JPH052903U - Abnormal nail removal device in nail alignment device - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent the mixing of abnormal nails in the nail alignment process. [Structure] An angle between a nail row receiving groove and a rotary row in which nail row receiving grooves for receiving a nail row made up of a plurality of aligned nails extend at a predetermined angular interval in the radial direction of the rotary and open at the peripheral edge of the rotary. A nail row receiving station, which is arranged close to the rotary at the same angular interval as the spacing, a sensor station which detects whether there is an abnormality in the nail in the nail row, and an abnormal nail which eliminates the nail row mixed with the abnormal nail A plurality of work stations consisting of a row elimination station and a non-defective nail row feeding station that feeds a nail row with no abnormal nails to the nail passage, and the rotary intermittently rotates the rotary at a constant speed to make each nail row receiving groove for each work station. It consists of a means to calculate and.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 INDUSTRIAL APPLICABILITY The present invention is for manufacturing a connecting nail for use in a nailing machine equipped with a striking piston / cylinder mechanism, which is formed by arranging a large number of diameter-expanded headed nails (hereinafter simply referred to as nails) in parallel and connecting them with a connecting material. The present invention relates to an abnormal nail discharging device in a nail aligning device used in a nail aligning process before a nail connecting process.

[0002]

[Prior Art]

 After the nail manufacturing process for manufacturing nails from steel or stainless steel wire, the main part of the nail aligning device used in the nail aligning process for manufacturing interlocking nails is a ball vibrating part feeder or a linear vibrating type. It is a parts feeder. The nail aligner feeds a large number of nails supplied as bulk to these vibratory parts feeders to the slope-shaped nail track extending from the center of the vibratory parts feeder to the outer periphery, and suspends them. Align the nails side by side. A large number of aligned nails can be welded with a welder that welds a steel wire to the shank of the nail, or, in the case of producing connecting nails that consist of screw nails instead of regular straight nails, a screw-roller. It is sent to the processing machine.

The nail making machine used in the nail making process and the nail aligning device used in the nail aligning process manufacture nails of various standards and connecting nails made of these nails. Therefore, a small number of nails of other standards (hereinafter referred to as heterogeneous nails) remaining in the previous nail manufacturing process may be mixed in the bulk of the nails of one standard. Also, not a different type of nail, but a small number of nails that have defects in length, thickness, head diameter, etc., or bent nails (hereinafter referred to as defective nails) are mixed in the bulk of the nails of the above-mentioned standard. There is. A mixture of these different types of nails or defective nails (hereinafter collectively referred to as abnormal nails) makes a series of connected nails defective. Particularly, depending on the mixing ratio or mixing mode of non-standard nails such as the case where stainless steel connecting nails are mixed, it becomes a serious defect in the construction of a house or the like. In addition, the mixing of abnormal nails causes a large decrease in the operating rate of the welding machine. However, the conventional nail alignment device is not provided with a device that detects the presence or absence of an abnormal nail and rejects it as an abnormal nail.

[0004]

[Problems to be solved by the device]

 SUMMARY OF THE INVENTION An object of the present invention is to construct a defective nail due to mixing of abnormal nails in a row of connecting nails composed of a plurality of nails of the same standard in the nail aligning process, and especially to weld a connecting material in the nail connecting step. It is to prevent the operating rate of the welding machine from decreasing.

[0005]

[Means for Solving the Problems]

 The abnormal nail removing device in the nail aligning device of the present invention is a substantially circular plate-shaped rotary, and a plurality of nail rows that receive a nail row composed of a plurality of predetermined nails arranged in parallel as a nail row. A plurality of operations in which the receiving grooves are extended in the radial direction of the rotary at predetermined angular intervals and are opened at the peripheral edge of the rotary, and a plurality of operations are arranged close to the rotary at the same angular interval as the angular interval between the nail row receiving grooves. A station that receives nail rows, a sensor station that detects whether there are any abnormalities in the nails in the nail row, an abnormal nail row elimination station that eliminates the nail row that contains the abnormal nails, and a nail that does not have any abnormal nails. A work station having a non-defective nail row sending station for sending rows to the nail passage, and a hand for indexing each nail row receiving groove to each working station by intermittently rotating the rotary at a constant speed. Consisting of.

[0006]

[Action]

 The indexing means indexes one of the rotary nail row receiving grooves to the nail row receiving station. The one nail row receiving groove is stopped for a predetermined time and receives a predetermined plurality of nails fed through the nail passage as a nail row. The nail row intermittently rotates together with the rotary to reach the sensor station to detect whether or not an abnormal nail is mixed. The nail row containing the abnormal nails is removed from the one nail row receiving groove at the abnormal nail row removal station. On the other hand, the nail row having no abnormal nails is sent out to the nail passage from the one nail row receiving groove at the non-defective nail row sending station.

[0007]

Embodiments Embodiments of the present invention will be described in detail below with reference to FIGS. 1 and 2. The nail alignment device 1 includes a cylindrical vibrating part feeder 2, a straight nail track 3 extending downward from the upper surface of the part feeder 2 in a slope shape, and extending in a tangential direction of the part feeder 2 in a planar shape, and the nail track. 3 and an abnormal nail removing device 4 disposed in the middle part.

The parts feeder 2 is of a conventionally used ball vibration type or linear vibration type, and has a spiral shape from the central portion 5 of the parts feeder 2 to the outer peripheral portion of the parts feeder 2 and a slot. It has a nail-shaped nail track 6 and is configured to connect to the linear nail track 3. Therefore, a large number of nails supplied as a bulk to the central portion 5 of the part feeder 2 are gradually pushed out toward the nail track 6, are aligned in a head-suspended state, and descend the linear nail track 3 by its own weight.

As shown in FIG. 1, the abnormal nail removing device 4 is inclined along the slope of the straight nail track 3 and is supported by a stand 8 by a stand 7. As shown in FIG. 2, the abnormal nail removing device 4 includes an arc-shaped frame 9 slightly larger than a semicircle, and a circular rotary 10 slidably engaged with the frame 9 so as to be intermittently rotatable. , A nail row receiving station 11, a first sensor station 12, a second sensor station 13, a third sensor station 14, a non-defective nail row sending station 15, which are arranged on the frame body 9 at an angle of 45 °. It comprises a plurality of work stations including an abnormal nail row elimination station 16 and a rotary index 21.

In the case of the present embodiment, the circular rotary 10 has eight nail row receiving grooves 17 extending in the radial direction and penetrating in the front and back directions of the circular rotary 10 at an angular interval of 45 °. , The rotary index 21 causes intermittent rotation by 45 °. Therefore, these nail row receiving grooves 17 are accurately indexed by the rotary index 21 to the work stations 11, 12, 13, 14, 15 and 16. One nail row receiving groove 17 receives a nail row composed of 10 to 30 nails in a state where the expanded heads 18 of adjacent nails are in contact with each other.

The nail row receiving station 11 is on the diameter of the frame 9 along the slope of the straight nail track 3 and is located at the upper end of the slope of the diameter, and one of the interrupted ends of the straight nail rack 3 is located. 3a is configured to be slidably engaged with the peripheral surface of the circular rotary 10.

The first sensor station 12 is a station that detects the material of the nail, and is a magnetic sensor that is located on the lower surface side of the circular rotary 10 and scans the length of the nail row receiving groove 17 in the radial direction of the circular rotary 10. It has a proximity sensor (not shown). This magnetic proximity sensor sharply discriminates the material of nails, especially the distinction between iron nails and stainless nails, by magnetic output. Further, the first sensor station 12 is also provided with a magnetic proximity sensor (not shown) that detects the thickness of the nail.

The second sensor station 13 is a station for detecting the length of the nail, and has a nail length sensor unit (not shown) for scanning similarly to the case of the first sensor station 12. The nail length sensor unit consists of a pair of photo couplers or photo sensors. These photo couplers or photo sensors are arranged at the upper and lower limit positions of the tolerance error of the nail length. The nail length sensor unit detects a non-defective nail only when the photo sensor or photo coupler at the upper limit position has no output (OFF) and the photo sensor or photo coupler at the lower limit position has output (ON).

The third sensor station 14 is a station that detects the head diameter and bending of the nail, and is a type of image sensor that scans above the circular rotary 10 as in the case of the first sensor station 12. And a bend sensor (not shown), which is a kind of image sensor, that scans below the circular rotary 10 as in the case of the first sensor station 12. ..

The non-defective nail row sending station 15 is located on the above-mentioned diameter of the frame body 9 and is located at the lower end of the slope of the diameter, and the other interrupted end portion 3b of the linear nail track 3 is a circular rotary 10. It is configured to face the peripheral surface of the vehicle with a slight interval. Therefore, the shutter 22 is provided at this interval. The shutter 22 passes through the third sensor station 14 by intermittent rotation of the circular rotary 10 and reaches the non-defective nail row sending station 15 so that all the nail rows from the first, second and third sensor stations 12, 13 and 14 are reached. Only when it is confirmed by the sensor output of the non-defective nail row that the non-defective nail row is opened, the non-defective nail row sending station 15 can send the nail row toward the straight nail rack 3. Sensor output signals from the first, second and third sensor stations 12, 13 and 14 are processed by a shift register (not shown) to generate an opening / closing signal of the shutter 22.

The abnormal nail row elimination station 16 is composed of a nail row discharge path 19 without a shutter, which extends from the frame body 9 radially outward of the circular rotary 10, and an abnormal nail row storage box 20. If any one of the sensor outputs from the first, second and third sensor stations 12, 13 and 14 indicates that an abnormal nail is mixed in the nail row, the shutter 22 will not open and The nail row passes through the non-defective nail row sending station 15 to reach the abnormal nail row elimination station 16, and is thrown into the abnormal nail row storage box 20 through the nail row discharge path 19.

In the above embodiment, the sensor in each sensor station is used in the scanning method, but a sensor unit having a number of sensor elements corresponding to the number of nails in the nail row is fixed and provided. Good. By doing so, the detection time of the presence or absence of abnormality in each nail further increases depending on the number of nails accommodated in the nail row receiving groove 17.

The abnormal nail removing device of the above-described embodiment is divided into 10 to 30 nail rows and 4 to 8 stations to perform nail row inspection, non-defective nail row discharge, and defective nail row discharge. Therefore, it is possible to secure sufficient processing time for distinguishing good and bad nails. For example, when the number of revolutions of the welding machine is 2000 rpm, the discrimination processing time that can be secured as the stop time within one work station is 60 s × 30/2000 rpm = 0.000 when the nail row receiving groove 17 receives 30 nails. It will be 9s.

Further, the nail row receiving groove provided in the circular rotary 10 may be an appropriate number (eg, four) corresponding to the number of sensor stations.

[0020]

[Effect of the device]

 According to the present invention, 10 to 30 nails are excluded as a row of abnormal nails by removing abnormal nails one by one without interrupting the flow of the nail truck. The continuity of the nail flow can be maintained. Further, for example, as a nail row consisting of 10 to 30 nails, the presence or absence of abnormality of the nail is detected by stopping at the sensor station, so that the stationary time of the nail row at one sensor station can be sufficiently secured. The presence or absence of abnormality in the nail is reliably detected.

[Brief description of drawings]

FIG. 1 is a perspective view of a nail row device including an abnormal nail removing device of the present invention.

FIG. 2 is a plan view of the abnormal nail removing device according to the present invention.

[Explanation of symbols]

 4 Abnormal nail removing device 10 Circular rotary 11 Nail row receiving station 12 First sensor station 13 Second sensor station 14 Third sensor station 15 Good nail row sending station 16 Abnormal nail row removing station 17 Nail row receiving groove 21 Rotary index

Claims (1)

[Claims for utility model registration] [Claim 1] A substantially circular plate-shaped rotary,
A rotary in which a plurality of nail row receiving grooves for receiving a nail row composed of a predetermined plurality of nails arranged in parallel as nail rows are extended at a predetermined angular interval in the radial direction of the rotary and opened at the peripheral edge of the rotary; A plurality of work stations arranged in proximity to the rotary at the same angular interval as the row receiving groove, the nail row receiving station, and a sensor station for detecting the presence or absence of abnormality of the nail in the nail row. , A work station having an abnormal nail row elimination station for eliminating nail rows mixed with abnormal nails, a non-defective nail row feeding station for feeding nail rows without abnormal nails to the nail passage, and the rotary for intermittent rotation of the rotary at a constant speed An abnormal nail row eliminating device in a nail aligning device comprising means for indexing each nail row receiving groove to each work station.