Round needle surface pattern grinding device

Abstract

The utility model discloses a round needle surface pattern grinding device which comprises a controller, a machine box, a feeding system, a grinding head and a rotary chuck, a round needle is clamped in a clamping hole of the rotary chuck, the feeding system comprises a transverse feeding air cylinder, a longitudinal feeding air cylinder, a vertical feeding air cylinder and a rotary feeding mechanism which are sequentially connected, and the grinding head is arranged on the machine box. The tail end of the grinding head is obliquely arranged and tangent to the machining circumferential face of the round needle to be ground, and a torque sensor is arranged on the rotary feeding mechanism and connected with the controller. The feeding system arranged on the grinding device can achieve transverse, longitudinal, vertical and swing feeding, multi-dimensional grinding feeding control over the round needle can be achieved, meanwhile, the rotary feeding mechanism accurately controls the feeding amount through swing, the grinding force can be continuously monitored, the grinding device is suitable for flexible machining of various patterns on the surface of the round needle, the machining quality of the round needle is guaranteed, and the machining efficiency is improved. And the round needle processing efficiency and the yield are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of round needle processing, in particular to a device for grinding patterns on the surface of a round needle. Background Art

[0002] After the circular needle is formed, the surface needs to be polished to grind the required pattern on a specific surface. At present, the circular needle polishing process used in production has a low degree of automation. Since the circular needle shaft diameter is small, it is easy to bend and deform under force. Therefore, the polishing process generally adopts manual feed control, and the grinding force is controlled according to the processing experience of the operator. As a result, the product yield cannot be reliably guaranteed and the production efficiency is low. The feed system of the needle grinding machine in the prior art has a relatively single feed dimension and lacks flexibility and adaptability. It is not suitable for surface pattern polishing of circular needles with complex surface shapes. In addition, the clamping of the circular needle to be ground requires manual operation, and the circular needle polishing process must have someone on duty to advance production, which cannot effectively improve mass production efficiency. Utility Model Content

[0003] The purpose of the present utility model is to overcome the defects of the prior art and provide a circular needle surface pattern grinding device to solve one or more problems raised in the above background technology.

[0004] In order to achieve the above purpose, the technical solution of the utility model is as follows:

[0005] A circular needle surface pattern grinding device includes a controller, a chassis, and a feed system, a grinding head and a rotary chuck located inside the chassis. The head end of the needle to be ground is clamped in the clamping hole in the center of the rotary chuck, and along the transverse direction, the feed system is arranged on one side of the needle to be ground. It includes a transverse feed cylinder, a longitudinal feed cylinder, a vertical feed cylinder and a rotary feed mechanism connected in sequence. The grinding head is arranged at the end of the rotary feed mechanism. The transverse feed cylinder, the longitudinal feed cylinder, the vertical feed cylinder and the rotary feed mechanism are respectively connected to the controller for automatically driving the multi-dimensional feed of the grinding head according to preset parameters. The end of the grinding head is tilted and tangent to the processed circumference of the needle to be ground. A torque sensor is provided on the rotary feed mechanism, and the torque sensor is connected to the controller for driving the rotary feed mechanism to rotate and adjust the grinding force according to the torque signal.

[0006] Furthermore, it also includes a transition channel and a feeding mechanism. The feeding mechanism includes a loading bin and a pushing cylinder. The round needle is placed in the loading bin. A feeding trough is arranged horizontally in the loading bin. The feeding trough can only accommodate one round needle. Feeding holes connected to the two ends of the feeding trough are arranged on the side vertical plates on both sides of the loading bin. The feeding holes are adapted to the maximum axial diameter of the round needle. The transition channel is located on one side of the loading bin and is close to the rotating chuck. The transition channel is arranged horizontally and extends to connect the feeding hole and the feeding trough. The pushing cylinder is arranged on the other side of the loading bin. Its push rod passes through the feeding hole and pushes the round needle to slide into the clamping hole. The central axes of the feeding trough, feeding hole, transition channel and clamping hole are collinear.

[0007] Furthermore, the transition channel is located on the transition mechanism, and the transition mechanism and the grinding head are respectively located on both sides of the needle to be ground. The transition mechanism includes a finger cylinder and a pair of splints driven to open and close by the finger cylinder. After the splint pair is closed, a circular hole-shaped transition channel is formed in the middle thereof. After the splint pair is opened, it exits the processing area on the outer peripheral side of the needle to be ground.

[0008] Furthermore, an automatic material picking mechanism is provided in the loading bin, which includes a material picking plate and a material picking cylinder. The material picking plate is provided on the end plate of the loading bin, and a material picking plate sliding space is provided between the end of the material placing plate at the bottom of the loading bin and the inner side surface of the end plate. The material picking plate is driven by the material picking cylinder to slide up and down in the sliding space, and the material picking trough is located at the top of the material picking plate.

[0009] Furthermore, the material placing plate is inclined toward one side of the material taking plate.

[0010] Furthermore, a limit seat is provided on the other side of the charging bin, a push rod guide hole is opened on the limit seat, and the limit seat cooperates with the root of the push rod to limit.

[0011] Furthermore, a material receiving box is provided directly below the needle to be rounded.

[0012] Compared with the prior art, the circular needle surface pattern grinding device of the present invention has the following beneficial effects:

[0013] The feeding system of the grinding device can realize horizontal, longitudinal, vertical and swing feeding, and can realize multi-dimensional grinding feed control of circular needles. At the same time, the rotary feed mechanism accurately controls the feed amount through swinging, and can continuously monitor the grinding force to prevent the circular needles from bending due to excessive grinding force. The grinding device can automatically control the grinding feed amount according to the grinding force, and there is no need for the operator to manually input different feed amounts for processing according to different materials. The control is flexible and changeable, and it is suitable for the flexible processing of circular needles with complex structures and various patterns on the surface of circular needles, and ensures the processing quality of circular needles, thereby improving the processing efficiency and yield rate of circular needles. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1This is a schematic diagram of the external structure of the grinding device of the present utility model;

[0015] Figure 2 This is a three-dimensional diagram of the internal structure of the grinding device of the present invention;

[0016] Figure 3 This is another perspective view of the internal structure of the grinding device of the present invention;

[0017] Figure 4 for Figure 2 Structural stereogram of the middle transition mechanism;

[0018] Figure 5 for Figure 2 Structural stereogram of the middle loading mechanism.

[0019] In the figure: 1. Chassis; 11. Processing chamber; 12. Display; 13. Electric control box; 14. Controller; 15. Indicator light; 2. Feed system; 21. Horizontal feed cylinder; 22. Longitudinal feed cylinder; 23. Vertical feed cylinder; 24. Rotary feed mechanism; 3. Transition mechanism; 31. Finger cylinder; 32. Pair of splints; 33. Transition channel; 4. Loading mechanism; 41. Limit seat; 42. First side vertical plate; 43. Second side vertical plate; 44. Material placement plate; 45. Material picking plate; 451. Material picking trough; 46. Material picking cylinder; 5. Pushing cylinder; 6. Rotary chuck; 7. Grinding head; 8. Material receiving box. DETAILED DESCRIPTION

[0020] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only the best embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] A circular needle surface pattern grinding device according to this embodiment, such as Figure 1-Figure 5 As shown, the grinding device is a movable box structure, and its chassis 1 is an upper and lower layer structure, the upper layer is a closable processing chamber 11, and the lower layer is an electric control box 13 for installing a pneumatic system and an electric control system. A display screen is set outside the chassis 1 to display the processing coordinates, processing force, etc. in real time. A controller 14 is suspended outside the chassis 1 through a cantilever. The controller 14 is connected to each pneumatic actuator and electric actuator to control their motion parameters, and processing parameters such as processing pattern form, processing axis diameter, processing coordinates, etc. can be input into the controller; the needle to be rounded is automatically clamped by the rotating chuck 6 in a horizontal transverse direction, and the rotating chuck 6 drives the processing axis surface of the needle to be rounded to rotate. The grinding head 7 is located on one side of the needle to be rounded. In order to meet the multi-dimensional feeding of the grinding head 7, as shown in FIG. Figure 2-Figure 3As shown, the feeding system 2 includes a transverse feeding cylinder 21, a longitudinal feeding cylinder 22, a vertical feeding cylinder 23 and a rotary feeding mechanism 24. The transverse feeding cylinder 21 is fixed on the table in the processing chamber 11, and is offset and parallel to the needle to be rounded, and is used to drive the grinding head 7 to move transversely to a preset transverse coordinate and to feed transversely. The longitudinal feeding cylinder 22 is installed on the driving end of the transverse feeding cylinder 21, and is used to drive the grinding head 7 to move longitudinally to a preset longitudinal coordinate and to feed longitudinally. The vertical feeding cylinder 23 is installed on the driving end of the longitudinal feeding cylinder 22 and can move transversely synchronously with the vertical feeding cylinder 23, and is used to drive the grinding head 7 to move vertically to a preset vertical coordinate and to feed vertically. The transverse feeding cylinder 21, the longitudinal feeding cylinder 22 and the vertical feeding cylinder 23 move the grinding head 7 to the starting point of the processing coordinate of the needle to be rounded.

[0022] The rotary feed mechanism 24 is rotated and swung to feed from the initial angle. The rotary feed mechanism 24 is installed on the driving end of the vertical feed cylinder 23 through the installation plate. The grinding head 7 has its own grinding motor, which is installed at the end of the rotary feed mechanism 24. The grinding head 7 is tilted, and its axis has an angle of 45°-60° with the vertical direction. First, it is conducive to the safe collection of flying chips, and second, it is convenient to use the rotary mechanism to control the grinding force. The rotary feed mechanism 24 gradually feeds from the initial position to apply grinding pressure. A torque sensor is set on the rotary feed mechanism 24. During feeding, the force applied during the feeding process is monitored according to the feedback torque signal, and the feed amount is automatically and continuously controlled. When the grinding head 7 contacts and grinds the rotating circular needle to be ground, it is subjected to a normal thrust. When the torque generated by the thrust is greater than the preset torque, the rotary feed mechanism 24 passively swings to fine-tune the feed amount of the grinding head 7 to prevent deformation of the circular needle due to excessive grinding pressure. In addition, an angle signal encoder is provided in the rotary feed mechanism 24 to collect the rotary feed angle of the rotary feed mechanism 24. When the feed angle is greater than the preset angle, the indicator light 15 alarms and the machine stops.

[0023] Of course, it is understandable that during processing, the longitudinal feed cylinder 22 and the vertical feed cylinder 23 can also be used to control the longitudinal and vertical feed, combined with the grinding pressure control of the rotary feed mechanism 24 to control the directional precise grinding feed, and the transverse feed cylinder 21 drives the grinding head 7 to move axially to feed the processing surface.

[0024] In order to realize automatic clamping of the round needle, the grinding device also includes a transition channel 33 and a feeding mechanism 4. The transition channel 33 is used to limit the round needle and connect the feeding mechanism 4 with the clamping hole of the rotary chuck 6. The transition channel 33 is used to transport the round needle to the clamping hole of the rotary chuck 6 through the transition channel 33. In order to facilitate processing, after the round needle is transported and clamped, its upper part or the entire processing surface should be exposed in the processing area. Therefore, the transition channel 33 can be a semicircular lower bracket or two semicircular grooves that can be opened and closed, such as Figure 4As shown, this embodiment preferably has a closed transition channel 33 constructed by a transition mechanism 3. The number of transition mechanisms 3 is selected according to the space between the feeding mechanism 4 and the rotary chuck 6. The transition mechanism 3 includes a finger cylinder 31 and a splint pair 32 driven to open and close by the finger cylinder 31. Semicircular grooves are provided on two opposite clamping surfaces of the splint pair 32. When the splint pair 32 is buckled, the two semicircular grooves are buckled to form a transition channel 33 that is adapted to the maximum outer diameter of the round needle. The transition mechanism 3 and the grinding head 7 are respectively located on both sides of the circular needle to be ground. When entering the processing state, the splint pair 32 is rotationally symmetrically opened up and down, and exits the processing area on the outer peripheral side of the circular needle to be ground.

[0025] The feeding mechanism 4 includes a loading bin and a pushing cylinder 5, and the round needle is placed in the loading bin. The loading bin is surrounded by a first side vertical plate 42, a second side vertical plate 43 and two end vertical plates, and is formed with a material placement plate 44 at the bottom. A feeding trough 451 is arranged horizontally in the loading bin. The feeding trough 451 is a semicircular structure and can only accommodate one round needle. A feeding hole is provided on the first side vertical plate 42 and the second side vertical plate 43, and the aperture of the feeding hole should be adapted to the maximum shaft diameter of the round needle. The central axis of the clamping hole, the transition channel 33, the feeding trough 451 and the feeding hole is collinear. The pushing cylinder 5 is located on the outside of the second side vertical plate 43, and its needle-shaped push rod can pass through the feeding hole on the second side vertical plate 43 and push the end of the round needle to slide until it is inserted into the clamping hole.

[0026] In order to avoid manual loading and realize automatic loading of round needles, a number of round needles are placed in the loading bin. The automatic material picking mechanism in the loading bin can automatically separate and clamp one round needle for transportation each time. The loading hole should be higher than the pile of round needles to avoid the round needles from jumping out of the loading hole due to processing vibration. Figure 5 As shown, the automatic feeding mechanism includes a feeding plate 45 and a feeding cylinder 46. The feeding plate 45 can be slidably arranged on the end plate of the loading bin, and the feeding trough 451 is located at the top of the feeding plate 45. A sliding space for the feeding plate 45 is provided between the end of the feeding plate 44 and the inner side surface of the end plate. The feeding plate 45 descends to the bottom of the round needle pile, and the round needle automatically rolls into the feeding trough 451 at its upper end. Since the feeding trough 451 can only accommodate one round needle, as the feeding plate 45 ascends, the picked-up round needle is automatically transported to the height of the loading hole for pushing and conveying. When the number of round needles gradually decreases, it is more difficult to pick up the feeding trough 451. For this reason, the feeding plate 44 should be tilted to one side of the feeding plate 45. Under the action of gravity, the round needle automatically rolls into the feeding trough 451.

[0027] In addition, in order to prevent the push rod of the push cylinder 5 from over-pushing the material, a limit seat 41 is provided on the outer side of the second side vertical plate 43. The push rod guide hole on the limit seat 41 is coaxial with the feeding hole. A limit block is provided at the root of the push rod, which is tightly matched with the limit seat 41, so as to realize mechanical stop limit.

[0028] In addition, a material collecting box 8 is provided in the grinding chip collecting area just below the needle to be rounded, so as to automatically collect the flying chips and keep the table clean.

[0029] The specific connection means for the connection between the components, electrical actuators, drivers, display 12 and controller 14 for realizing automatic control can be referred to in the above description. The connection relationships and connection means not mentioned are well known in the art and are therefore not described in detail herein.

[0030] The directional words "upper", "lower", "outer", "end", "side" and so on mentioned in this article are described based on the Figure 1-Figure 5 These terms are mainly used to better describe the present invention and its embodiments, and are not intended to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation;

[0031] Furthermore, some of the above terms may be used to express other meanings besides indicating a direction or position relationship. For example, the term "upper" may also be used to express a certain dependency or connection relationship in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0032] In addition, when the embodiments of the present invention involve descriptions of "first" and "second," the descriptions of "first," "second," etc. are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly specifying the number of the technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one of such features.

[0033] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A circular needle surface pattern grinding device, characterized by: The invention comprises a controller, a chassis, a feeding system, a grinding head and a rotary chuck located in the chassis, the head end of the needle to be rounded is clamped in the clamping hole in the center of the rotary chuck, and along the transverse direction, the feeding system is arranged on one side of the needle to be rounded, and comprises a transverse feeding cylinder, a longitudinal feeding cylinder, a vertical feeding cylinder and a rotary feeding mechanism connected in sequence, the grinding head is arranged at the end of the rotary feeding mechanism, the transverse feeding cylinder, the longitudinal feeding cylinder, the vertical feeding cylinder and the rotary feeding mechanism are respectively connected to the controller, and are used to automatically drive the multi-dimensional feeding of the grinding head according to preset parameters, the grinding head is tilted and tangent to the processed circumference of the needle to be rounded, and a torque sensor is provided on the rotary feeding mechanism, and the torque sensor is connected to the controller, and is used to drive the rotary feeding mechanism to rotate and adjust the grinding force according to the torque signal.

2. The circular needle surface pattern grinding device according to claim 1, characterized in that: It also includes a transition channel and a feeding mechanism, the feeding mechanism includes a loading bin and a pushing cylinder, the round needle is placed in the loading bin, and a feeding trough is arranged horizontally in the loading bin, the feeding trough can only accommodate one round needle, and the side vertical plates on both sides of the loading bin are provided with feeding holes connected to the two ends of the feeding trough, and the feeding holes are adapted to the maximum axial diameter of the round needle, the transition channel is located on one side of the loading bin and close to the rotary chuck, the transition channel is arranged horizontally and extends to connect the feeding hole and the feeding trough, the pushing cylinder is arranged on the other side of the loading bin, its push rod passes through the feeding hole and pushes the round needle to slide into the clamping hole, and the central axis of the feeding trough, the loading hole, the transition channel and the clamping hole are collinear.

3. The circular needle surface pattern grinding device according to claim 2, characterized in that: The transition channel is located on the transition mechanism, and the transition mechanism and the grinding head are respectively located on both sides of the needle to be ground. The transition mechanism includes a finger cylinder and a pair of splints driven to open and close by the finger cylinder. When the splint pair is closed, a circular hole-shaped transition channel is formed in the middle thereof. When the splint pair is opened, it withdraws from the processing area on the outer peripheral side of the needle to be ground.

4. The circular needle surface pattern grinding device according to claim 2, characterized in that: An automatic material picking mechanism is provided in the loading bin, and the automatic material picking mechanism includes a material picking plate and a material picking cylinder. The material picking plate is provided on the end vertical plate of the loading bin, and a material picking plate sliding space is provided between the end of the material placing plate located at the bottom of the loading bin and the inner side surface of the end vertical plate. The material picking plate is driven by the material picking cylinder to slide up and down in the sliding space, and the material picking trough is located at the top of the material picking plate.

5. The circular needle surface pattern grinding device according to claim 4, characterized in that: The material placing plate is inclined toward one side of the material taking plate.

6. The circular needle surface pattern grinding device according to claim 4, characterized in that: A limit seat is provided on the other side of the charging bin, a push rod guide hole is opened on the limit seat, and the limit seat cooperates with the root of the push rod to limit.

7. The circular needle surface pattern grinding device according to claim 1, characterized in that: A material receiving box is provided directly below the needle to be rounded.

Images