Manufacturing method of composite glue injection profile

Abstract

The invention discloses a manufacturing method of a composite glue injection profile. The manufacturing method comprises the steps that firstly, heat insulation glue is injected into a first glue injection groove through a glue injection opening of the first glue injection groove; 2, waiting for a first cooling duration, and cutting off the temporary bridge of the first glue injection groove; 3, waiting for a first interval duration, and injecting heat insulation glue into a second glue injection groove through a glue injection opening of the second glue injection groove; 4, waiting for a second cooling duration, and cutting off the temporary bridge of the second glue injection groove; 5, waiting for the (N-1) th interval duration, and injecting heat insulation glue into the Nth glue injection groove through a glue injection opening of the Nth glue injection groove; and 6, waiting for the Nth cooling duration, and cutting off the temporary bridge of the Nth glue injection groove. According to the manufacturing method of the composite glue injection sectional material, the manufactured composite glue injection sectional material is small in deformation amount and can meet the requirement of final application.

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 the 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 the 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. As the requirements for thermal insulation increase, technicians have found that it is necessary to consider using two or even more injection grooves to inject more thermal insulation glue into the profiles. However, when injecting glue into multiple injection grooves, technicians naturally think of injecting glue into multiple injection grooves at the same time to improve production efficiency, but they find that the composite injection profiles manufactured in this way will have obvious deformation and cannot meet the requirements of the final application at all. Summary of the invention

[0003] The purpose of the present application is to provide a method for manufacturing a composite injection-molded profile, wherein the manufactured composite injection-molded profile has a small deformation amount and can meet the requirements of the final application.

[0004] To achieve the above-mentioned purpose, the present application provides a method for manufacturing a composite glue injection profile, wherein the profile has a plurality of glue injection grooves, including a first glue injection groove, a second glue injection groove, ..., an Nth glue injection groove, where the value of N is greater than or equal to 2, each of the glue injection grooves is provided with a glue injection port, and a temporary bridge is provided at the bottom relative to each of the glue injection ports, and the manufacturing method comprises:

[0005] Step 1: injecting heat-insulating glue into the first glue injection groove through the glue injection port of the first glue injection groove;

[0006] Step 2: Wait for a first cooling period and cut off the temporary bridge of the first glue injection groove;

[0007] Step 3: wait for a first interval time, and inject heat-insulating glue into the second glue injection groove through the glue injection port of the second glue injection groove;

[0008] Step 4: Wait for a second cooling period and cut off the temporary bridge of the second glue injection groove;

[0009] Step 5: wait for the N-1th interval time, and inject the thermal insulation glue into the Nth glue injection groove through the glue injection port of the Nth glue injection groove;

[0010] Step 6: Wait for the Nth cooling time and cut off the temporary bridge of the Nth glue injection groove.

[0011] In one embodiment, the positions of the glue injection ports on the glue injection grooves are consistent.

[0012] In one embodiment, the positions of the glue injection ports on adjacent glue injection grooves are opposite to each other.

[0013] In one embodiment, the first cooling time, the second cooling time, ..., the Nth cooling time are all less than half an hour.

[0014] In one embodiment, the first cooling time, the second cooling time, ..., the Nth cooling time are all greater than two minutes and less than twenty-five minutes.

[0015] In one embodiment, the first cooling time, the second cooling time, ..., the Nth cooling time are all equal.

[0016] In one embodiment, the first cooling time, the second cooling time, ..., the Nth cooling time gradually increase.

[0017] In one embodiment, the first cooling time, the second cooling time, ..., the Nth cooling time gradually decreases.

[0018] In one implementation, the first interval duration, ..., and the N-1th interval duration are all greater than zero.

[0019] In one embodiment, in the odd-numbered steps, injecting the thermal insulation glue into each of the glue injection grooves is performed multiple times until it is full.

[0020] In summary, the beneficial effects of this application are:

[0021] The manufacturing method of the composite injection-molded profile of the present application adopts the method of injecting glue one by one (injecting thermal insulation glue) and cutting bridges (cutting off temporary bridges) for multiple injection grooves on the profile, so that the deformation of each position of the formed composite injection-molded profile is small, and the deformation is within the error range of the product, and can still meet the needs of the final application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] 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.

[0023] Figure 1It is a three-dimensional schematic diagram of the profile involved in the manufacturing method of the composite injection-molded profile of the present application before injection of glue;

[0024] Figure 2 It is a schematic diagram of the end face of the profile involved in the manufacturing method of the composite injection-molded profile of the present application before injection of glue;

[0025] Figure 3 It is a schematic diagram of the end face of a composite glue-injected profile formed by the manufacturing method of the composite glue-injected profile of the present application;

[0026] Figure 4 The diagram is a schematic end view of a composite injection-molded profile formed by an existing manufacturing method. DETAILED DESCRIPTION

[0027] 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.

[0028] The present application provides a method for manufacturing a composite glue injection profile, wherein the profile has a plurality of glue injection grooves, including a first glue injection groove, a second glue injection groove, ..., an Nth glue injection groove, where the value of N is greater than or equal to 2, each of the glue injection grooves is provided with a glue injection port, and a temporary bridge is provided at the bottom relative to each of the glue injection ports, and the manufacturing method comprises:

[0029] Step 1: injecting heat-insulating glue into the first glue injection groove through the glue injection port of the first glue injection groove;

[0030] Step 2: Wait for a first cooling period and cut off the temporary bridge of the first glue injection groove;

[0031] Step 3: wait for a first interval time, and inject heat-insulating glue into the second glue injection groove through the glue injection port of the second glue injection groove;

[0032] Step 4: Wait for a second cooling period and cut off the temporary bridge of the second glue injection groove;

[0033] Step 5: wait for the N-1th interval time, and inject the thermal insulation glue into the Nth glue injection groove through the glue injection port of the Nth glue injection groove;

[0034] Step 6: Wait for the Nth cooling time and cut off the temporary bridge of the Nth glue injection groove.

[0035] In short, the manufacturing method of the present application abandons the conventional idea of ​​simultaneous glue injection and adopts the method of step-by-step glue injection. It seems to give up a little bit of production efficiency, but achieves better product quality and less deformation, which is conducive to improving effective production capacity.

[0036] The details of the present application scheme will be described in more detail below in combination with the accompanying drawings and specific experimental examples.

[0037] Please refer to Figure 1 , Figure 2 As shown in FIG. 1 , a common profile is applicable to the manufacturing method of the present application. The profile is generally longitudinally shaped, with a head end, a middle end, and a tail end. Its end surface has a plurality of walls that are generally perpendicular to each other. Visually, the entire end surface can be roughly called a "rectangular" (e.g. Figure 2 This roughly corresponds to the fact that most profiles used in doors and windows in real life are rectangular. Of course, it is not ruled out that some special application scenarios may require the end face of the profile to be "non-rectangular", but such profiles can also be applied to the manufacturing method of this application to reduce the deformation of the composite injection profile finally manufactured. This application uses "rectangle" as an example only for ease of understanding, and is not intended to exclude the protection of "non-rectangular" in this application. Please continue to refer to Figure 2 As shown, the profile has a plurality of glue injection grooves, including a first glue injection groove, a second glue injection groove, ..., an Nth glue injection groove, where the value of N is greater than or equal to 2, each of the glue injection grooves is provided with a glue injection port, and a temporary bridge is provided at the bottom relative to each of the glue injection ports. The temporary bridge is cut off after the glue is injected, so that Figure 2 In the left and right directions, which are also the inside and outside directions of the doors and windows where the profile is ultimately installed and applied, the heat transfer through the metal profile will be blocked to achieve the thermal insulation effect of the doors and windows. Figure 2 In the figure, two injection grooves are taken as an example, and three positions, upper, middle and lower, are defined in the perspective of the diagram. Subsequent experimental examples will measure the deformation at nine positions, namely, upper, middle and lower positions of the head end, middle end and tail end. Of course, the manufacturing method of the present application has no restriction on the number of injection grooves. Those skilled in the art can increase the number of injection grooves as needed, and can adopt the manufacturing method of the present application to reduce the deformation of the composite injection profile finally manufactured.

[0038] and, Figure 2 In the example, the orientation of each glue injection port is upward relative to each glue injection groove, that is, the positions of each glue injection port on each glue injection groove are consistent. Of course, the positions of the glue injection ports on adjacent glue injection grooves on each glue injection groove may be opposite. Figure 2In the example, one injection port is adjusted to face upward and the other injection port faces downward; 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 upward or any injection port can face downward, and the manufacturing method of this application does not have any restrictions on the directions of the injection ports.

[0039]

[0040] Table 1 Deformation data of experimental examples

[0041] In Table 1, "Slot No. 1" indicates the first glue injection slot, and "Slot No. 2" indicates the second glue injection slot. To simplify the description, the first glue injection slot, the second glue injection slot, ..., the Nth glue injection slot are collectively referred to as glue injection slots in this article. "Injection" means injecting glue, injecting thermal insulation glue into the glue injection slot. "Injection" means cutting the bridge, cutting off the temporary bridge. To simplify the description, the first cooling time, the second cooling time, ..., the Nth cooling time are collectively referred to as cooling time in this article, and the first interval time, ..., the N-1th interval time are collectively referred to as interval time.

[0042] From the data of each experimental example in Table 1, it can be seen that in the manufacturing method of the present application, each cooling time is less than half an hour (Example 1-Example 8), and a small deformation amount (less than 1mm) is obtained. The deformation amounts of the nine positions are also not much different (the maximum difference between the deformation amounts of the nine positions is less than 0.6mm), which can meet the requirements of the final application. In the existing process, the general cooling time is more than half an hour, that is, cutting is performed at least half an hour later. Because in the existing process, there is generally only one glue injection groove, the amount of glue injected is small, and the heat is also small, so the profile is generally not significantly deformed during the cooling and molding process of the thermal insulation glue, so it is generally necessary to wait for a long time, and then cut off the temporary bridge after the thermal insulation glue is completely cooled and formed. The manufacturing method of the present application does the opposite. It does not wait for the thermal insulation glue to be completely cooled and formed. Instead, during the cooling process of the thermal insulation glue, the temporary bridge is cut off after the thermal insulation glue is cooled to a certain extent, so that the two sides of the thermal insulation glue ( Figure 2Because after the thermal insulation glue is injected into the glue injection groove, it solidifies from liquid to solid, and the molecular chain of the polymer material changes from linear to spatial three-dimensional, it will shrink itself, but the shrinkage rate of different glues is slightly different; and at the same time, because the thermal insulation glue is in a high temperature state when it is just injected, the temperature is as high as 100°C+, and the room temperature is generally 25°C, with a temperature difference of 75°C+, the thermal insulation glue will release heat in the process of solidifying from liquid to solid, and the linear expansion coefficient of the polymer material leads to the visible dimensional changes of thermal expansion and contraction. That is, after the thermal insulation glue is injected into the glue injection groove, shrinkage and deformation are inevitable, and the thermal insulation glue drives the profile to shrink together, but because the glue injection groove has an opening in only one direction (the glue injection port), the side of the glue injection port of the glue injection groove will easily shrink (relative to the temporary bridge side). If the manufacturing method of the present application is not adopted, and the existing manufacturing method is adopted, the composite glue injection profile finally manufactured will be like Figure 4 As shown, the overall shape is roughly trapezoidal (such as Figure 4 The deformation is large and cannot meet the requirements of the final application. However, during the cooling process of the thermal insulation glue, the temporary bridge is cut off to allow the thermal insulation glue to drive the upper and lower sides of the profile to shrink and deform at the same time. The composite injection profile finally manufactured can still be Figure 3 As shown, the overall shape is roughly rectangular, but it is slightly shrunk relative to the original profile. Such shrinkage is also within the error range of the product, so it can still meet the requirements of the final application.

[0043] Among them, during the cooling process of the thermal insulation glue, the specific time point of cutting off the temporary bridge is related to the shape, material, wall thickness of the profile, and the material and temperature of the thermal insulation glue. The most critical point is to ensure that the hardness of the thermal insulation glue reaches 65D or above. Those skilled in the art can adjust the cooling time according to the actual situation. As for the experimental example of the present application, the specific time point of cutting off the temporary bridge can be within half an hour after the injection of glue, that is, each cooling time is less than half an hour. Preferably, each cooling time is greater than two minutes and less than twenty-five minutes. That is, the first cooling time, the second cooling time, ..., the Nth cooling time are all less than half an hour. Preferably, the first cooling time, the second cooling time, ..., the Nth cooling time are all greater than two minutes and less than twenty-five minutes. Examples 9-13 in Table 1 also provide experimental data when the cooling time is longer than 30 minutes. Obviously, when the cooling time is longer than 30 minutes, the deformation of the nine positions will be relatively large, many of which will exceed 1mm, and the difference between the deformation of the nine positions is also large. The maximum difference between the deformation of the nine positions will be greater than 0.6mm. The overall visual experience is also like this. Figure 4 The "trapezoidal" shape shown is simply not adequate for the end application.

[0044] Furthermore, each cooling time may be equal, or gradually increase, or gradually decrease. That is, the first cooling time, the second cooling time, ..., the Nth cooling time are all equal; or the first cooling time, the second cooling time, ..., the Nth cooling time gradually increase; or the first cooling time, the second cooling time, ..., the Nth cooling time gradually decrease.

[0045] In addition, regarding the interval time, after the temporary bridge is cut off (the temporary bridge is not cut off with one knife, but generally needs to be cut several times to cut off a sufficient length of the temporary bridge), the heat insulating glue has basically cooled down completely. Even if it is not completely cooled down, the remaining cooling time will basically not cause a large deformation effect on the profile. Therefore, after the temporary bridge of the first glue injection groove is cut off, in order to improve production efficiency, the second glue injection groove can be injected with glue immediately. Of course, it is also possible to wait for a period of time before injecting glue according to actual needs. Technical personnel in this field can make a choice according to actual conditions. Therefore, the first interval time, ..., and the N-1th interval time are all greater than zero.

[0046] Finally, the technicians also found that in the odd-numbered steps, the thermal insulation glue is injected into each of the glue injection grooves in multiple times until it is full. That is, when injecting glue, the glue injection groove is not filled in one time, but is filled in two, three or even multiple times until the glue injection groove is filled, which can also reduce the deformation of the profile.

[0047] In summary, the beneficial effects of this application are:

[0048] The manufacturing method of the composite injection-molded profile of the present application adopts the method of injecting glue one by one (injecting thermal insulation glue) and cutting bridges (cutting off temporary bridges) for multiple injection grooves on the profile, so that the deformation of each position of the formed composite injection-molded profile is small, and the deformation is within the error range of the product, and can still meet the needs of the final application.

[0049] The technical solutions provided by the embodiments of the present application are introduced in detail above. Specific examples are used in this article 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 glue injection profile, wherein the profile has a plurality of glue injection grooves, including a first glue injection groove, a second glue injection groove, ..., an Nth glue injection groove, wherein the value of N is greater than or equal to 2, each of the glue injection grooves is provided with a glue injection port, and a temporary bridge is provided at the bottom relative to each of the glue injection ports, wherein: The manufacturing method comprises: Step 1: injecting heat-insulating glue into the first glue injection groove through the glue injection port of the first glue injection groove; Step 2: Wait for a first cooling period and cut off the temporary bridge of the first glue injection groove; Step 3: wait for a first interval time, and inject heat-insulating glue into the second glue injection groove through the glue injection port of the second glue injection groove; Step 4: Wait for a second cooling period and cut off the temporary bridge of the second glue injection groove; Step 5: wait for the N-1th interval time, and inject the thermal insulation glue into the Nth glue injection groove through the glue injection port of the Nth glue injection groove; Step 6: Wait for the Nth cooling time and cut off the temporary bridge of the Nth glue injection groove.

2. The method for manufacturing the composite injection molding material according to claim 1, characterized in that: The positions of the glue injection ports on the glue injection grooves are consistent.

3. The method for manufacturing the composite injection molding material according to claim 1, characterized in that: The positions of the glue injection ports on adjacent glue injection grooves are opposite to each other.

4. The method for manufacturing the composite injection molding material according to claim 1, characterized in that: The first cooling time, the second cooling time, ..., the Nth cooling time are all less than half an hour.

5. The method for manufacturing the composite injection molding material according to claim 1, characterized in that: The first cooling time, the second cooling time, ..., the Nth cooling time are all greater than two minutes and less than twenty-five minutes.

6. The method for manufacturing the composite injection molding material according to claim 1, characterized in that: The first cooling time, the second cooling time, ..., the Nth cooling time are all equal.

7. The method for manufacturing the composite injection molding material according to claim 1, characterized in that: The first cooling time, the second cooling time, ..., the Nth cooling time gradually increase.

8. The method for manufacturing the composite injection molding material according to claim 1, characterized in that: The first cooling time, the second cooling time, ..., the Nth cooling time gradually decrease.

9. The method for manufacturing the composite injection molding material according to claim 1, characterized in that: The first interval duration, ..., and the N-1th interval duration are all greater than zero.

10. The method for manufacturing the composite injection molding material according to claim 1, characterized in that: In the odd-numbered steps, the thermal insulation glue is injected into each of the glue injection grooves in multiple times until it is full.

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