KR101421133B1 - Heat Adhesion System And Method For Plastic Element Using Selective Heating - Google Patents

Abstract

The present invention relates to a heating adhesion system to connect plastic members to each other face-to-face by setting a heating section according to surface types of members. The system comprises a plate-type heating plate and independently operates heaters by setting the heating section for selective heating of the heating plate based on a user order which is put in by the user through a heating panel with heaters, which is built in the heating plate, and an input section; and a control unit which controls a driving heater to reach the setting temperature from heating temperature detected by a heating temperature device.

Description

TECHNICAL FIELD [0001] The present invention relates to a heat-sealing system for a plastic member using local heating,

Before the butt joining of the plastic member using the heating panel, the heating area is set according to the type of the member section to improve the working efficiency and workability.

Generally, in order to adhere a plastic member of a thermoplastic resin, a joining surface of a member is softly and softly melted by using a heated heating panel, and then pressed on both sides to cool the plastic member for a certain period of time.

As a prior art, Korean Patent No. 10-0994586, entitled " Plastic Elbow Pipe Joining Device ", places a plastic elbow to be joined on both sides of a heat plate fixed to a cradle, and a plastic elbow on both sides, To dissolve the adhesive surface, sequentially move the heat plate in a state in which the plastic elbow is separated from the heat plate, and then to join the cross section of the molten plastic elbow by heat.

In the above prior art, a plate-shaped heat plate is fixedly installed on a cradle, a heat plate is lifted and lowered using an elevator, and a coupling structure in which the surface heating element is mounted on the cradle is applied. Such a heat plate forms the overall contour according to the size of the plastic elbow, and the heating region is set to be constant by the area heating element constituting the heat plate. Accordingly, it is difficult for prior art to adjust the heating range in the heating plate, and the corresponding heating plate must be individually provided corresponding to the size of the material to be bonded, which results in an economical burden. Of course, considering the kind and size of the material to be bonded, it is possible to make the heat plate sufficiently large. However, even when the size of the material to be bonded is small, the electric energy required for heating the entire heat plate may be wasted, .

There is a need to improve these and other problems in connection with the prior art including these prior art documents so as to reduce the energy wastage and improve the working efficiency by setting the heating area of the heating panel corresponding to the cross-sectional type of the member to be joined. In addition, since the heating temperature is not appropriately adjusted, the joining portion may protrude when the member is excessively melted. Therefore, it is required to control the heating temperature in the heating panel and to process the joining portion smoothly.

Korean Patent No. 10-0994586 (issued on Nov. 15, 2010)

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One aspect of the present invention is to locally heat the heating panel according to the cross-sectional type of the plastic member to be joined during the butt joining of the plastic member of the thermoplastic resin.

Another aspect of the present invention is to quickly and accurately recognize a heating area using a table in which a type code and a drive heater are previously prepared for the cross-sectional type of the plastic member to heat the heating panel.

According to another aspect of the present invention, there is provided a system for thermally fusing a plastic member using local heating, the system including a heat transfer plate formed in a plate shape and a plurality of heaters built in the heat transfer plate, And a plurality of inner heaters surrounded by the plurality of outer heaters and spaced apart from each other at an inner central portion of the heat transfer plate by a plurality of outer heaters, A heating temperature sensor installed on the heat transfer plate and sensing a heating temperature; A heating zone input for providing a user command entered by a user to set a heating zone corresponding to a cross-sectional shape of the member before the butt joining of the plastic member using the heating panel; And a table indicating information on the type code and the heat generating heater corresponding to the cross-sectional shape of the member, wherein if the user command inputted through the input unit is a type code in the table, Wherein at least one heater among the plurality of heaters built in the heat transfer plate is selectively generated, and when the user command inputted through the input unit is not a type code in the table, And a control unit for selectively heating at least one heater to locally heat the heating plate and to control the heating heater such that the heating temperature sensed by the heating temperature sensing unit reaches a set temperature.

Preferably, the control unit divides the cross-sectional shape of the member when the member is heated locally, when the member is hollow, and when the member is open, and the plurality of outer heaters and the plurality of inner heaters Or only at least one of the plurality of outer heaters is driven, or only at least one of the plurality of inner heaters is driven.

According to another aspect of the present invention, there is provided a method of thermally fusing a plastic member using local heating, the method comprising: preparing a table showing information about a type code and a heater corresponding to a cross-sectional shape of a plastic member; Receiving input of a user command by a user to set a heating zone corresponding to a cross-sectional shape of the member; When the type code input to the input unit is a type code in the table, the controller selectively generates at least one heater among a plurality of heaters built in the heat transfer plate corresponding to the type code, If the type code is not the type code in the table, the control unit selectively heats at least one heater set by the user through the input unit among the plurality of heaters to locally heat the heating plate; Detecting a heating temperature of the heating plate and providing the heated temperature sensing unit to the control unit; If the heating temperature sensed by the heating temperature sensing unit is a set temperature, the control unit controls the member conveyance unit to adhere the plastic member to both surfaces of the heating panel; And the control unit controls the member transferring unit to remove the heating panel and control the heating panel transferring unit to adhere the two plastic members when the end face of the plastic member is melted.

Preferably, the step of locally heating the heat transfer plate includes a step of dividing the cross-sectional shape of the member into a case in which the hollow is hollow, a case in which the hollow is filled, and a case in which the hollow is opened, wherein a plurality of outer heaters and a plurality of inner heaters Or only at least one of the plurality of outer heaters is driven or only at least one of the plurality of inner heaters is driven.

As described above, according to the heat welding system of the plastic member using the local heating according to the embodiment of the present invention, it is possible to locally heat the heating panel according to a command provided by the user, thereby preventing unnecessary energy wastage and improving the working efficiency .

In addition, according to the embodiment of the present invention, the heat-sealing system of the plastic member using the local heating can selectively heat the plastic member by selectively heating the plastic member corresponding to the cross-sectional type of the plastic member. Can be carried out.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a configuration diagram of a thermal welding system for a plastic member using local heating according to an embodiment of the present invention; FIG.
FIG. 2 is a view for explaining an arrangement structure of a plurality of heaters in the heating panel of FIG. 1. FIG.
3 is a sectional view taken along the line aa in Fig.
Figure 4 is a table of type cords and drive heaters corresponding to the cross-sectional type of the plastic member.
5 is a block diagram of a thermal welding system of a plastic member using local heating according to an embodiment of the present invention.
FIG. 6 is a flowchart illustrating an operation of a thermal welding system of a plastic member using local heating according to an embodiment of the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a thermal welding system of a plastic member using local heating according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1, the thermal fusing system 1 according to the embodiment of the present invention includes a plastic member 10 (10a (10a, 10b)) of thermoplastic resin, (Not shown).

The plastic member 10 (10a) is not limited. For example, the plastic members 10 and 10a may be selected from a pipe used as a pipe or a gas pipe, a window frame of a building, and the like, and may be included in a plastic product (finished product or semi-finished product).

The stationary chuck 21 and the pedestal 22 are provided on a conveyance plate (not shown) and are moved forward and backward in the direction of the arrow by the member conveyance unit described later. The heating panel 30 is moved forward and backward in the arrow direction by the heating panel conveyance unit have. The movement of each part is performed by the control unit, which will be described later in detail with reference to FIG.

The heating panel (30) includes a heat transfer plate (31) formed in a plate shape having a plurality of heaters built therein. The heat transfer plate 31 may be made of, for example, a metal material or a ceramic material, as long as the heat transfer plate 31 has thermal conductivity. Specifically, for example, the heat transfer plate 31 is not particularly limited, but aluminum (Al). And may be composed of a material selected from the group consisting of nickel (Ni), tin (Sn), iron (Fe), and two or more alloys selected therefrom.

A coating layer having excellent releasability can be formed on both side surfaces of the heat transfer plate 31 on which the plastic member 10 (10a) is contacted, so that foreign substances (melt of the plastic member) do not remain and fall off well. In this case, the heat transfer plate 31 may be formed of a surface treatment process such as a sanding treatment, a primer treatment and / or an acid cleaning treatment so as to have good adhesion to the coating layer. The surface of the heat transfer plate 31 may have a fine uneven structure by the upper surface treatment process.

2 and 3, the heat transfer plate 31 of the heating panel 30 includes first to eighth heaters 32, 33, 34, 35, 36, 37, 38, . The plurality of heaters are surrounded by a plurality of outer heaters 32, 34, 36, and 38 positioned at an inner edge of the heat transfer plate 31 at a predetermined interval and the plurality of outer heaters 32, 34, 36, and 38 And a plurality of inner heaters (33, 35, 37, 39) located at an inner center portion of the heat transfer plate (31) at regular intervals.

Each of the plurality of outer heaters 32, 34, 36, and 38 includes a portion wound in a longitudinal direction by two strands of heat wires, one side of which is drawn out to the outside of the heat transfer plate 31, do.

Each of the plurality of inner heaters 33, 35, 37, and 39 includes a portion in which two strands of heat wire are wound in a circular shape, and one side is drawn out to the outside of the heat transfer plate 31. The portion drawn out is covered with an insulating material.

The plurality of heaters 32, 33, 34, 35, 36, 37, 38, 39 may be embedded in the process of forming the heat transfer plate 31. For example, a heater may be disposed inside a mold, and then a thermally conductive metal melt 31a may be injected between the heater hot wire and the heat conductive plate to be embedded. In the embodiment, eight heaters are provided in the heat transfer plate 31. However, the number of heaters and the shape of the heaters may be changed in consideration of the installation environment.

The heating temperature sensing unit 40 may be implemented by a temperature sensor disposed at one side of the heat transfer plate 31. The heating temperature sensing unit 40 senses the heating temperature of the heat transfer plate 31 rising by the heater heating and provides the control unit to a later- In the embodiment, the case where one sensor is provided is exemplarily described, but the present invention is not limited thereto, and the number and arrangement of the temperature sensors can be changed as needed.

A plurality of outer heaters 32, 34, 36, and 38 are provided at predetermined intervals on the inner edge of the heat transfer plate 31 and a plurality of inner heaters 33, 35, 37, and 39 are provided And a structure capable of driving these heaters individually is applied, so that the heat transfer plate 31 can be locally heated when necessary.

4 and 5, the cross-sectional type of the plastic member 10 (10a) to be joined is a case where the hollow is filled (A1, A2, A5), the case where one side is opened (A3, A4) (A6, A7), and the like.

In order to cope with such various member cross-sectional types, it is necessary to locally heat the residual heat plate 31 to prevent unnecessary energy wastage. The heating panel 30 according to the embodiment includes a plurality of heat- 35, 37, and 39 disposed at the center of the inside of the heat transfer plate, the heater is selectively driven in accordance with the cross section of the member to be joined, Heating can be performed.

When performing the butt joint using such local heating, a user's input command for the type of member cross-section is provided to the control unit 60 through the input unit 50. [ The control unit 60 may include a table in which information about the type code and the drive heater corresponding to the cross-sectional type of the plastic member is prepared in advance as shown in FIG. At this time, the user searches the previously prepared table according to the type code inputted through the input unit 50 to recognize the driving heater quickly and accurately, and drives the heater by controlling the heater driving unit 70 with respect to the recognized driving heater.

On the other hand, if the control unit 60 does not have a table, or if the user directly sets a heater for local heating through the input unit 50 in order to correspond to the type of the new member cross- Of course, can be applied.

When the temperature of the heat transfer plate 31 rises due to the heater driving, the controller 60 can control the heater to be turned on and off so that the heating temperature supplied from the heating temperature sensing unit 40 reaches a set temperature suitable for bonding.

The control unit 60 controls the heating panel transfer unit 80 to control the position of the heating panel 30 or controls the member transfer unit 90 to move the position relative to the plastic member 10 or 10a.

Hereinafter, the operation of the thermal welding system of the plastic member using the local heating according to the embodiment of the present invention will be described with reference to the accompanying drawings.

Referring to FIG. 6, the system is initialized by supplying power to the thermal welding system 1 (100).

The plastic member 10 (10a) to be bonded is set on the fixing chuck 21 and the support 22, and the preparation procedure for bonding is completed (102).

A user inputs a user command for driving the heater through the input unit 50 (104). The user command may enter a type code corresponding to the cross-sectional type of the plastic member to be joined. Here, the type code corresponds to the type code information of the table previously created in the control unit 60. When the type code is input, the control unit 60 searches the table and recognizes the drive heater corresponding to the type code.

If the user command inputted from the input unit 50 is not a type code (NO in 106), the controller 60 directly receives a user command for the driving heater from the input unit 50 by the user, sets the heater 107 , And the set heater is driven to heat the heat transfer plate 31 (109). At this time, the driving heater may be driven by a combination of the outer heaters 32, 34, 36, and 38 and the inner heaters 33, 35, 37 and 39, or by driving only the at least one outer heaters 32, 34, Such as driving only one of the inner heaters 33, 35, 37, and 39, as shown in FIG.

If the user command inputted from the input unit 50 is a type code in the table (YES in 106), the control unit 60 searches the table to recognize the drive heater corresponding to the type code, drives the recognized heater, (108). The drive heater may drive the outer heaters 32, 34, 36 and 38 and the inner heaters 33, 35, 37 and 39 in combination or only the at least one outer heaters 32, 34, 36 and 38, Such as driving only the inner heaters 33, 35, 37, 39 of the heaters 33, 35, 37, 39.

The heating temperature sensing unit 40 senses the heating temperature of the heat transfer plate 31 and provides the sensed heating temperature to the control unit 60. [ The control unit 60 controls the driving heater according to the heating temperature sensed by the heating temperature sensing unit 40 to control the heating temperature to a predetermined set temperature for bonding. The control unit 70 controls the member transferring unit 110 to move the plastic members 10 and 10a to both side surfaces of the heat transfer plate 31 and make contact therewith if the detected heating temperature is a set temperature. The plastic members 10 and 10a are held for a predetermined time in a state of being in contact with the heating region of the heat transfer plate 31. When the end faces of the members are melted, (112) on both sides of the heat transfer plate (31).

The control unit 60 controls the heating panel transfer unit 80 to move the heat transfer plate 31 and control the member transfer unit 110 to bring the plastic member 10 and 10a close to each other, Contact. Thereafter, the plastic member 10 (10a) is joined by cooling for a predetermined time (114).

1: thermal fusion welding system 10, 10a: plastic member
21: fixed chuck 22:
30: Heating panel 31: Heat transfer plate
32, 34, 36, 38: outer heater 33, 35, 37, 39: inner heater
40: heating temperature sensing unit

Claims (4)

And a plurality of heaters built in the heat transfer plate, wherein the plurality of heaters include a plurality of outer heaters positioned at an inner edge of the heat transfer plate at regular intervals, and a plurality of outer heaters surrounded by the plurality of outer heaters A heating panel including a plurality of inner heaters positioned at an inner center portion of the heat transfer plate at regular intervals;
A heating temperature sensor installed on the heat transfer plate and sensing a heating temperature;
A heating zone input for providing a user command entered by a user to set a heating zone corresponding to a cross-sectional shape of the member before the butt joining of the plastic member using the heating panel; And
And a table indicating information about the type code and the heat generating heater corresponding to the cross-sectional shape of the member, wherein when the user command inputted through the input unit is a type code in the table, Wherein at least one heater among the plurality of heaters built in the heat transfer plate is selectively generated, and when the user command inputted through the input unit is not a type code in the table, at least one of the plurality of heaters And a control unit for selectively heating one heater to locally heat the heating plate and to control the heating heater such that a heating temperature sensed by the heating temperature sensing unit reaches a set temperature,
Wherein,
A plurality of outer heaters of the heat transfer plate and a plurality of inner heaters are driven in combination to divide the cross-sectional shape of the member when the heat transfer plate is locally heated, the case where the hollow is hollow, and the case where one side is filled, Wherein only at least one outer heater of the plurality of outer heaters is driven or only at least one inner heater of the plurality of inner heaters is driven.
delete Creating a table showing information about a type code and a heating heater corresponding to the cross-sectional shape of the plastic member by the control unit;
Receiving input of a user command by a user to set a heating zone corresponding to a cross-sectional shape of the member;
When the type code input to the input unit is a type code in the table, the controller selectively generates at least one heater among a plurality of heaters built in the heat transfer plate corresponding to the type code, If the type code is not the type code in the table, the control unit selectively heats at least one heater set by the user through the input unit among the plurality of heaters to locally heat the heating plate;
Detecting a heating temperature of the heating plate and providing the heated temperature sensing unit to the control unit;
If the heating temperature sensed by the heating temperature sensing unit is a set temperature, the control unit controls the member conveyance unit to adhere the plastic member to both surfaces of the heating panel; And
And the control unit controls the member transferring unit to remove the heating panel and control the heating panel transferring unit so that the two plastic members are in close contact with each other when the end face of the plastic member is melted,
The step of locally heating the heat transfer plate comprises:
A plurality of outer heaters of the heat transfer plate and a plurality of inner heaters are combined and driven by dividing the cross sectional shape of the member into hollows when the hollow is hollow and the case where one side is open or at least one of the plurality of outer heaters Wherein only the outer heater is driven or only the inner heater of at least one of the plurality of inner heaters is driven. delete

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