A separate hot plate copper contact structure

Abstract

The present invention relates to the field of packaging equipment design, and in particular to a separate hot plate copper contact structure, wherein a copper electric contact unit comprises an upper copper top column, a lower copper moving guide column, a spring and a terminal, the upper copper top column is fixed on the wall of a vacuum chamber horizontally, the outer end of the upper copper top column outside the vacuum chamber is fixed with a terminal, an insulating fixed block is fixed on the hot plate inside the vacuum chamber, a limiting hole is provided on the fixed block, a spring is arranged inside the limiting hole, one end of the lower copper moving guide column abuts against the end of the spring, and the other end of the lower copper moving guide column abuts against the inner end of the upper copper top column, there are two copper electric contact units, there are two limiting holes, a heating tube is connected between the springs of the two copper electric contact units, the heating tube is arranged inside the hot plate, the terminal of the two copper electric contact units is connected to a power supply, and during the movement of the hot plate, the lower copper moving guide column is always abutted and connected with the upper copper top column by relying on the elastic force of the spring, the vacuum chamber and the hot plate are easy to disassemble and have a long service life.

Description

Technical Field

[0001] The invention relates to the field of packaging equipment design, and in particular to a separate hot plate copper contact structure. Background Art

[0002] Modified atmosphere packaging machines are generally used for food preservation. They extract the air from the trays of packaged food, and then fill them with different protective gases according to different types of food to achieve the purpose of packaging food. The copper contacts of the hot plate in existing modified atmosphere packaging machines use traditional wire nut connection methods. After long-term operation of the equipment, the insulation layer is prone to aging, wire curling, signal interference and other problems; in addition, the existing hot plate wire connection structure leads to complex internal space, low efficiency in maintenance and replacement of the hot plate, and inconvenient disassembly. Summary of the invention

[0003] The purpose of the present invention is to overcome the defects of the prior art and provide a separate hot plate copper contact structure which is easy to disassemble and has a long service life.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a separate hot plate copper contact structure, including a copper contact unit, the copper contact unit including an upper copper top column, a lower copper moving guide column, a spring and a terminal, the upper copper top column is cross-fixed on the wall of the vacuum chamber, the outer end of the upper copper top column outside the vacuum chamber is fixed with the terminal, an insulating fixed block is fixed on the hot plate inside the vacuum chamber, a limiting hole is provided on the fixed block, the spring is arranged inside the limiting hole, one end of the lower copper moving guide column abuts against the end of the spring, and the other end of the lower copper moving guide column abuts against the inner end of the upper copper top column, there are two copper contact units, there are two limiting holes, a heating tube is connected between the springs of the two copper contact units, the heating tube is arranged inside the hot plate, the terminal of the two copper contact units is connected to a power supply, and during the working and moving process of the hot plate, the elastic force of the spring is relied on to make the lower copper moving guide column always abut and connect with the upper copper top column.

[0005] Furthermore, the outer ends of the two copper contact units are covered with sealing covers, and the sealing covers are fixed on the vacuum chamber.

[0006] Preferably, the outer end of the limiting hole is closed, the lower copper moving guide column and the upper copper top column are both T-shaped, the T-end of the lower copper moving guide column is inserted into the interior of the limiting hole and forms an anti-slip limit with the closed end of the limiting hole, and the other end of the lower copper moving guide column rests against the T-end of the upper copper top column.

[0007] Furthermore, two fixing grooves are provided on the surface of the ironing board attached to the fixing block, copper sheets are placed in the two fixing grooves respectively, the end of the spring rests on the copper sheets, and the heating tube is connected between the two copper sheets.

[0008] Preferably, the upper copper top column freely passes through the through hole on the wall of the vacuum chamber, and there is a gap between the outer peripheral surface of the upper copper top column and the inner wall of the through hole. The outer end of the upper copper top column is sleeved with an insulating outer fixing sleeve, and the outer fixing sleeve is fixed to the outer wall of the wall. The inner end of the upper copper top column is sleeved with an insulating inner fixing sleeve, and the inner fixing sleeve is fixed to the inner wall of the wall. Sealing is achieved between the inner fixing sleeve and the inner wall of the vacuum chamber, and between the inner fixing sleeve and the outer peripheral surface of the upper copper top column through sealing rings respectively.

[0009] Furthermore, the outer fixing sleeve is in the shape of a ring and is fixed by pressing with a nut, the inner fixing sleeve is in the shape of a ring, a limiting groove is provided in the middle of one side of the inner fixing sleeve and the T-end of the upper copper top column is against the limiting groove, the middle of the other side of the inner fixing sleeve protrudes outward to form an annular flange, an installation slot is provided on the inner wall of the vacuum chamber, a through hole on the wall of the vacuum chamber is connected to the bottom of the slot of the installation slot, and the annular flange is inserted between the inner peripheral wall of the slot of the installation slot and the outer peripheral surface of the upper copper top column.

[0010] Beneficial effects: During actual use, the power supply is supplied, and the two copper contact units and the heating tube form a closed circuit. The heating tube is used to heat the ironing plate. Before the ironing plate moves, the lower copper movable guide column abuts against the end of the upper copper top column and the spring is compressed. When the ironing plate moves along the guide rail to iron and seal the packaging box, the ironing plate moves away from the upper copper top column. At this time, the compression spring performs a reset movement so that the lower copper movable guide column always abuts against the end of the upper copper top column to ensure the connectivity of the circuit. When the equipment needs to be disassembled for maintenance, because the lower copper movable guide column and the upper copper top column are contact-connected and there are no other connecting parts, the lower copper movable guide column and the upper copper top column can be directly removed when disassembled. This makes it particularly convenient to disassemble the vacuum chamber and the ironing plate. The conductive structure of the copper contact unit is used to replace the traditional wire to avoid the problems of insulation aging, wire curling, signal interference, etc., which greatly improves the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a cross-sectional view of the present invention;

[0012] Figure 2 yes Figure 1 A magnified view of part A;

[0013] Figure 3 is a cross-sectional view of the internal fixation sleeve. DETAILED DESCRIPTION

[0014] Combine the following Figure 1-3 , the present invention is further described.

[0015] A separate hot plate copper contact contact structure includes a copper contact unit, the copper contact unit includes an upper copper top column 10, a lower copper moving guide column 20, a spring 30 and a terminal 40, the upper copper top column 10 is fixed to the wall of a vacuum chamber 50 across, the outer end of the upper copper top column 10 located outside the vacuum chamber 50 is fixed with the terminal 40, an insulating fixing block 70 is fixed on the hot plate 60 located inside the vacuum chamber 50, a limiting hole is provided on the fixing block 70, the spring 30 is arranged inside the limiting hole, and the lower copper moving guide column 20 is arranged inside the limiting hole. One end of the moving guide column 20 abuts against the end of the spring 30, and the other end of the lower copper moving guide column 20 abuts against the inner end of the upper copper top column 10. There are two copper contact units and two limiting holes. A heating tube 80 is connected between the springs 30 of the two copper contact units. The heating tube 80 is arranged inside the ironing plate 60. The wiring terminals 40 of the two copper contact units are connected to the power supply. During the working and moving process of the ironing plate 60, the elastic force of the spring 30 is used to keep the lower copper moving guide column 20 always abutted and connected with the upper copper top column 10. During actual use, the power supply is supplied, and the two copper contact units and the heating tube 80 form a closed circuit. The heating tube 80 is used to heat the ironing plate 60. Before the ironing plate 60 moves, the lower copper movable guide post 20 abuts against the end of the upper copper top post 10 and the spring 30 is compressed. When the ironing plate 60 moves along the guide rail to iron and seal the packaging box, the ironing plate 60 moves away from the upper copper top post 10. At this time, the compression spring 30 performs a reset movement so that the lower copper movable guide post 20 always abuts against the end of the upper copper top post 10 to ensure the connection of the circuit. When the equipment needs to be disassembled for maintenance, because the lower copper movable guide post 20 and the upper copper top post 10 are contact-connected and there are no other connecting parts, the lower copper movable guide post 20 and the upper copper top post 10 can be directly removed when disassembling. In this way, it is particularly convenient to disassemble the vacuum chamber 50 and the ironing plate 60. The conductive structure of the copper contact unit is used to replace the traditional wire to avoid the problems of insulation layer aging, wire curling, signal interference, etc., which greatly improves the service life.

[0016] Furthermore, the outer ends of the two copper contact units are covered with sealing covers 90, and the sealing covers 90 are fixed on the vacuum chamber 50. The sealing covers 90 play the role of aesthetics and preventing electric shock.

[0017] Preferably, the outer end of the limit hole is closed, the lower copper moving guide post 20 and the upper copper top post 10 are both T-shaped, the T-end of the lower copper moving guide post 20 is inserted into the interior of the limit hole and forms an anti-dropout limit with the closed end of the limit hole, and the other end of the lower copper moving guide post 20 abuts against the T-end of the upper copper top post 10. The T-end of the copper moving guide post 20 is inserted into the interior of the limit hole and forms an anti-dropout limit with the closed end of the limit hole, and the anti-dropout limit can prevent the lower copper moving guide post 20 from detaching from the limit hole, and during the elastic resetting process of the spring 30, the T-end of the lower copper moving guide post 20 moves in the limit hole.

[0018] Furthermore, two fixing grooves are provided on the surface of the ironing plate 60 attached to the fixing block 70, and copper sheets 100 are placed in the two fixing grooves respectively, and the ends of the spring 30 are against the copper sheets 100, and the heating tube 80 is connected between the two copper sheets 100. The contact area between the copper sheet 100 and the spring 30 is large, which is convenient for electrical conduction, and the heating tube 80 can be designed to be U-shaped for easy connection.

[0019] Preferably, the upper copper top column 10 freely passes through the through hole on the wall of the vacuum chamber 50, and there is a gap between the outer peripheral surface of the upper copper top column 10 and the inner wall of the through hole. The outer end of the upper copper top column 10 is sleeved with an insulating outer fixing sleeve 110, and the outer fixing sleeve 110 is fixed to the outer wall of the wall. The inner end of the upper copper top column 10 is sleeved with an insulating inner fixing sleeve 120, and the inner fixing sleeve 120 is fixed to the inner wall of the wall. The inner fixing sleeve 120 and the inner wall of the vacuum chamber 50, and the inner fixing sleeve 120 and the outer peripheral surface of the upper copper top column 10 are sealed by sealing rings respectively. There is a gap between the outer peripheral surface of the upper copper top column 10 and the inner wall of the through hole of the vacuum chamber 50 to prevent the vacuum chamber 50 from conducting electricity.

[0020] Further, the outer fixing sleeve 110 is annular and is fixed by a nut, the inner fixing sleeve 120 is annular, a limiting groove 121 is provided in the middle of one side of the inner fixing sleeve 120, and the T-shaped end of the upper copper top column 10 is against the limiting groove 121, and the middle of the other side of the inner fixing sleeve 120 protrudes outward to form an annular flange 122, an installation slot is provided on the inner wall of the vacuum chamber 50, a through hole on the wall of the vacuum chamber 50 is connected to the bottom of the slot of the installation slot, and the annular flange 122 is inserted between the inner peripheral wall of the slot of the installation slot and the outer peripheral surface of the upper copper top column 10. The annular flange 122 not only increases the sealing effect of the inner fixing sleeve 120, but also can prevent the upper copper top column 10 from shaking, and prevent the upper copper top column 10 from contacting the vacuum chamber 50 and causing the vacuum chamber 50 to conduct electricity.

[0021] It should be understood that the specific embodiments described above are only used to explain the present invention, and are not used to limit the present invention. Obvious changes or modifications derived from the spirit of the present invention are still within the protection scope of the present invention.

Claims

1. A separate hot plate copper contact structure, characterized in that: The invention comprises a copper contact unit, which comprises an upper copper top column (10), a lower copper moving guide column (20), a spring (30) and a connecting terminal (40). The upper copper top column (10) is fixed to the wall of a vacuum chamber (50) across the upper copper top column (10). The connecting terminal (40) is fixed to the outer end of the upper copper top column (10) outside the vacuum chamber (50). An insulating fixing block (70) is fixed to a hot plate (60) inside the vacuum chamber (50). The fixing block (70) is provided with a A limiting hole is provided, a spring (30) is arranged inside the limiting hole, one end of the lower copper movable guide column (20) abuts against the end of the spring (30), and the other end of the lower copper movable guide column (20) abuts against the inner end of the upper copper top column (10), there are two copper contact units, there are two limiting holes, a heating tube (80) is connected between the springs (30) of the two copper contact units, the heating tube (80) is arranged inside the ironing plate (60), and the connection terminals (40) of the two copper contact units are connected When the power supply is connected, the lower copper movable guide post (20) is always in contact with the upper copper top post (10) by the elastic force of the spring (30) during the movement of the ironing plate (60). The outer ends of the two copper contact units are covered with a sealing cover (90), which is fixed on the vacuum chamber (50). The outer end of the limit hole is in a closed shape. The lower copper movable guide post (20) and the upper copper top post (10) are both T-shaped. The T-shaped end of the lower copper movable guide post (20) is inserted into the limit hole. The inside of the positioning hole and the closing end of the limiting hole form an anti-dropping limiter, the other end of the lower copper moving guide column (20) abuts against the T-shaped end of the upper copper top column (10), and two fixing grooves are provided on the surface of the ironing plate (60) abutting against the fixing block (70), and copper sheets (100) are placed in the two fixing grooves respectively, and the end of the spring (30) abuts against the copper sheet (100), and a heating tube (80) is connected between the two copper sheets (100), and the heating tube (80) is U-shaped.

2. The separate hot plate copper contact structure according to claim 1, characterized in that: The upper copper top column (10) freely passes through a through hole on the wall of the vacuum chamber (50); a gap exists between the outer peripheral surface of the upper copper top column (10) and the inner wall of the through hole; an insulating outer fixing sleeve (110) is sleeved on the outer end of the upper copper top column (10); the outer fixing sleeve (110) is fixed to the outer wall of the wall; an insulating inner fixing sleeve (120) is sleeved on the inner end of the upper copper top column (10); the inner fixing sleeve (120) is fixed to the inner wall of the wall; sealing is achieved between the inner fixing sleeve (120) and the inner wall of the vacuum chamber (50), and between the inner fixing sleeve (120) and the outer peripheral surface of the upper copper top column (10) by sealing rings.

3. The separate hot plate copper contact structure according to claim 2, characterized in that: The outer fixing sleeve (110) is annular and is fixed by a nut, the inner fixing sleeve (120) is annular, a limiting groove (121) is provided in the middle of one side of the inner fixing sleeve (120), and the T-shaped end of the upper copper top column (10) abuts against the limiting groove (121), the middle of the other side of the inner fixing sleeve (120) protrudes outward to form an annular flange (122), an installation slot is provided on the inner wall of the vacuum chamber (50), a through hole on the wall of the vacuum chamber (50) is connected to the bottom of the slot of the installation slot, and the annular flange (122) is inserted between the inner peripheral wall of the slot of the installation slot and the outer peripheral surface of the upper copper top column (10).

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