Screen printing device with positioning mechanism
By designing the cooperation of the annular plate, clamping plate, tension spring and guide mechanism in the silk screen printing device, the problem of inaccurate positioning of the PCB board is solved, and more efficient printing accuracy and printing quality are achieved.
Patent Information
- Application Number
- CN202421136355.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-23
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-05-23
AI Technical Summary
The existing PCB silk screen printing devices are inconvenient for synchronous linkage when fixing the PCB board, resulting in inaccurate positioning, which easily leads to offset printing patterns and reduces printing quality.
A silk screen printing device with a positioning mechanism is designed, including an annular plate, a clamping plate, a tension spring and a guide mechanism. The annular plate is driven up and down through a cylinder, and the PCB plate is automatically clamped and positioned by the combination of the tension spring and the spring to ensure that it is Accurately aligned with the silk screen mechanism.
It realizes precise positioning of PCB boards, improves printing accuracy and printing quality, avoids printing pattern offsets, and makes use more convenient.
Smart Images
Figure CN222271579U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of screen printing devices with positioning mechanisms, in particular to a screen printing device with a positioning mechanism. Background Art
[0002] Screen printing refers to using a silk screen as a base and making a silk screen plate with graphics or text through a photosensitive platemaking method. Silk screen plates are widely used in the PCB board manufacturing industry. Printing is done based on the basic principle that the mesh holes of the graphic part of the silk screen plate can pass through ink or latex, while the mesh holes of the non-graphic part cannot pass through ink or latex, thereby realizing silk screen processing of PCB boards.
[0003] For example, a Chinese patent (publication number: CN219096221 U) discloses a PCB screen printing device, including a screen printing stencil, which is mounted on the bottom end of an ink housing, and the top end of the ink housing is fixedly connected to the telescopic tail end of a hydraulic cylinder, which is mounted on the top wall of a housing, and a PCB board is arranged directly below the screen printing stencil, and the PCB board is detachably connected to a lower enclosure frame, one end of a linkage shaft and a transmission shaft are respectively fixedly connected to the lower enclosure frame, and the other ends are respectively rotatably connected to the housing, and a flip assembly is drivingly connected to the transmission shaft, so that the transmission shaft is driven to rotate by the flip assembly to flip the lower enclosure frame, so that the lower plate surface of the PCB board faces the screen printing stencil, and the flip operation of the PCB board does not require positioning and adjusting its screen printing position, and the operation is convenient, which helps to improve the screen printing processing efficiency of both sides of the PCB board.
[0004] However, the above-mentioned search patent still has some shortcomings. When printing on the PCB board, the PCB board is fixed by screws arranged on both sides of the lower frame. The screws on both sides need to be adjusted manually and cannot be operated synchronously, which makes it inconvenient to position the PCB board when fixing, and cannot ensure that the PCB board is placed in the center relative to the ink housing up and down, which leads to the inability of the ink housing to accurately position for printing, and easily causes the printed pattern to shift, reducing the printing quality and causing certain inconveniences in use. Therefore, a silk screen printing device with a positioning mechanism is proposed to solve the above problems. Utility Model Content
[0005] In view of the shortcomings of the prior art, the utility model provides a silk screen printing device with a positioning mechanism, which has the advantages of facilitating improved positioning printing accuracy, etc., and solves the problem that the device disclosed in the above-mentioned search patent is not convenient for positioning the PCB board and is not convenient for ensuring positioning printing accuracy.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a screen printing device with a positioning mechanism, comprising a box body, on the inner top wall of which a screen printing mechanism is installed;
[0007] Two cylinders are fixed on the inner bottom wall of the box body, a connecting block is fixed on the top of the cylinder, an annular plate is fixed between the two connecting blocks, a positioning mechanism is provided on the annular plate, and a guiding mechanism is provided on the box body;
[0008] The positioning mechanism includes a loading platform fixed on the bottom wall of the box body, a loading plate fixed on the top surface of the loading platform, two clamping plates slidably connected between the front and rear inner walls of the annular plate, two connecting rods penetrating the annular plate and slidably connected thereto are fixed to the opposite sides of the two clamping plates, a pulling plate is fixed on the side of the connecting rod facing away from the clamping plate, a tension spring is fixed on the side of the pulling plate facing the annular plate, a mounting plate is fixed on the bottom surface of the clamping plate, and a guide wheel is installed on the side of the mounting plate facing the loading platform.
[0009] Furthermore, the guide mechanism includes a guide rod fixed on the opposite sides of the two connecting blocks, a guide plate is fixed to the end of the guide rod away from the connecting block, a guide cylinder is fixed on the outer peripheral wall of the guide plate, a spring is fixed in the guide cylinder, a guide block is fixed on the side of the guide cylinder away from the guide rod, and a guide groove for the guide block to slide and connect is opened on the inner wall of the box.
[0010] Furthermore, the annular plate and the screen printing mechanism are vertically opposed to each other, the loading plate is located directly below the annular plate, and the loading platform is a hollow truncated table.
[0011] Furthermore, clamping grooves are provided on opposite sides of the two clamping plates, and the PCB board is clamped between the two clamping plates through the clamping grooves. Two sliding holes are provided on the left and right sides of the annular plate, which are respectively located on the front and rear sides of the connecting block and are used for the connecting rod to pass through.
[0012] Furthermore, the tension spring is sleeved on the outer peripheral wall of the connecting rod, one end of the tension spring facing away from the pull plate is fixed to the annular plate, and the dimensions of the plurality of tension springs are the same.
[0013] Furthermore, a movable hole for the guide rod to pass through is provided on the side of the guide cylinder facing the annular plate, and the spring is located on the side of the guide plate away from the guide rod, and the size specifications of the plurality of springs are the same.
[0014] Furthermore, the guide groove is used for allowing the guide block to slide up and down inside the guide groove, and the guide cylinder is used for allowing the guide plate to slide left and right inside the guide cylinder.
[0015] Compared with the prior art, the technical solution of this application has the following beneficial effects:
[0016] 1. When the screen printing device with a positioning mechanism is used, the PCB board is placed inside the annular plate, and the PCB board is automatically clamped by the tension springs provided by the positioning mechanism in cooperation with the clamping plate. The tension springs are provided on the left and right sides of the annular plate. When clamping, since the tension springs on both sides have the same size specifications, the elastic force they generate is also the same, so the PCB board can be pushed to the middle of the annular plate for positioning and clamping, so that it can be better relative to the screen printing mechanism, which is convenient for accurate positioning and printing, ensuring printing quality, better practicality, and more convenient for promotion and use.
[0017] 2. The screen printing device with a positioning mechanism, after the annular plate is positioned and clamped by the positioning mechanism for clamping the PCB board, the annular plate is pushed up by the cylinder. When the annular plate moves up, the stability of the up and down movement of the annular plate can be ensured by the provided guide mechanism. At the same time, the guide mechanism also has a centering positioning function through the provided spring, which further improves the accuracy of positioning printing and avoids the deviation of the printed pattern. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a front cross-sectional schematic diagram of the utility model;
[0019] Figure 2 It is a three-dimensional cross-sectional schematic diagram of the annular plate of the utility model;
[0020] Figure 3 For this utility model Figure 1 A magnified schematic diagram of center A.
[0021] In the figure: 1 box, 2 screen printing mechanism, 3 cylinder, 4 connecting block, 5 annular plate, 601 loading platform, 602 loading plate, 603 clamping plate, 604 connecting rod, 605 pulling plate, 606 tension spring, 607 mounting plate, 608 guide wheel, 701 guide rod, 702 guide plate, 703 guide cylinder, 704 spring, 705 guide block, 706 guide groove. DETAILED DESCRIPTION
[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0023] See also Figure 1In this embodiment, a screen printing device with a positioning mechanism includes a box body 1, and a screen printing mechanism 2 is installed on the inner top wall of the box body 1. It should be noted that the screen printing mechanism 2 is a mature and public technology in the prior art. Therefore, its specific structure and working principle are not described in detail in this article. In addition, the control method of this application is controlled by a controller. The control circuit of the controller can be realized by simple programming by technicians in this field. The provision of power is also common knowledge in this field. In addition, this application is mainly used to protect mechanical devices, so this application no longer explains the control method and circuit connection in detail.
[0024] Two cylinders 3 are fixed on the inner bottom wall of the box body 1, and a connecting block 4 is fixed on the top of the cylinder 3. An annular plate 5 is fixed between the two connecting blocks 4. The annular plate 5 is opposite to the screen printing mechanism 2 in upper and lower directions. A positioning mechanism is provided on the annular plate 5. When in use, the PCB board is placed on the inner side of the annular plate 5, and the PCB board is automatically pushed to the middle of the annular plate 5 by the positioning mechanism for positioning and clamping, so that it is better relative to the screen printing mechanism 2, which is convenient for accurate positioning and printing, ensuring the printing quality, better practicality, and more convenient for promotion and use. A guiding mechanism is provided on the box body 1. After the annular plate 5 is positioned and clamped by the positioning mechanism, the annular plate 5 is pushed up by the cylinder 3. When the annular plate 5 moves up, the stability of the up and down movement of the annular plate 5 can be ensured by the provided guiding mechanism. At the same time, the guiding mechanism also has the function of centering and positioning, which further improves the accuracy of positioning and printing and avoids the deviation of the printed pattern.
[0025] See also Figure 1-3The positioning mechanism includes a loading platform 601 fixed on the inner bottom wall of the box body 1, a loading plate 602 is fixed on the top surface of the loading platform 601, and the loading plate 602 is located directly below the annular plate 5. The loading platform 601 is a hollow cylindrical table, and two clamping plates 603 are slidably connected between the front and rear inner walls of the annular plate 5. A mounting plate 607 is fixed to the bottom surface of the clamping plate 603, and a guide wheel 608 is installed on the side of the mounting plate 607 facing the loading platform 601. When in use, the control cylinder 3 drives the connecting block 4 and the annular plate 5 to move downward. When the guide wheel 608 on the side of the mounting plate 607 abuts against the outer peripheral wall of the loading platform 601, the loading platform 601 will push the two mounting plates 607 to move back to back through the two guide wheels 608. Two connecting rods that penetrate the annular plate 5 and are slidably connected to it are fixed on the opposite sides of the two clamping plates 603. 604, a pull plate 605 is fixed on the side of the connecting rod 604 away from the clamping plate 603, and a tension spring 606 is fixed on the side of the pull plate 605 facing the annular plate 5, and the tension spring 606 is sleeved on the outer peripheral wall of the connecting rod 604, and one end of the tension spring 606 away from the pull plate 605 is fixed to the annular plate 5, and the size specifications of multiple tension springs 606 are the same. Further, the clamping plate 603 pushes the connecting rod 604, so that the connecting rod 604 drives the pull plate 605 to move away from the annular plate 5 and stretch the tension spring 606, and then the PCB board is placed on the top surface of the loading plate 602 and the cylinder 3 is controlled to drive the annular plate 5 to move up, so that the tension spring 606 pulls the two clamping plates 603 to move relative to each other and position to center the PCB board, and further controls the cylinder 3 to drive the annular plate 5 to move up, and then the PCB board contacts the screen printing mechanism 2 for printing.
[0026] Clamping grooves are provided on opposite sides of the two clamping plates 603, and the PCB board is clamped between the two clamping plates 603 through the clamping grooves. Two sliding holes are provided on the left and right sides of the annular plate 5, which are respectively located on the front and rear sides of the connecting block 4 and are used for the connecting rod 604 to pass through.
[0027] See also Figure 1 and Figure 3In this embodiment, the guide mechanism includes a guide rod 701 fixed on the opposite sides of the two connecting blocks 4. A guide plate 702 is fixed to the end of the guide rod 701 away from the connecting block 4. A guide cylinder 703 is fixed on the outer peripheral wall of the guide plate 702. A spring 704 is fixed in the guide cylinder 703. A movable hole for the guide rod 701 to pass through is opened on the side of the guide cylinder 703 facing the annular plate 5. The spring 704 is located on the side of the guide plate 702 away from the guide rod 701. The size specifications of the multiple springs 704 are the same. The guide cylinder 703 is used for the guide plate 702 to slide left and right inside it. When the annular plate 5 moves up and down, The guide plate 702 is pushed horizontally by the spring 704, and the guide plate 702 pushes the guide rod 701 horizontally, so that the guide rods 701 on both sides apply elastic force to each other, thereby playing a centering role on the annular plate 5, keeping it accurately relative to the screen printing mechanism 2, and a guide block 705 is fixed on the side of the guide cylinder 703 away from the guide rod 701, and a guide groove 706 for sliding connection of the guide block 705 is opened on the inner wall of the box body 1, and the guide groove 706 is used for the guide block 705 to slide up and down therein, and the stability of the up and down movement of the annular plate 5 is further improved by the provided guide block 705 and the guide groove 706.
[0028] The working principle of the above embodiment is:
[0029] (1) When in use, the control cylinder 3 drives the connecting block 4 and the annular plate 5 to move downward. When the guide wheel 608 on the side of the mounting plate 607 abuts against the outer peripheral wall of the stage 601, the stage 601 will push the two mounting plates 607 to move away from each other through the two guide wheels 608. The two mounting plates 607 drive the two clamping plates 603 to move away from each other. The clamping plates 603 push the connecting rod 604, so that the connecting rod 604 drives the pulling plate 605 to move away from the annular plate 5 and stretch the tension spring 606. Then, the PCB board is placed on the top surface of the stage 602 and the control cylinder 3 drives the annular plate 5 to move upward, so that the tension spring 606 pulls the two clamping plates 603 to move relatively and position to center the PCB board. The control cylinder 3 further drives the annular plate 5 to move upward. At this time, the PCB board contacts the screen printing mechanism 2 for printing.
[0030] (2) When the annular plate 5 moves up and down, the spring 704 is provided to push the guide plate 702 horizontally, and the guide plate 702 pushes the guide rod 701 horizontally, so that the guide rods 701 on both sides apply elastic forces to each other, thereby playing a centering role on the annular plate 5, keeping it accurately relative to the screen printing mechanism 2, and further improving the stability of the annular plate 5 moving up and down by providing the guide block 705 and the guide groove 706.
[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.
[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A screen printing device with a positioning mechanism, comprising a box (1), a screen printing mechanism (2) being mounted on the inner top wall of the box (1); Features: Two cylinders (3) are fixed on the inner bottom wall of the box body (1), a connecting block (4) is fixed on the top of the cylinder (3), an annular plate (5) is fixed between the two connecting blocks (4), a positioning mechanism is provided on the annular plate (5), and a guiding mechanism is provided on the box body (1); The positioning mechanism comprises a loading platform (601) fixed on the inner bottom wall of the box body (1), a loading plate (602) being fixed on the top surface of the loading platform (601), two clamping plates (603) being slidably connected between the front and rear inner walls of the annular plate (5), two connecting rods (604) penetrating the annular plate (5) and slidably connected thereto being fixed on opposite sides of the two clamping plates (603), a pulling plate (605) being fixed on the side of the connecting rod (604) facing away from the clamping plate (603), a tension spring (606) being fixed on the side of the pulling plate (605) facing the annular plate (5), a mounting plate (607) being fixed on the bottom surface of the clamping plate (603), and a guide wheel (608) being installed on the side of the mounting plate (607) facing the loading platform (601).
2. A screen printing device with a positioning mechanism according to claim 1, characterized in that: The guide mechanism comprises a guide rod (701) fixed on opposite sides of two connecting blocks (4); a guide plate (702) is fixed on one end of the guide rod (701) away from the connecting block (4); a guide cylinder (703) is fixed on the outer peripheral wall of the guide plate (702); a spring (704) is fixed inside the guide cylinder (703); a guide block (705) is fixed on the side of the guide cylinder (703) away from the guide rod (701); and a guide groove (706) for sliding connection of the guide block (705) is provided on the inner wall of the box body (1).
3. A screen printing device with a positioning mechanism according to claim 1, characterized in that: The annular plate (5) and the screen printing mechanism (2) are arranged opposite to each other in upper and lower positions, the object carrier plate (602) is located directly below the annular plate (5), and the object carrier table (601) is a hollow truncated table.
4. A screen printing device with a positioning mechanism according to claim 1, characterized in that: The two clamping plates (603) are provided with clamping grooves on opposite sides thereof, and the PCB board is clamped between the two clamping plates (603) via the clamping grooves. The left and right sides of the annular plate (5) are provided with two sliding holes, which are respectively located at the front and rear sides of the connecting block (4) and are used for the connecting rod (604) to pass through.
5. The screen printing device with a positioning mechanism according to claim 1, characterized in that: The tension spring (606) is sleeved on the outer peripheral wall of the connecting rod (604), and one end of the tension spring (606) facing away from the pull plate (605) is fixed to the annular plate (5), and the size specifications of the plurality of tension springs (606) are the same.
6. A screen printing device with a positioning mechanism according to claim 2, characterized in that: A movable hole for the guide rod (701) to pass through is provided on the side of the guide cylinder (703) facing the annular plate (5); the spring (704) is located on the side of the guide plate (702) away from the guide rod (701); and the size specifications of the plurality of springs (704) are the same.
7. A screen printing device with a positioning mechanism according to claim 2, characterized in that: The guide groove (706) is used for the guide block (705) to slide up and down inside the guide groove, and the guide cylinder (703) is used for the guide plate (702) to slide left and right inside the guide groove.