Timing adjusting device for packaging machines

• US 4,545,174 A
• Filed: 04/19/1983
• Issued: 10/08/1985
• Est. Priority Date: 04/19/1982
• Status: Expired due to Fees

• Current Assignee: Fuji Machinery Co., Ltd. (Subaru Corp.)
• Original Assignee: Fuji Machinery Co., Ltd. (Subaru Corp.)
• Inventors: Seko, Kiyoshi
• Primary Examiner(s): Vlachos, Leonidas
• Application Number:
  US06/486,355
• Time in Patent Office: 903 Days
• Field of Search: 53/75, 53/51, 53/507, 364/561, 318/569
• US Class Current: 53/51
• CPC Class Codes: B65B 41/18 Registering sheets, blanks, or webs

Abstract

A packaging machine wraps an article with a web of patterned wrapping paper as it is continuously formed into a sleeve, and seals or cuts or both seals and cuts the front and rear ends of a sleeve enclosure in which the article is wrapped. A timing adjustment device for the packaging machine includes input means for setting an operating pitch of a seal cutter or the like and a thickness of the article, a processor for computing an initial angle or position of the seal cutter or the like based on the settings for the operating pitch and the article thickness to establish timing of operation of the seal cutter or the like with respect to the article fed by a feed conveyor and the patterned wrapping paper and for issuing a control signal based on the result of computation, and a control motor for adjusting a timing mechanism for the seal cutter or the like based on the control signal.

Claims

1. A timing adjustment device for a packaging machine which includes a feed conveyor for articles to be packaged, a web of patterned wrapping paper for packaging said articles, and a seal cutter for sealing and cutting the packages, comprising:

(a) input means for setting as digital signals values of a cutting pitch of said seal cutter and a thickness of said articles to be wrapped by said web of patterned wrapping paper;

(b) a memory for storing dimensional and numerical data including a dimension from said feed conveyor to said seal cutter, a dimension from a registration mark pointer to said seal cutter, the cutting pitch, the article thickness, and an angle of said seal cutter;

(c) a processor for reading said dimensions and numerical values from said memory, computing an initial angle to derive timing of operation of said seal cutter with respect to said articles fed by said feed conveyor and said patterned wrapping paper, and feeding a control signal based on the result of said computation to a motor drive control unit;

(d) a first control motor coupled through a first differential gear mechanism to a drive system for said seal cutter for adjusting the initial angle of said seal cutter with respect to said feed conveyor under the control of said motor drive control unit;

(e) a second control motor connected through a second differential gear mechanism to a timing mechanism for adjusting timing of operation of said seal cutter with respect to said patterned wrapping paper for adjusting a phase of said timing mechanism with said seal cutter serving as a reference under the control of a signal from said motor drive control unit; and

(f) a pulse generator for detecting an angular displacement of the drive system for said timing mechanism and said seal cutter and delivering a detected signal to said processor.

4. A timing adjustment device according to claim 1, including a display unit for displaying settings entered into said processor and operation requests.

2. A timing adjustment device for a packaging machine which includes a feed conveyor for articles to be packaged, a web of patterned wrapping paper for packaging said articles, and a sealer for sealing the packages, comprising:

(a) input means for setting as digital signals values of a sealing pitch of said sealer and a thickness of said articles to be wrapped by said web of patterned wrapping paper;

(b) a memory for storing dimensional and numerical data including a dimension from said feed conveyor to said sealer, a dimension from a registration mark pointer to said sealer, the sealing pitch, the article thickness, and an angle of said sealer;

(c) a processor for reading said dimensions and numerical values from said memory, computing an initial angle to derive timing of operation of said sealer with respect to said articles fed by said feed conveyor and said patterned wrapping paper, and feeding a control signal based on the result of said computation to a motor drive control unit;

(d) a first control motor coupled through a first differential gear mechanism to a drive system for said sealer for adjusting the initial angle of said sealer with respect to said feed conveyor under the control of said motor drive control unit;

(e) a second control motor connected through a second differential gear mechanism to a timing mechanism for adjusting timing of operation of said sealer with respect to said patterned wrapping paper for adjusting a phase of said timing mechanism with said sealer serving as a reference under the control of a signal from said motor drive control unit; and

(f) a pulse generator for detecting an angular displacement of the drive system for said timing mechanism and said sealer and delivering a detected signal to said processor.

5. A timing adjustment device according to claim 2, including a display unit for displaying settings entered into said processor and operation requests.

3. A timing adjustment device for a packaging machine which includes a feed conveyor for articles to be packaged, a web of patterned wrapping paper for packaging said articles, and a cutter for cutting the packages, comprising:

(a) input means for setting as digital signals values of a cutting pitch of said cutter and a thickness of said articles to be wrapped by said web of patterned wrapping paper;

(b) a memory for storing dimensional and numerical data including a dimension from said feed conveyor to said cutter, a dimension from a registration mark pointer to said cutter, the cutting pitch, the article thickness, and an angle of said cutter;

(c) a processor for reading said dimensions and numerical values from said memory, computing an initial angle to derive timing of operation of said cutter with respect to said articles fed by said feed conveyor and said patterned wrapping paper, and feeding a control signal based on the result of said computation to a motor drive control unit;

(d) a first control motor coupled through a first differential gear mechanism to a drive system for said cutter for adjusting the initial angle of said cutter with respect to said feed conveyor under the control of said motor drive control unit;

(e) a second control motor connected through a second differential gear mechanism to a timing mechanism for adjusting timing of operation of said cutter with respect to said patterned wrapping paper for adjusting a phase of said timing mechanism with said cutter serving as a reference under the control of a signal from said motor drive control unit; and

(f) a pulse generator for detecting an angular displacement of the drive system for said timing mechanism and said cutter and delivering a detected signal to said processor.

6. A timing adjustment device according to claim 3, including a display unit for displaying settings entered into said processor and operation requests.