EP1153833A1 - Apparatus for continuously separating strand material, in particular a strip of infusion bags - Google Patents

Abstract

The extruded material is divided by cross perforations into individual sections which are separated off by relative movement between the tongs (4) which grip the long sides of the section and the continuously rotating wheel (1) on which the tongs are mounted at the side. The tongs can swivel in the circumferential direction of the wheel and can be accelerated to produce the relative movement. The tongs have an upper and lower jaw (6, 7).

Description

The present invention relates to a device for continuous separation divided into individual strand sections by transverse perforation Strand materials, in particular in the context of the manufacture of infusion bags for making tea.

Methods and devices for the continuous production of infusion bags and corresponding infusion bags are known in numerous designs. It is used in the manufacture of infusion bags for the preparation of Tea uses different strand materials. With one of the known Executions are on a filter paper web individual substance quanta one leached substance and then a tube is formed, the one by cross seals in individual all-round, each one Chambers containing substance quantum is divided. The hose formation is done by overlapping folding of the filter paper web and closing by means of a longitudinal seam or by feeding a further filter paper web and Attach two longitudinal seams. In this way, a chamber strand formed from consecutively, by a transverse seam each consists of closed chambers containing a quantity of substance, the transverse seam being the back seam of one and the front seam of the subsequent chamber and one between the two seams Perforation at which the chambers separated during the course of the procedure become. The isolated chambers are finally on a carrier material attached, which is used for handling and hanging the infusion bag. For Formation of the carrier material forming the suspension of the infusion bag is used for this as part of a continuous production process uses a cross-perforated strand of carrier material, the strand sections of carrier material, the suspension of the infusion bags form.

The invention has for its object to provide a device for the continuous separation of strand materials of the type mentioned, which works reliably at high speed and in particular enables inexpensive production of infusion bags.

As a technical solution , the present invention provides a device of the type mentioned at the outset, with a continuously rotating wheel and with tongs arranged to the side of the wheel and movable relative to the wheel for gripping the longitudinal sides of a strand section to be separated from a strand at a predetermined position near the Perforation, the strand section being separable by moving the pliers relative to the wheel.

According to the strand material is the continuously rotating wheel fed on the long sides of pliers arranged on the side of the wheel seized and by moving the pliers relative to the wheel a strand section separated from the strand material. The strand section of the strand material is isolated by pulling apart on the perforation. Through the side of the wheel arranged pliers, the strand material is guided safely, so that the strand sections, in particular chambers of a chamber strand, do not to be damaged. The device according to the invention thus allows a separation of Strand sections from a strand material with high production output.

The wheel advantageously has recesses distributed over the circumference individual strand sections. The recesses are advantageous to the Adjusted strand sections and thus support the guidance of the strand. there the separation of strand sections is further specified. In another Embodiment of the invention, the recesses of the wheel Compressed air connection, via which the strand sections of the strand are optional can be fixed in the recesses by suction using vacuum or by Blow out can be squeezed out by overpressure. Be advantageous thereby in particular for the continuous separation of chambers Chamber strands for the production of infusion bags for the preparation of tea individual chambers of a chamber strand in the recesses of the wheel positioned and fixed. In addition, the substance quanta in the Chambers evenly distributed. The chambers are advantageously with or after separation from the chamber strand from the recesses of the Wheel pushed out. This ensures that the chambers are not in the Recesses of the wheel get stuck, so that the manufacturing process does not is hindered or disturbed. In a specific embodiment of the invention the wheel has and is twelve recesses distributed over the circumference of the wheel a pair of pliers assigned to each recess.

The pliers are advantageously pivotable in the direction of rotation of the wheel can be accelerated in order to generate the relative movement in the direction of rotation of the wheel, preferably via a curve control. The pliers are advantageously of this type controlled that front pliers in the direction of rotation of the wheel to be separated Strand section grab before the subsequent pliers in the direction of rotation grasp subsequent strand section of the strand, the front pliers in Direction of rotation of the wheel can only be accelerated when the rear pliers have already gripped the subsequent strand section of the strand.

In an advantageous embodiment of the invention, the pliers have a Upper jaw and a lower jaw with the lower jaw fixed and the Upper jaw can be swiveled in the radial direction of the wheel to close a pair of pliers is. The upper jaw is advantageous for closing a pair of pliers Curve control swiveling. By controlling the swivel and the Gripping movement of the pliers via a curve control is a precise cutting of the strand materials ensured.

Fig. 1

in einer perspektivischen Ansicht eine Vorrichtung zum kontinuierlichen Trennen eines Kammerstrangs zur Herstellung von Aufgußbeuteln zur Bereitung von Tee;

Fig. 2

die Vorrichtung gemäß Fig. 1 in einer Seitenansicht;

Fig. 3

eine Seitenansicht gemäß der Schnittlinie III-III nach Fig. 2

Fig. 4

eine Seitenansicht gemäß der Schnittlinie IV-IV und Fig. 2 und

Fig. 5

die Vorrichtung gemäß Fig. 1 in einer Draufsicht.

Further details, features and advantages of the invention are explained in more detail below with reference to the exemplary embodiment shown in the figures. Show:

Fig. 1

a perspective view of a device for the continuous separation of a chamber strand for the production of infusion bags for the preparation of tea;

Fig. 2

the device of Figure 1 in a side view.

Fig. 3

2 shows a side view according to section line III-III according to FIG. 2

Fig. 4

a side view along the section line IV-IV and Fig. 2 and

Fig. 5

1 in a plan view.

The device shown in Figures 1 to 5 is used for continuous Separation of chamber strands for the production of infusion bags for preparation of tea. Such chamber strands consist of one after the other contiguous, each closed by a transverse seam Chambers containing substance quantum, the transverse seam at the same time the rear cross seam is one and the front seam is the following chamber and a perforation between the two seams, on which the Chambers are separated during the manufacture of the tea bags. The The device has a continuously rotating wheel 1 with the circumference distributes recesses 2 for chambers forming individual strand sections Chamber strand on. To the side of the wheel 1 are relative to the wheel 1 on both sides movable pliers 3 for gripping the long sides of one Chamber strand to be separated at a predetermined position near the chamber Perforation arranged, the chamber by relative movement of the pliers 3rd to wheel 1 can be separated from the chamber strand. In Figures 1 to 5 is off For reasons of clarity, only one arranged on both sides of the wheel 1 Pliers 3 pair of pliers shown.

The tongs 3 are pivotally mounted on bearing bolts 5, the tongs 3 to generate the relative movement via a cam control in the direction of rotation of the wheel 1 can be pivoted and accelerated. These are the pliers 3, like shown in Figure 3, provided with a cam roller 12 which over a curve 11 or 11 'is pulled and so the pliers 3 through the curve 11 or 11' performs predetermined pivoting movement around the bearing pin 5. The curves 11 or 11 'have projections or Recesses 13, which accelerated via the roller 12 Generate pivotal movement of the pliers 3 in the direction of rotation U.

The pliers 3 each have one for closing the pliers 3 in the radial direction of the wheel 1 pivotable upper jaw 6 and a fixed lower jaw 7 on. To close the pliers 3, the upper jaw 6 is controlled by a cam pivotable. The upper jaw 6 of the pliers 3 is with an L-shaped Angle 15 connected, which is pivotally mounted about a bearing 14 and with a cam roller 9 is connected. The cam roller 9 of the pliers 3 is a Curve 8 performed perpendicular to the radial direction and perpendicular to Direction of rotation U of the wheel 1 has a projection or a recess 10 having. When the cam roller 9 passes this projection or this The upper jaw 6 is recessed over the angle 15 in the radial direction pivoted and can thus a chamber of a chamber strand from the Grab the long sides of the chamber. To return the swivel movement the upper jaw 6 or the angle 14 is the latter with a return spring 16 connected. The gripping movement of the pliers 3 is on the cam roller 9 and Curve 8 formed on the side of the cam roller is controlled such that in Direction of rotation U of the wheel 1 front pliers 3 the chamber to be separated of a chamber strand before the subsequent U in the direction of rotation Pliers grip the chamber below. The curve control for the Gripping movement is with the curve control for the Accelerating movement of the pliers in the direction of rotation of the wheel matched that the front pliers 3 in the direction of rotation of the wheel 1st can be accelerated when the rear pliers enter the subsequent chamber of the Grip chamber strand.

As can be seen from FIG. 4, they are over the circumference of the wheel 1 distributed recesses 2 for receiving a chamber of a chamber strand educated. The recesses 2 point in the circumferential direction U Limits 4 on. Adjacent recesses 2 share each have a boundary 4, which is trapezoidal in the radial direction has a tapering cross-section. Furthermore, the recesses 2 each have nine holes 17 through which a chamber of a chamber strand optionally fixable by suction in the recesses 2 or by blowing out of the recesses by means of overpressure 2 can be squeezed out. The bores 17 of the recesses 2 are one Compressed air connection 17 can be pressurized with negative pressure or positive pressure. In Figure 4 is the compressed air connection 18 for the application of negative pressure or positive pressure shown.

The device for separating a chamber shown in Figures 1 to 5 a chamber strand in the context of the production of infusion bags for Preparation of tea allows the chambers to be separated by pulling them apart of the chamber strand at the perforation. This is done by separating a chamber from the chamber strand the chamber strand to the continuously circulating, with Recesses 2 for individual chambers provided wheel 1 and the Long sides of the chamber to be separated from the chamber strand are from the side of the wheel 1 arranged pliers 3 gripped and by relative movement of the Pliers 3 to the wheel 1, the chamber separated from the chamber strand. The Device allows high machine cycle numbers, so that 800 to 1,500 Have infusion bags made per minute.

Reference list

1

wheel

2nd

Recess

3rd

Limitation

5

Bearing bolt

6

Upper jaw

7

Lower jaw

8th

Curve for gripping movement (closing the pliers)

9

Cam roller

10th

Projection / recess

11, 11 '

Relative motion curve (Swiveling the pliers in the direction of rotation of the wheel)

12th

Cam roller

13

Projection / recess

14

camp

15

angle

16

Return spring

17th

drilling

18th

Compressed air connection

U

Orbital direction

Claims (11)

Device for continuous separation by cross perforation in individual strand sections divided strand materials, especially in As part of the production of infusion bags for the preparation of tea, with a continuously rotating wheel (1) and with the side of the wheel (1) arranged, relative to the wheel (1) movable pliers (3) for gripping the Long sides of a strand section to be separated from a strand a predetermined position near the perforation, the Strand section by relative movement of the pliers (3) to the wheel (1) is separable. Device according to claim 1, characterized in that the tongs (3) can be pivoted in the direction of rotation of the wheel (1). Device according to claim 1 or claim 2, characterized in that the tongs (3) for generating the relative movement can be accelerated in the direction of rotation of the wheel (1). Device according to claim 3, characterized in that the tongs (3) can be accelerated by means of a cam control. Device according to one of claims 1 to 4, characterized in that the pliers (3) have an upper jaw (6) and a lower jaw (7), the lower jaw (7) being fixed and the upper jaw (6) for closing a pair of pliers (3 ) is pivotable in the radial direction of the wheel (1). Device according to claim 5, characterized in that the upper jaw (6) can be pivoted via a cam control to close a pair of pliers (3). Device according to one of claims 1 to 6, characterized in that the wheel (1) has recesses (2) distributed over the circumference for individual strand sections. Apparatus according to claim 7, characterized in that the recesses (2) have a compressed air connection, via which the strand sections of the strand can be fixed in the recesses (2) either by suction by means of vacuum or can be pressed out by blowing out by means of pressure. Apparatus according to claim 7 or claim 8, characterized in that the wheel (1) has twelve recesses (2) distributed over the circumference of the wheel. Device according to one of claims 7 to 9, characterized in that a pair of pliers is assigned to each recess (2). Device according to one of claims 1 to 10, characterized in that the tongs (3) are controlled such that front tongs (3) grip the strand section to be severed in the direction of rotation of the wheel (1) before the tongs (3) following in the direction of rotation grasp the subsequent strand section of the strand, the front tongs (3) being accelerated in the direction of rotation of the wheel (1) when the rear tongs (3) grip the subsequent strand section of the strand.

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