JPS6036899B2 - Automatic work supply and unloading device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic supply/unloading device for workpieces, and particularly to an automatic V-supply/unloading device that can simultaneously attach an unprocessed workpiece and remove a processed workpiece.

Generally, when machining workpieces continuously, it is necessary to feed and attach the unprocessed workpiece to the processing machine at a predetermined timing, and to quickly remove the processed workpiece from the processing machine and carry it out. .

In order to meet this requirement, various supply and carry-out devices have been conventionally proposed depending on various conditions such as the space of the processing machine and the shape of the workpiece.

One example is a method in which a handling machine such as that disclosed in Japanese Patent Publication No. 31348 of 1972 is used to attach and detach a workpiece. However, with such a handling machine, loading and unloading of the workpieces are performed in separate cycles, and it is difficult to operate the handling machine at high speed. Therefore, even if the machining time of the workpiece itself is shortened, a large amount of time is spent supplying and unloading the workpiece, resulting in a problem that the cycle time becomes longer. The present invention
The present invention has been developed in view of the above-mentioned problems, and provides an automatic Kamakura unloading device that can simultaneously supply and unload workpieces and accurately position the workpieces. .

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 and 2 generally show an embodiment of an automatic workpiece supply and unloading device according to the present invention, in which numeral 1 indicates the main body of a processing machine, for example, a hop machine, 2 indicates a part of a hob, and the workpiece A workpiece 4a fixed on a table 3 is processed by the hob 2.

Further, 5 is a collect provided on the work table 3, and 6 is a collect provided on the work table 3.
indicates a clamp rod, and by reciprocating the clamp rod 6, the workpiece 4a is clamped and unclamped.

Incidentally, this mechanism is publicly known. Note that a protrusion 7, which will be described later, is formed at the tip of the clamp rod 6. A workpiece 4 to be processed by the hob 2 is conveyed while rolling on a feeding means 8 shown in FIG. 2, viewed from the right in FIG. An intermittent feeding device 9 for feeding the works 4 one by one is provided at the end of the feeding means 8 (not shown in FIG. 1). This intermittent feeding device 9 consists of a pair of cylinders 0 and 11 operated by a hydraulic circuit to be described later, and a stopper 12 provided at the tip of a piston rod of each cylinder 10 and 11 (however, the stopper 12 of cylinder 11 is , which is recessed and cannot be seen in Figure 2). The workpieces 4b that have passed through the intermittent feeder 9 are individually supplied onto the worktable 3 and processed by the hob 2 by a mechanism described in detail below. When the processing is completed, the workpieces 4b are placed in the vicinity of the worktable 3. Export means 13 (see Figure 1).
). The mechanism for supplying and unloading the workpiece 4 will be described below with reference to FIGS. 1 and 2.

An actuator 14 for vertical movement is attached to the main body 1, and a piston rod 1 of this actuator 14
5 is connected to guide bars 17 and 18 by a plate 16.

An actuator 19 for horizontal movement is attached to the upper ends of these guide bars 17 and 18. In addition, in order to regulate the stroke of the actuator 14 for vertical movement, a plurality of limit switches 20 and 21 are installed on the main body 1.
Furthermore, a plurality of dogs 22 and 23 are attached to the plate 16 and the horizontal actuator 19, respectively. A guide plate 24 is fixed in the horizontal direction on the upper part of the actuator 19 for horizontal movement, and
Piston rod 25 of the actuator 19 for horizontal movement
The tip of the slide rail 28 is connected to the slide rail 28 via the bracket 26.
The rear end of the connecting plate 28a is connected to the rear end of the connecting plate 28a.

Further, an extrusion actuator 27 is attached on the connection plate 28a and the slide rail 28. The slide rail 28 is connected to the guide plate 24.
It moves back and forth along the . In addition, 29 and 30 are attached to the actuator 19 for horizontal work and are used to regulate its movement, and 31 is a slide rail 2.
8 shows the dog attached. These are omitted from FIG. 2 for clarity. By providing the actuator 14 for vertical movement and the actuator 19 for horizontal movement, the slide rail 28, which can freely slide on the guide plate 24 on the actuator 19 for horizontal movement, can move up and down with respect to the work table 3. This means that they can approach and move away from each other in the horizontal direction. A guide member 33 is attached to the slide rail 28 on the work table 3 side.

The guide section 33 has blocks having an L-shaped cross section mounted oppositely on each slide rail 28, and slides the outer periphery of the processed workpiece 4a from both sides and holds the block in cooperation with the rails 28. An unprocessed workpiece 4b pushed forward on the rail 28 by a pushing member 32, which will be described later, is received and guided. The extrusion actuator 2
The piston rod 34 of No. 7 moves forward in the direction of the guide member 33, but in order to restrict its stroke, a dog 37 is mounted on a plate 36 integrated with the joint member 35 at the tip of the piston rod 34, and a dog 37 is mounted on the extrusion actuator 2.
7 itself is provided with one-piece glue mitt switches 38, 39.

On the slide rail 28 between the guide member 33 and the extrusion actuator 27 are shown in FIGS.
The intermittent feed device 9 and the like are omitted.

), after receiving the workpiece 4b to be roughened from the loading means 8, the workpiece 4b is rotated in conjunction with the horizontal movement of the slide rail 28 by the actuator 19 for horizontal movement, and the workpiece 4b is placed on the slide rail 28. A work supporter 40 is provided to allow the workpiece to fall over. That is, a pair of bearings 41 and 42 are fixed on the slide rail 28, and a shaft 43 is attached to each of these bearings 41 and 42.
, 44 are inserted, and support the base 40a of the work supporter 40 (however, only a portion is visible in FIG. 4, but the whole is shown with a dashed line for ease of understanding) so that it can be rolled over. There is. Further, the work supporter 4 has a pressing member 3.
An engaging portion 51 that engages with the extrusion member 3 is provided.
2 and the unprocessed workpiece 4c is received from the inputting means 8. A stopper 45 is separately attached to the slide rail 28 in order to reduce the impact during the receiving. A plurality of keys 46 and 47 are attached to one shaft 44 of the work supporter 40 .

The key 47 is used to connect the shaft 44 and the work supporter 40 to interlock the movement of the shaft 44 and the work supporter 40, and the key 46 is used to connect one end of the lever member 48 to the shaft. 44. That is, in order to rotate the workpiece support 40 continuously with the movement of the slide rail 28 in the horizontal Z-horizontal direction and cause the workpiece 4b to fall onto the slide rail 28, the lever member 4 is rotated.
One end of the lever member 48 is connected to the shaft 44 by the key 46 as described above, and the other end is provided with an elongated hole 49. The hole 49 engages with a pin 50 (FIG. 1) protruding from the side surface of the actuator 19 for horizontal movement. Then, the slide rail 28 and the extrusion actuator 2 integrated therewith
7 is moved in the direction of the work table 3 by the horizontal actuator 2 19, the lever member 48 rotates the shaft 44 through the key 46, so that the lever member 48 rotates the shaft 44 integrally with the shaft 44 by the other key 47. The work supporter 40 is tipped over toward the upper surface of the slide rail 28. 2
Note that the engagement portion 51 of the work supporter 40 is connected to the extrusion portion 32.
Therefore, when the workpiece supporter 40 that has received the workpiece 4b is overturned by the lever member 48, the pressing section 32 is also overturned at the same time.

An extrusion section 32 is rotatably attached to the tip of the piston rod 34 of the extrusion actuator 27.

The position of the shaft 52 of the pushing member 32 is set so as to be concentric with the shafts 43, 44 of the work supporter 40 at the positions shown in FIGS. 1 and 4. Then, the unprocessed workpiece 4b is fed into the feeding means 8 in cooperation with the workpiece supporter 40.
When the extrusion actuator 27 is pushed forward after receiving the workpiece 4a from the lever member 48 and the engaging portion 51, the extrusion actuator 27 carries out the processed workpiece 4a with its tip 53 (see FIG. 3). At the same time as being pushed out to the means 13, the unprocessed workpiece 4b is pushed by the stepped portion 54 provided at the center and fed into the guide member 33.
To be more specific, a joint member 35 is fixed to the tip of the piston rod 34 of the press actuator 27, and the plate 36 is attached to the joint member 35, and a ball 52 is inserted into the joint member 35.

The base 32a of the push-out member 32 is engaged with this shaft 52. The extrusion part village 32 is rotated together with the work supporter 40 as described above, and is further pushed away from the work supporter 40 along the slide rail 28 by the forward movement of the extrusion actuator 27, and at this time, The processed workpiece 4a is pushed out to the carrying-out means 13 by the tip portion 53, and at the same time, the unprocessed workpiece 4b is pushed by the step portion 54 and held by the guide member 33. The extrusion member 32, work support 40, lever member 48, etc., which have been described in detail above, constitute a work operation unit 64 as a whole. FIG. 6 is a hydraulic circuit diagram for operating the device of the present invention, in which a motor 65 and a pump 56 are used to operate a tank 57.
Pressure oil is pumped from a plurality of electromagnetic valves 58 and 59 operated in a predetermined sequence by an electric circuit (not shown).
, 60, 61 and 62, respectively actuate the clamp rod 6 of the work table 3 to perform clamping and unclamping. Multiple cylinders 10 of device 9
, 11.

Incidentally, the attached limit switches are shown with the same symbols as in FIG. Next, the operation of the above embodiment will be explained. first,
Before a machining cycle is started, as shown in FIG. 1, there is a workpiece 4a that has been machined in the previous machining cycle on the work table 3, and an upright workpiece supporter 40 and extrusion member 32 are present on the worktable 3. In between, unprocessed work 4
Contains b.

Further, in this state, the height of the work receiving surface 3a of the work table 3 and the height of the upper surface of the slide rail 28 are the same. When the horizontal actuator 19 is operated by switching the solenoid valve 59 from this state, the extrusion actuator 27 and the slide rail 28 are moved along the guide plate 24 to the work table 3 via the bracket 26.
move in the direction.

At this time, the work supporter 40 and the work supporter 40
The extrusion members 32 held together by the engaging portions 51 of
By the lever member 48, the balls 43, 44 and 5 are respectively
2 in the direction of the upper surface of the slide rail 28.

Then, when the limit switch 29 is activated, the workpiece 4b located between the workpiece supporter 40 and the extrusion part village 32 will be moved between the slide rails 28, so that the outer circumference of the workpiece 4b will be It comes into contact with the slide rail 28 and falls down on the slide rail 28.

Further, as the guide member 33 at the tip of the slide rail 28 moves forward together with the slide rail 28, it reaches the position of the work table 3, so that both sides of the processed work 4a are located between the slide rail 28 and the guide member 33. Become.

FIGS. 7 and 8 show the state at this time. Next, the solenoid valve 58 is switched to operate the cylinder 63.

Through this operation, after confirming that the collet 5 that had fixed the machined workpiece 4a has unclamped the workpiece 4a, the solenoid valve 60 is switched to operate the actuator 14 for vertical movement. As a result, the horizontal actuator 19, the slide rail 28 provided thereon, and the guide member 33 on the slide rail 28 also rise, and accordingly, there is a space between the guide section 33 and the slide rail 28. The workpiece 4a that has been placed rises while remaining on the slide rail 28 and is removed from the worktable 3. When the removal of the workpiece 4a is completed, the height of the distal end of the carrying-out means 13 and the guide member 33 are the same.

Then, when the extrusion actuator 27 integrated with the slide rail 28 moved forward in the direction of the work table 3 by the sliding door of the solenoid valve 61, it fell to the same position as the work support 40 attached to the slide rail 28. The pushing member 32 separates from the work support 40 and moves to the forward limit set by the limit switch 38. At this time, the tip end 53 of the extrusion section 32 pushes out the processed workpiece 4a located at the position of the guide member 33 to the carrying-out means 13, and at the same time, the step portion 54 moves the roughened workpiece 4b to the guide member 33. let This state is shown in FIGS. 9 and 10, in which the center line 1 indicates the center of the work table 3. FIG. Next, the solenoid valve 60 is switched and the vertical movement actuator 14 is operated so that the slide rail 28 and the like are lowered.

The guide member 33 also descends accordingly. At this time, the unprocessed work 4b existing above the work table 3 is loosened into the collet 5 of the work table 3. Note that at this time, the protrusion 7 of the clamp rod 6 is in the 11th position.
As shown in the figure, the extrusion member 32 is brought into contact with the extrusion member 32, and the extrusion member 32
is highlighted. As a result, the extrusion member 32
The support state between the stepped portion 54 and the workpiece 4b is released, and although the workpiece 4b is restrained on both sides by the guide member 33, it becomes free in the front-back direction.
Next, the solenoid valve 61 is switched to operate the extrusion actuator 27, causing its piston rod 34 to retreat.

At this time, the extrusion member 32 retreats without being caught by the protrusion 7, and the wisteria 52 of the extrusion section 32 and the shafts 43, 44 of the work supporter 40 become concentric again. As a result,
The unprocessed work 4 is in the collect 5 of the work table 3.
b will be set. Next, by switching the solenoid valve 59 and operating the horizontal movement actuator 19, the slide rail 28 and the extrusion actuator 27 are activated.
is set back.

At this time, the lever member 48 moves the shaft 44 in the opposite direction from before.
Rotate. As a result, the workpiece supporter 40 and the extrusion part village 32, which had returned to the position where it engages with the workpiece supporter 40, stand upright as shown in FIG. Although not shown, the work supporter 401 is provided with another locking portion for returning the push-out member 32.
After the slide rail 28 has retreated, the solenoid valve 58 is switched to operate the cylinder 63, and the collet 5 is expanded by the clamp rod 6. As a result, the workpiece 4b is clamped. Then, the hop 2 approaches the clamped workpiece 4b and starts the required processing. During this machining, the cylinders 10 and 11 of the intermittent feeder 9 operate to move the next unprocessed workpiece 4c to the upright workpiece supporter 4.
0 and the extrusion section 32.

As described above, according to the automatic workpiece supply/unloading device according to the present invention, it is possible to carry out processed workpieces and supply unprocessed workpieces during the same cycle, so that workpiece attachment, The time required for removal can be significantly shortened, and since the workpiece is always handled in a restrained state, positioning is accurate.

[Brief explanation of drawings]

Fig. 1 is a partially sectional front view showing an embodiment of the automatic workpiece supply/unloading device according to the present invention, Fig. 2 is a side view of Fig. 1, and Fig. 3 is a partial explanation of extrusion members, etc. Figure 4 is a cross-sectional view taken along the line W-W in Figure 3, Figure 5 is a plan view of Figure 3, Figure 6 is a hydraulic circuit diagram, and Figure 7 is a case where the extrusion member falls over. A side view of the state, FIG. 8 is a plan view of FIG. 7, and FIG. 9 is a side view of the state.
10 is a plan view of FIG. 9, and FIG. 11 is a side sectional view of the pushing member in a state where it is lifted up by a protrusion. 1...Main body of the processing machine, 2...Hob,
3... Work table full, 4... Work, 5...
Collection, 6... Clamp rod, 7...
... Protrusion, 8 ... Feeding means, 9 ... Intermittent feeding device, 10, 11 ... Cylinder, 12 ...
...stopper, 13...export means, 14...
Actuator, 15... Piston rod, 19... Actuator, 24... Guide plate, 25... Piston rod, 26... Bracket, 27... Extrusion actuator, 28... ...Slide rail, 32
...Extrusion member, 33...・．． Guide Bumura, 34
... Piston rod, 34 ... Joint member, 40 ... Work support, 41, 42.
...Bearing, 43,44...Shaft, 45...
...Stopper, 48...Lever section, 49...
...Elongated hole, 50...Pin, 51...Engaging portion, 52...Shaft, 53...・・・Tip,
54...Step part, 64...Work operation unit. Figure 2 Figure 1 Figure 11 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10

Claims (1)

[Claims] 1. A vertical movement actuator attached to the processing machine main body, a horizontal movement actuator that moves horizontally with respect to the processing machine main body on the vertical movement actuator, and a horizontal movement actuator that moves horizontally with respect to the processing machine main body by the horizontal movement actuator. A slide rail that approaches and separates, a guide member that is provided on the work table side of the slide rail and receives a processed work on the work table by the approach, and pushes out an unprocessed work that is attached to the slide rail on the opposite side of the guide member. an extrusion actuator for moving the unprocessed workpiece to the position of the guide member; and an upright position for receiving the unprocessed work in conjunction with the movement of the slide rail; 1. An automatic workpiece supply and carryout device comprising: a workpiece operation unit that pushes out a processed workpiece that has been received in a guide member to a carryout chute;