Cam follower slide device

Abstract

The application discloses a cam bearing follower sliding device, which comprises a guide rail, a reciprocating sliding piece slidingly arranged in the middle of the guide rail, a follower body arranged in the middle of the reciprocating sliding piece, a guide rail bearing support fixedly arranged in the middle of the lower end of the guide rail, two guide rail baffle plates symmetrically fixedly arranged at the two ends of the guide rail, two negative pressure adsorption support mechanisms arranged at the two ends of the guide rail bearing support, and a forward and reverse rotation cleaning mechanism for following the reciprocating movement of the reciprocating sliding piece and cleaning dust and impurities on the two side surfaces of the guide rail. The forward and reverse rotation cleaning mechanism symmetrically arranged at the two ends of the reciprocating sliding piece can dynamically clean the two side surfaces of the guide rail by means of the positive and reverse rotation of the soft-brush collecting cylinder with the forward and reverse rotation shaft. The elastic contact of the dust-removing soft-brush with the surface of the guide rail and the axial extension and contraction cooperation of the flat key groove and the limiting flat key can ensure that the dust-removing soft-brush is always attached to the guide rail profile.

Description

Technical Field

[0001] This invention relates to the field of cam bearing follower technology, and in particular to a sliding device for a cam bearing follower. Background Technology

[0002] A cam bearing follower is a mechanical transmission element that integrates the functions of a bearing and a cam follower. It typically consists of an outer ring, rolling elements, a cage, and a cam contact structure. Its core feature is the conversion of the sliding friction of a traditional cam follower into rolling friction through an internal rolling bearing, significantly reducing motion resistance and improving transmission accuracy. This component transmits motion through the rolling contact between the outer ring and the cam surface, serving both load support and guiding functions. It is widely used in automated equipment, machine tools, and packaging machinery where high-frequency reciprocating motion or complex trajectory following is required. Its structural design must balance contact stiffness, wear resistance, and rotational flexibility to meet dynamic response requirements under different operating conditions. In transmission systems requiring low-friction sliding fits, cam bearing followers are often used in combination with dedicated guide rails or grooves, leading to a cam bearing follower sliding device based on a combined rolling contact and sliding guidance mechanism. This device further improves motion smoothness and system lifespan by optimizing the contact interface matching relationship.

[0003] Existing cam bearing follower sliding devices generally suffer from dustproof performance defects. Their structural designs typically lack dust removal mechanisms, leading to the formation of a dust accumulation layer on the guide rail assembly surface after long-term operation. This is particularly evident in the areas where the track meets the sliding components. Particulate pollutants in the environment gradually accumulate due to equipment vibration and lubricant adsorption, forming an adhesive oily impurity layer. This pollutant accumulation is especially pronounced on the vertical guide surface and the lateral limiting structure. As the service life extends, abnormal dust accumulation will alter the original fit clearance of the guide rail pair, causing technical problems such as nonlinear increase in sliding resistance and motion jamming. In severe cases, it can directly cause positioning deviations in the cam drive mechanism or failure of the actuator. Therefore, a cam bearing follower sliding device is provided. Summary of the Invention

[0004] To overcome the shortcomings of the prior art, the present invention proposes a sliding device for a cam bearing follower.

[0005] To solve the above-mentioned technical problems, the basic technical solution proposed by this invention is as follows:

[0006] A cam bearing follower sliding device includes a guide rail, a reciprocating sliding member slidably installed in the middle of the guide rail, a follower body disposed in the middle of the reciprocating sliding member, a guide rail support fixedly disposed in the middle of the lower end of the guide rail, and two guide rail baffles symmetrically fixed at both ends of the guide rail. Each end of the guide rail support is provided with two negative pressure adsorption support mechanisms for stabilizing the guide rail support. The device also includes two forward and reverse rotation cleaning mechanisms symmetrically disposed at both ends of the reciprocating sliding member, used to follow the reciprocating sliding member to move back and forth synchronously and clean dust and impurities on both sides of the guide rail. Each forward and reverse rotation cleaning mechanism includes a fixed side seat, and each end of the fixed side seat is provided with two forward and reverse rotation shafts.

[0007] Preferably, the forward and reverse rotating shafts are rotatably connected to the fixed mounting side seat via bearings, and a soft brush collection cylinder is provided on the outer wall of the forward and reverse rotating shaft at the end facing the guide rail, and a dust removal soft brush is provided on the outer wall of the soft brush collection cylinder at the end facing the guide rail. A rack and pinion gear is fixedly installed on the outer wall of the forward and reverse rotating shaft at a position inside the fixed mounting side seat.

[0008] Preferably, a side seat adapter plate is provided on the outer wall of the fixed mounting side seat and in the middle of the side facing the reciprocating sliding member. The fixed mounting side seat and the reciprocating sliding member are connected through the side seat adapter plate. The soft brush collection cylinder is slidably sleeved on the outer wall of the forward and reverse rotation shaft, and the soft brush collection cylinder and the forward and reverse rotation shaft are elastically set by the collection cylinder spring. Two limiting flat keys are symmetrically arranged on the outer wall of the forward and reverse rotation shaft near both sides of the soft brush collection cylinder. A flat keyway is opened on the inner wall of the soft brush collection cylinder at each limiting flat key position.

[0009] Preferably, the forward and reverse rotation cleaning mechanism further includes a reciprocating rack disposed inside the fixed mounting side seat and near the rack gear position, and a drive shaft mounting seat mounted on the upper end of the fixed mounting side seat. A positioning shaft fixing plate is fixedly disposed in the middle of the upper end of the reciprocating rack, and two rotating wheel positioning shafts are symmetrically fixed on both sides of the upper end of the positioning shaft fixing plate. A rotating wheel drive shaft is rotatably disposed inside the drive shaft mounting seat through bearings, and an inclined rotating wheel is fixedly disposed on the outer wall of the rotating wheel drive shaft and located between the two rotating wheel positioning shafts. The outer end of the rotating wheel drive shaft is connected and assembled to the output end of the drive shaft motor through a coupling.

[0010] Preferably, each of the rack gears is meshed with a reciprocating rack, the two rotating wheel positioning shafts are slidably disposed with the inclined rotating wheel, a rack guide sleeve is fixedly disposed at the upper end of the reciprocating rack, and a rack guide rod is slidably disposed on the inner wall of the rack guide sleeve, and the rack guide rod is connected to the fixed mounting side seat. The rack guide sleeve and the fixed mounting side seat are elastically disposed by a guide sleeve spring.

[0011] Preferably, the negative pressure adsorption support mechanism includes a gas storage cylinder, which is connected to the guide rail support. The upper and lower openings of the gas storage cylinder are connected. A piston push-pull rod is provided inside the gas storage cylinder, and the outer surface of the piston push-pull rod is fitted with the inner surface of the gas storage cylinder with a clearance. A movable rubber plug is fixedly provided in the middle of the lower end of the piston push-pull rod, and the movable rubber plug is slidably disposed with the gas storage cylinder.

[0012] Preferably, a lifting helical gear plate is fixedly provided on the outer wall of the piston push-pull rod, and a threaded rod shaft is rotatably provided on the top of the gas storage cylinder near the piston push-pull rod via a bearing. A brake threaded rod is fixedly provided on the outer wall of the threaded rod shaft, and the brake threaded rod meshes with the lifting helical gear plate for transmission. A shaft assist handle is fixedly provided in the middle of the upper end of the threaded rod shaft, and an O-ring is fixedly provided on the inner wall of the lower end of the gas storage cylinder.

[0013] The beneficial effects of this invention are:

[0014] By setting up forward and reverse rotation cleaning mechanisms symmetrically installed at both ends of the reciprocating sliding component, the soft brush collection cylinder can dynamically clean both sides of the guide rail by rotating forward and reverse with the forward and reverse rotation axis. Through the elastic contact between the dust removal soft brush and the rail surface and the axial expansion and contraction cooperation between the flat keyway and the limit flat key, the dust removal soft brush is always in contact with the rail contour, which solves the problem of the existing sliding device causing changes in the guide rail pair fit clearance and nonlinear increase in sliding resistance due to the accumulation of pollutants. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0016] Figure 2 This is a schematic diagram of the forward and reverse rotation cleaning mechanism of the present invention. Figure 1 ;

[0017] Figure 3 This is a schematic diagram of the forward and reverse rotation cleaning mechanism of the present invention. Figure 2 ;

[0018] Figure 4 This is a schematic diagram of the negative pressure adsorption support mechanism of the present invention.

[0019] Explanation of reference numerals in the attached figures:

[0020] 100. Guide rail; 200. Follower body; 300. Guide rail support; 400. Guide rail baffle; 500. Reciprocating sliding component; 600. Negative pressure adsorption support mechanism; 601. Air storage cylinder; 602. Movable rubber plug; 603. O-ring seal; 604. Lifting helical toothed plate; 605. Brake threaded rod; 606. Threaded rod shaft; 607. Shaft assist handle; 608. Piston push-pull rod; 700. Forward and reverse rotation cleaning mechanism; 701. Fixed side seat; 702. Side seat adapter plate 703. Rotary wheel positioning shaft; 704. Dust removal soft brush; 705. Guide sleeve spring; 706. Rack guide sleeve; 707. Rack guide rod; 708. Rotary wheel drive shaft; 709. Tilting rotary wheel; 710. Positioning shaft fixing plate; 711. Drive shaft mounting seat; 712. Drive shaft motor; 713. Reciprocating rack; 714. Rack gear; 715. Forward and reverse rotation shaft; 716. Soft brush collection cylinder; 717. Collection cylinder spring; 718. Flat keyway; 719. Limiting flat key. Detailed Implementation

[0021] The following will be combined with the appendix Figure 1 To be continued Figure 4 The technical solutions in the embodiments of the present invention have been clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0022] This invention provides a technical solution: a cam bearing follower sliding device, comprising a guide rail 100, a reciprocating sliding member 500 slidably mounted in the middle of the guide rail 100, a follower body 200 disposed in the middle of the reciprocating sliding member 500, a guide rail support 300 fixedly disposed in the middle of the lower end of the guide rail 100, and two guide rail baffles 400 symmetrically fixed at both ends of the guide rail 100 for intercepting the reciprocating sliding member 500 to prevent it from falling off. Dust scrapers are provided on both sides of the top of the guide rail 100 to block dust and impurities on the upper end of the guide rail 100. The follower body 200 is the cam bearing follower. Two negative pressure adsorption support mechanisms 600 are provided at both ends of the guide rail support 300 to stabilize the guide rail support 300. The device also includes two forward and reverse rotation cleaning mechanisms 700 symmetrically arranged at both ends of the reciprocating sliding member 500 to follow the reciprocating sliding member 500 to move back and forth synchronously and to clean the dust and impurities on both sides of the guide rail 100.

[0023] Specifically, the forward and reverse rotation cleaning mechanism 700 includes a fixed mounting side seat 701. A side seat adapter plate 702 is provided on the middle of the outer wall of the fixed mounting side seat 701 facing the reciprocating sliding member 500. The fixed mounting side seat 701 and the reciprocating sliding member 500 are connected through the side seat adapter plate 702. Two forward and reverse rotation shafts 715 are provided at both ends inside the fixed mounting side seat 701. The forward and reverse rotation shafts 715 are rotatably connected to the fixed mounting side seat 701 through bearings. A soft brush collection cylinder 716 is provided on the outer wall of the forward and reverse rotation shaft 715 facing the guide rail 100. A dust removal soft brush 704 is provided on the outer wall of the soft brush collection cylinder 716 facing the guide rail 100. The soft brush collection cylinder 716 is slidably sleeved on the forward and reverse rotation shafts. The outer wall of the rotating shaft 715, the soft brush collection cylinder 716 and the forward and reverse rotation shaft 715 are elastically connected by a collection cylinder spring 717. Two limit keys 719 are symmetrically arranged on the outer wall of the forward and reverse rotation shaft 715 near both sides of the soft brush collection cylinder 716. A keyway 718 is provided on the inner wall of the soft brush collection cylinder 716 at each limit key 719 position to cooperate with the limit keys 719, allowing the soft brush collection cylinder 716 to extend and retract axially along the forward and reverse rotation shaft 715 while rotating synchronously with it. A rack and pinion gear 714 is fixedly installed on the outer wall of the forward and reverse rotation shaft 715 inside the fixed mounting side seat 701. The forward and reverse rotation cleaning mechanism 700 also includes a rack and pinion gear 714 located on the fixed mounting side seat 701. A reciprocating rack 713 is located inside the seat 701 and near the rack and pinion 714, used for synchronous driving of each rack and pinion 714. A drive shaft mounting seat 711 is mounted on the upper end of the fixed mounting side seat 701. Each rack and pinion 714 meshes with the reciprocating rack 713. A positioning shaft fixing plate 710 is fixedly mounted in the middle of the upper end of the reciprocating rack 713. Two rotating wheel positioning shafts 703 are symmetrically fixed on both sides of the upper end of the positioning shaft fixing plate 710. A rotating wheel drive shaft 708 is rotatably mounted inside the drive shaft mounting seat 711 via bearings. The outer end of the rotating wheel drive shaft 708 is connected to the output end of the drive shaft motor 712 via a coupling. The outer wall of the rotating wheel drive shaft 708 and located on the two... An inclined rotating wheel 709 is fixedly installed between the rotating wheel positioning shafts 703. The two rotating wheel positioning shafts 703 and the positioning shaft fixing plate 710 are used to drive the reciprocating rack 713 to move back and forth. The rack and pinion gear 714 drives the forward and reverse rotating shafts 715 to rotate forward and reverse. The two rotating wheel positioning shafts 703 are slidably installed with the inclined rotating wheel 709 and clamp and position the inclined rotating wheel 709. A rack guide sleeve 706 is fixedly installed at the upper end of the reciprocating rack 713. A rack guide rod 707 is slidably installed on the inner wall of the rack guide sleeve 706. The rack guide rod 707 is connected to the fixed mounting side seat 701. The rack guide sleeve 706 and the fixed mounting side seat 701 are elastically set by the guide sleeve spring 705.

[0024] Specifically, the negative pressure adsorption support mechanism 600 includes a gas storage cylinder 601 for storing gas. The gas storage cylinder 601 is connected to the guide rail support 300. The upper and lower openings of the gas storage cylinder 601 are connected. A piston push-pull rod 608 is provided inside the gas storage cylinder 601. The outer surface of the piston push-pull rod 608 is clearance-fitted with the inner surface of the gas storage cylinder 601. A movable rubber plug 602 is fixedly provided in the middle of the lower end of the piston push-pull rod 608 for drawing and releasing gas. The movable rubber plug 602 is slidably disposed with the gas storage cylinder 601. A lifting helical toothed plate 604 is fixedly provided on the outer wall of the piston push-pull rod 608 for driving the movable toothed plate 604. The piston push-pull rod 608 is raised and lowered synchronously. A threaded rod shaft 606 is rotatably mounted on the top of the air storage cylinder 601 near the piston push-pull rod 608 via a bearing. A brake threaded rod 605 is fixedly mounted on the outer wall of the threaded rod shaft 606. The brake threaded rod 605 meshes with the lifting helical tooth plate 604 for transmission. A shaft assist handle 607 is fixedly mounted in the middle of the upper end of the threaded rod shaft 606 to facilitate the operator to rotate the threaded rod shaft 606 and the brake threaded rod 605. An O-ring seal 603 is fixedly mounted on the inner wall of the lower end of the air storage cylinder 601 to seal the joint. The lower end face of the O-ring seal 603 is slightly lower than the lower end face of the air storage cylinder 601.

[0025] Based on the above, the present invention, by setting up forward and reverse rotation cleaning mechanisms 700 symmetrically installed at both ends of the reciprocating sliding member 500, can dynamically clean both sides of the guide rail 100 by utilizing the forward and reverse rotation of the soft brush collection cylinder 716 with the forward and reverse rotation shaft 715 during use. Through the elastic contact between the dust removal soft brush 704 and the rail surface and the axial expansion and contraction cooperation between the flat keyway 718 and the limiting flat key 719, the dust removal soft brush 704 is always in contact with the rail contour, solving the problem of changes in the guide rail pair fit clearance and nonlinear increase in sliding resistance caused by the accumulation of pollutants in the existing sliding device. The present invention, by setting up negative pressure adsorption support mechanisms 600 at both ends of the guide rail support 300, utilizes the negative pressure adsorption effect of the piston push-pull rod 608 and the movable rubber plug 602 in the air storage cylinder 601 during use, and the O-ring seal 603 is tightly attached to the mounting surface, which facilitates the quick disassembly, assembly and fixation of the guide rail support 300 and the guide rail 100 by the operator.

[0026] Based on the disclosure and teachings of the foregoing specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the protection scope of the claims of the present invention. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on the present invention.

Claims

1. A sliding device for a cam bearing follower, comprising a guide rail (100), a reciprocating sliding member (500) slidably mounted in the middle of the guide rail (100), a follower body (200) disposed in the middle of the reciprocating sliding member (500), a guide rail support (300) fixedly disposed in the middle of the lower end of the guide rail (100), and two guide rail baffles (400) symmetrically fixed at both ends of the guide rail (100), characterized in that, The guide rail support (300) is provided with two negative pressure adsorption support mechanisms (600) at both ends for stabilizing the guide rail support (300). It also includes two forward and reverse rotation cleaning mechanisms (700) symmetrically arranged at both ends of the reciprocating sliding member (500) for synchronously reciprocating with the reciprocating sliding member (500) and cleaning dust and impurities on both sides of the guide rail (100). The forward and reverse rotation cleaning mechanism (700) includes a fixed side seat (701), and two forward and reverse rotation shafts (715) are provided at both ends inside the fixed side seat (701). The positive and negative rotating shaft (715) and the fixed mounting side seat (701) are rotatably connected by bearings. A soft brush collection cylinder (716) is provided on the outer wall of the positive and negative rotating shaft (715) at the end facing the guide rail (100). A dust removal soft brush (704) is provided on the outer wall of the soft brush collection cylinder (716) at the end facing the guide rail (100). A rack and pinion gear (714) is fixedly installed on the outer wall of the positive and negative rotating shaft (715) at the position inside the fixed mounting side seat (701). The forward and reverse rotation cleaning mechanism (700) also includes a reciprocating rack (713) disposed inside the fixed mounting side seat (701) and near the rack gear (714), and a drive shaft mounting seat (711) mounted on the upper end of the fixed mounting side seat (701). A positioning shaft fixing plate (710) is fixedly disposed in the middle of the upper end of the reciprocating rack (713), and two rotating wheel positioning shafts (703) are symmetrically fixed on both sides of the upper end of the positioning shaft fixing plate (710). A rotating wheel drive shaft (708) is rotatably disposed inside the drive shaft mounting seat (711) through a bearing, and an inclined rotating wheel (709) is fixedly disposed on the outer wall of the rotating wheel drive shaft (708) between the two rotating wheel positioning shafts (703). The outer end of the rotating wheel drive shaft (708) is connected and assembled to the output end of the drive shaft motor (712) through a coupling. Each of the rack gears (714) is meshed with a reciprocating rack (713), and the two rotating wheel positioning shafts (703) are slidably disposed with the inclined rotating wheel (709). A rack guide sleeve (706) is fixedly disposed at the upper end of the reciprocating rack (713), and a rack guide rod (707) is slidably disposed on the inner wall of the rack guide sleeve (706). The rack guide rod (707) is connected to the fixed mounting side seat (701), and the rack guide sleeve (706) and the fixed mounting side seat (701) are elastically disposed by a guide sleeve spring (705).

2. The sliding device for a cam bearing follower according to claim 1, characterized in that: A side seat adapter plate (702) is provided on the outer wall of the fixed mounting side seat (701) and in the middle of the side facing the reciprocating sliding member (500). The fixed mounting side seat (701) and the reciprocating sliding member (500) are connected by the side seat adapter plate (702). The soft brush collection cylinder (716) is slidably sleeved on the outer wall of the forward and reverse rotation shaft (715). The soft brush collection cylinder (716) and the forward and reverse rotation shaft (715) are elastically set by the collection cylinder spring (717). Two limit flat keys (719) are symmetrically arranged on the outer wall of the forward and reverse rotation shaft (715) near the two sides of the soft brush collection cylinder (716). A flat key groove (718) is opened on the inner wall of the soft brush collection cylinder (716) at the position of each limit flat key (719).

3. The sliding device for a cam bearing follower according to claim 1, characterized in that: The negative pressure adsorption support mechanism (600) includes a gas storage cylinder (601), which is connected to the guide rail support (300). The upper and lower openings of the gas storage cylinder (601) are connected. A piston push-pull rod (608) is provided inside the gas storage cylinder (601). The outer surface of the piston push-pull rod (608) is fitted with the inner surface of the gas storage cylinder (601) with a clearance. A movable rubber plug (602) is fixedly provided in the middle of the lower end of the piston push-pull rod (608). The movable rubber plug (602) is slidably disposed with the gas storage cylinder (601).

4. The sliding device for a cam bearing follower according to claim 3, characterized in that: The piston push-pull rod (608) is fixedly provided with a lifting helical tooth plate (604) on its outer wall. The top of the gas storage cylinder (601) and near the piston push-pull rod (608) is provided with a threaded rod shaft (606) which is rotatably provided by a bearing. The outer wall of the threaded rod shaft (606) is fixedly provided with a brake threaded rod (605), and the brake threaded rod (605) meshes with the lifting helical tooth plate (604) for transmission. The middle part of the upper end of the threaded rod shaft (606) is fixedly provided with a shaft assist handle (607). The inner wall of the lower end of the gas storage cylinder (601) is fixedly provided with an O-ring seal (603).

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