Chain conveying mechanism

Abstract

The utility model relates to a chain conveying mechanism for a cooling conveying table in a tin spraying process in PCB (Printed Circuit Board) manufacturing, which comprises two chains (6) for conveying products (5), which are respectively arranged between a driving chain wheel (7) and a driven chain wheel (1) which are driven by the same transmission shaft (8), and outer side chain plates (4) of the chains (6) are higher than other parts of the chains (6) and can play a role in limiting the products (5) during conveying. And the soft rubber mat (3) used for supporting the product (5) is arranged on the inner side chain plate (2) of the chain (6).

Description

Technical Field

[0001] The utility model is mainly a post-processing device for the tin spraying process in the production process of PCB boards. The purpose of this production process is to cover the surface of the pad of the PCB board with a thin layer of tin to increase the solderability of the pad and prevent the copper surface of the pad from being oxidized. Background Art

[0002] Because the PCB board surface temperature is high during the tin spraying process, the synchronous belt conveyor mechanism used before, the synchronous belt is divided into a strong layer of polyurethane material and a high-temperature resistant layer of silicone material. The two materials are adhesive structures, so after a period of continuous production, the synchronous belt used for conveying is prone to stratification, which makes the conveyor belt scrapped and has a short service life.

[0003] Compared with the previous synchronous belt conveyor design, the chain conveying structure is simple and high temperature resistant, with a longer service life. In addition, the limiting structure of the chain plate (4) outside the chain (6) and the soft rubber pad (3) installed with a hole structure in the utility model make the conveying more stable and reliable. Summary of the invention

[0004] The utility model is a conveying mechanism for a cooling conveying platform after a tin spraying process in PCB manufacturing. The structure comprises two driving sprockets (7) driven by the same transmission shaft (8), and a transmission chain composed of two chains (6) respectively installed between the driving sprocket (7) and the driven sprocket (1). The outer chain plate (4) of the chain (6) is higher than other parts of the chain (6). The inner chain plate (2) of the chain (6) is a structure bent inwardly. The bent part has a small hole structure for installing a soft rubber pad (3). The two chains (6) are aligned with each other. The device is installed such that when the driving sprocket (7) driven by the transmission shaft (8) rotates, it drives the two chains (6) to rotate synchronously, and can smoothly and effectively transport the product (5) to be cooled from one end of the device to the other end. The outer chain plate (4) higher than the other parts of the chain (6) can effectively limit the position of the product (5) during transportation. The soft rubber pad (3) can increase the friction between the chain (6) and the product (5) during transportation, and at the same time prevent the heat of the product (5) from being excessively transferred to the chain (6), thereby preventing the temperature of the conveying mechanism from being too high.

[0005] The outer chain plate (4) of the chain (6) is higher than other parts of the chain (6). When the two chains (6) are symmetrically installed, the outer chain plate (4) will have a limiting effect on the product (5) to prevent the product (5) from being deflected due to environmental disturbances.

[0006] The inner link plate (2) of the chain (6) is a structure bent toward the inner side of the chain (6). This bending structure refers to the shape structure of the inner link plate (2). The processing method used to achieve this shape structure does not affect the nature of the utility model.

[0007] In this utility model, the transmission shaft (8) drives the driving sprocket (7) to rotate synchronously, which does not mean that the driving sprocket (7) is installed on the transmission shaft (8). The transmission shaft (8) drives the driving sprocket (7) to rotate synchronously through other connection methods, which does not affect the nature of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 This is the structural diagram of the utility model;

[0009] Figure 2 This is the chain structure diagram of the utility model;

[0010] In the following figures:

[0011] (1) Driven sprocket

[0012] (2) Inner chain plate

[0013] (3) Soft rubber pad

[0014] (4) Outer chain plate

[0015] (5) Products

[0016] (6) Chain

[0017] (7) Driving sprocket

[0018] (8) Transmission shaft DETAILED DESCRIPTION

[0019] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as being limited to the embodiments described herein. On the contrary, these embodiments are provided for a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are only used for illustrative purposes and are not intended to be within the scope of protection of the utility model.

[0020] like Figure 1 and Figure 2 As shown, the utility model provides the following chain conveying structure.

[0021] A chain (6) for conveying a product (5) is installed on the driving sprocket (7) and the driven sprocket (1). The chain (6) has a structure as follows: Figure 2 As shown, it includes an inner chain plate (2), an outer chain plate (4), a soft rubber pad (3) and other parts of a conventional chain.

[0022] In the specific implementation, two chains (6) need to be used simultaneously to realize the realization. The two chains (6) are symmetrically installed on two sets of independent driving sprockets (7) and driven sprockets (1). When the distance between the two chains (6) is appropriate to the width of the product (5), the edge position of the product (5) can be placed exactly on the soft rubber pads (3) of the two chains (6), and the product (5) is also located exactly between the outer chain plates (4) of the chains (6).

[0023] When the transmission shaft (8) drives the two chains (6) to operate synchronously through the driving sprocket (7), the products (5) placed on the two chains (6) can be transported stably and effectively.

Claims

1. A chain conveying mechanism, the structure of which comprises two driving sprockets (7) driven by the same transmission shaft (8), and a transmission chain composed of two chains (6) respectively installed between the driving sprocket (7) and the driven sprocket (1), the outer chain plate (4) of the chain (6) is higher than other positions of the chain (6), the inner chain plate (2) of the chain (6) is a structure bent toward one side of the chain (6), and the bent part of the chain plate (2) has a small hole for installing a soft rubber pad (3), when the chain (6) installed between the driving sprocket (7) and the driven sprocket (1) starts to run, the product (5) whose edge is placed on the soft rubber pad (3) of the chain (6) can be transported from one end to the other end.

2. A chain conveying mechanism according to claim 1, characterized in that: The chain (6) comprises an outer chain plate (4), an inner chain plate (2) and a soft rubber pad (3).

3. A chain conveying mechanism according to claim 1, characterized in that: The outer chain plate (4) of the chain (6) has a structural height higher than other parts of the chain. In the two symmetrically installed chains (6), the raised part of the outer chain plate (4) can play a role in limiting the conveyed product (5).

4. A chain conveying mechanism according to claim 1, characterized in that: The inner chain plate (2) of the chain (6) has a structure bent toward one side of the chain (6). In the two symmetrically installed chains (6), the bent portion of the inner chain plate (2) can play a role in lifting the product (5) being transported.

5. A chain conveying mechanism according to claim 1, characterized in that: Two chains (6) are used simultaneously and are symmetrically installed and rotate synchronously during operation.

6. A chain conveying mechanism according to claim 1, characterized in that: The soft rubber pad (3) is evenly installed on the small holes of the inner chain plate (2) of the chain (6).

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