Liquid silica gel feeding machine with color mixing function

Abstract

The utility model discloses a liquid silica gel feeder with a color mixing function, which comprises a bottom frame, a lifting driving mechanism, a feeding mechanism, a feeding mixer, a pressure stabilizing valve, a switch valve, a color paste feeding mechanism and a metering valve, the color paste feeding mechanism is mounted on the bottom frame, an outlet of the color paste feeding mechanism is connected with an inlet of the metering valve through a color paste output pipe, and the metering valve is connected with the lifting driving mechanism. An outlet of the metering valve is connected with a second inlet of the switch valve. The color mixing device is reasonable in structural design, the color mixing function is added, the color paste feeding mechanism can output color paste to the metering valve, the color paste is mixed with liquid silica gel after being metered by the metering valve, and therefore the liquid silica gel has the specified color.

Description

Technical Field

[0001] This utility model relates to the technical field of liquid silicone feeders, and more specifically, to a liquid silicone feeder with a color mixing function. Background Technology

[0002] In the production process of liquid silicone, liquid silicone feeding equipment is generally required to transport and supply the liquid silicone, thereby injecting it into injection molding machines or other molding equipment. For example, the applicant's earlier patent application, number 202423277471.5, describes a 1:1 liquid silicone feeding machine, which includes a bottom frame, a control box, a lifting drive mechanism, a first hydraulic feeding mechanism, a second lifting drive mechanism, a second hydraulic feeding mechanism, a feeding mixer, a pressure stabilizing valve, and a switching valve. The first and second hydraulic feeding mechanisms can inject liquid silicone from two tanks into the feeding mixer at a 1:1 ratio, and finally open the switching valve to inject the liquid silicone into injection molding machines and other molding equipment. However, this liquid silicone feeding machine can only mix and feed A and B silicone, and cannot add color, lacking a color mixing function. Utility Model Content

[0003] The purpose of this invention is to overcome the above-mentioned defects in the prior art and provide a liquid silicone feeder with color mixing function.

[0004] To achieve the above objectives, this utility model provides a liquid silicone feeder with a color mixing function, including a base frame, a lifting drive mechanism, a feeding mechanism, a feeding mixer, a pressure stabilizing valve, a switching valve, a color paste feeding mechanism, and a metering valve. Two lifting drive mechanisms are provided and respectively mounted on the base frame. The feeding mechanisms are respectively mounted on the two lifting drive mechanisms, and the two lifting drive mechanisms can drive their respective feeding mechanisms to move up and down. The outlets of the two feeding mechanisms are respectively connected to the two inlets of the feeding mixer through their respective outlet pipes. The pressure stabilizing valve is connected between the outlet of the feeding mixer and the first inlet of the switching valve. The switching valve is provided with an injection delivery pipe for conveying the liquid silicone. The color paste feeding mechanism is mounted on the base frame, and the outlet of the color paste feeding mechanism is connected to the inlet of the metering valve through a color paste output pipe. The outlet of the metering valve is connected to the second inlet of the switching valve.

[0005] Preferably, the pigment feeding mechanism includes a pigment feeding bracket, a pigment storage tank, a pigment tank discharge valve, a pigment extraction valve, a pigment extraction drive device, and a pigment discharge connector. The pigment feeding bracket is mounted on a base frame, the pigment extraction valve is mounted on the pigment feeding bracket, the pigment tank discharge valve is connected between the outlet of the pigment storage tank and the inlet of the pigment extraction valve, the pigment extraction drive device is driven by the shaft of the pigment extraction valve, the pigment discharge connector is installed at the outlet of the pigment extraction valve, and the outlet of the pigment discharge connector is connected to the inlet of the metering valve through a pigment output pipe.

[0006] Preferably, the pigment extraction drive device is configured as a pneumatic cylinder, a hydraulic cylinder, or an oil cylinder.

[0007] Preferably, the discharge valve of the pigment tank includes a discharge valve body, a discharge valve spring, and a discharge valve ball. The upper end of the discharge valve body is provided with a valve body inlet, and the lower end of the discharge valve body is provided with a valve body outlet. The discharge valve ball and the discharge valve spring are arranged sequentially from top to top inside the discharge valve body. In normal operation, the discharge valve spring can push the discharge valve ball upward to block the valve body inlet of the discharge valve body.

[0008] Preferably, the pigment extraction valve includes an extraction valve body, an extraction valve base, an extraction drive shaft, an extraction piston, and a bolt. The upper end of the extraction valve body is connected to the outlet of the pigment tank discharge valve. The extraction valve base is installed at the bottom of the extraction valve body and communicates with its interior. The extraction valve base is fixedly connected to the pigment supply bracket. The upper end of the extraction drive shaft passes through the extraction valve base and extends into the extraction valve body. The extraction piston is placed inside the extraction valve body. The middle part of the extraction piston has a piston through hole for pigment to pass through. The bolt passes through the piston through hole of the extraction piston and is installed at the upper end of the extraction drive shaft. When the extraction drive shaft drives the extraction piston to move upward, the piston through hole of the extraction piston is in an open state. When the extraction drive shaft drives the extraction piston to move downward, the upper head of the bolt can block the piston through hole of the extraction piston, thus closing it. The pigment discharge connector is installed at the outlet of the extraction valve base.

[0009] Preferably, the metering valve includes a metering valve body, a cylinder housing, a metering valve core, a metering valve discharge sealing ring, a metering valve discharge nozzle, a metering limit rod, a metering adjusting screw, a metering valve rear end seat, and a digital position display. The cylinder housing is installed between the metering valve body and the metering valve rear end seat. The metering valve body has a metering valve material chamber for the color paste to enter. The metering valve discharge nozzle is installed at the head end outlet of the metering valve body. The metering valve discharge sealing ring is installed between the metering valve discharge nozzle and the outlet of the metering valve material chamber. The tail end of the metering valve core has a valve core piston that is movably installed inside the air chamber of the cylinder housing. The head end of the metering valve core axially passes through the metering valve body and is placed inside the metering valve material chamber of the metering valve body. The head end of the metering limit rod passes through the central hole of the metering valve rear end seat and is placed behind the valve core piston of the metering valve core. The tail end of the metering limit rod is connected to the metering adjusting screw. The metering adjusting screw is installed in the inner hole of the rotating ring of the digital position display, and the tail end of the metering adjusting screw protrudes outside the digital position display.

[0010] Preferably, the lifting drive mechanism includes a first lifting drive cylinder, a second lifting drive cylinder, and a lifting crossbeam. The first and second lifting drive cylinders are respectively mounted on the base frame, and the two ends of the lifting crossbeam are respectively connected to the output rods of the first and second lifting drive cylinders.

[0011] Preferably, the feeding mechanism includes a feeding drive device and a feeding pump for placing liquid silicone raw material in a material tank and conveying the liquid silicone raw material in the material tank to the feeding mixer. The feeding drive device is connected to the feeding pump in a driving connection, and the outlet of the feeding pump is connected to the discharge pipe.

[0012] Preferably, the pressure regulating valve is configured as a spring-loaded pressure regulating valve.

[0013] Preferably, the switching valve is configured as a pneumatic switching valve or an electric switching valve.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] The present invention has a reasonable structural design and is equipped with a color mixing function. The color paste supply mechanism can output the color paste to the metering valve, and after being metered by the metering valve, it is mixed with liquid silica gel, so that the liquid silica gel has the specified color. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the liquid silicone feeder with color mixing function provided in this embodiment of the utility model;

[0018] Figure 2 This is an assembly drawing of the lifting drive mechanism and the feeding mechanism provided in this embodiment of the utility model;

[0019] Figure 3 This is a cross-sectional view of the feeding mechanism provided in an embodiment of the present utility model;

[0020] Figure 4 This is a schematic diagram of the color paste feeding mechanism provided in this embodiment of the utility model;

[0021] Figure 5 This is a cross-sectional view of the color paste feeding mechanism provided in this embodiment of the utility model;

[0022] Figure 6 This is a cross-sectional view of the liquid pumping drive shaft driving the liquid pumping piston to move upward, provided in an embodiment of this utility model.

[0023] Figure 7 This is a cross-sectional view of the liquid pumping drive shaft driving the liquid pumping piston to move downward, as provided in an embodiment of this utility model.

[0024] Figure 8 This is an assembly drawing of the feed mixer, pressure regulating valve, switching valve and metering valve provided in this embodiment of the utility model;

[0025] Figure 9 This is a cross-sectional view of the feed mixer, pressure regulating valve, and switching valve provided in this embodiment of the utility model;

[0026] Figure 10 This is a cross-sectional view of the metering valve provided in an embodiment of this utility model;

[0027] Figure 11 This is an enlarged view (cross-section) of the metering valve in the metering valve material chamber section provided in this embodiment of the utility model. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0029] Please refer to Figure 1 and Figure 6 The present invention provides a liquid silicone feeder with color mixing function, including a base frame 1, a lifting drive mechanism 2, a feeding mechanism 3, a lifting drive mechanism 4, a feeding mechanism 5, a feeding mixer 6, a pressure stabilizing valve 7, a switching valve 8, a color paste feeding mechanism 9, and a metering valve 10. The components of this embodiment will be described in detail below with reference to the accompanying drawings.

[0030] like Figure 1 As shown, lifting drive mechanism 2 and lifting drive mechanism 4 are respectively installed on the base frame 1. The feeding mechanism 3 is longitudinally installed on the lifting drive mechanism 2. The lifting drive mechanism 2 can drive the feeding mechanism 3 to move up and down. The feeding mechanism 5 is longitudinally installed on the lifting drive mechanism 4. The lifting drive mechanism 4 can drive the feeding mechanism 5 to move up and down.

[0031] Specifically, such as Figure 2 As shown, both the lifting drive mechanism 2 and the lifting drive mechanism 4 may include a first lifting drive cylinder 21, a second lifting drive cylinder 22 and a lifting crossbeam 23. The first lifting drive cylinder 21 and the second lifting drive cylinder 22 are respectively mounted on the base frame 1. The two ends of the lifting crossbeam 23 are respectively connected to the output rods of the first lifting drive cylinder 21 and the second lifting drive cylinder 22. The feeding mechanism 3 and the feeding mechanism 5 are respectively mounted on their respective lifting crossbeams 23.

[0032] like Figure 2 and Figure 3 As shown, both the feeding mechanism 3 and the feeding mechanism 5 may include a feeding drive device 31 and a feeding pump 32 for placing liquid silicone raw material in a material tank and conveying the liquid silicone raw material in the material tank to the feeding mixer. The feeding drive device 31 is connected to the feeding pump 32 in a driving connection, and the outlet of the feeding pump 32 is connected to the discharge pipe 11. The discharge port 11 of the feeding mechanism 3 is connected to the first inlet of the feeding mixer 6 through the discharge pipe 11, and the discharge port of the feeding mechanism 5 is connected to the second inlet of the feeding mixer 6 through another discharge pipe 11.

[0033] In this embodiment, the feeding drive device 31 can preferably be configured as a lifting drive device such as a pneumatic cylinder, hydraulic cylinder, or oil cylinder. The feeding pump 32 may include components such as a feeding outer cylinder 321, a pressure plate 322, a feeding drive rod 323, and a feeding piston 324. The feeding drive device 31 is connected to the feeding drive rod 323, and the feeding drive device 31 can drive the feeding piston 324 to move up and down, thereby drawing the liquid silicone raw material in the material tank upward. After passing through the inside of the feeding pump 32, the liquid silicone raw material is output to the feeding mixer through the discharge pipe 11.

[0034] It should be noted that the lifting drive mechanism and feeding mechanism in this example are the same in structure and principle as those in the 1:1 feeding liquid silicone feeder of the applicant's earlier patent application No. 202423277471.5, and will not be described again here.

[0035] The color paste feeding mechanism 9 is installed on the base frame 1, such as Figure 4 and Figure 5 As shown, the pigment feeding mechanism 9 may include a pigment feeding bracket 91, a pigment storage tank 92, a pigment tank discharge valve 93, a pigment extraction valve 94, a pigment extraction drive device 95, and a pigment discharge connector 96. The pigment feeding bracket 91 is mounted on the base frame 1, the pigment extraction valve 94 is mounted on the pigment feeding bracket 91, the pigment tank discharge valve 93 is connected between the outlet of the pigment storage tank 92 and the inlet of the pigment extraction valve 94, the pigment extraction drive device 95 is drivenly connected to the shaft of the pigment extraction valve 94, the pigment discharge connector 96 is mounted at the outlet of the pigment extraction valve 94, and the outlet of the pigment discharge connector 96 is connected to the inlet of the metering valve 10 through the pigment output pipe 13.

[0036] Specifically, the pigment extraction drive device 95 can preferably be configured as a drive device such as a pneumatic cylinder, hydraulic cylinder or oil cylinder.

[0037] like Figure 5 As shown, the discharge valve 93 of the pigment tank may include a discharge valve body 931, a discharge valve spring 933, and a discharge valve ball 932. The discharge valve body 931 is connected to the lid of the pigment storage tank 92. The upper end of the discharge valve body 931 is provided with a valve body inlet, which is connected to the pigment storage tank 92. The lower end of the discharge valve body 931 is provided with a valve body outlet, which is connected to the pigment extraction valve 94. The discharge valve ball 932 and the discharge valve spring 933 are arranged sequentially from top to top inside the discharge valve body 931.

[0038] like Figure 5 and Figure 6As shown, the pigment extraction valve 94 includes a cylindrical extraction valve body 941, an extraction valve base 942, an extraction drive shaft 943, an extraction piston 944, and a T-shaped bolt 945. The upper end of the extraction valve body 941 is connected to the outlet of the pigment tank discharge valve 93. The extraction valve base 942 is installed at the bottom of the extraction valve body 941 and communicates with its interior. The extraction valve base 942 is fixedly connected to the pigment supply bracket 91. The upper end of the extraction drive shaft 943 passes through the extraction valve base. 942 extends into the liquid extraction valve body 941. The liquid extraction piston 944 is placed inside the liquid extraction valve body 941. The middle part of the liquid extraction piston 944 is provided with a piston through hole 9441 for the color paste to pass through. The bolt 945 passes through the piston through hole 9411 of the liquid extraction piston 944 and is installed at the upper end of the liquid extraction drive shaft 943. The liquid extraction piston 944 can move up and down between the bolt 945 and the liquid extraction drive shaft 943. The color paste discharge connector 96 is installed at the outlet of the liquid extraction valve base 942.

[0039] Under normal conditions, the discharge valve spring 933 can push the discharge valve ball 932 upward, blocking the valve inlet of the discharge valve body 931, at which time the pigment storage tank 92 is in the closed state. When the pigment extraction drive device 95 drives the extraction piston 944 downward through the extraction drive shaft 943, the extraction piston 944 will squeeze the pigment at the lower end of the inner cavity of the extraction valve body 941 outward, and will generate a downward suction force on the discharge valve ball 932, which will pull the discharge valve ball 932 downward, causing the discharge valve ball 932 to move downward and away from the valve inlet of the discharge valve body 931. At this time, the pigment in the pigment storage tank 92 can flow through the interior of the discharge valve body 931 and be transported downward to the pigment extraction valve 94.

[0040] like Figure 6 As shown, when the liquid extraction drive shaft 943 drives the liquid extraction piston 944 to move upward, the piston through hole 9441 of the liquid extraction piston 944 is in the open state, the upper end of the bolt 945 does not block the piston through hole 9441, and the pigment can flow downward through the piston through hole 9441 to the lower end of the inner cavity of the liquid extraction valve body 941.

[0041] like Figure 7 As shown, when the liquid extraction drive shaft 943 drives the liquid extraction piston 944 to move downward, the liquid extraction piston 944 abuts against the upper head of the bolt 945. The upper head of the bolt 945 can block the piston through hole of the liquid extraction piston 944 so that it is in a closed state. The liquid extraction piston 944 can squeeze the pigment at the lower end of the inner cavity of the liquid extraction valve body 941 to the pigment discharge connector 96.

[0042] like Figure 4 and Figure 8 As shown, the outlet of the pigment feeding mechanism 9 (i.e. the outlet of the pigment discharge connector) can be connected to the inlet of the metering valve 10 through the pigment output pipe 13.

[0043] like Figure 10 and Figure 11 As shown, the metering valve 10 may include a metering valve body 101, a cylinder housing 102, a metering valve core 103, a metering valve discharge sealing ring 104, a metering valve discharge nozzle 105, a metering limit rod 106, a metering adjusting screw 107, a metering valve rear end seat 108, and a digital position display 109. The cylinder housing 102 is installed between the metering valve body 101 and the metering valve rear end seat 108. The cylinder housing 102 has two inlet and outlet holes connected to an air source. The metering valve body 101 has a metering valve material chamber 1010 for the color paste to enter. The metering valve discharge nozzle 105 is installed at the head end outlet of the metering valve body 101. The metering valve discharge sealing ring 104 is installed between the metering valve discharge nozzle 105 and the rear end seat 108. Between the outlets of the metering valve material chamber 1010, the tail end of the metering valve core 103 is provided with a valve core piston 1031 that is movably installed inside the air chamber of the cylinder housing 102. The head end of the metering valve core 103 axially passes through the metering valve body 101 and is placed inside the metering valve material chamber of the metering valve body 101. The head end of the metering limit rod 106 passes through the middle hole of the metering valve rear end seat 108 and is placed behind the valve core piston 1031 of the metering valve core 103. The tail end of the metering limit rod 106 is connected to the metering adjustment screw head 107. The metering adjustment screw head 107 is installed in the inner hole of the rotating ring of the digital position display 109, and the tail end of the metering adjustment screw head 107 extends out of the digital position display 109.

[0044] In specific implementation, the digital position display 99 can be a commonly available mechanical digital position display (purchased component). The number of rotations of the metering adjustment screw 97 can be displayed on the digital display, making it convenient for users to adjust the metering adjustment screw 97. For example, if it is rotated one full turn, the digital position display can display 00001.

[0045] When the pigment feeding mechanism 9 delivers the pigment to the metering valve chamber 1010 of the metering valve body 101, gas is introduced into the cylinder housing 102. Under the thrust of the gas, the metering valve core 103 can squeeze the pigment into the inside of the switching valve 8 to mix with the liquid silica gel.

[0046] When it is necessary to adjust the capacity of the metering valve chamber 1010 of the metering valve body 101, the metering adjustment screw head 107 can be rotated. This can adjust the depth to which the head end of the metering valve core 103 is inserted into the metering valve chamber 1010 before extrusion (i.e., adjust the distance between the head end of the metering valve core and the metering valve outlet sealing ring), thereby adjusting the volume of the metering valve chamber 1010, achieving the metering effect of the color paste, and controlling the flow rate of the color paste.

[0047] like Figure 8 and Figure 9As shown, the pressure regulating valve 7 is connected between the outlet of the feed mixer 6 and the first inlet of the switching valve 8. The switching valve 8 is provided with an injection delivery pipe 12 for conveying the mixed liquid silicone to a designated location (such as an injection molding machine or other molding equipment). The outlet of the metering valve 10 is connected to the second inlet of the switching valve 8.

[0048] In specific implementation, the pressure regulating valve 7 can preferably be configured as a spring-loaded pressure regulating valve suitable for liquids. Of course, other existing liquid pressure regulating valves can also be used as needed, not limited to this embodiment. The switching valve 8 can preferably be configured as a pneumatic switching valve. Of course, in other embodiments, an electric switching valve or other types of switching valves can also be used.

[0049] It should be noted that the liquid silicone feeder can also use other types of liquid metering valves, as long as they can measure and control the flow rate of the pigment paste, and are not limited to this embodiment.

[0050] In summary, the present invention has a reasonable structural design and adds a color mixing function. The color paste feeding mechanism can output the color paste to the metering valve, and after being metered by the metering valve, it is mixed with liquid silica gel, so that the liquid silica gel has the specified color.

[0051] The above embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.

Claims

1. A liquid silicone feeder with a color mixing function, comprising a base frame, a lifting drive mechanism, a feeding mechanism, a feeding mixer, a pressure stabilizing valve, and a switching valve, wherein two lifting drive mechanisms are provided and respectively mounted on the base frame, the feeding mechanisms are respectively mounted on the two lifting drive mechanisms, the two lifting drive mechanisms can drive their respective feeding mechanisms to move up and down, the outlets of the two feeding mechanisms are respectively connected to the two inlets of the feeding mixer through their respective outlet pipes, the pressure stabilizing valve is connected between the outlet of the feeding mixer and the first inlet of the switching valve, and the switching valve is provided with an injection delivery pipe for conveying the liquid silicone, characterized in that: It also includes a pigment feeding mechanism and a metering valve. The pigment feeding mechanism is mounted on the base frame. The outlet of the pigment feeding mechanism is connected to the inlet of the metering valve through a pigment output pipe. The outlet of the metering valve is connected to the second inlet of the switching valve.

2. The liquid silica gel feeder with color mixing function according to claim 1, characterized in that: The pigment feeding mechanism includes a pigment feeding bracket, a pigment storage tank, a pigment tank discharge valve, a pigment extraction valve, a pigment extraction drive device, and a pigment discharge connector. The pigment feeding bracket is mounted on a base frame, the pigment extraction valve is mounted on the pigment feeding bracket, the pigment tank discharge valve is connected between the outlet of the pigment storage tank and the inlet of the pigment extraction valve, the pigment extraction drive device is driven by the shaft of the pigment extraction valve, the pigment discharge connector is installed at the outlet of the pigment extraction valve, and the outlet of the pigment discharge connector is connected to the inlet of the metering valve through a pigment output pipe.

3. A liquid silica gel feeder with color mixing function according to claim 2, characterized in that: The pigment extraction drive device is configured as a pneumatic cylinder, hydraulic cylinder, or oil cylinder.

4. A liquid silica gel feeder with color mixing function according to claim 2, characterized in that: The discharge valve of the pigment tank includes a discharge valve body, a discharge valve spring, and a discharge valve ball. The upper end of the discharge valve body is provided with a valve body inlet, and the lower end of the discharge valve body is provided with a valve body outlet. The discharge valve ball and the discharge valve spring are arranged sequentially from top to top inside the discharge valve body. In normal operation, the discharge valve spring can push the discharge valve ball upward to block the valve body inlet of the discharge valve body.

5. A liquid silica gel feeder with color mixing function according to claim 2 or 4, characterized in that: The pigment extraction valve includes an extraction valve body, an extraction valve base, an extraction drive shaft, an extraction piston, and a bolt. The upper end of the extraction valve body is connected to the outlet of the pigment tank discharge valve. The extraction valve base is installed at the bottom of the extraction valve body and communicates with its interior. The extraction valve base is fixedly connected to the pigment supply bracket. The upper end of the extraction drive shaft passes through the extraction valve base and extends into the extraction valve body. The extraction piston is placed inside the extraction valve body. The middle part of the extraction piston has a piston through hole for pigment to pass through. The bolt passes through the piston through hole of the extraction piston and is installed at the upper end of the extraction drive shaft. When the extraction drive shaft drives the extraction piston to move upward, the piston through hole of the extraction piston is in the open state. When the extraction drive shaft drives the extraction piston to move downward, the upper end of the bolt can block the piston through hole of the extraction piston, thus closing it. The pigment discharge connector is installed at the outlet of the extraction valve base.

6. A liquid silicone feeder with color mixing function according to claim 1, characterized in that: The metering valve includes a metering valve body, a cylinder housing, a metering valve core, a metering valve discharge sealing ring, a metering valve discharge nozzle, a metering limit rod, a metering adjusting screw, a metering valve rear end seat, and a digital position display. The cylinder housing is installed between the metering valve body and the metering valve rear end seat. The metering valve body has a metering valve material chamber for the color paste to enter. The metering valve discharge nozzle is installed at the head end outlet of the metering valve body. The metering valve discharge sealing ring is installed between the metering valve discharge nozzle and the outlet of the metering valve material chamber. The tail end of the metering valve core has a valve core piston that is movably installed inside the air chamber of the cylinder housing. The head end of the metering valve core axially passes through the metering valve body and is placed inside the metering valve material chamber of the metering valve body. The head end of the metering limit rod passes through the central hole of the metering valve rear end seat and is placed behind the valve core piston of the metering valve core. The tail end of the metering limit rod is connected to the metering adjusting screw. The metering adjusting screw is installed in the inner hole of the rotating ring of the digital position display, and the tail end of the metering adjusting screw protrudes outside the digital position display.

7. A liquid silica gel feeder with color mixing function according to claim 1, characterized in that: The lifting drive mechanism includes a first lifting drive cylinder, a second lifting drive cylinder, and a lifting crossbeam. The first and second lifting drive cylinders are respectively mounted on the base frame, and the two ends of the lifting crossbeam are respectively connected to the output rods of the first and second lifting drive cylinders.

8. A liquid silicone feeder with color mixing function according to claim 1, characterized in that: The feeding mechanism includes a feeding drive device and a feeding pump for placing liquid silica gel raw material in a material tank and conveying the liquid silica gel raw material in the material tank to the feeding mixer. The feeding drive device is connected to the feeding pump in a transmission connection, and the outlet of the feeding pump is connected to the discharge pipe.

9. A liquid silicone feeder with color mixing function according to claim 1, characterized in that: The pressure regulating valve is configured as a spring-loaded pressure regulating valve.

10. A liquid silicone feeder with color mixing function according to claim 1, characterized in that: The switching valve is configured as a pneumatic switching valve or an electric switching valve.

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