JP3963876B2 - Endless ring setting device and endless ring setting method - Google Patents

Description

  The present invention relates to the setting of an endless ring to a jig used when performing a process such as quenching while keeping the endless ring in a substantially perfect circle shape. The present invention relates to an endless ring setting device and an endless ring setting method that can be set at a correct position without attaching.

  Metal endless rings are used as power transmission belts for continuously variable transmissions in automobiles and motorcycles. After manufacturing such an endless ring, it is necessary to keep a specific shape (usually a substantially perfect circle) in order to prevent scratches and dents due to swinging and vibration and to quench a plurality of workpieces at once. However, since the endless ring has a small thickness and a narrow width, it is difficult to perform quenching or the like while maintaining a substantially perfect circle shape. In particular, in the case of an endless ring having a large entire circumference, it can be freely deformed and is more difficult to handle.

Patent Document 1 discloses a method and apparatus for mounting an endless ring in a substantially elliptical shape to a jig composed of two rollers in order to correct the circumference of the endless ring.
Patent Document 1: Japanese Patent Laid-Open No. 2002-160032 (Summary. FIG. 3)

  If the device disclosed in Patent Document 1 is diverted to keep the endless ring in a substantially perfect circle, it will not become a perfect circle unless a large number of clamp members are provided. Therefore, there are problems such as an increase in the size of the device and a possibility that the endless ring is damaged due to a large number of clamp members.

  For those that require precision, such as a power transmission belt for a continuously variable transmission, it is particularly necessary to avoid scratches and dents.

  Therefore, there is a need for a method and apparatus that can grip an endless ring and set it on a jig in accordance with the shape (substantially perfect circle) of the quenching jig without making scratches or dents.

  An object of the present invention is to provide an endless ring setting device and an endless ring setting method capable of accurately setting the endless ring on a jig while maintaining the endless ring in a substantially circular shape.

  In order to solve the above-mentioned problems, an endless ring setting device according to the present invention includes an endless ring conveying means, a locking means for locking the endless ring conveyed by the conveying means while maintaining a substantially perfect circle, and an endless ring. It comprises gripping / moving means for moving the ring onto a substantially circular jig for quenching or the like while keeping the shape of the ring substantially circular.

  An example of the endless ring conveying means is a conveyor. The locking means includes a first locking member that locks the forward end of the conveyed endless ring in a traveling direction while maintaining a substantially perfect circle, and the endless ring cooperates with the first locking member, It can be considered that the second ring is configured to be locked while keeping the entire ring in a substantially perfect circle.

  The gripping / moving means includes two points on the endless ring that are intersections of a plurality of freely movable guide pins disposed at substantially equal intervals inside a substantially perfect circle endless ring and the center line of the substantially perfect circle. The endless ring is gripped by a pair of gripping claws that are held in a substantially perfect circle, and after moving onto the jig, the guide pin and the gripping claw are released so that the substantially perfect endless ring is placed on the jig. It has a structure set to.

  The gripping / moving means is preferably provided with an endless ring support member for suppressing deflection of the endless ring during movement, and for correcting a deviation between the endless ring and the jig when set on the jig. . Moreover, it is preferable that the jig has a substantially circular cylindrical shape and has a trapezoidal shape in which the upper part of the cylinder is slightly narrower than the lower part of the cylinder.

  The endless ring setting method of the present invention is a method for setting an endless ring in a substantially perfect circle shape and performing a treatment such as quenching, and keeps the endless ring carried by the conveying means in a substantially perfect circle. The endless ring is moved onto a substantially circular jig for the above processing while the endless ring is kept in a substantially perfect circle by the gripping means, and the gripping means is released to reach a substantially perfect endless shape on the jig. It is characterized by setting a ring.

  The gripping means is an intersection of a plurality of guide pins that can be moved forward and backward at substantially equal intervals that extend into the inside of a substantially perfect circle endless ring that remains in the locking member, and a center line of the substantially perfect circle. A pair of gripping claws that grip two points on the endless ring can grip the endless ring while maintaining a substantially perfect circle. Then, after moving the endless ring gripped by the gripping means onto the jig for the processing, the guide pins and the gripping claws are released, and a substantially perfect endless ring is set on the jig. At this time, it is preferable that the endless ring support member suppresses the deflection of the endless ring during the movement, and corrects the deviation of the endless ring and the jig when set on the jig.

  According to the present invention, the endless ring can be accurately set on the jig while keeping the endless ring in a substantially circular shape, and therefore, the endless ring is subjected to a treatment such as quenching without causing scratches or dents. be able to.

  Further, since the gripping can be limited to two places by using many guide pins, there is almost no risk of scratches or dents on the endless ring.

  In addition, the endless ring support member prevents deflection when moving the endless ring and corrects the deviation when set to the jig, and the endless ring can be set more easily by providing a slight taper on the jig. it can.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, the best embodiment of the invention will be described with reference to the drawings. FIG. 1 is a diagram showing an example of an endless ring conveying means according to the present invention, FIG. 2 is a front view showing details of a locking means for an endless ring according to the present invention, and FIG. 3 is an example of a gripping / moving means according to the present invention. FIG.

  The first locking member A waiting on the conveyor 1 has a semicircular arc at the portion where the endless ring W is locked. The size of this circle is substantially the same as the size of the circle when the endless ring W is formed into a perfect circle.

  When the endless ring W is conveyed by the conveyor 1 and locked to the first locking member A waiting on the conveyor 1, the first locking member A corrects the substantially circular shape. At the same time, the conveyor 1 is stopped by a signal from the sensor 2, the second locking member B that has escaped above the conveyor 1 is lowered, and the first locking member A is driven by a drive source 3 such as a cylinder unit. The endless ring W is clamped in a substantially perfect circle shape in cooperation with the first locking member A.

  At this time, the first locking member A and the second locking member B need to be spaced apart from each other so that a gripping claw described later can be inserted, and should be substantially circular as a whole. In this example, a perfect circle having a diameter of 191 mm is formed, and the endless ring W is held in a perfect circle having an outer diameter of 191 mm.

  A gripping device 4 is provided on the conveyor 1 so as to be able to reciprocate in a direction orthogonal to the conveying direction of the conveyor 1. The gripping device 4 is provided with gripping claws 6a and 6b that are opened and closed by a drive source 12 such as a cylinder unit on the lift plate 11, and a support member 7 that is vertically moved by a drive source 13 such as a cylinder unit is attached to the lift plate 11. A guide pin 5 penetrating the support member 7 is supported on the support member 7 via a spring 10.

  Thus, when the endless ring W is held in a substantially perfect circle by the first locking member A and the second locking member B on the conveyor 1, the gripping device 4 waiting on the upper side. The guide pin 5 is inserted inside the endless ring W, and the endless ring W is gripped by the pair of gripping claws 6a and 6b. Further, the endless ring W is firmly supported so as not to be bent by the support member 7 having the same shape as the endless ring W when it becomes a substantially perfect circle.

  FIG. 4 is a plan view showing an example of a gripping state of the endless ring according to the present invention. In this figure, a plurality of guide pins 5 are inserted at substantially equal intervals inside an endless ring W held in a perfect circle shape having an outer diameter of 191 mm and an inner diameter of 183 mm on the conveyor 1. Further, two points on the endless ring W that are intersections with the center line of the perfect circle are gripped from the inner and outer surfaces of the endless ring by the pair of gripping claws 6a and 6b.

  The gripping device 4 that grips the endless ring W is pulled up from the conveyor 1 by the lifting and lowering moving device 8 and moved onto the jig 9 as shown in FIG. In this example, the jig 9 has a flat cylindrical trapezoidal shape with a flange having a height of 17 mm, the uppermost diameter is 183 mm, and the lowermost diameter is 186 mm.

  Then, when the gripping device 4 is lowered to the jig 9 by the lifting and moving device 8 and the guide pin 5 touches the upper surface of the jig 9, the gripping claws 6 a and 6 b are opened and the endless ring W is placed on the jig 9. At this time, the support member 7 also moves down against the spring 10 provided to restrict the operation of the guide pin 5 and presses the endless ring W from above. By the operation of the support member 7, the endless ring W is accurately pushed into the jig 9.

The figure which shows an example of the endless ring conveyance means which concerns on this invention The top view which shows the detail of the latching means of the endless ring which concerns on this invention Side view showing an example of gripping / moving means according to the present invention. The figure which shows an example of the holding state of the endless ring which concerns on this invention

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Conveyor, 2 ... Sensor, 3 ... Drive source, 4 ... Gripping device, 5 ... Guide pin, 6, 6a ... Gripping claw, 7 ... Support member, 8 ... Lifting / moving device, 9 ... Jig, 10 ... Spring, DESCRIPTION OF SYMBOLS 11 ... Elevating plate, 12, 13 ... Drive source, A ... 1st locking member, B ... 2nd locking member, W ... Endless ring.

Claims (7)

An apparatus for setting an endless ring on a jig while maintaining the shape of a perfect circle and performing a quenching process, the apparatus comprising: an endless ring conveying means; and an endless ring conveyed by the conveying means And a gripping / moving means for moving the endless ring onto a perfect circular cylindrical trapezoidal jig for the above processing while keeping the shape of the endless ring in a perfect circle. A device for setting an endless ring.   2. The endless ring setting apparatus according to claim 1, wherein the endless ring conveying means is a conveyor.   2. The endless ring setting device according to claim 1, wherein the locking means includes a first locking member configured to lock the transported endless ring while maintaining a front end of the traveling direction in a perfect circle, and the first locking member. An endless ring setting device comprising: a second locking member that cooperates with the locking member to lock the entire endless ring while maintaining a perfect circle.   The endless ring setting device according to claim 1, wherein the gripping / moving means includes a plurality of guide pins that are disposed at equal intervals inside a perfect circle endless ring and a center line of the perfect circle. The endless ring is gripped by a pair of gripping claws that grip two points on the endless ring that is the intersection, and after moving onto the jig, the guide pin and the gripping claw are released, and the perfect circle An endless ring setting device, wherein the endless ring is set on the jig.   5. The endless ring setting device according to claim 4, wherein the gripping / moving means suppresses deflection of the endless ring during movement, and corrects misalignment between the endless ring and the jig during setting on the jig. An endless ring setting device comprising an endless ring support member.   2. The endless ring setting device according to claim 1, wherein the jig is a perfect circular cylinder, and the upper part of the cylinder has a trapezoidal shape slightly narrower than the lower part of the cylinder. The set device described. A method of setting an endless ring in a perfect circle shape for performing quenching treatment. The endless ring carried by the conveying means is locked while being held in a perfect circle, and the endless ring is turned into a perfect circle by the gripping means. A method of setting an endless ring, wherein the endless ring is moved onto a cylindrical trapezoidal jig for the treatment while being held, the gripping means is opened, and the endless ring is set on the jig.

Images