Feeding device of silver paste double-cavity structure

Abstract

The utility model relates to the technical field of photovoltaic equipment, in particular to a silver paste feeding device with a double-cavity structure. The utility model provides a silver paste double-cavity structure feeding device, including lower die, motor, stirring rod, synchronous belt, gasket, upper die and feed pipe, the lower die is provided with main cavity inside, the lower die is provided with auxiliary cavity inside, the rear side face of lower die is equipped with motor, the inside of lower die is rotatingly connected with stirring rod, the stirring rod passes through the left side face of lower die, and the left side face of lower die is equipped with the feed pipe. A synchronous belt is connected between an output shaft of the motor and the left end of the stirring rod, a gasket is installed at the top of the lower die, an upper die is installed at the top of the gasket, and a feeding pipe is installed on the rear side face of the lower die. By means of continuous stirring of the stirring blades in the main cavity, the internal agglomeration structure of the silver paste is effectively damaged, the components of the silver paste are evenly mixed, the fluidity is remarkably improved, the silver paste which is originally difficult to be subjected to slit extrusion type coating can be smoothly subjected to follow-up coating operation, and the feasibility and stability of the technology are ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to photovoltaic equipment technical field especially relates to a kind of feeding device of silver paste double-cavity structure. BACKGROUND

[0002] Silver paste is a kind of material widely used in the field of electronics, photovoltaic, etc., with special physical and chemical properties. Its activity is extremely low, which makes the interaction between the silver particles in the silver paste weak, and it is difficult to flow and disperse spontaneously. At the same time, the flowability of silver paste is very poor, showing high viscosity and high yield stress characteristics, similar to semi-solid substances. In the slit extrusion coating process, the coating equipment needs to accurately coat the silver paste uniformly on the substrate material. However, due to the above characteristics of silver paste, the traditional coating method cannot directly extrude the silver paste and form a uniform, continuous and precise thickness coating.

[0003] Currently, there is no suitable feeding device on the market that can fully meet the silver paste coating requirements. Most existing feeding devices are designed for ordinary paste with good flowability, and their working principle and structure cannot effectively cope with the low activity and poor flowability of silver paste. For example, ordinary feeding devices lack effective stirring function for silver paste, which cannot break the agglomeration structure inside the silver paste, causing problems such as pipe blockage, uneven feeding, and inconsistent coating thickness during the feeding process. In addition, the existing extrusion device cannot accurately control the pressure and adjust the flow according to the special rheological properties of silver paste when extruding silver paste, resulting in poor coating quality and high scrap rate, which seriously affects production efficiency and product quality, increasing production cost. Therefore, it is urgent to design a stirring and extrusion coating device specifically for silver paste to solve the many problems existing in the prior art and meet the high quality requirements of industrial production for silver paste coating.

[0004] In view of the existing problems, a silver paste double-cavity structure feeding device capable of uniform feeding and consistent coating thickness is needed. INVENTION CONTENTS

[0005] In order to overcome the shortcomings of uneven feeding and inconsistent coating thickness, the utility model provides a silver paste double-cavity structure feeding device.

[0006] The technical scheme of the utility model is as follows: a silver paste double-cavity structure feeding device, comprising a lower mold, a motor, a stirring rod, a synchronous belt, a gasket, an upper mold and a feeding pipe, a main cavity is formed in the lower mold, a secondary cavity is formed in the lower mold, a motor is installed on the rear side of the lower mold, a stirring rod is rotatably connected inside the lower mold, the stirring rod penetrates through the left side of the lower mold, a synchronous belt is connected between the output shaft of the motor and the left end of the stirring rod, a gasket is installed on the top of the lower mold, an upper mold is installed on the top of the gasket, and a feeding pipe is installed on the rear side of the lower mold.

[0007] Further, it further comprises a discharging frame and a first observation window, the front side of the lower mold is provided with the discharging frame, and the discharging frame is symmetrically embedded with the first observation window.

[0008] Further, it further comprises a connecting block, a butt joint block and a guide frame, the connecting block is installed on the left and right sides of the discharging frame, the connecting block is provided with a clamping hole, the butt joint block is clamped in the clamping hole, and the guide frame is connected between the two butt joint blocks and is in contact with the discharging frame.

[0009] Further, it further comprises a sealing strip, the sealing strip is symmetrically installed on the upper and lower sides of the guide frame and is in contact with the guide frame.

[0010] Further, it further comprises a second observation window, the top surface of the upper mold is embedded with the second observation window.

[0011] Further, a plurality of blades are spirally arranged on the stirring rod.

[0012] The device has the advantages that: 1. The continuous stirring of the stirring blades in the main cavity effectively destroys the internal agglomeration structure of the silver paste, uniformly mixes the components, and significantly improves the flowability. This not only enables the silver paste that is originally difficult to be coated by slit extrusion to be smoothly completed in subsequent coating operations, ensuring the feasibility and stability of the process, but also realizes uniform, continuous and precise thickness control of the silver paste during outflow through the buffering and arranging effects of the auxiliary cavity, greatly improves the coating quality, reduces the scrap rate, and improves the qualified rate and high-quality product rate of the product. In addition, the device stably and efficiently realizes the stirring and feeding coating of the silver paste, greatly reduces the downtime and production interruption caused by silver paste blockage or abnormal coating, and precise coating quality control avoids secondary processing or rework, thereby optimizing the entire production process, significantly improving production efficiency, and meeting the needs of large-scale industrial production. The design of the device is compact and reasonable, and the lower mold double-cavity layout and the cooperative working mode of the stirring assembly are adopted to adapt to the special properties of the silver paste and the coating process requirements. It can also be flexibly adjusted according to different silver paste characteristics and coating process parameters, such as changing the stirring blade speed, cavity size and shape, etc., showing strong adaptability and universality. Therefore, the device can be widely applied to the electronic and photovoltaic industries, and provides strong technical support for the development of related industries.

[0013] 2. By installing guide frames with different outlet sizes, the size of the silver paste discharge gap can be easily adjusted to control the outflow speed and amount of the silver paste. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a three-dimensional structure schematic diagram of the utility model.

[0015] Figure 2 It is an explosion view of the upper mold, gasket and lower mold of the utility model.

[0016] Figure 3 It is the three-dimensional structure schematic view of spare parts such as feeding pipe, motor and stirring rod of the utility model.

[0017] Figure 4 It is the three-dimensional structure schematic view of spare parts such as feeding pipe, motor and stirring rod of the utility model.

[0018] Figure 5 It is the three-dimensional structure schematic view of spare parts such as feeding pipe, motor and stirring rod of the utility model.

[0019] The meaning of reference signs in the drawing: 1 - lower mould, 101 - main cavity, 102 - auxiliary cavity, 2 - motor, 3 - stirring rod, 4 - synchronous belt, 5 - gasket, 6 - upper mould, 7 - feeding pipe, 8 - discharging frame, 9 - first observation window, 10 - connecting block, 11 - clamping hole, 12 - butt joint block, 13 - guide frame, 1301 - sealing strip, 14 - second observation window. DETAILED DESCRIPTION

[0020] Reference herein to an embodiment means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the utility model. The appearance of the phrase in various places in the specification is not necessarily all referring to the same embodiment, nor is it necessarily referring to a preferred or alternative embodiment. It will be explicitly understood that the embodiments described herein can be combined with other embodiments.

[0021] Embodiment: a silver paste double-cavity structure feeding device, like Figures 1-5As shown, including the lower die 1, motor 2, stirring rod 3, synchronous belt 4, gasket 5, upper die 6, feed pipe 7, discharge frame 8, first viewing window 9, connecting block 10, butt block 12, guide frame 13, sealing strip 1301 and second viewing window 14, the lower die 1 is internally provided with a main cavity 101, which can be used to collect silver paste and stir it in the main cavity 101. The lower die 1 is internally provided with a secondary cavity 102, which plays a key role in buffering and arranging during the entire feeding process. The silver paste flowing from the main cavity into the secondary cavity is temporarily stored in the secondary cavity and further stabilized. The rear side of the lower die 1 is provided with a motor 2. The lower die 1 is internally rotatably connected with a stirring rod 3. The stirring rod 3 penetrates the left side of the lower die 1. A plurality of blades are spirally arranged on the stirring rod 3. The stirring rod 3 can be used to stir the silver paste, so as to fully destroy the agglomeration structure inside the silver paste and uniformly mix the components of the silver paste. The output shaft of the motor 2 is connected with the left end of the stirring rod 3 through a synchronous belt 4. The top of the lower die 1 is provided with a gasket 5. The gasket 5 is provided with an upper die 6 on the top. The rear side of the lower die 1 is provided with a feed pipe 7, which can be used for silver paste feeding. The front side of the lower die 1 is provided with a discharge frame 8, which can be used for silver paste discharge. The discharge frame 8 is symmetrically embedded with a first viewing window 9 above and below. The first viewing window 9 can observe the silver paste discharge condition. The discharge frame 8 is provided with connecting blocks 10 on the left and right sides. The connecting blocks 10 are internally provided with clamping holes 11, which can be provided with guide frames 13. The clamping holes 11 are clamped with butt blocks 12. The guide frame 13 is connected between the two butt blocks 12. The guide frame 13 is in contact with the discharge frame 8. The guide frame 13 can guide the outflow of the silver paste. The guide frame 13 is symmetrically provided with sealing strips 1301 above and below. The sealing strips 1301 are in contact with the guide frame 13. The sealing strips 1301 can seal the gap between the guide frame 13 and the discharge frame 8. The upper die 6 is embedded with a second viewing window 14 on the top surface. The operator can observe the silver paste inside the lower die 1 through the second viewing window 14.

[0022] When the device needs to be used, when the silver paste feeding operation is performed, first, the feeding pipe 7 is connected to the feeding device, after the external connection is completed, the appropriate outlet guide frame 13 is selected and placed in the front side position of the discharging frame 8, and the two abutting blocks 12 are accurately clamped into the corresponding clamping holes 11, so that the guide frame 13 is fixed, at this time, the sealing strip 1301 automatically seals any gap between the guide frame 13 and the discharging frame 8 to prevent material leakage, then the feeding device is started, the silver paste will enter the main cavity 101 of the lower mold 1 from the feeding pipe 7 in the feeding device, when the device starts to work, the motor 2 starts to drive the synchronous belt 4 to rotate, and then the stirring rod 3 rotates uniformly in the main cavity 101, the stirring rod 3 fully stirs the silver paste entering the main cavity 101, in this process, the silver paste gradually breaks the agglomeration state under the action of the stirring rod 3 and the upper blade thereof, the internal components are mixed more uniformly, and the flowability is also gradually improved, after a period of stirring, the silver paste flows from the main cavity 101 to the auxiliary cavity 102 located in front of it under the action of pressure difference or gravity, the auxiliary cavity 102 is specially designed for temporary storage and arrangement of the stirred silver paste, to ensure its stability and uniformity, when the auxiliary cavity 102 is full of silver paste, the silver paste will flow out from the tiny gap between the upper mold 6, the lower mold 1 and the gasket 5, and finally flow into the discharging frame 8 and be discharged in a stable and uniform state through the guidance of the guide frame 13, to provide a high-quality silver paste coating for the subsequent coating process, so that the silver paste can maintain a stable and uniform state when flowing out of the guide frame 13 for coating, thereby ensuring the coating quality and realizing the preparation of a uniform, continuous and thickness-accurate silver paste coating, effectively solving the problems of unable to directly use the slot extrusion type coating and poor coating quality caused by low silver paste activity and poor flowability in the prior art, improving the production efficiency and reducing the production cost.

[0023] The above is only an embodiment of the present application, and does not limit the patent range of the present application, and any equivalent structure or equivalent process transformation according to the content of the present application specification, or direct or indirect application in other related technical fields, are also included in the patent protection range of the present application.

Claims

1. A silver paste dual cavity structure feed device, characterized in that: It include lower mould (1), motor (2), stirring rod (3), synchronous belt (4), gasket (5), upper mould (6) and feed pipe (7), the inside rear side of lower mould (1) is provided with main cavity (101), the inside front side of lower mould (1) is provided with auxiliary cavity (102), the left side of lower mould (1) rear side is installed with motor (2), the inside rotationally connected of lower mould (1) has stirring rod (3), stirring rod (3) penetrates lower mould (1) left side, the output shaft between motor (2) and stirring rod (3) left end is installed with synchronous belt (4), the top of lower mould (1) is fixedly connected with gasket (5), the top of gasket (5) is fixedly connected with upper mould (6), the middle part of lower mould (1) rear side is fixedly connected with feed pipe (7).

2. A silver paste dual-cavity structure feed device according to claim 1, characterized in that: It also includes discharge frame (8) and first observation window (9), the front side of lower mould (1) is fixedly connected with discharge frame (8), and the discharge frame (8) is symmetrically embedded with first observation window (9) up and down.

3. A silver paste dual-cavity structure feed device according to claim 2, characterized in that: It also includes connecting block (10), butt block (12) and guide frame (13), the left and right sides of discharge frame (8) are fixedly connected with connecting block (10), the connecting block (10) is provided with clamping hole (11) on it, the butt block (12) is clamped in clamping hole (11), the guide frame (13) is fixedly connected between the two butt blocks (12), and the guide frame (13) is in contact with discharge frame (8) and is matched.

4. A silver paste dual-cavity structure feed device according to claim 3, characterized in that: It also includes sealing strip (1301), and the guide frame (13) is symmetrically installed with sealing strip (1301) up and down, and the sealing strip (1301) is in contact with the guide frame (13) and is matched.

5. A silver paste dual-cavity structure feed device according to claim 4, characterized in that: It also includes second observation window (14), and the top surface of upper mould (6) is embedded with second observation window (14).

6. A silver paste dual-cavity structure feed device according to claim 5, characterized in that: A plurality of blades are spirally arranged on stirring rod (3).

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