CN213917592U

CN213917592U - Abrasive belt tensioning device

Info

Publication number: CN213917592U
Application number: CN202023017131.0U
Authority: CN
Inventors: 赵广铭; 周华
Original assignee: Beijing Yongyan Hesheng Technology Co ltd
Current assignee: Beijing Yongyan Hesheng Technology Co ltd
Priority date: 2020-12-15
Filing date: 2020-12-15
Publication date: 2021-08-10
Anticipated expiration: 2030-12-15

Abstract

The utility model provides an abrasive band overspeed device tensioner belongs to abrasive band tensioning technical field, and this abrasive band overspeed device tensioner includes support body subassembly, centering subassembly and tensioning assembly. The support body subassembly includes frame, brace table and support frame, centering subassembly includes centering axle, slip roller shell, centering spring and centering dish, tensioning subassembly is including pressure shaft, tensioning spring, hydraulic cylinder and tensioning roller. Centering dish receives abrasive band bending force and can offset through centering spring compression, drive one section distance of abrasive band horizontal migration simultaneously, the last item receives abrasive band bending force and can offset through tensioning spring compression or hydraulic cylinder compression, drive one section distance of abrasive band vertical migration simultaneously, adopt horizontal spring centering design, make things convenient for the abrasive band to offset the eccentric of horizontal direction and buckle, adopt hydraulic spring tensioning design, make things convenient for the abrasive band to offset the eccentric of vertical direction and buckle, abrasive band grinding work piece inclined plane profile is more convenient, abrasive band grinding work piece inclined plane profile effect is better.

Description

Abrasive belt tensioning device

Technical Field

The utility model relates to an abrasive band tensioning technical field particularly, relates to an abrasive band overspeed device tensioner.

Background

Abrasive belts belong to coated abrasives, known as flexible abrasives. Compared with a solid grinding tool grinding wheel, the polishing machine has the advantages of more flexibility and safety, higher precision and low grinding cost during polishing, and basically comprises the following components: a substrate, an abrasive, and a binder. The belt is too tight or causes the belt to break, and too loose causes slipping, so that a special tensioning device is needed for tensioning and adjusting the belt.

However, the above scheme still has certain defects, and the inventor finds that when the abrasive belt grinds the inclined plane profile of a workpiece, the eccentric bending of the abrasive belt is easy to cause the tensioning abrasive belt to be torn, so that the abrasive belt grinding efficiency is influenced.

SUMMERY OF THE UTILITY MODEL

In order to make up for above not enough, the utility model provides an abrasive band overspeed device tensioner aims at improving the inconvenient problem of abrasive band grinding work piece inclined plane profile.

The utility model discloses a realize like this:

the utility model provides an abrasive band overspeed device tensioner includes support body subassembly, centering subassembly and tensioning assembly.

The frame body component comprises a frame, a supporting table and a supporting frame, the supporting table is horizontally arranged between the upper ends of the frame, the bottom of the supporting frame is vertically arranged on one side of the top of the frame, the centering component comprises a centering shaft, a sliding roller sleeve, a centering spring and a centering disc, two ends of the centering shaft horizontally and symmetrically rotate between the supporting frames, the sliding roller sleeve slides on the surface of the centering shaft, the centering spring is horizontally arranged between the supporting frame and the sliding roller sleeve, the centering spring is sleeved on one side of the surface of the centering shaft, the centering disc is symmetrically and fixedly sleeved on one side of the surface of the sliding roller sleeve, the tensioning component comprises a pressing shaft, a tensioning spring, a lifting hydraulic cylinder and a tensioning roller shaft, two ends of the pressing shaft vertically and uniformly slide between the upper ends of the supporting frame, the tensioning spring is vertically arranged between the top of the supporting frame and one end of the pressing, the tensioning spring is sleeved on one side in the supporting frame, the tops of the cylinder bodies of the lifting hydraulic cylinders are vertically and uniformly distributed at the bottom of the supporting table, and the tensioning roller shaft horizontally rotates at one end of a piston rod of the lifting hydraulic cylinder.

The utility model discloses an in one embodiment, brace table both sides are provided with the fixed plate, fixed plate one side is fixed in support frame upper end inner wall one side.

In an embodiment of the present invention, the two ends of the centering shaft are provided with a rotating seat, and the bottom of the rotating seat is fixed on one side of the top of the supporting frame.

In an embodiment of the present invention, the support frame side adjacent to the centering shaft is provided with a spacing seat, and the centering spring is disposed between the spacing seat and the sliding roller sleeve.

The utility model discloses an in one embodiment, it is adjacent centering dish slip roller shell fixed surface has cup jointed the cutting ferrule, centering dish one side is fixed in cutting ferrule one side.

The utility model discloses an in one embodiment, the last both ends of the last item are rotated and are provided with the guide holder, the vertical slip in all sides of guide holder in one side in the brace table upper end, the laminating of tensioning spring lower extreme in the guide holder top.

The utility model discloses an in one embodiment, support frame top equipartition is provided with the cassette, tensioning spring upper end cup joint in cassette lower extreme surface.

The utility model discloses an in the embodiment, hydraulic cylinder piston rod one end is provided with the support, tensioning roller both ends level rotate in the support upper end.

The utility model discloses an in the embodiment, the vertical symmetry in support bottom is provided with the guide pillar, the guide pillar lower extreme slide run through in brace table surface one side.

The utility model discloses an in the embodiment, tensioning roller surface mounting has cup jointed the tensioning roller cover, the tensioning roller cover orientation the last item.

The utility model has the advantages that: the utility model discloses an abrasive band overspeed device tensioner who obtains through above-mentioned design, when using, twine the abrasive band mill flour on slip roller shell surface, twine the abrasive band back on the last item surface, according to the width of abrasive band, adjust the distance between the centering dish and make it laminate abrasive band both sides, open hydraulic cylinder control the lift height of a plurality of tensioning roller shafts, make tensioning roller shaft and last item cooperate to bend and strain the abrasive band, when the abrasive band grinds work piece inclined plane profile off-centre, the centering dish receives abrasive band bending force and can offset through centering spring compression, drive abrasive band horizontal migration a section distance simultaneously, the last item receives abrasive band bending force and can offset through tensioning spring compression or hydraulic cylinder compression, drive the abrasive band vertical migration a section distance simultaneously, adopt horizontal spring centering design, make things convenient for the abrasive band to offset the eccentric bending of horizontal direction, adopt hydraulic spring tensioning design, make things convenient for the abrasive band to offset the eccentric bending of vertical direction, the abrasive belt is more convenient to grind the profile of the inclined plane of the workpiece, and the abrasive belt has better effect on grinding the profile of the inclined plane of the workpiece.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic perspective view of an abrasive belt tensioning device according to an embodiment of the present invention;

fig. 2 is a schematic view of a three-dimensional structure of a frame body assembly according to an embodiment of the present invention;

fig. 3 is a schematic perspective view of a centering assembly according to an embodiment of the present invention;

fig. 4 is a schematic perspective view of a tensioning assembly according to an embodiment of the present invention.

In the figure: 100-a rack assembly; 110-a rack; 120-a support table; 121-fixing plate; 130-a support frame; 131-a limiting seat; 132-a card holder; 200-a centering assembly; 210-a centering shaft; 211-a rotating seat; 220-sliding roller sleeve; 221-a card sleeve; 230-centering spring; 240-centering disk; 300-a tensioning assembly; 310-pressing the shaft; 311-a guide seat; 320-a tension spring; 330-a lifting hydraulic cylinder; 331-a support; 332-guide pillars; 340-tensioning roller shaft; 341-tensioning roller sleeve.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Examples

Referring to fig. 1, 2, 3 and 4, the present invention provides a technical solution: the utility model provides an abrasive band overspeed device tensioner includes support body subassembly 100, centering subassembly 200 and tensioning subassembly 300, centering subassembly 200 sets up in support body subassembly 100 upper end one side, tensioning subassembly 300 sets up in support body subassembly 100 upper end opposite side, centering subassembly 200 horizontal direction offsets abrasive band buckling force to avoid the abrasive band to tear through horizontal displacement, when tensioning subassembly 300 tensioning abrasive band, abrasive band buckling force is offset to vertical direction, and avoid the abrasive band to tear through vertical displacement.

Referring to fig. 1 and 2, the frame assembly 100 includes a frame 110, a support table 120 and a support frame 130, wherein fixing plates 121 are disposed on two sides of the support table 120, the fixing plates 121 and the support table 120 are integrally formed, one side of the fixing plates 121 is fixed on one side of an inner wall of an upper end of the support frame 130, the fixing plates 121 are bolted to the support frame 130, the support table 120 is horizontally disposed between the upper ends of the frame 110, a bottom of the support frame 130 is vertically disposed on one side of a top of the frame 110, and.

Referring to fig. 1 and 3, the centering assembly 200 includes a centering shaft 210, a sliding roller sleeve 220, a centering spring 230 and a centering disc 240, wherein two ends of the centering shaft 210 are rotatably provided with a rotating seat 211, a bearing is arranged in the rotating seat 211, two ends of the centering shaft 210 are rotatably arranged between the bearings, the bottom of the rotating seat 211 is fixed on one side of the top of the supporting frame 130, the rotating seat 211 is screwed with the supporting frame 130, two ends of the centering shaft 210 are horizontally and symmetrically rotated between the supporting frames 130, and the sliding roller sleeve 220 slides on the surface of the centering shaft 210, in this embodiment, the sliding roller sleeve 220 horizontally slides to generate displacement, so as to prevent the abrasive belt from being torn due to stress, one side of the supporting frame 130 adjacent to the centering shaft 210 is provided with a limiting seat 131, the limiting seat 131 is screwed with the supporting frame 130, the centering spring 230 is arranged between the limiting seat 131 and the sliding roller sleeve 220, the centering spring 230 is horizontally arranged between the supporting frame 130 and the sliding roller sleeve 220, the centering spring 230 compresses to offset the lateral force applied to the abrasive belt, the supporting and sliding of the sliding roller sleeve 220 are facilitated, the centering spring 230 is sleeved on one side of the surface of the centering shaft 210, the surface of the sliding roller sleeve 220 of the adjacent centering disc 240 is fixedly sleeved with the clamping sleeve 221, the clamping sleeve 221 is sleeved on the sliding roller sleeve 220 and fixed through screws, one side of the centering disc 240 is fixed on one side of the clamping sleeve 221, the centering disc 240 is in threaded connection with the clamping sleeve 221, the centering disc 240 corrects the position of the abrasive belt in a reciprocating mode through the centering spring 230, and the centering disc 240 is symmetrically and fixedly sleeved on one side of the surface of the sliding roller sleeve 220.

Referring to fig. 1 and 4, the tension assembly 300 includes a pressing shaft 310, a tension spring 320, a lifting hydraulic cylinder 330 and a tension roller shaft 340, wherein guide seats 311 are rotatably disposed at two ends of the pressing shaft 310, bearings are disposed in the guide seats 311, two ends of the pressing shaft 310 are rotatably disposed between the bearings, and the circumferential sides of the guide seats 311 vertically slide on one side of the upper end of the support table 120, in an embodiment, sliding grooves are uniformly formed in the support table 120, the guide seats 311 vertically slide in the sliding grooves, two ends of the pressing shaft 310 vertically slide between the upper ends of the support frames 130, clamping seats 132 are uniformly disposed at the top of the support frames 130, the clamping seats 132 are in threaded connection with the support frames 130, the upper ends of the tension springs 320 are sleeved on the lower end surfaces of the clamping seats 132, in an embodiment, bosses are disposed at the lower ends of the tension springs 320, the lower ends of the tension springs 320 are attached to the top of the guide seats 311, the tension springs 320 are fixed, the tension springs 320 are vertically disposed between the top of the support frames 130 and one ends of the pressing shaft 310, the tension spring 320 is sleeved at one side in the support frame 130, the tension spring 320 compresses to counteract the lateral force applied to the abrasive belt, and the pressing shaft 310 floats upwards through the tension spring 320 to move to avoid tearing of the abrasive belt.

Wherein, the top of the body of the lifting hydraulic cylinder 330 is vertically and evenly arranged at the bottom of the supporting platform 120, the lifting hydraulic cylinder 330 is in bolt connection with the supporting platform 120, the lifting hydraulic cylinder 330 controls the tensioning roller shaft 340 to be matched with and tension the abrasive belt up and down, the lifting hydraulic cylinder 330 compresses to counteract the lateral force applied to the abrasive belt, the tensioning roller shaft 340 floats downwards to avoid tearing of the abrasive belt, one end of the piston rod of the lifting hydraulic cylinder 330 is provided with a support 331, the lifting hydraulic cylinder 330 is in bolt connection with the support 331, two ends of the tensioning roller shaft 340 horizontally rotate in the upper end of the support 331, the upper end of the support 331 is provided with a bearing, two ends of the tensioning roller shaft 340 rotate between the bearings, the bottom of the support 331 is vertically and symmetrically provided with guide posts 332, the guide posts 332 are in bolt connection with the support 331, the lower ends of the guide posts 332 slidably penetrate one side of the surface of the supporting platform 120, in the concrete embodiment, the lower ends of the guide posts 332 are in sliding in guide posts, the tensioning roller shaft 340 horizontally rotates at one end of the piston rod of the lifting hydraulic cylinder 330, the surface of the tension roller shaft 340 is fixedly sleeved with a tension roller sleeve 341, the tension roller sleeve 341 is sleeved on the tension roller shaft 340 and fixed through screws, the purpose of the tension roller sleeve 341 is to reduce the abrasion of the abrasive belt facing the roller shaft, and the tension roller sleeve 341 faces the press shaft 310.

Specifically, the working principle of the abrasive belt tensioning device is as follows: when the abrasive belt bending device is used, the abrasive belt grinding surface is wound on the surface of the sliding roller sleeve 220, the back surface of the abrasive belt is wound on the surface of the pressing shaft 310, the distance between the centering discs 240 is adjusted according to the width of the abrasive belt to be attached to the two sides of the abrasive belt, the lifting hydraulic cylinder 330 is opened to control the lifting heights of the plurality of tensioning roller shafts 340, the tensioning roller shafts 340 and the pressing shaft 310 are matched to bend and tension the abrasive belt, when the abrasive belt grinds the inclined plane profile of a workpiece and is eccentric, the bending force of the abrasive belt on the centering discs 240 is compressed and counteracted through the centering springs 230, the abrasive belt is driven to horizontally move for a certain distance, the bending force of the abrasive belt on the pressing shaft 310 is compressed and counteracted through the tensioning springs 320 or the lifting hydraulic cylinder 330, the abrasive belt is driven to vertically move for a certain distance, springs or hydraulic cylinders in the horizontal direction and the vertical direction counteract the lateral force caused by bending of the abrasive belt, and the temporary displacement deviation in the horizontal direction or the vertical direction are realized, so that the tearing of the abrasive belt is reduced, the abrasive belt is more convenient to grind the profile of the inclined plane of the workpiece, and the abrasive belt has better effect on grinding the profile of the inclined plane of the workpiece.

It should be noted that the specific model specification of the hydraulic cylinder 330 needs to be determined by type selection according to the actual specification of the device, and the specific type selection calculation method adopts the prior art in the field, so detailed description is omitted.

The power supply of the hydraulic lifting cylinder 330 and its principle will be clear to a person skilled in the art and will not be described in detail here.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An abrasive belt tensioning device is characterized by comprising

The rack body assembly (100) comprises a rack body (110), a supporting table (120) and a supporting frame (130), wherein the supporting table (120) is horizontally arranged between the upper ends of the rack body (110), and the bottom of the supporting frame (130) is vertically arranged on one side of the top of the rack body (110);

the centering assembly (200) comprises a centering shaft (210), a sliding roller sleeve (220), a centering spring (230) and a centering disc (240), two ends of the centering shaft (210) horizontally and symmetrically rotate between the support frames (130), the sliding roller sleeve (220) slides on the surface of the centering shaft (210), the centering spring (230) is horizontally arranged between the support frames (130) and the sliding roller sleeve (220), the centering spring (230) is sleeved on one side of the surface of the centering shaft (210), and the centering disc (240) is symmetrically and fixedly sleeved on one side of the surface of the sliding roller sleeve (220);

tensioning subassembly (300), tensioning subassembly (300) are including last item (310), tensioning spring (320), hydraulic cylinder (330) and tensioning roller (340), the vertical equipartition in last item (310) both ends slide in between support frame (130) upper end, tensioning spring (320) vertical set up in support frame (130) top with between last item (310) one end, tensioning spring (320) cup joint in one side in support frame (130), the vertical equipartition in hydraulic cylinder (330) body top set up in brace table (120) bottom, tensioning roller (340) level rotate in hydraulic cylinder (330) piston rod one end.

2. Belt tensioner according to claim 1, characterized in that fixing plates (121) are arranged on both sides of said support table (120), and one side of said fixing plates (121) is fixed to one side of the inner wall of the upper end of said support frame (130).

3. Belt tensioner according to claim 1, characterized in that said centering shaft (210) is provided with a rotating base (211) at both ends thereof, and the bottom of said rotating base (211) is fixed to one side of the top of said supporting frame (130).

4. Belt tensioner according to claim 1, characterized in that a stop seat (131) is arranged on the side of the support frame (130) adjacent to the centering shaft (210), and that the centering spring (230) is arranged between the stop seat (131) and the sliding sleeve (220).

5. Belt tensioner according to claim 1, characterized in that a clamping sleeve (221) is fixed to the surface of said sliding sleeve (220) adjacent to said centering disc (240), said centering disc (240) being fixed on one side to said clamping sleeve (221).

6. A belt tensioner according to claim 1, wherein said pressing shaft (310) is rotatably provided with a guide seat (311) at both ends, said guide seat (311) is circumferentially and vertically slid on one side of said supporting table (120) inside the upper end, and the lower end of said tension spring (320) is engaged with the top of said guide seat (311).

7. The belt tensioner of claim 1, wherein a clamping seat (132) is uniformly disposed on the top of the support frame (130), and the upper end of the tension spring (320) is sleeved on the lower end surface of the clamping seat (132).

8. Belt tensioner according to claim 1, characterized in that the hydraulic cylinder (330) is provided with a seat (331) at one end of its piston rod, and that the tensioning roller shaft (340) is rotated horizontally with its two ends in the upper end of the seat (331).

9. Belt tensioner according to claim 8, characterized in that said base (331) is vertically and symmetrically provided with guide posts (332), and the lower ends of said guide posts (332) are slidably inserted through one side of the surface of said support table (120).

10. A belt tensioner according to claim 1, characterized in that a tension roller sleeve (341) is fixed around the surface of said tension roller shaft (340), said tension roller sleeve (341) facing said pressure shaft (310).