JPH0545461Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is an automatic molded product take-out device that automatically takes out injection-molded products from a molding machine. The present invention relates to a rotation amount changing mechanism that changes the amount of rotation.

[Prior Art] A conventional molded product automatic ejection device has a main body frame that extends in a direction perpendicular to the axis of the injection screw above the molding section of the molding machine, and a main body frame that extends in the direction perpendicular to the axis of the injection screw with respect to the main body frame. It consists of operable front and rear cylinders, upper and lower cylinders that are attached to holders fixed to the rods of the front and rear cylinders and can be operated in the vertical direction, and chuck parts that are attached to the rods of the upper and lower cylinders and chuck the molded product. The take-out unit is provided so as to be movable back and forth between a take-out position above the molding part and a release position on the side of the molding part.

However, the above-mentioned automatic molded product removal device must have a main body frame with a rigid structure.
The problem is that the device becomes heavier, larger, and more expensive. In order to solve this drawback, an automatic molded product take-out device has been developed in which the molded product is taken out by rotating the take-out unit.

[Problems to be Solved by the Invention] This type of molded product automatic take-out device requires changing the amount of rotational movement of the take-out unit depending on the molded product take-out position and release position. As the drive mechanism for the take-out unit, a numerically controllable electric motor is connected to the shaft of the take-out unit, and the amount of movement of the chuck is adjusted according to the amount of rotation of the electric motor, but this takes a long time to turn. Additionally, there is a problem in that the control structure of the electric motor becomes complicated and the cost of the device increases. Further, when a cylinder is used as the driving member, it is necessary to use a cylinder whose stroke corresponds to the amount of rotation of the chuck portion, and there is a problem that the amount of rotation cannot be easily changed.

[Purpose of the invention] In view of the above-mentioned conventional drawbacks, the purpose of the invention is to
An object of the present invention is to provide an automatic molded product retrieval device that can easily change the amount of rotation of a chuck portion while reducing the cost, weight, and size of the device.

[Means for Solving the Problems] Therefore, the present invention provides a bearing frame that rotatably supports a rotating shaft to which a gear is attached, and a rack gear that is attached to the bearing frame and meshes with a rod on one side of the gear. a rotation cylinder provided with a rotation cylinder, a regulating shaft movably supported with respect to the bearing frame and formed with a rack gear that meshes with the other side of the gear, and a regulating shaft that is attached to each end of the regulating shaft so that its position can be changed. A detection member, a detection member attached to a bearing frame and outputting a signal for detecting a moving detection member and interrupting operation of a rotating cylinder, a mounting plate fixed to a rotating shaft, and the mounting plate. A guide rod fixed with an axis in the horizontal direction to the plate, a traveling body supported movably in the axial direction with respect to the guide rod, and a traveling body fixed on the opposite side of the rotation axis of the guide rod. a horizontal drive cylinder connected to the vehicle; a vertical drive cylinder attached to the traveling body so as to have an axis in the vertical direction;
It is characterized by comprising a chuck member that is attached to the rod of the vertical drive cylinder and holds the molded product.

[Operation of the invention] Since the invention is constructed as described above, when the rotating cylinder is operated, the rotating shaft is rotated in a predetermined direction by the gear meshing with the rack gear formed on the rod of the rotating cylinder. be moved. When the detecting member detects the detected member, which is repositionably attached to the end of the regulating shaft that moves with the rotation of the rotating shaft, the operation of the rotating cylinder is interrupted and its rotating state is detected. By holding the chuck member, the chuck member is moved to a position where the molded product can be taken out.

Next, in the above state, the upper and lower cylinders are operated to move the chuck member substantially in the vertical direction, thereby positioning the chuck member between the pair of opened molds and causing the molded product to face each other. Next, in the above state, the horizontal drive cylinder is operated to move the traveling body, thereby bringing the chuck member into contact with the molded product.

Then, by moving the chuck member in the opposite direction to the above, the molded product is removed from the mold and moved to a position where it can be released.

[Example] An example of the present invention will be described below with reference to the drawings.

Fig. 1 is a perspective view showing an automatic molded product take-out device according to the present invention, Fig. 2 is a perspective view schematically showing a driving means and a rotation amount changing member, and Fig. 3 is a longitudinal sectional view taken along the - line in Fig. 1. The main body frame 3 of the automatic molded product removal device 1 includes a cylindrical first frame portion 3a fixed to a molding machine (not shown) and the first frame portion 3.
a second frame portion 3 supported in a vertically movable manner;
A bearing frame 5 is provided above the second frame portion 3b. A rotary shaft 7 is rotatably supported by the bearing frame 5. A mounting plate 9 is fixed to one end of the rotating shaft 7. The rotating shaft 7 is mounted on the mounting plate 9.
two guide rods 11 having axes in the same direction as
are fixed in parallel, and the other shaft end of the guide rod 11 is fixed by a mounting plate 13. A holder 15 as a traveling body is supported on the guide rod 11 so as to be slidable in the axial direction, and a vertical cylinder 17 constituting a vertical means having an axis in the vertical direction orthogonal to the guide rod 11 is attached to the holder 15. ing. Further, a horizontal drive cylinder 19 constituting a traveling means fixed to the mounting plate 13 is connected to the holder 15, and as the horizontal drive cylinder 19 operates, the holder 15 moves in the axial direction of the guide rod 11. be done. A chuck mounting plate 21 constituting a part of the chuck portion is fixed to the rod of the upper and lower cylinders 17, and the chuck mounting plate 21 has a chuck 23 whose pawls open and close by operating a built-in cylinder (not shown).
are installed interchangeably. Incidentally, a shock absorbing member 25 is attached to the mounting plate 13 to buffer the shock when the holder 15 collides with the holder 15.

A gear 27 constituting a rotating member is fixed to the other shaft end of the rotating shaft 7 located within the bearing frame 5. Further, a drive cylinder 29 constituting a drive means is attached to the main body frame 3 and includes a rod having an axis in the vertical direction, and a rack gear 31 is formed on the rod. The rack gear 31 is meshed with the gear 27,
The gear 27 is rotated by the rod which moves up and down in accordance with the operation of the drive cylinder 29 by an amount of rotation corresponding to the movement stroke of the rod. On the other hand, the bearing frame 5 is provided with a support portion 33 having a through hole 33a, and a regulating bearing 35 is supported in the through hole 33a so as to be slidable in the vertical direction. A rack gear 37 is formed on the regulating shaft 35 so as to face in the axial direction.
7 is meshed with the gear 27. Proximity switches 39a and 39b as detection members are provided on the bearing frame 5 corresponding to the upper and lower surfaces of the support portion 33.
are attached to each end of the regulating shaft 35, and detected members 41a and 41b are attached to each end of the regulating shaft 35 so as to be able to come into contact with each end surface and to change their position. When the detected members 41a, 41b approach the corresponding proximity switches 39a, 39b as the regulating shaft 35 moves in the axial direction, the driving cylinders The operation of 29 is interrupted.

Next, the operation of the molded product automatic take-out device 1 configured as described above will be explained with reference to FIGS. 3 to 5.

In FIG. 3, FIG. 4 showing the operating state of the drive cylinder 29, and FIG. 5 showing the changing state of the take-out position, the drive cylinder 29 is in the non-operating state, that is, the rod of the drive cylinder 29 is moved downward, and the The regulating shaft 35 is adjusted so that the cylinder 17 is almost upright.
The mounting position of the detected member 41b with respect to the lower shaft end of is set. Further, the mounting position of the detected member 41a with respect to the upper shaft end of the regulating shaft 35 is set so that the rotation angle of the rotating shaft 7 corresponds to the height of the release position of the molded product to be taken out.

When the upper and lower cylinders 17 are operated in the state shown in FIG. 3, the chuck 23 is moved downward so as to face the molded product formed in the molding section of the injection molding machine at a required distance. When the horizontal drive cylinder 19 is operated in the above state, the chuck 2
3, after the molded product is moved forward to a chuckable position, the molded product is chucked by the operation of the air cylinder. Thereafter, when the horizontal drive cylinder 19 moves back, the chucked molded product is released from the molding section and is then moved upward as the upper and lower cylinders 17 move back.

Next, when the drive cylinder 29 is operated in the above state, the rotating shaft 7 is rotated in the counterclockwise direction shown in FIG. Ru. At this time, as shown in FIG. 4, the regulation shaft 35 is moved downward by the rack gear 37 meshing with the gear 27, and when the detected member 41a attached to the upper end of the regulation shaft 35 is brought close to the proximity switch 39a, The operation of the drive cylinder 29 is stopped based on the detection signal output from the proximity switch 39a, and the downward movement state of the regulating shaft 35 is maintained by the contact of the detected member 41a with the upper end of the support portion 33. The chuck 23 which chucked the molded product by the above operation is turned counterclockwise at a required angle depending on the height of the release position of the molded product. When the upper and lower cylinders 17 are operated after the above operation, the chuck 23 that has chucked the molded product is moved toward the release position, and then the chuck of the molded product is released at the release position. This allows the molded product to be removed to the desired release position. (Indicated by the dashed-dotted line in FIG. 5) Next, when changing the take-out position of the molded product from the position shown by the dashed-dotted line in FIG. Part 4
By appropriately changing the mounting position of 1b, the rotation angle of the rotating shaft 7 can be changed depending on the take-out position or release position.

In this embodiment, since the drive cylinder 29 and the regulation shaft 35 are connected via the gear 27, the mounting positions of the detected members 41a and 41b relative to the upper and lower ends of the regulation shaft 35 can be changed as appropriate. By doing so, it is possible to change the rotation angle of the rotating shaft 7. Thereby, the rotation angle of the rotary shaft 7 can be easily changed according to the take-out position and release position of the molded product, and the take-out work can be performed efficiently.

In the above explanation, the chuck 23 is set at a required rotation angle by interrupting the operation of the drive cylinder 29 based on the detection signal output as the detected members 41a, 41b approach the proximity switches 39a, 39b. However, without providing the proximity switches 39a, 39b, the detected member 41a,
41b, the regulating shaft 35 in the vertical direction
The rotation angle of the chuck 23 may be adjusted to a required angle by restricting the movement of the chuck 23.

[Effects of the invention] Therefore, the present invention makes it possible to provide an automatic molded product unloading device that can easily change the amount of rotation of the chuck while reducing the cost, weight, and size of the device. It is.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an automatic molded product take-out device according to the present invention, Fig. 2 is a perspective view schematically showing a driving means and a rotation amount changing member, and Fig. 3 is a longitudinal sectional view taken along the - line in Fig. 2. , FIG. 4, and FIG. 5 are explanatory diagrams showing the operation of this embodiment. In the figure, 1 is an automatic molded product removal device, 3 is a main body frame, 7 is a rotating shaft, 15 is a holder, 17 is an upper and lower cylinder, 19 is a horizontal drive cylinder, 23 is a chuck, 27 is a gear, 29 is a drive cylinder, 31 is a rack gear, 35 is a regulating shaft, and 37 is a rack gear.

Claims (1)

[Scope of Claim for Utility Model Registration] A bearing frame that rotatably supports a rotating shaft to which a gear is attached; A rotating cylinder that is attached to the bearing frame and has a rod provided with a rack gear that meshes with one side of the gear. , a regulating shaft that is movably supported with respect to the bearing frame and has a rack gear that meshes with the other side of the gear; a detected member that is repositionably attached to each end of the regulating shaft; and a bearing frame. A detection member that outputs a signal for detecting an attached and moving member to be detected and interrupting the operation of the rotating cylinder; a mounting plate fixed to a rotating shaft; and an axis extending in a horizontal direction with respect to the mounting plate. a guide rod fixed to the guide rod, a traveling body supported so as to be movable in the axial direction with respect to the guide rod, and a horizontal drive cylinder fixed on the opposite side of the guide rod to the rotation axis and connected to the traveling body. An automatic molded product retrieval device comprising: a vertical drive cylinder attached to a traveling body so as to have an axis in the vertical direction; and a chuck member attached to a rod of the vertical drive cylinder to hold a molded product. .