CN218461782U

CN218461782U - Conical head sharpening machine

Info

Publication number: CN218461782U
Application number: CN202222886795.3U
Authority: CN
Inventors: 夏宇
Original assignee: Suzhou Repusi Electronics Co ltd
Current assignee: Suzhou Repusi Electronics Co ltd
Priority date: 2022-10-31
Filing date: 2022-10-31
Publication date: 2023-02-10
Anticipated expiration: 2032-10-31

Abstract

The utility model discloses a conical head sharpening machine, including emery wheel and the first driving motor who is connected with the emery wheel, the lateral margin of emery wheel still includes for the ground face: the upper surface of the bearing table inclines from top to bottom along the axial direction of the grinding wheel, and the first side edge of the upper surface is adjacent to the grinding surface; the collecting box is arranged below the lower end of the upper surface of the bearing table; and the rotating wheel is made of elastic plastic materials and is rotatably arranged above the bearing table, the axial direction of the rotating wheel is vertical to the axial direction of the grinding wheel, and the minimum distance between the rotating wheel and the upper surface is smaller than the outer diameter of the needle. The utility model discloses a conical head sharpening machine is equipped with the plummer, and the upper surface of plummer is the slope form, is favorable to the emery wheel to grind out conical needle point at the needle tip. The needle is automatically collected in the collection box by rolling on the ramp.

Description

Conical head sharpening machine

Technical Field

The utility model relates to a preparation of needle, in particular to a conical head sharpening machine for forming a conical needle point at the end part of a needle.

Background

A tapered needle tip can be ground at the very thin needle end using a grinding wheel. Existing sharpening machines typically require a person to hold one end of the needle and then bring the other end of the needle adjacent to a rotating grinding wheel. This is not only dangerous but also requires a high level of operator skill, as otherwise the ground tips will be inconsistent, especially for novice hands.

SUMMERY OF THE UTILITY MODEL

In order to solve at least one problem in the prior art, the utility model provides a conical head sharpening machine.

Conical head sharpening machine includes the emery wheel and the first driving motor who is connected with the emery wheel, and the lateral margin of emery wheel still includes for the grinding face: the upper surface of the bearing table inclines from top to bottom along the axial direction of the grinding wheel, and the first side edge of the upper surface is adjacent to the grinding surface; the collecting box is arranged below the lower end of the upper surface of the bearing table; and the rotating wheel is made of elastic plastic materials and is rotatably arranged above the bearing table, the axial direction of the rotating wheel is vertical to the axial direction of the grinding wheel, and the minimum distance between the rotating wheel and the upper surface is smaller than the outer diameter of the needle.

In some embodiments, the angle of inclination of the upper surface is 3-10 °.

In some embodiments, the wheel is fixed to a rotatable shaft extending in an axial direction perpendicular to the grinding wheel, and one end of the shaft is connected to the second drive motor.

In some embodiments, the device further comprises a frame, two ends of the rotating shaft are mounted on the frame through bearings, and one end of the rotating shaft is in transmission connection with the second driving motor.

In some embodiments, the width of the ground face is 2 to 3 times the circumference of the needle.

In some embodiments, the sharpener has a clear plastic cover with a feed opening above the high end of the upper surface of the carrier.

In some embodiments, the bearing platform is sleeved with a frame with a shape matched with the cross-sectional shape of the bearing platform, the edge of the frame is screwed into a bolt, the bolt is tightly abutted against the side surface of the bearing platform, and the position of the frame can be adjusted after the bolt is loosened.

The utility model discloses a conical head sharpening machine is equipped with the plummer, and the upper surface of plummer is the slope form, is favorable to the emery wheel to grind out conical needle point at the needle tip. The needle is automatically collected in the collection box by rolling on the bevel.

Drawings

Fig. 1 is a front view of a cone sharpening machine according to an embodiment of the present invention.

Fig. 2 is a top view of a cone sharpening machine according to an embodiment of the present invention.

Fig. 3 is a side view of a carrier according to an embodiment of the present invention.

Fig. 4 is a side view of a platform with a frame according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The utility model provides a conical head sharpening machine for the tip at the needle forms conical needle point. Referring to fig. 1 and 2, the cone nose sharpening machine includes a grinding wheel 1 and a first driving motor 2 connected to the grinding wheel 1, and a side edge of the grinding wheel 1 is a grinding face 3. The grinding wheel 1 is circular in shape, and has a structure at its center for direct or indirect connection with a motor shaft of the first drive motor 2. For example, a shaft hole connection structure is formed between the middle part of the grinding wheel 1 and the motor shaft of the first driving motor 2 in a key connection mode, so that the rotation output of the first driving motor 2 is transmitted to the grinding wheel 1, and the grinding wheel 1 is driven to rotate by taking the output shaft of the first driving motor 2 as a rotation center. Materially, the grinding wheel 1 may be made of hard abrasive particles bonded with an organic or inorganic binder. In one embodiment, the abrasive may be any one of boron carbide, silicon carbide, corundum, diamond, or a mixture of at least two thereof. Diamond is harder than others and can grind particularly hard needles, but diamond is relatively expensive and one skilled in the art can combine the properties of the material to be ground, the cost of grinding, and other considerations. In one embodiment, an inorganic bonding agent is used to bond the abrasive particles together to form the grinding wheel 1. In one embodiment, the inorganic binder may be selected from ceramic, magnesia, sodium silicate, or the like. In one embodiment, the organic binder may be a resin, rubber, shellac, and the like.

In one embodiment, referring to fig. 2, the side edge of the grinding wheel 1 is a grinding face 3. The grinding surface 3 is a surface where the grinding wheel 1 directly contacts a portion to be ground of the needle 13 when the grinding wheel 1 rotates to perform material reduction processing on the portion. For example, in the case of a round grinding wheel 1 having a thickness, it includes round double faces having a slightly larger area, and a face formed between edges of the double faces, a so-called grinding face 3.

In various embodiments of the present invention, referring to fig. 1 and 2, the cone head sharpening machine further includes a bearing table 4, a collecting box 5, and a rotating wheel 6. Referring to fig. 3, the upper surface 7 of the carrier 4 is inclined from top to bottom along the axial direction of the grinding wheel 1, and a first side edge 8 of the upper surface 7 is adjacent to the grinding surface 3. The collecting box 5 is arranged below the lower end of the upper surface 7 of the carrier table 4. The rotating wheel 6 is rotatably arranged above the bearing platform 4, and the axial direction of the rotating wheel 6 is vertical to the axial direction of the grinding wheel 1. The material of all or at least the outer layer of the runner 6 is elastic plastic, and the minimum distance between the runner 6 and the upper surface 7 is smaller than the outer diameter of the needle. In use, the needles 13 are placed on the upper surface 7 of the carrier table 4 with the length direction of the needles 13 being substantially perpendicular to the axial direction of the grinding wheel 1. The needles 13 are placed with their major part on the upper surface 7 of the carrier table 4 and with their other part over the first side edge 8 of the upper surface 7 of the carrier table 4 and extending towards the grinding surface 3 of the grinding wheel 1, with their ends in contact with the grinding surface 3. The grinding wheel 1 is rotated by the first driving motor 2, and since the grinding wheel 1 has an axial direction substantially perpendicular to the needle 13, the grinding wheel 1 grinds the end of the needle 13 along the length of the needle 13. The grinding face 3 of the round grinding wheel 1 is arc-shaped, resulting in that the grinding amount of the tip of the needle 13 is larger than the grinding amount away from the tip, so that the tip of the needle forms a tapered tip.

The upper surface 7 of the carrier 4 is inclined from top to bottom in the axial direction of the grinding wheel 1, and when the needle is placed at the upper end of the upper surface 7 of the carrier 4, the needle rolls from the upper end to the lower end of the upper surface 7 under the action of gravity. In use, the wheel 6 is rotated, and in particular the wheel 6 is rotated in the direction of the needle movement. Since the gap between the runner 6 and the upper surface 7 of the carrier 4 is smaller than the outer diameter of the needle, the needle can be rolled into contact with the runner 6, the runner 6 screwing the needle into the gap between the runner 6 and the upper surface 7 by means of the friction between the runner 6 and the needle. The runner 6 is of a resilient plastics material which is preferably not so hard as to crush the needle and is not so soft as to form too deep an indentation in the contact with the needle which would be detrimental to the rotation of the needle. The resilient plastic may be, for example, nylon, polyethylene, polypropylene, or the like. After the needle is screwed into the gap between the rotating wheel 6 and the upper surface 7, since the gap between the needle and the upper surface 7 of the bearing table 4 is smaller than the outer diameter of the needle, and the needle is made of a metal material harder than the elastic plastic, when the rotating wheel 6 extrudes the needle, the elastic plastic generates certain elastic deformation, the elastic force generated by the elastic deformation increases the friction force between the needle and the elastic plastic, and the friction force is enough to resist the axial grinding force applied to the needle when the needle is ground, so that the needle is prevented from being knocked off by the grinding wheel 1. In this process, the runner 6 can prevent the needle from being subjected to the grinding force of the grinding wheel 1 to become a flying needle, and also control the rolling speed of the needle. Since the needle is thin, typically having an outer diameter below 1mm, the needle will rotate through many revolutions as it passes through the gap between the rotor 6 and the upper surface 7. During the rotation, the end of the needle rolls on the grinding surface 3 of the grinding wheel 1 in the axial direction of the grinding wheel 1, and a tapered needle point is formed at the end of the needle.

In this embodiment, since the upper surface 7 of the carrier table 4 is inclined and the needles are rolled down, i.e. the needle position is lower and lower, the ends of the needles will give the grinding surface 3 a certain pressure during the needle movement, which is advantageous for sufficient grinding to form a well-tapered needle tip.

In this embodiment, since the upper surface 7 of the carrier 4 is inclined, the weight of the needle is again a factor of the needle rolling forward after the needle passes through the gap between the runner 6 and the upper surface 7. The needles leave the carrier table 4 from the lower end of the upper surface 7 of the carrier table 4, fall into the collecting box 5 below and are automatically collected.

In some embodiments, the angle of inclination of the upper surface 7 is 3-10 °. The upper surface 7 has a suitably large inclination to facilitate free rolling of the needles on the upper surface 7 of the carrier table 4. However, too large a tilt angle can have such adverse effects: the amount of the needle end portion lowered per unit time by the main portion of the needle on the upper surface 7 of the carrier 4 is larger than the amount of the needle end portion lowered by the grinding of the grinding wheel 1, so that the needle is inclined and a regular tapered needle point cannot be formed. The inclination of the upper surface 7 of this embodiment is preferably 3-10 °.

In some embodiments, the width of the grinding face 3 is 2 to 3 times the circumference of the needle. The width of the grinding face 3 refers to the width of the grinding face 3 in the axial direction of the grinding wheel 1. The end of the needle will leave the grinding surface 3 by 2 to 3 revolutions on the grinding surface 3. Although the needle is thin and can rotate for several revolutions in the gap between the wheel 6 and the upper surface 7 of the carrier 4, if the grinding surface 3 is too wide, the end of the needle will still be in contact with the grinding surface 3 after the needle has left the gap between the wheel 6 and the upper surface 7 of the carrier 4, which may result in "flying needles". For safety reasons, the width of the grinding surface 3 needs to be limited.

In some embodiments, referring to fig. 1 and 2, the rotating wheel 6 is fixed to a rotating shaft 10 which is rotatable along an axial direction perpendicular to the grinding wheel 1, and one end of the rotating shaft 10 is connected to a second driving motor 11. The second driving motor 11 can drive the rotating shaft 10 to move, so that the rotating wheel 6 is driven to rotate. Furthermore, the sharpening machine also comprises a frame 12, two ends of the rotating shaft 10 are mounted on the frame 12 through bearings, and one end of the rotating shaft 10 is in transmission connection with a second driving motor 11.

In some embodiments, the sharpening machine has a transparent plastic cover (not shown) and a feed inlet (not shown) is provided above the high end of the upper surface 7 of said carrier table 4. A plastic cover covers the grinding wheel 1, the bearing table 4, the rotating wheel 6 and the like to prevent the operator from being hurt by 'flying needles' caused by accidents. In order to facilitate an operator to master the internal condition of the sharpening machine, the plastic cover is made of transparent materials, such as acrylic, ABS, PC and the like. In addition, in order to feed materials to the sharpening machine, a rectangular feed inlet penetrating through the plastic cover is formed in the plastic cover. The operator places the needles one by one from the feed opening, which fall exactly onto the upper surface 7 of the carrier table 4 and then slide under gravity along the upper surface 7 of the carrier table 4 to the turning wheel 6.

In some embodiments, referring to fig. 4, a frame 14 having a shape matching with the cross-sectional shape of the carrier 4 is sleeved on the carrier 4, a bolt 15 is screwed into the edge of the frame 14, the bolt 15 abuts against the side surface of the carrier 4, and after the bolt 15 is loosened, the position of the frame 14 is adjustable. One edge of the frame 14 is located on the upper surface 7 of the carrier 4 and forms a rib. The operator can adjust the position of the frame 14 left or right according to the length of the needle.

What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.

Claims

1. Conical head sharpening machine, including the emery wheel and with the first driving motor that the emery wheel is connected, the lateral margin of emery wheel is the grinding face, its characterized in that still includes:

the upper surface of the bearing table inclines from top to bottom along the axial direction of the grinding wheel, and the first side edge of the upper surface is adjacent to the grinding surface;

the collecting box is arranged below the lower end of the upper surface of the bearing table; and

the rotating wheel made of elastic plastic materials is rotatably arranged above the bearing table, the axial direction of the rotating wheel is perpendicular to the axial direction of the grinding wheel, and the minimum distance between the rotating wheel and the upper surface is smaller than the outer diameter of the needle.

2. The bit sharpening machine as recited in claim 1, wherein said upper surface is inclined at an angle of 3-10 °.

3. The bit sharpening machine of claim 1, wherein said rotatable wheel is mounted on a rotatable shaft oriented in an axial direction perpendicular to said grinding wheel, said shaft having one end connected to a second drive motor.

4. The cone head sharpening machine of claim 3, further comprising a frame, wherein two ends of the rotating shaft are mounted on the frame through bearings, and one end of the rotating shaft is in transmission connection with a second driving motor.

5. The bit sharpening machine of claim 1 wherein said ground surface has a width of 2 to 3 times a circumference of said needle.

6. A cone sharpening machine according to claim 1, characterized in that the machine has a transparent plastic cover, and that a feed opening is provided above the high end of the upper surface of said carrier.

7. The cone head sharpening machine according to claim 1, wherein a frame having a shape adapted to a cross-sectional shape of said carrier is fitted over said carrier, a bolt is screwed into an edge of said frame, said bolt abuts against a side surface of said carrier, and after said bolt is loosened, a position of said frame is adjustable.