JPS5919697A - Rubber pipe standard-size 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 The present invention relates to a sizing cutting device for rubber pipes, particularly unvulcanized comb pipes, and aims at making it possible to reliably and cleanly cut the ends.

In general, rubber pipes for gas or water use are continuously extruded by an extruder, and then cooled by a suitable cooling means such as cooling water while being conveyed by a conveyor such as a belt conveyor. After being cut to a fixed length of about 50 m, it is wound spirally and placed on a disc-shaped tray. Note that the rubber tube transferred to the tray is then vulcanized in a vulcanization can. In the above-mentioned rubber tube extrusion process, the current equipment adopted as a method for automatically cutting to size the unvulcanized rubber tube transferred by the conveying means is illustrated in FIGS. 1 and 2. As shown, the length of the rubber tube C to be cut is measured by the rotary wheel that rotates in contact with the heald conveyor aa, and when the specified length is reached, the cutting blade d, which is installed coaxially with the rotary wheel, is measured. The drum e is connected by an electromagnetic clutch f, rotates together with the rotary wheel, and the cutting blade d, which extends in a direction perpendicular to the direction in which the comb tube C is transported, cuts off the rubber tube C. However, since this conventional device is for pushing through as described above, there is a high possibility that the cut portion of the unvulcanized comb tube C will stick and become blocked as shown in FIG. There was a drawback that steam could not sufficiently enter the comb tube during vulcanization.

In addition, the unvulcanized comb tube C is not sharp enough to cut, and an uncut portion g as shown in FIG. 4 is often formed. To solve this problem, it is good to make the cutting edge sharp, but if it is too sharp, it will damage the surface of the conhair or cutting pedestal, so it is necessary to replace the pedestal frequently. .

This invention was made in view of the above circumstances, and by instantly cutting the rubber tube with a cutting blade that rotates 360 degrees along a virtual plane perpendicular to the direction of transport of the comb tube, the cut end can be reliably and cleanly cut. It is an object of the present invention to provide a sizing cutting device for pipes and pipes, which is characterized by being capable of cutting.

Embodiments of the present invention will be described in detail below with reference to FIGS. 5 to 12.

FIGS. 5 to 7 are a front view, a plan view, and a side view, respectively, schematically showing the cutting device of the present invention. On this frame 1, two heald conhair bodies 2, 3 constituting a part of the conveying means for transporting the comb tube A to be cut are arranged at appropriate intervals, and furthermore, these held conhair bodies 2, 3 are arranged at appropriate intervals. Two divided pedestals 4, 4 are arranged between them.

Further, on the frame j, an annular guide rail 6 is erected substantially vertically with a support frame 5. In this case, the guide rail 6 is erected so as to cross between the two pedestals 4, 4 in order to position a part of the conveying means at the lower eccentric position inside the conveying means. , as shown in FIGS. 8 and 9, along the guide rail 6 with a rotating shaft 7 horizontally installed at the center of the guide rail 6 and rotatably supported by the support frame 5 as a fulcrum. A cutting blade 8 that can rotate 360 degrees is attached.

In this embodiment, the cutting blade 8 is equipped at its tip with a guide body 10 having a pair of guide wheels 9°9 that roll while holding the guide rail 6 therebetween. The cutting blade 8 configured as described above can be rotated approximately 180 degrees from the top standby position of the guide rail 6 toward the conveyance means side at high speed, and after the rotation operation, the above-mentioned return drive means 11 It is designed to be transferred to a standby position.

As shown in FIGS. 10 and 1I, the return drive means 11 is a sprocket 1-14 driven by a drive motor 12 with a reduction gear installed at the lower part of the frame 1 via a chain 3. A one-way clutch 15 is assembled so that the sprocket can rotate in only one direction, and the sprocket 1-
14 and the small sprocket 1-14' on the same axis as the rotating shaft 7
A transmission chain 17 is suspended between the driven sprocket I.16 mounted on the drive sprocket I.16, and the rotation of the drive motor 12 is transmitted to the rotating shaft 7, and the cutting blade 8 is moved to the cutting standby position.
ing.

An arm 20 having a sedge link guide 19 is attached to the shaft 18 that supports the sprocket 14, and the sedge link guide I9 of this arm 20 is attached to the frame 1.
The cutting blade 8 is operated to cut by the contraction force of the sedge link 21 stretched between the cutting blade 8 and its own weight. That is, the tin link 21 is in a slightly contracted state from its longest state when the cutting blade 8 is in the cutting standby position, and the start/stop engagement means 22 to be described later that stops the cutting blade 8 from moving away from the cutting blade 8. At the same time as the release, the cutting blade 8
It is designed to allow the operation of the device to take place.

The engaging means 22 for starting and stopping, which controls the starting and stopping of the rotational movement of the cutting blade 8, is connected to the piston rod 24 of the air cylinder 23.
Stotsu Harotsu I・26 connected via stay 25 to
When the cutting blade 8 is in the cutting standby position, the cutting blade 8 (!-
An actuating portion 27 formed to be movable toward and away from the guide rail 6 without being removably engaged, a pulse detection piece 29 mounted coaxially with the drive roller 28 of the healdconhair body 2, and a proximity switch. 30 and a predetermined length detection means 31. ! : (see FIG. 12), the detecting means 3 detects a predetermined dimension of the comb tube A, and at the same time transmits the signal to the actuating section 27 to separate the splint rod 26 from the cutting blade 8. Depending on the stiffness, the cutting blade 8 is activated to cut the comb tube A to a predetermined length. It is designed to cut.

The return driving means 11 is configured to operate after the cutting blade 8 performs the cutting operation, and to stop its operation after moving the cutting blade 8 to the standby position. In this case, the drive morph 12 is controlled by a proximity switch 33 provided near the standby position of the cutting blade 8. Further, after receiving the signal from the detection means 31 and releasing the stopper rod 26 from the cutting blade 8, the stopper rod 26 of the start/stop engagement means 22 returns to the stopped state at various positions, and then It is now possible to perform the set state of.

In the comb tube sizing cutting device 1 of the present invention constructed as described above, in order to cut the comb tube A to be cut into a predetermined length, a The detecting means 31 of the starting/stopping engaging means 22 detects the predetermined length of the comb tube A and transmits the signal to the actuating section 27.
The cutting blade 8, which has accumulated the kinetic energy of the contractile force of the streak link 21, disengages from the stopper [j-rad 26 and guides the comb tube A while rotating 180 degrees along the guide line 6. Can be cut. Therefore, the comb tube A is cut instantly, leaving no uncut portion or unused portion.

After cutting, the cutting blade 8 is moved to a standby position in preparation for the next cutting by the return drive means 11, and cuts the comb tube A in the same way by detecting a predetermined length of the detection unit 31, and repeats the same operation. do. Note that a protector 1' (not shown) is provided outside the guide rail 6 for safety.

As explained above, the comb tube sizing cutting device of the present invention instantly cuts the comb tube using the 360-degree rotary cutting blade along the virtual plane orthogonal to the direction of transport of the comb tube. In particular, it is possible to reliably and cleanly cut the comb tube during continuous transport without crushing the cut end. As a result, there is no need for the unnecessary work of tearing off the uncut parts as in the conventional method, and excellent effects such as the ability to cut the comb tube quickly and efficiently can be obtained.

[Brief explanation of drawings]

Figure 1 is a side view of a conventional comb tube cutting device, and Figure 2 is a side view of a conventional comb tube cutting device.
11-+l line in the figure, FIGS. 3 and 4 are side views and sectional views showing the cut portion of the Koto tube cut by the conventional cutting device, and FIGS. A front view, a plan view, and a side view of the comb tube sizing cutting device,
FIG. 8 is a perspective view showing the mounting state of the cutting blade in this invention, FIG. 9 is a sectional view showing the mounting state of the cutting blade and guide rail, and FIGS. 10 and 11 are return drive means in this invention. FIG. 12 is an exploded perspective view showing a detection section of the start/stop engagement means in the present invention. In the figure, 1 is a frame, 2 and 3 are belt conveyor bodies (conveying means), 6 is an annular guide rail, 7 is a rotating shaft, 8 is a cutting blade, 9 is a guide wheel, and 10 is a guy!・Body, 11 is a drive means for return, 12 is a drive morph, 13 is a chain, 14 is a subwoofer, 15 is a cam clutch, 16 is a transmission chain for a driven spout [coquette, 171], 1i is a shaft, 1
Reference numeral 9 indicates a linkage I, 20 a mechanism, 21 a linkage, 22 a starting/stopping engagement means, 23 an air cylinder, 24 a piston rod, 25 a stay, and 26 a linkage I.
27 is an operating portion, 29 is a pulse detection piece, 3° is a proximity switch, and 31 is a detection means. Patent Applicant Sumitomo Com Industries Co., Ltd. Patent Attorney Takuya Ohara Figure 5 Figure 6 Figure 9 Figure 10 Figure 11

Claims (1)

[Claims] An annular guide rail that stands approximately vertically and includes a part of the conveying means for the rubber tube to be cut at an eccentric position inside the rail, and can rotate 360 degrees along the guide rail with the center of the guide rail as a fulcrum. The length of the cutting blade is approximately 18 mm when the cutting blade is directed downward from the standby position above the conveying means.
a tin link means (!:) that rotates the cutting blade downward by the tin link means, and includes a motor that drives the cutting blade in the same direction toward the standby position while resisting the urging force thereof; a retaining means that selectively engages with the cutting blade in the standby position to control starting and stopping of the cutting blade; and a holding means that detects a predetermined length of the rubber tube and supplies a control signal to an operating section of the engaging means. A rubber tube cutting device, comprising a length detecting means, and cutting the comb tube transported along the conveying means into predetermined lengths by the cutting blade which can be rotationally displaced.