JPH0225558Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an improvement of a device for reversing molds.

[Conventional technology and its problems]

Molds For example, when aligning or cleaning molds for molding various types of plastics such as metals and plastics, or trial molds, it is necessary to separate and invert the assembled molds and place them on the same plane, or separate and invert them as required. It is essential to hold it at an angle. Conventionally, a suspension means such as a chain block has been used as this reversing means, which has caused problems in workability and safety.

As a countermeasure to this, the inventor of the present invention proposed the following:
No. 58-175804 proposed a device in which a pair of uprights were installed on both sides of the bed, lifting slides were arranged on these uprights, and an inversion table was supported between the lifting slides so that it could rotate 180 degrees.
There was a problem in that the mechanism for moving the reversing table up and down in a balanced manner became complicated and large.

[Means for solving problems]

The present invention aims to solve the above-mentioned problems and provide a mold reversing machine of this type that can perform reversing and balanced vertical movement of the reversing table with a simple and compact mechanism. , in an inversion machine equipped with a pair of left and right uprights provided on both sides of the bed, a slide that is raised and lowered along the uprights, and an inversion table placed between the slides, the slides enter the slides on both sides of the inversion table. A hollow reversing shaft is provided, a reversing drive mechanism including a gear element meshing with a gear element provided on the outer periphery of the hollow reversing shaft is provided in the slide, and a core shaft passing through the hole of the hollow reversing shaft is provided on the reversing table. The reason is that a balancing pinion is provided on both sides of this core shaft to mesh with a rack on the upright side.

〔Example〕

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

1 to 6 show an embodiment of the mold reversing machine according to the present invention, in which 1 is a bed placed on a base 2, and 3 is a pair of gates erected on both sides of the bed 1. Shape uprights 4, 4 are slides arranged on each of the uprights 3, 3, and are moved between the vertical frames 30, 30 of the uprights 3, 3 by a lifting drive mechanism 5, 5 via a guide such as a roller or a gib. It's supposed to go up and down.

In this embodiment, as the elevating drive mechanism 5, 5, a fluid pressure cylinder is attached to the horizontal frames 31, 31 of the uprights 3, 3, and a piston rod is fixed to the upper surface of the slides 4, 4, but the present invention is not limited to this. Instead, a fluid pressure cylinder may be provided on the bed side, and of course, a screw drive type or chain drive type may be used in which a female thread block is provided on the slides 4, 4 side and this is threadedly engaged with a screw shaft.

Reference numeral 6 denotes an inversion table disposed between the slides 4, 4, which includes a frame-like frame 60 having a width necessary for attaching molds, and an attachment/detachment mechanism 6 such as a T-groove.
2, and a face plate 61 having 2.

Reference numerals 7 and 7 designate hollow reversing shafts that are integrally fixed with base portions 70 on both sides of the frame-like frame of the reversing table 6, and the hollow shaft portions 71 enter through the openings 40 provided in the slides 4, 4, and are attached to the bearings. It is rotatably supported via metal or the like. And hollow shaft part 71
is rotated by a required angle, for example, 180 degrees, by a reversing drive mechanism 8 provided on the slide 4.

This reversing drive mechanism 8 is optional, but in FIGS. 3 and 4, the hollow shaft portion 71 is used as the reversing drive mechanism 8.
A pinion 80 is fixed to the slide 4 through a key or the like, and a rack 8 that engages with the pinion 80 is attached to the slide 4.
2 on the outer periphery is fitted onto the fixed piston 83. In FIG. 5, the hollow shaft portion 71
A worm wheel or bevel gear 84 is fixed to the slide 4, and a motor-driven worm or bevel gear 85 is provided to the slide 4. The reversing drive mechanism 8 does not necessarily need to be provided on both hollow reversing shafts 7,
It can be on one side.

9 is a solid core shaft, which is supported by bearings 63, 63 arranged on the reversing table 6;
The end portion penetrates the reversing table 6 and is inserted into the hole 72 of the hollow shaft portion 71 so as to be relatively rotatable, and a balancing pinion 90 is fixed to the portion protruding from the end portion of the hollow shaft portion 71 with a key or the like. There is. And the vertical frame 30 corresponding to this balancing pinion 90,
Attached to 30 are balancing racks 10, 10. Although the core shaft 9 may be divided into two parts, it is preferably a through shaft.

11 is a bolster or table placed on bed 2.

[Effect of the embodiment]

Since the present invention has the above-mentioned configuration, when the lifting mechanism 5, 5, that is, the fluid pressure cylinder in the embodiment is operated, the slides 4, 4 move up and down, and at this time, the slides 4, 4 have two sides of the reversing table 6. The hollow reversing shafts 7, 7 fixed to the reversing table 6 are inserted into the hollow reversing shafts 7, 7, so that the vertical movement of the slides 4, 4 is controlled. Accordingly, the reversing table 6 is also moved up and down. A balancing pinion 90 is fixed to the end of the core shaft 9, and this engages with balancing racks 10, 10 fixed to the uprights 3, 3.
During the vertical movement, the balancing pinions 90, 90 rotate on the balancing rack, the core shaft 9 is free to rotate relative to the hollow reversing shafts 7, 7, and in order to prevent the reversing table 6 from rotating, the reversing table 6 approaches or retreats from bed 2 while maintaining proper balance.

In addition, if the reversing drive mechanism 8 is operated separately from or together with this vertical movement, that is, if the sliding cylinder 81 is operated in the embodiments shown in FIGS. 3 and 4, the rack 82 fixed thereto can be rotates the hollow reversing shaft 7 via the pinion 80. Further, in the embodiment shown in FIG. 5, if the motor is driven to rotate the worm or bevel gear 85, the worm wheel or bevel gear 84 that meshes with the worm or bevel gear 85 is rotated.
The reversing hollow shaft 7 rotates through the . Since the hollow reversing shaft 7 is integrated with the reversing table 6 through the base 70, the reversing table 6 is reversed at a desired angle about the core shaft 9 by rotation of the hollow reversing shaft.

Therefore, by bringing the molds A and A' from elsewhere and placing them on the bed 1, the reversing table 6 is lowered while maintaining balance, and by fixing the mold A thereto, the reversing table 6 is lowered. Various necessary operations can be carried out freely by the balance raising and reversing operation, and this balancing up and down and reversing can be easily carried out using the mechanism of the sliding part.

[Effect of idea]

According to the present invention described above, a pair of left and right uprights 3, 3 provided on both sides of the bed,
Slide 4, which is raised and lowered along this upright,
4 and a reversing table 6 disposed between the slides, hollow reversing shafts 7, 7 are provided on both sides of the reversing table 6 to enter into the slide,
A reversing drive mechanism 8 equipped with a gear element that meshes with a gear element provided on the outer periphery of the hollow reversing shafts 7, 7 is provided inside the slide, and a core shaft passing through the holes of the hollow reversing shafts 7, 7 is provided on the reversing table 6. 9 is provided, and this core shaft 9
Since balancing pinions 90 that mesh with the racks 10 on the upright side are provided on both sides of the table, the reversing mechanism and the balance vertical mechanism of the reversing table can be made compact and simple in structure, and stable reversing operation can be obtained. As a result, an excellent effect can be obtained in that a reversing machine with better performance and lower cost can be obtained.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway front view showing an embodiment of the mold reversing machine according to the present invention, Fig. 2 is a side view thereof, Fig. 3 is a sectional view taken along the line of Fig. 2, and Fig. 4 is a sectional view taken along the line of Fig. 2.
The figure is a sectional view of the same, FIG. 5 is a sectional view showing another embodiment of the reversing drive mechanism of the present invention, and FIG.
It is a partially enlarged view of the figure. 1...Bed, 3, 3...Upright, 4,4
... Slide, 5 ... Lifting drive mechanism, 6 ... Reversing table, 7, 7 ... Hollow reversing shaft, 8 ... Reversing drive mechanism, 9 ... Core shaft, 10 ... Balancing rack, 8
0... Pinion, 82... Rack, 84... Worm wheel or bevel gear, 85... Worm or bevel gear, 90... Balance pinion.

Claims (1)

[Scope of utility model registration request] In an inverting machine equipped with a pair of left and right uprights provided on both sides of the bed, a slide that is raised and lowered along the uprights, and an inversion table placed between the slides, a hollow space that enters the slide on both sides of the inversion table is used. A reversing shaft is provided, a reversing drive mechanism including a gear element meshing with a gear element provided on the outer periphery of the hollow reversing shaft is provided in the slide, and a core shaft passing through the hole of the hollow reversing shaft is provided on the reversing table, This mold reversing machine is characterized by having balancing pinions that mesh with racks on the upright side on both sides of this core shaft.