JP3028006U - Transport structure of continuous heating furnace for soldering - Google Patents

Abstract

(57) 【Abstract】 PROBLEM TO BE SOLVED: To prevent the printed wiring board from falling off, fitting in or getting stuck at the delivery end of a transportation structure of a continuous heating furnace for soldering for printed wiring boards. A chain conveyor mechanism is provided above a mesh conveyor belt, and transportation by a horizontal operation system is adopted to eliminate a limitation on the length of the mesh conveyor belt.
As a result, the delivery end of the mesh conveyor belt and the delivery end of the chain conveyor mechanism are aligned so that there are no gaps between the delivery end of the mesh conveyor belt and the chain conveyor mechanism, and the printed wiring board is effectively removed and inserted. , Prevent the phenomenon of scissors.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention relates to a kind of transportation structure for a continuous heating furnace for soldering printed wiring boards, and more particularly to a transportation structure that does not cause the printed wiring boards to fall, fit, or get caught.

[0002]

[Prior art]

 Soldering technology overcomes many of the shortcomings of conventional perforated electrical circuit boards, and the application of this technology results in reduced product volume, increased density, reduced labor, and precision not possible by hand. Was done. Therefore, it is very important in the industry. The peripheral equipment has also been developed one after another, and new products such as soldering machines, component placement machines, spot soldering machines, and solder leveling machines are constantly on the market.

The continuous heating furnace uses a heater as a heat source to heat the terminals of the SMD component to be soldered, the solder paste, and the printed wiring board to achieve the purpose of soldering. An appropriate transportation structure is generally provided on the well-known continuous heating furnace, and it is used for soldering operation by passing a printed wiring board or the like to be transported through a heater inside the fuselage. A known continuous heating furnace transportation structure is as shown in FIG. 1, which comprises one mesh conveyor belt 1A and one chain conveyor mechanism 2A. The mesh conveyor belt 1A and the chain conveyor mechanism 2A respectively carry one continuous transportation by the transmission of the transmission mechanism, and the two sides of the printed wiring board are placed between the two chains of the chain conveyor mechanism 2A. The reticulated conveyor belt 1A was used to support the printed wiring board so that it would not fall off, or to receive the printed wiring board having a relatively small area.

However, in the above-described transportation structure of the well-known continuous heating furnace, since the chain conveyor mechanism 2A is installed so as to surround the outer periphery of the reticulated conveyor belt 1A, the reticulated conveyor belt 1A has a length of the chain conveyor. Since it must be shorter than the mechanism 2A, there is a space L below the two ends of the chain conveyor mechanism 2A where the mesh conveyor belt 1A is not installed, and the mesh conveyor belt 1A and the chain conveyor mechanism 2A In order to prevent mutual contact during the operation process, it is assumed that a constant distance is maintained between the two. Therefore, the gap L below the two ends of the chain conveyor mechanism 2A where the mesh conveyor belt 1A is not installed is It becomes even longer, and the presence of the gap L causes the printed wiring board to be transported to fall into the gap at the delivery end, fit into the gap, or become pinched. It was easy to cause a phenomenon of relaxation. Moreover, the occurrence of phenomena such as falling, fitting, and pinching of the printed wiring board was a serious drawback from the standpoint of the manufacturer. Further, the sprocket shaft of the chain conveyor mechanism 2A is installed horizontally, and the chains are transported in a vertically connected manner, and there is a bearing convex pin that extends laterally of the chain and projects horizontally. It was installed, and two sides such as the printed wiring board to be sent were placed, but with such an operating method, the printed wiring board is easy to fit between the mounting convex pins, and when the feed end receives the printed wiring board. It was easy for the printed wiring board to get stuck. Furthermore, the chain receives the printed wiring board only with the bearing convex pins, so the printed wiring board is supported only by the bearing convex pins in the horizontal direction, which makes the transportation of the printed wiring board on the chain extremely unstable. It became.

From the above, the above-described conventional continuous heating furnace transportation structure has inconvenience and drawbacks in actual use, and improvement has been awaited.

[0006]

[Problems to be solved by the device]

 The main object of the present invention is to provide a chain conveyor mechanism above the mesh conveyor belt in the transportation structure of the continuous heating furnace and adopt the horizontal connection type transportation to eliminate the limitation on the length of the mesh conveyor belt. , Thereby aligning the discharge end of the mesh conveyor belt and the discharge end of the chain conveyor mechanism so that there are no gaps between the mesh conveyor belt and the discharge end of the chain conveyor mechanism, effectively eliminating the falling plate and board. The purpose of this is to prevent the phenomenon of insertion and scissors.

[0007]

The invention of claim 1 includes one mesh conveyor belt and one chain conveyor mechanism, and the mesh conveyor belt and the chain conveyor mechanism each have one continuity by transmission of a transmission mechanism. The chain conveyor mechanism is provided above the mesh conveyor belt, and is provided with two chains.The two chains connect between the two end sprockets and the transmission mechanism. The sprocket is connected vertically and the dynamic force is transmitted to the chain conveyor mechanism, and the shaft center of the sprocket connected to the two ends of the chain is installed vertically so that the chain can be transported in a horizontally operating manner. Is installed in two tracks, the two tracks are supported and fixed on a trolley, and the distance between the two tracks is adjusted appropriately. Each of the two chains installed in the two tracks has a protruding mounting edge formed next to it, which is used to receive and transport the two sides of the printed wiring board. Since it is installed on the mesh conveyor belt, it eliminates the gap at the discharge end and prevents the printed wiring board from falling off, fitting in, or being pinched. Transportation of a continuous heating furnace for soldering. It has a structure.

[0008]

[Embodiment of device]

 The present invention provides a kind of continuous heating furnace transportation structure, which includes one reticulated conveyor belt and one chain conveyor mechanism, each of the reticulated conveyor belt and chain conveyor mechanism being a transmission mechanism. One continuous transport is performed by transmission. The chain conveyor mechanism is installed above a mesh conveyor belt and is transported by a horizontal articulation method, the chain conveyor mechanism comprises two chains, the two chains being between two end sprockets. The chain conveyor mechanism is operated by connecting and connecting with the transmission mechanism to transmit power. The axes of the sprockets connected to the two ends of the chain are installed vertically so that the chain can be transported horizontally. The two chains and sprockets are installed in two tracks, which are supported and fixed on a carriage so that the distance between the two tracks can be adjusted appropriately. Sides of the two chains installed in the two tracks have protruding protruding edges, which are used to support and transport the two sides of the printed wiring board. The chain conveyor mechanism is installed on the mesh conveyor belt, the horizontal connection type transportation is adopted, and the special design of the mounting convex edge does not limit the length of the mesh conveyor belt. The voids generated at the delivery end of the mechanism are completely eliminated, and the horizontal operation type transportation ensures good support for the printed wiring board, thus preventing the printed wiring board from falling off, fitting, and being pinched.

[0009]

【Example】

 2 and 3 show a side view and a perspective view of the present invention, respectively. The transporting structure of the continuous heating furnace for soldering provided by the present invention includes one machine body 10, and the machine body 10 is a strong structure that supports and connects each member, and is placed on the ground. One electric circuit control box 11 is provided on the side surface of the machine body 10 or at any other suitable position, and the electric circuit control box 11 appropriately controls the heater 12, the transportation structure and the like. The heater 12 is installed at an appropriate position in a direction perpendicular to the transportation structure to heat the printed wiring board to prepare for soldering. The airframe 10 and the heater 12 have a well-known structure, and since they do not fall within the scope of the claims of the present invention, a detailed description thereof will be omitted here.

The transport structure of the continuous heating furnace for soldering of the present invention is particularly improved in that the transport structure is provided with one reticulated conveyor belt 13 and one chain conveyor mechanism 14 respectively. Is connected to the power of a motor (not shown in the figure) and the like, and the mesh conveyor belt 13 and chain conveyor mechanism 14 are connected to each other. It is supposed to carry out one continuous transportation.

The reticulated conveyor belt 13 is a reticulated conveyor belt made of one metal material, and the reticulated conveyor belt 13 is hung between transmission rollers 16, 17, 18, 19 at two ends. , 17, 18 and 19 are pivoted at their two ends on the body 10 and are rotatable. A positioning wheel 20 is provided at one end of the mesh conveyor belt 13, and each positioning wheel 20 is fixedly mounted on one shaft 21. The shaft 21 is rotatably pivoted on the machine body 10 at its two ends. . The surface of each positioning wheel 20 is provided with a plurality of convex particles 22 which are opposed to each other in the mesh holes of the mesh conveyor belt 13, and the convex particles 22 can be inserted into the mesh holes of the mesh conveyor belt 13. In addition, one end of the shaft 21 to which the positioning wheel 20 is fixed is connected to an appropriate transmission mechanism and one electric motor (not shown in the figure), so that the positioning wheel 20 serves as a main driving wheel and transmits power to the mesh conveyor belt 13. Have transport operation. In addition, the installation of the convex particles 22 of the positioning wheel 20 prevents the mesh conveyor belt 13 from being displaced during operation.

The chain conveyor mechanism 14 is installed above the mesh conveyor belt 13. The chain conveyor mechanism 14 includes two chains 23 on the left and right, and each chain 23 connects the two end sprockets 24 and 25 (see FIG. 4 at the same time) and is connected to the transmission mechanism 15 side by side. The power of the electric motor is transmitted to cause the two chains 23 of the chain conveyor mechanism 14 to perform one operation. The axes of the sprockets 24 and 25 connected to the two ends of the chain 23 are installed vertically, and the two chains 23 and the sprockets 24 and 25 are installed on the left and right, respectively, in a horizontally installed track 26. Therefore, the two tracks 26 are provided above the mesh conveyor belt 13 and maintain a certain distance from the mesh conveyor belt 13 so that they do not interfere with the normal operation of the mesh conveyor belt 13. The portions near the front and rear ends of the two tracks 26 are supported and fixed to the two trucks 32, and the distance between the two tracks 26 is two screw rods 27 drilled above the truck 32, respectively. Can be adjusted appropriately by the transmission of. One handle ring 28 is provided at one end of each of the two screw rods 27, and is used for rotating the screw rod 27 by transmission and adjusting the distance between the tracks 26. Alternatively, the distance between the two orbits 26 may be adjusted by transmitting it to the screw rod 27 and rotating the screw rod 27 by an electric method or the like.

Separately, each of the joint plates of the two chains 23 in the track 26 is provided with a projecting bearing edge 29 (see FIG. 6) on the side surface thereof, and the bearing edge 29 is substantially horizontal. Each of the mounting projections 29 on the inner side of the two chains 23 receives the two sides of the printed wiring board to be transported, and the mesh conveyor belt 13 receives the center of the printed wiring board so as not to drop the printed wiring board or a relatively small size. Used to hold an area of printed wiring board. If a printed wiring board having a relatively large area or a connected printed wiring board is used for transportation by the chain conveyor mechanism 14, deformation is likely to occur, but such a product can also be transported by the mesh conveyor belt 13. .

In the present invention, since the chain conveyor mechanism 14 is installed above the mesh conveyor belt 13 and is transported in a horizontal motion system, the length of the mesh conveyor belt 13 is not limited, and the mesh conveyor belt 13 and the chain conveyor are not limited. The gap generated by the dispensing ends 30, 31 of the mechanism 14 is completely eliminated (see FIG. 5), effectively preventing the phenomenon of the printed wiring board from falling off, fitting, and pinching, and forming a continuous operation. It is convenient and does not require one worker to be placed to put the printed wiring board on, the printed wiring board does not easily fit between the chain 23 and the mounting convex edge 29, and the printed wiring board simultaneously mounts the mounting convex edge 29. Since the horizontal support by the and the vertical support by the convex pin of the chain 23 are received, stable transportation of the printed wiring board on the chain 23 is possible.

[0015]

[Effect of device]

 As described above, the present invention solves problems such as falling, fitting, and pinching of a printed wiring board, which are likely to occur in the conventional continuous heating furnace transportation structure, and are extremely novel and advanced. I think that it is a device with nature.

[Brief description of drawings]

FIG. 1 is a side view showing a structure of a delivery end of a conventional continuous heating furnace transportation structure.

FIG. 2 is a side view of a transportation structure of a continuous heating furnace according to the present invention.

FIG. 3 is a perspective view of a transportation structure of a continuous heating furnace according to the present invention.

FIG. 4 is a plan view of a transportation structure of a continuous heating furnace according to the present invention.

FIG. 5 is a side view of the dispensing end of the transport structure of the continuous heating furnace according to the present invention.

FIG. 6 is a partial perspective view of the chain conveyor mechanism of the continuous heating furnace according to the present invention.

[Explanation of symbols]

10 ... Airframe 11 ... Electric circuit control box 12 ...
-Heater 13 ... Mesh conveyor belt 14 ... Chain conveyor mechanism 15 ... Transmission mechanism 16, 17, 18, 19 ... Transmission roller 20 ... Positioning wheel 21 ... Shaft 22 ... Convex particles 23 ... Chains 24, 25 ... Sprocket 26 ... Orbit 27 ... Screw rod 28 ... Handle ring 29 ... Loading convex edge 30 ... Discharge end 31 ... Out Charge 32 ・ ・ ・ carriage

Claims (1)

[Scope of utility model registration request] 1. A reticulated conveyor belt and a chain conveyor mechanism are included, and the reticulated conveyor belt and the chain conveyor mechanism are respectively configured to perform one continuous transportation by transmission of a transmission mechanism. The mechanism is provided above the mesh conveyor belt and includes two chains, which connect the two end sprockets and are connected to the transmission mechanism to transmit power to the chain conveyor mechanism. The axes of the sprockets connected to the two ends of the chain are vertically installed to allow the chains to be transported in a horizontally operating manner, and the two chains and sprockets are installed in two tracks. The tracks are supported and fixed on the bogie, the distance between the two tracks can be adjusted appropriately, and the two tracks installed in the two tracks Each of the chains has a protruding protruding edge formed next to it, which is used to receive and transport the two sides of the printed wiring board, and the chain conveyor mechanism is installed on the mesh conveyor belt. A transporting structure for a continuous heating furnace for soldering, characterized in that it is possible to prevent the printed wiring board from falling off, fitting in, and being pinched by eliminating voids at the ends.