A machining device for a hydraulic cylinder

Abstract

The application discloses a processing device for a hydraulic cylinder, relates to the technical field of polishing equipment, and comprises a driving rotation assembly and two sliding polishing assemblies. The sliding polishing assembly comprises a sliding bearing plate, a support frame slidingly positioned on the sliding bearing plate, a horizontally arranged telescopic rod fixed on the support frame, a U-shaped frame body, a V-shaped bearing plate, three or more guide columns fixed on the V-shaped bearing plate, a first reel, a second reel and a sandpaper belt. The V-shaped bearing plate is fixed on the open end of the U-shaped frame body, and the opening faces the cylinder body. The first reel and the second reel are both positioned on the U-shaped frame body. The two ends of the sandpaper belt are respectively wound and positioned on the first reel and the second reel, sequentially pass through all the guide columns, and are stretched into a V shape at the opening position of the V-shaped bearing plate under the guidance of the guide columns. The processing device for the hydraulic cylinder has high applicability, and the uniformity and stability of polishing are both excellent.

Description

Technical Field

[0001] This invention relates to the field of grinding equipment technology, and more particularly to a processing device for hydraulic cylinders. Background Technology

[0002] In the manufacturing process of hydraulic cylinders, seamless steel pipes are typically cut into cylindrical bodies, which are then ground before proceeding to the next processing step. Grinding the end edges of the cylinder ensures flatness and precision, facilitating subsequent welding and installation. Grinding removes burrs and uneven areas generated during cutting, resulting in smoother and more even end edges, thus improving the hydraulic cylinder's sealing and stability. Furthermore, grinding reduces sharp edges at the cylinder ends, preventing injuries to operators and enhancing the overall aesthetics of the hydraulic cylinder.

[0003] In the existing technology, when grinding cylinders, existing grinding devices generally suffer from poor processing applicability due to their own structural limitations. They cannot use a single grinding device to handle various hydraulic cylinders of different specifications (different lengths and inner and outer diameters). Furthermore, the grinding effect of existing grinding devices deteriorates drastically as grinding consumables are consumed and worn, resulting in significant differences in the finished product quality of hydraulic cylinders ground successively and poor uniformity, i.e., poor stability of the grinding effect.

[0004] Therefore, there is a need for a processing device for hydraulic cylinders that is highly adaptable and has excellent grinding uniformity and stability. Summary of the Invention

[0005] This application provides a processing device for hydraulic cylinders, which solves the technical problems of existing processing devices for hydraulic cylinders during grinding operations, such as poor applicability to different hydraulic cylinders due to limitations in their own structure, poor grinding uniformity, deterioration of finished product quality with the consumption of grinding consumables, and poor stability of finished product quality. It realizes a processing device for hydraulic cylinders with strong applicability and excellent grinding uniformity and stability.

[0006] This application provides a processing device for a hydraulic cylinder, including a drive rotation assembly for driving the cylinder to rotate around its own axis, and two symmetrically arranged sliding grinding assemblies located at the two ends of the cylinder respectively.

[0007] The sliding grinding assembly includes a sliding bearing plate that acts as a guide rail, a support frame that is slidably positioned on the sliding bearing plate, a horizontally arranged telescopic rod with a built-in compression spring and fixed on the support frame, an I-shaped frame, a V-shaped bearing plate, three or more guide posts fixed on the V-shaped bearing plate, a first roll, a second roll, and sandpaper tape.

[0008] The U-shaped frame body is a plate body with a U-shaped cross-section, the opening facing the end of the cylinder body, and is fixed on the horizontally arranged telescopic rod;

[0009] The V-shaped bearing plate is a rigid plate body with an overall V shape, the number is two, arranged longitudinally, and is fixed at the open end of the U-shaped frame body, the opening facing the cylinder body;

[0010] Both the first drum and the second drum are positioned on the U-shaped frame body;

[0011] Both ends of the sandpaper belt are respectively wound and positioned on the first drum and the second drum, sequentially bypassing all the guide posts, and are stretched into a V shape at the opening position of the V-shaped bearing plate under the guidance of the guide posts.

[0012] Preferably, it further includes a bearing bracket, an arc-shaped channel plate and a lifting block assembly;

[0013] The arc-shaped channel plate is a long strip-shaped rigid plate body, arranged horizontally, and is fixed on the bearing bracket, serving to convey and guide the movement of the cylinder body;

[0014] A groove is provided along the length direction of the top of the arc-shaped channel plate, and the longitudinal section of the groove is D-shaped; a plurality of guiding rotating wheels are provided at the bottom of the groove;

[0015] Two or more block storage grooves are further provided on the arc-shaped channel plate;

[0016] The lifting block assembly is used to lift the cylinder body to be polished so as to facilitate the polishing.

[0017] Preferably, the driving rotating assembly is used to squeeze the cylinder body and drive the lifted cylinder body to rotate, and the main body is a cylindrical rubber wheel.

[0018] The lifting block body is a rigid strip-shaped block body, approximately crescent-shaped with an upward opening in its normal state, and is placed in the block storage groove;

[0019] The cylindrical rotating wheel is a cylindrical wheel body, and the number of cylindrical rotating wheels on one lifting block body is multiple;

[0020] The lifting assembly is used to lift the lifting block body and the cylinder body thereon.

[0021] Preferably, the driving rotating assembly is used to squeeze the cylinder body and drive the lifted cylinder body to rotate, and the main body is a cylindrical rubber wheel.

[0022] Preferably, it also includes a material distribution and blocking assembly for controlling the position of the cylinder on the processing device for the hydraulic cylinder. The main body of the material distribution and blocking assembly is a telescopic rod structure, which blocks the rolling and movement of the cylinder by extending in time, thereby controlling the orderly processing of the cylinder. A top material rod is also fixed on the support bracket or the ground. The top material rod is a horizontally arranged electric telescopic rod located on one side of the arc-shaped channel plate. When extended, it pushes the polished cylinder down the arc-shaped channel plate and into the unloading plate.

[0023] Preferably, a sandpaper belt, a first roll, and a second roll form a group, and a sliding sanding assembly is provided with two groups, which are arranged one above the other and symmetrical to each other;

[0024] The two ends of the sandpaper tape are respectively wound and positioned on the first and second rolls of the same group;

[0025] The V-shaped bearing plate has two guide posts at the concave corner, one above the other, with a spacing of less than 5 mm between them.

[0026] Two sandpaper strips are joined together in a V-shape at the opening of the V-shaped support plate, and the distance between the two sandpaper strips at the concave corner of the V-shaped support plate is less than 3 mm.

[0027] Preferably, it also includes an expansion rack and expansion guide posts;

[0028] The extension frame is a longitudinally arranged rigid plate, fixed to the top of the V-shaped support plate;

[0029] The expansion guide post is a horizontally arranged cylinder, fixed on the expansion frame, with its axis being the same as that of the guide post and located directly above the top guide post of the V-shaped support plate.

[0030] After the sandpaper strip passes around the extended guide post, it contacts the guide post at the top of the V-shaped support plate and is stretched between the two to form a vertical strip.

[0031] Preferably, the sliding grinding assembly has one first roll and one second roll, and two sandpaper strips.

[0032] The U-shaped frame is fixed with multiple reversing columns for guiding the sandpaper tape, and the reversing columns are smooth cylinders.

[0033] The two sandpaper strips are the first strip and the second strip, respectively;

[0034] Both ends of the first and second belts are respectively wound and positioned on the first and second drums;

[0035] The first and second belts are arranged in a V-shape at the opening of the V-shaped bearing plate, guided by the reversing column and the guide column.

[0036] The V-shaped support plate has two guide posts at its concave corner, one above the other, with a spacing of less than 5 mm between them.

[0037] Preferably, it also includes a sliding collar;

[0038] The guide column has a hollow structure and contains a built-in magnet assembly, which is a combination of multiple electromagnets arranged in a row and is powered on and off under the control of the control unit.

[0039] The sliding collar is an iron tube with smooth edges and corners, which is fitted onto the guide post and slides along the length of the guide post;

[0040] The built-in magnet assembly can change the position of the sliding collar using magnetic force;

[0041] During the polishing process, the presence of the sliding collar causes the wear points of the sandpaper belt to be relatively concentrated. By changing the position of the sliding collar, the sandpaper belt can be reused multiple times, thereby extending its service life.

[0042] Preferably, the V-shaped support plate is further fixed with an air blowing cleaning component, which includes a built-in nozzle. The built-in nozzle blows air towards the sandpaper belt near the V-shaped support plate to clean it, and the air comes from an air pump or the factory air circuit system.

[0043] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0044] By using a V-shaped block to guide the strip of sandpaper to abut against and move the end of a cylinder cut from a seamless steel pipe, while simultaneously controlling the cylinder to rotate around its own axis to perform the grinding operation, the stability of the grinding effect is improved while ensuring its applicability. This effectively solves the technical problems of existing hydraulic cylinder processing devices, which suffer from poor applicability to different hydraulic cylinders due to their own structural limitations, poor grinding uniformity, deterioration of finished product quality with the consumption of grinding consumables, and poor stability of finished product quality. Thus, a hydraulic cylinder processing device with strong applicability and excellent grinding uniformity and stability is realized. Attached Figure Description

[0045] Figure 1 This is a schematic diagram of the overall structure of the machining device used for hydraulic cylinders;

[0046] Figure 2 This is a schematic diagram of the external structure of a machining device used for hydraulic cylinders.

[0047] Figure 3 This is a schematic diagram showing the positional relationship between the arc-shaped channel plate and the sliding grinding assembly;

[0048] Figure 4 This is a schematic diagram of the arc-shaped channel plate.

[0049] Figure 5 This is a schematic diagram showing the layout of the U-shaped frame and its accessories;

[0050] Figure 6 A simplified structural diagram of the U-shaped frame and its accessories;

[0051] Figure 7 This is a schematic diagram showing the positional relationship between the first and second rolls;

[0052] Figure 8 This is a schematic diagram showing the positional relationship between the extension frame and the V-shaped support plate;

[0053] Figure 9 This is a schematic diagram showing the positional relationship between the reversing column and the U-shaped frame.

[0054] Figure 10 This is a schematic diagram showing the positional relationship between the guide post and the sliding collar;

[0055] Figure 11 A schematic diagram showing the positional relationship of multiple sliding collars as guide posts;

[0056] Figure 12 A simplified diagram of the internal structure of the guide column;

[0057] Figure 13 This is a schematic diagram showing the layout of the air-blowing cleaning components.

[0058] In the picture:

[0059] Support bracket 100, arc-shaped channel plate 200, guide rotating wheel 210, block storage groove 220, feeding plate 230, unloading plate 240, material distribution and blocking assembly 250, first blocking body 251, second blocking body 252, third blocking body 253, sliding guide plate 254, support body 255, lifting block body 310, cylindrical rotating wheel 320, lifting assembly 330, support frame 410, contact wheel 420, sliding support plate 510, support Frame 520, telescopic column 521, horizontal frame 522, horizontal telescopic rod 530, C-shaped frame 540, V-shaped bearing plate 541, connecting plate 542, guide column 543, sliding collar 544, built-in magnet assembly 545, first drum 550, second drum 560, reversing column 570, sandpaper belt 580, first belt body 581, second belt body 582, extension frame 590, extension guide column 591, built-in nozzle 610, external nozzle 620. Detailed Implementation

[0060] To facilitate understanding of the present invention, a more complete description of this application will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the invention. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to enable a more thorough and complete understanding of the disclosure of the present invention.

[0061] It should be noted that the terms "vertical," "horizontal," "up," "down," "left," "right," and similar expressions used in this article are for illustrative purposes only and do not represent the only possible implementation.

[0062] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the description of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items; hereinafter, for convenience of description, "cylinder" is used to refer to "a cylinder cut from a seamless steel pipe".

[0063] Example 1

[0064] like Figures 1 to 6 As shown, the processing device for hydraulic cylinders in this application includes a support bracket 100, an arc-shaped channel plate 200, a lifting block assembly, a drive rotation assembly, a sliding grinding assembly, a power assembly, and a control unit.

[0065] The bearing support 100 is a rigid plate, rigid rod, or frame structure, fixed to the ground, and serves to support other components of the processing device used for hydraulic cylinders.

[0066] The arc-shaped channel plate 200 is a long, rigid plate, horizontally arranged and fixed on the support bracket 100, serving to guide the movement of the cylinder. A groove is provided at the top of the arc-shaped channel plate 200 along its length, with a D-shaped longitudinal section. Multiple guide wheels 210 are provided at the bottom of the groove. Each guide wheel 210 is a funnel-shaped wheel, horizontally arranged, with its axis perpendicular to the length of the groove. The guide wheels 210 are rotatably connected to the groove around their own axis and directly contact the cylinder during use. Some or all of the guide wheels 210 rotate under the drive of the power component. When the guide wheels 210 rotate, friction causes the cylinder on them to slide along the length of the arc-shaped channel plate 200.

[0067] The arc-shaped channel plate 200 is also provided with two or more block storage slots 220 for accommodating the lifting blocks 310. The block storage slots 220 correspond one-to-one with the lifting blocks 310, and the height of the lifting blocks 310 is less than the depth of the block storage slots 220. The presence of the block storage slots 220 divides the grooves on the arc-shaped channel plate 200 into multiple segments.

[0068] A feeding plate 230 for placing the cut cylinder into the arc-shaped channel plate 200 is fixed on one side near one end, with most of the volume of the feeding plate 230 located above the arc-shaped channel plate 200; a discharging plate 240 for discharging the polished cylinder off the arc-shaped channel plate 200 is fixed on one side near the other end, with most of the volume of the discharging plate 240 located below the arc-shaped channel plate 200; both the feeding plate 230 and the discharging plate 240 are inclined rigid plates that guide the cylinder to roll.

[0069] The support bracket 100 or the ground is also fixed with a material distribution and blocking assembly 250 for controlling the position of the cylinder on the processing device for the hydraulic cylinder. The main body of the material distribution and blocking assembly 250 is a telescopic rod structure, which blocks the rolling and movement of the cylinder by extending in time, thereby controlling the orderly processing of the cylinder. The support bracket 100 or the ground is also fixed with a top material rod, which is a horizontally arranged electric telescopic rod located on one side of the arc-shaped channel plate 200. When extended, it pushes the polished cylinder down the arc-shaped channel plate 200 and into the unloading plate 240.

[0070] Furthermore, the material distribution and blocking assembly 250 includes a first blocking body 251, a second blocking body 252, and a third blocking body 253. The first blocking body 251 is a longitudinally arranged electric telescopic rod located at the top of the connection between the feeding plate 230 and the arc-shaped channel plate 200. When extended, it prevents the cylinder on the feeding plate 230 from rolling into the groove on the arc-shaped channel plate 200. The second blocking body 252 is a longitudinally arranged electric telescopic rod located directly above the arc-shaped channel plate 200 near the middle. It is used to extend in time to block the cylinder, thereby ensuring that there is only one cylinder on the lifting block assembly at any given time. The third blocking body 253 is located on the side of the arc-shaped channel plate 200 without the unloading plate 240. It is a transversely arranged electric telescopic rod located near the end of the arc-shaped channel plate 200. When extended, it hinders the cylinder from moving forward, thereby positioning the cylinder to be ground.

[0071] Preferably, the third baffle 253 also functions as a top material rod. The bottom of the third baffle 253 is provided with a sliding guide plate 254 and a support body 255. The sliding guide plate 254 is a rigid rod with a guide rail, fixed to the ground, and its length direction is the same as the length direction of the arc-shaped channel plate 200. The support body 255 is a longitudinally arranged rigid column, with its top fixed on the third baffle 253 and its bottom slidably positioned on the sliding guide plate 254. It slides under the coordinated control of the power component and the control unit. Before grinding, the third baffle 253 serves as a limit. After grinding, the third baffle 253 is controlled to retract and slide, and then it extends to push down the ground cylinder.

[0072] The lifting block assembly is used to lift the cylinder to be polished so that polishing can be carried out, and includes a lifting block 310, a cylindrical rotating wheel 320 and a lifting assembly 330.

[0073] The lifting block 310 is a rigid strip-shaped block, approximately crescent-shaped with its opening facing upwards. The top surface is curved, and when flattened, it becomes rectangular. The outline of the top edge is similar to the outline of the groove on the curved channel plate 200 near the lifting block 310. The lifting block 310 is normally placed in the block storage slot 220, with its width direction being the same as the length direction of the curved channel plate 200, and spatially located below the groove on the curved channel plate 200.

[0074] The cylindrical rotating wheel 320 is a cylindrical wheel body that rotates around its own axis and is connected to the supporting block 310. It is in direct contact with the side wall of the cylinder being ground. There are multiple cylindrical rotating wheels 320 on a supporting block 310. The axial direction of the cylindrical rotating wheel 320 is the same as the length direction of the arc-shaped channel plate 200.

[0075] The lifting assembly 330 is used to lift the lifting block 310 and the cylinder on it, so that the cylinder on the lifting block 310 directly contacts the contact wheel 420, thereby facilitating the transmission of power. The lifting assembly 330 has a longitudinally arranged telescopic rod structure, which extends and retracts under the coordinated action of the control unit and the power assembly. The bottom is fixed on the ground or the support bracket 100, and the top is fixed on the lifting block 310. When extended, it lifts the lifting block 310.

[0076] The drive rotation assembly is used to squeeze the cylinder and drive the lifted cylinder to rotate, including a support frame 410 and an abutment wheel 420; the support frame 410 is used to support and fix the abutment wheel 420, and is a plate-shaped, rod-shaped or frame structure; the abutment wheel 420 is a cylindrical rubber wheel that rotates under the coordinated control of the control unit and the power assembly, and is arranged laterally with its axis being the same as the length direction of the arc-shaped channel plate 200; the abutment wheel 420 is located above the lifting block 310; after the cylinder on the lifting block 310 is lifted, the abutment wheel 420 abuts against the lifted cylinder.

[0077] like Figure 5 and Figure 6 As shown, there are two sliding grinding components, which are symmetrically arranged and used to grind both ends of the cylinder body, including a sliding bearing plate 510, a support frame 520, a horizontal telescopic rod 530, a C-shaped frame 540, a V-shaped bearing plate 541, a guide column 543, a first drum 550, a second drum 560, and a sandpaper belt 580;

[0078] The sliding bearing plate 510 is a horizontally arranged rigid plate, fixed on the side of the arc-shaped channel plate 200 away from the unloading plate 240 and away from the feeding plate 230. Its length direction is the same as the length direction of the arc-shaped channel plate 200, and it serves as a guide rail.

[0079] The support frame 520 is an L-shaped rod that is slidably positioned on the sliding bearing plate 510, and serves as a load-bearing and connecting element.

[0080] Furthermore, the support frame 520 includes a telescopic column 521 and a transverse frame 522. The telescopic column 521 is a longitudinally arranged electric telescopic column that slides along the length direction of the sliding bearing plate 510 under the coordinated control of the control unit and the power component. The transverse frame 522 is a transversely arranged rigid rod with its length direction being the same as the width direction of the arc-shaped channel plate 200, and is fixed to the top of the telescopic column 521.

[0081] The horizontal telescopic rod 530 is a telescopic rod that is arranged horizontally and has a built-in compression spring. When compressed, the internal compression spring stores elastic potential energy and also plays a buffering role. The horizontal telescopic rod 530 is fixed on the horizontal frame 522 and its length direction is the same as the length direction of the arc-shaped channel plate 200.

[0082] The C-shaped frame 540 is a plate with a cross-section in the shape of the character C, arranged horizontally with the opening facing the end of the cylinder, and the non-open end fixed to the end of the horizontal telescopic rod 530; the C-shaped frame 540 serves to support and fix the V-shaped support plate 541, the first drum 550 and the second drum 560.

[0083] The V-shaped support plate 541 is a rigid plate with an overall V-shape. There are two of them, which serve to support the guide column 543. They are arranged longitudinally and fixed to the open end of the U-shaped frame 540. The opening of the V-shaped support plate 541 faces the cylinder.

[0084] The guide post 543 is a smooth-walled cylinder, arranged laterally, with its two ends fixed to the sides of two V-shaped support plates 541, and there are three or more of them. It is used to guide the sandpaper belt 580 to slide and make the sandpaper belt 580 stretch into a V-shape near the opening of the V-shaped support plate 541 so as to adapt to different sizes of cylinders. The fixing points of the guide post 543 are located near the two convex corners and one concave corner of the V-shaped support plate 541. There is at least one guide post 543 near each of the two convex corners and one concave corner.

[0085] The first roll 550 and the second roll 560 are both positioned on the side wall of the U-shaped frame 540 and are roll structures. They rotate under the coordinated control of the power component and the control unit, thereby winding and releasing the sandpaper belt 580.

[0086] The sandpaper strip 580 is a strip of sandpaper, with both ends wound and positioned on the first roll 550 and the second roll 560 respectively, and it remains taut during sanding. The sandpaper strip 580 passes around all the guide posts 543 in sequence, and is stretched into a V-shape at the opening of the V-shaped support plate 541 under the guidance of the guide posts 543. During sanding, the sandpaper strip 580 stretched into a V-shape is closer to the end of the cylinder than the opening of the V-shaped support plate 541.

[0087] Preferably, in order to ensure the stability of the V-shaped support plate 541, one or more connecting plates 542 are fixed between the V-shaped support plates 541 to provide support. The connecting plates 542 are rigid plates.

[0088] Preferably, the sliding bearing plates 510 of the two sliding grinding components are an integral structure.

[0089] The power assembly is used to provide power for the operation of various components of the processing device for hydraulic cylinders in this application, and the control unit plays the role of controlling the coordinated operation of various components of the processing device for hydraulic cylinders. Both are existing technologies and will not be described in detail here.

[0090] Preferably, the control unit is a combination of a programmable logic controller and control buttons.

[0091] When the processing device for hydraulic cylinders in this application embodiment is used:

[0092] 1. First, place the multiple cylinders that need to be polished into the feeding plate 230;

[0093] 2. Then control the first baffle 251 to retract, so that one of the cylinders slides into the groove on the arc-shaped channel plate 200;

[0094] 3. Control the rotating guide wheel 210 to rotate and drive the cylinder forward; then control the first stop 251 to put in another cylinder; control the second stop 252 to extend and limit the second cylinder; at the same time control the third stop 253 to extend, block and position the first cylinder.

[0095] 5. Control the lifting block assembly to lift the first inserted cylinder so that it contacts the contact wheel 420;

[0096] 6. Control the rotation of the contact wheel 420 to drive the cylinder it contacts to rotate;

[0097] 7. Control the sliding grinding assembly to operate and move, so that the sandpaper belt 580, taut in a V-shape, abuts against the end edge of the rotating cylinder; at the same time, control the first roll 550 and the second roll 560 to rotate, so that the sandpaper belt 580 moves continuously; the sandpaper belt 580 grinds the end edge of the cylinder during its movement.

[0098] 8. Control the first drum 550 and the second drum 560 to rotate in opposite directions for secondary grinding of the ends of the drum body;

[0099] 9. Reset the sliding grinding assembly and the lifting block assembly;

[0100] 10. Push the polished cylinder into the unloading plate 240.

[0101] Preferably, the grinding force is adjustable during grinding (adjusted by controlling the position of the V-shaped support plate 541, i.e., the compression of the horizontal telescopic rod 530); before grinding, the position of each component and the preset movement mode are adjusted according to the specifications of the cylinder to be ground; controlling the forward and reverse rotation of the first roll 550 and the second roll 560 during grinding helps to save costs and extend the service life of the sandpaper belt 580.

[0102] The technical solutions described in the embodiments of this application have at least the following technical effects or advantages:

[0103] This invention solves the technical problems of existing hydraulic cylinder processing devices, which suffer from poor applicability to different hydraulic cylinders due to their own structural limitations, poor grinding uniformity, deterioration of finished product quality with the consumption of grinding consumables, and poor stability of finished product quality. It realizes a hydraulic cylinder processing device with strong applicability and excellent grinding uniformity and stability.

[0104] Example 2

[0105] To further improve the applicability of the processing device for hydraulic cylinders in this application, making it suitable for thinner-walled cylinders, and to avoid the guide post 543 located near the concave corner of the V-shaped bearing plate 541 affecting the grinding process; and to further optimize the grinding effect and finished product quality, making the grinding of the cylinder edge more delicate and smooth; such as Figure 7 As shown, this embodiment of the application optimizes and improves the layout of the guide column 543 based on the above embodiment, and adds a first roll 550, a second roll 560 and a sandpaper strip 580.

[0106] A sandpaper strip 580, a first roll 550, and a second roll 560 form a group; the two groups are arranged one above the other and are symmetrical to each other.

[0107] The two ends of the sandpaper tape 580 are respectively wound and positioned on the first roll 550 and the second roll 560 of the same group;

[0108] The V-shaped bearing plate 541 has two guide posts 543 at its concave corner, one above the other, with a spacing of less than 5 mm between them.

[0109] The 580 grit sandpaper belt remains taut during sanding.

[0110] Two sandpaper strips 580 are spliced ​​together in a V-shape at the opening of the V-shaped support plate 541, and the distance between the two sandpaper strips 580 at the concave corner of the V-shaped support plate 541 is less than 3 mm.

[0111] During polishing, two sandpaper strips move in opposite directions or at an angle to polish the edges and corners of the cylinder.

[0112] Example 3

[0113] To further optimize the sanding effect, further avoid defects such as burrs, and thus further improve the quality of the finished product, this application embodiment adds an extension frame 590 and an extension guide post 591 to the above embodiment. The sandpaper belt 580 is set in a vertical position to optimize the sanding effect. Specifically:

[0114] like Figure 8 As shown, the extension frame 590 is a longitudinally arranged rigid plate, fixed to the top of the V-shaped support plate 541;

[0115] The expansion guide post 591 is a horizontally arranged cylinder, fixed on the expansion frame 590, with its axial direction being the same as that of the guide post 543 and located directly above the topmost guide post 543 of the V-shaped support plate 541.

[0116] After the sandpaper tape 580 passes around the extension guide post 591, it contacts the guide post 543 at the top of the V-shaped support plate 541 and is stretched between the two to form a vertical tape.

[0117] After sanding with a V-shaped sandpaper belt 580, the sliding sanding component is moved so that the vertically positioned sandpaper belt 580 below the extension guide post 591 comes into contact with the end of the cylinder and sands the end of the cylinder. Finally, the V-shaped sandpaper belt 580 is used again to sand the edge of the end of the cylinder to reduce the residue on the cylinder.

[0118] Example 4

[0119] In order to reduce costs and decrease the probability of damage to the machining apparatus used in this application for hydraulic cylinders, such as Figure 9 As shown, the sliding grinding assembly has one first roll 550 and one second roll 560, and two sandpaper belts 580; the C-shaped frame 540 is fixed with multiple reversing columns 570 for guiding the sandpaper belts 580, and the reversing columns 570 are smooth cylinders.

[0120] For ease of description, the two sandpaper strips 580 are defined as the first strip 581 and the second strip 582. The two ends of the first strip 581 and the second strip 582 are respectively wound and positioned on the first spool 550 and the second spool 560. Under the guidance of the reversing column 570 and the guide column 543, the first strip 581 and the second strip 582 are arranged in a V-shape at the opening of the V-shaped bearing plate 541.

[0121] The V-shaped bearing plate 541 has two guide posts 543 at its concave corner, one above the other, with a spacing of less than 5 mm between them.

[0122] The first belt 581 and the second belt 582 are always kept taut during polishing;

[0123] The first belt 581 and the second belt 582 are spliced ​​together in a V-shape at the opening of the V-shaped support plate 541. The distance between the first belt 581 and the second belt 582 at the concave corner of the V-shaped support plate 541 is less than 3 mm. During grinding, the first belt 581 and the second belt 582 move towards or away from each other to grind the edges of the cylinder.

[0124] Example 5

[0125] To further extend the service life of the sandpaper belt 580, improve its utilization rate while ensuring its robustness (if it is too narrow, it is prone to breakage during use), and reduce the usage cost of the sandpaper belt 580, this application embodiment optimizes and improves the structure of the guide post 543 based on the above embodiment, and adds a sliding collar 544, specifically:

[0126] like Figures 10 to 12 As shown, the guide post 543 has a hollow structure and contains a built-in magnet assembly 545. The built-in magnet assembly 545 is a combination of multiple electromagnets arranged in a row, which are powered on and off under the control of the control unit.

[0127] The sliding collar 544 is an iron tube with smooth edges and corners. It is sleeved on the guide post 543 and slides along the length of the guide post 543. The built-in magnet group 545 can change the position of the sliding collar 544 by magnetic force.

[0128] During the polishing process, the presence of the sliding collar 544 causes the wear points of the sandpaper belt 580 to be relatively concentrated. By changing the position of the sliding collar 544, the sandpaper belt 580 can be reused multiple times, thereby extending its service life.

[0129] Preferably, a guide post 543 is provided with multiple sliding collars 544.

[0130] Example 6

[0131] To reduce the maintenance frequency of the machining device used in the hydraulic cylinder, ensure the smooth movement of the sandpaper belt 580, and achieve automatic dust removal, such as... Figure 13 As shown, an air-blowing cleaning assembly is also fixed on the V-shaped support plate 541. The air-blowing cleaning assembly includes a built-in nozzle 610, which blows air towards the sandpaper belt 580 near the V-shaped support plate 541 for cleaning. The air comes from an air pump or the factory air circuit system.

[0132] Preferably, when performing air cleaning, the sandpaper belt should be slack at 580 degrees first.

[0133] Preferably, during air cleaning, the slack of the sandpaper belt 580 and the position of the sliding collar 544 are continuously changed, so that the air flow direction is continuously changed and the cleaning effect is optimized.

[0134] Preferably, the air-blowing cleaning assembly further includes an external nozzle 620, which blows air toward the polished cylinder after polishing to clean it.

[0135] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A machining apparatus for a hydraulic cylinder, comprising a drive rotation assembly for driving a cylinder body to rotate about its own axis, characterized in that: It also includes two symmetrically arranged sliding grinding components located at both ends of the cylinder; The sliding grinding assembly includes a sliding support plate (510), a support frame (520) slidably positioned on the sliding support plate (510), a horizontally arranged telescopic rod with a built-in compression spring and fixed on the support frame (520) (530), a C-shaped frame (540), a V-shaped support plate (541), three or more guide posts (543) fixed on the V-shaped support plate (541), a first roll (550), a second roll (560), and a sandpaper belt (580); The C-shaped frame (540) is a plate with a cross-section in the shape of the character C, with the opening facing the end of the cylinder, and is fixed to the horizontal telescopic rod (530); The V-shaped support plate (541) is a rigid plate with an overall V-shape. There are two of them, which are arranged longitudinally and fixed to the open end of the U-shaped frame (540), with the opening facing the cylinder. The first roll (550) and the second roll (560) are both positioned on the U-shaped frame (540); The sandpaper strip (580) is wound and positioned on the first roll (550) and the second roll (560) at both ends, and passes around all the guide posts (543) in sequence. Under the guidance of the guide posts (543), it is stretched into a V shape at the opening of the V-shaped support plate (541). The sliding grinding assembly has one first roll (550) and one second roll (560), and two sandpaper strips (580). The U-shaped frame (540) is fixed with multiple reversing columns (570) for guiding the sandpaper tape (580) direction. The reversing columns (570) are smooth cylinders. The two sandpaper strips (580) are the first strip body (581) and the second strip body (582) respectively; Both ends of the first belt (581) and the second belt (582) are respectively wound and positioned on the first spool (550) and the second spool (560); The first belt (581) and the second belt (582) are arranged in a V-shape at the opening position of the V-shaped bearing plate (541) under the guidance of the reversing column (570) and the guide column (543); The V-shaped bearing plate (541) has two guide posts (543) at the concave corner position, one above the other, with a distance of less than 5 mm between them; It also includes a sliding collar (544); The guide post (543) is a hollow structure with a built-in magnet assembly (545) inside. The built-in magnet assembly (545) is a combination of multiple electromagnets arranged in a row, which are powered on and off under the control of the control unit. The sliding collar (544) is an iron tube with smooth edges and corners. It is sleeved on the guide post (543) and slides along the length of the guide post (543). The built-in magnet assembly (545) can change the position of the sliding collar (544) by magnetic force; During the polishing process, the presence of the sliding collar (544) causes the wear points of the sandpaper belt (580) to be relatively concentrated. By changing the position of the sliding collar (544), the sandpaper belt (580) can be reused multiple times, thereby extending its service life.

2. The machining apparatus for hydraulic cylinders as described in claim 1, characterized in that: It also includes a support bracket (100), an arc-shaped channel plate (200), and a lifting block assembly; The arc-shaped channel plate (200) is a long strip of rigid plate, arranged horizontally and fixed on the support bracket (100), which serves to guide the movement of the conveying cylinder; The top of the arc-shaped channel plate (200) has a groove along its own length, and the longitudinal section of the groove is D-shaped; the bottom of the groove is provided with multiple guide wheels (210); The arc-shaped channel plate (200) is also provided with two or more block storage slots (220); The lifting block assembly is used to lift the cylinder that needs to be polished so that the polishing can be carried out.

3. The machining apparatus for hydraulic cylinders as described in claim 2, characterized in that: The lifting block assembly includes a lifting block body (310), a cylindrical rotating wheel (320), and a lifting assembly (330); The lifting block (310) is a rigid strip-shaped block, which is approximately crescent-shaped with the opening facing upwards. Under normal conditions, it is placed in the support block storage slot (220). The cylindrical rotating wheel (320) is a cylindrical wheel body, and there are multiple cylindrical rotating wheels (320) on a lifting block (310); The lifting assembly (330) is used to lift the support block (310) and the cylinder on it.

4. The machining apparatus for hydraulic cylinders as described in claim 3, characterized in that: The drive rotation assembly is used to squeeze the cylinder and drive the lifted cylinder to rotate; the main body is a cylindrical rubber wheel.

5. The machining apparatus for hydraulic cylinders as described in any one of claims 1 to 4, characterized in that: It also includes a material distribution and blocking assembly (250) for controlling the position of the cylinder on the processing device for the hydraulic cylinder. The main body of the material distribution and blocking assembly (250) is a telescopic rod structure, which blocks the rolling and movement of the cylinder by extending in time, thereby controlling the orderly processing of the cylinder. A top material rod is also fixed on the support bracket (100) or the ground. The top material rod is a horizontally arranged electric telescopic rod located on one side of the arc-shaped channel plate (200). When extended, it pushes the polished cylinder down the arc-shaped channel plate (200) and into the unloading plate body (240).

6. The machining apparatus for hydraulic cylinders as described in any one of claims 1 to 4, characterized in that: A sandpaper strip (580) is grouped with a first roll (550) and a second roll (560). A sliding sanding assembly is provided with two sets, which are arranged one above the other and symmetrical to each other. The two ends of the sandpaper strip (580) are respectively wound and positioned on the first roll (550) and the second roll (560) of the same group; The V-shaped bearing plate (541) has two guide posts (543) at the concave corner position, one above the other, with a distance of less than 5 mm between them; Two sandpaper strips (580) are joined together in a V-shape at the opening of the V-shaped support plate (541), and the distance between the two sandpaper strips (580) at the concave corner of the V-shaped support plate (541) is less than 3 mm.

7. The machining apparatus for hydraulic cylinders as described in claim 6, characterized in that: It also includes an extension frame (590) and an extension guide column (591); The extension frame (590) is a longitudinally arranged rigid plate, fixed to the top of the V-shaped support plate (541); The expansion guide post (591) is a horizontally arranged cylinder, fixed on the expansion frame (590), with its axis being the same as that of the guide post (543) and located directly above the top guide post (543) of the V-shaped support plate (541). After the sandpaper strip (580) passes around the extension guide post (591), it contacts the guide post (543) at the top of the V-shaped support plate (541) and is stretched between the two to form a vertical strip.

8. The machining apparatus for hydraulic cylinders as described in claim 1, characterized in that: An air-blowing cleaning assembly is also fixed on the V-shaped support plate (541). The air-blowing cleaning assembly includes a built-in nozzle (610). The built-in nozzle (610) blows air towards the sandpaper strip (580) near the V-shaped support plate (541) for cleaning. The air comes from an air pump or the factory air circuit system.

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