Lithium battery positive and negative pressure circulating liquid injection equipment

Abstract

The invention discloses lithium battery positive and negative pressure circulation liquid injection equipment which comprises an X-axis ground rail trolley, a lifter, a Y-axis sliding table, standing tanks, a bottom shell, a material bracket, a gas source pipeline, a booster pump, a vacuum pump and a gas storage tank, the lifter is erected on the X-axis ground rail trolley, the Y-axis sliding table is hung on the lifter, the standing tanks are arranged along the X-axis ground rail trolley, and the bottom shell is arranged on the bottom shell. The standing tank is opened downwards and covers the bottom shell to form a sealed cavity, and the bottom shell is provided with a material bracket in the standing tank. Through the mode, the lithium battery positive and negative pressure circulating liquid injection equipment provided by the invention realizes large-range rapid shear response through the X-axis ground rail trolley, and realizes rapid butt joint of upstream and downstream through a bidirectional telescopic mode by virtue of mutual cooperation of the traction bracket and the material receiving carrier plate, so that large-scale application of a battery liquid injection post-treatment process is realized; the production efficiency is obviously improved, and the equipment cost is greatly reduced.

Description

Technical Field

[0001] The present invention relates to the field of lithium battery production and processing equipment, and in particular to a lithium battery positive and negative pressure circulation injection device. Background Art

[0002] The lithium battery filling process also involves bulk transportation on and off the production line. Existing technologies typically use conveyors, robotic arms, and other devices to transport non-standard tooling. Conveyors are unable to handle the final distance of material transfer at the final destination, necessitating the cross-line coordination of robotic arms. Due to their high cost and bulk, robotic arms are difficult to use in confined areas. Furthermore, the limited operating radius of robotic arms, constrained by their high equipment costs, makes it difficult to scale up the lithium battery filling process to meet production needs. Summary of the Invention

[0003] The main technical problem solved by the present invention is to provide a lithium battery positive and negative pressure circulation injection equipment, which realizes a large-scale rapid shear response through the X-axis ground rail trolley, and with the help of the mutual cooperation between the traction bracket and the material carrier plate, realizes the rapid docking of upstream and downstream through a two-way telescopic method, thereby realizing the large-scale application of the battery injection post-processing process, significantly improving production efficiency and greatly reducing equipment costs.

[0004] In order to solve the above technical problems, a technical solution adopted by the present invention is: providing a lithium battery positive and negative pressure circulation injection equipment, including an X-axis ground rail trolley, an elevator, a Y-axis slide, a static tank, a bottom shell, a material bracket, an air source pipeline, a booster pump, a vacuum pump, and an air storage tank. The X-axis ground rail trolley is provided with an elevator, and the elevator is mounted with a Y-axis slide. Several static tanks are arranged along the X-axis ground rail trolley, and the static tank is opened downward and covers the bottom shell to form a sealed cavity. The bottom shell is provided with a material bracket in the static tank, and the Y-axis slide is docked with the material bracket. The sealed cavity is connected to the air source pipeline through a valve, and the air source pipeline is connected to the booster pump and the vacuum pump respectively, and the booster pump is connected to the air storage tank.

[0005] In a preferred embodiment of the present invention, a first docking end face is provided on the edge of the bottom shell, and a second docking end face is provided on the lower edge of the static tank. The first docking end face and the second docking end face are aligned with each other, and a card groove is provided on the first docking end face. A sealing ring is laid along the card groove on the first docking end face, and the sealing ring is fixed in a V-shape at the card groove and has an interference fit with the second docking end face.

[0006] In a preferred embodiment of the present invention, the outer edge of the lower edge of the static tank is provided with a plurality of upper external teeth arranged at equal intervals, the outer edge of the upper edge of the bottom shell is provided with a plurality of lower external teeth that correspond one-to-one to the upper external teeth, and the outer periphery of the bottom shell is provided with an annular limiting ring, and a C-shaped groove is provided on the inner side of the annular limiting ring, and the upper external teeth and lower external teeth that are connected to each other are matched in the C-shaped groove.

[0007] In a preferred embodiment of the present invention, the annular limit ring is provided with a plurality of notches on the upper and lower side walls of the C-shaped groove, and the shape and size of the notches match the upper external teeth and the lower external teeth. The bottom surface of the annular limit ring is supported on a plurality of pulleys, and a shift block is provided on the lower edge of the annular limit ring. The shift block is movably connected to a horizontal cylinder arranged on the tangent of the annular limit ring through a ball head. The horizontal cylinder is mounted on a universal joint seat, and the stroke of the horizontal cylinder is greater than the length of the notch; the outer wall of the static tank is provided with a sub-bracket, and a linear bearing is installed on the sub-bracket. The linear bearing is connected to a plurality of Z-axis lifting guide columns, and the sub-bracket is supported on a plurality of Z-axis lifting cylinders.

[0008] In a preferred embodiment of the present invention, the bottom shell is hemispherical in shape and is provided with a plurality of pillars inside, the pillars horizontally support a bottom support, the bottom support is installed with a material bracket, the material bracket has multiple layers and is docked with the Y-axis slide, the elevator is a servo screw elevator, and the Z-axis travel range and Y-axis travel range of the Y-axis slide match the material bracket.

[0009] In a preferred embodiment of the present invention, a lifting platform is mounted on the elevator, and a pair of Y-axis brackets are provided on the lifting platform, and a Y-axis slider is invertedly provided on the Y-axis bracket, and a Y-axis rail is horizontally connected in the Y-axis slider, and a material receiving carrier plate is carried on the Y-axis rail, and a support is provided on the bottom surface of the material receiving carrier plate, and a Y-axis rack is horizontally installed on the bottom of the support, and a gear shaft is meshed and connected below the Y-axis rack, and the gear shaft is hoisted on the bottom surface of the lifting platform through a bearing seat, and the gear shaft is connected to a drive motor via a transmission gear set, and a plurality of pulley seats are provided in the extension direction of the Y-axis bracket, and the pulley seats are supported under the Y-axis rail.

[0010] In a preferred embodiment of the present invention, a pair of Y-axis optical axis slides and a pair of Y-axis gear rails are provided on the bottom surface of the material receiving carrier plate, a sub-platform is arranged between the Y-axis optical axis slides, an auxiliary motor is arranged on the sub-platform, the auxiliary motor is engaged with the Y-axis gear rails through gear transmission, two groups of guide sleeves are provided on the sub-platform, a lifting column is vertically inserted in the guide sleeve, a traction bracket is horizontally installed on the lifting column, a material positioning pin is provided on the traction bracket, a small cylinder is provided on the sub-platform, and the small cylinder top support is connected under the traction bracket.

[0011] In a preferred embodiment of the present invention, the surface of the material receiving carrier plate is open and inlaid with a plurality of fixed pulleys, the edge of the material receiving carrier plate is provided with side guard bars, and the side guard bars are provided with limiting slots, and backplane brackets are provided on both sides of the lifting platform, and an X-axis telescopic cylinder is installed on the backplane bracket, and a limiting pin is installed on the X-axis telescopic cylinder, and the limiting pin is plugged into the limiting slot.

[0012] In a preferred embodiment of the present invention, the X-axis ground rail trolley is composed of a ground rail and a mobile trolley, a long-distance rack is arranged parallel between the ground rails, the mobile trolley is provided with a vehicle-mounted motor, and the vehicle-mounted motor drives the long-distance rack through gear engagement, and the front and rear ends of the mobile trolley are provided with X-axis oil-free bushings, the X-axis oil-free bushings are connected with X-axis guide column springs, and the front end of the X-axis guide column springs is installed with an anti-collision guard plate.

[0013] The beneficial effects of the present invention are as follows: the positive and negative pressure circulation injection equipment for lithium batteries provided by the present invention realizes a large-scale rapid shear response through the X-axis ground rail trolley, and with the help of the mutual cooperation between the traction bracket and the material carrier plate, realizes rapid docking of upstream and downstream through a two-way telescopic method, thereby realizing the large-scale application of the battery injection post-processing process, significantly improving production efficiency and greatly reducing equipment costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive work, among which: Figure 1 This is an overall structural diagram of a lithium battery positive and negative pressure circulation injection device of the present invention; Figure 2 It is a cross-sectional structural diagram of the static tank; Figure 3 This is a structural diagram of the static tank and the bottom shell in two states: lifting separation and positive pressure locking; Figure 4 It is a structural diagram of the bottom shell and the standing tank; Figure 5 It is the structural diagram of the lifting platform; Figure 6 This is the structural diagram of the material carrier; Figure 7 It is a structural diagram of the traction bracket; Figure 8 This is an exploded view of the three major components on the lifting platform; Figure 9 It is a structural diagram of the mobile car. DETAILED DESCRIPTION

[0015] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0016] like Figure 1-9 As shown, the embodiment of the present invention includes: A positive and negative pressure circulation injection device for lithium batteries, comprising an X-axis ground rail trolley 1, an elevator 2, a Y-axis slide 3, a static tank 4, a bottom shell 5, a material bracket 6, an air source pipeline 7, a booster pump 8, a vacuum pump 9, and an air storage tank 10. The X-axis ground rail trolley 1 is provided with an elevator 2, the elevator 2 is mounted with a Y-axis slide 3, and several static tanks 4 are arranged along the X-axis ground rail trolley 1. The static tank 4 is opened downward and covers the bottom shell 5 to form a sealed cavity. The bottom shell 5 is provided with a material bracket 6 in the static tank 4. The Y-axis slide 3 is docked with the material bracket 6. The sealed cavity is connected to the air source pipeline 7 through a valve. The air source pipeline 7 is respectively connected to the booster pump 8 and the vacuum pump 9, and the booster pump 8 is connected to the air storage tank 10.

[0017] Among them, a first docking end face 501 is provided at the edge of the bottom shell 5, and a second docking end face 502 is provided at the lower edge of the static tank 4. The first docking end face 501 and the second docking end face 502 are aligned with each other, and the first docking end face 501 is provided with a card groove 503. The first docking end face 501 is provided with a sealing ring 504 along the card groove 503. The sealing ring 504 is fixed in a V-shape at the card groove 503 and is interference fit with the second docking end face 502.

[0018] Furthermore, the outer edge of the lower edge of the static tank 4 is provided with a number of upper external teeth 401 arranged at equal intervals, and the outer edge of the upper edge of the bottom shell 5 is provided with a number of lower external teeth 510 that correspond one-to-one to the upper external teeth 401. The outer periphery of the bottom shell 5 is provided with an annular limiting ring 511, and a C-shaped groove 512 is provided on the inner side of the annular limiting ring 511, and the upper external teeth 401 and the lower external teeth 510 that are connected to each other are matched in the C-shaped groove 512.

[0019] Furthermore, the annular limit ring 511 is respectively provided with a plurality of notches 513 on the upper and lower side walls of the C-shaped groove 512, and the shape and size of the notches 513 match the upper external teeth 401 and the lower external teeth 510. The bottom surface of the annular limit ring 511 is supported on a plurality of pulleys 5a, and the lower edge of the annular limit ring 511 is provided with a shift block 520. The shift block 520 is movably connected to a horizontal cylinder 521 arranged on the tangent of the annular limit ring 511 through a ball head. The horizontal cylinder 521 is mounted on a universal shaft seat 522, and the stroke of the horizontal cylinder 521 is greater than the length of the notch 513; the outer wall of the static tank 4 is provided with a sub-bracket 410, and a linear bearing 411 is installed on the sub-bracket 410. The linear bearing 411 is connected to a plurality of Z-axis lifting guide columns 412, and the sub-bracket 410 is supported on a plurality of Z-axis lifting cylinders 413.

[0020] Furthermore, the bottom shell 5 is hemispherical in shape and is provided with a plurality of pillars 530 inside. The pillars 530 horizontally support a base 531, and the base 531 is installed with a material bracket 6. The material bracket 6 has multiple layers and is docked with the Y-axis slide 3. The elevator 2 is a servo screw elevator 2. The Z-axis travel range and Y-axis travel range of the Y-axis slide 3 match the material bracket 6.

[0021] Furthermore, a lifting platform 201 is mounted on the elevator 2, and a pair of Y-axis brackets 202 are provided on the lifting platform 201, and a Y-axis slider 203 is invertedly provided on the Y-axis bracket 202, and a Y-axis rail 204 is horizontally connected in the Y-axis slider 203, and a material receiving carrier 205 is carried on the Y-axis rail 204, and a support 206 is provided on the bottom surface of the material receiving carrier 205, and a Y-axis rack 207 is horizontally installed on the bottom of the support 206, and the Y-axis rack 207 is meshed with a gear shaft 208 below, and the gear shaft 208 is hoisted on the bottom surface of the lifting platform 201 through a bearing seat 209, and the gear shaft 208 is connected to a drive motor 2080 through a transmission gear set, and a plurality of pulley seats 2a are provided in the extension direction of the Y-axis bracket 202, and the pulley seat 2a is supported under the Y-axis rail 204.

[0022] Furthermore, a pair of Y-axis optical axis slides 210 and a pair of Y-axis racks 211 are provided on the bottom surface of the material receiving carrier 205, a sub-platform 212 is set between the Y-axis optical axis slides 210, an auxiliary motor 213 is provided on the sub-platform 212, and the auxiliary motor 213 is engaged with the Y-axis rack 211 through gear transmission, two groups of guide sleeves 214 are provided on the sub-platform 212, a lifting column 215 is vertically inserted in the guide sleeve 214, a traction bracket 216 is horizontally installed on the lifting column 215, a material positioning pin 217 is provided on the traction bracket 216, a small cylinder 218 is provided on the sub-platform 212, and the small cylinder 218 is supported and connected to the bottom of the traction bracket 216.

[0023] Furthermore, the surface of the material receiving carrier 205 is open and inlaid with a number of fixed pulleys 2b, the edge of the material receiving carrier 205 is provided with a side guard bar 2c, and the side guard bar 2c is provided with a limiting slot 2c1, and backplane brackets 210 are provided on both sides of the lifting platform 201, and an X-axis telescopic cylinder 211 is installed on the backplane bracket 210, and a limiting pin 212 is installed on the X-axis telescopic cylinder 211, and the limiting pin 212 is plugged into the limiting slot 2c1.

[0024] Furthermore, the X-axis ground rail trolley 1 is composed of a ground rail 101 and a mobile trolley 102, a long-distance rack 103 is arranged parallel between the ground rails 101, and the mobile trolley 102 is provided with an on-board motor 104, and the on-board motor 104 transmits the long-distance rack 103 through gear engagement, and the front and rear ends of the mobile trolley 102 are provided with X-axis oil-free bushings 105, and the X-axis oil-free bushings 105 are connected with X-axis guide column springs 106, and the front end of the X-axis guide column springs 106 is installed with an anti-collision guard plate 107.

[0025] Lithium battery production involves a filling process, which requires using a metered container to add electrolyte to the battery. This filling process is typically done by gravity, whereby the electrolyte in the metered container is discharged into the battery via gravity. However, this process creates bubbles, which occupy space and hinder the electrolyte's downward flow. Furthermore, a small amount of electrolyte may remain in the metered container, resulting in the electrolyte filling amount being lower than the designed capacity.

[0026] The lithium battery filling process also involves batch transportation on and off the production line. Existing technologies typically use conveyors and robotic arms to transport non-standard tooling. However, conveyors are unable to handle the final distance of material delivery at the final destination, necessitating the cross-line coordination of robotic arms. Due to their high cost and bulk, robotic arms are difficult to use in confined areas.

[0027] Since the space of the static tank is small, the material bracket 6 installed in the bottom shell is cramped. When the static tank is in the open state, it is difficult to load the batteries in batches onto the material bracket 6. In order to solve this problem, Figure 8 As shown, the robot provides bidirectional switching for battery loading and unloading, enabling both switching between the resting tanks and the loading line. Its straight-in, straight-out handling method not only allows for handling within confined spaces, but also eliminates unnecessary movement during the transfer process, resulting in extremely high transfer efficiency. Traditional six-axis robots, on the other hand, require rotation to achieve this handling action, which is time-consuming and hinders efficient batch transfer of materials.

[0028] The mobile trolley 102 first goes to the discharge end of the upstream equipment to pick up the material. When picking up the material, the X-axis telescopic cylinder 211 retracts to release the retraction control of the material carrier 205. Then, under the transmission of the drive motor 2080, the gear shaft 208 drives the Y-axis rack 207 to move, so that the material carrier 205 extends to the position as shown in the figure. Figure 8 In the state 1 position shown, the X-axis telescopic cylinder 211 is extended to lock the material receiving carrier 205.

[0029] like Figure 7 As shown, auxiliary motor 213 moves to the outermost position of receiving carrier plate 205. At this point, the traction bracket 216 extends beyond the material positioning pin 217, allowing it to hook the material. In this position, the material positioning pin 217 aligns with the pin sleeve directly below the material. The small cylinder 218 then raises the entire traction bracket 216, engaging the material positioning pin 217 with the pin sleeve on the material. Auxiliary motor 213 then rotates back, pulling the material (i.e., the custom loading tray containing batteries) onto receiving carrier plate 205. The numerous fixed pulleys 2b on receiving carrier plate 205 reduce the traction load and accelerate material loading and unloading. Once the material is loaded, the drive motor 2080 pulls the extended receiving carrier plate 205 back to its initial position in the center of elevator 2.

[0030] Next, the mobile trolley 102 on the ground rail 101 moves the material to the idle static tank, and the height is adjusted by the elevator 2 so that the height of the material receiving carrier 205 is consistent with the height of the material bracket 6. Then, as in the above-mentioned material delivery method, the material receiving carrier 205 is switched to the same position as above. Figure 8 The position shown in state 2. The small cylinder 218 descends, unlocks the material, and pushes the material onto the material bracket 6.

[0031] like Figure 3 As shown, the Z-axis lifting cylinder 413 is shortened to make the static tank 4 fall onto the bottom shell 5, and then the horizontal cylinder 521 pushes and pulls the annular limiting ring 511, so that the upper outer teeth 401 and the lower outer teeth 510 enter the gap and rotate to the position shown in FIG. Figure 2 The locked state is shown. In this state, the vacuum pump 9 is used to evacuate the cavity in the tank to a negative pressure state to expel bubbles. After maintaining the pressure for a specified time, nitrogen is injected into the static tank 4 to create a positive pressure environment in the sealed cavity, and the residual electrolyte is pressed into the battery. This reciprocating cycle is repeated multiple times to complete the electrolyte filling.

[0032] In summary, the present invention provides a positive and negative pressure circulation injection device for lithium batteries, which realizes a large-scale rapid shear response through the X-axis ground rail trolley, and with the help of the mutual cooperation between the traction bracket and the material carrier plate, realizes the rapid docking of upstream and downstream through a two-way telescopic method, thereby realizing the large-scale application of the battery injection post-processing process, significantly improving production efficiency and greatly reducing equipment costs.

[0033] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A lithium battery positive and negative pressure circulation injection device, characterized in that: It includes an X-axis ground rail trolley, an elevator, a Y-axis slide, a stationary tank, a bottom shell, a material bracket, an air source pipeline, a booster pump, a vacuum pump, and an air storage tank. The X-axis ground rail trolley is provided with a elevator, the elevator is mounted with a Y-axis slide, a number of stationary tanks are arranged along the X-axis ground rail trolley, the stationary tank is opened downward and covers the bottom shell to form a sealed cavity, the bottom shell is provided with a material bracket in the stationary tank, the Y-axis slide is matched and docked with the material bracket, the sealed cavity is connected to the air source pipeline through a valve, the air source pipeline is respectively connected to the booster pump and the vacuum pump, and the booster pump is connected to the air storage tank.

2. The positive and negative pressure circulation injection equipment for lithium batteries according to claim 1, characterized in that: A first docking end face is provided at the edge of the bottom shell, and a second docking end face is provided at the lower edge of the static tank. The first docking end face and the second docking end face are aligned and matched with each other. A card groove is opened on the first docking end face, and a sealing ring is laid along the card groove on the first docking end face. The sealing ring is fixed in the card groove in a V shape and has an interference fit with the second docking end face.

3. The positive and negative pressure circulation injection equipment for lithium batteries according to claim 1, characterized in that: The outer edge of the lower edge of the static tank is provided with a plurality of upper external teeth arranged at equal intervals, the outer edge of the upper edge of the bottom shell is provided with a plurality of lower external teeth corresponding to the upper external teeth one by one, and the outer periphery of the bottom shell is provided with an annular limiting ring, the inner side of the annular limiting ring is provided with a C-shaped groove, and the C-shaped groove is matched with upper external teeth and lower external teeth that are connected to each other.

4. The positive and negative pressure circulation injection equipment for lithium batteries according to claim 3, characterized in that: The annular limit ring is respectively provided with a plurality of notches on the upper and lower side walls of the C-shaped groove, and the shape and size of the notches match the upper external teeth and the lower external teeth. The bottom surface of the annular limit ring is supported on a plurality of pulleys, and a shift block is provided on the lower edge of the annular limit ring. The shift block is movably connected to a horizontal cylinder arranged on the tangent of the annular limit ring through a ball head. The horizontal cylinder is mounted on a universal shaft seat, and the stroke of the horizontal cylinder is greater than the length of the notch; an auxiliary bracket is provided on the outer wall of the stationary tank, and a linear bearing is installed on the auxiliary bracket. The linear bearing is connected to a plurality of Z-axis lifting guide columns, and the auxiliary bracket is supported on a plurality of Z-axis lifting cylinders.

5. The lithium battery positive and negative pressure circulation injection equipment according to claim 1, characterized in that: The bottom shell is hemispherical in shape and has a number of pillars arranged inside. A bottom support is horizontally supported on the pillars, and a material bracket is installed on the bottom support. The material bracket has multiple layers and is connected to the Y-axis slide. The elevator is a servo screw elevator. The Z-axis travel range and Y-axis travel range of the Y-axis slide match the material bracket.

6. The lithium battery positive and negative pressure circulation injection equipment according to claim 1, characterized in that: A lifting platform is mounted on the lift, and a pair of Y-axis brackets are arranged on the lifting platform. A Y-axis slider is arranged inverted on the Y-axis bracket, and a Y-axis line rail is horizontally inserted in the Y-axis slider. A material receiving carrier plate is carried on the Y-axis line rail, and a support is arranged on the bottom surface of the material receiving carrier plate. A Y-axis rack is horizontally installed on the bottom of the support, and a gear shaft is meshed and connected below the Y-axis rack. The gear shaft is hoisted on the bottom surface of the lifting platform through a bearing seat, and the gear shaft is connected to a driving motor through a transmission gear set. A plurality of pulley seats are arranged in the extension direction of the Y-axis bracket, and the pulley seats are supported under the Y-axis line rail.

7. The positive and negative pressure circulation injection equipment for lithium batteries according to claim 6, characterized in that: A pair of Y-axis optical axis slide rails and a pair of Y-axis gear rails are arranged on the bottom surface of the material receiving carrier plate, a sub-platform is arranged between the Y-axis optical axis slide rails, an auxiliary motor is arranged on the sub-platform, the auxiliary motor is engaged with the Y-axis gear rails through gear transmission, two groups of guide sleeves are arranged on the sub-platform, a lifting column is vertically inserted in the guide sleeve, a traction bracket is horizontally installed on the lifting column, a material positioning pin is arranged on the traction bracket, a small cylinder is arranged on the sub-platform, and the top support of the small cylinder is connected under the traction bracket.

8. The positive and negative pressure circulation injection equipment for lithium batteries according to claim 6, characterized in that: The surface of the material receiving carrier plate is open and inlaid with a plurality of fixed pulleys, the edge of the material receiving carrier plate is provided with side guard bars, and the side guard bars are provided with limiting slots, back plate brackets are provided on both sides of the lifting platform, and an X-axis telescopic cylinder is installed on the back plate bracket, and a limiting pin is installed on the X-axis telescopic cylinder, and the limiting pin is plugged into the limiting slot.

9. The lithium battery positive and negative pressure circulation injection equipment according to claim 1, characterized in that: The X-axis ground rail trolley is composed of a ground rail and a moving trolley, long-distance racks are arranged in parallel between the ground rails, a vehicle-mounted motor is arranged on the moving trolley, and the vehicle-mounted motor drives the long-distance rack through gear meshing, and X-axis oil-free bushings are arranged at the front and rear ends of the moving trolley, an X-axis guide column spring is inserted into the X-axis oil-free bushing, and an anti-collision guard plate is installed at the front end of the X-axis guide column spring.

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