KR101938683B1 - Mold-changing device of molding press - Google Patents

Abstract

The present invention can easily and easily separate and fasten the upper and lower molds to be exchanged in order to draw and clean the molded product by moving upper and lower dies applied to a hydraulic molding press or the like and to mold another molded product, The present invention relates to a mold changing apparatus for a molding press which is simple and convenient in operation.
The present invention comprises a guide plate 23 for fastening a heat insulating plate 22 to a fixed ram 21 fixed to a main block 20 of a conventional forming press 200 and a vacuum chamber 30 vertically interlocked However,
In the present invention, the long rail cylinder (28) penetrates through the through holes (23) of the guide plate (23)
The front and rear rails 25 are hinged to the bearing 24 formed on the guide plate 23 fixed to the fixed ram 21,
The rotation guide plate 40 which is sandwiched by the guide rods 42 formed on the upper and lower sides of the fixed lid 41 and moved laterally is moved in a simple and convenient manner by the operation of the guide plate cylinder 45 fastened to the fixed lid 41 And the convenience of operation is made to be the effect of the characteristic technology.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a mold-

The present invention relates to a method and apparatus for simply and easily separating and replacing upper and lower molds, which are exchanged in order to draw and clean a molded product by moving upper and lower dies applied to a hydraulic molding press or the like, And more particularly, to a mold exchange apparatus for a molding press in which a mold replacement operation is simple and convenient.

The molding of synthetic resin such as urethane rubber or silicone is generally carried out by putting synthetic resin raw material such as urethane rubber or silicone into a molding cavity of a mold mounted on a press equipped with upper and lower molds, With the occlusion of the mold, the raw material introduced through heat and pressure in the vacuum chamber is molded by a molding hole, and the molded article is formed in a process of disengaging from the molding cavity.

The molds used for such presses are not only large in size but also heavy in weight, so that they are moved only by the workforce of a worker, and it is very difficult to get on and off the press.

In order to solve this problem, a mold moving means for injecting a raw material and releasing a molded article is generally known in a conventional press. However, this technique is merely a moving means for releasing a simple molded article, It is difficult.

Prior Art Utility Model Publication No. 20-1997-0006951 as the mold moving means is provided with a vacuum chamber connected by a link hinged to a fixed plate of a press and another link formed on the lower transfer slide plate so that the vacuum chamber can be interlocked And constitutes a top shape mounted in the vacuum chamber.

And the lower mold transfer slide plate is transferred to expose the upper mold by opening the vacuum chamber mounted with the upper mold together with the lower mold and moving to the upper side by the link so that the molded product can be released. It is impossible to accomplish the exchange of the weight and the mold.

Accordingly, according to the improved prior art, in the utility model registration Nos. 20-0295047 and 20-0336717, a semicircular rotation guide rail is formed on a fixed arm fixed to a normal press upper body, and on both sides of the main block, And the corresponding linear rail was fixed.

As a result, when the movable half coupled with the lower mold is moved, the upper half type joint plate which is located on the vertical vertical rail in the movable half is interlocked, and the upper half type joint plate with the upper half type is advanced and rotated by the straight rail and the rotation guide rail. The mold is set up diagonally. In this state, work such as separation of the molding and injection of the raw material is performed.

In this way, it is extremely difficult and dangerous to work to separate or fasten the mold from the upper mold type fastening plate to which the heavy duty mold type fastener is fastened.

In order to solve such a problem, prior art registration utility model No. 20-0406321 and its original publication No. 10-2007-0048433 disclose a rubber molding press, which comprises a pair of fixing pieces which are downwardly fixed to the upper base portion, A semi-circular rotating rail plate constituting a guide rod and capable of manually adjusting the width of the guide rod,

And a linear guide rail having rods of cylinders fixed to the upper base portion passing through the vacuum chamber and formed on both sides of the main block is connected to the rotary rail plate.

However, since the linear guide rail is vertically movable by means of the cylinder rod mounted on the upper main block, the linear guide rail is moved up and down, and the upper mold-shaped projection, which is placed on the linear guide rail, The mold moves up and down.

As a result, in the state in which the lower mold is clamped to the working position by the interlocking motion of the movable mold, the upper mold and the mold of the lower mold are removed and fastened.

However, this structure is very similar to that of the above-described construction, and as a new technique, a guide rail on which a weight-type upper mold and a mold-shaped mold are placed is moved up and down by an elongated cylinder rod, There is a risk of falling out of the prizewinning form, which is a heavy item, and the punching form of the prizmaform.

In addition, as described above, the elongated cylinder rod has a problem of going outward due to its weight. As a result, the linear guide rail deviates from the proper position and causes friction factor between the vacuum chamber and the vacuum chamber. There is a disadvantage in that the disadvantage of disconnection occurs, which may lead to defective transfer of the preform-shaped preform, which is practically difficult to carry out.

Utility Model Notification No. 20-1997-0006951. Registered Utility Model No. 20-0295047. Registered utility model No. 20-0336717. Utility Model Registration No. 20-0406321 and Published Application No. 10-2007-0048433.

The present invention is intended to improve a mold changing apparatus of a forming press capable of easily carrying out a process of withdrawing and cleaning a molded product formed by a mold in a molding press, supplying raw material, and replacing a mold for obtaining another molded product.

Particularly, in the prior art cited in the background art, when a load such as a heavy-weight metal mold is continuously moved up and down, and rotation, etc., an elongated cylinder rod, .

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and it is an object of the present invention to provide a method of fixing a mold and a mold fixing plate, which are made of heavy materials, in a state in which a forward / backward rail, The problem of the prior art is improved so as to constitute a stable operation without occurrence of trouble in use.

The solution of the present invention comprises a guide plate 23 for fastening a heat insulating plate 22 to a fixed ram 21 fixed to a main block 20 of a forming press 200, a vacuum chamber 30 vertically interlocked with the guide plate 23, A mold changing apparatus of a forming press capable of lifting a mold clamping plate (50) by a mold lifting plate (18) of a mold (11) and replacing the mold in a mold fixing plate (50)

delete

A rail cylinder 28 fixed to the main block 20 is hinged to both sides of the guide plate 23 and interlocked at an eccentric position of the forward and rearward rails 25, Forward and backward rail interlocking means for rotationally interlocking with the hinge shaft 27 as a starting point,

A rotation guide plate 40 fixed to the main block 20 and fitted in a guide rod 42 formed in the fixed ring 41 and being laterally moved and guiding the rotation guide plate 40 to the guide plate cylinder 45 fastened to the fixed ring 41, Control means,

The transfer roll 51 of the mold fixing plate 50 which is moved by the front and rear rails 25 hinged to the guide plate 23 and interlocked with the guide plate 23 is guided to the vertical rail 14 of the movable mold 11 11 for moving the mold clamping plate 50 forward and backward, and for lifting up and down the upper mold U,

The mold lifting plate 18 interlocked with the mold pulling cylinder 17 constituted on the movable platen 11 moves the upper mold U or the mold clamping plate 50 for clamping the upper mold U upwards and downwards And to provide a mold replacement means capable of replacing a mold or removing a mold from a molding cavity of the mold and cleaning the mold.

The present invention improves the problems caused by deflection and deviation of the cylinder rod which causes the rails to bend outward and downward in the forward and backward movement and the up / down movement in the rails from the upper die and the mold fixing plate in the conventional vacuum forming press .

In the present invention, the long rail cylinder 28 is passed through the through holes on both sides of the guide plate 23 to prevent the cause of failure such as stable up-down and down-

The front and rear rails 25 are hinged to the bearing 24 formed on the guide plate 23 fixed to the fixed ram 21,

The rotation guide plate 40 which is sandwiched by the guide rods 42 formed on the upper and lower sides of the fixed lid 41 and moved laterally is moved in a simple and convenient manner by the operation of the guide plate cylinder 45 fastened to the fixed lid 41 And the convenience of operation is made to be its characteristic technical effect.

1 is a front view showing the entire configuration of the present invention.
2 is an explanatory view showing an aspect of the present invention.
FIG. 3 is an explanatory view of interlocking of a rotation guide plate with respect to a structure for lifting the upper mold of the present invention; FIG.
Fig. 4 (a) is an operational explanatory view of a mold fixing plate fastened to the front and rear rails of the present invention,
(b) is an explanatory view of the operation of separating the mold holding plate from the forward and backward rails.

The present invention makes it easier and easier to carry out molding work of a synthetic resin material such as urethane rubber or silicone with a hydraulic press or a lower mold, releasing a molded article, injecting a raw material, and exchanging a mold for molding other molded articles The present invention provides a hydraulic press die replacing apparatus capable of making a hydraulic press.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in the front view of the entire mold exchanging apparatus of the present invention shown in FIG. 1, both sides of the control unit 100 are formed on both sides of the same molding press 200. Alternatively, And the molding press 200 is controlled by the control unit 100.

When the movable cylinder 11 is moved up and down by the main cylinder 10 constituting the lower portion of the gas, the molding press 200 connects the main block 20 of the upper part of the machine and the main cylinder 10 of the lower part of the gas The movable mold 11 on which the lower mold S heated by the heating plate is moved upward along the plurality of guide rods 12 is engaged with the upper mold U heated by the heat transfer plate 22, And the movable mold 11 on which the lower mold S is placed is lowered again so that the moldings not shown are pressed against the upper and lower molds U and S, And a conventional molding press 200 which is detached from the mold.

The present invention provides a mold exchange apparatus for a hydraulic press in which the upper and lower dies (U, S) can be easily and easily replaced in the molding press (200).

The present invention comprises a guide plate 23 for fastening a heat insulating plate 22 to a fixed ram 21 fixed to a main block 20 of a forming press 200, a vacuum chamber 30 vertically interlocked with the movable plate 11 And a mold clamping device for changing the mold from the mold clamping plate to the mold clamping plate by lifting the mold clamping plate to the mold clamping plate,

A plurality of bearings 24 piercing the shaft holes on both sides of the guide plate 23 are downwardly formed so that the shaft 26 and the hinge shaft 27 of the forward and backward rails 25, Along with the hinge configuration,

The rail cylinder 28 fixed to the main block 20 is hinged to the eccentric shaft hole 29 eccentrically opened to the front and rear rails 25 by the hinge shaft so that the rail cylinders 28 interlock with the front and rear rails 25 forward / rearward rail interlocking means for rotationally interlocking the hinge shaft 27 inward and outward from the hinge axis 27,

Is inserted into a pair of fixed rods 41 fixed to the main block 20 of the forming press 200 and is inserted into the guide rods 42 arranged up and down and moved left and right, The rotation guide plate 40 constituted by the guide rails 44 is constituted,

The rotation guide plate 40 fitted in the guide rod 42 is guided by the guide plate cylinder 45 fastened to the fixed rail 41 to move the front and rear rails 25 of the forward and backward rail interlocking means and the rotation guide plate 40 Rotation guide plate control means for controlling the rails (44) to achieve a straight-line bite and departure,

The transfer roll 51 protruded from the mold fixing plate 50 is placed on the front and rear rails 25 hinged to the guide plate 23 and interlocked with the guide plate 23 and transported to the traction plate 53 The hinged guide roll 54 is engaged with the rail groove 15 of the vertical rail 14 vertical to the transfer slide plate 13 of the movable platen 11 so that the transfer slide plate 13 contacts the mold transfer cylinder 16, The vertical rail 14 is moved in the forward and backward movement and the mold fixing plate 50 interlocked by the vertical rail 14 moves forward and backward to move the mold fixing plate 50 and the upper mold U fixed thereto And mold transfer means for moving up and down,

And a mold drawing cylinder 17 which is moved upward and downward by the movable platen 11 when the mold is to be removed or the mold is released and the mold is separated by transferring the transfer slide plate 13 formed on the movable platen 11. [ A mold clamping plate 50 for clamping the upper mold U or the upper mold U to which the lifting plate 18 has been transferred, a middle plate and a lower mold S, 50, which can conveniently carry out the work of releasing and cleaning the molding from the molding cavity of the mold,

For this traction, a projecting conveying roll 51 is provided on a mold fixing plate 50 placed on the mold lifting steel plate 18 and a transfer roll 51 is mounted on the mold lifting steel plate 50 in the upper mold U and the lower mold S It is of course possible to constitute a protrusion.

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

The present invention can be constituted by either or both of the same molding press 200 on both sides of the control unit 100 as shown in the front view of the entirety of the present invention mold exchange apparatus of FIG. 1, These molding presses 200 are controlled by the control unit 100, respectively.

The molding press 200 described above includes a movable mold 11 on which a lower mold S heated by a heating plate is mounted while the lower cylinder main body 10 is raised and lowered by the operation of the control unit 100 The molding operation is performed while moving along the guide rod 12 and being in engagement with the upper side heat exchanger plate 22 and lowering the vacuum chamber 30 while maintaining the vacuum state.

After completion of the molding, as shown in Fig. 2, the vacuum chamber 30 and the movable mold 11, on which the lower mold S is placed, are returned to the lower mold S And the movable base 11 are downwardly moved along the guide rod 12.

A guide plate cylinder 45 mounted on a pair of fixed lugs 41 fixed to the main block 20 of the molding press 200 interlocks with the guide rails 40 of the rotation guide plate 40 fitted in the upper and lower guide rods 42, (44) is moved in a straight line with the forward and backward rails (25).

As shown in Figs. 2 and 3, the transfer slide plate 13 mounted on the movable die 11 on which the lower die S is placed is supported by the transfer slide plate 13 The movable slide plate 13 and the vertical rail 14 formed on the transport slide plate 13 are moved together to move the movable slide plate 13 and the movable slide plate 13 in the rail groove 15 of the vertical rail 14 The guide rolls 54 of the traction plate 53 fastened to the mold fixing plate 50 are moved together.

The feed roll 51 of the mold clamping plate 50 having the upper mold U fastened by the movement moves forward along the forward and backward rails 25 and moves forward and backward along the forward and rearward rails 25 in a straight line As shown in the figure, the front side of the rotary guide plate 40 is moved to the upper side as shown in the figure, while being continuously moved along the linear guide rail 44 of the rotation guide plate 40 moved to the front side And the lower portion is downward, so that the mold is erected diagonally.

Accordingly, the upper mold U fastened to the mold fixing plate 50 exposes the molding cavity, that is, the molding, to the outside, thereby easily separating the molding from the exposed molding cavity, or performing a cleaning operation.

In addition, when the lower die S is moved forward by the movement of the feed slide plate 13, the molding part is exposed and the molding material is removed from the molding cavity, the cleaning material, the raw material material is injected, That is, when the molding operation is continued, it is well known that the molding operation can be continuously performed by cleaning the moved mold, injecting the raw material, and returning from the moved position.

Therefore, the molding operation, the separation of the molding from the upper and lower molds U and S, the cleaning, and the injection of the raw material are the same as known ones, and a detailed description thereof will be omitted.

The operation for replacing a mold that can more easily and easily replace the upper and lower dies (U, S) in the molding press 200 as described above is as follows.

2 and 4, when the mold is to be replaced with a mold for molding other forms of the molding using the molding press 200 of the present invention, a movable mold having a lower mold S, The rotary guide plate 40 shown in Fig. 4 (a) in a state in which the upper and lower dies U and S are engaged is brought into contact with the upper mold S, And moves to the outside of the chamber 30.

When the cylinder rod is operated by operating the rail cylinder 28 constituted on the main block 20, when the cylinder rod is interlocked, the bearing 24 passing through both sides of the guide plate 23 fixed to the fixed ram 21, The forward and rearward rails 25 turn from the hinge shaft 27 as shown in FIG. 4 (a) to the forward and rearward rails 25 And the transfer roll 51 of the mold fixing plate 50 placed on top is switched to the free state.

The mold fixing plate 50 having the upper mold U clamped together with the upper mold U is simply placed on the lower mold S or the intermediate plate not shown in the free state.

This action is achieved by the fact that the rod of the rail cylinder 28 is connected to the rail cylinder 28 by the eccentricity hinged to the shaft portion eccentric from the hinge shaft 27 of the forward / backward rail 25, The front and rear rails 25 are rotated with the hinge shaft 27 as the starting point as a starting point and the feed rolls 51 of the mold fixing plate 50 are separated from the front and rear rails 25 .

As described above, when the movable mold 11 is lowered again while the mold fixing plate 50 fastened with the upper mold U is placed on the lower mold S and the movable mold 11 is advanced to the mold transferring cylinder 16 The feed slide plate 13 configured on the movable half 11 rail is advanced and the upper and lower dies U and S are positioned in front of the forming press 200. [

When the mold drawing cylinder 17 of FIG. 2 is operated with the upper and lower dies U and S being fed, the upper mold U or the mold clamping plate 50 and the upper mold U, The illustrated intermediate plate or the like is lifted up and reaches the lifting position separated from the lower mold S or the intermediate plate.

When the upper mold U or the upper mold 50 is lifted and separated from the lower mold S, the upper mold U fastened to the mold fixing plate 50 is disassembled and separated or the upper mold U is rotated It is possible to fasten the mold to the fixing plate 50, thereby easily replacing the new mold.

The fastening structure for fastening the mold fixing plate 50 to the upper mold U can be variously configured according to the mold. However, as described above, when the upper mold S is separated from the mold fastening plate 50, The mold fixing plate 50 is lowered to the upper mold U placed on the lower mold S after the mold clamping plate 50 is lifted and the mold clamping plate 50 is lifted. It is possible to simply fasten the release and the new mold.

Then, the new upper and lower molds U and S are fastened to the mold fixing plate 50 as before, and the molding operation is performed by the above-described procedure.

The present invention as described above is applied to an elongated rail cylinder 25 which warps or interlocks the forward and backward rails 25 in the interlocking operation of supporting the metal mold clamping plate 50 having the upper mold U clamped with the upper mold U, The present invention relates to a mold for clamping a top die (U) and a top die (U) by weight, The front and rear rails 25 are fastened to the bearing 24 formed on the guide plate 23 fixed to the fixed ram 21 of the fixing plate 50 to prevent failure such as rigidity, The rod of the rail cylinder 28 hinged to the eccentric position from the hinge shaft 27 starts from the hinge shaft 27 coupled to the shaft portion 26 of the eccentric rail 25, So as to prevent malfunction by precise and stable operation Further, a stable operation can be achieved by a structure in which the rod of the elongated rail cylinder 28 is passed through the through holes on both sides of the guide plate 23 to completely prevent the cause of failure such as rising and falling steepness and warpage.

The molding process and the molding press of the present invention are the same as those of the conventional vacuum molding press, and therefore are not described in detail because they are obvious from the conventional knowledge in the art. A fastening and interlocking arrangement,

In particular, the rod of the long rail cylinder 28 is passed through the through holes on both sides of the guide plate 23 to prevent a cause such as stable rising and falling of the rail and the deflection,

The front and rear rails 25 are hinged to the bearing 24 formed on the guide plate 23 fixed to the one fixed rail 21, so that there is no breakdown failure even under a large load.

The rotation guide plate 40 which is sandwiched by the guide rods 42 formed in the upper and lower portions of the fixed lid 41 and moved laterally is moved easily and conveniently by the operation of the guide plate cylinder 45 fastened to the fixed lid 41 And the convenience of the operation is characterized by its characteristic effect.

The embodiment described above is a preferred example of the present invention, and the present invention is not limited thereto. The structure of the apparatus can be changed according to need, It is of course desirable to have the object and solution of the present invention.

10: main cylinder 11: movable plate 12: guide rod
13: Feed slide plate 14: Vertical rail 15: Rail groove
16: mold transfer cylinder 17: mold pulling cylinder 18: mold-lifting plate
20: main block 21: stationary ram 22:
23: guide plate 24: bearing 25: forward /
26: a shaft portion 27: a hinge shaft 28: a rail cylinder
29: eccentric shaft hole 30: vacuum chamber 40: rotation guide plate
41: stationary lid 42: guide rod 43: semicircular rail
44: guide rail 45: guide plate cylinder 50: mold fixing plate
51: feed roll 53: pull plate 54: guide roll
200: Molding press U: Upper mold S: Lower mold

Claims (3)

A guide plate 23 for fastening the heat insulating plate 22 to the fixed ram 21 fixed to the main block 20 of the forming press 200 and a vacuum chamber 30 vertically cooperating with the mold 22 of the movable die 11, A mold changing apparatus for a molding press capable of moving a mold clamping plate (50) up and down by a lifting plate (18) to replace a mold in a mold fixing plate (50)

The rail cylinders 28 fixed to the main block 20 are hinged to the front and rear rails 25 on the bearings 24 on both sides of the guide plates 23 and pass through the guide plates 23, Forward and rearward rail interlocking means for interlocking the front and rear rails 25 in rotation with the interlocking of the rail cylinders 28 hinged to the eccentrically located positions of the front and rear rails 25,

A rotation guide plate 40 interlocking with the guide rod 42 formed in the fixed base 41 fixed to the main block 20 of the forming press 200 is inserted into the guide plate cylinder 45 fastened to the fixed base 41, So that the guide rails 44 of the forward and backward rails 25 and the rotation guide plates 40 can be aligned in a straight line,

A transfer roll 51 protruded from a mold fixing plate 50 is placed on the front and rear rails 25 hinged to the guide plate 23 and interlocked with the guide plate 23 so as to be transported and the hinge plate 53, The guide rolls 54 are adhered to the rail grooves 15 of the vertical rail 14 vertical to the transfer slide plate 13 of the movable platen 11 so that the transfer slide plate 13 is moved to the mold transfer cylinder 16 The vertical rail 14 is moved in the forward and backward movement and the mold fixing plate 50 interlocked by the vertical rail 14 moves back and forth through the mold fixing plate 50 and the upper mold U fixed thereto, A mold transfer means for moving the mold up,

A metal mold or a mold capable of replacing the metal mold or the metal mold fixing plate 50 by lifting up the metal mold or the metal mold clamping plate 50 constituting the mold lifting plate 18 interlocking with the mold drawing cylinder 17 on the movable mold 11, And a mold releasing means for releasing the mold.
The method according to claim 1,
The forward and backward rail interlocking means is constituted such that the front and rear rails 25 hinged by the bearings 24 from both sides of the guide plate 23 and the rail cylinders 28 fixed to the main block 20 are connected to the eccentric And forward and backward rail interlocking means hinged to the eccentric shaft hole 29 formed at the position where the front and rear rails 25 are hinged and interlocked with the rail cylinder 28 so as to rotate the interlocking of the forward and rearward rails 25 starting from the hinge shaft 27 Mold changing apparatus for forming press.
The method according to claim 1,
The guide rail 42 is inserted into a guide rod 42 formed up and down at a fixed interval 41 fixed to the main block 20 of the forming press 200 and is moved leftward and rightward to form a semicircular rail 43, And a rotation guide plate (40)

The rotation guide plate 40 inserted into the guide rod 42 is guided by the guide plate cylinder 45 fastened to the fixed link 41 to move the front and rear rails 25 and the guide rails 44 And a rotation guide plate control means for controlling the release of the mold.

Images