A screen printing plate production device

CN224828093UActive Publication Date: 2026-10-09SHIJIAZHUANG MINGYUAN TECH
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Patent Information

Application Number
CN202522557802.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-12-02
Publication Date
2026-10-09
Estimated Expiration
2035-12-02

AI Technical Summary

Technical Problem

[0005]本申请实施例提供一种丝网印版生产装置,旨在解决现有技术中操作人员通过切割工具沿着基板粘接区域的外周对丝网进行切割的方式,切割效率低的问题

Benefits of technology

[0016]本申请提供的一种丝网印版生产装置,与现有技术相比,在向基板粘接丝网时,升降台处于低位位置,将若干基板放置在升降台的顶部,并通过第一限位结构进行限位,能够将基板固定在对应位置;然后操作人员向每一个基板的顶部位置涂胶,通过张紧机构张紧丝网,此时丝网位于基板的上方,张紧机构为现有技术,在此不再赘述;通过驱动机构驱动升降台向上滑动,能够使基板的顶部与丝网接触,使得丝网粘接在基板上;在胶凝固之后,通过驱动件向下驱动环形切刀,能够使环形切刀对粘接区域外周部分的丝网进行切割,使得基板上的丝网与整张丝网分离;通过上述过程,无需操作人员沿着粘接区域的外周进行切割,能够提高切割效率,并且能够提高切割后的丝网切面的平整度。

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Abstract

The application provides a silk screen printing plate production device, belonging to the technical field of silk screen printing plate, comprising a lifting platform and a truss; the top of the lifting platform is used for placing a plurality of substrates; the top of the lifting platform is provided with a first limiting structure for limiting the placement position of the substrate; the bottom of the lifting platform is provided with a driving mechanism, the driving mechanism has a lifting driving end for connecting with the bottom of the lifting platform; the truss spans the lifting platform and is in sliding fit with the lifting platform in the horizontal direction; the truss is provided with a driving piece, the driving end of the driving piece is connected with a ring cutter, and the ring cutter can be aligned with the outer periphery of the bonding area of the substrate; wherein the truss and the lifting platform are provided with a height limiting structure; when the lifting platform is in a low position, the ring cutter and the substrate have a space for placing a silk screen; through the above process, the operator does not need to cut along the outer periphery of the bonding area, the cutting efficiency can be improved, and the flatness of the cutting surface of the silk screen can be improved.
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Description

Technical Field

[0001] This application belongs to the field of screen printing plate production technology, specifically relating to a screen printing plate production device. Background Technology

[0002] Screen printing involves placing a screen printing plate at the printing station, setting a printing pattern on the screen printing plate that allows ink to pass through. During screen printing, the ink passes through the printing pattern and lands on the substrate. After the screen printing plate is removed, the printing on the substrate is complete.

[0003] Before screen printing, a screen printing plate needs to be produced. A crucial step in the production of the screen printing plate is attaching the screen to the substrate. The substrate has a frame-like structure with an opening at the bottom and a through-hole in the center of the top. The screen is attached to the top of the substrate, covering the through-hole. Subsequently, photosensitive emulsion is applied to the portion of the screen covering the through-hole. After this, a mask is placed to expose the photosensitive emulsion. Once exposed, the photosensitive emulsion hardens. Finally, the unexposed photosensitive emulsion is cleaned off, thus completing the process of setting the printing pattern on the screen.

[0004] In the existing technology, during the process of bonding the wire mesh to the substrate, several substrates are placed at the bonding station, and then adhesive is applied to each substrate. The wire mesh is then tensioned by a tensioning mechanism, with the wire mesh positioned above the substrate. The substrate is then lifted upwards by a lifting structure, bringing it into contact with the wire mesh, thus bonding the wire mesh to the substrate. After the adhesive solidifies, the operator cuts the wire mesh using a tool, ensuring that each substrate has wire mesh attached, facilitating subsequent production. However, during the cutting process described above, the operator needs to cut along the outer periphery of the substrate bonding area, resulting in low cutting efficiency. Utility Model Content

[0005] This application provides a screen printing plate production apparatus, which aims to solve the problem of low cutting efficiency in the prior art where operators cut the screen along the outer periphery of the substrate bonding area using cutting tools.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows: A screen printing plate production apparatus is provided, comprising: A lifting platform, the top of which is used to place several substrates; the top of the lifting platform has a first limiting structure for limiting the placement position of the substrates; the bottom of the lifting platform is provided with a driving mechanism, the driving mechanism having a lifting driving end for connecting to the bottom of the lifting platform. A truss spans the lifting platform and slides horizontally with the lifting platform; a drive unit is provided on the truss, and a ring cutter is connected to the drive end of the drive unit, which can be aligned with the outer periphery of the substrate bonding area. The truss and the lifting platform have a height limiting structure; when the lifting platform is in a low position, there is a space between the annular cutter and the substrate for placing the wire mesh.

[0007] In one possible implementation, L-shaped limiting plates are provided on both sides of the lifting platform, and the truss includes two columns and a crossbeam connecting the two columns; the two columns correspond one-to-one with the L-shaped limiting plates and are slidably engaged; the driving component is disposed on the crossbeam. One end of the crossbeam is rotatably connected to one of the columns, and the other end of the crossbeam is detachably connected to the other column.

[0008] In one possible implementation, the height limiting structure includes a protruding member connected to the column, and the side of the lifting platform has a groove that slides with the protruding member to limit the column in the height direction.

[0009] In one possible implementation, a support platform is provided on the outside of the rotation axis of the crossbeam, and the support platform is located on the side of the lifting platform. When the lifting platform is in a low position, the crossbeam rotates away from the top of the lifting platform, and the bottom of the annular cutter contacts the top of the support platform.

[0010] In one possible implementation, one of the columns has a T-shaped groove on its outer side arranged along the height direction, a T-shaped slider is slidably arranged in the T-shaped groove, and the L-shaped limiting plate extends out of the outer side of the T-shaped slider; The L-shaped limiting plate has a slide rail at each cutting position of the substrate, and the outer wall of the extension of the T-shaped slider contacts the side wall of the slide rail to position the sliding position of the column.

[0011] In one possible implementation, a lifting plate is connected to the top of the annular cutter, a guide rod is connected to the top of the lifting plate, and the crossbeam has a through hole that slides with the guide rod.

[0012] In one possible implementation, the end of the crossbeam away from the rotation axis has a threaded hole, and a baffle is fixedly provided on another column. The baffle contacts the crossbeam at the position of the threaded hole to limit the crossbeam; wherein, the baffle has a through hole, and the baffle is fixed to the crossbeam by bolts.

[0013] In one possible implementation, the drive mechanism includes several support seats and several drive cylinders; the bottom of the support seats is fixed to the ground, and the top of the support seats contacts the bottom of the lifting platform to support the lifting platform when it is in a low position. The ground has a mounting slot for placing the drive cylinder, and the cylinder body of the drive cylinder is installed in the mounting slot; the piston rod end of the drive cylinder is connected to the bottom of the lifting platform to lift the lifting platform.

[0014] In one possible implementation, the top of the support base has a guide groove, and the bottom of the lifting platform is fixedly provided with a guide column that slides in cooperation with the guide groove.

[0015] In one possible implementation, the first limiting structure includes several sets of positioning blocks, each set of positioning blocks having at least two blocks, and the two positioning blocks respectively contacting two right-angle positions on the inner peripheral wall of the substrate to position each substrate.

[0016] This application provides a screen printing plate production apparatus. Compared with the prior art, when bonding the screen to the substrate, the lifting platform is in a low position, and several substrates are placed on top of the lifting platform and limited by a first limiting structure to fix the substrates in the corresponding positions. Then, the operator applies adhesive to the top of each substrate and tensions the screen using a tensioning mechanism. At this time, the screen is above the substrate. The tensioning mechanism is prior art and will not be described in detail here. The lifting platform is driven upward by a drive mechanism, which allows the top of the substrate to contact the screen, thus bonding the screen to the substrate. After the adhesive solidifies, a drive member drives a ring cutter downward, which cuts the screen on the outer periphery of the bonding area, separating the screen on the substrate from the entire screen. Through the above process, the operator does not need to cut along the outer periphery of the bonding area, which improves cutting efficiency and the flatness of the cut surface of the screen. Attached Figure Description

[0017] Figure 1 A schematic diagram of a screen printing plate production apparatus provided in this application embodiment; Figure 2 for Figure 1 Enlarged diagram of section A in the middle; Figure 3 for Figure 1 Enlarged diagram of section B in the middle; Figure 4 A schematic diagram of the truss portion of a screen printing plate production apparatus provided in an embodiment of this application; Figure 5 A schematic diagram of the column portion of a screen printing plate production apparatus provided in an embodiment of this application; Figure 6 A schematic diagram of the crossbeam and column portion of a screen printing plate production device provided in an embodiment of this application; Figure 7 A schematic diagram of the rotating shaft portion of a screen printing plate production apparatus provided in an embodiment of this application; Figure 8 A schematic diagram of the lifting platform portion of a screen printing plate production apparatus provided in an embodiment of this application; Figure 9 A schematic diagram of a screen printing plate production apparatus with the screen bonded to a substrate, provided for an embodiment of this application; Figure 10 A schematic diagram of the lifting plate portion of a screen printing plate production device provided in an embodiment of this application; Figure 11 A schematic diagram of the initial state of a screen printing plate production apparatus provided in an embodiment of this application; Figure 12 The substrate of a screen printing plate production apparatus provided in this application is slid upward to a position in contact with the screen. Figure 13 A schematic diagram showing a crossbeam of a screen printing plate production device fixed to another column, provided in an embodiment of this application; Figure 14 This is a schematic diagram of a screen printing plate production device provided in this application, showing a ring cutter cutting a screen.

[0018] Explanation of reference numerals in the attached drawings: 1. Lifting platform; 11. L-shaped limiting plate; 12. Support platform; 13. Slide groove; 14. Slide track; 15. Guide column; 2. Truss; 21. Column; 211. T-shaped groove; 22. Crossbeam; 23. Protruding component; 24. T-shaped slider; 25. Baffle; 26. Rotating shaft; 261. Annular groove; 27. Connecting plate; 3. Base plate; 4. Drive mechanism; 41. Support seat; 5. Drive component; 6. Annular cutter; 61. Lifting plate; 62. Guide rod; 7. Wire mesh; 8. Positioning block. Detailed Implementation

[0019] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0020] Please refer to the following: Figures 1 to 14This application describes a screen printing plate production apparatus. The apparatus includes a lifting platform 1 and a truss 2. The top of the lifting platform 1 is used to place several substrates 3. The top of the lifting platform 1 has a first limiting structure for limiting the placement position of the substrates 3. The bottom of the lifting platform 1 is provided with a driving mechanism 4, which has a lifting drive end for connecting to the bottom of the lifting platform 1. The truss 2 spans the lifting platform 1 and slides horizontally with it. The truss 2 is provided with a driving member 5, the driving end of which is connected to a ring cutter 6, which can be aligned with the outer periphery of the bonding area of ​​the substrate 3. A height limiting structure is provided between the truss 2 and the lifting platform 1. When the lifting platform 1 is in a low position, there is space between the ring cutter 6 and the substrate 3 for placing the screen printing plate 7.

[0021] This application provides a screen printing plate production apparatus. Compared with the prior art, when bonding the screen 7 to the substrate 3, the lifting platform 1 is in a low position, and several substrates 3 are placed on the top of the lifting platform 1 and limited by the first limiting structure, which can fix the substrates 3 in the corresponding positions. Then, the operator applies glue to the top of each substrate 3 and tensions the screen 7 by the tensioning mechanism. At this time, the screen 7 is located above the substrate 3. The lifting platform 1 is driven upward by the driving mechanism 4, which can make the top of the substrate 3 contact the screen 7, so that the screen 7 is bonded to the substrate 3. After the glue solidifies, the annular cutter 6 is driven downward by the driving member 5, which can cut the screen 7 on the outer periphery of the bonding area, so that the screen 7 on the substrate 3 is separated from the whole screen 7. Through the above process, the operator does not need to cut along the outer periphery of the bonding area, which can improve the cutting efficiency and improve the flatness of the cut surface of the screen 7.

[0022] For example, a lifting plate 61 is fixedly installed on the top of the annular cutter 6, and the driving component 5 is a driving cylinder. The cylinder body of the driving cylinder is fixed on the top of the truss 2. The piston rod of the driving cylinder passes through the truss 2 and is fixed together with the lifting plate 61. By lifting and lowering the piston rod of the driving cylinder, the annular cutter 6 can be driven to lift and lower, thereby cutting the wire mesh 7 on the substrate 3. The driving component 5 can also be a hydraulic cylinder or an electric push rod.

[0023] In some embodiments, such as Figures 1 to 14 As shown, both sides of the lifting platform 1 are provided with L-shaped limiting plates 11. The truss 2 includes two columns 21 and a crossbeam 22 connecting the two columns 21. The two columns 21 correspond one-to-one with the L-shaped limiting plates 11 and are slidably engaged. The driving component 5 is set on the crossbeam 22. One end of the crossbeam 22 is rotatably engaged with one of the columns 21, and the other end of the crossbeam 22 is detachably connected to the other column 21.

[0024] It should be noted that a sliding area is formed between the L-shaped limiting plate 11 and the side of the lifting platform 1, and the two columns 21 are respectively located in the corresponding sliding area; one side of the column 21 contacts the side of the lifting platform 1, and the other side of the column 21 contacts the side of the L-shaped limiting plate 11. Through the cooperation between the L-shaped limiting plate 11 and the side of the lifting platform 1, the column 21 can be laterally limited, ensuring the stability of the column 21 during the sliding process.

[0025] By rotating the crossbeam 22 and the column 21, the crossbeam 22 can be rotated away from the upper area of ​​the lifting platform 1 before bonding; when tensioning the wire mesh 7 later, the wire mesh 7 can be suspended above the substrate 3, and the wire mesh 7 does not need to pass under the crossbeam 22, thus improving the convenience of the wire mesh 7 during the tensioning process.

[0026] After the crossbeam 22 is rotated away from the lifting platform 1, only one of the columns 21 provides support for the crossbeam 22. In order to improve the stability of the crossbeam 22 after it is rotated away, a support platform 12 is provided on one side of the lifting platform 1. The support platform 12 is located on one side of the rotation axis 26 of the crossbeam 22. Therefore, after the crossbeam 22 is rotated away from the lifting platform 1, it can rotate to the top of the support platform 12. The bottom of the annular cutter 6 can contact the top of the support platform 12. Therefore, the support platform 12 can provide support for the annular cutter 6.

[0027] After the wire mesh 7 is tensioned, the lifting platform 1 slides upward, causing the substrate 3 to contact the wire mesh 7. After the adhesive solidifies, the wire mesh 7 adheres to the substrate 3. During the upward sliding of the lifting platform 1, the crossbeam 22 and the column 21 slide upward together. After the adhesive solidifies, the crossbeam 22 is rotated above the lifting platform 1, and the other end of the crossbeam 22 is fixed to another column 21. Then, the annular cutter 6 is driven downward by the driving component 5, which enables the annular cutter 6 to cut the wire mesh 7 on the substrate 3. The wire mesh 7 in the bonding area on the substrate 3 can be separated from the tensioned wire mesh 7.

[0028] The rotation of the crossbeam 22 and the column 21 is as follows: the column 21 has a through hole, and the rotating shaft 26 on the crossbeam 22 passes through the through hole on the column 21; the through end of the rotating shaft 26 has an annular groove 261, and two connecting plates 27 are inserted and fitted at the position of the rotating shaft 26 in the annular groove 261. Each connecting plate 27 is a semi-circular structure. A part of the connecting plate 27 is inserted and fitted with the annular groove 261, and the other part of the connecting plate 27 is located outside the annular groove 261. The part of the connecting plate 27 located outside the annular groove 261 is fixed to the column 21 by bolts; the bottom of the connecting plate 27 contacts the bottom of the annular groove 261, which can provide a height limit for the rotating shaft 26 and prevent the crossbeam 22 from moving in the height direction.

[0029] In some embodiments, such as Figures 1 to 14As shown, the height limiting structure includes a protruding part 23 connected to the column 21, and the side of the lifting platform 1 has a sliding groove 13 that slides with the protruding part 23 to limit the column 21 in the height direction.

[0030] The slide 13 connects to the end of the lifting platform 1, so the column 21 can slide out of the lifting platform 1, which is convenient for maintenance or replacement of the column 21; the column 21 slides in the slide 13 through the protruding part 23, which can play a height limiting role for the column 21 and prevent the column 21 from moving in the height direction.

[0031] In some embodiments, such as Figures 1 to 14 As shown, one of the columns 21 has a T-shaped groove 211 on its outer side along the height direction. A T-shaped slider 24 is slidably disposed in the T-shaped groove 211. An L-shaped limiting plate 11 extends from the outer side of the T-shaped slider 24. The L-shaped limiting plate 11 has a slide rail 14 at each cutting position of the substrate 3. The outer wall of the extended portion of the T-shaped slider 24 contacts the side wall of the slide rail 13 to position the sliding position of the column 21.

[0032] As the column 21 slides along the side of the lifting platform 1, the operator holds the extension of the T-shaped slider 24. After the column 21 slides to the designated position, the extension of the T-shaped slider 24 slides down into the slide rail 14, and the extension of the T-shaped slider 24 contacts the side wall of the slide rail 14, which can restrict the sliding of the column 21 and thus stabilize the column 21 in the position after sliding.

[0033] In some embodiments, such as Figures 1 to 14 As shown, the top of the lifting plate 61 is connected to a guide rod 62, and the crossbeam 22 has a through hole that slides with the guide rod 62.

[0034] For example, there are two guide rods 62 on the lifting plate 61. The lifting plate 61 slides with the crossbeam 22 through the two guide rods 62, which can improve the stability of the lifting plate 61 during the lifting process.

[0035] In some embodiments, such as Figures 1 to 14 As shown, the end of the crossbeam 22 away from the rotating shaft 26 has a threaded hole, and a baffle 25 is fixed on another column 21. The baffle 25 contacts the crossbeam 22 at the position of the threaded hole to limit the crossbeam 22. The baffle 25 has a through hole and is fixed to the crossbeam 22 by bolts.

[0036] It should be noted that when the crossbeam 22 rotates to the top of the lifting platform 1, the threaded hole on the crossbeam 22 aligns with the through hole on the baffle 25, and then the other end of the crossbeam 22 is fixed to the baffle 25 by bolts; when the crossbeam 22 rotates to the position of the baffle 25, the top of the column 21 contacts the bottom of the crossbeam 22, and the column 21 can provide support for the crossbeam 22.

[0037] In addition, the through hole on the baffle 25 can also be provided with internal threads. After the threaded end of the bolt is separated from the threaded hole on the crossbeam 22, the bolt can be located on the baffle 25, reducing the loss of the bolt.

[0038] In some embodiments, such as Figures 1 to 14 As shown, the drive mechanism 4 includes several support seats 41 and several drive cylinders; the bottom of the support seat 41 is fixed to the ground, and the top of the support seat 41 contacts the bottom of the lifting platform 1 to support the lifting platform 1 when it is in a low position; wherein, there is a mounting groove on the ground for placing the drive cylinder, and the cylinder body of the drive cylinder is installed in the mounting groove; the piston rod end of the drive cylinder is connected to the bottom of the lifting platform 1 to lift the lifting platform 1.

[0039] The lifting platform 1 is driven to rise by the driving cylinder; when the piston rod of the driving cylinder descends, the lifting platform 1 can move downward; when it slides down to the position of the support seat 41, the lifting platform 1 is in the low position.

[0040] The support base 41 is fixed to the ground with anchor bolts. By setting an installation groove on the ground, the drive cylinder can be installed in the installation groove, thereby reducing the overall height.

[0041] To improve the stability of the lifting platform 1 during the lifting process, a guide groove is provided on the top of the support base 41, and a guide column 15 that slides with the guide groove is fixed at the bottom of the lifting platform 1. During the lifting process, the guide column 15 slides with the guide groove to play a guiding role and improve the stability of the lifting platform 1 during the lifting process.

[0042] In some embodiments, such as Figures 1 to 14 As shown, the first limiting structure includes several sets of positioning blocks 8, each set of positioning blocks 8 consists of four blocks, and the four positioning blocks 8 respectively contact the right-angle position of the inner peripheral wall of the substrate 3 to position each substrate 3.

[0043] By setting several sets of positioning blocks 8 on the top of the lifting platform 1, the placement position of each substrate 3 can be positioned; each set of positioning blocks 8 consists of four blocks. After the substrate 3 is placed on the lifting platform 1, the substrate 3 is upside down on the lifting platform 1, and the four corners of the inner peripheral wall of the substrate 3 contact the corresponding positioning blocks 8, which can restrict the sliding of the substrate 3 on the horizontal plane.

[0044] For example, each set of positioning blocks 8 can also be two, with the two positioning blocks 8 arranged along the inclined side of the substrate 3; that is, after the substrate 3 is upside down on the lifting platform 1, the positioning blocks 8 contact the two corners of the inclined side of the substrate 3, which can limit the substrate 3 on the horizontal plane, thereby restricting the sliding of the substrate 3 on the horizontal plane.

[0045] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A screen printing plate production device, characterized in that, include: A lifting platform, the top of which is used to place several substrates; the top of the lifting platform has a first limiting structure for limiting the placement position of the substrates; the bottom of the lifting platform is provided with a driving mechanism, the driving mechanism having a lifting driving end for connecting to the bottom of the lifting platform. A truss spans the lifting platform and slides horizontally with the lifting platform; a drive unit is provided on the truss, and a ring cutter is connected to the drive end of the drive unit, which can be aligned with the outer periphery of the substrate bonding area. The truss and the lifting platform have a height limiting structure; when the lifting platform is in a low position, there is a space between the annular cutter and the substrate for placing the wire mesh.

2. The screen printing plate production apparatus as described in claim 1, characterized in that, Both sides of the lifting platform are provided with L-shaped limiting plates. The truss includes two columns and a crossbeam connecting the two columns. The two columns correspond one-to-one with the L-shaped limiting plates and are slidably engaged. The driving component is set on the crossbeam. One end of the crossbeam is rotatably connected to one of the columns, and the other end of the crossbeam is detachably connected to the other column.

3. The screen printing plate production apparatus as described in claim 2, characterized in that, The height limiting structure includes a protruding component connected to the column, and the side of the lifting platform has a sliding groove that slides with the protruding component to limit the column in the height direction.

4. The screen printing plate production apparatus as described in claim 2, characterized in that, The crossbeam is provided with a support platform on the outside of the rotation axis, and the support platform is located on the side of the lifting platform. When the lifting platform is in a low position, the crossbeam rotates away from the top of the lifting platform, and the bottom of the annular cutter contacts the top of the support platform.

5. The screen printing plate production apparatus as described in claim 2, characterized in that, One of the columns has a T-shaped groove on its outer side along the height direction, a T-shaped slider is slidably disposed in the T-shaped groove, and the L-shaped limiting plate extends out of the outer side of the T-shaped slider; The L-shaped limiting plate has a slide rail at each cutting position of the substrate, and the outer wall of the extension of the T-shaped slider contacts the side wall of the slide rail to position the sliding position of the column.

6. The screen printing plate production apparatus as described in claim 2, characterized in that, The top of the annular cutter is connected to a lifting plate, the top of the lifting plate is connected to a guide rod, and the crossbeam has a through hole that slides with the guide rod.

7. The screen printing plate production apparatus as described in claim 2, characterized in that, The crossbeam has a threaded hole at one end away from the rotation axis, and a baffle is fixed on the other column. The baffle contacts the crossbeam at the position of the threaded hole to limit the crossbeam. The baffle has a through hole and is fixed to the crossbeam by bolts.

8. The screen printing plate production apparatus as described in claim 1, characterized in that, The drive mechanism includes several support seats and several drive cylinders; the bottom of the support seat is fixed to the ground, and the top of the support seat contacts the bottom of the lifting platform to support the lifting platform when it is in a low position. The ground has a mounting slot for placing the drive cylinder, and the cylinder body of the drive cylinder is installed in the mounting slot; the piston rod end of the drive cylinder is connected to the bottom of the lifting platform to lift the lifting platform.

9. The screen printing plate production apparatus as described in claim 8, characterized in that, The top of the support base has a guide groove, and the bottom of the lifting platform is fixedly provided with a guide column that slides in cooperation with the guide groove.

10. A screen printing plate production apparatus as described in claim 1, characterized in that, The first limiting structure includes several sets of positioning blocks, each set of four positioning blocks. The four positioning blocks are respectively in contact with the right-angle position of the inner peripheral wall of the substrate to position each substrate.