Heating device for quickly activating pressure-sensitive adhesive tape and thermoplastic or thermosetting adhesive tape

Abstract

The utility model discloses a heating device for quickly activating a pressure-sensitive adhesive tape and a thermoplastic or thermosetting adhesive tape. The heating device comprises a microwave heating head, a microwave transmitting assembly and a motion driving assembly, the microwave emission assembly is connected with the microwave heating head and is used for outputting microwaves to the microwave heating head; the motion driving assembly is connected with the microwave heating head and used for achieving alignment and motion of the microwave heating head and the heated assembly. The microwave heating head is driven by the motion driving assembly to heat the heated assembly. According to the utility model, through the cooperation of the microwave emission assembly and the motion driving assembly, a pressure-sensitive adhesive tape and a thermoplastic or thermosetting adhesive tape are flexibly heated according to a set motion trail by allocating microwaves with appropriate power, and the heating objects applied by the device are the pressure-sensitive adhesive tape and the thermoplastic or thermosetting adhesive tape.

Description

Technical Field

[0001] The utility model belongs to the technical field of heating for activating pressure-sensitive adhesive tapes and thermoplastic or thermosetting adhesive tapes, and particularly relates to a heating device for quickly activating pressure-sensitive adhesive tapes and thermoplastic or thermosetting adhesive tapes. Background Art

[0002] With the rapid development of the manufacturing industry, consumer electronic components are increasingly designed to be small in size, narrow in frame, and with high bonding strength. Therefore, rigid pressure-sensitive tapes and thermosetting tapes with high cohesion and high peeling force are increasingly widely used in industry, automobiles, and electronics. Rigid pressure-sensitive tapes with high cohesion and high peeling force mainly refer to pressure-sensitive adhesives with a modulus that is more than 50% higher than that of conventional pressure-sensitive adhesives and a relatively strong cohesion. Usually, the peeling force can reach more than 20N / cm, but there are problems such as low initial adhesion and poor wettability. Thermoplastic tapes mainly refer to thermoplastic elastomer films, mainly including thermoplastic polyurethane, thermoplastic copolyester, thermoplastic polyamide, EVA and other polar thermoplastic elastomers. Adhesive film; Thermosetting tape generally refers to tape materials with thermosetting properties, mainly including thermosetting epoxy, thermosetting polyurethane, thermosetting acrylic tape, or mixed types of thermosetting tape, which can be laminated by heating and cured by heating to form a bonding strength similar to that of structural glue, usually reaching a shear strength of more than 5MPa. Compared with liquid glue, thermosetting film has the advantages of easy graphic die-cutting, low glue overflow, easy operation, controllable thickness size and uniformity, and the minimum thickness can reach 5um, which can achieve precise bonding and assembly.

[0003] Typically, pressure-sensitive tapes are assembled by laminating them using a press plate or roller at room temperature. For hard pressure-sensitive adhesives with high cohesion, increased pressure or temperature are often required at room temperature to accelerate the wetting and bonding speed of the pressure-sensitive adhesive. However, in the assembly of irregular or fragile component structures, pressure is limited, and the wetting and bonding speed of the pressure-sensitive tape can only be increased through low-pressure combined heating, while also taking into account assembly line production efficiency. Similarly, in the actual application of thermoplastic films or thermosetting tapes, some precision components require heating temperatures no higher than 75°C, while the reaction starting temperature of conventional thermosetting tapes is generally higher than 75°C. It is also best to heat only the tape without heating other components, and it is best to achieve rapid heating. Therefore, the actual assembly process of thermosetting tapes also requires local rapid heating or low-temperature activation.

[0004] Therefore, it is necessary to provide a heating device that can achieve rapid heating or low-temperature activation of pressure-sensitive tape or thermosetting tape. Utility Model Content

[0005] The main purpose of the utility model is to provide a heating device that can achieve flexible, rapid and uniform heating or low-temperature rapid activation and curing of pressure-sensitive tapes and thermoplastic or thermosetting tapes, thereby overcoming the shortcomings of the prior art.

[0006] In order to achieve the above-mentioned purpose of the utility model, the technical solution adopted by the utility model includes: a heating device for rapid activation of pressure-sensitive adhesive tape and thermoplastic or thermosetting adhesive tape,

[0007] The pressure-sensitive adhesive tape specifically includes acrylic, rubber, polyurethane, silicone or mixed types of single-sided pressure-sensitive adhesive tape, double-sided pressure-sensitive adhesive tape and substrate-free pressure-sensitive adhesive tape;

[0008] The thermoplastic tape specifically includes thermoplastic polyurethane, thermoplastic copolyester, thermoplastic polyimide, and EVA polar thermoplastic elastomer film;

[0009] The thermosetting tape specifically includes epoxy, polyurethane, acrylic or mixed type latent thermosetting single-sided tape, thermosetting double-sided tape and thermosetting baseless tape;

[0010] The heating device comprises:

[0011] Microwave heating head;

[0012] A microwave transmitting assembly is connected to the microwave heating head and is used to output microwaves to the microwave heating head;

[0013] A motion drive assembly connected to the microwave heating head, used to achieve alignment and movement between the microwave heating head and the heated component;

[0014] The microwave heating head heats the heated component under the drive of the motion driving component.

[0015] In a preferred embodiment, the microwave transmitting assembly includes a microwave transmitter for generating microwaves.

[0016] In a preferred embodiment, the microwave transmitting assembly further includes a microwave frequency conversion amplifier, which is connected to the microwave transmitter and is used to frequency-convert and amplify the microwaves generated by the microwave transmitter.

[0017] In a preferred embodiment, the microwave transmitting assembly further includes a coupler, which is connected to the microwave frequency conversion amplifier and is used to distribute or filter the power of the microwave after frequency conversion amplification.

[0018] In a preferred embodiment, the microwave transmitting assembly further includes a power meter, which is connected to the microwave frequency conversion amplifier and is used to perform real-time power detection on the microwave after frequency conversion and amplification.

[0019] In a preferred embodiment, the motion drive component includes a robotic arm and / or a guide rail platform. The robotic arm is connected to the microwave heating head and is used to drive the microwave heating head to heat the heated component according to a set motion trajectory. At the same time, the robotic arm can provide a pressing force of 0.05-0.5MPa to achieve a pressing function; the guide rail platform is connected to the heated component and is used to drive the heated component to move.

[0020] In a preferred embodiment, the heated component is positioned and fixed by a positioning and mounting fixture provided on the guide rail platform.

[0021] In a preferred embodiment, the shape of the microwave heating head is set to be circular, square, circular, ring or L-shaped.

[0022] In a preferred embodiment, the heating device further includes a controller, and the microwave emitting component and the motion driving component are both connected to the controller.

[0023] In a preferred embodiment, the heating device further comprises a power supply for supplying power to the entire heating device, and the power supply is connected to the controller and the microwave emitting assembly.

[0024] In a preferred embodiment, the heating device further comprises an optical coordinate sensor and / or a temperature detector provided on the microwave heating head, and the optical coordinate sensor and the temperature detector are used to respectively monitor the position coordinates and the temperature of the microwave heating head in real time.

[0025] The utility model discloses a heating device for quickly activating pressure-sensitive adhesive tapes and thermoplastic or thermosetting adhesive tapes. The mechanism of heating the pressure-sensitive adhesive tapes and thermoplastic or thermosetting adhesive tapes is mainly to generate molecular resonance and heat by heating the polar groups of the pressure-sensitive adhesive tapes and thermoplastic or thermosetting adhesive tapes through microwaves. The heating action is carried out simultaneously inside and outside. Compared with the conventional hot pressing plate heating by heat conduction from outside to inside, it has the technical advantage of uniformity and speed, and can achieve temperature increase from room temperature to 70-80°C within tens of seconds. At the same time, the polar molecular resonance caused by microwaves can accelerate the molecular action of the latent curing agent and the reactive groups inside the thermosetting adhesive tape, and can reduce the initial reaction temperature.

[0026] Compared with the prior art, the beneficial effects of the present invention are at least:

[0027] 1. The utility model realizes flexible heating of pressure-sensitive adhesive tape and thermoplastic or thermosetting adhesive tape according to a set motion trajectory by deploying microwaves with appropriate power through the cooperation of microwave emitting components and motion driving components.

[0028] 2. The utility model realizes flexible heating of various irregularly structured pressure-sensitive tapes and thermoplastic or thermosetting tapes by setting the microwave heating head to a variety of graphic structures. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 This is a block diagram of the principle of a heating device for rapid activation of pressure-sensitive adhesive tapes and thermoplastic or thermosetting adhesive tapes provided in a specific embodiment of the present invention;

[0031] Figure 2 This is a functional block diagram of a heating device for rapid activation of a pressure-sensitive adhesive tape and a thermoplastic or thermosetting adhesive tape, provided in another specific embodiment of the present invention;

[0032] Figure 3 This is a structural diagram of a guide rail platform, a heated component, and a microwave heating head in a specific embodiment of the present invention;

[0033] Figure 4 This is a schematic structural diagram of three different shapes of microwave heating heads in a specific embodiment of the present invention;

[0034] Figure 5 This is a schematic structural diagram of a heated component in a specific embodiment of the present invention;

[0035] Reference numerals:

[0036] 1. Power supply, 2. Microwave transmitter, 3. Microwave frequency conversion amplifier, 4. Coupler, 5. Power meter, 6. Robotic arm, 7. Microwave heating head, 8. Guide rail platform, 9. Controller, 10. Heated component, 11. Positioning and mounting fixture, 12. Pressure-sensitive tape and thermoplastic or thermosetting tape. DETAILED DESCRIPTION

[0037] The present invention will be more fully understood through the following detailed description, which should be read in conjunction with the accompanying drawings. Detailed embodiments of the present invention are disclosed herein; however, it should be understood that the disclosed embodiments are merely exemplary of the present invention, which can be embodied in various forms. Therefore, the specific functional details disclosed herein should not be interpreted as limiting, but rather as a basis for the claims and as a representative basis for teaching those skilled in the art to employ the present invention in various ways in virtually any appropriately detailed embodiment.

[0038] like Figure 1 As shown, the embodiment of the present invention discloses a heating device for rapid activation of pressure-sensitive tapes and thermoplastic or thermosetting tapes. The heating object of this device is pressure-sensitive tapes and thermoplastic or thermosetting tapes 12. It mainly includes a microwave heating head 7, a microwave emitting component, a motion driving component, a power supply 1 and a controller 9. Through the cooperation of the microwave emitting component and the motion driving component, the thermosetting film can be flexibly heated according to the set motion trajectory by deploying microwaves with appropriate power.

[0039] Combine Figure 1 and Figure 2 As shown, in this embodiment, the microwave transmitting assembly is connected to the microwave heating head 7 and is used to transmit microwaves with appropriate power to the microwave heating head 7. It specifically includes a microwave transmitter 2, a microwave amplifier 3, a coupler 4, and a power meter 5. The microwave transmitter 2 is used to generate microwaves of a certain power, i.e., the microwave transmitting device. It can be selected from the Samsung OM75P, Toshiba magnetron ER-2M248K (MM) series, or ER-2M303J series. The microwave amplifier 3 is connected to the microwave transmitter 2 and is used to amplify the microwaves generated by the microwave transmitter 2 to achieve the required heating frequency band. A power amplifier with a power range of 100W to 100KW can be selected based on the frequency design and power requirements. The coupler 4 is connected to the microwave variable frequency amplifier 3 and is used to distribute or filter the power of the microwaves after frequency conversion and amplification to achieve the required heating power. It can be selected from couplers such as C5315-102 and IPP-2298. The power meter 5 is also connected to the microwave frequency conversion amplifier 3 and is used to perform real-time power detection on the microwave after frequency conversion and amplification. Boonton4500B, ORITEL MH600, etc. can be selected.

[0040] The motion drive component specifically includes a robotic arm 6 and / or a guide rail platform 8, wherein the robotic arm 6 is connected to the microwave heating head 7, and is used to drive the microwave heating head 7 to heat the heated component 10 according to the set motion trajectory. During implementation, it can adopt a robotic arm with a common structure in the automation industry. The guide rail platform 8 is connected to the heated component 10, and is used to drive the heated component 10 to move. The guide rail platform 8 can be a screw-driven type, a slide rail type, etc. Specifically, a positioning and mounting fixture 11 is provided on the guide rail platform 8, and the heated component is positioned and fixed on the guide rail platform 8 by the positioning and mounting fixture 11. The cooperation between the robotic arm 6 and the guide rail platform 8 can realize the precise alignment and flexible movement of the microwave heating head 7 and the heated component 10. At the same time, the robotic arm 6 can provide a pressing force of 0.05-0.5MPa to realize the pressing function.

[0041] The microwave heating head 7 is connected to both the microwave emitting assembly and the motion drive assembly, specifically to the microwave frequency conversion amplifier 3 of the microwave emitting assembly and the guide rail platform 8 of the motion drive assembly. During implementation, the microwave heating head 7 can be a microwave heating head with a graphic structure, which can heat the heated positions of different structural shapes. The graphic structured microwave heating head 7 can be circular, square, circular, ring, L-shaped or other shapes. The graphic can be designed according to the actual heating requirements, specifically as follows: Figure 4 In addition, the microwave heating head 7 may also be provided with an optical coordinate sensor (not shown) and / or a temperature detection device (not shown), which can respectively monitor and provide feedback on the position coordinates and temperature of the microwave heating head 7 in real time.

[0042] The power supply 1 is connected to the controller 9 and the microwave transmitter 2 of the microwave transmitting assembly, and is used to supply power to the entire heating device and provide power guarantee.

[0043] Controller 9 is connected to the power supply 1, microwave emission assembly, and motion drive assembly. It includes at least microwave emitter 2, microwave frequency conversion amplifier 3, coupler 4, power meter 5, robotic arm 6, and guide rail platform 8, and is used to set and control the parameters of the entire heating device. Controller 9 can be selected from MKS AL-20150, DAIHEN SGP-30A, etc.

[0044] During implementation, the heated component 10 specifically includes a pressure-sensitive adhesive tape and a thermoplastic or thermosetting adhesive tape and an adhered object A and an adhered object B (see Figure 5 ).

[0045] The pressure-sensitive adhesive tape specifically includes acrylic, rubber, polyurethane, silicone or mixed types of single-sided pressure-sensitive adhesive tape, double-sided pressure-sensitive adhesive tape and substrate-free pressure-sensitive adhesive tape;

[0046] The thermoplastic tape specifically includes thermoplastic polyurethane, thermoplastic copolyester, thermoplastic polyimide, EVA, and other polar thermoplastic elastomer films;

[0047] The thermosetting tape specifically includes epoxy, polyurethane, acrylic or mixed type latent thermosetting single-sided tape, thermosetting double-sided tape and thermosetting baseless tape.

[0048] The object to be attached generally includes one or a combination of stainless steel (SUS) or nickel-plated SUS, aluminum, glass or ink glass, PC, ABS, etc.;

[0049] During implementation, the bonding process of the high cohesion pressure-sensitive adhesive is to directly tape the adhesive to an object A through the present heating bonding equipment at 40-60°C and 0.1MPa~0.5MPa pressure conditions, and then bond and assemble another object B to the object A through the present heating bonding equipment at 40-60°C and 0.1MPa~0.5MPa pressure conditions to form a bonded and activated component.

[0050] During implementation, the laminating process of thermoplastic or thermosetting tape includes two steps: pre-lamination and final lamination. The tape is pre-laminated onto an object to be laminated (for ease of description, the object to be laminated is defined as the first object to be laminated) by the present heating laminating device at a temperature of 40°C to 60°C and a pressure of 0.1MPa to 0.3MPa, and then another object to be laminated is pre-laminated and assembled onto the first object to be laminated by the present heating laminating device at a temperature of 40°C to 60°C and a pressure of 0.1MPa to 0.3MPa, forming a heated pre-laminated component 10. During the final lamination operation, the heated component 10 is mounted on the positioning and mounting fixture of the motion drive component, and then the motion trajectory calibration and temperature power calibration are performed. Specifically, the microwave heating head 7 is driven by the guide rail platform 8 and the robotic arm 6 to perform motion trajectory calibration, and the output power and temperature of the microwave heating head 7 are calibrated by the microwave emitting component under the controller 9 to achieve the required set values. Finally, the microwave emitting component sends corresponding microwaves to the microwave heating head 7 according to the frequency conversion microwave related parameters set by the controller 9 (including at least the frequency conversion band, microwave output power, etc.), and heats the heated component according to the set trajectory under the drive of the motion driving component to form a bonded and activated component.

[0051] The present invention provides a heating device for rapidly activating pressure-sensitive tapes and thermoplastic or thermosetting tapes. A microwave transmitting assembly transmits microwaves of appropriately adjusted power to a microwave heating head 7. The microwave heating head 7, through a robotic arm 6, flexibly heats the heated component, which is fixed to a movable guide platform 8, along a predetermined trajectory. By configuring the microwave heating head 7 with various graphical structures, the device can flexibly heat pressure-sensitive or thermosetting tapes with various irregular structures.

[0052] The specific application effects of a heating device for rapid activation of a pressure-sensitive adhesive tape and a thermoplastic or thermosetting adhesive tape provided by the embodiment of the present invention are shown in the following table:

[0053]

[0054]

[0055] Through comparison of application examples, it can be clearly shown that the use of a heating device for rapid activation of pressure-sensitive tapes and thermoplastic or thermosetting tapes provided by the utility model can shorten the heating activation time and also reduce the activation temperature.

[0056] The various aspects, embodiments, features and examples of the present invention should be considered as illustrative in all respects and are not intended to limit the present invention, the scope of which is defined solely by the claims. Other embodiments, modifications and uses will be apparent to those skilled in the art without departing from the spirit and scope of the present invention as claimed.

[0057] The use of headings and sections in this disclosure is not meant to limit the disclosure; each section may apply to any aspect, embodiment, or feature of the disclosure.

Claims

1. A heating device for rapid activation of pressure-sensitive adhesive tapes and thermoplastic or thermosetting adhesive tapes, characterized in that: The pressure-sensitive tape specifically includes acrylic, rubber, polyurethane, silicone or mixed type single-sided pressure-sensitive tape, double-sided pressure-sensitive tape and substrate-free pressure-sensitive tape; the thermoplastic tape specifically includes thermoplastic polyurethane, thermoplastic copolyester, thermoplastic polyimide, EVA polar thermoplastic elastomer film; the thermosetting tape specifically includes epoxy, polyurethane, acrylic or mixed type latent thermosetting single-sided tape, thermosetting double-sided tape and thermosetting substrate-free tape; The heating device comprises: Microwave heating head; A microwave transmitting assembly is connected to the microwave heating head and is used to output microwaves to the microwave heating head; A motion drive assembly connected to the microwave heating head, used to achieve alignment and movement between the microwave heating head and the heated component; The microwave heating head heats the heated component under the drive of the motion driving component.

2. A heating device for rapid activation of pressure-sensitive adhesive tapes and thermoplastic or thermosetting adhesive tapes according to claim 1, characterized in that: The microwave transmitting assembly includes a microwave transmitter for generating microwaves.

3. A heating device for rapid activation of pressure-sensitive adhesive tapes and thermoplastic or thermosetting adhesive tapes according to claim 2, characterized in that: The microwave emitting component further comprises a microwave frequency conversion amplifier, which is connected to the microwave emitter and is used for frequency conversion amplification of the microwaves generated by the microwave emitter.

4. A heating device for rapid activation of pressure-sensitive adhesive tapes and thermoplastic or thermosetting adhesive tapes according to claim 3, characterized in that: The microwave emitting assembly further includes a coupler, which is connected to the microwave frequency conversion amplifier and is used for power distribution or screening of the microwaves after frequency conversion amplification.

5. A heating device for rapid activation of pressure-sensitive adhesive tapes and thermoplastic or thermosetting adhesive tapes according to claim 4, characterized in that: The microwave transmitting assembly further comprises a power meter, which is connected to the microwave frequency conversion amplifier and is used for performing real-time power detection on the microwave after frequency conversion amplification.

6. A heating device for rapid activation of pressure-sensitive adhesive tapes and thermoplastic or thermosetting adhesive tapes according to claim 1, characterized in that: The motion drive component includes a robotic arm and / or a guide rail platform. The robotic arm is connected to the microwave heating head and is used to drive the microwave heating head to heat the heated component according to a set motion trajectory. At the same time, the robotic arm can provide a pressing force of 0.05-0.5MPa to achieve a pressing function; the guide rail platform is connected to the heated component and is used to drive the heated component to move.

7. A heating device for rapid activation of pressure-sensitive adhesive tapes and thermoplastic or thermosetting adhesive tapes according to claim 6, characterized in that: The heated component is positioned and fixed by a positioning and mounting fixture arranged on the guide rail platform.

8. The heating device for rapid activation of pressure-sensitive adhesive tapes and thermoplastic or thermosetting adhesive tapes according to claim 1, characterized in that: The shape of the microwave heating head is set to be circular, square, circular, ring or L-shaped.

9. The heating device for rapid activation of pressure-sensitive adhesive tapes and thermoplastic or thermosetting adhesive tapes according to claim 1, characterized in that: The heating device further comprises a controller, and the microwave emitting component and the motion driving component are both connected to the controller.

10. A heating device for rapid activation of pressure-sensitive adhesive tapes and thermoplastic or thermosetting adhesive tapes according to claim 9, characterized in that: The heating device further comprises a power supply for supplying power to the entire heating device, and the power supply is connected to the controller and the microwave emitting assembly.

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