JP2770138B2 - Positioning device for mold change trolley - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a positioning device for a mold exchanging truck moved to a side of a mold clamping device of a molding machine.

[0002]

2. Description of the Related Art A conventional positioning device of this type is composed of a positioning member of a mold changing carriage with respect to a mold clamping device protruding from a side of a molding machine, and an L-shaped mounting member mounted on a lower portion of a fixed platen. After positioning the cart in the lateral direction by pressing the cart against the positioning member, the downward engaging member provided at the tip of the roller unit protruding from the cart is engaged with the groove of the level block. Height positioning is performed.

[0003]

In such a conventional apparatus, since the positioning member is protruding, it hinders the molding operation. In addition, since positioning is performed at two locations, a proper procedure is required. It takes time to exchange. As a means for preventing the positioning member from protruding, a positioning plate is protruded from the lower edge of the bogie, and this plate is pinned to a hole formed in the lower edge of the machine base. Has the inconvenience of requiring two steps. SUMMARY OF THE INVENTION The present invention has been conceived in order to solve the above-mentioned conventional problems, and has as its object the positioning member does not hinder the molding operation, and the positioning of the replacement carriage is performed in one step in one step. It is another object of the present invention to provide a positioning device having a new configuration that can be used.

[0004]

SUMMARY OF THE INVENTION According to the present invention, a pair of positioning blocks at the same position mounted on a lower part of a side surface of a fixed plate and a movable plate on a machine base, and laterally from an upper end of a truck for mold replacement. A lower end of the positioning block is formed in an L-shape so that the lower end of the positioning block protrudes outward in an L-shape to be positioned below the side plate of the roller unit. With an upward stopper
The engaging plate is formed in an engaging groove inside the stopper that fits therein, and the upper portion of the stopper on the fixed platen side is formed in a V-shaped recess, while the lower side of the side plate facing the recess is formed in a V-shaped or spherical shape. It is formed.

[0005]

[Operation] In the above configuration, the bogie is stopped at a position where both side plates of the roller unit face the positioning block, and after the positioning of the engaging plate at the tip and the engaging groove is performed, the bogie is moved to the set height. When it is lowered, the engagement plates at the tips fit into the engagement grooves of both positioning blocks. Also, the lower side of the side plate located on the fixed board side is fitted with the recess of the stopper. At this time, since both sides of the recess are formed in a V-shape, if the position of the lower side is shifted laterally, the lower side is pushed laterally by the inclined surface of the recess as it descends and reaches the fitting position. You will be guided. The lateral force due to the inclined surface is also transmitted to the bogie, so that the level of the bogie and the lateral positioning are simultaneously performed.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the drawings, reference numeral 1 denotes a mold clamping device, which comprises a fixed platen 3 installed on a machine base 2 and a movable platen 5 which is inserted into and supported by a tie bar 4 so as to be able to advance and retreat with respect to the fixed platen 3. Prepare. Positioning blocks 6 and 7 are attached to the lower part of the working side of the fixed board 3 and the movable board 5 at the same position.

Reference numeral 8 denotes a mold exchanging cart, which has a roller seat 9 on which the mold is placed on the upper surface, and two side plates 10 at the end thereof.
11 is provided with a roller unit 12 protruding laterally from the upper end of the carriage 8, and the lower side of the distal end of the both side plates 10, 11 is cut off obliquely, and the engaging plate 13 projects downward at the distal end so as to project downward. It is mounted.

At the lower four corners of the carriage 8, level bolts 14 serving also as legs are detachably attached, and casters 15 are attached to a base 16 inside each of them. The base 16 is loosely fitted to the lower frame 17 so as to be freely movable up and down, and is screwed with a screw receiving member 18 on the upper part of the lower frame 17 to be connected to the base 16 for an elevating screw shaft 19 with a handle.
Is moved up and down together with the casters 15 by the rotation of.

The lifting means shown in the figure is of a manual type. However, as a heavy-weight, large-sized mold exchanging truck, a lifting apparatus using hydraulic or pneumatic driving sources is adopted, and a chain, a gear, and a cam are used. It is a device that also uses a transmission mechanism such as.

The positioning blocks 6 and 7 have lower ends formed to protrude outward in an L-shape, so that the lower ends thereof are directed upward and under the side plates 10 and 11 of the roller unit 12. Width stoppers 20 and 21 and engagement grooves 22 and 23 inside the stopper in which the lower portion of the engagement plate 13 is accommodated.
And formed. An upper portion of the stopper 20 on the fixed platen side is formed in a V-shaped recess 24, and a height adjusting screw 2 is formed on the bottom of the engaging groove 23 of the stopper 21 on the movable platen side.
5 is screwed.

The lower side of the end of the side plate 10 of the roller unit 12, that is, the lower side 26 facing the recess 24 of the stopper 20 is formed in a V-shape. This lower side 26 is a recess 24
The roller unit 1 is guided on the inclined surface when
Since 2 is guided to the set position, its shape is omitted in the figure, but may be spherical.

Reference numerals 27 and 28 denote entrance rollers protruding from the positioning blocks 6 and 7 slightly higher than the tie bar 4, 29 denotes a mold supporting roller between the side plates of the roller unit 12, and 30 denotes a guide for the guide door. Rails.

Next, the positioning of the carriage 8 with respect to the mold clamping device 1 will be described. First, with the caster 15 grounded, the level bolt 14 of the carriage 8 is replaced with a bolt suitable for the molding machine to be replaced. Next, a mold (not shown) for replacement is placed on the roller of the roller seat 9, and the carriage 8 is moved to the molding machine side. On the molding machine side, the mold is removed from the mold clamping device 1 in advance, and the movable platen 5 is advanced to form a mold space 31 so that a new mold can be received.

The seat height of the carriage 8 with the casters 15 grounded can be adjusted by adjusting the elevation of the base 16.
The level bolt 1 is positioned so that the engagement plate 13 at the tip of the roller unit 12 is located above the stoppers 20 and 21.
4 is maintained higher than the set height due to grounding. The carriage 8 is moved toward the molding machine in such a state, and the movement is performed with the roller unit 12 facing the mold clamping device.

The carriage 8 is stopped at a position where the both side plates 10 and 11 of the roller unit 12 face the positioning blocks 6 and 7, and after the positioning of the engaging plate 13 at the tip and the engaging grooves 22 and 23 is performed. , Lifting screw shaft 1 by operating the handle
The caster 15 moves up together with the base 16 by rotating 9. The level bolts 14 at the four corners are relatively lowered and come into contact with the ground.
And the upper surfaces of the entrance rollers 27 and 28 are at the same high level.

In the process of changing the height of the carriage 8, the roller unit 15 also descends together with the carriage 8, so that the engaging plate 13 at the tip is inserted into the engaging grooves 22, 23 of both the positioning blocks 6, 7. Fits. Further, the lower side 26 of the side plate 10 is fitted with the recess 24 of the stopper 20. At this time, if the position of the lower side 26 is shifted laterally within the range of the recess 24, the lower side 26 is pushed laterally by the V-shaped inclined surface of the recess 24 as it descends and is guided to the fitting position. Become so. The lateral force due to the inclined surface is also transmitted to the carriage 8 supported by the casters 15, and the lateral positioning is automatically performed.

When the roller unit 15 is inclined sideways due to a level difference between the fixed platen and the movable platen, the adjusting screw 2 provided on the positioning block 7 on the movable platen side.
5, the level can be adjusted.

[0018]

As described above, according to the present invention, a pair of positioning blocks 6 at the same position, in which the positioning device for the mold exchanging truck is attached to the lower part of the side of the fixed platen 3 and the movable platen 5 of the mold clamping device 1.
7 and a roller unit 12 having an engaging plate 13 extending downward at the ends of both side plates 10 and 11 protruding laterally from the upper end of a mold exchanging cart 8, so that the positioning block is formed in a small size. Can be stored inside the machine. For this reason, even if the positioning block is permanently provided on the working side, there is no obstacle to the molding operation.

The lower ends of the positioning blocks 6 and 7 are L
By merely projecting outwardly in the shape of an arrow, upward stoppers 20 and 21 located below the side plates 10 and 11 of the roller unit 12 and engagement grooves 22 and 23 inside the stopper in which the engagement plate 13 is accommodated. The upper part of the stopper on the fixed platen side is formed in a V-shaped recess 24, and the lower side 26 of the side plate 10 facing the recess 24 is formed in a V-shape or a spherical shape. Just by forming the roller unit 12, the position of the roller unit 12 in the horizontal direction can be adjusted, so that a slight lateral deviation adjustment other than the height level and the horizontal level can be automatically performed in one step.

Accordingly, the carriage on which the mold is placed is moved to the side of the mold clamping device, the both side plates of the roller unit are placed on the line of the positioning block, and the engaging plate at the tip is located on the engaging groove to reduce the seat height of the carriage. Positioning can be performed reliably by simply lowering the height to the set height, and since the bogie is locked to the molding machine via the roller unit by the engagement plate, the mold is being transferred from the roller unit to the mold clamping device. Even if an external force acts on the trolley, the trolley does not move away from the trolley and the mold will not be in an unstable state, so that there is an advantage that the dies can be changed more safely and more efficiently than before. .

[Brief description of the drawings]

FIG. 1 is a side view showing a half portion of a mold clamping device provided with a positioning device for a mold changing cart according to the present invention and a mold changing cart.

FIG. 2 is a sectional view taken along line AA of FIG. 3;

FIG. 3 is a partial plan view of a mold clamping device and a roller unit during positioning.

FIG. 4 is a side view showing an engagement state between a positioning block on a fixed board side and a roller unit.

FIG. 5 is a side view showing an engagement state between a positioning block on a movable platen side and a roller unit.

[Explanation of symbols]

 Reference Signs List 1 mold clamping device 2 machine base 3 fixed plate 4 tie bar 5 movable plate 6 positioning block on fixed plate side 7 positioning block on movable plate 8 cart 10 side plate 11 side plate 12 roller unit 13 engagement plate 14 level bolt 15 caster 20 fixed plate side 21 Stopper on movable platen 22 Engagement groove on fixed platen side 23 Engagement groove on movable platen side 24 Recess for positioning 25 Adjusting screw 26 Lower side of side plate

Claims (1)

(57) [Claims] 1. A pair of positioning blocks at the same position attached to lower portions of side surfaces of a fixed platen and a movable platen on a machine base, and an engagement plate at an end of both side plates protruding laterally from an upper end of a mold exchange bogie. A roller unit extending downward, and a lower end of the positioning block protruding outward in an L-shape to accommodate an upward stopper located below a side plate of the roller unit and the engagement plate. The upper side of the stopper on the fixed platen side is formed in a V-shaped recess, and the lower side of the side plate facing the recess is formed in the V-shaped recess.
A positioning device for a mold exchanging trolley, wherein the positioning device is formed in a spherical or spherical shape.