Shell surface silk screen plate

Abstract

The utility model relates to the field of silk-screen printing, and particularly discloses a shell surface silk-screen printing screen plate which comprises a workbench, the top of the workbench is fixedly connected with two sets of fixing seats, the tops of the two sets of fixing seats are fixedly connected with guide rods, the exteriors of the two sets of guide rods are slidably connected with guide rails, and the guide rails are fixedly connected with a second positioning block through limiting of the second positioning block. When the screen plate body is separated from the screen plate body, an extrusion block is extruded towards the interior of a mounting groove, at the moment, the ink return plate is downwards extruded by the side wall of a trapezoidal groove and moves to the top of the ink scraping plate, and at the moment, the ink scraping plate is upwards reset under the action of an elastic piece so as to be separated from the screen plate body. The ink return plate can be driven to move downwards and drive the ink scraping plate to move upwards, at the moment, the ink return plate can make good contact with the screen body, ink on the screen body is recycled in the follow-up moving process, the ink return plate does not need to be rotated for switching use, and normal operation of printing work is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of screen printing, in particular to a screen printing screen plate for a shell surface. Background Art

[0002] Screen printing is a process of printing based on the basic principle that the mesh holes of the graphic part of the screen printing plate are permeable to ink, while the mesh holes of the non-graphic part are not permeable to ink. When printing, ink is poured into one end of the screen printing plate, and a certain pressure is applied to the ink part of the screen printing plate with a scraper, while the screen printing plate is moved at a constant speed toward the other end. During the movement, the ink is squeezed from the mesh holes of the graphic part onto the substrate by the scraper. It is often used for printing on the surface of shells.

[0003] For example, a Chinese patent with the publication number CN212147906U discloses a screen printing plate body printer, including a workbench, a screen plate body, a lifting device, a horizontal moving device and an ink scraping device, the lifting device is arranged above the workbench, the horizontal moving device is slidably connected to the lifting device, the two ends of the screen plate body are arranged below the horizontal moving device through fixed rods, the ink scraping device is slidably connected to the horizontal moving device, the ink scraping device includes a sliding block, a rotating motor, an ink scraping knife and an ink return knife, the sliding block is slidably connected along the horizontal moving device, the rotating motor is fixed on the sliding block, the output shaft of the rotating motor faces away from the side of the horizontal moving device, the ink scraping knife and the ink return knife are fixedly connected to the output shaft of the rotating motor, and the ink scraping knife and the ink return knife are arranged at an angle around the output shaft of the rotating motor. The utility model provides a screen printing plate body printer, which only uses a set of driving mechanisms to drive the ink scraping knife and the ink return knife for switching, thereby avoiding repeated height calibration of the ink scraping knife and the ink return knife.

[0004] Although the scraper blade and the ink return blade can be switched for use under the action of the rotating motor, if the printed pattern is large, when the scraper blade completes a scraping operation, the distance between the scraper blade and the inner wall of the screen body is small, and the ink return blade is located above the fixed rod. When the rotating motor rotates, the ink return blade will be blocked by the fixed rod, making it unable to rotate, resulting in the inability to switch between the scraper blade and the ink return blade, affecting the normal printing operation. Utility Model Content

[0005] The purpose of the utility model is to provide a housing surface screen printing screen to solve the following technical problems:

[0006] How to ensure that when the distance between the scraper and the inner wall of the screen body is small, the ink return knife can still be switched for use.

[0007] The purpose of the utility model can be achieved through the following technical solutions:

[0008] A screen printing screen for a shell surface, comprising a workbench, wherein two groups of fixing seats are fixedly connected to the top of the workbench, guide rods are fixedly connected to the tops of the two groups of fixing seats, and guide rails are slidably connected to the outsides of the two groups of guide rods;

[0009] The top of the guide rail is fixedly provided with a first positioning block at one end of the guide rail and located at one end of the driving member, and the second positioning block is slidably connected to the second positioning block at one end of the inner wall of the top of the guide rail, and the bottom of the guide rail is fixedly connected to the connecting plate, and the connecting plate is provided with a mesh plate body at one side of the connecting plate away from the guide rod.

[0010] Furthermore, the elastic member includes multiple groups of springs fixedly connected to the top of the ink scraper plate and the ink return plate, the top of the spring is fixedly connected to the inner wall of the top of the mounting groove, and the ink scraper plate and the ink return plate are both adapted to the size of the movable groove.

[0011] Furthermore, two groups of limit grooves are opened in the slide groove, and the two groups of limit grooves are symmetrically arranged relative to the extrusion block. The outer wall of the extrusion block is fixedly connected with two groups of limit blocks, and the limit blocks are slidably installed in the limit grooves. The limit blocks are adapted to the size of the limit grooves.

[0012] Furthermore, a connection groove is provided at the top of one end of the guide rail away from the first positioning block, a bolt is slidably installed in the connection groove, the second positioning block is threadedly connected to the bottom of the bolt, and the second positioning block is fitted with the side wall of the guide rail.

[0013] Furthermore, a rectangular groove is provided on the outer wall of the connecting plate away from the guide rod, a screw is rotatably connected in the rectangular groove, the mesh plate body is threadedly connected to the outside of the screw, a knob is rotatably connected to the bottom of the connecting plate, and the knob is fixedly connected to the end of the screw.

[0014] Furthermore, the driving member includes a cylinder fixedly connected to one end of the guide rail, the cylinder is located on one side of the first positioning block, and the cylinder output shaft is fixedly connected to the mounting block.

[0015] Furthermore, a connecting rod is slidably connected between the two groups of guide rods, the outer wall of the connecting rod is fixedly connected to the outer surface of the guide rail, a hydraulic cylinder is fixedly connected to the top of the workbench, and the output shaft of the hydraulic cylinder is fixedly connected to the lower surface of the connecting rod.

[0016] Beneficial effects of the utility model:

[0017] (1) The utility model squeezes the extrusion block into the installation groove under the limitation of the second positioning block. At this time, the side wall of the trapezoidal groove squeezes the ink return plate downward and moves it to the top of the ink scraper plate. At this time, the ink scraper plate will reset upward under the action of the elastic member, thereby separating from the screen body. Through such a setting, after a printing is completed, the extrusion block is squeezed by the first positioning block, which can drive the ink return plate to move downward and the ink scraper plate to move upward. At this time, the ink return plate can have good contact with the screen body and recover the ink on the screen body during the subsequent movement. There is no need to switch the use of the ink return plate by rotating it, thereby ensuring the normal progress of the printing operation.

[0018] (2) The utility model squeezes the extrusion block toward the second positioning block under the limitation of the first positioning block. At this time, the trapezoidal groove in the extrusion block will move again to above the ink return plate. At this time, the ink return plate will move upward under the action of the elastic member. In this process, the side wall of the trapezoidal groove will squeeze the ink scraper plate downward so that its bottom will fit with the bottom inner wall of the screen body again, thereby ensuring the normal progress of subsequent printing operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described below in conjunction with the accompanying drawings.

[0020] Figure 1 It is a three-dimensional diagram of the utility model;

[0021] Figure 2 It is a cross-sectional view of the mounting block in the utility model;

[0022] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0023] Figure 4 It is a cross-sectional view of the guide rail in the utility model;

[0024] Figure 5 yes Figure 4 Enlarged view of point B in the middle;

[0025] Figure 6 It is a partial structural diagram of the utility model.

[0026] Figure numerals: 1. workbench; 2. fixed seat; 21. guide rod; 22. hydraulic cylinder; 23. connecting rod; 3. guide rail; 31. cylinder; 32. mounting block; 33. mounting groove; 34. ink scraper plate; 35. ink return plate; 36. bump; 37. spring; 38. movable groove; 4. extrusion block; 41. trapezoidal groove; 42. limit block; 43. slide groove; 5. first positioning block; 51. connecting groove; 52. bolt; 53. second positioning block; 6. connecting plate; 61. rectangular groove; 62. screw; 63. mesh body; 64. knob. DETAILED DESCRIPTION

[0027] 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 of 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.

[0028] A screen printing screen for the shell surface in the embodiment of the utility model, please refer to the attached drawing Figure 1-Figure 6 As shown, it comprises a workbench 1, the top of the workbench 1 is fixedly connected with two sets of fixed seats 2, the tops of the two sets of fixed seats 2 are fixedly connected with guide rods 21, and the outsides of the two sets of guide rods 21 are slidably connected with guide rails 3;

[0029] One end of the guide rail 3 is fixedly connected to a mounting block 32 through a driving member, a mounting groove 33 is provided in the mounting block 32, a slide groove 43 is provided at the center of the inner wall at the top of the mounting groove 33, both sides of the slide groove 43 penetrate the mounting block 32, an extrusion block 4 is slidably connected in the slide groove 43, a trapezoidal groove 41 is provided at the bottom of the extrusion block 4, an ink scraping plate 34 and an ink return plate 35 are fixedly connected in the mounting groove 33 through an elastic member, the ink return plate 35 is the same size as the ink scraping plate 34, and the outer wall of the mounting groove 33 on one side away from the guide rod 21 Two groups of movable grooves 38 are provided, and the ink scraper plate 34 and the ink return plate 35 are respectively located in the two groups of movable grooves 38. The ink scraper plate 34 is arranged close to the driving member, and the tops of the ink scraper plate 34 and the ink return plate 35 are fixedly connected with a protrusion 36. The top inner wall of the guide rail 3 and the side of the driving member are fixedly connected with a first positioning block 5, and the end of the top inner wall of the guide rail 3 away from the first positioning block 5 is slidably connected with a second positioning block 53, and the bottom of the guide rail 3 is fixedly connected with a connecting plate 6, and the side of the connecting plate 6 away from the guide rod 21 is provided with a screen body 63;

[0030] In the initial state, the convex block 36 on the top of the ink return plate 35 is located in the trapezoidal groove 41, and the elastic member on the top of the ink return plate 35 is only affected by the gravity of the ink return plate 35, the convex block 36 on the top of the ink scraper plate 34 is located at the bottom of the extrusion block 4, and the elastic member on the top of the ink scraper plate 34 is in a stretched state. At this time, the horizontal position of the ink return plate 35 is higher than the ink scraper plate 34, and the bottom of the ink scraper plate 34 is in contact with the bottom of one end of the screen body 63. When performing screen printing, the mounting block 32 is first driven by the driving member to move to the other end of the guide rail 3. At this time, the ink scraper plate 34 will apply a certain pressure to the ink portion on the screen body 63, and move at a uniform speed toward the other end of the screen body 63;

[0031] When the ink scraper 34 moves to the other end of the screen body 63, the extrusion block 4 will contact the second positioning block 53. As the mounting block 32 continues to move, the extrusion block 4 will be squeezed into the mounting groove 33 under the limiting action of the second positioning block 53. During the movement of the extrusion block 4, the side wall of the trapezoidal groove 41 inside the extrusion block 4 will squeeze the ink return plate 35 downward until it contacts the upper surface of the screen body 63 and stretches the elastic member. As the extrusion block 4 moves, when the ink return plate 35 contacts the upper surface of the screen body 63, the trapezoidal groove 41 moves. When the ink scraper 34 reaches the top, the ink scraper 34 will be reset upward under the action of the elastic member, thereby being separated from the screen body 63. By such a configuration, after one printing is completed, the first positioning block 5 squeezes the squeezing block 4, which can drive the ink return plate 35 to move downward and drive the ink scraper 34 to move upward. At this time, the ink return plate 35 can have good contact with the screen body 63, and recover the ink on the screen body 63 during the subsequent movement. There is no need to switch the use of the ink return plate 35 by rotating it, thereby ensuring the normal progress of the printing operation.

[0032] When the ink return plate 35 contacts the upper surface of the screen body 63, the mounting block 32 is driven to move to the initial position by the driving member. In the process of returning to the initial position, the extrusion block 4 contacts the first positioning block 5. At this time, under the limit of the first positioning block 5, the extrusion block 4 will be squeezed toward the second positioning block 53. At this time, the trapezoidal groove 41 in the extrusion block 4 will move back to the top of the ink return plate 35. At this time, the ink return plate 35 will move upward under the action of the elastic member, and in this process, the side wall of the trapezoidal groove 41 will squeeze the ink scraper plate 34 downward, so that its bottom will fit with the bottom inner wall of the screen body 63 again, to ensure the normal progress of subsequent printing operations.

[0033] As an implementation method of the utility model, please refer to the accompanying drawings Figure 4 , Figure 5 As shown, specifically, the elastic member includes a plurality of groups of springs 37 fixedly connected to the top of the ink scraper plate 34 and the ink return plate 35, the top of the spring 37 is fixedly connected to the inner wall of the top of the mounting groove 33, and the ink scraper plate 34 and the ink return plate 35 are both adapted to the size of the movable groove 38;

[0034] Through the elastic force of the spring 37 and the cooperation of the trapezoidal groove 41, the ink scraper plate 34 and the ink return plate 35 can be switched, and there is no need to rotate the ink return plate 35. It is convenient and fast, and is not affected by the position of the ink scraper plate 34, ensuring the normal progress of the printing operation. In addition, since the ink scraper plate 34 and the ink return plate 35 are both adapted to the size of the movable groove 38, the ink scraper plate 34 and the ink return plate 35 will not tilt during the movement, thereby ensuring that the ink scraper plate 34 and the ink return plate 35 have a good contact effect with the surface of the screen body 63, further improving the ink scraping effect and ink recovery efficiency.

[0035] As an implementation method of the utility model, please refer to the accompanying drawings Figure 5 As shown, specifically, two groups of limit grooves are opened in the slide groove 43, and the two groups of limit grooves are symmetrically arranged relative to the extrusion block 4. Two groups of limit blocks 42 are fixedly connected to the outer wall of the extrusion block 4, and the limit blocks 42 are slidably installed in the limit grooves. The limit blocks 42 are adapted to the size of the limit grooves;

[0036] When the extrusion block 4 moves, it will drive the limit block 42 to move in the limit groove. The limit block 42 can limit the extrusion block 4 to prevent the extrusion block 4 from tilting during the movement, resulting in a failure to have a good extrusion effect on the scraper plate 34 and the ink return plate 35, thereby ensuring that the scraper plate 34 and the ink return plate 35 can have a good contact effect with the upper surface of the screen body 63, thereby improving the ink scraping effect.

[0037] As an implementation method of the utility model, please refer to the accompanying drawings Figure 2 , Figure 4 As shown, specifically, a connecting groove 51 is provided at the top of the guide rail 3 away from the end of the first positioning block 5, a bolt 52 is slidably installed in the connecting groove 51, and the second positioning block 53 is threadedly connected to the bottom of the bolt 52, and the second positioning block 53 is in contact with the side wall of the guide rail 3;

[0038] Since different patterns have different printing sizes, when performing screen printing, the second positioning block 53 is first moved to the side of the printed pattern away from the driving member, and the horizontal distance between the second positioning block 53 and the pattern is ensured to be greater than the length of the mounting block 32. The position of the second positioning block 53 can then be fixed by rotating the bolt 52. By so doing, the switching position of the scraper plate 34 and the ink return plate 35 can be adjusted according to the size of different patterns, thereby avoiding the situation where the scraper plate 34 has not completely scraped the pattern and the two have already completed switching, resulting in a deterioration in the screen printing effect.

[0039] As an implementation method of the utility model, please refer to the accompanying drawings Figure 6As shown, specifically, a rectangular groove 61 is formed on the outer wall of the connecting plate 6 away from the guide rod 21, a screw 62 is rotatably connected in the rectangular groove 61, the mesh plate body 63 is threadedly connected to the outside of the screw 62, and a knob 64 is rotatably connected to the bottom of the connecting plate 6, and the knob 64 is fixedly connected to the end of the screw 62;

[0040] Since the sizes of the ink scraper plate 34 and the ink return plate 35 are fixed, when screen printing is performed, the knob 64 is first rotated to drive the screw 62 to rotate. During the rotation of the screw 62, the screen body 63 will be driven to move upward until the bottom inner wall of the screen body 63 contacts the lower surface of the ink scraper plate 34. At this time, the position of the screen body 63 and the ink scraper plate 34 is corrected to ensure the normal progress of subsequent printing operations. Through such a setting, when the screen body 63 is damaged and replaced with a new plate, it can be easily corrected with the ink scraper plate 34, thereby improving work efficiency.

[0041] As an implementation method of the utility model, please refer to the accompanying drawings Figure 1 , Figure 2 As shown, specifically, the driving member includes a cylinder 31 fixedly connected to one end of the guide rail 3, the cylinder 31 is located on one side of the first positioning block 5, and the output shaft of the cylinder 31 is fixedly connected to the mounting block 32;

[0042] When screen printing is performed, it is only necessary to turn on the air cylinder 31 to drive the mounting block 32 and the ink scraper 34 to move, and since the output end of the air cylinder 31 is sufficiently stable and uniform during the output process, the printing effect of the ink scraper 34 can be improved.

[0043] As an implementation method of the utility model, please refer to the accompanying drawings Figure 2 , Figure 6 As shown, specifically, a connecting rod 23 is slidably connected between the two groups of guide rods 21, the outer wall of the connecting rod 23 is fixedly connected to the outer surface of the guide rail 3, and a hydraulic cylinder 22 is fixedly connected to the top of the workbench 1, and the output shaft of the hydraulic cylinder 22 is fixedly connected to the lower surface of the connecting rod 23;

[0044] When screen printing is performed on the shell, the shell is first placed at the bottom of the screen body 63 and the hydraulic cylinder 22 is turned on. The hydraulic cylinder 22 will drive the guide rail 3 and the screen body 63 to move downward as a whole, so that the screen body 63 moves to the surface of the shell, facilitating the normal printing operation.

[0045] Working principle: When screen printing is performed on the shell, the shell is first placed at the bottom of the screen body 63, and the hydraulic cylinder 22 is turned on. The hydraulic cylinder 22 will drive the guide rail 3 and the screen body 63 to move downward as a whole, so that the screen body 63 moves to the surface of the shell, and then the second positioning block 53 is moved to move the second positioning block 53 to the side of the printing pattern away from the cylinder 31, and ensure that the horizontal distance between the second positioning block 53 and the pattern is greater than the length of the mounting block 32, and then the position of the second positioning block 53 can be fixed by rotating the bolt 52. Through such a setting, the switching position of the ink scraper 34 and the ink return plate 35 can be adjusted according to the size of different patterns, so as to avoid the situation where the ink scraper 34 has not completely scraped the pattern and the two have completed the switching, resulting in a poor screen printing effect.

[0046] Then, the cylinder 31 is turned on to drive the mounting block 32 to move toward the other end of the guide rail 3. At this time, the ink scraper 34 will apply a certain pressure to the ink part on the screen body 63, and move at a constant speed toward the other end of the screen body 63. When the ink scraper 34 moves to the other end of the screen body 63, the extrusion block 4 will contact the second positioning block 53. As the mounting block 32 continues to move, under the limiting action of the second positioning block 53, the extrusion block 4 will be squeezed into the mounting groove 33. During the movement of the extrusion block 4, the side wall of the trapezoidal groove 41 inside the extrusion block 4 will squeeze the ink return plate 35 downward until it contacts the upper surface of the screen body 63 and stretches the elastic member, and as the extrusion block 4 moves, the ink scraper 34 will move to the other end of the screen body 63. When the extrusion block 4 moves, when the ink return plate 35 contacts the upper surface of the screen body 63, the trapezoidal groove 41 moves to the top of the ink scraper plate 34. At this time, the ink scraper plate 34 will be reset upward under the action of the elastic member, thereby separating from the screen body 63. Through such a setting, after one printing is completed, the first positioning block 5 squeezes the extrusion block 4, which can drive the ink return plate 35 to move downward and drive the ink scraper plate 34 to move upward. At this time, the ink return plate 35 can have good contact with the screen body 63, and recover the ink on the screen body 63 during the subsequent movement. There is no need to switch the use of the ink return plate 35 by rotating it, so as to ensure the normal progress of the printing operation;

[0047] When the ink return plate 35 contacts the upper surface of the screen body 63, the mounting block 32 is driven to move to the initial position by the driving member. In the process of returning to the initial position, the extrusion block 4 contacts the first positioning block 5. At this time, under the limit of the first positioning block 5, the extrusion block 4 will be squeezed toward the second positioning block 53. At this time, the trapezoidal groove 41 in the extrusion block 4 will move back to the top of the ink return plate 35. At this time, the ink return plate 35 will move upward under the action of the elastic member, and in this process, the side wall of the trapezoidal groove 41 will squeeze the ink scraper plate 34 downward, so that its bottom will fit with the bottom inner wall of the screen body 63 again, to ensure the normal progress of subsequent printing operations.

[0048] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A screen printing plate for a shell surface, comprising a workbench (1), wherein two groups of fixing seats (2) are fixedly connected to the top of the workbench (1), guide rods (21) are fixedly connected to the tops of the two groups of fixing seats (2), and guide rails (3) are slidably connected to the outsides of the two groups of guide rods (21); It is characterized in that One end of the guide rail (3) is fixedly connected to a mounting block (32) through a driving member, a mounting groove (33) is provided in the mounting block (32), a sliding groove (43) is provided at the center of the inner wall at the top of the mounting groove (33), both sides of the sliding groove (43) penetrate the mounting block (32), an extrusion block (4) is slidably connected in the sliding groove (43), a trapezoidal groove (41) is provided at the bottom of the extrusion block (4), an ink scraping plate (34) and an ink return plate (35) are fixedly connected in the mounting groove (33) through an elastic member, the ink return plate (35) and the ink scraping plate (34) are of the same size, and the outer side of the mounting groove (33) away from the guide rod (21) is Two groups of movable grooves (38) are opened on the wall, and the ink scraper (34) and the ink return plate (35) are respectively located in the two groups of movable grooves (38). The ink scraper (34) is arranged close to the driving member. The tops of the ink scraper (34) and the ink return plate (35) are fixedly connected with protrusions (36). The top inner wall of the guide rail (3) and located on one side of the driving member are fixedly connected with a first positioning block (5). The end of the top inner wall of the guide rail (3) away from the first positioning block (5) is slidably connected with a second positioning block (53). The bottom of the guide rail (3) is fixedly connected with a connecting plate (6), and the side of the connecting plate (6) away from the guide rod (21) is provided with a screen body (63).

2. The housing surface screen printing plate according to claim 1, characterized in that: The elastic member comprises a plurality of groups of springs (37) fixedly connected to the top of the ink scraper plate (34) and the ink return plate (35); the top of the spring (37) is fixedly connected to the inner wall of the top of the mounting groove (33); and the ink scraper plate (34) and the ink return plate (35) are both adapted to the size of the movable groove (38).

3. The housing surface screen printing plate according to claim 2, characterized in that: Two groups of limit grooves are provided in the slide groove (43), and the two groups of limit grooves are symmetrically arranged relative to the extrusion block (4). Two groups of limit blocks (42) are fixedly connected to the outer wall of the extrusion block (4), and the limit blocks (42) are slidably installed in the limit grooves. The limit blocks (42) are adapted to the size of the limit grooves.

4. The housing surface screen printing plate according to claim 3, characterized in that: A connecting groove (51) is provided at the top of one end of the guide rail (3) away from the first positioning block (5), a bolt (52) is slidably installed in the connecting groove (51), the second positioning block (53) is threadedly connected to the bottom of the bolt (52), and the second positioning block (53) is in contact with the side wall of the guide rail (3).

5. The housing surface screen printing plate according to claim 4, characterized in that: A rectangular groove (61) is formed on the outer wall of one side of the connecting plate (6) away from the guide rod (21), a screw rod (62) is rotatably connected in the rectangular groove (61), the mesh plate body (63) is threadedly connected to the outside of the screw rod (62), a knob (64) is rotatably connected at the bottom of the connecting plate (6), and the knob (64) is fixedly connected to the end of the screw rod (62).

6. The housing surface screen printing plate according to claim 1, characterized in that: The driving member comprises a cylinder (31) fixedly connected to one end of the guide rail (3), the cylinder (31) being located on one side of the first positioning block (5), and the output shaft of the cylinder (31) being fixedly connected to the mounting block (32).

7. The housing surface screen printing plate according to claim 1, characterized in that: A connecting rod (23) is slidably connected between the two groups of guide rods (21), the outer wall of the connecting rod (23) is fixedly connected to the outer surface of the guide rail (3), the top of the workbench (1) is fixedly connected to a hydraulic cylinder (22), and the output shaft of the hydraulic cylinder (22) is fixedly connected to the lower surface of the connecting rod (23).

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