Milk transverse sealing packaging machine

Abstract

The utility model relates to the field of milk processing, and particularly discloses a milk transverse sealing packaging machine which comprises a frame, a guide rod, transverse sealing units capable of sliding under the limitation of the guide rod and a driving unit for driving the transverse sealing units, the number of the transverse sealing units is four, the two transverse sealing units in the middle are fixedly connected, and the two transverse sealing units on the outer side are fixed to the frame. The push-pull unit is connected with the middle transverse sealing unit and then drives the transverse sealing unit to reciprocate; and fillet transition is arranged at the end face transition part of the transverse sealing unit. The milk boxes on the two parallel assembly lines can be packaged through one-time action of the push-pull unit, and the production efficiency is greatly improved; when the transverse sealing unit rapidly impacts and tears the milk box, the arc surface on the edge of the induction rod can greatly buffer transverse impact force and tearing force, and therefore the problem of transverse sealing corner cracking is solved. The two advantages are combined, the transverse sealing speed of the milk box can be greatly increased, and the packaging quality of the milk box can be further improved.

Description

Technical Field

[0001] The utility model belongs to the field of milk processing, in particular to a milk horizontal sealing packaging machine. Background Art

[0002] The automated production line is a key equipment to improve milk production. Take the square carton as an example. The carton is conveyed and pulled forward. After the milk is poured into the carton, it needs to pass through the packaging machine to seal the upper opening of the carton. The equipment used in this step is a transverse sealing machine. The transverse sealing machine mainly squeezes the opening of the carton through a pair of sensor bars and then instantly heats it to achieve sealing. In order to increase the speed of packaging, the active sensor bars will quickly impact the carton when they are close together, and there will be a tearing force between them and the carton when they leave. In the production of Tetra Pak, the above processing steps will cause a small amount of transverse sealing corner cracks, which will cause product leakage or bulging; specifically, when the clamp pulls the paper to a certain angle, this action is called ear pulling action, and a lateral pulling force will appear at this time. When the clamp clamps the paper tube, the lateral tearing force causes the intersection of the edge of the paper tube and the clamp to be strained. This is the formation principle of transverse sealing corner cracks. Since corner cracks occur occasionally and are extremely hidden, quality inspection is difficult and seriously damages the company's image. Utility Model Content

[0003] The utility model aims to provide a milk transverse sealing packaging machine which has no transverse sealing corner cracks and high production efficiency.

[0004] To achieve the above-mentioned purpose, the utility model provides a milk transverse sealing packaging machine, comprising: a frame, a pair of guide rods arranged in the frame, a plurality of transverse sealing units penetrated by the guide rods and slidable under the restriction of the guide rods, and a push-pull unit driving the transverse sealing unit, the two guide rods are arranged in parallel, the transverse sealing unit is provided with a sleeve for increasing the contact area at the position contacting the guide rod, four transverse sealing units are arranged, the two transverse sealing units located on the outer sides are fixedly connected to the frame, and the two transverse sealing units located in the middle are connected to each other so that both can be driven by the push-pull unit at the same time, and when the push-pull unit is extended and retracted, the two transverse sealing units located in the middle alternately fit the transverse sealing units on the corresponding sides to alternately seal the milk cartons on the two production lines.

[0005] As an improvement of the above-mentioned scheme, the horizontal sealing unit includes a mounting plate penetrated by the guide rod and a sensing rod fixed to the mounting plate, two metal strips are provided on one side of the sensing rod for fitting the milk carton, a groove is provided in the area between the two metal strips, and a terminal block connected to the metal strip is provided at the end of the sensing rod. After the two sensing rods are brought close to clamp the milk carton, the sensing rods are energized to heat up the side where the sensing rods are close to each other, thereby achieving the sealing of the milk carton.

[0006] As an improvement of the above solution, the upper and lower edges of the sensing rod that fit the milk carton side and the upper and lower edges of the groove are all configured to be rounded surfaces, and the radius of the rounded corners is greater than 3 cm.

[0007] As an improvement of the above scheme, the push-pull unit includes an air pump and two air rods, the fixed ends of the air rods are installed on the frame, and the movable ends of the air rods are connected to the two horizontal sealing units located in the middle. When the air pump is ventilated, the two air rods extend or retract at the same time.

[0008] As an improvement of the above solution, a spring is provided on each guide rod, and the head and tail ends of the spring respectively abut against two adjacent sleeves. After the gas rod is deflated, the spring pushes the two middle transverse sealing units to the middle position of the frame.

[0009] The utility model has the following beneficial effects: the push-pull unit can seal milk cartons on two parallel production lines in one action, greatly improving production efficiency; when the transverse sealing unit quickly impacts and tears the milk cartons, the arc surface on the edge of the induction rod can greatly buffer the transverse impact force and tearing force, thereby solving the problem of transverse sealing corner cracks. The combination of the above two advantages can not only greatly improve the transverse sealing speed of milk cartons, but also further improve the packaging quality of milk cartons. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a top view of a packaging machine according to an embodiment;

[0011] Figure 2 It is a bottom view of the packaging machine under an embodiment.

[0012] Explanation of the reference numerals: 11, frame; 12, guide rod; 13, sleeve; 14, spring; 20, push-pull unit; 31, mounting plate; 32, sensor rod; 41, metal strip; 42, groove. DETAILED DESCRIPTION

[0013] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "top", "bottom", "top surface", "bottom surface", "inside", "outside", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0014] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If the terms "first", "second", "third" are described, they are only used for the purpose of description and distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0015] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following is a description of the embodiments of the present invention based on its overall structure.

[0016] Reference Figure 1 and Figure 2 The utility model discloses a milk transverse sealing packaging machine, comprising: a frame 11, a pair of guide rods 12 arranged in the frame 11, a plurality of transverse sealing units penetrated by the guide rods 12 and slidable under the restriction of the guide rods 12, and a push-pull unit 20 driving the transverse sealing unit, the two guide rods 12 are arranged in parallel, the transverse sealing unit is provided with a sleeve 13 for increasing the contact area at the position contacting the guide rods 12, four transverse sealing units are arranged, the two transverse sealing units located on the outer side are fixedly connected to the frame 11, and the two transverse sealing units located in the middle are connected to each other so that both can be driven by the push-pull unit 20 at the same time, and when the push-pull unit 20 is extended or retracted, the two transverse sealing units located in the middle alternately fit the transverse sealing units on the corresponding sides to alternately seal the milk cartons on the two production lines.

[0017] As an improvement of the above solution, the transverse sealing unit includes a mounting plate 31 penetrated by the guide rod 12 and a sensing rod 32 fixed to the mounting plate 31. The sensing rod 32 is provided with two metal strips 41 on one side thereof for fitting the milk carton. The sensing rod 32 is provided with a groove 42 in the area between the two metal strips 41. The end of the sensing rod 32 is provided with a wiring board connected to the metal strips 41. After the two sensing rods 32 are brought close to clamp the milk carton, the sensing rods 32 are energized to heat the side of the sensing rods 32 close to each other, thereby achieving the sealing of the milk carton. Figure 1 and Figure 2As shown, the guide rod 12 passes through the middle position of the mounting plate 31 , the push-pull unit 20 is connected to the upper position of the mounting plate 31 , and the sensing rod 32 is located at the lower position of the mounting plate 31 .

[0018] As an improvement of the above solution, the upper and lower edges of the sensing rod 32 that fit the milk box and the upper and lower edges of the groove 42 are all configured as rounded surfaces, and the radius of the rounded corners is greater than 3 cm. Figure 2 As shown, one of the sensing bars 32 is provided with at least four rounded corners.

[0019] As an improvement of the above scheme, the push-pull unit includes an air pump and two air rods, the fixed ends of the air rods are installed on the frame 11, and the movable ends of the air rods are connected to the two horizontal sealing units located in the middle. When the air pump is ventilated, the two air rods extend or retract at the same time.

[0020] As an improvement of the above solution, each guide rod 12 is provided with a spring 14, the ends of which respectively abut against two adjacent sleeves 13. After the gas rod is deflated, the spring 14 pushes the two middle transverse sealing units to the middle position of the frame 11. Figure 1 As shown, when the two horizontal sealing units in the middle move to the left, the two springs 14 on the left are compressed and then subjected to a reaction force, and the two springs 14 on the right are stretched and then subjected to a reaction force. The above solution ensures that after the push-pull unit 20 is closed, the two horizontal sealing units in the middle no longer contact the two horizontal sealing units at the edge, thereby improving safety.

[0021] The push-pull unit 20 can seal the milk cartons on two parallel production lines in one action, which greatly improves the production efficiency; when the transverse sealing unit quickly impacts and tears the milk cartons, the arc surface on the edge of the induction rod 32 can greatly buffer the transverse impact force and tearing force, thereby solving the problem of transverse sealing corner cracks. The combination of the above two advantages can not only greatly improve the transverse sealing speed of milk cartons, but also further improve the packaging quality of milk cartons.

[0022] The foregoing description of specific exemplary embodiments of the utility model is for the purpose of illustration and illustration. These descriptions are not intended to limit the utility model to the precise form disclosed, and it is clear that many changes and variations can be made based on the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the utility model and its practical application, so that those skilled in the art can realize and utilize various different exemplary embodiments of the utility model and various different options and changes. The scope of the utility model is intended to be defined by the claims and their equivalents.

Claims

1. A milk horizontal sealing packaging machine, characterized in that: include: A frame, a pair of guide rods arranged in the frame, a plurality of transverse sealing units penetrated by the guide rods and slidable under the restriction of the guide rods, and a push-pull unit driving the transverse sealing units, two of the guide rods are arranged in parallel, and the transverse sealing units are provided with sleeves for increasing the contact area at the positions contacting the guide rods. Four transverse sealing units are arranged, the two transverse sealing units located on the outer sides are fixedly connected to the frame, and the two transverse sealing units located in the middle are connected to each other so that both can be driven by the push-pull unit at the same time. When the push-pull unit is extended or retracted, the two transverse sealing units located in the middle alternately fit the transverse sealing units on the corresponding sides to alternately seal the milk cartons on the two production lines.

2. The milk transverse sealing packaging machine according to claim 1, characterized in that: The horizontal sealing unit includes a mounting plate penetrated by the guide rod and a sensing rod fixed to the mounting plate. Two metal strips are provided on one side of the sensing rod for fitting the milk carton. A groove is provided in the area between the two metal strips. A terminal block connected to the metal strips is provided at the end of the sensing rod. After the two sensing rods are brought close to clamp the milk carton, electricity is applied to the sensing rods to heat up the side where the sensing rods are close to each other, thereby achieving the sealing of the milk carton.

3. The milk transverse sealing packaging machine according to claim 2, characterized in that: The upper and lower edges of the sensing rod that are attached to one side of the milk box and the upper and lower edges of the groove are all configured to be rounded surfaces, and the radius of the rounded corners is greater than 3 cm.

4. The milk transverse sealing packaging machine according to claim 1, characterized in that: The push-pull unit includes an air pump and two air rods, the fixed ends of the air rods are installed on the frame, and the movable ends of the air rods are connected to the two horizontal sealing units located in the middle. When the air pump is ventilated, the two air rods are extended or retracted at the same time.

5. The milk transverse sealing packaging machine according to claim 4, characterized in that: A spring is arranged on each guide rod, and the head and tail ends of the spring respectively abut against two adjacent sleeves. After the gas rod is deflated, the spring pushes the two middle transverse sealing units to the middle position of the frame.

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