Apparatus for severing data-bearing tapes which are dispensed by a machine

• US 4,949,606 A
• Filed: 11/22/1988
• Issued: 08/21/1990
• Est. Priority Date: 12/05/1987
• Status: Expired due to Term

• Current Assignee: Hengstler GmbH (Fortive Corp.)
• Original Assignee: Hengstler GmbH (Fortive Corp.)
• Inventors: Pfeiffer, Horst
• Primary Examiner(s): Yost, Frank T.
• Assistant Examiner(s): Rada, Rinaldi
• Application Number:
  US07/275,528
• Time in Patent Office: 637 Days
• Field of Search: 83/341, 83/342, 83/349, 83/335, 83/355, 83/356.3, 83/672, 83/673, 83/674, 83/596, 83/859, 83/860, 83/69, 83/72
• US Class Current: 83/69
• CPC Class Codes: B26D 1/385 for thin material, e.g. for sheets, strips or the like
• CPC Class Codes: B26D 7/00 Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting cutters B26D1/00; arrangements for guiding hand cutting tools B26B29/06; punching tools or dies, cutting-out knives or dies B26F
• CPC Class Codes: Y10T 83/101 With stopping means effective on completion of predetermined number of tool cycles
• CPC Class Codes: Y10T 83/4804 Single tool action drive
• CPC Class Codes: Y10T 83/4827 With helical cutter blade
• CPC Class Codes: Y10T 83/4847 With cooperating stationary tool
• CPC Class Codes: Y10T 83/8796 Progressively cutting
• CPC Class Codes: Y10T 83/9394 Helical tool
• CPC Class Codes: Y10T 83/9396 Shear type
• CPC Class Codes: Y10T 83/96 Guard

Abstract

An apparatus for severing data-bearing tapes which are dispensed by a machine, which apparatus comprises an electric motor for driving a double-edged helical rotary cutter for cooperating with a spring-loaded stationary cutter, comprises an angle-section carrier, which is formed on the outside of one leg of said carrier with a concave recess extending along said one leg and receiving said rotary cutter, whereas the second leg of the carrier constitutes a bottom for mounting the motor, which is disposed in the spaced defined between the two legs, and the carrier is adapted to be cut to a length which matches the width of the tape to be severed.

Claims

1. In an apparatus for severing data-bearing tapes, comprising,

a helical rotary cutter,

a stationary cutter for cooperating with said rotary cutter to sever said tape,

spring means for urging said stationary cutter against said rotary cutter, and

an electric motor for rotating said rotary cutter,

the improvement residing in that

an angle-section carrier having first and second legs is provided, said first leg is provided with a concave recess extending longitudinally along said carrier,

means for mounting said rotary cutter in said recess,

said electric motor being mounted on said second leg,

a first covering hood is mounted on said carrier and covers said rotary and stationary cutters,

a second covering hood is mounted on said carrier and covers said electric motor, and

said means for mounting said rotary cutter includes a pair of spaced end walls, each of said end walls is provided with at least one pin for retaining said first covering hood.

2. The improvement set forth in claim 1, wherein

said first covering hood defines with said carrier a cutter chamber containing said rotary and stationary cutters, and

said second covering hood defines with said carrier a motor chamber, which accommodates said motor and is entirely separated from said cutter chamber.

3. The improvement set forth in claim 2, wherein said motor chamber contains a transmission operatively connecting said motor to said rotary cutter and also contains a control device for controlling the energization of said motor in response to the rotation of said rotary cutter.

4. The improvement set forth in claim 1, wherein

said first covering hood has spaced-apart first and second longitudinal side edges,

said first side edge defines with a portion of said carrier a first gap for receiving a tape to be severed and

said second side edge defines with a portion of the second covering hood, a second gap for dispensing a length of tape which has been severed.

5. The improvement set forth in claim 1, wherein

a transmission operatively connecting said electric motor to said rotary cutter is disposed between said electric motor and one of said end walls and has a shaft which is rotatably mounted in said one end wall,

said rotary cutter is rotatably mounted between both end walls.

6. The improvement set forth in claim 5, wherein

the other of said end walls is screw-connected to said carrier and is spaced from said electric motor, and

a control device, responsive to the rotation of said rotary cutter, is mounted on said other end wall.

7. The improvement set forth in claim 1, wherein

said carrier, said rotary cutter, said fixed cutter and said recess extending longitudinally between the spaced end walls and are spaced from said electric motor,

said spaced end walls include first and second end walls,

the first end wall is screw-connected to said carrier and is spaced from said electric motor in direction,

a transmission operatively connecting said electric motor to said rotary cutter is disposed between said electric motor and said first end wall and has a shaft which is rotatably mounted in said first end wall,

the second end wall is screw-connected to said carrier and is spaced from said electric motor in a second longitudinal direction, opposite of said first direction and

a control device, responsive to the rotation of said rotary cutter, is mounted on said second end wall.

8. The improvement set forth in claim 7, wherein said control device comprises a control line connected to said electric motor, a switch connected to said control line and a follower lever for controlling said switch in response to the rotation of said rotary cutter.

9. The improvement set forth in claim 8, wherein

said stationary cutter is adjustable end

a pin mounted on an eccentric for adjusting the angular orientation of said stationary cutter relative to said rotary cutter is mounted on said second end wall.

10. The improvement set forth in claim 7, wherein

a split pin is mounted on one of said end walls and

said spring means comprise a torsion spring connected to said split pin and to said stationary cutter.

11. The improvement set forth in claim 1 as applied to a severing apparatus which is adapted to be fixed to a carrying structure, wherein

said carrier is formed on its underside with a T-section longitudinal groove for slidably receiving nuts for fixing said carrier to said carrying structure.

12. The improvement set forth in claim 11 as applied to a severing apparatus which is adapted to be associated with a structure having a guiding surface for guiding a length of tape which has been severed,

said first leg is formed with a beveled longitudinal edge face which faces away from said second leg,

said edge face defines a portion of a receiving gap for receiving a length of tape which has been fed thereto, and

said carrier is adapted to be secured to said carrying structure to receive said tape.

13. The improvement set forth in claim 1, wherein

said rotary cutter consists of a steel bar which has two helical knife edges,

first and second stub shafts are carried by said rotary cutter and extend therefrom in first and second directions, respectively,

a gear is non-rotatably connected to said first stub shaft,

a transmission is provided for operatively connecting said electric motor to said gear, and

a guiding ring and a camwheel for actuating a switch controlling the energization of said motor in response to the rotation of said rotary cutter are mounted on said second stub shaft.

14. The improvement set forth in claim 1, wherein

said rotary cutter comprises first and second knife edges,

said stationary cutter is adjustably mounted and defines a stationary knife edge for cooperating with said first and second knife edges,

one end of said stationary cutter is supported by a retaining pin mounted on an eccentric rotatably mounted in one of said end walls,

said spring means comprise a torsion spring, which is connected to the other end of said stationary cutter supported by another retaining pin mounted in said other of said end walls, and

said eccentric is rotatable to adjust by means of said torsion spring said stationary cutter to a position in which said stationary knife edge has a desired angular orientation relative to said first and second knife edges.