A device for filling liquid into an automotive suspension part

Abstract

The device for filling liquid into automotive suspension parts provided by this application includes an automatic steel ball feeding part, a lifting system, a transfer and connection part, a liquid injection pipe, a vacuum pipe, a liquid delivery pipe, and a tooling. Among them, the tooling is used to fix the automotive suspension parts on the filling platform. The lifting system is arranged above the tooling. The transfer and connection part is arranged on the lifting system, and the transfer and connection part is of a hollow structure. The top of the liquid injection pipe is connected and communicated with the transfer and connection part, and the liquid injection pipe is located directly above the liquid injection hole of the automotive suspension part. The vacuum pipe is communicated with the transfer and connection part. The input end of the liquid delivery pipe is connected and communicated with the transfer and connection part, and the liquid delivery pipe is used to transport liquid into the transfer and connection part. The automatic steel ball feeding part is arranged on the transfer and connection part, and the automatic steel ball feeding part is used to automatically feed steel balls into the transfer and connection part, so that the steel balls are driven into the automotive suspension part through the liquid injection pipe to seal the liquid injection hole. The device for filling liquid into automotive suspension parts provided by this application can greatly improve the production efficiency of automotive suspension parts.

Description

Technical Field

[0001] The present invention relates to the field of manufacturing automotive suspension parts, and particularly to a device for filling liquid into automotive suspension parts. Background Art

[0002] During the production process of automotive suspension parts, it is necessary to fill liquid into the automotive suspension parts to improve their buffering performance. When filling the liquid, it is necessary to first extract the gas inside the automotive suspension parts to make the inside of the automotive suspension parts in a low-pressure state, and then inject the filling liquid into the automotive suspension parts. After completion, it is necessary to drive a steel ball into the liquid injection hole of the automotive suspension part to seal the liquid injection hole.

[0003] The existing devices for filling liquid into automotive suspension parts usually divide the liquid filling and driving the steel ball for sealing into two steps, which are carried out on two different devices respectively. Therefore, when the liquid filling process of the automotive suspension part is completed, it is necessary to remove the automotive suspension part and fix it to another device for driving the steel ball for sealing, and the steps are cumbersome. As a result, the production efficiency of automotive suspension parts is relatively low. Summary of the Invention

[0004] The purpose of the present invention is to provide a device for filling liquid into automotive suspension parts, so as to solve the technical problem that the traditional liquid filling device needs to divide the liquid filling and driving the steel ball for sealing into two steps and complete them on different devices, resulting in low production efficiency of automotive suspension parts.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is: providing a device for filling liquid into automotive suspension parts, the device for filling liquid into automotive suspension parts includes:

[0006] A tooling for fixing the automotive suspension part on the liquid filling platform so that the liquid injection hole at the bottom of the automotive suspension part faces upward;

[0007] A lifting system arranged above the tooling, and the lifting direction of the lifting system is along the direction of the liquid injection hole of the automotive suspension part;

[0008] A transfer and connection part arranged on the lifting system, and the transfer and connection part is of a hollow structure;

[0009] A liquid injection pipe, the top of which is connected to the transfer and connection part, and the liquid injection pipe is located directly above the liquid injection hole of the automotive suspension part;

[0010] A vacuum pipe communicating with the transfer and connection part;

[0011] A liquid delivery pipe, the input end of which is connected to the transfer and connection part, and the liquid delivery pipe is used for delivering liquid into the transfer and connection part;

[0012] An automatic steel ball feeding unit is provided on the transfer and connection unit. The automatic steel ball feeding unit is used to automatically feed steel balls into the transfer and connection unit, so that the steel balls are injected into the automotive suspension component through the liquid injection pipe to seal the liquid injection hole.

[0013] Valves are provided on both the liquid delivery pipe and the vacuum pipe.

[0014] In one embodiment, the automatic steel ball feeding unit includes:

[0015] A vertical delivery pipe, the bottom of which is embedded in the transfer and connection unit, and the top of the vertical delivery pipe communicates with the outside; a ventilation hole and a steel ball output hole communicating with the inside of the transfer and connection unit are provided at the bottom of the vertical delivery pipe.

[0016] A steel ball delivery pipe, which is inclined, the bottom output end of the steel ball delivery pipe is connected to the vertical delivery pipe, and a number of steel balls are loaded in the steel ball delivery pipe.

[0017] A steel ball transport block, which is slidably arranged in the vertical delivery pipe. An inclined through hole for accommodating one steel ball is provided on the steel ball transport block, and piston structures are arranged at both the upper and lower ends of the steel ball transport block. The piston structures are slidably and sealingly matched with the inner wall of the vertical delivery pipe.

[0018] An elastic member is arranged in the vertical delivery pipe. One end of the elastic member is connected to the vertical delivery pipe, and the other end of the elastic member is connected to the steel ball transport block.

[0019] In one embodiment, a limiting ring is arranged in the vertical delivery pipe. The limiting ring is used to limit the highest position of the steel ball transport block, and when the steel ball transport block is at the highest position, the steel ball delivery pipe communicates with the inclined through hole of the steel ball transport block.

[0020] In one embodiment, the inclination angle of the steel ball delivery pipe is 2° to 4°.

[0021] In one embodiment, the liquid injection pipe includes:

[0022] A liquid injection main pipe, which is a rigid pipe, and the top of the liquid injection main pipe is connected to the transfer and connection unit.

[0023] A liquid injection hose, which is arranged between the liquid injection main pipes.

[0024] A connecting sleeve, both ends of which are fixed to the liquid injection main pipes at both ends of the liquid injection hose.

[0025] In one embodiment, the outer circle of the cross-section of the liquid injection hose is elliptical, so that the wall thickness on the left and right sides of the liquid injection hose is greater than the wall thickness on the front and back sides.

[0026] In one embodiment, a small hole section is provided at the bottom of the liquid injection main pipe, and the inner diameter of the small hole section is the same as the diameter of the steel ball.

[0027] In one embodiment, the tooling clamps and fixes the main spring elastomer of the automotive suspension part.

[0028] One or more of the above technical solutions in the embodiments of the present invention have at least the following technical effects or advantages:

[0029] The device for filling liquid into an automotive suspension part provided by the embodiment of the present invention fixes the automotive suspension part on the liquid filling platform by using tooling, so that the liquid injection hole at the bottom of the automotive suspension part faces upward for easy liquid filling. When filling liquid, first, the lifting system controls the descent of the transfer connection part and the liquid injection pipe arranged on the transfer connection part, so that the bottom of the liquid injection pipe is inserted into the liquid injection hole at the bottom of the automotive suspension part; then, a vacuum tube (one end of the vacuum tube is connected to a vacuum pump) evacuates the transfer connection part and the automotive suspension part to facilitate the subsequent liquid to enter the cavity of the automotive suspension part. When the vacuum degree reaches a predetermined value, the valve on the vacuum tube is closed, and the valve on the liquid supply pipe is opened. The liquid supply pipe starts to convey liquid into the transfer connection part. After the liquid enters the transfer connection part, it enters the automotive suspension part along the liquid injection pipe until the liquid injection is completed, and the valve on the liquid supply pipe is closed. Then, the steel ball automatic feeding part feeds a steel ball into the transfer connection part, and the steel ball enters the liquid injection hole of the automotive suspension part along the liquid injection pipe (the diameter of the steel ball is slightly larger than the diameter of the liquid injection hole. At this time, the valve of the vacuum tube can be opened, and the vacuum tube can be made to convey air pressure into the transfer connection part. Under the action of the air pressure, the steel ball is driven into the liquid injection hole of the automotive suspension part), thereby realizing the sealing of the automotive suspension part. Therefore, the device for filling liquid into an automotive suspension part provided by the embodiment of the present application can complete two steps of liquid filling and driving the steel ball for sealing on one device, without separating the two steps on two devices, greatly improving the production efficiency of the automotive suspension part. Description of the Drawings

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0031] Figure 1 It is a schematic structural diagram of the tooling provided by the embodiment of the present invention;

[0032] Figure 2Structural schematic diagram of the steel ball automatic feeding part and the transfer connection part provided by the embodiment of the present invention;

[0033] Figure 3 , Figure 4 , Figure 5 Structural schematic diagram of the steel ball movement process;

[0034] Figure 6 Cross-sectional view of the injection hose when the internal pressure is normal provided by the embodiment of the present invention;

[0035] Figure 7 Cross-sectional view of the injection hose when the internal pressure is low provided by the embodiment of the present invention.

[0036] Among them, the respective reference numerals are as follows:

[0037] 1, tooling; 2, transfer connection part; 3, injection pipe; 4, vacuum pipe; 5, liquid delivery pipe; 6, steel ball automatic feeding part; 7, automotive suspension part; 8, steel ball; 31, main injection pipe; 32, injection hose; 33, connecting sleeve; 61, vertical conveying pipe; 62, steel ball conveying pipe; 63, steel ball transport block; 64, elastic member. Detailed implementation manners

[0038] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present invention, and should not be construed as a limitation of the present invention.

[0039] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0040] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0041] In the present invention, unless otherwise clearly defined and limited, terms such as "installation", "connection", "linkage", "fixation", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral one; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] Please refer to Figures 1 to 5 , the embodiment of the present application provides a device for filling liquid into an automotive suspension part, including an automatic steel ball feeding part 6, a lifting system, a transfer and connection part 2, a liquid injection pipe 3, a vacuum pipe 4, a liquid delivery pipe 5, and a tooling 1. Among them, the tooling 1 is used to fix the automotive suspension part 7 on the filling platform so that the liquid injection hole at the bottom of the automotive suspension part 7 faces upward. The lifting system is arranged above the tooling 1, and the lifting direction of the lifting system is along the direction of the liquid injection hole of the automotive suspension part 7. The transfer and connection part 2 is arranged on the lifting system, and the transfer and connection part 2 is of a hollow structure. The top of the liquid injection pipe 3 is communicated with the transfer and connection part 2, and the liquid injection pipe 3 is located directly above the liquid injection hole of the automotive suspension part 7. The vacuum pipe 4 is communicated with the transfer and connection part 2. The input end of the liquid delivery pipe 5 is communicated with the transfer and connection part 2, and the liquid delivery pipe 5 is used to convey liquid into the transfer and connection part 2. The automatic steel ball feeding part 6 is arranged on the transfer and connection part 2, and the automatic steel ball feeding part 6 is used to automatically feed steel balls 8 into the transfer and connection part 2 so that the steel balls 8 are driven into the automotive suspension part 7 through the liquid injection pipe 3 to seal the liquid injection hole. Valves are arranged on both the liquid delivery pipe 5 and the vacuum pipe 4.

[0043] The device for filling the automotive suspension part 7 provided in this embodiment fixes the automotive suspension part 7 on the filling platform by using the tooling 1, so that the liquid injection hole at the bottom of the automotive suspension part 7 faces upward for easy liquid filling. When filling the liquid, first, the lifting system controls the descent of the transfer connection part 2 and the liquid injection pipe 3 arranged on the transfer connection part 2, so that the bottom of the liquid injection pipe 3 is inserted into the liquid injection hole at the bottom of the automotive suspension part 7; then, the vacuum tube 4 (one end of the vacuum tube 4 is connected to a vacuum pump) evacuates the transfer connection part 2 and the automotive suspension part 7 to facilitate the subsequent entry of the liquid into the cavity of the automotive suspension part 7. When the vacuum degree reaches the predetermined value, the valve on the vacuum tube 4 closes, and the valve on the liquid supply pipe 5 is opened. The liquid supply pipe 5 starts to transport the liquid into the transfer connection part 2. After the liquid enters the transfer connection part 2, it enters the automotive suspension part 7 along the liquid injection pipe 3 until the liquid injection is completed, and the valve on the liquid supply pipe 5 closes. Then, the steel ball automatic feeding part 6 feeds a steel ball 8 into the transfer connection part 2, and the steel ball 8 enters the liquid injection hole of the automotive suspension part 7 along the liquid injection pipe 3 (the diameter of the steel ball 8 is slightly larger than the diameter of the liquid injection hole. At this time, the valve of the vacuum tube 4 can be opened, and the vacuum tube 4 can be made to transport air pressure into the transfer connection part 2. Under the action of the air pressure, the steel ball 8 is driven into the liquid injection hole of the automotive suspension part 7. The hole wall of the liquid injection hole of the automotive suspension part 7 has a certain elasticity. Therefore, when the steel ball 8 with a diameter larger than the inner diameter of the liquid injection hole enters the liquid injection hole, the steel ball 8 will cause the liquid injection hole to deform and seal the liquid injection hole), thereby realizing the sealing of the automotive suspension part 7. Therefore, the device for filling the automotive suspension part 7 provided in the embodiment of the present application can complete two steps of liquid filling and driving the steel ball 8 for sealing on one device, without separating the two steps on two devices, greatly improving the production efficiency of the automotive suspension part 7.

[0044] In one embodiment, the steel ball automatic feeding part 6 includes an elastic member 64 (such as a spring, an elastic rope, etc.), a steel ball conveying pipe 62, a steel ball transport block 63, and a vertical conveying pipe 61. The bottom of the vertical conveying pipe 61 is embedded in the transfer connection part 2, and the top of the vertical conveying pipe 61 communicates with the outside; a ventilation hole communicating with the inside of the transfer connection part 2 and a steel ball 8 output hole are opened at the bottom of the vertical conveying pipe 61. The steel ball conveying pipe 62 is inclined, the bottom output end of the steel ball conveying pipe 62 is connected to the vertical conveying pipe 61, and a number of steel balls 8 are loaded in the steel ball conveying pipe 62. The steel ball transport block 63 is slidably arranged in the vertical conveying pipe 61, an inclined through hole for accommodating one steel ball 8 is opened on the steel ball transport block 63, and piston structures are arranged at both the upper and lower ends of the steel ball transport block 63, and the piston structures are slidably and sealingly matched with the inner wall of the vertical conveying pipe 61. The elastic member 64 is arranged in the vertical conveying pipe 61, one end of the elastic member 64 is connected to the vertical conveying pipe 61, and the other end of the elastic member 64 is connected to the steel ball transport block 63.

[0045] In the initial state, as Figure 2As shown, when it is necessary to fill the automotive suspension part 7 with liquid, first, the valve on the vacuum tube 4 is opened (the valve on the liquid delivery tube 5 is default closed). Under the action of the vacuum pump at one end of the vacuum tube 4, the transfer connection part 2 and the inner cavity of the automotive suspension part 7 are evacuated, causing the air pressure between the transfer connection part 2 and the inner cavity of the automotive suspension part 7 to drop, facilitating the injection of liquid. Due to the drop in air pressure in the transfer connection part 2, the steel ball transport block 63 slides downward against the elastic force of the elastic part 64 (the air pressure above the upper end of the steel ball transport block 63 is higher than the air pressure below the lower end of the steel ball transport block 63) until the steel ball transport block 63 moves to the position as shown in Figure 3 At this time, the steel ball 8 in the inclined through-hole of the steel ball transport block 63 can enter the intermediate connection part through the steel ball 8 output hole. A screen valve can be set at the position where the intermediate connection part is connected to the liquid injection tube 3 (the screen valve can prevent the steel ball 8 from entering the automotive suspension part 7, but will not prevent the liquid from entering the automotive suspension part 7), so that the steel ball 8 entering the intermediate connection part is blocked by the screen valve. Until the liquid delivery tube 5 finishes inputting liquid into the automotive suspension part 7, the screen valve opens, allowing the steel ball 8 to enter the automotive suspension part 7 and seal the automotive suspension part 7. Since the liquid delivery tube 5 inputs liquid into the intermediate connection part, the air pressure value in the intermediate connection part slowly rises and recovers, reducing the pressure difference between the upper and lower ends of the steel ball transport block 63. Then, the steel ball transport block 63 moves upward under the elastic force of the elastic part 64 until it reaches the topmost position. At this time, due to the inclined setting of the steel ball delivery tube 62, the steel ball 8 in the steel ball delivery tube 62 will automatically enter the inclined through-hole of the steel ball transport block 63 under its own gravity (as shown in Figure 5 ), facilitating the automatic delivery of the steel ball 8 to the next automotive suspension part 7.

[0046] Optionally, the length of the piston at the upper end of the steel ball transport block 63 can be increased, and the distance between the connection position of the steel ball delivery tube 62 and the vertical delivery tube 61 and the steel ball 8 output hole of the vertical delivery tube 61 is made greater than the diameter of the inclined through-hole. Thus, it is ensured that when the steel ball transport block 63 slides downward, the steel ball delivery tube 62 is never connected to the intermediate connection part, and the air pressure state in the intermediate connection part is not damaged by the steel ball delivery tube 62. By increasing the length of the piston at the upper end of the steel ball transport block 63, when the steel ball transport block 63 moves to the lowermost position, the piston at the upper end of the steel ball transport block 63 can still block the steel ball 8 in the steel ball delivery tube 62, preventing the steel ball 8 from entering the vertical delivery tube 61 above the steel ball transport block 63.

[0047] In one embodiment, a limiting ring is provided inside the vertical conveying pipe 61. The limiting ring is used to limit the highest position of the steel ball transport block 63, and when the steel ball transport block 63 is at the highest position, the steel ball conveying pipe 62 is communicated with the inclined through hole of the steel ball transport block 63. By providing the limiting ring, after the steel ball transport block 63 is reset to the highest position, the inclined through hole can be kept in communication with the steel ball conveying pipe 62, ensuring that the steel balls 8 in the steel ball conveying pipe 62 have enough time to enter the inclined through hole of the steel ball transport block 63.

[0048] In one embodiment, the inclination angle of the steel ball conveying pipe 62 is 2° to 4°. By setting the inclination angle of the steel ball conveying pipe 62 to 2° to 4°, while enabling the steel balls 8 in the steel ball conveying pipe 62 to automatically enter the inclined through hole of the steel ball transport block 63, it can also reduce the resistance of the steel balls 8 in the steel ball conveying pipe 62 to the downward movement of the steel ball transport block 63 (if the inclination angle of the steel ball conveying pipe 62 is too large, the steel balls 8 in the steel ball conveying pipe 62 will exert too much pressure on the steel ball transport block 63, resulting in difficult movement of the steel ball transport block 63).

[0049] In one embodiment, the liquid injection pipe 3 includes a connecting sleeve 33, a liquid injection hose 32 (which can be made of rubber material), and a liquid injection main pipe 31. The liquid injection main pipe 31 is a rigid pipe, and the top of the liquid injection main pipe 31 is communicated with the transfer communication part 2. The liquid injection hose 32 is arranged between the liquid injection main pipes 31. The two ends of the connecting sleeve 33 are fixed on the liquid injection main pipes 31 at both ends of the liquid injection hose 32. By providing the liquid injection hose 32 on the liquid injection pipe 3, when the air pressure in the transfer communication part 2 is relatively low, the liquid injection hose 32 contracts, causing the inner diameter of the liquid injection hose 32 to decrease. Therefore, when the steel balls 8 enter the transfer communication part 2 from the steel ball automatic feeding part 6 (at this time, the transfer communication part 2 is in a low-pressure state), the contracted and deformed liquid injection hose 32 can prevent the steel balls 8 from directly entering the automotive suspension 7 along the liquid injection pipe 3. After the automotive suspension 7 is filled with liquid, at this time, the air pressure value in the transfer communication part 2 rises and recovers, and at the same time, the originally contracted and deformed liquid injection hose 32 also returns to its original shape, so that the steel balls 8 can smoothly pass through the liquid injection hose 32 and enter the automotive suspension 7 for sealing. Therefore, by providing the liquid injection hose 32, the timing of the release of the steel balls 8 can be automatically controlled, avoiding the situation where the steel balls 8 enter the automotive suspension 7 and hinder the entry of the liquid before the liquid injection into the automotive suspension 7 is completed, replacing the sieve-type valve in the transfer communication part 2 and simplifying the overall structure.

[0050] At the same time, by providing the connecting sleeve 33, the liquid injection hose 32 will not affect the insertion of the liquid injection pipe 3 into the liquid injection hole of the automotive suspension 7 driven by the lifting device.

[0051] As Figures 6 - 7As shown, in one embodiment, the outer circle of the cross-section of the liquid injection hose 32 is elliptical, so that the wall thickness on the left and right sides of the liquid injection hose 32 is greater than the wall thickness on the front and back sides. When the air pressure value in the intermediate communication part 2 is relatively low, at this time, the front and back sides of the liquid injection hose 32 bend and contract inward. At this time, the blocking steel ball 8 is blocked from passing through the liquid injection hose 32, and the liquid injection hose 32 after shrinkage deformation can still transport the liquid through the annular regions on the left and right sides, realizing the blocking of the steel ball 8 while not blocking the liquid from entering the vehicle suspension member 7.

[0052] In one embodiment, a small hole section is provided at the bottom of the liquid injection main pipe 31, and the inner diameter of the small hole section is the same as the diameter of the steel ball 8. By providing a small hole section at the bottom of the liquid injection main pipe 31, when the steel ball 8 falls into the small hole section, the steel ball 8 fits closely with the small hole section. At this time, as long as the vacuum tube 4 inputs air pressure into the intermediate communication part, the steel ball 8 can be accelerated into the liquid injection hole of the vehicle suspension member 7 under the action of the air pressure, so that the liquid injection hole is expanded and deformed, and the liquid injection hole is sealed.

[0053] In one embodiment, the tooling 1 clamps and fixes the main spring elastic body of the vehicle suspension member 7. The main spring elastic body part of the vehicle suspension member 7 is thicker than other positions. Therefore, when the tooling 1 clamps it, the vehicle suspension member 7 is not easily damaged.

[0054] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An apparatus for filling liquid into an automotive suspension part, characterized in that The device for filling liquid into an automotive suspension part includes: A tooling for fixing the automotive suspension part on a liquid filling platform, so that the liquid injection hole at the bottom of the automotive suspension part faces upward; A lifting system arranged above the tooling, and the lifting direction of the lifting system is along the direction of the liquid injection hole of the automotive suspension part; A transfer and connection part arranged on the lifting system, and the transfer and connection part is of a hollow structure; A liquid injection pipe, the top of which is connected to the transfer and connection part, and the liquid injection pipe is located directly above the liquid injection hole of the automotive suspension part; A vacuum pipe communicating with the transfer and connection part; A liquid delivery pipe, the input end of which is connected to the transfer and connection part, and the liquid delivery pipe is used for delivering liquid into the transfer and connection part; A steel ball automatic feeding part arranged on the transfer and connection part, and the steel ball automatic feeding part is used for automatically feeding steel balls into the transfer and connection part, so that the steel balls are driven into the automotive suspension part through the liquid injection pipe to seal the liquid injection hole; Valves are arranged on both the liquid delivery pipe and the vacuum pipe; The steel ball automatic feeding part includes: A vertical delivery pipe, the bottom of which is embedded in the transfer and connection part, and the top of the vertical delivery pipe communicates with the outside; An air vent hole and a steel ball output hole communicating with the inside of the transfer and connection part are arranged at the bottom of the vertical delivery pipe; A steel ball delivery pipe, which is inclined, the bottom output end of which is connected to the vertical delivery pipe, and a number of steel balls are loaded in the steel ball delivery pipe; A steel ball transport block slidably arranged in the vertical delivery pipe, an inclined through hole for accommodating one steel ball is arranged on the steel ball transport block, and piston structures are arranged at both the upper and lower ends of the steel ball transport block, and the piston structures are slidably and sealingly matched with the pipe wall of the vertical delivery pipe; An elastic member arranged in the vertical delivery pipe, one end of which is connected to the vertical delivery pipe, and the other end of which is connected to the steel ball transport block; The liquid injection pipe includes: A liquid injection main pipe, which is a rigid pipe, and the top of the liquid injection main pipe is connected to the transfer and connection part; A liquid injection hose arranged between the liquid injection main pipes; A connecting sleeve, both ends of which are fixed to the liquid injection main pipes at both ends of the liquid injection hose; The outer circle of the cross-section of the liquid injection hose is elliptical, so that the wall thickness on the left and right sides of the liquid injection hose is greater than the wall thickness on the front and back sides.

2. The device for filling liquid into an automotive suspension part according to claim 1, wherein: A limit ring is arranged in the vertical delivery pipe, and the limit ring is used to limit the highest position of the steel ball transport block, and when the steel ball transport block is in the highest position, the steel ball delivery pipe is communicated with the inclined through hole of the steel ball transport block.

3. The device for filling liquid into an automotive suspension part according to claim 1, wherein: The inclination angle of the steel ball delivery pipe is 2° - 4°.

4. The device for filling liquid into an automotive suspension part according to claim 1, wherein: A small hole section is provided at the bottom of the main liquid injection pipe, and the inner diameter of the small hole section is the same as the diameter of the steel ball.

5. The device for filling liquid into an automotive suspension part according to claim 1, wherein: The tooling clamps and fixes the main spring elastomer of the automotive suspension part.

Images