CN210677226U

CN210677226U - Bar stock pushing device

Info

Publication number: CN210677226U
Application number: CN201921545966.8U
Authority: CN
Inventors: 郑金良
Original assignee: HANGZHOU ZHENGCHIDA PRECISION MACHINERY CO Ltd
Current assignee: HANGZHOU ZHENGCHIDA PRECISION MACHINERY CO Ltd
Priority date: 2019-09-17
Filing date: 2019-09-17
Publication date: 2020-06-05
Anticipated expiration: 2029-09-17

Abstract

The utility model relates to a production facility of wrist-watch part. The purpose provides a bar blevile of push, and the device should have the characteristics that the operation is reliable, production efficiency is high. The technical scheme is as follows: bar blevile of push, its characterized in that: the device comprises a rack, a guide mechanism arranged on the rack and used for guiding the bar stock and a pushing frame to move, a pushing frame positioned in the guide mechanism in a horizontally moving manner, a forward mechanism used for driving the pushing frame to move forward, a backward mechanism used for driving the pushing frame to move backward, and a butt joint mechanism used for mounting the bar stock on the pushing frame; the guide mechanism comprises a first sliding chute and a second sliding chute which are horizontally fixed on the rack, a fixed baffle and a movable baffle which are arranged at the notch of the second sliding chute, and an opening and closing cylinder for driving the movable baffle to horizontally move; the retreating mechanism comprises a retreating motor, a driving wheel arranged on a rotating shaft of the retreating motor, a pulley block arranged on the rack, a first connecting rope surrounding the driving wheel and the pulley block, and a limiting block fixed with the first connecting rope.

Description

Bar stock pushing device

Technical Field

The utility model relates to a production facility of wrist-watch part specifically is a bar blevile of push.

Background

The parts inside the mechanical watch are fastened together through small screws, and the screws are mainly processed from bar stock (such as SK4F), and the specific processing steps are as follows: firstly, loading the bar 50 into a material pushing device, horizontally pushing the bar into a chuck of a machine tool by the material pushing device, and then processing the end part of the bar into a screw by a cutting knife of the machine tool; when the machine tool finishes processing one screw (the processed screw falls into the material box after being cut off and separated from the bar stock), the material pushing device needs to continuously horizontally push the rest bar stocks into a chuck of the machine tool for a certain distance so as to process the next screw; the process is repeated until the whole bar becomes waste when the length of the bar is shortened to a certain length, and at the moment, a new bar needs to be manually replaced to realize continuous production. The existing material pushing device has the defects of complex structure and high failure rate, influences the normal production speed and needs further improvement.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming not enough among the above-mentioned background art, providing a bar blevile of push, the device should have the characteristics that the operation is reliable, production efficiency is high.

The technical scheme of the utility model is that:

bar blevile of push, its characterized in that: the device comprises a rack, a guide mechanism arranged on the rack and used for guiding the bar stock and a pushing frame to move, a pushing frame positioned in the guide mechanism in a horizontally moving manner, a forward mechanism used for driving the pushing frame to move forward, a backward mechanism used for driving the pushing frame to move backward, and a butt joint mechanism used for mounting the bar stock on the pushing frame;

the guide mechanism comprises a first sliding chute and a second sliding chute which are horizontally fixed on the rack, a fixed baffle and a movable baffle which are arranged at the notch of the second sliding chute, and an opening and closing cylinder for driving the movable baffle to horizontally move;

the retreating mechanism comprises a retreating motor, a driving wheel arranged on a rotating shaft of the retreating motor, a pulley block arranged on the rack, a first connecting rope surrounding the driving wheel and the pulley block, and a limiting block fixed with the first connecting rope;

the advancing mechanism comprises a rolling wheel which is rotatably positioned at the left end of the rack, a counterweight arranged below the rack, a second connecting rope which is wound on a wheel rim of the rolling wheel and connected with the pushing frame, and a third connecting rope which is wound on a shaft ring of the rolling wheel and connected with the counterweight;

the pushing frame comprises a pushing block which is slidably positioned on the first connecting rope and fixed with the second connecting rope, a pushing plate which is vertically fixed at the bottom of the pushing block, and a sleeve which is fixed with the pushing plate through a pushing rod and can slide along the sliding groove; the front end of the sleeve is provided with a jack for inserting a bar;

the butt joint mechanism comprises a pair of first air cylinders and a pair of second air cylinders which are sequentially arranged between the first sliding groove and the second sliding groove and are horizontally arranged, the first air cylinders are symmetrically fixed on two sides of the rack, the second air cylinders are symmetrically positioned on two sides of the rack in an axially sliding mode through a connecting frame, the third air cylinders are fixed at the bottom of the rack, piston rods of the third air cylinders are fixed with the connecting frame, and clamping blocks used for clamping bars or sleeves are arranged on the first air cylinders and the second air cylinders.

The clamping blocks are provided with a plurality of clamping jaws which are arranged in a vertically staggered manner, and the clamping jaws of the two clamping blocks which are symmetrically arranged are also arranged in a staggered manner.

And a material box for placing the residual stub bar is arranged below the rack and the butt joint mechanism.

The right end of the first sliding groove is provided with a first sensor, the left end of the second sliding groove is provided with a second sensor, the material box is provided with a third sensor, and the fixed baffle is provided with a fourth sensor.

The docking mechanism further comprises a fourth cylinder located between the second cylinder and the second chute and arranged horizontally.

The pulley block comprises two first guide wheels and two second guide wheels, the first guide wheels can be rotatably positioned at two ends of the rack around a vertical axis, and the second guide wheels are arranged above the driving wheels and can be rotatably positioned on the side surface of the rack around a horizontal axis; the first connecting rope sequentially surrounds the first guide wheel, the second guide wheel and the driving wheel.

The advancing mechanism further comprises two third guide wheels which can be rotatably positioned on the side face of the rack around a horizontal axis, one end of a third connecting rope is wound on the reel shaft ring, the other end of the third connecting rope is wound around the third guide wheels and then connected with a balance weight, and therefore the pushing frame for pushing the bar is provided with pushing force through the second connecting rope wound on the reel wheel ring.

The utility model has the advantages that:

the utility model discloses a push away frame, guiding mechanism, docking mechanism, advancing mechanism and retreat the cooperation of mechanism, can realize in proper order that the bar is adorned and is pushed away the frame, send into the lathe, pull out the lathe, change actions such as new bar, consequently improved the degree of automation of device, guaranteed the reliability of operation, improved production efficiency and reduced manufacturing cost.

Drawings

Fig. 1 is a schematic view of the structure of the present invention.

Fig. 2 is a schematic rear view of the present invention.

Fig. 3 is one of the schematic top views of the present invention.

Fig. 4 is a second schematic top view of the present invention.

Fig. 5 is one of the operation states (top view structure) of the forward and backward moving mechanisms according to the present invention.

Fig. 6 is a second schematic view (top view structure) of the working state of the forward and backward moving mechanisms according to the present invention.

Fig. 7 is a third schematic view (top view structure) illustrating the operation states of the forward moving mechanism and the backward moving mechanism according to the present invention.

Fig. 8 is a schematic view of the front view structure of the middle pushing frame of the present invention.

Fig. 9 is a schematic top view of the middle pushing frame of the present invention.

Fig. 10 is a right-side view structural diagram of the middle pushing frame of the present invention.

Fig. 11 is a schematic diagram of the right view of the second guide rail according to the present invention (the movable baffle is folded with the fixed baffle).

Fig. 12 is a second structural diagram of the second guide rail according to the present invention (the movable baffle is separated from the fixed baffle).

Fig. 13 is a schematic top view of the first cylinder according to the present invention.

Fig. 14 is a structural diagram of the first cylinder in the right view of the present invention.

Fig. 15 is a right-view structural diagram of the separated state of the middle clamping block of the present invention.

Fig. 16 is a right-view structural diagram of the middle clamping block in a closed state.

Detailed Description

The present invention will be further described with reference to the drawings attached to the specification, but the present invention is not limited to the following embodiments.

As shown in fig. 1, the bar pushing device includes a frame 40 (the length of the frame is 6-8 m), and a guiding mechanism, a pushing frame, a forward mechanism, a backward mechanism and a butt mechanism respectively disposed on the frame.

The guide mechanism is arranged at the top of the frame and used for guiding the bar stock to move. The guide mechanism comprises a first sliding chute 1, a second sliding chute 2, a fixed baffle 3, a movable baffle 4 and an opening and closing cylinder 5. The first sliding groove and the second sliding groove are horizontally fixed on the rack, the first sliding groove and the second sliding groove are coaxially arranged, and a certain distance is kept between the two sliding grooves. As shown in fig. 1, the first sliding chute is fixed on the right side of the rack, the second sliding chute is fixed on the left side of the rack, and the left side of the second sliding chute is further provided with a positioning tube 31 arranged horizontally (the tube hole of the positioning tube is aligned with the sliding chute). The opening and closing cylinder is fixed with the frame through an opening and closing cylinder support (omitted in the figure), the fixed baffle and the movable baffle are arranged above the notch of the second sliding groove, the fixed baffle is fixed on the right side (the right side of the figure 11) of the notch of the second sliding groove, and the movable baffle is arranged on the left side (the left side of the figure 11) of the notch of the second sliding groove and fixed with a piston rod of the opening and closing cylinder. The telescopic direction (vertical direction in figure 3) of the piston rod of the opening and closing cylinder is perpendicular to the length direction (horizontal direction in figure 3) of the frame. The opening and closing cylinder is used for driving the movable baffle to move horizontally, when the movable baffle and the fixed baffle are folded (a certain gap is still kept between the two baffles and used as a sliding way for the push plate to move), the notch of the second sliding groove is closed (the bar falls into the second sliding groove), and when the movable baffle and the fixed baffle are separated, the notch of the second sliding groove is opened. Because the bar is softer and the length is longer (3-4 meters), when the push frame pushes the bar to move axially along the second sliding groove, the movable baffle and the fixed baffle form a limited space when being folded, and the bar can be effectively prevented from being deformed and bent.

The pushing frame can move along the guide mechanism. As shown in fig. 8, the pushing frame comprises a pushing block 14, a pushing plate 15 vertically fixed at the bottom of the pushing block, a pushing rod 16 horizontally arranged and having a right end (the right end in fig. 8) fixed with the pushing plate, and a sleeve 17 fixed at the left end (the left end in fig. 8) of the pushing rod. The push pedal is on a parallel with the length direction axis of frame with the push rod, and telescopic external diameter is less than the internal diameter of spout, and telescopic left end is equipped with the jack that is used for the cartridge bar, and the internal diameter of jack slightly is less than the external diameter of bar, and the sleeve outside is equipped with a plurality of expansion joints (omit in the figure) to the sleeve can press from both sides tight bar. The sleeve is fixed with the push rod through a thread structure, so that sleeves with different sizes can be replaced to be matched with bars of various types for use. As shown in fig. 12, when the push frame moves in the guide mechanism, the sleeve and the push rod move horizontally along the sliding groove, the push block moves horizontally above the first sliding groove and the second sliding groove (including above the fixed baffle and the horizontal baffle), and the push plate slides along the slide way (formed by the gap between the movable baffle and the fixed baffle).

The retreating mechanism is used for driving the pushing frame to move backwards (the pushing frame moves horizontally and rightwards in fig. 1). The retreating mechanism comprises a retreating motor 6, a driving wheel 7, a pulley block, a first connecting rope 8 and a limiting block 9. The retreating motor is fixed at the bottom of the rack and located below the first sliding groove, the driving wheel is installed on a rotating shaft of the retreating motor, the first connecting rope surrounds the driving wheel and the pulley block, and the limiting block is fixed with the first connecting rope. The pulley block comprises two first guide wheels 28 and two second guide wheels 29 which are rotatably positioned on the rack, the two first guide wheels are respectively arranged at two ends of the length direction of the rack, the rotating axes of the two first guide wheels are vertically arranged, the two second guide wheels are arranged on the side face of the rack and are positioned above the driving wheels, the rotating axes of the two second guide wheels are horizontally arranged, the first guide wheels and the second guide wheels are arranged on the same horizontal plane, and a first connecting rope is wound on the first guide wheels, the second guide wheels and the driving wheels. When the retreating motor is started, the limiting block can be driven to horizontally move between the two first guide wheels. The pushing block of the pushing frame can be slidably positioned on the first connecting rope and is positioned on the right side (the right side in figure 1) of the limiting block, and the pushing frame can be driven by the limiting block to horizontally move rightwards.

The advancing mechanism is used for driving the pushing frame to move forwards (the pushing frame moves horizontally leftwards in the figure 1). The advancing mechanism comprises a winding wheel 10, a counterweight 11, a second connecting rope 12, a third connecting rope 13 and two third guide wheels 30. The rolling wheel includes coaxial fixed wheel rim (the great position of external diameter) and shaft ring (the less position of external diameter), and the rolling wheel can be fixed a position in the frame left end around horizontal axis through rolling wheel support 10.1, and the counter weight setting is in the frame below, and the third leading wheel can be fixed a position in the frame side around horizontal axis rotation, and the one end winding of second connection rope pushes away the frame on the rolling wheel rim and other end connection, and the one end winding of third connection rope is on rolling wheel shaft ring and the counter weight is connected after the other end winds the third leading wheel. The second connecting rope and the third connecting rope are wound on the winding wheel in opposite directions. The balance weight applies horizontal leftward (left side of figure 1) pulling force to the pushing frame through the two connecting ropes and the rolling wheel, so that the bar stock is ensured to have a horizontal leftward movement trend, and balance weights with different weights can be configured according to the size and the model of the bar stock.

The butt joint mechanism can be used for mounting the bar stock on the push frame and also can be used for pulling the bar stock out of the push frame. The butt joint mechanism comprises a pair of first air cylinders 18, a pair of second air cylinders 19, a third air cylinder 21, a fourth air cylinder 27 and clamping blocks 22 which are respectively arranged on piston rods of the first air cylinders and the second air cylinders.

The first cylinder, the second cylinder and the fourth cylinder are sequentially and horizontally arranged between the first sliding groove and the second sliding groove, the telescopic directions of piston rods of the cylinders are perpendicular to the length direction of the rack (namely the length direction of the first sliding groove), and each pair of first cylinders and each pair of second cylinders are symmetrically arranged on two sides of the width direction of the rack. The first cylinders are symmetrically fixed on two sides of the rack, the second cylinders are arranged on two sides of the width direction of the rack through the connecting frame 20, the connecting frame can slide along the length direction of the rack (a corresponding sliding rail and a corresponding sliding block are arranged between the connecting frame and the rack, and are omitted in the drawing), and the third cylinders are fixed at the bottom of the rack and used for driving the connecting frame. The clamping blocks are provided with a plurality of clamping jaws 22.1 which are arranged in a vertically staggered manner, the clamping jaws of the two clamping blocks of each pair of first cylinders are respectively arranged in a staggered manner, and the clamping jaws of the two clamping blocks of each pair of second cylinders are also respectively arranged in a staggered manner. The clamping block of the first cylinder is used for clamping a sleeve of the pushing frame, the clamping block of the second cylinder is used for clamping a bar, the third cylinder is used for driving the second cylinder to move horizontally so that the bar is inserted into the sleeve or pulled out of the sleeve, and when a piston rod of the third cylinder extends out, the third cylinder can play a role of supporting and holding the bar (the bar is softer and easy to deform and droop; when the piston rod of the third cylinder supports the bar, the right end of the bar can be just aligned to the axis of the sleeve) so as to assist the clamping block of the second cylinder in clamping the bar.

And a material box 23 for placing the residual stub bar is arranged below the rack and the butt joint mechanism. The right end of the first sliding groove is provided with a first sensor 24, the left end of the second sliding groove is provided with a second sensor 25, a third sensor 26 is arranged above the material box, and the left end of the fixed baffle is provided with a fourth sensor 31.

The working principle of the utility model is as follows:

1. as shown in fig. 4 and 5, in an initial state, the limiting block and the pushing frame are positioned at the right end of the frame, and the right part of the pushing frame is positioned in the first sliding groove;

2. the movable baffle is opened (shown in figure 3), the piston rod of the fourth cylinder extends out, a feeding device (an existing device and omitted in the figure) puts the bar stock into the second chute (one end of the bar stock shown in figure 1 extends outside the right side of the second chute and is supported by the piston rod of the fourth cylinder), and the movable baffle is closed;

3. the piston rods of the two first cylinders and the two second cylinders extend out to respectively clamp the sleeve and the bar (as shown in figure 16), and the third cylinder is started to drive the second cylinders to approach the first cylinders to insert the bar into the sleeve; then piston rods of the first cylinder, the second cylinder and the fourth cylinder are retracted;

4. the backward motor is started to drive the limiting block to horizontally move leftwards, the balance weight drives the bar to horizontally move leftwards through the pushing frame (as shown in fig. 5), the left end of the bar penetrates through the positioning pipe and then extends into a chuck of the machine tool and is blocked by a tool rest of the machine tool, so that the pushing frame stays between the two first guide wheels (as shown in fig. 6; only the pushing block 14 is shown for the pushing frame in fig. 5-7 with clear drawing, and the rest is omitted), and the limiting block moves to the left side of the machine frame and touches the second sensor (as shown in fig. 7);

5. and the machine tool starts to process after receiving the signal of the second sensor: the clamping head clamps the bar firstly, then the cutting knife processes a screw at the left end of the bar and cuts off the screw from the bar and falls down, then the cutting knife returns to the original position and the clamping head loosens the bar;

6. after the clamping head loosens the bar, the balance weight pushes the bar to horizontally move a distance (the distance of one screw length) leftwards through the second connecting rope and the pushing frame until the left end of the bar stretches into the clamping head of the machine tool and then props against the tool rest of the machine tool, and the step 5 is returned for continuous processing;

step 5, step 6 are repeated, the finished product screw is continuously cut, molded and falls down, and the pushing frame gradually approaches to the position of the limiting block; when the fourth sensor detects that the pushing frame is pushed, the machine tool stops machining, the retreating motor is started to drive the limiting block to horizontally move rightwards to the right side of the machine frame, and the limiting block also drives the pushing frame to move rightwards and simultaneously pulls out the rest bar materials from the chuck of the machine tool and the second sliding groove;

7. when the pushing frame is pulled to the right side of the rack by the limiting block, the first sensor is touched to send a signal, the first air cylinder and the second air cylinder obtain an instruction, respective piston rods extend out to clamp the sleeve and the bar respectively, then the third air cylinder is started to drive the second air cylinder to approach the fourth air cylinder to pull out the rest bar stub bar from the sleeve, the bar (shown in figure 15) is loosened after the piston rods of the first air cylinder and the second air cylinder are retracted, and the rest bar stub bar falls into the material box;

8. and (3) sending a signal after the third sensor detects that the bar falls off, and returning to the step 2 to continue production.

Claims

1. Bar blevile of push, its characterized in that: the device comprises a rack (40), a guide mechanism arranged on the rack and used for guiding the bar stock and a pushing frame to move, a pushing frame positioned in the guide mechanism in a horizontally moving way, a forward mechanism used for driving the pushing frame to move forward, a backward mechanism used for driving the pushing frame to move backward, and a butt joint mechanism used for mounting the bar stock on the pushing frame;

the guide mechanism comprises a first sliding chute (1) and a second sliding chute (2) which are horizontally fixed on the rack, a fixed baffle (3) and a movable baffle (4) which are arranged at the notch of the second sliding chute, and an opening and closing cylinder (5) for driving the movable baffle to horizontally move;

the retreating mechanism comprises a retreating motor (6), a driving wheel (7) arranged on a rotating shaft of the retreating motor, a pulley block arranged on the rack, a first connecting rope (8) surrounding the driving wheel and the pulley block, and a limiting block (9) fixed with the first connecting rope;

the advancing mechanism comprises a rolling wheel (10) which is rotatably positioned at the left end of the rack, a counterweight (11) arranged below the rack, a second connecting rope (12) which is wound on a rolling wheel ring and connected with the pushing frame, and a third connecting rope (13) which is wound on the rolling wheel ring and connected with the counterweight;

the pushing frame comprises a pushing block (14) which is slidably positioned on the first connecting rope and fixed with the second connecting rope, a pushing plate (15) which is vertically fixed at the bottom of the pushing block, and a sleeve (17) which is fixed with the pushing plate through a pushing rod (16) and can slide along the sliding groove; the front end of the sleeve is provided with a jack for inserting a bar;

the butt joint mechanism comprises a pair of first cylinders (18) and a pair of second cylinders (19) which are sequentially arranged between the first sliding groove and the second sliding groove and are horizontally arranged, the first cylinders are symmetrically fixed on two sides of the rack, the second cylinders are symmetrically positioned on two sides of the rack in an axially sliding mode through a connecting frame (20), the third cylinders (21) are fixed at the bottom of the rack, piston rods of the third cylinders are fixed with the connecting frame, and clamping blocks (22) used for clamping bars or sleeves are arranged on the first cylinders and the second cylinders.

2. A bar stock pusher as set forth in claim 1, wherein: the clamping blocks are provided with a plurality of clamping jaws (22.1) which are staggered up and down, and the clamping jaws of the two clamping blocks which are symmetrically arranged are also staggered.

3. A bar stock pusher as set forth in claim 2, wherein: and a material box (23) for placing the residual stub bar is arranged below the rack and the butt joint mechanism.

4. A bar stock pusher as set forth in claim 3, wherein: the right end of the first sliding groove is provided with a first sensor (24), the left end of the second sliding groove is provided with a second sensor (25), the material box is provided with a third sensor (26), and the fixed baffle is provided with a fourth sensor (31).

5. A bar stock pusher as set forth in claim 4, wherein: the docking mechanism further comprises a fourth cylinder (27) located between the second cylinder and the second chute and arranged horizontally.

6. A bar stock pusher as set forth in claim 5, wherein: the pulley block comprises two first guide wheels (28) and two second guide wheels (29), the first guide wheels are rotatably positioned at two ends of the frame around a vertical axis, and the second guide wheels are arranged above the driving wheels and rotatably positioned at the side surfaces of the frame around a horizontal axis; the first connecting rope sequentially surrounds the first guide wheel, the second guide wheel and the driving wheel.

7. A bar stock pusher as set forth in claim 6, wherein: the advancing mechanism further comprises two third guide wheels (30) which are rotatably positioned on the side face of the machine frame around the horizontal axis, one end of a third connecting rope is wound on the wheel axle rim, and the other end of the third connecting rope is wound around the third guide wheels and then connected with a balance weight, so that the pushing frame for pushing the bar stock is provided with pushing force through the wheel axle and the second connecting rope wound on the wheel axle rim.