JPS63169294A - Guide apparatus for cutting edge in reciprocating type cutter - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is suitable for cutting bread, flour products such as castella and cakes, pastry products such as cheese and ham, or vegetables (hereinafter referred to as bread etc.). The present invention relates to a guide device for a cutting blade in a reciprocating cutting device.

[Conventional technology]

As a cake cutting device, there is a known reciprocating device that cuts a cake by reciprocating a tool rest having a plurality of cutting blades parallel to each other horizontally in the length direction of the cutting blades using a crank mechanism. (Special Publication No. 56-28678).

The cutting blade of this reciprocating cutting device slows down in the vicinity of its turning point (near the top dead center and bottom dead center of the crank) and stops momentarily at the turning point, so its cutting form changes. There are problems in that the sharp cutting changes from a sharp pull to a forced cutting or a state close to it, which impairs the sharpness, and the cut surface is not smooth and uneven, resulting in a decrease in commercial value.

In order to solve this problem, the proposer of the present invention proposed a guide member C equipped with three upper and lower cam followers b on a tool rest 1 to which a cutting blade (not shown) is attached, as shown in FIG. is attached via the pivot d, and the cam follower b of the guide member C is guided by both upper and lower surfaces of the arc-shaped cam e, and while the cutting blade remains in a horizontal state, the guide device protrudes in the direction of the cutting edge (downward). We have developed a reciprocating cutting device configured to make circular arc movements.

[Problem that the invention seeks to solve]

However, it has been found that the configuration of the guide device described above has problems in that a large number of cam followers b are used, the structure is complicated, and noise is likely to be generated.

[Means for solving problems]

The present invention provides a reciprocating cutting device that cuts an object to be cut, such as bread, by reciprocating the cutting blade in the longitudinal direction with respect to the frame by a drive device. A plurality of cam follower mechanisms consisting of two cam followers arranged at a required interval in the direction of the cutting edge of the blade are provided, and the two cam followers of the cam follower mechanism are guided on the front and back sides on the other side of the frame and the cutting blade. The above-mentioned problem is solved by providing a plurality of cams corresponding to the cam follower mechanism, which guide the cutting blade by a surface and cause the cutting blade to move in a convex reciprocating arc in the direction of the cutting edge.

[Effect]

When the drive device is activated, the cutting blade reciprocates in its length direction. At this time, one cam follower in the direction of the cutting blade's cutting edge is guided by one guide surface of the cam, and the other cam follower is guided by one guide surface of the cam. , guided by the other guide surface of the cam,
It moves relative to the cam and moves the cutting blade in a convex reciprocating arc in the direction of the cutting edge. At this time, the cam follower mechanism consisting of two cam followers moves the two cam followers relative to the guide surfaces on the front and back surfaces of the cam, so the cutting blade maintains a predetermined state without changing its posture. Perform an arc movement. Since the number of cam followers that make up the cam follower mechanism is kept to a minimum, operating noise is reduced.

〔Example〕

1 to 8 show a new reciprocating cutting device that employs the guide device of the present invention. A supporting tool rest 2, a drive device 3 that reciprocates the tool rest 2 in the length direction of the cutting blade 1, a guide device A according to the present invention that guides the tool rest 2, and a guide device A according to the present invention that guides the tool rest 2, and The main body is a transfer device 5 for moving an object W to be cut such as bread.

As shown in FIG. 3, the cutting blade l has jacket protrusions 6 on both ends.
7, one end of which is fitted into a slit 8a formed in one support member 8 of the tool post 2 to fit the fastening protrusion 6 into the groove 9a of the fastening metal fitting 9, and the other end of the fastening protrusion 6 is fitted into the groove 9a of the fastening metal fitting 9. The other end is fitted into a slit 10a formed in the support member 10, and the fixing protrusion 7 is fitted into the groove 11a of the spring plate 11, so that it is detachably attached to the tool rest 2. The support member 8 is fixed to the frame body 12 with a fixing bolt 13, and the other support member IO is adjustable in the left and right direction in FIG. Fixed. The frame body 12 is integrally attached to a movable member 17, and the movable member 17 and the support member 8.
Together with the IO, it constitutes the turret 2.

The guide device A according to the present invention includes a cam follower mechanism I6 attached to the front and rear sides of the movable member I7, and a cam follower mechanism I6 that is convex in the direction of the cutting edge 1iiL of the cutting blade I, that is, downward (
(See Fig. 5) A pair of upper and lower cam followers 16a, 16 that constitute a cam follower mechanism 16, consisting of arc-shaped cams 4 attached to the front, rear, left, and right inside of the upper frame 8.
b is in contact with the upper guide surface 4a and lower guide surface 4b of the cam 4 to guide the tool post 2, and the cutting blade l is configured to move in a reciprocating arc.

Here, to explain the shapes of the upper guide surface 4a and the lower guide surface 4b of the cam 4, the upper guide surface 4a is formed into a circular arc surface with a radius Ra, and the lower guide surface 4b is formed in the upper guide surface 4b. Cam followers 16a, 1 are arranged downward from the center Oa of the guide surface 4a.
6b distance D (= r a + r b + e) Radius Rb (-Ra r a
It is formed on the circular arc surface of IJ.

However, ra is the radius of the cam follower f6a, rb is the radius of the cam follower 16b, and t is the thickness of the cam 4 at a position perpendicular to the cam 4 from the center O1l.

In the above configuration, there are a pair of upper and lower cam followers 16a.

16b always moves in proper contact with the upper and lower guide surfaces 4a and 4b of the cam 4, and maintains the attitude of the tool post 2 horizontally.

The drive device 3 also includes a continuously variable speed motor 20 provided on the lower frame 19, and a crankshaft 24 (see FIG. ) and a crank rod 25 with one end attached to the crankshaft 24. The other end of the crank rod 25 is connected to a horizontal pin 26.
(FIG. 6) is connected to the movable member 17 of the tool rest 2 via a joint 27 and a vertical pin 28, and the cutting blade 1 is moved along its length through the tool rest 2 by rotation of the crankshaft 24 by the motor 20. It is designed to move in the horizontal direction.

Furthermore, the transfer device 5 has a lifting table 31 that is moved up and down by a cylinder 30 along corner guides 29 provided on the upper frame I8 and the lower frame 19, and a member 32 for receiving the workpiece W to be cut, and a member 32 for receiving the workpiece W. A presser member 33 that presses the object W on the upper side is attached, and the object W to be cut is held by the cutting blade 1.
It is now possible to avoid rising towards. The above-mentioned receiver member 32 and presser member 33 are wire-shaped or band-shaped, and a plurality of them are arranged in parallel with a movement gap of the cutting blade 1.
It is omitted in FIG. ), the member 32 is fixed to the lifting platform 31, and the holding member 3 of the latter
3 is rotatably supported by a lifting table 31 via a rotation shaft 34, and is urged to rotate clockwise in FIG. 1 by an urging mechanism 35 using a spring or the like. Further, an operating lever 36 is attached to the rotation shaft 34, and a push rod 37 provided on the lower frame 19 is returned to the spring 3.
If you push it to the right in Fig. 1 against the elastic force of 8, the operating lever 36
is pushed, the presser member 33 falls to the left in FIG. 3
The structure is such that it can be placed on top of J2.

In addition to the above, this reciprocating cutting device includes a balance table 40 (Fig. 4) that absorbs the inertia of the vertical movement of the tool rest 2, and a crank rod that absorbs the inertia of the tool rest 2 in the horizontal direction. A balance mechanism 41 (FIG. 7) is provided to maintain the balance of the mass of 25.

The balance table 40 includes a balance cam 42 provided below each cam 4 and having the same shape as those cams 4 and convex upward.
A pair of upper and lower cam followers 43.43 are connected to the upper and lower surfaces of the cam follower 43. do.

On the other hand, the balance mechanism 41 is formed to have the same diameter as the gear 44 attached to the crankshaft 24 and includes a balance weight 45, and includes a balance gear 46 meshed with the gear 44 and a balance gear 46 having the same diameter as the balance gear 46. Formed and balanced weight, ) 7 service date λ2
A balance gear 48 meshed with the balance gear 46, a balance gear 50 formed to have a diameter 1/2 of the balance gear 46 and provided with a balance weight 49, meshed with the balance gear 46, and the balance gear 50 meshed with the balance gear 46; A rose formed to have the same diameter as the gear 50 and equipped with a balance weight 51 and meshed with the balance gear 48;
It rotates in synchronization with the crankshaft 24 to absorb the inertia of the tool post 2 in the left-right direction, and also to maintain the balance of the mass of the crank rod 25. Since the balance mechanism 41 is provided symmetrically about the crank rod 25, it does not generate a couple.

Note that the reference numeral 53 in FIG. 6 indicates the tool rest 2 and the balance rest 40.
54 in Figures 1 and 2, which smooths the vertical movement of the
is a presser spring provided on the side plate 55 of the lifting table 31 and presses the side end surface of the object W to be cut, and the reference numeral 56 in FIG. 1 is a vibration isolating rubber.

Next, the operation of the guide device according to the present invention configured as described above will be explained together with the operation of the reciprocating cutting device.

From the state shown in Fig. 1, push the push rod 37 to the right and press the presser member 3.
3 to the left and insert the object W to be cut from the insertion opening 39, and return the push rod 37 to its original position. , to stabilize it.

After the above operations are completed, the drive device 3 is operated to reciprocate the cutting blade l left and right in FIG. and the lower guide surface 4b, respectively, and together with the tool post 2, the cutting blade I is moved in a downward convex reciprocating arc.

In this operating state, the cylinder 30 is extended to raise the workpiece W toward the cutting blade l. As soon as the cutting blade l passes the turning point, it starts descending, comes into contact with the object W, cuts a part of it, and then rises faster than the object W rises, cutting the cutting part of the object W. It moves away from the point, reaches the other turning point, and descends again to cut the object W. For this reason,
The cutting blade 1 retreats upward when the moving speed is zero or a slow speed close to zero, moves away from the cutting part of the workpiece W, does not directly participate in the cutting, and only moves at a fast moving speed. This means that the object W is cut in contact with the cut portion of the object W, and the entire object W to be cut is cut by pulling.

The cut object W is taken out from above the cutting blade l, but since the cutting edge 1a of the cutting blade l is directed downward, there is no danger and it is safe.

Note that the upper guide surface 4a and lower guide surface 4b of the cam 4 of the guide device A shown in the figure are each formed into a precise circular arc centered on one point, or formed into a circular arc centered on two or more points, or It may be centered at two or more points and may include a straight portion. In addition, in the diagram, the cam 4 is attached to the frame 18.
Further, the turret 2 is provided with cam followers 16a and 16b, and the frame 18 is provided with cam followers 16a and 16b.
.

16b and the cam 4 may be provided on the tool post 2, respectively. Furthermore, the cam followers 16a, 1
The roller 6b is most commonly used, but it can also be used as a slide shoe.

〔Effect of the invention〕

As explained above, the cutting blade guide device in the reciprocating cutting device according to the present invention is a reciprocating device that reciprocates the cutting blade in the longitudinal direction relative to the frame by the drive device to cut an object to be cut, such as bread. In the type cutting device, a plurality of cam follower mechanisms consisting of two cam followers arranged at a required interval in the direction of the cutting edge of the cutting blade are provided on either the frame or the cutting blade, and the frame and the cutting blade are On the other hand, a plurality of cams are provided corresponding to the cam follower mechanism, respectively, for guiding the two cam followers of the cam follower mechanism to the front and back guide surfaces and causing the cutting blade to move in a convex reciprocating circular arc in the direction of the cutting edge. The number of cam followers in the cam follower mechanism corresponding to one cam is the minimum of two, so the structure is simple and easy to implement, and it does not generate large operating noises during operation. It has the effect of preventing pollution.

[Brief explanation of the drawing]

Fig. 1 is a schematic sectional view of a reciprocating cutting device equipped with a cutting blade guide device according to the present invention, Fig. 2 is a plan view, Fig. 3 is a sectional view showing how the cutting blade is installed, and Fig. 4 5 is a front view showing the guide device according to the present invention; FIG. 6 is a sectional view showing the state in which the turret and balance stand are connected to the joint; FIG. The figure is a sectional view showing the relationship between the crankshaft, gears, etc., FIG. 8 is a schematic view of the balance mechanism, and FIG. 9 is a front view showing a general guide device. l... Cutting blade, 3... Drive device, 4... Cam, 4
a. 4b... Guide surface, 16... Cam follower mechanism, 16
a. 16b...Cam follower, 18...Frame, W.
...Object to be cut.

Claims (1)

[Claims] In a reciprocating cutting device that cuts an object to be cut, such as bread, by reciprocating the cutting blade in the longitudinal direction with respect to the frame by a drive device, either the frame or the cutting blade is provided with:
A plurality of cam follower mechanisms each consisting of two cam followers arranged at a required interval in the direction of the cutting edge of the cutting blade are provided, and the two cam followers of the cam follower mechanism are mounted on the other side of the frame and the cutting blade on the front and back sides. A guide for a cutting blade in a reciprocating cutting device, characterized in that a plurality of cams are provided corresponding to the cam follower mechanisms, respectively, for causing the cutting blade to move in a convex reciprocating arc in the direction of the cutting edge by being guided by the guide surface of the cutting blade. Device.