WO2006049418A1

WO2006049418A1 - The connect structure of jaw plate and dome unit

Info

Publication number: WO2006049418A1
Application number: PCT/KR2005/003654
Authority: WO
Inventors: Jun Jae Lee
Original assignee: Jaepack Co., Ltd.
Priority date: 2004-11-05
Filing date: 2005-11-02
Publication date: 2006-05-11
Also published as: KR100629251B1; KR20060040816A

Abstract

The present invention relates to a jaw plate of a box opening device for opening a box into a hexahedral shape in a box shaping machine, and more particularly, to a connection structure of a jaw plate and dome unit capable of elastically holding a corrugated cardboard box using a pin inserted into the corrugated cardboard box such that the corrugated cardboard box and pin are not easily separated from each other. Therefore, the connection structure of a jaw plate and dome unit according to the present invention provides a pressing force suitably according to a force applied thereto such that a corrugated cardboard box cannot be escaped even during the operation of a box opening device, thereby ensuring accurate operation. Further, since the dome unit and is slid into the jaw plate and thus maintains the elasticity of the connection structure when an excessive pressure is applied thereto, a pin is not bent. Thus, the durability of the connection structure is excellent.

Description

THE CONNECT STRUCTURE OF JAW PLATE AND DOME

UNIT

Technical Field

[I] The present invention relates to a jaw plate of a box opening device for opening a box into a hexahedral shape in a box shaping machine, and more particularly, to a connection structure of a jaw plate and dome unit capable of elastically holding a corrugated cardboard box using a pin inserted into the corrugated cardboard box such that the corrugated cardboard box and pin are not easily separated from each other. Background Art

[2] Generally, a box shaping machine is a machine for making a flat box, which was unfolded to pack and fill products in a box, into a hexahedral box. [3] That is, boxes are used for receiving or storing articles or products therein. A box manufacturer delivers unopened boxes to a user in order to easily transport the boxes. [4] Thus, in order to put articles into a box, a user of the box should open the box and fold the opened box into a hexahedral shape. Then, the user attaches a bottom side of the box with a tape when intending to use the box. [5] However, since these works cause the speed of packing the boxes to be reduced, they are quite cumbersome for an enterprise that needs to pack many articles into boxes in a short while. [6] Of course, a box shaping machine of the present invention is provided to solve the aforementioned problem. [7] Now, a working procedure of a conventional box shaping machine will be described as follows. [8] As shown in Fig. 1, a plurality of unfolded boxes 1 are mounted to a box loading device (magazine) 300 mounted with a magazine unit 200. [9] As shown in Figs. 1 and 2, the mounted boxes 1 are moved to a right-side lower flap folding device 400 and a box opening device 500 and then folded into a hexahedral shape by means of the magazine unit 200. [10] In addition, when each of the folded boxes 1 passes through a tape applying device

600, a tape is applied to the box 1, so that one complete box 1 can be produced.

[I I] However, such a conventional box shaping machine has many problems.

[12] Therefore, a dome structure corresponding to a jaw plate D that is a component of the box opening device 500 will be now discussed, and the related problems will be explained hereinafter.

[13] That is, as shown in Figs. 1 to 6, the box opening device 500 of the box shaping machine according to the present invention or the prior art is generally composed of the jaw plates D. [14] As shown in Fig. 4, each of the jaw plates D is formed in a plate shape and puts pins

101 into the corrugated cardboard box 1 that has been transferred through the magazine unit 200 of the loading device (magazine) 300 of the box shaping machine in the form of a plate. [15] Of course, as shown in Fig. 5, any one of the jaw plates D is then rotated 90 degrees such that the plate- shaped corrugated cardboard box 1 can be opened into a hexahedral shape in a state where upper and lower ends thereof are opened. [16] However, at this time when the jaw plates D for opening the box 1 is operated, the pins 101 may be escaped from the corrugated cardboard box 1. [17] Thus, in order to solve this problem, dome nuts 102 as shown in Figs. 4 and 6 are attached to the jaw plates D in a state where they protrude slightly from the jaw plates

D. [18] That is, as shown in Figs. 4 to 7, the pins 101 of the jaw plates D are inserted into the corrugated cardboard box 1, and the dome nuts 102 protruding from lower ends of the jaw plates D presses the corrugated cardboard box toward the pins 101 to prevent the jaw plates D from being escaped from the cardboard box 1 during their operations. [19] However, it cannot completely solve the problem.

[20] That is, if the dome nuts 102 protrude too much, they may damage upper valleys of the corrugated cardboard box. [21] Further, since the thickness of the pin 101 is fixed, the adaptability to the thickness of the box is low, so that the pins and the valleys of the corrugated cardboard box are not brought into close contact with each other. Therefore, a phenomenon that the box is escaped from the jaw plates may be produced. [22] Second, since the protruding dome nuts 102 are fixed, they cannot efficiently hold the corrugated cardboard box 1. [23] That is, since there is no force of softly pressing the box by the dome nuts with a suitable pressing force, the box may be easily escaped from the jaw plates. [24] Third, due to the above reasons, the pins 101 fixed to the jaw plates D cannot be used for a long while.

Disclosure of Invention

Technical Problem [25] The present invention is conceived to solve the above problems. Accordingly, an object of the invention is to provide a connection structure of a jaw plate and dome unit capable of elastically holding a corrugated cardboard box using a pin inserted into the corrugated cardboard box such that the corrugated cardboard box and pins are not easily separated from each other. Technical Solution

[26] In order to accomplish the above object of the present invention, there is provided a connection structure of a jaw plate and dome nut, comprising a pin guide hole formed to have two holes at a lower end of a pin block assembling unit in which a corrugated cardboard box is inserted, a dome unit inserted into the pin guide hole and protruding from the pin guide hole, and an elastic means for imparting an elastic force to the dome unit, whereby the corrugated cardboard (box) can be elastically held when the corrugated cardboard box is inserted.

[27] Preferably, the dome unit protruding slightly from the jaw plate comprises a shoulder pin including a protruding portion, a pin guide portion moving along the pin guide hole of the jaw plate and a shoulder pin; and a dome nut coupled to a screw portion of the shoulder pin, whereby the corrugated cardboard box can be held with a predetermined pressure.

[28] Further, the elastic means may be selected from a group consisting of a wave washer having elasticity as much as wave amplitude at an outer circumference thereof, an elastic rubber and an elastic spring.

Advantageous Effects

[29] A connection structure of a jaw plate and dome unit according to the present invention provides a pressing force suitably according to a force applied thereto such that a corrugated cardboard box cannot be escaped even during the operation of a box opening device, thereby ensuring accurate operation. [30] In addition, according to the present invention, since the dome unit is slid into the jaw plate and thus can maintain the elasticity of the connection structure when an excessive pressure is applied thereto, a pin is not bent. Thus, the durability of the connection structure is excellent. [31] Moreover, the fatigue produced in the jaw plate during its operation can be reduced by means of the connection structure of a jaw plate and dome unit according to the present invention.

Brief Description of the Drawings

[32] Fig. 1 is a plan view of a general box shaping machine.

[33] Fig. 2 is a front view of the general box shaping machine.

[34] Fig. 3 is a side view of the general box shaping machine.

[35] Fig. 4 is a view illustrating a state where an upper end of a box is inserted in a gap between a pin and a jaw plate in a box opening device of the general box shaping machine. [36] Fig. 5 is a view illustrating a state where the box is opened after the upper end of the box has been inserted in the gap between the pin and jaw plate in the box opening device of the general box shaping machine. [37] Fig. 6 is an exploded perspective view illustrating a state where a dome nut is fastened to the conventional jaw plate.

[38] Fig. 7 is a sectional view showing a state where the dome nut is fastened to the con¬ ventional jaw plate. [39] Fig. 8 is a sectional view showing a state where a shoulder pin and dome nut are coupled to the jaw plate of the present invention. [40] Fig. 9 is a sectional view illustrating a state where a box is nipped by a pin of the jaw plate according to the present invention. [41] Fig. 10 is a sectional view showing a connection structure in which a dome nut fastened to the jaw plate of the present invention is deeply rounded. [42] Fig. 11 is a sectional view showing the connection structure in which a corrugated cardboard box is inserted between the dome nut and the pin of the jaw plate of Fig. 9. [43] Fig. 12 is an exploded perspective view showing a state where the dome nut and shoulder pin are being coupled to the jaw plate according to the present invention. [44] <Brief description of reference numerals in the drawings>

[45] 1; box 10; pin guide hole

[46] 11 ; pin block assembling unit D; jaw plate

[47] 20; shoulder pin 22; pin guide portion

[48] 23; screw portion 29; dome nut

[49] 30; dome unit 40; elastic means

[50] 41 ; wave washer A; jaw

Best Mode for Carrying Out the Invention [51] The present invention is similar to the prior art in that it is directed to a connection structure of a pair of jaw plates and dome nuts for opening a corrugated cardboard box in a box shaping machine. [52] However, in view of quantitative and qualitative technical effects according to the combination of components, the present invention is significantly distinguishable from the prior art and also has difficulties in configuring the combination of components.

Therefore, the present invention will be described in detail with reference to the ac¬ companying drawings. [53] As shown in Figs. 8 to 12, the present invention is configured in such a manner that a pin guide hole 10 having two holes spaced apart from each other by a regular interval are formed in a jaw plate D at a lower end of a pin block assembling unit 11 in which a corrugated cardboard box 1 is inserted. [54] A first guide hole 71 is a hole which a dome nut 29 to be described later is seated in and cooperating with, and a second guide hole 72 is a hole which a pin guide portion

22 is seated in and cooperating with. [55] In addition, the present invention provides a connection structure of a jaw plate and dome unit in which a dome unit 30 is inserted in the pin guide hole 10 to protrude slightly therefrom and an elastic means 40 is interposed between the pin guide hole 10 and the dome unit 30 to provide a buffering function such that they are organically coupled with one another. [56] That is, in such a connection structure, when the corrugated cardboard box 1 is inserted in a gap between the jaw plate and the pin (101) unit, the dome unit 30 is pushed into the pin guide hole 10 so that the corrugated cardboard (box) 1 can be elastically held. Therefore, a phenomenon that the box is easily escaped can be prevented and the durability can also be improved. [57] Here, the dome unit 30 generally includes all units in the form of a dome that protrudes slightly from the jaw plate D, and the elastic means 40 may also include a variety of known ones. [58] Hereinafter, the dome unit 30 protruding slightly from the jaw plate D will be described in detail. [59] As shown in Fig. 12, the dome unit 30 takes the shape of a cylinder and includes a protruding (dome) portion 29 formed at one side with a relatively large diameter, a pin guide portion 22 moving along an inner circumferential surface of the pin guide hole

10 in the jaw plate D, and a shoulder pin 20. [60] Further, a dome nut 29 is formed in such a manner that it is coupled to a screw portion 23 of the shoulder pin 20 and protrudes out of the jaw plate D. Thus, the dome unit moves along the pin guide hole 10. [61] That is, as shown in Fig. 8, when the corrugated cardboard box 1 is not inserted into the pin 101 of the jaw plate D, the dome nut 29 is kept at a state where it protrudes greatly from the jaw plate due to the elasticity of a wave washer 41 which is one of the elastic means 40. [62] However, as shown in Fig. 9, if the corrugated cardboard box 1 is inserted, the dome nut 29 is pressed due to the thickness of the corrugated cardboard and then pushed into the pin guide hole 10 of the jaw plate D. [63] Of course, the corrugated cardboard is pressed between the pin 101 of the jaw plate

D and the dome nut 29 due to the elasticity of the wave washer 41 which is one of the elastic means 40, and thus, it cannot be easily escaped therefrom. [64] Referring to Figs. 8 to 12, only the wave washer 41 is illustrated as the elastic means 40. [65] However, the present invention is not limited thereto, and the elastic means 40 may include all kinds of conventional elastic means that can provide a buffering function. [66] That is, the illustrated wave washer 41 having elasticity as much as wave amplitude at its outer circumference may be used as the elastic means 40, and an elastic rubber may also be used.

[67] Further, a general elastic spring or leaf spring may be employed as the elastic means.

[68] As shown in Figs. 8, 9 and 12, since the dome nut 29 is configured such that only the uppermost end is slightly rounded, it may have a projecting portion A protruding from the jaw plate D.

[69] This projecting portion is likely to apply a little load to the corrugated cardboard when the corrugated cardboard is inserted. Thus, a dome nut 29 of which a projecting portion A does not protrude to the outside as shown in Figs. 10 and 11 may be employed as another embodiment of the present invention.

[70] That is, the dome nut 29, which is deeply rounded and brought into contact with the corrugated cardboard along a curved surface, is also included in the scope of the present invention.

[71] Hereinafter, the operation of the connection structure according to the present invention will be described in detail.

[72] If an upper end of a corrugated cardboard box 1 transferred through a box carrying device from a loading device (magazine) 300 of the box shaping machine is inserted into the pin 101 of the jaw plate D of the present invention, the dome unit 30 is pushed into the jaw plate D by means of bending stress generated from the dome nut 29 and a surface of the corrugated cardboard box 1.

[73] That is, the pin guide portion 22 of the dome unit 30 is retracted along the pin guide hole 10 of the jaw plate D, and the dome nut 29 is also retracted into the pin guide hole 10.

[74] Of course, even in such a state, an elastic force is always applied to the dome unit

30 by means of the elastic means 40 such as the wave washer 41 in a direction in which the corrugated cardboard box 1 is pressed. Thus, the corrugated cardboard box 1 is not easily escaped when the dome unit 30 cooperates with the jaw plate D.

[75] Further, in a case where the corrugated cardboard box 1 has been escaped, the elastic means 40 of the dome unit 30 according to the present invention tends to push the dome unit 30 toward a front surface of the jaw plate D. However, since a diameter of a head 21 of the shoulder pin 20 is greater than that of the second guide hole 72 of the pin guide hole 10, the dome unit 30 cannot be escaped from the jaw plate.

Claims

[1] A connection structure of a pair of jaw plates and dome units for opening a corrugated cardboard box in a box shaping machine, the structure comprising: a pin guide hole (10) formed in a jaw plate (D) at a lower end of a pin block assembling unit (11) in which a corrugated cardboard box (1) is inserted, the pin guide hole having two holes spaced apart from each other by a regular interval; a dome unit (30) inserted into the pin guide hole (10) and protruding slightly from the pin guide hole; and an elastic means (40) interposed between the pin guide hole (10) and the dome unit (30) to provide a buffering function, wherein the pin guide hole (10), the dome unit (30) and the elastic means (40) are organically coupled with one another such that the inserted corrugated cardboard box (1) is elastically held while the dome unit is pushed into the pin guide hole (10).

[2] The connection structure as claimed in claim 1, wherein the dome unit (30) protruding slightly from the jaw plate (D) includes: a cylindrical shoulder pin (20) having a pin guide portion (22) moving along an inner circumferential surface of the pin guide hole (10) of the jaw plate (D); and a dome nut (29) coupled to a screw portion (23) of the shoulder pin (20) and protruding out of the jaw plate (D), wherein the shoulder pin and the dome nut are organically coupled with each other to hold the corrugated cardboard box with a predetermined pressure.

[3] The connection structure as claimed in claim 1, wherein the elastic means (40) for pushing the dome nut (29) out of the jaw plate (D) is selected from a group consisting of a wave washer (41) having elasticity as much as wave amplitude at an outer circumference thereof, an elastic rubber and an elastic spring.

[4] The connection structure as claimed in claim 2, wherein the dome nut (29) is deeply rounded and brought into contact with the inserted corrugated cardboard along a curved surface.