CN112621343A

CN112621343A - Feeding device

Info

Publication number: CN112621343A
Application number: CN202011535871.5A
Authority: CN
Inventors: 郑安军; 石鑫; 高兆春; 姬志恒; 孟亚龙
Original assignee: Headman Shanghai Automation Technology Co ltd
Current assignee: Headman Shanghai Automation Technology Co ltd
Priority date: 2020-12-23
Filing date: 2020-12-23
Publication date: 2021-04-09

Abstract

The invention provides a feeding device, and belongs to the technical field of machine tools. The feeding device solves the problems that the feeding is unstable and the like due to the fact that a workpiece is clamped by the existing feeding device. This material feeding unit, but including layer board and the pay-off group of back-and-forth movement, the pay-off group is including two setting elements that are located the layer board top, and two setting elements can draw close in opposite directions and carry on the back away from each other in the left and right direction, and two liang of relative one sides of setting element are provided with the location notch, are provided with the guide way that extends along the fore-and-aft direction on the upper surface of layer board, and two setting elements draw close in opposite directions back and form the locating hole in the guide way directly over in. The feeding device can ensure the feeding stability under the condition of not clamping workpieces.

Description

Feeding device

Technical Field

The invention belongs to the technical field of machine tools, and relates to a feeding device.

Background

With the development of automatic processing, automatic feeding realized by providing a feeding device on a machine tool is widely used. After the feeding device conveys the workpiece to a loading position, the manipulator conveys the workpiece to a machine tool for processing.

The chinese patent document discloses an automatic handle pressing feeder, the application number: CN 201110204107.4; publication No.: CN 102284647a ], wherein the disclosed feeding device comprises: the chassis is fixedly arranged on the bottom plate of the material dispenser; a bracket set longitudinally mounted on the chassis; the feeding supporting plate is horizontally arranged on the bracket group; the feeding guide rod group comprises two feeding guide rods which are arranged on the feeding supporting plate; the feeding clamping jaw set comprises a plurality of feeding clamping jaws, the number of the feeding clamping jaws is not less than two, and each feeding clamping jaw is two parts which are bilaterally symmetrical and is arranged on the feeding guide rod set; the feeding clamping jaw sliding rail set is positioned below the feeding supporting plate and comprises two feeding clamping jaw sliding rails, and feeding sliding blocks are arranged on the feeding clamping jaw sliding rails; the feeding cylinder is positioned below the feeding supporting plate and connected with the feeding sliding block; and the feeding clamping jaw air cylinder is positioned below the feeding supporting plate and is connected with the feeding guide rod group. And the working principle of the feeding device is disclosed: the feeding cylinder controls the feeding sliding block to drive the feeding guide rod to move backwards, the feeding clamping jaw cylinder controls the feeding clamping jaw to clamp a new workpiece, then the feeding cylinder controls the feeding sliding block to drive the feeding guide rod to move forwards, the feeding clamping jaw cylinder controls the feeding clamping jaw to loosen, and the foremost workpiece is sent to the die to be subjected to handle pressing treatment.

In the feeding process, the feeding clamping jaws need to clamp the workpiece for feeding, and clamping workpiece feeding is also a generally regarded mode capable of stably feeding. However, in the feeding device, the workpiece is placed on the feeding supporting plate before being clamped by the feeding clamping jaws, the lower surface of the workpiece abuts against the upper surface of the feeding supporting plate, and after the workpiece is clamped by the feeding clamping jaws, friction is formed between the workpiece and the feeding supporting plate in the feeding process due to machining errors and position errors, so that the whole feeding clamping jaw group vibrates, and feeding of the feeding device is unstable. In order to improve feeding stability, a common method is to reduce the surface roughness of a feeding supporting plate, but a workpiece is a product to be processed and has low precision, the workpiece can cause damage to the feeding supporting plate in the surface sliding process of the feeding supporting plate, and the surface roughness of the feeding supporting plate can be increased after a long time; or the workpiece is lifted after being clamped, so that the workpiece is entirely separated from the feeding supporting plate, but an up-down lifting mechanism needs to be added, the structure of the feeding device is complicated, and the equipment cost is greatly increased.

Disclosure of Invention

The invention aims to provide a feeding device aiming at the problems in the prior art, and solves the technical problem that feeding is unstable due to workpiece clamping of the conventional feeding device.

The purpose of the invention can be realized by the following technical scheme:

the utility model provides a feeding device, but including layer board and the pay-off group of back-and-forth movement, pay-off group is including two setting elements that are located the layer board top, and two setting elements can draw close in opposite directions and keep away from mutually in the left and right direction, two liang of relative one sides of setting element are provided with the location notch, its characterized in that, be provided with the guide way that extends along the fore-and-aft direction on the upper surface of layer board, two setting elements draw close the back in opposite directions and form the locating hole in location notch department directly over the guide way.

Taking the feeding of a shaft workpiece as an example, during feeding, the workpiece is in a vertical state, the lower end of the workpiece is positioned in a guide groove, the upper end of the workpiece extends out of the guide groove, the positioning pieces are in a state of being away from each other, after the feeding group moves backwards, the workpiece enters between the two positioning pieces, the positioning notches are opposite to the workpiece, then the two positioning pieces move towards each other, positioning holes are formed at the positioning notches right above the guide groove after the two positioning pieces move towards each other, the part of the workpiece extending out of the guide groove enters the positioning holes, the front side hole wall surface and the rear side hole wall surface of the positioning holes have a front-back positioning effect on the workpiece, then the positioning pieces move forwards, the rear side hole wall surface of the positioning holes pushes the workpiece to slide along the guide groove in the guide groove, the feeding group stops moving forwards after the workpiece slides to a set distance, and the front side hole wall surface, then the two positioning parts are oppositely far away, so that the workpiece is separated from the positioning parts, and then the positioning parts move backwards, so that the workpiece is fed forwards once.

When the workpiece slides in the guide groove, the left side wall and the right side wall of the guide groove have a left-right positioning effect on the workpiece, and the workpiece is prevented from moving in the left-right direction, so that the left side hole wall surface and the right side hole wall surface of the positioning hole can be positioned on the workpiece without being attached to the workpiece, the workpiece can be positioned left and right, two positioning parts can be moved close to each other in opposite directions, the workpiece does not need to be fixed through clamping the workpiece, and only the front side hole wall surface and the rear side hole wall surface of the positioning hole have a front-back positioning effect. Because the setting element need not press from both sides tight work piece, consequently the in-process that the work piece slided in the guide way, if because dimensional error and position error have made the friction and lead to the work piece to take place the vibration between work piece and the layer board, the vibration that the work piece took place also can not conduct and lead to whole pay-off group to take place the vibration on the setting element to the stability of material feeding unit has been guaranteed. Therefore, the feeding device can feed materials in a mode of not clamping workpieces, the workpieces are positioned left and right only through the guide groove, the workpieces are positioned front and back through the positioning holes formed by the positioning pieces which are closed in opposite directions, the workpieces can be kept stable in the forward moving process, and the feeding device can ensure the feeding stability under the condition of not clamping the workpieces. The feeding device breaks through the conventional cognition of stably feeding by clamping the workpiece, and realizes stable feeding under the condition of not clamping the workpiece by reverse design.

In the above feeding device, the supporting plate includes a base plate, two guide strips are fixedly connected to the upper surface of the base plate, the two guide strips are arranged side by side in the left-right direction, and the guide groove is formed between the two guide strips on the upper surface of the base plate.

The bottom surface of the guide groove is provided by the upper surface of the base plate, the two side surfaces of the guide groove are provided by the side surfaces of the guide strips, the base plate and the guide strips are fixed in a split mode and can be processed independently, machining precision is guaranteed, machining excess materials which are easy to generate when the side surfaces and the bottom surface of the guide groove are integrally formed can be avoided, smooth and stable sliding of a workpiece in the guide groove is guaranteed, and feeding stability of the feeding device is guaranteed.

In the feeding device, the guide strip and the substrate are fixed through the connecting bolt, the upper surface of the guide strip is provided with the adjusting hole extending along the left-right direction, and the connecting bolt penetrates through the adjusting hole and then is in threaded connection with the substrate.

The left and right positions of the guide strip can be adjusted through the adjusting holes, so that the guide strip is adjusted to a proper position to play a role in guiding and positioning a workpiece, and the feeding device is stable in feeding.

In the feeding device, the rear end opening of the guide groove forms a feeding opening, and two side surfaces of the feeding opening are provided with guide surfaces which are obliquely arranged. The workpiece is conveniently pushed into the guide groove from the feeding opening by the arrangement, so that the feeding device can feed materials smoothly.

In the feeding device, a sliding plate capable of moving back and forth is arranged below the supporting plate, a guide rail extending in the left-right direction is fixed on the upper surface of the sliding plate, two sliding blocks are slidably mounted on the guide rail, and the two sliding blocks are fixedly connected with the two positioning parts respectively.

The positioning piece is positioned and guided by the guide rail, so that the positioning piece moves stably in the left and right directions, and the feeding stability of the feeding device is ensured.

In foretell material feeding unit, the setting element is platelike, all is connected with the mounting panel that is L shape between every setting element and the slider that corresponds, the mounting panel includes horizontal portion and vertical portion, horizontal portion fixed connection is on the upper surface of slider, vertical portion makes progress vertical setting in horizontal portion, set up the movable groove that corresponds with the mounting panel on the layer board, vertical portion passes behind the movable groove and is fixed with the setting element.

The structure that makes form channel-section steel or I-steel between setting element and the mounting panel like this sets up, makes the overall structure of setting element and mounting panel formation stable, and the distance of vertical portion to location notch department can be shortened in the setting of activity groove, makes the structure that setting element and mounting panel formed more stable to improve the stability of material feeding unit pay-off.

In the feeding device, an opening and closing cylinder is further fixed on the sliding plate, a hinged plate is fixed on a piston rod of the opening and closing cylinder, connecting rods are hinged between the hinged plate and the two mounting plates respectively, and the two connecting rods are located on two sides of the piston rod of the opening and closing cylinder respectively.

When a piston rod of the opening and closing cylinder extends out, the two mounting plates are pushed to be away from each other through the connecting rod, so that the positioning pieces are away from each other; when the piston rod of the opening and closing cylinder retracts, the two mounting plates are pulled to move close towards each other through the connecting rod, so that the positioning pieces move close towards each other. The action of one opening and closing cylinder realizes the synchronous action of two positioning pieces, so that the feeding device works stably.

In the above feeding device, a stop pin facing the other transverse portion is fixed to one of the transverse portions, and a stop screw opposite to the stop pin is threadedly connected to the other transverse portion. The stop pin and the stop screw have limiting functions, so that collision accidents of the two positioning parts are avoided, and the situation that the two positioning parts are too close to each other to clamp a workpiece by the positioning part can be avoided. And the stop screw rod is in threaded connection with the transverse part, and the limit distance of the positioning piece can be adjusted by rotating the stop screw rod, so that the debugging is facilitated.

In foretell material feeding unit, the below of slide is fixed with the bottom plate, it is fixed through the support column between bottom plate and the layer board, be fixed with the slide rail that extends along the fore-and-aft direction on the bottom plate, slidable mounting has the sliding block on the slide rail, the slide is fixed on the sliding block, still be fixed with feeding cylinder on the bottom plate, feeding cylinder's piston rod is connected with the slide and can drive the slide and slide from beginning to end. The sliding plate slides stably by the arrangement, so that the feeding device works stably.

In the feeding device, a material waiting part is fixed behind the supporting plate, a material waiting groove for placing a workpiece is formed in the material waiting part, a material outlet opposite to the material inlet is further formed in the material waiting part, the material outlet is communicated with the material waiting groove, a material pushing cylinder is fixed behind the material waiting part, and a piston rod of the material pushing cylinder extends out to push the workpiece in the material waiting groove out of the material outlet.

The workpieces are arranged in the material waiting groove, the pushing cylinder is used for pushing the workpieces in the material waiting groove into the guide groove, and the automation of the feeding device is improved.

In the feeding device, the material waiting groove is perpendicular to the guide groove. Thus, the steering of workpiece feeding can be realized.

In the feeding device, each positioning piece is provided with a plurality of positioning notches, the positioning notches on each positioning piece are uniformly arranged along the front-back direction, and the positioning notches on the two positioning pieces are arranged in a one-to-one correspondence manner. When feeding, the positioning piece can move back and forth once to send the workpiece out of the distance between two adjacent positioning notches, and intermittent continuous feeding can be realized after repeated reciprocating back and forth movement.

Compared with the prior art, the invention has the following advantages:

the planker is provided with a guide groove, a positioning hole is formed right above the guide groove and at the positioning notch after the positioning pieces are closed in opposite directions, the positioning pieces are mutually far away to enable the positioning hole to be disassembled, and stable feeding without clamping workpieces is achieved. The guide groove is enclosed by the upper surface of the substrate and the side surface of the guide strip, so that the processing precision of the guide groove is ensured, the position of the guide strip is adjustable, the position precision of the guide groove is ensured, and the stable feeding is facilitated. The feed inlet of guide way sets up the spigot surface, makes the work piece can enter into the guide way smoothly, makes the pay-off process go on smoothly. The positioning piece is plate-shaped, the mounting plate is L-shaped, and the planker is provided with a movable groove, so that the positioning piece fixing structure is stable, and the feeding stability of the feeding device is improved. The connecting rod is arranged to realize the synchronous driving of the positioning piece by the opening and closing cylinder, so that the smooth feeding process is ensured.

Drawings

FIG. 1 is a perspective view of the present feed device;

FIG. 2 is a right side view of the present feed assembly;

FIG. 3 is a view taken in the direction A of FIG. 2;

FIG. 4 is a perspective view of a stationary group in the present feed apparatus;

FIG. 5 is a perspective view of the feed group of the present feed apparatus;

FIG. 6 is a perspective view of the mounting plate and the connecting rod of the feeding device;

FIG. 7 is a schematic view showing a feeding process of the feeding apparatus.

In the figure, 1, fixed group; 2. a base plate; 3. a support plate; 3a, a substrate; 3a1, active slot; 3b, a guide strip; 3b1, guide surface; 3b2, adjusting holes; 3c, a guide groove; 3d, a feeding port; 3e, connecting bolts; 4. a support pillar; 5. a slide rail; 6. a feeding cylinder; 7. a limit stop block; 8. a feeding group; 9. a positioning member; 9a, a positioning notch; 10. positioning holes; 11. a slide plate; 12. a slider; 13. a limit bolt; 14. a guide rail; 15. a slider; 16. mounting a plate; 16a, a transverse portion; 16b, a vertical portion; 17. a retaining pin; 18. a stop screw; 19. locking the nut; 20. an opening and closing cylinder; 21. a hinge plate; 22. a connecting rod; 23. a steering group; 24. waiting for a material part; 24a, a material waiting groove; 24b, a discharge hole; 25. a material pushing cylinder; 26. and (5) a workpiece.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

Example one

As shown in fig. 1-7, a feeding device comprises a fixed group 1 and a feeding group 8 which can move back and forth. Fixed group 1 is fixed with support column 4 respectively including fixed bottom plate 2 and layer board 3 on four angles of layer board 3, and four support column 4 wait high setting, and the lower extreme of support column 4 is fixed on bottom plate 2, forms installation space between bottom plate 2 and the layer board 3. Slide rails 5 extending in the front-rear direction are fixed to the upper surface of the base plate 2 at the mounting space, and the slide rails 5 are arranged side by side in the left-right direction. The supporting plate 3 comprises a base plate 3a which is horizontally fixed, and the base plate 3a is fixed on the upper end surfaces of the four supporting columns 4. Guide strips 3b extending in the front-rear direction are fixedly connected to the upper surface of the base plate 3a, two guide strips 3b are arranged side by side in the left-right direction, and a guide groove 3c is formed between the two guide strips 3b on the upper surface of the base plate 3 a. The guide groove 3c extends in the front-rear direction, and the guide groove 3c allows the workpiece 26 to be inserted therein and can be slidably fitted to the workpiece 26. The rear end opening of guide way 3c forms pan feeding mouth 3d, all has the inclined setting spigot surface 3b1 on the both sides face of pan feeding mouth 3d, and two pairwise opposite sides in the back of gib block 3b set up spigot surface 3b1 promptly. The guide strip 3b and the base plate 3a are fixed through a connecting bolt 3e, an adjusting hole 3b2 extending along the left-right direction is formed in the upper surface of the guide strip 3b, and the connecting bolt 3e penetrates through the adjusting hole 3b2 and then is in threaded connection with the base plate 3 a. Each guide strip 3b is provided with a plurality of adjusting holes 3b2, and the adjusting holes 3b2 on the same guide strip 3b are arranged at equal intervals along the front-back direction. In the figure, each guide strip 3b is provided with three adjusting holes 3b2, and the number of the adjusting holes can be increased or decreased according to the requirement, such as two or four adjusting holes 3b 2. The guide strips 3b may be integrally formed on the base plate 3a, or the guide grooves 3c may be formed directly in the base plate 3 a.

The feeding set 8 comprises two positioning parts 9 which are positioned above the supporting plate 3 and can be closed in opposite directions and away from each other in the left-right direction, positioning notches 9a are arranged on one opposite sides of the positioning parts 9 in pairs, and the positioning notches 9a are semicircular in shape in the figure and can also be semi-elliptical or rectangular. Each positioning piece 9 is provided with a plurality of positioning notches 9a, the positioning notches 9a on each positioning piece 9 are uniformly arranged along the front-back direction, and the positioning notches 9a on the two positioning pieces 9 are arranged in a one-to-one correspondence manner. When the two positioning parts 9 are closed towards each other, the two opposite positioning notches 9a form a positioning hole 10, and the positioning hole 10 is matched with the structure of the workpiece 26. When the workpiece 26 is a round bar, the positioning hole 10 may be round, the positioning notch 9a is semicircular, and the positioning hole 10 and the workpiece 26 have a clearance fit size; the positioning hole 10 can be in an oval shape, the positioning notch 9a is in a semi-oval shape, the long axis of the positioning hole 10 is in the left-right direction, the short axis of the positioning hole 10 is in the front-back direction, and the size of the short axis of the positioning hole 10 is matched with the diameter of the workpiece 26; the positioning hole 10 may also be rectangular, the positioning notch 9a may be rectangular, the length of the positioning hole 10 in the left-right direction is greater than the width of the positioning hole 10 in the front-rear direction, and the width of the positioning hole 10 in the front-rear direction matches the diameter of the workpiece 26. A sliding plate 11 is arranged above the sliding rails 5 in the installation space, each sliding rail 5 is provided with a sliding block 12 capable of sliding along the sliding rail 5, and the sliding plate 11 is fixed on the upper surface of the sliding block 12. The front end of the bottom plate 2 is positioned in front of the sliding plate 11 and is also fixed with a feeding cylinder 6, and a piston rod of the feeding cylinder 6 is connected with the sliding plate 11 and can drive the sliding plate 11 to slide back and forth. The connecting head is fixed on a piston rod of the feeding cylinder 6, the front baffle ring and the rear baffle ring are arranged on the outer side face of the connecting head, the connecting block is fixed on the upper surface of the front end of the sliding plate 11, the connecting groove for embedding the connecting head is formed in the upper surface of the connecting block, and the connecting head is embedded into the connecting groove and abuts against the front end face and the rear end face of the connecting block respectively with the front baffle ring and the rear baffle ring. The arrangement of the connector and the connecting block ensures that the feeding cylinder 6 and the sliding plate 11 are conveniently and stably connected.

A guide rail 14 extending in the left-right direction is fixed on the upper surface of the sliding plate 11, two sliding blocks 15 are slidably mounted on the guide rail 14, and the two sliding blocks 15 are respectively fixedly connected with the two positioning parts 9. The positioning parts 9 are plate-shaped, and an L-shaped mounting plate 16 is connected between each positioning part 9 and the corresponding slide block 15. The mounting plate 16 includes a transverse portion 16a and a vertical portion 16b, the transverse portion 16a is fixedly connected to the upper surface of the slider 15, the vertical portion 16b is vertically disposed upward on the transverse portion 16a, and the vertical portion 16b passes through the movable slot 3a1 and then is fixed with the positioning member 9. The spacer 9 abuts on the upper surface of the vertical portion 16b and is fixed to the vertical portion 16b by fastening bolts. A stopper pin 17 facing the other lateral portion 16a is fixed to one of the lateral portions 16a, and a stopper screw 18 opposite to the stopper pin 17 is threadedly coupled to the other lateral portion 16 a. A lock nut 19 is threadedly connected to the stop screw 18, and the lock nut 19 abuts against the mounting plate 16. An opening and closing cylinder 20 is further fixed on the sliding plate 11 behind the guide rail 14, and a hinge plate 21 is arranged forwards and fixed on a piston rod of the opening and closing cylinder 20. Connecting rods 22 are respectively hinged between the hinge plate 21 and the two mounting plates 16, and the two connecting rods 22 are respectively positioned at two sides of the piston rod of the opening and closing cylinder 20. The hinged plate 21 is L-shaped, and includes a vertically arranged fixing part and a horizontally arranged hinged part, the fixing part is fixedly connected with the piston rod of the opening and closing cylinder 20, and the hinged part is arranged forward on the front end surface of the fixing part. The front end of the link 22 is hinged to the lateral portion 16a of the mounting plate 16, and the rear end of the link 22 is hinged to the hinge portion. When the piston rod of the opening and closing cylinder 20 retracts backwards, the two mounting plates 16 are pulled to approach towards each other through the connecting rod 22, so that the positioning pieces 9 approach towards each other, and when the two positioning pieces 9 approach towards each other, a positioning hole 10 is formed at the position of the positioning notch 9a right above the guide groove 3 c; when the piston rod of the opening and closing cylinder 20 extends forwards, the connecting rod 22 pushes the two mounting plates 16 to be away from each other, so that the positioning parts 9 are away from each other, the two positioning parts 9 are away from each other, so that the positioning holes 10 are detached, and the positioning notches 9a are separated from the right upper side of the guide groove 3 c. The place ahead and the rear that lie in slide 11 on the upper surface of bottom plate 2 all are fixed with limit stop 7, and the preceding terminal surface and the rear end face of slide 11 all are fixed with limit bolt 13 corresponding with limit stop 7, realize the restriction of slide 11 sliding range through limit stop 7 and limit bolt 13's cooperation, avoid mounting panel 16 and base plate 3a to take place the striking accident, guarantee material feeding unit job stabilization nature.

The feeding device further comprises a steering group 23, the steering group 23 comprises a material waiting part 24 fixed behind the supporting plate 3, a material waiting groove 24a for placing a workpiece 26 is formed in the material waiting part 24, and the material waiting groove 24a is perpendicular to the guide groove 3 c. The material waiting part 24 is also provided with a discharge port 24b opposite to the feeding port 3d, and the discharge port 24b is communicated with the material waiting groove 24 a. A pushing cylinder 25 is fixed behind the material waiting part 24, and a piston rod of the pushing cylinder 25 extends out to push the workpiece 26 in the material waiting groove 24a out of the material outlet 24 b. The workpiece 26 is diverted from the conveyance in the left-right direction to the conveyance in the front-rear direction by the diverting group 23.

As shown in fig. 1, fig. 3 and fig. 7, the feeding device can realize intermittent continuous feeding, taking feeding of shaft workpieces as an example, the workpieces 26 are in a vertical state, before each step of feeding, a plurality of workpieces 26 are sequentially arranged in a material waiting groove 24a, one of the workpieces 26 is located at a material outlet 24b, two positioning parts 9 are in a state of being away from each other, a piston rod of a feeding cylinder 6 is in a state of extending, and a feeding group 8 is close to the workpiece 24. During feeding, the piston rod of the pushing cylinder 25 extends out to push the workpiece 26 at the discharge port 24b into the guide groove 3c through the feeding port 3d, at this time, the lower end of the workpiece 26 is located in the guide groove 3c, the upper end of the workpiece 26 extends out of the guide groove 3c and is located between the two positioning pieces 9, and the positioning notch 9a at the rearmost end is opposite to the workpiece 26. Then the piston rod of the pushing cylinder 25 retracts, and the next workpiece 26 in the waiting slot 24a is supplemented to the discharge port 24b to wait for feeding. And then the two positioning pieces 9 are closed oppositely, after the two positioning pieces 9 are closed oppositely, a positioning hole 10 is formed at the position of the positioning notch 9a right above the guide groove 3c, the left hole wall surface and the right hole wall surface of the positioning hole 10 do not clamp the workpiece 26, and the front hole wall surface and the rear hole wall surface of the positioning hole 10 form front and rear positioning on the workpiece 26. Then the piston rod of the feeding cylinder 6 retracts, the feeding group 8 moves forwards, and the wall surface of the rear hole of the positioning hole 10 pushes the workpiece 26 to slide forwards in the guide groove 3c along the guide groove 3 c. After the feeding group 8 stops moving forwards after sliding to a set distance, the wall surface of the front hole of the positioning hole 10 can prevent the workpiece 26 from inclining forwards due to inertia, then the two positioning pieces 9 are separated from each other, and the positioning notch 9a is separated from the right upper part of the guide groove 3c, so that the workpiece 26 is separated from the positioning pieces 9. The piston rod of the feed cylinder 6 is then extended and the positioning element 9 is moved backwards and approaches the waiting element 24. The workpiece 26 is thus fed forward in one step, while the workpiece 26 located furthest forward is gripped by the robot for machining. The above steps are repeated continuously for the next workpiece 26 to be machined, thereby achieving intermittent continuous feeding.

When the workpiece 26 slides in the guide groove 3c, the left and right side walls of the guide groove 3c form a left and right positioning function for the workpiece 26, and the workpiece 26 is prevented from moving in the left and right directions, so that the left and right side wall surfaces of the positioning hole 10 can be positioned left and right of the workpiece 26 without being attached to the workpiece 26, and thus, the workpiece 26 does not need to be fixed by clamping the workpiece 26 after the two positioning members 9 are closed in opposite directions, and only the front and rear positioning functions of the front and rear side wall surfaces of the positioning hole 10 are needed. Because the positioning member 9 does not need to clamp the workpiece 26, if friction occurs between the workpiece 26 and the supporting plate 3 and the workpiece 26 vibrates due to dimensional errors and position errors in the process that the workpiece 26 slides in the guide groove 3c, the vibration generated by the workpiece 26 cannot be transmitted to the positioning member 9 to cause the vibration of the whole feeding set 8, and the feeding stability of the feeding device is ensured. Therefore, the feeding device can feed materials in a mode of not clamping the workpiece 26, the workpiece is positioned left and right only through the guide groove 3c, and the workpiece is positioned front and back through the positioning holes 10 after the positioning pieces 9 are closed oppositely, so that the workpiece 26 can be kept stable in the forward moving process, namely the feeding device can ensure the feeding stability under the condition of not clamping the workpiece. The feeding device breaks through the conventional cognition of stable feeding by clamping the workpiece 26, and stable feeding is realized under the condition that the workpiece 26 is not clamped by reverse design.

In addition, if clearance fit is formed between the workpiece 26 and the positioning hole 10, in the process that the workpiece 26 slides in the guide groove 3c, not only the two side walls of the guide groove 3c form left-right direction positioning for the workpiece 26, but also the left side hole wall surface and the right side hole wall surface of the positioning hole 10 form left-right direction positioning for the workpiece 26, that is, the workpiece 26 is simultaneously positioned by the side walls of the guide groove 3c and the positioning piece 9 in the left-right direction, so that the workpiece 26 smoothly and stably slides forwards, and the feeding of the feeding device is stable.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Claims

1. The utility model provides a feeding device, includes layer board (3) and but pay-off group (8) of back-and-forth movement, pay-off group (8) can draw close in opposite directions and carry on the back away from each other including two setting elements (9) that are located layer board (3) top, two setting elements (9) about in the direction, two liang of relative one sides of setting element (9) are provided with location notch (9a), its characterized in that, be provided with guide way (3c) that extend along the fore-and-aft direction on the upper surface of layer board (3), form locating hole (10) in location notch (9a) department directly over guide way (3c) after two setting elements (9) draw close in opposite directions.

2. The feeding device according to claim 1, wherein the supporting plate (3) comprises a base plate (3a), two guide strips (3b) are fixedly connected to the upper surface of the base plate (3a), the two guide strips (3b) are arranged side by side left and right, and the guide groove (3c) is formed between the two guide strips (3b) on the upper surface of the base plate (3 a).

3. The feeding device according to claim 2, wherein the guide strip (3b) is fixed to the base plate (3a) by a connecting bolt (3e), an adjusting hole (3b2) extending in the left-right direction is formed in the upper surface of the guide strip (3b), and the connecting bolt (3e) penetrates through the adjusting hole (3b2) and then is in threaded connection with the base plate (3 a).

4. The feeding device according to claim 1, wherein the rear end of the guide groove (3c) is opened to form a feeding port (3d), and the feeding port (3d) has guide surfaces (3b1) obliquely arranged on both sides thereof.

5. The feeding device according to any one of claims 1 to 4, characterized in that a sliding plate (11) capable of moving back and forth is arranged below the supporting plate (3), a guide rail (14) extending in the left-right direction is fixed on the upper surface of the sliding plate (11), two sliding blocks (15) are slidably mounted on the guide rail (14), and the two sliding blocks (15) are respectively and fixedly connected with the two positioning parts (9).

6. The feeding device according to claim 5, characterized in that the positioning members (9) are plate-shaped, an L-shaped mounting plate (16) is connected between each positioning member (9) and the corresponding slider (15), the mounting plate (16) comprises a transverse portion (16a) and a vertical portion (16b), the transverse portion (16a) is fixedly connected to the upper surface of the slider (15), the vertical portion (16b) is vertically arranged on the transverse portion (16a) in the upward direction, a movable groove (3a1) corresponding to the mounting plate (16) is formed in the supporting plate (3), and the vertical portion (16b) is fixed with the positioning members (9) after passing through the movable groove (3a 1).

7. The feeding device according to claim 6, characterized in that an opening and closing cylinder (20) is further fixed on the sliding plate (11), a hinged plate (21) is fixed on a piston rod of the opening and closing cylinder (20), connecting rods (22) are respectively hinged between the hinged plate (21) and the two mounting plates (16), and the two connecting rods (22) are respectively positioned on two sides of the piston rod of the opening and closing cylinder (20).

8. The feeding device according to claim 6, characterised in that a stop pin (17) is fixed to one of the transverse portions (16a) towards the other transverse portion (16a), and a stop screw (18) opposite the stop pin (17) is screwed to the other transverse portion (16 a).

9. The feeding device according to claim 5, characterized in that a bottom plate (2) is fixed below the sliding plate (11), the bottom plate (2) and the supporting plate (3) are fixed through supporting columns (4), sliding rails (5) extending in the front-back direction are fixed on the bottom plate (2), sliding blocks (12) are slidably mounted on the sliding rails (5), the sliding plate (11) is fixed on the sliding blocks (12), a feeding cylinder (6) is further fixed on the bottom plate (2), and a piston rod of the feeding cylinder (6) is connected with the sliding plate (11) and can drive the sliding plate (11) to slide back and forth.

10. The feeding device according to any one of claims 1 to 4, characterized in that a workpiece (24) to be fed is fixed behind the supporting plate (3), a workpiece slot (24a) for placing a workpiece (26) is formed in the workpiece (24), a discharge port (24b) opposite to the feeding port (3d) is further formed in the workpiece (24), the discharge port (24b) is communicated with the workpiece slot (24a), a pushing cylinder (25) is fixed behind the workpiece (24), and a piston rod of the pushing cylinder (25) extends out to push the workpiece (26) in the workpiece slot (24a) out of the discharge port (24 b).