A continuous mixing compound production line

Abstract

The present application relates to a kind of continuous mixing material production line, including main material feeder, auxiliary material feeder, mixing metering machine, main material feeder transports main material to mixing metering machine, auxiliary material feeder at least has 1, auxiliary material feeder transports auxiliary material to mixing metering machine, and mixing metering machine measures main material, auxiliary material according to set proportion;And main material and auxiliary material are mixed into finished material, main material, auxiliary material are mixed into finished material, automatic operation, accurate proportioning reduces labor cost.

Description

Technical Field

[0001] This invention relates to the field of liquid adhesive production lines, and more specifically to a continuous mixing and material preparation production line. Background Technology

[0002] A liquid adhesive production line is a production line used to mix different liquid materials in different proportions to produce another finished liquid. For example, a liquid adhesive production line can mix silicone raw materials and various auxiliary materials together to produce liquid silicone finished materials with various special performance requirements. The main drawback of existing liquid adhesive production lines is that they have a low degree of automation, require manual material handling, have high labor intensity and high cost, and cannot achieve automated production. Summary of the Invention

[0003] To address the aforementioned shortcomings of existing technologies, this invention provides a continuous mixing and material preparation production line, the specific technical solution of which is as follows: A continuous mixing and feeding production line includes a main material feeder, an auxiliary material feeder, and a mixing and metering machine. The main material feeder feeds the main material to the mixing and metering machine. There is at least one auxiliary material feeder that feeds auxiliary materials to the mixing and metering machine. The mixing and metering machine measures the main material and auxiliary materials according to a set ratio and mixes the main material and auxiliary materials to form the finished product.

[0004] As a preferred embodiment of the present invention, it also includes an automatic screen changer, which includes a filter screen holder, a filter screen switching plate, a filter screen, and a screen changing cylinder. The filter screen switching plate is slidably installed in the filter screen holder, and two filter screens are installed side by side in the filter screen switching plate. A material inlet for finished material to enter is provided above the filter screen holder.

[0005] As a preferred embodiment of the present invention, the mixing metering machine includes a main material metering continuous output device, an auxiliary material metering continuous output device, and a mixer. The main material feeder conveys the main material to the main material metering continuous output device, and the auxiliary material feeder conveys the auxiliary material to the auxiliary material metering continuous output device. The main material metering continuous output device and the auxiliary material metering continuous output device are respectively connected to the mixer.

[0006] In a preferred embodiment of the present invention, the main material metering continuous output device includes a first main material driving mechanism, a second main material driving mechanism, a first main material cylinder, a first main material seat, a first main material stop valve, a second main material cylinder, a second main material seat, a second main material stop valve, and an intermediate main material block. The first main material seat is installed above the first main material cylinder, and the second main material seat is installed above the second main material cylinder. The first main material stop valve is installed to the side of the first main material seat, and the second main material stop valve is installed to the side of the second main material seat. An intermediate main material block is installed between the first and second main material stop valves. When the first main material driving mechanism drives the main material in the first main material cylinder to enter the intermediate main material block, the first main material stop valve opens; correspondingly, the second main material stop valve closes, and the main material enters the second main material cylinder from the outside. When the second main material driving mechanism drives the main material in the second main material cylinder to enter the intermediate main material block, the second main material stop valve opens; correspondingly, the first main material stop valve closes, and the main material enters the first main material cylinder from the outside, thereby achieving uninterrupted continuous output of the main material to the mixer.

[0007] As a preferred embodiment of the present invention, the first main material seat and the second main material seat have the same structure. The first main material seat is provided with a main material feeding channel inside and a main material inlet is provided above the first main material seat. A one-way valve is installed at the main material inlet.

[0008] As a preferred embodiment of the present invention, the first main material driving mechanism and the second main material driving mechanism have the same structure. The first main material driving mechanism includes an upper fixed plate, a guide post, a lower fixed plate, a motor, a reducer, a lead screw, a nut, a moving plate, a piston rod, and a guide sleeve. The guide post is installed at the bottom of the upper fixed plate, and the lower fixed plate is installed at the lower end of the guide post. The motor drives the lead screw to rotate through the reducer. The lead screw is threadedly connected to the nut, and the nut is installed on the moving plate. Guide sleeves are installed on both sides of the moving plate, and the guide sleeves fit the guide post. The piston rod is fixedly installed on the moving plate, and the piston rod extends into the first main material cylinder.

[0009] In a preferred embodiment of the present invention, the auxiliary material metering continuous output device includes a first auxiliary material driving mechanism, a second auxiliary material driving mechanism, a first auxiliary material cylinder, a first intermediate material seat, a first auxiliary material stop valve, a second auxiliary material stop valve, a second auxiliary material cylinder, a second intermediate material seat, a third auxiliary material stop valve, a fourth auxiliary material stop valve, a first inlet / outlet block, and a second inlet / outlet block. The first auxiliary material cylinder is mounted above the first auxiliary material driving mechanism, and the first intermediate material seat is mounted above the first auxiliary material cylinder. A first auxiliary material stop valve is mounted on one side of the first intermediate material seat, and a second auxiliary material stop valve is mounted on the other side. A second auxiliary material cylinder is installed above the drive mechanism, and a second intermediate material seat is installed above the second auxiliary material cylinder. A third auxiliary material stop valve is installed on one side of the second intermediate material seat, and a fourth auxiliary material stop valve is installed on the other side. A first inlet / outlet block is installed outside the first and third auxiliary material stop valves, and a second inlet / outlet block is installed outside the second and fourth auxiliary material stop valves. When the first auxiliary material stop valve is open, the second and third auxiliary material stop valves are closed; when the fourth auxiliary material stop valve is open, the second and third auxiliary material stop valves are open; when the first auxiliary material stop valve is closed, the fourth auxiliary material stop valve is closed.

[0010] In a preferred embodiment of the present invention, the first auxiliary material cylinder body is provided with a first auxiliary material cylinder body material chamber, the first intermediate material seat is provided with a first intermediate material channel, the first auxiliary material stop valve is provided with a first opening and closing material channel, the second auxiliary material stop valve is provided with a second opening and closing material channel, the first auxiliary material cylinder body material chamber is connected to the first intermediate material channel, one end of the first intermediate material channel is connected to the first opening and closing material channel and the other end is connected to the second opening and closing material channel, the second auxiliary material cylinder body is provided with a second auxiliary material cylinder body material chamber, the second intermediate material seat is provided with a second intermediate material channel, the third auxiliary material stop valve is provided with a third opening and closing material channel, the fourth auxiliary material stop valve is provided with a fourth opening and closing material channel, the second auxiliary material cylinder body material chamber is connected to the second intermediate material channel, one end of the second intermediate material channel is connected to the third opening and closing material channel and the other end is connected to the fourth opening and closing material channel, the first inlet and outlet block is provided with a first inlet and outlet material channel, the first opening and closing material channel and the third opening and closing material channel are connected to the first inlet and outlet material channel, the second inlet and outlet block is provided with a second inlet and outlet material channel, the second opening and closing material channel and the fourth opening and closing material channel are connected to the second inlet and outlet material channel.

[0011] Beneficial effects: The main material feeder delivers the main material to the mixing and metering machine, and the auxiliary material feeder delivers the auxiliary material to the mixing and metering machine. The mixing and metering machine measures the main material and auxiliary material according to the set ratio and mixes the main material and auxiliary material into finished material. The main material and auxiliary material are mixed to make finished material. The operation is automated, the precise proportioning reduces labor costs. Attached Figure Description

[0012] Figure 1 This is an overall perspective view of the present invention.

[0013] Figure 2 This is a perspective view of the automatic screen changer of the present invention.

[0014] Figure 3 This is a perspective view of the mixing meter machine of the present invention after the hidden enclosure.

[0015] Figure 4 This is a perspective view of the main material metering continuous output device of the present invention.

[0016] Figure 5 This is a front view of the main material metering continuous output device of the present invention.

[0017] Figure 6 yes Figure 5 A cross-sectional view along the AA direction.

[0018] Figure 7 yes Figure 6 A magnified view of point I in the middle.

[0019] Figure 8 This is a side view of the main material metering continuous output device of the present invention.

[0020] Figure 9 yes Figure 8 Cross-sectional view along the BB direction.

[0021] Figure 10 This is a perspective view of the continuous output device for metering auxiliary materials according to the present invention.

[0022] Figure 11 This is a side view of the auxiliary material metering continuous output device of the present invention.

[0023] Figure 12 yes Figure 11 A cross-sectional view along the CC direction.

[0024] Figure 13 yes Figure 12 Enlarged view at point II.

[0025] Figure 14 This is a perspective view of the auxiliary material shut-off valves of the continuous output device for auxiliary material metering of the present invention.

[0026] Figure 15 This is a front view of the auxiliary material shut-off valves of the auxiliary material metering continuous output device of the present invention.

[0027] Figure 16 yes Figure 15 A cross-sectional view along the DD direction. Detailed Implementation

[0028] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings: In the description of this invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the position or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0029] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0030] like Figure 1 As shown, a continuous mixing and feeding production line includes a main material feeder 1, an auxiliary material feeder 2, and a mixing and metering machine 3. The main material feeder 1 feeds the main material to the mixing and metering machine 3. There is at least one auxiliary material feeder 2, which feeds the auxiliary material to the mixing and metering machine 3. The mixing and metering machine 3 measures the main material and auxiliary material according to a set ratio and mixes the main material and auxiliary material to form the finished product.

[0031] like Figure 2 As shown, the continuous mixing and feeding production line also includes an automatic screen changer 4. The automatic screen changer 4 includes a filter screen holder 41, a filter screen switching plate 42, a filter screen, and a screen changing cylinder 43. The filter screen switching plate 42 is slidably installed in the filter screen holder 41. Two filter screens are installed side by side in the filter screen switching plate 42. The filter screen holder 41 is provided with a feed port for the finished material to enter. The mixing metering machine 3 outputs the finished material into the filter screen holder 41. The finished material is filtered by the filter screen. When one of the working filter screens needs to be replaced due to long service time, the screen changing cylinder 43 drives the filter screen switching plate 42 to move, and the filter screen switching plate 42 carries the other filter screen into the filter screen holder 41.

[0032] like Figure 3As shown, the mixing and metering machine 3 includes a main material metering continuous output device 31, an auxiliary material metering continuous output device 32, and a mixer 33. The main material metering continuous output device 31, the auxiliary material metering continuous output device 32, and the mixer 33 are equipped with protective enclosures. The main material feeder 1 conveys the main material to the main material metering continuous output device 31, and the auxiliary material feeder 2 conveys the auxiliary material to the auxiliary material metering continuous output device 32. There are multiple auxiliary material feeders 2. The main material metering continuous output device 31 and the auxiliary material metering continuous output device 32 are respectively connected to the mixer 33. There are multiple mixers 33 connected in series.

[0033] like Figures 4-9 As shown, the main material metering continuous output device 31 includes a first main material drive mechanism 331, a second main material drive mechanism 332, a first main material cylinder 333, a first main material seat 334, a first main material shut-off valve 335, a second main material cylinder 336, a second main material seat 337, a second main material shut-off valve 338, and an intermediate main material passing block 339. There are two first main material cylinders 333 and two second main material cylinders 336. The first main material seat 334 is installed above the first main material cylinder 333, and the second main material seat 337 is installed above the second main material cylinder 336. The first main material shut-off valve 335 is installed to the side of the first main material seat 334, and the second main material shut-off valve 338 is installed to the side of the second main material seat 337. A connecting device is installed between the first main material shut-off valve 335 and the second main material shut-off valve 338. An intermediate main material block 339 is installed, and a mixer is installed in front of the intermediate main material block 339. When the first main material drive mechanism 331 drives the main material in the first main material cylinder 333 to enter the intermediate main material block 339, the first main material shut-off valve 335 opens; correspondingly, the second main material shut-off valve 338 closes, and the main material enters the second main material cylinder 336 from the outside. The second main material cylinder 336 is used for material preparation at this time. When the second main material drive mechanism 332 drives the main material in the second main material cylinder 336 to enter the intermediate main material block 339, the second main material shut-off valve 338 opens; correspondingly, the first main material shut-off valve 335 closes, and the main material enters the first main material cylinder 333 from the outside. The first main material cylinder 333 is used for material preparation at this time, thereby realizing uninterrupted continuous output of main material to the mixer.

[0034] Specifically, the first main material holder 334 and the second main material holder 337 have the same structure. The first main material holder 334 has a main material feeding channel inside, and a main material inlet is located above the first main material holder 334. A one-way valve (not shown) is installed at the main material inlet. The main material feeder 1 drives the main material through the one-way valve into the first main material holder 334 and the second main material holder 337. When feeding, the one-way valve will prevent the material from returning to the main material feeder 1. In addition, the first main material stop valve 335 and the second main material stop valve 338 have opening and closing channels inside. The stop valves control the opening and closing of the opening and closing channels to achieve the function of control and conduction. Specifically, the first main material drive mechanism 331 and the second main material drive mechanism 332 have the same structure. The first main material drive mechanism 331 includes an upper fixed plate 3311, a guide post 3312, a lower fixed plate 3313, a motor 3314, a reducer 3315, a lead screw 3316, a nut 3317, a moving plate 3318, a piston rod 3319, and a guide sleeve 3320. The guide post 3312 is installed at the bottom of the upper fixed plate 3311, and the lower fixed plate 3313 is installed at the lower end of the guide post 3312. The motor 3314 is a servo motor. The motor can precisely control the number of rotations to control the position of the piston rod and thus measure the output. The motor 3314 drives the lead screw 3316 to rotate through the reducer 3315. The lead screw 3316 is threadedly connected to the nut 3317. The nut 3317 is installed in the middle of the moving plate 3318. Guide sleeves 20 are installed on both sides of the moving plate 3318. The guide sleeves 20 are fitted with guide posts 3312. The piston rod 3319 is fixedly installed on the moving plate 3318. There are two piston rods 3319. The piston rods 3319 extend into the first main material cylinder.

[0035] like Figures 10-16 As shown, the auxiliary material metering continuous output device 32 includes a first auxiliary material driving mechanism 321, a second auxiliary material driving mechanism 322, a first auxiliary material cylinder 323, a first intermediate material seat 324, a first auxiliary material shut-off valve 325, a second auxiliary material shut-off valve 326, a second auxiliary material cylinder 327, a second intermediate material seat 328, a third auxiliary material shut-off valve 329, a fourth auxiliary material shut-off valve 3210, a first inlet / outlet block 3211, and a second inlet / outlet block 3212. The first auxiliary material cylinder 323 is installed above the first auxiliary material driving mechanism 321, and the first intermediate material seat 324 is installed above the first auxiliary material cylinder 323. The first auxiliary material shut-off valve 325 is installed on one side of the first intermediate material seat 324, and the second auxiliary material shut-off valve 326 is installed on the other side. The second auxiliary material driving mechanism 322 is located above... A second auxiliary material cylinder 327 is installed, and a second intermediate material seat 328 is installed above the second auxiliary material cylinder 327. A third auxiliary material stop valve 329 is installed on one side of the second intermediate material seat 328, and a fourth auxiliary material stop valve 3210 is installed on the other side. A first inlet / outlet block 3211 is installed outside the first auxiliary material stop valve 325 and the third auxiliary material stop valve 329. A second inlet / outlet block 3212 is installed outside the second auxiliary material stop valve 326 and the fourth auxiliary material stop valve 3210. When the first auxiliary material stop valve 325 is open, the second auxiliary material stop valve 326 and the third auxiliary material stop valve 329 are closed; when the fourth auxiliary material stop valve 3210 is open, the second auxiliary material stop valve 326 and the third auxiliary material stop valve 329 are open; when the first auxiliary material stop valve 325 is closed, the fourth auxiliary material stop valve 3210 is closed.

[0036] Specifically, the first auxiliary material cylinder body 323 has a first auxiliary material cylinder chamber, the first intermediate material seat 324 has a first intermediate material channel 324a, the first auxiliary material stop valve 325 has a first opening and closing material channel 325a, the second auxiliary material stop valve 326 has a second opening and closing material channel 326a, the first auxiliary material cylinder chamber is connected to the first intermediate material channel 324a, one end of the first intermediate material channel 324a is connected to the first opening and closing material channel 325a and the other end is connected to the second opening and closing material channel 326a, the second auxiliary material cylinder body 327 has a second auxiliary material cylinder chamber, the second intermediate material seat 328 has a second intermediate material channel 328a, the third auxiliary material stop valve 329 has a third opening and closing material channel 329a, and the fourth auxiliary material stop valve 3210 has a fourth opening and closing material channel 329a. The material channel 3210a is connected to the material chamber of the second auxiliary material cylinder, which is connected to the second intermediate material channel 328a. One end of the second intermediate material channel 328a is connected to the third opening and closing material channel 329a, and the other end is connected to the fourth opening and closing material channel 3210a. The first inlet and outlet block 3211 is provided with the first inlet and outlet material channel 3211a. The first opening and closing material channel 325a and the third opening and closing material channel 329a are connected to the first inlet and outlet material channel 3211a. The second inlet and outlet block 3212 is provided with the second inlet and outlet material channel 3212a. The second opening and closing material channel 326a and the fourth opening and closing material channel 3210a are connected to the second inlet and outlet material channel 3212a. Both the first inlet and outlet block 3211 and the second inlet and outlet block 3212 are provided with inlet and outlet ports for connecting to the material pipe to transport the auxiliary material to the mixer 33.

[0037] Specifically, the first auxiliary material drive mechanism 321 and the second auxiliary material drive mechanism 322 are similar in structure to the first main material drive mechanism 331 and the second main material drive mechanism 332. They all use a servo motor to drive the lead screw for feeding. The only difference is the change in the size and quantity of the parts, so the specific structure will not be described in detail.

[0038] The working principle of the auxiliary material metering continuous output device 32 is briefly explained below: When the first auxiliary material shut-off valve 325 is open, the second auxiliary material shut-off valve 326 and the third auxiliary material shut-off valve 329 are closed, and the fourth auxiliary material shut-off valve 3210 is open. At this time, the first inlet / outlet channel 3211a is connected to the first opening / closing channel 325a, the first opening / closing channel 325a is connected to the first intermediate channel 324a, the first intermediate channel 324a is connected to the first cylinder material chamber, the second opening / closing channel 326a is closed, causing the first intermediate channel 324a to be disconnected from the second inlet / outlet channel 3212a, the third opening / closing channel 329a is closed, causing the first inlet / outlet channel 3211a to be disconnected from the second intermediate channel 328a, the second cylinder material chamber is connected to the fourth opening / closing channel 3210a, and the fourth opening / closing channel 3210a is connected to the second inlet / outlet channel 3212a. The discharge channel 3212a is controlled by the first auxiliary material drive mechanism 321, which moves the piston rod to the lower position. External auxiliary materials can enter the material chamber of the first cylinder through the first inlet / outlet channel 3211a, the first opening / closing channel 325a, and the first intermediate channel 324a for storage. The first auxiliary material drive mechanism 322 controls the piston rod to move to the upper position, and the material in the material chamber of the second cylinder is pushed out and transported out sequentially through the second intermediate channel 328a, the fourth opening / closing channel 3210a, and the second inlet / outlet channel 3212a. Then, the working state of the auxiliary material stop valve is switched: the first auxiliary material stop valve is closed, the second auxiliary material stop valve is opened, the third auxiliary material stop valve is opened, and the fourth auxiliary material stop valve is closed. The first cylinder is used for material output while the first cylinder is used for material storage. This cycle is repeated to achieve uninterrupted delivery of auxiliary materials and complete the large-capacity continuous output of auxiliary materials.

[0039] The above description is a further detailed explanation of the present invention in conjunction with specific preferred embodiments. It should not be considered that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present invention, and all such deductions or substitutions should be considered to fall within the protection scope of the present invention.

Claims

1. A continuous mixing and feeding production line, characterized in that: It includes a main material feeder, an auxiliary material feeder, and a mixing and metering machine. The main material feeder supplies the main material to the mixing and metering machine. There is at least one auxiliary material feeder, which supplies auxiliary materials to the mixing and metering machine. The mixing and metering machine measures the main material and auxiliary materials according to a set ratio and mixes them into the finished product. The mixing and metering machine includes a main material metering continuous output device, an auxiliary material metering continuous output device, and a mixer. A main material feeder conveys the main material to the main material metering continuous output device, and an auxiliary material feeder conveys the auxiliary material to the auxiliary material metering continuous output device. There are multiple auxiliary material metering continuous output devices. The main material metering continuous output device and the auxiliary material metering continuous output device are each connected to the mixer. The main material metering continuous output device includes a first main material driving mechanism, a second main material driving mechanism, a first main material cylinder, a first main material seat, a first main material stop valve, a second main material cylinder, a second main material seat, a second main material stop valve, and an intermediate main material passing block. The first main material seat is installed above the first main material cylinder, and the second main material seat is installed above the second main material cylinder. The first main material stop valve is installed to the side of the first main material seat, and the second main material stop valve is installed to the side of the second main material seat. The intermediate main material passing block is installed between the first and second main material stop valves. When the first main material driving mechanism drives the main material in the first main material cylinder to enter the intermediate main material passing block, the first main material stop valve opens; correspondingly, the second main material stop valve closes, and the main material enters the second main material cylinder from the outside. When the second main material driving mechanism drives the main material in the second main material cylinder to enter the intermediate main material passing block, the second main material stop valve opens; correspondingly, the first main material stop valve closes, and the main material enters the first main material cylinder from the outside, thereby achieving uninterrupted continuous output of the main material to the mixer. The auxiliary material metering continuous output device includes a first auxiliary material driving mechanism, a second auxiliary material driving mechanism, a first auxiliary material cylinder, a first intermediate material seat, a first auxiliary material stop valve, a second auxiliary material stop valve, a second auxiliary material cylinder, a second intermediate material seat, a third auxiliary material stop valve, a fourth auxiliary material stop valve, a first inlet / outlet block, and a second inlet / outlet block. The first auxiliary material cylinder is mounted above the first auxiliary material driving mechanism, and the first intermediate material seat is mounted above the first auxiliary material cylinder. The first auxiliary material stop valve is mounted on one side of the first intermediate material seat, and the second auxiliary material stop valve is mounted on the other side. The second auxiliary material driving mechanism is mounted above... A second auxiliary material cylinder is installed, and a second intermediate material seat is installed above the second auxiliary material cylinder. A third auxiliary material stop valve is installed on one side of the second intermediate material seat, and a fourth auxiliary material stop valve is installed on the other side. A first inlet / outlet block is installed outside the first and third auxiliary material stop valves, and a second inlet / outlet block is installed outside the second and fourth auxiliary material stop valves. When the first auxiliary material stop valve is open, the second and third auxiliary material stop valves are closed; when the fourth auxiliary material stop valve is open, the second and third auxiliary material stop valves are open; when the first auxiliary material stop valve is closed, the fourth auxiliary material stop valve is closed. The first auxiliary material cylinder body is provided with a first auxiliary material cylinder body material chamber, the first intermediate material seat is provided with a first intermediate material channel, the first auxiliary material stop valve is provided with a first opening and closing material channel, the second auxiliary material stop valve is provided with a second opening and closing material channel, the first auxiliary material cylinder body material chamber is connected to the first intermediate material channel, one end of the first intermediate material channel is connected to the first opening and closing material channel and the other end is connected to the second opening and closing material channel, the second auxiliary material cylinder body is provided with a second auxiliary material cylinder body material chamber, the second intermediate material seat is provided with a second intermediate material channel, the third auxiliary material stop valve is provided with a third opening and closing material channel, the fourth auxiliary material stop valve is provided with a fourth opening and closing material channel, the second auxiliary material cylinder body material chamber is connected to the second intermediate material channel, one end of the second intermediate material channel is connected to the third opening and closing material channel and the other end is connected to the fourth opening and closing material channel, the first inlet and outlet block is provided with a first inlet and outlet material channel, the first opening and closing material channel and the third opening and closing material channel are connected to the first inlet and outlet material channel, the second inlet and outlet block is provided with a second inlet and outlet material channel, the second opening and closing material channel and the fourth opening and closing material channel are connected to the second inlet and outlet material channel.

2. The continuous mixing and feeding production line according to claim 1, characterized in that: It also includes an automatic screen changer, which includes a filter screen holder, a filter screen switching plate, a filter screen, and a screen changing cylinder. The filter screen switching plate is slidably installed inside the filter screen holder, and two filter screens are installed side by side in the filter screen switching plate. The filter screen holder is provided with a material inlet for finished materials to enter.

3. The continuous mixing and feeding production line according to claim 1, characterized in that: The first main material holder and the second main material holder have the same structure. The first main material holder has a main material feeding channel inside and a main material inlet on the top of the first main material holder. A one-way valve is installed at the main material inlet.

4. The continuous mixing and feeding production line according to claim 1, characterized in that: The first main material driving mechanism and the second main material driving mechanism have the same structure. The first main material driving mechanism includes an upper fixed plate, a guide post, a lower fixed plate, a motor, a reducer, a lead screw, a nut, a moving plate, a piston rod, and a guide sleeve. The guide post is installed at the bottom of the upper fixed plate, and the lower fixed plate is installed at the lower end of the guide post. The motor drives the lead screw to rotate through the reducer. The lead screw is threadedly connected to the nut, and the nut is installed on the moving plate. Guide sleeves are installed on both sides of the moving plate, and the guide sleeves fit the guide post. The piston rod is fixedly installed on the moving plate, and the piston rod extends into the first main material cylinder.

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