Glue injection machine

Abstract

The utility model discloses a glue injection machine. The glue injection machine comprises a rack; the glue solution storage container is arranged on the rack, and the glue solution storage container comprises a containing cavity and is used for storing resin glue solution; the driving mechanism is telescopically arranged in the accommodating cavity and is used for providing driving force required by feeding or discharging of the resin glue solution; and the glue solution storage container is connected with the control valve and is used for controlling external resin glue solution to enter the accommodating cavity and controlling the resin glue solution in the accommodating cavity to be injected. The glue injection machine is simple in structure and convenient to operate, feeding and discharging of resin glue liquid can be conveniently controlled through the control valve, a closed glue liquid storage environment is provided through the containing cavity, and it is guaranteed that the resin glue liquid does not go bad.

Description

Technical Field

[0001] The present application relates to the technical field of composite material molding equipment, and in particular to a glue injection machine. Background Art

[0002] In the field of pultrusion technology, an open impregnation device is usually used to contain resin glue and impregnate the yarn. However, since the resin glue in such a device is in the air environment for a long time, it is easy to deteriorate, affecting the impregnation effect of the yarn and thus affecting the product quality. The injection pultrusion technology can impregnate the yarn in a closed environment, but the existing injection method cannot effectively control the injection speed and injection pressure of the resin glue, which affects the impregnation effect of the yarn. Utility Model Content

[0003] In view of the shortcomings of the prior art, the purpose of this application is to provide a glue injection machine with a simple structure and easy operation. The feeding and discharging of the resin glue can be conveniently controlled by a control valve, and a closed glue storage environment is provided through the accommodating cavity to ensure that the resin glue does not deteriorate.

[0004] In order to solve the above technical problems, the technical solution adopted in this application is: to provide a glue injection machine, including: a frame; a glue storage container, which is arranged on the frame, and the glue storage container includes a accommodating cavity for storing resin glue; a driving mechanism, which is telescopically arranged in the accommodating cavity to provide the driving force required for feeding or discharging the resin glue; a control valve, the glue storage container is connected to the control valve, which is used to control the external resin glue to enter the accommodating cavity, and control the resin glue in the accommodating cavity for glue injection.

[0005] The control valve comprises a feed valve and a discharge valve, the glue liquid storage container is connected to the feed valve via a glue liquid input pipe, and the glue liquid storage container is connected to the discharge valve via a glue liquid delivery pipe.

[0006] Among them, the driving mechanism includes a driving motor, a slide rail, a slider and a piston. The driving motor and the slide rail are arranged on the frame, and the slider is arranged on the slide rail. The driving motor can drive the slider to reciprocate along the slide rail. The slider is connected to the piston, and the piston is telescopically arranged in the accommodating cavity.

[0007] The piston comprises a piston head and a piston connecting part, one end of the piston connecting part is connected to the slider, the other end of the piston connecting part is connected to the piston head, and the piston head extends into the accommodating cavity.

[0008] The length of the slide rail is greater than the maximum distance that the piston head can move in the accommodating cavity.

[0009] The glue injection machine is also provided with a temperature control device, which adopts a dual temperature control mode to control the temperature of the resin glue in the accommodating cavity.

[0010] The temperature control device includes a heater, a first temperature sensor and a second temperature sensor. The first temperature sensor is used to measure the actual temperature of the resin glue, and the second temperature sensor is used to measure the actual temperature inside the heater.

[0011] The heater is connected to the first temperature sensor through an external circuit, the first temperature sensor is fixedly arranged in the accommodating cavity, the heater is connected to the second temperature sensor through an internal circuit, and the second temperature sensor is arranged in the heater.

[0012] Among them, the discharge valve is connected to a pressure sensor for detecting the pressure of the injected resin glue and feeding it back to the control system of the glue injection machine.

[0013] Among them, the glue injection machine adopts a constant pressure or constant speed mode to inject the resin glue.

[0014] The beneficial effects of the present application are as follows: different from the prior art, the glue injection machine of the present application has a simple structure and is easy to operate. The feeding and discharging of the resin glue can be conveniently controlled by the control valve. A closed glue storage environment is provided by the accommodating cavity to ensure that the resin glue does not deteriorate. In addition, the control system can be used to control different types of products and injection molds with constant pressure or constant speed. The control methods are diverse and accurate, and the delivery amount, delivery speed and delivery pressure of the resin glue can be flexibly adjusted to achieve better infiltration effects.

[0015] At the same time, the temperature control device provided in the present application uses a dual temperature control mode, in which another temperature control closed loop is contained in one temperature control closed loop, which can effectively and accurately control the temperature of the resin glue liquid, so that the resin glue liquid is in a state of good fluidity and stability, thereby ensuring the production quality of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0017] Figure 1 It is a structural schematic diagram of a glue injection machine 100 in one embodiment of the present application;

[0018] Figure 2 It is a structural schematic diagram of a glue injection machine 100 in another embodiment of the present application. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0020] The present application provides a glue injection machine, which is used to store glue liquid and inject glue liquid into a sealed dipping container during the process of infiltration and curing of fiber products to achieve fiber infiltration. Taking the production of pultruded products as an example, the glue injection machine and the injection mold cooperate to form an injection device, and the injection device injects resin glue liquid into the injection mold through the glue injection machine, so that the yarn is infiltrated and cured through the injection mold to form a pultruded product.

[0021] See also Figure 1 , which is a glue injection machine 100 of an embodiment of the present application, includes a frame 110, a driving mechanism 120, a glue storage container 130 and a control valve 140. The glue storage container 130 is arranged on the frame 110. The glue storage container 130 includes a receiving chamber 131 (the mark in the figure is only for illustration) for storing the resin glue to be injected into the injection mold. The driving mechanism 120 is telescopically arranged in the receiving chamber 131 of the glue storage container 130. The driving mechanism 120 and the glue storage container 130 form a piston structure. The glue storage container 130 is connected to the control valve 140. The control valve 140 controls the external resin glue to enter the glue storage container 130 and controls the resin glue in the glue storage container 130 to enter the injection mold for glue injection. The receiving chamber 131 can seal and store the resin glue to ensure that the resin glue does not change.

[0022] The control valve 140 includes a feed valve 141 and a discharge valve 142. The glue storage container 130 is connected to the feed valve 141 through a glue input pipe 132, and the glue storage container 130 is connected to the discharge valve 142 through a glue delivery pipe 133. When the feed valve 141 is opened, the external resin glue can enter the glue storage container 130 through the glue input pipe 132; when the feed valve 141 is closed, the external resin glue stops entering the glue storage container 130. When the discharge valve 142 is opened, the resin glue in the glue storage container 130 enters the injection mold through the glue delivery pipe 133; when the discharge valve 142 is closed, the resin glue in the glue storage container 130 stops entering the injection mold.

[0023] The driving mechanism 120 can partially extend out or extend into the accommodating chamber 131 to provide the driving force required for feeding or discharging the resin glue. When feeding, the glue input pipe 132 can be connected to the external resin glue through a pipeline (not shown), and the feeding valve 141 is opened. At this time, the driving mechanism 120 partially extends out of the accommodating chamber 131, so that a negative pressure is formed in the accommodating chamber 131. The external resin glue flows into the pipeline under the action of atmospheric pressure and then enters the accommodating chamber 131 through the glue input pipe 132 until the feeding is completed and the feeding valve 141 is closed; when discharging, the glue delivery pipe 133 is connected to the injection port of the injection mold through a pipeline (not shown), and the discharging valve 142 is opened. The driving mechanism 120 partially extends into the accommodating chamber 131, and the resin glue in the accommodating chamber 131 can be driven to enter the injection mold until the injection is completed, and the discharging valve 142 is closed. In actual production, the amount of resin glue injected into the injection mold by the glue injection machine 100 can be controlled according to the production data of the corresponding specification product. Transporting the resin glue by connecting the glue input pipe 132 and the glue delivery pipe 133 can prevent the external environment from polluting the resin glue and prevent the resin glue from deteriorating and affecting product quality.

[0024] In one embodiment, the driving mechanism includes a driving motor 121, a slide rail 122, a slider 123 (the marks in the figure are only for illustration) and a piston (not shown). The driving motor 121 and the slide rail 122 are arranged on the frame 110, and the slider 123 is arranged on the slide rail 122. The driving motor 121 can drive the slider 123 to reciprocate along the slide rail 122. The slider 123 is connected to the piston, and the piston is telescopically arranged in the accommodating chamber 131. The piston includes a piston head and a piston connecting part. One end of the piston connecting part is connected to the slider 123, and the other end of the piston connecting part is connected to the piston head. The piston head extends into the accommodating chamber 131 of the glue storage 130 to form a piston structure, and then the reciprocating motion of the slider 123 can drive the piston head to reciprocate in the accommodating chamber 131 to realize feeding and discharging.

[0025] Combination Figure 1In one application scenario, the driving motor 121 is arranged at the bottom of the frame 110, the slide rail 122 is arranged vertically, and the top of the slide rail 122 is connected to the glue storage container 130. The length of the slide rail 122 is greater than the maximum distance that the piston head can move in the accommodating chamber 131. In this way, when the slider 123 reciprocates on the slide rail 122, the piston head can reach the maximum reciprocating stroke in the accommodating chamber 131, thereby ensuring that the accommodating chamber 131 can be filled with resin glue during feeding and can be emptied of the resin glue during discharging, thereby maximizing the utilization of the space of the accommodating chamber 131. When feeding, the feed valve 141 is opened, and the driving motor 121 drives the slider 123 to move downward along the slide rail 122, so that the piston connection part extends outward from the accommodating chamber 131, so that a negative pressure is formed in the accommodating chamber 131, and the external resin glue enters the accommodating chamber 131 through the glue input pipe 132 under the action of atmospheric pressure until the feeding is completed, and the feed valve 141 is closed; when discharging, the discharging valve 142 is opened, and the driving motor 121 drives the slider 123 to move upward along the slide rail 122, so that the piston connection part extends inward into the accommodating chamber 131, and the resin glue in the accommodating chamber 131 can be driven to enter the injection mold until the injection is completed, and the discharging valve 142 is closed.

[0026] In other embodiments, the driving mechanism may include a cylinder and a piston, or may adopt other existing technologies, which will not be described in detail here.

[0027] In one embodiment, see Figure 2The glue injection machine 100 is also provided with a temperature control device 150. The temperature control device 150 adopts a dual temperature control mode to control the temperature of the resin glue in the accommodating cavity 131 of the glue storage container 130. The temperature control device 150 includes a heater, a first temperature sensor and a second temperature sensor. The heater is connected to an external circuit and an internal circuit. The heater is connected to the first temperature sensor through an external circuit. The first temperature sensor is fixedly arranged in the accommodating cavity 131 of the glue storage container 130 to measure the actual temperature of the stored resin glue. The temperature control device 150 controls the on-off of the external circuit by comparing the actual temperature measured by the first temperature sensor with the set temperature, thereby controlling whether the heater is heated; the heater is connected to the second temperature sensor through an internal circuit. The second temperature sensor is arranged in the heater to measure the actual temperature inside the heater. The temperature control device 150 controls the on-off of the internal circuit by comparing the actual temperature measured by the second temperature sensor with the upper temperature limit of the heater, thereby achieving the purpose of protecting the heater. When the actual temperature measured by the first temperature sensor is less than the set temperature, the external circuit of the temperature control device 150 is closed, and the heater heats the resin glue; when the actual temperature measured by the first temperature sensor is greater than or equal to the set temperature, the external circuit of the temperature control device 150 is disconnected, and the heater stops heating to prevent the resin glue from being too high and causing denaturation; and when the temperature inside the heater measured by the second temperature sensor exceeds the upper temperature limit of the heater, the internal circuit of the temperature control device 150 is disconnected, and the heater stops heating to prevent the heater from being too high and causing failure. The temperature control device 150 adopts a dual temperature control mode. On the one hand, by controlling the on and off of the external circuit, the temperature of the resin glue stored in the glue storage container 130 can be monitored and accurately controlled in real time, ensuring that the resin glue is always in a state of good fluidity and no denaturation during the process of the glue injection machine 100 injecting the resin glue into the injection mold, so that the yarn in the injection mold can be fully infiltrated to ensure product quality; on the other hand, by the on and off of the internal circuit, the heater can be effectively protected, and the safety is good. The heater may be disposed on the outer circumference of the glue storage container 130 so as to uniformly heat the resin glue.

[0028] Furthermore, the discharge valve 142 of the glue injection machine 100 is connected to a pressure sensor for detecting the pressure of the resin glue liquid injected into the injection mold and feeding it back to the control system 160 of the glue injection machine 100. The glue injection machine 100 can adjust the pressure of the injected resin glue liquid by adjusting the glue injection speed. The glue injection machine 100 uses a constant pressure or constant speed mode to inject the resin glue liquid into the injection mold. During the injection process in the constant pressure mode, the pressure of the resin glue liquid in the injection mold is set to fluctuate around the set pressure value according to a certain tolerance, so that the resin glue liquid can achieve a better wetting effect on the yarn. During injection, the set pressure value of the glue injection is first input into the control system 160 of the glue injection machine 100, and then the pressure of the resin glue liquid in the accommodating cavity 131 is adjusted according to the feedback pressure value of the pressure sensor and the set pressure value. When the feedback pressure value is greater than the set pressure value, the glue injection machine 100 reduces the speed of the driving mechanism 120 extending into the accommodating cavity 131 to reduce the glue injection speed, thereby reducing the pressure of the resin glue in the injection mold; when the feedback pressure value is less than the set pressure value, the glue injection machine 100 increases the speed of the driving mechanism 120 extending into the accommodating cavity 131 to increase the glue injection speed, thereby increasing the pressure of the resin glue in the injection mold, so that the pressure of the resin glue in the injection mold always meets the yarn infiltration requirements. During the injection process in the constant speed mode, the set speed value of the glue injection is first input into the control system 160 of the glue injection machine 100, and then the glue injection machine 100 extends the driving mechanism 120 into the accommodating cavity 131 at a constant speed according to the set speed value, so that the resin glue enters the injection mold at a constant speed, which can always keep a sufficient amount of resin glue in the injection mold to ensure the yarn infiltration effect.

[0029] Before glue injection, the control system 160 of the glue injection machine 100 obtains the production data of the pultruded product, including the composition of the resin glue, the pulling speed of the yarn, the heating temperature of the resin glue, the injection mode and other parameters. At the same time, a sufficient amount of resin glue needs to be stored in the glue injection machine 100, that is, the resin glue needs to be sucked in advance. Specifically, the control system 160 of the glue injection machine 100 controls the feed valve 141 to open according to the obtained production data, and controls the drive mechanism 120 to partially extend out of the accommodating chamber 131, so that a negative pressure is formed in the accommodating chamber 131. Under the action of atmospheric pressure, the external resin glue enters the accommodating chamber 131 through the pipeline connected to the external resin glue, the feed valve 141, and the glue input pipe 132 in sequence, until the amount of resin glue stored in the glue injection machine 100 meets the requirements; after the feeding is completed, the drive mechanism 120 is controlled to partially extend into the accommodating chamber 131, and the feed valve 141 is closed after the gas in the accommodating chamber 131 is pushed out.

[0030] When injecting glue, the glue injection machine 100 injects the resin glue into the injection mold. Specifically, the control system 160 of the glue injection machine 100 controls the discharge valve 142 to open according to the obtained production data, and controls the driving mechanism 120 to partially extend into the accommodating cavity 131, driving the resin glue in the accommodating cavity 131 to be injected into the injection mold from the injection port in a constant speed mode or a constant pressure mode through the glue delivery pipe 133, the discharge valve 141, and the pipeline in sequence, until the resin glue in the injection mold can fully infiltrate the yarn, the glue injection is completed, and the control system 160 controls the discharge valve 142 to close. During the production process, if the resin glue in the injection mold is insufficient, the control system 160 repeats the above steps, which will not be repeated.

[0031] During the glue injection process, the temperature control device 150 needs to always control the temperature of the resin glue injected into the injection mold to meet the infiltration requirements. Specifically, the heater of the temperature control device 150 is connected to the first temperature sensor through an external circuit. The temperature control device 150 controls the heater to heat the resin glue in the accommodating cavity 131. The first temperature sensor measures the actual temperature of the resin glue in the accommodating cavity 131. When the actual temperature measured by the first temperature sensor is lower than the set temperature, the heater is controlled to continue to heat the resin glue; when the actual temperature measured by the first temperature sensor is greater than or equal to the set temperature, the heater is controlled to stop heating. During the heating process, the heater and the second temperature sensor are always connected through an internal circuit. The second temperature sensor measures the actual temperature inside the heater. When the second temperature sensor measures that the temperature inside the heater exceeds the upper temperature limit of the heater, the heater is controlled to stop heating.

[0032] The beneficial effects of the present application are as follows: the glue injection machine of the present application has a simple structure and is easy to operate. A closed glue storage environment is provided through the accommodating cavity to ensure that the resin glue does not denature. The feeding and discharging of the resin glue can be conveniently controlled by the control valve, and different types of products and injection molds can be controlled with constant pressure or constant speed through the control system. The control methods are diverse and accurate, and the delivery amount, delivery speed and delivery pressure of the resin glue can be flexibly adjusted to achieve better infiltration effects.

[0033] At the same time, the temperature control device provided in the present application uses a dual temperature control mode, in which another temperature control closed loop is contained in one temperature control closed loop, which can effectively and accurately control the temperature of the resin glue liquid, so that the resin glue liquid is in a state of good fluidity and stability, thereby ensuring the production quality of the product.

[0034] The above description is only an implementation method of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A glue injection machine, characterized in that: The glue injection machine comprises: frame; A glue storage container is arranged on the frame, and the glue storage container includes a containing cavity for storing resin glue; A driving mechanism is telescopically arranged in the accommodating cavity to provide a driving force required for feeding or discharging the resin glue liquid; A control valve, wherein the glue storage container is connected to the control valve, and is used to control the external resin glue to enter the accommodating cavity, and to control the resin glue in the accommodating cavity to be injected.

2. The glue injection machine according to claim 1, characterized in that: The control valve comprises a feed valve and a discharge valve, the glue liquid storage container is connected to the feed valve via a glue liquid input pipe, and the glue liquid storage container is connected to the discharge valve via a glue liquid delivery pipe.

3. The glue injection machine according to claim 1, characterized in that: The driving mechanism includes a driving motor, a slide rail, a slider and a piston. The driving motor and the slide rail are arranged on the frame, and the slider is arranged on the slide rail. The driving motor can drive the slider to reciprocate along the slide rail. The slider is connected to the piston, and the piston is telescopically arranged in the accommodating cavity.

4. The glue injection machine according to claim 3, characterized in that: The piston comprises a piston head and a piston connecting portion, one end of the piston connecting portion is connected to the slider, the other end of the piston connecting portion is connected to the piston head, and the piston head extends into the accommodating cavity.

5. The glue injection machine according to claim 4, characterized in that: The length of the slide rail is greater than the maximum distance that the piston head can move in the accommodating cavity.

6. The glue injection machine according to claim 1, characterized in that: The glue injection machine is also provided with a temperature control device, and the temperature control device adopts a dual temperature control mode to control the temperature of the resin glue in the accommodating cavity.

7. The glue injection machine according to claim 6, characterized in that: The temperature control device includes a heater, a first temperature sensor and a second temperature sensor. The first temperature sensor is used to measure the actual temperature of the resin glue, and the second temperature sensor is used to measure the actual temperature inside the heater.

8. The glue injection machine according to claim 7, characterized in that: The heater is connected to the first temperature sensor via an external circuit, the first temperature sensor is fixedly disposed in the accommodating cavity, the heater is connected to the second temperature sensor via an internal circuit, and the second temperature sensor is disposed in the heater.

9. The glue injection machine according to claim 2, characterized in that: The discharge valve is connected to a pressure sensor for detecting the pressure of the injected resin glue and feeding it back to the control system of the glue injection machine.

10. The glue injection machine according to claim 9, characterized in that: The glue injection machine injects the resin glue solution in a constant pressure or constant speed mode.

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