 In some embodiments, the third clamping mechanism 19 includes a support base 191 and a first cylinder 192 disposed on the support base 191. The output end of the first cylinder 192 is used to press the frame 11 and the support base 191 together to achieve the connection between the frame 11 and the support base 191. The support base 191 is connected to the left mesh frame 12 or the right mesh frame 13 through an adjusting member 21. The adjusting member 21 is used to adjust the height of the left mesh frame 12 or the right mesh frame 13 to achieve the adjustment of the height and level of the left mesh frame 12 or the right mesh frame 13.

[0049] Understandably, the support base 191 is provided with a first U-shaped groove, the opening of which faces forward or backward. The frame 11 is provided with a first protrusion extending into the first U-shaped groove. The output end of the first cylinder 192 abuts against the first protrusion, and the first cylinder 192 drives the first protrusion and the inner wall of the first U-shaped groove to press together, thereby connecting the support base 191 and the frame 11 together. Specifically, the first protrusion is a front support plate or a rear support plate.

[0050] Reference Figure 2 In some embodiments, both the left mesh frame 12 and the right mesh frame 13 are provided with adapter rods 22, and the adjusting member 21 is a vertically arranged first screw. The upper end of the adjusting member 21 is threadedly connected to the support base 191, and the lower end of the adjusting member 21 is rotatably connected to the adapter rod 22. Rotating the adjusting member 21 causes the adjusting member 21 to rise and fall, and the adjusting member 21 carries the adapter rod 22 to rise and fall with the left mesh frame 12 or the right mesh frame 13.

[0051] Specifically, the support base 191 is provided with a second oblong hole. The length direction of the second oblong hole is vertical, and the axial direction of the second oblong hole is horizontal. The adapter rod 22 passes through the second oblong hole. The upper end of the adjusting member 21 extends to the top of the support base 191 and is threadedly connected to the upper side wall of the second oblong hole. The lower end of the adjusting member 21 extends into the second oblong hole and is rotatably connected to the adapter rod 22. The end of the adapter rod 22 away from the left mesh frame 12 is threadedly connected to a first nut. The first nut abuts against the support base 191. Tightening the first nut allows the first nut and the adapter rod 22 to fix the support base 191 and the left mesh frame 12 together. The specific operation method is as follows: loosen the first nut, rotate the adjusting part 21 to adjust the rise and fall of the adapter rod 22 in the second waist-shaped hole, that is, to adjust the height of the left mesh frame 12. When the adapter rod 22 and the left mesh frame 12 are at a suitable height, tighten the first nut to fix the support base 191 and the left mesh frame 12 together.

[0052] Reference Figure 6 In some embodiments, one end of the left positioning member 15 is provided with a second U-shaped groove 151, and the frame 11 is provided with a second protrusion structure extending into the second U-shaped groove 151, so that the left positioning member 15 is connected to the frame 11. The other end of the left positioning member 15 is used to abut against the left side of the left mesh frame 12. The left positioning member 15 prevents the mesh frame 1 from moving to the left, thereby limiting the position of the mesh frame 1 in the left-right direction. Specifically, the second protrusion structure is a left support plate.

[0053] A second screw 24 is threaded onto the side wall of the second U-shaped groove 151. One end of the second screw 24 extends into the second U-shaped groove 151 and abuts against the second protruding structure. When the second screw 24 is turned, one end of the second screw 24 can be further inserted into or removed from the second U-shaped groove 151. When one end of the second screw 24 is further inserted into the second U-shaped groove 151, the second end of the second screw 24 presses the second protruding structure and the inner wall of the second U-shaped groove 151 together, thereby fixing the square frame 11 and the left positioning member 15 together. When one end of the second screw 24 is further removed from the second U-shaped groove 151, the area of ​​the second U-shaped groove 151 blocked by one end of the second screw 24 is reduced, which makes it easier for the square frame 11 to extend into the second U-shaped groove 151 or for the left positioning member 15 to be fitted onto the square frame 11.

[0054] Reference Figure 1 and Figure 3 The screen printing machine frame positioning mechanism also includes a right positioning component 23. The right positioning component 23 has the same structure as the left positioning component 15. The right positioning component 23 is located on the right support plate. The right positioning component 23 limits the maximum stroke of the right screen frame 13 to the right, so as to avoid the gap between the left screen frame 12 and the right screen frame 13 being too large, thereby preventing the screen frame 1 from being inconvenient to be mounted on the left screen frame 12 and the right screen frame 13.

[0055] In some embodiments, the rear side of the front positioning member 16 is provided with a second pad 161 for abutting against the wire mesh frame 1. The rear side of the front positioning member 16 abuts against the front end face of the wire mesh frame 1 through the second pad 161, and the front positioning member 16 does not abut against the front end face of the wire mesh frame 1, which can reduce the wear between the front positioning member 16 and the front end face of the wire mesh frame 1. The second pad 161 may be made of wear-resistant or elastic material.

[0056] Understandably, the frame 11 has graduations, with the length of the graduations pointing left and right. By observing the graduations, the position of the frame 1 in the left and right direction can be easily determined. Specifically, both the front support plate and the rear support plate have graduations.

[0057] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0058] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A screen printer screen frame positioning mechanism, characterized by, The application relates to a screen printing machine, which comprises the following parts: a square frame (11) for connecting with the frame of a screen printing machine; a left screen frame (12) and a right screen frame (13) arranged on the square frame (11), the left screen frame (12) and the right screen frame (13) being arranged on the left and right sides of the square frame (11) and being capable of moving along the left and right directions, a plurality of first clamping mechanisms (14) being arranged on the left screen frame (12) and the right screen frame (13), and the first clamping mechanisms (14) being used for clamping a screen frame (1); a left positioning member (15) arranged between the left end of the square frame (11) and the left screen frame (12) and used for positioning the left screen frame (12) in the left and right directions; a front positioning member (16) arranged on the square frame (11) and located in front of the left screen frame (12) and the right screen frame (13), the front positioning member (16) being used for blocking the front movement of the screen frame (1) and positioning the screen frame (1) in the front and back directions.

2. The screen printer screen frame positioning mechanism of claim 1, wherein, A left and right driving mechanism (18) is arranged on the right screen frame (13) and used for driving the screen frame (1) to move leftwards so that the screen frame (1) is tightly attached to the left screen frame (12).

3. The screen printer screen frame positioning mechanism of claim 1, wherein, The left screen frame (12) comprises a left side part (121) and a left supporting part (122) arranged at the lower end of the left side part (121), and the right end of the left supporting part (122) is used for supporting the left end of the screen frame (1).

4. The screen printer screen positioning mechanism of claim 1 or 3, wherein, A plurality of second clamping mechanisms (17) are arranged on the left screen frame (12) and the right screen frame (13), and the second clamping mechanisms (17) are used for clamping the screen frame (1).

5. The screen printer screen positioning mechanism of claim 3, wherein, A first pad (1211) is arranged on the left side part (121) and used for abutting against the left end surface of the screen frame (1).

6. The screen printer screen frame positioning mechanism of claim 1, wherein, The front and back ends of the left screen frame (12) and the front and back ends of the right screen frame (13) are connected with the square frame (11) through third clamping mechanisms (19).

7. The screen printer screen positioning mechanism of claim 6, wherein, The third clamping mechanism (19) comprises a supporting seat (191) and a first cylinder (192) arranged on the supporting seat (191), the output end of the first cylinder (192) is used for pressing the square frame (11) and the supporting seat (191) together, the supporting seat (191) is connected with the left screen frame (12) or the right screen frame (13) through an adjusting member (21), and the adjusting member (21) is used for adjusting the height of the left screen frame (12) or the right screen frame (13).

8. The screen printer screen frame positioning mechanism of claim 7, wherein, An adapter rod (22) is arranged on the left screen frame (12) and the right screen frame (13), the adjusting member (21) is a first screw rod arranged vertically, the upper end of the adjusting member (21) is threadedly connected with the supporting seat (191), and the lower end of the adjusting member (21) is rotationally connected with the adapter rod (22).

9. The screen printer screen frame positioning mechanism of claim 1, wherein, One end of the left positioning member (15) is provided with a second U-shaped groove (151), and the square box (11) is provided with a second protruding structure extending into the second U-shaped groove (151), so that the left positioning member (15) is connected to the square box (11), and the other end of the left positioning member (15) is used for abutting against the left side surface of the left mesh frame (12).

10. The screen printer screen frame positioning mechanism of claim 1, wherein, The rear side of the front positioning member (16) is provided with a second pad block used for abutting against the mesh frame (1).

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