JPS63225B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a V-belt skiving machine that accurately cuts both corners of an unvulcanized belt having a rectangular cross-section to form a symmetrical trapezoidal cross-sectional shape.

Conventionally, in this type of skiving machine,
The sharpness of the blade increases cutting accuracy (cutting amount),
Alternatively, various skiving machines have been proposed in order to improve efficiency by improving the disadvantages of asymmetrical cutting.

In the generally known V-belt forming process, the rubber tensile rope lamination and cover wrapping operations are carried out on the ventral side of the V-belt, that is, with the portion to be cut by the skiving machine on the inside. However, in order to perform the skiving operation easily, it is necessary to reverse the V-belt and perform the skiving operation with the ventral side facing up. This is because the circumference of the V-belt element is longer than its cross section, and it is necessary to cut out part of it symmetrically over the entire circumference, so the V-belt element is fixed.
That is, it is essential to eliminate left and right vibration while rotating in the longitudinal direction.

After the skiving work has been completed, the V-belt body needs to be further turned over in order to be used for the cover winding work.

The two-time reversal for skiving operations not only causes defects in belt quality, but also makes it difficult to continuously automate the above-mentioned lamination, skiving operations, and cover winding operations.

Moreover, the blades in conventional skiving machines have many problems due to their mechanism, resulting in damage to the blades,
Unevenness in sharpness often occurs. In addition, the angle and spacing of the two left and right blades are usually fixed, so they can only be applied to V-belt bodies of specific sizes.
When the sizes are different, it is troublesome to install a machine for each size or to replace parts.

In view of the current situation as described above, the present invention aims to eliminate these drawbacks and provide an improved skiving machine. More specifically, the present invention enables the following functions.

(1) The inside of the V-belt can be removed symmetrically in its normal position without reversing the V-belt body.

(2) In order to facilitate the automatic installation and automatic ejection of the V-belt element into the skiving machine, the cutting blade holding mechanism and related mechanisms should be able to be detached and removed from the vicinity of the belt element except during cutting operations. is possible.

(3) In order to eliminate uneven sharpness and breakage of the cutter, the cutter is almost completely wrapped around the circumference of the cylindrical tool rest, making it possible to prevent breakage while maintaining ease of replacement.

(4) Furthermore, as an additional requirement, the blade holding mechanism etc. should be separated so that it can be applied to V-belt bodies of various shapes.
It can be moved and adjusted.

Thus, the ultimate objective of the present invention is to greatly improve the efficiency of the V-belt molding process by making the above functions possible.

The skiving machine of the present invention, which achieves the above object, is characterized by two skiving machines with adjustable spacing.
a belt hanging part consisting of two pulleys; a pair of annular cutting blades arranged near the hanging part and swingable between a cutting position and a detachment position when not cutting; , a push roller is attached near the cutting blade and, like the annular blade, is swingable between the cutting position and the release position, and each part is organically related so that it can be operated automatically. This is due to the configuration of the skiving machine.

Hereinafter, further detailed aspects of the above-mentioned skiving machine will be sequentially clarified in accordance with the accompanying drawings and explanations based on the drawings.

However, it goes without saying that the present invention is not limited to these accompanying drawings and their descriptions, and design modifications may be made without departing from the purpose.

Figure 1 is a front view of the skiving machine of the present invention, Figure 2 is a front view of the skiving machine of the present invention;
The figure is a side view of the same. Also, Figure 3 is the same as Figure 1
FIG. 4 is an enlarged cross-sectional view of the cutting blade and its driving mechanism, and FIG. 5 is a perspective view of one example of the cutting blade.

First, as is clear from FIGS. 1 and 2, the skiving machine of the present invention has a hanging part A for the belt material to be cut, which is installed vertically on one side of the machine frame, and an upper part of the machine frame. The cutting blade mechanism B cuts the stretched belt material, and the pressing holding part C presses and holds the belt to a cutting position.

Hereinafter, each of the above parts will be explained in order.

(A) Belt hanging section The belt hanging section consists of a pair of pulleys, drive pulley 1 and extension pulley 2, shown in Figs. Drive is transmitted via the first timing pulley 5, belt 6, and second pulley 7, and then via the third pulley 8, belt 9, and fourth pulley 10 at the next stage. On the other hand, the extension pulley 2 is provided below the drive pulley 1 on one side of the machine frame, and is attached so as to be vertically movable along a guide 13 via a sliding body 12 connected to the upper end of the extension cylinder 11. After the belt element 3 is stretched between the driving pulley 1 and the belt element 3, the belt element 3 is appropriately moved downward to apply tension to the belt element 3.

(B) Cutting Blade Mechanism This mechanism is provided based on the cutting position near the upper drive pulley 1 of the hanging portion, and is constituted by a pair of annular cutting blades 14, 14'.

As shown in FIGS. 4 and 5, the annular cutting blades 14, 14' are attached to the outer periphery of the upper end of the cylindrical tool rests 16, 16' by springs 15 in a light and tight state, and cannot be replaced. It is becoming possible,
In order to maintain its sharpness, it can be rotated slightly by a series of gear transmission mechanisms, which will be described later.

That is, as shown in the figure, the oriental motor 17 is attached to one side of the belt hanging part A by a mounting plate.
is provided, and the power is sequentially transmitted from a pulley 18 attached to the motor shaft through a belt 19, a pulley 20, a gear 21, a gear 22, a pulley 23, a belt 24, a pulley 25, and a gear 26. Rotation is transmitted through a gear 27 coaxially attached to the lower part of the tables 16, 16', forming a rotating mechanism for a series of annular cutting blades.

Moreover, one of the annular cutting blades 14, 14' is held on the cylindrical tool rest 16 by a blade attachment part 31 at the tip of an arm 30 attached to the shaft 29 of the swing cylinder 28. ,
The other cutting blade 14' is rotatable about the shaft 29, while the other cutting blade 14' is rotatable around the pivot cylinder 29.
A cam 32 is mounted on this center line with a center e located at a position adjacent to 8, and the blade attachment portion 3 at the tip of the arm 30' is rotated about the center e.
1' is held by a cylindrical tool rest 16'.

Then, the cutting blade 14 moves from position b to position b' in FIG. 3 due to the pivoting movement of the swing cylinder 28.
On the other hand, the other cutting edge 14' is moved from position a to position a' in FIG. 3 by the action of cam 32.

In the above case, an arm 33 is attached to the turning center e of the cutting blade 14, and a coil spring 34 is installed between the end of the arm 33 and an appropriate position on the machine frame. The attached cutting blades 14, 14 are always tensilely biased from position a' in the direction a, and from position b' in the direction b. Therefore, it goes without saying that this spring 34 also serves to cause the singing cylinder 28 to pivot in the opposite direction and return the cutting blades to their original positions a, b.

Further, both cutting blades 14, 14' are at the operating position on the cylindrical tool rest 16, 16' of each of the cutting blades 14, 14'.
a', b', contact portions f, f' are formed to contact and position, and a position adjustment bolt 35 is provided on the tool post 16 on one side, the cutting blade 14 side in the figure. By moving the position adjustment bolt 35 in and out, the distance between the cutting blades 14 and 14' can be adjusted.

A mechanism C is installed near the side of the cutting blade mechanism B to press and hold the belt body to be cut against the cutting blade.

(C) Pressing and holding mechanism This mechanism mainly consists of a push roller indicated by 36 in FIGS. 1 and 3, and a pair of guide rollers 37 and 37' attached to the push roller. The push roller 36 is rotatably attached to a mounting portion attached to the machine frame via an arm 38, and is further connected to the rod end of the cylinder 40 via a second arm 39. , a push roller 36 is applied to the belt body 3 by the operation of the cylinder.
And guide rollers 37, 37' are pressed against the belt body 3, so that the belt body 3 is held while being guided so as to run straight.

The shape of the belt body is determined by the gap formed by the push roller 36 and the cutting blades 14, 14', and the portion protruding from the trapezoidal shape is cut away by the cutting blade. ing.

Further, a stopper 41 for adjusting the amount of movement, which the protrusion of the second arm 39 connected to the rod of the cylinder 40 comes into contact with, is provided above the machine frame so that the stopper 41 can be adjusted by turning a screw with a manual handle 42. and determine the positioning and cutting amount in the above case.

A push-out roller 43 for pushing out the belt body after cutting is further provided on the side of the cutting position so as to be movable back and forth by a cylinder 44.

Thus, as described above, the present invention consists of the belt hanging part A, the cutting blade mechanism B, and the pressing holding part C each configured as described above, all of which are attached to the machine frame at an appropriate position. It is configured such that the desired cutting action is performed according to a predetermined timing and under the operation described below.

Next, the operation of skiving a belt element into a desired shape using the apparatus of the present invention will be explained.

First, the belt element 3 to be cut is placed over the drive pulley 1 and extension pulley 2 shown in FIGS. 1 and 2, and the extension pulley 3 is moved downward by the extension cylinder 11 to cut the belt element. 3
The belt body 3 is tensioned to such an extent that it does not slip during cutting.

After completing the preparation in this way, the cylindrical tool rest 1
The thin annular cutting blades 14, 14', which are fixed along the circumferences of the blades 6, 16' and in close contact with each other at both ends by springs 15, move from positions a and b in the open and detached state shown in FIG. The swing cylinder 28 rotates and approaches the predetermined cutting positions a' and b', and the cutting positions are set.

The push roller 36 then moves to the cylinder 40.
The belt element 3 is approached by the operation of the belt element 3, and while being guided by the guide rollers 37 and 37' to run straight, the belt element 3 is pressed by a predetermined amount to a position where the circumferential edge of the belt element 3 is cut off. Push roller 36 and cutting blade 1 shown in FIG.
The portion protruding from the shape formed by 4 and 14' is removed.

In this case, the driving pulley 1 is rotated by the motor 4 in the direction of the arrow in FIG. Cutting is performed one after another.

After cutting is completed in this way, the cutting blades 14, 14'
and the push roller 36 is again connected to the cylinder 40.
The push-out roller 43 shown in FIG. 2 returns to its original position away from the cutting position by the operation of
is pushed forward by the cylinder 44, pushing the belt body 3 off. Then, the extension pulley 2 is raised by the cylinder 11 to release the tension on the belt body 3 and returns to its original position, completing the series of skiving operations.

After that, hang a new belt material again and perform the work in the same way.

During the above-mentioned operation, the cutting blades 14, 14' rotate very slightly so as to maintain a constant cutting edge. Also, when the sharpness becomes dull, it is held by just being lightly pulled by the spring, so you can always use it as needed.
Replace.

In addition, when using the skiving machine of the present invention, the explanation of the mechanism for supplying the belt body 3 to the machine or for transferring the belt after cutting to the next process machine will be omitted in this specification. Although,
For example, a mechanism such as that disclosed in Japanese Patent Publication No. 51-39292 can be applied, and this is easily inferred. However, the invention is not limited to this, and applications such as commercially available robots can also be easily considered.

As described above, since the skiving machine of the present invention is equipped with the above-mentioned belt hanging part, cutting blade mechanism, and pressure holding mechanism, the belt material can be easily hung on the belt hanging part. , there is no need to reverse the belt, and since it is held securely by the pressure holding mechanism, it is possible to perform symmetrical cutting on the left and right sides in the normal position. It can be applied to the shape of the V-belt body, and has a remarkable effect that can encourage widespread use.

Furthermore, the cutting blade mechanism and pressure holding mechanism are movable, allowing automatic loading and unloading of the V-belt element into the skiving machine, and can be incorporated into a continuous process and utilized for continuous V-belt molding. It is expected that this method will have advantages and contribute to significant streamlining of the V-belt molding process.

[Brief explanation of the drawing]

Figure 1 is a front view of the skiving machine of the present invention, Figure 2 is a front view of the skiving machine of the present invention;
The figure is a side view of the same figure, Figure 3 is a plan view of the main part seen from the direction Fifth
The figure is a perspective view showing an example of a cutting blade. A... Belt hanging part, B... Cutting blade mechanism, C...
...Press holding mechanism, 1... Drive pulley, 2... Extension pulley, 3... Belt element, 14, 14'...
...Annular cutting blade, 28...Swing cylinder, 36...
...Push roller, 37,37...Guide roller, 40...Cylinder, 43...Push out roller, 44...Cylinder.

Claims (1)

[Scope of Claims] 1. A belt hanging part consisting of a driving pulley and an extension pulley whose interval can be adjusted with respect to the pulley, and a belt hanging part disposed near the belt hanging on both pulleys and inside the belt. The pair of annular cutting blades includes a pair of annular cutting blades that cut oppositely on both sides, and a pair of push rollers that press and hold the belt in a cutting position near the suspended belt. The and push rollers can each swing between a belt cutting position and a release position when not cutting, and the belt to be cut is stretched between both rollers, and a pair of annular cutting blades are placed inside the belt in opposing positions. This is a V-belt skiving machine that is designed to cut the inside of the belt into the required shape. 2. The V-belt skiving machine according to claim 1, wherein the distance between the pair of annular cutting blades and the pushing amount of the push roller are adjustable. 3. Claims 1 or 2 in which the annular cutting blade is replaceable and moves slightly around the center.
V-belt skiving machine described in section.