KR20010044558A - Corrugated plastic board box and it's device and method of making - Google Patents

Abstract

PURPOSE: A synthetic resin corrugated box has improved appearance, is strong in structure and recyclable without removing rivets or staples. CONSTITUTION: A corrugated box manufacturing device comprises a V-shape fusing device and a plane fusing device(40). The V-shape fusing device comprises a lower metal mold and an upper metal mold. The lower metal mold is where the box material is placed and has a suction hole to fix the material. The upper metal mold is placed above the lower metal mold and vertically moves to push and fuse the material fixed on the lower metal mold by the heat of a heater built in to form uncut v-shaped groove. The plane fusing device(40) comprises a fusion metal mold(52) and a pair of the an upper and a lower metal molds(54, 56). The fusion metal mold(52) folds the v-shaped groove perpendicularly and fuses the both sides of the v-shaped groove to form a square box and contacts with the upper part and the lower part of the doubled surface simultaneously to partly melt the doubled surface by the heat of a heater(51) built in. The upper and the lower metal molds(54, 56) make the doubled surface adhere to each other and fuses planely.

Description

Synthetic resin corrugated box, its manufacturing apparatus and manufacturing method thereof {CORRUGATED PLASTIC BOARD BOX AND IT'S DEVICE AND METHOD OF MAKING}

The present invention relates to a synthetic resin corrugated box, a manufacturing apparatus and a manufacturing method thereof, and in detail, after forming the V-shaped grooves in the V-type welding machine and fold at a right angle to the edges of the synthetic resin cardboard box to fusion to both sides of the grooves The overlapped areas are planar fusion bonded to each other in a planar fusion machine to provide a synthetic resin cardboard box with a beautiful appearance and structurally strong.

The conventional synthetic resin corrugated box can be folded by forming a hinge portion 2 to be folded by compressing the cardboard box original plate 1 thinly on both sides by a high frequency processing machine as shown in FIG. 2, the overlapping portions were to maintain the state of mutual attachment by placing the rivets 3 and the stapler 4 of the metal material at regular intervals while the original plates 1 overlap each other as shown in FIG. There is a problem that the finished box is not structurally solid, such as stiffness and lingering, and the cumbersome problem that the rivets or staplers of the metal must be removed manually by hand.

The present invention has been made to solve the above-mentioned conventional problems, the object of the present invention is to provide a synthetic resin corrugated cardboard box that is structurally robust and beautiful in appearance.

The present invention also provides a device suitable for manufacturing the above-described cardboard box and a method of manufacturing the cardboard box using the device.

In order to achieve the above object, the present invention forms a V-shaped groove at a position corresponding to the edge of the box so that both sides of the V-shaped groove are mutually fused at right angles, and the overlapping portions of the box are mutually plane-fused in the butt state. It provides a synthetic resin cardboard box.

According to the present invention, the upper surface of the corrugated cardboard plate is fixed to the lower mold while the synthetic resin material corrugated disk is raised and the lower mold formed with a cushion hole to be fixed at an arbitrary position, and the vertical lifting operation is made in the upper portion of the lower mold A V-type fusion apparatus comprising an upper mold which presses to form a V-shaped groove which is not cut while melting by heat of a built-in heater; Fold the V-shaped grooves of the original plate passed through the V-type fusion machine at right angles to fuse the two sides of the V-shaped grooves together to form a rectangular box shape, and then simultaneously contact the upper and lower overlapping surfaces of the original plate by the heat of the built-in heater. Synthetic resin corrugated cardboard box comprising a fusion mold for partially melting the overlapping surface and a pair of top and bottom molds for fusion bonding of the overlapping surfaces of the upper and lower surfaces melted by the fusion mold to each other for flat welding. A manufacturing apparatus is provided.

Method for producing a cardboard box in the present invention is a synthetic resin corrugated disc to form a V-shaped groove is not cut by the V-type fusion machine of claim 2, by folding the V-shaped groove at a right angle to mutually fused both sides of the V-shaped groove Steps; By fusion step of the four places corresponding to the edge of the box by the step to form a rectangular box shape and the upper and lower overlapping surface adjacent to the border is made by the step of plane fusion in the planar fusion machine of claim 2.

1 is a cross-sectional view showing the process of processing the edge portion of a conventional synthetic resin cardboard box;

Figure 2 is a cross-sectional view showing two examples of the overlapped processing state of the conventional synthetic resin cardboard box,

3 is a perspective view of a cardboard box according to the present invention,

4 is a developed view of a cardboard box according to the present invention,

Figure 5 is a cross-sectional view showing the V-type fusion process of the cardboard box according to the present invention,

6 is a cross-sectional view showing a plane welding process of the cardboard box according to the present invention,

7 is a front view showing the V-type fusion machine structure of the cardboard box manufacturing apparatus according to the present invention,

8 is a side view showing the structure of the V-type welding machine of the cardboard box manufacturing apparatus according to the present invention,

9 is a front view showing a planar fusion machine structure of the cardboard box manufacturing apparatus according to the present invention,

Figure 10 is a side view showing a planar fusion machine structure of the cardboard box manufacturing apparatus according to the present invention.

* Explanation of symbols for main parts of the drawings

10: box 10 ': negative

11: bottom plate 12, 13, 14, 15: side plate

16: top plate 14a, 14b, 15a, 15b: extension plate

16a, 16b, 16c: rim plate 20: V-type welding machine

21: suction hole 22: cooling water hole

23: lower mold 24: heater

25: upper mold 26: mold base

27: pneumatic cylinder 28: spring

29: cushion bar 40: flat welding machine

51: heater 52: fusion mold

54: upper mold 56: lower mold

60: pneumatic cylinder 61: cushion bar

62: cushion bar bracket 63, 64: spring

65: cushion bar A: V cutting and fusion

B: V cutting part C: Flat welding part

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Figure 3 is a perspective view of a cardboard box according to an embodiment of the present invention, Figure 4 is a development of a cardboard box according to an embodiment of the present invention, Figure 5 shows a rim processing process of the cardboard box according to the invention 6 is a cross-sectional view showing a laminated portion processing state of the cardboard box according to the present invention.

3 to 6, the cardboard box 10 of the present invention is the top plate extending from the bottom plate 11 and side plates (12, 13, 14, 15) and one side plate (15) It consists of (16), the boundary between the bottom plate 11 and the side plates (12, 13, 14, 15) extending from the bottom plate 11 is a V-shaped groove is formed and folded at right angles to each other V A cutting and fusion portion (A) is formed, and the V-cutting portion (B) is formed to form a V-shaped groove between one side plate (15) and the upper plate (16) to open and close the upper plate (16). It is.

In addition, extension plates 14a, 14b, 15a, and 15b are formed on both sides of the side plates 14 and 15 of the box, and V-cutting portions B are formed at the boundaries thereof, so that the extension plates 14a and 14b are formed. Plane fusion C is made to the other side plates 12 and 13, respectively.

In addition, outside the upper plate 16, the edge plates 16a, 16b, and 16c are formed to extend, and V-cut grooves are formed at the boundary thereof, and V-cutting and fusion portions A are formed to be folded and fused at right angles. The completed box form as shown in the figure is achieved.

5 is a cross-sectional view showing a V cutting and fusion process of the cardboard box according to the present invention, Figure 6 is a cross-sectional view showing a plane welding process of the cardboard box according to the present invention.

As shown in FIG. 5, the present invention provides a V-shaped groove, that is, a V-cutting portion B that is not cut by a V-type welder on one side of a portion folded at right angles in a cardboard box, both sides of the V-shaped grooves ( F) That is, when the molten portion is folded at right angles before hardening, both sides F of the V-cutting portions B formed on the disc 10 'are fused to each other, thereby making a rigid and accurate right angle state.

In addition, the V-cutting portion B may be left in a planar state without being fused to each other, and both sides of the V-cutting portion may be cooled and hardened, respectively, and then may be folded. It is applied to the machining between the side plate 15 and the top plate 16.

As shown in FIG. 6, in the present invention, the planar fusion shows a process of fusion of the C portion of the box shown in FIGS. 3 and 4. If the upper and lower discs are pressed so as to be the original disc thickness by pressing them in a state of being partially melted (F) using a fusion mold in the state of being fixed between the upper and lower molds, the flat fusion unit (C) Also fusion molded to the original thickness of the disc.

Corrugated box of the present invention is the bottom plate and the side plate is fused at right angles and the side edge of the box is made of a flat fusion, the box maintains a solid structure in a hexahedral state, regenerating because it does not take a rivet or stapler of the metal as before There is no need for a separate separation process.

7 is a front view showing the structure of the V-type fusion machine of the cardboard box manufacturing apparatus according to the present invention, Figure 8 is a side view showing the structure of the V-type fusion machine of the cardboard box manufacturing apparatus according to the present invention.

As shown, the V-type fusion machine 20 according to the present invention includes a lower mold 23 in which a cushion hole 21 is formed so that the synthetic resin corrugated disc can be raised and fixed at an arbitrary position, and the lower mold 23. The upper mold 25 is formed at the upper portion of the upper mold 25 to form a V-shaped groove that is not cut while melting by the heat of the built-in heater 24 by pressing the upper portion of the corrugated cardboard fixed on the lower mold 23 while the vertical lifting operation is performed. Consists of

The lower mold 23 has a cooling water hole 22 for supplying cooling water for cooling the mold, and the upper mold 25 is fixed to the mold base 26 by a hydraulic or pneumatic cylinder 27. The lifting and lowering drive is performed vertically, and a cushion bar 29 fitted with a spring 28 is provided between the mold base 26 and the pneumatic cylinder 27 to provide an appropriate cushion.

In the drawings, reference numerals 30 and 31 denote frames, 32 denote bearing housings, and 33 denote guide bars.

9 is a front view showing a planar fusion machine structure of the cardboard box manufacturing apparatus according to the present invention, Figure 10 is a side view showing a planar fusion machine structure of the cardboard box manufacturing apparatus according to the present invention.

The planar fusion machine 40 of the present invention contacts the upper and lower overlapping surfaces of the disc at the same time to the fusion mold 52 for partially melting the overlapping surface by the heat of the built-in heater 51 and the fusion mold 52. It comprises a pair of upper and lower molds (54, 56) for making the upper and lower surfaces are in close contact with the overlapping surface of the molten disk by fusion.

The lower mold 56 maintains a fixed state, the upper mold 54 is configured to be vertically elevated by the pneumatic cylinder 53, the fusion mold 52 is perpendicular to the horizontal pneumatic cylinder 52a, respectively The pneumatic cylinder 52b is movable in the horizontal direction and the vertical direction.

The upper and lower molds 54 and 56 have adsorption holes 55 and 57 for fixing the box disc and cooling water holes 58 and 59 for cooling the mold, respectively, and the fusion mold 52 is a heater. 51 is built in.

The upper mold 54 is connected to the pneumatic cylinder 53 by a cushion bar 61 so as to have a proper cushion when descending, the fusion mold 52, the spring (upper and lower) of the cushion bar bracket 62, 63 and 64 are connected to the vertical pneumatic cylinder 53 by the installed cushion bar 65 so as to be in contact with the box discs adsorbed on the upper and lower molds 54 and 56 in an appropriate cushioning state.

The cardboard box manufacturing method of the present invention using the above-described cardboard box forming apparatus will be described.

In the embodiment of the present invention, only the manufacturing process of the box shown in FIG. 3 and FIG. 4 will be described. However, the present invention is not limited thereto, and the principles of the present invention are also applied to manufacturing the box in various development states. can do.

First, the synthetic resin corrugated disc 10 'is manufactured in a separate device from the present invention so as to be developed in a desired box shape, and this is necessary in the V-type fusion machine 20, that is, the bottom plate 11 of the box. Boundary portion between the side plates (12, 13, 14, 15) extending from, between one side plate 15 and the top plate 16, the extension plate (14a, 14b) formed on both sides of the side plates (14, 15) It is processed so that the V-shaped grooves are formed at the boundary between the edges 15a and 15b and the edges of the edge plates 16a, 16b and 16c formed outside the upper plate 16.

At this time, the V-shape formed on the boundary between the side plate (12, 13, 14, 15) extending from the bottom plate 11 and the edge plate (16a, 16b, 16c) formed on the outside of the upper plate 16 The grooves are folded at right angles to each other and fused together before both sides of the V-shaped groove are hardened.

Next, a planar fusion machine is used to fuse the extension plates 14a, 14b, 15a, and 15b of both side plates 14 and 15 to the other side plates 12 and 13, wherein the extension plates to which the mutual fusion is to be made (14a, 14b or 15a, 15b) and side plates 12 or 13 in the state of adsorbing the upper and lower molds 54 and 56 of the flat welding machine 40, respectively, and spread the fusion mold 52 therebetween. One side of the original plates, i.e., the extension plates 14a, 14b, 15a, and 15b, and one side of the side plates 12 and 13, which are horizontally entered and attached to the upper and lower molds 54 and 56, has a suitable temperature. Is partially melted at about 180 ° C. Then, when the fusion mold 52 is horizontally retracted while the upper mold 54 is slightly lifted up and the upper mold 54 is lowered again, the original plates that are respectively adsorbed to the upper and lower molds 54 and 56, The extension plate and the side plate is pressed in the molten state is to be mutually flat fusion.

By repeating the above V-cutting and planar fusion to form a completed box form as shown in FIG.

As described above, the present invention has the effect of providing a box that is beautiful, structurally strong, and recyclable as it is, without going through the cumbersome process of removing the rivets or staplers even after recycling. .

Claims (3)

At the position corresponding to the edge of the box, a V-shaped groove is formed inside the synthetic resin material, characterized in that both sides of the V-shaped grooves are mutually fused at right angles to each other, and the overlapping portions of the boxes are plane-fused in an overlapping state. Corrugated box. Synthetic Resin Corrugated Cardboard The lower mold is formed with a suction hole so that it can be fixed at any position, and the upper part of the lower mold is vertically lifted by pressing the upper part of the corrugated cardboard fixed to the lower mold. A V-type fusion machine comprising an upper mold which forms a V-shaped groove which is not cut while melting by heat of the heater; Fold the V-shaped grooves of the original plate passed through the V-type fusion machine at right angles to fuse the two sides of the V-shaped grooves together to form a rectangular box shape, and then simultaneously contact the upper and lower overlapping surfaces of the original plate by the heat of the built-in heater. A fusion mold for partially melting the overlapping surface, and a pair of upper and lower molds for fusion bonding between the overlapping surfaces in which the upper and lower surfaces are melted by the fusion mold, and for flat welding. An apparatus for producing a synthetic resin corrugated box. Forming a V-shaped groove not cut by the synthetic resin corrugated disc in a V-type fusion machine, and folding the V-shaped groove at a right angle to mutually fusion of both sides of the V-shaped groove; A method of manufacturing a synthetic resin corrugated cardboard box comprising the step of plane welding the overlapping portion of the box in a plane welding machine.