Color paste feeding mechanism of liquid silica gel feeding machine

Abstract

The utility model discloses a color paste feeding mechanism of a liquid silica gel feeding machine, which comprises a color paste feeding bracket, a color paste storage barrel, a color paste barrel discharge valve, a color paste pumping valve, a color paste pumping driving device and a color paste discharge joint. The color paste liquid pumping driving device can drive the color paste liquid pumping valve to convey color paste stored in the color paste storage barrel to a designated position to be mixed with liquid silica gel, so that the liquid silica gel has a designated color, the operation is stable and reliable, and the feeding efficiency is high. In addition, a metering valve can be additionally arranged, and the metering valve can control the flow of the color paste.

Description

Technical Field

[0001] This utility model relates to the field of liquid silicone feeder technology, and more specifically, to a color paste feeding mechanism for a liquid silicone feeder. Background Technology

[0002] In the production process of liquid silicone, a liquid silicone feeding device 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, cannot add color, and lacks a color paste feeding mechanism. Utility Model Content

[0003] The purpose of this utility model is to overcome the above-mentioned defects in the prior art and provide a color paste feeding mechanism for a liquid silicone feeder, which can transport the color paste to a designated position and mix it with the liquid silicone output from the liquid silicone feeder, so that the liquid silicone has a designated color.

[0004] To achieve the above objectives, this utility model provides a color paste feeding mechanism for a liquid silicone feeder, including a color paste feeding bracket, a color paste storage tank, a color paste tank discharge valve, a color paste extraction valve, a color paste extraction drive device, a color paste discharge connector, and a metering valve. The color paste extraction valve is installed on the color paste feeding bracket. The color paste tank discharge valve is connected between the outlet of the color paste storage tank and the inlet of the color paste extraction valve. The color paste extraction drive device is driven by the shaft of the color paste extraction valve. The color paste discharge connector is installed at the outlet of the color paste extraction valve. The outlet of the color paste discharge connector is connected to the inlet of the metering valve through a color paste output pipe.

[0005] Preferably, the pigment extraction drive device is configured as a pneumatic cylinder, a hydraulic cylinder, or an oil cylinder.

[0006] 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.

[0007] 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.

[0008] Preferably, a pressure gauge is connected to the pigment discharge connector.

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

[0011] 1. The present invention has a reasonable structural design and is equipped with a color paste feeding bracket, a color paste storage tank, a color paste tank discharge valve, a color paste extraction valve, a color paste extraction drive device, and a color paste discharge connector. The color paste extraction drive device can drive the color paste extraction valve to transport the color paste stored in the color paste storage tank to a designated position to mix with the liquid silicone output from the liquid silicone feeder, so that the liquid silicone has a designated color. Its operation is stable and reliable and the feeding efficiency is high.

[0012] 2. This utility model also includes a metering valve, which can control the flow rate of the pigment. Attached Figure Description

[0013] 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.

[0014] Figure 1 This is a schematic diagram of the color paste feeding mechanism provided in this embodiment of the utility model;

[0015] Figure 2 This is a cross-sectional view of the color paste feeding mechanism provided in this embodiment of the utility model;

[0016] Figure 3 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.

[0017] Figure 4 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.

[0018] Figure 5 This is a schematic diagram of the metering valve provided in an embodiment of the present invention;

[0019] Figure 6 This is a cross-sectional view of the metering valve provided in an embodiment of this utility model;

[0020] Figure 7 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

[0021] 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.

[0022] Please refer to Figure 1The present invention provides a color paste feeding mechanism for a liquid silicone feeder, including a color paste feeding bracket 1, a color paste storage tank 2, a color paste tank discharge valve 3, a color paste extraction valve 4, a color paste extraction drive device 5, and a color paste discharge connector 6. The color paste feeding bracket 1 is mounted on a base frame 1, the color paste extraction valve 4 is mounted on the color paste feeding bracket 1, the color paste tank discharge valve 3 is connected between the outlet of the color paste storage tank 2 and the inlet of the color paste extraction valve 4, the color paste extraction drive device 5 is drivenly connected to the shaft of the color paste extraction valve 4, and the color paste discharge connector 6 is mounted at the outlet of the color paste extraction valve 4.

[0023] The components of this embodiment will now be described in detail with reference to the accompanying drawings.

[0024] Specifically, the pigment extraction drive device 5 can preferably be configured as a drive device such as a pneumatic cylinder, hydraulic cylinder or oil cylinder.

[0025] like Figure 2 As shown, the discharge valve 3 of the pigment tank may include a discharge valve body 31, a discharge valve spring 33, and a discharge valve ball 32. The discharge valve body 31 is connected to the lid of the pigment storage tank 2. The upper end of the discharge valve body 31 is provided with a valve body inlet, which is connected to the pigment storage tank 2. The lower end of the discharge valve body 31 is provided with a valve body outlet, which is connected to the pigment extraction valve 4. The discharge valve ball 32 and the discharge valve spring 33 are arranged sequentially from top to top inside the discharge valve body 31.

[0026] like Figure 2 and Figure 3 As shown, the color paste extraction valve 4 includes a cylindrical extraction valve body 41, an extraction valve base 42, an extraction drive shaft 43, an extraction piston 44, and a T-shaped bolt 45. The upper end of the extraction valve body 41 is connected to the outlet of the color paste tank discharge valve 3. The extraction valve base 42 is installed at the bottom of the extraction valve body 41 and communicates with its interior. The extraction valve base 42 is fixedly connected to the color paste supply bracket 1. The upper end of the extraction drive shaft 43 passes through the extraction valve base 42 and extends into the extraction valve body 41. The extraction piston 44 is placed inside the extraction valve body 41. The middle part of the extraction piston 44 is provided with a piston through hole 441 for color paste to pass through. The bolt 45 passes through the piston through hole 411 of the extraction piston 44 and is installed at the upper end of the extraction drive shaft 43. The extraction piston 44 can move up and down between the bolt 45 and the extraction drive shaft 43. The color paste discharge connector 6 is installed at the outlet of the extraction valve base 42.

[0027] Under normal conditions, the discharge valve spring 33 can push the discharge valve ball 32 upward, blocking the valve body inlet of the discharge valve body 31, at which time the pigment storage tank 2 is in the closed state. When the pigment extraction drive device 5 drives the extraction piston 44 downward through the extraction drive shaft 43, the extraction piston 44 will squeeze the pigment at the lower end of the inner cavity of the extraction valve body 41 outward, and will generate a downward suction force on the discharge valve ball 32, which will pull the discharge valve ball 32 downward, causing the discharge valve ball 32 to move downward and away from the valve body inlet of the discharge valve body 31. At this time, the pigment in the pigment storage tank 2 can flow through the interior of the discharge valve body 31 and be transported downward to the pigment extraction valve 4.

[0028] like Figure 3 As shown, when the liquid extraction drive shaft 43 drives the liquid extraction piston 44 to move upward, the piston through hole 441 of the liquid extraction piston 44 is in the open state, the upper end of the bolt 45 does not block the piston through hole 441, and the pigment can flow downward through the piston through hole 441 to the lower end of the inner cavity of the liquid extraction valve body 41.

[0029] like Figure 4 As shown, when the liquid extraction drive shaft 43 drives the liquid extraction piston 44 to move downward, the liquid extraction piston 44 abuts against the upper end of the bolt 45. The upper end of the bolt 45 can block the piston through hole of the liquid extraction piston 44 and keep it in a closed state. The liquid extraction piston 44 can squeeze the pigment at the lower end of the inner cavity of the liquid extraction valve body 41 to the pigment discharge connector 6.

[0030] like Figure 1 As shown, a pressure gauge 7 can be connected to the pigment discharge connector 6, and the pressure gauge 7 is connected to the interior of the pigment discharge connector 6.

[0031] like Figure 5 As shown, the outlet of the pigment discharge connector 6 can also be connected to the inlet of the metering valve 10 through the pigment output pipe 8.

[0032] like Figure 5 , Figure 6 and Figure 7As shown, the metering valve 9 may include a metering valve body 91, a cylinder housing 92, a metering valve core 93, a metering valve discharge sealing ring 94, a metering valve discharge nozzle 95, a metering limit rod 96, a metering adjusting screw 97, a metering valve rear end seat 98, and a digital position display 99. The cylinder housing 92 is installed between the metering valve body 91 and the metering valve rear end seat 98. The cylinder housing 92 has two inlet and outlet ports connected to an air source. The metering valve body 91 has a metering valve material chamber 910 for the color paste to enter. The metering valve discharge nozzle 95 is installed at the head end outlet of the metering valve body 91. The metering valve discharge sealing ring 94 is installed between the metering valve discharge nozzle 95 and the metering valve rear end seat 98. Between the outlet of the metering valve material chamber 910, the tail end of the metering valve core 93 is provided with a valve core piston 931 that is movably installed inside the air chamber of the cylinder housing 92. The head end of the metering valve core 93 passes axially through the metering valve body 91 and is placed in the metering valve material chamber of the metering valve body 91. The head end of the metering limit rod 96 passes through the middle hole of the metering valve rear end seat 98 and is placed behind the valve core piston 931 of the metering valve core 93. The tail end of the metering limit rod 96 is connected to the metering adjustment screw head 97. The metering adjustment screw head 97 is installed in the inner hole of the rotating ring of the digital position display 99. The tail end of the metering adjustment screw head 97 extends out of the digital position display 99.

[0033] 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 head 97 can be displayed on the digital display, making it convenient for users to adjust the metering adjustment screw head 97. For example, if it is rotated one full turn, the digital position display can display 00001.

[0034] When the pigment feeding mechanism delivers the pigment to the metering valve chamber 910 of the metering valve body 91, gas is introduced into the cylinder housing 92. Under the thrust of the gas, the metering valve core 93 can squeeze the pigment to the designated position to mix with the liquid silica gel.

[0035] When it is necessary to adjust the capacity of the metering valve chamber 910 of the metering valve body 91, the metering adjustment screw head 97 can be rotated. This can adjust the depth to which the head end of the metering valve core 93 is inserted into the metering valve chamber 910 before extrusion (i.e., adjust the distance between the head end of the metering valve core 93 and the metering valve outlet sealing ring 94), thereby adjusting the volume of the metering valve chamber 910, achieving the metering effect of the color paste, and controlling the flow rate of the color paste.

[0036] It should be noted that other types of liquid metering valves may also be used as needed, as long as they can measure and control the flow rate of the pigment paste, and are not limited to this embodiment.

[0037] In summary, the present invention has a reasonable structural design. The color paste extraction drive device can drive the color paste extraction valve to transport the color paste stored in the color paste storage tank to a designated position to mix with the liquid silica gel, so that the liquid silica gel has a designated color. Its operation is stable and reliable, and the feeding efficiency is high.

[0038] 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 color paste feeding mechanism for a liquid silica gel feeder, characterized in that: The device includes a pigment supply support, a pigment storage tank, a pigment tank discharge valve, a pigment extraction valve, a pigment extraction drive device, a pigment discharge connector, and a metering valve. The pigment extraction valve is installed on the pigment supply support. 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. The outlet of the pigment discharge connector is connected to the inlet of the metering valve through a pigment output pipe.

2. The color paste feeding mechanism of the liquid silica gel feeder according to claim 1, characterized in that: The pigment extraction drive device is configured as a pneumatic cylinder, hydraulic cylinder, or oil cylinder.

3. The color paste feeding mechanism of the liquid silica gel feeder according to claim 1, 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.

4. The color paste feeding mechanism of the liquid silica gel feeder according to claim 1 or 3, 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.

5. The color paste feeding mechanism of the liquid silica gel feeder according to claim 1, characterized in that: A pressure gauge is connected to the pigment discharge connector.

6. The pigment feeding mechanism of the liquid silica gel feeder 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.

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