JP2530384Y2 - Cassette type simple detachable belt conveyor for metal detector - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal detector widely used in a wide range of industries such as the chemical, food and various raw material industries.

[0002]

2. Description of the Related Art In general, the necessity of removing a conveyor of a metal detector is defined by the JIS standard for sanitary use of a belt conveyor of a food processing machine. It is said that it can be easily removed from the main body, washed, and assembled. Conventionally, various methods have been attempted as a method for easily attaching and detaching this type of conveyor and conveyor belt, and as one of them, a cassette method of a belt conveyor has been used.

[0003]

[0005] However, the drive system conventionally used usually uses a timing belt, and in the case of attachment and detachment, it is necessary to take time and effort to loosen, tension, and remove the timing belt. There is inconvenience. In many cases, two sets of joint fasteners are used to fasten the cassette conveyor and the main body frame, and the separation of the drive system between the cassette conveyor and the main body frame is not simplified, so the actual handling is easy And not easy.

[0004]

SUMMARY OF THE INVENTION The object of the present invention is to provide a cassette type simple detachable belt conveyor for a metal detector in which a conveyor and a conveyor belt can be easily detached from a main body.

[0005]

In order to achieve the above object, a belt conveyor for a metal detector according to the present invention has a structure in which a conveyor portion is formed into a cassette and can be easily attached to and detached from a main body frame of the metal detector. The cassette is equipped with both bottom and head pulleys, a loose belt, and a belt tensioning device. Also,
In the frame part of the metal detector main body, two return rollers, a belt meandering adjustment device arranged on the support base of the return roller on the bottom side, a pinch roller for driving the pressure contact of the bottom pulley, and an electric motor for driving this , A pair of drive chains and a fastening hardware for easily fastening the cassette to the main body. By this, when assembling, simply connecting the cassette conveyor to the main body and fastening it, the connection of both drive systems is automatically configured, and the loosely charged conveyor belt automatically and properly tensions again. Normal operation can be performed promptly. Upon disassembly, the cassette conveyor and the belt alone can be easily removed in the reverse order of the above-described assembly.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side view including a cross-section of a belt conveyor for a metal detector according to the present invention, which is a simple and detachable belt conveyor. FIG. 2 is a perspective view showing the mutual relationship between the cassette conveyor 1 and the metal detector main body 2 for easy understanding. 1 and 2 show the relationship between a cassette conveyor 1, a metal detector main body 2, a search coil 3 forming a detection space, and a rubber bearing base 4 for supporting the search coil 3 in a vibration-free manner. . The object to be detected advances in the direction A on the conveyor belt 5 and the search coil 3
When passing through the detection space, the presence or absence of a metal body therein is inspected for reaction. Both ends of the non-driven head pulley 6 and the driving bottom pulley 7 of the cassette conveyor 1 are respectively supported by a pair of head pulley frames 8 and a pair of bottom pulley frames 9 with built-in bearings. These two frames 8,
9 is integrated with the conveyor table plate 10 by screws in the form shown in FIG.

[0007] Both sides of the frame 8 are provided with a tensioning screw device 12 and an elongated hole 11 for the belt 5. On both sides of the bottom pulley side end of the frame 9, a fastening pin 16 on the main body frame 15 side is hooked. And both frames 15, 9
There is an L-shaped bracket 17 for fastening and fixing. Reference numeral 18 denotes a base metal for the pin 16 attached to the frame 15 of the main body 2, and 19 denotes a latch for the joint fastener 20 provided on the side surface of the head pulley frame 8, and a knock 21 and a hole for positioning the frames 8, 15 are provided. There are 22. The knock 21 and the knock hole 22 are separately mounted on the cassette conveyor 1 and the main body 2, respectively. In FIG.
An example in which a knock 21 is provided on the side is shown.

The frame 15 of the main body 2 has a pair of return rollers 23 and 24, and the support 34 of the bottom side roller 23 has a long hole 14 for use with the screw type belt meandering adjustment device 13. Further, in a state where the frames 9 and 15 are fastened and fixed, a pair of pinch rollers 25 having a soft rubber lined pinch roller or gear-shaped small teeth on a surface for transmitting power by pressing against the driving bottom pulley 7 is provided. , A motor 26 for driving the motor, and chain wheels 27 and 28.
Also, both lower surfaces 2 of frames 8 and 9 of cassette conveyor 1
9 and 30, the upper edge portion 31 and the contact surface 32 of the main frame are horizontally and exactly the same in both widths.

In order to securely fix the cassette conveyor 1 to the left and right with respect to the belt direction on the main body 2, the conveyor frames 8, 9 are connected to the return pulley fixing stands 33, 34 of the frame 15 of the main body 2 and the main frame 15. Interfacing 32
Bottom pulley side casing wall 35 configured higher
It is firmly fixed in a form close to fitting.

The cassette conveyor 1 is connected to the frame 1 of the main body 2.
When the belt 5 is removed from the belt 5, the belt 5 has sufficient slack as shown by a two-dot chain line in FIG. 2 and can be easily removed from the conveyor frame 15. Also, the upper and lower frames 8, 9, and 15 having such a structure are hooked with the fastening pins 16 and the hooking metal fittings 18 as shown in FIG. Is fastened, the return rollers 23 and 24 are relatively pushed up, and the belt 5 is naturally tensioned. Then, the bottom pulley 9 and the pinch roller 2
Reference numeral 5 denotes a state in which the cassette conveyor 1 as a whole is pressed against the predetermined fulcrum (fastening pin) 16 by an appropriate force of its own weight, and the torque of the electric motor 26 is reduced by the chain wheel 27,
Bottom pulley 7 for driving via pinch roller 25 and 28
Can be transmitted smoothly.

As described above, in the present invention, the relationship between the cassette conveyor and the main body is made independent so that the drive system can be completely separated. In addition, since the method of fastening the two is simplified to the minimum, the procedure for detaching and attaching the cassette conveyor 1 and removing the belt is as shown in FIG.
First, lift the knock 21 in the direction B by just a few millimeters.
As far as the metal fitting 17 comes off from the pin 16, it is shifted in the direction C, and finally the cassette conveyor 1 is pulled out in the direction A while being lifted, and the belt 5 may be pulled out outside. Although these are expressed in several steps, they are very convenient methods that can be performed in a few seconds, which is practically almost a one-touch operation.

[0012]

[Effects of the Invention] As described in detail above, in the device of the present invention, when assembling, only the cassette conveyor is mounted on the main body and fastened, and the connection between the two drive systems is automatically configured.
Also, the conveyor belt, which is loosely charged, is automatically and appropriately tensioned, and normal operation can be quickly performed. Upon disassembly, the cassette conveyor and the belt alone can be easily removed in the reverse order of the above-described assembly. Therefore, the present invention has a great practical effect when applied to a metal detector widely used in the chemical, food, and various raw material industries.

[Brief description of the drawings]

FIG. 1 is a side view including a cross section showing an embodiment of the present invention.

FIG. 2 is a perspective view (a) and a partial cross-sectional view (b) showing an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cassette conveyor 2 Metal detector main body 3 Search coil 4 Support body 5 Conveyor belt 6 Non-drive head pulley 7 Driving bottom pulley 8 Head pulley support frame 9 Bottom pulley support frame 10 Conveyor belt 11 Slot 12 Screw device 13 Meandering adjustment device DESCRIPTION OF SYMBOLS 14 Long hole for meandering adjustment device 15 Frame 16 Fastening pin 17 L-shaped bracket 18 Base hardware 19 Hook 20 Joint fastener 21 Knock for positioning 22 Knock hole for positioning 23, 24 Return roller 25 Pinch roller 26 Electric motor 27, 28 Chain wheel 29 Lower surface of frame 8 30 Lower surface of frame 9 31 Upper edge of main frame 15 32 Contact surface of main frame 15 33 Fixed base of return pulley 24 34 Fixed base of return pulley 23 35 Bottom pulley side casing

Claims (1)

(57) [Scope of request for utility model registration] A conveyor belt passes through a detection space of a detection coil of a metal detector for detecting a metal body by a detection coil formed by a combination of an excitation coil and a reception coil. In a table traveling type belt conveyor of a metal detector in which a belt conveyor is configured to be driven endlessly, two pairs of bearing frames for respectively supporting the bottom pulley, the head pulley, and both ends of the both pulleys. A cassette table conveyor having an integral structure in which the two pairs of support frames are mutually fastened and a conveyor table plate having an integral structure, wherein the conveyor belt is suspended between the bottom pulley and the head pulley; and A search coil that fixes the bearing as a whole and forms a detection space for metal detection In the cassette type conveyor, the pair of head pulley support frames each include a threaded belt tensioning device, and the pair of bottom pulley frames have both side end portions. An L-shaped fitting for fixing this integrated structure to a pin at the tip of the main body frame of the metal detector by hooking, and a knock provided on an upper edge surface of the head support frame which is in contact with the frame. A knock hole or a knock paired with a knock hole, wherein the main body frame has a pair of returns for rotatably tensioning a return portion of the conveyor belt at a position close to the bottom pulley and the head pulley. Roller and screw-type belt meandering adjustment built in a support that supports the return roller on the bottom side A device, a pair of pinch rollers having soft rubber lining or a gear-shaped small tooth on the surface of the bottom pulley, which is pressed and rotated at circumferential portions on both sides in the longitudinal direction, and for driving the pair of pinch rollers. The cassette type conveyor and the body frame have a knocking pin or a knocking hole which is a pair of a fixing pin and a knocking hole or a knocking pair. In the vicinity of the knock hole, a member forming a joint fastener is separated and held so that the two members can be quickly attached and detached. In the cassette type conveyor, the conveyor belt is formed by combining the cassette type conveyor and the main body frame. The length is set so that it is tensed appropriately in relation to the return roller when Wherein the conveyor belt is configured to be sufficiently loose and easily detachable from the main body of the cassette conveyor when the conveyor is pulled out of the main body frame. Conveyor.