HK1124013A - Improved structure of a sealing machine electro-thermal base - Google Patents

Abstract

The invention relates to an improved structure of electrothermal base of a sealing machine, comprising a heat-resistance insulated base and a electrothermal part; wherein, the heat-resistance insulated base is provided with a left side part, a middle convex part and a right side part; when the pressing part of the sealing machine is pressed downwards, the pressing part can contact with a middle convex part. The electrothermal part comprises at least two electrothermal wires which are partitioned mutually; two ends of the electrothermal wires are electrically connected with a left conductive fixed part and a right conductive fixed part respectively; the electrothermal wire, the left conductive fixed part and the right conductive fixed part are respectively positioned at the middle convex part, the left side part and the right side part of the heat-resistance insulated base.; The improved structure of a sealing machine electrothermal base improves the sealing reliability and reinforces the durability of sealing parts to be sealed in severe working environment.

Description

Improved structure of electric heating seat of sealing machine

Technical Field

The present invention relates to an improved structure of a sealing machine electric heating seat, and more particularly to an improved structure of a sealing machine electric heating seat with higher sealing reliability and improved sealing durability.

Background

There are a number of portable small sealers available on the market. The known electric heating sealing machine is generally provided with a base, a heating mechanism and a pressing part, wherein the heating mechanism is provided with an electric heating wire, and the temperature of the electric heating wire is increased after the electric heating wire is electrified so as to provide the heat energy temperature for sealing the plastic bag opening.

The conventional electric heating sealing machine mainly uses a single electric heating wire to seal the bag to be sealed. However, in some harsh working environments where the sealed bag is placed, for example, when the sealed bag is placed in a way of being thrown away to cause impact, the single seal is slightly weak in ensuring the sealing reliability, because if the sealed state of the bag is very tight, even a slight throwing motion may cause the impact to break the single seal, thereby allowing the contents of the bag to fall out.

Disclosure of Invention

The invention aims to provide an improved structure of an electric heating seat of a sealing machine, which has better use effect and wider application.

In order to achieve the above object, the present invention provides an improved structure of an electric heating seat of a sealing machine, which comprises:

a heat-resistant insulating base having a left side portion, a middle protrusion portion, and a right side portion which are adjacent in sequence; and

an electric heating part; wherein:

the electric heating part comprises at least two electric heating wires which are separated by a preset distance, two ends of each electric heating wire are respectively and electrically connected with a left conductive fixing part and a right conductive fixing part, and the left conductive fixing part and the right conductive fixing part are respectively fixed on the left side part and the right side part of the heat-resistant insulating base part, so that the electric heating wires are positioned on the middle protruding part of the heat-resistant insulating base part.

The improved structure of the electric heating sealing machine is characterized in that the left conductive fixing piece and the right conductive fixing piece are C-shaped cross-section conductive fixing pieces and are respectively clamped on the left side part and the right side part of the heat-resistant insulating base part.

The improved structure of the electric heating seat of the sealing machine is characterized in that each C-shaped section conductive fixing piece comprises at least two fixing grooves for the corresponding insertion of at least two electric heating wires.

The improved structure of the electric heating seat of the sealing machine is characterized in that the left conductive fixing piece and the right conductive fixing piece are rivets, and the left side part and the right side part are both provided with rivet holes for accommodating the corresponding rivets.

The improved structure of the electric heating seat of the sealing machine is characterized in that two ends of the at least two electric heating wires are respectively welded and fixed on the nail heads of the corresponding rivets.

The improved structure of the electric heating seat of the sealing machine is characterized in that the rivets are respectively clamped and fixed at two ends of the at least two electric heating wires in the rivet holes of the left side part and the right side part of the heat-resistant insulating base part.

The improved structure of the electric heating seat of the sealing machine is characterized in that a heat-resistant electric insulation sheet covers the at least two electric heating wires.

The improved structure of the electric heating seat of the sealing machine is characterized in that the heat-resistant electric insulation sheet and/or the other heat-resistant electric insulation sheet is made of Teflon material.

The improved structure of the electric heating seat of the sealing machine is characterized in that another heat-resistant electric insulation sheet is padded below the at least two electric heating wires.

The improved structure of the electric heating seat of the sealing machine is characterized in that the heat-resistant electric insulation sheet and/or the other heat-resistant electric insulation sheet is made of Teflon material.

The improved structure of the electric heating seat of the sealing machine is characterized in that the left conductive fixing piece and the right conductive fixing piece are elastic pieces, the left side part and the right side part are both provided with a through hole, and the elastic pieces are both expanded and fixed in the corresponding through holes.

The improved structure of the electric heating seat of the sealing machine is characterized in that the middle protruding part is concavely provided with a positioning notch corresponding to the at least two electric heating wires so as to position the at least two electric heating wires.

The improved structure of the electric heating seat of the sealing machine comprises a compression spring which is arranged at the bottom of the heat-resistant insulating base.

The improved structure of the electric heating seat of the sealing machine is characterized in that the heat-resistant insulating base is made of ceramic materials.

The present invention can produce several sealing ports in the object through once pressing operation, and this results in high shock resistance and raised sealing reliability.

Drawings

Fig. 1 is an exploded view of an improved structure of an electric heating sealer according to a first preferred embodiment of the present invention.

Fig. 2 is an exploded view of an electric heating unit according to a second preferred embodiment of the present invention.

Fig. 3 is an exploded view of an electrothermal unit according to a third preferred embodiment of the present invention.

FIG. 4 is a cross-sectional view of an electric heating part according to a third preferred embodiment of the present invention.

Fig. 5 is an exploded view of an electric heating unit according to a fourth preferred embodiment of the present invention.

FIG. 6 is a sectional view of an electric heating part according to a fourth preferred embodiment of the present invention.

Fig. 7 is an exploded view of an electrothermal unit according to a fifth preferred embodiment of the present invention.

FIG. 8 is a sectional view of an electric heating part according to a fifth preferred embodiment of the present invention.

Reference numbers in the drawings:

retaining ring 5

Front cover 51

Battery case cover 52

Rear cover 53

Screw hole 54

Stud 55

Screw 56

Slotted hole 511

Hook 6

Hanging part 60

Fixing part 61

Base 10

Front receiving chamber 11

Spring support 111

Front retaining wall 12

Battery chamber 13

Rear retaining wall 14

Rear receiving chamber 15

Rear end face 150

Through opening 151

Front metal contact pads 20, 21

Rear metal contact plates 22, 23

Heat-seal mechanism 30

Heat-resistant insulating base 31, 71, 77, 81, 91

Left side 311, 711, 771, 811, 911

Intermediate protrusions 312, 712, 772, 812, 912

Right side 313, 713, 773, 813, 913

Electric heating part 32

Electric heating wires 321, 76, 80, 86, 94

Left conductive fastener 322, 72, 78, 82, 92

Right conductive mount 323, 73, 79, 83, 93

Compression spring 33

Heat resistant electrical insulation sheet 34

Another heat-resistant electric insulation sheet 35

Pressing part 40

One end 41 of the pressing part

The other end 42 of the pressing part

Heat-resistant insulator 43

Positioning notches 63, 64

Fixing grooves 74, 75

Rivet holes 774, 775, 814, 815

Nail head 781, 791

Vias 914, 915

Detailed Description

The invention provides an improved structure of an electric heating seat of a sealing machine, which comprises a heat-resistant insulating base part and an electric heating part, wherein the heat-resistant insulating base part is provided with a left side part, a middle convex part and a right side part which are sequentially adjacent.

The electric heating part comprises at least two electric heating wires which are separated by a preset distance, and two ends of each electric heating wire are respectively and electrically connected with a left conductive fixing part and a right conductive fixing part. The left conductive fixing piece and the right conductive fixing piece are respectively fixed on the left side part and the right side part of the heat-resistant insulating base part, so that the heating wire is positioned on the middle protruding part of the heat-resistant insulating base part.

By the improved design, the sealing machine of the invention can enable the object to be sealed to have more than two seals, and therefore, the sealing machine has better reliability when the object to be sealed is in a working environment suffering from impact, namely, a safer and more stable sealing state is provided.

The left conductive fixing part and the right conductive fixing part can be C-shaped cross section conductive fixing parts which are respectively clamped on the left side part and the right side part of the heat-resistant insulating base part. In addition, each C-shaped section conductive fixing part can comprise at least two fixing grooves for the corresponding insertion of the at least two electric heating wires, so that the electric heating wires are positioned conveniently and correctly.

The improved structure of the electric heating seat of the sealing machine can also comprise a compression spring which is arranged at the bottom of the heat-resistant insulating base part, so that the heat-resistant insulating base part can move up and down relative to the base of the sealing machine body. The heat-resistant insulating base may be made of ceramic.

The left conductive fixing piece and the right conductive fixing piece can also be rivets, and the left side part and the right side part are provided with rivet holes for accommodating the corresponding rivets. Two ends of the electric heating wire can be respectively welded and fixed on the nail head of the corresponding rivet. In addition, the rivet can be a rivet hole for respectively clamping and fixing two ends of the at least two electric heating wires at the left side part and the right side part.

The upper and lower parts of the at least two electric heating wires can be covered with heat-resistant electric insulation sheets. The heat-resistant electrical insulation sheet is made of Teflon material, for example.

The left conductive fixing piece and the right conductive fixing piece can be elastic sheets, the left side part and the right side part are both provided with through holes, and the elastic sheets are both expanded and fixed in the corresponding through holes.

The middle convex part can be concavely provided with a positioning notch corresponding to the electric heating wire so as to supply the electric heating wire for positioning.

The sealing machine of the present invention can be supplied by direct Alternating Current (AC) power or by a transformer to direct current.

This is further described below in conjunction with the figures.

Referring to fig. 1, an exploded view of an improved structure of an electric heat sealing machine of the present embodiment includes a base 10, a heat sealing mechanism 30, and a pressing portion 40. The base 10 is provided with a front compartment 11, a front wall 12, a battery compartment 13, a rear wall 14, and a rear compartment 15. The front housing 11 is provided with a spring support 111, a pair of front metal contact plates 20, 21 are fixed on the front wall 12, and a pair of rear metal contact plates 22, 23 are arranged on the rear wall 14, wherein the rear metal contact plates 22, 23 are connected and conducted with each other.

The heat seal mechanism 30 is provided in the front housing chamber 11 of the base 10. The heat sealing mechanism 30 includes a heat-resistant insulating base 31, an electric heating part 32, and a compression spring 33, wherein the heat-resistant insulating base 31 has a left side 311, a middle protrusion 312, and a right side 313 adjacent to each other in sequence. The compression spring 33 is disposed between the heat-resistant insulating base 31 and the spring support 111 of the front housing chamber 11, so that the heat-resistant insulating base 31 can move up and down with respect to the base 10. The middle protrusion 312 is further recessed with a positioning notch 63 corresponding to the two heating wires 321 for positioning the two heating wires 321.

The electric heating unit 32 includes two parallel electric heating wires 321 spaced apart by a predetermined distance, for example, 1-2 cm, and two ends of each electric heating wire 321 are electrically connected to a left conductive fixing member 322 and a right conductive fixing member 323, respectively. The left conductive fixing member 322 and the right conductive fixing member 323 have C-shaped cross sections and are respectively fastened and fixed to the left side portion 311 and the right side portion 313 of the heat-resistant insulating base 31, so that the heating wire 321 is positioned on the middle protrusion 312 of the heat-resistant insulating base 31, and the conductive fixing members 322, 323 are electrically connected to the front metal contact pieces 20, 21.

One end 41 of the pressing portion 40 is pivotally connected to one end of the rear base 10, and the other end 42 corresponds to the position of the middle protrusion 312, so that the heat-resistant insulator 43 fixed to the other end 42 can contact the middle protrusion 312 when the pressing portion 40 is pressed downward. A cover device covers the base 10, and the cover device includes a front cover 51, a battery cover 52, and a rear cover 53, which respectively cover the heat sealing mechanism 30, the battery compartment 13, and the rear end of the base 10. The base 10 and the pressing portion 40 are made of transparent plastic materials.

The front cover 51 has a slot 511 for the middle protrusion 312 to pass through the slot 511. The front cover 51 is further provided with two screw holes 54, and the front housing chamber 11 is also provided with two studs 55 corresponding to the two screw holes 54 of the front cover 51, and two screws 56 are fastened to the studs 55 by passing through the two screw holes 54.

In this case, a safety device is also included, which is configured as a buckle 5. The retaining ring 5 is pivoted to the outer side of the base 10 and is located at a position opposite to the heat sealing mechanism 30, so that the retaining ring 5 can be adjusted to enable the retaining ring 5 to rotate and displace to the upper side of the heat sealing mechanism 30.

In addition, a hook 6 has a hook portion 60 and a fixing portion 61. The fixing portion 61 is fixed in the rear compartment 15, and the engaging portion 60 protrudes from a through opening 151 formed at a rear end surface 150 of the rear compartment 15.

The heat sealing mechanism 30 further includes a heat insulating covering sheet 34 covering the middle protrusion 312 and the electric heating portion 32, which may be made of teflon mesh fabric or the like, for providing a smooth surface and protecting the electric heating portion 32.

When the user uses the plastic bag, the retaining ring 5 must be first pushed away from the upper side of the heat sealing mechanism 30, when the pressing portion 40 is pressed downward, the heat-resistant insulator 43 can contact with the middle protrusion 312, the electric heating portion 32 is in contact with the battery, the two electric heating wires 321 are energized and then the temperature rises, so as to provide the heat energy temperature for sealing the plastic bag.

Referring to fig. 2, there is shown an exploded view of an electrothermal unit according to a second preferred embodiment of the present invention. The present embodiment is substantially the same as the first embodiment, except that the left conductive fixing member 72 and the right conductive fixing member 73 of the electric heating unit are respectively provided with two fixing grooves 74 and 75 corresponding in number to the heating wires 76.

The two ends of the heating wire 76 are inserted into the fixing grooves 74 and 75, respectively, to be connected and fixed. Similarly, the left conductive fixing member 72 and the right conductive fixing member 73 are respectively clipped on the left side portion 711 and the right side portion 713 of the heat-resistant insulating base portion 71. And the auxiliary fixing by the fixing grooves 74, 75, the heating wire 76 can be well positioned even if the middle protrusion 712 is not provided with the positioning notch as in the above embodiment.

Referring to fig. 3 and 4, an exploded view and a cross-sectional view of an electrothermal device according to a third preferred embodiment of the present invention are shown. The present embodiment is substantially the same as the first embodiment except that the left conductive fastener 78 and the right conductive fastener 79 are rivets, both ends of the heating wire 80 are respectively welded to the nail heads 781 and 791 of the rivets, and the two rivets are respectively riveted to the left side 771 and the right side 773 through the rivet holes 774 and 775 provided in the left side 771 and the right side 773, thereby achieving the fixation of the heating portion to the heat-resistant insulating base 77. The intermediate projection 772 of the heat resistant insulating base 77 is also provided with a positioning notch 63.

Referring to fig. 5 and 6, an exploded view and a partial sectional view of an electric heating unit according to a fourth preferred embodiment of the present invention are shown, respectively. The structure of the present embodiment is substantially the same as the third embodiment, except that the left conductive fastener 82 and the right conductive fastener 83 are hollow rivets, and two ends of the two heating wires 86 are respectively fastened and fixed by the rivets at two sides to rivet holes 814, 815 opened at the left side portion 811 and the right side portion 813 through which the rivets pass, thereby forming a stable connection with respect to the left side portion 811 and the right side portion 813.

In addition, in this embodiment, in addition to the heat-resistant electric insulation sheet 34 covering the electric heating portion, another heat-resistant electric insulation sheet 35 is laid under the electric heating wire 86, so that the other heat-resistant electric insulation sheet 35 is sandwiched between the electric heating wire 86 and the middle protrusion portion 812 of the heat-resistant insulating base 81.

Referring to fig. 7 and 8, an exploded view and a partial sectional view of an electric heating unit according to a fifth preferred embodiment of the present invention are shown, respectively. The structure of the present embodiment is substantially the same as the first embodiment, except that two ends of the long strip-shaped heater wire 94 are connected to the left conductive fastener 92 and the right conductive fastener 93 of the spring type, respectively, and the left portion 911 and the right portion 913 have a through hole 914, 915. The two spring plates are expanded and fixed in the through holes 914 and 915. The middle protrusion 912 of the heat-resistant insulating base 91 is provided with a positioning notch 64 corresponding to the larger width of the electric heating wire 94.

The design of the multi-wire electric heating seat of the invention is not only suitable for the general integrated fixed electric heating seat sealing machine, but also can be used for the replaceable electric heating seat sealing machine.

The above-described embodiments are merely exemplary for convenience of description, and the claimed invention should not be limited to the above-described embodiments, but should be defined only in accordance with the scope of the appended claims.

Claims (14)

1. An improved structure of electric heating seat of sealing machine includes:

a heat-resistant insulating base having a left side portion, a middle protrusion portion, and a right side portion which are adjacent in sequence; and

an electric heating part; wherein:

the electric heating part comprises at least two electric heating wires which are separated by a preset distance, two ends of each electric heating wire are respectively and electrically connected with a left conductive fixing part and a right conductive fixing part, and the left conductive fixing part and the right conductive fixing part are respectively fixed on the left side part and the right side part of the heat-resistant insulating base part, so that the electric heating wires are positioned on the middle protruding part of the heat-resistant insulating base part.

2. The improved structure of electrothermal sealing machine of claim 1, wherein the left conductive fixing member and the right conductive fixing member are C-shaped conductive fixing members respectively clipped on the left side portion and the right side portion of the heat-resistant insulating base.

3. The improved structure of the electromechanical thermal socket of claim 2, wherein each of the C-shaped conductive fasteners includes at least two fixing slots for the corresponding insertion of at least two heating wires.

4. The improved structure of an electromechanical thermal seat of a sealing machine as claimed in claim 1, wherein the left conductive fixing member and the right conductive fixing member are rivets, and both the left side portion and the right side portion have a rivet hole for receiving the corresponding rivets.

5. The improved structure of the electromechanical hot seat for sealing machine as claimed in claim 4, wherein two ends of the at least two heating wires are respectively welded to the corresponding nail heads of the rivets.

6. The improved structure of the electromechanical thermal seat of claim 4, wherein the rivets respectively snap-fit and fix two ends of the at least two heating wires in the rivet holes of the left side portion and the right side portion of the heat-resistant insulating base.

7. The improved structure of the electric heating socket of sealing machine according to claim 1, wherein a heat-resistant electric insulation sheet covers the at least two heating wires.

8. The improved structure of the sealing machine electric heating base of claim 7, wherein the heat-resistant electric insulation sheet and/or the another heat-resistant electric insulation sheet is made of Teflon material.

9. The improved structure of the electromechanical thermal socket for sealing machine of claim 7, wherein another heat-resistant electrical insulation sheet is disposed under the at least two heating wires.

10. The improved structure of the sealing machine electric heating base of claim 9, wherein the heat-resistant electric insulation sheet and/or the another heat-resistant electric insulation sheet is made of teflon.

11. The improved structure of the electromechanical thermal socket of claim 1, wherein the left conductive fixing member and the right conductive fixing member are elastic pieces, and the left side portion and the right side portion have a through hole, and the elastic pieces are expanded and fixed in the corresponding through holes.

12. The improved structure of the sealing machine electric heating seat of claim 1, wherein the middle protrusion is concavely provided with positioning notches corresponding to the at least two heating wires for positioning the at least two heating wires.

13. The improved structure of the electric heating seat of sealing machine as claimed in claim 1, wherein it comprises a compression spring disposed at the bottom of the heat-resistant insulating base.

14. The improved structure of the electromechanical thermal seat of claim 1, wherein the heat-resistant insulating base is made of ceramic.