KR200173881Y1 - Cramp for gripping the mold - Google Patents

Abstract

The present invention quickly and easily grasps the gripping object to quickly perform gripping object replacement work, and mold gripping to quickly and easily grasp several gripping objects having different widths with one clamp regardless of the various areas of gripping object. It relates to a paper clamp.

The present invention to achieve this object is the first and second conveying guide plate for forming a slide guide groove on the inner surface; A front spacer and a rear spacer which are installed in the front and rear sides of the first and second transfer guide plates facing each other to form a space by maintaining the first transfer guide plate and the second transfer guide plate at regular intervals; A support side plate for supporting the first and second transfer guide plates; A sprocket wheel which is installed in the conveying guide plate space and is sequentially rotated by receiving power through a drive motor and a reducer mounted on one side of the support side plate; A clamp transfer means inserted into the first and second transfer guide plate spaces and sliding forward and backward in the slide guide groove of the inner side of the transfer guide plate according to the forward / reverse rotation of the sprocket wheel; A clamping means fixed to one end of the clamp conveying means and gripping the edge of the object to be gripped while interlocking according to sliding of the clamp conveying means; A distance sensor which senses the distance of the clamping means and stops the clamping means accurately in its original position; And the like.

Description

Clamp for gripping the mold}

The present invention relates to a clamp for clamping a mold used in a machine tool such as a press machine, an injection machine, a forging machine, a die casting machine, and in particular, a gripper object is quickly and easily held on the side of the upper fixing frame of the machine tool to quickly change the work of the gripper. The present invention relates to a clamp for holding a mold, which makes it possible to clamp the holding object more stably and firmly.

Generally, a machine tool such as a press, an injection machine, a forging machine, and a die casting machine is used to mold a plastic by molding the material (hereinafter referred to as a 'grip object'). A plurality of guide rods each having a thread formed on the outer circumferential surface thereof is fixed by using a fixing means such as welding, and the guide rods are inserted into the guide rods using the through holes provided on the outside of the gripping object. The gripping object is clamped by tightening the nut.

As described above, the clamping means (guide rods and nuts) are used to fix the gripping object to the machine tool. However, since the clamping method is performed by hand, the work takes a lot of time and the clamping force applied to the workpiece is not constant. Because it causes deformation to the workpiece, it is difficult for precision machining to be made, and it is troublesome to tighten and loosen the nut from the guide rod, which is a clamping means, whenever the coupling object is frequently joined or separated, and heavy gripping object falls when the nut tightening force drops. The risk of causing an accident cannot be excluded.

In addition, there is a problem in that the guide rod, which is a clamping means, is welded so as not to move at a predetermined position in the upper fixing frame, so that the gripping objects except for the gripping objects manufactured to the set width cannot be gripped.

Therefore, the present invention has been devised to efficiently solve the conventional problems, the object of which is to quickly and easily gripping in terms of the gripping object after fixing a plurality of clamps in place in the upper fixing frame of the machine tool, the gripping object It also responds quickly to frequent replacements, thus reducing labor and providing stable and firm grip force to prevent accidents and achieve precision processing.

Another object of the present invention is to quickly and easily clamp a plurality of gripping objects having different widths as one clamp irrespective of the various widths of the objects to be gripped.

1 is a perspective view for explaining the present invention.

Figure 2 is an exemplary side view of the present invention.

Figure 3 is a side cross-sectional view of the present invention.

Figure 4 is a perspective view of the transfer guide plate of the present invention.

5 is a cross-sectional view illustrating a line A-A 'of the present invention.

Figure 6 is an enlarged view of the excerpts of FIG.

7 is an enlarged cross-sectional view taken along line B-B 'of the present invention.

8 is an exploded perspective view of the roller chain of the present invention.

9 is a view illustrating the operation of the clamp conveying means of the present invention.

10 is an operation state of the clamping means of the present invention.

<Code Description of Main Parts of Drawing>

100-1st transfer guide plate, 101,111-slide guide groove,

120-front spacer, 130-rear spacer,

150,160-support side plate, 152-drive motor,

200-clamp conveyance, 210-roller chain,

211-Link Plate, 212-Side Rolling Roller,

213-sprocket wheel bit rollers, 220-tube hanger,

221-Holder, 223-Breakaway shaft,

224-bushing roller, 225-oil tube

300-clamping means, 301-body,

302-pressure plate, 400-distance sensor

Clamp for holding a mold according to the present invention for achieving the above object, the first and second transfer guide plate for forming a slide guide groove on the inner side to communicate in a perpendicular direction from the upper side to the front side; A front spacer and a rear spacer which are installed in the front and rear sides of the first and second transfer guide plates facing each other to form a space by maintaining the first transfer guide plate and the second transfer guide plate at regular intervals; A support side plate supporting and fixing the first and second transfer guide plates; A sprocket wheel installed in the inner space of the conveying guide plate and rotating to receive power sequentially through a driving motor and a reducer mounted on one side of the support side plate; A clamp transfer means inserted into the inner space of the first and second transfer guide plates and sliding forward and backward in the slide guide groove of the inner side of the transfer guide plate according to the forward / reverse rotation of the sprocket wheel; A clamping means fixed to one end of the clamp conveying means and gripping the edge of the object to be gripped while interlocking according to sliding of the clamp conveying means; When the clamping means is transported to hold the clamping means spaced at a certain distance, the clamping means is sensed by controlling the clamping means to stop at the clamping position, or by detecting the distance of the clamping means returning to the original position according to the unclamping signal. It characterized in that it comprises a distance sensor to stop exactly at.

The present invention further includes another feature in which a long hole penetrates the front front surface of the front spacer and a portion of the upper end protrudes above the first and second transfer guide plates.

The present invention also provides a gear part of the sprocket wheel that rotates forward and reverse in the clamp transfer means. And a roller hanger which meshes with the slide guide grooves of the first and second conveying guide plates and slides along the slide guide grooves, and which is installed to be rotated to one side of the roller chain to support an oil tube for supplying hydraulic oil to the clamping means. It also includes other features.

In addition, the present invention constitutes a body incorporating a piston to move up and down in accordance with the hydraulic pressure supplied to the hydraulic oil supplied to the clamping means, while holding the edge of the gripping object while lifting up and down in accordance with the piston lifting operation on the upper surface of the body and distance to one side It is provided with a pressure plate installed with a plate-shaped sensing plate for operating the sensor, and enters into the machine tool mold fixing frame T-shaped slot to support the body portion and to form a fixed piece to which one end of the roller chain of the clamp transfer means is fixed to one side. It further includes what is configured as a T-shaped guide portion.

The features described above will become more apparent from the following detailed description based on the drawings.

Figure 1 is a perspective view for explaining the present invention, Figure 2 is a side view of the present invention, Figure 3 is a side cross-sectional view of the present invention, Figure 4 shows a transport guide plate perspective view of the present invention.

A denotes a clamp, and the clamp A first and second conveying guide plates are formed on the inner surface of the slide guide grooves 101 and 111 of the rectangular shape to communicate in a perpendicular direction from the upper side to the front side. Comprising (100) and (110), the slide guide grooves formed on the inner surface of the first and second transfer guide plates are opposed to each other.

And the front and rear sides of the first and second conveying guide plates facing each other. It is installed to form a front spacer 120 and the rear spacer 130 of the stick shape to form a space (S) by maintaining the first transport guide plate and the second transport guide plate at regular intervals, the front spacer 120 is Connect the oil tube to be described later in the upper front and drills the long hole 121 to fit the elbow 226 for introducing the hydraulic fluid from the outside and protrudes a part of the upper portion above the first and second transfer guide plate. In addition, it is preferable that the front and rear spacers shown are fastened with bolts so as to be quickly replaced with spacers of different thicknesses as necessary.

Then, the support side plate 150, 160, which is formed by bending the flanges 151, 161 fixed to the outer surface of the first, second transfer guide plate and fixed as a bolt to the machine tool fixing frame to one side On the other hand, the sprocket wheel 154 is installed in the inner space of the conveying guide plate and is sequentially rotated by receiving the rotational force through the forward / reverse drive motor 152 and the reducer 153 mounted on the outer side of one support side plate. .

On the other hand, the clamp conveying means 200 is inserted into the inner space of the first and second conveying guide plate and slides forward and backward in the conveying guide plate inner surface slide guide grooves 101 and 111 according to the sprocket wheel forward / reverse rotation. And clamping means 300 which is fixedly installed at one end of the clamp conveying means and grips the edge of the gripping object while interlocking according to sliding of the clamp conveying means. To stop the clamping means precisely at the original position by sensing the gripping object and controlling the clamping means to stop at the clamping position or by detecting the distance of the clamping means to return to the original position according to the unclamping signal. To configure the distance detection sensor 400, 400 '.

In the illustrated embodiment, the clamp conveying means 200 is engaged with the gear portion of the sprocket wheel 154 that is forward / reversely rotating and slides along the slide guide grooves of the first and second conveyance guide plates 210. It is configured to further comprise a tube hanger 220 is installed so as to rotate to one side of the roller chain to support the oil tube 225 for supplying the hydraulic oil to the clamping means.

The roller chain 210 constitutes a plurality of link plates 211 pivoting around a plurality of chain shafts 214, and is located on the side of the plurality of link plates facing each other and slides in place about the chain shafts. A side rolling roller 212 sliding the grooves 101 and 111 is provided.

And a sprocket wheel bit roller 213 located between the opposing link plates, which also rotates about the chain shaft 214. In addition, by fastening the link plate located at one end of the roller chain having such a configuration to the upper end of the fixing piece 140 installed on the upper surface of the first and second transfer guide plate by fixing means such as bolts to fix one side of the roller chain. .

The tube hanger 220 is connected to the opposite link plate 211 one side is connected to the connecting pin 222 and cut forward from the center to form a holder 221 for holding the oil tube 225 in the center groove The material is injection molded into a synthetic resin material so as not to damage the surface of the flowing oil tube when the roller chain is driven.

And one side of the holder so that the oil tube does not fall forward An anti-separation shaft 223 is provided on the outer circumference of the shaft, and includes a cylindrical bushing roller 224 for guiding the oil tube to move smoothly.

In the illustrated embodiment, the clamping means 300 constitutes a cylindrical body 301 having a piston that is raised and lowered according to the hydraulic oil supplied, and the upper and lower surfaces of the body by the piston lifting and lowering operation Pressing and holding the lower edge of the gripping object and on one side provides a horseshoe-shaped pressure plate 302 for installing a plate-shaped sensing plate 302a for operating the distance sensor 400.

And the T-shaped guide part 303 which forms the fixed piece 303a by which the one end of the roller body of a clamp conveying means is fixed to one side while entering and exiting a machine tool mold fixing frame T-shaped slot 1a.

In the figure, reference numeral 401 shows a bracket for fixing the distance sensor to the bottom of one side of the support plate.

The action of the mold holding clamp of the present invention configured as described above will be described.

First, the flanges 151 and 161 of one side of the clamping side plates 150 and 160 of the clamp are brought close to the side wall of the upper fixing frame of the machine tool and fastened with bolts. At this time, the T-shaped guide 303 of the clamp means is fixed to the upper fixing frame T. Installation of the desired clamp is completed by extending over the slot 1a entry portion.

Then, when power is applied to the forward / reverse drive motor 152 by pressing a power button from a console box (not shown), the drive motor first generates rotational power in the forward direction, and then the rotational speed is reduced to low speed through the reduction gear 153. 1st, 2nd transfer in the held state Sprocket wheel chuck roller 213 in the sprocket wheel 154 installed in the guide plate inner space (S) in the roller chain 210 of the clamp conveying means engaged with the sprocket wheel gear portion while rotating in one direction as shown in FIG. The roller chain side rolling roller 212 is eventually moved along the slide guide grooves 101 and 111 of the first and second transfer guide plates, and finally the roller chain is pushed forward.

At this time, the clamping means 300, which is connected to one side of the roller chain of the clamp conveying means 200, is also transferred to the edge of the machine tool gripping object 2 by the aforementioned clamp conveying means as shown in FIG. The part 303 is installed at one side of the sensing plate 302a to stop at the clapping position by the distance detecting sensor 400 'that detects the gripping object. Since the clamping means is operated to hold the gripping object, the clamping operation state will be described in detail as follows.

That is, when the oil tube 225 is connected to the elbow 226 fastened to the front spacer hole 121 and the oil is supplied from the oil supply pipe (not shown), the hydraulic oil rides through the oil tube and the body of the clamp means. 301 flows inside. Inflow of the hydraulic oil is to press the piston installed in the body upwards to raise the pressure plate 302 to cooperate with the piston to press the lower side of the gripping object (2) to complete the clamping.

In the following, an unclapping operation state for replacing the gripping object after clamping the gripping object to the machine tool fixing frame by using the clamp described above will be described.

That is, by holding the piston lowered by discharging the hydraulic fluid introduced into the body of the clamping means 300 by the pressure plate 302 interlocked with the gripper object press Release the grip from Lee and come down. Then, when the forward / reverse drive motor 152 is rotated in the reverse direction, the sprocket wheel 154 also rotates in the reverse direction, and the roller chain 210 of the clamp conveying means, which has come out of a certain distance, returns to the unclamping position.

As the roller chain returns to the unclamping position as described above, the sensing plate 302a installed on the rear side of the clamping means body operates the distance detecting sensor 400 mounted on the lower side of the supporting side plate. By turning off the power to stop the motor driving force, the clamping means eventually stops exactly in place without hitting one side of the clamp.

On the other hand, the operation of the clamp transfer means moving in accordance with the above-described clamping operation and unclamping operation will be described as follows.

When the clamp conveying means is conveyed forward and backward along the direction of rotation of the sprocket wheel 154, the link plate at one end of the roller chain is fixed to the upper end of the fixing piece 140 installed on the upper surface of the first and second conveying guide plates. When the end link plate is fixed to the T-shaped guide portion fixing piece 303a of the clamping means and freely moves to the free end, the plurality of link plates 211 rotate freely about the chain shaft 214 and the roller chain operates smoothly. Will be.

In addition, in the tube hanger 220, one side of which is connected to the roller chain link plate with the connecting pin 222 to be freely rotated, the holder 221 for holding the oil tube therein is freely flowed so that the oil tube interlocks with the roller chain ( Do not twist 225).

In addition, the flowing oil tube is freely slid while contacting the bushing roller 224 interposed on the release preventing shaft as well as not being separated by the release preventing shaft 223 installed in the transverse direction on one side of the holder.

The present invention described as described above can be quickly and easily grasped from the side of the gripping object after fixedly installing a plurality of clamps in place of the upper fixing frame of the machine tool, such as a screw fastening method using a plurality of bolt nuts as before It is not complicated, and it can quickly respond to frequent replacement of gripping objects, reduce work man-hours, and provide stable and solid gripping force at all times to prevent safety accidents and achieve precision processing.

In addition, regardless of the various widths of the object to be gripped, a clamp is used to quickly and easily clamp a plurality of different holding objects of different widths to provide various effects that further improve the reliability of the product.

The above is only one embodiment of the present invention, the present invention is capable of various changes and modifications within the scope of the configuration.

Claims (6)

First and second transfer guide plates (100) (110) formed on the inner side of the slide guide grooves (101) and (111) communicating perpendicularly from the upper side to the front side; The front spacer 120 and the rear which are installed in the front and rear between opposing first and second transfer guide plates to form the space S by maintaining the first transfer guide plate and the second transfer guide plate at regular intervals. A spacer 130; A support side plate (150) (160) for supporting and fixing the first and second transfer guide plates; A sprocket wheel 154 installed in the transport guide plate inner space S and sequentially receiving power through a driving motor 152 and a speed reducer 153 mounted on one side of the support side plate; The clamp conveying means 200 is inserted into the inner space of the first and second conveying guide plate and slides forward and backward in the conveying guide plate inner side slide guide grooves 101 and 111 according to the sprocket wheel forward / reverse rotation. ; A clamping means 300 fixedly installed at one end of the clamp conveying means and gripping an edge of the gripping object while interlocking according to sliding of the clamp conveying means; When the clamping means is transported to hold the clamping means spaced at a certain distance, the clamping means is sensed by controlling the clamping means to stop at the clamping position, or by detecting the distance of the clamping means returning to the original position according to the unclamping signal. Distance sensor 400, 400 'to stop exactly at; The clamp for mold holding, characterized in that consisting of. The method of claim 1, wherein the front spacer 120 forms a long hole 121 penetrating through the upper front surface, the upper portion of the first and second transfer guide plate 100, 110 characterized in that protrudes upwards. Clamp for mold holding. The roller chain 210 of claim 1, wherein the clamp conveying means 200 is engaged with the gear portion of the sprocket wheel 154 that is forward / reversely rotating and slides along the slide guide grooves of the first and second conveyance guide plates. And a tube hanger 220 installed to rotate to one side of the roller chain, the tube hanger 220 supporting an oil tube 225 for supplying hydraulic oil to the clamping means. 4. The roller chain 210 of claim 3, wherein the roller chain 210 constitutes a plurality of link plates 211 that pivot about a plurality of chain shafts 214, and is located on the side of a plurality of opposing link plates to center the chain shaft. And a side rolling roller 212 which rotates in position with the sprocket wheel biting roller 213 positioned between the opposing link plates and also rotating about the chain shaft. . The holder 221 of claim 3 and 4, wherein the tube hanger 220 is connected to the opposite link plate by one side with a connecting pin 222, and is cut forward from the center to support the oil tube in the center groove. ), And the oil tube is opened to one side of the holder A clamp for holding a mold, characterized in that consisting of a bushing roller (224) for smoothly inducing the movement of the oil tube flowing in the shaft and the separation prevention shaft (223) so as not to fall forward. The method of claim 1, wherein the clamping means 300 comprises a body 301 incorporating a piston to move up and down in accordance with the hydraulic pressure supplied to the hydraulic material, while lifting up and down in accordance with the piston lifting operation on the upper surface of the body Pressing plate 302 to install the plate-shaped sensing plate 302a for operating the distance sensor 400 to one side while holding the edge, and the body 301 while entering and exiting the machine tool mold fixing frame T-shaped slot (1a) The mold holding clamp, characterized in that consisting of a T-shaped guide portion 303 which supports and forms a fixed piece 303a to which one end of the roller body of the clamp transfer means is fixed.