Hot pressing strip for sealing machine

Abstract

The utility model discloses a hot pressing strip for a sealing machine, which comprises a base, an insulating substrate, a heating strip, an anti-sticking heat conduction sleeve, an electrode connecting column and an electrode connecting piece, two ends of the base are provided with positioning joints, and a plurality of insulating substrate fixing positions are arranged between the two positioning joints. The bottom of the insulating substrate is installed on the insulating substrate fixing position, two electrode inserting positions are symmetrically arranged on the two sides of the upper portion of the insulating substrate, the two electrode connecting columns are inserted into the two electrode inserting positions respectively, the two electrode connecting columns are connected with the two electrodes of a power source respectively, and the two electrode connecting columns are connected with the two electrodes of the power source respectively. The heating strip is installed on the top of the insulating substrate, the two ends of the heating strip are connected with the corresponding electrode connecting columns through copper electrode connecting pieces respectively, and the heating strip is wrapped with the anti-sticking heat conduction sleeve. By means of the mode, the service life of the heating strip in the hot-pressing strip can be prolonged, and material waste is reduced.

Description

Technical Field

[0001] The utility model relates to the field of packaging machinery, in particular to a hot pressing strip for a sealing machine. Background Art

[0002] The sealing machine uses a point heat strip to press on the mouth of the plastic bag and quickly seal it with high-temperature hot melt. The heat strip is generally composed of a high-resistance electric heating strip connected to a power source. The currently commonly used structure of the heat strip is that the heat strip is fixed on an insulating plate, and the two ends of the heat strip are directly rolled on the electrode column and then fixed by welding. However, in actual use, it is found that due to the large temperature changes, the electric heating strip deforms significantly during thermal expansion and contraction, which will cause the welding position to be repeatedly stressed and cause the welding point to loosen. The local resistance fluctuates significantly during heating, and the heating strip is damaged due to excessive temperature. Over a long period of time, the replacement frequency of the heating strip is much higher than the theoretical replacement frequency. Utility Model Content

[0003] The main technical problem solved by the utility model is to provide a heat pressing strip for a sealing machine, which can increase the service life of the heating strip therein and reduce waste.

[0004] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide a hot pressing strip for a sealing machine, the hot pressing strip for a sealing machine includes: a base, an insulating substrate, a heating strip, an anti-sticking thermally conductive sleeve, an electrode connecting column and an electrode connecting piece, positioning joints are provided at both ends of the base, and multiple insulating substrate fixing positions are arranged between the two positioning joints, the bottom of the insulating substrate is installed on the insulating substrate fixing position, and two electrode plug-in positions are symmetrically arranged on both sides of the upper part of the insulating substrate. There are two electrode connecting columns, which are respectively plugged into the two electrode plug-in positions, and the two electrode connecting columns are respectively connected to the two poles of the power supply, and the heating strip is installed on the top of the insulating substrate. The two ends of the heating strip are respectively connected to the corresponding electrode connecting columns through copper electrode connecting pieces, and the anti-sticking thermally conductive sleeve is coated on the heating strip.

[0005] In a preferred embodiment of the present invention, the anti-sticking heat-conductive sleeve is made of Teflon material.

[0006] In a preferred embodiment of the utility model, the electrode connector includes a heating strip connecting part, an electrode connecting arm and a positioning plate. The heating strip connecting part is provided with a connecting hole, and the heating strip end is also provided with a connecting hole of the same specification. The heating strip connecting part and the end of the heating strip are connected by fastening screws penetrating through the two connecting holes. The insulating substrate is provided with an electrode connecting groove connecting the electrode plug-in position and the outside of the insulating substrate. The electrode connecting arm is connected to the electrode connecting column through the electrode connecting groove. The positioning plate is perpendicular to the heating strip connecting part and can be clamped on the outside of the insulating substrate. A corresponding buffer avoidance groove is provided on the insulating substrate at the fastening screw connection position. The anti-sticking thermal conductive sleeve also covers the positioning plate.

[0007] In a preferred embodiment of the present invention, avoidance steps are provided on both sides of the top of the insulating substrate, and the electrode connector is installed relying on the avoidance steps.

[0008] In a preferred embodiment of the present invention, a cooling air pipe joint is provided at the middle position of the base, and a corresponding cooling pipe avoidance groove is provided at a corresponding position on the insulating substrate.

[0009] In a preferred embodiment of the utility model, the substrate fixing position includes two symmetrically arranged clamping plates and positioning screws, a through connecting hole is provided between the two clamping plates, and the positioning screws continuously pass through the connecting holes on the two clamping plates to fix the insulating substrate on the substrate fixing position.

[0010] The beneficial effect of the utility model is that the utility model is optimized on the basis of the structure of the existing hot pressing strip for the sealing machine, and a copper electrode connecting piece is used as an intermediary to connect the heating strip and the electrode connecting column, thereby reducing the direct influence of the hot and cold deformation of the heating strip on the electrode connection position, so that the heating strip will not overheat during use, thereby increasing the service life of the heating strip. Through this improvement, in actual use, the replacement frequency of the heating strip is significantly reduced, effectively reducing material waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a front view structural schematic diagram of a preferred embodiment of the utility model;

[0012] Figure 2 is a schematic diagram of the front view structural schematic diagram after removing the anti-sticking sleeve;

[0013] Figure 3 It is a rear view structural schematic diagram of a preferred embodiment of the utility model;

[0014] Figure 4 is a schematic diagram of the rear view structure schematic diagram after removing the anti-sticking sleeve;

[0015] Figure 5is shown Figure 4 A magnified schematic diagram of the local structure in FIG.

[0016] The markings of the components in the accompanying drawings are as follows:

[0017] 1. Base, 2. Insulating substrate, 3. Heating strip, 4. Anti-sticking thermal sleeve, 5. Electrode connector, 6. Electrode connector

[0018] 7. Fasten the screws;

[0019] 101. Cooling air pipe joint, 102. Card plate, 103. Positioning joint;

[0020] 201. Buffer avoidance groove, 202. Electrode connection groove, 203. Cooling pipe avoidance groove;

[0021] 501. Heating strip connection part, 502. Positioning block, 503. Electrode connection arm. DETAILED DESCRIPTION

[0022] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0023] See also Figures 1 to 5 , the utility model embodiment includes:

[0024] A hot pressing strip for a sealing machine, the hot pressing strip for a sealing machine comprising: a base 1, an insulating substrate 2, a heating strip 3, an anti-sticking heat-conductive sleeve 4, an electrode connecting column 6 and an electrode connecting piece 5, positioning joints 103 are provided at both ends of the base 1, two insulating substrate fixing positions are symmetrically arranged between the two positioning joints 103, each insulating substrate fixing position comprises two symmetrically arranged card plates 102 and positioning screws, a through connecting hole is provided between the two card plates 102, when the bottom of the insulating substrate 2 is installed on the insulating substrate fixing position, the positioning screws continuously pass through the connecting holes on the two card plates 102 to fix the insulating substrate 2 on the substrate fixing position. Two electrode plug-in positions are symmetrically arranged on both sides of the upper part of the insulating substrate 2. There are two electrode connecting posts 6, which are respectively plugged into the two electrode plug-in positions. The two electrode connecting posts 6 are respectively connected to the two poles of the power supply. The heating strip 3 is installed on the top of the insulating substrate 2. The two ends of the heating strip 3 are respectively connected to the corresponding electrode connecting posts 6 through copper electrode connectors 5. The anti-sticking thermal conductive sleeve 4 is coated on the heating strip 3. The anti-sticking thermal conductive sleeve 4 is made of Teflon material, has good heat resistance and excellent lubrication ability, and can be pressed on the mouth of the plastic bag during edge sealing and heated without being adhered to the plastic bag.

[0025] The electrode connector 5 includes a heating strip connection part 501, an electrode connection arm 503 and a positioning plate 502. The heating strip connection part 501 is provided with a connection hole, and the end of the heating strip 3 is also provided with a connection hole of the same specification. The heating strip connection part 501 and the end of the heating strip 3 are connected by fastening screws 7 penetrating through the two connection holes. The insulating substrate 2 is provided with an electrode connection groove 202 connecting the electrode plug-in position and the outside of the insulating substrate 2. The electrode connection arm 503 is welded together with the column body of the electrode connection column 6 after being wrapped through the electrode connection groove 202, and the positioning plate 502 is perpendicular to the heating strip connection part 501 and can be snapped on the outside of the insulating substrate 2 to reduce the shaking of the entire electrode connector 5 during use. Through the intermediary of the electrode connector 5, in actual use, the thermal expansion and contraction of the heating strip 3 will not directly affect the connection between the electrode connection arm 503 and the electrode connection column 6, thereby preventing the connection position from loosening and causing excessive heat, which will burn the heating strip.

[0026] A corresponding buffer avoidance groove 201 is provided on the insulating substrate 2 at the connection position of the fastening screw 7. By providing the buffer avoidance groove 201, as the heating strip 3 expands and contracts, the connection position of the fastening screw 7 can move within the space of the buffer avoidance groove 201 according to the expansion and contraction situation, thereby offsetting the direct impact of the thermal expansion and contraction of the heating strip 3, further reducing the impact on the welding position of the electrode connecting arm 503 and the electrode connecting column 6, and thus increasing the service life of the heating strip 3.

[0027] When the anti-stick thermally conductive sleeve 4 covers the heating strip 3, the middle of the anti-stick thermally conductive sleeve 4 covers the heating strip 3, and the two sides are bonded to the insulating substrate 4, wherein the outer bonding area covers the positioning plate 502 of the electrode connector 5, thereby effectively stabilizing the installation position of the entire electrode connector 5 and preventing it from falling off.

[0028] The insulating substrate 2 has avoidance steps on both sides of its top, and the electrode connector is installed on the avoidance steps, so as to prevent the electrode connector 5 from being accidentally hit during installation and use.

[0029] A cooling gas pipe joint 101 is provided in the middle of the base, and a corresponding cooling pipe avoidance groove 203 is provided at a corresponding position on the insulating substrate 2. The cooling gas pipe joint 101 can be connected to a cooling gas pipeline when in use, so that cooling gas can be directly sprayed onto the insulating substrate 2 as a whole at the end of work to prevent the insulating substrate 2 from being overheated and damaged.

[0030] The present embodiment is a heat pressing strip used in a special sealing machine. In actual use, by using the electrode connector 5, the influence of the resistance change caused by thermal expansion and contraction when the heating strip 3 is directly connected to the electrode connecting column 6 on the heating strip 3 can be effectively eliminated, thereby significantly improving the service life.

[0031] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A hot pressing strip for a sealing machine, characterized in that: The heat pressing strip for the sealing machine comprises: a base, an insulating substrate, a heating strip, an anti-sticking heat-conducting sleeve, an electrode connecting column and an electrode connecting piece. Positioning joints are arranged at both ends of the base, and a plurality of insulating substrate fixing positions are arranged between the two positioning joints. The bottom of the insulating substrate is installed on the insulating substrate fixing position. Two electrode plug-in positions are symmetrically arranged on both sides of the upper part of the insulating substrate. There are two electrode connecting posts, which are respectively plugged into the two electrode plug-in positions. The two electrode connecting posts are respectively connected to the two poles of the power supply. The heating strip is installed on the top of the insulating substrate. The two ends of the heating strip are respectively connected to the corresponding electrode connecting posts through copper electrode connectors. The anti-sticking thermal conductive sleeve is covered on the heating strip.

2. The hot press strip for sealing machine according to claim 1, characterized in that: The anti-sticking heat-conducting sleeve is made of Teflon material.

3. The hot press strip for sealing machine according to claim 1, characterized in that: The electrode connector includes a heating strip connecting part, an electrode connecting arm and a positioning plate. The heating strip connecting part is provided with a connecting hole, and the heating strip end is also provided with a connecting hole of the same specification. The heating strip connecting part and the end of the heating strip are connected by fastening screws penetrating through the two connecting holes. The insulating substrate is provided with an electrode connecting groove connecting the electrode plug-in position and the outside of the insulating substrate. The electrode connecting arm is connected to the electrode connecting column through the electrode connecting groove. The positioning plate is perpendicular to the heating strip connecting part and can be clamped on the outside of the insulating substrate.

4. The hot press strip for sealing machine according to claim 3, characterized in that: A corresponding buffer avoidance groove is provided on the insulating substrate at the connection position of the fastening screw.

5. The heat press strip for sealing machine according to claim 3, characterized in that: The anti-sticking heat-conductive sleeve also covers the positioning plate.

6. The heat press strip for sealing machine according to claim 1, characterized in that: Both sides of the top of the insulating substrate are provided with avoidance steps, and the electrode connector is installed relying on the avoidance steps.

7. The heat press strip for sealing machine according to claim 1, characterized in that: A cooling air pipe joint is arranged at the middle position of the base, and a corresponding cooling pipe avoidance groove is arranged at a corresponding position on the insulating substrate.

8. The heat press strip for sealing machine according to claim 1, characterized in that: The substrate fixing position includes two symmetrically arranged clamping plates and positioning screws, a through connection hole is provided between the two clamping plates, and the positioning screws continuously pass through the connection holes on the two clamping plates to fix the insulating substrate on the substrate fixing position.

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