KR950000177B1 - Automatic sub-mold changer - Google Patents

Abstract

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Description

Automatic particle exchange device

1 to 8 show one embodiment of the particle exchange apparatus of the present invention,

1 is a partially broken plan view,

2 is a partially broken side view seen from the right side of FIG. 1,

3 is a front view of the guide means 27 of FIG. 1 seen from the arm means 5 side,

4 is a perspective view of a particle storing means,

FIG. 5 is a perspective view showing a particle supporting state of the support spring 54 of FIG.

6 is a perspective view of a particle,

7 is a plan view of a particle storing means,

FIG. 8 is a side view showing a state in which the arm 4 is advanced in FIG.

* Explanation of symbols for main parts of the drawings

1: Automatic particle exchange device 2: Injection molding machine

3: first arm 4: second arm

5: arm means 6: particle storage means

8: Chuck 9a: Movable Side Mold

9b: fixed side mold 52: housing part (shelf part)

52d: oil euro 53: particles

55: identification information (bar code)

[Industrial use]

The present invention relates to an automatic particle exchange device.

[Prior art]

Usually, in order to take a large number of metal mold | die of an injection molding machine, a some cavity is provided in PL surface of a metal tongue.

However, if a cavity is formed in the mold itself, when preparing a plurality of types of molds, each mold must be made, which is expensive. Therefore, when a plurality of types of molds are required, a plurality of types of particles having a cavity are prepared. If one type is selected from among a plurality of types of particles and the particles are inserted into a common mold, if necessary, the whole mold is suspended by a crane or the like and removed from the molding machine. Thereafter, the particles in the mold were stirred.

[A challenge you're trying to solve]

Therefore, it was very dangerous because the whole heavy mold was removed.

In addition, it takes a long time to replace the mold and requires a human hand, which is a problem in the automation of the injection molding process.

Therefore, an object of the present invention is an injection molding machine equipped with a pair of molds capable of freely attaching and detaching particles, so that the exchange of particles can be performed safely in a short time and without requiring a human hand, and thus injection To provide a particle species exchange device that can automate the molding process

[Means for solving the problem]

In order to achieve the above object, the automatic particle exchange device of the present invention is provided corresponding to an injection molding machine equipped with a pair of molds having particles free to attach and detach when the mold is in an open state, and capable of accommodating a plurality of particles. It has a particle storage means and a chuck | zipper part which affixes and removes a particle | grain is at the front-end | tip, and arm means which can move freely between the two molds in which the mold was opened, and the accommodating part of a particle storage means.

It is preferable that the said arm means consists of the 1st arm for movable side molds, and the 2nd arm for fixed side molds. Moreover, it is preferable that the identification information which shows the kind is provided in the particle | grain, and the reading means of identification information is provided in the accommodating part or chuck | zipper part.

Identification information can be bar code.

It is preferable that the accommodating part is provided with heating means capable of heating the particles in the accommodating state.

[Action]

With the pair of molds open, the chuck provided at the distal end of the arm means enters between the molds to grab the particles, and then the arm means moves to move the chucks to the housing of the particle storage means to collect the particles. It is stored in the delivery section, and then, the other particles stored in the storage section are caught by the chuck and transported between the molds by the arm means and attached to the molds.

By providing the arm means with the first arm for the movable mold and the second arm for the fixed mold, the movable side mold particles and the fixed side mold particles can be caught by different arms, so that even when the width between the molds is narrow, The arm which catches the particle | grains of one metal mold | die is pulled out between metal molds, and the other arm can be inserted between metal molds.

In addition, identification information is provided on the particles, and the type of the particles to be exchanged next can be sensed to prevent the mistake. If a heating means is provided in the housing section, the particles can be heated while the particles are stored in the housing section, so that the injection molding operation can be performed immediately without requiring the heating work time of the particles after being attached to the mold.

EXAMPLE

EMBODIMENT OF THE INVENTION Hereinafter, one Example of this invention is described in detail based on drawing.

The automatic particle exchange device 1 is provided in close proximity to the injection molding machine 2, and is capable of moving and rotating in the left and right directions (hereinafter referred to as x direction) and up and down direction (hereinafter referred to as y direction) in FIG. An arm means (5) having a first arm (3) and a second arm (4), a particle storage means (6) and a guiding means (7) moveable in the x- and y-directions; The particles attached to the movable side mold 9a and the fixed side mold 9b of the injection molding machine 2 are adsorbed by the chucks 8 attached to the distal end portions 3 and 2 of the second arm 4, respectively. It is transported to the storage means 6 for storage, and the other particles stored in the particle storage means 6 are adsorbed and transported to 9a and 9b for attachment. And the guide means 7 supports only these arms 3 and 4 since only one side is supported when the arms 3 and 4 extend to the front.

The movable side mold 9a and the fixed side mold 9b are provided with particle insertion recesses (not shown) at right angles to the PL plane so that four particles can be inserted therein, and fix the particles inserted into the particle insertion recesses. In order to do this, a key (not shown) to which particles are suspended is inserted into a key groove provided parallel to the PL surface of the movable side mold 9a and the fixed side mold 9b.

The arm means 5 will be described next.

2, the arm means 5 is arranged on the rotary table 11, the rotary table 11 is rotatably axially supported on the fixed table 13 fixed to the fixed bed 12, The rotary actuator 14 is fixed to the fixed table 13 so as to be rotated through the coupling 15. The stationary table 13 extends to the left in FIG. 1, and the particle storage means 6 is arranged at the left side.

On the rotary table 11, a pair of rails 17 extending in the x direction in FIG. 1 are attached, and a pair of guides 19 are fixed to the lower surface of one arm support table 16. 17 and the guide 19 are fitted through the slide bearing 18, so that the arm support table 16 is movable along the rail 17 in the x direction of FIG. Next, on the rotary table 11, a pair of struts 21 are erected at the left and right positions in FIG. 1, and a cylinder 22 is provided between the upper ends of the struts 21. As shown in FIG. Then, the guide plate 23 sandwiched between the two arms 3 and 4 is fixed to the slider 25 via the connecting member 24, and the cylinder 22 is a rodless cylinder for driving the slider 25. Consists of. That is, the inside of the cylinder 22 is hollow in the axial direction, part of the slider 25 enters into this cavity, and air is supplied to a part of the slider 25 contained in the cavity from the highway. The slider 25 is able to slide along the cylinder 22 by the method of blowing. By this rodless cylinder 22, the guide plate 23 is driven in the x direction in FIG. 1, so that the arms 3 and 4 sandwiching it move accordingly. As will be described later, the arms 3 and 4 are relatively immovable in the x direction with respect to the arm support tail 16, so that the arm support table 16 is driven by the rodless cylinder 22 to drive the rails 17. It is possible to drive along. And the guide plate 23 is pinched by the arms 3 and 4 via the protection plate 41 mentioned later, and it is so as not to damage the arms 3 and 4.

On the arm support table 16, a pair of cylinders 26 extending in the y-direction in Fig. 1 are fixed, and sliders 27 fixed to the arms 3 and 4 are fitted to the cylinders. The cylinder 26 is a rodless cylinder which drives the slider 27 similarly to the above. T-shaped holders 28 in the vertical section in the x-direction are fixed to the lower portion of FIG. 1 of the rotary table 11, and guides 31 are provided on both sides of the upper plate on the holders 28. FIG. Attached. The guide 31 is fitted with the rails 3a and 4a provided on the upper sides of the arms 3 and 4 freely with a sliding motion. In this way, the arms 3 and 4 are guided to the guide 31 and are movable in the y direction in FIG. 1 by the driving force of the rodless cylinder 26.

Arms 3 and 4 are provided with four chucks 8 on the outside of the tip portion, respectively. Each chuck 8 is provided with a pair of air inlets 8a up and down as shown in FIG. 2, and the air inlets 8a are connected by pipes (not shown), and a vacuum pump (not shown). ) Therefore, by operating the vacuum pump, the air is sucked in from the air intake port 8a and the particles abutting against the chuck 8 are attracted by this suction force. Each chuck 8 is provided with a pair of positioning pins 8b in the symmetrical corner portion.

Next, the guide means 7 will be described.

The bed 32 is fixed integrally to the injection molding machine 2 (FIG. 2), and the cylinder 33 and the rail 34 are attached on the bed 32 along the opening / closing direction of the mold. See also 1). 2 and 3, the slider 38 and the guide 39 are fixed to the C-shaped guide member 35 through the connecting members 36 and 37, and the slider 38 and The guide 39 is fitted with the cylinder 33 and the rail 34. The cylinder 33 is a rodless cylinder for driving the slider 38, and thus the guide member 35 is moved along the rail 34 in the direction in which the mold is opened and closed by the driving force of the rodless cylinder 33. . Guide grooves 35a and 35b are formed on the upper and lower inner surfaces of the guide member 35, and either of the arms 3 and 4 is inserted into the grooves 35a and 35b, and the arm 3 or 4) to support. In addition, protective plates 41 are provided on upper and lower ends of both sides of the plates of the arms 3 and 4, and the arms 3 and 4 are supported by the guide plates 35a and 35b through the protective plates 41. (See FIG. 8).

Next, the particle storing means 6 will be described.

The particle storing means 6 is arranged on the left side of the fixed table 13 of FIG. 1 as described above, and the line connecting the rotary shaft of the rotary table 11 and the molds 9a, 9b and the rotary table 11 The line connecting the rotating shaft and the particle storage means 6 is approximately 90 degrees in this embodiment. The cylinder 42 and the rail 43 are fixed to the left side of the fixed table 13 in the x direction, and a slider 45 and a guide (not shown) to be fitted thereto are fixed to the lower side of the x table 44. The cylinder 42 is a rodless cylinder for driving the slider 45, and the x table 44 is movable in the x direction along the rail 43 by the driving force of the rodless cylinder 42. have. Next, the rodless cylinder 46 and the rail 47 are fixed to the top of the x table 44 in the y direction, and the slider 49 and the guide (not shown) to be fitted to the bottom of the y table 48 are shown below. ) Is fixed, and the y table 48 is movable in the y direction along the rail 47.

On the table 48, as shown in FIG. 4, the strut 51 is erected in four corners, and three stage shelf boards 52 extend over each pearl bar in the lengthwise direction, and the shelf board 52 ) And the shelf plate 52 is a top and bottom two rows of particle storage unit. In addition, four particles are accommodated in each row. As shown in Figs. 5 and 6, the particle 53 has a flange portion 53b formed on the front surface of the main body portion 53a, and a positioning hole 53c in a diagonal corner portion of the flange portion 53b. This pair is provided, and accordingly, the shelf board 52 is provided with the end part 52a which accommodates the flange part 53b, and the positioning pin 52b is provided in the end part 52a. In addition, the support spring 54 is attached to the shelf plate 52 at a position between the particles so that the particles 53 do not fall down from the shelf plate 52. The support spring 54 supports the main body portion 53a of the particles 53 to the ends of the pair of support springs 54 even though the support spring 54 is formed by bending the leaf spring as in the fifth diagram. In addition, in order to support the particle | grains of the both ends of the shelf board by the support | pillar 51, the support spring 54 is not provided in this part.

In addition, as shown in FIG. 6, the bar cord 55 is attached to the bottom surface of the particle 53, and the position of the bar cord 55 when the particle 53 is accommodated between the shelf plates 52 is shown. The window 52c is provided in the part to which the bar code reading device is built. Thereby, the kind of particle is detected by reading a bar code.

As shown in FIG. Each shelf plate 52 is provided with an oil flow passage 52d for circulating the entire interior, a tube 56 is attached to the inlet side outlet of the oil flow passage 52D, and the tube 56 has a top and bottom 3 sides. It is connected to the oil heater which is not shown in figure through connection of the shelf board 52 of a stage. The shelf board 52 is heated by circulating the heated oil in the oil passage 52d.

Next, the operation will be described.

Assume that production by one type of particle is completed and production by another type of particle is performed. Then, in order to remove the particles of the fixed side mold 9b, for example, by the instruction of the CPU of the particle automatic exchange device 1, the guide of the arm support table 16 and the guide means 7 in FIG. The member 35 moves in the x direction and stops at a predetermined position. Then, the second arm 4 on the right side moves forward to slide the inside of the guide grooves 35a and 35b of the guide member 35 so that the chuck 8 has a fixed side mold 9b between the molds 9a and 9b. It stops by reaching the position facing the particle (Fig. 8). The arm support table 16 and the guide member 35 move together to the right, and the positioning pins 8b of the chuck 8 are fitted to the positioning holes 53c of the particles to stop. Next, with the air cylinder (not shown), the key is removed from the key groove and the vacuum pump is operated to adsorb four particles to each chuck 8, and then the arm support table 16 and the guide member ( 35) move to the left in conjunction with each other to remove the particles from the particle insertion recess, and the arm 4 retreats. Next, in order to remove the particles of the moving side mold 9a, the fourth arm 3 is supported by the guide member 35 in the same manner as described above, and moves forward, and then moves to the left and moves in the same manner as described above. Four particles of the side mold 9a are adsorbed and retracted.

Next, the rotary actuator 14 is operated so that the rotary table 11 rotates 90 degrees outward in the clockwise direction of FIG. 1, and the arms 3 and 4 face the x direction. Next, the arms 3, 4 advance, the chuck 8 reaches a position opposite to the position of the left two rows, for example, the space of the storage portion, and the movement in the x direction stops, and then the arm support table (16) moves upward, for example, in the y-direction, and the positioning holes 53c and the positioning pins 52b are fitted so that the particles are stored in the respective storage spaces at the right positions, and the support springs 54 are supported. Both ends thereof are supported to release air suction. Then, the arm support table 16 moves downward in the y direction, and similarly stores the particles of the arm 4 in the respective storage spaces.

Then, the arm support table 16 retreats a little, and the arms 3 and 4 move to the right in the x direction, and stop at the position of the right two rows in which the particles to be mounted next are accommodated. 16 moves downward in the y direction to fit the positioning pins 8b of the chuck 8 and the positioning holes 53c of the new particles to adsorb the particles to the chuck 8 by air suction. At this time, since the bar code 55 is attached to the particles, it is confirmed that the bar code is read in advance by the bar code reading means by the CPU command, and the next particle is attached. To adsorb. Next, the arm support table 16 is pulled upwards to adsorb particles to the chuck 8 of the arm 3, and when the particles are adsorbed to both arms, the arm support table 16 retreats slightly. The arms 3 and 4 retreat to the right in the x direction, and the rotary table 11 rotates 90 degrees counterclockwise. This time, the particles of the arms 3 and 4 are operated in the reverse order to when the particles are taken out. Attached to the mold 9a and the stationary side mold 9b, the arms 3 and 4 are retracted, thereby completing the exchange of particles.

Since the particles are preheated by heat transfer by heating of the shelf plate 52, it is possible to proceed with the injection process at the same time as the replacement of the particles is completed.

Since the present invention only exchanges particles, it is not necessary to use a member of high strength, such as when supporting the entire mold on the arms (3, 4) supporting the particles, so that the exchange device can be made compact and self-made. Can improve. In addition, since the first and second arms 3 and 4 have the same number of particles in the molds 9a and 9b at the distal end, and the chucks in the same arrangement are provided, the molds of the arms 3 and 4 are provided. The particles can all be attached and detached at the same time by a single contact separation into the particles, thereby making it possible to shorten the particle exchange time.

In the description of the operation of the above embodiment, the x table 44 and the y table 48 of the particle storing means are not moved, but after rotating the arms 3 and 4 clockwise by 90 degrees, the x table 48 is moved. The chuck 8 may be brought close to the housing, and after the arms 3 and 4 are rotated 90 degrees clockwise, the x table 44 and the y table 48 and the arms 3 and 4 are rotated. The chuck 8 may be moved closer to the housing part by moving both of them.

In the above embodiment, the guide apparatus 7 is fixed to the injection molding machine 2 side, but may be fixed to the fixing table 13 or the like.

In the above embodiment, the particles are held by the chuck by air suction, but the means for supporting the particles may be various means such as mecha chuck, oil rock, magnet, and the like.

In the above embodiment, the heated oil is circulated to the shelf plate 52 as a heating means, but the nichrome wire may be embedded in the shelf plate 52 and heated by flowing a current therein, and various other methods. This is possible.

Further, in the above embodiment, the bar code reading means is provided in the housing, but this may be provided in the chuck 8 so that the chuck 8 reads when the chuck 8 approaches the particles. The place where the bar cord is to be installed is not limited to this embodiment, and can be installed at various positions such as the flange portion or the rear surface of the particle. In this case, the bar code reading means is provided in the particle storage means so as to face the bar code, or is attached as another member. In addition, although the bar code is used as the identification information of the particles, different marks may be attached to different kinds of particles, for example, to be read by a photosensor or the like, and the identification information and the reading means may be various.

In addition, in the above embodiment, the particles are inserted and removed at right angles to the PL surface of the mold, but the present invention is applicable to various embodiments, such as the present invention is applicable even when the particles are inserted into the PL surface of the mold in equilibrium.

[effect]

Particles were automatically taken out of the mold by the automatic particle exchange device and stored in the storage unit, and other types of particles in the storage unit were mounted on the mold, thereby enabling automatic operation of the injection molding machine.

In addition, since only the particles are to be exchanged, the exchanger itself can be miniaturized, and the exchange operation becomes safer.

In addition, by providing identification information in the particles and providing the reading means in the storage section or the chuck, the type of particles to be newly attached can be eliminated, and the particle exchange operation can be performed accurately. If the reading means is provided in the housing, the type of particles can be detected while the particles are stored in the housing.

In addition, by providing a heating means in the housing portion, the particles can be heated in advance, and the injection molding can be started at the same time as the particles are attached to the mold, thereby greatly reducing the loss time of the injection molding.

Claims (5)

It is provided in correspondence with an injection molding machine equipped with a pair of molds having particles freely attached and detached when the mold is in an open state, and includes a particle storage means capable of accommodating the plurality of particles, and a chuck portion freely attaching and detaching the particles. And an arm means which is movable between the molds in the mold-open state and between the receiving portion of the particle storage means. 2. The automatic particle exchange apparatus according to claim 1, wherein the arm means comprises a first arm for the movable mold and a second arm for the fixed mold. 3. The automatic particle exchange apparatus according to claim 1 or 2, wherein said particles are provided with identification information indicating the type thereof, and said accommodating portion or said chuck portion is provided with a means for reading said identification information. . 4. The automatic particle exchange apparatus according to claim 3, wherein the identification information is a bar code. 5. The automatic particle exchange apparatus according to any one of claims 1 to 4, wherein said accommodating portion is provided with heating means capable of heating said particles in a stored state.