JPH0128991Y2 - - Google Patents

Description

[Detailed description of the invention] The invention of this application is that a screw blank that supports the screw head and is conveyed to the upper part in a vertical position is inserted into a washer waiting on a guide rail at the lower part. This invention relates to a chute necessary for assembling a shaped washer to a screw blank and its device.

(Prior art) In a conventional screw and washer combination machine, the screw and washer combination combines a screw blank transferred by one chute and a washer transferred by flowing through the other chute and supplies the combination to a thread rolling machine. Although the machine is intended for use, washer is shaped so that it does not flow smoothly through the chute, for example, the outer edge of the washer is very thin, a part of the outer edge is rolled up and down, etc., and the washer overlaps with each other. Since there are various types of screws that are difficult to separate, current screw and washer combination machines cannot automatically combine such washers with screw blanks, so currently the combination work is done manually.

(Purpose of the invention) In view of the current situation as described above, it is possible to automatically and efficiently combine an umbrella-shaped washer, which is a type of chevron-shaped washer and has a cylindrical hakama part into which a screw shaft is inserted in the center, with a screw blank in a particularly efficient manner. The present invention provides a washer chute and its equipment.

(Summary of the structure of the invention) Now, one embodiment of the invention will be described with reference to the drawings. As shown in FIG. Hakama part 1 slightly below the circumferential edge 12
1 has a protruding shape. For a screw and washer combination machine that can be installed on the machine stand at a lower position from a circular parts feeder that can be installed at an upper position to convey the S-shaped spring washer and flat washer that are conventionally used for such a shape. Even if a known U-shaped grooved chute, which can be installed upright with some inclination, is adopted, the outer circumferential edge 12 of the washer is too difficult to transport downward within the chute due to its own weight and vibrations, since the umbrella-shaped washer has a complicated shape. Because they polymerize and become entangled with each other, it is not possible to smoothly and continuously supply washer to the screw and washer combination machine.

Therefore, the applicant has proposed a chute and its device for smoothly and efficiently supplying the umbrella-shaped washer 10 to a combination machine.As shown in FIG. The umbrella-shaped washer 10 is supplied from the feeder through a screw chute 51, and the umbrella-shaped washer 10 is supplied from the first washer chute 50, which is wider and larger than the other circular parts feeder, to the second washer chute of the present proposal in large quantities in any free position. 20, and are aligned in a line by the second washer 20, and the screws are
It is fed to the washer combination machine. The umbrella-shaped washer 10 is combined with the screw blank and fed into a single unit through a discharge chute 52 to a thread rolling machine. When passing through the first washer chute 50, the umbrella-shaped washer 10 falls to the second washer chute 20 in a free position, regardless of its position and direction. The front side of the first washer chute 20 is tilted upward by 30 to 45 degrees on the straight-moving parts feeder 21, and the center point of the screw and washer combination machine 40 and the front front end of the second washer chute 20 are placed in the same position. The bottom line of the front of the second washer chute 20 is opened 5 to 6 degrees forward with respect to the straight line connecting the parts, and the second washer chute 20 has a slight slope in the longitudinal direction, so that the straight parts feeder 2
It is located on 1. A storage hopper 30 is disposed at the lower front of the second washer chute 20 to store the umbrella-shaped washer 10 that has fallen from the second washer chute 20 and transfer it to the parts feeder again. The storage hopper 30 is a V-shaped hopper that spreads out at the end and carries the umbrella-shaped washer that has fallen in the opposite direction to the direction in which the umbrella-shaped washer moves in the second washer chute 20. The hopper 30 is placed on a linear parts feeder 31 that is arranged in parallel with the feeder 21 and vibrates in a direction opposite to that of the parts feeder 21, so that the hopper 30 can move on one side without contacting the lower part of the second washer chute 20. It is arranged on the straight-advance type parts feeder 31 in a posture in which it is inserted.

Now, to explain in detail the structure of the second washer chute 20 of the present invention, it is mounted on the linear parts feeder 21, and the right end of the main body is connected to the second washer chute 20 disposed at the bottom of the first washer chute 50. The center part of the main body of the washers 20 has a rectangular long rod shape, and the upper surface of the right end part is curved in an arc in order to smoothly flow the umbrella-shaped washers 10 falling from the first washers chute 50 in any free position. A curved stand 28 is formed.

Next, the left end of the second washer chute 20 is inserted and positioned so as not to contact the lower part of the screw receiving rotary disk 41 of the washer combination machine 40, which is a screw that vertically suspends and transfers the screw. Therefore, the height of the main body is cut to form a lower notch base 22, and furthermore, a washer holder 23 is formed at the leftmost end lower than the notch base 22, and the rear side of the washer holder 23 is Guide rail 44 arranged at the bottom of the screw and washer combination machine 40
Connect to the end of the The legs of the screw blank conveyed above the umbrella-shaped washer 10 waiting on the washer holder 23 begin to fit into the guide rail 44, so that the leftmost end of the washer holder 23 is A plate-shaped fall prevention plate 27 is screwed to ensure the positioning necessary for the umbrella-shaped washer to fit with the screw and to prevent it from falling off the chute.

Next, the washer passage groove 24, which is the key to the present invention, is carved in a straight line at the lower front of the chute in a U-shape with an open front, as shown in FIG. An upper surface notch groove 25 having a shape similar to that shown in FIG. (See Figure 5b). The umbrella-shaped washer 10 passes over the curved table 28 from the first washer chute 50 in an arbitrary posture, and the washer's hakama portion 11 passes through the washer passage groove 24.
An auxiliary plate 26 is screwed onto the bottom surface of the chute of the curved table 28 to assist the fitting. As shown in FIG. 3b, the width w and depth d of the groove 24 are both determined by the outer diameter and height of the hakama part 11 of the umbrella-shaped washer 10, and the width w is larger than the base of the hakama part 11. The dimensions are determined to be slightly larger, and the depth d is the outer circumferential edge 1.
2 is carved slightly deeper than the height to the lower end surface of the hakama part 11, so the washer 10 supports the hakama part 11 by the lower side of the groove 24, and the outer circumferential edge 12 is cut into the groove 24.
The groove 24 is formed so that the material is transferred in contact with both side surfaces of the material. In addition, as shown in Fig. 3c, the hakama part 1
In addition to the grooves (w, d) into which the outer circumferential edge 12 is fitted, a groove additionally carved in the upper surface with a width w ₁ and a depth d ₁ into which the outer circumferential edge 12 can be fitted may also be used as an alternative example. It can also be adopted.

Finally, as shown in Figure 3 a and c, the curved platform 2
The purpose of transferring the washer one by one is because the umbrella-shaped washer 10 with the hakama part 11 inserted into the groove 24 by sliding the hakama part 11 of another umbrella-shaped washer may be stuck in the groove 24 and transferred into the groove 24. Curved platform 2
8 and screws the double prevention plate 29 onto the upper part of the groove 24 of the main body. The inner surface shape of the lower end of the double prevention plate 29 is carved to follow the upper surface shape of the outer circumferential edge 12.

The above-mentioned second washer chute 20 for the umbrella-shaped washer has its front surface tilted upward by 30 to 45 degrees on the top surface of the linear parts feeder 21 that vibrates toward the screw and washer combination machine 40, and is attached to the screw and washer combination machine 40. The linear parts feeder 2 is arranged so as to be shifted forward at an angle of 5 to 6 degrees, and further parallel to the linear parts feeder 21.
A wide-ended V-shaped storage hopper 30 is mounted on another linear parts feeder 31 whose vibration direction is opposite to that of the second washer chute 20 and is inserted into the lower part of the second washer chute 20 without contact. This is a combination device for umbrella-shaped washers.

The umbrella-shaped washer combination device of the present invention can be applied to any type of screw and washer combination machine that suspends and transfers a screw and hooks and fits a washer waiting on a guide rail. However, as an example, as shown in FIG. 4, the screw and washer combination machine 40 is a rotary screw receiving rotary circle having a groove in the circumferential edge for suspending and supporting the screw blank on the machine base 45. A screw head pressing spring disk 42 that presses the head of the screw blank and holds the screw blank vertically is installed on the plate 41, and the spring disk 42 is coaxially screwed and fixed from above by a pressing disk 43. ing. A screw and washer combination guide rail 44 is disposed at the bottom of the screw receiving rotary disk 41 for waiting the washer, and transporting the washer in combination with the screw, and a discharge chute 52 is disposed at the end of the guide rail 44. It has a specific configuration.

(Function of the device) To describe the function resulting from the configuration of the device described above, the umbrella-shaped washer 10 falls from the first washer chute 50 onto the curved table 28 of the chute 20 in an arbitrary posture, but the second The washer chute 20 has its front inclined at an angle of 30 to 45 degrees, and is arranged at an inclination of 5 to 6 degrees with respect to the screw and washer combination machine 40, so that the hakama portion 11 of the umbrella-shaped washer 10 passes through the washer. Easy to enter the groove 24,
Also, the inserted washer 10 makes the hakama part 11 fit into the groove 24.
The groove 24 is supported by the lower side and restrained by the upper side so that the outer circumferential edge 12 is in contact with the upper and lower surfaces of the groove 24.
The umbrella-shaped washer 10, which was not able to fit the hakama part 11 into the washer passage groove 24, fell from the chute 20 into the storage hopper 31 disposed at the bottom and was thrown out of the machine. The waste is then discharged for reuse. Washer passage groove 2
The umbrella-shaped washer 10 being transferred through the groove 24 is controlled by a double prevention plate 29 disposed midway, and advances one by one through the groove 24 in an oblique position as shown in FIGS. 5a, b, and c. When the hakama part 11 is inserted into the groove 24 and is supported by the lower side, and the outer circumferential edge 12 is supported by both upper sides of the groove 24 and moves forward toward the washer holder 23, the groove 24 is placed on the upper surface as shown in figure b. The umbrella-shaped washer 10 reaches the notch groove 25 and the hakama part 11 is connected to the upper surface notch groove 25.
The umbrella-shaped washer 10 advances with the lower half of the outer circumferential edge 12 in contact with the upper surface of the lower side of the groove and is stopped by the fall prevention plate 27. It is in a standby state waiting for the screw to be inserted and is then transferred and fitted to the screw leg. In addition, the auxiliary plate 26 screwed to the lower bottom surface of the curved table 28 makes it easier for the umbrella-shaped washer 10 to fit the hakama part 11 into the groove 24, and at the same time, when the umbrella-shaped washer 10 that could not be inserted falls, it vibrates forward. A V-shaped storage hopper 3 is disposed on another linear parts feeder 31 that vibrates in the opposite direction.
Guide it to fall to 0.

(Effects of the invention) The assembly device for umbrella-shaped washers according to the present invention has a simple structure and is strong, so anyone can easily operate it, and it is also effective in automatically mass-producing the combination of umbrella-shaped washers and screw blanks. be.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of the umbrella-shaped washer, and the second
The figure is a perspective view of a screw and washer combination machine equipped with an umbrella-shaped washer combination device of the present invention.
FIG. 3 shows a chute for an umbrella-shaped washer combination device, in which a is a front view, b is a side view, c is a side view showing another plan for the passage groove 24, and d is a side view showing the mounting shape of the double prevention plate 29. Fig. 4 is a partially enlarged view of Fig. 2 showing the transition of the umbrella-shaped washer to a screw and washer combination machine, and Fig. 5 is an operational view showing the relationship between the chute and the washer. A cross-sectional explanatory view of the curved table 28, and b and c are cross-sectional explanatory views of the washer holder 23. 10...Umbrella-shaped dresser, 11...Hakama section, 20
... Second washers chute, 23 ... Washers holder, 24 ... Washers passing groove, 25 ... Upper surface notch groove, 26 ... Auxiliary plate, 27 ... Fall prevention plate, 28 ... Curved stand, 44 ... ...Combination guide rail, 29...Double prevention plate, d...Groove depth, w
...The width of the ditch.

Claims (1)

[Scope of utility model registration request] In a screw and washer combination machine, in which a screw blank whose screw head is supported by a support plate and is conveyed upward in a vertical position is inserted into a washer waiting on a guide rail at the lower part, the front surface is inclined upward, and A long and short washer combination chute, which is disposed on the linear parts feeder 21 with a slight slope in the longitudinal direction relative to the screw and washer combination machine 40, fits the hakama part 11 of the umbrella-shaped washer 10 and forms an outer circle. A U-shaped washer passage groove 24 having a depth d and a width W, which supports the peripheral edge 12 on both upper surfaces of the groove, is carved across the entire length at the lower front of the chute 20, and in a part of the chute 20. A double prevention plate 29 is screwed onto the upper part of the washer passage groove 24, and the outer circumferential shape of the umbrella-shaped washer 10 is formed on the inner surface.The right end of the chute 20 forms a curved base 28 whose upper surface is arcuate, and the left end of the chute A low slope washer holder 23 connected to the guide rail 44 of the screw and washer combination machine 40 is formed in the part, and a groove 25 passing through the washer holder 23 supports the lower surface of the hakama part 11 of the umbrella-shaped washer 10 and extends outward. A combination device for an umbrella-shaped washer characterized in that an upper surface cutout groove 25 is formed in which only the lower half of the circumferential edge 12 is supported by the lower upper surface of the groove.