JPH0727792U - Tape cutting device - Google Patents

Abstract

(57) [Abstract] [Purpose] The accuracy of the feed dimension is increased to eliminate the variation in the tape cutting width, and the tape cutting width can be easily changed without increasing man-hours, improving quality and producing. Provided is a tape cutting device capable of improving the property. [Structure] Rack gear 2 connected to air cylinder 1
And a pinion gear 3 meshing with the rack gear 2 is provided, and a cam clutch 4 and an electromagnetic clutch 5 are further connected to the pinion gear 3, and a toothed belt 6 is hung from the output side of the electromagnetic clutch 5 to drive it. The ball screw 12 provided by penetrating and fixed to the shaft 9 is made to rotate,
A moving nut 13 screwed onto the ball screw 12 and fixedly provided on a saddle 14 for positioning the tape.
The tape cutting device is characterized in that the tape cutting width is set by moving the ball screw 12 back and forth integrally with the saddle 14 as the ball screw 12 rotates.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an adhesive tape cutting device.

[0002]

[Prior art]

 A conventional feeding mechanism in a tape cutting device that automatically cuts a tape or an adhesive tape wound around a wide winding core into a narrow width will be described with reference to FIG. FIG. 3 is a plan view of a main part of a conventional tape cutting device. In FIG. 3, reference numeral 101 denotes a feed gear, which is provided with symmetrical protrusions at two locations on the outer periphery and which feeds at every half rotation, and 102 is a rotary gear having a plurality of protrusions provided on the outer periphery. By the rotation of the gear 101, the projection of the feed gear 101 hooks the projection of the rotary gear 102 to rotate the rotary gear 102. The rotation of the rotary gear 102 is transmitted to the size setting gears 105 and 106 via the shaft 104, the drive shaft 108 is driven via the electromagnetic clutch 107, and the pinion gear 109 fitted to the drive shaft 108 is driven. The rack gear 110 rotates to move forward.

When the rack gear 110 moves forward, a saddle (not shown) connected to the product chuck moves by the cutting width of the tape and stops, and the tape is cut by the cutting blade that descends, and this operation is automatically performed. Is repeated.

[0004]

[Problems to be solved by the device]

 However, in the above conventional device, the position of the saddle fluctuates due to the backlash of the rack gear, and the position of the product chuck moves back and forth accordingly.Therefore, there is a problem that the cut tape becomes a product with a wide width. is there. Further, in order to change the cutting width of the tape, it is necessary to change the combination of the size setting gears 105 and 106 each time, and to change the amount of rotation. Has become.

The present invention has been made by paying attention to the above problems, and solves these problems and improves the accuracy of the feed dimension to eliminate the variation in the tape cutting width. Another object of the present invention is to provide a tape cutting device capable of easily changing the tape cutting width without increasing man-hours, improving quality and improving productivity.

[0006]

[Means for Solving the Problems]

 In the tape cutting device of the present invention, a rack gear connected to the air cylinder and a pinion gear that meshes with the rack gear are provided, and a cam clutch and an electromagnetic clutch are connected in series to the pinion gear, and from the output side of the electromagnetic clutch. The toothed belt is hung and the ball screw that is fixed through the drive shaft is rotated so that the moving nut that is screwed into this ball screw and fixed to the saddle for positioning the tape is installed. It is characterized in that the tape cutting width is set by moving the ball screw together with the saddle to move forward and backward.

[0007]

[Action]

 The tape cutting device of the present invention is provided with a rack gear connected to the air cylinder and a pinion gear that meshes with the rack gear. The toothed belt is hung, and the ball screw that is fixed through the drive shaft is rotated so that the moving nut that is screwed onto this ball screw and fixed to the saddle for positioning the tape is installed. By rotating the ball screw to move forward and backward together with the saddle, the tape cutting width can be set, which improves the accuracy of the feed size and eliminates variations in tape cutting width. Furthermore, the cutting width of the tape can be easily changed without increasing man-hours, aiming to improve quality and productivity. Door can be.

[0008]

【Example】

 1 is a plan view of a main part of an example of the tape cutting device of the present invention, and FIG. 2 is a plan view of a main part of the automatic feeding mechanism of FIG. In FIG. 1, reference numeral 1 is an air cylinder, and a rack gear 2 is attached to the operation side front end of the air cylinder 1 so as to reciprocate and rotate a pinion gear 3.

A cam clutch 4 that drives only in a fixed direction is connected to the pinion gear 3, and an electromagnetic clutch 5 is connected to the cam clutch 4. A gear 7 is attached to the output side of the electromagnetic clutch 5 and a toothed belt 6 is hung on the output side. The toothed belt 6 is attached to a drive shaft 9 for setting the tape width. It is a mechanism for being hung on the gear 8 and rotating the drive shaft 9.

Reference numeral 10 is a stopper for setting the cutting width of the tape, and by rotating a handle 11 provided at an end of the tape, the stopper 10 is moved back and forth. By hitting the stopper 10, the stroke of the rack gear 2 and thus the air cylinder 1 is determined.

The rotation amount of the pinion gear 3 is increased / decreased as the movement amount of the rack gear 2 is increased / decreased, and the increase / decrease amount of the rotation of the pinion gear 3 is transmitted to the drive shaft 9 so that the tape width can be changed. ing.

Reference numeral 12 denotes a ball screw that is inserted through an extension of the drive shaft 9 and fixed to the drive shaft 9. A moving nut 13 is fitted into the ball screw 12, and the moving nut 13 is a saddle 14 for positioning the tape. The saddle 14 can be moved back and forth by rotation of the ball screw 12.

A product chuck 15 is fixed to a tape cutting shaft 16 in front of the saddle 14, and a tape roll 17 is set on the cutting shaft 16 as shown by an imaginary line. Has become.

Next, the procedure of cutting will be described. When the handle 11 is rotated to determine the position of the stopper 10 and the tape cutting width is determined, the amount of forward movement of the rack gear 2 is determined, and the stroke of the air cylinder 1 is set.

For example, when the moving distance of the forward rack gear 2 is 62 mm, the cutting width of the tape is 12 mm. When the air cylinder 1 is operated, the rack gear 2 advances and the pinion gear 3 rotates. This rotation is transmitted to the cam clutch 4 and output via the electromagnetic clutch, and the toothed belt 6 is driven. It is transmitted to the ball screw 12 of the drive shaft 9. In response to the rotation of the ball screw 12, the moving nut 13 advances together with the saddle 14 by the cutting width of the tape and stops.

Next, the rack gear 2 starts to retreat, but when the rack gear 2 retreats, the cam clutch 4 becomes idle, the toothed belt 6 stops, and during this time, a cutting blade (not shown) from above. Goes down and is inserted into the cutting shaft 16 and the end of the original roll 17 fixed by the product chuck 15 is cut, and one cut tape becomes a product, which is automatically operated and one cycle is completed. To do. . Simultaneously with the completion of this one cycle, the relay circuit is activated to enter the start of the second cycle.

Unlike the conventional device for setting the cutting width of the tape by the rack gear, in the device of the present invention, the setting of the cutting width of the tape is performed by the ball screw 12 and the nut 13 as described above. It is possible to set the tape cutting width with high accuracy without play due to meshing. For example, in the conventional cutting device, when the width is set to 15 mm, the variation of the product width is as large as 14 to 16 mm, but in the cutting device of the present invention, it is very accurate to 14.95 to 15.05 mm. It became possible to secure high cutting.

[0018]

[Effect of device]

 In the tape cutting device of the present invention, the accuracy of the feed dimension is increased to eliminate the variation in the tape cutting width, and the tape cutting width can be easily changed without increasing man-hours, improving the quality and producing the product. The tape cutting device is suitable as a tape cutting device.

[Brief description of drawings]

FIG. 1 is a plan view of a main part of an example of a tape cutting device of the present invention.

FIG. 2 is a plan view of a main part of the automatic feeding mechanism of FIG.

FIG. 3 is a plan view of a main part of a conventional tape cutting device.

[Explanation of symbols]

 1 Air Cylinder 2 Rack Gear 3 Pinion Gear 4 Cam Clutch 5 Electromagnetic Clutch 6 Toothed Belt 9 Drive Shaft 10 Stopper

Claims (1)

[Scope of utility model registration request] 1. A tape cutting device for automatically cutting a tape or an adhesive tape wound thinly on a wide winding core into a narrow width, wherein a rack gear connected to an air cylinder and a pinion gear meshing with the rack gear are provided. Further, a cam clutch and an electromagnetic clutch are further connected to the pinion gear, a toothed belt is hung from the output side of the electromagnetic clutch, and a ball screw fixedly mounted through the drive shaft is rotated. The moving nut, which is screwed to this ball screw and fixed to the saddle for positioning the tape, moves back and forth integrally with the saddle by the rotation of the ball screw, so that the cutting width of the tape is set. A tape cutting device characterized by being made.