KR20050047068A - Table for exchanging metallic mould - Google Patents

Abstract

The present invention relates to a trolley for exchanging and inserting molds from various mold apparatuses, and more particularly, two push-pull chains capable of a push-pull operation for heavy materials. ) To move along the guide rail fixed to the upper frame, and to the front end link of the push pull chain, install the hook that is caught by snap and the hook pin of the bracket fixed to the mold, and the rear end of the push pull chain. The part is wound around the inside of the storage case through a sprocket by a certain allowable length, and relates to a mold replacement bogie to allow easy and quick replacement of the mold from various mold apparatuses.

The trolley for mold replacement according to the present invention is provided so that the upper frame 2 into which the plurality of supporting rollers 2a are rotatably inserted along its length direction is supported by the lower frame 1 forming the steel structure. A body of a bogie having a table shape is formed, and a mold rest rest (3) having a support roller (3a) for drawing out and inserting a mold is installed at the front side of the upper frame (2), and the upper frame (2) One side of the side frame (4) having a side roller (4a) is installed, the central side of the upper frame (2) both side plate 13 formed in a "Z" shape guide roller (12a) Guide rail (5) in which two rows of push-pull chains (6) connected by linking roller pins (12) are fixed along the longitudinal direction of the upper frame (2). Guide roller (12a) of the roller pin 12 is seated on the upper surface of the It is installed to move forward and backward along the rail (5), and is snapped to the locking pin (17) of the bracket (16) fixed to the mold to the front end link (14) of the push pull chain (6) The hook 15 is installed, and the rear end of the push pull chain 6 has a sprocket 7 connected to the drive motor 11 and a take-up roller 8a of a storage case 8 corresponding to the upper portion of the sprocket 7. It is characterized in that it is installed to be wound to a predetermined length in the inner space of the storage case (8) via.

Description

Balance for Mold Exchange {Table for exchanging metallic mold}

The present invention relates to a trolley for exchanging and inserting molds from various mold apparatuses, and more particularly, two push-pull chains capable of a push-pull operation for heavy materials. ) To move along the guide rail fixed to the upper frame, and to the front end link of the push pull chain, install the hook that is caught by snap and the hook pin of the bracket fixed to the mold, and the rear end of the push pull chain. The part is wound around the inside of the storage case through a sprocket by a certain allowable length, and relates to a mold replacement bogie to allow easy and quick replacement of the mold from various mold apparatuses.

In general, a metal mold is a mold made of metal, and is a press mold used for various press operations, and a forging and casting mold used for forging and casting as a kind of metal processing method. And injection molds used for injection molding of plastic products, and dies used for die-casting, a casting method for injecting molten metal into a mold under pressure above atmospheric pressure.

When the molding work required for a certain period of time using the various molds as described above, the molding surface of the mold is worn and deformed, so that the dimensional accuracy of the product is reduced, remove the pre-installed mold from the mold apparatus and then apply a new mold. The mold is not only a heavy object having a weight of tens to hundreds of kilograms even when the size of the mold is small, but also a weight of several tens of tons when the mold is large. Replacement of the mold is virtually impossible.

Therefore, separate equipment is used to replace molds from various mold apparatuses. In the conventional case, a mold to be replaced is hanged on a crane moving along a ceiling rail, and then a mold is removed from the mold apparatus using the crane. The mold removed from the mold apparatus is transferred to the storage warehouse by means of a crane or a forklift, and then a new mold is removed from the storage warehouse and remounted in the mold apparatus using the same means as above. It was made.

However, if the mold is replaced in the conventional manner as described above, the partial dismantling of the mold apparatus is inevitable to hang the mold on the crane, which requires a lot of time and cumbersome work when replacing the mold, and also a heavy mold. There was a problem that the mold device or its peripheral device collides with the mold and is damaged in the process of transporting it in the state of hanging on the crane, there is a problem that acts as a risk factor in terms of safety of the operator.

In particular, when the mold is remounted while the new mold is hanging on the crane, it is difficult to fix the mold in the exact position required because the mold is easily shaken, which causes more time to replace the mold. In addition, there is a problem that the replacement of the mold is more difficult, and the precise position control of the newly installed mold is difficult, so that the reliability of the mold is lowered, resulting in poor productivity and quality of the product by the mold apparatus. There was a problem affecting.

The present invention has been made in order to solve the conventional problems as described above, the mold replacement truck according to the present invention is a push-pull (push-pull: push-pull) operation for heavy weight two rows (列) ) To move along the guide rail fixed to the upper frame, and to the front end link of the push pull chain, install the hook that is caught by snap and the hook pin of the bracket fixed to the mold, and the rear end of the push pull chain. The part is wound through the sprocket to the inside of the storage case by a certain allowable length, so that the mold can be safely drawn out and inserted from various mold apparatuses even without the troublesome work such as dismantling the mold apparatus or using heavy equipment such as a crane. As a result, the mold replacement can be performed very quickly and easily. It prevents damage to peripheral devices and workers' safety accidents due to body work, and improves reliability by replacing molds more accurately by re-installing molds according to the operation of push-pull chains by guide rails. It is technical problem.

The present invention for achieving the above technical problem, the body of the trolley having a roller table shape is installed so that the upper frame is inserted into the plurality of support rollers rotatably in the longitudinal direction is supported by the lower frame of the steel structure Is formed, the mold rest rest having a support roller for drawing and inserting the mold on the front side of the upper frame is installed, a side frame having a side roller is installed on one side of the upper frame, the central side of the upper frame The roller pins on the upper surface of the guide rail is fixed along the longitudinal direction of the upper frame of the two rows of push-pull chains linked by a roller pin having guide rollers. The guide roller is seated and installed to move forward and backward along the guide rail, The front end link of the push pull chain is provided with a hook to be snapped to the locking pin of the bracket fixed to the mold, the rear end of the push pull chain of the sprocket connected to the drive motor and the storage case corresponding to the upper portion of the sprocket It is characterized in that it is installed to be wound by a predetermined length in the inner space of the storage case via the take-up roller.

Hereinafter, described in detail with reference to the accompanying drawings, the present invention for achieving the above object is as follows.

1 to 3 is a side view and a plan view and a rear view of the mold exchange trolley according to the present invention, Figure 4 (a) and (b) is a side view and a plan view showing the structure of the push pull chain used in the present invention. 5 is a cross-sectional view illustrating an installation state of a push pull chain used in the present invention, and FIG. 6 is a side view illustrating a structure of a connection portion between a push pull chain and a mold used in the present invention, and FIGS. 7 and 8 illustrate the present invention. It is a top view which shows the application example of the trolley | bogie for metal mold | die replacement by this.

As shown in Figs. 1 to 3, the mold exchange trolley 10 according to the present invention has a high strength section steel material such as “H” section steel or “I” section steel connected and fixed in the form of a frame so that the base portion thereof is fixed. The lower frame 1 is formed, and the upper frame 2 is installed on the upper side of the lower frame 1 is rotatably inserted between the plurality of support rollers 2a along the longitudinal direction of the steel structure. The body of the trolley 10 having the shape of a roller table is formed.

The upper frame 2 of the trolley 10 forming the shape of the roller table as described above is preferably installed in a form in which the two roller tables are spaced apart at regular intervals based on the total width thereof. The support roller (2a) to facilitate the carrying out operation of the mold for withdrawal and insertion of the mold, while reducing the overall weight of the trolley (10).

In addition, although the upper frame 2 is shown to be fixedly installed on the upper side of the lower frame 1 in the drawings, it is easier to take out and insert the mold in accordance with the position of the mold installed in the various mold apparatus. Various means capable of adjusting the height of the upper frame 2 with respect to the lower frame 1 may be installed between each frame (1) (2).

As an example, the elevating means consisting of an elevating bar bolt fixed to the column top of the lower frame 1 and penetrating the upper frame 2 and a height adjusting nut fastened onto the bar bolt, or the lower frame 1 A hydraulic lifting means in which a hydraulic cylinder is fixed on the piston rod and a tip of the piston rod is fixed to the upper frame 2, or a driving motor having a reduction gear and a driving gear on the lower frame 1, Gear type lifting means, etc., in which the rack gear meshed with the upper frame 2 is fixed.

And, in the front side of the upper frame (2) is provided with a mold restraint (3) having a support roller (3a) is connected to the upper frame (2) to assist withdrawal and insertion of the mold, the mold rest (3) serves as a temporary stand for the mold for drawing out the mold from various mold apparatuses or for mounting a new mold through the mold apparatus, and may not be installed depending on the type of mold.

In other words, since most of the molds are formed with empty space at the bottom center except for the upper molding surface in order to reduce their own weight, the guide rail 5 installed at the center of the upper frame 2 when the mold is taken out. The mold rests 3 can be inserted through the bottom of the mold, thereby allowing the front surface of the upper frame 2 to directly adjoin the mold apparatus so that the mold can be drawn out to the upper frame 2 side. There is no need to install it.

On the contrary, when the bottom surface of the mold is not formed as an empty space, the mold is placed on the guide rail 5 provided at the center of the upper frame 2 in the process of drawing the mold from the mold apparatus toward the upper frame 2. Since it is caught and cannot be taken out, a mold rest frame 3 capable of temporarily mounting a mold on the front side of the upper frame 2 should be provided.

However, in order to be able to apply the mold replacement cart 10 interchangeably regardless of the type of the mold, it is more preferable to install and use the mold holder 3 together with the upper frame 2. When the mold is drawn out to the upper frame 2 side as described above, a side frame 4 having a side roller 4a is installed at one side of the upper frame 2 for safe transportation and support of the mold.

In addition, the guide rail 5 is fixedly installed along the longitudinal direction of the upper side of the upper frame 2 as described above, and the upper surface of the guide rail 5 is push-pull for a heavy material. Push-pull chain 6, which is capable of pushing and pulling), is installed to be moved forward and backward along the guide rail 5, and a mold connector 9 for connection with a mold is provided at the front end of the push-pull chain 6; ) Is installed.

In addition, the sprocket fixed to the motor shaft (11a) of the drive motor 11 to move the push pull chain (6) forward and backward along the guide rail (5) in the rear central portion of the upper frame (2). (7) is provided, and a storage case (8) into which the take-up roller (8a) of the small sprocket form is rotatably inserted is installed directly on the sprocket (7).

For this reason, the rear end of the push pull chain 6 extends through the sprocket 7 to the upper side of the inside of the storage case 8, and then again through the winding roller 8a to the inside lower side of the storage case 8. As a result, the inner space of the storage case 8 is wound by a certain clearance length, which is preferably longer than the operating length of the push pull chain 6 for drawing out and inserting the mold from the mold apparatus.

In addition, as shown in (a) and (b) of FIG. 4, the push pull chain 6 used in the present invention has both side plates 13 formed in a “Z” shape. Linked by a roller pin 12 having a guide roller 12a at the center thereof, it is linked by a chain, and pulling a heavy object is made in the same way as a general chain, but unlike pushing a heavy object, the chain is not bent or bent. It is to be able to easily push the weight without.

In the present invention, the push-pull chain 6 as described above is fixed in two rows, and as shown in FIG. 5, the guide roller 12a of the roller pin 12 is guide rail 5. The push pull chain 6 is installed to be seated on an upper surface of the push pull chain 6 because the front and rear movements of the push pull chain 6 are more stable and unstable by the guide roller 12a and the guide rail 5. It is to improve the reliability according to the replacement operation of the mold by allowing it to be performed accurately.

In addition, the number of the guide rails 5 on which the guide rollers 12a of the roller pins 12 are seated is also connected to the push-pull chain 6 at the same time as the push pull chain 6 is connected to three or more rows. Although it may be increased to fit, this may cause a volume increase due to the installation of the mold exchange trolley 10 and a unit cost increase due to the manufacture thereof, so that the number of arrangement of the push pull chain 6 is preferably two rows. It is preferable to set it as (iii).

In addition, the mold connector 9 installed at the distal end of the push pull chain 6 has a bracket 16 fastened and fixed to the mold as shown in FIG. 6, and the bracket 16 is caught. It is caught by the pin 17 is made of a hook 15 is connected to the front end link 14 of the push pull chain 6 to enable the extraction and insertion of the mold by the push pull chain (6).

In addition, the locking pin 17 of the bracket 16 is elastically rotatable around the hinge coupling portion 17a, so that the hook 15 pushes the locking pin 17 in to snap. Is to be inserted and fixed, the bracket 16 may be pre-installed in the mold itself to be replaced, the bracket 16 and the hook 15 at the tip of the push-pull chain (6) in the form of a set In this case, the bracket 16 may be fixed to an arbitrary position of the mold as necessary.

Hereinafter, the working relationship of the present invention having the above configuration will be described in detail with reference to FIGS. 1 to 3.

First, the mold replacement truck 10 according to the present invention is installed or positioned so as to be adjacent to a mold apparatus (not shown) that requires replacement of the mold, and then the hook 15 and the mold installed at the tip of the push pull chain 6. When the locking pins 17 of the bracket 16 fixed to each other are caught by each other, the primary setting for pulling out the mold from the mold apparatus is completed by using the mold exchange trolley 10 of the present invention.

When the sprocket 7 is rotated by operating the drive motor 11 in the above state, the push pull chain 6 moves to the rear side along the guide rail 5 and is connected to the push pull chain 6 at the same time. The mold is easily pulled out by the support rollers (2a) and (3a) from the mold apparatus to the mold rest frame (3) or the upper frame (2) side to perform partial dismantling of the mold apparatus or use a separate crane. If not, it is possible to quickly and easily withdraw the mold from the mold apparatus.

In addition, the rear end portion of the push-pull chain 6 is wound by a predetermined length in the inner space of the storage case 8 via the sprocket 7 and the winding roller 8a of the storage case 8 during the extraction operation of the mold as described above. In this case, the length of the push-pull chain 6 wound inside the storage case 8 is the movement distance of the push-pull chain 6 required for mounting the mold, and the mold is drawn out from the mold apparatus. Is placed in the place adjacent to the cart 10 or is transported to the mold storage using a forklift or the like.

After the withdrawal of the mold is completed, a new mold must be mounted through the portion where the mold is drawn out. To this end, a new mold to be replaced is placed on the mold rest frame 3 or the upper frame 2 side. In the state, the hook 15 installed on the tip of the push-pull chain 6 and the locking pin 17 of the bracket 16 fixed to the mold are engaged with each other.

When the drive motor 11 is operated in the above state to rotate the sprocket 7 in a direction opposite to the initial direction, the push pull chain 6 wound in the inner space of the storage case 8 is sprocket ( 7) As it is released along with the push pull chain 6 moves forward along the guide rails 5, the mold placed on the mold rests 3 or the upper frame 2 is push-pulled. It is easily inserted into the mold apparatus by the push operation peculiar to the chain 6 and the support rollers 2a and 3a.

In addition, as mentioned above, the guide rollers 12a of both roller pins 12 can be moved along the guide rails 5 while the push pull chains 6 are fixed in two rows. Since it is installed, the front and rear movement of the push-pull chain 6 can be performed stably and accurately without shaking by the guide roller 12a and the guide rail 5, and thus, when the mold is reinstalled, Since the mold can be accurately inserted into the required position, the reliability of the mold replacement can be improved.

7 and 8 show that the mold exchange trolley 10 according to the present invention is practically applied to the site, and one mold exchange trolley 10 is applied to one mold apparatus. Although it may be fixedly installed and used, the vehicle 20 may be mounted as shown in FIG. 7 or the rail 30 may be moved as shown in FIG. 8.

That is, shown in Figure 7 is a rear wheel 22, its steering device 21 and the front wheel 23 is installed in a vehicle 20 having a hydraulic unit 24 and a control panel 25 of the present invention The mold exchange trolley 10 is loaded so that the trolley 10 can be easily moved to the required mold apparatus side, and shown in FIG. 8, two mold exchange trolleys 10 are connected in parallel. One side of the trolley 10 to perform the withdrawal operation of the mold and the other side of the trolley 10 so that each of the trolley 10 can be moved in a train type along the rail 30 It is.

As described above, the trolley for mold replacement according to the present invention is a roller table-shaped trolley and push, without undergoing a task of partially dismantling the mold apparatus or carrying a heavy mold in a state of hanging on a crane for replacement of the mold. It is possible to draw out and insert the mold very easily and conveniently from various mold devices by using the full chain, which not only saves the time and cost according to the mold replacement work, but also the mold In addition, there is an effect that can prevent the damage to the peripheral device and the worker's safety accident that may occur during the replacement process.

In particular, according to the stable and accurate operation of the push-pull chain by the guide rail can be accurately reinstalled in the position that requires the mold, it is effective to greatly improve the reliability of the replacement of the mold, thereby through the mold device Not only can it contribute more to the productivity and quality improvement of the product, but it is also effective to perform the replacement work of the mold more efficiently by mounting the trolley itself in the vehicle or installing the rail in a movable manner.

1 is a side view of a trolley for mold replacement according to the present invention;

2 is a plan view of a trolley for mold replacement according to the present invention;

Figure 3 is a rear view of the trolley for mold replacement according to the present invention.

Figure 4 (a) and (b) is a side view and a plan view showing the structure of a push pull chain used in the present invention.

5 is a cross-sectional view showing an installation state of the push pull chain used in the present invention.

Figure 6 is a side view showing the connection structure of the push-pull chain and the mold used in the present invention.

7 and 8 are plan views showing an application example of the trolley for mold replacement according to the present invention.

<Explanation of symbols for main parts of the drawings>

1: lower frame 2: upper frame 2a, 3a: support roller

3: mold supporter 4: side frame 4a: side roller

5: guide rail 6: push pull chain 7: sprocket

8: storage case 8a: winding roller 9: mold connector

DESCRIPTION OF SYMBOLS 10 Truck for a mold replacement 11 Drive motor 11a Motor shaft

12: roller pin 12a: guide roller 13: side plate

14: end link 14a: fastening hole 15: hook

16: bracket 17: locking pin 17a: hinge coupling portion

Claims (1)

The upper frame 2 into which the plurality of support rollers 2a are rotatably inserted along the longitudinal direction is installed to be supported by the lower frame 1 constituting the steel structure to form a body having a roller table shape. , On the front side of the upper frame 2, a mold rest 3 having a supporting roller 3a for drawing out and inserting the mold is installed, and one side of the upper frame 2 is provided with a side roller 4a. Side frame (4) is installed, On the central side of the upper frame 2, the two side plates 13, which are formed in a “Z” shape, are linked in two rows by roller pins 12 having guide rollers 12a. The guide rail 12a of the roller pin 12 is seated on the upper surface of the guide rail 5 on which the push-pull chain 6 is fixed along the longitudinal direction of the upper frame 2. (5) is installed to move forward and backward, The front end link 14 of the push pull chain 6 is provided with a hook 15 to be snapped to the locking pin 17 of the bracket 16 fixed to the mold, and the rear end of the push pull chain 6. The part is wound around the sprocket 7 connected to the drive motor 11 and the winding roller 8a of the storage case 8 corresponding to the upper portion of the sprocket 7 by a predetermined length in the inner space of the storage case 8. The trolley for mold replacement, characterized in that it is installed to lose.