JP6451994B2 - Extrusion-type component supply device and supply method - Google Patents

Description

  The present invention relates to an extrusion-type component supply device and a supply method of a type in which a component that has entered a temporary fixing chamber is temporarily locked and this component is supplied to a target location with an extrusion rod.

  In Japanese Patent No. 4207168, a bolt is held on a holding head provided at the tip of an advancing and retracting supply rod, and the bolt is pushed out when the holding head is advanced and the bolt tip slightly enters the receiving hole. Is pushed out and the bolt is inserted to the back of the receiving hole.

Japanese Patent No. 4207168

  In the technique described in the above-mentioned patent document, since the holding head is attached to the tip of the advance / retreat type supply rod, if the misalignment occurs in the advance / retreat axis of the supply rod for some reason, the relative position between the bolt and the receiving hole is changed. There is a problem that the bolt does not enter the receiving hole. Further, since the bolt is not guided by a stationary wall surface or the like, if the bolt is inclined when the bolt is pushed out by the pushing member, the bolt will not enter the receiving hole.

  The present invention is provided in order to solve the above-described problems. The components temporarily locked in the temporary fixing chamber are not displaced, and the concave shape portion such as a recess or an insertion hole is formed. The purpose is to accurately insert and to easily remove the inserted parts after insertion.

The invention according to claim 1 is an extrusion-type component supply device,
A temporary stop chamber is formed to temporarily lock the component on the supply head,
It is of a type in which the part stopped in the temporary holding chamber is pushed out by an advancing / retracting type extrusion rod and entered into the concave shape part of the counterpart part which is the target part,
The tip of the advancing / retracting passive rod protruding through the concave portion is configured to stand by in the vicinity of the pushing direction side of the part temporarily locked in the temporary fixing chamber,
The part is inserted between the tip of the push rod and the tip of the passive rod by the advancement of the push rod, and the part is inserted into the concave part with the center axis of the part and the concave part matched. And
Braking means configured to maintain the stop position of the passive rod without causing a return reaction force to the passive rod when the passive rod retracts through the part and the advancement of the extrusion rod stops is provided,
The braking means is provided with a braking member for applying a braking force to the passive rod.

  When the push rod advances into the part that has entered the temporary fixing chamber and is temporarily locked at a predetermined position, the part is pushed out of the temporary fixing chamber at its tip. By this extrusion, the component is pressed against the standby passive rod, and the component is sandwiched between the distal end portion of the extrusion rod and the distal end portion of the passive rod.

  Since the passive rod passes through the concave part, the center axis of the passive rod and the central axis of the concave part can be accurately matched, and at the same time, the central axis of the part temporarily locked in the temporary holding chamber By aligning with the center axis of the concave part, the center axis of the part sandwiched between the push rod and the passive rod matches the center axis of the concave part, and the part moves in this sandwiched state. Thus, the component is accurately inserted into a concave portion such as a recess or an insertion hole. As mentioned above, the center axis of each part matches and the part is sandwiched, so that the center axis of the part can be prevented from deviating from the center axis of the push rod or passive rod, and accurate insertion is possible. Operation is ensured.

  At the time of the insertion, only the push rod is driven to advance, the passive rod is passively retracted through the parts, and the braking means operates so that no return reaction force is generated in the passive rod. In the braking means, since the braking force is applied to the passive rod by the braking member, the passive rod also stops in a state where the component is sandwiched at the position where the advancement of the push rod stops. For this reason, when the counterpart part with the part inserted is moved to the next process, the entry length of the passive rod into the counterpart part, that is, into the concave shape portion is shortened, so that the counterpart part is detached from the passive rod. It becomes easy to move, and the machining assembly process and the like are simplified.

Invention of Claim 2 is an extrusion-type component supply method,
A temporary stop chamber is formed to temporarily lock the component on the supply head,
It is of a type in which the part stopped in the temporary holding chamber is pushed out by an advancing / retracting type extrusion rod and entered into the concave shape part of the counterpart part which is the target part,
The distal end of the advancing / retracting passive rod that protrudes through the concave portion is made to wait in the vicinity of the pushing direction side of the part temporarily locked in the temporary fixing chamber,
With the advancement of the extrusion rod, the component is sandwiched between the tip of the extrusion rod and the tip of the passive rod, and the component is inserted into the concave portion with the center axis of the component and the concave portion matched.
When the passive rod retreats through the part and the advancement of the push rod stops, the passive rod is provided without a return reaction force on the passive rod by the braking means provided with a braking member that applies a braking force to the passive rod. It is characterized by maintaining the stop position.

  The effect of the method invention is the same as the effect of the apparatus invention.

It is sectional drawing of the whole apparatus. It is sectional drawing which shows the order of insertion operation | movement. It is sectional drawing which shows the example of a braking means. It is sectional drawing which shows the example of another braking means. It is sectional drawing which shows the example of another braking means. It is sectional drawing of the apparatus in a hollow component.

  Next, an embodiment for carrying out the extrusion-type component supply device and supply method of the present invention will be described.

  1 to 6 show an embodiment of the present invention.

  First, the parts to be supplied will be described.

  There are various parts to be supplied, such as a shaft part, a hollow part, and a square part. In this embodiment, it is a shaft-like component.

  The component 1 is composed of a shaft portion 2 having a circular cross section and a large diameter portion 3 having a circular cross section formed at an end thereof, and is made of iron. As for the dimensions of each part, the total length and diameter of the shaft part 2 are 13 mm and 6 mm, respectively, and the diameter and thickness of the large diameter part 3 are 14 mm and 5 mm, respectively.

  Next, the push-out type component supply apparatus will be described as a whole.

  A feed passage 5 is formed in a metal passage member 4 fixed to a stationary member 30 such as a machine frame of the apparatus, and a temporary holding chamber 6 for temporarily locking the component 1 is formed at the terminal position. Thus, the temporary stop chamber 6 is provided at the end portion of the passage member 4, and this portion is the supply head 7. The component 1 temporarily locked in the temporary fixing chamber 6 is pushed out of the temporary fixing chamber 6 and enters the target location. This target location is a receiving hole 9 formed in the counterpart component 8.

  The part is inserted into the concave part, and as a specific form of the concave part, it is a straight receiving hole 9 having a circular cross section, or although not shown, it is a recess into which the part is fitted. .

  Next, the feeding passage will be described.

  A supply hose 10 made of a synthetic resin such as urethane resin is connected to the passage member 4. The component 1 is fed from the parts feeder (not shown) through the supply hose 10 to the passage member 4. A supply passage 11 having the same cross-sectional shape as the supply passage 5 formed in the passage member 4 is provided in the supply hose 10. The feeding passage 11 and the feeding passage 5 communicate smoothly. The feeding passages 11 and 5 are constituted by a widened portion 12 through which the large-diameter portion 3 passes and a narrow-width portion 13 through which the shaft portion 2 passes, and the sliding is supported in a state where the lower surface of the large-diameter portion 3 can slide. A surface 14 is provided. As shown in FIG. 1B, the left and right sliding surfaces 14 and 14 are arranged in a parallel state extending in a direction perpendicular to the paper surface, and the lower surface of the large-diameter portion 3 of the component 1 is placed on the sliding surface 14. It slides and is transported in a so-called neck hanging state.

  In order to allow the component 1 to move in the feed passages 11 and 5, the feed passages 11 and 5 are inclined to slide down, or the feed passages 11 and 5 are fed straightly with feed vibration. It can be in the form of a feeder.

  Next, the supply head will be described.

  The temporary fixing chamber 6 disposed at the end portion of the feeding passage 5 temporarily locks the component 1 fed in a suspended state in the same posture. The component 1 is pushed out in a direction perpendicular to the feeding direction of the feeding passage 5, and an outlet opening 15 is provided for this purpose.

  A guide surface 16 is provided at the end of the component 1 in the traveling direction in order to perform the function of stopping the component 1 and the function of guiding the extrusion. The guide surface 16 receives the large diameter part 3. The guide surface 16 has a semicircular arc shape that exactly matches the outer peripheral surface of the large diameter portion 3. And the lower part of the guide surface 16 is open | released like the exit opening 15 below.

  In order to bring the large-diameter portion 3 into close contact with the guide surface 16, suction means is arranged. Various structures such as a magnet type and an air suction type can be adopted as a specific structure of the suction means. Here, the former is a magnet type. The large diameter portion 3 is in close contact with the guide surface 16 by the attractive force of the permanent magnet 17 embedded from the end side of the passage member 4. In FIG. 1A, in order to attract the component 1 obliquely upward, the permanent magnet 17 is arranged close to the upper side of the large diameter portion 3 so that the attractive force of the permanent magnet 17 acts obliquely upward. It has become. Therefore, in the component 1 that is sucked and stopped, the upper surface of the large-diameter portion 3 is in close contact with the ceiling surface 18 of the widened portion 12. Since the cylindrical outer peripheral surface of the component 1 is in close contact with the guide surface 16 and the upper surface of the large-diameter portion 3 is in close contact with the ceiling surface 18, the temporary locking position of the component 1 is always fixed at a fixed location. Yes.

  In this embodiment, the feeding direction of the feeding passage 5 is the horizontal direction, and the component 1 is fed in a state where its central axis is directed in the vertical direction. And the component 1 temporarily latched by the temporary fixing chamber 6 is also made into the attitude | position of a perpendicular direction. Extruding means 20 for extruding the component 1 in the vertical direction is provided. As the pushing means 20, various types such as an air cylinder type and an advancing / retracting output type electric motor can be adopted. Here, it is an air cylinder type. An air cylinder 21 is fixed to the upper surface of the passage member 4, and its piston rod 22 penetrates the through hole 23 opened in the passage member 4 and protrudes into the temporary fixing chamber 16. The piston rod 22 is an extruded rod, and the extruded rod is also denoted by reference numeral 22.

  Next, the arrangement of the counterpart component will be described.

  On the other hand, a receiving hole 9 opened in the counterpart component 8 is a target location for component supply. As the shape of the target location, it is a circular straight hole such as the receiving hole 9 or a square depression, and therefore is comprehensively expressed as a “concave portion” as described above. The receiving hole 9 is arranged in the vertical direction. The extrusion rod 22, the shaft-shaped component 1, the receiving hole 9, and a passive rod described later are arranged on the central axis OO, and the direction of the central axis OO is in the vertical direction. In this state, the component 1 (shaft part 2) and the receiving hole 9 which is a concave-shaped part are arrange | positioned on the straight line in the extrusion direction.

  The counterpart component 8 is fitted in the receiving recess 25 of the support member 24 fixed to the stationary member 30. The depth of the receiving recess 25 is set to be shallow enough to prevent the movement of the counterpart part 8, the lower part of the counterpart part 8 is fitted snugly, and the central axis of the receiving hole 9 matches the central axis OO. It is like that.

  Next, the passive rod will be described.

  The passive rod 27 formed of a shaft-shaped member having a circular cross section is arranged in the vertical direction and is coaxial with the receiving hole 9 and protrudes upward from the receiving hole 9. And the front-end | tip part of the passive rod 27 is located near the extrusion direction side of the axial part 2. As shown in FIG. That is, the tip of the passive rod 27 protruding through the receiving hole 9 stands by in the vicinity of the part 1 that is temporarily locked in the temporary fixing chamber 6 in the pushing direction.

  This “neighboring” means a state in which the lower end surface of the shaft portion 2 immediately hits the upper end surface of the passive rod 27 as soon as the extrusion rod 22 starts to advance and begins to extrude the part 1. From another viewpoint, “near” means that the tip of the passive rod 27 is located in a space close to the outlet opening 15. From another viewpoint, “near” means that when the component 1 is pushed out, the tip of the passive rod 27 is in a standby state within the stroke range during which the component 1 is guided while rubbing the guide surface 16. It means that Since the tip of the passive rod 27 stands by in such a guided section, the position deviation from the central axis OO due to the inclination of the component 1 at least until the component 1 hits the passive rod 27. Is prevented, and the insertion accuracy of the component 1 into the receiving hole 9 is improved.

  The passive rod 27 is an advancing / retracting operation type, passes through the center portion of the support member 24, and advances / retreats in the receiving hole 9.

  Next, the braking means will be described.

  The passive rod 27 passing through the receiving hole 9 is formed integrally with the passive rod 27 on the lower side of the passive rod 27 that receives the braking force. The braking portion 28 is composed of a shaft member having a diameter larger than that of the passive rod 27 and is supported by the stationary member 30 so as to advance and retract. For this reason, a support hole 29 is formed in the stationary member 30, and the braking portion 28 inserted into the support hole 29 is an advancing and retracting type.

  The braking means 31 is configured to maintain the stop position of the passive rod 27 without causing a return reaction force to the passive rod 27, and is schematically shown by a two-dot chain line in FIGS. 31 is attached.

  The braking means 31 applies a braking force to the braking unit 28, and various types can be adopted.

  The example of the braking means 31 shown in FIG. 3 is a type using a pressure spring, and the braking portion 28 penetrates the through-hole 33 of the braking body 32 made of a block-like member fixed to the stationary member 30. Then, a holding pad 35 and a pressure spring 36 which are braking members are accommodated in an accommodation hole 34 provided in the brake main body 32, and a sealing bolt 37 is screwed into the accommodation hole 34. As the pressing pad, a synthetic resin excellent in wear resistance, for example, polytetrafluoroethylene (trade name: Teflon) is pressed against the braking portion 28 as a pressing piece. By such a braking structure, the passive rod 27 pushed down maintains its stop position without causing a return reaction force.

  The example of the braking means 31 shown in FIG. 4 is a type using a pressure rubber as a braking member, and the pressing rubber 38 elastically presses the braking portion 28 from the left and right of the braking portion 28.

  The example of the braking means 31 shown in FIG. 5 is a type using a permanent magnet as a braking member, and the attraction force of the permanent magnet 39 acts on the braking portion 28 so that the braking portion 28 is the inner surface of the through-hole 33. To be attracted to. In the example of FIG. 5, the braking portion 28 is made of iron that is a magnetic material.

  Next, the return mechanism of the passive rod will be described.

  The passive rod 27 pushed down together with the braking portion 28 by the advancement of the push rod 22 needs to be re-entered into the receiving hole 9 of the next counterpart part 8 after taking out the counterpart part 8. Therefore, as shown in FIG. 1, the passive rod 27 is pushed back by the return means 41. As the return means 41, various mechanisms such as an air cylinder and an electromagnetic solenoid can be adopted, but here, it is an air cylinder. The air cylinder is also denoted by reference numeral 41 and is fixed to the stationary member 30, and the piston rod 42 advances and retreats in the vertical direction. A push piece 43 is fixed to the tip of the piston rod 42.

  The component 1 is transferred at high speed by air injection or the like. This is temporarily stopped and transferred to the temporary fixing chamber 6 at a low speed. For this purpose, the stopper member 48 enters the feed passage 5 to temporarily stop the component 1. The stopper member 48 is advanced and retracted by an air cylinder 49 attached to the upper surface of the passage member 4. Here, the piston rod itself of the air cylinder 49 is the stopper member 48.

  Next, the operation of the apparatus will be described.

  FIG. 1 shows a state in which the component 1 is attracted to the permanent magnet 17 in the temporary fixing chamber 6 and the large diameter portion 3 is positioned in close contact with the guide surface 16. At this time, the shaft portion 2 is coaxial with the receiving hole 9 and coaxial with the central axis OO. The push rod 22 is in the most retracted position, while the passive rod 27 passes through the receiving hole 9 and its tip is located near the tip of the shaft 2.

  Here, when the push rod 22 advances by the air cylinder 21, the lower end surface of the push rod 22 hits the upper surface of the large diameter portion 2 of the component 1, and the component 1 is pushed out along the guide surface 16. By this operation, the lower end surface of the shaft portion 2 comes into contact with the upper end surface of the passive rod 27, the component 1 is sandwiched between the extrusion rod 22 and the passive rod 27, and the shaft portion 2, the receiving hole 9, and the passive rod 27 are centered on the axis O−. Align on O.

  When the extrusion rod 22 subsequently advances, the component 1 is sandwiched between the rods 22 and 27, and the shaft portion 2 enters the receiving hole 9 as shown in FIG. When the component 1 is sandwiched and moved as described above, the braking operation of the braking means 31 brakes the backward movement of the passive rod 27, and no return reaction force is generated in the passive rod 27. That is, the passive rod 27 is passively pushed down by the push rod 22 through the component 1, and the sandwiched state of the component 1 continues.

  In other words, the pushing down force of the push rod 22 is set to a value that overcomes the braking force applied to the passive rod 27 by the pressing pad 35, the pressing rubber 38, the permanent magnet 39, etc. Then, the passive rod 27 is retracted.

  Further, when the extrusion rod 22 advances and the shaft portion 2 enters the receiving hole 9 as shown in FIG. 2B, the large diameter portion 3 hits the upper surface of the counterpart component 8, and the advancement of the extrusion rod 22 stops. To do. When the advancement of the push rod 22 stops, the braking members 35, 38, 39 and the like act on the passive rod 27 (braking portion 28), and the return reaction force of the passive rod 27 is not generated in the passive rod 27. Maintain the stop position.

  Next, as shown in FIG. 2C, when the push rod 22 is returned to the original position by the air cylinder 21, the counterpart component 8 with the component 1 inserted is taken out from the support member 24. This extraction may be performed manually by the operator, but it is desirable to extract with the robot device 44 as indicated by a two-dot chain line.

  Thereafter, a new counterpart component 8 is set on the support member 24, and subsequently the passive rod 27 advances, stops near the next component 1 in the temporary fixing chamber 6, and is in the initial state shown in FIG. Return to.

  Next, the case of different parts will be described.

  As described above, there are various parts to be supplied, such as a shaft part, a hollow part, and a square part. The component shown in FIG. 6 is a hollow component 45 made of iron having a circular cross section.

  Since it is hollow, a guide pin 46 that enters the hollow portion of the component 45 is provided at the distal end portion of the extrusion rod 22, and a guide that relatively enters the hollow portion of the component 45 also at the distal end portion of the passive rod 27. Pins 47 are provided. The rest of the configuration is the same as that of FIG. 1 including the parts not shown, and the same reference numerals are given to members having similar functions. The operation is the same as that described above.

  It should be noted that an electric motor that performs forward / backward output can be employed instead of the various air cylinders. It is also possible to replace the various permanent magnets with electromagnets.

  The above-described advance / retreat operation of the push rod 22 and the stopper member 48 and the operation of the air cylinder (return means) 41 can be easily performed by a generally adopted control method. A predetermined operation can be ensured by combining an air switching valve that operates with a signal from the control device or the sequence circuit, a sensor that emits a signal at a predetermined position of the air cylinder, and transmits the signal to the control device.

  The operational effects of the embodiment described above are as follows.

  When the push rod 22 advances into the part 1 that has entered the temporary fixing chamber 6 and is temporarily locked at a predetermined position, the part 1 is pushed out of the temporary fixing chamber 6 at its tip. By this extrusion, the component 1 is pressed against the standby passive rod 27, and the component 1 is sandwiched between the distal end portion of the extrusion rod 22 and the distal end portion of the passive rod 27.

  Since the passive rod 27 penetrates the inside of the receiving hole 9 which is a concave shape portion, the center axis OO of the passive rod 27 and the center axis OO of the receiving hole 9 can be accurately matched, and at the same time The center axis OO of the part 1 temporarily locked in the temporary fixing chamber 6 is made to coincide with the center axis OO of the receiving hole 9, thereby being sandwiched between the push rod 22 and the passive rod 27. The center axis of the part 1 coincides with the center axis OO of the receiving hole 9, and the part 1 moves in the sandwiched state, so that the part 1 is accurately inserted into the receiving hole 9. As described above, since the center axis OO of each part matches and the part 1 is sandwiched, the center axis OO of the part 1 is the center axis OO of the push rod 22 or the passive rod 27. It is possible to prevent deviation from O, and an accurate insertion operation is ensured.

  At the time of the insertion, only the push rod 22 is driven forward, and the passive rod 27 is passively retracted via the component 1 and operates so that no return reaction force is generated on the passive rod 27 by the braking means 31. In the braking means 31, since the braking force is applied to the passive rod 27 by the braking members 35, 38, 39, the passive rod 27 also stops in a state where the component 1 is sandwiched at the position where the advancement of the push rod 22 has stopped. . For this reason, when the counterpart part 8 in which the part 1 is inserted is moved to the next step, the entry length of the passive rod 27 into the counterpart part 8, that is, the receiving hole 9 is shortened. It becomes easy to move away from the passive rod 27, and the machining assembly process and the like are simplified.

  The support member 24 is provided with a shallow receiving recess 25 in which the counterpart part 8 is fitted, and the passive rod 27 is stopped at the depressed position, so that the counterpart part into which the part 1 is inserted is provided. When removing 8, the operator can easily remove it. In addition, automation using the robot apparatus 44 is facilitated.

  The effect of the supply method is the same as the effect of the supply device.

  As described above, according to the present invention, the part temporarily locked in the temporary fixing chamber is placed in a state where no positional deviation occurs, and is accurately inserted into the concave shape part such as the depression or the insertion hole, and after the insertion. It is possible to easily remove the inserted parts. Therefore, it can be used in a wide range of industrial fields, such as an automobile body assembly process and a home appliance sheet metal assembly process.

DESCRIPTION OF SYMBOLS 1 Parts 2 Shaft part 3 Large diameter part 6 Temporary stop chamber 8 Counterpart part 9 Receiving hole, concave shape part 22 Extrusion rod 27 Passive rod 31 Brake means 35 Press pad, brake member 38 Press rubber, brake member 39 Permanent magnet, brake member 45 Hollow part 46 Guide pin 47 Guide pin OO Center axis

Claims (2)

A temporary stop chamber is formed to temporarily lock the component on the supply head,
It is of a type in which the part stopped in the temporary holding chamber is pushed out by an advancing / retracting type extrusion rod and entered into the concave shape part of the counterpart part which is the target part,
The tip of the advancing / retracting passive rod protruding through the concave portion is configured to stand by in the vicinity of the pushing direction side of the part temporarily locked in the temporary fixing chamber,
The part is inserted between the tip of the push rod and the tip of the passive rod by the advancement of the push rod, and the part is inserted into the concave part with the center axis of the part and the concave part matched. And
Braking means configured to maintain the stop position of the passive rod without causing a return reaction force to the passive rod when the passive rod retracts through the part and the advancement of the extrusion rod stops is provided,
An extrusion-type component supply device, wherein the braking means is provided with a braking member for applying a braking force to the passive rod. A temporary stop chamber is formed to temporarily lock the component on the supply head,
It is of a type in which the part stopped in the temporary holding chamber is pushed out by an advancing / retracting type extrusion rod and entered into the concave shape part of the counterpart part which is the target part,
The distal end of the advancing / retracting passive rod that protrudes through the concave portion is made to wait in the vicinity of the pushing direction side of the part temporarily locked in the temporary fixing chamber,
With the advancement of the extrusion rod, the component is sandwiched between the tip of the extrusion rod and the tip of the passive rod, and the component is inserted into the concave portion with the center axis of the component and the concave portion matched.
When the passive rod retreats through the part and the advancement of the push rod stops, the passive rod is provided without a return reaction force on the passive rod by the braking means provided with a braking member that applies a braking force to the passive rod. An extrusion-type component supply method characterized by maintaining the stop position of

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