JP4683344B2 - Axial component holding device - Google Patents

Description

  The present invention relates to a holding device for a shaft-like component in which a locking member that moves forwards and backwards engages a shaft-like component and advances, and the shaft-like component is sandwiched and held between a holding member attached to a stationary member. Yes.

In Japanese Patent No. 2852490, the bolt held on the supply rod is made to reach the target location, and then the bolt is sandwiched between the counterpart member and the supply rod, and the bolt is introduced into the electrode receiving hole in this state. Are known.
Japanese Patent No. 2852490

  Since the prior art as described above is intended to introduce bolts into the receiving holes of the electrodes, the clamped bolts are not firmly fixed. Therefore, there is a problem that it cannot be used when the bolt fixed at a predetermined position is held by the socket of the screw tightener.

  The present invention is provided in order to solve the above-described problems, and at the same time the shaft-like component held by the supply rod reaches the target location, can be firmly sandwiched between the counterpart member. An object is to provide a holding device for a shaft-like component.

Means to solve the problem

  The invention according to claim 1 is a type in which the locking member that moves forward and backward locks the shaft-shaped component to advance, and sandwiches and holds the shaft-shaped component between the holding member attached to the stationary member. A receiving member for receiving a part of the shaft-like component is provided on the surface of the holding member, and a locking recess that is opened in the advancing direction is provided in the locking member, and the width of the locking recess is A shaft that is set to be larger than the width of the receiving member, and configured so that when the locking member advances, the receiving member relatively enters the locking recess to sandwich the shaft-like component. This is a holding device for a shaped part.

The invention's effect

  A receiving member for receiving a part of the shaft-shaped component is provided on the surface of the holding member, and a locking recess is provided in the locking member so as to open in the advance direction, and the width of the locking recess is the receiving member. This setting is such that when the locking member advances by this setting, the receiving member relatively moves into the locking recess and sandwiches the shaft-like component.

  As described above, when the locking member advances, the receiving member relatively enters the locking recess, so that the shaft-like component is firmly sandwiched between the receiving member and the locking member. That is, at the same time that the locking member holding the shaft-shaped component advances and the shaft-shaped component reaches the target location, the shaft-shaped component is sandwiched between the receiving member. Therefore, fixing by pinching is performed simultaneously with the transfer of the shaft-like component, transfer and fixing are established by a simple operation, the structure as the holding device is simplified, and a highly reliable operation can be obtained. Such clamping is established by the fact that the width of the locking recess is set larger than the width of the receiving member, and this point has a structurally advantageous effect as described above.

  For example, when the shaft-shaped part is a bolt with a head, the above-described strong fixing can be performed, so that when the socket of the screw tightener approaches the head while rotating, the head It can be surely matched without making a round with the socket.

  According to a second aspect of the present invention, there is provided a shaft-shaped component holding device according to the first aspect, in which a concave surface having a shape adapted to the outer shape of the shaft-shaped component is formed at the back of the locking recess and the front surface of the receiving member. It is.

  Since the shaft-shaped component is sandwiched between the two concave surfaces, the shaft-shaped component is reliably held.

  The invention according to claim 3 is the holding device for the shaft-like component according to claim 1 or 2, wherein the holding member is provided with a receiving passage portion for allowing the shaft-like component to reach the receiving member.

  Since the shaft-shaped component locked to the locking member passes through the receiving passage portion, the shaft-shaped component reaches the receiving member, and the above-described clamping is performed reliably.

  According to a fourth aspect of the present invention, the relative positions of the locking member and the holding member are set so that the locking member slides on the surface of the holding member when the locking member advances. 4. A holding device for a shaft-like component according to any one of 3 above.

  Since the locking member slides on the surface of the holding member in this way, the positional relationship in which the inner surface of the locking recess and the both concave surfaces formed on the front surface of the receiving member face each other when viewed in the advancing and retreating direction of the locking member. Therefore, the shaft-like component can be held in a posture orthogonal to the advancing / retreating direction of the locking member, and the holding posture can be accurately maintained.

  According to a fifth aspect of the present invention, there is provided the shaft-like component holding device according to any one of the first to fourth aspects, wherein suction means for holding the shaft-like component at a predetermined position of the locking recess is provided. It is.

  Since the suction means is provided in this way, the relative position between the locking member and the shaft-like component is accurately set. By setting the relative position between the locking member and the holding member accurately, the relative position between the shaft-shaped component and the receiving member is finally set accurately, which is effective for improving the operation accuracy of the apparatus. is there.

  Next, the best mode for carrying out the shaft-shaped component holding device of the present invention will be described.

  1 to 3 show a first embodiment.

  First, the shaft-like component will be described.

  There are various types of shaft-like parts. For example, there are bolts and flanged shaft members. In this Example 1, it is the iron volt | bolt 1 shown to FIG. 1 (B). The bolt 1 includes a head 2 that is a hexagonal head member, a shaft portion 3 that is integrally threaded with the head 2, and a circular flange portion 4 that is formed at the boundary between the head 2 and the shaft portion 3. This flange portion 4 is concentric with the shaft portion 3. The dimensions of each part of the bolt 1 are: the diameter of the shaft 3 is 10 mm, the length of the shaft is 27 mm, the height of the head 2 is 10 mm, the radial dimensions of the head 2 are 14 mm and 16 mm, and the diameter of the flange 4 Is 26 mm.

  Next, the entire apparatus will be described.

  FIG. 1 is a side view of the entire apparatus, and FIG. 2 is a perspective view and a plan view of a locking member and a holding member. The entire holding device is indicated by reference numeral 100. The supply rod 5 that advances and retreats substantially in the horizontal direction is moved forward and backward by an air cylinder 6 that is an advancing and retreating drive means that is disposed in a substantially horizontal direction. The advancing / retreating axis is indicated by the symbol OO. A locking member 7 is attached to the distal end portion of the supply rod 5, and the bolt 1 is locked in a state where the shaft portion 3 is suspended in the vertical direction, that is, in a hanging state.

  A supply pipe 9 fixed to a stationary member 8 such as a machine frame is disposed in a direction substantially orthogonal to the advance / retreat axis OO of the supply rod 5 and is disposed above the retracted locking member 7. . One end of the supply pipe 9 is connected to a parts feeder (not shown).

  An outlet opening 13 that opens downward is provided at the other end of the supply pipe 9, and the outlet opening 13 is opened and closed by an opening / closing plate 12. An air cylinder 11 that opens and closes the opening / closing plate 12 is attached to the stationary member 8. When the opening / closing plate 12 is opened, the bolt 1 waiting there falls and is locked to the locking member 7.

  When the supply rod 5 advances, the bolt 1 is sandwiched between the locking member 7 and its counterpart member. This counterpart member is the holding member 20. The holding member 20 is disposed substantially in the advancing direction of the supply rod 5 and is fixed to the stationary member 8.

  Moreover, as shown in FIG. 3, the bolt 1 in the clamped state is held by the socket 22 of the bolt runner 21 and is screwed after being transferred to a predetermined location. For this purpose, the bolt runner 21 is attached to the robot apparatus 23.

  Next, the locking member will be described.

  As shown in FIG. 2A, the locking member 7 is formed with a mounting portion 10 extending in the advancing direction of the supply rod 5, and is open in the advancing direction of the supply rod 5 at the center thereof. A locking recess 18 is provided. Thereby, a pair of protrusions 14 extending in the advancing direction of the supply rod 5 are formed in a parallel state, and the upper surface of the protrusion 14 is a flat receiving surface 16. A concave surface 15 that conforms to the outer shape of the shaft portion 3 is formed at the back of the locking concave portion 18. The concave surface 15 has a circular cross section. Further, a permanent magnet 17 that is an attraction means is embedded in the vicinity of the concave surface 15. In addition, the width | variety of the latching recessed part 18 is shown with the code | symbol W1. The locking member 7 is made by processing a substantially rectangular parallelepiped block material made of stainless steel.

  With such a structure of the locking member 7, the bolt 1 dropped from the outlet opening 13 of the supply pipe 9 has its shaft portion 3 inserted between the projecting portions 14, and the flange portion 4 is received by the receiving surface 16 and suspended from the neck. It becomes a state. And the axial part 3 closely_contact | adheres to the concave surface 15 with the attractive force of the permanent magnet 17, and the relative position of the volt | bolt 1 with respect to the locking member 7 is set.

  Next, the holding member will be described.

  As shown in FIG. 2 (B), the holding member 20 is made by processing a substantially rectangular parallelepiped block-shaped stainless steel material, and a flat surface 24 is formed. The surface 24 is in a positional relationship parallel to the receiving surface 16. A receiving member 25 extending in the advancing direction of the supply rod 5 is formed in the central portion of the surface 24, and a concave surface 26 for receiving the shaft portion 3 is formed on the front surface portion thereof.

  The positional relationship between the lower surface of the locking member 7 and the surface 24 of the holding member 20 is such that when the locking member 7 advances, the lower surface 27 slides on the surface 24 or slightly between the lower surface 27 and the surface 24. It is set so that a simple gap can be made. The illustrated example is the sliding. A receiving passage 28 is provided on the front side of the holding member 20, that is, on the side of the locking member 7. When the bolt 1 is advanced by the supply rod 5, the bolt 1 can pass through the receiving passage portion 27 and reach the concave surface 26. In the structure shown in FIGS. 2 and 3A, the concave surface 26 is formed in the back of the receiving passage portion 28.

  The width of the receiving member 25 is indicated by reference sign W2. The width W2 of the receiving member 25 is set smaller than the width W1 of the holding recess 18 as shown in FIG. By doing so, when the locking member 7 has advanced, the receiving member 25 relatively enters the locking recess 18, and the shaft portion 3 is sandwiched between the concave surfaces 15 and 26. During this approach, the lower surface 27 of the locking member 7 slides on the surface 24 of the holding member 20. The width W3 of the receiving passage portion 28 is set to be slightly larger than the diameter of the shaft portion 3.

  The thickness (height) H1 of the mounting portion 10 in the locking member 7 and the height H2 of the receiving member 25 are set to the same value. As a result, as shown in FIG. 3, the upper surface 19 of the receiving member 25 and the receiving surface 16 of the locking member 7 are on the same plane, and the lower surface of the flange portion 4 is in close contact with both surfaces 19 and 16. Thus, there is an effect that the holding posture of the bolt 1 can be set accurately.

  In FIG. 2B, the concave surface 26 is formed over the entire height of the holding member 20 and the receiving member 25, but in FIG. 3B, the concave surface 26 is formed only at the height of the receiving member 25. Has been. Therefore, a notch 29 is provided at the back of the receiving passage 28.

  Although the aforementioned attraction means is a permanent magnet 17, another type of attraction means is shown in FIG. This is to suck the shaft portion 3 into the concave surface 15 by air vacuum. An air suction port 31 opens in the concave surface 15 and is connected to a suction pump (not shown) via an air hose 32.

  The advancing / retreating direction of the supply rod 5 is substantially horizontal, but it may be advanced / retreated in an inclined direction. When doing so, the holding member 20 is also inclined.

  The operation of the holding device will be described.

  When the bolt 1 dropped from the outlet opening 13 of the supply pipe 9 is locked to the locking member 7 in a suspended state, the supply rod 5 advances. By this advancement, the receiving member 25 relatively enters between the locking recesses 18, and finally the shaft portion 3 is sandwiched between the concave surfaces 15 and 26, and the bolt 1 is fixed with the head 2 exposed. The Thereafter, when the socket 22 matches the head 2 by the operation of the robot device 23, the pressing force of the air cylinder 6 is released, and the bolt 1 is transferred to the screw hole which is the target location and screwed there.

  The relative position between the outlet opening 13 and the locking member 7 is set so that the bolt 1 falling from the outlet opening 13 is accurately received by the locking recess 18 at the position where the locking member 7 is most retracted. Yes. In order to make the attractive force of the permanent magnet 17 act on the bolt 1 more strongly, it is desirable that the locking member 7 is made of stainless steel which is a nonmagnetic material. Further, the permanent magnet 17 can be an electromagnet.

  Instead of the air cylinders 6 and 11 described above, an electric motor or a rack and pinion mechanism that performs forward / backward output can be used.

  The above-mentioned operation is generally used for a control device or a sequence circuit, an air switching valve that sends working air in response to an operation signal from the control device, a sensor that emits a signal at a predetermined position of an air cylinder and transmits the signal to the control device. Can be ensured by the control means.

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

  As described above, when the locking member 7 is advanced, the receiving member 25 relatively enters the locking recess 18, so that the bolt 1 is firmly fixed by the concave surface 26 of the receiving member 25 and the concave surface 15 of the locking member 7. Is sandwiched between. That is, the locking member 7 holding the bolt 1 advances and the bolt 1 reaches the target location, and at the same time, the bolt 1 is sandwiched between the receiving member 25. Accordingly, the bolt 1 is fixed by pinching at the same time as the transfer of the bolt 1, the transfer and the fixation are established by a simple operation, the structure of the holding device 100 is simplified, and a highly reliable operation can be obtained. Such clamping is established by setting the width W1 of the locking recess 18 to be larger than the width W2 of the receiving member 25, and this point brings about a structurally advantageous effect as described above. ing.

  Since the bolt 1 is firmly fixed as described above, when the socket 22 of the bolt runner 21 rotates and approaches the head 2, the head 2 does not rotate with the socket 22 without fail. Can be matched.

  Concave surfaces 15 and 26 having a shape that conforms to the outer shape of the bolt 1 are formed at the back of the locking recess 18 and the front surface of the receiving member 25.

  Since the bolt 1 is sandwiched between the both concave surfaces 15, 26, the bolt 1 is securely held.

  The holding member 20 is provided with a receiving passage portion 28 for allowing the bolt 1 to reach the receiving member 25.

  Since the bolt 1 locked to the locking member 28 passes through the receiving passage portion 28, the bolt 1 reaches the receiving member 25, and the above-described clamping is performed reliably.

  The relative positions of the locking member 7 and the holding member 20 are set so that the lower surface 27 of the locking member 7 slides on the surface 24 of the holding member 20 when the locking member 7 advances.

  Since the lower surface 27 of the locking member 7 slides on the surface 24 of the holding member 20 in this way, the both concave surfaces 15 and 26 formed on the back of the locking recess 18 and the front surface of the receiving member 25 are the locking member. 7, the bolt 1 can be held in a posture orthogonal to the forward and backward direction of the locking member 7, and the holding posture can be accurately maintained.

  Attraction means for holding the bolt 1 at the predetermined position of the locking recess 18, that is, a permanent magnet 17 and an air suction port 31 are provided.

  Since the suction means is provided in this way, the relative position between the locking member 7 and the bolt 1 is set accurately. Then, by accurately setting the relative position between the locking member 7 and the holding member 20, the relative position between the bolt 1 and the receiving member 25 is finally set accurately, which is effective for improving the operation accuracy of the apparatus. Is.

  As described above, according to the present invention, the shaft-shaped component holding device that can firmly hold the shaft-shaped component held by the supply rod between the counterpart member at the same time as reaching the target location. 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.

It is a side view of the whole holding device and a bolt. It is a perspective view and a top view of a locking member and a holding member. It is sectional drawing which shows the state in which the volt | bolt was clamped. It is a side view which shows another suction means.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bolt 2 Head part 3 Shaft part 4 Flange part 5 Supply rod 7 Locking member 8 Stationary member 15 Concave surface 16 Receiving surface 17 Permanent magnet 18 Locking recessed part 20 Holding member 24 Surface 25 Receiving member 26 Concave surface 27 Lower surface 28 Receiving passage part 31 Air suction port W1 Width of locking recess W2 Width of receiving member 100 Holding device

Claims (5)

  A locking member that moves forward and backward locks the shaft-shaped component, advances, and sandwiches and holds the shaft-shaped component between the holding member attached to the stationary member, and the surface of the holding member A receiving member for receiving a part of the shaft-like component is provided, and the engaging member is provided with an engaging recess opened in the advance direction, and the width of the engaging recess is set larger than the width of the receiving member. According to this setting, the shaft-shaped component holding device is configured such that when the locking member advances, the receiving member relatively enters the locking recess to sandwich the shaft-shaped component.   The holding device for a shaft-shaped component according to claim 1, wherein a concave surface having a shape that conforms to an outer shape of the shaft-shaped component is formed in a back portion of the locking recess and a front surface portion of the receiving member.   The shaft-shaped component holding device according to claim 1 or 2, wherein a receiving passage portion for allowing the shaft-shaped component to reach the receiving member is provided in the holding member.   The shaft according to any one of claims 1 to 3, wherein a relative position of the locking member and the holding member is set so that the locking member slides on the surface of the holding member when the locking member advances. -Shaped component holding device.   The shaft-shaped component holding device according to any one of claims 1 to 4, wherein suction means for holding the shaft-shaped component at a predetermined position of the locking recess is provided.

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