Automatic glue spraying machine capable of uniformly spraying glue for processing disposable surgical drape

Abstract

The utility model discloses an automatic uniform-glue-spraying glue sprayer for processing a disposable surgical drape. The automatic uniform-glue-spraying glue sprayer comprises a table, a smoothing mechanism and a glue spraying mechanism, supports which are symmetrically distributed front and back are fixedly connected to the upper surface of the table, and a supporting table is fixedly connected to the rear side of the upper surface of the table; the flattening mechanism comprises a first supporting plate, lower pressing plates, second supporting plates, a positioning plate and a flattening plate, the first supporting plate and the two second supporting plates are arranged between the upper ends of the supports, the first supporting plate is located between the two second supporting plates, the lower pressing plates are arranged at the lower ends of the first supporting plate and the second supporting plates, the positioning plate is arranged at the lower end of the lower pressing plate in the middle, and the flattening plate is located between the positioning plate and the positioning plate. The glue spraying mechanism is arranged at the upper end of the supporting table, according to the automatic glue spraying machine used for processing the disposable surgical drapes and capable of uniformly spraying the glue, the surgical drapes are automatically smoothed before glue spraying, wrinkles of the surgical drapes are removed, and uniform glue spraying is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of surgical drape processing technology, specifically to an automatic glue spraying machine for uniformly spraying glue for processing disposable surgical drapes. Background Technology

[0002] Single-use surgical drapes are sterile consumables specifically designed for medical institutions. Made from materials such as non-woven fabric and PE film, they are waterproof, impermeable, and antistatic. Their multi-layered structure includes an absorbent layer (absorbing blood / tissue fluid), a waterproof layer (blocking liquids), and a protective layer. Some products integrate instrument bags and securing straps to enhance ease of use. Their core value lies in preventing iatrogenic infections. Sterilization with ethylene oxide ensures a sterile environment, and their single-use nature eliminates the risk of cross-infection. Clinically, they are suitable for open surgeries in general surgery, orthopedics, obstetrics, and other procedures, as well as for sterile environments in outpatient and emergency departments.

[0003] Single-layer surgical drapes require an automatic glue spraying machine for application. Workers then bond the glued single-layer surgical drapes to other layers. To increase efficiency, surgical drapes of the same layer are often stacked together. Since surgical drapes are made of materials such as fabric, wrinkles are inevitable when they are stacked together. If the glue spraying head moves to the wrinkles, the glue thickness will be uneven. Therefore, we propose an automatic glue spraying machine for processing disposable surgical drapes that can spray glue evenly. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide an automatic glue spraying machine for processing disposable surgical drapes with uniform glue spraying. Before spraying glue, the surgical drape is automatically smoothed and wrinkles are removed, which facilitates uniform glue spraying and can effectively solve the problems in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an automatic glue spraying machine for uniformly spraying glue for processing disposable surgical sheets, comprising a table, a smoothing mechanism, and a glue spraying mechanism;

[0006] Table: Its upper surface is fixedly connected with symmetrically distributed supports, and a support platform is fixedly connected to the rear side of the upper surface of the table.

[0007] Smoothing mechanism: It includes a support plate 1, a lower pressure plate, a support plate 2, a positioning plate and a smoothing plate. The upper ends of the bracket are provided with a support plate 1 and two support plates 2. The support plate 1 is located between the two support plates 2. The lower ends of the support plate 1 and the support plate 2 are provided with lower pressure plates. The lower end of the middle lower pressure plate is provided with a positioning plate. The lower ends of the lower pressure plates on the left and right sides are provided with smoothing plates.

[0008] Adhesive spraying mechanism: It is located at the top of the support platform. Before spraying adhesive, it automatically smooths out the surgical drape, removes wrinkles, and facilitates even adhesive spraying.

[0009] Furthermore, it also includes a controller, which is located at the top of the table and whose input is electrically connected to an external power source to control electrical appliances.

[0010] Furthermore, the smoothing mechanism also includes a fixed platform, a sliding column one, a cylinder two, a bidirectional linear guide rail, and a sliding column two. The upper end of the rear bracket is fixedly connected to the bidirectional linear guide rail. The rear end of the support plate two is fixedly connected to the upper ends of the two sliding tables one of the bidirectional linear guide rail. The upper end of the front bracket is fixedly connected to the fixed platform. Sliding columns one are fixedly connected between the left and right sides of the fixed platform. The left end of the support plate two is slidably connected to the outside of the sliding column one. The front side of the support platform is fixedly connected to the sliding column two through a fixed seat one. The support plate one is slidably connected between the sliding column one and the sliding column two. The upper surfaces of the support plate one and the support plate two are fixedly connected to evenly distributed cylinder twos. The lower pressure plate is fixedly connected between the lower ends of the telescopic ends of the cylinder two located on the support plate one and between the lower ends of the telescopic ends of the cylinder two located on the support plate two. The air inlets of the cylinder two are all connected to the air outlets of external air pumps. The input end of the bidirectional linear guide rail is electrically connected to the output end of the controller to realize the opposite movement of the smoothing plate.

[0011] Furthermore, the smoothing mechanism also includes a cylinder, which is fixedly connected to the bottom wall of the fixed platform. The telescopic end of the cylinder is fixedly connected to the left end of the support plate, and the air inlet of the cylinder is connected to the air outlet of an external air pump to position the positioning plate and avoid the glue spray head.

[0012] Furthermore, it also includes a telescopic mechanism, which includes an upper sleeve, a retaining ring, a spring, and a lower sleeve. The bottom wall of the lower pressure plate is fixedly connected to an evenly distributed upper sleeve. The lower sleeve is slidably connected to the inside of each upper sleeve. Each lower sleeve has a retaining ring at its upper end, which is located inside the adjacent upper sleeve. Springs are placed inside the upper sleeve and the vertically adjacent lower sleeve. A positioning plate is fixedly connected between the lower ends of the lower sleeves located at the lower end of the lower pressure plate in the middle. A stroking plate is fixedly connected between the lower ends of the lower sleeves at the lower ends of the lower pressure plates on the left and right sides, so that the positioning plate and the stroking plate keep pressing the surgical drape.

[0013] Furthermore, the glue spraying mechanism includes a slide rail, a linear guide rail one, a linear guide rail two, a glue spraying head, a cylinder three, and a support rod. The front end of the upper surface of the support platform is fixedly connected to the linear guide rail one, and the rear end of the upper surface of the support platform is fixedly connected to the slide rail. The upper end of the slide table two of the linear guide rail one is fixedly connected to the support rod, and the rear end of the support rod is slidably connected to the upper end of the slide rail. The front end of the support rod is fixedly connected to the linear guide rail two, and the right side of the slide table three of the linear guide rail two is fixedly connected to the cylinder three. The lower end of the telescopic end of the cylinder three is fixedly connected to the glue spraying head through a fixed seat two. The input ends of the linear guide rail one and the linear guide rail two are both electrically connected to the output end of the controller to realize the position movement of the glue spraying head.

[0014] Furthermore, the glue spraying mechanism also includes a distance sensor one and a distance sensor two. The distance sensor one is fixedly connected to the rear end of the support rod, and the distance sensor one corresponds to the front and rear positions of the cylinder three. The distance sensor two is fixedly connected to the left side of the upper surface of the support platform, and the distance sensor two corresponds to the left and right positions of the support rod. Both the distance sensor one and the distance sensor two are bidirectionally electrically connected to the controller to achieve precise displacement control.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This automatic glue spraying machine for processing disposable surgical sheets with uniform glue application has the following advantages:

[0016] Before applying the adhesive, the telescopic end of cylinder two extends, causing the positioning plate and the flat plate to press down and tighten the surgical drape. Then, the bidirectional linear guide rail drives the two flat plates to move away from each other, smoothing out the surgical drape. The cooperation of the upper sleeve, spring and lower sleeve ensures that the positioning plate and the flat plate maintain pressure on surgical drapes of different heights. After the surgical drape is smoothed out, the surface is flatter and the adhesive is applied more evenly. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present utility model.

[0018] Figure 2 This is a schematic diagram of the smoothing mechanism of this utility model.

[0019] Figure 3 This is an enlarged cross-sectional view of section A of the present invention.

[0020] Figure 4 This is an enlarged structural diagram of section B of the present invention.

[0021] In the diagram: 1. Table, 2. Smoothing mechanism, 201. Fixed platform, 202. Sliding column one, 203. Support plate one, 204. Cylinder one, 205. Lower pressure plate, 206. Cylinder two, 207. Support plate two, 208. Positioning plate, 209. Smoothing plate, 210. Bidirectional linear guide rail, 211. Sliding column two, 3. Bracket, 4. Telescopic mechanism, 41. Upper sleeve, 42. Snap ring, 43. Spring, 44. Lower sleeve, 5. Glue spraying mechanism, 51. Sliding rail, 52. Linear guide rail one, 53. Distance sensor one, 54. Linear guide rail two, 55. Glue spraying head, 56. Cylinder three, 57. Support rod, 58. Distance sensor two, 6. Support platform, 7. Controller. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4 This embodiment provides a technical solution: an automatic glue spraying machine for uniformly spraying glue for processing disposable surgical sheets, including a table 1, a smoothing mechanism 2 and a glue spraying mechanism 5;

[0024] Table 1: Its upper surface is fixedly connected to symmetrically distributed supports 3, and a support platform 6 is fixedly connected to the rear side of the upper surface of table 1.

[0025] Smoothing mechanism 2: It includes a support plate 1 203, a lower pressure plate 205, a support plate 207, a positioning plate 208, and a smoothing plate 209. A support plate 1 203 and two support plates 207 are arranged between the upper ends of the bracket 3. The support plate 1 203 is located between the two support plates 207. A lower pressure plate 205 is provided at the lower end of both support plates 1 203 and support plates 207. A positioning plate 208 is provided at the lower end of the middle lower pressure plate 205, and smoothing plates 209 are provided at the lower ends of the lower pressure plates 205 on both the left and right sides. Smoothing mechanism 2 also includes a fixed platform 201, a sliding column 1 202, a cylinder 206, a bidirectional linear guide rail 210, and a sliding column 211. The rear side... A bidirectional linear guide rail 210 is fixedly connected to the upper end of the bracket 3. The rear ends of the second support plate 207 are fixedly connected to the upper ends of the two slide tables 1 of the bidirectional linear guide rail 210. A fixed platform 201 is fixedly connected to the upper end of the front bracket 3. A sliding column 202 is fixedly connected between the left and right sides of the fixed platform 201. The left ends of the second support plate 207 are slidably connected to the outside of the sliding column 202. A sliding column 211 is fixedly connected to the front side of the support platform 6 through a fixed seat 1. A support plate 203 is slidably connected between the sliding column 202 and the sliding column 211. Cylinders 206 are evenly distributed and fixedly connected to the upper surfaces of the first support plate 203 and the second support plate 207. The lower pressure plate 2 05 is fixedly connected between the lower ends of the telescopic ends of cylinder 206 located on support plate 203 and between the lower ends of the telescopic ends of cylinder 206 located on support plate 207. The air inlets of cylinder 206 are connected to the air outlet of an external air pump. The input end of the bidirectional linear guide 210 is electrically connected to the output end of the controller 7. The smoothing mechanism 2 also includes cylinder 204. Cylinder 204 is fixedly connected to the bottom wall of the fixed platform 201. The telescopic end of cylinder 204 is fixedly connected to the left end of support plate 203. The air inlet of cylinder 204 is connected to the air outlet of an external air pump. Before spraying glue, the telescopic end of cylinder 206 is extended, and the lower pressure plate 205 is lowered. The positioning plate 208 and the smoothing plate 209 press the surgical drape downwards. Then, the two slides of the bidirectional linear guide 210 move away from each other, causing the two support plates 207 to slide away from each other on the slide column 202. The two smoothing plates 209 move synchronously to smooth the surgical drape. The position of the positioning plate 208 remains unchanged to avoid displacement of the surgical drape caused by friction due to the smoothing plate 209. After smoothing, the smoothing plates 209 are located on the left and right sides of the surgical drape. Finally, the telescopic end of the cylinder 204 retracts, the lower pressure plate 205 moves down and lifts, and the telescopic end of the cylinder 204 pushes out, pushing the support plate 203 to the left between the slide column 202 and the slide column 211 to avoid obstructing the glue spray head 55.

[0026] The glue spraying mechanism 5 is located on the upper end of the support platform 6. The glue spraying mechanism 5 includes a slide rail 51, a first linear guide rail 52, a second linear guide rail 54, a glue spraying head 55, a third cylinder 56, and a support rod 57. The first linear guide rail 52 is fixedly connected to the front end of the upper surface of the support platform 6, and the slide rail 51 is fixedly connected to the rear end of the upper surface of the support platform 6. The support rod 57 is fixedly connected to the upper end of the slide rail 52. The rear end of the support rod 57 is slidably connected to the upper end of the slide rail 51. A linear guide rail 2 54 is fixedly connected to the front end of the support rod 57. A cylinder 3 56 is fixedly connected to the right side of the slide table 3 of the linear guide rail 2 54. A glue spraying head 55 is fixedly connected to the lower end of the telescopic end of the cylinder 3 56 via a fixed base 2. The input ends of the linear guide rail 1 52 and the linear guide rail 2 54 are both electrically connected to the output end of the controller 7. The glue spraying mechanism 5 also includes a distance sensor 1 53 and a distance sensor 2 58. A distance sensor 1 53 is fixedly connected to the rear end of the support rod 57. Distance sensor 1 53 corresponds to the front and rear positions of cylinder 3 56. Distance sensor 2 58 is fixedly connected to the left side of the upper surface of support platform 6. Distance sensor 2 58 corresponds to the left and right positions of support rod 57. Both distance sensor 1 53 and distance sensor 2 58 are bidirectionally electrically connected to controller 7. The glue spray head 55 is connected to an external glue pump. When the glue pump is started, it sends glue into the glue spray head 55 to achieve glue spraying. The glue spraying route is written through controller 7. The slide table 2 of linear guide 1 52 drives support rod 57 and linear guide 2 54 to move left and right. The slide table 3 of linear guide 2 54 drives glue spray head 55 and cylinder 3 56 to move back and forth. Distance sensor 1 53 feeds back the change in distance between itself and cylinder 3 56 to controller 7. Distance sensor 2 58 feeds back the change in distance between itself and support rod 57 to controller 7, realizing the precise position movement of glue spray head 55. With the cooperation of linear guide 1 52 and linear guide 2 54, glue spray head 55 moves along the designed route to spray glue.

[0027] It also includes a controller 7, which is located at the top of the table 1, and the input terminal of the controller 7 is electrically connected to an external power source.

[0028] The system also includes a telescopic mechanism 4, which comprises an upper sleeve 41, a retaining ring 42, a spring 43, and a lower sleeve 44. The bottom wall of the lower pressure plate 205 is fixedly connected to evenly distributed upper sleeves 41. Lower sleeves 44 are slidably connected inside each upper sleeve 41. Each lower sleeve 44 has a retaining ring 42 at its upper end, located inside adjacent upper sleeves 41. Springs 43 are placed inside both the upper sleeve 41 and the vertically adjacent lower sleeves 44. A positioning plate 208 is fixedly connected to the lower sleeve located in the middle. Between the lower ends of the lower sleeves 44 at the lower end of the pressure plate 205, the flat plate 209 is fixedly connected to the lower ends of the lower sleeves 44 at the lower ends of the pressure plates 205 on the left and right sides respectively. The surgical drape simultaneously pushes the positioning plate 208 and the flat plate 209 upwards, and the lower sleeve 44 retracts into the interior of the vertically adjacent upper sleeve 41. The spring 43 is compressed, and the elastic potential energy of the spring 43 generates a reaction force on the lower sleeve 44, pushing the lower sleeve 44 downwards, so that the positioning plate 208 and the flat plate 209 keep pressing the surgical drapes at different heights.

[0029] The working principle of the automatic glue spraying machine for uniformly spraying adhesive for processing disposable surgical drapes provided by this utility model is as follows: Stacked surgical drapes are placed inside the table 1. The glue spraying head 55 is connected to an external glue pump. When the glue pump is activated, it delivers adhesive into the glue spraying head 55 to achieve glue spraying. The glue spraying route is written through the controller 7. The slide table 2 of linear guide rail 1 52 drives the support rod 57 and linear guide rail 2 54 to move left and right. The slide table 3 of linear guide rail 2 54 drives the glue spraying head 55 and cylinder 3 56 to move back and forth. The distance sensor 1 53 feeds back the change in distance between itself and cylinder 3 56 to the controller 7. The distance sensor 2 58 feeds back the change in distance between itself and the support rod 57 to the controller 7, achieving precise positional movement of the glue spraying head 55. Before glue spraying, the telescopic end of cylinder 2 206 extends, the lower pressure plate 205 moves downward, and the positioning plate 208 and the flat plate 209 press the surgical drape downward. Simultaneously, the surgical drape pushes against the positioning plate 208 and the flat plate 209, and the lower sleeve 44 retracts vertically. Inside the adjacent upper sleeve 41, the spring 43 is compressed. The elastic potential energy of the spring 43 generates a reaction force on the lower sleeve 44, pushing it down. This keeps the positioning plate 208 and the smoothing plate 209 pressing against the surgical drapes at different heights. Subsequently, the two slides of the bidirectional linear guide 210 move in opposite directions, causing the two support plates 207 to slide in opposite directions on the sliding column 202. The two smoothing plates 209 move synchronously, smoothing the surgical drape. The position of the positioning plate 208 remains unchanged. To prevent displacement of the surgical drape due to friction caused by the smoothing plate 209, the smoothing plate 209 is positioned on the left and right sides of the surgical drape after smoothing. Finally, the telescopic end of cylinder 1 204 is retracted, the lower pressure plate 205 is lowered and raised, and the telescopic end of cylinder 1 204 is pushed out, pushing the support plate 1 203 to the left between slide column 1 202 and slide column 2 211 to avoid obstructing the glue spraying head 55. The glue spraying head 55 moves along the designed route to spray glue with the cooperation of linear guide rail 1 52 and linear guide rail 2 54.

[0030] It is worth noting that the controller 7 disclosed in the above embodiments can be an OHR-PR20 controller, the bidirectional linear guide 210 can be an ETH6M-L20 bidirectional linear module, both linear guide 1 52 and linear guide 2 54 can be RY100 electric linear guides, and both distance sensor 1 53 and distance sensor 2 58 can be UB1000-18GM55-E distance sensors. The controller 7 controls the bidirectional linear guide 210, linear guide 1 52, linear guide 2 54, distance sensor 1 53, distance sensor 2 58 and external glue pump using methods commonly used in the prior art.

[0031] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An automatic glue spraying machine for uniformly applying adhesive to disposable surgical sheets, characterized in that: It includes a table (1), a smoothing mechanism (2), and a glue spraying mechanism (5); Table (1): Its upper surface is fixedly connected with symmetrically distributed supports (3), and the upper surface of the table (1) is fixedly connected with a support platform (6); Smoothing mechanism (2): It includes a support plate 1 (203), a lower pressure plate (205), a support plate 2 (207), a positioning plate (208), and a smoothing plate (209). The upper end of the bracket (3) is provided with a support plate 1 (203) and two support plates 2 (207). The support plate 1 (203) is located between the two support plates 2 (207). The lower end of the support plate 1 (203) and the support plate 2 (207) is provided with a lower pressure plate (205). The lower end of the middle lower pressure plate (205) is provided with a positioning plate (208). The lower ends of the lower pressure plates (205) on the left and right sides are provided with smoothing plates (209). The glue spraying mechanism (5) is located at the top of the support platform (6).

2. The automatic glue spraying machine for uniformly spraying adhesive for processing disposable surgical sheets according to claim 1, characterized in that: It also includes a controller (7), which is located at the top of the table (1), and the input terminal of the controller (7) is electrically connected to an external power source.

3. An automatic glue spraying machine for uniformly spraying adhesive for processing disposable surgical sheets according to claim 2, characterized in that: The smoothing mechanism (2) also includes a fixed platform (201), a sliding column (202), a cylinder (206), a bidirectional linear guide (210), and a sliding column (211). The upper end of the rear bracket (3) is fixedly connected to the bidirectional linear guide (210). The rear end of the support plate (207) is fixedly connected to the upper ends of the two sliding tables of the bidirectional linear guide (210). The upper end of the front bracket (3) is fixedly connected to the fixed platform (201). The sliding column (202) is fixedly connected between the left and right sides of the fixed platform (201). The left end of the support plate (207) is slidably connected to the outside of the sliding column (202). The front side of the support platform (6) is fixedly connected to the fixed platform (201). A base is fixedly connected to a sliding column 2 (211). A support plate 1 (203) is slidably connected between the sliding column 1 (202) and the sliding column 2 (211). The upper surfaces of the support plate 1 (203) and the support plate 2 (207) are fixedly connected to cylinders 2 (206) that are evenly distributed. The lower pressure plate (205) is fixedly connected between the lower ends of the telescopic ends of cylinders 2 (206) located on the support plate 1 (203) and between the lower ends of the telescopic ends of cylinders 2 (206) located on the support plate 2 (207). The air inlets of cylinders 2 (206) are connected to the air outlets of external air pumps. The input end of the bidirectional linear guide rail (210) is electrically connected to the output end of the controller (7).

4. An automatic glue spraying machine for uniformly spraying adhesive for processing disposable surgical sheets according to claim 3, characterized in that: The smoothing mechanism (2) also includes a cylinder (204). The bottom wall of the fixed platform (201) is fixedly connected to the cylinder (204). The telescopic end of the cylinder (204) is fixedly connected to the left end of the support plate (203). The air inlet of the cylinder (204) is connected to the air outlet of the external air pump.

5. An automatic glue spraying machine for uniformly spraying adhesive for processing disposable surgical sheets according to claim 1, characterized in that: It also includes a telescopic mechanism (4), which includes an upper sleeve (41), a retaining ring (42), a spring (43) and a lower sleeve (44). The bottom wall of the lower pressure plate (205) is fixedly connected with evenly distributed upper sleeves (41). The interior of each upper sleeve (41) is slidably connected with a lower sleeve (44). The upper end of each lower sleeve (44) is provided with a retaining ring (42). The retaining rings (42) are located inside adjacent upper sleeves (41). Springs (43) are placed inside both the upper sleeve (41) and the vertically adjacent lower sleeves (44). The positioning plate (208) is fixedly connected between the lower ends of the lower sleeves (44) at the lower end of the lower pressure plate (205) located in the middle. The flat plate (209) is fixedly connected between the lower ends of the lower sleeves (44) at the lower ends of the lower pressure plates (205) on the left and right sides respectively.

6. An automatic glue spraying machine for uniformly spraying adhesive for processing disposable surgical sheets according to claim 2, characterized in that: The glue spraying mechanism (5) includes a slide rail (51), a linear guide rail one (52), a linear guide rail two (54), a glue spraying head (55), a cylinder three (56), and a support rod (57). The front end of the upper surface of the support platform (6) is fixedly connected to the linear guide rail one (52), and the rear end of the upper surface of the support platform (6) is fixedly connected to the slide rail (51). The upper end of the slide table two of the linear guide rail one (52) is fixedly connected to the support rod (57), and the rear end of the support rod (57) is slidably connected to the upper end of the slide rail (51). The front end of the support rod (57) is fixedly connected to the linear guide rail two (54), and the right side of the slide table three of the linear guide rail two (54) is fixedly connected to the cylinder three (56). The lower end of the telescopic end of the cylinder three (56) is fixedly connected to the glue spraying head (55) through a fixed seat two. The input ends of the linear guide rail one (52) and the linear guide rail two (54) are both electrically connected to the output end of the controller (7).

7. An automatic glue spraying machine for uniformly spraying adhesive for processing disposable surgical sheets according to claim 6, characterized in that: The glue spraying mechanism (5) also includes a distance sensor one (53) and a distance sensor two (58). The distance sensor one (53) is fixedly connected to the rear end of the support rod (57). The distance sensor one (53) corresponds to the front and rear positions of the cylinder three (56). The distance sensor two (58) is fixedly connected to the left side of the upper surface of the support platform (6). The distance sensor two (58) corresponds to the left and right positions of the support rod (57). Both the distance sensor one (53) and the distance sensor two (58) are bidirectionally electrically connected to the controller (7).

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