Manufacturing method of composite glue injection profile

Abstract

The invention discloses a composite glue injection profile manufacturing method which comprises the steps that firstly, a profile is provided, the profile is provided with a glue injection groove, the glue injection groove is provided with a glue injection opening, and a temporary bridge is arranged at the bottom, opposite to the glue injection opening, of the profile; 2, glue injection is conducted, specifically, heat insulation glue is injected into the glue injection groove from the glue injection opening, the heat insulation glue is injected in multiple times till the glue injection groove is full of the glue, and shrinkage stress generated when the glue injection groove is directly full of the heat insulation glue at a time is larger than deformation resistance of the profile; and 3, bridge cutting is conducted, specifically, the temporary bridge is cut off, and the needed composite glue injection profile is obtained. According to the manufacturing method of the composite glue injection profile, no shaping is needed, it can be guaranteed that the manufactured composite glue injection profile does not deform obviously, the requirements of product installation and application are met, and the production cost is low.

Description

Technical Field

[0001] The present application relates to the technical field of door and window profiles, and in particular to a method for manufacturing a composite glue-injected profile. Background Art

[0002] As people pursue a better life, their attention to doors and windows is no longer limited to their firmness, but also puts forward higher and higher requirements for thermal insulation. For example, in summer, when the air conditioner is turned on indoors, the indoor cold air should not be transferred to the outside as much as possible, and the outdoor hot air should not be transferred to the indoors as much as possible; similarly, in winter, when the heating is turned on indoors, the indoor heating should not be transferred to the outside as much as possible, and the outdoor cold air should not be transferred to the indoors as much as possible. In this way, the market began to appear in composite injection profiles, that is, the profiles used to manufacture door frames and window frames are injected with thermal insulation glue to meet the needs of indoor and outdoor thermal insulation. However, as the requirements for thermal insulation increase, technicians have found that it may be necessary to consider increasing the volume of the injection groove or using multiple injection grooves to inject more thermal insulation glue. However, whether the volume of the injection groove is increased or multiple injection grooves are used, it is easy to cause obvious deformation of the profile after the injection (there is generally no deformation problem when there are few or small injection grooves). In this way, the manufactured composite injection profile cannot meet the requirements of product installation and application. Admittedly, deformation can be restored through plastic surgery, but obviously, this will increase the process flow and require the introduction of plastic surgery equipment, which increases production costs. Summary of the invention

[0003] The purpose of the present application is to provide a method for manufacturing a composite injection-molded profile, which does not require shaping and can ensure that the manufactured composite injection-molded profile has no obvious deformation, meets the requirements of product installation and application, and has a low production cost.

[0004] To achieve the above-mentioned purpose, the present application provides a method for manufacturing a composite glue-injected profile, the manufacturing method comprising:

[0005] Step 1, providing a profile, wherein the profile has a glue injection groove, the glue injection groove is provided with a glue injection port, and a temporary bridge is provided at the bottom relative to the glue injection port;

[0006] Step 2: injecting glue, injecting heat-insulating glue into the glue injection groove from the glue injection port, injecting the heat-insulating glue in multiple times until the glue injection groove is filled, and the shrinkage stress generated when the heat-insulating glue is directly injected into the glue injection groove at one time is greater than the deformation resistance of the profile;

[0007] Step three, cutting the bridge, cutting the temporary bridge to obtain the required composite injection profile.

[0008] In one embodiment, the number of the glue injection grooves is greater than or equal to 1, each of the glue injection grooves is provided with the glue injection port and the temporary bridge, each of the glue injection grooves needs to be injected with thermal insulation glue from the glue injection port, and each of the temporary bridges needs to be cut off after the glue injection.

[0009] In one embodiment, when the number of the glue injection grooves is greater than or equal to 2, the positions of the glue injection ports on the glue injection grooves are consistent, or the positions of the glue injection ports on adjacent glue injection grooves are opposite on the glue injection grooves.

[0010] In one embodiment, in the step 2, glue is injected into each of the glue injection grooves one by one in sequence, or glue is injected into each of the glue injection grooves at the same time.

[0011] In one embodiment, in step three, the bridges of the glue injection grooves are cut one by one in sequence, or the bridges of the glue injection grooves are cut simultaneously.

[0012] In one embodiment, the glue injection grooves are injected with glue and bridge cut one by one in sequence, and the bridge cut is performed after each glue injection groove is filled with glue.

[0013] In one embodiment, bridge cutting is performed after all the glue injection grooves are filled with glue.

[0014] In one embodiment, for each of the glue injection grooves, bridge cutting is performed after the first glue injection is completed, and then glue injection is continued until it is full.

[0015] In one embodiment, the time interval between each glue injection is greater than or equal to 20 minutes.

[0016] In one embodiment, the time interval between glue injection and bridge cutting is greater than or equal to 20 minutes.

[0017] In summary, the beneficial effects of this application are:

[0018] The manufacturing method of the composite injection-molded profile of the present application adopts a method of injecting glue in multiple times until it is full, and heat is introduced (the thermal insulation glue is in a hot-melt state when injected) and dissipated (when the thermal insulation glue is cooled and formed) in stages, thereby avoiding the problem of direct filling at one time, which may cause the shrinkage stress of the thermal insulation glue when cooling to be greater than the deformation resistance of the profile due to the concentrated introduction and dissipation of heat, thereby causing deformation of the profile. It ensures that the composite injection-molded profile obtained by the manufacturing method of the present application has no obvious deformation, meets the needs of product application, and does not require the use of shaping methods, does not significantly increase the process flow, and does not introduce additional shaping equipment, so the production cost is relatively low. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 A schematic diagram of the shape of the profile involved in the manufacturing method of the composite injection-molded profile of the present application before injection of glue;

[0021] Figure 2 This is a schematic diagram of the shape of the profile involved in the manufacturing method of the composite glue-injected profile of the present application after the thermal insulation glue is directly filled into the glue injection groove at one time. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present application. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present application, and are not used to limit the present application.

[0023] Please refer to Figure 1 , Figure 2 As shown, during the manufacturing process of the composite injection molding profile, after the thermal insulation glue is injected into the injection groove of the profile ( Figure 2 The black object is the thermal insulation glue. Figure 1 The blank space corresponding to this is the glue injection groove). When the thermal insulation glue is cooled and formed, the thermal insulation glue will shrink. After being injected into the glue injection groove, the thermal insulation glue will adhere to each wall of the glue injection groove. Therefore, when the thermal insulation glue shrinks during the cooling and forming process, it will also cause the walls of the glue injection groove to shrink, thereby causing the entire profile to deform. Because the deformation is not easy to see with the naked eye, in order to show it more vividly, Figure 1 The dotted rectangular frame is used to represent the outer contour of the profile before injection (generally, most profiles include multiple walls that are roughly vertical, so the overall outer contour gives people a rectangular visual impression). Figure 2 The trapezoidal dotted line frame represents the outer contour of the profile after injection, and the difference between the trapezoidal dotted line frame and the rectangular dotted line frame is the deformation. This deformation will have an adverse effect on the subsequent installation and use of the composite injection profile on doors and windows, so this application proposes a solution to this problem as follows.

[0024] The present application provides a method for manufacturing a composite glue injection profile, the manufacturing method comprising:

[0025] Step 1, providing a profile, wherein the profile has a glue injection groove, the glue injection groove is provided with a glue injection port, and a temporary bridge is provided at the bottom relative to the glue injection port;

[0026] Step 2: injecting glue, injecting heat-insulating glue into the glue injection groove from the glue injection port, injecting the heat-insulating glue in multiple times until the glue injection groove is filled, and the shrinkage stress generated when the heat-insulating glue is directly injected into the glue injection groove at one time is greater than the deformation resistance of the profile;

[0027] Step three, cutting the bridge, cutting the temporary bridge to obtain the required composite injection profile.

[0028] The manufacturing method of the composite injection-molded profile of the present application adopts a method of injecting the glue in multiple times until it is full, and the heat is introduced (the thermal insulation glue is in a hot melt state when injected) and dissipated (when the thermal insulation glue is cooled and formed) in stages, avoiding the problem of deformation of the profile caused by the shrinkage stress of the thermal insulation glue when it is cooled due to the concentrated introduction and dissipation of heat when it is directly filled at one time, thereby ensuring that the composite injection-molded profile obtained by the manufacturing method of the present application has no obvious deformation, meets the needs of product application, and does not require the use of shaping methods, does not significantly increase the process flow, and does not introduce additional shaping equipment, so the production cost is relatively low. The following is a more detailed description of other details of the scheme.

[0029] First, this application does not limit the number of injection slots. Figure 1 , Figure 2 In the example, two glue injection grooves are used, but in fact, the profile may have one glue injection groove, or two, three or even more glue injection grooves. As long as the profile is deformed after the thermal insulation glue is injected into the glue injection groove of the profile, the solution of this application can be used to solve the problem of profile deformation. Therefore, the number of glue injection grooves described in this application is greater than or equal to 1. Of course, generally speaking, the more glue injection grooves there are or the larger the volume of the glue injection groove, the more thermal insulation glue is injected, the greater the shrinkage force generated by the cooling and molding of the thermal insulation glue, and the more obvious the deformation of the profile.

[0030] Moreover, each of the injection slots is provided with the injection port and the temporary bridge (when the number of the injection slots is greater than or equal to 2, the same applies below), each of the injection slots needs to be injected with thermal insulation glue from the injection port, and each of the temporary bridges needs to be cut off after injection. Figure 1 , Figure 2 As shown, the left and right directions in the drawing correspond to the inside and outside directions of the doors and windows that will be installed with the profile later. After the temporary bridge is cut off, the various parts of the metal profile are not directly connected in the inside and outside directions of the doors and windows, but are connected through the thermal insulation glue in the middle, which reduces heat transfer, improves the thermal insulation effect, and meets the thermal insulation requirements.

[0031] When the number of the glue injection grooves is greater than or equal to 2, the positions of the glue injection ports on the glue injection grooves may be consistent; or the positions of the glue injection ports on adjacent glue injection grooves may be opposite. Figure 1 , Figure 2 In the example, according to the orientation shown in the figure, each injection port is facing upward relative to each injection groove, which means that the positions of the injection ports on each injection groove are consistent. The positions of the injection ports on adjacent injection grooves on each injection groove can also be opposite. Figure 1 , Figure 2 In the example, one injection port faces upwards and the other injection port faces downwards. If there are more injection slots, the other injection ports are arranged according to the corresponding rules. In fact, there can be no rules at all, any injection port can face upwards and any injection port can face downwards. The scheme of this application does not have any restrictions on the directions of the injection ports. However, when the directions are consistent, it is more suitable for simultaneous injection; when the directions are opposite or even scattered and disordered, it is not suitable for simultaneous injection.

[0032] Regarding the injection of glue, in one embodiment, in the step 2, the glue injection grooves are injected with glue one by one in sequence. In another embodiment, in the step 2, the glue injection grooves are injected with glue at the same time. It is easy to understand that simultaneous injection of glue can improve the effectiveness efficiency; however, it should be noted that simultaneous injection of glue will more easily lead to a situation where more heat is concentratedly introduced and dissipated in a short period of time, which is not beneficial to the anti-deformation efforts of the composite injection-glued profile. While injecting glue one by one will obviously have a slightly lower production efficiency; but it will be more conducive to the introduction and dissipation of heat in small sections, so it is more beneficial to the anti-deformation efforts of the composite injection-glued profile.

[0033] Regarding bridge cutting, in one embodiment, in step 3, bridges are cut one by one for each of the injection grooves. In another embodiment, in step 3, bridges are cut for each of the injection grooves simultaneously. Similarly, cutting bridges simultaneously can improve production efficiency, but stress will be released in a concentrated manner, which is not very beneficial for resisting deformation; while cutting bridges one by one will reduce production efficiency, but stress will be gradually released, which is more beneficial for resisting deformation.

[0034] As for the specific sequence of glue injection and bridge cutting, it can be that glue injection and bridge cutting are carried out for each of the glue injection grooves one by one in turn, and bridge cutting is carried out after each glue injection groove is filled with glue, that is, one glue injection groove is first filled with glue and then bridge cutting is carried out, and then another glue injection groove is filled with glue and then bridge cutting is carried out; it can also be that bridge cutting is carried out after all the glue injection grooves are fully filled with glue, that is, no matter whether glue is injected one by one or simultaneously, bridge cutting is carried out after all the glue injection grooves are fully filled, and bridge cutting can be carried out either one by one or simultaneously; it can also be that each of the glue injection grooves After the first glue injection, bridge cutting is performed, and then glue injection is continued until it is full. This is more beneficial to combat deformation, because the amount of thermal insulation glue injected in the first glue injection is definitely less than the full injection, so the heat introduced is also less, and the possibility of profile deformation is also smaller. At this time, bridge cutting is completed, and the profile is completely disconnected in the inside and outside directions of the doors and windows when glue is injected subsequently. The thermal insulation glue injected subsequently is of the same material as the thermal insulation glue that has been injected previously and has now cooled and formed, so the possibility of deformation is also relatively small, so the overall deformation of the final product is relatively small.

[0035] The most critical factor is how many times to inject and how much to inject each time. This requires comprehensive consideration of various factors. The first is the total amount of thermal insulation glue to be injected. Whether it is a single injection slot or multiple injection slots, the sum of the volumes of all injection slots is the total amount of thermal insulation glue to be injected. At the same time, the material of the thermal insulation glue (thermal expansion and contraction ratio), temperature, etc., must also be considered. These factors determine the size of the shrinkage stress generated when the thermal insulation glue is cooled and formed. In addition, the deformation resistance of the profile must be considered, which is mainly related to the material, thickness, structure, etc. of the profile. Regardless of the specific profiles and thermal insulation glue that are actually faced, technical personnel in this field can conduct experimental attempts in advance. When injecting a certain amount of thermal insulation glue will cause obvious deformation of the profile, the actual amount of each injection is set to be below the certain amount, and then after each injection of this small amount of thermal insulation glue, a short time interval is paused, and the thermal insulation glue is cooled or obviously cooled before continuing the second injection, and then the same reasoning is repeated until it is full. There is no strict limit on the pause time interval, which is generally greater than or equal to 20 minutes; there is no strict limit on the time interval between glue injection and bridge cutting, which is generally greater than or equal to 20 minutes. In the case of simultaneous glue injection in multiple injection slots, since multiple slots introduce heat at the same time, the amount of each injection needs to be set smaller (compared to the case of injecting glue into each injection slot one by one).

[0036] In summary, the beneficial effects of this application are:

[0037] The manufacturing method of the composite injection-molded profile of the present application adopts a method of injecting glue in multiple times until it is full, and heat is introduced (the thermal insulation glue is in a hot-melt state when injected) and dissipated (when the thermal insulation glue is cooled and formed) in stages, thereby avoiding the problem of direct filling at one time, which may cause the shrinkage stress of the thermal insulation glue when cooling to be greater than the deformation resistance of the profile due to the concentrated introduction and dissipation of heat, thereby causing deformation of the profile. It ensures that the composite injection-molded profile obtained by the manufacturing method of the present application has no obvious deformation, meets the needs of product application, and does not require the use of shaping methods, does not significantly increase the process flow, and does not introduce additional shaping equipment, so the production cost is relatively low.

[0038] The technical solutions provided by the embodiments of the present application are introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A method for manufacturing a composite injection molding profile, characterized in that: The manufacturing method comprises: Step 1, providing a profile, wherein the profile has a glue injection groove, the glue injection groove is provided with a glue injection port, and a temporary bridge is provided at the bottom relative to the glue injection port; Step 2: injecting glue, injecting heat-insulating glue into the glue injection groove from the glue injection port, injecting the heat-insulating glue in multiple times until the glue injection groove is filled, and the shrinkage stress generated when the heat-insulating glue is directly injected into the glue injection groove at one time is greater than the deformation resistance of the profile; Step three, cutting the bridge, cutting the temporary bridge to obtain the required composite injection profile.

2. The method for manufacturing the composite injection molding material according to claim 1, characterized in that: The number of the glue injection grooves is greater than or equal to 1, each of the glue injection grooves is provided with the glue injection port and the temporary bridge, each of the glue injection grooves needs to be injected with thermal insulation glue from the glue injection port, and each of the temporary bridges needs to be cut off after the glue injection.

3. The method for manufacturing the composite injection molding profile according to claim 2, characterized in that: When the number of the glue injection grooves is greater than or equal to 2, the positions of the glue injection ports on the glue injection grooves are consistent, or the positions of the glue injection ports on adjacent glue injection grooves are opposite on the glue injection grooves.

4. The method for manufacturing the composite injection molding material according to claim 3, characterized in that: In the step 2, glue is injected into each of the glue injection grooves one by one in sequence, or glue is injected into each of the glue injection grooves at the same time.

5. The method for manufacturing the composite injection molding material according to claim 3, characterized in that: In the step three, the bridges of the glue injection grooves are cut one by one in sequence, or the bridges of the glue injection grooves are cut simultaneously.

6. The method for manufacturing the composite injection molding material according to claim 3, characterized in that: For each of the glue injection grooves, glue injection and bridge cutting are performed one by one in sequence, and bridge cutting is performed after each glue injection groove is fully filled with glue.

7. The method for manufacturing the composite injection molding material according to claim 3, characterized in that: After all the glue injection grooves are filled with glue, bridge cutting is performed.

8. The method for manufacturing the composite injection molding material according to claim 1, characterized in that: For each of the glue injection grooves, bridge cutting is performed after the first glue injection is completed, and then glue injection is continued until it is full.

9. The method for manufacturing the composite injection molding material according to claim 1, characterized in that: The time interval between each injection is greater than or equal to 20 minutes.

10. The method for manufacturing the composite injection molding material according to claim 1, characterized in that: The time interval between glue injection and bridge cutting is greater than or equal to 20 minutes.

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