Positioning device of silk-screen printing plate and silk-screen printing equipment for photovoltaic module

Abstract

The utility model relates to the technical field of silk-screen printing, and discloses a positioning device of a silk-screen printing plate and silk-screen printing equipment for a photovoltaic module. The positioning device comprises an adjusting mechanism and at least two transversely-arranged fixing plates, and the adjusting mechanism is located between the two fixing plates. The adjusting mechanism comprises at least two longitudinally arranged adjusting columns and two moving seats; the two adjusting columns which are distributed at an interval in the front-back direction are installed on the two fixing plates in a front-back moving mode respectively; the outer end of each adjusting column penetrates through the corresponding fixing plate and then extends outwards, and a fastener for limiting the adjusting column to move front and back is detachably installed on the extension portion of each adjusting column. The left side and the right side of the inner end of each adjusting column are each rotationally connected with an adjusting assembly, and the adjusting assemblies on the left side and the right side are rotationally connected to two moving bases distributed left and right in a spaced mode correspondingly. After the fastener is detached, the adjusting columns move back and forth to enable the adjusting assemblies on the left side and the right side to drive the two moving seats to be close to or away from each other, and then clamping and positioning of the silk-screen printing plate are achieved.

Description

Technical Field

[0001] This utility model relates to the field of screen printing technology, specifically to a screen printing stencil positioning device and a screen printing equipment for photovoltaic modules. Background Technology

[0002] In the screen printing of photovoltaic (BC) modules (i.e., back-contact photovoltaic modules), the printing of insulating adhesive and solder paste is a crucial step. The positioning accuracy of the screen printing stencil directly affects the printing precision of the insulating adhesive and solder paste. For example, if the positioning accuracy of the screen printing stencil is insufficient when printing insulating adhesive, it will cause the insulating adhesive to be printed off-center on the grid lines of the photovoltaic cells, leading to short circuits. Similarly, if the positioning accuracy of the screen printing stencil is insufficient when printing solder paste, it will cause the solder paste to be printed off-center on the pads of the photovoltaic cells, resulting in poor solder joints and solder strip misalignment, ultimately affecting the performance of the photovoltaic BC module.

[0003] Existing positioning devices, such as the screen printing positioning and clamping device disclosed in CN217778052U, and the adjustable positioning device for a screen printing machine disclosed in CN219927225U, are specifically designed for clamping and positioning printed materials placed on a printing platform. However, due to differences in applicable scenarios, functional structures, and clamping and positioning requirements between printed materials and screen printing stencils, these existing positioning devices for clamping and positioning printed materials are not suitable for clamping and positioning screen printing stencils. Therefore, there is an urgent need to provide a positioning device specifically designed for clamping and positioning screen printing stencils suitable for screen printing of photovoltaic modules. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a positioning device and a screen printing equipment for photovoltaic modules that are specifically used to clamp and position the screen printing stencil.

[0005] Based on this, the present invention discloses a positioning device for screen printing stencils, including an adjustment mechanism and at least two fixed plates arranged in a horizontal direction, wherein the adjustment mechanism is installed between the two fixed plates; the adjustment mechanism includes at least two adjusting columns arranged in a longitudinal direction and two movable seats; the two adjusting columns are distributed at intervals in front and behind, and the two adjusting columns are respectively installed on the two fixed plates in a movable manner in front and behind.

[0006] Each adjusting column extends outward after passing through a corresponding fixing plate at its outer end. Fasteners for limiting the forward and backward movement of the adjusting column can be detachably installed on the outer extension of each adjusting column. An adjusting component is rotatably connected to the left and right sides of the inner end of each adjusting column. The left and right adjusting components are respectively rotatably connected to two movable seats distributed on the left and right sides. The forward and backward movement of the adjusting column causes the left and right adjusting components to move the two movable seats closer or further apart to clamp and position the screen printing plate.

[0007] Preferably, the number of adjustment components is four, and the four adjustment components are distributed in pairs at intervals. The two adjustment components in front are rotatably connected to the front ends of the two movable seats, while the two adjustment components in the back are rotatably connected to the rear ends of the two movable seats.

[0008] More preferably, each of the adjustment components includes a connecting shaft, an adjustment plate, a connecting seat, and a mounting shaft; one end of the adjustment plate is rotatably connected to the inner end of the adjustment column via the connecting shaft, and the other end of the adjustment plate is rotatably connected to the connecting seat via the mounting shaft, wherein the connecting seat is mounted on the movable seat.

[0009] Preferably, the two fixed plates are symmetrically distributed front and back, the two adjusting columns are also symmetrically distributed front and back, and the two movable seats are symmetrically distributed left and right.

[0010] Preferably, a positioning device for a screen printing stencil further includes at least two positioning plates arranged longitudinally, the two positioning plates being spaced apart from each other on the left and right sides, the front and rear ends of one positioning plate being connected to the left ends of the two fixing plates respectively, and the front and rear ends of the other positioning plate being connected to the right ends of the two fixing plates respectively.

[0011] More preferably, the adjustment mechanism is located between the two positioning plates, and each movable seat is equipped with at least one fine-tuning mechanism to fine-tune the clamping distance; the two fine-tuning mechanisms are respectively detachably installed on the two positioning plates.

[0012] More preferably, each of the fine-tuning mechanisms includes a clamping seat and a limiting post. The inner side of the movable seat is provided with a mounting groove for the clamping seat to be accommodated. The inner end of the limiting post passes through the mounting groove from the outer side of the movable seat and connects to the outer side of the clamping seat. The outer end of the limiting post passes through a corresponding positioning plate and extends outward. The limiting post moves left and right along the positioning plate to change the position of the clamping seat in the mounting groove to fine-tune the clamping distance. The outer extension of the limiting post is detachably equipped with a fixing seat for restricting the left and right movement of the limiting post.

[0013] More preferably, at least two symmetrically arranged limiting posts are installed between the outer side of each clamping seat and the fixing seat.

[0014] More preferably, the two positioning plates are symmetrically distributed left and right, and the two fine-tuning mechanisms are also symmetrically distributed left and right.

[0015] This utility model also discloses a screen printing equipment for photovoltaic modules, which includes a positioning device for a screen printing stencil as described above.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects:

[0017] When using the positioning device of this utility model, first disassemble or loosen the fasteners, then push the adjusting column back and forth along the fixed plate by external force to change the position of the inner end of the adjusting column on the inner side of the fixed plate. This causes the adjusting components on the left and right sides to move the two moving seats closer together or further apart. After adjusting the clamping distance between the two moving seats, install or tighten the fasteners onto the outer extension of the adjusting column to restrict the adjusting column from moving back and forth, thus achieving the positioning and fixing of the adjusting column and fixing the clamping distance between the two moving seats. Therefore, the horizontal clamping purpose of the screen printing screen can be achieved by using the two moving seats that are close together, so as to avoid the screen printing screen from tilting or shaking, thereby improving the printing accuracy and printing effect of the screen printing screen. Moreover, the adjustment of different clamping distances can meet the positioning requirements of screen printing screens of different specifications, which helps to improve the practicality and applicability of the positioning device. This screen printing screen positioning device is particularly suitable for screen printing photovoltaic modules.

[0018] Furthermore, when combined with a fine-tuning mechanism, the clamping distance can be finely adjusted, thereby achieving more precise clamping and positioning of the screen printing stencil, which further enhances the practicality and applicability of the positioning device. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of a screen printing stencil positioning device according to this embodiment.

[0020] Figure 2 This is a top cross-sectional view of a screen printing stencil positioning device according to this embodiment.

[0021] Figure 3 This is a three-dimensional structural diagram of the adjustment mechanism of a screen printing plate positioning device according to this embodiment.

[0022] Figure 4 This is a three-dimensional structural diagram of the fine-tuning mechanism of a screen printing plate positioning device according to this embodiment.

[0023] Reference numerals: Fixed plate 10; Adjustment mechanism 20; Adjustment column 21; Connecting shaft 22; Adjustment plate 23; Mounting shaft 24; Connecting seat 25; Moving seat 26; Mounting groove 261; Fastener 27; Fine-tuning mechanism 30; Clamping seat 31; Limiting column 32; Fixed seat 33; Positioning plate 40. Detailed Implementation

[0024] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] Example

[0026] This embodiment describes a positioning device for a screen printing stencil. See [link to relevant documentation]. Figure 1-3 It includes an adjustment mechanism 20 and at least two fixing plates 10 arranged laterally. For example... Figure 2-3 As shown, two fixed plates 10 are symmetrically distributed front and back, and an adjustment mechanism 20 is installed between the two fixed plates 10. The adjustment mechanism 20 includes at least two adjustment columns 21 and at least two movable seats 26, and the two adjustment columns 21 and the two movable seats 26 are arranged longitudinally; the two adjustment columns 21 are distributed front and back at intervals, preferably symmetrically distributed front and back.

[0027] Furthermore, the two adjusting columns 21 are respectively mounted on the two fixed plates 10 in a forward and backward manner; that is, the adjusting column 21 located in front is mounted on the fixed plate 10 located in front in a forward and backward manner, while the other adjusting column 21 located behind is mounted on the fixed plate 10 located behind in a forward and backward manner. Figure 2 As shown, the outer end of each adjusting post 21 passes through a corresponding fixing plate 10 and extends outward to form an extension. Each extension of the adjusting post 21 is detachably fitted with a fastener 27 to restrict the forward and backward movement of the adjusting post 21. Thus, by removing or loosening the fastener 27, an external force can be applied to push the adjusting post 21 forward and backward along the corresponding fixing plate 10; conversely, by installing or tightening the fastener 27, the forward and backward movement of the adjusting post 21 along the corresponding fixing plate 10 can be restricted.

[0028] Furthermore, each adjusting column 21 has an adjusting component rotatably connected to both sides of its inner end. These adjusting components are rotatably connected to two spaced-apart movable seats 26, respectively. Specifically, the left adjusting component is rotatably connected to the left movable seat 26, and the right adjusting component is rotatably connected to the right movable seat 26. Each adjusting component includes a connecting shaft 22, an adjusting plate 23, a connecting seat 25, and a mounting shaft 24. One end of the adjusting plate 23 is rotatably connected to the inner end of the adjusting column 21 via the connecting shaft 22, while the other end is rotatably connected to the connecting seat 25 via the mounting shaft 24. The connecting seat 25 is mounted on the movable seat 26. Preferably, the two movable seats 26 are symmetrically distributed. In practice, the number of adjusting components is preferably four, with each pair spaced back and forth. The two front adjusting components are rotatably connected to the front ends of the two movable seats 26, and the two rear adjusting components are rotatably connected to the rear ends of the two movable seats 26.

[0029] Therefore, the positioning device of the screen printing stencil in this embodiment can change the position of the inner end of the adjusting column 21 on the inner side of the fixed plate 10 (that is, the side where the two fixed plates 10 are close together) by moving the adjusting column 21 back and forth. Thus, under the rotational cooperation of the connecting shaft 22 and the mounting shaft 24, the included angle between the adjusting column 21 and the adjusting plate 23, and between the adjusting plate 23 and the connecting seat 25, can be changed. Therefore, the adjusting components on the left and right sides can drive the two moving seats 26 to move closer or further apart (that is, the distance between the two moving seats 26 can be adjusted). When the left... When the two movable seats 26 are close together, after adjusting the distance between the two movable seats 26, the fastener 27 is installed or tightened onto the outer extension of the adjusting column 21. This restricts the adjusting column 21 from moving back and forth, thus fixing the adjusting column 21 and fixing the distance between the two movable seats 26. Therefore, the two movable seats 26 close together can be used to clamp the screen printing plate in the horizontal direction, thereby accurately aligning the screen printing plate onto the printing table and effectively improving the printing accuracy and effect of the screen printing plate.

[0030] Moreover, the fastener 27 ensures that the extension of the adjusting column 21 can be stably installed on the outside of the fixed plate 10 (i.e., the side of the two fixed plates 10 facing away from each other). Through the sequential cooperation of the fixed plate 10, adjusting column 21, connecting shaft 22, adjusting plate 23, mounting shaft 24, connecting seat 25 and moving seat 26, the connection stability and installation stability of the entire adjusting mechanism 20 can be ensured.

[0031] See Figure 2 , 4The positioning device for the screen printing stencil in this embodiment further includes at least two positioning plates 40 arranged longitudinally. The two positioning plates 40 are spaced apart from each other, preferably symmetrically distributed from left to right. The front and rear ends of one positioning plate 40 are respectively connected to the left ends of the two fixing plates 10; that is, the front end of the positioning plate 40 on the left is connected to the left end of the fixing plate 10 in front, and the rear end of the positioning plate 40 on the left is connected to the left end of the fixing plate 10 behind. The front and rear ends of the other positioning plate 40 are respectively connected to the right ends of the two fixing plates 10; that is, the front end of the positioning plate 40 on the right is connected to the right end of the fixing plate 10 in front, and the rear end of the positioning plate 40 on the right is connected to the right end of the fixing plate 10 behind. In this way, the two symmetrically distributed positioning plates 40 and the two symmetrically distributed fixing plates 10 together form a closed and structurally stable frame, which helps to improve the installation stability of the adjustment mechanism 20 and the fine-tuning mechanism 30 described below.

[0032] Furthermore, the adjustment mechanism 20 is located between the two positioning plates 40; each movable seat 26 is equipped with at least one fine-tuning mechanism 30 to fine-tune the clamping distance; the two fine-tuning mechanisms 30 are detachably mounted on the two positioning plates 40 respectively. In practice, the two fine-tuning mechanisms 30 are also symmetrically distributed from left to right.

[0033] Specifically, each fine-tuning mechanism 30 includes a clamping seat 31 and a limiting post 32. The inner side of the movable seat 26 (i.e., the side where the two movable seats 26 are close together) has a mounting groove 261 for accommodating the clamping seat 31. The inner end of the limiting post 32 passes through the mounting groove 261 from the outer side of the movable seat 26 (i.e., the side where the two movable seats 26 are opposite to each other) and connects to the outer side of the clamping seat 31. The outer end of the limiting post 32 passes through a corresponding positioning plate 40 and extends outward to form an extension. Under external force, the limiting post 32 can move left and right along the positioning plate 40 to change the position of the clamping seat 31 within the mounting groove 261, thereby changing the clamping distance between the two clamping seats 31 and achieving fine-tuning of the clamping distance. Therefore, by fine-tuning to bring the two clamping seats 31 closer together, the clamping effect on the screen printing plate can be further improved, further enhancing the practicality and applicability of the positioning device.

[0034] Furthermore, a fixing seat 33 for restricting the left and right movement of the limiting post 32 is detachably installed on the outer extension of the limiting post 32. Therefore, before fine-tuning, the fixing seat 33 can be removed to apply external force to push the limiting post 32 to move left and right along a corresponding positioning plate 40, thereby achieving fine-tuning of the clamping distance between the two clamping seats 31; after fine-tuning, the fixing seat 33 can be installed to restrict the left and right movement of the limiting post 32, thereby fixing the clamping distance between the two clamping seats 31 after fine-tuning.

[0035] Preferably, at least two symmetrically arranged limiting posts 32 are installed between the outer side of each clamping seat 31 and the fixing seat 33. Under the action of the fixing seat 33, the outer extension of the limiting post 32 can be stably installed on the outer side of the positioning plate 40, and through the cooperation of the positioning plate 40, the fixing seat 33, the limiting post 32 and the clamping seat 31, the installation stability of the entire fine adjustment mechanism 30 can be ensured.

[0036] In summary, see Figure 1-4 When using this positioning device, first remove or loosen the fastener 27, then push the adjusting column 21 back and forth along the fixed plate 10 by external force to change the position of the inner end of the adjusting column 21 on the inner side of the fixed plate 10. Thus, under the rotational cooperation of the connecting shaft 22 and the mounting shaft 24, the included angle between the adjusting column 21 and the adjusting plate 23, and between the adjusting plate 23 and the connecting seat 25, is changed to adjust the distance between the two moving seats 26. After the adjustment is completed, install or tighten the fastener 27 onto the outer extension of the adjusting column 21 to restrict the adjusting column 21 from moving back and forth. Therefore, the adjusting column 21 can be positioned and fixed to fix the distance between the two moving seats 26. Thus, the horizontal clamping purpose of the screen printing plate can be achieved by the two moving seats 26 that are close to each other, so that the screen printing plate can be accurately aligned with the printing table, effectively improving the printing accuracy and printing effect of the screen printing plate.

[0037] To further improve the clamping effect on the screen printing stencil, the fixing seat 33 is first removed, and then the limiting post 32 is pushed by external force to move left and right along the positioning plate 40 to change the position of the clamping seat 31 in the mounting groove 261. This allows for fine adjustment of the clamping distance between the two clamping seats 31. After fine adjustment, the fixing seat 33 is installed to limit the limiting post 32 from moving left and right, thus fixing the finely adjusted clamping distance between the two clamping seats 31. Therefore, by finely adjusting the two clamping seats 31 to move closer together, the clamping and positioning effect on the screen printing stencil can be further improved, preventing the screen printing stencil from tilting or shaking during the printing process. Furthermore, the adjustment of different clamping distances can meet the positioning requirements of screen printing stencils of different specifications, further improving the practicality and applicability of the positioning device.

[0038] This embodiment provides a screen printing equipment for photovoltaic modules, which includes a positioning device for a screen printing stencil as described above.

[0039] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0040] The technical solution provided by this utility model has been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A positioning device for a screen printing stencil, characterized in that, The device includes an adjustment mechanism and at least two fixed plates arranged laterally, with the adjustment mechanism installed between the two fixed plates; the adjustment mechanism includes at least two adjustment columns and two movable seats arranged longitudinally; the two adjustment columns are spaced apart front to back, and the two adjustment columns are respectively movable back to front to back on the two fixed plates; Each adjusting column extends outward after passing through a corresponding fixing plate at its outer end. Fasteners for limiting the forward and backward movement of the adjusting column can be detachably installed on the outer extension of each adjusting column. An adjusting component is rotatably connected to the left and right sides of the inner end of each adjusting column. The left and right adjusting components are respectively rotatably connected to two movable seats distributed on the left and right sides. The forward and backward movement of the adjusting column causes the left and right adjusting components to move the two movable seats closer or further apart to clamp and position the screen printing plate.

2. The positioning device for a screen printing stencil according to claim 1, characterized in that, The number of adjustment components is four, and the four adjustment components are distributed in pairs, one in front and one behind. The two adjustment components in front are rotatably connected to the front ends of the two movable seats, while the two adjustment components in the back are rotatably connected to the rear ends of the two movable seats.

3. A positioning device for a screen printing stencil according to claim 1 or 2, characterized in that, Each of the adjustment components includes a connecting shaft, an adjustment plate, a connecting seat, and a mounting shaft; one end of the adjustment plate is rotatably connected to the inner end of the adjustment column via the connecting shaft, and the other end of the adjustment plate is rotatably connected to the connecting seat via the mounting shaft, the connecting seat being mounted on the movable seat.

4. The positioning device for a screen printing stencil according to claim 1, characterized in that, The two fixed plates are symmetrically distributed front and back, the two adjusting columns are also symmetrically distributed front and back, and the two movable seats are symmetrically distributed left and right.

5. The positioning device for a screen printing stencil according to claim 1, characterized in that, It also includes at least two positioning plates arranged longitudinally, with the two positioning plates spaced apart on the left and right. The front and rear ends of one positioning plate are respectively connected to the left ends of the two fixing plates, while the front and rear ends of the other positioning plate are respectively connected to the right ends of the two fixing plates.

6. The positioning device for a screen printing stencil according to claim 5, characterized in that, The adjustment mechanism is located between the two positioning plates, and each movable seat is equipped with at least one fine-tuning mechanism to fine-tune the clamping distance; the two fine-tuning mechanisms are detachably installed on the two positioning plates respectively.

7. The positioning device for a screen printing stencil according to claim 6, characterized in that, Each of the aforementioned fine-tuning mechanisms includes a clamping seat and a limiting post. The inner side of the movable seat is provided with a mounting groove for the clamping seat to be accommodated. The inner end of the limiting post passes through the mounting groove from the outer side of the movable seat and connects to the outer side of the clamping seat. The outer end of the limiting post passes through a corresponding positioning plate and extends outward. The limiting post moves left and right along the positioning plate to change the position of the clamping seat in the mounting groove to fine-tune the clamping distance. The outer extension of the limiting post is detachably fitted with a fixing seat for limiting the left and right movement of the limiting post.

8. The positioning device for a screen printing stencil according to claim 7, characterized in that, At least two symmetrically arranged limiting posts are installed between the outer side of each clamping seat and the fixing seat.

9. The positioning device for a screen printing stencil according to claim 6, characterized in that, The two positioning plates are symmetrically distributed from left to right, and the two fine-tuning mechanisms are also symmetrically distributed from left to right.

10. A screen printing device for photovoltaic modules, characterized in that, It includes a positioning device for a screen printing stencil as described in any one of claims 1-9.

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