KR101332965B1 - plastic structure unit and joining method therefor - Google Patents

plastic structure unit and joining method therefor Download PDF

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Publication number
KR101332965B1
KR101332965B1 KR1020110121697A KR20110121697A KR101332965B1 KR 101332965 B1 KR101332965 B1 KR 101332965B1 KR 1020110121697 A KR1020110121697 A KR 1020110121697A KR 20110121697 A KR20110121697 A KR 20110121697A KR 101332965 B1 KR101332965 B1 KR 101332965B1
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KR
South Korea
Prior art keywords
metal plate
induction heater
thermoplastic resin
opposite surface
electromagnetic force
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KR1020110121697A
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Korean (ko)
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KR20130055986A (en
Inventor
장준호
변재훈
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인지컨트롤스 주식회사
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Priority to KR1020110121697A priority Critical patent/KR101332965B1/en
Publication of KR20130055986A publication Critical patent/KR20130055986A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/36—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction
    • B29C65/3604—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the type of elements heated by induction which remain in the joint
    • B29C65/3644—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the type of elements heated by induction which remain in the joint being a ribbon, band or strip
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/36—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction
    • B29C65/3604—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the type of elements heated by induction which remain in the joint
    • B29C65/3644—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the type of elements heated by induction which remain in the joint being a ribbon, band or strip
    • B29C65/3648—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the type of elements heated by induction which remain in the joint being a ribbon, band or strip said strip being perforated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/36—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction
    • B29C65/3672—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the composition of the elements heated by induction which remain in the joint
    • B29C65/3676—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the composition of the elements heated by induction which remain in the joint being metallic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/114—Single butt joints
    • B29C66/1142—Single butt to butt joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/24—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight
    • B29C66/242—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours
    • B29C66/2422—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being circular, oval or elliptical
    • B29C66/24221—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being circular, oval or elliptical being circular
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/24—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight
    • B29C66/242—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours
    • B29C66/2424—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being a closed polygonal chain
    • B29C66/24243—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being a closed polygonal chain forming a quadrilateral
    • B29C66/24244—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being a closed polygonal chain forming a quadrilateral forming a rectangle
    • B29C66/24245—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being a closed polygonal chain forming a quadrilateral forming a rectangle forming a square
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/301—Three-dimensional joints, i.e. the joined area being substantially non-flat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/303—Particular design of joint configurations the joint involving an anchoring effect
    • B29C66/3034—Particular design of joint configurations the joint involving an anchoring effect making use of additional elements, e.g. meshes
    • B29C66/30341—Particular design of joint configurations the joint involving an anchoring effect making use of additional elements, e.g. meshes non-integral with the parts to be joined, e.g. making use of extra elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5221—Joining tubular articles for forming coaxial connections, i.e. the tubular articles to be joined forming a zero angle relative to each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • B29C66/542—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles joining hollow covers or hollow bottoms to open ends of container bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/824—Actuating mechanisms
    • B29C66/8242—Pneumatic or hydraulic drives

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)

Abstract

The present invention relates to a joining method for a thermoplastic resin structure joined body. The present invention, the first structure made of a thermoplastic resin; A second structure laminated or superimposed on the first structure, the second structure including a portion of the thermoplastic resin facing the first structure; And disposed between the first structure and the second structure, which face each other, are in close contact with the opposite surfaces of the first structure and the second structure that face each other, and generate heat at a high temperature to face the opposite surface of the first structure and the second structure. And a metal plate for melting and bonding the first structure and the second structure to each other, wherein the first plate, the metal plate, and the second structure are sequentially or stacked in the induction heater, and then the metal plate is connected to the induction heater. After heating to melt the opposite surface, the melt is cooled to join the first and second structures into a single piece. According to the present invention, the first structure and the second structure can be easily joined and can be joined even when they are bent on the opposite surface.

Description

Plastic structure unit and joining method therefor}

The present invention relates to a bonding method for a thermoplastic resin structure bonded body, and relates to a bonding method for a thermoplastic resin structure bonded body composed of two kinds and bonded together.

In general, thermoplastic structures such as plastic pipes or plastic molds are joined by bonding or melting of the joint surface through direct heating of the joint surface. However, since the precision and durability of thermoplastic resin structures used in precision applications such as parts of a vehicle are deteriorated by the aforementioned method, the joint surfaces facing each other with the thermoplastic resin structures are fused by ultrasonic waves, It joins as it generates heat while rubbing by this fine vibration. In more detail, any one of the structures and the other one of the structures are bonded to each other while the contact surface is melted by ultrasonic welding while the bonding surface is in close contact, or the contact surface is rubbed at high speed and the contact surface is rubbed. As they are melted by exotherm, they are joined together.

However, such a thermoplastic resin structure can be joined by ultrasonic welding or friction welding only when the contact surface is always in a straight line. If any one of the contact surfaces is curved, the part is excited by bending, so the excited part is not fused by ultrasonic welding, or the excited part is not fused because it is not rubbed.

On the other hand, induction heaters have recently emerged. The induction heater refers to an electromagnetic induction heating device. The operating principle is that when an electric current is sent to the coil of the main body, an induced electromagnetic force is generated in the coil, and when the magnetic force line of the induced electromagnetic force passes through the metal, the resistance component contained in the metal material An eddy current is generated by (iron component). In addition, the eddy current generates only the metal itself, thereby generating induction heating, in which only the metal becomes hot.

For example, the home induction heater (also called induction range) is only the pot is heated when the coil provided on the top plate of the main body to provide a magnetic line to the pot. When the induction heater is heated, the heating stops immediately when the pot is lifted, so it is not only hot and safe to touch the top plate, but also energy is generated because energy is generated only at the part where the coil and the pot are in contact.

The present invention has been made to solve the above problems, and provides a joining method for a thermoplastic resin structure joined body made of a plurality of thermoplastic materials are joined as a single body as the opposite surfaces facing each other by the metal body and the induced electromagnetic force is melted. The purpose is to:

In particular, it is an object to provide a joining method for a thermoplastic resin structure joined body in which a melt can penetrate or be accommodated in a metal body.

Bonding method for a thermoplastic resin structure joined body according to the present invention for achieving the above object, the first structure input step of injecting a first structure made of a thermoplastic resin into the induction heater; A metal plate stacking step of stacking a metal plate on an upper side of the first structure; A second structure stacking step of stacking a second structure made of a thermoplastic resin on an upper side of the metal plate; An opposite surface melting step of melting the opposite surfaces of the first structure and the second structure by heating the metal plate with the induction heater; And a cooling step of cooling the first structure and the second structure.

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In addition, the bonding method according to the present invention, the sequential layer step of sequentially laminating a second structure made of a metal plate and a thermoplastic resin on top of the first structure made of a thermoplastic resin; An input step of injecting the stacked first structure, the metal plate, and the second structure into the induction heater; An opposite surface melting step of melting the opposite surfaces of the first structure and the second structure by heating the metal plate with the induction heater; And a cooling step of cooling the first structure and the second structure.
Here, in the above-described opposite surface melting step, as the jig for fixing both sides of the first structure, the metal plate, and the second structure is embedded in the induction heater, the first structure and the A gripping step of holding the metal plate and the second structure by the jig; And providing an induced electromagnetic force to provide the induced electromagnetic force when the first structure, the metal plate, and the second structure are gripped by the jig.
In addition, the opposite surface melting step is performed after the gripping step is performed, and before the induction electromotive force providing step is carried out, it is installed inside the induction heater to press the upper portion of the second structure to the It may be configured to include a; further comprising a pressing step of pressing the first structure and the metal plate and the second structure.

The cooling step may include, for example, a first slow cooling step of slowly cooling the first structure and the second structure in which the opposite surface is melted inside the induction heater; And a second slow cooling step of discharging the first structure and the second structure to the outside of the induction heater to perform secondary cooling at room temperature.

Here, the aforementioned bonding method may further include a preheating step of preheating at least one of the first structure, the second structure, and the metal plate before the metal plate is heated.

The preheating step may be performed, for example, before the first structure, the metal plate, and the second structure are introduced into the induction heater, or may be performed after being introduced into the induction heater.

In the bonding method for the thermoplastic resin structure joined body according to the present invention, the first structure and the second structure as the metal plate is heated at a high temperature by the induced electromagnetic force of the induction heater and joined while melting the opposite surface of the first structure and the second structure. It can be easily bonded, even if the bent on the opposite surface of the first structure and the second structure can be bonded when the bending is formed on the metal plate, there is an effect that can join a plurality of thermoplastic resin structures regardless of the shape. .

In particular, since the opposing surfaces of the first structure and the second structure are melted by the heat generation of the metal plate, the first structure and the second structure are bonded to each other, so that precise bonding is possible and excellent durability can be expected. It can be used in applications requiring precision.
In addition, since the first structure, the metal plate, and the second structure are held by the jig and fixed inside the induction heater, the metal plate is heated by the induced electromagnetic force of the induction heater. It can be easily fixed to.
Furthermore, since the upper portion of the second structure is pressed by the pressing member, the first structure, the metal plate, and the second structure may be fixed to the inside of the induction heater in a compressed state.

In addition, when the melt flows into the communication hole of the metal plate or is accommodated in the unevenness of the metal plate, the first structure and the second structure can be very firmly bonded.

In addition, since the cooling is performed sequentially in the induction heater and the outside after the melt is formed, it is possible to more firmly join the joint portion of the first structure and the second structure.

In addition, when the metal plate is heated after preheating at least one of the first structure, the second structure, and the metal plate, not only the joint portion of the first structure and the second structure can be more firmly bonded, but also the melting time of the opposite surface. It can be shortened.

1 is an exploded perspective view of a thermoplastic resin structure assembly manufactured according to a first embodiment of the present invention;
FIG. 2 is a side view illustrating a bonded state of the thermoplastic resin structure joined body shown in FIG. 1; FIG.
Figure 3 is a side view showing a bonding state of the thermoplastic resin structure assembly produced according to the second embodiment of the present invention,
Figure 4 is a side view showing the bonding state of the thermoplastic resin structure assembly produced according to the third embodiment of the present invention,
Figure 5 is a side view showing a bonding state of the thermoplastic resin structure assembly produced according to the fourth embodiment of the present invention.

Hereinafter, a bonding method for a thermoplastic resin structure bonded body according to an embodiment of the present invention will be described with reference to the accompanying drawings.

1 is an exploded perspective view of a thermoplastic resin structure assembly manufactured according to the first embodiment of the present invention.

As shown in FIG. 1, the thermoplastic resin structure assembly manufactured according to the first embodiment of the present invention includes a first structure 11 and a second structure 12 that are laminated or overlapped with each other so as to face each other. And a metal plate 20 installed between the first structure 11 and the second structure 12.

The first structure 11 and the second structure 12 may be composed of a pipe as shown in (a) of the drawing, alternatively in a box shape as shown in (b) of the drawing. It may be composed of a structure having. The first structure 11 and the second structure 12 are stacked as shown to have opposing surfaces facing each other. As shown in the drawing, the first structure 11 and the second structure 12 may be formed in a ring shape with opposite surfaces facing each other. Alternatively, the first structure 11 and the second structure 12 may be formed in a plate shape. The opposing surface may be formed in various forms, but only need to be formed in a stackable form. That is, if the upper end of the first structure 11 and the lower end of the second structure 12 corresponding to the opposite surface is formed in a shape coincident with each other, any shape is satisfied.

The metal plate 20 is located between the upper end of the first structure 11 and the lower end of the second structure 12 as shown. The metal plate 20 has a bottom surface formed in a shape corresponding to an upper end (upper surface) of the first structure 11, and an upper surface formed in a shape corresponding to a lower end (lower surface) of the second structure 12. And the thickness of the thin film.

The metal plate 20 may be formed in a ring shape as shown in the shape of the opposite surface formed on the first structure 11 and the second structure 12, or alternatively, may be formed in a plate shape. The metal plate 20 is preferably formed to have a width equal to or slightly smaller than the area of the opposing face, but may be larger than the area of the opposing face.

Here, the above-described metal plate 20 generates heat at a high temperature by the induced electromagnetic force as described below. To this end, the metal plate 20 is made of a metal material that generates heat at a high temperature by induced electromagnetic force.

2 is a side view showing a bonding state of the thermoplastic resin structure bonded body produced in accordance with the first embodiment of the present invention.

As shown in FIG. 2, the first structure 11, the metal plate 20, and the second structure 12 are introduced into the induction heater 50 in a stacked state or an overlapping state. The first structure 11, the metal plate 20, and the second structure 12 may be sequentially added to the induction heater 50 to be stacked or overlapped. Alternatively, the first structure 11, the metal plate 20, and the second structure 12 may be sequentially stacked or overlapped. After the induction heater 50 may be injected. In this case, since the metal plate 20 is stacked or overlapped with the first structure 11 and the second structure 12 as described above, both sides of the metal plate 20 are formed of the first structure 11 and the second structure 12. It is in close contact with the opposing surface.

The first structure 11, the metal plate 20, and the second structure 12 may be fixed to the inside of the induction heater 50 by the jig 30, as shown. As shown in the drawing, the jig 30 is preferably formed to hold both sides of the first structure 11, the metal plate 20, and the second structure 12. The jig 30 may include, for example, a supporting plate for supporting the side of the first structure 11, the metal plate 20, and the second structure 12, which are sequentially stacked, and the support plate with the induction heater 50. It can be configured to include a fixed to the inside of the). As shown in the drawing, the groove 32 may be formed to prevent contact with the metal plate 20. And, the fixing table may be configured of a cylinder as shown to enable the movement of the support plate.

The upper portion of the second structure 12 may be pressed by a pressing member. For example, the pressing member may be configured as an elastic body 40 or a cylinder not shown to elastically support the upper portion of the second structure 12 as shown. The pressing member presses the second structure 12 to simultaneously compress the second structure 12, the metal plate 20, and the first structure 11.

The induction heater 50 provides an induced electromagnetic force when the fixing of the first structure 11, the metal plate 20, and the second structure 12 is completed by the jig 30. In this case, the metal plate 20 is heated by the induction electromagnetic force, and while heating the heat of the first structure 11 and the second structure 12 while heating at a high heat when the first structure 11 and the first Join the two structures (12).

The metal plate 20 is disposed between the first structure 11 and the second structure 12 by a melt of the first structure 11 and the second structure 12 as shown in an enlarged view on the right side. Landfill The metal plate 20 is formed to be slightly smaller than the outer diameter of the first structure 11 and the second structure 12, that is, the area of the opposite surface, as shown in the enlarged view on the left side. And an outer circumferential surface of the second structure 12 is recessed to form an inwardly facing jaw. Therefore, the inner jaw is enclosed by the melt of the first structure 11 and the second structure 12 as shown in an enlarged view on the right side, so that the first structure 11 and the second structure 12 are sealed. The opposing surface (border surface) of) is formed in a smooth shape.

The metal plate 20 is easily embedded in the melt when a melt is generated because the first structure 11 and the second structure 12 are pressed by the elastic body 40 or a cylinder. That is, the first structure 11 and the second structure 12 is very easily bonded in a short time because the melt is pressed by the pressing force of the pressure member described above when the melt occurs.

Meanwhile, at least one of the first structure 11, the metal plate 20, and the second structure 12 may be preheated and then introduced into the induction heater 50. In this case, the first structure 11 and the second structure 12 is input after the opposite surface is preheated. The metal plate 20 is input after the whole is preheated. Therefore, the first surface 11, the metal plate 20, and the second structure 12 may be melted at the opposite surface very quickly during operation of the induction heater 50 by preheating.

Meanwhile, the first structure 11, the metal plate 20, and the second structure 12 that have been melted are first slowly cooled in the induction heater 50 for about 5 to 20 minutes. At this time, the first structure 11, the metal plate 20 and the second structure 12 is integrated into a single body as the melt solidifies. When the first slow cooling is completed, the first structure 11, the metal plate 20, and the second structure 12 are removed from the induction heater 50, and then again at room temperature for about 10 to 30 minutes. It can be slowly cooled down. At this time, when the first structure 11, the metal plate 20 and the second structure 12 is taken out from the induction heater 50, it is taken out in a unitary state by primary slow cooling. The first structure 11, the metal plate 20, and the second structure 12 are firmly joined to each other by secondary slow cooling in a unitary state.

Here, the above-described secondary slow cooling may be optionally performed, and thus may be omitted. That is, the first structure 11, the metal plate 20, and the second structure 12 may be taken out after being completely cooled in the induction heater 50.

3 is a side view illustrating a bonding state of a thermoplastic resin structure assembly manufactured according to a second embodiment of the present invention.

As shown in FIG. 3, the metal plate 20 may have a communication hole 21 formed therein. The communication hole 21 communicates the melt of the first structure 11 and the second structure 12 as shown by an arrow in an enlarged view. As a result, the first structure 11 and the metal plate 20 and the second structure 12 more completely form a unitary body. The metal plate 20 may be formed in the communication hole 21 by the other hole, otherwise, the communication hole 21 may be formed of a metal mesh.

4 is a side view illustrating a bonding state of the thermoplastic resin structure assembly manufactured according to the third embodiment of the present invention.

As shown in FIG. 4, the metal plate 20 may have fine grooves 22 formed therein. The groove 22 receives the melt of the first structure 11 and the second structure 12 as shown by the arrows in the enlarged view. As a result, the first structure 11 and the metal plate 20 and the second structure 12 more completely form a unitary body.

In this case, the groove 22 may be formed by forming a serration on the metal plate 20. Alternatively, the groove 22 may be formed by forming irregularities. It is preferable that the grooves 22 are finely formed or only a few are formed to prevent excessive reduction of the heating area.

5 is a side view illustrating a bonding state of the thermoplastic resin structure assembly manufactured according to the fourth embodiment of the present invention.

As shown in FIG. 5, the opposing surfaces of the first structure 11 and the second structure 12 may be formed in a curved line. At this time, the metal plate 20 should be formed in a shape corresponding to the opposite surface as shown. Thus, the first structure 11 and the second structure 12 is completely formed when the induction heater 50 is operated because the metal plate 20 is formed to correspond to the curved shape even if the opposite surface is formed in a curved shape. Can be bonded.

Since the above-described embodiments are merely illustrative of the preferred embodiments of the present invention, the scope of application of the present invention is not limited to the above, and appropriate modifications are possible within the scope of the same idea. Therefore, since the shape and structure of each component shown in the embodiment of the present invention can be carried out by deformation, it is natural that the modification of the shape and structure belong to the appended claims of the present invention.

The joining method for the thermoplastic resin structure joined body of the present invention can be used to connect industrial thermoplastic parts such as vehicles or ships, and alternatively, it is possible to apply to connect plastic parts of household or office equipment, that is, the present invention Applicable to various fields.

11: first structure 12: second structure
20: metal plate 21: communication ball
22: home 30: jig
40: elastic body 50: induction heater

Claims (6)

delete delete A first structure input step of injecting a first structure made of a thermoplastic resin into the induction heater;
A metal plate stacking step of stacking a metal plate on an upper side of the first structure;
A second structure stacking step of stacking a second structure made of a thermoplastic resin on an upper side of the metal plate;
An opposite surface melting step of melting the opposite surfaces of the first structure and the second structure by heating the metal plate with the induction heater; And
And a cooling step of cooling the first structure and the second structure.
The opposite surface melting step,
The induction heater is characterized in that for heating the metal plate by providing an induced electromagnetic force to the metal plate,
The opposite surface melting step,
As the jig for fixing both sides of the first structure, the metal plate, and the second structure is built in the induction heater, the first structure, the metal plate, and the second structure are gripped by the jig. A gripping step; And
And inducing electromagnetic force providing the induced electromagnetic force when the first structure, the metal plate, and the second structure are gripped by the jig.
The opposite surface melting step,
After the holding step is carried out, and before the induction electromagnetic force providing step is carried out, is installed in the induction heater to press the upper portion of the second structure to the first structure and the metal plate and the second A pressing method of pressing the structure; Bonding method of the two thermoplastic resin structure further comprising. A sequential layer step of sequentially stacking a metal plate and a second structure made of a thermoplastic resin on top of the first structure made of a thermoplastic resin;
An input step of injecting the stacked first structure, the metal plate, and the second structure into the induction heater;
An opposite surface melting step of melting the opposite surfaces of the first structure and the second structure by heating the metal plate with the induction heater; And
And a cooling step of cooling the first structure and the second structure.
The opposite surface melting step,
The induction heater is characterized in that for heating the metal plate by providing an induced electromagnetic force to the metal plate,
The opposite surface melting step,
As the jig for fixing both sides of the first structure, the metal plate, and the second structure is built in the induction heater, the first structure, the metal plate, and the second structure are gripped by the jig. A gripping step; And
And inducing electromagnetic force providing the induced electromagnetic force when the first structure, the metal plate, and the second structure are gripped by the jig.
The opposite surface melting step,
After the holding step is carried out, and before the induction electromagnetic force providing step is carried out, is installed in the induction heater to press the upper portion of the second structure to the first structure and the metal plate and the second A pressing method of pressing the structure; Bonding method of the two thermoplastic resin structure further comprising. The method of claim 3 or 4, wherein the cooling step,
A first slow cooling step of slowly cooling the first structure and the second structure in which the opposing surface is melted in the induction heater; And
And a second slow cooling step of discharging the first structure and the second structure to the outside of the induction heater to perform secondary cooling at normal temperature for a second time. 2. The method according to claim 3 or 4,
And preheating at least one of the first structure, the second structure, and the metal plate before the metal plate is heated.
The preheating step may include:
Bonding method of the two types of thermoplastic resin structure, characterized in that the first structure, the metal plate and the second structure is carried out before being introduced into the induction heater, or after being introduced into the induction heater.
KR1020110121697A 2011-11-21 2011-11-21 plastic structure unit and joining method therefor KR101332965B1 (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09290461A (en) * 1996-04-26 1997-11-11 Kawasumi Lab Inc Method for connecting tube member with each other and connected body of tube member
JP2001208274A (en) 1999-11-19 2001-08-03 Buraunii:Kk Pipe joining method and device, and pipe

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09290461A (en) * 1996-04-26 1997-11-11 Kawasumi Lab Inc Method for connecting tube member with each other and connected body of tube member
JP2001208274A (en) 1999-11-19 2001-08-03 Buraunii:Kk Pipe joining method and device, and pipe

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