A pressure control device and an adhesive application system

Abstract

This utility model discloses a pressure control device and a glue application system, relating to the technical field of glue application systems. The pressure control device includes: an assembly frame; a pressure regulating valve mounted on the assembly frame, the pressure regulating valve including: a mounting housing, a fluid chamber inside the mounting housing, a piston seat in the middle of the fluid chamber, the piston seat separating the second end and the first end of the fluid chamber, a feed hole at the axial position of the piston seat, a piston element connected to the bottom of the fluid chamber by a support spring, the piston element being located at one end of the feed hole; a glue inlet pipe connected to the first end of the fluid chamber via a first branch pipe; an accumulator connected to the glue inlet pipe via a second branch pipe; and a glue outlet pipe connected to the second end of the fluid chamber, the glue outlet pipe being connected to the glue application valve. The above-mentioned pressure control device solves the technical problem of existing glue application systems relying on manual adjustment of a knob to regulate the pressure of the glue in the glue outlet pipe, resulting in large adjustment errors and poor glue application accuracy.

Description

Technical Field

[0001] This utility model relates to the field of adhesive application system technology, and in particular to a pressure control device and an adhesive application system. Background Technology

[0002] In glue application systems, fluctuations in glue pressure can affect dispensing accuracy. Existing glue application systems primarily rely on manual adjustment of knobs to regulate glue pressure in the dispensing line, resulting in significant adjustment errors and failing to effectively address the dispensing accuracy problem. Therefore, this paper proposes a pressure control device and glue application system to solve the aforementioned issues. Utility Model Content

[0003] The purpose of this invention is to provide a pressure control device and a glue application system, which solves the technical problems of existing glue application systems that rely on manual adjustment of knobs to regulate the pressure of glue in the glue dispensing pipeline, resulting in large adjustment errors and poor glue dispensing accuracy.

[0004] To achieve the above objectives, this utility model provides a pressure control device, comprising: an assembly frame;

[0005] A pressure regulating valve is mounted on the mounting frame. The pressure regulating valve includes: a mounting housing, a fluid chamber inside the mounting housing, a piston seat in the middle of the fluid chamber, the piston seat separating the second end and the first end of the fluid chamber, a feed hole communicating between the second end and the first end of the fluid chamber at the axial position of the piston seat, a piston member connected to the bottom of the fluid chamber by a support spring, the piston member being located at one end of the feed hole, and the piston member being able to be driven to reciprocate along the axial direction of the piston seat to adjust the gap between the piston seat and the piston member;

[0006] The glue inlet pipe is connected to the first end of the fluid chamber via a first branch pipe, and the glue inlet pipe is used to input glue into the fluid chamber.

[0007] The glue outlet pipe is connected to the second end of the fluid chamber, and the glue outlet pipe is connected to the glue application valve;

[0008] An accumulator is connected to the glue inlet pipe via a second branch pipe. The accumulator is used to adjust the pressure of the glue in the glue inlet pipe according to the pressure of the glue in the glue outlet pipe.

[0009] Preferably, a movable column is slidably disposed at the first end of the fluid chamber, and a ejector pin is connected to the bottom of the movable column. The movable column can be driven to reciprocate along the axial direction of the piston seat, so that the ejector pin holds or moves away from the top of the piston.

[0010] Preferably, a diaphragm is provided at the first end of the mounting housing, the movable column is provided on the bottom surface of the diaphragm, the upper part of the diaphragm is combined with the mounting housing to form a sealed cavity, an air inlet is provided at the top of the mounting housing, the air inlet is connected to the sealed cavity, a proportional pressure valve is provided on the assembly frame, and the proportional pressure valve is connected to the air inlet through an air inlet pipe.

[0011] Preferably, an assembly block is provided at the first end of the fluid chamber, and an assembly hole is provided at the axial position of the assembly block, the assembly hole being slidably connected to the movable column.

[0012] Preferably, the bottom surface of the assembly block is provided with a lower diaphragm for sealing the top of the fluid chamber.

[0013] Preferably, an annular groove is provided at the bottom of the movable column, and a return spring is coaxially provided on the outer side of the movable column in the circumferential direction. The upper end of the return spring is connected to the end face of the annular groove, and the lower end of the return spring is connected to the top surface of the assembly block.

[0014] Preferably, the mounting housing is provided with an inlet and an outlet, the inlet being connected to the first branch pipe and the outlet being connected to the outlet pipe.

[0015] Preferably, a pressure sensor is provided at the glue outlet position to detect the pressure of the glue when it is output from the fluid chamber.

[0016] Preferably, a pressure relief pipe is provided on the dispensing pipe.

[0017] An adhesive application system, comprising the pressure control device described in any of the preceding claims.

[0018] Compared to the aforementioned background technology, the pressure control device provided by this utility model has the following beneficial effects: by controlling the reciprocating motion of the driven piston along the axial direction of the piston seat, the gap between the piston seat and the piston can be adjusted, and the flow rate of glue in the fluid chamber can be precisely controlled, thereby accurately controlling the pressure of the glue in the dispensing pipe, reducing adjustment errors, and ensuring the dispensing accuracy of the glue valve; moreover, the accumulator can store excess glue in the glue inlet pipe and also release the stored glue, so as to adjust the pressure of the glue in the glue inlet pipe according to the pressure of the glue in the dispensing pipe. When the pressure of the glue output from the fluid chamber increases, the accumulator stores excess glue in the glue inlet pipe; when the gap between the piston seat and the piston decreases, the accumulator releases the stored glue to offset the pressure change of the glue in the dispensing pipe, stabilize the pressure of the glue in the dispensing pipe, and further ensure the dispensing accuracy of the glue valve. Attached Figure Description

[0019] 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 only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0020] Figure 1 A perspective view of the pressure control device provided in an embodiment of this utility model;

[0021] Figure 2 This is a cross-sectional schematic diagram of the pressure regulating valve provided in an embodiment of the present invention.

[0022] Specifically, 1-Assembly frame; 2-Mounting housing; 201-Glue inlet; 202-Glue outlet; 3-Fluid chamber; 4-Piston seat; 401-Feed hole; 5-Support spring; 6-Piston component; 7-Glue inlet pipe; 8-First branch pipe; 9-Accumulator; 10-Second branch pipe; 11-Glue outlet pipe; 12-Moving column; 1201-Annular groove; 13-Reset spring; 14-Ejector pin; 15-Diaphragm; 16-Sealing cavity; 17-Air inlet; 18-Proportional pressure valve; 19-Assembly block; 20-Lower diaphragm; 21-Pressure sensor; 22-Pressure relief pipe; 23-Shut-off ball valve. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] like Figure 1 and Figure 2 As shown, in order to achieve the above objectives, this utility model provides a pressure control device, including: an assembly frame 1 and a pressure regulating valve, an inlet pipe 7, an accumulator 9 and an outlet pipe 11 disposed on the assembly frame 1.

[0026] The pressure regulating valve includes: a mounting housing 2 mounted on an assembly frame 1; a fluid chamber 3 inside the mounting housing 2 for the passage of adhesive; a piston seat 4 in the middle of the fluid chamber 3, separating the second end and the first end of the fluid chamber 3; specifically, the piston seat 4 separates the upper end and the lower end of the fluid chamber 3; furthermore, a feed hole 401 is provided at the axial position of the piston seat 4, connecting the second end and the first end of the fluid chamber 3. Simultaneously, a piston 6 is provided at the bottom of the fluid chamber 3, the piston 6 being spherical in shape, preferably a steel ball; and the lower part of the piston 6 is connected to the bottom of the fluid chamber 3 by a support spring 5, the extension direction of which is consistent with the axial direction of the piston seat 4.

[0027] The first end of the fluid chamber 3 is connected to the glue inlet pipe 7 through the first branch pipe 8. The glue inlet pipe 7 is used to input glue into the fluid chamber 3. The second end of the fluid chamber 3 is connected to the glue outlet pipe 11. The glue outlet pipe 11 is connected to the glue application valve.

[0028] It should be noted that the piston 6 is located at one end of the feed hole 401. By controlling the reciprocating movement of the piston 6 along the axis of the piston seat 4, the gap between the piston seat 4 and the piston 6 can be adjusted to precisely control the amount of glue passing through the fluid chamber 3. This allows for precise control of the glue pressure in the glue dispensing pipe 11, effectively reducing adjustment errors and ensuring the glue dispensing accuracy of the glue dispensing valve.

[0029] The glue inlet line 7 is connected to the accumulator 9 via the second branch line 10. The accumulator 9 can store excess glue in the glue inlet line 7 and also release the stored glue into the glue inlet line 7. Specifically, when the pressure of the glue output from the fluid chamber 3 increases, the accumulator 9 stores excess glue in the glue inlet line 7; when the gap between the piston seat 4 and the piston 6 decreases, the accumulator 9 releases the stored glue to offset the pressure change of the glue in the glue outlet line 11, stabilize the pressure of the glue in the glue outlet line 11, and further ensure the glue dispensing accuracy of the glue applicator. In addition, a shut-off ball valve 23 is installed in the second branch line 10 to control the opening and closing of the second branch line 10.

[0030] In use, the control drive piston 6 reciprocates along the axis of piston seat 4 to adjust the gap between piston seat 4 and piston 6, thereby controlling the amount of glue passing through fluid chamber 3. Glue inlet pipe 7 delivers glue into fluid chamber 3 through first branch pipe 8. Glue is input to glue outlet pipe 11 through fluid chamber 3. Glue in glue outlet pipe 11 is further discharged stably through glue application valve for glue application.

[0031] In some embodiments of this invention, a movable column 12 is slidably disposed at the first end of the fluid chamber 3. The axis of the movable column 12 is aligned with the axis of the piston seat 4. A ejector pin 14 is connected to the bottom of the movable column 12, and the ejector pin 14 is located directly above the piston 6. The movable column 12 can be driven to reciprocate along the axis of the piston seat 4, causing the ejector pin 14 to press against or move away from the top of the piston 6. When the movable column 12 is driven to move downward along the axis of the piston seat 4, the ejector pin 14 presses against the top of the piston 6, causing the piston 6 to gradually move away from the lower end of the piston seat 4, increasing the gap between the piston seat 4 and the piston 6. At this time, the support spring 5 is compressed and possesses elastic potential energy. When the movable column 12 is driven to move upward along the axis of the piston seat 4, the ejector pin 14 moves away from the top of the piston 6, and the support spring 5 extends back to its initial length, causing the top of the piston 6 to gradually move closer to the lower end of the piston seat 4, decreasing the gap between the piston seat 4 and the piston 6.

[0032] Optionally, a diaphragm 15 is provided at the first end of the mounting housing 2. A movable column 12 is provided on the bottom surface of the diaphragm 15. The upper part of the diaphragm 15 is combined with the mounting housing 2 to form a sealed cavity 16. An air inlet 17 is provided at the top of the mounting housing 2. A proportional pressure valve 18 is provided on the mounting frame 1. The proportional pressure valve 18 is connected to the air inlet 17 through an air inlet pipe. The air inlet 17 is connected to the sealed cavity 16. Gas is supplied to the proportional pressure valve 18 from the front triplet. The proportional pressure valve 18 inputs gas into the sealed cavity 16 through the air inlet pipe. Under the action of gas pressure, the bottom surface of the diaphragm 15 moves towards the piston seat 4, thereby precisely controlling the descent of the movable column 12. When the proportional pressure valve 18 stops supplying gas to the sealed cavity 16, the bottom surface of the diaphragm 15 moves away from the piston seat 4 under the action of gas pressure, thereby precisely controlling the descent of the movable column 12.

[0033] In some embodiments of this utility model, an assembly block 19 is provided at the first end of the fluid chamber 3, and an assembly hole is provided at the axial position of the assembly block 19. The axis of the assembly hole is consistent with the axis of the moving column 12. The assembly hole is slidably connected to the moving column 12. Through the sliding cooperation between the assembly hole and the moving column 12, the movement path of the moving column 12 can be effectively controlled, thereby improving the fitting accuracy between the ejector pin 14 and the piston 6, effectively ensuring the precise control of the gap between the piston seat 4 and the piston 6, and thus precisely controlling the amount of glue passing through the fluid chamber 3, ensuring the glue dispensing accuracy of the glue valve.

[0034] Optionally, a lower diaphragm 20 is provided on the bottom surface of the assembly block 19. The lower diaphragm 20 can seal the top of the fluid chamber 3 to prevent the glue in the fluid chamber 3 from entering above, so as to ensure that the moving column 12 and the assembly block 19 are always stably engaged.

[0035] In some embodiments of this utility model, an annular groove 1201 is provided at the bottom of the moving column 12. The annular groove 1201 is coaxially arranged on the outer circumferential side of the moving column 12. A return spring 13 is coaxially arranged on the outer circumferential side of the moving column 12. The upper end of the return spring 13 is connected to the end face of the annular groove 1201, and the lower end of the return spring 13 is connected to the top surface of the assembly block 19. When the proportional pressure valve 18 inputs gas into the sealed cavity 16 through the air inlet pipe, and the bottom surface of the diaphragm 15 moves towards the piston seat 4 under the action of gas pressure, the moving column 12 descends, and the return spring 13 is compressed and has elastic potential energy. When the proportional pressure valve 18 stops supplying gas to the sealed cavity 16, and the bottom surface of the diaphragm 15 moves away from the piston seat 4 under the action of gas pressure, the return spring 13 extends and returns to its initial state, causing the moving column 12 to rise rapidly.

[0036] It should be noted that the mounting housing 2 is provided with an inlet 201 and an outlet 202. The inlet 201 is connected to the first branch pipe 8, and the outlet 202 is connected to the outlet pipe 11. In addition, the inlet 201 is connected to the lower end of the fluid chamber 3, and the outlet 202 is connected to the upper end of the fluid chamber 3.

[0037] In some embodiments of this invention, a pressure sensor 21 is provided at the glue outlet 202 position, which can detect the pressure of the glue when it is output from the fluid chamber 3. Optionally, based on the detected pressure of the glue when it is output from the fluid chamber 3, the pressure supplied by the proportional pressure valve 18 is controlled, and the gap between the piston seat 4 and the piston 6 in the pressure regulating valve is flexibly controlled, so that the pressure of the glue when it is output from the fluid chamber 3 is always kept stable.

[0038] In some embodiments of this invention, a pressure relief pipe 22 is provided on the glue dispensing pipe 11. After glue application is stopped, the glue inlet pipe 7, glue outlet pipe 11, and fluid chamber 3 are quickly discharged through the pressure relief pipe 22, ensuring that the glue inlet pipe 7, glue outlet pipe 11, and fluid chamber 3 remain clean at all times. Additionally, a control valve is provided in the pressure relief pipe 22 to control the opening and closing of the pressure relief pipe 22.

[0039] In some embodiments of this utility model, a control system is also provided. The control system is connected to the proportional pressure valve 18, the accumulator 9, the shut-off ball valve 23, and the pressure sensor 21. The control system can set the pressure value when the glue is output from the fluid chamber 3, thereby controlling the pressure of the proportional pressure valve 18 supplying air to the pressure regulator, changing the pressure adjustment range of the pressure regulator, that is, adjusting the gap between the piston seat 4 and the piston 6, thereby controlling the pressure when the glue is output from the fluid chamber 3. The whole process is automatically controlled without manual intervention, saving manpower and reducing adjustment errors.

[0040] The working principle of the utility model is as follows: the proportional pressure valve 18 inputs gas into the sealed cavity 16 through the air inlet pipe. Under the action of gas pressure, the bottom surface of the diaphragm 15 moves towards the piston seat 4, thereby precisely controlling the descent of the moving column 12. The moving column 12 pushes the ejector pin 14 to hold the top of the piston 6, so that the piston 6 gradually moves away from the lower end of the piston seat 4, adjusting the gap between the piston seat 4 and the piston 6 to a suitable value, precisely controlling the amount of glue passing through the fluid chamber 3, and thus controlling the pressure when the glue is output from the fluid chamber 3. The glue inlet pipe 7 delivers glue into the fluid chamber 3 through the first branch pipe 8. The glue is input into the glue outlet pipe 11 through the fluid chamber 3. The glue in the glue outlet pipe 11 is further stably discharged through the glue application valve for glue application.

[0041] In addition to the pressure control device described above, this utility model also provides a glue application system that includes the pressure control device disclosed in the above embodiments. For the structure of other parts of the glue application system, please refer to the prior art, and it will not be described again here.

[0042] In summary, by controlling the reciprocating motion of the drive piston 6 along the axial direction of the piston seat 4, the gap between the piston seat 4 and the piston 6 is adjusted, and the amount of glue passing through the fluid chamber 3 is precisely controlled. This allows for precise control of the glue pressure in the glue dispensing pipe 11, reducing adjustment errors and effectively ensuring the glue dispensing accuracy of the glue dispensing valve.

[0043] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0044] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of this utility model.

Claims

1. A pressure control device, characterized by, include: Assembly rack; A pressure regulating valve is mounted on the mounting frame. The pressure regulating valve includes: a mounting housing, a fluid chamber inside the mounting housing, a piston seat in the middle of the fluid chamber, the piston seat separating the second end and the first end of the fluid chamber, a feed hole communicating between the second end and the first end of the fluid chamber at the axial position of the piston seat, a piston member connected to the bottom of the fluid chamber by a support spring, the piston member being located at one end of the feed hole, and the piston member being able to be driven to reciprocate along the axial direction of the piston seat to adjust the gap between the piston seat and the piston member; The glue inlet pipe is connected to the first end of the fluid chamber via a first branch pipe, and the glue inlet pipe is used to input glue into the fluid chamber. The glue outlet pipe is connected to the second end of the fluid chamber, and the glue outlet pipe is connected to the glue application valve; An accumulator is connected to the glue inlet pipe via a second branch pipe. The accumulator is used to adjust the pressure of the glue in the glue inlet pipe according to the pressure of the glue in the glue outlet pipe.

2. A pressure control device according to claim 1, wherein A movable column is slidably disposed at the first end of the fluid chamber. A pin is connected to the bottom of the movable column. The movable column can be driven to reciprocate along the axial direction of the piston seat, so that the pin presses against or moves away from the top of the piston.

3. A pressure control device according to claim 2, wherein A diaphragm is provided at the first end of the mounting housing, and the movable column is provided on the bottom surface of the diaphragm. The upper part of the diaphragm is combined with the mounting housing to form a sealed cavity. An air inlet is provided at the top of the mounting housing and the air inlet is connected to the sealed cavity. A proportional pressure valve is provided on the assembly frame and the proportional pressure valve is connected to the air inlet through an air inlet pipe.

4. A pressure control device according to claim 2, wherein An assembly block is provided at the first end of the fluid chamber, and an assembly hole is provided at the axial position of the assembly block, the assembly hole being slidably connected to the movable column.

5. A pressure control device according to claim 4, wherein The bottom surface of the assembly block is provided with a lower diaphragm for sealing the top of the fluid chamber.

6. A pressure control device according to claim 4, wherein The bottom of the movable column is provided with an annular groove, and a return spring is coaxially provided on the outer side of the movable column in the circumferential direction. The upper end of the return spring is connected to the end face of the annular groove, and the lower end of the return spring is connected to the top surface of the assembly block.

7. A pressure control device according to claim 1, wherein The mounting housing is provided with an inlet and an outlet for adhesive. The inlet is connected to the first branch pipe, and the outlet is connected to the outlet pipe.

8. A pressure control device according to claim 7, wherein A pressure sensor is installed at the glue outlet to detect the pressure of glue output from the fluid chamber.

9. A pressure control device according to any one of claims 1-8, characterized in that A pressure relief pipe is installed on the dispensing pipe.

10. A gluing system characterized by, The pressure control device includes any one of claims 1-9.

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