A machining device for hydraulic cylinders

Abstract

This invention discloses a processing device for hydraulic cylinders, including a support base, a lifting drive mechanism, a spraying mechanism, and a drying and blowing mechanism. The lifting drive mechanism is slidably mounted on the support base and includes a sliding sealing cover, a first drive motor, and a suspension hook. The first drive motor is fixedly mounted on the sliding sealing cover, and the top of the suspension hook is fixedly connected to the output shaft of the first drive motor. The spraying mechanism is located below the sliding sealing cover and includes a spraying and drying cylinder, a lifting slide rail, and a spraying component. A lifting and sliding groove is carved in the lifting slide rail, and the spraying component is slidably mounted in the lifting and sliding groove. The drying and blowing mechanism is located at the bottom of the spraying and drying cylinder and includes an extended air guide tube, a negative pressure suction pump, and a delivery air pipe. Through the design of these mechanisms, this invention enables the hydraulic cylinder to be sprayed with paint evenly, preventing missed areas and ensuring the quality and aesthetics of the hydraulic cylinder.

Description

Technical Field

[0001] This invention belongs to the field of hydraulic cylinder processing technology, specifically relating to a processing device for hydraulic cylinders. Background Technology

[0002] Hydraulic cylinders, also known as oil cylinders, are actuators in hydraulic systems. They directly convert the pressure energy of hydraulic oil into linear reciprocating mechanical thrust, offering high force, stable operation, and a simple structure. After assembly, hydraulic cylinders require painting. Currently, painting hydraulic cylinders involves suspending them on a rack, with an operator holding a paint gun and circling the cylinder while spraying paint. This manual painting method is inefficient, produces inconsistent paint quality, and is prone to missed spots and uneven application, affecting the quality and appearance of the hydraulic cylinder. Summary of the Invention

[0003] The purpose of this invention is to provide a processing device for hydraulic cylinders to solve the problems of uneven painting and easy missed painting in the prior art.

[0004] To achieve the above objectives, the present invention provides a processing apparatus for hydraulic cylinders, comprising: a support base, a lifting drive mechanism, a spraying mechanism, and a drying and blowing mechanism;

[0005] The lifting drive mechanism is slidably disposed on the support base. The lifting drive mechanism includes a sliding sealing cover, a first drive motor and a suspension hook. The first drive motor is fixedly installed on the sliding sealing cover, and the top end of the suspension hook is fixedly connected to the output shaft of the first drive motor.

[0006] The spraying mechanism is located below the sliding sealing cover. The spraying mechanism includes a spray drying cylinder, a lifting slide rail, and a spraying component. The lifting slide rail is fixed to the spray drying cylinder. A lifting sliding groove is carved inside the lifting slide rail. The spraying component is slidably disposed in the lifting sliding groove.

[0007] The drying air blowing mechanism is located at the bottom of the spray drying cylinder. The drying air blowing mechanism includes an extended air guide cylinder, a negative pressure suction pump, and a delivery air pipe. The extended air guide cylinder is fixed to the bottom of the spray drying cylinder, the negative pressure suction pump is fixed to the support base, and a delivery air pipe is fixedly connected between the extended air guide cylinder and the negative pressure suction pump.

[0008] In one or more embodiments of the present invention, the support base is provided with a lifting adjustment groove to provide space for the lifting slider to move up and down, thereby enabling the first drive motor and the sliding sealing cover to move up and down, which in turn drives the hydraulic cylinder to move up and down, making it convenient to suspend the hydraulic cylinder on the hook and to move it into the spray drying cylinder. The lifting slider is slidably arranged in the lifting adjustment groove to support the support crossbeam, thereby supporting the sliding sealing cover and the first drive motor and providing conditions for supporting and fixing the hydraulic cylinder.

[0009] In one or more embodiments of the present invention, a pair of lifting cylinders are provided below the lifting slider to control the extension and retraction of the piston rod. Each pair of lifting cylinders is fixedly connected to the lifting slider with a piston rod, which supports the lifting slider and drives its vertical movement. Specifically, the extension and retraction of the piston rod is controlled by activating the lifting cylinders, thereby driving the vertical movement of the lifting slider. After the hydraulic cylinder is suspended on the hook, the lifting slider drives the support crossbeam, the sliding sealing cover, and the hydraulic cylinder to move vertically.

[0010] In one or more embodiments of the present invention, a support crossbeam is fixedly connected to the sliding sealing cover, and the other end of the support crossbeam is fixed to the lifting slider. The sliding sealing cover and the lifting slider are fixedly linked by the support crossbeam, so that the sliding sealing cover can be driven to move up and down when the lifting slider moves up and down.

[0011] A support bracket is fixedly connected between the support crossbeam and the lifting slider to increase the connection between the support crossbeam and the lifting slider, prevent slippage, and thus ensure the stability of the first drive motor and hydraulic cylinder. This prevents the suspended hydraulic cylinder from tilting or shaking, ensuring stable spraying and avoiding unevenness.

[0012] In one or more embodiments of the present invention, a second drive motor is fixedly installed on the lifting slide rail for driving the drive screw to rotate in both directions, providing power for the lifting and moving of the spraying assembly. The second drive motor is fixedly connected to the drive screw, which is threadedly connected to the lifting support box, so that the drive screw can drive the lifting support box to move in both directions when rotating, without driving the lifting support box to rotate, thus playing the role of transmitting power.

[0013] Fixed bearings are fixedly connected to both ends of the drive screw and the lifting slide rail to fix the two ends of the drive screw, so that the drive screw will not tilt or shake, ensuring the stability of the drive screw, and will not affect the rotation of the drive screw, thus not affecting the lifting and moving of the spraying assembly.

[0014] In one or more embodiments of the present invention, the spraying assembly includes: a lifting support box, a threaded connecting pipe, and a paint spray head. The lifting support box is threadedly connected to the drive screw, so that the drive screw can drive the lifting support box to move up and down when it rotates, so that the spraying assembly can move up and down. The lifting support box has a conveying cavity for conveying paint, so that the paint can enter the paint spray head through the conveying cavity and then be sprayed outward.

[0015] Both the threaded connecting pipe and the paint spray head are fixedly connected to the lifting support box, and both the threaded connecting pipe and the paint spray head are connected to the conveying cavity. The threaded connecting pipe can be connected to an external transmission pipe, so that the paint can be transported to the conveying cavity through the external transmission pipe and the threaded connecting pipe, and then passed into the paint spray head and sprayed outward, thereby uniformly spraying the hydraulic cylinder.

[0016] In one or more embodiments of the present invention, a support partition is fixed inside the extended air guide tube to act as a barrier, so that after the gas enters the extended air guide tube, it will first contact the heating rod and then float upward, thereby improving the drying effect of the hydraulic cylinder paint spraying. The support partition is drilled with multiple evenly distributed air guide holes to facilitate the flow of gas, allowing the gas to float upward and thus push the lifting head to move, avoiding blockage.

[0017] In one or more embodiments of the present invention, the bottom of the spray drying cylinder is provided with a plurality of lifting heads for sealing the bottom of the spray drying cylinder to prevent air leakage. The lifting heads are provided with air conveying grooves and recesses. The air conveying grooves are used to allow the spray drying cylinder and the extended air guide tube to communicate with each other when the lifting heads are raised, so that the gas in the extended air guide tube can enter the spray drying cylinder to facilitate rapid drying of the hydraulic cylinder. The recesses are used to facilitate the connection and fixing of the support spring.

[0018] A support spring is fixedly connected between the lifting head and the extended air guide tube. This spring pulls the lifting head back to its original position when no gas is entering or exiting. This allows the upper port of the air delivery channel to be blocked by the bottom of the spray drying cylinder, preventing the spray drying cylinder and the extended air guide tube from communicating with each other. The number of lifting heads is the same as the number of air guide holes to avoid affecting the extension and retraction of the support spring.

[0019] In one or more embodiments of the present invention, a plurality of heating rods are fixedly installed at the bottom of the extended air guide tube to heat the gas entering the extended air guide tube, thereby increasing the temperature of the gas and enabling better drying of the hydraulic cylinder after the gas enters the spray drying cylinder, improving the drying effect and thus improving the production and processing efficiency of the hydraulic cylinder.

[0020] In one or more embodiments of the present invention, the bottom of the extended air guide tube is fixedly provided with a plurality of fixed support legs for supporting and fixing the extended air guide tube and the spray drying tube, so that the hydraulic cylinder painting and drying are not affected and the stability of the device is improved.

[0021] Compared with the prior art, the beneficial effect of the present invention is that, through the setting of the corresponding mechanism, the hydraulic cylinder can be sprayed with paint evenly without any missed spraying, thereby ensuring the quality and appearance of the hydraulic cylinder. Attached Figure Description

[0022] Figure 1 This is a perspective view of a machining apparatus for a hydraulic cylinder according to an embodiment of the present invention;

[0023] Figure 2 for Figure 1 The structural diagram shown at point A in the middle;

[0024] Figure 3 This is a partial structural schematic diagram of a processing device for a hydraulic cylinder according to an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the structure of a spray head in one embodiment of the present invention;

[0026] Figure 5 This is a cross-sectional view of a processing device for a hydraulic cylinder according to an embodiment of the present invention;

[0027] Figure 6 for Figure 5 The structural diagram shown at point B in the middle;

[0028] Figure 7 for Figure 5 The structural diagram shown at point C.

[0029] Explanation of key figure labels:

[0030] 1. Support base; 101. Lifting adjustment groove; 102. Lifting cylinder; 103. Piston push rod; 104. Lifting slider; 2. Lifting drive mechanism; 201. Sliding sealing cover; 202. First drive motor; 203. Support crossbeam; 204. Support inclined frame; 205. Suspension hook; 3. Spraying mechanism; 301. Spray drying cylinder; 302. Lifting slide rail; 303. Second drive motor; 304. Drive screw 305. Lifting support box; 306. Threaded connecting pipe; 307. Spray nozzle; 308. Fixed bearing; 309. Conveying cavity; 4. Drying and blowing mechanism; 401. Extended air guide tube; 402. Negative pressure suction pump; 403. Conveying air pipe; 404. Support partition; 405. Lifting end cap; 406. Conveying air trough; 407. Air guide hole; 408. Support spring; 409. Heating rod; 410. Fixed support leg. Detailed Implementation

[0031] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0032] like Figures 1-7 As shown, a processing device for a hydraulic cylinder according to one embodiment of the present invention includes a support base 1, a lifting drive mechanism 2, a spraying mechanism 3, and a drying and blowing mechanism 4.

[0033] like Figures 1-3 As shown, the lifting drive mechanism 2 is slidably mounted on the support base 1. The lifting drive mechanism 2 includes a sliding sealing cover 201, a first drive motor 202, and a suspension hook 205. The first drive motor 202 is fixedly mounted on the sliding sealing cover 201, and the top end of the suspension hook 205 is fixedly connected to the output shaft of the first drive motor 202. Specifically, by covering the spray drying cylinder 301 with the sliding sealing cover 201, the hydraulic cylinder will not splash paint during the spraying process, protecting the external environment. Moreover, the first drive motor 202 drives the suspension hook 205 to rotate, which in turn drives the hydraulic cylinder suspended on the suspension hook 205 to rotate, facilitating uniform paint spraying on the hydraulic cylinder and avoiding unevenness.

[0034] In addition, a support bearing is fixedly connected between the suspension hook 205 and the sliding sealing cover 201, which makes the rotation of the suspension hook 205 less susceptible to influence, thereby enabling the hydraulic cylinder to rotate stably and preventing tilting or wobbling, thus ensuring stability during painting.

[0035] like Figures 1-4 As shown, the spraying mechanism 3 is located below the sliding sealing cover 201. The spraying mechanism 3 includes a spray drying cylinder 301, a lifting slide rail 302, and a spraying component. The lifting slide rail 302 is fixed to the spray drying cylinder 301, and a lifting sliding groove is carved inside the lifting slide rail 302. The spraying component is slidably disposed in the lifting sliding groove. Specifically, the spray drying cylinder 301 protects the hydraulic cylinder, preventing paint from splashing to the outside and thus reducing cleaning pressure. By lifting and sliding the spraying component within the lifting slide rail 302, the hydraulic cylinder can be uniformly sprayed with paint, thereby ensuring the quality and appearance of the hydraulic cylinder.

[0036] like Figures 1-7As shown, the drying air blowing mechanism 4 is located at the bottom of the spray drying cylinder 301. The drying air blowing mechanism 4 includes an extended air guide cylinder 401, a negative pressure suction pump 402, and a delivery air pipe 403. The extended air guide cylinder 401 is fixed to the bottom of the spray drying cylinder 301, and the negative pressure suction pump 402 is fixed to the support base 1. The delivery air pipe 403 is fixedly connected between the extended air guide cylinder 401 and the negative pressure suction pump 402. Specifically, the negative pressure suction pump 402 draws in gas, which is then delivered to the extended air guide cylinder 401 through the delivery air pipe 403, and then transferred to the spray drying cylinder 301. This facilitates the drying of the hydraulic cylinder after painting, improves the paint drying efficiency, and thus improves the production efficiency of the hydraulic cylinder.

[0037] like Figures 1-5 As shown, a lifting adjustment groove 101 is carved into the support base 1, providing space for the lifting slider 104 to move up and down, thereby enabling the first drive motor 202 and the sliding sealing cover 201 to move up and down, which in turn drives the hydraulic cylinder to move up and down, facilitating the suspension of the hydraulic cylinder on the suspension hook 205. It also facilitates moving the hydraulic cylinder into the spray drying cylinder 301. The lifting slider 104 is slidably disposed in the lifting adjustment groove 101 to support the support crossbeam 203, thereby supporting the sliding sealing cover 201 and the first drive motor 202, providing conditions for supporting and fixing the hydraulic cylinder.

[0038] like Figures 1-5 As shown, a pair of lifting cylinders 102 are provided below the lifting slider 104 to control the extension and retraction of the piston rod 103. The piston rod 103 is fixedly connected to both the lifting cylinders 102 and the lifting slider 104 to support the lifting slider 104 and drive its lifting and lowering movement. Specifically, the extension and retraction of the piston rod 103 is controlled by activating the lifting cylinders 102, thereby driving the lifting slider 104 to move up and down. After the hydraulic cylinder is suspended on the hook 205, the lifting slider 104 drives the support crossbeam 203, the sliding sealing cover 201, and the hydraulic cylinder to move up and down.

[0039] like Figures 1-3 As shown, a support crossbar 203 is fixedly connected to the sliding sealing cover 201. The other end of the support crossbar 203 is fixed to the lifting slider 104. The sliding sealing cover 201 and the lifting slider 104 are fixedly linked by the support crossbar 203, so that the sliding sealing cover 201 can be driven to move up and down when the lifting slider 104 moves up and down.

[0040] Specifically, a support bracket 204 is fixedly connected between the support crossbeam 203 and the lifting slider 104 to increase the connection between the support crossbeam 203 and the lifting slider 104, prevent slippage, and thus ensure the stability of the first drive motor 202 and the hydraulic cylinder, so that the suspended hydraulic cylinder will not tilt or shake, and ensure stable spraying of the hydraulic cylinder, thereby avoiding unevenness.

[0041] like Figures 1-6 As shown, a second drive motor 303 is fixedly installed on the lifting slide rail 302, which drives the drive screw 304 to rotate in both directions, providing power for the lifting and moving of the spraying assembly. The drive screw 304 is fixedly connected to the second drive motor 303, and is threadedly connected to the lifting support box 305 through the drive screw 304. This allows the drive screw 304 to drive the lifting support box 305 to move up and down when it rotates, but it will not drive the lifting support box 305 to rotate, thus playing the role of transmitting power.

[0042] The drive screw 304 is fixedly connected to the lifting slide rail 302 at both ends by fixed bearings 308, which are used to fix the two ends of the drive screw 304 so that the drive screw 304 will not tilt or shake, thus ensuring the stability of the drive screw 304. Moreover, it will not affect the rotation of the drive screw 304, and thus will not affect the lifting and moving of the spraying assembly.

[0043] like Figures 1-6 As shown, the spraying assembly includes a lifting support box 305, a threaded connecting pipe 306, and a spray head 307. The lifting support box 305 is threadedly connected to a drive screw 304, so that when the drive screw 304 rotates, it can drive the lifting support box 305 to move up and down, thus enabling the spraying assembly to move up and down. The lifting support box 305 also has a conveying cavity 309 for conveying paint, allowing the paint to enter the spray head 307 through the conveying cavity 309 and then be sprayed outwards.

[0044] like Figures 1-6 As shown, the threaded connecting pipe 306 and the paint spray head 307 are both fixedly connected to the lifting support box 305, and the threaded connecting pipe 306 and the paint spray head 307 are both connected to the conveying cavity 309. The threaded connecting pipe 306 can be connected to the external transmission pipe, so that the paint can be transported to the conveying cavity 309 through the external transmission pipe and the threaded connecting pipe 306, and then passed into the paint spray head 307 and sprayed outward, thereby uniformly spraying the hydraulic cylinder.

[0045] like Figures 1-7As shown, a support baffle 404 is fixed inside the extended air guide tube 401 to act as a barrier, ensuring that the gas entering the extended air guide tube 401 first contacts the heating rod 409 and then floats upward, thereby improving the drying effect on the hydraulic cylinder paint spraying. Multiple evenly distributed air guide holes 407 are drilled in the support baffle 404 to facilitate gas flow, allowing the gas to float upward and thus push the lifting end cap 405 to move, preventing blockage.

[0046] like Figures 1-7 As shown, the bottom of the spray drying cylinder 301 is provided with multiple lifting heads 405 to seal the bottom of the spray drying cylinder 301 and prevent air leakage. The lifting heads 405 are chiseled with air delivery grooves 406 and recesses. The air delivery grooves 406 allow the spray drying cylinder 301 to connect with the extended air guide tube 401 when the lifting heads 405 are raised, enabling the gas in the extended air guide tube 401 to enter the spray drying cylinder 301 for rapid drying of the hydraulic cylinder. The recesses facilitate the connection and fixing of the support spring 408.

[0047] like Figures 1-7 As shown, a support spring 408 is fixedly connected between the lifting head 405 and the extended air guide tube 401. This support spring 408 is used to pull the lifting head 405 so that when there is no gas entering or exiting, the support spring 408 can pull the lifting head 405 back to its original position. This allows the upper port of the conveying air groove 406 to be blocked by the bottom of the spray drying cylinder 301, preventing the spray drying cylinder 301 and the extended air guide tube 401 from being connected to each other. The number of lifting heads 405 is the same as the number of air guide holes 407, thus avoiding affecting the extension and retraction of the support spring 408.

[0048] like Figures 1-7 As shown, multiple heating rods 409 are fixedly installed at the bottom of the extended air guide tube 401 to heat the gas entering the extended air guide tube 401, thereby increasing the gas temperature. This allows the gas to better dry the hydraulic cylinder after entering the spray drying cylinder 301, improving the drying effect and thus increasing the production efficiency of the hydraulic cylinder. The multiple heating rods 409 are electrically connected to the negative pressure suction pump 402, so that when the negative pressure suction pump 402 is started, the multiple heating rods 409 are also simultaneously powered on, causing them to heat up and thus heating the gas entering the extended air guide tube 401.

[0049] Specifically, the bottom of the extended air guide cylinder 401 is fixedly provided with multiple fixed support legs 410, which are used to support and fix the extended air guide cylinder 401 and the spray drying cylinder 301, so that the hydraulic cylinder painting and drying will not be affected, and the stability of the device will be improved.

[0050] In practical use, the main body of the hydraulic cylinder is first hung on the suspension hook 205, and then a pair of lifting cylinders 102 are started. Through a pair of piston push rods 103, the lifting slider 104 is moved downward, thereby driving the sliding sealing cover 201 to descend through the connected support crossbeam 203, so that the sliding sealing cover 201 descends to stick to the spray drying cylinder 301, achieving the effect of sealing and covering.

[0051] Then, the first drive motor 202 is started, which drives the suspension hook 205 to rotate. The rotation of the suspension hook 205 can drive the suspended hydraulic cylinder to rotate. The center line of the hydraulic cylinder is the same as the center line of the straight pipe at the upper end of the suspension hook 205, so that the hydraulic cylinder will only rotate around its own center line and will not deviate. Before processing, the workers will connect the paint pipe through the threaded connecting pipe 306. The paint is delivered into the lifting support box 305 through the external paint pipe and the threaded connecting pipe 306, and then sprayed outward through the spray nozzle 307 onto the hydraulic cylinder.

[0052] Furthermore, while the paint sprayer head 307 is spraying paint, the second drive motor 303 will also start, driving the drive screw 304 to rotate. The rotation of the drive screw 304 will drive the lifting support box 305 and the paint sprayer head 307 to move up and down. Thus, the forward and reverse rotation of the second drive motor 303 can drive the lifting support box 305 and the paint sprayer head 307 to move up and down, thereby ensuring uniform spraying of the hydraulic cylinder and avoiding unevenness. Moreover, the sliding sealing cover 201 is used to cover the area, which also avoids the risk of paint leakage and protects the external environment.

[0053] After the spraying is completed, the piston push rod 103 is extended by the lifting cylinder 102, and then the sliding block 104 is used to drive the sliding sealing cover 201 to rise a certain distance, so that there is a gap between the sliding sealing cover 201 and the spray drying cylinder 301 to facilitate the discharge of gas. Then the negative pressure suction pump 402 is started to deliver gas into the extended air guide cylinder 401 through the air delivery pipe 403, and the heating rod 409 is energized to make it heat up.

[0054] As the gas passes around the heating rod 409, it is heated, causing the gas temperature to rise. The gas then floats upward through the air guide hole 407. As the amount of gas increases, it gradually pushes the lifting head 405 upward, exposing the air delivery groove 406. At this time, the gas is delivered into the spray drying cylinder 301 through the air delivery groove 406. While floating upward, it also dries the paint on the surface of the hydraulic cylinder, improving the processing efficiency of the hydraulic cylinder. Finally, it is discharged from the top. After drying, the hydraulic cylinder is raised by sliding the sealing cover 201. Then, the operator can remove it from the suspension hook 205 and turn off the negative pressure suction pump 402 to stop supplying air. At this time, the lifting head 405 is lowered and reset by the pull of the support spring 408, so as not to affect the painting of the candidate hydraulic cylinder.

[0055] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0056] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A machining apparatus for hydraulic cylinders, characterized in that, include: Support base; A lifting drive mechanism is slidably mounted on the support base. The lifting drive mechanism includes a sliding sealing cover, a first drive motor, and a suspension hook. The first drive motor is fixedly mounted on the sliding sealing cover, and the top end of the suspension hook is fixedly connected to the output shaft of the first drive motor. A spraying mechanism is located below the sliding sealing cover. The spraying mechanism includes a spray drying cylinder, a lifting slide rail, and a spraying component. The lifting slide rail is fixed to the spray drying cylinder. A lifting sliding groove is carved inside the lifting slide rail. The spraying component is slidably disposed in the lifting sliding groove. A drying air blowing mechanism is located at the bottom of the spray drying cylinder. The drying air blowing mechanism includes an extended air guide cylinder, a negative pressure suction pump, and a delivery air pipe. The extended air guide cylinder is fixed to the bottom of the spray drying cylinder, the negative pressure suction pump is fixed to the support base, and a delivery air pipe is fixedly connected between the extended air guide cylinder and the negative pressure suction pump.

2. The machining apparatus for hydraulic cylinders according to claim 1, characterized in that, The support base has a lifting adjustment groove, and a lifting slider is slidably disposed in the lifting adjustment groove.

3. The processing apparatus for hydraulic cylinders according to claim 2, characterized in that, A pair of lifting cylinders are provided below the lifting slider, and a piston push rod is fixedly connected between the lifting cylinders and the lifting slider.

4. The machining apparatus for hydraulic cylinders according to claim 3, characterized in that, A support crossbeam is fixedly connected to the sliding sealing cover, and the other end of the support crossbeam is fixed to the lifting slider. A support inclined frame is fixedly connected between the support crossbeam and the lifting slider.

5. A machining apparatus for hydraulic cylinders according to claim 1, characterized in that, A second drive motor is fixedly installed on the lifting slide rail, and a drive screw is fixedly connected to the second drive motor. Fixed bearings are fixedly connected between the two ends of the drive screw and the lifting slide rail.

6. A machining apparatus for a hydraulic cylinder according to claim 5, characterized in that, The spraying assembly includes: The lifting support box is threadedly connected to the drive screw, and a conveying cavity is cut into the lifting support box; The threaded connecting pipe and the paint spray head are both fixedly connected to the lifting support box, and the threaded connecting pipe and the paint spray head are both connected to the conveying cavity.

7. A machining apparatus for hydraulic cylinders according to claim 1, characterized in that, The extended air guide tube is fixed with a support partition, and the support partition has multiple evenly distributed air guide holes.

8. A machining apparatus for a hydraulic cylinder according to claim 7, characterized in that, The bottom of the spray drying cylinder is provided with multiple lifting heads. Each lifting head has a conveying air groove and a recess. A support spring is fixedly connected between the lifting head and the extended air guide cylinder. The number of lifting heads is the same as the number of air guide holes.

9. A machining apparatus for a hydraulic cylinder according to claim 8, characterized in that, Multiple heating rods are fixedly installed at the bottom of the extended air guide tube.

10. A machining apparatus for a hydraulic cylinder according to claim 9, characterized in that, The bottom of the extended air guide tube is fixedly equipped with multiple fixed support legs.

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