Sealing mechanism of heat sealing machine

Abstract

The utility model is suitable for the technical field of heat sealing machines, and provides a sealing mechanism of a heat sealing machine. A flat plate heat sealing mechanism is mounted above the fixed seat; a bidirectional movement mechanism is mounted above the fixed seat; the bidirectional movement mechanism is located on one side of the flat plate heat-sealing mechanism. The two-way movement mechanism is provided with two matched bag opening mechanisms; the upper part of the bottom plate is rotationally connected with a vertical first bidirectional lead screw; the first left-handed nut and the first right-handed nut are respectively provided with a horizontal supporting rod; the two supporting rods are arranged on a U-shaped guide rod fixed on the bottom plate; a rotating shaft of the first driver is provided with a first gear; a second gear matched with the first gear is arranged at the bottom of the first bidirectional lead screw; the top of the first gear is fixedly connected with one end of a horizontal rotating plate, and therefore heat sealing can be conducted on a material bag, the probability that the heat sealing position of the material bag deforms and is folded is reduced, and the problem that M-shaped bag opening modeling fails is avoided.

Description

Technical Field

[0001] This utility model relates to the field of heat sealing machine technology, and in particular to a sealing mechanism for a heat sealing machine. Background Technology

[0002] The existing technology disclosure number is CN211969917U, which discloses a utility model patent for a multi-functional heat-sealing mechanism for a secondary bagging machine. The mechanism includes a base, a heat-sealing mechanism, a sealing mechanism, and a guide rail. The heat-sealing mechanism comprises an upper heat-sealing mechanism and a lower heat-sealing mechanism, which are respectively installed on the upper and lower sides of the base. The sealing mechanism comprises a right sealing mechanism and a left sealing mechanism, which are respectively installed on the left and right sides of the guide rail, which is mounted on a mounting plate on the base. This utility model's heat-sealing mechanism can simultaneously seal material bags with both straight and M-shaped sides, solving the adaptability problem of sealing devices in secondary bagging equipment and greatly improving packaging efficiency.

[0003] Although the aforementioned patents can seal material bags with both straight and M-shaped sides, they cannot unfold the straight material bag when sealing the straight side. When the two heat-sealing mechanisms compress the material bag during sealing, the bag is prone to deformation and folding, resulting in poor sealing at the deformed and folded locations. The M-shaped side is created solely by two opposing sealing plates (e.g.,...). Figure 6 If the material bag is not pre-made with M-shaped indentations, the M-shaped stoma is prone to failure. Utility Model Content

[0004] To address the aforementioned shortcomings, the purpose of this utility model is to provide a heat-sealing machine sealing mechanism that can heat-seal material bags. When the two bag-supporting mechanisms are far apart, they can open the bag opening, reducing the probability of deformation and folding at the heat-sealing position of the material bag. The rotating plate and the two support rods can pre-shape the M-shaped bag opening, avoiding the problem of M-shaped bag opening shape failure.

[0005] To achieve the above objectives, this utility model provides a sealing mechanism for a heat sealing machine, including a fixed base; a flat heat sealing mechanism is mounted above the fixed base; a bidirectional motion mechanism is mounted above the fixed base; the bidirectional motion mechanism is located on one side of the flat heat sealing mechanism; the bidirectional motion mechanism is provided with two cooperating bag-supporting mechanisms; the two bag-supporting mechanisms are mirror-symmetrical.

[0006] The bag-supporting mechanism is provided with a base plate; a vertical first bidirectional lead screw is rotatably connected above the base plate; the first bidirectional lead screw is provided with a first left-hand nut and a first right-hand nut; the first left-hand nut and the first right-hand nut are respectively provided with horizontal support rods; the two support rods are provided with U-shaped guide rods fixed on the base plate; the base plate is fixedly connected to a first driver; the rotating shaft of the first driver is provided with a first gear; a second gear that meshes with the first gear is provided at the bottom of the first bidirectional lead screw; one end of a horizontal rotating plate is fixedly connected to the top of the first gear; the rotating plate is located on a horizontal plane at the middle position of the two support rods.

[0007] According to the sealing mechanism of the heat sealing machine of this utility model, the lower heat sealing plate of the flat heat sealing mechanism is fixed on the fixed base; the lower heat sealing plate is provided with a matching upper heat sealing plate; the fixed base is fixedly connected to two guide columns; the two ends of the upper heat sealing plate are respectively slidably connected to two guide columns; the upper heat sealing plate is fixedly connected to a lead screw nut; the lead screw nut is provided with a matching one-way lead screw; the one-way lead screw rotates under the drive of a second driver, and the second driver is fixedly connected to the fixed base.

[0008] According to the sealing mechanism of the heat sealing machine of this utility model, the second bidirectional screw of the bidirectional motion mechanism is horizontally arranged; the two ends of the second bidirectional screw are respectively rotatably connected to the fixed base; the second bidirectional screw is provided with a third driver fixed on the fixed base; the second bidirectional screw is respectively provided with a second left-hand nut and a second right-hand nut; the second left-hand nut and the second right-hand nut are both slidably connected to the fixed base.

[0009] According to the sealing mechanism of the heat sealing machine of this utility model, the fixed base is provided with a T-shaped slide rail; the second left-hand nut and the second right-hand nut are both provided with T-shaped slide grooves.

[0010] According to the sealing mechanism of the heat sealing machine of this utility model, both the unidirectional lead screw and the top of the guide column are provided with a stop block.

[0011] According to the sealing mechanism of the heat sealing machine of this utility model, the four support rods are provided with clearance space from the heat sealing position of the bag opening; the two rotating plates are provided with clearance space from the heat sealing position of the bag opening.

[0012] This utility model provides a sealing mechanism for a heat sealing machine, including a fixed base. A flat heat sealing mechanism is installed above the fixed base, which heat seals the material bag, improving its sealing. A bidirectional motion mechanism is installed above the fixed base, located on one side of the flat heat sealing mechanism. This mechanism allows two bag-supporting mechanisms to move away or towards each other synchronously, facilitating positional changes. The bidirectional motion mechanism has two cooperating bag-supporting mechanisms. When the two mechanisms move away synchronously, they support the bag opening, flattening it and preventing folding at the heat-sealing point, thus improving the sealing effect. The two bag-supporting mechanisms are mirror-symmetrical, ensuring that the two pairs of support rods are always positioned between the two rotating plates. This prevents the support rods from obstructing the rotation of the rotating plates when supporting the outer side of the material bag, and allows the support rods to support the inner side of the bag while the rotating plates support the outer side. The bag-supporting mechanism has a base plate, with a vertical first bidirectional screw rotatably connected above it. This screw allows two nuts to move towards or away synchronously, with the two nuts reaching their closest point... When positioned, the two support rods are close together, facilitating the support and unfolding of the bag opening when creating a flat and straight side. This helps reduce the impact of the support rods on the distance between the upper and lower sides of the bag opening when they are opened. The first bidirectional screw is equipped with a first left-hand nut and a first right-hand nut, which can move away or closer synchronously with the first bidirectional screw, helping to create a gap between the two support rods. The first left-hand nut and the first right-hand nut are each equipped with a horizontal support rod, which helps to open the bag opening. The two support rods are equipped with U-shaped guide rods fixed to the base plate. The U-shaped guide rods prevent the support rods from rotating and facilitate the lifting and lowering movement of the first left-hand nut and the first right-hand nut. The base plate is fixedly connected to a first driver, and the rotating shaft of the first driver is equipped with a first gear. The bottom of the first bidirectional screw is equipped with a second gear that meshes with the first gear. The top of the first gear is fixedly connected to one end of a horizontal rotating plate, which is located on a horizontal plane between the two support rods. The first driver can drive the rotation of the rotating plate and the first bidirectional screw, which helps the rotating plate cooperate with the two support plates to form an M-shaped side of the bag. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a second-view structural schematic diagram of the present invention;

[0015] Figure 3 yes Figure 2 Schematic diagram of Part A;

[0016] Figure 4 This is a schematic diagram of the bag-supporting mechanism;

[0017] Figure 5 yes Figure 3 A schematic diagram of the structure of part B;

[0018] Figure 6 This is a schematic diagram of the M-shaped side pocket structure;

[0019] In the diagram: 1-fixed base, 2-lower heat-sealing plate, 3-upper heat-sealing plate, 4-one-way lead screw, 5-guide column, 6-stop block, 7-third driver, 8-second double-way lead screw, 9-T-shaped slide rail, 10-second left-hand nut, 11-second right-hand nut, 12-U-shaped guide rod, 13-base plate, 14-rotating plate, 15-support rod, 16-second gear, 17-first gear, 18-first driver, 19-first double-way lead screw, 20-first left-hand nut, 21-first right-hand nut, 22-second driver. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model.

[0021] See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5This utility model provides a sealing mechanism for a heat sealing machine. The sealing mechanism includes a fixed base 1, with a flat heat sealing mechanism mounted above the fixed base 1. The flat heat sealing mechanism heats and seals the opening of a material bag. A bidirectional motion mechanism is mounted above the fixed base 1, located on one side of the flat heat sealing mechanism. The bidirectional motion mechanism has two cooperating bag-supporting mechanisms, which can synchronously move away from or towards each other under the action of the bidirectional motion mechanism. The two bag-supporting mechanisms are mirror-symmetrical, ensuring that the two pairs of support rods 15 are located within the two rotating plates 14. This facilitates the support rods 15 supporting the inner side of the material bag, and also facilitates the rotating plates 14 supporting the outer side of the material bag after rotation. The bag-supporting mechanism is equipped with a base plate 13. A vertical first bidirectional lead screw 19 is rotatably connected above the base plate 13. The first bidirectional lead screw 19 is equipped with a first left-hand nut 20 and a first right-hand nut 21. The first left-hand nut 20 and the first right-hand nut 21 are respectively fixedly connected to two horizontal support rods 15. The support rods 15 are used to open the bag opening. Part of the support rod 15 is located inside the bag opening of the material bag. When the two bag-supporting mechanisms are far apart, the support rods 15 can support the bag opening so that the two ends of the bag opening are flattened, avoiding wrinkles in the material bag during heat sealing that affect the sealing effect. The two support rods 15 located on the same vertical plane are equipped with a U-shaped guide rod 12 fixed on the base plate 13. The two support rods 15 are located in the middle of the U-shaped guide rod 12, which restricts the two support rods. The rotation of 15 prevents the first left-hand nut 20 and the first right-hand nut 21 from rotating with the first bidirectional screw 19. The base plate 13 is fixedly connected to the first driver 18. The rotating shaft of the first driver 18 is provided with the first gear 17. The bottom of the first bidirectional screw 19 is provided with the second gear 16 that cooperates with the first gear 17. The top of the first gear 17 is fixedly connected to one end of the horizontal rotating plate 14. The rotating plate 14 is located on the horizontal plane between the two support rods 15. When the first driver 18 drives one end of the rotating plate 14 to rotate and approach the material bag, the two support rods 15 move away to form a channel through which the rotating plate 14 can pass. When the rotating plate 14 passes through the gap between the two support rods 15, the two support rods 15 cooperate with the rotating plate 14 to make the material bag form an M-shaped side.

[0022] See Figure 1 , Figure 2 , Figure 3Furthermore, in this utility model, the lower heat-sealing plate 2 of the flat heat-sealing mechanism is fixed on the fixed base 1. The lower heat-sealing plate 2 is equipped with a matching upper heat-sealing plate 3. The upper heat-sealing plate 3 and the lower heat-sealing plate 2 work together to heat-seal the bag opening of the material bag. The four support rods 15 have clearance space from the bag opening heat-sealing position, and the two rotating plates 14 have clearance space from the bag opening heat-sealing position. When the upper heat-sealing plate 3 and the lower heat-sealing plate 2 work together to heat-seal the bag opening of the material bag, there is no interference with the support rods 15 and the rotating plates 14. The fixed base 1 is fixedly connected to two guide columns 5. The two ends of the upper heat-sealing plate 3 are slidably connected to the two guide columns 5 respectively. The guide columns 5 can restrict the movement direction of the upper heat-sealing plate 3 to the vertical direction. The upper heat-sealing plate 3 is fixedly connected to a screw nut. The screw nut is equipped with a matching one-way screw 4. The one-way screw 4 rotates under the drive of the second driver 22. The second driver 22 is fixedly connected to the fixed base 1. The rotation of the one-way screw 4 can make the upper heat-sealing plate 3 move up or down. The second bidirectional lead screw 8 of the bidirectional motion mechanism is horizontally positioned, with both ends rotatably connected to the fixed base 1. A third driver 7 is fixed to the fixed base 1 on the second bidirectional lead screw 8. The second bidirectional lead screw 8 is fitted with a second left-hand nut 10 and a second right-hand nut 11. The two base plates 13 of the two bag-supporting mechanisms are fixedly connected above the second left-hand nut 10 and the second right-hand nut 11, respectively. Both the second left-hand nut 10 and the second right-hand nut 11 are slidably connected to the fixed base 1 to prevent rotation. The fixed base 1 is equipped with a T-shaped slide rail 9, and both the second left-hand nut 10 and the second right-hand nut 11 are equipped with T-shaped grooves. Stops 6 are provided at the top of both the unidirectional lead screw 4 and the guide column 5 to prevent the upper heat-sealing plate 3 from detaching from the guide column 5.

[0023] Working principle: The support rod 15 is placed inside the opening of the material bag. When a flat side is formed, the two pairs of support rods 15 are spaced apart to open the opening of the material bag, preventing folding at the heat-sealing position. When an M-shaped side is formed, after the two bag-opening mechanisms are spaced apart to open the opening of the material bag, the first driver 18 drives the rotating plate 14 and the first bidirectional lead screw 19 to rotate. The two support rods 15 on the first bidirectional lead screw 19 are spaced apart, and the two bag-opening mechanisms are close together to avoid stretching the material bag. One end of the rotating plate 14 rotates to the outside of the material bag, pressing the material bag between the two support rods 15, so that the material bag forms an M-shaped side.

[0024] In summary, this utility model provides a sealing mechanism for a heat sealing machine, including a fixed base. A flat heat sealing mechanism is installed above the fixed base, which heat seals the material bag, improving its sealing. A bidirectional motion mechanism is installed above the fixed base, located on one side of the flat heat sealing mechanism. This mechanism allows two bag-supporting mechanisms to move away or towards each other synchronously, facilitating positional changes. The bidirectional motion mechanism has two cooperating bag-supporting mechanisms. When these mechanisms move away synchronously, they support the bag opening, flattening it and preventing folding at the heat-sealing point, thus improving the sealing effect. The two bag-supporting mechanisms are mirror-symmetrical, ensuring that the two pairs of support rods are always positioned between the two rotating plates. This prevents the support rods from obstructing the rotation of the rotating plates when supporting the outer side of the material bag, and allows the support rods to support the inner side of the bag while the rotating plates support the outer side. The bag-supporting mechanism has a base plate, with a vertical first bidirectional screw rotatably connected above it. This screw allows two nuts to move closer or further away synchronously. When the two support rods are in their closest position, they fit together to facilitate the support and unfolding of the bag opening when creating a flat side, reducing the impact of the support rods on the distance between the upper and lower sides of the bag opening. The first bidirectional screw is equipped with a first left-hand nut and a first right-hand nut, which can move synchronously away from or towards each other under the action of the first bidirectional screw, creating a gap between the two support rods. The first left-hand nut and the first right-hand nut are each equipped with a horizontal support rod, which helps to open the bag opening. The two support rods are fixed to a U-shaped guide rod on the base plate, preventing rotation of the support rods and facilitating the lifting and lowering movement of the first left-hand nut and the first right-hand nut. The base plate is fixedly connected to a first driver, whose rotating shaft is equipped with a first gear. The bottom of the first bidirectional screw is equipped with a second gear that meshes with the first gear. The top of the first gear is fixedly connected to one end of a horizontal rotating plate, which is located on a horizontal plane between the two support rods. The first driver can drive the rotation of the rotating plate and the first bidirectional screw, allowing the rotating plate to mesh with the two support plates to form an M-shaped side of the bag.

[0025] Of course, there may be other embodiments of this utility model. Without departing from the spirit and essence of this utility model, those skilled in the art can make various corresponding changes and modifications based on this utility model, but these corresponding changes and modifications should all fall within the protection scope of the appended claims of this utility model.

Claims

1. A sealing mechanism for a heat sealing machine, characterized in that, The device includes a fixed base; a flat plate heat sealing mechanism is mounted above the fixed base; a bidirectional motion mechanism is mounted above the fixed base; the bidirectional motion mechanism is located on one side of the flat plate heat sealing mechanism; the bidirectional motion mechanism is equipped with two cooperating bag-supporting mechanisms; the two bag-supporting mechanisms are mirror-symmetrical. The bag-supporting mechanism is provided with a base plate; a vertical first bidirectional lead screw is rotatably connected above the base plate; the first bidirectional lead screw is provided with a first left-hand nut and a first right-hand nut. The first left-hand nut and the first right-hand nut are respectively provided with horizontal support rods; the two support rods are provided with U-shaped guide rods fixed on the base plate; the base plate is fixedly connected to the first driver; the rotating shaft of the first driver is provided with a first gear; the bottom of the first bidirectional lead screw is provided with a second gear that cooperates with the first gear; the top of the first gear is fixedly connected to one end of a horizontal rotating plate; the rotating plate is located on a horizontal plane at the middle position of the two support rods.

2. The sealing mechanism of the heat sealing machine according to claim 1, characterized in that, The lower heat-sealing plate of the flat plate heat-sealing mechanism is fixed on the fixed base; the lower heat-sealing plate is provided with a matching upper heat-sealing plate; the fixed base is fixedly connected to two guide columns; the two ends of the upper heat-sealing plate are respectively slidably connected to two guide columns; the upper heat-sealing plate is fixedly connected to a lead screw nut; the lead screw nut is provided with a matching one-way lead screw; the one-way lead screw rotates under the drive of a second driver, and the second driver is fixedly connected to the fixed base.

3. The sealing mechanism of the heat sealing machine according to claim 1, characterized in that, The second bidirectional lead screw of the bidirectional motion mechanism is horizontally arranged; both ends of the second bidirectional lead screw are rotatably connected to the fixed base respectively; the second bidirectional lead screw is provided with a third driver fixed on the fixed base; the second bidirectional lead screw is provided with a second left-hand nut and a second right-hand nut respectively; the second left-hand nut and the second right-hand nut are both slidably connected to the fixed base.

4. The sealing mechanism of the heat sealing machine according to claim 3, characterized in that, The fixed base is provided with a T-shaped slide rail; both the second left-hand nut and the second right-hand nut are provided with T-shaped slide grooves.

5. The sealing mechanism of the heat sealing machine according to claim 2, characterized in that, Both the unidirectional lead screw and the top of the guide column are equipped with a stop block.

6. The sealing mechanism of the heat sealing machine according to claim 1, characterized in that, The four support rods have clearance between themselves and the heat-sealing position of the bag opening; the two rotating plates have clearance between themselves and the heat-sealing position of the bag opening.

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