JP2005075471A - Feeder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a feeder, intermittently feeding long transported materials at high speed without complicating the feeder. <P>SOLUTION: This feeder includes: a feed chuck 35 provided to come close to and separate from a fixed chuck 45; a reciprocating device 50 for reciprocating the feed chuck 35; and an opening and closing mechanism 60 for performing the opening and closing operation of the feed chuck 35 and the fixed chuck 45. The opening and closing mechanism 60 includes: a cam follower 36 provided on the feed chuck 35; a cam follower 46 provided on the fixed chuck 45; a chuck opening and closing cam 64 having a crest part 65 opening the feed chuck 35 and the fixed chuck 45 when the cam followers 36, 46 are positioned and a valley part 66 closing the same similarly; and an air cylinder 63 for switching the positions of the cam followers 36, 46 by moving the chuck opening and closing cam 64. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a feed device for supplying a ribbon-like long object to be conveyed, and particularly to a device capable of intermittent feeding with a simple configuration.
[0002]
[Prior art]
A feed device for intermittently feeding a long object to be conveyed such as a ribbon is known (see Patent Document 1). In such a feed device, a feeding gripper for feeding the ribbon between the ribbons and a mechanism for holding the ribbon with the fixing gripper so that the ribbon does not move when the feeding gripper finishes feeding and opens and returns. Yes. Therefore, the feeding gripper and the fixing gripper repeatedly open and close alternately to send out the ribbon.
[0003]
[Patent Document 1]
JP 11-342438 A (page 3)
[0004]
[Problems to be solved by the invention]
The above-described feed device for intermittently feeding the object to be conveyed has the following problems. That is, it is necessary to synchronize the opening and closing operations of the feeding gripper and the fixing gripper. However, if the opening and closing operations are individually performed by the air cylinders, it takes time to adjust the operation timing of both air cylinders. Since at least one of the grippers must be closed, it is difficult to switch at high speed.
[0005]
On the other hand, a method is conceivable in which a driving force is obtained from a driving mechanism that operates the entire apparatus, and both grippers are individually opened and closed with a rotating cam to synchronize at high speed. However, if this is done, the ribbon cannot be opened and closed manually when adjusting the ribbon feed amount.
[0006]
Accordingly, an object of the present invention is to provide a feed device that can intermittently feed a long object to be conveyed at high speed without complicating the device.
[0007]
[Means for Solving the Problems]
In order to solve the above problems and achieve the object, the feed apparatus of the present invention is configured as follows.
[0008]
(1) In a feed device that sends out a long object to be conveyed in the longitudinal direction thereof, the fixed chuck capable of sandwiching the object to be conveyed, and the fixed chuck is disposed on the delivery direction side of the object to be conveyed; and A feed chuck which is provided so as to be able to come into contact with and separate from the fixed chuck and can sandwich the object to be conveyed; a reciprocating device which reciprocates the feed chuck along the longitudinal direction; the feed chuck and the fixed chuck; An opening / closing mechanism for performing an opening / closing operation of the first chuck, and the opening / closing mechanism is provided in the feed chuck, and is provided in the fixed chuck for moving the chuck by opening and closing the chuck. The second cam follower for opening and closing the first and second cam followers follow, and the first and second cam followers follow. A first portion where the feed chuck and the fixed chuck are opened when the first and second cam followers are located; a second portion where the feed chuck and the fixed chuck are closed when the first and second cam followers are located; And a single drive mechanism that switches the position of the first and second cam followers between the first and second parts by moving the cam. To do.
[0009]
(2) The feed device according to (1), wherein the cam is formed so that at least one of the first and second cam followers is positioned in the second portion. And
[0010]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a perspective view showing a feed device 10 according to an embodiment of the present invention. In the figure, arrows XYZ indicate three orthogonal directions, arrow XY indicates a horizontal direction, and arrow Z indicates a vertical direction.
[0011]
The feed device 10 includes a gantry 11. On the gantry 11, a knife edge 12 for smoothly feeding a ribbon (long article to be conveyed) R from an original roll (not shown), a roller 13 for guiding the fed ribbon R to a gripper mechanism 20 described later, 14 and a pair of gripper mechanisms 20 for intermittently feeding the ribbon R in the feeding direction P.
[0012]
The gripper mechanism 20 includes a feeding gripper 30, a fixing gripper 40, a reciprocating mechanism 50 that reciprocates the feeding gripper 30, and an opening / closing mechanism 60 that opens and closes the feeding gripper 30 and the fixing gripper 40. I have.
[0013]
The feed gripper 30 is provided on the gantry 11 along the arrow X direction in the drawing, and guides a slider 32 described later along the feed direction P. The feed gripper 30 reciprocates along the feed linear guide 31. A slider 32 provided movably, a lower chuck 33 supported by the slider 32, a shaft support 34 provided on the lower chuck 33, and swinging in the Q direction in the figure on the shaft support 34. A feed chuck 35 that is freely supported by a shaft, and a cam follower (first cam follower) 36 that is provided on the feed chuck 35 and follows a chuck opening / closing cam 64 described later are provided. The slider 32 is connected to an extension plate 55 described later.
[0014]
The fixing gripper 40 includes a lower chuck 43 fixed on the gantry 11, a shaft support 44 provided on the lower chuck 43, and a shaft support that can swing on the shaft support 44 in the Q direction in the figure. The fixed chuck 45 and a cam follower (second cam follower) 46 that is provided on the fixed chuck 45 and follows a chuck opening / closing cam 64 described later.
[0015]
The reciprocating mechanism 50 includes a servo motor 51 having a rotation shaft 52 in the arrow Z direction, an eccentric cam 53 attached to the rotation shaft 52 of the servo motor 51, a cam follower 54 disposed opposite to the eccentric cam 53, An extension plate 55 to which the cam follower 54 is attached and a tension spring 56 that pulls the extension plate 55 toward the eccentric cam 53 are provided. That is, by rotating the servo motor 51 of the reciprocating mechanism 50, the eccentric cam 53 rotates, the extension plate 55 reciprocates by the cam follower 54 that follows the eccentric cam 53, and the slider 32 described above reciprocates. It becomes.
[0016]
The opening / closing mechanism 60 is provided on the lower surface of the gantry 11 along the arrow X direction in the drawing and guides a slider 62 described later along the feed direction P, and reciprocating along the cam linear guide 61. A slider 62 provided freely and projecting from the gantry 11 in the direction of arrow Y in the figure, an air cylinder 63 for reciprocating the slider 62 in the direction of arrow X in the figure, and the upper side of the slider 62 in FIG. And a flat-plate-shaped chuck opening / closing cam 64 attached thereto.
[0017]
A crest portion (first portion) 65 and a trough portion (second portion) 66 are formed on the upper side surface of the chuck opening / closing cam 64 in FIG. The feed chuck 35 and the fixed chuck 45 are opened when the cam followers 36 and 46 are positioned at the peak 65, and the feed chuck 35 and the fixed chuck 45 are closed when the cam followers 36 and 46 are positioned at the valley 66. It has become a relationship.
[0018]
In the feed device 10 configured as described above, the ribbon R is intermittently fed as shown in FIGS. FIG. 3 is an explanatory view showing the relative position of the chuck opening / closing cam 64 and the cam followers 36, 46, and FIG. 4 shows the relationship between the opening / closing operation of the feed chuck 35 and the fixed chuck 36 and the position of the ribbon R. Note that T1 to T7 in FIG. 3 and T1 to T7 in FIG. 4 indicate the same timing.
[0019]
The ribbon R is held between the feed chuck 35 and the fixed chuck 45 in advance. At the origin position, the cam follower 36 is positioned at the valley 66 and the cam follower 46 is positioned at the peak 65, so that the ribbon R is clamped by the feed chuck 35 and is released by the fixed chuck 45 (T1). In this state, when the reciprocating mechanism 50 is operated to advance the feed chuck 35, the ribbon R moves in the feed direction P (T2).
[0020]
When the air cylinder 63 is operated and the chuck opening / closing cam 64 is moved in the right direction in FIG. 3, the cam follower 36 is positioned at the valley 66 and the cam follower 46 is positioned at the valley 66, so that the ribbon R is fed to the feed chuck 35 and the fixed chuck. It does not move while being clamped at 45 (T3).
[0021]
Next, when the air cylinder 63 is operated and the chuck opening / closing cam 64 is further moved to the right in FIG. 3, the cam follower 36 is positioned at the peak 65 and the cam follower 46 is positioned at the valley 66, so that the ribbon R is fed to the chuck. It is released from 35 and remains clamped by the fixed chuck 45 (T4). In this state, the reciprocating mechanism 50 is operated to retract the feed chuck 35. At this time, since the ribbon R is not clamped by the feed chuck 35, the ribbon R does not move backward (T5).
[0022]
Next, when the air cylinder 63 is operated and the chuck opening / closing cam 64 is moved in the feed direction P, the cam follower 36 and the cam follower 46 are positioned in the trough portion 66 so that the ribbon R is clamped by the feed chuck 35 and the fixed chuck 45. (T6).
[0023]
Further, when the air cylinder 63 is operated and the chuck opening / closing cam 64 is further moved leftward in FIG. 3, the cam follower 36 is positioned at the valley 66 and the cam follower 46 is positioned at the peak 65, whereby the ribbon R is fed to the feed chuck 35. Is returned to the open origin state by the fixed chuck 45 (T7).
[0024]
As described above, the ribbon R can be intermittently fed by operating the air cylinder 63 and the reciprocating mechanism 50. In particular, since the opening and closing operations of the feed chuck 35 and the fixed chuck 45 can be operated by one air cylinder 63, the apparatus configuration can be simplified, and the ribbon R can be intermittently fed at high speed. Further, for the same reason, the operability is improved when adjusting the feed amount.
[0025]
Since a pair of gripper mechanisms 20 are provided, they can be operated independently of each other. However, by synchronizing them, a wide ribbon R can be intermittently fed.
[0026]
FIG. 5 is a view showing a feed device 70 according to the second embodiment of the present invention. 5, the same functional parts as those in FIG. 1 are denoted by the same reference numerals, and detailed description thereof is omitted.
[0027]
The feed device 70 is different from the feed device 10 described above in that there is only one gripper mechanism 20. With such a configuration, the same effect as that of the feed device 10 can be obtained, and a wide sheet (long object to be conveyed) H can be intermittently fed.
[0028]
Note that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the present invention.
[0029]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to intermittently feed a long to-be-conveyed object at high speed, without complicating an apparatus.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a feed device according to a first embodiment of the present invention.
FIG. 2 is a side view schematically showing a reciprocating mechanism incorporated in the feed device.
FIG. 3 is an explanatory view showing a relative position between a chuck opening / closing cam and a cam follower incorporated in the feed device.
FIG. 4 is an explanatory view showing a relationship between an opening / closing operation of a feed chuck and a fixed chuck incorporated in the feed device and a position of a ribbon.
FIG. 5 is a perspective view showing a feed device according to a second embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10,70 ... Feed device, 20 ... Gripper mechanism, 30 ... Feed gripper, 35 ... Feed chuck, 36 ... Cam follower (first cam follower), 40 ... Fixing gripper, 45 ... Fixed chuck, 46 ... Cam follower (second) , 50 ... reciprocating mechanism, 60 ... opening / closing mechanism, 63 ... air cylinder, 64 ... chuck opening / closing cam, 65 ... mountain part (first part), 66 ... valley part (second part).

Claims (2)

In a feed device that sends out a long object to be conveyed in its longitudinal direction,
A fixed chuck capable of clamping the object to be conveyed;
A feed chuck that is arranged on the delivery direction side of the object to be conveyed with respect to the fixed chuck, and is provided so as to be able to contact with and separate from the fixed chuck and sandwich the object to be conveyed;
A reciprocating device for reciprocating the feed chuck along the longitudinal direction;
An opening / closing mechanism for opening / closing the feed chuck and the fixed chuck,
The opening / closing mechanism is provided in the feed chuck, and a first cam follower that opens and closes the chuck by movement thereof;
A second cam follower which is provided in the fixed chuck and which opens and closes the chuck by movement thereof;
When the first and second cam followers follow and the first and second cam followers are positioned, the first portion where the feed chuck and the fixed chuck are opened, and the first and second cam followers A cam having a second portion that closes the feed chuck and the fixed chuck when positioned;
A feed device comprising: a single drive mechanism that switches the positions of the first and second cam followers between the first and second portions by moving the cam. 2. The feed device according to claim 1, wherein the cam is formed so that at least one of the first and second cam followers is positioned in the second portion.

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