A multi-color printing device for daily-use ceramics
Patent Information
- Application Number
- CN202522387855.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-10
- Publication Date
- 2026-09-11
- Estimated Expiration
- 2035-11-10
AI Technical Summary
[0005]针对现有技术的不足,本实用新型提供了一种日用陶瓷多色印花装置,解决了陶瓷多色印花时,不便将陶瓷快速稳定固定,不便自动将陶瓷连续印花的问题
[0017]1、该日用陶瓷多色印花装置,通过四个梯形夹持块能够抵住陶瓷件的边沿,从而能够从外部将陶瓷件水平方向夹持固定,当橡胶气囊内部气压增大体积膨胀变大猴,使得橡胶气囊能够从内部向外抵住陶瓷件,并使陶瓷件与梯形夹持块上的橡胶套紧密贴合,从而能够先将陶瓷件快速稳定夹持固定。
Smart Images

Figure CN224739047U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of ceramic printing processing technology, specifically a multi-color printing device for daily-use ceramics. Background Technology
[0002] Daily-use ceramics refer to ceramic products used in people's daily lives, mainly including bowls, plates, cups, pots, vases, etc. They have the characteristics of high temperature resistance, corrosion resistance, good heat insulation and beautiful decoration, and are widely used in tableware, tea sets, ornaments and other fields. Daily-use ceramic products are usually made by high-temperature firing process.
[0003] Ceramic printing involves creating a blank using a mold with an engraved pattern, leaving the design on the ceramic body. When printing multiple colors on ceramics, the ceramic needs to be transferred to different workstations. This process is usually done manually, which is inefficient and makes it difficult to dry the printed ceramic for quick use. Furthermore, since the ceramic is typically placed directly on the worktable, it is not stable enough. When the printing head presses down on the ceramic, it can easily cause displacement and deflection, resulting in misaligned printing and reduced quality. Utility Model Content
[0004] (a) Technical problems to be solved
[0005] To address the shortcomings of existing technologies, this utility model provides a multi-color printing device for daily-use ceramics, which solves the problems of inconvenience in quickly and stably fixing ceramics and inconvenience in automatically and continuously printing ceramics during multi-color printing.
[0006] (II) Technical Solution
[0007] To facilitate the rapid and stable fixing of ceramics during the aforementioned multi-color printing process, and to enable automatic continuous printing, this utility model provides the following technical solution: A multi-color printing device for daily-use ceramics, comprising a base, a printing structure for automatic continuous printing of ceramics provided on the side of the base, an air pump provided on the outer side of the base, a servo motor fixed on the inner bottom surface of the base, a turntable fixed on the output end of the servo motor, a bracket fixed on the inner side of the base, an external air inlet pipe fixed on the outer side of the bracket, a hollow fixed ring fixed on the inner side of the bracket, and a clamping structure for rapid fixing of ceramics provided on the turntable;
[0008] The printing structure includes a first servo-electric telescopic rod and a second servo-electric telescopic rod. A printing head is fixed to the bottom end of the first servo-electric telescopic rod, and a second servo-electric telescopic rod is fixed to the bottom end of the second servo-electric telescopic rod. An outer cover is fixed to the bottom end of the second servo-electric telescopic rod, and a hot dryer is fixed to the outer cover. A guide rail is fixed to the side of the machine base and below the printing head. An ink tank plate slides on the guide rail, and an ink scraper is provided on the ink tank plate. The top end of the ink scraper is rotatably connected to the machine base through a hinge block, and the bottom end of the ink scraper contacts the ink tank plate.
[0009] Preferably, the side of the base is provided with a horizontal electric telescopic rod and a vertical electric telescopic rod. The horizontal electric telescopic rod is used to push the ink tank plate to move horizontally. The two ends of the vertical electric telescopic rod are rotatably connected to the base and the ink scraper respectively through hinge blocks. The vertical electric telescopic rod is used to push the ink scraper to rotate. The patterns inside the grooves of the left and right ink tank plates are different.
[0010] Preferably, two first servo electric telescopic rods are provided on the left and right sides of the base, and the second servo electric telescopic rod is provided at the rear of the base.
[0011] Preferably, the hot dryer is an infrared dryer.
[0012] Preferably, the clamping structure includes a groove formed on the turntable. A third servo-electric telescopic rod is fixed inside the groove. A trapezoidal clamping block is fixed on the third servo-electric telescopic rod. A rubber sleeve is provided on the trapezoidal clamping block. A ceramic component is disposed between the trapezoidal clamping blocks. A T-shaped sealing ring is fixed at the bottom of the turntable. An inner air intake pipe is fixed on the T-shaped sealing ring. A rubber airbag is fixed at the top of the inner air intake pipe. The bottom of the inner air intake pipe extends into and communicates with the hollow fixed ring. The rubber airbag is located inside the ceramic component.
[0013] Preferably, four trapezoidal clamping blocks are equidistantly arranged along the circumference of the ceramic part.
[0014] Preferably, the hollow fixed ring has a circular opening at its top, the T-shaped sealing ring has a T-shaped cross-section, and the T-shaped sealing ring extends into the hollow fixed ring and is rotatably connected to it.
[0015] Preferably, the first servo electric telescopic rod, the second servo electric telescopic rod, the hot dryer, the horizontal and vertical electric telescopic rods on the side of the base, the servo motor, and the third servo electric telescopic rod are connected to an external PLC control system.
[0016] Compared with the prior art, this utility model provides a multi-color printing device for daily-use ceramics, which has the following beneficial effects:
[0017] 1. This daily-use ceramic multicolor printing device uses four trapezoidal clamping blocks to hold the ceramic parts against the edges, thereby clamping and fixing the ceramic parts horizontally from the outside. When the internal air pressure of the rubber airbag increases and the volume expands, the rubber airbag can press against the ceramic parts from the inside out, and make the ceramic parts fit tightly against the rubber sleeves on the trapezoidal clamping blocks, thereby quickly and stably clamping and fixing the ceramic parts.
[0018] 2. This multi-color printing device for daily-use ceramics uses a first servo-electric telescopic rod on the left to drive the printing head to print on the ceramic parts fixed below. The servo motor drives the ceramic parts to rotate 90 degrees clockwise via a turntable. The second servo-electric telescopic rod drives the outer cover to move downwards. The hot dryer first dries the surface of the printed ceramic parts, and then the turntable drives the ceramic parts to rotate 90 degrees clockwise, positioning them directly below the printing head on the right. This allows for automatic printing, improving the printing quality and efficiency of ceramic parts. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the structure of this utility model;
[0020] Figure 2 This is a schematic diagram of the printing structure of this utility model;
[0021] Figure 3 This is a schematic diagram of the turntable structure of this utility model;
[0022] Figure 4 This is a partial sectional view of the turntable structure of this utility model;
[0023] Figure 5 This utility model Figure 4 Enlarged view of a portion of the structure at point A;
[0024] Figure 6 This is a schematic diagram of the ink scraper supplying ink to the ink tank plate according to the structure of this utility model.
[0025] The components include: 1. Base; 2. Printing structure; 21. First servo electric telescopic rod; 22. Printing head; 23. Second servo electric telescopic rod; 24. Outer cover; 25. Hot dryer; 26. Guide rail; 27. Ink tank plate; 28. Ink scraper; 3. Air pump; 4. Servo motor; 5. Turntable; 6. Bracket; 7. External air inlet pipe; 8. Hollow fixed ring; 9. Clamping structure; 91. Groove; 92. Third servo electric telescopic rod; 93. Trapezoidal clamping block; 94. Rubber sleeve; 95. Ceramic part; 96. T-shaped sealing ring; 97. Internal air inlet pipe; 98. Rubber airbag. Detailed Implementation
[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0027] Please see Figure 1-6 This utility model provides a multi-color printing device for daily-use ceramics, including a base 1, a printing structure 2 for automatic continuous printing of ceramics on the side of the base 1, an air pump 3 on the outside of the base 1, a servo motor 4 fixed on the inner bottom surface of the base 1, a turntable 5 fixed on the output end of the servo motor 4, a bracket 6 fixed on the inner side of the base 1, an external air inlet pipe 7 fixed on the outside of the bracket 6, a hollow fixed ring 8 fixed on the inner side of the bracket 6, one outer end of the external air inlet pipe 7 connected to the air pump 3, and one inner end connected to the hollow fixed ring 8, and a clamping structure 9 for quick fixing of ceramics on the turntable 5.
[0028] The printing structure 2 includes a first servo-electric telescopic rod 21 and a second servo-electric telescopic rod 23. A printing head 22 is fixed to the bottom end of the first servo-electric telescopic rod 21, and a second servo-electric telescopic rod 23 is fixed to the bottom end of the second servo-electric telescopic rod 23. An outer cover 24 is fixed to the bottom end of the second servo-electric telescopic rod 23, and a heat dryer 25 is fixed to the outer cover 24. A guide rail 26 is fixed to the side of the machine base 1, below the printing head 22. An ink tank plate 27 slides on the guide rail 26, and an ink scraper 28 is provided on the ink tank plate 27. The top end of the ink scraper 28 is rotatably connected to the machine base 1 via a hinge block, and the bottom end of the ink scraper 28 contacts the ink tank plate 27. The ink scraper 28 can be supported and moved by the guide rail 26. The ink tank plate 27 can be moved inward or outward by the electric telescopic rod on the ink tank plate 27. When the ink tank plate 27 moves outward, it is convenient to apply color to the printing head 22. When the ink tank plate 27 moves inward, it is convenient for the printing head 22 to move downward through the guide rail 26 to print on the ceramic part 95. When the printing head 22 finishes printing and moves above the ink tank plate 27, the ink tank plate 27 can move inward again below the printing head 22. During the movement of the ink tank plate 27, the ink scraper 28 can scrape the ink into the grooved pattern inside the ink tank plate 27.
[0029] Furthermore, the side of the base 1 is provided with a horizontal electric telescopic rod and a vertical electric telescopic rod. The horizontal electric telescopic rod is used to push the ink tank plate 27 to move horizontally. The two ends of the vertical electric telescopic rod are rotatably connected to the base 1 and the ink scraper 28 respectively through hinge blocks. The vertical electric telescopic rod is used to push the ink scraper 28 to rotate. The patterns inside the grooves of the left and right ink tank plates 27 are different, which facilitates the horizontal electric telescopic rod to push the ink tank plate 27 to move back and forth inward or outward, and facilitates the vertical electric telescopic rod to push the ink scraper 28 to rotate. When the ink scraper 28 rotates outward, it disengages from the ink tank plate 27. When the ink scraper 28 rotates inward, it contacts the ink tank plate 27. The ink scraper 28 can scrape the ink into the groove pattern set inside the ink tank plate 27, and at the same time scrape off the excess ink outside the groove pattern, avoiding the printing head 22 from being contaminated with excess ink. The printing head 22 is made of highly elastic special silicone rubber. Made of silicone, it has good elasticity and can adapt well to the slight unevenness of the ceramic surface, ensuring complete ink transfer. The shape is controllable and can be made into various shapes such as flat and curved to match ceramic products with different curved surfaces. In the printing process, the printing head 22 first moves above the ink tank plate 27, and then moves downward to press against the ink tank plate 27. Due to the elasticity of silicone, it can fill the etched groove pattern preset in the ink tank plate 27, thereby adsorbing the ink inside to its own surface. The printing head 22, which has adsorbed the pattern ink, moves upward again, while the ink tank plate 27 moves outward. Then the printing head 22 moves downward again to the predetermined printing position of the ceramic part 95. Under the action of pressure, the silicone head achieves complete and airless tight contact with the ceramic surface. Since the affinity of the silicone head to the ceramic surface is greater than its affinity to its own surface, the ink will detach from the surface of the silicone head and be completely transferred to the ceramic glaze, thus completing the printing process.
[0030] Furthermore, two first servo electric telescopic rods 21 are provided on the left and right sides of the base 1, and the second servo electric telescopic rod 23 is provided at the rear of the base 1. Both first servo electric telescopic rods 21 are provided with printing heads 22 to facilitate multi-color printing processing of ceramic parts 95 through printing heads 22 at different positions. The outer cover 24 on the second servo electric telescopic rod 23 can dry the printed ceramic parts 95 to avoid the pattern becoming blurred and unclear during multi-color printing.
[0031] Furthermore, the hot dryer 25 is an infrared dryer. It works by irradiating the surface of an object with infrared rays, causing the moisture on the surface to absorb the infrared energy and thus evaporate, achieving the drying purpose. An infrared dryer is a drying device that utilizes infrared radiation heating. Its working principle is that infrared rays irradiate the surface of an object, causing the moisture on the surface to absorb the infrared energy and thus evaporate, achieving the drying purpose. This type of dryer has advantages such as fast drying speed, high thermal efficiency, energy saving, and environmental friendliness. During the drying process, it is necessary to remove the moisture or solvent generated during printing to form a stable pattern in subsequent printing. The dryer can provide a controllable drying environment, improving production efficiency.
[0032] Furthermore, the clamping structure 9 includes a groove 91, which is formed on the turntable 5. A third servo-electric telescopic rod 92 is fixed inside the groove 91. A trapezoidal clamping block 93 is fixed on the third servo-electric telescopic rod 92. A rubber sleeve 94 is provided on the trapezoidal clamping block 93. A ceramic part 95 is provided between the trapezoidal clamping blocks 93. A T-shaped sealing ring 96 is fixed at the bottom of the turntable 5. An inner air inlet pipe 97 is fixed on the T-shaped sealing ring 96. A rubber airbag 98 is fixed at the top of the inner air inlet pipe 97. The bottom end of the inner air inlet pipe 97 extends into and connects with the hollow fixed ring 8, and the rubber airbag 98 is located inside the ceramic part 95. The air pump 3 can deliver air into the hollow fixed ring 8 through the outer air inlet pipe 7. The gas inside the hollow fixed ring 8 can enter the rubber airbag 98 through the inner air inlet pipe 97. The pressure inside the rubber airbag 98 increases and its volume also increases. Thus, the enlarged rubber airbag 98 can press against the ceramic part 95 from the inside out, so as to clamp and fix the ceramic part 95 more stably.
[0033] Furthermore, four trapezoidal clamping blocks 93 are equidistantly arranged along the circumference of the ceramic part 95, so that the edge of the ceramic part 95 can be clamped and fixed from the outside by the four trapezoidal clamping blocks 93.
[0034] Furthermore, a circular opening is provided at the top of the hollow fixed ring 8, and the cross-section of the T-shaped sealing ring 96 is T-shaped. The T-shaped sealing ring 96 extends into the hollow fixed ring 8 and is rotatably connected to the hollow fixed ring 8, which facilitates the fixed connection between the turntable 5 and the T-shaped sealing ring 96. The T-shaped sealing ring 96 and the hollow fixed ring 8 are rotatably connected in a sealing manner. When the turntable 5 drives the T-shaped sealing ring 96 to rotate, the hollow fixed ring 8 can still send air into the rubber airbag 98 through the inner air inlet pipe 97. When it is necessary to disassemble the ceramic part 95, first move the trapezoidal clamping block 93 outward, and then deflate the rubber airbag 98 to remove the ceramic part 95. The rubber airbag 98 is made of silicone rubber, which has excellent high temperature resistance and can still maintain good elasticity and mechanical properties in high temperature environments, preventing the ceramic part 95 from transferring heat to the rubber airbag 98 after being heated, thus affecting its performance.
[0035] Furthermore, the first servo electric telescopic rod 21, the second servo electric telescopic rod 23, the hot dryer 25, the horizontal and vertical electric telescopic rods on the side of the base 1, the servo motor 4, and the third servo electric telescopic rod 92 are connected to an external PLC control system, so that the first servo electric telescopic rod 21, the second servo electric telescopic rod 23, the hot dryer 25, the horizontal and vertical electric telescopic rods on the side of the base 1, the servo motor 4, and the third servo electric telescopic rod 92 can be controlled simultaneously or individually by the external PLC control system to work together.
[0036] The working principle of this utility model is as follows: In use, the ceramic part 95 is placed between four trapezoidal clamping blocks 93. At this time, the rubber airbag 98 is located inside the ceramic part 95. Then, activating the four third servo electric telescopic rods 92 drives the four trapezoidal clamping blocks 93 at different positions to move inward simultaneously. The trapezoidal clamping blocks 93, through rubber sleeves 94, abut against the edge of the ceramic part 95, thus clamping and fixing the ceramic part 95 horizontally from the outside. Next, activating the air pump 3, through the external air inlet pipe 7, supplies air into the hollow fixed ring 8. The hollow fixed ring 8, through the internal air inlet pipe 97, supplies air into the rubber airbag 98. The increased air pressure and expansion of the rubber airbag 98 allow it to abut against the ceramic part 95 from the inside out, ensuring a tight fit between the ceramic part 95 and the rubber sleeves 94 on the trapezoidal clamping blocks 93. This allows for quick and stable clamping and fixing of the ceramic part 95, facilitating subsequent printing processing. Once the ceramic part 95 is fixed, as... Figure 2As shown, the servo motor 4 drives the turntable 5 to rotate 90 degrees clockwise, which moves the fixed ceramic part 95 to directly below the printing head 22 on the left. The first servo electric telescopic rod 21 on the left moves the printing head 22 downward to the inside of the ink tank plate 27 on the left, first coloring the printing head 22. The first servo electric telescopic rod 21 then moves the colored printing head 22 upward. A nozzle is also provided at the bottom of the ink scraper 28. The nozzle is connected to the external ink supply structure and is used to supply ink to the ink tank plate 27. The horizontal electric telescopic rod then moves the ink tank plate 27 outward, while the vertical electric telescopic rod moves the ink tank plate 27 outward. The rod then drives the ink scraper 28 to rotate outward and lift its bottom end upward, causing the bottom end of the ink scraper 28 to detach from the ink tank plate 27. During this process, the external ink supply structure sprays ink into the grooved pattern inside the ink scraper 28 through the nozzle, completing the ink supply. Then, the first servo electric telescopic rod 21 drives the printed head 22, after it has been colored, to move downward and print on the ceramic part 95 that has been fixed below. After the first servo electric telescopic rod 21 drives the printed head 22 to move upward above the ink tank plate 27, the horizontal electric telescopic rod drives the ink tank plate 27 to move inward below the printed head 22. At the same time, the vertical electric telescopic rod drives the ink... The squeegee 28 rotates downwards, bringing its bottom end into contact with the ink squeegee 28. As the ink trough plate 27 moves inwards, the ink squeegee 28 scrapes ink into the pattern inside the grooves of the ink trough plate 27. Excess ink is also scraped away from the grooves, preventing the printing head 22 from being contaminated with excess ink for the next printing. Then, the servo motor 4 drives the turntable 5 to rotate 90 degrees clockwise, positioning the ceramic part 95 directly below the outer cover 24. The second servo electric telescopic rod 23 is activated, moving the outer cover 24 downwards to the outside of the printed ceramic part 95. The ceramic part 95 is then dried by the heat dryer 2. 5. The surface of the printed ceramic part 95 can be dried first to prepare it for the next printing. This prevents the ink on the surface of the ceramic part 95 from becoming blurry during continuous printing. After drying, the outer cover 24 moves the ceramic part 95 upward and the turntable 5 rotates the ceramic part 95 clockwise by 90 degrees. This rotates the ceramic part 95 to be directly below the printing head 22 on the right. As can be seen from the above steps, the printing head 22 can re-print the dried surface of the ceramic part 95, ensuring the printing quality of the ceramic part 95. This allows for automatic and continuous multi-color printing on the ceramic part 95, improving the printing efficiency of the ceramic part 95.
[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A multi-color printing device for daily-use ceramics, comprising a base (1), characterized in that: The side of the base (1) is provided with a printing structure (2) for automatic continuous printing of ceramics. An air pump (3) is provided on the outside of the base (1). A servo motor (4) is fixed on the bottom surface of the base (1). A turntable (5) is fixed on the output end of the servo motor (4). A bracket (6) is fixed on the inner side of the base (1). An external air inlet pipe (7) is fixed on the outside of the bracket (6). A hollow fixed ring (8) is fixed on the inner side of the bracket (6). One end of the external air inlet pipe (7) is connected to the air pump (3), and one end of the inner side is connected to the hollow fixed ring (8). A clamping structure (9) for quick fixing of ceramics is provided on the turntable (5). The printing structure (2) includes a first servo electric telescopic rod (21) and a second servo electric telescopic rod (23). The bottom end of the first servo electric telescopic rod (21) is fixed with a printing head (22). The bottom end of the second servo electric telescopic rod (23) is fixed with a second servo electric telescopic rod (23). The bottom end of the second servo electric telescopic rod (23) is fixed with an outer cover (24). A hot dryer (25) is fixed on the outer cover (24). A guide rail (26) is fixed on the side of the machine base (1) and below the printing head (22). An ink tank plate (27) slides on the guide rail (26). An ink scraper (28) is provided on the ink tank plate (27). The top end of the ink scraper (28) is rotatably connected to the machine base (1) through a hinge block. The bottom end of the ink scraper (28) contacts the ink tank plate (27).
2. The multi-color printing device for daily-use ceramics according to claim 1, characterized in that: The machine base (1) is provided with a horizontal electric telescopic rod and a vertical electric telescopic rod on its side. The horizontal electric telescopic rod is used to push the ink tank plate (27) to move horizontally. The two ends of the vertical electric telescopic rod are rotatably connected to the machine base (1) and the ink scraper (28) respectively through hinge blocks. The vertical electric telescopic rod is used to push the ink scraper (28) to rotate. The patterns inside the grooves of the left and right ink tank plates (27) are different.
3. The multi-color printing device for daily-use ceramics according to claim 1, characterized in that: Two first servo electric telescopic rods (21) are provided on the left and right sides of the base (1), and the second servo electric telescopic rod (23) is provided at the rear of the base (1).
4. The multi-color printing device for daily-use ceramics according to claim 1, characterized in that: The hot dryer (25) is an infrared dryer.
5. A ceramic multi-color printing apparatus for daily use according to claim 1, characterized in that: The clamping structure (9) includes a groove (91) on the turntable (5). A third servo electric telescopic rod (92) is fixed inside the groove (91). A trapezoidal clamping block (93) is fixed on the third servo electric telescopic rod (92). A rubber sleeve (94) is provided on the trapezoidal clamping block (93). A ceramic part (95) is provided between the trapezoidal clamping blocks (93). A T-shaped sealing ring (96) is fixed at the bottom of the turntable (5). An inner air inlet pipe (97) is fixed on the T-shaped sealing ring (96). A rubber airbag (98) is fixed at the top of the inner air inlet pipe (97). The bottom end of the inner air inlet pipe (97) extends into the hollow fixed ring (8) and communicates with it. The rubber airbag (98) is located inside the ceramic part (95).
6. The multi-color printing device for daily-use ceramics according to claim 5, characterized in that: The trapezoidal clamping blocks (93) are arranged at equal intervals along the circumference of the ceramic part (95).
7. A ceramic multi-color decorating apparatus as claimed in claim 5, wherein: The hollow fixed ring (8) has a circular opening at its top. The cross-section of the T-shaped sealing ring (96) is T-shaped. The T-shaped sealing ring (96) extends into the hollow fixed ring (8) and is rotatably connected to the hollow fixed ring (8).
8. The multi-color printing device for daily-use ceramics according to claim 5, characterized in that: The first servo electric telescopic rod (21), the second servo electric telescopic rod (23), the hot dryer (25), the horizontal electric telescopic rod and the vertical electric telescopic rod on the side of the base (1), the servo motor (4), and the third servo electric telescopic rod (92) are connected to the external PLC control system.