JPH02147553A - Clamping chain for carrying tape - Google Patents

Abstract

PURPOSE: To facilitate the attaching of a tape and make its certain transport possible by spring-energizing a movable holding part attached onto a fixed holding part, and composing it of a clamp part which is provided so as to be upward displaceable toward a releasing position and even backward rotatable and invertible. CONSTITUTION: A bracket 3 of a holding part 2 is bent right in an L-shape, and its upper part is formed into a support base 8, and a spring 6-energizing holding tongue 7 is engaged in a groove 9 formed at its front end. Each pin 17 provided on both the opposite sides of a square guide part 4 fixed to the lower side of the base 8 is engaged in a slot 18 formed on both the sides of the holding part 2, and a major axis 19 of the slot 18 is provided obliquely to a horizontal line 20. A holding edge part 22 on the holding tongue 7 engages strongly with the groove 9. The holding tongue 7 moves upward and back ward and rotates to form a large opening 40, and a tape wanted to be transported can be attached without a damage or deformation, and in addition, large pressing force is given to the tape by the engaging faces 23-25 of an edge part 22 to certainly transport the tape.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a clamp chain for transporting a tape, which holds the tape in a movable gripping portion and transports the tape while applying force while aligning the shape of the tape.

Such a tape conveying chain is used in a packaging machine or the like to convey the tape together with a container formed on the tape. That is, the tape mounted on the chain according to the invention is clamped or gripped onto the chain by clamping or gripping elements similar to gripping tongs and moved to a heating or forming position by means of a drive motor which is geometrically connected to the chain.

The processed tape is sequentially sent to a product outlet through a filling position, a sealing position, a punching position, etc., and is wound onto a winding roll as a processed tape.

BACKGROUND TECHNOLOGY AND PROBLEMS In conventionally known tape conveying clamp chains, it has been proposed to vary the shape of the gripping elements of the chain so as to apply an appropriate force along the conveyed tape. Various gripping shapes have been used.

However, the gripping elements used in conventional tape conveyance have a problem in that they cannot satisfactorily convey the tape while gripping it reliably. Also, conventional gripping methods that combine a spring-loaded movable pressure gripper with a fixed gripping configuration do not provide a reliable ramp for the tape being transported.

Furthermore, in the past, the movable gripping section could only move vertically upwards, which severely limited the opening when inserting the tape.This meant that the tape had to be bent slightly before being inserted into the open gripping section. It needed to be done. However, such a process increases processing costs and also poses a risk of tape damage.

Therefore, it is an object of the present invention to provide a clamp chain that improves the gripping elements of the clamp chain, makes it possible to simply attach the tape with the grip part open, and also realizes reliable conveyance. .

Means for Solving the Problems The object of the present invention is to provide a movable grip mounted on a fixed grip, which is biased by a spring and can be freely displaced upwardly toward an open position, and can also be rotated backwards or turned upside down. The movable gripping member is configured to be movable upward and downward relative to the fixed gripping member, and the tape is placed between the movable gripping member and the fixed gripping member without bending. In addition, the present invention is solved by a clamp chain for tape conveyance characterized in that a space is formed between both gripping members in the open position so that the tape can be easily attached without fear of damage to the tape member.

According to the present invention, the movable gripping portion is not only displaceable upward relative to the fixed gripping portion, but also upward and backward (sideways), so that the opening formed in the gripping portion can be enlarged. This allows the tape to be easily mounted on the clamp chain without damaging it.

In the present invention, the movement of the spring-biased movable gripping part is performed by a clamp opening row rotatably provided on the machine frame and whose outer peripheral portion engages with a slope formed on the movable gripping part. Advantageously, the lateral displacement of the movable gripping part is effected by means of a clamping release roller.

In this case, the movable grip part is also displaced upward by the engagement of the clamp release roller, and then displaced downward by the subsequent engagement.

In this case, the displacement of the movable gripping part is controlled by moving the chain tangentially on the clamp release roller, which is generally grooved so that it can rotate freely on the machine frame, but not be displaced.
This is also caused by the engagement of the lower part of the movable grip with the corresponding part of the clamp release roller, and the chain and roller continue to move tangentially to each other, causing the movable grip to move upward against the force of the spring. It moves and rotates at the same time.

Thus, with the above arrangement, the rotating part can be formed very simply by using a simple open roller, and the manufacturing costs can be reduced substantially. Also, there is no need to use complex coupling and release mechanisms to release the movable grip. Other preferred embodiments of the invention are set out in the dependent claims.

Examples Hereinafter, the present invention will be described with reference to the drawings.
IHG - Explain.

The crank chain 1 shown in FIG. 1 consists of a roller chain in which roller elements are connected to a phase n by link plates 11 in a known manner.

In the roller chain 10, the roller elements are connected to the link plate 1.
1, a pin 12 is provided to freely connect the two, and a grip portion 2 is attached to a pair of adjacent pins.

This gripping portion 2 constitutes the core of the present invention.

The gripping part 2 consists of an L-shaped bracket 3, and is connected to the roller chain 10 through a pair of adjacent pins 12 by riveting the pins 12.

FIG. 5 shows another L-shaped bracket 28 having a similar L-shaped configuration as shown in FIG. 1, but mounted in reverse. Such crambuthines are suitable for special uses.

The L-shaped bracket 3 is bent to the right in a single-letter shape, and the bent upper portion forms a support base 8. Further, @9 is formed at the front end of the support base 8, and the gripping tongues 7 of the gripping portion 2 biased by the spring engage with the grooves 9.

The gripping part 2 is displaceably and spring-loaded mounted on the L-shaped bracket 3 as explained below: on the lower side of the support base 8 on the L-shaped bracket 3 there is a guide part 4, preferably made of plastic. is fixed.

The guide portion 4 is made of a square plastic piece, and has pins 17 on both opposing sides.

Each pin 17 engages with a long hole 18 formed oppositely on both sides of the gripping part 2, and in this case, the gripping part 2 engages with a pair of long holes 18 in the upper part.
are held in precise alignment with each other.

The elongated holes 18 are formed in the arm portion 13 of the grip portion 2, and it is important to form them so that the long axis 19 of each elongated hole 18 is inclined with respect to the horizontal line 20.

With this configuration, as will be explained later, the gripping part 2 can be freely displaced upwardly and can also be tilted backwards, and when the gripping part is released, there is a particularly large receiving space between the gripping tongs 7 and the support base 8. A space or opening will be formed.

That is, as described above, the movable grip IfJ2 is mounted on the pin 17 of the guide portion 4 so as to be freely displaceable and rotatable at the same time.

In this case, as shown in FIG.
The lower end of the spring 6 engages with this component 14.

The spring 6 is preferably a helical compression spring, the other end of which is mounted on a pin 5 fixed to the guide 4.

As a result, the gripping part 2 is spring-biased so that the gripping tongs 7 are pressed against the support base 8, and the gripping edges 22 (see FIG. 4) on the gripping tongs 7 are formed on the support base 8. It is strongly connected to the engaging groove 9.

FIG. 6 shows a state in which the grip part 2 is displaced upward and rotated backward to form an opening 40 having a width 41.

From FIG. 6, a large opening 40 is formed by displacing and rotating the gripping tongs 7 upward and backward, and maI
Alternatively, it becomes very easy to attach the tape that you want to convey without deforming it.

As shown in FIG. 1, the arm portion 13 has a slope 15 extending rearward.
, and a base 16 is formed at the bottom thereof.

These effects will be explained in more detail later with reference to FIG.

FIG. 4 shows a preferred configuration of gripping edge 22.

In the illustrated example, three engaging surfaces 23°2 act independently.
It can be seen that 4.25 is formed.

The engagement surfaces are separated from each other by arcs 26 and 27,
As a result, the engagement surfaces 23-25 are pressed against the engagement groove 9 on the fixed support base 8 by the force of the spring 6.

The engagement surface is formed into three independently acting engagement surfaces 23-
By forming the gripping tongs 7 into 25 parts, the gripping tongs 7 installed on the pin 17 with an appropriate amount of play on the left and right can be attached to the screw 6.
It is automatically centered on the support base 8 by the force of
It becomes possible to apply a large pressing force to the tape to be conveyed.

The above explanation also applies to the embodiment shown in FIG.
In this embodiment, the L-shaped bracket 3 shown in FIGS. 1 to 3 is turned upside down and installed as a bracket 28. In this case as well, advantages in terms of tape transport can be obtained depending on the purpose.

FIGS. 6 and 7 are views showing the clamp chain 1 according to the present invention passed through the clamp open position.

In this clamp open position, the grip part 2 is opened as shown by arrow 42.

First, referring to FIG. 6, the clamp chain 1 is geometrically engaged with a chain drive gear 29, and the gear 29 is intermittently driven by a drive motor (not shown).

The clamp chain 1 is guided onto a clamp release roller 30 which is rotatably and positionally fixedly provided on a frame 30 so as to be in contact with the roller 30. At this time, the clamp release roller 30 rotates integrally with the chain drive gear 29.

On the side facing the roller chain, the roller 30 has a large-diameter disk-shaped portion 34, on the inside of which a first contact surface 35 is formed.

Contact surface 35 extends generally vertically and connects to a second contact surface 36, which is shown horizontally in the figure. This contact surface 36 acts as a shoulder of the row 530 that cooperates with the base 16 of the gripper 2.

The contact surface 36 lifts the grip part 2 in the direction shown by the arrow 43, but at this time, the elongated hole 1 formed diagonally as shown in FIG.
8, the gripping portion 2 is obliquely displaced in the direction of the longitudinal axis 19, and at the same time is tilted in the direction of the arrow 42 by the contact surface 35 formed on the outer circumference of the roller 30.

As the gripping part 2 moves in the direction of arrows 42 and 43, the gripping tongs 7 are disengaged from the gripper 9 and are displaced upward, and also move in the direction of arrow 42, in other words, backwards, and as described above. An opening 40 with a large width 47 results.

Furthermore, in order to prevent the gripping portion 2 from tilting in the direction of arrow 44 (FIG. 7) and centering it correctly, a plastic ring 32 is attached to the clamp release roller 30 as shown in FIG. This plastic ring 32 is the disk 3
1 in the axial direction of the roller 30.

A convex portion 33 is formed on the ring 32, extending upwardly and inwardly in the axial direction, and the side surface thereof is defined by a cutout portion 37. At this time, the notch 37 has a side surface 39 extending in the axial direction.
It is formed so as to be oblique to the bottom 38 of.

As can be seen in FIG. 7, the arms 13 extend along the sides 39 of the symmetrically formed recesses 37 opposite each other, so that in particular the gripping part 2 of the clamping chain is located at the arrow 4
Centered correctly in the direction indicated by .

The tip of the convex portion 33 does not necessarily have to be sharp as shown in FIG. 8, and may have a rectangular surface.

According to the clamp chain 1 according to the invention, the opening 40 can be set large due to the structure of the gripping part 2 provided on the bracket 3 or 28, and the cooperating part 31 formed on the clamp release roller 30 and the roller 30 .32 allows the clamp opening mechanism to be formed very simply and inexpensively, and provides a lamp opening mechanism with low wear and reliable operation.

[Brief explanation of the drawing]

Fig. 1 is a side view of the clamp chain according to the first embodiment of the present invention, Fig. 2 is a view of the clamp chain of Fig. 1 as seen from the direction of the arrow ■, and Fig. 3 is a side view of the clamp chain of Fig. Fig. 4 is a front view with the detailed shape of the engaging portion of the clamp portion reduced, and Fig. 5 is a view from Fig. 1 to Fig. 3 as seen from the forward direction.
A diagram showing a second embodiment corresponding to the clamp chain in the diagram,
Figure 6 is a side view showing the clamp part 2 lifted up by passing the clamp chain shown in Figure 1 over the clamp release roller, and Figure 7 is a side view showing the clamp chain 2 with the front disk removed. FIG. 6 is a view of the clamp chain shown in FIG. 6 as seen from the direction of the arrow (■), and FIG. 8 is a sectional view of the ring shown in FIGS. 6 and 7. 1... Clamp chain, 2... Gripping part, 3...
L-shaped bracket, 4... Guide portion, 7... Gripping tongs, 8... Support base, 9... Groove, 10... Roller chain, 11... Link plate, 12... Pin, 13... Arm part, 14... Component part, 15... Slope, 16... Base, 17... Pin, 18... Long hole,
19...Long axis, 22...Gripping edge, 23.24.2
5... Engaging portion, 26.27... Arc portion, 28... Bracket, 29... Chain drive gear, 30... Clamp release roller, 31... Disc, 32... Ring , 33... Convex portion, 34... Disk-shaped portion, 3
5... First contact surface, 36... Second contact surface, 40
...Opening portion, 41...Width, 42.43...Opening direction. Patent Applicant Karl F7 Britius Fl (34 IG 7

Claims (8)

[Claims] (1) A tape conveying chain that holds the tape in a movable grip and conveys it while applying force while aligning the shape, and the movable grip attached to the fixed grip is biased by a spring to the open position. The clamp part (2
), the movable gripping member (7) is configured to be movable upward and backward relative to the fixed gripping member, and the tape can be inserted between the movable gripping member and the fixed gripping member without bending and in an open position. A tape conveyance clamp chain characterized in that a space (40) is formed between both gripping members to allow the tape to be easily attached without fear of damage. (2) The clamp chain (1) has a bracket (3) mounted on the pin (12) and provided with a guide part (4) on the lower surface, and the guide part (4) has a clamp part (2). A long hole (
A pin (17) is formed to engage with the arm (13).
) is a pin (5) formed on the lower surface of the guide surface (4) at the bottom.
Clamp chain according to claim 1, characterized in that the end (14) is formed to engage a spring (6) abutting against the clamp chain. (3) The clamping part (2) is formed with gripping tongs (7) formed with clamping surfaces (23, 24, 25) connected by arcuate parts (26, 27). Clamp chain according to 1 or 2. (4) The bracket (3) is bent downward and has a clamping part (
3. The clamp chain according to claim 1 or 2, wherein the clamp chain 2) is engaged with the clamp chain. (5) The clamping part (2) is formed with a horizontal base (16) at the lower part and a slope (15) at the rear, and the base and the slope engage with the clamp release roller (30). The clamp chain according to item 1 or 2. (6) the clamp release roller (30) is a disc-shaped portion formed with a first curved contact surface (35) and another contact surface (36) that engages with the base (16) of the clamping part (2); The clamp chain according to claim 5, characterized in that it has: (7) The clamp release roller (30) has a ring (3) formed with a trapezoidal cutout (37) and a side surface (39).
2), and the ring (32) has a rearwardly inclined convex portion (33
), and the arm portion (1) of the clamp portion (2) extends along the convex portion.
7. The clamp chain according to claim 5, wherein the clamp chain 3) is engaged to prevent the clamp portion from tilting. (8) Clamp chain according to claim 1 or 2, characterized in that the bracket (3) has a support base (8) formed with a groove (9) for engaging with the gripping tongs (7).