JP6928439B2 - Implantable bolt supply device - Google Patents

Description

The present invention relates to a feeding device that determines the length and direction of an implantable bolt.

Conventional implantable bolt supply devices are disclosed in Patent Document 1 and Patent Document 2. First, the implantable bolt to be handled will be described. Generally, the implant bolt includes a male screw portion formed at both ends and a cylindrical portion arranged in an intermediate portion so as to be sandwiched between the male screw portions. Further, the implantable bolt has directional properties, and the shapes of the end faces of both male threaded portions are different. One end face is tapered or arcuate, and the other end face is flat. Further, the implantable bolts shown in Patent Document 1 are set to two different lengths having different total lengths.

Next, the conventional implantable bolt supply device includes a length determination unit that determines the difference in the total length of the implantable bolts supplied from the upstream, a direction determination unit that determines the difference in the end face shape of the male screw portion of the implantable bolt, and a direction. It is composed of a swivel unit that swivels the implant bolt at a predetermined angle based on the discriminant result of the discriminating unit, and a discharge unit that discharges the implant bolt that has been turned in a unified direction by the operation of the swivel unit to the downstream. Further, the direction determination unit of Patent Document 1 includes a sensor that is pressed against the end faces of male screw portions having different shapes and determines the directionality based on the difference in the pushing amount, and turns based on ON or OFF of this sensor. It is configured to select the turning angle of the unit and unify the transport direction of the implant bolt.

Further, the direction determination unit of Patent Document 2 corresponds to a unit having a difference in length between the lengths of both male threads of the implant bolt, and blows compressed air to the outer periphery of the temporarily held implant bolt. It is configured to determine the directionality based on the air pressure difference. That is, since the lengths of the male threaded portions at both ends are different, the air blowing holes are arranged at positions where the air is blown to the cylindrical portion in one direction and to the male threaded portion in the other direction. As a result, if the air pressure is low, it is determined that there is a male screw portion that easily leaks air, while if the air pressure is high, it is determined that there is a cylindrical portion that does not easily leak air. Is possible. Based on the judgment of this directionality, the implanted bolts inspected are swiveled to unify the transport direction.

As described above, since the conventional implantation bolt supply device includes the length determination unit and the direction determination unit, not only the types of the implantation bolts having different total lengths are determined, but also the directions of the implantation bolts whose types are determined are also determined. It has the feature of being able to.

Special Fair 01-1259 Gazette Tokukousho 52-34095 Gazette

However, although the conventional implantable bolt supply device can determine the type of the implantable bolt by the length discrimination unit, there is a problem that the inspection of the total length tolerance for each type cannot be performed. Further, since the former direction determination unit can only obtain information on the end face shape of the implant bolt, there is also a problem that, for example, a defective product in which both ends of the implant bolt are flat cannot be identified. In addition, since the latter direction determination unit can only obtain information on the positional relationship of the columnar portion of the implantation bolt, for example, it determines a defective product in which the formation points of the arc and the flat, which are the regular tip shapes, are exchanged. There was also the problem of not being able to do it.

The implantable bolt supply device according to the present invention was created in view of the above problems, and the orientation of the implantable bolts having a cylinder in the middle portion and male threads formed at both ends is discriminated and aligned in a uniform direction. In the implant bolt supply device to be supplied, a separate supply unit that separates and supplies the implant bolts that are randomly arranged one by one, a transfer unit that slides and transfers the implant bolts that are separately supplied from the separate supply unit, and the transfer unit. An inspection unit that inspects the implant bolt transferred to a predetermined position by the transfer unit, a swivel unit that can swivel the implant bolt received from the transfer unit, and a command is sent to the swivel unit based on the inspection information of the inspection unit. The transfer unit is provided with a control means for controlling, and the transfer unit is formed by fastening the implant bolt at a predetermined position before transferring to the swivel unit, and the inspection unit is engaged with an intermediate portion of the implant bolt. consisting includes a direction determination unit for determining the direction of the stud, an end face shape discriminating unit for discriminating the end surface shape of the stud on the basis of the pressure of the compressed air supplied to the lower end of the stud Te. It is desirable that the inspection unit is provided with a full length inspection unit that presses the end face of the implantation bolt to determine whether or not the total length of the implantation bolt is within a preset tolerance range. Further, it is desirable that the full length inspection unit is configured to discriminate the type according to the length of the total length of the implant bolt.

The implantable bolt supply device according to the present invention determines the positional relationship between the cylinders of the implantable bolt by the direction determination unit to determine the directionality of the implantable bolt, and determines the end face shape of the implantable bolt by the end face shape determination unit. You can judge. This has the advantage that not only the directionality of the implant bolt but also whether the end face shape of the implant bolt has a regular arc or flatness can be accurately determined. Further, since the implantable bolt supply device according to the present invention includes the full length inspection unit in the inspection unit, there is an advantage that it is possible to determine whether or not the total length of the implantable bolt is within a regular tolerance range. Further, since the full-length inspection unit is configured to determine the type of the implant bolt to be inspected according to the length of the total length, it is possible to recognize different full-length implant bolts and handle a plurality of types of implant bolts. There are also advantages.

It is a partial notch sectional view which shows one Embodiment which concerns on this invention. It is operation explanatory drawing explaining the main part of this invention. (A) is an explanatory diagram for explaining the direction determination unit, (b) is an explanatory diagram when the short male screw B2 is directed upward, and (c) is an explanatory diagram when the short male screw B2 is directed downward. It is explanatory drawing. It is operation explanatory drawing explaining the operation of the swing part which concerns on this invention. (A) is an explanatory view for explaining a state in which the implant bolt is received from the slide block with the male screw B2 facing upward, and (b) is a state in which the swivel plate is swiveled 90 degrees counterclockwise from the state of (a). It is explanatory drawing which shows. Further, (c) is an explanatory view for explaining a state in which the male screw B2 is directed downward and the implant bolt is received from the slide block, contrary to (a), and (d) is a swivel plate from the state of (c). It is explanatory drawing which shows the state which turned 90 degrees in the clockwise direction.

Hereinafter, the implantable bolt supply device according to the present invention will be described with reference to FIGS. 1 to 3. The implantable bolt supply device 1 of the present invention supplies and conveys the implantable bolts B described later in a uniform direction. First, the implantable bolt B, which is an object to be supplied and transported, will be described.

The implanting bolt B is composed of male screws B2 and B3 having different lengths formed on both sides thereof and a cylinder B1 integrally formed in an intermediate portion so as to be sandwiched between the male screws B2 and B3. The outer diameter of the male screw B2 and B3 is set to be larger than the outer diameter of the male screw B2 and B3. Further, in the implant bolt B, the end face of the male screw B2 having a short length is formed in an arc shape, while the end face of the male screw B3 having a long length is formed flat. Therefore, the implanting bolt B has a point where male screws B2 and B3 having different lengths are arranged on both sides of the cylinder B1 and a point where the end faces of the male screws B2 and B3 have different shapes, as described above. The transport direction must be uniformly aligned and supplied to a screw tightening machine or the like (not shown).

The implant bolt supply device 1 according to the present invention slides a separate supply unit 10 that separates and supplies the implant bolts B that are randomly arranged one by one, and an implant bolt B that is separately supplied from the separate supply unit 10. The transfer unit 20 to be transferred, the inspection unit 30 for inspecting the implant bolt B transferred to a predetermined position by the transfer unit 20, the swivel unit 40 capable of swiveling the implant bolt B received from the transfer unit 20, and the above. It is provided with a control means for sending and controlling a command to the turning unit 40 based on the inspection information of the inspection unit 30.

The separate supply unit 10 is provided in a fixed block 11 provided with a through hole 11a capable of arranging and passing implant bolts B randomly arranged and conveyed from a ball feeder or the like (not shown) in series, and in lower and intermediate portions of the fixed block 11. Support rods S1 that are connected to the tips of the blocking cylinders SL1 and SL2 that are arranged respectively and the blocking cylinders SL1 that are arranged below the fixing block 11 and that support the end faces of the implant bolts B that pass through the through hole 11a. And a pressing rod S2 connected to the tip of the blocking cylinder SL2 and arranged in parallel with the support rod S1.

The transfer unit 20 connects the frame 22 to which the separate supply unit 10 is attached, the slide block 21 slidably arranged in the frame 22 in the left-right direction, and the slide block 21 and moves in the left-right direction. It is equipped with a free slide cylinder SL3.

The slide block 21 includes an insertion passage 21a through which the implantation bolt B can be inserted. The insertion passage 21a is configured to be able to receive the implant bolt B discharged from the separate supply unit 10, and its inner diameter is set to be substantially the same as the maximum diameter of the implant bolt B.

The frame 22 is composed of a top plate 22a to which the separation supply unit 10 is attached, a bottom plate 22b arranged so as to face the top plate 22a, and connecting plates 22c and 22d connecting the top plate 22a and the bottom plate 22b. It is composed. The connecting plate 22c is formed by attaching the slide cylinder SL3, and the slide block 21 is connected to the movable rod of the slide cylinder SL3. Further, the connecting plate 22d is formed by attaching a positioning cylinder SL4 which is arranged opposite to the slide cylinder SL3 and exhibits a higher output than the slide cylinder SL3, and the positioning cylinder SL4 slides toward the connecting plate 22d. The end surface of the slide block 21 is pressed to regulate the slide cylinder SL3 so that the entire stroke is not fully extended.

That is, when the slide cylinder SL3 is not operated, the slide block 21 stays at a position where the insertion passage 21a communicates with the through hole 11a (hereinafter referred to as a receiving position), and both the slide cylinder SL3 and the positioning cylinder SL4 are operated. When the insertion passage 21a stays at a position near the middle of the frame 22 (hereinafter referred to as an inspection position), when the slide cylinder SL3 is operated and the positioning cylinder SL4 is reactivated, the insertion passage 21a is the bottom plate. It stays at a position communicating with the sliding hole 22b1 provided in 22b (hereinafter, referred to as a discharge position). Therefore, the implanting bolt B supplied from the separate supply unit 10 can move in the order of the receiving position, the inspection position, and the discharging position.

The inspection unit 30 is configured to enable various inspections of the implantation bolt B that has moved to the inspection position, and has a full length inspection unit 31 that inspects whether the total length of the implantation bolt B is within a predetermined tolerance range, and the implantation. A direction determining unit 32 that engages with the cylinder B1 of the bolt B to determine the directionality of the implanting bolt B based on the difference in length of the male screws B2 and B3, and an end face that can recognize the difference in the end face shape of the implanting bolt B. A shape discriminating unit 33 is provided.

The total length inspection unit 31 is configured not only to inspect whether or not the total length is within the tolerance range to determine whether it is good or bad, but also to recognize implant bolts having different total lengths, and to implant several types having different total lengths. It is also possible to determine the type of bolt. The full-length inspection unit 31 is an air cylinder that is attached to the top plate 22a and can press the upper end of the implant bolt B that has moved to the inspection position, and an abutting portion that comes into contact with the upper end of the implant bolt B and stops operating. It consists of a cylinder switch (not shown) that can detect the position. Therefore, when handling one type of implantable bolt B, two cylinder switches corresponding to the upper limit and the lower limit of the tolerance of the total length of the implantable bolt B are attached to the air cylinder and connected to the control means by wiring. .. Further, when handling two types of implanting bolts, four cylinder switches are attached to the air cylinder. Further, it may be replaced with a linear scale (not shown) that has a contactor to measure the distance from the cylinder switch. In this case, the control means is set with the upper and lower limit values of the total length tolerance of the implant bolt according to the type to be handled in advance.

The direction discriminator 32 engage the cylinder B1 of studs B in a state of being pressed to the full-length inspecting unit 31 moves to the inspection position, as shown in FIG. 2 (a) to FIG. 2 (c) It is configured so that the direction of the implantable bolt can be recognized by determining whether the male screws B2 and B3 having different lengths are facing up or down. The direction determination unit 32 includes a lateral push cylinder 32a that is attached to the frame 22 and can extend in a direction orthogonal to the extending direction of the implanting bolt B, and a lateral push cylinder 32a that is connected to the lateral push cylinder 32a and is capable of passing compressed air. It is composed of a member 32b and a pressure switch 32c that emits a signal when the pressure of compressed air passing through the horizontal piercing member 32b reaches a predetermined value. Therefore, the slide block 21 that has moved to the inspection position is provided with a notch that can guide the horizontal piercing member 32b to the insertion passage 21a.

The horizontal piercing member 32b is formed into a curved surface along the cylinder B1 of the implanting bolt B whose tip is pressed from the side, and the compressed air passing through the horizontal piercing member 32b is discharged from the curved surface. Can be done. However, the the stud B is in a state where the male screw B2 directed downward toward the top male screw B3 as shown in FIG. 2 (c), the pressure switch 32c so the compressed air is unlikely to be discharged from the curved surface, It detects that the internal pressure is high and transmits a high voltage signal to the control means. On the other hand, when the implanting bolt B is in a state where the male screw B2 is directed upward and the same B3 is directed downward as shown in FIG. 2 , the compressed air is discharged from the curved surface through the male screw B3, so that the pressure switch 32c is pressed earlier. Unlike, it detects low pressure and does not emit a signal. As a result, the direction determination unit 32 can determine whether the male screw portion B3 of the implanting bolt B to be inspected is facing upward or downward.

The end face shape determining portion 33 is arranged on the bottom plate 22b, and is configured to be able to support the end face of the implant bolt B in a state of being moved to the inspection position and pressed by the full length inspection portion 31. The end face shape determining unit 33 is configured to be able to blow compressed air to be sent through the end face shape determining unit 33 to the lower end surface of the implanting bolt B, and a plurality of air feeding passages at positions offset by a predetermined distance from the axis of the implanting bolt B. It is provided with 33a and a pressure switch 33b for detecting the pressure of compressed air passing through the air feeding passage 33a.

As a result, when the implant bolt B moved to the inspection position is in a state where the male screw B3 is directed upward and the male screw B2 is directed downward as shown in FIG. 2 (c), the shape of the lower end surface thereof is arcuate as described above. Therefore, the compressed air is discharged into the insertion passage 21a through the air delivery passage 33a. In this case, the pressure of the compressed air in the pressure switch 33b does not increase and no signal is sent to the control means. On the other hand, if a state where the stud bolt B inspection position as shown in FIG. 2 (b) toward the lower male screw B3 facing upward male thread B2, because its lower surface shape of the flat, the compressed air is the air It is difficult to discharge from the delivery passage 33a to the insertion passage 21a. Therefore, the pressure of the compressed air in the pressure switch 33b is higher than the previous one, and it is detected that the pressure switch is in a high pressure state, and a high pressure signal is transmitted to the control means. In this way, the end face discriminating unit 33 blows compressed air onto the lower end surface of the implant bolt B pressed by the full length inspection unit 31, and discriminates the end face shape based on the pressure in the piping path of the compressed air. Can be done.

As described above, the implantable bolt supply device of the present invention can not only determine the directionality of the cylinder B1 of the implantable bolt B to be inspected by the direction determination unit 32, but also determine the end face shape of the implantable bolt B. Therefore, even if the defective product is mixed in by mistake in the locations where the arc shape and the flat surface are formed in the manufacturing process of the implant bolt, it can be determined that the implant bolt is a defective product.

The bottom plate 22b includes the sliding hole 22b1 capable of sliding the implant bolt B downward from the insertion passage 21a of the slide block 21 located at the discharging position, and the swivel portion 40 is provided on the lower surface of the bottom plate 22b. Is placed.

The swivel portion 40 is provided with a communication hole 41a communicating with the sliding hole 22b1 and swivels around a swivel axis orthogonal to the extending direction of the communication hole 41a, and the swivel plate 41 is swiveled. A guide member 42 that freely guides, a swivel drive source 43 that is fixed to the guide member 42 and swivels the swivel plate 41 at a predetermined angle, and an implant bolt B existing in the swivel plate 41 that swivels at a predetermined angle are guided downstream. It is composed of a possible guide member 44.

The swivel drive source 43 is connected to the control means by wiring, and is swiveled by a drive signal emitted from the control means based on the determination results of the full length inspection unit 31, the direction determination unit 32, and the end face shape determination unit 33. The plate 41 is rotated 90 degrees clockwise or counterclockwise. Further, the guide member 42 includes the guide member 44 and an air piping joint 45 that is arranged so as to face the guide member 44 and can supply compressed air supplied from the outside to the guide member via the communication hole 41a. Be prepared. As a result, the swivel portion 40 can arrange the implanting bolt B slid down from the slide block 21 in a uniform direction and supply it to a screw tightening machine or the like (not shown).

1 Implanted bolt supply device 10 Separation supply unit 20 Transfer unit 21 Slide block 21a Insertion passage 22 Frame 30 Inspection unit 31 Full length inspection unit 32 Direction determination unit 32c Pressure switch 33 End face shape determination unit 33b Pressure switch 40 Swivel unit 41 Swivel plate 41a Communication Hole B Implanting bolt B1 Cylinder B2 Male screw (short, arc)
B3 male screw (long, flat)

Claims (3)

In an implant bolt supply device that has a cylinder in the middle and male threads on both ends to determine the direction of the implant bolt and supply it in a uniform direction.
A separate supply unit that separates and supplies the implant bolts that are randomly arranged one by one, a transfer unit that slides and transfers the implant bolts that are separately supplied from this separate supply unit, and a transfer unit that transfers them to a predetermined position. It is provided with an inspection unit that inspects the implanted bolts, a swivel unit that can swivel the implant bolts received from the transfer unit, and a control means that sends a command to the swivel unit based on the inspection information of the inspection unit to control the operation. It's made up
The transfer portion is formed by fastening the implant bolt in a predetermined position before transferring to the swivel portion.
The measurement part, the a is engaged with the intermediate portion of the stud direction discriminator for discriminating the direction of the stud, the end face shape of the stud on the basis of the pressure of the compressed air supplied to the lower end of the stud An implantable bolt supply device including an end face shape discriminating unit for discriminating between. The first aspect of claim 1 is characterized in that the inspection unit includes a full length inspection unit that presses the end face of the implantation bolt to determine whether or not the total length of the implantation bolt is within a preset tolerance range. Implanted bolt supply device. The implant bolt supply device according to claim 2, wherein the total length inspection unit is configured to determine the type of the implant bolt according to the length of the total length.

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