Machining tool for needle jack cam of knitting machine

Abstract

The utility model discloses a knitting machine needle jack triangle processing tool, which comprises a base, a side top block, a spring and a screw, the base is provided with a groove, the groove bottom of the groove is a plane and is used as a reference surface, the front groove wall of the groove is vertical to the reference surface, the rear groove wall of the groove is a first inclined surface, the side top block is provided with a movable hole, and the movable hole is provided with a second inclined surface. A second inclined surface parallel to the first inclined surface is arranged on one side, directly facing the first inclined surface, of the side top block; the spring is located below the side ejecting block and opposite to the movable hole, the screw sequentially penetrates through the movable hole and the spring from top to bottom and then is screwed in the threaded hole, and the first inclined face is in sliding contact with the second inclined face. A plurality of workpieces are arranged in a row from front to back and placed in the groove of the tool, then the locking screw, the front groove wall of the groove and the side ejection block are matched to clamp the whole row of workpieces at the same time, and the machining precision can be guaranteed while batch production of parts is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of knitting machine workpiece manufacturing, and particularly relates to a processing tool for a knitting machine jack triangle. BACKGROUND

[0002] The jack triangle plays a knitting role when the knitting machine is lifted to the knitting height, and is a small part with high precision requirements. Because the part is small, it is suitable for batch clamping and processing, and the processing method is side edge milling.

[0003] The prior art often uses a magnetic chuck and a vacuum chuck to fix the part. The magnetic chuck fixing method requires that the workpiece material must have magnetic conductivity. The vacuum chuck fixing method produces a large environmental noise, and the small workpiece volume leads to insecure adsorption. The vacuum chuck and the magnetic chuck clamping may also be loose due to vibration during milling, and there are disadvantages such as being not conducive to cleaning iron filings. UTILITY MODEL CONTENTS

[0004] In view of the deficiencies of the prior art, the utility model provides a processing tool for a knitting machine jack triangle, which mainly solves the problem of insecure workpiece fixing of the prior art tool and potential safety hazards.

[0005] To achieve the above purpose, the utility model is implemented by the following technical scheme:

[0006] A processing tool for a knitting machine jack triangle, comprising a base, a side top block, a spring and a screw, the top surface of the base is provided with a protruding strip extending from front to back, the protruding strip is provided with a groove, the groove penetrates the top surface and the left and right side surfaces of the protruding strip, the groove bottom is a plane and serves as a reference surface, the front groove wall of the groove is perpendicular to the reference surface, the rear groove wall of the groove is a first inclined surface, and the first inclined surface is close to the front groove wall from top to bottom; the reference surface is provided with a threaded hole;

[0007] An active hole is formed in the side top block and penetrates the top surface and the bottom surface of the side top block, and the side of the side top block opposite to the first inclined surface is provided as a second inclined surface parallel to the first inclined surface.

[0008] The spring is located below the side top block and opposite to the active hole, the screw passes through the active hole and the spring from top to bottom and is then tightly screwed in the threaded hole, and the first inclined surface and the second inclined surface are in sliding contact.

[0009] Preferably, the reference surface is locally convex to form a positioning protruding strip, the positioning protruding strip is a strip-shaped protruding strip extending in the front-back direction, and the height of the top surface of the positioning protruding strip is lower than the height of the top surface of the protruding strip.

[0010] Preferably, the active hole in the side top block is a waist-shaped hole, and the length in the front-back direction of the waist-shaped hole is greater than the diameter of the screw.

[0011] Preferably, the first inclined surface forms an angle of 45° with the reference surface.

[0012] The processing tool for the knitting machine cam has the following beneficial effects:

[0013] By replacing the side top block with different lengths, the tool can be applied to the processing of workpieces with different lengths.

[0014] The single workpiece to be processed can be placed in the groove, the bottom surface of the workpiece is placed on the reference surface, and the front end surface of the workpiece is in contact with the front groove wall of the groove. When the screw is tightened, the side top block moves downward and compresses the spring. Since the second inclined surface of the side top block is in contact with the first inclined surface, the side top block will move forward during the downward movement, thereby abutting against the rear end surface of the workpiece. The front groove wall of the groove cooperates with the front end surface of the side top block to clamp the front and rear ends of the workpiece.

[0015] When a plurality of workpieces need to be processed in batches, the workpieces are placed in the groove of the tool in a row, and then the screw is locked. The front groove wall of the groove and the side top block cooperate to clamp the whole row of workpieces at the same time. The tool can meet the requirements of batch production of parts and can firmly clamp the workpieces to ensure the processing precision.

[0016] The tool of the present application can fix the workpiece in a mechanical structure, avoiding the requirement that the material must have magnetic permeability in the magnetic clamping method, and avoiding the requirement that the vacuum suction fixing method needs to blow air and vacuum all the time. The tool of the present application can also avoid the noise influence of vacuum suction and the hidden danger that small workpieces will shake during the magnetic clamping and vacuum suction fixing process, causing unstable clamping. The simple structure of the tool of the present application is also conducive to the cleaning of iron filings of the tool and the workpiece. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 is a first structure schematic view of the processing tool for the knitting machine cam of the embodiment of the present application;

[0018] Fig. 2 is a second structure schematic view of the processing tool for the knitting machine cam of the embodiment of the present application. DETAILED DESCRIPTION

[0019] The present application will be further described below in combination with the drawings and embodiments.

[0020] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0021] As Figs. 1-2 shown, the embodiment discloses a processing tool for knitting machine cam, which comprises a base 1, a side top block 2, a spring 3 and a screw 4. The top surface of the base 1 is provided with a protrusion 5 extending from front to back. The protrusion 5 is provided with a groove. The groove penetrates the top surface and the left and right side surfaces of the protrusion. The groove bottom is a plane and serves as a reference surface 6. The front groove wall 7 of the groove is perpendicular to the reference surface 6. The rear groove wall of the groove is a first inclined surface 8. The first inclined surface 8 is close to the front groove wall 7 from top to bottom. The reference surface 6 is provided with a threaded hole. The side top block 2 is provided with a movable hole 9. The movable hole 9 penetrates the top surface and the bottom surface of the side top block 2. The side of the side top block 2 opposite to the first inclined surface 8 is provided with a second inclined surface 10 parallel to the first inclined surface 8. The spring 3 is located below the side top block and opposite to the movable hole 9. The screw 4 penetrates the movable hole 9 and the spring 3 from top to bottom and is then tightly screwed in the threaded hole. The first inclined surface 8 and the second inclined surface 10 are in sliding contact.

[0022] The perspective top view of the workpiece for manufacturing the knitting machine cam adopted by the embodiment is shown in the figure. The left and right sides of the workpiece need to be milled.

[0023] When the processing tool for the knitting machine cam is used, the screw 4 is loosened. The spring 3 drives the side top block 2 to automatically lift up. The workpiece to be processed is placed in the groove. The bottom surface of the workpiece is placed on the reference surface 6. The front end surface of the workpiece is in contact with the front groove wall 7 of the groove. Then the screw 4 is tightened. When the screw 4 is tightened, the side top block 2 moves downward and compresses the spring 3. Since the second inclined surface 10 of the side top block 2 is in contact with the first inclined surface 8, the side top block 2 moves forward during the downward movement, thereby abutting against the rear end surface of the workpiece. The front groove wall 7 of the groove cooperates with the front end surface of the side top block 2 to clamp the front and rear ends of the workpiece.

[0024] Preferably, the reference surface 6 is partially formed into a positioning protrusion 11. Correspondingly, the bottom surface of the workpiece is provided with a positioning groove penetrating the front and rear end surfaces of the workpiece. The positioning groove of the workpiece cooperates with the positioning protrusion 11 to position the workpiece in the left and right directions, thereby avoiding the movement of the workpiece in the left and right directions.

[0025] The positioning protrusion 11 cooperates with the positioning groove in the bottom surface of the workpiece to limit the movement of the workpiece in the left and right directions. The front groove wall 7 of the groove cooperates with the front end surface of the side top block 2 to clamp the workpiece from the front and rear directions. The entire positioning tool is a purely mechanical structure for fixing the workpiece, which does not affect the milling processing from the left and right sides of the workpiece. The side top block 2 on the tool can be detached. By configuring side top blocks 2 with different lengths, the tool can fix single workpieces or multiple workpieces with different lengths.

[0026] In the embodiment, the positioning boss 11 is a strip-shaped boss extending in the front-rear direction, and the height of the top surface of the positioning boss 11 is lower than the height of the top surface of the convex strip 5. In other embodiments, the structure of the positioning boss 11 is not limited to this, for example, two front-rear circular positioning bosses 11 can also be used to achieve the left-right positioning of the workpiece to be machined. In other embodiments, the positioning boss 11 is not limited to being arranged on the reference surface 6, for example, a positioning boss can be formed by the front groove surface of the groove protruding rearward to cooperate with the positioning groove on the bottom surface of the workpiece.

[0027] The positioning boss 11 is not necessary, for example, a stop block can be separately arranged on the side surface of the base 1, one side of the workpiece is attached to the stop block, and after one side of the workpiece is milled, the workpiece is disassembled, the front-rear ends of the workpiece are exchanged, and the other side of the workpiece is milled. The positioning groove on the bottom surface of the workpiece is not necessary, and the corresponding positioning boss 11 is also not necessary, and other ways can also be used to limit the left-right position of the workpiece.

[0028] Preferably, the movable hole 9 on the side top block 2 is a waist-shaped hole, and the length in the front-rear direction is greater than the diameter of the screw 4. The length direction of the waist-shaped hole is closed at both ends, which is beneficial to avoid the screw 4 from sliding out of the waist-shaped hole. In other embodiments, the movable hole 9 can also have other shapes, for example, the movable hole 9 can also be a long hole penetrating through the front-rear ends of the side top block 2.

[0029] Preferably, the included angle between the first inclined surface 8 and the reference surface 6 is 45°, and the included angle between the second inclined surface 10 and the reference surface 6 is also 45°. In other embodiments, the included angle between the first inclined surface 8 and the second inclined surface 10 and the reference surface 6 can also be other angles, for example, 30° or 60°.

[0030] The above-described embodiments are only used to illustrate the technical solutions of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, therefore, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

Claims

1. A processing tool for a knitting machine jack, characterized by, The base, the side top block, the spring and the screw are included, the top surface of the base is provided with a convex strip extending from front to back, the convex strip is provided with a groove, the groove penetrates the top surface and the left and right side surfaces of the convex strip, the groove bottom is a plane and serves as a reference surface, the front groove wall of the groove is perpendicular to the reference surface, the rear groove wall of the groove is a first inclined surface, the first inclined surface is close to the front groove wall of the groove from top to bottom, and the reference surface is provided with a threaded hole; The side top block is provided with a movable hole, the movable hole penetrates the top surface and the bottom surface of the side top block, and the side of the side top block opposite to the first inclined surface is provided as a second inclined surface parallel to the first inclined surface; The spring is located below the side top block and opposite to the movable hole, the screw is sequentially screwed in the threaded hole from top to bottom after penetrating the movable hole and the spring, and the first inclined surface is in sliding contact with the second inclined surface.

2. The processing tooling for a knitting machine jack, according to claim 1, characterized in that, The reference surface is locally convex to form a positioning convex strip, the positioning convex strip is a strip-shaped convex strip extending in the front-back direction, and the height of the top surface of the positioning convex strip is lower than the height of the top surface of the convex strip.

3. The processing tooling for a knitting machine jack, according to claim 1, characterized in that, The movable hole on the side top block is a waist-shaped hole, and the length of the waist-shaped hole in the front-back direction is greater than the diameter of the screw.

4. The processing tooling for a knitting machine jack, according to claim 1, characterized in that, The included angle between the first inclined surface and the reference surface is 45°.

Images