KR100584209B1 - Vacuum device for pulf container manufacturing apparatus - Google Patents

Abstract

The present invention relates to a pulp container forming apparatus. An apparatus for forming a pulp container including a plurality of upper molds for lifting and lowering, and a lower mold meshing with the upper mold and partially moving horizontally by a slider; The upper mold is formed with a plurality of vent holes for adsorption of the pulp container; The vent is connected to the rod-type metal pipe 510; The rod-type metal pipe is inserted into the airtight state of the cylinder-type tube 500, which is fixed, and is capable of lifting up and down; The cylinder-type tube is characterized in that it can be connected to the device and the metal pipe for forming a vacuum. In addition, by connecting the lower mold using a cylinder-type tube in the same way, it is possible to form a vacuum path using a rod-type metal pipe and pipe.

Pulp container forming equipment, vacuum adsorption

Description

Vacuum device for pulp container forming apparatus

1 is an exemplary view showing the configuration of a conventional pulp container forming apparatus.

2 is an exemplary view showing a driving state of a conventional pulp container forming apparatus.

Figure 3 is an exemplary view showing the configuration of a conventional high pressure hose portion.

4 is an exemplary view showing a configuration of the present invention.

5 is an exemplary view showing an operating state of the tube of the cylinder type of the present invention.

The present invention relates to a pulp container forming apparatus, and more particularly to a pulp container forming apparatus that can more reliably constitute a vacuum flow passage used therein.

The pulp container is a recyclable material made of pulp as a main raw material, and is widely used as a lunch box container or a dish. Such a pulp container is generally made by applying heat and pressure using a predetermined mold in a state in which a predetermined amount of pulp and a solvent are mixed.

As an example of such a pulp container manufacturing apparatus, there is one disclosed in the Republic of Korea Utility Model Registration No. 283194, but the overall structure is complicated and the process is complicated disadvantages. That is, the molding apparatus according to the above technique, while forming a container using the pulp solution, and configured to go through the primary, secondary and tertiary molding step, it has been pointed out the disadvantage that the structure is complex as a whole. In order to solve this disadvantage, the molding apparatus proposed by the applicant of the patent application No. 20-2002-0028382 is shown in FIG.

As shown, the conventional pulp container forming apparatus is composed of a primary molding unit 100 and a secondary molding unit 200, the primary molding unit 100 and the secondary molding unit 200 is a continuous molding operation It is installed continuously as possible.

The primary molding part 100 is composed of a first lower mold 110 and a first upper mold 120, and when the first lower mold 110 and the first upper mold 120 are coupled, therebetween The pulp container is first shaped in. In addition, the first lower mold 110 is installed in the pulp solution reservoir 101, and is configured to be lifted up and down by a lifting device such as a hydraulic cylinder type tube or a pneumatic cylinder type tube. That is, the pulp solution supplied into the pulp solution reservoir 101 is sufficiently supplied to the first lower mold 110, and after the pulp solution is removed from the reservoir 101, the first lower mold 110 is removed. ) Will rise to the top.

In addition, the first lower mold 110 has a structure in which a plurality of holes are formed to discharge only the solution downward, and such a structure is disclosed in detail in the aforementioned application.

The first upper mold 120 engaged with the first lower mold 110 is installed on the mold mounting plate 121, and the mold mounting plate 121 is installed upright on the corner portion thereof, for example, four. The guide bar 102 is penetrated, and is guided along the guide bar 102. The first upper mold 120 is also lifted by the lifting device 132.

The secondary molding part 200 is installed at a position parallel to the primary molding part 100. The secondary molding part 200 is composed of a second lower mold 210 and a second upper mold 220. The second lower mold 210 is provided on an upper portion of the slider 230 that moves horizontally in the horizontal direction. The second upper mold 220 has the same structure as the first upper mold 120 described above, and is configured to move up and down by the elevating device 232.

In addition, the slider 230 performs the left and right reciprocating motion by a reciprocating means such as a hydraulic or pneumatic cylinder type tube. Accordingly, the second lower mold 210 installed on the slider 230 reciprocates between the lower position of the first upper mold 120 and the lower position of the second upper mold 220 by the slider 230. Will move.

On the front side of the slider 230 (based on the forward movement of the slider 230 (movement to the primary molding part side)), the shower 231 and the spray 233 are provided. In the shower 231, a liquid material such as water, and in the spray 233, a liquid coating agent is sprayed toward the first lower mold 110.

The water in the shower 231 is sprayed toward the first lower mold 110 to remove the tangled portion of the rim, thereby finishing the rim of the finished pulp container. In addition, the coating agent sprayed from the spray 233 may be sprayed with a predetermined time difference from the shower 231 and applied to the upper surface of the pulp container to be molded, thereby performing a function of coating the upper surface of the container.

In addition, at the right side of the slider 230 of the secondary molding part 200, a discharge plate 300 through which the completed pulp container is discharged is installed. When the finished pulp container is pushed to the right by the right end of the slider 230, the take-out plate 300 performs a function of receiving such a product and guiding it to a predetermined position.

And the mold (110, 210) has a built-in adsorption means for adsorbing the pulp container to be formed, a heater for forming a container by applying heat, such a configuration will be described with reference to FIG.

The configuration of the upper mold 120 and the lower mold 210 itself is substantially the same will be described mainly on the upper mold. As shown, the upper mold 120 is clamped by the mold base 112. And the upper part of the mold base 112 is provided with a hot plate 114 for generating heat by the application of electricity, the upper part is provided with a heat insulating material 115, the upper part of the heat insulating material for supporting the upper mold as a whole The top plate 116 is installed.

In addition, a plurality of vent holes 110a are formed in the upper mold 120, and the vent holes 110a are connected to the plurality of steel pipes 118 at the upper portion of the upper mold 120. The vent hole (110a) is for adsorbing the pulp container formed on the lower side of the upper mold. The plurality of steel pipes 118 are connected to each other at the top, and are connected to the high pressure hose 119 of a rubber material. The other end of the high pressure hose 119 is connected to a vacuum forming apparatus such as a vacuum pump.

When the vacuum pump is operated, a vacuum is applied to each of the vent holes 110a of the upper mold 120 through the high pressure hose 119 and the steel pipe 118, and a pulp container on the bottom surface of the upper mold 120. Is moved along the upper mold 120 in the adsorbed state. And the lower mold 210 also has the same configuration as the upper mold (120).

Next, referring to Figures 2 and 3, the operation of the conventional pulp container forming apparatus and the configuration of the peripheral portion will be described. It goes without saying that the overall operation described below is substantially continuous.

As shown in FIG. 2A, the pulp solution is filled in the upper portion of the first lower mold 110 contained in the pulp solution reservoir 101. As shown in FIG. 2B, the slider 230 moves forward (moves to the left) to the lower portion of the primary molding part 100, and the first upper mold 120 and the second upper mold 220 are spaced apart from each other. In the lowered and suspended state, each of the upper molds 120 and 220 drops the semi-finished product container attached by the suction means. At this time, the semi-finished product in the first upper mold 120 falls to the upper portion of the second lower mold 210, and the semi-finished product adsorbed on the second upper mold 220 falls to the upper plate 235. In addition, the first lower mold 110 adsorbs the pulp in the pulp solution tank and ascends above the water surface to proceed with dehydration.

Subsequently, as shown in FIG. 2C, the slider 230 is reversed (right side in the drawing) by the transfer mechanism, at which time the shower 231 and the spray 233 operate, and the water and the coating agent are firstly applied. Sprayed on the lower mold (110). At this time, the pulp solution residue remaining on the edge of the first lower mold 110 is removed by the operation of the shower 231, and after a predetermined time, the spray 233 is operated to coat the coating agent with the first mold 110. Will be sprayed on the upper side.

In addition, when the slider 230 moves backward (rightwardly in the drawing), the slider 230 is already finished and placed on the upper plate 235 (in the process of FIG. 2B, the second upper mold 220 is used). Dropping product] is pushed to the right. The product thus pushed is guided to a predetermined place while being pushed by the blowout plate 300.

Subsequently, as shown in FIG. 2D, the first lower mold 110 is raised, and the first upper mold 120 and the second upper mold 220 are lowered together. Accordingly, the first upper mold 120 is coupled to the first lower mold 110, and the second upper mold 220 is coupled to the second lower mold 210, thereby forming a pulp in the container. . That is, heat is applied while the solution remaining in the pulp is removed to form a pulp container between each mold.

Next, as shown in FIG. 2E, the upper molds 120 and 220 rise and the first lower mold 110 descends. At this time, as described above, the pulp container is formed by heat pressurization is moved to the upper state in the state of being adsorbed to the upper mold (120,220) by the adsorption means mounted on the upper mold (120,220).

Next, as shown in FIG. 2F, the pulp solution is again supplied to the first lower mold 110 lowered into the pulp solution reservoir 101, the pulp is adsorbed to the mold, and the excess pulp solution is discharged. Then, as shown in Fig. 2G, the slider 230 is transferred again, and the semi-finished product containers adsorbed to the upper molds drop downward. Thereafter, as shown in FIG. 2H, the slider 230 moves backward and performs the same operation as in FIG. 2C. In the pulp container forming apparatus shown in Figs. 1 and 2, it can be seen that the pulp container is completed through the above process shown in Fig. 3.

However, according to the conventional configuration as described above, the following disadvantages are pointed out. Each of the upper molds of the primary molding part 100 and the secondary molding part 200 performs a repeating motion in the vertical direction. Therefore, the steel pipe 118 and the high pressure hose 119 also repeats the vertical movement like the upper mold. And the second lower mold repeats the reciprocating motion in the left and right directions by the slider described above.

For this vertical motion, the high pressure hose 119 is formed of a flexible material, which is usually made of rubber or the like. The material of the high pressure hose 119 may be damaged by an external force caused by a large pressure difference between the inside and the outside. That is, the high-pressure hose 119 of a flexible material is likely to be damaged by the vertical movement repeated and the internal and external pressure difference. Damage to the high pressure hose 119 substantially disables the entire molding apparatus, and may have a fatal effect on productivity. And since the flexible high pressure hose 119 repeats the vertical movement, various disadvantages due to the movement operation of the high pressure hose may be raised. Also in the second lower mold, since the slider reciprocates in the left and right directions, there are the same disadvantages as the upper mold.

In the present invention, it is a main object of the pulp container forming apparatus to provide a vacuum apparatus having sufficient durability against repeated vertical movement.

In order to achieve the above object, it is preferable to form a vacuum pipe portion that performs a large pressure difference and vertical movement in the pulp container forming apparatus with a metal pipe, and the present invention focuses on this point.

According to the present invention for achieving the above object, in the pulp container forming apparatus comprising a plurality of upper molds to move up and down, and a lower mold to be engaged with the upper mold and a part of which moves horizontally by a slider; The upper mold is formed with a plurality of vent holes for adsorption of the pulp container; The vent is connected to a rod-type metal pipe; The rod-type metal pipe is inserted into the airtight state into a fixed cylinder-type tube and can be lifted up and down; The cylinder-type tube is characterized in that it can be connected to the device and the metal pipe for forming a vacuum.

According to an embodiment, a flange member is inserted into an open lower end of the cylinder-type tube, and a rod-type metal pipe is inserted into an inner circumference of the flange member, and a rod-type metal is inserted into inner and outer sides of the flange member. A plurality of packing members are provided for hermetic sealing with pipe and cylinder type tubes.

And the lower mold is formed with a plurality of vent holes for the adsorption of the pulp container; The vent is connected to a rod-type metal pipe having a horizontal end; The rod-type metal pipe is inserted into the hermetic cylinder tube fixedly and is movable along the lower mold in the horizontal direction; The cylinder-type tube may be connected to the device for forming a vacuum and a metal pipe.

According to the present invention, it can be seen that it is possible to form a path for applying vacuum to the upper and lower molds by using a rod-type metal pipe and a pipe, without using a flexible material such as a high pressure hose. Therefore, the durability of the entire device can be increased, and thus the reliability of the product can be increased.

Next, the present invention will be described in more detail with reference to the embodiments shown in the drawings. In the embodiment of the present invention described below, a plurality of upper molds and lower molds are respectively provided, and is applied to the lower mold to move left and right by the respective upper mold and the slider to move up and down. For convenience of illustration and description, the present invention will be described through one upper mold and a lower mold.

As shown in FIG. 4, the upper mold 120 is supported by the upper frame UF to enable vertical movement. That is, the upper mold UF is installed in the upper frame UF so that the upper mold 120 is movable up and down by the driving cylinder type tube 132 that may be configured as a tube of a hydraulic or pneumatic cylinder type. In the illustrated embodiment, the upper mold 120 is provided in pairs.

In addition, a plurality of vent holes 110a are formed in the upper mold 120 so that a vacuum is formed to adsorb the pulp container as described later. The upper portion of the upper mold 120, as in the prior art, is provided with a configuration for pressing and heating the pulp container, for example, a mold base 112 for clamping the mold and the upper portion of the mold base 112 The hot plate 114 to be installed, the heat insulating material 115 located on the upper portion of the hot plate, and the top plate 116 located on the upper portion of the heat insulating material are provided.

The vent hole 110a of the upper mold 120 is partially in communication with the inside of the upper mold, and is connected to the rod-type metal pipe 510 installed on the upper mold. The rod-type metal pipe 510 is, for example, a cylindrical pipe, and may form an air passage therein, and communicate with the plurality of vent holes 110a. Therefore, when the vacuum is applied to the rod-type metal pipe 510, the pulp container can be adsorbed from the lower portion of the upper mold 120 through the vent hole 110a.

The rod-type metal pipe 510 is provided in plural, because one upper mold 120 has a plurality of container shapes that can form a plurality of pulp containers.

The open upper end of the rod-type metal pipe 510 is inserted into the cylinder-type tube 500, and air is provided between the rod-type metal pipe 510 and the cylinder-type tube 500. It should be kept airtight so as not to leak. In order to maintain the airtight state, it is possible to install the airtight packing member on the inner circumference of the cylinder type tube 500 and / or the outer circumference of the rod type metal pipe 510.

In the illustrated embodiment, the flange member 520 is inserted into the opened lower end of the cylinder type tube 500, and the rod type metal pipe 510 is inserted into the flange member 520. As a result, the rod-type metal pipe 510 and the cylinder-type tube 500 communicate with each other. And a plurality of packing members (Pa, Pb, Pc) is inserted into the inner and outer circumference of the flange member 520, the flange member 520 and the cylinder type tube 500 and the flange member 520 and A space between the rod-type metal pipes 510 is maintained in an airtight state.

By using the packing member as described above, the rod-type metal pipe 510 is in airtight contact with the cylinder-type tube 500, and in this hermetic state, the rod-type metal pipe 510 moves up and down. You can see that it is configured to perform.

In the illustrated embodiment, the flange 520 is installed to be fixed to the upper frame UF by a screw through the bush 525.

The cylinder-type tube 500 is supported while being fixed to an upper frame UF or another external frame. The cylinder-type tube 500 which is supported in a fixed state will be connected to a vacuum forming apparatus such as a vacuum pump through the metal pipe OP installed in a fixed state again. That is, since the rod-type metal pipe 510 moves up and down with respect to the fixed cylinder-type tube 500, the cylinder-type tube and the pump can be connected by using a metal pipe, so that the overall durability is sufficient. It can be secured. In addition, the cylinder-type tube 500 and the metal pipe OP connected to the vacuum pump are always installed in a fixed state because they are all formed of a metal material. The metal pipe 510 reciprocates along the inside of the tube 500 (up and down in the illustrated embodiment) to form a vacuum so that the pulp container can be adsorbed to the lower side of the upper mold 120. It can be seen that it is configured.

Looking at the configuration of the upper mold 120 described above, while the upper mold 120 is configured to move up and down by the drive cylinder 132, the upper end of the rod-type metal pipe 510 is a cylinder As the tube 500 is moved up and down, it is possible to connect the vacuum pipe with a metal which is durable as a whole, and at the same time, other parts of the tube 500 are fixed except for the elevation of the upper mold. have.

Next, the lower mold will be described. As mentioned in the prior art, at least one of the lower molds is linearly reciprocated between at least two upper molds by a slider. That is, the lower mold 110 which is lifted up and down in the pulp solution tank may be implemented using only metal pipes without using a high pressure hose by applying the same structure as described above.

The lower mold 210 shown in FIGS. 4 and 5 corresponds to the second lower mold shown in FIG. 1. And as mentioned in the prior art, the present invention can also be applied to the pulp container forming apparatus having three upper molds and three lower molds, in this case to perform a linear reciprocating motion in the horizontal direction by the slider It can be applied to the lower mold.

As shown in FIG. 4, the lower mold 210 performs a linear reciprocating motion in a horizontal direction by the slider 230. This linear reciprocating motion is the same as mentioned in the prior art, and can be applied to any type of pulp container forming apparatus having two pairs of upper and lower molds or three pairs of upper and lower molds.

A plurality of vent holes 210a are formed in the lower mold 210, and the vent holes are for adsorbing pulp containers as described above. In addition, the vent 210a is assembled into a portion or a plurality of portions in the lower mold 210 and then connected to the rod-type metal pipe 290. The metal pipe 290 is formed in a hollow shape, it is configured to communicate with the vent hole 210a. The end 292 of the rod-type metal pipe 290 is formed to have the same direction (horizontal direction) as the moving direction of the lower mold 210. The horizontal end 292 of the rod-type metal pipe 290 is inserted into the cylinder-type tube 294 arranged in the same direction.

Naturally, the rod-type metal pipe 290 of the lower mold 210 should also be connected to the tube-type tube 294 in a hermetic state. Therefore, it is to be configured to maintain the airtight state by interposing a plurality of packings between the outer periphery of the horizontal end 292 of the rod-type metal pipe 290 and the inner periphery of the cylinder type tube 294. Therefore, it will be possible to apply the configuration between the rod-type metal pipe 510 of the upper mold 110 and the tube 500 of the cylinder type as it is. Alternatively, a different structure is applied between the horizontal end 292 of the rod-type metal pipe 290 of the lower mold 210 and the tube 294 of the cylinder type, so that the horizontal end 292 linearly moves in an airtight state. Of course, it can also be configured to do so.

The cylinder type tube 294 is also connected to a vacuum forming apparatus such as a pump capable of forming a vacuum (or low pressure), in the same manner as the upper cylinder type tube 500.

In the state shown in FIG. 5, the upper mold 120 is moved downward by the driving cylinder type tube 132, that is, the rod type metal pipe 510 is downward as much as possible from the cylinder type tube 500. At the same time, the lower mold 210 is moved to one side in the horizontal direction from the lower portion of the upper mold 120 at the same time.

The present invention uses a cylinder-type tube (500, 294) to implement a metal pipe for each part forming a vacuum to suck the pulp container through a plurality of vent holes formed in the upper mold and the lower mold, respectively. It can be seen. The present invention is not limited to the number of the upper mold or the lower mold substantially, the upper mold or lower mold that can adsorb the pulp container, any type of pulp container forming apparatus configured to perform a linear reciprocating motion Of course, it can be applied to.

Within the scope of the basic technical spirit of the present invention, it will be apparent to those skilled in the art that many other modifications are possible, and the present invention should be interpreted based on the appended claims.

According to the present invention as described above, it can be seen that the high pressure hose of the conventional flexible material can be replaced with a metal pipe. Therefore, by applying the present invention it is possible to omit unnecessary high-pressure hose movement from the external appearance at the same time, furthermore advantageous in various aspects.

Claims (3)

An apparatus for forming a pulp container including a plurality of upper molds for lifting and lowering, and a lower mold meshing with the upper mold and partially moving horizontally by a slider; The upper mold is formed with a plurality of vent holes for adsorption of the pulp container; The vent is connected to the rod-type metal pipe 510; The rod-type metal pipe is inserted in the hermetically sealed state into the cylinder-shaped tube 500 which is fixed and capable of reciprocating movement; The cylinder-type tube is a pulp container forming apparatus, characterized in that can be connected to the metal pipe and the device for forming a vacuum. The method of claim 1, wherein a flange member is inserted into an open lower end of the cylinder-type tube tube, a rod-type metal pipe is inserted into an inner circumference of the flange member, and a rod is provided inside and outside the flange member. A pulp container forming apparatus, characterized in that a plurality of packing members are installed for hermeticity with the metal pipe of the type and the tube of the cylinder type. The method of claim 1, The lower mold is formed with a plurality of vent holes for the adsorption of the pulp container; The vent is connected to a rod-type metal pipe 290 having a horizontal end 292; The rod-type metal pipe 290 is inserted into an airtight state into the fixed cylinder-type tube 294 and is movable along the lower mold in the horizontal direction; The cylinder type tube (294) is a pulp container forming apparatus, characterized in that can be connected to the metal pipe and the device for forming a vacuum.

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