CN102528578A - Automatic precise grinding machine for jaw of nail clippers - Google Patents

Abstract

The invention discloses an automatic precision grinding machine for the jaws of nail clippers, which includes a frame and a transmission mechanism arranged on the frame, and is characterized in that one side of the surface plane of the frame is provided with a device for intermittently moving left and right relative to the frame. Workbench A and the other side are provided with workbench B which moves back and forth relative to the frame, and workbench A and workbench B are arranged oppositely; The manipulator is provided with a grinding device on the other workbench. In this way, the automatic precision grinding of the knife edge of the nail clipper jaw is realized, the production efficiency is greatly improved, the product consistency is good, the product qualification rate is high, the generation of waste products is effectively reduced, it is beneficial to environmental protection, and the unit cost of the product is reduced.

Description

Automatic precision grinding machine for nail clipper jaws

technical field

The invention relates to a knife-edge grinding device, in particular to a special grinding mechanical equipment for automatic precision grinding of nail clipper knife-edges.

Background technique

In the current production of nail clippers, the cutting edge of the nail clipper jaw is shown in Figure 1. It can be seen from the figure that the cutting edge is a scissors cutting edge, and the grinding of the cutting edge is all done by manual grinding. In today's highly industrialized development, it is no longer suitable. For large-scale production, it is particularly urgent to develop mechanical equipment for automatic grinding of jaws, and there are many problems in manual grinding. Only the above work experience can achieve a balanced and unified technique, but due to manual operation, the uncertainty of human factors is unavoidable. Even experienced hands cannot achieve uniform size of all knife edges, resulting in poor consistency of products, resulting in defective or waste products. More, cause resource waste, be unfavorable for environmental protection production; Moreover, rely on the labor intensity of manual grinding mouth, the production efficiency is low, the quality is uneven, is unfavorable for forming automation, large-scale production.

Contents of the invention

The purpose of the present invention is to solve the above-mentioned problems existing in the grinding of the jaws of the existing nail clippers, by imitating the manual operation method through the manipulator, and according to the manual grinding process, a kind of nail clippers capable of being polished at one time is provided in a targeted manner. The equipment structure scheme of the sharp edge of the jaw, the specific technical scheme is as follows:

An automatic precision grinding machine for the jaws of nail clippers, which includes a frame and a transmission mechanism arranged on the frame. workbench A, on the other side is set a workbench B that moves back and forth relative to the rack (horizontal repeated movement), and workbench A and workbench B are set opposite to each other; There is a manipulator for holding nail clippers, and another workbench is equipped with a grinding device. When the nail clipper is clamped on the manipulator, it moves on the frame with the workbench. At the same time, the grinding device moves with another workbench. Taking the workbench where the nail clipper is located as a reference, the workbench where the grinding device is located The table moves forward, backward, left, and right relative to the workbench where the nail clippers are located, even if the jaws of the nail clippers are in contact with the grinding device, the jaws of the nail clippers are ground.

As a further description of the above-mentioned scheme, there are more than one manipulators, which are evenly distributed in the circumference of a working disk, and the working disk is arranged between fixed plates parallel to each other, and the fixed plates are perpendicular to the bottom plate A of the workbench A, The working disc is driven to rotate intermittently by the intermittent motion mechanism in the transmission mechanism; Preferably, there are 12 manipulators, that is, 12 nail clipper clamping stations are arranged on the working disk, and the angle between each station is 30°. When the nail clipper is clamped on the manipulator, it moves longitudinally to the worktable B (to the right) along with the worktable A on the frame, so that the nail clipper jaws are in contact with the grinding device; at the same time, the grinding device works with the workbench B Lateral reciprocating movement (back and forth reciprocating movement) to grind the jaws of the nail clippers; after the grinding is completed, worktable A moves longitudinally (to the left) on the frame, leaves workbench B, and the worktable rotates to prepare for the next Work station grinding.

As a further illustration of the above-mentioned scheme, the manipulator includes a fixed chuck and a movable chuck, and the fixed chuck and the movable chuck are arranged opposite to form an opening matching with the nail clippers. There is a return spring B; the fixed chuck is set on the working disk; the lower end of the movable chuck is hinged on the working disk, the upper end of the movable chuck is hinged to one end of a lever C, and the lower end of the movable chuck is hinged to the working disk Above, the lever C is set on the work plate through the fulcrum C, and the other end of the lever C is connected with the cam B or the hydraulic drive device or the pneumatic drive device. Further, the cam B is set on the worktable A, and the position of the cam B is fixed. When the manipulator in the working disc is in the horizontal position relative to the abrasive belt, the working profile of the cam B lifts up the end of the lever C connected to it, the lever C rotates around the fulcrum C, and the movable chuck moves to the fixed chuck along with the lever C , clamp the nail clipper workpiece, and then move with workbench A to workbench B, so that the position of the nail clipper is stable when it presses the abrasive belt.

As an improvement of the above-mentioned solution, an elastic rubber strip is provided on the inside of the movable chuck, the lever C is an L-shaped structure, the fulcrum C is set at the bending part of the lever C, and the connecting end of the lever C and the cam B is provided with rolling bearings. The elastic strip is preferably silica gel. The elastic rubber strip is relatively soft to ensure that the nail clippers will not be damaged when pressed, and the rolling bearing can reduce the movement wear of the lever C and the cam.

As a further illustration of the above solution, the intermittent motion mechanism includes a coaxial notched disc and a pin disc, and a sheave coaxial with the working disc, and the sheave is provided with several arc grooves and pin grooves , the arc grooves and the pin grooves are spaced apart from each other on the circumference of the corresponding sheaves, wherein the arc grooves are matched and engaged with the notched discs, and the pin grooves are engaged with the pin A of the dial plate, and are driven by the transmission mechanism. Preferably, the number of arc-shaped grooves and the number of pin grooves are the same as the number of stations (manipulators) on the work plate, both of which are 12. Further, the depth of the pin groove is deeper than that of the arc groove. The grooved wheel moves intermittently under the action of the notched disc and the dial, and the intermittent time is the grinding cycle of one station. It should be pointed out that after entering the next station, due to the rotation of the work disc, the movable chuck of the manipulator will loosen the blanking after the grinding is completed.

As another case of the intermittent motion mechanism, the intermittent motion mechanism includes a double-layer conjugate cam and a double-layer driven plate coaxial with the working disc, each driven plate is provided with several toggle rollers, the first layer The toggling roller and the second-level toggling roller are arranged at intervals on the circumference of the corresponding first-level driven disc and the second-level driven disc; the working profiles of the first-level cam and the second-level cam of the conjugate cam are staggered by an angle , the cam on the first layer is matched and engaged with the toggle roller on the first layer, the cam on the second layer is matched and engaged with the toggle roller on the second layer, and the conjugate cam is driven by the transmission mechanism. The conjugate cam rotates at a constant speed. When the cam lifts (working profiles) of the first layer cam and the second layer cam are respectively in contact with the corresponding first layer toggle rollers and the second layer toggle rollers in sequence, the working disc is driven to rotate for one working cycle. When the cam is at the low point, the toggle roller of the first layer and the toggle roller of the second layer only roll on the arc surface of the conjugate cam, and the working disc is stationary relative to the conjugate cam, thus realizing Intermittent movement of the working disc.

As a further illustration of the above-mentioned scheme, a hook-through pin mechanism is also provided on the workbench A, and the hook-through pin mechanism is arranged on one side of the longitudinal plane of the work plate. Specifically, the hook-through pin mechanism is controlled by a lever D is composed of a lever E and a hook pin angle adjustment device. The lever D is pipe-shaped, and the pipe-shaped head of the lever D is the working end, which is perpendicular to the longitudinal plane of the work plate. The end is set on the workbench A, and the working end is provided with a hook pin. The hook pin is horizontally opposite to the pin hole of the nail clipper held by the manipulator on the right side of the work plate, and the hook pin is horizontal to the right side of the work plate. The pinholes of the nail clippers held by the manipulator are horizontally opposite, a return spring C is provided between the tail end of the lever D and the worktable A, and a dial pin B with a bearing is provided at the tail end of the lever D; the lever E passes through it The fulcrum E is set on the workbench A, one end of the lever E is provided with a long groove, the main body of the pin B falls in the long groove, and the other end of the lever E is connected with the cam or hydraulic drive device or pneumatic drive device; the angle of the hook pin is adjusted The device is arranged on the lever E. When the nail clipper held by the manipulator is in the grinding position, the hook pin mechanism moves to work B with the workbench A, the hook pin penetrates into the pin hole in the corresponding nail clipper, and the working end of the lever D pushes the jaw of the nail clipper At the same time, the top of the cam lifts the lever E, and the lever E rotates around the fulcrum E, and the lever E presses down the tail end of the lever D, and the lever D rotates around the fulcrum D, so that the working end of the lever D drives the head of the hook pin to tilt upward , the hook pin hooks the two jaws of the nail clipper together, and presses down the jaw closest to the working end of the lever D to simulate the working state of the nail clipper, so that the jaw of this jaw is longer than the jaw of the other jaw. In the bite state when cutting nails, wait for the abrasive belt to grind the jaws on the same line and grind them into sharp edges.

The abrasive belt transmission mechanism consists of an abrasive belt and two abrasive belt wheels. The abrasive belt wheel near the workbench A is an abrasive belt working wheel. An abrasive belt tensioning device is arranged between the two abrasive belts. The belt tensioning device includes a tightening wheel, which is arranged at the head end of a lever B and contacts with the inner side of the abrasive belt. The tension wheel tensions the sand, and the lever B is set on the workbench B through the fulcrum B and the tension spring. A tension spring is arranged between the tail end of the lever B and the workbench B, and the tension spring pulls down the lower end of the lever B to rotate the lever B around the fulcrum B, so that the tightening wheel at the head end of the lever B is pressed upward Belt, tension the belt. The abrasive belt tensioning device has a simple and effective structure, and the take-up wheel is always in tight contact with the abrasive belt under the action of the tension spring and the lever B, so as to automatically adjust the tightness of the abrasive belt. The abrasive belt tensioning device keeps the abrasive belt in a tensioned state to prevent the abrasive belt from loosening and affecting the grinding quality.

As a further improvement of the abrasive belt transmission mechanism, the abrasive belt transmission mechanism is provided with a device for adjusting the upper and lower positions of the abrasive belt working wheel. Specifically, an adjustment turntable is arranged above the workbench B where the abrasive belt transmission mechanism is located. The work plate connection where the work wheel is located. The position adjustment of the working plate relative to the bottom plate B of the working table B is realized by rotating the turntable. Since the abrasive belt working wheel is arranged on the working plate, the position of the abrasive belt working wheel changes with the position of the working plate.

As a further illustration of the above scheme, a base plate A is provided at the bottom of the workbench A, and load-bearing bearings A and ball guide rails A are arranged longitudinally between the base plate A and the surface of the frame; a boss is provided above the outside of the frame , the boss is provided with a planar longitudinal pushing device, the end of which pushes against the left side of workbench A (the side away from workbench B). A return spring A is arranged between the frames. After the transmission mechanism drives the pushing device to push the workbench A to the right, the pushing device loses the function of the driving device, and the return spring A pulls the workbench A back to the original position to the left, forming a longitudinal reciprocating motion.

As a further description of the above-mentioned push device, the push device is a hydraulic drive device, a pneumatic drive device or a push mechanism with a push block inside, and a push column is provided on one side of the push block, and the main body of the push column sinks into a thrust lever In the guide groove at one end, the other end of the thrust lever cooperates with the cam A of the transmission mechanism, and the thrust lever is connected to the frame through the fulcrum A. As a further improvement of the pushing device, rollers are provided at the end of the pushing block to reduce the wear of the pushing block and the workbench A; a thrust adjustment plate is provided on the outside of the pushing device, and the thrust adjusting plate is connected to the tail of the pushing block through an adjustment rod. Turn the thrust adjustment dial to adjust the position of workbench A. The thrust lever pushes the push block under the action of the working profile of the cam to move the workbench A to the direction of the workbench B longitudinally. The lever moves on the working profile of the cam, and the workbench A stops moving longitudinally, and the abrasive belt is driven by the abrasive belt working wheel, and the abrasive belt polishes the jaws of the nail clippers, and at the same time, workbench B is doing horizontal (front and rear) The reciprocating movement makes the grinding of the jaw fully and uniformly. When the thrust lever falls on the cam arc, the thrust lever loses its thrust on the push block. Under the action of the return spring A, the worktable A moves longitudinally to the left and returns to its original position. At the same time, the worktable A rotates and switches to the down position. One station completes a vertical intermittent motion work cycle.

As a further illustration of the above-mentioned solution, a base plate B is provided at the bottom of the workbench B, a planar reciprocating motion drive mechanism is provided between the base plate B and the surface of the rack, and load-bearing bearings B and precision ball guide rails B are arranged laterally. The load-bearing bearing B and the precision ball guide B are fixed on the frame, the precision ball guide B is cylindrical, and the bottom plate B is sleeved on the precision ball guide B through balls; the planar reciprocating motion driving mechanism is a planar crank mechanism set on the frame , the upper end of the planar crank mechanism is connected to the track on the bottom surface of the bottom plate B to drive the workbench B to perform horizontal reciprocating motion in the plane, and the lower end of the planar crank mechanism is connected to the transmission mechanism; or, the planar reciprocating movement driving mechanism is a hydraulic drive device or a pneumatic drive device and The electrical control device cooperates with the driving device to drive the workbench B to make horizontal reciprocating motion in the plane. Preferably, the planar crank motion mechanism is composed of a crank wheel, a cylindrical rocker and a straight guide groove arranged on the bottom surface of the bottom plate B, the surface of the crank wheel is parallel to the bottom surface of the bottom plate B, and the rocker is arranged on the upper surface of the crank wheel The inner side of the circle, the upper part of the rocker is sleeved with a bearing, and the bearing part of the rocker sleeve is matchedly arranged in the straight guide groove, and the crank wheel is connected with the transmission mechanism through the rotating shaft arranged on it. When the crank wheel rotates, the rocker moves in the straight guide groove. Since the guide groove is straight, the bottom plate B is limited by the precision ball guide rail B set horizontally, so it can only move horizontally in a plane. The crank wheel rotates once and works Platform B just makes a periodic plane reciprocating motion.

Compared with manual grinding production, the beneficial effects that the present invention can achieve by adopting the above-mentioned technical solution are:

It can automatically perform precision grinding on the edge of the jaws of the nail clippers, which is conducive to the realization of automation and large-scale production; the production efficiency is high, the product consistency is good, and the quality is guaranteed; the product qualification rate is high, which effectively reduces the generation of waste products and is effective. It is beneficial to environmental protection and reduces the unit cost of products.

Description of drawings

The present invention and its beneficial technical effects are described in further detail below in conjunction with the accompanying drawings and specific embodiments, wherein:

Fig. 1 is a perspective view of a nail clipper;

Fig. 2 is a structural schematic diagram of an embodiment of the present invention;

Fig. 3 is the structural representation of the workbench A of the embodiment shown in Fig. 2;

4 is a schematic structural view of a manipulator according to an embodiment of the present invention;

Fig. 5 is a schematic structural view of a working disk in an embodiment of the present invention;

Fig. 6 is a schematic structural view of an intermittent motion mechanism according to an embodiment of the present invention;

Fig. 7 is a structural schematic diagram of another intermittent motion mechanism according to an embodiment of the present invention;

Fig. 8 is a schematic diagram when the hook pin of the hook pin mechanism penetrates into the pin hole of the nail clipper;

Fig. 9 is a schematic diagram of the main structure of the hook pin of the hook pin threading mechanism according to an embodiment of the present invention;

Fig. 10 is a schematic structural view of a workbench B according to an embodiment of the present invention;

Fig. 11 is a schematic diagram when the finger nail clipper to be ground in the manipulator is horizontally opposite to the working end of the abrasive belt wheel;

Fig. 12 is a schematic diagram of a load-bearing bearing B and a precision ball guide B in an embodiment of the present invention;

Fig. 13 is a schematic structural view of a planar crank mechanism according to an embodiment of the present invention.

Explanation of reference signs:

1. Workbench A 2. Workbench B 3. Rack 4. Transmission mechanism 5. Nail clippers 6. Hook pin mechanism 7. Motor B 8. Motor A 9. Gearbox 10. Manipulator 11. Working disc 12. Bottom plate A 13. Pushing mechanism 14. Return spring A 15. Fixed plate 16. Load-bearing bearing 17. Ball guide rail A 100. Fixed chuck 101. Movable chuck 102. Silica gel 103. Lever C 104. Rolling bearing 105. Pivot point C 106. Return spring B 110, positioning hole 130, push block 131, push column 132, adjustment plate 133, guide groove 134, thrust lever A 135, fulcrum A 136, roller B 137, roller A 20, abrasive belt wheel A 21, abrasive Belt 22, bottom plate B 23, crank wheel 24, rocker 25, abrasive belt tensioning device 26, abrasive belt wheel B 27, precision ball guide rail B 28, turntable 29, straight guide groove 250, tightening wheel 251, fulcrum B 252, tension spring 253, lever B 40, transmission shaft 41, bevel gear A 42, gear A 43, gear C 44, rotating shaft 45, dial plate 45', conjugate cam 46, training wheel A 460, chain 47, Slotted wheel 47', driven disc 48, cam A 49, bevel gear B 450, notched disc 451, pin A 461, training wheel B 470, pin groove 471, arc groove 450', first layer cam 451', Second layer cam 470', first layer toggle roller 471', second layer toggle roller 50, jaw 51, pin hole 53, cam B 60, hook pin 61, fulcrum D 62, lever D 63, return spring C 64 , pin B 65, long slot 66, fulcrum E 67, lever E 68, hook pin angle adjustment device.

Detailed ways

As shown in Figures 2 to 13, the preferred implementation of the automatic precision grinding machine with 5 jaws of nail clippers is shown in the figure. For the convenience of writing, the following descriptions of each component are based on the position shown in the figure. It can be seen from the figure :

Example 1

Referring to Fig. 2 and Fig. 3, the automatic precision grinding machine for the jaws of nail clippers includes a frame 3 and a transmission mechanism 4 arranged on the frame 3; The load-bearing bearing 16A and the ball guide rail A17 are arranged longitudinally (from left to right), and the ball guide rail A17 is inside the load-bearing bearing 16; the bottom plate A12 is provided at the bottom of the workbench A1, and the load-bearing bearing 16A and the ball guide rail A17 are arranged on the bottom plate A12 above, so that the workbench A1 is limited to longitudinal movement. In this embodiment, a boss is provided above the outer side of the frame 3 (the left side in the figure), and a planar longitudinal pushing device is arranged on the boss. One of the pushing devices is a pushing mechanism as shown in the figure. The pushing mechanism 13 is provided with a push block 130, and the end of the push block 130 is provided with a roller A137 to withstand the left side of the workbench A1. Column 131, the main body of pushing column 131 sinks in the guide groove 133 of one end of a thrust lever A134, the other end of the thrust lever cooperates with the cam A48 of the transmission mechanism 4 through the roller B136, and the thrust lever is connected on the frame 3 by the fulcrum A135; The outside of the pushing device 13 is provided with a thrust adjustment disc 132, and the thrust adjustment disc 132 is connected to the tail of the push block 130 through an adjustment rod. Alternatively, a hydraulic method, a pneumatic method, and an electric control device can be used as the driving device for the planar and longitudinal movement of the workbench A1. A return spring A14 is provided between the right side of the bottom plate A12 and the left side of the frame 3 to provide force for the workbench A1 to return to the left. The purpose of this is to make the workbench A1 move intermittently back and forth longitudinally (left and right) on the frame 3 .

Two fixed plates 15 perpendicular to the bottom plate A12 and parallel to each other are arranged on the workbench A1 one behind the other. A shaft is arranged on the fixed plates 15, and the working disc 11 is arranged between the fixed plates 15 through the shaft, and the The mechanism drives it to rotate intermittently. Referring to Fig. 6, the intermittent motion mechanism includes a coaxial notched disc 450 and a dial 45, and a sheave 47 coaxial with the working disc 11, and the sheave 47 is provided with 12 arc-shaped grooves 471 and The pin groove 470, the arc groove 471 and the pin groove 470 are spaced apart from each other on the circumference of the corresponding sheave 47, and the depth of the pin groove 470 is darker than the depth of the arc groove 471, wherein the arc groove 471 and the notch disc 450 Matching and meshing, the pin groove 470 is engaged with the dial pin A451 of the dial plate 45, driven by the transmission mechanism, the sheave 47 performs intermittent movement under the action of the notched disc 450 and the dial plate 45; see FIG. 5, the work plate 11 is provided with There are 12 positioning holes 110 and 12 manipulators 10 evenly distributed in the circumference of the working disk 11, see Fig. 4, each manipulator 10 includes a fixed chuck 100 and a movable chuck with silica gel 102 inside, the fixed chuck 100 is arranged opposite to the movable chuck to form an opening matching with the nail clipper 5, and a return spring B106 is arranged between the fixed chuck 100 and the movable chuck; the fixed chuck 100 is fixedly arranged on the working disk 11; The lower end of the movable chuck is hinged to the working disk 11, the upper end of the movable chuck is hinged to one end of an L-shaped lever C103, the lower end of the movable chuck is hinged to the working disk 11, and the lever C103 passes through the fulcrum arranged at the bending point of the lever C103 C105 is set on the working disk 11, and the other end of the lever C103 has a rolling bearing 104. When the manipulator 10 turns to the right side of the working disk, the bearing contacts the cam B53, and the lever C103 is pushed to clamp the workpiece; the cam B53 is an arc for the working profile. Shaped structure, arranged on the workbench A1, contacts with the rolling bearing 104 of the manipulator 10 on the right side of the work plate 11, and its position is fixed. The purpose of this is to clamp the workpiece by the manipulator 10, realize the intermittent rotation of the work disk 11 by the sheave 47, and realize the blanking after the station switching and workpiece grinding.

Referring to FIG. 8 and FIG. 9 , a hook pin mechanism 6 is also provided on the workbench A1 , and the position of the hook pin mechanism 6 corresponds to the position of the working disk 11 . Specifically, the hook pin mechanism 6 is composed of a lever D62, a lever E67 and a hook angle adjustment device 68. The lever D62 is pipe-shaped, and the pipe-shaped head of the lever D62 is a working end, which is perpendicular to the working end. In the longitudinal plane of the disk 11, the fulcrum D61 of the lever D62 is set on the workbench A1 close to the working end of the lever D62. The working end is provided with a hook pin 60, and the hook pin 60 and the right side of the working disk 11 are in a horizontal position and clamped by the manipulator 10. The pin holes 51 of the nail clippers 5 are aligned horizontally. A return spring C63 is provided between the tail end of the lever D62 and the workbench A1. The tail end of the lever D62 is provided with a dial pin B64 with bearings; the lever E67 passes through the fulcrum on it. E66 is arranged on the workbench A1, and one end of the lever E67 is provided with a long groove 65, and the main body of the dial pin B64 falls in the long groove 65; the hook pin angle adjustment device 68 is arranged on the lever E67; The other end of E67 is connected with the cam, or hydraulic pressure, pneumatic mode and electric control device can be adopted to act on the other end of the lever E67 as the driving device of the lever E67. The purpose of this is to simulate the operating state of the nail clippers 5 through the hook pin mechanism 6, so that the edges of the nail clippers jaws 50 that are ground out are on the same line.

the

Referring to Fig. 10 and Fig. 12, on the right part of the upper surface plane of the frame 3, there are several load-bearing bearings 16B and some precision ball guide rails B27 arranged transversely (from front to back). The planes on the upper surface of the frame 3 form a mutually perpendicular state, and the precision ball guide rail B27 is inside the load-bearing bearing 16B; the bottom plate B22 is provided at the bottom of the workbench B2, and the base plate B22 is arranged on the load-bearing bearing 16A and the ball guide rail A17. The workbench B2 is limited to lateral movement, but the longitudinal position will not shift, and the workbench B2 is opposite to the workbench A1. The workbench B2 is also provided with a drive device for driving the workbench B2 to perform lateral reciprocating motion. One of the drive devices is shown in Fig. 10 and Fig. 13. There is also a planar crank mechanism between the precision ball guide rails to drive the workbench B2 to perform plane transverse movement ( Front and back direction) reciprocating motion, this planar crank motion mechanism is made up of crank wheel 23, cylindrical rocker 24 and the straight guide groove 29 that is arranged on the bottom surface of base plate B22, the surface of crank wheel 23 is parallel to the bottom surface of base plate B22, and rocker 24 Set on the inner side of the circumference of the upper surface of the crank wheel 23, the upper part of the rocker 24 is covered with a bearing, and the rocker 24 is covered with a bearing part that is matched in the straight guide groove 29, and the crank wheel 23 is arranged on it. The transmission mechanism 4 is connected. Alternatively, a hydraulic method, a pneumatic method and an electric control device can be used as a driving device for the planar lateral reciprocating movement of the workbench B2. The purpose of this is to make the workbench B2 capable of reciprocating horizontally on the frame 3 .

Referring to Fig. 10, the abrasive belt 21 and the grinding device of the abrasive belt conveying mechanism are arranged on the workbench B2. Specifically, the left side of the workbench B2 is provided with a work plate perpendicular to the bottom plate B22, and the outside of the work plate is provided with an abrasive belt. The belt pulley A20, correspondingly, the right side of the workbench B2 is also provided with a belt pulley B26, the belt pulley A20 and the belt pulley B26 are connected by a belt 21 made into a belt shape, and the front end of the belt pulley A20 is It is the working end, and the working end is at the same horizontal position as the nail clippers 5 clamped by the manipulator 10 on the closest working disk 11; the abrasive belt wheel B26 is connected with the motor B7 through the V-belt wheel coaxial with it, and is driven by the motor B7 . An abrasive belt tensioning device 25 is provided between the abrasive wheel A20 and the abrasive wheel B26. The abrasive belt tensioning device 25 includes a tightening wheel 250, which is arranged on the head end side of a lever B253 and contacts with the inner side of the upper abrasive belt 21, and the lever B253 is arranged on the workbench B2 through the fulcrum B251, A tension spring 252 is arranged between the tail end of the lever B253 and the workbench B2, and the tension spring 252 pulls down the tail end of the lever B253 to rotate the lever B253 around the fulcrum B251 so that the tightening wheel 250 at the upper end of the lever B253 Compress the abrasive belt 21 upwards to tighten the abrasive belt 21. The abrasive belt conveying mechanism is provided with a device for adjusting the upper and lower positions of the abrasive belt 21 working wheels, specifically, an adjusting turntable 28 is arranged above the workbench B2 where the abrasive belt conveying mechanism is located, and the rotating disk 28 is connected to the working wheel where the abrasive belt 21 working wheels are located through a linkage mechanism. board connection. Realize the adjustment of the position of the working plate relative to the base plate B22 of the workbench B2 by rotating the rotating disk 28. Since the abrasive belt 21 working wheel is arranged on the working plate, the position of the abrasive belt 21 working wheel changes with the position of the working plate. The purpose of this is to make the abrasive belt 21 can be automatically fed, and the nail clipper jaws 50 are polished in the vertical direction, and can be horizontally moved back and forth on the frame 3 with the workbench B2 to carry out the horizontal grinding.

Referring to Fig. 1, Fig. 3, Fig. 10, the main part of transmission mechanism 4 is arranged on the middle layer of frame 3, and described transmission mechanism 4 comprises motor A8, after the drive shaft of motor A8 is connected with gearbox 9, drives transmission shaft 40. The left end of the transmission shaft 40 is connected through a bevel gear and its matching gear. This gear is coaxial with the gear A42 in the pair of gears. The gear B of the pair of gears is arranged on the upper layer of the frame 3. The aforementioned cam A48 is coaxial with the gear B. , coaxial with gear B also has training wheel A46, and training wheel A46 is connected with the coaxial training wheel B461 of aforementioned dial plate 45 by chain 460; The right end of drive shaft 40 is also provided with bevel gear B49, and this bevel gear B49 and The bevel gear C43 at the lower end of the rotary shaft 44 connected to the aforementioned crank wheel 23 is engaged.

As a supplementary explanation, the longitudinal intermittent movement of the workbench A1 is mainly to facilitate the rotation of the work plate 11 for station switching.

In addition, when the hydraulic method, pneumatic method and electrical control device are used as the control device, the nail clipper jaw automatic precision grinding machine is also equipped with electrical equipment such as a limit switch.

Example 2

The difference between this embodiment and embodiment 1 lies in the intermittent motion mechanism that drives the work disc to rotate intermittently, and other parts are the same as embodiment 1.

Referring to Fig. 7, as another case of the intermittent motion mechanism, the intermittent motion mechanism includes a double-layer conjugate cam 45' and a double-layer driven disk 47' coaxial with the working disk 11, and each layer of driven disk 47' There are several toggle rollers on the top, and the first layer toggle roller 470' and the second layer toggle roller 471' are spaced apart from each other on the circumference of the corresponding first layer driven plate and the second layer driven plate; the conjugate cam 45 The working profiles of the first cam 450' and the secondary cam 451' are staggered by an angle, and the working profiles of the first cam 450' and the secondary cam 451' are preferably 1/4 of the circumference, so that the working disc 11 The angle of each rotation is 30°, the cam 450' of the first layer is matched and engaged with the toggle roller 470' of the first layer, the cam 451' of the second layer is matched and engaged with the toggle roller 471' of the second layer, and the conjugate cam 45' is driven by the transmission mechanism The drive, in particular, the cam 45' is coaxial with the training wheel B461.

The above is only the preferred embodiment of the present invention, it should be pointed out that for those skilled in the art, without departing from the inventive concept of the present invention, some modifications and improvements can also be made, and these all belong to the present invention. protection scope of the invention.

Claims (10)

1. automatic accurate socket grinder of nail nipper jaw; It comprises frame; And be arranged on the transmission mechanism on the frame; It is characterized in that: Yi Bian on the frame surface plane, be provided with the intermittently workbench A of move left and right of relative frame, another side is provided with the workbench B that relative frame moves forward and backward, and workbench A and workbench B are oppositely arranged; Any workbench among workbench A and the workbench B is provided with the manipulator of clamping nail nipper, and another workbench is provided with grinding attachment.

2. the automatic accurate socket grinder of nail nipper jaw according to claim 1; It is characterized in that: said manipulator is more than one; Be evenly distributed in the circumference of a scratch diskette; This scratch diskette is arranged between the fixed head parallel to each other, and this fixed head is perpendicular to the base plate A of workbench A, and scratch diskette drives it by the intermittent motion mechanism in the transmission mechanism and intermittently rotates; Said grinding attachment comprises abrasive band and abrasive band connecting gear, and this abrasive band connecting gear is arranged on the workbench B.

3. the automatic accurate socket grinder of nail nipper jaw according to claim 2; It is characterized in that: said manipulator comprises a fixed chuck and active chuck; Fixed chuck and active chuck are oppositely arranged and form an opening that matees with nail nipper, are provided with return spring B between fixed chuck and the active chuck; Said fixed chuck is arranged on the scratch diskette; Said active chuck lower end is through the hinged scratch diskette that is arranged on; The active chuck upper end is hinged on the end of a lever C; The active chuck lower end is hinged on the scratch diskette; The active chuck lower end is hinged on the scratch diskette, and lever C is arranged on the scratch diskette through fulcrum C, and the other end of lever C and cam B or fluid pressure drive device, pneumatic actuating device are connected.

4. the automatic accurate socket grinder of nail nipper jaw according to claim 3; It is characterized in that: said active chuck inboard is provided with elastic adhesive tape; Said lever C is L shaped structure, and said fulcrum C is arranged on the bending place of lever C, and lever C and cam B link are provided with rolling bearing.

5. the automatic accurate socket grinder of nail nipper jaw according to claim 2; It is characterized in that: said intermittent motion mechanism comprises double-deck conjugate cam and the double-deck clutch plate coaxial with scratch diskette; Every layer of clutch plate is provided with several and stirs roller, and the first floor is stirred roller and sublevel and stirred roller and be intervally installed on the circumference of each self-corresponding first floor clutch plate and sublevel clutch plate; The first floor cam of conjugate cam and the work profile of the sublevel cam angle that staggers mutually, the first floor cam and the first floor are stirred the engagement of roller coupling, the sublevel cam is stirred the roller coupling with sublevel and meshed.

6. the automatic accurate socket grinder of nail nipper jaw according to claim 2; It is characterized in that: also be provided with on the said workbench A and wear hook pin mechanism, this wears a side of the fore-and-aft plane that hook pin mechanism is arranged on scratch diskette, and the said hook pin mechanism of wearing is made up of lever D and lever E and hook pin angular adjustment apparatus; Said lever D is a tobacco pipe shape; The tobacco pipe shape head of lever D is the working end, and this working end is perpendicular to the scratch diskette fore-and-aft plane, and the fulcrum D of lever D is arranged on the workbench A near lever D work end; The work end is provided with hook pin; The pin-and-hole level of the nail nipper of the manipulator clamping that hook pin and scratch diskette right side are horizontal is relative, is provided with return spring C between the tail end of lever D and the workbench A, and the tail end of lever D is provided with the finger B that tape spool holds; Lever E is arranged on the workbench A through the fulcrum E on it, and lever E one end is provided with elongated slot, and the main body of finger B drops in this elongated slot, and the lever E other end and cam or fluid pressure drive device, pneumatic actuating device are connected; The hook pin angular adjustment apparatus is arranged on the lever E.

7. the automatic accurate socket grinder of nail nipper jaw according to claim 2; It is characterized in that: said abrasive band connecting gear constitutes belt gear by abrasive band and two abrasive belt wheels; Abrasive belt wheel near workbench A is the abrasive band active wheel; Be provided with the abrasive band tensioning apparatus between two abrasive bands, this abrasive band tensioning apparatus comprises that is tightened up a wheel, this tighten up the wheel be arranged on a lever B head end and with the abrasive band in side contacts; The tail end of this lever B is provided with back-moving spring, and lever B is provided with on the workbench B through fulcrum B and back-moving spring.

8. the automatic accurate socket grinder of nail nipper jaw according to claim 1 and 2 is characterized in that: said workbench A bottom is provided with base plate A, is provided with the load-bearing bearing A and the spherical guide A that all vertically are provided with between base plate A and the frame surface; Frame outside top is provided with a boss, and boss is provided with the vertical thrust unit in plane, this thrust unit end withstand workbench A away from workbench B one side, this thrust unit is connected with transmission mechanism, is provided with return spring A between base plate A and the frame.

9. the automatic accurate socket grinder of nail nipper jaw according to claim 8; It is characterized in that: said thrust unit is the pushing mechanism that is provided with pushing block in fluid pressure drive device, pneumatic actuating device perhaps are; Said pushing block one side is provided with and pushes away post; The main body that pushes away post is absorbed in the guide groove of a thrust lever one end, and the other end of thrust lever cooperates with the cam A of transmission mechanism, and thrust lever is connected on the frame through fulcrum A.

10. the automatic accurate socket grinder of nail nipper jaw according to claim 1 and 2; It is characterized in that: said workbench B bottom is provided with base plate B; Be provided with the load-bearing bearing B and the accurate spherical guide B of planar reciprocating driving mechanism and equal horizontally set between base plate B and the frame surface; Load-bearing bearing B and accurate spherical guide B are fixed on the frame, and accurate spherical guide B is cylindrical, and base plate B is enclosed within on the accurate spherical guide B through ball; The planar reciprocating driving mechanism is the plane crank-motion mechanism that is arranged on the frame; Plane crank-motion mechanism upper end is connected with the bottom surface track of base plate B; Drive workbench B and do the flat transverse reciprocating motion, plane crank-motion mechanism lower end links to each other with transmission mechanism; Perhaps, the planar reciprocating driving mechanism is that fluid pressure drive device or pneumatic actuating device cooperate the drive unit that constitutes with electrical control gear, drives workbench B and does the flat transverse reciprocating motion.

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