JP5845520B2 - Long member cutting device - Google Patents

Description

  The present invention relates to a long member cutting device for cutting a long member such as a tape.

  2. Description of the Related Art Conventionally, when a long member such as a thin wire is cut, a long member cutting apparatus is known that uses a pair of upper and lower rollers to cut a long member using an upper and lower blade while feeding the long member ( For example, see Patent Document 1).

Patent application No. 2705970

  However, in the long member cutting apparatus described in Patent Document 1, a cutting mechanism (upper and lower blades) for cutting a thin wire and a transport mechanism (a pair of upper and lower rollers described above) for sending a thin wire to the cutting mechanism are provided. However, since it was driven by separate power sources, there was a problem that the entire apparatus was enlarged.

In order to solve the above problem, the invention described in claim 1 is:
In a long member cutting device comprising: a conveying table that conveys a long member; a cutting mechanism that cuts the long member; and a conveying mechanism that sends the long member to the cutting mechanism.
The cutting mechanism includes a fixed lower blade attached to a position downstream of the long member in the conveying direction in the conveying table, a movable upper blade disposed above the fixed lower blade, and the movable upper blade Elevating and lowering drive device for moving up and down with respect to the fixed lower blade,
The transport mechanism includes a transport arm attached to the lift drive device so as to be lifted and lowered simultaneously with the movable upper blade,
The upper end of the transfer arm is disposed at a position upstream of the movable upper blade in the transfer direction with respect to the lift drive device, and the transfer direction with respect to the lift drive device. Can be pivoted to
Further, the transport arm is inclined downwardly toward the downstream side in the transport direction when the elevating drive device is lifted, and a lower end portion of the transport arm is an upper surface of the transport base or an upper surface of the long member. It is characterized by being brought into contact with.
According to a second aspect of the present invention, in the above, the vertical distance between the movable upper blade and the fixed lower blade when the elevating drive device is raised is determined by conveying the long member by the conveying arm. It is characterized by being set to be equal to or longer than the amount.
The invention described in claim 3 is characterized in that, in the above, an anti-slip portion is provided at a lower end portion of the transfer arm.
According to a fourth aspect of the present invention, in the above, a retrograde prevention mechanism capable of preventing the elongate member from going backward is provided upstream of the transport arm in the transport direction with respect to the transport arm. It is characterized by.

According to the first aspect of the present invention, the following operational effects can be obtained by the above configuration.
That is, in the above-described long member cutting apparatus, the long member set on the transport table is sent to the cutting mechanism by the transport mechanism and cut by the cutting mechanism.
At this time, first, the movable upper blade is raised by the lifting drive device that constitutes the cutting mechanism, and the conveying arm that constitutes the conveying mechanism is raised so that the lower end portion of the conveying arm is inclined obliquely. Is brought into contact with the upper surface of the carriage. And in this state, a long member is set on the upper surface of a conveyance stand. At this time, the long member is passed below the lower end portion of the transfer arm so that the lower end portion of the transfer arm presses the upper surface of the long member by its own weight. The long member is set at a position where it is pressed by the lower end of the transfer arm and on the near side reaching the fixed lower blade.
Next, the elevating drive device is driven to lower the movable upper blade and the transfer arm. Then, since the distance between the upper end of the transfer arm and the upper surface of the long member decreases as the upper end of the transfer arm moves directly below, the transfer arm having a constant length is The inclination angle decreases so as to fall down with respect to the transport table, and thereby the lower end portion of the transport arm is moved downstream in the transport direction.
That is, the up-and-down movement of the upper end portion of the transfer arm is converted into a reciprocating movement in the transfer direction of the lower end portion of the transfer arm. Due to the movement of the lower end of the transfer arm toward the downstream side in the transfer direction, the long member is transferred toward the cutting mechanism on the downstream side. At this time, since the weight of the transfer arm and the force applied when the elevating drive device is lowered are applied to the upper surface of the long member, the long member is moved by the force from the transfer arm. It is forcibly transported downstream in the transport direction.
At this time, the conveyance amount of the long member is substantially equal to the movement amount of the lower end portion of the conveyance arm in the conveyance direction. In addition, the conveying speed of the long member (and the amount of change in the conveyance amount) is slow (or less) at the beginning, early (or more) at the middle, and slower (or less) at the end. That is, the long member is conveyed by a non-constant movement. In addition, the raising / lowering amount (elevating stroke) between the movable upper blade and the transfer arm by the elevating drive device is equal to or shorter than the distance between the lower portion of the elevating drive device and the upper surface of the transfer table. (In this case, the elevating stroke of the elevating drive device is shorter than the above distance).
Then, when the movable upper blade is lowered in accordance with the conveyance of the long member, the long member is cut between the movable upper blade and the fixed lower blade.
After the elongate member is cut, the movable upper blade and the transfer arm are raised by the elevating drive device, and the movable upper blade and the transfer arm are returned to the initial position (upper limit position) described above.
At this time, the lower end portion of the transfer arm moves along the upper surface of the long member to the upstream side in the transfer direction, and is returned to the initial state with the largest inclination angle. When raising and lowering the elevating drive device, the weight of the transfer arm is hardly applied to the upper surface of the long member, and the force from the elevating drive device is hardly applied. The transfer arm moves to the upstream side so as to slide on the upper surface of the long member or stroke the upper surface of the long member, and is returned to the initial position described above. There is no such thing as reversing the member upstream in the conveying direction or causing the long member to bend.
Thereafter, by repeating the above, the conveyance of the long member and the cutting of the long member are continuously performed.
As described above, both the cutting mechanism and the transport mechanism can be driven by the lifting drive device. That is, two mechanisms (a cutting mechanism and a transport mechanism) can be driven by one power source (elevating drive device), so that the entire apparatus can be reduced in size and the cost can be reduced accordingly. It becomes possible.
According to the second aspect of the present invention, the following effects can be obtained by the above configuration. That is, the vertical distance between the movable upper blade and the fixed lower blade when the lifting drive is raised is equal to or longer than the transport amount of the long member by the transport arm. By doing so, the operation timing of the transport mechanism and the cutting mechanism can be set so that the long member is cut in accordance with the end of the transport of the long member.
According to the third aspect of the present invention, the following operational effects can be obtained by the above configuration. That is, by providing an anti-slip portion at the lower end of the transfer arm, the anti-slip portion prevents slippage between the lower end of the transfer arm and the long member when the elongate member is transferred by the transfer arm. Since it prevents, the conveyance amount of a long member can be stably made into fixed length.
According to the invention described in claim 4, the following effects can be obtained by the above-described configuration. That is, by providing an anti-reverse mechanism that can prevent the long member from reversing upstream of the conveying arm in the conveying direction of the conveying table, the long member can be stably sent downstream without reversing. Thus, it is possible to assist in cutting to a certain length.

1 is an overall view of a long member cutting device according to an embodiment of the present invention. It is the elements on larger scale which show the state before the cutting | disconnection of FIG. It is the elements on larger scale which show the state after the cutting | disconnection of FIG.

Hereinafter, the present embodiment and examples embodying the present embodiment will be described in detail with reference to the drawings.
1 to 3 show this embodiment and its modifications.

  <Configuration> The configuration will be described below.

(Configuration 1)
As shown in FIG. 1, a long member cutting apparatus 1 according to this embodiment includes a transport table 3 for transporting a long member 2, a cutting mechanism 4 for cutting the long member 2, and the cutting mechanism 4. And a transport mechanism 5 for feeding the long member 2.
Then, the cutting mechanism 4 has a fixed lower blade 7 attached to a position on the downstream side (right side in the figure) of the long member 2 in the conveying direction on the conveying table 3, and above the fixed lower blade 7. The movable upper blade 8 is provided, and an elevating drive device 9 for moving the movable upper blade 8 up and down relative to the fixed lower blade 7 is provided.
Further, the transport mechanism 5 includes a transport arm 11 attached to the lift driving device 9 so as to be lifted and lowered simultaneously with the movable upper blade 8.
The transfer arm 11 has an upper end portion 11a disposed at a position upstream of the movable upper blade 8 with respect to the lifting / lowering drive device 9 in the transfer direction 6 (left side in the figure). Further, it is attached to the lifting drive device 9 so as to be swingable in the transport direction 6.
Further, the transport arm 11 is inclined downwardly toward the downstream side (right side in the figure) in the transport direction 6 when the elevating drive device 9 is lifted, and the lower end portion 11b of the transport arm 11 is the transport table. 3 or the upper surface of the long member 2.

(Supplementary explanation 1)
Here, the above-described “long member cutting device 1” includes the transport table 3, the cutting mechanism 4, and the transport mechanism 5, as described above. And the elongate member cutting device 1 has the casing 12 which accommodates these. The casing 12 includes at least a base member 13 constituting a bottom surface portion, a front plate 14 (a left side surface in the drawing), one side plate portion 15 (a back side surface in the drawing), and a top plate portion 16. It is supposed to have. In this case, the casing 12 has a rectangular parallelepiped shape in which the back surface portion (the surface on the right side in the drawing) and the other side surface portion (the surface on the near side in the drawing) are opened. In addition, the positional relationship of each surface is based on the conveyance direction 6 of the long member 2. Among these, the base member 13 is configured such that the transport table 3 is installed in a fixed state on the base member 13. The front plate 14 constitutes an upstream surface in the transport direction 6. Other configurations will be appropriately described as necessary.

  The above-mentioned “long member 2” can be a linear member such as a wire, a tape-like member, or the like. In this case, the long member 2 is formed by inserting a continuous part formed by connecting terminal portions of a plurality of electronic parts with a tape-like member into an automatic assembly apparatus (not shown) and cutting the electronic part with the automatic assembly apparatus. The tape-like member (waste tape) remaining after use is used. On the upper surface of the tape-like member in the figure, a number of protrusions 2a (terminal portion cut pieces) extending in the width direction are formed at regular intervals. However, the long member 2 that can be cut by the long member cutting apparatus 1 is not limited to the tape-like member described above.

  The above-described “conveying table 3” has a smooth surface on which the long member 2 is placed and can be conveyed while sliding the long member 2.

  The above-mentioned “transport direction 6” is a moving direction of the long member 2 placed on the upper surface of the transport table 3 in the longitudinal direction and toward the distal end side.

  The above-described “fixed lower blade 7” is attached along, for example, the downstream side of the long member 2 in the conveyance direction 6 in the conveyance table 3. The fixed lower blade 7 is a horizontal blade having an overall width wider than that of the long member 2. In this case, the fixed lower blade 7 has a length that extends over almost the entire region on the downstream side of the transport table 3. On the downstream side of the fixed lower blade 7, a receiver or a storage bag (not shown) that receives a cut piece of the long member 2 may be installed as necessary.

  The above-described “movable upper blade 8” can shear the long member 2 with the fixed lower blade 7. The movable upper blade 8 has an overall width wider than that of the long member 2. In this case, the movable upper blade 8 has a width dimension several times that of the long member 2. The movable upper blade 8 is an inclined blade, a chevron blade, a saw blade or the like that is inclined with respect to the vertical direction and the width direction. A guide portion 17 that guides the movable upper blade 8 to the position of the fixed lower blade 7 is provided on the downstream side of the transport table 3 as necessary. The guide portion 17 is provided with a gap capable of accommodating the movable upper blade 8 between the fixed lower blade 7. The upper surface of the guide portion 17 is set to be substantially flush with the upper surface of the transport table 3.

  For example, a cylinder device (air cylinder or hydraulic cylinder) capable of extending and contracting in the vertical direction is used for the above-described “lifting drive device 9”. For example, the elevating drive device 9 is fixed to the top plate portion 16 (the lower surface thereof). The lifting drive device 9 is installed with its rod end portion 9a facing downward, and the movable upper blade 8 (cutting mechanism 4) is disposed below the rod end portion 9a via an attachment member 18. ) And the transfer arm 11 (transfer mechanism 5) are attached at the same time.

  As the above-mentioned “transport arm 11”, for example, an elongated metal plate having a strip shape (in this case, the upper end portion 11a is a wide T-shape) extending substantially in the vertical direction is used. The transfer arm 11 has a strength that does not cause plastic deformation when the long member 2 is transferred. The transfer arm 11 has an upper end portion 11a (or an upper side portion) that is swingable to a lifting drive device 9 (a rod end portion 9a thereof) by a swing center shaft 19 extending in the width direction of the long member 2. It is supported. In this case, the swinging central shaft 19 is attached to the end surface of the attachment member 18 in the transport direction 6 with a spacer member 18a for securing a necessary overhang amount.

  The lower end 11b (or lower side) of the transfer arm 11 has a distance that is substantially the same as or slightly longer than the transfer amount 20 of the long member 2 and is closer to the transfer direction 6 than the fixed lower blade 7. It is grounded (abutted against the upper surface of the carriage 3 or the upper surface of the long member 2) at a position on the upstream side. By adopting such a configuration, interference between the lower end portion 11b of the transfer arm 11 and the movable upper blade 8 is prevented.

  In this case, the inclination angle of the transfer arm 11 with respect to the vertical direction is to prevent an excessive force from the elevating drive device 9 from being applied to the transfer arm 11 while ensuring the transfer amount 20 of the long member 2. In addition, it is set within a range of approximately 20 to 45 degrees. The transport arm 11 is longer than the transport amount 20 (transport stroke) by an amount corresponding to the inclination angle described above.

(Configuration 2)
In the above description, the vertical distance 21 (cutting stroke) between the movable upper blade 8 and the fixed lower blade 7 when the elevating drive device 9 is raised is defined as the length of the long member 2 by the transfer arm 11. It is set to be substantially the same as or longer than the carry amount 20 (carry stroke).

(Supplementary explanation 2)
The above-described “vertical distance 21 between the movable upper blade 8 and the fixed lower blade 7” is uniquely determined when the blade portion of the movable upper blade 8 is a horizontal blade, but the blade of the movable upper blade 8 When the portion is not a horizontal blade, for example, when the blade portion of the movable upper blade 8 is inclined or not linear, it is not uniquely determined. It is substantially judged according to the cutting situation. For example, the highest position (cutting end point) in contact with the long member 2, the lowest position (cutting start point), an intermediate position thereof, or the like can be used as the reference of the interval 21. In this case, the highest position in contact with the long member 2 is used as a reference.

  That is, since the conveyance speed of the long member 2 (and the amount of change of the conveyance amount 20) becomes slow (or less) at the end of the stage as will be described later, when the change of the conveyance amount 20 at the end becomes almost zero, It is possible to make adjustments so that cutting starts slightly before the end of conveyance or ends cutting. Even in this way, it is possible to ensure the stability, safety and certainty of cutting. Accordingly, the above-described interval 21 (cutting stroke) and the conveyance amount 20 (conveyance stroke) are “substantially the same” and these cases are widely included.

(Configuration 3)
In the above, if necessary, the anti-slip portion 25 is provided at the lower end portion 11 b of the transfer arm 11.

(Supplementary explanation 3)
Here, the above-described “non-slip portion 25” may be a non-slip member such as rubber or rubber-based material attached to the lower end portion 11b of the transfer arm 11. Alternatively, the anti-slip portion 25 may be an anti-slip edge portion formed by machining or grinding on the lower end portion 11 b of the transfer arm 11.

(Configuration 4)
In the above description, when necessary, a reverse travel prevention mechanism 31 capable of preventing the long member 2 from reversing is provided upstream of the transport arm 11 in the transport direction 6 from the transport arm 11. To.

(Supplementary explanation 4)
Here, the above-mentioned “reverse” literally means that the long member 2 returns to the upstream side in the transport direction 6.

  For example, a hinge member or the like in which two rotating pieces 31a and 31b (hinge pieces or attachment pieces) are rotatably connected by a hinge shaft 31c can be used as the “reverse travel preventing mechanism 31”.

  In this case, one rotating piece 31a is inclinedly arranged toward the downstream side in the transport direction 6 and installed so that the lower end thereof is in contact with the upper surface of the transport table 3 or the upper surface of the long member 2. doing.

  The other rotating piece 31 b is attached to the front plate 14 installed as a part of the casing 12 at a position upstream of the transport table 3. For example, the front plate 14 is formed of a transparent plate so that the inside can be seen from the outside. The front plate 14 has a long member at the same height as the upper surface of the transport table 3. Two insertion openings 14a and the like are provided. The other rotating piece 31b is attached to the upper side of the insertion port 14a.

  The hinge shaft 31 c described above extends in the width direction of the long member 2.

<Functional Effects> The operational effects of this embodiment will be described below.
(Operation effect 1)
According to the above configuration, the following operational effects can be obtained.

  In other words, in the long member cutting apparatus 1 described above, the long member 2 set on the transport table 3 is sent to the cutting mechanism 4 by the transport mechanism 5 and cut by the cutting mechanism 4.

  At this time, first, as shown in FIGS. 1 and 2, the movable upper blade 8 is raised by the elevating drive device 9 constituting the cutting mechanism 4, and the carrying arm 11 constituting the carrying mechanism 5 is raised, The lower end portion 11 b of the transfer arm 11 is brought into contact with the upper surface of the transfer table 3 in a state where the transfer arm 11 is inclined obliquely. In this state, the long member 2 is set on the upper surface of the transport table 3. At this time, the long member 2 is passed under the lower end portion 11b of the transfer arm 11 so that the lower end portion 11b of the transfer arm 11 presses the upper surface of the long member 2 by its own weight. The long member 2 is set at a position where it is pressed by the lower end portion 11 b of the transfer arm 11 and on the near side reaching the fixed lower blade 7.

  Next, as shown in FIG. 3, the lift drive device 9 is driven to lower the movable upper blade 8 and the transfer arm 11. Then, the distance between the upper end portion 11a of the transfer arm 11 and the upper surface of the elongate member 2 is shortened by moving the upper end portion 11a of the transfer arm 11 directly below, so that the length is constant. The transfer arm 11 has a small inclination angle so as to fall down with respect to the transfer table 3, whereby the lower end portion 11 b of the transfer arm 11 is moved downstream in the transfer direction 6.

  That is, the up-and-down movement of the upper end portion 11 a of the transfer arm 11 is converted into a reciprocating movement in the transfer direction 6 of the lower end portion 11 b of the transfer arm 11. The long member 2 is transported toward the downstream cutting mechanism 4 by the movement of the lower end portion 11b of the transport arm 11 toward the downstream side in the transport direction 6. At this time, since the weight of the transport arm 11 and the force applied when the elevating drive device 9 is lowered are applied to the upper surface of the long member 2, the long member 2 has the transport arm 11. 11 is forcibly transported to the downstream side in the transport direction 6 by the force from 11.

  At this time, the conveyance amount 20 of the long member 2 is substantially equal to the movement amount of the lower end portion 11 b of the conveyance arm 11 in the conveyance direction 6. Further, since the conveyance speed of the long member 2 (and the amount of change in the conveyance amount 20) changes so as to draw a sine curve, the beginning is slow (or less), the middle is early (or more), and the end is slow again. (Or less). That is, the long member 2 is conveyed by a non-constant movement. In addition, the raising / lowering amount (elevating stroke) of the movable upper blade 8 and the transfer arm 11 by the raising / lowering driving device 9 is the same as the distance between the lower part of the raising / lowering driving device 9 and the upper surface of the conveying table 3 or (In this case, the lift stroke of the lift drive device 9 is shorter than the above distance).

  Then, the long member 2 is cut between the movable upper blade 8 and the fixed lower blade 7 by lowering the movable upper blade 8 in accordance with the conveyance of the long member 2.

  After the cutting of the long member 2, as shown in FIG. 2, the movable upper blade 8 and the transport arm 11 are raised by the lifting drive device 9, and the movable upper blade 8 and the transport arm 11 are in the initial state described above. Return to position (upper limit position).

  At this time, the lower end portion 11b of the transfer arm 11 moves along the upper surface of the long member 2 to the upstream side in the transfer direction 6 and is returned to the initial state where the inclination angle is the largest. When the elevating drive device 9 is raised, the weight of the transfer arm 11 is hardly applied to the upper surface of the long member 2 and the force from the elevating drive device 9 is applied. Since there is almost nothing, the transfer arm 11 is moved upstream so as to slide on the upper surface of the long member 2 or stroke the upper surface of the long member 2 and returned to the initial position described above. Therefore, there is no case where the elongate member 2 is moved backward to the upstream side in the conveying direction 6 or the elongate member 2 is not bent.

  Thereafter, by repeating the above, the conveyance of the long member 2 and the cutting of the long member 2 are continuously performed.

  As described above, both the cutting mechanism 4 and the transport mechanism 5 can be driven by the elevating drive device 9. That is, two mechanisms (the cutting mechanism 4 and the transport mechanism 5) can be driven by one power source (elevating drive device 9), so that the entire apparatus is reduced in size and the cost is reduced accordingly. It becomes possible to plan.

(Operation effect 2)
The vertical distance 21 between the movable upper blade 8 and the fixed lower blade 7 when the lifting drive 9 is raised is substantially the same as the transport amount 20 of the long member 2 by the transport arm 11. Alternatively, the operation timing of the transport mechanism 5 and the cutting mechanism 4 is set so that the long member 2 is cut in accordance with the end of the transport of the long member 2 by making it longer than that. Can be adjusted.

(Operation effect 3)
By providing the anti-slip portion 25 at the lower end portion 11 b of the transfer arm 11, the anti-slip portion 25 and the lower end portion 11 b of the transfer arm 11 and the elongate member when the elongate member 2 is transferred by the transfer arm 11. Therefore, the conveyance amount 20 of the long member 2 can be stably set to a constant length. As a result, the long member 2 can be reliably cut (chopped) into a certain length.

(Operation effect 4)
By providing the anti-reverse mechanism 31 that can prevent the elongate member 2 from reversing upstream of the transfer arm 11 in the transfer direction 6 of the transfer stand 3, the elongate member 2 can be stably moved without reversing. It can be sent downstream to assist in cutting to a certain length.

  Although the embodiments of the present invention have been described in detail with reference to the drawings, the embodiments are only examples of the present invention, and the present invention is not limited to the configurations of the embodiments. Needless to say, design changes and the like within a range not departing from the gist of the invention are included in the present invention. Further, for example, when each embodiment includes a plurality of configurations, it is a matter of course that possible combinations of these configurations are included even if not specifically described. Further, when a plurality of embodiments and modifications are shown, it is needless to say that possible combinations of configurations extending over these are included even if not specifically described. Further, the configuration depicted in the drawings is of course included even if not particularly described. Further, when there is a term of “etc.”, it is used in the sense that the equivalent is included. In addition, when there are terms such as “almost”, “about”, “degree”, etc., they are used in the sense that they include those in the range and accuracy recognized by common sense.

DESCRIPTION OF SYMBOLS 1 Long member cutting device 2 Long member 3 Conveyance stand 4 Cutting mechanism 5 Conveying mechanism 6 Conveying direction 7 Fixed lower blade 8 Movable upper blade 9 Lifting drive device 11 Conveying arm 11a Upper end portion 11b Lower end portion 20 Conveyance amount 21 Interval 25 Non-slip part 31 Anti-reverse mechanism

Claims (4)

In a long member cutting device comprising: a conveying table that conveys a long member; a cutting mechanism that cuts the long member; and a conveying mechanism that sends the long member to the cutting mechanism.
The cutting mechanism includes a fixed lower blade attached to a position downstream of the long member in the conveying direction in the conveying table, a movable upper blade disposed above the fixed lower blade, and the movable upper blade Elevating and lowering drive device for moving up and down with respect to the fixed lower blade,
The transport mechanism includes a transport arm attached to the lift drive device so as to be lifted and lowered simultaneously with the movable upper blade,
The upper end of the transfer arm is disposed at a position upstream of the movable upper blade in the transfer direction with respect to the lift drive device, and the transfer direction with respect to the lift drive device. Can be pivoted to
Further, the transport arm is inclined downwardly toward the downstream side in the transport direction when the elevating drive device is lifted, and a lower end portion of the transport arm is an upper surface of the transport base or an upper surface of the long member. A long-member cutting device characterized by being in contact with   The vertical distance between the movable upper blade and the fixed lower blade when the lifting drive is raised is equal to or longer than the transport amount of the long member by the transport arm. The long member cutting device according to claim 1, wherein   The elongate member cutting device according to claim 1 or 2, wherein a non-slip portion is provided at a lower end portion of the transfer arm.   4. The anti-reverse mechanism capable of preventing the elongate member from reversing is provided on the upstream side of the transfer stand with respect to the transfer arm in the transfer direction. 5. The long member cutting device according to claim 1.