Four-side sealing device of small bag filling packaging machine

Abstract

The utility model relates to a four-edge sealing device of a small bag filling packaging machine, which is characterized in that a fixed hollow rotating shaft and a movable hollow rotating shaft are arranged on a mounting frame, a heating rod is arranged in each of the fixed hollow rotating shaft and the movable hollow rotating shaft, and a sealing roller is arranged in the middle of each of the fixed hollow rotating shaft and the movable hollow rotating shaft; a plurality of rows of protruding square edges are arranged on the sealing roller, the two ends of the movable hollow rotating shaft are installed on the installation frame through movable bearing seats capable of moving relative to the installation frame respectively, a sealing roller pressure adjusting device is arranged on the installation frame, and the sealing roller pressure adjusting device is connected with the movable bearing seats. The fixed hollow rotating shaft and the movable hollow rotating shaft are connected through a gear transmission mechanism and a power device. The packaging film is subjected to heat sealing along with relative rotation of the two sealing rollers, the lower face and the two sides are sealed firstly, then the upper face is sealed, the sealing strength is high, the sealing surface is smooth, multiple columns of packaging bags can be formed in a sealing mode at a time, the sealing efficiency is high, and the requirement for large-scale production is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to small package filling technical field, especially a four -sided sealing device of small bag filling and packaging machine. BACKGROUND

[0002] The small bag filling and packaging machine is a kind of equipment for the packaging of food, medicine, cosmetics, daily chemical products and many other fields.The sealing mode of the small bag filling and packaging machine is currently popular four-side sealing mode, because four-side sealing can meet the sealing and anti-fake requirements of medicine packaging, and can meet the demand of fine cosmetic packaging.The four-side sealing implementation mode generally has: first longitudinal sealing and then horizontal sealing, and second U-shaped sealing and then horizontal sealing.The sealing speed of the above two four-side sealing modes is relatively slow, cannot meet the requirements of large-scale production, and the sealing strength is weak, the sealing surface is uneven, and product material is easily leaked. CONTENT OF THE UTILITY MODEL

[0003] In order to solve the problems in the prior art, the utility model discloses a four-side sealing device of small bag filling and packaging machine, which solves the technical problems of low sealing efficiency, inability to meet the requirements of large-scale production, weak sealing strength, uneven sealing surface and easy leakage of product material of the existing sealing device.

[0004] The utility model discloses a four-side sealing device of small bag filling and packaging machine, which solves the technical problems of low sealing efficiency, inability to meet the requirements of large-scale production, weak sealing strength, uneven sealing surface and easy leakage of product material of the existing sealing device.

[0005] A four-side sealing device of small bag filling and packaging machine, comprising a mounting frame, two opposite parallel fixed hollow shafts and movable hollow shafts are arranged at the same height on the mounting frame, a heating rod is arranged in each of the fixed hollow shaft and the movable hollow shaft, one end of the heating rod extends out of the fixed hollow shaft or the movable hollow shaft to connect a heating power supply, a sealing rod is arranged in the middle of the fixed hollow shaft and the movable hollow shaft, a plurality of convex quadrangular beads are arranged on the circumference of the sealing rod, the two ends of the movable hollow shaft are respectively installed on the mounting frame through a movable bearing seat movable relative to the mounting frame, a sealing rod pressure adjusting device is arranged on the mounting frame corresponding to the positions of the two movable bearing seats, the sealing rod pressure adjusting device is connected with the movable bearing seat, and the fixed hollow shaft and the movable hollow shaft are connected with a power device through a gear transmission mechanism.

[0006] Further optimization, the sealing rod pressure adjusting device comprises an adjusting screw rod arranged on the mounting frame, the adjusting screw rod is threadedly connected with a threaded hole arranged on the mounting frame, one end of the adjusting screw rod penetrates through the threaded hole and abuts against the movable bearing seat, a return spring is sleeved on the adjusting screw rod between the movable bearing seat and the mounting frame, one end of the return spring is fixedly connected with the movable bearing seat, the other end is fixedly connected with the mounting frame, the other end of the adjusting screw rod extends out of the mounting frame and is provided with an adjusting disc, and a scale disc is arranged on the adjusting disc.

[0007] Further, a receiving tray is arranged on the mounting frame.

[0008] Further, the gear transmission mechanism comprises a first gear arranged on the fixed hollow rotating shaft and a second gear arranged on the movable hollow rotating shaft, the first gear and the second gear are engaged with each other and have the same number of teeth.

[0009] The utility model has the advantages of the following:

[0010] The heat generated by the heating rod is transmitted to the sealing rods through the hollow rotating shafts, and the packaging film is heat-sealed by the quadrangular beads with the relative rotation of the two sealing rods, the lower side and the two sides are sealed first, and then the upper side is sealed, the sealing strength is large, the sealing surface is flat, the product material is prevented from leaking out, and a plurality of packaging bags can be formed by sealing at one time, the sealing efficiency is high, and the large-scale production requirement is met.

[0011] The utility model is equipped with a movable hollow rotating shaft, the distance between the movable hollow rotating shaft and the fixed hollow rotating shaft can be adjusted through the sealing rod pressure adjusting device, so that the pressure of the two sealing rods is adjusted, the sealing pressure requirement of different products is met, and enough sealing strength, flat sealing surface and prevention of product material leakage are guaranteed. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the specific embodiment of the utility model or the technical scheme in the prior art, the drawings needed in the specific embodiment or the prior art description will be briefly introduced below. In all the drawings, similar elements or components are generally indicated by similar reference numerals. In the drawings, various elements or components are not necessarily drawn according to the actual proportion.

[0013] Fig. 1 It is a structural schematic view of the four-edge sealing device of the utility model;

[0014] Fig. 2 It is another angle structural schematic view of the four-edge sealing device of the utility model;

[0015] In the drawings, 1 is a mounting frame, 2 is a fixed hollow rotating shaft, 3 is a movable hollow rotating shaft, 4 is a heating rod, 5 is a sealing rod, 6 is a quadrangular bead, 7 is a movable bearing seat, 8 is an adjusting screw, 9 is a return spring, 10 is a receiving tray, 11 is a first gear, 12 is a second gear, and 13 is an adjusting disc. DETAILED DESCRIPTION

[0016] The embodiments of the technical scheme of the utility model will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical scheme of the utility model, therefore only as an example, and cannot limit the protection scope of the utility model.

[0017] As Figs. 1-2As shown, a four-side sealing device of a sachet filling and packaging machine comprises a mounting frame 1, two opposite parallel fixed hollow shafts 2 and moving hollow shafts 3 are arranged at the same height on the mounting frame 1, a heating rod 4 is arranged in each of the fixed hollow shaft 2 and the moving hollow shaft 3, one end of the heating rod 4 extends out of the fixed hollow shaft 2 or the moving hollow shaft 2 to be connected to a heating power source, a sealing rod 5 is arranged at the middle part of each of the fixed hollow shaft 2 and the moving hollow shaft 3, a plurality of rows of protruding square beads 6 are arranged on the circumferential surface of the sealing rod 5, the two ends of the moving hollow shaft 3 are respectively arranged on the mounting frame 1 through a movable bearing seat 7 which can move relative to the mounting frame 1, a sealing rod pressure adjusting device is arranged on the mounting frame 1 corresponding to the positions of the two movable bearing seats 7, the sealing rod pressure adjusting device is connected with the movable bearing seat 7, and the fixed hollow shaft 2 and the moving hollow shaft 3 are connected with a power device through a gear transmission mechanism.

[0018] The four-side sealing device is one process unit of the sachet filling and packaging machine, after the product raw materials are injected into the packaging film by the feeding unit, the four-side sealing device seals and forms the product packaging film and wraps the product materials in the packaging film. The packaging film passes between the opposite rotating sealing rods 5, the heat generated by the heating rod 4 is transmitted to the sealing rod 5 through the hollow shaft, and the packaging film is heat-sealed by the square beads 6 with the relative rotation of the sealing rod 5, and the upper surface is sealed after the lower surface and the two sides are sealed, so that the sealing strength is large, the sealing surface is flat, the product materials are prevented from leaking out, and a plurality of packaging bags can be sealed and formed at one time, the sealing efficiency is high, and the large-scale production requirement is met.

[0019] The four-side sealing device is one process unit of the sachet filling and packaging machine, after the product raw materials are injected into the packaging film by the feeding unit, the four-side sealing device seals and forms the product packaging film and wraps the product materials in the packaging film. The packaging film passes between the opposite rotating sealing rods 5, the heat generated by the heating rod 4 is transmitted to the sealing rod 5 through the hollow shaft, and the packaging film is heat-sealed by the square beads 6 with the relative rotation of the sealing rod 5, and the upper surface is sealed after the lower surface and the two sides are sealed, so that the sealing strength is large, the sealing surface is flat, the product materials are prevented from leaking out, and a plurality of packaging bags can be sealed and formed at one time, the sealing efficiency is high, and the large-scale production requirement is met.

[0020] In some embodiments, the sealing rod pressure adjusting device comprises an adjusting lead screw 8 arranged on the mounting frame 1, the adjusting lead screw 8 is threadedly connected with a threaded hole arranged on the mounting frame 1, one end of the adjusting lead screw 8 abuts against the movable bearing seat 7 through the threaded hole, a reset spring 9 is sleeved on the adjusting lead screw 8 between the movable bearing seat 7 and the mounting frame 1, one end of the reset spring 9 is fixedly connected with the movable bearing seat 7, and the other end is fixedly connected with the mounting frame 1, the other end of the adjusting lead screw 8 extends out of the mounting frame 1 and is provided with an adjusting disc 13, and a scale disc is arranged on the adjusting disc 13.

[0021] By rotating the adjusting knob 13 to adjust the screw rod 8, the screw rod 8 moves against the moving bearing seat 7, so that the distance between the moving hollow shaft 3 and the fixed hollow shaft 2 is reduced, and when the screw rod 8 is rotated in the opposite direction, the moving hollow shaft 3 is away from the fixed hollow shaft 2 under the pulling force of the reset spring 9, so that the size adjustment of the sealing pressure is realized. The dial is convenient for controlling the adjustment of the pressure and is also convenient for controlling the adjustment stroke of the two screw rods 8 to be consistent.

[0022] In some embodiments, a material receiving disc 10 is arranged on the mounting frame 1. The design of the material receiving disc 10 prevents the material from entering the bearing and the gear.

[0023] In some embodiments, the gear transmission mechanism comprises a first gear 11 arranged on the fixed hollow shaft 2 and a second gear 12 arranged on the moving hollow shaft 3, and the first gear 11 and the second gear 12 are meshed with each other and have the same number of teeth.

[0024] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions recorded in the above embodiments can still be modified, or some or all of the technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the specification of the present application; any alternative improvement or change made by those skilled in the art to the embodiments of the present application falls within the protection scope of the present application.

[0025] The parts not described in detail in the present application are the known technology of those skilled in the art.

Claims

1. A four-side-seal apparatus for a sachet filling and packaging machine, characterized in that: The installation frame is provided with two opposite parallel fixed hollow rotating shafts and moving hollow rotating shafts at the same height, a heating rod is arranged in each of the fixed hollow rotating shaft and the moving hollow rotating shaft, one end of the heating rod extends from the fixed hollow rotating shaft or the moving hollow rotating shaft to connect a heating power supply, a sealing rod is arranged in the middle of the fixed hollow rotating shaft and the moving hollow rotating shaft, a plurality of convex square ridges are arranged on the circumferential surface of the sealing rod, the two ends of the moving hollow rotating shaft are respectively installed on the installation frame through a movable bearing seat which can move relative to the installation frame, a sealing rod pressure adjusting device is arranged on the installation frame at positions corresponding to the two movable bearing seats, the sealing rod pressure adjusting device is connected with the movable bearing seat, and the fixed hollow rotating shaft and the moving hollow rotating shaft are connected with a power device through a gear transmission mechanism.

2. Four-side-seal apparatus of a pouch-filling packaging machine according to claim 1, characterized in that: The sealing rod pressure adjusting device comprises an adjusting screw rod arranged on the installation frame, the adjusting screw rod is in threaded cooperation with a threaded hole arranged on the installation frame, one end of the adjusting screw rod abuts against the threaded hole and the movable bearing seat, a reset spring is sleeved on the adjusting screw rod between the movable bearing seat and the installation frame, one end of the reset spring is fixedly connected with the movable bearing seat, the other end is fixedly connected with the installation frame, the other end of the adjusting screw rod extends out of the installation frame and is provided with an adjusting disc, and a scale disc is arranged on the adjusting disc.

3. A four-side-seal apparatus for a pouch-filling packaging machine according to claim 1, characterized in that: A material receiving disc is arranged on the installation frame.

4. A four-side-seal apparatus for a pouch-filling packaging machine according to claim 1, characterized in that: The gear transmission mechanism comprises a first gear arranged on the fixed hollow rotating shaft and a second gear arranged on the moving hollow rotating shaft, the first gear and the second gear are in meshing with each other and have the same number of teeth.

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