CN210755675U - Bar feeding device - Google Patents
Bar feeding device Download PDFInfo
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- CN210755675U CN210755675U CN201921547017.3U CN201921547017U CN210755675U CN 210755675 U CN210755675 U CN 210755675U CN 201921547017 U CN201921547017 U CN 201921547017U CN 210755675 U CN210755675 U CN 210755675U
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- 230000007246 mechanism Effects 0.000 claims abstract description 141
- 210000001503 joint Anatomy 0.000 claims abstract description 11
- 230000005540 biological transmission Effects 0.000 claims description 27
- 238000005096 rolling process Methods 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 11
- 238000003032 molecular docking Methods 0.000 claims description 2
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- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 238000010586 diagram Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 6
- 238000012545 processing Methods 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- 238000013459 approach Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
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Abstract
The utility model relates to a production facility of wrist-watch part. The purpose provides a bar loading attachment, and the device should have degree of automation height, operation reliable, characteristics that production efficiency is high. The technical scheme is as follows: bar loading attachment, its characterized in that: the device comprises a bar pushing mechanism and a bar adding mechanism; the bar pushing mechanism comprises a rack, a guide mechanism arranged on the rack and used for guiding the bar and the 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 on the pushing frame; the guide mechanism comprises a first sliding groove and a second sliding groove which are horizontally fixed on the rack, a fixed baffle and a movable baffle which are arranged at the notch of the second sliding groove, and an opening and closing cylinder for driving the movable baffle to horizontally move.
Description
Technical Field
The utility model relates to a production facility of wrist-watch part specifically is a bar loading attachment.
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, horizontally pushing a bar 50 into a machine tool 70, and processing the end part of the bar into a screw by a cutting tool of the machine tool; after the machine tool finishes machining one screw (the machined screw falls into the material box after being cut off and separated from the bar), the rest bars need to be continuously horizontally pushed into the chuck of the machine tool for a certain distance to machine the next screw, the process is repeatedly circulated until the whole bar is shortened to a certain length, and the old bar needs to be pulled out and replaced by a new bar to continue production. In order to realize the process, a semi-automatic machine is mainly matched with manual operation at present, and a full-automatic device capable of continuously realizing bar installation, propulsion, retreating and replacement is not available, so that further research and development are needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming not enough among the above-mentioned background art, providing a bar loading attachment, the device should have degree of automation height, operation characteristics reliable, that production efficiency is high.
The technical scheme of the utility model is that:
bar loading attachment, its characterized in that: the device comprises a bar pushing mechanism and a bar adding mechanism;
the bar pushing mechanism comprises a rack, a guide mechanism arranged on the rack and used for guiding the bar and the 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 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 chute and the second sliding chute 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 manner 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 bar adding mechanism is arranged on the side face of the rack and comprises a ratchet mechanism, a plurality of belt wheel mechanisms arranged in parallel to the length direction of the rack, a transmission shaft which is rotatably positioned on the first mounting plate and transmits power between the belt wheel mechanisms and the ratchet mechanism, and a release cylinder which drives the belt wheel mechanisms to move through the ratchet mechanism and the transmission shaft;
the belt wheel mechanism comprises a first mounting plate fixed with the side surface of the rack, a driving gear fixed on the transmission shaft, two belt wheels rotatably positioned on the first mounting plate, and a conveying belt sleeved on the two belt wheels; the conveying belt is provided with single-sided teeth, and the driving gear is arranged below the conveying belt and meshed with the single-sided teeth;
the release cylinder is fixed with the rack through a second mounting plate; the ratchet mechanism comprises a ratchet fixed on the transmission shaft, a cylinder push plate, a pawl and a tension spring, wherein one end of the cylinder push plate is rotatably positioned on the transmission shaft, the other end of the cylinder push plate is pushed by the release cylinder, the pawl is rotatably positioned on the cylinder push plate and matched with the ratchet, and the tension spring applies tension to the second mounting plate and the pawl at two ends respectively.
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.
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 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.
A positioning plate for keeping the position of the bar is arranged above a right belt wheel of the belt wheel mechanism, and a guide plate for guiding the rolling position of the bar is arranged below the right belt wheel of the belt wheel mechanism; the positioning plate is in a circular arc shape which is matched with the shape of the belt wheel; the guide plates are arranged obliquely.
The axis of the belt wheel is parallel to the length direction of the frame.
The push plate of the air cylinder is provided with a sliding groove, an air cylinder push rod penetrating through the sliding groove is fixed on a piston rod of the release air cylinder, and the push rod is provided with a pair of clamping blocks used for pushing and pulling the push plate.
A baffle is also arranged between the belt wheel mechanism and the ratchet wheel mechanism; the baffle is fixed with the frame through a third mounting plate.
The utility model has the advantages that:
the utility model discloses a bar pushing equipment can realize sending into the bar action such as lathe, pull out the lathe in proper order, and rethread bar release structure realizes the automatic loading of bar, has consequently realized the serialization production of bar processing, has improved the degree of automation of device, has guaranteed the reliability of operation, has improved production efficiency and has reduced manufacturing cost.
Drawings
Fig. 1 is a front view structure diagram of a bar stock pushing mechanism.
Fig. 2 is a rear view structure diagram of the bar stock pushing mechanism.
Fig. 3 is a schematic top view of a bar pushing mechanism (also a schematic top view of the present invention).
FIG. 4 is a second schematic view of the top view of the pushing mechanism for rod material.
Fig. 5 is one of the operation states (top view structure) of the advancing mechanism and the retreating mechanism in the bar stock pusher.
FIG. 6 is a second schematic view (top view) showing the operation states of the advancing mechanism and the retreating mechanism in the bar pushing mechanism.
FIG. 7 is a third schematic view (top view) showing the operation states of the advancing mechanism and the retreating mechanism in the bar pushing mechanism.
Fig. 8 is a front view structure diagram of a pushing frame in the bar stock pushing mechanism.
FIG. 9 is a schematic top view of a pushing frame of the bar pushing mechanism.
Fig. 10 is a right-side structural diagram of a pushing frame in the bar stock pushing mechanism.
FIG. 11 is a schematic diagram of the right side view of the second guide rail of the bar pushing mechanism (the movable baffle is folded with the fixed baffle).
FIG. 12 is a second schematic diagram of the right side view of the second guide rail of the bar pusher mechanism (with the moveable stop plate separated from the fixed stop plate).
Fig. 13 is a schematic top view of the first cylinder in the bar stock pushing mechanism.
FIG. 14 is a schematic diagram of the structure of the first cylinder in the bar pushing mechanism in a right view.
FIG. 15 is a schematic diagram of a right side view of the bar pushing mechanism with the clamp blocks separated.
FIG. 16 is a right side view schematically showing the construction of the pusher for bars in the closed state of the clamp blocks.
Fig. 17 is a schematic top view of the bar adding mechanism.
FIG. 18 is a schematic top view of the band mechanism in the bar adding mechanism.
FIG. 19 is a schematic diagram showing the structure of the band mechanism in the bar adding mechanism from the right.
Fig. 20 is a front view schematically showing the structure of a baffle plate in the bar adding mechanism.
FIG. 21 is a right side view schematically showing the structure of a ratchet mechanism in the bar adding mechanism.
FIG. 22 is a schematic diagram showing the construction of a ratchet mechanism in the billet adding mechanism in a right view (the ratchet is omitted).
FIG. 23 is a schematic top view of the ratchet mechanism of the billet adding mechanism.
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.
Bar loading attachment, including bar pushing equipment and bar interpolation mechanism, its theory of operation is: the bar adding mechanism 80 loads the bar 50 (about 200-; when the bar stock is shortened to a certain length (about 20-30cm), the bar stock becomes waste, the bar stock pushing mechanism pulls out the waste, and the bar stock adding mechanism loads a new bar stock into the bar stock pusher, so that the continuous production is realized.
First, bar pushing equipment
As shown in fig. 1, the bar stock pushing mechanism includes a frame 40 (the length of the frame is 6-8 m; the length direction is the left-right direction of fig. 1), and a guiding mechanism, a pushing frame, a forward mechanism, a backward mechanism and a butt mechanism which are respectively arranged 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 rail and the second sliding rail are horizontally fixed on the rack, sliding grooves are formed in the top surfaces of the first sliding rail and the second sliding rail and are coaxially arranged, the first sliding groove and the second sliding groove are horizontally fixed on the rack, and a certain distance is kept between the first sliding groove and the second sliding groove. 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 to serve as a slide way for the push plate to move), the notch of the second chute is closed (the bar falls into the second chute), and the notch of the second chute is opened when the movable baffle and the fixed baffle are separated. Because the bar is softer, the bar is easy to deform and bend when the pushing frame pushes the bar to move in the axial direction in the second chute, and the bar can be effectively limited to deform when the movable baffle and the fixed baffle are folded.
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 grooves of the sliding rail, the push block moves horizontally above the first sliding groove and the second sliding groove (including above the fixed baffle and the movable baffle), and the push plate slides along the sliding 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 can apply 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 a clamping block 22 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.
Second, bar adding mechanism
As shown in fig. 17, the billet adding mechanism comprises a plurality of belt wheel mechanisms, a ratchet mechanism, a transmission shaft a1, a release cylinder a2 and a baffle a 16.
The release cylinder, the ratchet mechanism, the baffle plate and the belt wheel mechanism are all fixed on the side face of the rack of the bar pushing mechanism 60, the belt wheel mechanism is arranged in parallel to the length direction L (horizontal direction in figure 17) of the rack, the transmission shaft is rotatably positioned on the first mounting plate and transmits power between the belt wheel mechanism and the ratchet mechanism, and the release cylinder drives the belt wheel mechanism through the ratchet mechanism and the transmission shaft.
The release cylinder is fixed with the rack through a second mounting plate A9, a cylinder push rod A14 is fixed on a piston rod of the release cylinder, two fixture blocks A15 are fixed on the cylinder push rod, and the telescopic direction of the piston rod of the release cylinder is perpendicular to the length direction of the rack.
The ratchet mechanism comprises a ratchet wheel A10, a cylinder push plate A11, a pawl A12 and a tension spring A13. The ratchet wheel is fixed on the transmission shaft, the bottom end of the cylinder push plate is rotatably positioned (arranged in a sleeving manner) on the transmission shaft, the cylinder push plate is provided with a sliding groove A11.1 extending axially, the pawl A12 is rotatably hinged on the cylinder push plate, two ends of the tension spring 13 are respectively fixed with the second mounting plate and the pawl, and the claw tip of the pawl is pressed on the ratchet wheel and meshed with the ratchet of the ratchet wheel under the action of the tension force of the tension spring. The cylinder push rod penetrates through the sliding groove of the push plate and two clamping blocks A15 on the cylinder push rod are respectively arranged on two sides of the cylinder push plate, so that the cylinder push plate can be driven to swing when the release cylinder stretches.
The belt wheel mechanism comprises a first mounting plate A3, a driving gear A4, two belt wheels A5, a conveying belt A6, a positioning plate A7 and a guide plate A8. The first mounting plate is fixed with the rack, the two belt wheels are rotatably positioned on the first mounting plate and are arranged at the same horizontal position (one belt wheel is fixed on the transmission shaft, the other belt wheel is rotatably positioned on the fixed shaft through a bearing, and the fixed shaft and the transmission shaft are arranged on the first mounting plate in parallel). The transmission belt is sleeved on the belt wheels, single-sided teeth are arranged on the transmission belt, the tooth pitch of the single-sided teeth is larger than the outer diameter of the bar, the driving gear is arranged below the central positions of the two belt wheels and is meshed with the single-sided teeth of the transmission belt, the driving gear is fixed with the transmission shaft, a positioning plate A7 is arranged above the right belt wheel, a guide plate A8 is arranged below the right belt wheel, the positioning plate is in a circular arc shape which is suitable for the appearance of the belt wheels, the guide plate is obliquely arranged, and the positioning plate and the guide plate are both fixed with the first mounting; therefore, the bar stock cannot slide out freely when being conveyed to the end part of the conveyor belt and can only slide according to the route determined by the guide plate.
The axis of the belt wheel is parallel to the length direction of the frame. The number of the belt wheel mechanisms is determined according to needs (the bar stock is soft, a plurality of belt wheel mechanisms are needed to be arranged to simultaneously support each part of the bar stock in a segmented mode), and 2-5 belt wheel mechanisms are generally arranged (three belt wheel mechanisms are arranged in fig. 17).
The baffle is arranged between the belt wheel mechanism and the ratchet wheel mechanism, the baffle is fixed with the rack through a third mounting plate, and the cross section of the baffle is L-shaped (shown in figure 20).
The utility model discloses well bar pushing equipment's working procedure 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 side of the pushing frame is positioned in the first sliding groove;
2. when the movable baffle is opened (shown in fig. 3), the piston rod of the fourth cylinder extends out, the bar adding mechanism releases a bar, the bar falls into the second chute (one end of the bar shown in fig. 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 two first air cylinders and the two second air cylinder piston rods extend out to respectively clamp the sleeve and the bar (as shown in figure 16), the third air cylinder is started to drive the second air cylinder to approach the first air cylinder to insert the bar into the sleeve, and the piston rods of the first air cylinder, the second air cylinder and the fourth air 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 figure 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 figure 6; only the pushing block 14 is shown for the pushing frame in figures 5 to 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 figure 7);
5. and the machine tool starts to process after receiving the signal of the second sensor: the clamping head clamps the bar firstly, 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 can push 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;
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.
The utility model discloses well bar adds the working procedure of mechanism as follows:
1. a plurality of bars 50 are placed on the transmission belt in parallel, the bars need to be placed in parallel to the length direction of the rack, a single-sided tooth of the transmission belt is arranged between every two bars at intervals, and the end parts of the bars lean against the baffle to ensure that all the bars are aligned;
2. the piston rod of the release cylinder retracts to drive the cylinder push plate to swing leftwards through the cylinder push rod (an arrow F1 in fig. 21), and the cylinder push plate drives the transmission shaft to rotate anticlockwise by a certain angle through the pawl and the ratchet wheel (an arrow F2 in fig. 21);
3. the transmission shaft simultaneously drives all the driving gears to rotate at a certain angle (an arrow F3 in fig. 19) in a clockwise direction, the driving gears further drive each driving belt to rotate for a certain distance (an arrow F4 in fig. 19), the bars on the driving belts can gradually move to the positions of the positioning plates and pass through the lower parts of the positioning plates (the positioning plates can ensure that the bars on the inner cambered surfaces of the positioning plates cannot slide outwards at will), the bars fall onto the guide plates on the lower parts when rotating out of the positioning plates, and finally the bars slide into the second sliding grooves of the bar pushing mechanism along the guide plates (the fixed baffle and the movable baffle are opened);
4. when a piston rod of the release cylinder extends out, the cylinder push plate is driven to return, when the cylinder push plate swings, the pawl slides along the ratchet wheel, the transmission shaft is still, and the belt wheel mechanism does not work; when the release cylinder stretches once (the transmission shaft and the driving gear rotate once), one bar falls into the second chute of the bar pushing mechanism.
Claims (10)
1. Bar loading attachment, its characterized in that: the device comprises a bar pushing mechanism and a bar adding mechanism;
the bar pushing mechanism comprises a rack (40), a guide mechanism arranged on the rack and used for guiding the bar and the 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 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 air cylinders (18) and a pair of second air cylinders (19) which are sequentially arranged between the first sliding chute and the second sliding chute 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 manner through a connecting frame (20), a third air cylinder (21) is fixed at the bottom of the rack, a piston rod of the third air cylinder is fixed with the connecting frame, and clamping blocks (22) used for clamping bars or sleeves are arranged on the first air cylinder and the second air cylinder;
the bar adding mechanism is arranged on the side surface of the rack and comprises a ratchet mechanism, a plurality of belt wheel mechanisms arranged in parallel to the length direction of the rack, a transmission shaft (A1) which is rotatably positioned on the first mounting plate and transmits power between the belt wheel mechanisms and the ratchet mechanism, and a release cylinder (A2) which drives the belt wheel mechanisms to move through the ratchet mechanism and the transmission shaft;
the belt wheel mechanism comprises a first mounting plate (A3) fixed with the side surface of the rack, a driving gear (A4) fixed on the transmission shaft, two belt wheels (A5) rotatably positioned on the first mounting plate, and a conveying belt (A6) sleeved on the two belt wheels; the conveying belt is provided with single-sided teeth, and the driving gear is arranged below the conveying belt and meshed with the single-sided teeth;
the release cylinder is fixed with the frame through a second mounting plate (A9); the ratchet mechanism comprises a ratchet wheel (A10) fixed on the transmission shaft, an air cylinder push plate (A11) with one end rotatably positioned on the transmission shaft and the other end pushed by the release air cylinder, a pawl (A12) rotatably positioned on the air cylinder push plate and matched with the ratchet wheel, and a tension spring (A13) with two ends respectively applying tension to the second mounting plate and the pawl.
2. A bar stock feeding device according to claim 1, characterized in that: 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 feeding device according to claim 2, characterized in that: a material box (23) with residual stub bars 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), the material box is provided with a third sensor (26), and the fixed baffle is provided with a fourth sensor (31).
4. A bar stock feeding device according to claim 3, characterized in that: the docking mechanism further comprises a fourth cylinder (27) located between the second cylinder and the second chute and arranged horizontally.
5. A bar stock feeding device according to claim 4, characterized in that: 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 surrounds the first guide wheel, the second guide wheel and the driving wheel.
6. A bar stock feeding device according to claim 5, characterized in that: the advancing mechanism further comprises two third guide wheels (30) which can be 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 reel shaft ring, 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 materials is provided with pushing force through the second connecting rope wound on the reel wheel ring.
7. A bar stock feeding device according to claim 6, characterized in that: a positioning plate (A7) for keeping the position of the bar stock is arranged above a right belt wheel of the belt wheel mechanism, and a guide plate (A8) for guiding the rolling position of the bar stock is arranged below the right belt wheel; the positioning plate is in a circular arc shape which is matched with the shape of the belt wheel; the guide plates are arranged obliquely.
8. A bar stock feeding device according to claim 7, characterized in that: the axis of the belt wheel is parallel to the length direction of the frame.
9. A bar stock feeding device according to claim 8, characterized in that: the push plate of the air cylinder is provided with a sliding groove (A11.1), an air cylinder push rod (A14) penetrating through the sliding groove is fixed on a piston rod of the release air cylinder, and the push rod is provided with a pair of clamping blocks (A15) for pushing and pulling the push plate.
10. A bar stock feeding device according to claim 9, characterized in that: a baffle (A16) is also arranged between the belt wheel mechanism and the ratchet wheel mechanism; the baffle is fixed with the frame through a third mounting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921547017.3U CN210755675U (en) | 2019-09-17 | 2019-09-17 | Bar feeding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921547017.3U CN210755675U (en) | 2019-09-17 | 2019-09-17 | Bar feeding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210755675U true CN210755675U (en) | 2020-06-16 |
Family
ID=71061978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921547017.3U Withdrawn - After Issue CN210755675U (en) | 2019-09-17 | 2019-09-17 | Bar feeding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210755675U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110524068A (en) * | 2019-09-17 | 2019-12-03 | 杭州正驰达精密机械有限公司 | Bar feeding device |
| CN112372004A (en) * | 2020-09-21 | 2021-02-19 | 海宁市长锋金属配件有限公司 | Feeding device for producing navigator connecting piece |
-
2019
- 2019-09-17 CN CN201921547017.3U patent/CN210755675U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110524068A (en) * | 2019-09-17 | 2019-12-03 | 杭州正驰达精密机械有限公司 | Bar feeding device |
| CN110524068B (en) * | 2019-09-17 | 2024-02-09 | 杭州正驰达精密机械有限公司 | Bar feeding device |
| CN112372004A (en) * | 2020-09-21 | 2021-02-19 | 海宁市长锋金属配件有限公司 | Feeding device for producing navigator connecting piece |
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