JP6898766B2 - Parts supply equipment - Google Patents

Description

The present invention relates to a component supply device that inspects the entire length of a rod-shaped component with a head and supplies it to the next process.

The conventional parts supply device is disclosed in Patent Document 1, and includes a transfer path in which a rivet of an example of a rod-shaped component with a head to be inspected is suspended and vibrated to be sequentially conveyed, and a transfer path downstream of the transfer path. It is provided with a pair of photoelectric sensors capable of irradiating a rivet arranged and suspended in the transfer path with a laser beam, and a control unit for determining the quality of the rivet length based on the output signal of the photoelectric sensor. ..

The photoelectric sensor is arranged to irradiate the laser beam in a direction orthogonal to the extending direction of the transfer path, and the laser beam forms a band shape extending in the axial direction of the rivet. Further, the photoelectric sensors are arranged so as to sandwich the rivet to be inspected, and are arranged at a height at which the tip of the rivet is irradiated with the laser beam. Further, the photoelectric sensor is configured such that one of the photoelectric sensors irradiates the laser beam and the other receives the laser beam, and the control unit sets a voltage value according to the received amount of the received laser beam. It is configured to output to.

In the conventional component supply device configured in this way, the laser beam emitted from one photoelectric sensor is blocked by the rivet, and the blocked laser beam is received by the other photoelectric sensor. Can determine whether or not the leg length of the rivet is normal from the amount of received light received.

Japanese Unexamined Patent Publication No. 2000-95328

However, in the conventional parts supply device, the leg length of the rivet is judged as good or bad based on the amount of light received from the photoelectric sensor, so that the laser beam irradiating in a dusty environment may be blocked by the dust. Alternatively, the dust easily adheres to the irradiation surface that emits the laser beam or the light receiving surface that receives the laser beam. Therefore, there is a problem that the leg length cannot be accurately inspected in an environment where dust or the like flies.

Further, in the conventional parts supply device, since the rivet head is hung and the tip of the rivet leg is irradiated with a laser beam for inspection, only the leg length of the rivet can be inspected. There was also a problem that the total length including the head could not be inspected. As a result, for example, if the two rivets to be inspected have different head heights and the same leg length, the conventional component supply device cannot determine the difference in head height between the two rivets.

The present invention has been created in view of the above problems, and is a hanging member that suspends and supports a rod-shaped part with a head, and a pushing means for pushing up the rod-shaped part with a head suspended from the suspension member from below to above. And a backup member that regulates the headed rod-shaped part fixed above the hanging member and pushed up by the pushing means so as not to be pushed up by a predetermined height or more, and the headed rod-shaped part regulated by the backup member. The measurement means is provided with a measuring means for measuring and outputting a dimension corresponding to the total length, and a control means for comparing the measured value of the measuring means and a preset set value to determine the quality of the total length of the headed rod-shaped part. The means is a contact-type sensor that always projects in a direction of pushing up the rod-shaped part with a head and slides downward, and is characterized in that it is attached to the pushing-up means. The hanging member is provided with a U-shaped groove for guiding and receiving the headed rod-shaped part supplied from the previous process, and is suspended in the receiving position for receiving the headed rod-shaped part from the previous process and the U-shaped groove. After passing through the inspection position where the headed rod-shaped part is measured by the measuring means and the receiving position and the inspection position in order, the suspended state of the headed rod-shaped part is released from the U-shaped groove and slid downward to be discharged. It is preferable that it is configured to move in the horizontal direction together with the slide block that slides and moves to the discharge position in order. Further, the pushing-up means includes an inspection rod that comes into contact with the tip of the leg of the headed rod-shaped part located at the inspection position and guides the outer circumference of the leg, and the headed rod-shaped part is provided with the backup member and the inspection rod. It is preferable that the rod is pressed in the axial direction and measured by the measuring means.

Since the component supply device of the present invention measures the total length including the head of the rod-shaped component with a head to be measured and can judge the quality based on the measurement result, it is a different product having a different head height as in the conventional case. Has the advantage of being able to detect. Further, since the parts supply device of the present invention uses the measuring means as a contact type sensor, there is an advantage that it is unlikely that the measuring means does not operate normally even in an environment where dust or the like flies. There is also. Further, the component supply device of the present invention has an advantage that it is not affected by vibration of the suspension member, for example, because the rod-shaped component with a head can be separated upward from the suspension member for measurement. Further, since the component supply device of the present invention includes an elevating block for fitting the leg portion of the rod-shaped component with a head to be measured and pushing it upward, it is possible to regulate that the outer circumference of the leg portion is tilted by a predetermined angle or more. This also has the advantage of being able to perform highly accurate measurements.

It is the schematic explanatory drawing of one Embodiment of the parts supply apparatus which concerns on this invention. (A) is an explanatory view showing an internal state, and (b) is a cross-sectional explanatory view of a main part AA of (a). It is explanatory drawing for demonstrating the operation which shifts from the state of FIG. 1 to the next state. (A) is an explanatory view showing an internal state, and (b) is a cross-sectional explanatory view of a main part AA of (a). It is explanatory drawing for demonstrating the operation which shifts from the state of FIG. 2 to the next state. (A) is an explanatory view showing an internal state, and (b) is a cross-sectional explanatory view of a main part AA of (a). It is explanatory drawing for demonstrating the operation which shifts from the state of FIG. 3 to the next state. (A) is an explanatory view showing an internal state, and (b) is a cross-sectional explanatory view of a main part AA of (a).

An embodiment of the parts supply device according to the present invention will be described with reference to FIGS. 1 to 4. The component supply device 1 of the present invention has a suspending member 5 capable of receiving a screw N, which is an example of a rod-shaped component with a head that is vibrated and transported from upstream to downstream, and the suspending member 5 is transported by the screw N. A linear drive unit 10 that can move in a direction orthogonal to the direction, a backup member 20 that is arranged in parallel with a predetermined gap in the height direction from a hanging member 5 that moves in the orthogonal direction, and the hanging member. A push-up means 30 that pushes up a screw N suspended from 5 and moved in the orthogonal direction from below to above and presses the head of the screw N against the lower surface of the backup member 20, and a push-up means 30 that is fixed to the push-up means 30 and bends downward. It includes a measuring means 35 that measures the amount of deflection and outputs it to the outside, and a control means 50 that inputs the measured value of the measuring means 35 and compares it with a preset value to determine the quality of the total length of the screw N. ..

The hanging member 5 is configured to sequentially receive the screw N from two vibrating rails L located upstream and vibrate, and forms a plate shape set to a width larger than the head diameter of the screw N. .. Further, the hanging member 5 is provided with a U-shaped groove at the tip thereof that freely suspends the screw N and guides the screw N from the front, and is provided with a columnar guide shaft protruding downward from the lower surface of the rear end portion. .. Further, the hanging member 5 is arranged so as to be located inside the frame F described later.

The frame F is configured so that the tip end portion of the vibration rail L can be partially inserted and arranged, and is provided with a multi-stage notch extending in a direction orthogonal to the vibration rail L. Further, the frame F is provided with an engaging groove Fa that engages with the guide shaft of the hanging member 5 on the upper surface of the high step F1 of the cutout portion, and the hanging member 5 is formed by the engaging groove Fa. By following the above, the screw N can be moved in the orthogonal direction and at the same time in the transport direction of the screw N. On the other hand, in the lower step F2 of the notch portion, a sliding hole Fd1 capable of sliding the screw N downward and an inspection hole Fd2 through which the inspection rod 33 provided in parallel with the sliding hole Fd1 can be inserted are arranged. It is installed.

The linear drive unit 10 includes cylinders 15a and 15b arranged so as to face both ends of the frame F, a slide block 11 arranged on the lower stage F2 of the frame F and slidable, and the slide block 11. It is composed of a hanging member 5 and a sliding lid 12 arranged so as to cover the engaging groove Fa. Further, the cylinder 15a is always connected to one end of the slide block 11, and the slide block 11 is configured to be movable in the orthogonal direction.

The slide block 11 is formed by arranging the hanging member 5 on the upper surface thereof, and is provided with a through notch hole 11a penetrating in the height direction thereof. As shown in FIGS. 4A and 4B, the communication notch hole 11a has a hole shape that partially cuts out the end face of the slide block 11, and the width of the notch is the leg portion of the screw N. While the size is set to be slightly larger than the diameter, the hole diameter is set to a size that allows the screw N to slide downward and pass through.

The sliding lid 12 includes a guide groove that guides the hanging member 5 that moves in the transport direction along the engaging groove Fa, and has a high step F1 of the slide block 11 that forms the mounting surface. The dimensions are set so that the lower surface of the sliding lid 12 is substantially the same height.

Further, the cylinder 15a and the cylinder 15b are set to different cylinder diameters, and the cylinder diameter of the cylinder 15a is set to be smaller than that of the cylinder 15b. Therefore, if the cylinders 15a and 15b are not operating, the slide block 11 is located on the rightmost side as shown in FIGS. 1A and 1B, and is located in the U-shaped groove of the suspension member 5. It is located at a receiving position where the screw N is received from the vibration rail L. Further, when the cylinder 15a and the cylinder 15b are operated, the slide block 11 has a large cylinder diameter as shown in FIGS. 2A, 2B or 3A, 3B. It is pushed by the cylinder 15b and is located at an inspection position where the through cutout hole 11a and the inspection hole Fd2 communicate with each other. Further, when only the cylinder 15a operates, the slide block 11 is moved to the leftmost side as shown in FIGS. 4A and 4B, and the through cutout hole 11a and the sliding hole Fd1 communicate with each other. Located in position. That is, the slide block 11 is positioned at any of the receiving position, the inspection position, and the discharging position by the operation of the cylinders 15a and 15b.

The backup member 20 is screwed to the uppermost surface of the frame F, and is arranged with a slight gap from the upper surface of the sliding lid 12. Further, the backup member 20 regulates the crown surface of the screw N when the screw N suspended from the hanging member 5 is pushed upward by the push-up means 30 described later at the above-mentioned inspection position.

The pushing-up means 30 is fixed to the frame F and can move up and down in the vertical direction, an elevating cylinder 31 that is attached to the elevating cylinder 31 and can be elevated and lowered, and an elevating cylinder 32 that is erected at all times. It is composed of an inspection rod 33 arranged in the inspection hole Fd2. The inspection rod 33 is provided with a bottomed hole 33a at the tip thereof that abuts on the end surface of the leg portion of the screw N, and the bottomed hole 33a is configured to guide the outer periphery of the leg portion of the screw N. ..

The measuring means 35 is a contact type sensor that bends in the vertical direction and outputs the amount of the bending to the outside, and is attached to the elevating plate 32. Further, the contact type sensor is provided with a contactor 35a at its tip that moves in a contracting direction when it comes into contact with a member, and the movement amount of the contactor 35a can be output to the control means 50.

The control means 50 is configured by connecting the cylinders 15a and 15b and the elevating cylinder 31, and is preset with an operation command unit that sends an operation command to each of these cylinders and a measured value output from the contact sensor. It is provided with a determination unit for comparing with the set value and determining whether the measured value is within the range of the set value for normal determination, and for out of the range, determining an abnormality.

As shown in FIG. 1A, the component supply device 1 configured in this way positions the hanging member 5 at the receiving position and receives one screw N discharged from the vibration rail L. The head of the screw N is supported by the upper surface of the hanging member 5.

Next, the cylinder 15a and the cylinder 15b are operated based on the operation signal emitted from the control means 50, and the slide block 11 slides toward the inspection position integrally with the rod 15a1 of the cylinder 15a. , The rod 15b2 of the cylinder 15b comes into contact with the end surface of the slide block 11. As a result, the slide block 11 is pressed by the cylinders 15a and 15b, respectively, as shown in FIGS. 2A and 2B, and stays at the inspection position. Further, in the process of moving the slide block 11 from the receiving position to the inspection position in this way, the hanging member 5 gradually moves toward the elevating cylinder 31 side along the engaging groove Fa, and the screw N Is moved substantially on the axis of the through notch hole 11a.

Subsequently, the control means 50 emits a return signal to the elevating cylinder 31, so that the elevating plate 32 attached to the elevating cylinder 31 rises in the direction of the arrow in FIG. 3B, and the bottom of the inspection rod 33 is bottomed. The tip of the screw N comes into contact with the hole 33a, and the head bearing surface of the screw N rises from the upper surface of the hanging member 5. Further, since the top surface of the screw N that has risen upward abuts on the lower surface of the backup member 20, the screw N can be pushed up without being pushed up above the height shown in FIG. 3 (b). Be regulated.

At this time, the contact type sensor causes the contactor 35a to come into contact with a bolt attached to the lower surface of the frame F and bend a predetermined amount to output a measured value corresponding to the amount of bending to the control means 50. .. The control means 50 temporarily stores the measured value in the inside thereof, determines whether or not the measured value is within the preset range of the set value by the determination unit, and moves up and down from the operation command unit. An operation signal for operating the cylinder 31 is emitted. As a result, the elevating cylinder 31 returns to the original position and lowers the inspection rod 33 to the position shown in FIG. 2B.

Next, since the control means 50 sends a return signal to the cylinder 15b, the rod 15a1 which has been extended to the inspection position with an extra stroke so far starts to extend again. As a result, the slide block 11 starts sliding again from the inspection position to the discharge position.

In this way, in the process of moving the slide block 11 from the inspection position to the discharge position, the suspension member 5 moves along the engagement groove Fa so as to be further pulled toward the elevating cylinder 31 side. The engagement with the screw N suspended so far is released, and the screw N is slid down into the through notch hole 11a. The determination result of the determination unit is displayed on a display (not shown) or the like, and is adopted as a quality result of the overall length dimension of the screw N that has been slid down and discharged.

After that, the control means 50 sends a return signal to the cylinder 15a and controls the slide block 11 to return to the receiving position shown in FIGS. 1A and 1B.

As described above, in the process of supplying the screw N to the next process, the component supply device 1 according to the present invention measures the entire length of the screw N directly by a contact sensor instead of a conventional photoelectric sensor or the like. There is an advantage that it is hard to malfunction even in an environment where dust is generated. Further, the component supply device 1 according to the present invention cannot measure the total length of the screw N to be inspected because the screw N to be inspected is once separated from the hanging member 5 by the pushing-up means 30 and pressed against the backup member 20 to measure the total length thereof. There is also an advantage that the total length of the screw N including the head can be measured, and different products having different head heights can be detected.

1 ... Parts supply device 5 ... Suspended member 10 ... Linear drive unit 11 ... Slide block 11a ... Through notch hole 12 ... Sliding lid 15a ... Cylinder 15b ... Cylinder 20 ... Backup member 30 ... Pushing means 31 ... Lifting cylinder 33 ... Inspection rod 35 ... Measuring means 50 ... Control means N ... Screw

Claims (3)

A hanging member that suspends and supports the rod-shaped part with a head, a pushing means for pushing up the rod-shaped part with a head suspended from the hanging member from below to above, and a pushing means that is fixed above the hanging member and pushed up by the pushing means. A backup member that regulates the headed rod-shaped part so that it cannot be pushed up above a predetermined height, and a measuring means that measures and outputs a dimension corresponding to the total length of the headed rod-shaped part regulated by this backup member. It is provided with a control means for determining the quality of the total length of the rod-shaped part with a head by comparing the measured value of the measuring means with the set value set in advance.
The component supply device, wherein the measuring means is a contact type sensor attached to the pushing-up means. The hanging member is provided with a U-shaped groove for guiding and receiving a headed rod-shaped part supplied from the previous process, a receiving position for receiving the headed rod-shaped part from the previous process, and a head suspended in the U-shaped groove. The inspection position where the rod-shaped part is measured by the measuring means, and the discharge position where the receiving position and the inspection position are passed in order, and then the hanging state of the rod-shaped part with a head is released from the U-shaped groove and the rod-shaped part is slid downward and discharged. The component supply device according to claim 1, wherein the component supply device is configured to move in the horizontal direction together with a slide block that slides and moves in order. The push-up means includes an inspection rod that abuts on the tip of the leg of the rod-shaped part with a head located at the inspection position and guides the outer circumference of the leg, and the rod-shaped part with a head is shafted by the backup member and the inspection rod. The component supply device according to claim 2, wherein the component supply device is configured to be pressed in a direction and measured by the measuring means.

Images