Heating strip tightening device of vacuum packaging machine

Abstract

The utility model provides a heating strip tightening device of a vacuum packaging machine and belongs to the technical field of vacuum machines, the vacuum packaging machine comprises a heating base and a heating strip located on the heating base, tightening devices are installed at the two ends of the heating strip, and the tightening devices tighten the two ends of the heating strip and fix the two ends of the heating strip on the heating base; the two ends of the heating base are arc-shaped; the tightening device comprises a bolt penetrating through the heating base, the two sides of the bolt are fixed and tightened through two nuts, a clamping groove is formed in the middle, facing the outer side, of the bolt, and the ends of the heating strips are fixed in the clamping groove. The heating strip can be fixed on the heating base, the two ends of the heating strip are tightened, and the middle part of the heating strip is prevented from protruding and being burnt out.

Description

Technical Field

[0001] The present invention relates to the technical field of vacuum machines, and in particular to a heating strip tightening device of a vacuum packaging machine. Background Art

[0002] A vacuum packaging machine is a device used to put items into packaging bags and extract the air in the bags to achieve a predetermined vacuum degree before sealing. It mainly includes a vacuum system, an electronic control system, and a heat-pressing sealing system. The heat-pressing sealing system mostly achieves heat sealing through a heating base and a heating strip, such as Figure 1 As shown, the traditional heat sealing mechanism generally places the heating strip in the groove of the heating base. Since there is no fixing device at both ends, it cannot be completely locked. After long-term operation, the middle part of the heating strip will bulge and burn out, resulting in poor sealing of the packaging bag. In addition, frequent replacement of the heating strip will also affect the shipment requirements of the product and increase costs.

[0003] Therefore, there is an urgent need for a heating strip tightening device to tighten the two ends of the heating strip to prevent the middle part of the heating strip from bulging and burning. Summary of the Invention

[0004] Purpose of the invention: The purpose of the present invention is to address the deficiencies of the prior art and to provide a heating strip tightening device for a vacuum packaging machine, which can fix the heating strip on the heating base and tighten the two ends of the heating strip to prevent the middle part of the heating strip from bulging and burning.

[0005] Technical solution: The present invention provides a heating strip tightening device for a vacuum packaging machine. The vacuum packaging machine includes a heating base and a heating strip located on the heating base. Tightening devices are installed at both ends of the heating strip to tighten the ends of the heating strip and fix them on the heating base. The ends of the heating base are arc-shaped.

[0006] The tightening mechanism consists of a bolt that runs through the heating base, secured and tightened with two nuts on either side. A slot is located in the middle of the bolt, facing outward, into which the end of the heating strip is secured. To use the device, insert the heating strip into the slot, turn the bolt clockwise 1-2 turns to tighten the strip, and then secure it with an M6 nut on the side of the heating mechanism; the nut is located approximately one-third of the way along the bolt's length.

[0007] Furthermore, the length of the bolt is 46 mm, the diameter of the bolt is 6 mm, and the diameter of the nut is 22 mm.

[0008] Furthermore, a heat insulating block is provided at the portion where the nut contacts the heating base. The heat insulating block is made of a high temperature resistant and heat insulating material, such as some engineering plastics, PPS, PPO, etc.

[0009] Furthermore, the arc has an angle range of 40° to 45°.

[0010] Furthermore, the heating base is provided with a mounting hole at the position of the bolt, and a sleeve is sleeved in the mounting hole.

[0011] Furthermore, the sleeve is made of high temperature resistant and heat insulating material such as ceramic.

[0012] Beneficial effects: Compared with the prior art, the advantages of the present invention are:

[0013] (1) The present invention changes the original 90-degree right-angle shape of the two ends of the heating base into an approximately 45-degree arc shape. This design facilitates the tightening of the heating strip and prevents it from bulging, thereby extending the service life of the heating strip and reducing the frequency of replacement.

[0014] (2) The present invention replaces the small cross-shaped screws on the sides of both ends with special large screws, which makes it more convenient to fix and lock the heating strip, making it firm and not easy to deform;

[0015] (3) The present invention slots and punches holes at both ends of the heating base to install special screws, and installs sleeves in the round holes to facilitate the rotation of the special screws and the installation of the heating strip;

[0016] (4) The present invention inserts one end of the heating strip into the middle gap of the special screws at both ends of the heating rod, rotates and tightens it and installs the nut to fix it, and locks and fixes the other end in the same way, so that the entire heating strip can be flat on the heating base, which can prevent the middle part of the heating strip from bulging and burning, thereby affecting the work quality and progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the prior art mentioned in the background technology;

[0018] Figure 2 It is a structural schematic diagram of the present invention;

[0019] Figure 3 yes Figure 2 A top view of

[0020] Figure 4 It is a structural schematic diagram of the tightening device in the present invention. DETAILED DESCRIPTION

[0021] The technical solution of the present invention is described in detail below with reference to the accompanying drawings, but the protection scope of the present invention is not limited to the embodiments.

[0022] like Figures 2 and 3The device depicts a heating strip tightening device for a vacuum packaging machine. The vacuum packaging machine includes a heating base 1 and a heating strip 2 positioned on the base 1. Tightening devices 3 are mounted at both ends of the heating strip 2, tightening the ends and securing them to the base 1. The ends of the heating base 1 are arc-shaped, with an arc angle of 45°. A mounting hole 4 is provided on the heating base 1 at the location of bolt 3-1, and a sleeve is inserted into the mounting hole 4. The sleeve is made of a high-temperature resistant and heat-insulating material such as ceramic.

[0023] like Figure 4 As shown, the tightening device 3 includes a bolt 3-1 that passes through the heating base 1 and is inserted into a sleeve. Two nuts 3-2 are used to secure and tighten the bolt 3-1 on either side. A slot 3-3 is located in the middle of the bolt 3-1, facing outward. The end of the heating strip 2 is secured within the slot 3-3. To use the heating strip, insert the strip into the slot, turn the bolt 1-2 turns clockwise to tighten the strip, and then secure it with an M6 nut on the side of the heating device.

[0024] Bolt 3-1 is 46mm long and 6mm in diameter. Nut 3-2 is 22mm in diameter, and the nut is located approximately one-third of the way along the bolt's length. A heat-insulating block 4 is located where nut 3-2 contacts the heating base 1. The heat-insulating block is made of a high-temperature-resistant, heat-insulating material, such as engineering plastics like PPS or PPO.

[0025] The installation method is as follows:

[0026] 1. Make slots and holes at both ends of the heating rod so that the tightening device and the bolts inside can be inserted smoothly. Install sleeves in the mounting holes at both ends of the heating rod, and install insulation blocks on both sides of the sleeves to fix them;

[0027] 2. Insert one end of the heating strip into the slot in the middle of the special bolts at both ends of the heating rod, rotate it clockwise 1 to 2 turns and tighten it, then install the nut to secure it.

[0028] 3. Tighten the other end in the same way so that the entire heating strip is flat on the heating rod without any looseness.

[0029] As described above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the present invention itself. Various changes may be made to it in form and detail without departing from the spirit and scope of the present invention as defined in the appended claims.

Claims

1. A heating strip tightening device for a vacuum packaging machine, the vacuum packaging machine comprising a heating base (1) and a heating strip (2) located on the heating base (1), characterized in that: Tightening devices (3) are installed at both ends of the heating strip (2), and the tightening devices (3) tighten the two ends of the heating strip (2) and fix them on the heating base (1); Both ends of the heating base (1) are in arc shape; The tightening device (3) comprises a bolt (3-1) passing through the heating base (1), two sides of the bolt (3-1) are fixed and tightened by two nuts (3-2), and the middle part of the bolt (3-1) facing the outside has a slot (3-3), and the end of the heating strip (2) is fixed in the slot (3-3).

2. The heating strip tightening device for a vacuum packaging machine according to claim 1, characterized in that: The length of the bolt (3-1) is 46 mm, the diameter of the bolt (3-1) is 6 mm, and the diameter of the nut (3-2) is 22 mm.

3. The heating strip tightening device for a vacuum packaging machine according to claim 2, characterized in that: A heat insulation block (4) is provided at the portion of the nut (3-2) that contacts the heating base (1).

4. The heating strip tightening device for a vacuum packaging machine according to claim 1, characterized in that: The arc has an angle ranging from 40° to 45°.

5. The heating strip tightening device for a vacuum packaging machine according to claim 1, characterized in that: The heating base (1) is provided with a mounting hole (4) at the position of the bolt (3-1), and a sleeve is sleeved in the mounting hole (4).

6. The heating strip tightening device for a vacuum packaging machine according to claim 5, characterized in that: The sleeve is made of ceramic.

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