An automatic oil stain cleaning mechanism for CNC bending machines

Abstract

This utility model discloses an automatic oil stain cleaning mechanism for a CNC bending machine, relating to the field of bending machine maintenance technology. It includes a bending machine frame body, with a hydraulic telescopic cylinder fixedly installed at the top center of the frame body. A fixing component is fixed to the outer circumferential surface of the hydraulic telescopic cylinder, and a driving component is provided on the outer circumferential surface of the fixing component. A cleaning component is located below the driving component. This utility model, through a composite structure of a cleaning block and cleaning cotton, can simultaneously scrape and absorb surface oil stains during the reciprocating motion of the piston rod, effectively preventing oil stains from adsorbing dust and metal debris to form an abrasive mixture. The elastic scraping of the cleaning block and the efficient adsorption of the cleaning cotton, combined with the adaptive adjustment function of the compression spring, ensure a tight fit between the cleaning block and the piston rod. Even if the piston rod has radial runout or wear, it can ensure no oil stains remain, thereby reducing the abrasive mixture and greatly reducing the wear of the seals.

Description

Technical Field

[0001] This utility model relates to the field of bending machine maintenance technology, and in particular to an automatic oil stain cleaning mechanism for CNC bending machines. Background Technology

[0002] In the field of metal processing, bending machines are key equipment for bending and forming metal sheets. The performance of the hydraulic cylinder, the core actuator, plays a decisive role in the processing accuracy and equipment stability. The surface condition of the hydraulic cylinder telescopic rod, as a key component for transmitting hydraulic power, directly affects the reliability and service life of the entire hydraulic system. In actual production, oil stains inevitably adhere to the surface of the telescopic rod. If these oil stains are not cleaned in time, they will have many negative impacts on the operation of the equipment.

[0003] Furthermore, existing patent publication number CN216420715U discloses a CNC bending machine with waste residue cleaning function, including a bending machine body, a base, a bending template, and a cleaning mechanism. The bending machine body is installed above the base, and the bending template is located below the bending component of the bending machine body and installed above the base. A bending groove is formed above the bending template. The cleaning mechanism is located on the base, and the cleaning end of the cleaning mechanism is placed in the bending groove. A waste residue discharge hole is provided at one end of the bending groove, and a waste residue cleaning groove corresponding to the waste residue discharge hole is provided on the base, with a magnetic door on one side of the waste residue cleaning groove. A movable component is provided inside the base, and the movable component is connected to the cleaning mechanism. This utility model can clean and collect waste residue during each processing cycle for easy cleaning, thereby avoiding the impact on equipment accuracy and bringing great convenience to the user.

[0004] Most existing bending machine cleaning systems focus on cleaning the bending grooves. However, after prolonged use, oil stains on the surface of the bending machine can also affect its operation, especially on the hydraulic telescopic cylinders used in bending machines. Oil stains on the piston rod surface easily attract dust and metal shavings, forming an abrasive mixture. During the reciprocating motion of the telescopic rod, this mixture accelerates the wear of the seals, leading to seal failure, hydraulic oil leakage, resource waste, environmental pollution, and even equipment failure and safety accidents. At the same time, oil stains on the telescopic rod surface can mix into the hydraulic system during equipment operation, altering the physical and chemical properties of the hydraulic oil, reducing its lubrication and oxidation resistance, and accelerating aging and deterioration. Deteriorated hydraulic oil increases friction and heat generation in system components, affecting equipment operation and processing accuracy.

[0005] Therefore, it is necessary to invent an automatic oil stain cleaning mechanism for CNC bending machines to solve the above problems. Utility Model Content

[0006] The purpose of this utility model is to provide an automatic oil stain cleaning mechanism for CNC bending machines to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an automatic oil stain cleaning mechanism for a CNC bending machine, comprising a bending machine frame body, a hydraulic telescopic cylinder fixedly installed at the top center of the bending machine frame body, a fixing component fixedly provided on the outer peripheral surface of the hydraulic telescopic cylinder, a driving component provided on the outer peripheral surface of the fixing component, and a cleaning component provided below the driving component;

[0008] The cleaning assembly includes a cleaning block for cleaning the outer peripheral surface of the telescopic end of a hydraulic telescopic cylinder. A vertical groove is provided in the middle of the cleaning block, and an installation strip is fixedly and movably inserted into the vertical groove. A cleaning cotton for collecting oil stains is glued to one side of the installation strip, and a top plate is fixedly connected to the top of the installation strip.

[0009] A fixing plate is fixedly connected to one side of the cleaning block, and a limiting post is symmetrically fixedly connected to one side of the fixing plate. A second vertical plate is fixedly connected to the ends of the two limiting posts. The first vertical plate is movably passed through the two limiting posts. A compression spring is sleeved between the two limiting posts, with its two ends respectively abutting against the first vertical plate and the fixing plate. A screw is threadedly connected to the middle of the second vertical plate, and one end of the screw is rotatably connected to the first vertical plate.

[0010] Preferably, the fixing assembly includes two fixing rings sleeved on the outer peripheral surface of the hydraulic telescopic cylinder, the two fixing rings being fixed together by bolts, and a plurality of vertical rods being fixedly connected circumferentially at equal intervals to the bottom of each of the two fixing rings, with limit rings fixedly connected to the bottom of the plurality of vertical rods.

[0011] Preferably, the outer peripheral surfaces of the two limiting rings are provided with sliding grooves, and a slider is slidably connected in the sliding groove. Both ends of the slider are fixedly installed with pulleys that are rotatably connected to the upper and lower ends of the sliding groove. A first mounting plate is fixedly connected to the outer side of the pulley.

[0012] Preferably, the bottom of both limiting rings is provided with equidistant toothed grooves in an annular shape.

[0013] Preferably, the drive assembly includes a second mounting plate fixedly connected to the first mounting plate. The second mounting plate has a rectangular groove inside. An electric push rod is fixedly installed at the end of the rectangular groove. The telescopic end of the electric push rod is fixedly connected to a first right-angle plate. One end of the first right-angle plate is fixedly connected to a first vertical plate.

[0014] Preferably, a drive motor is fixedly installed at the bottom of the second mounting plate, and a drive rod is fixedly connected to the output end of the drive motor. The drive rod movably passes through a limiting plate fixedly connected to the second mounting plate, and a gear that meshes with a toothed groove is fixedly connected to one end of the drive rod.

[0015] Preferably, a second right-angle plate is fixedly installed at one top end of the second mounting plate, and a support wheel that is rotatably connected to the top of the fixing ring is fixedly installed at the bottom of one end of the second right-angle plate.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. Through the composite structure of the cleaning block and cleaning cotton, surface oil stains can be scraped and absorbed simultaneously during the reciprocating motion of the piston rod. This effectively prevents oil stains from attracting dust and metal shavings to form an abrasive mixture. The elastic scraping of the cleaning block and the efficient adsorption of the cleaning cotton, combined with the adaptive adjustment function of the compression spring, ensure that the cleaning block and the piston rod fit tightly. Even if there is radial runout or wear on the piston rod, oil stains will not remain, thereby reducing the abrasive mixture. This greatly reduces the wear of the seals, lowers the risk of hydraulic oil leakage, extends the service life of the seals, avoids equipment downtime and safety hazards caused by seal failure, and reduces equipment maintenance costs.

[0018] 2. The circular motion of the cleaning block, combined with the low-friction drive of the pulley, can clean the piston rod surface in all directions without dead angles, effectively blocking the contamination path of hydraulic oil, maintaining the lubrication and anti-oxidation performance of hydraulic oil, reducing friction between hydraulic system components, reducing system heat generation, stabilizing equipment processing accuracy, extending the service life of core components such as hydraulic cylinders, and ensuring the long-term stable operation of the bending machine. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0020] Figure 2 This is a structural schematic diagram of the fixing component, the driving component, and the cleaning component of this utility model.

[0021] Figure 3 This is a schematic diagram of the structure of the fixing component of this utility model.

[0022] Figure 4 This is a schematic diagram of the structure of the drive component of this utility model.

[0023] Figure 5 This is a schematic diagram of the cleaning component of this utility model.

[0024] In the diagram: 1. Main body of the bending machine frame; 2. Hydraulic telescopic cylinder; 3. Fixing assembly; 301. Fixing ring; 302. Vertical rod; 303. Limiting ring; 304. Slide groove; 305. Slider; 306. Pulley; 307. First mounting plate; 308. Toothed groove; 4. Drive assembly; 401. Second mounting plate; 402. Rectangular groove; 403. Electric push rod; 404. First right-angle plate; 405. Drive 406. Motor; 407. Limiting plate; 408. Drive rod; 409. Gear; 410. Second right-angle plate; 410. Support wheel; 5. Cleaning assembly; 501. First vertical plate; 502. Limiting post; 503. Fixing plate; 504. Compression spring; 505. Second vertical plate; 5050. Screw; 506. Cleaning block; 507. Vertical groove; 508. Mounting strip; 509. Cleaning cotton; 510. Top plate. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] This utility model provides, for example Figures 1-5 The automatic oil stain cleaning mechanism for a CNC bending machine shown includes a bending machine frame body 1. A hydraulic telescopic cylinder 2 is fixedly installed at the top center of the bending machine frame body 1. A fixing component 3 is fixed on the outer peripheral surface of the hydraulic telescopic cylinder 2. A drive component 4 is set on the outer peripheral surface of the fixing component 3. A cleaning component 5 is set below the drive component 4. The bending machine frame body 1 serves as the basic support structure of the entire equipment, providing a mounting carrier for the hydraulic telescopic cylinder 2, the fixing component 3, the drive component 4, and the cleaning component 5, ensuring the relative position stability of each component during operation, and enabling the entire cleaning device to operate in coordination with the bending machine. The hydraulic telescopic cylinder 2 is the power source for the bending machine to bend the sheet metal. The fixing component 3, the drive component 4, and the cleaning component 5 are arranged around the hydraulic telescopic cylinder 2. The fixing component 3 is used to fix the relevant components of the cleaning device, the drive component 4 provides the motion power, and the cleaning component 5 cleans the telescopic end of the hydraulic telescopic cylinder 2.

[0027] The cleaning component 5 includes a cleaning block 506 for cleaning the outer peripheral surface of the telescopic end of the hydraulic telescopic cylinder 2. A vertical groove 507 is formed in the middle of the cleaning block 506, and an installation strip 508 is fixedly and movably inserted into the groove 507. A cleaning cotton 509 for collecting oil stains is adhered to one side of the installation strip 508. A top plate 510 is fixedly connected to the top of the installation strip 508. The cleaning block 506 directly contacts the telescopic end of the hydraulic telescopic cylinder 2 for cleaning its surface. The design of the vertical groove 507 and the installation strip 508 allows for flexible installation and replacement of the cleaning cotton 509, facilitating rapid replacement after the cleaning cotton 509 becomes saturated with oil stains, ensuring continuous cleaning effectiveness. The cleaning cotton 509 utilizes its own adsorption properties to collect oil stains from the surface of the telescopic end of the hydraulic telescopic cylinder 2, preventing oil stains from dripping and contaminating the workbench or guide rails. The top plate 510 serves to fix the installation strip 508, ensuring that the installation strip 508 remains stable during cleaning and does not detach from the vertical groove 507 due to vibration or other factors.

[0028] It should be noted that the cleaning block 506 is made of nitrile rubber, which has excellent oil resistance and can be used for a long time in a hydraulic oil environment without swelling or performance degradation; at the same time, it has good wear resistance and elasticity, can fit tightly to the surface of the telescopic end, effectively scrape off oil stains, and can also adapt to the slight jumping and wear of the telescopic end, extending the service life of the cleaning block 506.

[0029] A fixing plate 503 is fixedly connected to one side of the cleaning block 506. Limiting posts 502 are symmetrically fixedly connected to one side of the fixing plate 503. A second vertical plate 505 is fixedly connected to the ends of both limiting posts 502. A first vertical plate 501 movably passes through the two limiting posts 502. A compression spring 504 is sleeved between the two limiting posts 502, with its two ends respectively abutting against the first vertical plate 501 and the fixing plate 503. A screw 5050 is threadedly connected to the middle of the second vertical plate 505. One end of the screw 5050 is rotatably connected to the first vertical plate 501. The components include the fixing plate 503, limiting posts 502, first vertical plate 501, and compression springs. Together, 504 and screw 5050 constitute the elastic adaptive adjustment structure of cleaning block 506. Compression spring 504 provides elastic force, enabling cleaning block 506 to always adhere to the surface of the telescopic end of hydraulic telescopic cylinder 2. Even when there is a certain radial runout or wear at the telescopic end causing dimensional changes, the cleaning effect can still be guaranteed. Limiting post 502 restricts the movement direction of cleaning block 506 to prevent it from shifting during the cleaning process. Screw 5050 can adjust the compression degree of compression spring 504 by rotation, thereby adjusting the contact pressure between cleaning block 506 and the surface of telescopic end to adapt to different cleaning needs and working conditions.

[0030] The fixing component 3 includes two fixing rings 301 sleeved on the outer peripheral surface of the hydraulic telescopic cylinder 2. The two fixing rings 301 are fixed together by bolts. Multiple vertical rods 302 are fixedly connected to the bottom of each fixing ring 301 in an annular shape at equal intervals. Limiting rings 303 are fixedly connected to the bottom of the multiple vertical rods 302. The two fixing rings 301 are fixed to the outer peripheral surface of the hydraulic telescopic cylinder 2 by bolts, forming a stable fixing base to ensure that the entire fixing component 3 is tightly connected to the hydraulic telescopic cylinder 2 and will not rotate or shift relative to each other. The vertical rods 302 connect the fixing rings 301 and the limiting rings 303, playing a supporting and force-transmitting role, so that the limiting rings 303 can be stably maintained in a specific position.

[0031] The outer circumferential surfaces of the two limiting rings 303 are provided with grooves 304. A slider 305 is slidably connected within the grooves 304. Both ends of the slider 305 are fixedly mounted with pulleys 306 that are rotatably connected to the upper and lower ends of the grooves 304. A first mounting plate 307 is fixedly connected to the outer surface of the pulleys 306. The grooves 304, sliders 305, and pulleys 306 constitute the sliding guide structure of the drive assembly 4. The slider 305 slides within the grooves 304, providing precise guidance for the movement of the drive assembly 4, ensuring that the drive assembly 4 can move smoothly along the circumferential direction of the hydraulic telescopic cylinder 2. The upper and lower ends of the slider 305 and the slide groove 304 are rotatably connected, which converts the sliding friction between the slider 305 and the slide groove 304 into rolling friction, reducing the motion resistance and making the movement of the drive assembly 4 smoother. At the same time, it reduces the wear of the parts and improves the service life of the device. The first mounting plate 307 is used to connect the slider 305 and other parts of the drive assembly 4 to realize the connection between the drive assembly 4 and the fixed assembly 3. The bottom of the two limit rings 303 are provided with toothed grooves 308 at equal intervals. The opening of the toothed grooves 308 provides a structural basis for the meshing transmission of the connecting parts in the drive assembly 4.

[0032] The drive assembly 4 includes a second mounting plate 401 fixedly connected to the first mounting plate 307. The second mounting plate 401 has a rectangular groove 402 inside. An electric push rod 403 is fixedly installed at the end of the rectangular groove 402. The telescopic end of the electric push rod 403 is fixedly connected to a first right-angle plate 404. One end of the first right-angle plate 404 is fixedly connected to a first vertical plate 501. The second mounting plate 401 serves as the main mounting plate of the drive assembly 4, used to fix components such as the electric push rod 403 and the drive motor 405, ensuring accurate relative positions between the components. The rectangular groove 402 provides installation space and movement guidance for the electric push rod 403. The electric push rod 403, through telescopic movement, pushes the first right-angle plate 404 and the first vertical plate 501 connected thereto, thereby driving the cleaning assembly 5 to move horizontally, realizing the contact and separation of the cleaning block 506 with the telescopic end of the hydraulic telescopic cylinder 2. This facilitates the retraction of the cleaning assembly 5 when cleaning is not required, avoiding unnecessary wear and interference, and also facilitating the maintenance and replacement of the cleaning assembly 5.

[0033] A drive motor 405 is fixedly mounted on the bottom of the second mounting plate 401. A drive rod 407 is fixedly connected to the output end of the drive motor 405. A limiting plate 406 fixedly connected to the second mounting plate 401 passes through the drive rod 407. A gear 408 meshing with the tooth groove 308 is fixedly connected to one end of the drive rod 407. The drive motor 405 is the power source of the entire drive assembly 4. The drive rod 407 transmits the rotational power to the gear 408. The limiting plate 406 limits and supports the drive rod 407, ensuring that the drive rod 407 remains stable during rotation and does not deviate radially. This ensures that the gear 408 meshes correctly with the tooth groove 308. After the gear 408 meshes with the tooth groove 308, the rotational motion of the drive motor 405 is converted into the movement of the drive assembly 4 along the circumferential direction of the limiting ring 303. This causes the cleaning assembly 5 to move in a circular motion around the telescopic end of the hydraulic telescopic cylinder 2, achieving all-round cleaning of the surface of the telescopic end.

[0034] A second right-angle plate 409 is fixedly installed at one end of the top of the second mounting plate 401. A support wheel 410, which is rotatably connected to the top of the fixed ring 301, is fixedly installed at the bottom of one end of the second right-angle plate 409. The support wheel 410 is rotatably connected to the top of the fixed ring 301. During the movement of the drive assembly 4, the support wheel 410 plays a supporting and auxiliary guiding role, shares part of the weight of the drive assembly 4, reduces the force on the slider 305 and the pulley 306, and improves the stability and reliability of the movement of the drive assembly 4.

[0035] The working principle of this utility model is as follows: When the bending machine is started, the telescopic end of the hydraulic telescopic cylinder 2 unfolds, and the cleaning device enters standby mode. All components work in tandem. First, the two fixing rings 301 of the fixing component are fastened to the outer circumference of the hydraulic telescopic cylinder 2 with bolts. The vertical rod 302 supports the limiting ring 303 to form a circular track, providing a sliding and transmission basis for the drive component 4. Subsequently, the electric push rod 403 is activated, pushing the cleaning block 506 in the cleaning component 5 towards the piston rod. The compression spring 504 compresses to generate elastic force, causing the cleaning block 506 to adhere tightly to the piston rod surface. The cleaning cotton 509 simultaneously contacts the oil film. The screw 5050 can be pre-adjusted for the contact pressure. During the cleaning process, the drive motor 405 drives the gear 408 to rotate, meshing with the tooth groove 308 to achieve driving. The circumferential translation of the moving component 4, with slider 305 and pulley 306 ensuring smooth movement, and the cleaning block 506 moving in a circular motion around the piston rod with the driving component 4, scraping and adsorbing to remove oil stains. In the face of piston rod wear or radial runout, compression spring 504 automatically adjusts the gap between the cleaning block 506 and the piston rod. At the same time, the PLC control system of the drive motor 405 and electric push rod 403 is connected to the main program of the bending machine. After the piston rod is fully extended, the cleaning block 506 adheres to the outer surface of the piston rod to start cleaning. When the piston rod retracts, the cleaning block 506 separates from it to avoid interference. Finally, when the bending machine stops or cleaning is not required, the electric push rod 403 retracts and retracts the cleaning component 5, and the cleaning cotton 509 can be easily removed through the mounting strip 508 for replacement and maintenance.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automatic oil stain cleaning mechanism for a CNC bending machine, comprising a bending machine frame body (1), characterized in that: A hydraulic telescopic cylinder (2) is fixedly installed at the top center of the bending machine frame body (1). A fixing component (3) is fixedly provided on the outer peripheral surface of the hydraulic telescopic cylinder (2). A driving component (4) is provided on the outer peripheral surface of the fixing component (3). A cleaning component (5) is provided below the driving component (4). The cleaning component (5) includes a cleaning block (506) for cleaning the outer peripheral surface of the telescopic end of the hydraulic telescopic cylinder (2). A vertical groove (507) is provided in the middle of the cleaning block (506). An installation strip (508) is fixedly and movably inserted into the vertical groove (507). A cleaning cotton (509) for collecting oil stains is glued to one side of the installation strip (508). A top plate (510) is fixedly connected to the top of the installation strip (508). A fixing plate (503) is fixedly connected to one side of the cleaning block (506). Limiting posts (502) are symmetrically fixedly connected to one side of the fixing plate (503). The ends of the two limiting posts (502) are fixedly connected to a second vertical plate (505). The two limiting posts (502) movably pass through the first vertical plate (501). A compression spring (504) is sleeved between the two limiting posts (502) for abutting against the first vertical plate (501) and the fixing plate (503) at both ends respectively. A screw (5050) is threadedly connected to the middle of the second vertical plate (505). One end of the screw (5050) is rotatably connected to the first vertical plate (501).

2. The automatic oil stain cleaning mechanism for a CNC bending machine according to claim 1, characterized in that: The fixing component (3) includes two fixing rings (301) sleeved on the outer peripheral surface of the hydraulic telescopic cylinder (2). The two fixing rings (301) are fixed together by bolts. The bottom of each of the two fixing rings (301) is fixedly connected with a plurality of vertical rods (302) at equal intervals in a ring. The bottom of the plurality of vertical rods (302) is fixedly connected with a limit ring (303).

3. The automatic oil stain cleaning mechanism for a CNC bending machine according to claim 2, characterized in that: The outer peripheral surfaces of the two limiting rings (303) are provided with grooves (304), and sliders (305) are slidably connected in the grooves (304). Both ends of the sliders (305) are fixedly installed with pulleys (306) that are rotatably connected to the upper and lower ends of the grooves (304). The outer side of the pulleys (306) is fixedly connected with a first mounting plate (307).

4. The automatic oil stain cleaning mechanism for a CNC bending machine according to claim 3, characterized in that: The bottom of both limiting rings (303) is provided with equidistant toothed grooves (308).

5. The automatic oil stain cleaning mechanism for a CNC bending machine according to claim 1, characterized in that: The drive assembly (4) includes a second mounting plate (401) fixedly connected to the first mounting plate (307). The second mounting plate (401) has a rectangular groove (402) inside. An electric push rod (403) is fixedly installed at the end of the rectangular groove (402). A first right-angle plate (404) is fixedly connected to the telescopic end of the electric push rod (403). One end of the first right-angle plate (404) is fixedly connected to the first vertical plate (501).

6. The automatic oil stain cleaning mechanism for a CNC bending machine according to claim 5, characterized in that: A drive motor (405) is fixedly installed at the bottom of the second mounting plate (401). A drive rod (407) is fixedly connected to the output end of the drive motor (405). A limiting plate (406) fixedly connected to the second mounting plate (401) is movably passed through the drive rod (407). A gear (408) meshing with a tooth groove (308) is fixedly connected to one end of the drive rod (407).

7. The automatic oil stain cleaning mechanism for a CNC bending machine according to claim 5, characterized in that: A second right-angle plate (409) is fixedly installed at one end of the top of the second mounting plate (401), and a support wheel (410) that is rotatably connected to the top of the fixing ring (301) is fixedly installed at the bottom of one end of the second right-angle plate (409).

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