Gluing Method and Gluing Equipment for PTC Heating Sheets

Abstract

The present application relates to a gluing method and gluing equipment for PTC heating sheets. The gluing method for PTC heating sheets uses the gluing equipment to perform gluing operations on multiple PTC heating sheets. The gluing equipment includes an assembly plate, an automatic brush coater, and a vacuum adsorption device. The assembly plate is provided with a plurality of assembly grooves distributed in an array, and the assembly grooves are used to place PTC heating sheets; through holes are provided at the bottoms of the assembly grooves, and the vacuum adsorption device can communicate with the through holes and extract the gas in the through holes so that the PTC heating sheets can be adsorbed on the bottom walls of the assembly grooves; the automatic brush coater can coat the adhesive on the outer surface of the PTC heating sheet away from the bottom wall of the assembly groove. The gluing method and gluing equipment for PTC heating sheets provided by the present application solve the problem of low gluing efficiency of existing PTC heating sheets.

Description

Technical Field

[0001] This application relates to the technical field of the gluing method for PTC heating sheets, and particularly to a gluing method and gluing equipment for PTC heating sheets. Background Art

[0002] In the field of new energy vehicle technology, PTC heating sheets are generally used to heat the passenger compartment or the battery, so that the passengers in the vehicle are in a comfortable in-vehicle environment, or the battery is in the optimal operating temperature range. Moreover, in order to increase the power of the PTC heating sheet, multiple PTC heating sheets are generally bonded together by an adhesive to form a larger heating device. Thus, it is necessary to apply glue to the bonding surface of the PTC heating sheet. The existing gluing method uses manual brushing. Manual brushing can only coat the bonding surface of one PCT heater each time. Thus, it is not conducive to improving the gluing efficiency of the PTC heating sheet. Summary of the Invention

[0003] Based on this, it is necessary to provide a gluing method and gluing equipment for PTC heating sheets to solve the problem of low gluing efficiency of existing PTC heating sheets.

[0004] The gluing method for PTC heating sheets provided by this application uses gluing equipment to perform gluing operations on multiple PTC heating sheets. The gluing equipment includes an assembly plate, an automatic brushing machine, and a vacuum adsorption device. The assembly plate is provided with a plurality of assembly grooves distributed in an array. The assembly grooves are used to place PTC heating sheets; through holes are provided at the bottoms of the assembly grooves. The vacuum adsorption device can communicate with the through holes and extract the gas in the through holes, so that the PTC heating sheet can be adsorbed on the bottom wall of the assembly groove; the automatic brushing machine can apply the adhesive to the outer surface of the PTC heating sheet away from the bottom wall of the assembly groove.

[0005] The gluing method for PTC heating sheets includes the following steps:

[0006] Place a plurality of PTC heating sheets in the corresponding assembly grooves;

[0007] Use the vacuum adsorption device to extract the gas in the through holes from one end of the assembly plate away from the assembly grooves, so that a negative pressure is formed in the through holes and the PTC heating sheet is adsorbed;

[0008] Control the automatic brushing machine to perform brushing operations along the distribution direction of the PTC heating sheets, so that the adhesive is sequentially applied to the outer surfaces of the plurality of PTC heating sheets away from the bottom wall of the assembly grooves;

[0009] Flip the PTC heating sheet, and control the automatic brushing machine to apply glue to the other end face of the PTC heating sheet.

[0010] In one embodiment, the assembly plate is further provided with impact holes, which are arranged at one end of the assembly groove along the width direction of the assembly groove; the glue coating device further includes an air inflation pump, which is connected to the impact holes, and the air inflation pump is used to quickly fill compressed gas into the impact holes; the glue coating device further includes a plurality of limit posts, one end of each limit post is connected to the assembly plate, and the other end extends away from the assembly plate, and the plurality of limit posts surround the periphery of the assembly groove.

[0011] The glue coating method further includes the following steps:

[0012] After the adhesive on one side of the PTC heating sheet is dried, a preset volume of compressed gas is quickly filled into the impact holes through the air inflation pump, so that one side of the PTC heating sheet bounces up by a preset height and turns over, and the preset height is less than the height of the limit posts;

[0013] Control the automatic brush coater to perform a brushing operation along the distribution direction of the PTC heating sheets, so that the adhesive is sequentially coated on the outer surfaces of the plurality of PTC heating sheets away from the bottom wall of the assembly groove.

[0014] The present application also provides a glue coating device for PTC heating sheets. The glue coating device coats the PTC heating sheets by using the glue coating method described in any one of the above embodiments. The glue coating device includes an assembly plate, an automatic brush coater and a vacuum adsorption device. The assembly plate is provided with a plurality of assembly grooves distributed in an array, and the assembly grooves are used to place PTC heating sheets; through holes are provided at the bottom of the assembly grooves, and the vacuum adsorption device can be connected to the through holes and extract the gas in the through holes, so that the PTC heating sheets can be adsorbed on the bottom wall of the assembly grooves; the automatic brush coater can coat the adhesive on the outer surfaces of the PTC heating sheets away from the bottom wall of the assembly grooves.

[0015] In one embodiment, the through holes include a first through hole and a second through hole, and the first through hole and the second through hole are respectively arranged at both ends of the assembly groove along the length direction of the assembly groove.

[0016] In one embodiment, the vacuum adsorption device includes a vacuum machine and a plurality of suction cups. The plurality of suction cups are respectively connected to the vacuum machine through pipelines, and one suction cup is respectively arranged corresponding to the first through hole and the second through hole, so that the vacuum machine can respectively extract the gas in the first through hole and the second through hole.

[0017] In one embodiment, the through holes include air extraction holes and negative pressure holes. The air extraction holes penetrate through the assembly plate, and a plug is provided at one end of the negative pressure hole away from the assembly groove to block the opening of the negative pressure hole away from the assembly groove, and the assembly plate is provided with a sealing channel connecting the air extraction holes and the negative pressure holes, so that the opening of the negative pressure hole close to the assembly groove is sequentially connected to the air extraction holes through the negative pressure holes and the sealing channel.

[0018] In one embodiment, a one-way valve is provided in the sealing channel to enable the gas to flow unidirectionally from the negative pressure hole to the air extraction hole.

[0019] In one embodiment, a plurality of negative pressure holes provided in the same assembly groove are respectively communicated with an air extraction hole.

[0020] In one embodiment, placing grooves are provided on both sides of the assembly groove, and the placing grooves are communicated with the assembly groove.

[0021] In one embodiment, the placing grooves on both sides of the same assembly groove are mirror-symmetrical.

[0022] Compared with the prior art, the glue coating method and glue coating equipment for PTC heating sheets provided by the present application fix the PTC heating sheet through the assembly groove and the vacuum adsorption device, and then use an automatic brush coater to perform a brushing operation along the distribution direction of the PTC heating sheet, greatly increasing the number of PTC heating sheets that can be coated with glue in a single brushing operation. Compared with manually brushing glue on the bonding surface of only one PCT heater each time, the glue coating efficiency of the PTC heating sheet is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0024] Figure 1 Structural schematic of the glue coating equipment according to an embodiment provided by the present application Figure 1 ;

[0025] Figure 2 Structural schematic of the glue coating equipment according to an embodiment provided by the present application Figure 2 .

[0026] Reference numerals: 100, assembly plate; 110, assembly groove; 120, through hole; 121, first through hole; 122, second through hole; 130, placing groove; 140, enlarged groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] In the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present application.

[0028] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0029] In the present application, unless otherwise clearly specified and defined, terms such as "mounted", "connected", "coupled", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0030] In the present application, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0031] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific implementations and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0033] In the field of new energy vehicle technology, PTC heating sheets are generally used to heat the passenger compartment or the battery, so that the passengers in the vehicle are in a comfortable in-vehicle environment, or the battery is in the optimal operating temperature range. And, in order to increase the power of the PTC heating sheet, generally multiple PTC heating sheets are bonded together by an adhesive to form a larger heating device. Thus, it is necessary to apply glue to the bonding surface of the PTC heating sheet. The existing glue application method uses manual brushing. Manual brushing can only coat the bonding surface of one PCT heater each time. Thus, it is not conducive to improving the efficiency of applying glue to the PTC heating sheet.

[0034] Please refer to Figure 1 and Figure 2 , in order to improve the glue application efficiency of the PTC heating sheet, this application provides a glue application method and a glue application device for the PTC heating sheet. The glue application method uses the glue application device to perform a glue application operation on multiple PTC heating sheets (not shown in the figure). The glue application device includes an assembly plate 100, an automatic brushing machine (not shown in the figure) and a vacuum adsorption device (not shown in the figure). The assembly plate 100 is provided with a plurality of assembly grooves 110 distributed in an array. The assembly grooves 110 are used to place the PTC heating sheets. A through hole 120 is provided at the bottom of the assembly groove 110. The vacuum adsorption device can communicate with the through hole 120 and extract the gas in the through hole 120, so that the PTC heating sheet is adsorbed on the bottom wall of the assembly groove 110. The automatic brushing machine can coat the adhesive on the outer surface of the PTC heating sheet away from the bottom wall of the assembly groove 110.

[0035] The glue application method for the PTC heating sheet includes the following steps:

[0036] Place a plurality of PTC heating sheets in the corresponding assembly grooves 110;

[0037] Use a vacuum adsorption device to extract the gas in the through hole 120 from one end of the assembly plate 100 away from the assembly groove 110, so as to form a negative pressure in the through hole 120 and adsorb the PTC heating sheet;

[0038] Control the automatic brushing machine to perform a brushing operation along the distribution direction of the PTC heating sheet, so that the adhesive is sequentially coated on the outer surfaces of multiple PTC heating sheets away from the bottom wall of the assembly groove 110;

[0039] Flip the PTC heating sheet, and control the automatic brushing machine to apply glue to the other end face of the PTC heating sheet.

[0040] As can be seen from the above, the glue application method for the PTC heating sheet provided by this application fixes the PTC heating sheet through the assembly groove 110 and the vacuum adsorption device, and then uses the automatic brushing machine to perform a brushing operation along the distribution direction of the PTC heating sheet, greatly increasing the number of PTC heating sheets that can be glued in a single brushing operation. Compared with manual glue brushing, which can only coat the bonding surface of one PCT heater each time, the glue application efficiency of the PTC heating sheet is greatly improved.

[0041] However, it is not limited to this. The glue application operation for the PTC heating sheets arranged in an array can also be replaced by manual glue application.

[0042] In an embodiment, as Figure 1 shown, the through hole 120 includes a first through hole 121 and a second through hole 122, and the first through hole 121 and the second through hole 122 are respectively arranged at both ends of the assembly groove 110 along the length direction of the assembly groove 110.

[0043] With such a setting, the vacuum adsorption device can respectively adsorb the same PTC heating sheet through the first through hole 121 and the second through hole 122, greatly improving the assembly stability of the PTC heating sheet in the assembly groove 110.

[0044] Furthermore, in an embodiment, the vacuum adsorption device includes a vacuum machine (not shown in the figure) and multiple suction cups (not shown in the figure). The multiple suction cups are respectively connected to the vacuum machine through pipelines, and one suction cup is respectively arranged corresponding to the first through hole 121 and the second through hole 122, so that the vacuum machine can respectively extract the gas in the first through hole 121 and the second through hole 122.

[0045] In this way, when one suction cup leaks, the other suction cup can still firmly adsorb the PTC heating sheet on the bottom wall of the assembly groove 110, effectively preventing the PTC heating sheet from detaching from the assembly groove 110 during the glue application process.

[0046] In another embodiment, the through hole 120 includes an air extraction hole (not shown in the figure) and a negative pressure hole (not shown in the figure). The air extraction hole penetrates through the assembly plate 100. One end of the negative pressure hole away from the assembly groove 110 is provided with a plug (not shown in the figure) to block the opening of the negative pressure hole away from the assembly groove 110. And the assembly plate 100 is provided with a sealing channel connecting the air extraction hole and the negative pressure hole, so that the opening of the negative pressure hole close to the assembly groove 110 is communicated with the air extraction hole through the negative pressure hole and the sealing channel in sequence.

[0047] In this way, only by arranging a vacuum adsorption device at one end of the air extraction hole away from the assembly groove 110, not only can the gas in the air extraction hole be extracted, but also the gas in the negative pressure hole can be extracted through the air extraction hole and the sealing channel, thereby greatly reducing the number of suction cups and ensuring the stable adsorption of the PTC heating sheet.

[0048] It should be noted that the sealing channel only connects the air extraction hole and the negative pressure hole and does not communicate with other external spaces. And the two ends of the sealing channel are respectively arranged on the inner walls of the air extraction hole and the negative pressure hole.

[0049] Furthermore, in one embodiment, a one-way valve (not shown in the figure) is arranged in the sealing channel to enable the gas to flow unidirectionally from the negative pressure hole to the air extraction hole.

[0050] In this way, even if the air extraction hole leaks, the negative pressure hole can still firmly adsorb the PTC heating sheet, increasing the assembly stability of the PTC heating sheet. When the gluing is completed, the plug can be directly removed to make the air pressure in the negative pressure hole and the external environment balanced.

[0051] Furthermore, in one embodiment, multiple negative pressure holes arranged in the same assembly groove 110 are respectively communicated with one air extraction hole.

[0052] In this way, the firmness of the installation of the PTC heating sheet in the assembly groove 110 is further enhanced.

[0053] In one embodiment, as Figure 1 shown, pick-and-place grooves 130 are arranged on both sides of the assembly groove 110. The pick-and-place grooves 130 are communicated with the assembly groove 110, and the operator can take the PTC heating sheet in the assembly groove 110 through the pick-and-place grooves 130.

[0054] In this way, the difficulty of taking the PTC heating sheet is greatly reduced.

[0055] Furthermore, in one embodiment, the pick-and-place grooves 130 on both sides of the same assembly groove 110 are mirror-symmetrical.

[0056] In this way, the assembly difficulty of the gluing equipment is reduced.

[0057] In one embodiment, as Figure 1As shown, an enlarged groove 140 is provided at the chamfer of the assembly groove 110, so as to prevent the chamfer of the assembly groove 110 from affecting the installation of the PTC heating sheet.

[0058] In one embodiment, the gluing device further includes a drying device (not shown in the figure), and the drying device is used to dry the adhesive on the surface of the PTC heating sheet.

[0059] In this way, the drying rate of the adhesive on the surface of the PTC heating sheet is greatly improved.

[0060] In one embodiment, the assembly plate 100 is further provided with impact holes (not shown in the figure). The impact holes are arranged at one end of the assembly groove 110 along the width direction of the assembly groove 110. The gluing device further includes an air inflation pump (not shown in the figure), and the air inflation pump is communicated with the impact holes. The air inflation pump is used to quickly inflate compressed gas into the impact holes. The gluing device further includes a plurality of limiting columns (not shown in the figure). One end of the limiting column is connected to the assembly plate 100, and the other end extends in a direction away from the assembly plate 100, and the plurality of limiting columns surround the periphery of the assembly groove 110.

[0061] The gluing method further includes the following steps:

[0062] After the adhesive on one side of the PTC heating sheet is dried, quickly inflate a preset volume of compressed gas into the impact holes through the air inflation pump, so that one side of the PTC heating sheet bounces up by a preset height and turns over, and the preset height is less than the height of the limiting column;

[0063] Control the automatic brushing machine to perform a brushing operation along the distribution direction of the PTC heating sheets, so that the adhesive is sequentially coated on the outer surfaces of the plurality of PTC heating sheets away from the bottom wall of the assembly groove 110.

[0064] It should be noted that since a plurality of limiting columns surround the periphery of the assembly groove 110, under the limiting action of the limiting columns, the turned-over PTC heating sheet can return to the assembly groove 110 again. In this way, the gluing efficiency of the PTC heating sheet is greatly improved.

[0065] The present application also provides a gluing device, and this gluing device uses the gluing method described in any one of the above embodiments to glue the PTC heating sheet.

[0066] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brief description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered to be within the scope described in this specification.

[0067] The above-described embodiments merely represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all fall within the protection scope of the present application. Therefore, the patent protection scope of the present application shall be subject to the appended claims.

Claims

1. A gluing method for a PTC heating sheet, characterized in that, A gluing operation is performed on multiple PTC heating sheets using a gluing device. The gluing device includes an assembly plate (100), an automatic brushing machine, and a vacuum adsorption device. The assembly plate (100) is provided with a plurality of assembly grooves (110) distributed in an array. The assembly grooves (110) are used to place the PTC heating sheets. A through hole (120) is provided at the bottom of the assembly groove (110). The vacuum adsorption device can communicate with the through hole (120) and extract the gas in the through hole (120) so that the PTC heating sheet can be adsorbed on the bottom wall of the assembly groove (110). The automatic brushing machine can apply an adhesive to the outer surface of the PTC heating sheet away from the bottom wall of the assembly groove (110). The gluing method for PTC heating sheets includes the following steps: Place a plurality of PTC heating sheets in the corresponding assembly grooves (110). Use the vacuum adsorption device to extract the gas in the through hole (120) from one end of the assembly plate (100) away from the assembly groove (110), so that a negative pressure is formed in the through hole (120) to adsorb the PTC heating sheet. Control the automatic brushing machine to perform a brushing operation along the distribution direction of the PTC heating sheets, so that the adhesive is sequentially applied to the outer surfaces of the plurality of PTC heating sheets away from the bottom wall of the assembly groove (110). Flip the PTC heating sheet and control the automatic brushing machine to apply glue to the other end face of the PTC heating sheet. The assembly plate (100) is further provided with impact holes, and the impact holes are arranged at one end of the assembly groove (110) along the width direction of the assembly groove (110). The gluing device further includes an air inflation pump, and the air inflation pump is communicated with the impact holes. The air inflation pump is used to quickly inflate compressed gas into the impact holes. The gluing device further includes a plurality of limit posts. One end of the limit posts is connected to the assembly plate (100), and the other end extends in a direction away from the assembly plate (100). The plurality of limit posts surround the periphery of the assembly groove (110). The gluing method further includes the following steps: When the adhesive on one side of the PTC heating sheet is dried, quickly inflate a preset volume of compressed gas into the impact hole through the air inflation pump, so that one side of the PTC heating sheet bounces up by a preset height and flips, and the preset height is less than the height of the limit post. Control the automatic brushing machine to perform a brushing operation along the distribution direction of the PTC heating sheets, so that the adhesive is sequentially applied to the outer surfaces of the plurality of PTC heating sheets away from the bottom wall of the assembly groove (110).

2. A gluing device for a PTC heating sheet, characterized in that, Use the gluing method described in claim 1 to glue the PTC heating sheets. The gluing device further includes an air inflation pump, and the air inflation pump is communicated with the impact holes. The air inflation pump is used to quickly inflate compressed gas into the impact holes. The gluing device further includes a plurality of limit posts. One end of the limit posts is connected to the assembly plate (100), and the other end extends in a direction away from the assembly plate (100). The plurality of limit posts surround the periphery of the assembly groove (110). The glue coating device includes an assembly plate (100), an automatic brush coater, and a vacuum adsorption device. The assembly plate (100) is provided with a plurality of assembly grooves (110) distributed in an array, and the assembly grooves (110) are used for placing PTC heating sheets; a through hole (120) is provided at the bottom of the assembly groove (110), and the vacuum adsorption device can communicate with the through hole (120) and extract the gas in the through hole (120) so that the PTC heating sheet can be adsorbed on the bottom wall of the assembly groove (110); the automatic brush coater can coat the adhesive on the outer surface of the PTC heating sheet away from the bottom wall of the assembly groove (110).

3. The glue application device according to claim 2, characterized in that, The through hole (120) includes a first through hole (121) and a second through hole (122), and the first through hole (121) and the second through hole (122) are respectively arranged at both ends of the assembly groove (110) along the length direction of the assembly groove (110).

4. The glue coating device according to claim 3, characterized in that, The vacuum adsorption device includes a vacuum machine and a plurality of suction cups. The plurality of suction cups are respectively connected to the vacuum machine through pipelines, and one suction cup is respectively provided corresponding to the first through hole (121) and the second through hole (122) so that the vacuum machine can respectively extract the gas in the first through hole (121) and the second through hole (122).

5. The gluing device according to claim 3, characterized in that, The through hole (120) includes an air extraction hole and a negative pressure hole. The air extraction hole penetrates through the assembly plate (100), and a plug is provided at one end of the negative pressure hole away from the assembly groove (110) to block the opening of the negative pressure hole away from the assembly groove (110), and the assembly plate (100) is provided with a sealing channel connecting the air extraction hole and the negative pressure hole so that the opening of the negative pressure hole close to the assembly groove (110) is sequentially communicated with the air extraction hole through the negative pressure hole and the sealing channel.

6. The gluing device according to claim 5, characterized in that, A one-way valve is provided in the sealing channel to enable the gas to flow unidirectionally from the negative pressure hole to the air extraction hole.

7. The gluing device according to claim 5, wherein A plurality of the negative pressure holes provided in the same assembly groove (110) are respectively communicated with one air extraction hole.

8. The gluing device according to claim 2, characterized in that, Taking and placing grooves (130) are provided on both sides of the assembly groove (110), and the taking and placing grooves (130) communicate with the assembly groove (110).

9. The gluing device according to claim 8, characterized in that, The taking and placing grooves (130) on both sides of the same assembly groove (110) are mirror-symmetrical.

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