JPH04109920U - Bar material supply machine - Google Patents

Abstract

(57) [Summary] [Purpose] To maintain the horizontal state of the arm 16 and prevent the bar A from rolling even when the upper part of the endless chain 15 that runs the arm 16 that horizontally supports the bar A is reversed. . [Structure] An endless chain 15 is stretched in the vertical direction, and a number of arms 16 are pivotally connected to the endless chain 15 so as to be able to rotate up and down.
Further, a cam follower 19 is attached to each arm 16, and a cam 21 that engages with the cam follower 19 is provided around the endless chain 15. The cam 21 guides and regulates the cam follower 19, and the arm 16 maintains a horizontal posture while the endless chain 15 reaches the upper reversal point from the ascending point. The bar A supported by the arm 16 moves through the upper reversal point without rolling, and then moves toward the bar feeder or the like.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to a bar supply machine that supplies bars to a bar supply machine.

0002

[Conventional technology]

A bar feeder continuously feeds long and thin bars to a processing machine such as a lathe, and During operation, the bar is rotatably supported. This bar feeder is designed to allow the processing machine to process bars continuously. is equipped with a bar supply device.

0003 A conventional bar supply machine is equipped with a mechanism as shown in FIG. As shown in this figure, an endless chain 1 is stretched in the vertical direction. Arms 2 are protruded from the ring 1 at a constant pitch. Arm 2 holds multiple bars A. It is designed to be supported horizontally. The endless chain 1 has a rising point 1a, and the upper part is reversed. It is divided into four locations: location 1b, descending location 1c, and lower reversal location 1d. In other words, at the rising point 1a, each arm 2 supports the bar material A and transports it upward, and the endless chime At the upper reversal point 1b of the lane 1, each arm 2 gradually changes the direction of conveyance of the bar material A. When the bar A is turned and becomes approximately horizontal, the bar A is discharged toward the bar feeder.

0004

[Problem that the idea aims to solve]

However, the conventional bar supply machine, as shown in FIG. As arm 2 moves to stand up at tipping point 1b, bar A falls. or roll suddenly, making a lot of noise. In addition, the position where the bar material A is discharged is limited to the horizontal lowering point of the arm 2. There is also the problem.

[0005] The present invention aims to solve such problems.

[0006]

[Means to solve the problem]

In order to solve the above problems, the present invention has developed a unidirectionally driven An endless chain and a number of arcs attached at a constant pitch to the endless chain. The endless chain has a Transport the bar while supporting it with the arms that hold it, and move it from the upper inverted point to the lower part of the endless chain. The bar is configured to be discharged from the arm at the drop-off point and supplied to a predetermined location. In the bar supply machine, the arm is vertically rotatable with respect to the endless chain. At the same time, a cam follower is provided horizontally protruding at a predetermined location. By engaging with each cam follower, the above-mentioned At least the arm of the endless chain between the rising point and the upper reversing point. It uses a configuration with a cam that restrains it in a horizontal position.

[0007]

[Effect]

When replenishing bars, an endless chain is driven and each arm runs in one direction. child This is normally an intermittent run. For example, the bars are placed horizontally, two at a time, with respect to the arms at the rising point of the endless chain. I can ride it. Each arm rises while supporting the bar.

[0008] Each arm that has reached the upper reversal point of the endless chain has its cam follower in the cam groove. By being restricted by this, it rotates around its axis and maintains a horizontal posture. Therefore, In each arm, the bars overlap one another and the upper one falls or rolls. I never get discouraged. After this, when the endless chain is at the reversal point or when it reaches the lowering point, the arm discharges the bar toward the bar feeder.

[0009]

【Example】

An embodiment of the bar supply machine according to the present invention will be explained below based on FIGS. 1 to 5. I will clarify. As shown in FIGS. 4 and 5, the bar supply machine 3 has two jack-equipped supports 4. It has a horizontal frame 6 supported vertically movably.

0010 A motor 7 is installed horizontally at the lower center of the horizontal frame 6, and the horizontal frame A shaft 9 is attached above the frame 6 via a plurality of bearings 8. stop The power of the motor 7 is shunted by the sprocket wheel 10 and the chain 11. It is transmitted to the foot 9. Furthermore, sprocket wheels 12 are fixed to both left and right ends of the shaft 9, respectively. A vertical frame 13 is fixed to both left and right ends of the horizontal frame 6, respectively. both At the bottom of the vertical frame 13 there is another sprocket wheel that pairs with the upper sprocket wheel 12. A sprocket wheel 14 is pivotally mounted. Upper and lower sprocket wheels 12 , 14 are each wound with an endless chain 15.

[0011] Therefore, two endless chains 15 are stretched in the vertical direction, and these chains are connected at the same time. It will be driven in the direction. As shown in FIGS. 1 and 2, the endless chain 15 has a constant pitch. The link plate 15a has protrusions 15b every other time, one for each protrusion 15b. Each has an arm 16.

0012 Each arm 16 includes a receiving member 16a that receives the bar material A, and a receiving member 16a that is aligned with the receiving member 16a. It has an integrated saddle-shaped support member 16b. At the support member 16b, It is pivotally connected to each projection 15b by a horizontal pin 17, and is rotatable in the vertical direction. There is. In addition, the code|symbol 16c was provided between the receiving member 16a and the supporting member 16b. It shows the stay.

[0013] Further, the receiving member 16a is provided with stoppers 16d and 16e at its front end and rear end, respectively. Eh, for example, two bars A are sandwiched between the two stoppers 16d and 16e. . Furthermore, the inner piece and the outer piece of the support member 16b are provided with first and second camfoils, respectively. Lowers 18 and 19 are provided to protrude in the horizontal direction.

[0014] Then, as in FIG. Assuming that it is divided into a descending part 1c and a lower inverted part 1d, an ascending part 1a, an upper inverted part The first cam follower 18 engages with the first cam follower 18 corresponding to the location 1b and the descending location 1c. One cam 20a, 20b, 20c is provided. In addition, the upper inversion point 1b and and a second cam that engages with the second cam follower 19 corresponding to the lower reversal point 1d. 21a and 21b are provided.

[0015] Specifically, the first and second cams 20a, 20b, 20c, 21a, and 21b are It is a surface cam and is fixed to the vertical frame 13. The grooves 22 of the first cams 20a, 20b, 20c form the endless chain 1 as shown in FIG. It extends parallel to the traveling locus 23 shown by the dashed line in 5, and the upward movement of the endless chain The chain 15 bends inadvertently at the point 1a, the upper reversal point 1b, and the lowering point 1c. It is adapted to engage with the first cam follower 18 to prevent bending. Code in figure 1 A dashed line 18a indicates the trajectory of the cam follower 18.

[0016] In this way, the first cam follower 18 is connected to the first cams 20a, 20b, 20c. As a result of being restrained, the arm 16 supporting the bar A can move upward without shaking. The Rukoto. The grooves 24 of the second cams 21a, 21b are located at the upper inverted portion, as shown in FIGS. 1 and 3. Formed so that the portion corresponding to 1b is shifted to the right from the groove 22 of the first cam 20b. and the other parts pass inside the grooves 22 of the first cams 20a, 20c. is formed. The one-dot chain line indicated by the symbol 19a in FIG. 1 indicates the cam follower 19. It shows the travel trajectory.

[0017] In this way, the second cam follower 19 is restrained by the second cams 21a and 21b. As a result, together with the above-mentioned restraint of the first cam follower 18, the bar material A is The supported arm 16 maintains a horizontal state at the upper inversion point 1b. Thus, by driving the endless chain 15, the arm 16 becomes endless as shown in FIG. Horizontal between the rising point 1a of the chain 15 and the first half of the upper reversing point 1b Maintaining the posture, move the endless chain from the second half of the upper reversal point 1b to the lowering point 1c. 15 side, and is made to stand up again at the lower reversal point 1d.

[0018] As shown in FIG. 5, a bar supply machine 25 is installed behind the bar supply device 3. and is discharged from the arm 16 at the upper reversal point 1b of the endless chain 15. A guide plate 26 that guides the bar material A to the bar material feeder 25 is attached to the left and right vertical frames. It is located in room 13. The shelf 25a for storing the bars A of the bar feeder 25 has a device for detecting the remaining amount of the bars A. A sensor 27 is provided, and a signal is emitted from the sensor 27 to the motor 7. It is now possible to The motor 7 is driven intermittently every time it receives a signal and supports the bar A. Each arm 16 is sent toward the guide plate 26 at a constant pitch. In addition, the sensor 27 may be used to detect that the shelf 25a is empty.

[0019] Note that horizontal shafts 5 are slidably inserted into the frame 6 from both ends thereof. A guide plate 28 for guiding the end face of the bar A is fixed to the end of each horizontal shaft 5. rod Insert and remove the guide plate 28 according to the length of the material, and place each one on the end face of the bar A. The purpose is to supply the bar material A smoothly in this manner. Next, the operation of the bar replenishing machine 3 will be explained.

[0020] By starting the motor 7, the endless chain 15 is driven in one direction, and the arm 16 is Run like 1. That is, at the rising point 1a of the endless chain 15 The first and second cam followers 18 and 19 correspond to the first and second cams 20a and 21a, respectively. The first cam follower 18 moves along the grooves 22 and 24, and the first cam follower 18 moves along the second cam follower. Since the arm 16 precedes the arm 19, the arm 16 runs upward while protruding horizontally. do. The worker must move the left and right arms 16 while they are rising or stopped in such a horizontal state. For example, two bars A are horizontally stretched between them.

[0021] At the upper reversal point 1b of the endless chain 15, the first cam follower 18 is It moves along the cam groove 22 of the first cam 20b. However, the cam follower in Figure 1 It is clear from the comparison between the traveling trajectory 19a of the cam follower 19 and the traveling trajectory 18a of the cam follower 18. As such, at this point, the groove 24 of the second cam 21a is the same as the groove 22 of the first cam 20b. , gradually moves away from the first cam groove 22 , approaches the first cam groove 22 , and then moves away again from the first cam groove 2 . The second cam follower 19 extends along the inside of the second cam follower 19. Gradually catch up with A18 and overtake it. Therefore, the arm 16 is on the endless chain 15 side. and maintains a horizontal state in the first half of the upper inversion point 1b.

[0022] Therefore, unlike in the past, the bars A may overlap vertically between adjacent arms 16, or The bar material does not roll incorrectly and rolls smoothly toward the bar feeder 25 as shown in Figure 5. I'll go. On the material shelf 25a of the bar feeder 25, the number of bars A stored thereon is measured. The motor 7 detects that the bar A has reached a predetermined number by emitting a signal. to stop.

[0023] At the lowering point 1c of the endless chain 15, the second cam follower 19 is connected to the first cam. Since the vehicle runs while passing the follower 18, the arm 16 is folded upward. Descend in an upright position. In this way, the arm 16 can descend while being rotated upward. Therefore, it is possible to save space between the bar supply machine 3 and the bar supply machine 25. can.

[0024] At the lower reversal point 1d of the endless chain 15, the groove 24 of the second cam 21b is endless. The chain 15 curves along the running trajectory 23, but a part of the chain is bent further inward. Therefore, the first cam follower 18 touches the second cam follower 19 at that part. overtake. Therefore, the arm 16 stands up again at this lower part reversal point 1d, and It reaches the rising point 1a and becomes horizontal.

[0025] Thereafter, the bar stock supply machine 3 repeats the same operation as above and feeds the bar stock A into the bar stock supply machine. Supply to the 25th person. In the above embodiment, it is assumed that two bars A are supplied to each arm 16. However, the number may be one or three or more.

[0026]

[Effect of the idea]

Since the present invention has the above-mentioned configuration, it is possible to reach the upper inverted point of the endless chain. Each arm can be maintained in a horizontal position, and the bar can be moved up and down in each arm. to prevent the upper item from falling or rolling violently. stomach. Therefore, it is possible to operate quietly and to replenish bars smoothly. can.

[Brief explanation of drawings]

FIG. 1 is a side view of the main parts of a bar supply machine according to the present invention.

FIG. 2 is a partially cutaway front view of the main part shown in FIG. 1;

FIG. 3 is a front view of the cam portion at the upper reversal point of the endless chain.

FIG. 4 is a schematic front view of the bar supply machine.

FIG. 5 is a right side view of the bar supply machine.

FIG. 6 is a schematic right side view of a conventional bar supply machine.

[Explanation of symbols]

1a Endless chain rising point 1b Upper part of endless chain reversed 1c Endless chain descending point 1d Bottom reversal point of endless chain 3 Bar supply machine 12 Upper sprocket wheel 14 Lower sprocket wheel 15 Endless chain 16 Arm 17 Horizontal pin 18 First cam follower 19 Second cam follower 18a Travel trajectory of the first cam follower 19a Travel trajectory of second cam follower 20a, 20b, 20c first cam 21a, 21b second cam 22 Cam groove 23 Trajectory of endless chain 24 Cam groove 25 Bar feeder 25a Material shelf 26 Guide plate 27 Sensor

Claims (1)

[Scope of utility model registration request] 1. An endless chain that is stretched in the vertical direction and driven in one direction, and a number of arms that are attached to the endless chain at a constant pitch. A bar supply machine configured to transport the bar while supporting it with an arm while reaching a reversal point, discharge the bar from the arm at the upper reversal point or lowering point of the endless chain, and replenish it at a predetermined location. In the arm, the arm is pivotally connected to the endless chain so as to be rotatable in the vertical direction, and a cam follower is provided at a predetermined location thereof to protrude horizontally, and a location where the cam follower travels is engaged with each cam follower. A bar replenishing machine characterized in that a cam is provided for restraining an arm of the endless chain in a horizontal position at least between a rising point and an upper reversing point.