JPH0152308B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an apparatus for covering the ends of paper tubes used as cores for cloth or belts by pasting pieces of paper for decorative purposes.

[Conventional technology]

Conventionally, covering the ends of paper tubes with decorative pieces of paper has been done entirely by hand.

[Problem that the invention seeks to solve]

Manual work as described above requires skill and low productivity, and the pieces of paper sometimes lift up during the drying process of the glue, resulting in a poor-looking finished product.

[Means for Solving the Problems] In order to solve the above-mentioned problems, the present invention provides a male die having a cutting edge larger in diameter than the diameter of the paper tube, and a receiver having approximately the same diameter as the cutting edge of the male die. It consists of a female mold with a hole, a paper tape coated with glue on the side facing the male mold is interposed between the male mold and the female mold, and the cutting blade of the male mold is inserted into the hole of the female mold. A punching means for punching out the paper tape to form a piece of paper by inserting the punching means, and a fitting hole having a smaller diameter than the receiving hole and slightly larger than the diameter of the paper tube in the inner part of the female receiving hole. It consists of a covering means that is connected to the female mold through a tapered hole and a heater is provided on the outer periphery of the female mold. The present invention provides a device for covering the end of a paper tube with a rolled core paper tube, in which the paper tube is inserted into an insertion hole and heated to dry the glue on the paper pieces.

[Effect]

A piece of paper punched by the punching means is supported in the receiving hole of the female mold, and when the paper tube is inserted into the insertion hole in this state, the piece of paper is squeezed by the tapered hole and tightly adheres to the outer periphery of the end of the paper tube, and then the paper tube is inserted into the female die. By heating the mold, the piece of paper is stuck to the end of the paper tube while maintaining a close contact state.

〔Example〕

In the figure, 1, 1 is an endless chain conveyor that receives and transfers paper tubes P sequentially supplied from a hopper 2, and is installed in two parallel tracks at appropriate intervals to sandwich the paper tubes P at the front and back. to be transferred. A base 3 is installed on the lower surface of the horizontal transfer section 1a of the chain conveyors 1, 1, and a fixed cylinder 4 is fixedly installed on the base 3 in the vertical direction. Then, a fixing member 6, which is located outside the two-gauge chain conveyor 1, and has vertical walls 5, 5, is fixed to the upper end of the rod 4a of the fixed cylinder 4, and is attached to the upper edge of the vertical walls 5, 5. Recesses 7, 7... having a width approximately equal to the diameter of the paper tube P and a depth slightly shorter than the diameter.
. . . to constitute a fixing means A for temporarily fixing eight paper tubes P. Note that guide rods 8, 8 are vertically provided on the lower surface of the fixed member 6 on both sides of the rod 4a of the fixed cylinder 4, and the guide rods 8, 8 are connected to the base 3.
It is supported so that it can slide up and down.

Next, to explain the punching means B, a receiving member 10 is suspended vertically on the lower surface of the top plate 9 located above the base 3 on the opposite surface of the fixing member 6, and a paper tube is attached to one side of the receiving member 10. The male molds 12, 12... each having a cutting edge 11 having a diameter larger than the diameter of P are inserted into the recesses 7, 7...
Eight protruding pieces are provided corresponding to the center extension line of... As shown in an enlarged view in FIG. 4A, a coil spring 13 is attached to the outer periphery of the male mold 12 so as to project forward from the surface of the cutting blade 11, and a recessed portion 14 is formed on the surface of the cutting blade 11. An extrusion plate 15 is installed here. This extrusion plate 15 has a sliding shaft 16 protruding from the back surface inserted into a through hole 17 of the male die 12 and supported, and is constantly maintained by the elastic force of a coil spring 18 and the stopper action of a collar 16' at the rear end of the sliding shaft 16. The extrusion plate 15 is kept flush with the surface of the cutting blade 11,
and a hemispherical protrusion 1 protruding from the surface of the extrusion plate 15
5' and 15' are made to slightly protrude from the surface of the cutting blade 11.

Reference numeral 19 denotes a female die that pairs with the male die 12, and has a receiving hole 2 having approximately the same diameter as the cutting edge 11 on the side facing the male die 12.
The female mold 19 has a hole of 8 on the movable plate 21.
installed in parallel. The movable plate 21 includes the base 3 and the top plate 9.
It is supported so that it can freely slide back and forth between. That is,
Two vertical shafts 22, 22 are erected between the base 3 and the top plate 9, and the vertical shafts 22, 22 support a lifting table 23 in a vertically movable manner.
Horizontal shafts 24, 24 are inserted through the shafts so as to be slidable in the horizontal direction, and a movable plate 21 is fixed to the tips of the horizontal shafts 24, 24. The rear ends of the horizontal shafts 24, 24 are connected by a connecting plate 25, and furthermore, a groove 26 is cut in the central rear surface of the connecting plate 25 in a longitudinal section. On the other hand, the base 3 and the top plate 9
A punching cylinder 28 is fixed horizontally to a vertical wall 27 erected therebetween, and a plunger 28c at the tip of a rod 28a of the punching cylinder 28 connects to the connecting plate 25.
By engaging the groove 26 of the punching cylinder 28
moves the connecting plate 25 back and forth to open the receiving hole 20 of the female die 19.
is fitted into the cutting edge 11 of the male die 12.

Next, explaining the covering means C, a fitting hole 29 having a smaller diameter than the receiving hole 20 and slightly larger than the diameter of the paper tube P is formed in the inner part of the receiving hole 20 of the female die 19 in the tapered hole 3.
Further, a heater 31 is provided around the outer periphery of the female mold 19. A delivery plate 32 having the same diameter as the paper tube P is installed inside the receiving hole 20.
is a through hole 33 that is drilled deeper inside the insertion hole 29.
The shaft portion 34 is inserted therein and pressed by a coil spring 35. This covering means C is a covering cylinder 36 fixedly installed below the punching cylinder 28.
The paper tube P is inserted into the insertion hole 29 by controlling the back and forth movement of the female mold 19, but the switching from the position of the punching means B to the position of the covering means C is performed by vertically moving the female mold 19 onto the top plate 9. The rod 37a of the vertically installed lifting cylinder 37 is directly connected to the central upper surface of the lifting table 23, whereby the lifting table 23 is pushed down, and the plunger 28c of the punching cylinder 28 is moved into the groove 26 of the connecting plate 25.
Then, the plunger 36c of the covering cylinder 36 engages and is connected to the groove 26.

To explain the operation of the present invention configured as above, first, the paper tubes P are conveyed in parallel by the chain conveyors 1, 1, and the eight paper tubes P are moved into the recesses 7, 7, . . . of the fixing member 6. Stops at the position corresponding to .... Next, the fixed cylinder 4 is operated as shown by the chain lines in FIGS. 3 and 2 to raise the rod 4a, receive each paper tube P in the recesses 7, 7, and raise it further to raise the upper surface of the paper tube P. is pressed against the lower surface of the receiving member 10 to temporarily fix the paper tube P. On the other hand, by operating the punching cylinder 28, the movable plate 21 is advanced as shown in FIG. When the cutting blade 11 of the mold 12 is fitted into the receiving hole 20 of the female mold 19, the paper piece D is removed from the paper tape T.
is punched out. At this time, the extrusion plate 15 retreats into the recessed part 14 against the elasticity of the coil spring 18 pressed by the paper tape T at the moment when the cutting blade 11 and the receiving hole 20 come into contact (FIG. 4B).
As soon as the paper is punched out, it moves back and the piece of paper D stuck to the cutting blade 11 due to the adhesive force of the glue is pushed into the receiving hole 20.
(Fig. 4 C). The female mold 19 holding the paper piece D in the receiving hole 20 in this manner returns to the position shown by the solid line in FIG. 2 with the return force of the punching cylinder 28. Note that the paper tape T that has been fitted around the outer periphery of the cutting blade 11 is pushed out by the restoring force of the coil spring 13, returns to the position shown in FIG. A new paper tape T is fed in front of the male die 12 in preparation for the next operation.

Then, the lifting cylinder 37 is operated to lower the lifting table 23 as shown by the chain line in FIG. Covered cylinder 3
It engages with the plunger 36c of No.6. In this state, the covering cylinder 36 is operated to advance the female mold 19 and insert the paper tube P into the insertion hole 29 as shown in FIG. 5B. At this time, the paper tube P is inserted into the paper piece D inside the receiving hole 20.
The paper piece D comes into contact with the paper tube P and reaches the insertion hole 29 together with the paper piece D. However, when the paper piece D passes through the tapered hole 30, it is squeezed and comes into close contact with the paper tube P. Also, the delivery plate 32 is a paper tube P.
is pushed back to the inner part of the insertion hole 29.
In this state, the heater 31 is heated to about 100°C to dry the glue on the paper piece D and it is pasted on the end of the paper tube P. Then, the covering cylinder 36 is moved back and the paper tube P is inserted into the insertion hole 29. Pull it out. At this time, the delivery plate 32 pushes out the paper tube P by the elastic force of the coil spring 35, making it easy to separate the paper tube P from the insertion hole 29. Next, each rod 37a of the lifting cylinder 37 and the fixed cylinder 4
and 4a move back and return to the state shown by the solid line in FIG. 2, and the chain conveyors 1, 1 are driven to transport the paper tube P.
A new paper tube P is placed on the fixing member 6 and the above steps are repeated. Of course, in the above process, only one end of the paper tube P is coated with the paper pieces D, so the paper tube P is reversed and fed into the hopper 2 again, and both ends are covered, as shown in Figure 6. A winding core E of a cloth or a belt is formed. In FIG. 2, another male die 38 and a female die 39 are provided below the male die 12 and the female die 19, respectively. This is for punching out a piece of paper with approximately the same diameter as the inner diameter of the tube P, and reinforcing the paper piece by fitting it to the end of the paper tube P before covering the paper piece D.
It is optional whether or not to use this.

[Effects of the Invention] As described above, according to the present invention, a single female mold is used to perform the paper strip punching means and the covering means, and the glue is dried within the female mold by heating with a heater. This makes it possible to provide cloth cores with uniform quality in a short period of time, making it possible to automate all operations that previously relied on manual labor, and greatly contributing to improved productivity.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, in which Fig. 1 is a partially sectional front view, Fig. 2 is a vertical sectional side view, and Fig. 3 is a partially front view showing the fixed member in an elevated state. 4A to 4C are sectional views of the main parts showing the punching means, FIGS. 5A and 5B are sectional views of the main parts showing the covering means, and FIG. 6 is a perspective view of the winding core. A... Fixing means, B... Punching means, C... Covering means, D... Paper piece, E... Winding core, P... Paper tube, T
... Paper tape, 11 ... Cutting blade, 12 ... Male type, 1
9... Female type, 20... Receiving hole, 29... Fitting hole, 3
0... Taper hole, 31... Heater.

Claims (1)

[Claims] 1 Consisting of a male mold with a cutting edge larger in diameter than the diameter of the paper tube, and a female mold with a receiving hole having approximately the same diameter as the cutting edge of the male mold, the side facing the male mold is coated with glue. A punching means for punching out the paper tape to form a piece of paper by interposing the paper tape coated with the above-mentioned paper tape between the male die and the female die and inserting the cutting blade of the male die into the receiving hole of the female die; A covering means in which a fitting hole having a smaller diameter than the receiving hole and slightly larger than the diameter of the paper tube is connected to the inner part of the receiving hole of the female mold via a tapered hole, and a heater is provided on the outer periphery of the female mold. A paper tube is inserted into the insertion hole of the female die while the paper piece punched out by the punching means is supported in the receiving hole of the female die, and the paper tube is heated to release the glue from the paper piece. 1. An end coating device for a cloth core paper tube, characterized in that the end portion is dried.