CN-121972374-A - Paste coating equipment and control method

Abstract

The application discloses paste coating equipment and a control method, wherein the paste coating equipment comprises a paste feeding system, the paste feeding system comprises a base, a screw pump, a support flexible connection, a vibrating motor, a storage box, a pressure feeding component, a pressure sensor and a glue feeding hose, the vibrating motor is connected with the storage box and used for vibrating the paste in the process of feeding the paste into the storage box and eliminating air holes generated in the process of feeding the paste, the pressure feeding component is connected with the storage box and used for conveying the paste in the storage box into the screw pump through pressure in the feeding process, and the screw pump is arranged between the pressure feeding component and the glue feeding hose and used for conveying the paste into the glue feeding hose. The pressure feeding assembly connected with the storage box is arranged, paste can be pushed to the inlet end of the screw pump by applying pressure in the feeding stage, the problems that the paste is poor in fluidity and difficult to enter the pump body by self weight are solved, and the vacuum suction phenomenon of the screw pump caused by insufficient feeding at the inlet is effectively avoided.

Inventors

• LI MING
• SUN MINGHU
• WANG WENQIANG
• LIU CHAO
• CHENG LEYI
• CHEN HAIDONG

Assignees

• 潍柴动力股份有限公司
• 潍柴(潍坊)材料成型制造中心有限公司

Dates

Publication Date

20260505

Application Date

20260326

Claims (10)

1. 1. The paste coating equipment is characterized by comprising a paste feeding system; the paste feeding system comprises a base, a screw pump, a vibrating motor, a storage box, a pressure feeding component, a pressure sensor and a glue feeding hose; the vibration motor is connected with the storage box and is used for vibrating the paste in the process of feeding the paste into the storage box, so that air holes generated during feeding are eliminated; the pressure feeding assembly is connected with the storage box and is used for conveying the paste in the storage box into the screw pump through pressure in the feeding process; the screw pump is arranged between the pressure feeding assembly and the glue supply hose and used for conveying paste into the glue supply hose.
2. 2. The paste coating apparatus as claimed in claim 1, further comprising a support flexible connection disposed between the base and the storage tank for supporting the storage tank and isolating vibration generated by the vibration motor during the charging process.
3. 3. The paste coating apparatus as claimed in claim 1, further comprising a soft feed connection disposed between the storage tank and the screw pump for counteracting vibration of the vibration motor during feeding while transporting the paste.
4. 4. The paste coating apparatus according to claim 1, further comprising a mechanical arm, a pressure sensor provided on the paste supply hose, and a paste coating jig assembly provided on the mechanical arm and connected to the paste supply hose.
5. 5. The paste application apparatus as claimed in claim 4, wherein the paste application jig assembly is integrated with an automatic valve, a visual positioning sensor, and a strip detecting sensor; the automatic valve is used for controlling the terminal pressure and the coating flow of the paste; the visual positioning sensor is used for positioning the incoming sand mould; The adhesive tape detection sensor is used for detecting the width of the adhesive tape in real time in the coating process.
6. 6. The paste application apparatus of claim 1, further comprising a screw pump motor and a coupling; The screw pump motor is used for outputting a rotating force to the screw pump; The coupler is used for connecting the screw pump and the screw pump motor and transmitting the rotating power.
7. 7. The paste application apparatus according to claim 1, further comprising a discharge level sensor, and an alarm device; The discharging level sensor is arranged in the storage box and is used for detecting whether materials exist in the discharging level or not; The alarm device is connected with the blanking level sensor and is used for generating an alarm signal when detecting that no material exists in the blanking level.
8. 8. A paste application apparatus control method applied to the paste application apparatus according to any one of claims 1 to 7, comprising: In response to the paste being in the feeding stage, vibrating the paste by a vibrating motor to eliminate air holes generated during feeding; in response to being in a feeding stage, conveying the paste in the storage box into the screw pump assembly through a pressure feeding group so as to avoid vacuum suction; and controlling the rotating speed of the screw pump to enable the output pressure value at the position of the glue supply hose to be equal to a preset rated pressure value.
9. 9. The paste coating apparatus control method according to claim 8, wherein the output pressure value at the supply hose is equal to a preset rated pressure value by controlling the rotation speed of the screw pump, specifically comprising: Acquiring an actual output pressure value of the glue supply hose; determining a pressure difference between the actual output pressure value and the preset rated pressure value; And adjusting the rotating speed of the screw pump based on the pressure difference value.
10. 10. The paste coating apparatus control method according to claim 8, wherein after the output pressure value at the supply hose is made equal to a preset rated pressure value by controlling the rotation speed of the screw pump, the method further comprises: Acquiring image information of the adhesive tape, and determining an actual parameter value of the adhesive tape based on the image information, wherein the actual parameter value comprises at least one of an actual width value and an actual height value; Determining an offset value by comparing the actual parameter value with a preset standard parameter value; and correcting the rated pressure value based on the deviation value.

Description

Paste coating equipment and control method Technical Field The application relates to the field of paste coating, in particular to paste coating equipment and a control method. Background In many industrial fields such as casting, building materials, electronics, etc., the coating of paste materials (such as casting adhesives, sealants, heat-conducting pastes, sealing pastes, etc.) is a key process. In the prior art, paste coating generally depends on various feeding devices, the basic structure of which comprises a storage container and a delivery pump, and the paste is delivered to a coating head for operation through a pipeline by the pressure generated by the delivery pump. However, in practical application, when the existing paste coating equipment is used for treating paste materials of specific types, technical problems of unstable coating quality, poor feed continuity and the like are common. The concrete steps are as follows: firstly, during the preparation or feeding process of the paste material to the storage box, a large amount of air is easily involved due to the operations of stirring, pouring and the like, so that bubbles and air holes are formed. If the paste containing bubbles is directly used for coating, cavities, uneven coating and even gel breaking can occur in the coating layer, so that the compactness and the bonding strength of a coating layer are seriously affected, and the quality and the yield of a final product are further reduced. The traditional static defoaming mode has low efficiency and is difficult to thoroughly eliminate tiny bubbles in the paste. Secondly, the existing equipment is easy to generate unstable feeding phenomenon in the feeding process, especially for paste with high viscosity or strong thixotropic property. When the fluidity of the paste is poor, the paste at the suction inlet of the delivery pump cannot be filled in time, so that the phenomenon of 'sucking vacuum' is easy to form, the suction efficiency of the pump is reduced, the feeding flow and the pressure are severely fluctuated, and even the flow is cut off. The unstable feeding state can be directly reflected on the coating effect, so that the coated adhesive tape is inconsistent in size and unclear in outline, and cannot meet the process requirement of high-precision coating. Disclosure of Invention In order to solve the problems, the application provides paste coating equipment and a control method, wherein the paste coating equipment comprises a paste feeding system, the paste feeding system comprises a base, a screw pump, a vibrating motor, a storage box, a pressure feeding component, a pressure sensor and a glue feeding hose, the vibrating motor is connected with the storage box and is used for vibrating the paste in the process of feeding the paste into the storage box to eliminate air holes generated in the process of feeding the paste, the pressure feeding component is connected with the storage box and is used for conveying the paste in the storage box into the screw pump through pressure in the feeding process, and the screw pump is arranged between the pressure feeding component and the glue feeding hose and is used for conveying the paste into the glue feeding hose. In one example, the paste coating device further comprises a support flexible connection, wherein the support flexible connection is arranged between the base and the storage box and is used for supporting the storage box and isolating vibration generated by the vibrating motor in the feeding process. In one example, the paste coating device further comprises a soft feed connection, wherein the soft feed connection is arranged between the storage box and the screw pump and is used for counteracting vibration generated by the vibrating motor in the feeding process while conveying paste. In one example, the paste coating device further comprises a mechanical arm, a pressure sensor arranged on the glue supply hose and a paste coating clamp assembly arranged on the mechanical arm and connected with the glue supply hose. In one example, the paste coating clamp assembly is integrated with an automatic valve, a visual positioning sensor and a rubber strip detection sensor, wherein the automatic valve is used for controlling terminal pressure and coating flow of paste, the visual positioning sensor is used for positioning an incoming sand mould, and the rubber strip detection sensor is used for detecting the width of a rubber strip in real time in a coating process. In one example, the paste coating device further comprises a screw pump motor and a coupling, wherein the screw pump motor is used for outputting rotation force to the screw pump, and the coupling is used for connecting the screw pump and the screw pump motor and transmitting the rotation force. In one example, the paste coating device further comprises a discharging level sensor and an alarm device, wherein the discharging level sensor is arranged in the storage box and