JPS629407B2 - - Google Patents

Description

[Detailed Description of the Invention] This invention can shorten the cycle for automatically taking out molded products from a molding machine, has a strong posture control force of the chuck plate, and is a compact machine that can smoothly operate in the molding section. The present invention relates to an automatic molded product take-out device that has a posture control device and can steplessly adjust the forward and backward strokes of the front and rear cylinders to accommodate various molds without manual intervention. Various labor-saving devices have been developed that automatically take out molded products from molding machines such as plastic molding machines.
The challenge was to make stroke adjustments compatible with various molds using simple operations. In other words, when automatically unloading large molded products such as vehicle darts and panels, the vertical stroke of the upper and lower cylinders reaches nearly 2000 mm, but if that stroke is achieved with a single cylinder, there is no room for installing a cylinder of the same width on the molding machine. In addition, the chuck plates attached to the upper and lower cylinders tend to wobble when the upper and lower cylinders and rods move up and down, as well as when they stop, and it takes time for the wobbling to subside, making it difficult to move on to the next operation. The transition could not be made smoothly, resulting in a delay in the automatic retrieval cycle as a whole. Also,
In particular, when automatically extracting large molded products and transporting the molded products to the next process, a posture control device with strong posture force for the chuck plate is required to control the chuck plate from the vertical direction to the horizontal direction. When a conventional cylindrical cylinder is used, the size of the cylinder increases, resulting in an increase in the size of the device itself, which has the drawback of not being able to move the chuck up and down and back and forth smoothly in the molding section. Furthermore, the automatic ejector requires adjustment of the stroke of the front and rear cylinders depending on the type of mold, but in the past, it had to be operated by a worker or
A method was used in which front and rear cylinders with different strokes were arranged in series and adjusted in stages.
This method has the disadvantage that it requires manual intervention, which lowers work efficiency, and that it is not possible to make fine adjustments in a stepless manner. This invention was invented in view of the above-mentioned circumstances, and its purpose is to shorten the cycle for automatically taking out molded products from a molding machine, and to provide a compact and compact molded product to allow smooth movement of the chuck plate in the molding section. It is an object of the present invention to provide an automatic molded product take-out device that has a strong posture control force and can smoothly adjust the strokes of the front and rear cylinders according to various molds.

The configuration of an embodiment of the present invention will be described below. In the figure, 1 is a molding machine that performs plastic molding work, and 2 is its molding section. An automatic molded product ejecting device 3 according to the present invention is mounted on the die plate of the molding machine 1. That is, the automatic take-out device 3 extends laterally and is attached with a traveling frame 5 provided with traveling rail parts 4, 4, and on the traveling frame 5, front and rear cylinders 6,
A drive unit 8 having the guide bars 7, 7 attached thereto is mounted so as to be movable in the lateral direction via a pinion rack gear (not shown) using an air motor or the like. It goes without saying that even a structure in which the drive unit 8 is moved using a cylinder without using an air motor is within the technical scope of the present invention. A longitudinal stroke adjustment device 9 is attached to the free end side of the guide bars 7, 7 to adjust the longitudinal stroke of the front and rear cylinders 6 via the guide bars 7, 7. That is, the forward/backward stroke adjustment device 9 is fitted with a support fitting 10 that horizontally suspends the free end sides of the guide bars 7, 7, respectively, and the support fitting 10 is provided with threaded adjustment rod attachment holes 11, 11.
Screw-shaped adjustment rods 12, 12 are screwed into the mounting holes 11, 11, and the mounting holes 11, 1
The adjustment rod 1 is attached so as to be movable forward and backward from the adjustment rod 1.
The same gear 1 is located at the right end of numbers 2 and 12 in the illustration.
3, 13, and an air motor or an electric motor 15 each having a gear 14 having different gears are meshed with each other through a casing 16. In addition, 17 and 17 in the figure are adjustment rods 1
It is attached to the left end of the guide bars 7, 12 as shown in the figure, contacts a part of the drive unit 8 as the front and rear cylinders 6 move back and forth, and restricts the back and forth movement of the guide bars 7, 7.
It is a contact member that adjusts the longitudinal stroke of the front and rear cylinders 6, and in this embodiment, a gear is used to apply a screwing force to the adjustment rods 12, 12, but a chain or the like is used to apply the rotational force of the electric motor 15. Even if it is a structure that transmits the
This is within the technical scope of the present invention. Further, in this embodiment, screws are used for the adjusting rods 12, 12, but other advancing and retracting structures, such as a structure in which the adjusting rods are provided with a rack gear that meshes with a pinion gear attached to an air motor, are used to move the rods forward and backward. However, it is still within the technical scope of the present invention. Next, rail portions 18, 18 having a substantially convex cross section are attached to the left end portions of the front and rear cylinders 6 and the guide bars 7, 7 on both sides of the front side thereof, and a slider to be described later is attached to the center portion of the rail portions 18, 18. A cylinder holder 20 is provided in which an elevating cylinder 19 is attached that slides on the sections 18 and 18 to move up and down, and on the front surface of the cylinder holder 20, the rail sections 18,
18, and a vertical cylinder 22 for vertically moving a chuck plate (to be described later), and its guide bars 23, 2.
A slider 24, which is integrally attached with the slider 3, is slidable on the rail portions 18, 18, and connected to the rod 19' of the elevating cylinder 19 so as to be movable up and down. At the tip of the rod 22' of the upper and lower cylinders 22 and the guide bars 23, 23, there is an attitude control device 2.
A chuck plate 27 having chucks 26 . That is, the attitude control device 25 is composed of a rotary cylinder, and a rotating shaft 30, which is integrally provided with a rotor 29 that receives fluid pressure such as air, is attached to the housing 28 of the rotary cylinder via a bearing. . The rotor 29 is in contact with the cylindrical inner peripheral surface of the housing 28, and is made of synthetic resin such as nitrile rubber to improve airtightness. The chuck plate 27 is attached to the rotary shaft 30 in a replaceable manner, and the chuck plate 27 is attached to the rotary shaft 30 in a replaceable manner.
A reversing plate 31 is attached to control the posture of the vehicle. The clamping operation of the chucks 26...26 is performed by an air cylinder or the like (not shown) attached to the rear surface of the chuck plate 27. Next, the operation and effects of this embodiment will be explained. After completing the molding operation in the molding section 2 of the plastic molding machine 1, the drive unit 8 is positioned on the molding section 2 of the traveling frame 5. Then, in order to adjust the ejection back and forth stroke according to the mold to be used, the electric motor 15 is driven to move the screw-shaped adjustment rods 12, 12 to the support fitting 1 attached to the guide bar 7...7.
0 as a reference point, and the width of contact between the ends of the adjusting rods 12, 12 and the casing of the drive unit 8 is adjusted to adjust the forward and backward strokes of the front and rear cylinders. Then, the elevating cylinder 19 provided on the cylinder holder 20 attached to the front and rear cylinders 6 and the guide bar is operated, and the rail portion 1 provided on the cylinder holder 20 is operated.
At the same time as the slider 24 that slides up and down on the guide bars 23, 23 and the chuck plate attached to the rod 22' moves downward, the vertical cylinder 22 installed inside the slider 24 is activated. 27 is moved downward. after that,
The front and rear cylinders 6 operate and the rods 6' extend, and at the same time the guide bars 7, 7 are moved back and forth.
The ends of the adjusting rods 12, 12 are brought into contact with the casing of the drive unit 8, and move the chuck plate 27 forward in response to the adjusted forward and backward strokes. Next, the chuck 26...26 attached to the chuck plate 27 is operated by an air cylinder or the like attached to the back of the chuck plate 27 to clamp the molded product and take it out from the mold. . Then, the molded product is raised by reverse operation,
Next, the drive unit 8 is moved laterally by an air motor or the like, and if necessary, the molded product is subjected to a nipper process to separate and cut into product parts and unnecessary parts during the molding cycle. A chuck plate attached to the reversing plate 31 is rotated in a positive direction or a negative direction by the swinging of a rotating shaft 30 integrated with a rotor 29 that receives fluid pressure such as air. 27, the molded product or product part is controlled in posture from the vertical direction to the horizontal direction and falls onto the shooter, etc. that transfers the molded product or product part to the next process, for example in response to the falling of the shooter that transports the molded product or product part to the next process. Then, the molded product is taken out. Then, the drive unit 8 and the like are reversely operated and returned to their original positions, and the molded products are automatically taken out from the molding section 2 one after another. As a result, in this embodiment, it is possible to finely adjust the stroke of the front and rear cylinders in a stepless manner according to various molds, and since there is less manual intervention as in the conventional method, work efficiency is improved. In addition, unnecessary operations of the front and rear cylinders can be omitted, thereby shortening the molded product automatic take-out cycle. Also, the chuck plate is a cylinder.
At the same time as the lifting cylinder attached to the holder operates, the vertical cylinder attached to the slider that slides up and down on the rail section provided on the cylinder holder operates and moves up and down. Compared to when installed,
Since it is possible to obtain approximately twice the vertical stroke within the same time and to set the width of the mounting space to be approximately one-half of the vertical stroke, it is possible to contribute to the effective use of factory equipment. Furthermore, since the upper and lower cylinders and their guide bars are integrally installed within the same casing, that is, the slider, it is possible to suppress the shaking of the chuck plate during up and down operation, which allows for a smooth transition to the next operation and improves molding. This can contribute to shortening the automatic product retrieval cycle. Furthermore, the posture control device of the chuck plate is particularly difficult to remove when removing large molded products.
A strong attitude control force is required, but since the drive structure is a swing drive, that is, a rotary cylinder, it can be made smaller compared to a conventional cylindrical cylinder, yet a powerful attitude control force can be obtained. .
This allows the chuck plate to operate smoothly within the molding section.

Now, the gist of the present invention is the structure described in the claims, and since the structure has the above-mentioned functions and effects, it is an excellent invention as an automatic molded product retrieval device that can significantly shorten the automatic molded product retrieval cycle. It is. Incidentally, the position setting in the molded product automatic take-out device of the present invention, that is, the forward and backward stroke, the up and down stroke, and the position detection of the drive unit, etc., is performed using a known limit switch or a sensor such as a phototube.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a schematic side view showing the state installed on a molding machine, FIG. 2 is a sectional view taken along line A-A in FIG. 1, and FIG. FIG. 4 is a schematic plan view of the forward/reverse stroke adjustment device, and FIG. 5 is a schematic cross-sectional view of the attitude control device. 1... Molding machine, 3... Molded product automatic take-out device, 6
...Front and rear cylinders, 7,7...Guide bar,
9... Forward and backward stroke adjustment device, 12... Adjustment rod, 20... Cylinder holder, 24... Slider, 25... Attitude control device, 30... Rotating shaft, 31... Reversing plate.

Claims (1)

[Claims] 1. On the main body frame attached to the molding machine, a drive unit is attached so as to be movable in the lateral direction, and the drive unit is provided with a front and rear cylinder that can be moved back and forth by attaching a guide bar. is connected to the drive unit via a support fitting, and has a stroke adjustment rod that can move forward and backward, and moves the stroke adjustment rod forward and backward from the support metal fitting so that the other end of the stroke adjustment rod touches a part of the drive unit. A stroke adjustment device is attached to the guide bar to regulate the forward and backward stroke of the guide bar, a cylinder holder is attached to the front and rear cylinders, and the cylinder holder is provided with an upper and lower cylinder and a guide bar for raising and lowering the slider. Automatic take-out of molded products, characterized in that a chuck plate is attached to at least the upper and lower cylinders to operate the take-out of the molded products from the molding section of the molding machine through a posture control device driven by swinging motion. Device.