CN214767864U

CN214767864U - Bar drawing machine

Info

Publication number: CN214767864U
Application number: CN202121080886.7U
Authority: CN
Inventors: 吴剑铭
Original assignee: Hangzhou Wanle Power Equipment Co ltd
Current assignee: Hangzhou Wanle Power Equipment Co ltd
Priority date: 2021-05-19
Filing date: 2021-05-19
Publication date: 2021-11-19
Anticipated expiration: 2031-05-19

Abstract

The utility model relates to a bar drawbench, which comprises a frame, rotate the chain of connection on the frame, the external fixed surface of chain has the bottom plate, the bottom plate is improved level and is provided with intercrossing pivoted first clamp splice and second clamp splice, the one end horizontal rotation of first clamp splice is connected with first connecting rod, the one end horizontal rotation that the second clamp splice is close to first connecting rod is connected with the second connecting rod, the vertical first pivot that is provided with on the bottom plate, first connecting rod, the other end of second connecting rod all rotates to be connected in first pivot, be provided with the second pivot that slides along the chain drive direction on the bottom plate, the second pivot rotates the junction of connecting at first clamp splice and second clamp splice, first connecting rod is kept away from to the second clamp splice, the one end of second connecting rod forms the clamp mouth, be provided with the actuating mechanism who is used for driving second pivot reciprocating sliding on the bottom plate. This application has the effect that improves the centre gripping stability of anchor clamps and rod.

Description

Bar drawing machine

Technical Field

The application relates to the field of metal processing, in particular to a bar drawing machine.

Background

At present, in the processing process of some metal parts, a drawing machine is required for processing. The drawing machine can apply pulling force to some metal bars with larger outer diameter, and after the metal bars pass through the drawing die, the sectional shape and the size of the blank are the same as those of the outlet of the die hole of the drawing die. Therefore, the shape and the size of the die hole of the drawing die are changed, and a corresponding drawing formed product can be obtained.

The existing drawing machine generally comprises a machine base, a chain which is rotationally connected to the machine base, a clamp which is fixed on the chain and used for clamping one end of a bar material, and a drawing die which is arranged at one end of the machine base; one end of the bar passes through a die hole on the drawing die and then is clamped on the clamp, and the clamp and the bar are driven by the chain to move and stretch.

In view of the above-mentioned related art, when one end of the bar is clamped by the clamp, there is a case where the clamp slips with the bar due to a large resistance of the bar to the drawing die, and re-clamping is required, and thus there is a need for improvement.

SUMMERY OF THE UTILITY MODEL

In order to improve the centre gripping stability of anchor clamps and rod, this application provides a rod drawbench.

The application provides a rod draws and adopts following technical scheme: a bar drawing machine comprises a machine base and a chain which is rotationally connected with the machine base, wherein a bottom plate is fixed on the outer surface of the chain, a first clamping block and a second clamping block which are mutually crossed and rotated are horizontally arranged on the bottom plate, one end of the first clamping block is horizontally and rotatably connected with a first connecting rod, one end of the second clamping block close to the first connecting rod is horizontally and rotatably connected with a second connecting rod, a first rotating shaft is vertically arranged on the bottom plate, the other ends of the first connecting rod and the second connecting rod are rotatably connected on a first rotating shaft, a second rotating shaft which slides along the chain transmission direction is arranged on the bottom plate, the second rotating shaft is rotatably connected to the intersection of the first clamping block and the second clamping block, one ends, far away from the first connecting rod and the second connecting rod, of the first clamping block and the second clamping block form clamping openings, and a driving mechanism used for driving the second rotating shaft to slide in a reciprocating mode is arranged on the bottom plate.

By adopting the technical scheme, the first clamping block and the second clamping block are connected and matched with the first connecting rod and the second connecting rod at the position, far away from the clamping opening, of the intersection to form a linkage quadrilateral mechanism; when one end of a bar is clamped, one end of the bar is placed into the clamping opening, then the driving mechanism drives the second rotating shaft to move, so that the distance between the first rotating shaft and the second rotating shaft which are positioned at the opposite corners of the quadrilateral mechanism is increased, the first connecting rod and the second connecting rod are closed, the parts of the first clamping block and the second clamping block which are positioned at the clamping opening are synchronously closed, and the bar is clamped at the clamping opening; when the chain drives bottom plate and whole quadrangle mechanism to move in order to stimulate the rod, because the resistance between rod both sides and first clamp splice, the second clamp splice, the rod can be pressed from both sides tighter when being promoted for the rod is difficult to break away from with anchor clamps, realizes improving the effect of the centre gripping stability of anchor clamps and rod.

Preferably, the upper end of first pivot is provided with first connecting block, the upper end of second pivot is provided with the second connecting block, actuating mechanism selects to be the cylinder, the both ends of cylinder are connected with first connecting block, second connecting block respectively, the flexible direction of piston rod of cylinder is unanimous with the moving direction of second pivot.

Through adopting above-mentioned technical scheme, be connected the both ends of cylinder with first connecting block and second connecting block respectively, can make things convenient for the cylinder both ends to be connected with first pivot, second pivot, the piston rod when flexible, alright drive the second connecting block and carry out reciprocating motion, and then drive the second pivot and carry out reciprocating motion.

Preferably, the first clamping block and the second clamping block are located on the opposite sides of the clamping openings and are provided with clamping heads, and the opposite sides of the clamping heads are provided with anti-skid lines.

Through adopting above-mentioned technical scheme, draw in as first clamp splice, second clamp splice for the mouth that presss from both sides contracts, drives two clamp splices and presss from both sides the bar both sides tightly, and the anti-skidding line can improve the tight stability of clamp to the bar.

Preferably, the chuck is detachably connected with the first clamping block and the second clamping block.

Through adopting above-mentioned technical scheme, can conveniently change the maintenance to first clamp splice, second clamp splice.

Preferably, the first clamping block and the second clamping block are located at the clamping opening and are vertically provided with wedge-shaped grooves in opposite directions, wedge-shaped blocks are fixed on the back of the clamping head, and the wedge-shaped blocks are inserted into the wedge-shaped grooves from top to bottom.

Through adopting above-mentioned technical scheme, through setting up vertical wedge groove, when the installation chuck, can be with the vertical wedge that inserts the wedge at the chuck back in the wedge groove for the wedge card is in the wedge groove, and the wedge groove can restrict the free removal of wedge at the horizontal direction, realizes the chuck and can dismantle fast of first clamp splice, second clamp splice and be connected, and can guarantee the normal tight use of clamp of chuck.

Preferably, the first clamping block and the second clamping block are provided with a supporting part at the lower end of the wedge-shaped groove, and the lower end surface of the wedge-shaped block is attached to the supporting part.

Through adopting above-mentioned technical scheme, through setting up the supporting part, after the wedge goes into the wedge groove from last down card, the lower extreme of wedge can restrict the wedge and continue to move down for the lower extreme of wedge can not contact the bottom plate, and then avoids wedge and bottom plate to take place the friction.

Preferably, a sliding groove is formed in the bottom plate along the transmission direction of the chain, and a sliding block sliding in the sliding groove is arranged at the lower end of the second rotating shaft.

Through adopting above-mentioned technical scheme, through setting up the cooperation between slider and the spout, the spout can carry on spacingly to the slider for the slider slides along the length direction of spout, sets up along sliding of chain moving direction in order to realize the second pivot on the bottom plate.

Preferably, the two sides of the base in the moving direction of the chain are provided with guide rails, four corners of the bottom plate are rotatably provided with rollers, and the rollers are connected to the guide rails in a rolling manner.

Through adopting above-mentioned technical scheme, through the cooperation between guide rail and the gyro wheel, the gyro wheel can support the bottom plate, and when the chain is driving the bottom plate and is removing, the gyro wheel can roll along the slide rail for the removal of bottom plate is smooth and easy more steady.

In summary, the present application includes at least one of the following beneficial technical effects:

(1) through the arrangement of the first clamping block, the second clamping block, the first connecting rod, the second connecting rod and the driving mechanism in a matching manner, when the bar is drawn, the first clamping block and the second clamping block at the clamping opening clamp the bar more and more tightly, so that the bar is not easy to separate from the clamp, and the effect of improving the clamping stability of the clamp and the bar is realized;

(2) the clamping stability of the bar can be further improved by arranging the matching between the clamping head and the anti-skid grains;

(3) through the cooperation that sets up between wedge and the wedge groove, can realize the quick detachable connection between chuck and first clamp splice, the second clamp splice, conveniently change the chuck.

Drawings

FIG. 1 is a schematic view of the drawing machine of the present embodiment;

FIG. 2 is a schematic view of a partial structure of the drawing machine of the present embodiment;

fig. 3 is an exploded view of the clip according to the present embodiment.

Reference numerals: 1. a machine base; 2. a chain; 3. drawing a die; 4. a servo motor; 5. a base plate; 6. a clamp; 61. a first link; 62. a second link; 63. a first clamping block; 64. a second clamp block; 65. a drive mechanism; 7. a die hole; 8. a first rotating shaft; 9. a second rotating shaft; 10. a first connection block; 11. a second connecting block; 12. a chute; 13. a slider; 14. a chuck; 15. anti-skid lines; 16. a wedge-shaped groove; 17. a wedge block; 18. a support portion; 19. a guide rail; 20. and a roller.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses a bar drawbench. Referring to fig. 1, the drawing machine comprises a base 1, a chain 2 horizontally and rotatably connected to the base 1, and a drawing die 3 installed at one end of the base 1, wherein the drawing die 3 is close to the end of the chain 2, and the chain 2 is driven by a servo motor 4 installed on the base 1. A horizontally arranged bottom plate 5 is locked on the outer surface of the chain 2, and a clamp 6 for clamping one end of the bar is arranged on the upper surface of the bottom plate 5; one end of the bar passes through the die hole 7 of the drawing die 3 and then is clamped on the clamp 6, and the clamp 6 draws the bar to continuously pass through the die hole 7 when the bottom plate 5 moves along with the chain 2 so as to draw the bar with the shape consistent with the die hole 7.

Specifically, referring to fig. 2 and 3, the clamp 6 includes a first connecting rod 61 and a second connecting rod 62, one ends of which are horizontally hinged to each other, a first clamping block 63 and a second clamping block 64 which are horizontally arranged and rotate in a mutually crossing manner, and a driving mechanism 65 for driving the crossing position of the first clamping block 63 and the second clamping block 64 to move. The crossing position slides along the moving direction of the chain 2, a first rotating shaft 8 is vertically fixed on the bottom plate 5, and one ends of the first connecting rod 61 and the second connecting rod 62 are hinged at the first rotating shaft 8. A second rotating shaft 9 which moves and slides in a square shape along the chain 2 is vertically arranged on the bottom plate 5, the second rotating shaft 9 is positioned at the intersection position of the first clamping block 63 and the second clamping block 64, and the second rotating shaft 9 is used for realizing the mutual rotation between the first clamping block 63 and the second clamping block 64; one end of the first clamping block 63 is horizontally and rotatably connected with one end of the first connecting rod 61 far away from the first rotating shaft 8, and one end of the second clamping block 64 close to the first connecting rod 61 is horizontally and rotatably connected with the second connecting rod 62; one ends of the first clamping block 63 and the second clamping block 64, which are far away from the first connecting rod 61 and the second connecting rod 62, form clamping openings for clamping the bars; the first clamping block 63 and the second clamping block 64 are located at the position of the second rotating shaft 9 far away from the clamping opening, and form a linkage quadrilateral mechanism with the first connecting rod 61 and the second connecting rod 62, and the first rotating shaft 8 and the second rotating shaft 9 are located at the diagonal positions of the quadrilateral mechanism.

When the driving mechanism 65 drives the second rotating shaft 9 to move, so that the distance between the first rotating shaft 8 and the second rotating shaft 9 is reduced, the first connecting rod 61 and the second connecting rod 62 are folded, and simultaneously the first clamping block 63 and the second clamping block 64 are driven to be folded, so that the clamping opening is reduced, and the two sides of the bar are clamped; and resistance exists between the two sides of the bar and the first clamping block 63 and the second clamping block 64, so that the clamping opening has the tendency of continuously gathering and clamping, and the bar can be clamped more tightly when being pulled, thereby realizing the effect of improving the clamping stability of the clamp 6 and the bar.

A first connecting block 10 is fixed at the upper end of the first rotating shaft 8, and a second connecting block 11 is fixed at the upper end of the second rotating shaft 9; in this embodiment, the driving mechanism 65 is selected as an air cylinder, a piston rod of the air cylinder is fixedly connected to the first connecting block 10, a cylinder body of the air cylinder is fixedly connected to the second connecting block 11, and a telescopic direction of the piston rod of the air cylinder is consistent with a moving direction of the second rotating shaft 9. First connecting block 10, the installation of second connecting block 11 cylinder of being convenient for, piston rod alright drive second connecting block 11 and second pivot 9 and carry out synchronous movement when flexible the removal simultaneously, realize opening and shutting of pressing from both sides the mouth.

Wherein, the bottom plate 5 is provided with a sliding groove 12 along the transmission direction of the chain 2, and the lower end of the second rotating shaft 9 is fixed with a sliding block 13 sliding in the sliding groove 12, so that the sliding of the second rotating shaft 9 along the transmission direction of the chain 2 on the bottom plate 5 is realized.

The first clamping block 63 and the second clamping block 64 are positioned on the opposite surfaces of the clamping openings and can be detachably provided with clamping heads 14, anti-skid grains 15 are processed on the opposite surfaces of the two clamping heads 14, and each anti-skid grain 15 is vertically arranged; through chuck 14, can be more stable press from both sides tightly the rod, and chuck 14 can conveniently be dismantled and change.

Specifically, the first clamping block 63 and the second clamping block 64 are positioned at the clamping opening, and wedge-shaped grooves 16 are formed in opposite surfaces of the first clamping block and the second clamping block, and the wedge-shaped grooves 16 are vertically formed; the back surfaces of the two clamping heads 14, which are far away from each other, are integrally connected with wedge blocks 17, and the heights of the clamping heads 14 and the wedge blocks 17 are the same; when the chuck 14 is installed, the wedge block 17 can be inserted into the wedge-shaped groove 16 from top to bottom, and the wedge-shaped groove 16 can limit the chuck 14 to freely move in the horizontal direction, so that the chuck 14 can be quickly and detachably installed. Meanwhile, the supporting part 18 is integrally connected to the lower end of the wedge-shaped groove 16 of the first clamping block 63 and the second clamping block 64, and the lower end of the wedge-shaped block 17 is attached to the upper end face of the supporting part 18, so that the lower end of the chuck 14 is prevented from contacting the bottom plate 5.

In addition, the guide rails 19 are fixed on two sides of the long side of the base 1 in the moving direction of the chain 2, the bottom plate 5 is rectangular, the rollers 20 are rotatably mounted at four corners of the bottom plate 5, the rollers 20 are connected to the guide rails 19 in a rolling manner, and the rollers 20 can support the bottom plate 5, so that when the chain 2 drives the bottom plate 5 to move, the bottom plate 5 can slide more smoothly and stably.

The implementation principle of the bar drawing machine in the embodiment of the application is as follows: when the automatic drawing device works, one end of a bar passes through the drawing die 3, then the servo motor 4 drives the chain 2 to move, and the bottom plate 5 is driven to horizontally slide to a position close to the drawing die 3; one end of the bar is positioned in the clamping opening, then the second rotating shaft 9 is driven to move through the air cylinder, so that the distance between the first rotating shaft 8 and the second rotating shaft 9 is increased, the first connecting rod 61 and the second connecting rod 62 are folded, the first clamping block 63 and the second clamping block 64 are driven to be folded, and finally the clamping opening is driven to be folded, so that the two clamping heads 14 on the clamping opening clamp two sides of the bar; because resistance exists between the two sides of the bar and the first clamping block 63 and the second clamping block 64, the clamping opening of the bar has the tendency of continuously gathering and clamping when the bar is pulled, so that the bar is not easy to separate from the clamp 6, and the effect of improving the clamping stability of the clamp 6 and the bar is realized.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a bar drawbench, includes frame (1), rotates chain (2) of connection on frame (1), its characterized in that: the outer fixed surface of chain (2) has bottom plate (5), bottom plate (5) are improved level and are provided with intercrossing pivoted first clamp splice (63) and second clamp splice (64), the one end level of first clamp splice (63) is rotated and is connected with first connecting rod (61), the one end level that second clamp splice (64) is close to first connecting rod (61) is rotated and is connected with second connecting rod (62), vertically on bottom plate (5) be provided with first pivot (8), the other end of first connecting rod (61), second connecting rod (62) all rotates and connects on first pivot (8), be provided with on bottom plate (5) along chain (2) transmission direction second pivot (9) that slide, second pivot (9) rotate and connect the intersection of first clamp splice (63) and second clamp splice (64), first connecting rod (61) are kept away from to first clamp splice (63), second clamp splice (64), One end of the second connecting rod (62) forms a clamping opening, and a driving mechanism (65) for driving the second rotating shaft (9) to slide in a reciprocating mode is arranged on the bottom plate (5).

2. A bar drawing machine according to claim 1, characterized in that: the upper end of first pivot (8) is provided with first connecting block (10), the upper end of second pivot (9) is provided with second connecting block (11), actuating mechanism (65) select to be the cylinder, the both ends of cylinder are connected with first connecting block (10), second connecting block (11) respectively, the flexible direction of piston rod of cylinder is unanimous with the moving direction of second pivot (9).

3. A bar drawing machine according to claim 1, characterized in that: the first clamping block (63) and the second clamping block (64) are located on the opposite surfaces of the clamping openings and are provided with clamping heads (14), and the opposite surfaces of the clamping heads (14) are provided with anti-skid lines (15).

4. A bar drawing machine according to claim 3, characterized in that: the clamping head (14) is detachably connected with the first clamping block (63) and the second clamping block (64).

5. A rod drawing machine according to claim 4, characterized in that: first clamp splice (63) and second clamp splice (64) are located nip department and the equal vertical wedge groove (16) that is provided with of one side in opposite directions, the back of chuck (14) is fixed with wedge (17), wedge (17) are from last down inserting locate in wedge groove (16).

6. A rod drawing machine according to claim 5, characterized in that: the first clamping block (63) and the second clamping block (64) are arranged at the lower end of the wedge-shaped groove (16) and are provided with supporting parts (18), and the lower end face of the wedge-shaped block (17) is attached to the supporting parts (18).

7. A bar drawing machine according to claim 1, characterized in that: and a sliding groove (12) is formed in the bottom plate (5) along the transmission direction of the chain (2), and a sliding block (13) sliding in the sliding groove (12) is arranged at the lower end of the second rotating shaft (9).

8. A bar drawing machine according to claim 1, characterized in that: guide rails (19) are arranged on two sides of the machine base (1) in the moving direction of the chain (2), rollers (20) are arranged at four corners of the bottom plate (5) in a rotating mode, and the rollers (20) are connected to the guide rails (19) in a rolling mode.