CN217255021U

CN217255021U - Positioning bushing and knife sharpening mechanism using same

Info

Publication number: CN217255021U
Application number: CN202220509023.5U
Authority: CN
Inventors: 华旭巍
Original assignee: Ningbo Jinxi Precision Machinery Co ltd
Current assignee: Ningbo Jinxi Precision Machinery Co ltd
Priority date: 2022-03-08
Filing date: 2022-03-08
Publication date: 2022-08-23
Anticipated expiration: 2032-03-08

Abstract

The utility model discloses a positioning bush and knife sharpening mechanism using the same, the positioning bush comprises a bush body, a cover plate, a top plate, a spring and a screw rod, a threaded hole is arranged on the outer wall of the bush body, an external thread is arranged on the screw rod, the screw rod is connected with the threaded hole of the bush body, the cover plate is pressed on the end surface of the bush body through the screw, the top plate is connected with the spring, and the spring presses the top plate on the outer wall of the bush body; the grinding mechanism comprises a left grinding tool rest, a right grinding tool rest, an abrasive belt, a pressing plate and a pulley, wherein the pulley is arranged at two ends of the left grinding tool rest and the right grinding tool rest, the abrasive belt is sleeved on the pulley, the pressing plate is arranged on the left grinding tool rest and/or the right grinding tool rest, the rear ends of the left grinding tool rest and the right grinding tool rest are hinged together, and the front ends of the left grinding tool rest and the right grinding tool rest are respectively provided with a positioning bushing structure. The utility model provides a mechanism of whetting a knife of location bush and applied this bush is convenient for the abrasive band to be changed.

Description

Positioning bushing and knife sharpening mechanism using same

Technical Field

The utility model relates to a mechanism of whetting a knife of location bush and applied this bush.

Background

The electric scissors are the necessary equipment for cutting in the clothing industry, and can be used in both large and small clothing factories. The cutting machine can cut most garment materials on the market, can cut hundreds of layers of fabrics at one time, and has the characteristics of light weight, high efficiency, convenient use, quick maintenance and the like. The existing electric shears cannot be detached and sharpened compared with a cutter of a manual shears, so that after the electric shears are used for a long time, the working efficiency of the electric shears is reduced due to the fact that the cutter of the existing electric shears becomes blunt, and cloth can be damaged when the cutter is used for shearing cloth. Therefore, when the cutting knife of the cutting machine is worn, the cutting knife is usually ground by a knife grinding device. The power comes from the machine when current knife sharpening device coping, under the blade idle state of cutting, utilizes the clamp plate on the knife sharpening device as the abrasive band direction, and two circle abrasive bands carry out the coping to the edge of a knife under the guide of clamp plate, and the knife sharpening frame is from top to bottom on the machine during the coping, and the automatic switch-over is upwards when arriving blade head portion, and the device autostop is up to a mill knife circulation end. Because the abrasive belt needs to be replaced frequently under the normal use condition, the existing knife grinding device has compact structure and small space, and the abrasive belt is not installed in place frequently or the abrasive belt is installed on the back surface of the pressure plate, so that the pressure plate is worn out.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to prior art's current situation, provide a mechanism of whetting a knife of location bush and applied this bush, the abrasive band of being convenient for is changed.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: a positioning bushing, includes the bush body, its characterized in that: the bushing body is provided with a threaded hole, the threaded hole is formed in the outer wall of the bushing body and is provided with external threads, the threaded hole is connected to the threaded hole of the bushing body, the cover plate is pressed on the end face of the bushing body through a screw, the top plate is connected with the spring, and the top plate is pressed on the outer wall of the bushing body through the spring.

As an improvement, a boss is formed on the outer side wall of the bushing body, and the threaded hole is formed in the boss.

And the side wall of the top plate opposite to the lining body forms an arc-shaped groove matched with the outer wall of the lining body.

In another improvement, the outer end of the screw is formed with a rotating part.

Additionally, the utility model also provides a mechanism of whetting a knife, including left knife rest, right knife rest, abrasive band, clamp plate and pulley, the pulley sets up in the both ends of left knife rest and right knife rest, and on the pulley was located to the abrasive band cover, the clamp plate set up on left knife rest and right knife rest, its characterized in that: the rear end of left side knife rest and right knife rest articulates together each other, the front end of left side knife rest and right knife rest is provided with a location bush structure respectively, location bush structure includes the location bush, set up locating hole, screw hole and spring groove respectively at the front end of left side knife rest and right knife rest, screw hole and spring groove mutual disposition just communicate with each other with the locating hole, the screw hole is located the outer end and communicates with each other with the outside, be provided with the connecting axle in the locating hole, the pulley sets up in the outer end of connecting axle, bush body cover is located on the connecting axle and is located the locating hole, the diameter of bush body is less than the internal diameter of locating hole, the spring sets up in the spring groove, the screw rod is screwed in the threaded hole, the apron passes through screwed connection on left knife rest and right knife rest.

As an improvement, the pressure plate is arranged on the side walls of the left grinding tool rest and the right grinding tool rest in a swinging mode, a pressing portion used for abutting against the inner side wall of the abrasive belt is formed at the swinging end of the pressure plate, and an adjusting screw connected with the left grinding tool rest and the right grinding tool rest is arranged at the connecting end of the pressure plate.

Compared with the prior art, the utility model has the advantages of: when the abrasive belt needs to be replaced, the cover plate is only needed to be detached, the screw rod is loosened, at the moment, the connecting shaft can move in the positioning hole, the abrasive belt is loosened, the abrasive belt can be taken out conveniently, meanwhile, new abrasive belt installation is facilitated, then the screw rod is screwed, the position of the connecting shaft is adjusted, and finally, the cover plate is compressed again.

Drawings

FIG. 1 is a schematic structural view of a knife sharpening mechanism according to an embodiment of the present invention;

fig. 2 is a schematic view of a connection structure of a positioning bush according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 2, the positioning bushing in this embodiment includes a bushing body 6, a cover plate 8, a top plate 91, a spring 9 and a screw rod 7, a threaded hole is formed in an outer wall of the bushing body 6, an external thread is provided on the screw rod 7, the screw rod 7 is connected to the threaded hole of the bushing body 6, meanwhile, in order to facilitate the setting of the threaded hole, a boss may be further formed on an outer side wall of the bushing body 6, the threaded hole is formed in the boss, the cover plate 8 is pressed against an end surface of the bushing body 6 through a screw, the top plate 91 is connected to the spring 9, the spring 9 presses the top plate 91 against the outer wall of the bushing body 6, and the screw rod 7 is screwed, so that the spring 9 can be pressed through the bushing body 6.

Further, in order to increase the effective area between the top plate 91 and the bushing body 6, the side wall of the top plate 91 opposite to the bushing body 6 forms an arc-shaped groove matched with the outer wall of the bushing body 6.

Meanwhile, in order to facilitate the rotation of the screw 7, a rotation portion 71 is formed at the outer end of the screw 7, and the rotation of the screw 7 is facilitated by providing the rotation portion 71.

In addition, referring to fig. 1 again, the present invention further provides a knife sharpening mechanism, which comprises a left knife sharpening frame 11, a right knife sharpening frame 12, an abrasive belt 2, a pressing plate 3 and a pulley 4, wherein the pulley 4 is disposed at two ends of the left knife sharpening frame 11 and the right knife sharpening frame 12, the abrasive belt 2 is sleeved on the pulley 4, the pressing plate 3 is disposed on the left knife sharpening frame 11 and/or the right knife sharpening frame 12, rear ends of the left knife sharpening frame 11 and the right knife sharpening frame 12 are hinged to each other, front ends of the left knife sharpening frame 11 and the right knife sharpening frame 12 are respectively provided with a positioning bushing structure, the positioning bushing structure comprises the positioning bushing, front ends of the left knife sharpening frame 11 and the right knife sharpening frame 12 are respectively provided with a positioning hole 13, a threaded hole and a spring groove 14, the threaded hole and the spring groove 14 are oppositely disposed and are communicated with the positioning hole 13, the threaded hole is located at an outer end and is communicated with an outside, the positioning hole 41 is disposed in the positioning hole 13, the pulley 4 is arranged at the outer end of the connecting shaft 41, the bushing body 6 is sleeved on the connecting shaft 41 and located in the positioning hole 13, the diameter of the bushing body 6 is smaller than the inner diameter of the positioning hole 13, the spring 9 is arranged in the spring groove 14, the screw 7 is screwed in the threaded hole, and the cover plate 8 is connected to the left knife grinding frame 11 and the right knife grinding frame 12 through screws.

Furthermore, in order to adjust the pressing force of the pressing plate 3 on the abrasive belt 2, the pressing plate 3 is arranged on the side walls of the left abrasive tool holder 11 and the right abrasive tool holder 12 in a swinging manner, a pressing portion for abutting against the inner side wall of the abrasive belt 2 is formed at the swinging end of the pressing plate 3, and an adjusting screw 5 connected with the left abrasive tool holder 11 and the right abrasive tool holder 12 is arranged at the connecting end of the pressing plate 3. Thus, the adjusting screw 5 is loosened, the pressing force of the pressing part of the abrasive belt 2 can be adjusted by rotating the pressing plate 3, and then the adjusting screw 5 is screwed.

When abrasive belt 2 needs to be replaced, only cover plate 8 needs to be detached, screw 7 is loosened, at the moment, connecting shaft 41 can move in positioning hole 13, abrasive belt 2 is loosened, abrasive belt 2 can be taken out conveniently, meanwhile, new abrasive belt 2 is convenient to install, screw 7 is screwed again, the position of connecting shaft 41 is adjusted, and finally cover plate 8 is compressed again.

Claims

1. A positioning bushing comprising a bushing body (6), characterized in that: the bushing structure is characterized by further comprising a cover plate (8), a top plate (91), a spring (9) and a screw rod (7), wherein a threaded hole is formed in the outer wall of the bushing body (6), an external thread is arranged on the screw rod (7), the screw rod (7) is connected to the threaded hole of the bushing body (6), the cover plate (8) is pressed on the end face of the bushing body (6) through the screw, the top plate (91) is connected with the spring (9), and the spring (9) presses the top plate (91) on the outer wall of the bushing body (6).

2. The alignment sleeve of claim 1, wherein: a boss is formed on the outer side wall of the bushing body (6), and the threaded hole is formed in the boss.

3. The alignment sleeve of claim 1, wherein: the side wall of the top plate (91) opposite to the lining body (6) forms an arc-shaped groove matched with the outer wall of the lining body (6).

4. The alignment sleeve of claim 1, wherein: the outer end of the screw (7) is provided with a rotating part (71).

5. The utility model provides a mechanism whets a knife, includes left knife rest (11), right knife rest (12), abrasive band (2), clamp plate (3) and pulley (4), pulley (4) set up in the both ends of left knife rest (11) and right knife rest (12), and on pulley (4) were located to abrasive band (2) cover, clamp plate (3) set up on left knife rest (11) and right knife rest (12), its characterized in that: the rear ends of the left knife grinding frame (11) and the right knife grinding frame (12) are hinged together, the front ends of the left knife grinding frame (11) and the right knife grinding frame (12) are respectively provided with a positioning bushing structure, the positioning bushing structure comprises the positioning bushing of claim 1, the front ends of the left knife grinding frame (11) and the right knife grinding frame (12) are respectively provided with a positioning hole (13), a threaded hole and a spring groove (14), the threaded hole and the spring groove (14) are oppositely arranged and are communicated with the positioning hole (13), the threaded hole is positioned at the outer end and is communicated with the outside, a connecting shaft (41) is arranged in the positioning hole (13), a pulley (4) is arranged at the outer end of the connecting shaft (41), the bushing body (6) is sleeved on the connecting shaft (41) and is positioned in the positioning hole (13), the diameter of the bushing body (6) is smaller than the inner diameter of the positioning hole (13), the spring (9) is arranged in the spring groove (14), the screw rod (7) is screwed in the threaded hole, and the cover plate (8) is connected to the left knife grinding frame (11) and the right knife grinding frame (12) through screws.

6. The sharpening mechanism of claim 5, wherein: the pressing plate (3) is arranged on the side walls of the left grinding tool rest (11) and the right grinding tool rest (12) in a swinging mode, a pressing portion used for pressing the inner side wall of the abrasive belt (2) is formed at the swinging end of the pressing plate (3), and an adjusting screw (5) arranged on the left grinding tool rest (11) and the right grinding tool rest (12) is arranged at the connecting end of the pressing plate (3).