JPS59232660A - Die clamping device - Google Patents

Abstract

PURPOSE:To press and fix a die to a surface plate with a simple construction and to reduce cost by fixing a pressing piece to the bottom surface at the tip of a clamping piece and advancing and tilting the clamping piece to the part above the die. CONSTITUTION:A cam shaft 5 rotates upon rotation of a lever 7 then a push bar 6 rotates to contact the inside wall of a hole 10a and advances inward a clamping piece 10 thereby moving the piece to the part above a die 3. When the shaft 5 rotates by a required angle, the large-diameter part 5b-2 of the cam 5b begins to contact the bottom surface of the piece 10 and floats from a holding member 9. As the cam shaft rotates further, the top surface of the piece 10 contacts the top surface wall 4c of the case and the pressing piece 8 on the bottom surface at the inside end of the piece 10 positioned above the die 3 descends to press the die 3. The die 3 is thus clamped to a surface plate 1 by means of the cam 5b, case 4, piece 10 and piece 8.

Description

[Detailed Description of the Invention] Technical Field This invention relates to a mold clamping device, and more specifically, a mold placed on a surface plate is pressed from the surface by a clamp piece to place the mold on the surface plate. .

The surface plate referred to here refers to a wide range of things, such as movable/fixed plates for mounting molds in die-casting machines, platens for injection molding machines, bolsters in presses, surface plates in Jigō J↓, A holster, a workpiece (including a wide range of places to which molds 3'ii:','j, etc. in the moving area can be attached) (hereinafter, the term "surface plate" shall have this meaning).

Prior Art Conventionally, most mold clamping devices of this type operate clamp pieces at 1111 pressure to place the mold on a surface plate, and the structure of the clamping device is flexible and hydraulic. 1cii and fλ, and it is necessary to configure the clamp piece so that it does not come into contact with the mold when it is placed on the surface plate. There was a problem with 'rl et fλ:q.

Purpose of the Invention The present invention aims to solve the above-mentioned problems, and aims to simplify the structure and reduce costs by manually operating the clamp piece without using a pressure source such as hydraulic pressure. In addition to ensuring that the mold is placed in place with a moderate clamping force, the clamp piece is stored in a case that does not interfere with the mold placement part when not in use. It is an object of the present invention to provide a mold clamping device which protrudes to the upper surface and performs a suppressing operation, does not take up much space, is easy to operate, and can form a ramp.

Structure and operation of the invention In order to achieve the above object, the present invention provides a method in which flanges provided on both side walls of a multi-mouth type clamp case are fixed to a surface plate with bolts, and a camshaft is rotatably mounted inside the case. A push rod is mounted on the camshaft, and a push rod is protruding from the camshaft, and an operating lever is removably housed therein. A clamp piece is provided in the gap so as to be able to slide freely on the holding member, and a round rod-shaped suppressing piece is fixed to the lower surface of the tip of the clamp piece, and the operating lever is rotated to rotate the push rod to release the clamp piece. The present invention provides a reframp device that is characterized by having a configuration in which the mold is advanced upward from the case, the clamp piece is tilted by the cam part, and the mold is pressed and fixed to the surface plate by the pressing piece. .

EXAMPLES Hereinafter, the present invention will be explained in detail with reference to examples shown in the drawings.

In the figure, 1 is a surface plate, 2 is a mold clamp device fixed on both sides of the upper surface of the surface plate 1, and 3 is a mold placed on the surface plate 1''2 and fixed by the clamp device 2.

The mold clamping device 2 has flanges 4 (,4df) protruding from the lower side of both front and rear walls 4a, 4b of an inverted U-shaped case 4, and bolt holes 4c1 bored in the flanges 4c, 4d.
．． Insert bolts 12 and 12 into 4d l and insert them into the bolt holes 1a of surface plate 1 to fix case 4! It is fixed above the elbow. The cam shaft 5, which has a cam 5b fixed to a rod 5a, is mounted on the outer side of the case 4 (the right side in the illustrated embodiment) through shaft holes 4a drilled in the front and rear walls 4a and 4b of the case.
The cam 5b is mounted on the shaft 1.4b-1 by rotatably fitting both ends of the shaft, and the cam 5b is rotatably mounted between the front and rear walls 4a and 4b. A push rod 6 is provided protruding from the outer periphery of the small diameter portion 5b-1 of the cam 5b, and a largest large diameter portion 51)-2 is provided at a portion approximately 90 degrees apart from the attachment portion of the push rod 6.
is formed as the apex of the cam. In addition, a hole 5b-3 for attaching a lever is provided in a part opposite to the attachment position of the push rod 6, and a long operating lever 7 for rotational operation is removably protruded, and the lever 7 is attached to the lower end of the case 4. It is designed to be rotatable from the opening to the outer end opening.

In the medium heat section in the case 4, a holding member 9 for preventing the clamp piece 10 from falling is pivoted at both ends between the front and rear side walls 4a and 4b. A clamp piece 10 is slidably and tiltably housed in the gap between the holding member 9 and the two cams 5b and the upper wall 4e of the case.

The clamp piece 10 has a front and back length that is equal to the case front and rear walls 4a and 4b.
The left and right length is larger than the left and right length of the case 4, and when it is stored as shown in FIG.
'', and a gap S1 is created between the lower surface of the clamp piece 10 and the upper surface of the case upper wall 4e while the lower surface of the clamp piece 10 is slidably supported on the holding member 9. It is deck-shaped with rlJ thickness. The clamp piece 10 is provided with a hole 10a at a position closer to the outside, into which the push rod 6 is inserted and removed.

The original 10a has a diameter larger than that of the push rod 6, and has a tapered notch 10a l formed at the lower end of the outer edge to facilitate insertion of the push rod 6.

A channel-shaped notch 6a is formed on the outer surface.

In addition, a round rod-shaped push piece 8 having the same length as the clamp piece 10 is welded to the lower end surface of the clamp piece 10, while a lever 7 is rotatably attached to the outer end of the clamp piece 10. At the same time, an insertion +jJ function groove 101- is provided. The clamp piece 10 protrudes from the inner end opening of the case 4 and advances toward one side of the mold 3 by rotating the push rod 6 counterclockwise, which is 7' + 410 = 1. The large diameter portion 51)-2 comes into contact with the surface of the clamp piece 10 and presses it.
- By inserting the holding member 9 or the suppressing piece 8 and the mold 3.
Using the hit point as a fulcrum, move 11!1, and clamp piece 10
The inner end of the mold 3 is lowered, and the upper surface of the mold 3 is pressed and clamped with a pusher 18. At that time, a tapered inclined surface 4e-2 is provided on the inner surface of the case top wall 4c so that the clamp piece 10 can tilt smoothly.
The inner end portion 4e-3 of the clamp piece 10 is set so as to come into contact with the upper surface of the clamp piece 10 when the clamp piece 10 is in the storage position, and to slidably hold the clamp piece 10 between the holding member 9 and the holding member 9. ing. Furthermore, a relief groove 4 cm 1 is formed in the center of the inner end of the 4 cm 2 sloped surface of the case 10 so that an even force is applied to the bolts 12 during clamping.

Furthermore, on the inner end surfaces of the front and rear walls 4a and 4b of the case 4,
A mold 1 guide 11 is housed therein to protect the case and position the mold when inserting the mold.

In the clamp device 2, when not in use, the clamp piece 10 is housed in the case 4, as shown by the solid line in FIG. In this state, the mold 3 is placed on the surface plate 1, and at this time, the mold is positioned by the id 11. When clamping,
The operating lever 7 is inserted into the hole 5b-3 of the cam 5b, and the lever 7 is rotated upward and counterclockwise. The lever 7
At the 11th turn, the camshaft 5 rotates together, and the push rod 6 also rotates at the 11th turn. The push rod 6 is inserted into the hole 10a of the clamp piece 10, and as it rotates, it comes into contact with the inner wall of the hole 10a, and as it rotates, it moves toward L, causing the clamp piece 10 to pop inward.
The inner end of '110 is moved above the mold 3. The clamp piece 10 is initially guided by the holding member 9 and moves smoothly, or when the camshaft 5 rotates by a required angle (M'J 4.5°), the large diameter portion 51)-2 of the cam 5b is rotated. It comes into contact with the lower surface of the clamp device 10, and floats above the holding member 9 in a cam shape. When it rotates further, the upper surface of the clamp piece 10 hits the case's two-sided wall 4C, and the upper surface of the case's upper wall 4C hits the oblique i? ii Place 11 and 1 along 46~2 and gold A
Clamp piece J-(L via A '1) located above y3
．． r,: The suppressing piece 8 on the l-plane descends and presses down the mold 3. Therefore, 9. shown in FIG. [''<, cam 51], the case 4, the clamp piece 10 and the suppressing piece 8 make gold λ(!!
3 is constant ++'li (clamp point is added to l.

When releasing the clamp of the mold 3 (1. Contrary to the above, turn the lever 7 downward and clockwise. If the IE operation is deviated, first press the suppression piece 8.
is placed in the upper row, the clamp is removed, the clamp piece 10 hits the holding member 9, and then the push rod 6 or the hole 10a of the clamp piece 10 is inserted, and the clamp piece 10 is retreated by the push rod and the case 4 is removed.
It can be stored inside.

Effects As is clear from the above explanation, according to the mold clamping device according to the present invention, a single camshaft member is manually rotated by a lever, and the clamp piece housed in the case is moved from the case to the upper part of the mold. then move the clamp piece forward to '
14, the mold can be pressed with the pressing piece fixed to the lower surface of the tip of the clamp piece, and the structure is fffi L13
- Since a pressure source such as hydraulic pressure is not used as in the past, costs can be reduced. Moreover, with a one-touch operation of rotating the lever, the mold can be fixed with a pressing force comparable to that of hydraulic pressure. In addition, since the clamp piece is housed in the case, it has various advantages, such as being easier to use when placing the helmet on the surface plate, and requiring less space for the clamp device. In addition, the present invention
Without being limited to the embodiments and without departing from the gist of the invention,
It is possible.

[Brief explanation of drawings]

Figure 1 shows an embodiment of this invention.
The figure is a plan view of Fig. 1, and Fig. 3 is the plan view of Fig. 2.
:ln l:1. l, Figure 4 shows 1JJi when clamped.
6i1 diagram, 1...surface plate, 2...clamp device, 3...6n(jl), 4...case,
5-Cam axis q 5 'l)...BJmu chest. 6...tIll 8, 7...Reno<-, 8・
...Press piece, 9]...Holding member, 10...
Clamp J-1, 10d (, 12... bolt. Patent applicant: Tokai J141 Co., Ltd. 'C Civil Machinery'+; rIJ〒 Agent: Patent attorney Hyakuyama In': from i) 2-person procedural amendment (In-ii) March 12, 1980 Director of Patent Units 1, Indication of the Case 1984 Patent Application No. 1 +, 18482 No. 2
Name of the invention Mold clamping device 3 Relationship with the person making the amendment Patent applicant 4 Agent address As shown in the attached document in Honmachi Hill, 2-10 Honmachi, Higashi-ku, Osaka-shi, Osaka. Figure 1

Claims (1)

[Claims] (1) Attach flanges provided on both side walls of a side-opening clamp case to a surface plate with bolts, mount a camshaft rotatably within the case, and provide a push rod protruding from the camshaft. At the same time, the operating lever is removably attached to the holding member that is suspended in the case 1, and the clamp piece is slidably attached to the holding member in the gap 1 between the cam rope of the camshaft and the upper wall of the case. A suppressing piece is fixed to the lower surface of the tip of the clamp piece, and the operation lever is rotated to rotate the push rod to advance the clamp piece from the case to the upper part of the mold, and the cam is used to tilt the clamp piece. A mold clamping device characterized in that the mold is suppressed and fixed to a surface plate by a suppressing piece.