Pressure-equalizing glue discharging multi-row glue discharging valve and full-automatic high-efficiency glue dispenser

Abstract

The application discloses a full-automatic high-efficiency dispensing machine comprising a pressure-equalizing multi-dispensing valve, wherein the pressure-equalizing multi-dispensing valve comprises a valve body, reversing rods, pressure rods and a power set; the valve body is provided with a plurality of dispensing channels and a glue storage channel; the reversing rods are a plurality of reversing rods and are provided with reversing channels; the valve body is provided with a glue feeding channel between any two adjacent reversing rods; and the power set can simultaneously rotate the reversing rods so as to make the reversing channels communicate with the glue storage channel and the glue feeding channel or make the reversing channels communicate with the corresponding glue storage channel and the dispensing channel. The pressure-equalizing multi-dispensing valve is configured as the valve body, the reversing rods, the pressure rods and the power set, the glue storage channel is alternately communicated with the glue feeding channel and the dispensing channel through the rotation of the reversing rods, the glue in the glue feeding barrel can be stored in the glue storage channel and then flow into the dispensing channel from the glue storage channel through the reversing channel for dispensing, the dispensing amount is stable and controllable, and the dispensing precision is high.

Description

Technical Field

[0001] This invention relates to LED dispensing machines, and more particularly to a multi-row dispensing valve for equalizing dispensing pressure and a fully automatic high-efficiency dispensing machine. Background Technology

[0002] An LED dispensing machine is an automated device for dispensing and encapsulating chips on LED substrates. The dispensing head of the LED dispensing machine has a dispensing channel, which is connected to a glue tank via an inlet and to the outside via an outlet. During dispensing, glue enters the dispensing channel through the inlet and exits through the outlet. This structure offers advantages such as simplicity and ease of implementation. However, because the glue tank is directly connected to the dispensing channel, the glue dispensing volume is unstable and the dispensing accuracy is low (too much or too little glue), resulting in a low yield rate for LED substrates. Summary of the Invention

[0003] The purpose of this invention is to provide a multi-dispensing valve for equalizing pressure dispensing, so as to solve the problems of unstable dispensing volume and low dispensing accuracy caused by the dispensing channel of the dispensing head of the existing LED dispensing machine being directly connected to the dispensing tank.

[0004] This invention is achieved through the following technical solution:

[0005] A multi-discharge dispensing valve with equal pressure dispensing includes a valve body and a reversing rod, a pressure rod, and a power unit disposed on the valve body. The valve body has several dispensing channels and several dispensing channels. There are several reversing rods, each with a reversing channel. The valve body has a dispensing channel between any two adjacent reversing rods. The reversing channels, dispensing channels, and dispensing channels correspond one-to-one. The power unit enables the reversing rods to rotate simultaneously, connecting each reversing channel to the dispensing channel and the dispensing channel, or connecting each reversing channel to the corresponding dispensing channel and the dispensing channel. When the reversing rods rotate simultaneously, adjacent reversing rods rotate in opposite directions. There are several pressure rods, each corresponding to one of the dispensing channels. The pressure rods are slidably connected within the dispensing channels and can move towards the reversing rods when the reversing channels connect the dispensing channels and the dispensing channels, causing the glue to be discharged from the dispensing channels. The valve body is provided with a feeding hopper that communicates with the dispensing channels.

[0006] Furthermore, several of the reversing rods are arranged side by side in the front-rear direction and each has a gear at one end. The gears on any two adjacent reversing rods mesh with each other. The gear on the foremost or rearmost reversing rod is defined as a side gear. The valve body is equipped with a cylinder, and the output end of the cylinder is equipped with a rack that meshes with the side gear. When the cylinder drives the rack to move up and down, the rack causes several of the gears to rotate simultaneously, and two adjacent gears rotate in opposite directions. The cylinder, the rack, and the several gears constitute the power unit.

[0007] Furthermore, the valve body is provided with a guide block, and the guide block is provided with a main guide groove for the rack to be inserted and to slide in cooperation with the rack; the main guide groove wall is provided with a secondary guide groove, and the rack is provided with a secondary guide bar to slide in cooperation with the secondary guide groove.

[0008] Furthermore, the transmission ratio of any two adjacent gears is 1:1.

[0009] Furthermore, when the reversing channel connects the glue inlet channel and the glue storage channel, the position of the reversing rod is defined as the glue storage position; when the reversing channel connects the glue storage channel and the glue outlet channel, the position of the reversing rod is defined as the glue outlet position. The valve body has an upper abutment part next to the upper end of the rack and a lower abutment part next to the lower end of the rack. When the rack abuts against the upper abutment part, several reversing rods rotate to the glue storage position; when the rack abuts against the lower abutment part, several reversing rods rotate to the glue outlet position.

[0010] Furthermore, the valve body has an assembly channel for accommodating the reversing rod. A guide ring is provided within the assembly channel and encircles the reversing rod. The guide ring communicates with the glue inlet channel, the glue outlet channel, and the glue storage channel. A limiting structure is provided on the guide ring and the assembly channel to restrict the rotation of the guide ring relative to the valve body. A first limiting surface is formed on the outer wall of the guide ring opposite to the glue inlet channel. A second limiting surface is formed on the assembly channel that cooperates with the first limiting surface to restrict the rotation of the guide ring. The first limiting surface and the second limiting surface constitute the limiting structure.

[0011] Furthermore, the valve body has a base and a valve nozzle. The dispensing channel has an upper dispensing branch on the base and a lower dispensing branch on the valve nozzle. The lower dispensing branch communicates with the upper dispensing branch and is connected to the outside via a dispensing port. The valve nozzle is detachably fixed to the base, allowing the spacing between two adjacent lower dispensing branches to be adjustable.

[0012] Furthermore, the upper adhesive outlet extends vertically in a straight line, and the lower adhesive outlet extends horizontally and vertically in an L-shape.

[0013] To address the issues of unstable dispensing volume and low dispensing accuracy caused by the direct connection of the dispensing channel of the dispensing head to the dispensing tank in existing LED dispensing machines, this invention provides a multi-row dispensing valve for pressure equalization dispensing. Correspondingly, a fully automatic and efficient dispensing machine is provided, including a frame and a material conveying mechanism and a dispensing mechanism mounted on the frame. The dispensing mechanism includes a drive mechanism mounted on the frame and the multi-row dispensing valve for pressure equalization dispensing described above, driven by the drive mechanism.

[0014] Furthermore, there are several equal pressure dispensing valves, and these valves are arranged side by side on the frame.

[0015] The advantage of this technical solution lies in that it configures a multi-discharge dispensing valve with equal pressure dispensing as a valve body having an inlet channel, a outlet channel, and an outlet channel; a reversing rod having a reversing channel that can rotate relative to the valve body to connect the inlet channel and the outlet channel or connect the outlet channel and the outlet channel; and a pressure rod slidably connected in the outlet channel to allow the glue to be discharged from the outlet when the reversing channel connects the outlet channel and the outlet channel. Since the reversing channel alternately connects the outlet channel with the inlet channel and the outlet channel, the glue in the supply tank can be transferred to the outlet channel and then flow from the outlet channel through the reversing channel to the outlet channel. Since the amount of glue transferred to the outlet channel each time is small, the amount of glue dispensed is stable and controllable when the pressure rod moves down to dispense glue, resulting in high dispensing accuracy. Furthermore, since there are several reversing rods, and these reversing rods can rotate simultaneously to connect each reversing channel to the glue storage channel and the glue inlet channel, or to connect each reversing channel to the corresponding glue storage channel and the glue outlet channel, the multi-row dispensing valve that enables equal pressure dispensing can achieve multi-row dispensing with high dispensing efficiency. Attached Figure Description

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

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0018] Figure 1 This is a perspective view of the fully automatic high-efficiency dispensing machine disclosed in Example 2 in direction one;

[0019] Figure 2 This is a perspective view of the fully automatic high-efficiency dispensing machine disclosed in Example 2 in direction two;

[0020] Figure 3This is a perspective view of the fully automatic high-efficiency dispensing machine disclosed in Example 1 in direction three;

[0021] Figure 4 yes Figure 3 A magnified view of a section at point A in the middle;

[0022] Figure 5 This is a perspective view of the fully automatic high-efficiency dispensing machine disclosed in Example 1 in direction four;

[0023] Figure 6 yes Figure 5 A magnified view of a section at point B in the middle;

[0024] Figure 7 yes Figure 6 A magnified view of a section at point C;

[0025] Figure 8 This is a cross-sectional view of the fully automatic high-efficiency dispensing machine disclosed in Example 1 (the reversing rod is located at the glue storage position);

[0026] Figure 9 yes Figure 8 A magnified view of a section at point D;

[0027] Figure 10 yes Figure 9 A magnified view of a section at point E in the middle;

[0028] Figure 11 This is a cross-sectional view of the fully automatic high-efficiency dispensing machine disclosed in Example 1 (the reversing rod is located at the dispensing position);

[0029] Figure 12 yes Figure 11 A magnified view of a section at point F. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Example 1: As Figures 3-12As shown, the fully automatic high-efficiency dispensing machine includes a frame 1 and a material conveying mechanism 2 and a dispensing mechanism 3 mounted on the frame 1. The dispensing mechanism 3 includes a drive mechanism 4 mounted on the frame 1 and a multi-dispensing valve 5 that distributes glue evenly and is driven by the drive mechanism 4. The multi-dispensing valve 5 includes a valve body 501 and a reversing rod 502, a pressure rod 503, and a power unit 504 mounted on the valve body 501. The valve body 501 has several dispensing channels 506 and several glue storage channels 507. There are several reversing rods 502 and each has a reversing channel 508. The valve body 501 has a glue inlet channel 509 between any two adjacent reversing rods 502. The machine consists of several reversing channels 508, several dispensing channels 506, and several glue storage channels. Each of the 507 components corresponds to a specific component. The power unit 504 can cause several reversing rods 502 to rotate simultaneously, connecting each reversing channel 508 to the glue storage channel 507 and the glue inlet channel 509, or connecting each reversing channel 508 to the corresponding glue storage channel 507 and the glue outlet channel 506. When several reversing rods 502 rotate simultaneously, two adjacent reversing rods 502 turn in opposite directions. There are several pressure rods 503, each corresponding to a specific glue storage channel 507. The pressure rods 503 are slidably connected within the glue storage channel 507 and can move towards the reversing rod 502 when the reversing channel 508 connects the glue storage channel 507 and the glue outlet channel 506, causing the glue to be discharged from the glue outlet channel 506. The valve body 501 is equipped with a feeding hopper 505 that communicates with the glue inlet channel 509. When the reversing channel 508 connects the glue inlet channel 509 and the glue storage channel 507, the position of the reversing rod 502 is defined as the glue storage position; when the reversing channel 508 connects the glue storage channel 507 and the glue outlet channel 506, the position of the reversing rod 502 is defined as the glue outlet position.

[0032] The dispensing steps of this fully automatic high-efficiency dispensing machine are as follows: First, the reversing rod 502 is rotated to the glue storage position, and the reversing channel 508 connects the glue inlet channel 509 and the glue storage channel 507. The glue flows from the glue inlet channel 509 into the glue storage channel 507 through the reversing channel 508. Next, the reversing rod 502 is rotated to the glue outlet position, and the reversing channel 508 connects the glue storage channel 507 and the glue outlet channel 506. At this time, the glue storage channel 507 is disconnected from the glue inlet channel 509. Finally, the pressure rod 503 moves toward the reversing rod 502, causing the glue to flow from the glue storage channel 507 into the glue outlet channel 506 through the reversing channel 508 and be discharged, thus completing the dispensing process.

[0033] In summary, this embodiment provides a fully automatic and efficient dispensing machine to solve the problems of unstable dispensing volume and low dispensing accuracy caused by the direct connection between the dispensing channel and the dispensing tank of existing LED dispensing machines. This is mainly achieved by configuring a multi-dispensing valve 5 with equal pressure dispensing as a valve body 501 having an inlet channel 509, a dispensing channel 506, and a storage channel 507; a reversing channel 508 that can rotate relative to the valve body 501 to connect the inlet channel 509 and the storage channel 507 or the storage channel 507 and the dispensing channel 506; and a reversing rod 502 slidably connected to the storage channel 506. The pressure rod 503, which connects the glue storage channel 507 and the glue dispensing channel 506 in the reversing channel 508 within the channel 507, causes the glue to be discharged from the glue outlet 532. Since the reversing channel 508 connects the glue storage channel 507 with the glue inlet channel 509 and the glue dispensing channel 506 alternately, the glue in the feed hopper 505 can be transferred to the glue storage channel 507 and then flow from the glue storage channel 507 into the glue dispensing channel 506 through the reversing channel 508. Since the amount of glue transferred to the glue storage channel 507 each time is small, the glue dispensing volume is stable and controllable when the pressure rod 503 moves down to dispense glue, resulting in high glue dispensing accuracy. Furthermore, since there are several reversing rods 502, and these reversing rods 502 can rotate simultaneously to connect each reversing channel 508 to the glue storage channel 507 and the glue inlet channel 509, or to connect each reversing channel 508 to the corresponding glue storage channel 507 and the glue outlet channel 506, the multi-dispensing valve 5 that enables pressure equalization and glue dispensing can achieve multi-dispensing with high dispensing efficiency.

[0034] In this embodiment of the invention, several reversing rods 502 are arranged side by side in the front-rear direction and one end is provided with a gear 510. The gears 510 on any two adjacent reversing rods 502 mesh with each other. The gear 510 provided on the frontmost or rearmost reversing rod 502 is defined as a side gear 511. A cylinder 512 is provided on the valve body 501. A rack 513 that meshes with the side gear 511 is provided on the output end of the cylinder 512. When the cylinder 512 drives the rack 513 to move up and down, the rack 513 causes several gears 510 to rotate simultaneously and two adjacent gears 510 to rotate in opposite directions. The cylinder 512, the rack 513 and the several gears 510 constitute a power unit 504. Since the power unit 504 includes a gear 510 on one end of the reversing lever 502, a cylinder 512 on the valve body 501, and a rack 513 on the output end of the cylinder 512 that meshes with the side gear 511, the power unit 504 can make several reversing levers 502 rotate simultaneously and adjacent reversing levers 502 rotate in opposite directions, and the structure is simple and easy to implement.

[0035] In this embodiment of the invention, the valve body 501 is provided with a guide block 514, and the guide block 514 is provided with a main guide groove 515 for inserting and slidingly engaging with the rack 513. Because the valve body 501 is provided with a guide block 514 that slidesly engages with the rack 513, the rack 513 is stably assembled with the valve body 501 and does not deviate during movement.

[0036] In this embodiment of the invention, a secondary guide groove 516 is provided on the wall of the main guide groove 515, and a secondary guide bar 517 is provided on the rack 513 that slides in cooperation with the secondary guide groove 516. Because the main guide groove 515 has the secondary guide groove 516 and the rack 513 has the secondary guide bar 517 that slides in cooperation with the secondary guide groove 516, the rack 513 is stably assembled with the valve body 501 and does not deviate during movement.

[0037] In this embodiment of the invention, the transmission ratio of any two adjacent gears 510 is 1:1. Since the transmission ratio of any two adjacent gears 510 is 1:1, each gear 510 rotates stably and at the same speed when the rack 513 moves up and down, making operation simple.

[0038] In this embodiment of the invention, the valve body 501 has an upper abutment 518 next to the upper end of the rack 513 and a lower abutment 519 next to the lower end of the rack 513. When the rack 513 abuts against the upper abutment 518, several reversing rods 502 rotate to the glue storage position; when the rack 513 abuts against the lower abutment 519, several reversing rods 502 rotate to the glue dispensing position. The above arrangement ensures stable and accurate glue dispensing from the multi-dispensing valve 5 with equal pressure dispensing.

[0039] In this embodiment of the invention, the direction in which the reversing rod 502 rotates from the glue storage position to the glue dispensing position is defined as the first direction. The reversing channel 508 has a first reversing port 520, a second reversing port 521, and a third reversing port 522. The first reversing port 520, the second reversing port 521, and the third reversing port 522 are arranged sequentially in the first direction. When the reversing rod 502 rotates to the glue storage position, the reversing channel 508 is connected to the glue inlet channel 509 through the first reversing port 520 and to the glue storage channel 507 through the second reversing port 521. When the reversing rod 502 rotates to the glue dispensing position, the reversing channel 508 is connected to the glue storage channel 507 through the third reversing port 522 and to the glue dispensing channel 506 through the first reversing port 522. Since the reversing channel 508 has a first reversing port 520, a second reversing port 521, and a third reversing port 522 arranged sequentially in the first direction, when the reversing rod 502 is turned to the glue storage position, the reversing channel 508 is connected to the glue inlet channel 509 through the first reversing port 520 and to the glue storage channel 507 through the second reversing port 521. When the reversing rod 502 is turned to the glue outlet position, the reversing channel 508 is connected to the glue storage channel 507 through the third reversing port 522 and to the glue outlet channel 506 through the first reversing port 522. Therefore, the glue storage channel 507 can be alternately connected to the glue inlet channel 509 and the glue outlet channel 506 to realize the transfer and dispensing of glue. The structure is simple and easy to implement.

[0040] In this embodiment of the invention, the reversing channel 508 has a first reversing branch 523 and a second reversing branch 524. The second reversing branch 524 is connected to the first reversing branch 523 via a fourth connecting port (not shown in the figure). The first reversing branch 523 extends from the first reversing port 520 to the third reversing port 522, and the second reversing branch 524 extends from the fourth connecting port to the second reversing port 521. The first reversing branch 523 and the second reversing branch 524 are perpendicular to each other. Since the reversing channel 508 has a first reversing branch 523 extending from the first reversing port 520 to the third reversing port 522 and a second reversing branch 524 extending from the fourth connecting port to the second reversing port 521, and the first reversing branch 523 and the second reversing branch 524 are perpendicular to each other, when the glue storage channel 507 is alternately connected with the glue inlet channel 509 and the glue outlet channel 506, the flow of glue is smooth and unobstructed, avoiding channel blockage. At the same time, the reversing rod 502 rotates 90° when it moves from the glue storage position to the glue outlet position, making the operation simple and convenient.

[0041] In this embodiment of the invention, the valve body 501 has an assembly channel (not shown in the figure) for accommodating the reversing rod 502. A guide ring 525 is provided within the assembly channel, encircling the outer periphery of the reversing rod 502. A limiting structure is provided on the guide ring 525 and the assembly channel to restrict the rotation of the guide ring 525 relative to the valve body 501. The outer wall of the reversing rod 502 abuts against the inner wall of the guide ring 525 and can rotate relative to the guide ring 525. The reversing rod 502 and the guide ring 525 are made of the same material. The guide ring 525 is connected to the glue inlet channel 509, the glue outlet channel 506, and the glue storage channel 507, respectively. Both the reversing rod 502 and the guide ring 525 are made of tungsten steel. A first limiting surface 526 is formed on the outer wall of the guide ring 525 facing away from the glue inlet channel 509. A second limiting surface 527 is formed on the assembly channel, cooperating with the first limiting surface 526 to restrict the rotation of the guide ring 525. The first limiting surface 526 and the second limiting surface 527 constitute the limiting structure. Because the outer ring of the reversing rod 502 is provided with a guide ring 525, the outer wall of the reversing rod 502 abuts against the inner wall of the guide ring 525 and can rotate relative to the guide ring 525. Both the reversing rod 502 and the guide ring 525 are made of tungsten steel, thus ensuring high precision in the fit between the reversing rod 502 and the guide ring 525. The reversing rod 502 rotates smoothly and without jamming relative to the guide ring 525 (valve body 501).

[0042] In this embodiment of the invention, the valve body 501 has a base 528 and a valve nozzle 529 detachably fixedly connected to the base 528. The dispensing channel 506 has an upper dispensing branch 530 formed on the base 528 and a lower dispensing branch 531 formed on the valve nozzle 529. The lower dispensing branch 531 communicates with the upper dispensing branch 530 and communicates with the outside through a dispensing port 532. Since the valve body 501 has a base 528 and a valve nozzle 529 detachably fixedly connected to the base 528, and the dispensing channel 506 has an upper dispensing branch 530 formed on the base 528 and a lower dispensing branch 531 formed on the valve nozzle 529, a base 528 can be configured with multiple valve nozzles 529 with different spacing of lower dispensing branches 531 to adapt to substrates with different LED chip spacing, making the application flexible and versatile.

[0043] In this embodiment of the invention, the upper glue outlet channel 530 extends vertically in a straight line, and the lower glue outlet channel 531 extends horizontally and vertically in an L-shape. Because the upper glue outlet channel 530 extends vertically in a straight line, and the lower glue outlet channel 531 extends horizontally and vertically in an L-shape, the glue flow rate is stable and smooth when it is dispensed.

[0044] In this embodiment of the invention, one end of the pressure rod 503, facing away from the reversing rod 502, extends through the exposed port into the glue storage channel 507. The valve body 501 has a sealing groove (not shown in the figure) located on one side of the exposed port and surrounding the pressure rod 503. A sealing ring (not shown in the figure) is embedded in the sealing groove, surrounding the pressure rod 503 and abutting against the pressure rod 503. The end of the pressure rod 503 extending out of the glue storage channel 507 is equipped with a glue dispensing cylinder (not shown in the figure). The pressure rod 503 is driven downward by the glue dispensing cylinder, thus giving the pressure rod 503 good movement accuracy, thereby ensuring precise and controllable glue dispensing volume from the glue dispensing port 532. Furthermore, because the valve body 501 has a sealing groove located on one side of the exposed port and surrounding the pressure rod 503, with a sealing ring embedded in the sealing groove surrounding the pressure rod 503 and abutting against the pressure rod 503, glue overflow from the glue storage channel 507 through the exposed port is prevented.

[0045] Example 2: As Figures 1 to 2 As shown, the difference from Example 1 is that there are several equal-pressure dispensing multi-dispensing valves 5, which are arranged side-by-side on the frame 1. Specifically, there are two equal-pressure dispensing multi-dispensing valves 5. Because there are several equal-pressure dispensing multi-dispensing valves 5, which are arranged side-by-side on the frame 1, the dispensing efficiency of the fully automatic high-efficiency dispensing machine is high.

[0046] The frame 1 includes a base 100 for mounting the dispensing mechanism 3, which is made of marble. Because the base 100 for mounting the dispensing mechanism 3 is made of marble, the movement of the dispensing mechanism 3 is more stable, thus improving the stability of the dispensing process.

[0047] It should be understood that the terms "first," "second," etc., are used in this invention to describe various information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this invention, "first" information can also be referred to as "second" information, and similarly, "second" information can also be referred to as "first" information. In addition, 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, and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0048] The above description provides one or more embodiments in conjunction with specific content, and does not imply that the specific implementation of the present invention is limited to these descriptions. Any methods or structures that are similar to or identical to those of the present invention, or any technical deductions or substitutions made based on the concept of the present invention, should be considered as protected by the present invention.

Claims

1. A multi-discharge dispensing valve for equalizing adhesive pressure, characterized in that, The device includes a valve body and a reversing rod, a pressure rod, and a power unit mounted on the valve body. The valve body has several glue outlet channels and several glue storage channels. There are several reversing rods, each with a reversing channel. The valve body has a glue inlet channel between any two adjacent reversing rods. The several reversing channels, several glue outlet channels, and several glue storage channels correspond one-to-one. The power unit enables the several reversing rods to rotate simultaneously, connecting each reversing channel to the glue storage channel and the glue inlet channel, or connecting each reversing channel to the corresponding glue storage channel and the glue outlet channel. When the several reversing rods rotate simultaneously, adjacent reversing rods rotate in opposite directions. There are several pressure rods, each corresponding one-to-one with several glue storage channels. The pressure rods are slidably connected within the glue storage channels and can move towards the reversing rods when the reversing channels connect the glue storage channel and the glue outlet channel, causing glue to be discharged from the glue outlet channel. The valve body is provided with a feed tank that communicates with the glue inlet channel.

2. The multi-discharge dispensing valve for equalizing pressure dispensing according to claim 1, characterized in that, A number of the aforementioned reversing rods are arranged side by side in the front-rear direction and have a gear at one end. The gears on any two adjacent reversing rods mesh with each other. The gear on the foremost or rearmost reversing rod is defined as a side gear. The valve body is equipped with a cylinder, and the output end of the cylinder is equipped with a rack that meshes with the side gear. When the cylinder drives the rack to move up and down, the rack causes several gears to rotate simultaneously and two adjacent gears to rotate in opposite directions. The cylinder, the rack, and the plurality of gears constitute the power unit.

3. The multi-discharge dispensing valve for equalizing pressure dispensing according to claim 2, characterized in that, The valve body is provided with a guide block, and the guide block is provided with a main guide groove for the rack to be inserted and to slide in cooperation with the rack; The main guide groove has a secondary guide groove on its wall, and the rack has a secondary guide bar that slides in cooperation with the secondary guide groove.

4. The multi-discharge dispensing valve for equalizing pressure dispensing according to claim 2, characterized in that, The transmission ratio of any two adjacent gears is 1:

1.

5. The multi-discharge dispensing valve for equalizing pressure dispensing according to claim 2, characterized in that, When the reversing channel connects the glue inlet channel and the glue storage channel, the position of the reversing rod is defined as the glue storage position. When the reversing channel connects the glue storage channel and the glue outlet channel, the position of the reversing rod is defined as the glue outlet position. The valve body has an upper abutment part next to the upper end of the rack and a lower abutment part next to the lower end of the rack. When the rack abuts against the upper abutment part, several reversing rods rotate to the glue storage position. When the rack abuts against the lower abutment part, several reversing rods rotate to the glue outlet position.

6. The multi-discharge dispensing valve for equalizing pressure dispensing according to claim 1, characterized in that, The valve body has an assembly channel for accommodating the reversing rod. A guide ring is provided in the assembly channel and is arranged around the outer periphery of the reversing rod. The guide ring is connected to the glue inlet channel, the glue outlet channel and the glue storage channel respectively. The guide ring and the assembly channel are provided with a limiting structure to restrict the rotation of the guide ring relative to the valve body. The guide ring has a first limiting surface formed on the outer wall of the glue inlet channel, and the assembly channel has a second limiting surface formed on it, which cooperates with the first limiting surface to restrict the rotation of the guide ring. The first limiting surface and the second limiting surface constitute the limiting structure.

7. The multi-discharge dispensing valve for equalizing pressure dispensing according to claim 1, characterized in that, The valve body has a base and a valve nozzle. The dispensing channel has an upper dispensing branch on the base and a lower dispensing branch on the valve nozzle. The lower dispensing branch is connected to the upper dispensing branch and is connected to the outside through the dispensing port. The valve nozzle is detachably fixed to the base so that the spacing between two adjacent lower dispensing branches is adjustable.

8. The multi-discharge dispensing valve for equalizing pressure dispensing according to claim 7, characterized in that, The upper glue outlet channel extends vertically in a straight line, while the lower glue outlet channel extends horizontally and vertically in an L-shape.

9. A fully automatic high-efficiency dispensing machine, comprising a frame and a material conveying mechanism and a dispensing mechanism mounted on the frame, characterized in that, The dispensing mechanism includes a drive mechanism mounted on the frame and a multi-dispensing valve for equalizing dispensing adhesive as described in any one of claims 1 to 8, driven by the drive mechanism.

10. The fully automatic high-efficiency dispensing machine according to claim 9, characterized in that, There are several equal pressure dispensing valves, and these valves are arranged side by side on the frame.

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