KR102578575B1 - Apparatus for manufacturing pulp mold - Google Patents

Abstract

The present invention includes a storage tank 100 in which pulp solution is stored; A first supply pump 110 that supplies pulp solution to the storage tank 100; A forming tank (200) that receives and stores the pulp solution from the storage tank (100); A recovery pump 130 that recovers the pulp solution stored in the forming tank 200 and adjusts the water level of the forming tank 200; A lower mold 300 fixed inside the forming tank 200; A main mold 400 disposed on the upper part of the lower mold 300 and moving in the vertical direction; A first middle mold 500 disposed on one side of the forming tank 200 and horizontally movable between the main mold 400 and the lower mold 300; A pulp mold manufacturing apparatus including a first side mold 800 is disposed on the left side of the main mold 400 and moves in the vertical direction to be in close contact with the first middle mold 500. The present invention has the advantage of minimizing water leakage in the molding tank because it is possible to mold the rough pulp molding of the pulp mold by moving only the main mold in the vertical direction while the lower mold is fixed inside the molding tank.

Description

Pulp mold manufacturing equipment {APPARATUS FOR MANUFACTURING PULP MOLD}

The present invention relates to a pulp mold manufacturing apparatus.

In general, molded pulp products are manufactured using pulp as a raw material and are mainly used in various fields such as packaging materials and cases for shock relief, and are being widely used due to their environmental friendliness.

Looking at the method of manufacturing the pulp molding, when deinked pulp and water are mixed at an appropriate ratio, such as 1:9, to form a pulp solution and then sucked into a mold, the pulp raw materials in the form of dry matter in the pulp solution are adsorbed and fine pulp is formed. The raw materials or water are sucked in and recovered in a separate storage tank, and the rough pulp molded product adsorbed to the mold is dried of moisture using a drying furnace or a separate heat source to complete the molded pulp product.

In addition, equipment for producing the above-mentioned pulp moldings is largely divided into dry pulp molding equipment and wet pulp molding equipment. The former dry pulp molding device is used to manufacture high-precision packaging materials such as cell phone casings and packaging materials in boxes, etc., and the manufacturing cost is high, while the latter wet pulp molding device is used to manufacture egg cartons that seat multiple eggs. It is used to manufacture low-precision packaging materials such as, and the manufacturing cost is low.

Here, precision refers to the surface roughness of the pulp molded product. Pulp molded products manufactured with high precision have a smooth surface to prevent the surface of the electronic products from being damaged when packaging expensive electronic products, and pulp manufactured with low precision has a smooth surface. The purpose of molding is to package products regardless of surface roughness and to reduce manufacturing costs due to mass production.

Meanwhile, the latter pulp mold forming device includes a molding unit for forming a rough pulp molding from a pulp solution, a conveyor means provided on one side of the molding section to take over and transport the rough pulp molding formed in the molding section, and a molding device on one side of the conveyor means. It consists of a drying furnace that dries the moisture contained in the rough pulp molding material provided and handed over to the conveyor means.

And the molding part includes a storage tank that stores the pulp solution, a lower mold that receives water from the storage tank, a cylinder installed at the bottom of the lower mold to raise and lower the lower mold, and a cylinder that is provided on the top of the upper mold and slides back and forth. It consists of an upper mold.

Looking at the operating state of the conventional wet pulp mold forming device configured as described above, first, the lower mold of the molding part is immersed in the storage tank and the pulp solution is sucked, and the pulp raw material is adsorbed to the surface of the lower mold to form a rough pulp molding. do.

In addition, the lower mold to which the rough pulp molding is adsorbed is raised by the upward movement of the cylinder and meshes with the upper mold provided at the top.

And when the upper and lower molds are joined, suction force is blocked in the lower mold and suction force is generated in the upper mold, so that the rough pulp molding is transferred from the lower mold to the upper mold.

Afterwards, the upper and lower molds are separated, and at this time, the lower mold is lowered and submerged in the storage tank, and the upper mold is moved backwards and placed on the upper part of the conveyor means. The upper mold blocks the suction force and the rough pulp molding is thrown into the conveyor means.

Thereafter, the crude pulp molding is transferred to a drying furnace along the conveyor means, and the moisture contained in the crude pulp molding is dried by the drying furnace to complete the pulp molding.

However, since the pulp mold manufacturing apparatus according to the prior art requires the lower mold placed in the storage tank to be moved in the vertical direction, the structure that must move the lower mold must be placed to penetrate the storage tank, and the lower mold must be repeatedly moved over a long period of time. As it was used, there was a problem that the pulp solution stored in the water storage tank leaked from the pierced part.

Republic of Korea Registered Utility Model No. 20-0182458 Republic of Korea Registered Utility Model No. 20-0385397 Republic of Korea Registered Utility Model No. 20-0385399

The present invention was developed to solve the above-described conventional problems, and its purpose is to provide a pulp mold manufacturing device that can prevent water leakage from a storage tank or molding tank where pulp solution is stored.

The purpose of the present invention is to provide a method of manufacturing a pulp mold manufacturing device that can exclude movement of the lower mold immersed in a pulp solution.

The present invention includes a storage tank 100 in which pulp solution is stored; A first supply pump 110 that supplies pulp solution to the storage tank 100; A forming tank (200) that receives and stores the pulp solution from the storage tank (100); A recovery pump 130 that recovers the pulp solution stored in the forming tank 200 and adjusts the water level of the forming tank 200; A lower mold 300 fixed inside the forming tank 200; a main mold 400 disposed on the upper part of the lower mold 300 and moving in the vertical direction; A first middle mold 500 disposed on one side of the forming tank 200 and horizontally movable between the main mold 400 and the lower mold 300; A pulp mold manufacturing apparatus including a first side mold 800 is disposed on the left side of the main mold 400 and moves in the vertical direction to be in close contact with the first middle mold 500.

A second middle mold 600 disposed on the other side of the forming tank 200 and horizontally movable between the main mold 400 and the lower mold 300, and disposed on the right side of the main mold 400. It may include a second side mold 900 that moves in the vertical direction and is placed in close contact with the second middle mold 600.

an inlet pipe (155) providing pulp solution to the first supply pump (110); A first pipe 151 connecting the first supply pump 110 and the storage tank 100; A second pipe 152 connecting the storage tank 100 and the forming tank 200; A third pipe 153 connecting the forming tank 200 and the recovery pump 130; It may further include a fourth pipe 154 connecting the recovery pump 130 and the inlet pipe 155.

It further includes a second supply pump 120 disposed between the storage tank 100 and the forming tank 200 to flow the pulp solution of the storage tank 100 into the forming tank 200, and the second supply pump 120 A second supply pump 120 may be disposed in the pipe 152.

It further includes a frame assembly 700 supporting the forming tank 200, the main mold 400, the first middle mold 500, and the second middle mold 600, and the frame assembly 700 has upper and lower sides. A middle frame 710, a lower frame 720, and an upper frame 730 arranged to be spaced apart in each direction; A lower vertical frame 740 that connects and supports the middle frame 710 and the lower frame 720; Includes an upper vertical frame 750 that connects and supports the middle frame 710 and the upper frame 730, and the main mold 400 includes a main body 410 and the main body 410. It includes a main actuator 420 that moves in the vertical direction, and a first height 401 at which the main body 410 is in close contact with the lower mold 300 by the main actuator 420, and the main body 410 ) is the second height 402 moved upward while adsorbing the rough pulp molding of the lower mold 300, and the main body 410 is connected to the first middle mold 500 or the second middle mold 600. It can be movably placed at a third height 403 that is in close contact with.

First, the present invention has the advantage of minimizing water leakage in the molding tank because it is possible to mold the rough pulp molding of the pulp mold by moving only the main mold in the vertical direction while the lower mold is fixed inside the molding tank.

Second, the present invention allows the main mold to operate simultaneously while molding the rough pulp molding into a finished product in the first side mold, and through this, the additionally manufactured rough pulp molding can be manufactured into a finished product in the second side mold. It has the advantage of improving yield.

Third, the present invention provides a bypass pipe that can bypass the pulp solution of the recovery pump to the storage tank when the first supply pump that supplies the pulp solution fails, thereby preventing the entire device from being shut down due to the failure of the first supply pump. There is an advantage to minimizing it.

1 is a schematic configuration diagram of a pulp mold manufacturing apparatus according to a first embodiment of the present invention.
Figure 2 is a front view of the molding device shown in Figure 1.
Figure 3 is a flowchart showing a control method of the pulp mold manufacturing apparatus according to the first embodiment of the present invention.
Figure 4 is a schematic configuration diagram of a pulp mold manufacturing apparatus according to a second embodiment of the present invention.

Below, with reference to the attached drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily implement the present invention. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. In order to clearly explain the present invention in the drawings, parts that are not related to the description are omitted, and similar parts are given similar reference numerals throughout the specification.

Throughout the present specification, when a part is said to “include” a certain element, this means that it may further include other elements rather than excluding other elements, unless specifically stated to the contrary.

Figure 1 is a schematic configuration diagram of a pulp mold manufacturing apparatus according to a first embodiment of the present invention, Figure 2 is a front view of the molding apparatus shown in Figure 1, and Figure 3 is a pulp mold according to a first embodiment of the present invention. This is a flowchart showing the control method of the manufacturing device.

The pulp mold manufacturing apparatus according to this embodiment includes a storage tank 100 in which the pulp solution is stored, a first supply pump 110 for supplying the pulp solution to the storage tank 100, and the storage tank 100. A forming tank 200 that receives and stores the pulp solution, a recovery pump 130 that recovers the pulp solution stored in the forming tank 200 and adjusts the water level of the forming tank 200, and the forming tank ( 200) a lower mold 300 fixed inside, a main mold 400 disposed on the upper part of the lower mold 300 and moved in the vertical direction, and one side of the forming tank 200 (in this embodiment) a first middle mold 500 disposed on the left side and horizontally movable between the main mold 400 and the lower mold 300, and on the other side (right side in this embodiment) of the forming tank 200. A second middle mold 600 is disposed and horizontally movable between the main mold 400 and the lower mold 300, and is disposed on the left side of the main mold 400 and moves in the vertical direction to form the second middle mold 600. 1 A first side mold 800 arranged to be in close contact with the middle mold 500, disposed on the right side of the main mold 400, and moved in the vertical direction to be in close contact with the second middle mold 600. It includes a second side mold 900 that is disposed.

A second supply pump 120 may be further disposed between the storage tank 100 and the forming tank 200. The second supply pump 120 supplies the pulp solution from the storage tank 100 to the forming tank 200 to adjust the water level 201 of the forming tank 200.

When the second supply pump 120 operates, the water level 201 of the forming tank 200 rises from the first water level to the second water level.

When the recovery pump 130 operates, the water level in the forming tank 200 is lowered to the first water level.

When a water level sensor is placed inside the forming tank 200 to detect the first and second water levels and operate the recovery pump 130, it takes time to detect the water level, which may reduce production yield.

In this embodiment, the recovery pump 130 recovers a fixed amount of the “recovered amount” of the pulp solution stored in the forming tank 200, thereby improving the recovery speed of the pulp solution and increasing the production yield.

Therefore, the second supply pump 120 according to this embodiment also supplies a fixed amount of pulp solution from the forming tank 200. The pulp supply amount from the second supply pump 120 is defined as the “supply amount”, and the pulp recovery amount from the recovery pump 130 is defined as the “recovery amount.”

It can be defined as “supply amount = recovery amount + molding amount”.

The “molding amount” is the amount of pulp solution required to produce a pulp mold once and may be the capacity contained in the lower mold 300.

That is, excluding the amount required for one-time production of the product, the recovery pump 130 can recover the pulp solution and return it to the first water level.

The pulp mold manufacturing apparatus includes an inlet pipe 155 that provides pulp solution to the first supply pump 110, and a first pipe 151 connecting the first supply pump 110 and the storage tank 100. ), a second pipe 152 connecting the storage tank 100 and the forming tank 200, a third pipe 153 connecting the forming tank 200 and the recovery pump 130, and It further includes a fourth pipe 154 connecting the recovery pump 130 and the inlet pipe 155.

The second supply pump 120 is disposed in the second pipe 152.

The first supply pump 110 is disposed between the first pipe 151 and the inlet pipe 155.

A water level sensor 160 is disposed inside the storage tank 100, and the water level sensor 160 detects the water level 101 of the pulp solution.

The first supply pump 110 operates according to the signal from the water level sensor 160.

The pulp mold manufacturing apparatus may further include an air pump 140 that supplies compressed air to the storage tank 100.

The air discharge pipe 141 of the air pump 140 extends to the lower part of the storage tank 100 and is disposed to be submerged in the water level of the pulp solution.

Therefore, when the air pump 140 operates, the pulp solution in the storage tank 100 can flow, thereby preventing the pulp from accumulating on the lower side, and through this, the second supply pump 120 The discharged pulp solution can be maintained uniformly.

The pulp mold manufacturing apparatus further includes a frame assembly 700 supporting the molding tank 200, the main mold 400, the first middle mold 500, and the second middle mold 600.

The lower mold 300 is placed at a height between the first and second water levels.

That is, when the second supply pump 120 is operated, it is submerged in the pulp solution, and when the recovery pump 130 is operated, it is exposed above the water level of the pulp solution.

The frame assembly 700 is supported by connecting a middle frame 710, a lower frame 720, and an upper frame 730 arranged to be spaced apart in the vertical direction, and the middle frame 710 and the lower frame 720. It includes a lower vertical frame 740, and an upper vertical frame 750 that connects and supports the middle frame 710 and the upper frame 730.

A plurality of the middle frames 710 may be arranged spaced apart in the front and rear directions, and when distinction is necessary, they are referred to as a first middle frame and a second middle frame.

The lower frame 720 may be arranged in plural numbers, spaced apart in the front and rear directions, and if distinction is necessary, they are referred to as a first lower frame and a second lower frame.

A plurality of the upper frames 730 may be arranged spaced apart in the front and rear directions, and when distinction is necessary, they are referred to as a first upper frame and a second upper frame.

A plurality of the lower vertical frames 740 may be arranged to be spaced apart in the left and right directions.

The lower vertical frame 740 includes a first lower vertical frame 741 disposed on the left side of the forming tank 200, and a second lower vertical frame 742 disposed on the right side of the forming tank 200. , a third lower vertical frame 743 spaced apart from the left side of the first lower vertical frame 741, and a fourth lower vertical frame 744 spaced apart from the right side of the second lower vertical frame 742. ) includes.

A plurality of the upper vertical frames 750 may be arranged to be spaced apart in the left and right directions.

The upper vertical frame 750 includes a first upper vertical frame 751 disposed on the left side of the upper mold assembly, a second upper vertical frame 752 disposed on the right side of the upper mold assembly, and the first It includes a third upper vertical frame 753 spaced apart from the left side of the upper vertical frame 751, and a fourth upper vertical frame 754 spaced apart from the right side of the second upper vertical frame 752. .

The lower mold 300 remains fixed inside the molding tank 200. The lower mold 300 is disposed below the middle frame 710.

The main mold 400, the first side mold 800, and the second side mold 900 move the mold in the vertical direction. The main mold 400, the first side mold 800, and the second side mold 900 are disposed between the middle frame 710 and the upper frame 730.

The first middle mold 500 and the second middle mold 600 move the mold in the horizontal direction. The first middle mold 500 and the second middle mold 600 are disposed between the middle frame 710 and the upper frame 730.

The main mold 400 includes a main body 410 and a main actuator 420 that moves the main body 410 in the vertical direction.

Based on the left and right direction, the main mold 400 is disposed between the first upper vertical frame 751 and the second upper vertical frame 752.

The main actuator 420 includes a main hydraulic cylinder 422 and a main piston 424.

The main actuator 420 is installed and supported on the upper frame 730.

Based on the front-rear direction, the main hydraulic cylinder 422 and the main piston 424 are disposed between the first upper frame and the second upper frame, and the main piston 424 moves in the vertical direction.

The main body 410 is coupled and disposed at the lower end of the main piston 424.

When the main actuator 420 operates, the main body 410 may pass through the middle frame 710 and come into close contact with the lower mold 300 disposed inside the molding tank 200.

The shape of the pulp mold to be formed may be engraved or embossed on the upper side 301 of the lower mold 300. A shape corresponding to the pulp mold shape of the lower mold 300 may be formed in a positive or negative manner on the lower side of the main body 410.

In this embodiment, a pulp mold shape is formed in a negative manner on the upper side 301 of the lower mold 300, and a pulp mold shape is formed in an embossed manner on the lower side 411 of the main body 410.

The first water level is formed lower than the upper side 301 of the lower mold 300, and the second water level is formed higher than the upper side 301 of the lower mold 300.

When the pulp solution rises to the second water level, the lower mold 300 sucks the pulp solution from the forming tank 200 and the pulp raw material is adsorbed to the upper side 301 of the lower mold to form a rough pulp molding. .

The main mold 400 may be an air compressor (not shown) that creates negative pressure of air through the lower side of the main body 410, and can adsorb and fix the rough pulp molding of the lower mold 300. .

By operating the main actuator 420, the rough pulp molding can be moved upward and positioned while adsorbed on the lower side 411 of the main body 410.

In this embodiment, the main body 410 can be positioned at at least four heights.

The height at which the main body 410 is in close contact with the lower mold 300 is defined as the first height 401, and the height to which the main body 410 moves upward while adsorbing the rough pulp molding is defined as the first height 401. 2 is defined as height 402, and the height at which the main body 410 is in close contact with the first middle mold 500 or the second middle mold 600 is defined as third height 403.

The first height 401 is the lowest, the second height 402 is the highest, and the third height 403 is located between the first height 401 and the second height 402, and The fourth height 404 is located higher than the third height 403.

They are arranged in a first height 401, a third height 403, a fourth height 404, and a second height 402 from the bottom to the top.

The first height 401 is formed lower than the middle frame 710 and is located within the height of the forming tank 200.

The third height 403 and the second height 402 are disposed between the upper frame 730 and the middle frame 710.

The first side mold 800 includes a first side body 810 and a first side actuator 820 that moves the first side body 810 in the vertical direction.

Based on the left and right direction, the first side mold 800 is disposed between the first upper vertical frame 751 and the third upper vertical frame 753.

The first side actuator 820 includes a first side hydraulic cylinder 822 and a first side piston 824.

The first side actuator 820 is installed and supported on the upper frame 730.

Based on the front-rear direction, the first side hydraulic cylinder 822 and the first side piston 824 are disposed between the first upper frame and the second upper frame.

The first side piston 824 moves in the vertical direction.

The first side body 810 is coupled and disposed at the lower end of the first side piston 824.

The first side body 810 may have the same shape as the main body 410.

When the first side actuator 820 is operated, the first side body 810 is in close contact with the first middle mold 500, so that the rough pulp molding can be molded into a finished product.

The second side mold 900 includes a second side body 910 and a second side actuator 920 that moves the second side body 910 in the vertical direction.

Based on the left and right direction, the second side mold 900 is disposed between the second upper vertical frame 752 and the fourth upper vertical frame 754.

The second side actuator 920 includes a second side hydraulic cylinder 922 and a second side piston 924.

The second side actuator 920 is installed and supported on the upper frame 730.

Based on the front-rear direction, the second side hydraulic cylinder 922 and the second side piston 924 are disposed between the first upper frame and the second upper frame.

The second side piston 924 moves in the vertical direction.

The second side body 910 is coupled and disposed at the lower end of the second side piston 924.

The second side body 910 may have the same shape as the main body 410.

When the second side actuator 920 is operated, the second side body 910 is in close contact with the second middle mold 600, so that the rough pulp molding can be molded into a finished product.

The first middle mold 500 is disposed on the first middle bed 550 and a first middle bed 550 that moves in the left and right directions along the middle frame 710, and the first side body ( 810) or a first middle body 510 in close contact with the main body 410, and a first middle actuator (not shown) that moves the first middle body 510 in the left and right directions.

The first middle actuator includes a first middle hydraulic cylinder (not shown) and a first middle piston (not shown). The first middle piston is arranged in a horizontal direction, and the first middle bed 550 is coupled to the end (right end in this embodiment) of the first middle piston.

When the first middle actuator operates, the first middle bed 550 may move back and forth in the left and right horizontal directions.

The first middle body 510 may be located below the first side body 810. And during the first operation of the first middle actuator, the first middle body 510 may pass through the first upper vertical frame 751 and be positioned below the main body 410.

During the second operation of the first middle actuator, the first middle body 510 may pass through the first upper vertical frame 751 again and return to the lower part of the first side body 810.

The first middle body 510 is disposed inside (right side in this embodiment) the first middle bed 550. A first middle holder 530 on which the finished product of the first middle body 510 is moved may be further disposed on the outside (left side in this embodiment) of the first middle bed 550.

In order to quickly dry the rough pulp molding mounted on the first middle body 510, a heating wire (not shown) is disposed on at least one of the first middle body 510 and the first side body 810. and power can be applied to the heating wire to heat the first middle body 510 or the first side body 810.

The rough pulp molding can be quickly dried through the heated first middle body 510 or first side body 810.

The second middle mold 600 is disposed on the second middle bed 650 and a second middle bed 650 that moves in the left and right directions along the middle frame 710, and the second side body ( 910) or a second middle body 610 in close contact with the main body 410, and a second middle actuator (not shown) that moves the second middle body 610 in the left and right directions.

The second middle actuator includes a second middle hydraulic cylinder (not shown) and a second middle piston (not shown). The second middle piston is arranged in the horizontal direction, and the second middle bed 550 is coupled to the end (left end in this embodiment) of the second middle piston.

When the second middle actuator operates, the second middle bed 650 may move back and forth in the left and right horizontal directions.

The second middle body 610 may be located below the second side body 910. And during the first operation of the second middle actuator, the second middle body 610 may pass through the second upper vertical frame 752 and be positioned below the main body 410.

During the second operation of the second middle actuator, the second middle body 610 may pass through the second upper vertical frame 752 again and return to the lower part of the second side body 910.

The second middle body 610 is disposed inside (left side in this embodiment) the second middle bed 550. A second middle holder 630 on which the finished product of the second middle body 610 is moved may be further disposed outside (right side in this embodiment) of the second middle bed 650.

In order to quickly dry the rough pulp molding mounted on the second middle body 610, a heating wire (not shown) is disposed on at least one of the second middle body 610 and the second side body 910. The second middle body 610 or the second side body 910 can be heated by applying power to the heating wire.

The rough pulp molding can be quickly dried through the heated second middle body 610 or second side body 910.

Hereinafter, the control method of the pulp mold manufacturing apparatus according to this embodiment will be described.

The control method of the pulp mold manufacturing apparatus according to this embodiment includes the steps of raising the water level of the molding tank 200 from the first water level to the second water level (S10), and after a predetermined time has elapsed after the step S10, A step of lowering the water level of the forming tank 200 to the first water level (S20), and after step S20, the main body 410 is brought into close contact with the upper side 301 of the lower mold 300 to a first height ( A step of lowering to 401 (S30), and after a predetermined time has elapsed after step S30, a step of raising the main body 410 to the second height 402 while adsorbing and fixing the rough pulp molding. (S40) and, after step S40, horizontally moving the first middle body 510 to the lower part of the main body 410 (S50), and after step S50, the main body 410 is moved to the lower part of the main body 410. A step (S60) of lowering the main body 410 to a third height 403 so as to come into close contact with the upper side of the first middle body 510, and after the step S60, adsorbing and fixing the main body 410. A step of releasing the adsorption fixation of the rough pulp molding (S70), and after step S70, a step of raising the main body 410 to the second height 402 (S80), and after step S80 , a step of returning the first middle body 510 moved to the lower part of the main body 410 to its original position (S90), and after the step S90, the first middle body 510 taking over the rough pulp molding ) lowering the first side body 810 disposed at the upper part to the third height 403 (S100), and returning the lowered first side body 810 to its original position after the step S100. It includes a step (S110).

After step S100, the step of drying the rough pulp molding by operating a heating wire disposed on at least one of the first middle body 510 and the first side body 810 may be further included.

The control method of the pulp mold manufacturing apparatus according to this embodiment includes the step of raising the water level of the molding tank 200 from the first water level to the second water level after the step S40 in order to improve the production yield of the finished product (S110). ) and the step (S120) of lowering the water level of the forming tank 200 to the first water level are preferably performed simultaneously after a predetermined time has elapsed after step S10.

Therefore, while steps S50 to S80 are in progress, sufficient time can be secured to form a rough pulp molding on the upper side 301 of the lower mold 300 by sucking the pulp solution through the lower mold 300. .

And while the steps S90 and S110 in which the rough pulp molding is moved in the work line of the main body 410 are in progress, the control method of the pulp mold manufacturing apparatus according to this embodiment is to move the main body 410 to the lower part. A step (S130) of lowering the mold 300 to a first height 401 in close contact with the upper side 301, and after a predetermined time has elapsed after step S130, the main body 410 is A step (S140) of raising the molded product to the second height 402 while adsorbing and fixing it, and horizontally moving the second middle body 610 to the lower part of the main body 410 after step S140 ( S150) and, after step S150, lowering the main body 410 to the third height 403 so that the main body 410 is in close contact with the upper side of the second middle body 610 (S160). And, after the step S160, a step of releasing the adsorption fixation of the rough pulp molding adsorbed and fixed to the main body 410 (S170), and after the step S170, the main body 410 is adjusted to the second height. A step of raising to (402) (S180), and after step S180, a step of returning the second middle body 610, which has been moved to the lower part of the main body 410, to its original position (S190), and the step S190. Thereafter, lowering the second side body 910 disposed on the upper part of the second middle body 610, which has taken over the rough pulp molding, to the third height 403 (S200), and S200 It includes a step (S210) of returning the second side body 910, which was lowered after the step, to its original position.

Through this control method, the control method of the pulp mold manufacturing apparatus according to this embodiment can minimize the stop time of the main mold 400 and the lower mold 300, thereby improving the production yield of finished products. There is a characteristic.

Figure 4 is a schematic configuration diagram of a pulp mold manufacturing apparatus according to a second embodiment of the present invention.

The pulp mold manufacturing apparatus according to this embodiment includes a bypass pipe 156 connecting the fourth pipe 154 and the first pipe 151, and an opening/closing valve 157 that opens and closes the bypass pipe 156. ) is disposed, so that even in the event of a failure of the first supply pump 110, it can continue to operate for the time that the pulp solution stored in the storage tank 100 is consumed.

The pulp mold manufacturing apparatus according to the first embodiment provides the pulp solution discharged from the recovery pump 130 to the inlet side of the first supply pump 110, so that when the first supply pump 110 fails, the pulp solution is immediately manufactured. There is a problem where the entire device stops working.

When the first supply pump 110 is normal, the opening/closing valve 157 is kept closed.

In the pulp mold manufacturing apparatus according to this embodiment, when the first supply pump 110 malfunctions, the opening/closing valve 157 is opened, and the pulp solution discharged from the recovery pump 130 flows into the bypass pipe 156. It can be recovered to the storage tank 100 through .

The pulp mold manufacturing device according to this embodiment can continue to operate the device until the pulp solution stored in the storage tank 100 is consumed, and through this, time for repair or replacement of the first supply pump 110 can be secured. there is.

When repairing or replacing the first supply pump 110, a check valve 158 is further disposed to prevent the pulp solution supplied through the bypass pipe 156 from flowing into the first supply pump 110. It can be.

One end (156a) of the bypass pipe 156 is connected to the fourth pipe 154, and the other end (156b) is connected to the first pipe 151.

The check valve 158 is disposed between the other end 156b and the first supply pump 110, and prevents the pulp solution from being discharged toward the first supply pump 110 even when the on-off valve 157 is opened. This can prevent the entire device from being downed for repair or replacement of the first supply pump 110.

Hereinafter, since the remaining configuration is similar to the first embodiment, detailed description will be omitted.

In the detailed description of the present invention, specific embodiments have been described, but of course, various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined not only by the scope of the patent claims described later, but also by the scope of this patent claim and equivalents.

100: storage tank 110: first supply pump
120: second supply pump 130: recovery pump
140: air pump 200: forming tank
201: water level 300: lower mold
400: Main mold 500: 1st middle mold
600: 2nd middle mold 700: Frame assembly
800: 1st side mold 900: 2nd side mold

Claims (5)

A storage tank (100) in which the pulp solution is stored;
A first supply pump 110 that supplies pulp solution to the storage tank 100;
A forming tank (200) that receives and stores the pulp solution from the storage tank (100);
A recovery pump 130 that recovers the pulp solution stored in the forming tank 200 and adjusts the water level of the forming tank 200;
A lower mold 300 fixed inside the forming tank 200;
A main mold 400 disposed on the upper part of the lower mold 300 and moving in the vertical direction;
A first middle mold 500 disposed on one side of the forming tank 200 and horizontally movable between the main mold 400 and the lower mold 300;
A first side mold 800 disposed on the left side of the main mold 400 and moved in the vertical direction to be in close contact with the first middle mold 500;
a second middle mold 600 disposed on the other side of the forming tank 200 and horizontally movable between the main mold 400 and the lower mold 300;
a second side mold 900 disposed on the right side of the main mold 400 and moved in the vertical direction to be in close contact with the second middle mold 600;
A frame assembly 700 supporting the forming tank 200, the main mold 400, the first middle mold 500, and the second middle mold 600;
an inlet pipe (155) providing pulp solution to the first supply pump (110);
A first pipe 151 connecting the first supply pump 110 and the storage tank 100;
A second pipe 152 connecting the storage tank 100 and the forming tank 200;
A third pipe 153 connecting the forming tank 200 and the recovery pump 130;
A fourth pipe (154) connecting the recovery pump (130) and the inlet pipe (155);
A second supply pump 120 disposed between the storage tank 100 and the forming tank 200 to flow the pulp solution of the storage tank 100 into the forming tank 200;
a bypass pipe 156 connecting the fourth pipe 154 and the first pipe 151; and
It includes an opening/closing valve (157) that opens and closes the bypass pipe (156),
The frame assembly 700 is,
A middle frame 710, a lower frame 720, and an upper frame 730 arranged to be spaced apart in the vertical direction;
A lower vertical frame 740 that connects and supports the middle frame 710 and the lower frame 720; It includes an upper vertical frame 750 that connects and supports the middle frame 710 and the upper frame 730,
The main mold 400 includes a main body 410 and a main actuator 420 that moves the main body 410 in the vertical direction,
A first height 401 at which the main body 410 is in close contact with the lower mold 300 by the main actuator 420,
A second height 402 where the main body 410 is moved upward while adsorbing the rough pulp molding of the lower mold 300, and
The main body 410 is movably disposed at a third height 403 in close contact with the first middle mold 500 or the second middle mold 600,
A pulp mold manufacturing apparatus in which the second supply pump (120) is disposed in the second pipe (152). delete delete delete delete

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