Sealing module of packaging machine

Abstract

The utility model discloses a packaging machine sealing module which comprises an upper cam heat sealing mechanism, a lower cam heat sealing mechanism, a cam driving mechanism, an upper pre-fixing pressing plate, a lower pre-fixing pressing plate, a left opening piece and a right opening piece. The cam driving mechanism is used for driving the upper cam heat sealing mechanism and the lower cam heat sealing mechanism to be close to or away from each other, the upper pre-fixing pressing plate is located in front of the upper cam heat sealing mechanism, the lower pre-fixing pressing plate is located in front of the lower cam heat sealing mechanism, the upper pre-fixing pressing plate is connected with the upper pre-fixing air cylinder, and the lower pre-fixing pressing plate is connected with the lower pre-fixing air cylinder. The left opening piece and the right opening piece are distributed in a bilateral symmetry mode and located between the upper cam heat sealing mechanism and the lower cam heat sealing mechanism, the left opening piece is connected with the left stretching-in opening mechanism, and the right opening piece is connected with the right stretching-in opening mechanism. The sealing device can be pre-fixed, the sealing is complete, and the sealing quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging sealing equipment, in particular to a sealing module of a packaging machine. Background Art

[0002] During packaging production, after the product is pushed into the packaging bag, the packaging bag needs to be sealed. Sealing the packaging bag is an important link in the packaging production process, which is directly related to the shelf life, safety and appearance quality of the product. The sealing of aluminum foil packaging bags usually adopts the hot sealing method. However, when the existing aluminum foil bags are subjected to hot sealing operations, wrinkles are likely to appear on the upper and lower surfaces of the aluminum foil bags, resulting in uneven sealing at the sealing position, incomplete sealing, poor sealing effect and low sealing quality. Content of the Utility Model

[0003] The purpose of the utility model is to overcome the above-mentioned shortcomings of the prior art, and provide a sealing module of a packaging machine that can perform pre-fixation, complete sealing, improve the sealing performance of the seal, and improve the sealing quality.

[0004] The utility model is realized by the following technical solutions: A sealing module of a packaging machine, comprising:

[0005] An upper cam hot-sealing mechanism and a lower cam hot-sealing mechanism, and the upper cam hot-sealing mechanism and the lower cam hot-sealing mechanism are symmetrically distributed up and down;

[0006] A cam driving mechanism, and the cam driving mechanism is used to drive the upper cam hot-sealing mechanism and the lower cam hot-sealing mechanism to approach or move away from each other;

[0007] An upper pre-fixing pressing plate and a lower pre-fixing pressing plate, and the upper pre-fixing pressing plate and the lower pre-fixing pressing plate are symmetrically distributed up and down, and the upper pre-fixing pressing plate is located in front of the upper cam hot-sealing mechanism, and the lower pre-fixing pressing plate is located in front of the lower cam hot-sealing mechanism. The upper pre-fixing pressing plate is connected to an upper pre-fixing air cylinder, and the lower pre-fixing pressing plate is connected to a lower pre-fixing air cylinder;

[0008] A left spreading piece and a right spreading piece, and the left spreading piece and the right spreading piece are symmetrically distributed left and right, and the left spreading piece and the right spreading piece are located between the upper cam hot-sealing mechanism and the lower cam hot-sealing mechanism. The left spreading piece is connected to a left extending and spreading mechanism, and the right spreading piece is connected to a right extending and spreading mechanism.

[0009] Further, the upper cam heat-sealing mechanism includes an upper heat-sealing roller and an upper cam. The upper heat-sealing roller is arranged on the upper moving plate through an upper heat-sealing seat, and the upper cam is arranged on the top side of the upper heat-sealing seat. The lower cam heat-sealing mechanism includes a lower heat-sealing roller and a lower cam. The lower heat-sealing roller is arranged on the lower moving plate through a lower heat-sealing seat, and the lower cam is arranged on the bottom side of the lower heat-sealing seat. Heating tubes are respectively arranged on the upper heat-sealing roller and the lower heat-sealing roller.

[0010] Further, the upper moving plate is arranged on the slide rail through an upper slider, the lower moving plate is arranged on the slide rail through a lower slider, and the slide rail is arranged on the mounting frame.

[0011] Further, the cam driving mechanism includes a heat-sealing cylinder, a U-shaped fixing seat, an upper cam follower and a lower cam follower. The heat-sealing cylinder is connected to the middle position of the U-shaped fixing seat. The upper cam follower is arranged at the upper end of the U-shaped fixing seat, and the upper cam follower is in contact with the upper cam. The lower cam follower is arranged at the lower end of the U-shaped fixing seat, and the lower cam follower is in contact with the lower cam. The bottom of the U-shaped fixing seat is connected to the linear guide mechanism, and the linear guide mechanism is arranged on the mounting frame.

[0012] Further, a return spring is connected between the upper moving plate and the lower moving plate.

[0013] Further, the left extending and spreading mechanism includes a left extending cylinder and a left spreading cylinder. The left extending cylinder is connected to the left spreading cylinder, and the left spreading cylinder is connected to the left spreading piece.

[0014] Further, the right extending and spreading mechanism includes a right extending cylinder and a right spreading cylinder. The right extending cylinder is connected to the right spreading cylinder, and the right spreading cylinder is connected to the right spreading piece.

[0015] Further, the linear guide mechanism includes a linear guide rail and a slide block. The linear guide rail is arranged on the mounting frame, the slide block is arranged on the linear guide rail, and the slide block is connected to the bottom of the U-shaped fixing seat.

[0016] Further, a height adjusting mechanism is further included. The height adjusting mechanism includes an adjusting seat, a lead screw, a nut assembly, a driving plate and a driving rod. The lead screw is arranged on the adjusting seat through the nut assembly. The driving plate is rotatably connected to the lead screw. The lead screw is connected to a hand wheel. The driving rod is movably arranged on the adjusting seat. The bottom end of the driving plate is connected to the driving plate, and the top end of the driving rod is connected to the bottom of the mounting frame.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] The utility model first expands the aluminum foil bag through the left expansion piece and the right expansion piece, making the upper and lower surfaces of the aluminum foil bag flat, and then presses the aluminum foil bag through the cooperation of the upper pre-fixing pressing plate and the lower pre-fixing pressing plate, so as to pre-fix the expanded aluminum foil bag, avoiding wrinkles at the sealing part of the aluminum foil bag after the left expansion piece and the right expansion piece are retracted. Finally, the upper heat-sealing roller and the lower heat-sealing roller are used to heat-seal the pre-fixed aluminum foil bag, so as to realize heat-sealing under the condition that the upper and lower surfaces at the sealing part of the aluminum foil bag are flat, making the sealing complete and improving the sealing performance and the quality of the seal. Description of the Drawings

[0019] Figure 1 is a schematic structural view of the utility model;

[0020] Figure 2 is a front view of the utility model;

[0021] Figure 3 is a side view of the utility model;

[0022] Figure 4 is Figure 2 a sectional view taken along line A-A;

[0023] Figure 5 is Figure 2 a sectional view taken along line B-B;

[0024] Figure 6 is a schematic structural view of the upper cam heat-sealing mechanism and the lower cam heat-sealing mechanism of the utility model;

[0025] Figure 7 is a front view of the upper cam heat-sealing mechanism and the lower cam heat-sealing mechanism of the utility model;

[0026] Figure 8 is Figure 7 a sectional view taken along line C-C;

[0027] Figure 9 is a schematic structural view of the left insertion expansion mechanism and the right insertion expansion mechanism of the utility model;

[0028] Figure 10 is a schematic structural view of the height adjustment mechanism of the utility model;

[0029] Figure 11 is a schematic diagram of the process of sealing the aluminum foil bag of the utility model.

[0030] Description of reference numerals: 1 - upper cam heat-sealing mechanism, 2 - lower cam heat-sealing mechanism, 3 - cam driving mechanism, 4 - upper pre-fixed pressing plate, 5 - lower pre-fixed pressing plate, 6 - upper pre-fixed cylinder, 7 - lower pre-fixed cylinder, 8 - left spreading piece, 9 - right spreading piece, 10 - left extending and spreading mechanism, 11 - right extending and spreading mechanism, 12 - upper heat-sealing roller, 13 - upper cam, 14 - upper heat-sealing seat, 15 - upper moving plate, 16 - lower heat-sealing roller, 17 - lower cam, 18 - lower heat-sealing seat, 19 - lower moving plate, 20 - heating pipe, 21 - upper slider, 22 - slide rail, 23 - lower slider, 24 - mounting bracket, 25 - heat-sealing cylinder, 26 - U-shaped fixing seat, 27 - upper cam follower, 28 - lower cam follower, 29 - linear guide mechanism, 30 - return spring, 31 - left extending cylinder, 32 - left spreading cylinder, 33 - right extending cylinder, 34 - right spreading cylinder, 35 - linear guide rail, 36 - slide seat, 37 - height adjusting mechanism, 38 - adjusting seat, 39 - lead screw, 40 - nut assembly, 41 - driving plate, 42 - driving rod, 43 - hand wheel, 44 - aluminum foil bag. Detailed implementation manners

[0031] Figures 1 to 11 The following is a schematic structural diagram of an embodiment of a sealing module of a packaging machine provided by the present utility model, including:

[0032] The upper cam heat-sealing mechanism 1 and the lower cam heat-sealing mechanism 2, and the upper cam heat-sealing mechanism 1 and the lower cam heat-sealing mechanism 2 are symmetrically distributed up and down.

[0033] The cam driving mechanism 3 is used to drive the upper cam heat-sealing mechanism 1 and the lower cam heat-sealing mechanism 2 to approach or move away from each other.

[0034] The upper pre-fixed pressing plate 4 and the lower pre-fixed pressing plate 5, the upper pre-fixed pressing plate 4 and the lower pre-fixed pressing plate 5 are symmetrically distributed up and down, and the upper pre-fixed pressing plate 4 is located in front of the upper cam heat-sealing mechanism 1, and the lower pre-fixed pressing plate 5 is located in front of the lower cam heat-sealing mechanism 2. The upper pre-fixed pressing plate 4 is connected to the upper pre-fixed cylinder 6, and the lower pre-fixed pressing plate 5 is connected to the lower pre-fixed cylinder 7.

[0035] The left spreading piece 8 and the right spreading piece 9, the left spreading piece 8 and the right spreading piece 9 are symmetrically distributed left and right, and the left spreading piece 8 and the right spreading piece 9 are located between the upper cam heat-sealing mechanism 1 and the lower cam heat-sealing mechanism 2. The left spreading piece 8 is connected to the left extending and spreading mechanism 10, and the right spreading piece 9 is connected to the right extending and spreading mechanism 11.

[0036] The upper cam heat-sealing mechanism 1 includes an upper heat-sealing roller 12 and an upper cam 13. The upper heat-sealing roller 12 is arranged on the upper moving plate 15 through an upper heat-sealing seat 14, and the upper cam 13 is arranged on the top side of the upper heat-sealing seat 14. The lower cam heat-sealing mechanism 2 includes a lower heat-sealing roller 16 and a lower cam 17. The lower heat-sealing roller 16 is arranged on the lower moving plate 19 through a lower heat-sealing seat 18, and the lower cam 17 is arranged on the bottom side of the lower heat-sealing seat 18. Heating tubes 20 are respectively arranged on the upper heat-sealing roller 12 and the lower heat-sealing roller 16.

[0037] The upper moving plate 15 is arranged on the slide rail 22 through an upper slider 21, and the lower moving plate 19 is arranged on the slide rail 22 through a lower slider 23. The slide rail 22 is arranged on the mounting frame 24.

[0038] The cam driving mechanism 3 includes a heat-sealing cylinder 25, a U-shaped fixing seat 26, an upper cam follower 27 and a lower cam follower 28. The middle position of the heat-sealing cylinder 25 is connected to the U-shaped fixing seat 26. The upper cam follower 27 is arranged at the upper end of the U-shaped fixing seat 26, and the upper cam follower 27 is in contact with the upper cam 13. The lower cam follower 28 is arranged at the lower end of the U-shaped fixing seat 26, and the lower cam follower 28 is in contact with the lower cam 17. The bottom of the U-shaped fixing seat 26 is connected to the linear guide mechanism 29, and the linear guide mechanism 29 is arranged on the mounting frame 24.

[0039] A return spring 30 is connected between the upper moving plate 15 and the lower moving plate 19.

[0040] The left extending and spreading mechanism 10 includes a left extending cylinder 31 and a left spreading cylinder 32. The left extending cylinder 31 is connected to the left spreading cylinder 32, and the left spreading cylinder 32 is connected to the left spreading piece 8.

[0041] The right extending and spreading mechanism 11 includes a right extending cylinder 33 and a right spreading cylinder 34. The right extending cylinder 33 is connected to the right spreading cylinder 34, and the right spreading cylinder 34 is connected to the right spreading piece 9.

[0042] The linear guide mechanism 29 includes a linear guide rail 35 and a sliding seat 36. The linear guide rail 35 is arranged on the mounting frame 24, the sliding seat 36 is arranged on the linear guide rail 35, and the sliding seat 36 is connected to the bottom of the U-shaped fixing seat 26.

[0043] During operation, after the aluminum foil bag 44 is conveyed to the sealing station by the station conveyor belt (not shown in the figure), the left extension cylinder 31 drives the left expansion cylinder 32 to drive the left expansion piece 8 to extend into the aluminum foil bag 44. At the same time, the right extension cylinder 33 drives the right expansion cylinder 34 to drive the right expansion piece 9 to extend into the aluminum foil bag 44. Then, the left expansion cylinder 32 drives the left expansion piece 8 to move away from the right expansion piece 9, and at the same time, the right expansion cylinder 34 drives the right expansion piece 9 to move away from the left expansion piece 8, thereby expanding the aluminum foil bag 44 to make the upper and lower surfaces of the aluminum foil bag 44 flat. Next, the upper pre-fixing cylinder 6 drives the upper pre-fixing pressing plate 4 to press down, and the lower pre-fixing cylinder 7 drives the lower pre-fixing pressing plate 5 to rise. The aluminum foil bag 44 is tightly pressed through the cooperation of the upper pre-fixing pressing plate 4 and the lower pre-fixing pressing plate 5. The left extension cylinder 31 drives the left expansion cylinder 32 to drive the left expansion piece 8 to retract and leave the aluminum foil bag 44. At the same time, the right extension cylinder 33 drives the right expansion cylinder 34 to drive the right expansion piece 9 to retract and leave the aluminum foil bag 44. The heat-sealing cylinder 25 drives the U-shaped fixing seat 26 to move along the linear guide rail 35 and drives the upper cam follower 27 and the lower cam follower 28 to move forward. The upper cam follower 27 drives the upper cam 13 to drive the upper heat-sealing roller 12 to press down, and at the same time, the lower cam follower 28 drives the lower cam 17 to drive the lower heat-sealing roller 16 to press up, so that the upper heat-sealing roller 12 and the lower heat-sealing roller 16 are closed and pressed tightly against the aluminum foil bag 44 to complete the sealing of the aluminum foil bag 44. At this time, the return spring 30 is compressed. After the sealing is completed, the heat-sealing cylinder 25 retracts. Under the acting force of the return spring 30 recovering its deformation, the upper moving plate 15 and the lower moving plate 19 are pushed to move in the direction away from each other, so that the upper cam 13 and the lower cam 17 are reset, thus completing a sealing cycle.

[0044] It further includes a height adjustment mechanism 37. The height adjustment mechanism 37 includes an adjustment seat 38, a lead screw 39, a nut assembly 40, a drive plate 41, and a drive rod 42. The lead screw 39 is arranged on the adjustment seat 38 through the nut assembly 40. The drive plate 41 is rotatably connected to the lead screw 39. The lead screw 39 is connected with a hand wheel 43. The drive rod 42 is movably arranged on the adjustment seat 38, and the bottom end of the drive plate 41 is connected to the drive plate 41, and the top end of the drive rod 42 is connected to the bottom of the mounting bracket 24.

[0045] When the height needs to be adjusted, rotate the hand wheel 43 to drive the lead screw 39 to rotate. Under the action of the nut assembly 40, the lead screw 39 makes a lifting movement. The lead screw 39 drives the drive plate 41 to lift and lower. The drive plate 41 drives the mounting bracket 24 to lift and lower through the drive plate 41, thereby realizing the adjustment of the height and making the connection height before and after consistent.

[0046] The above detailed description is for the specific description of the feasible embodiments of the present invention. This embodiment is not intended to limit the patent scope of the present invention. Any equivalent implementation or modification without departing from the present invention should be included in the patent scope of this case.

Claims

1. A sealing module of a packaging machine, characterized in that, Comprising: An upper cam heat-sealing mechanism and a lower cam heat-sealing mechanism, the upper cam heat-sealing mechanism and the lower cam heat-sealing mechanism being symmetrically distributed up and down; A cam driving mechanism for driving the upper cam heat-sealing mechanism and the lower cam heat-sealing mechanism to approach or move away from each other; An upper pre-fixing pressing plate and a lower pre-fixing pressing plate, the upper pre-fixing pressing plate and the lower pre-fixing pressing plate being symmetrically distributed up and down, and the upper pre-fixing pressing plate being located in front of the upper cam heat-sealing mechanism, the lower pre-fixing pressing plate being located in front of the lower cam heat-sealing mechanism, the upper pre-fixing pressing plate being connected to an upper pre-fixing air cylinder, and the lower pre-fixing pressing plate being connected to a lower pre-fixing air cylinder; A left expanding piece and a right expanding piece, the left expanding piece and the right expanding piece being symmetrically distributed left and right, and the left expanding piece and the right expanding piece being located between the upper cam heat-sealing mechanism and the lower cam heat-sealing mechanism, the left expanding piece being connected to a left extending and expanding mechanism, and the right expanding piece being connected to a right extending and expanding mechanism.

2. The sealing module of a packaging machine according to claim 1, wherein The upper cam heat-sealing mechanism includes an upper heat-sealing roller and an upper cam, the upper heat-sealing roller being arranged on an upper moving plate through an upper heat-sealing seat, the upper cam being arranged on the top side of the upper heat-sealing seat, the lower cam heat-sealing mechanism includes a lower heat-sealing roller and a lower cam, the lower heat-sealing roller being arranged on a lower moving plate through a lower heat-sealing seat, the lower cam being arranged on the bottom side of the lower heat-sealing seat, and heating tubes being respectively arranged on the upper heat-sealing roller and the lower heat-sealing roller.

3. The sealing module of a packaging machine according to claim 2, characterized in that, The upper moving plate is arranged on a slide rail through an upper slider, the lower moving plate is arranged on the slide rail through a lower slider, and the slide rail is arranged on a mounting frame.

4. The sealing module of a packaging machine according to claim 3, characterized in that, The cam driving mechanism includes a heat-sealing air cylinder, a U-shaped fixing seat, an upper cam follower, and a lower cam follower. The heat-sealing air cylinder is connected to the middle position of the U-shaped fixing seat. The upper cam follower is arranged at the upper end of the U-shaped fixing seat and is in contact with the upper cam. The lower cam follower is arranged at the lower end of the U-shaped fixing seat and is in contact with the lower cam. The bottom of the U-shaped fixing seat is connected to a linear guide mechanism, and the linear guide mechanism is arranged on the mounting frame.

5. The sealing module of a packaging machine according to claim 4, wherein, A return spring is connected between the upper moving plate and the lower moving plate.

6. The sealing module of a packaging machine according to claim 4, characterized in that, The left extending and expanding mechanism includes a left extending air cylinder and a left expanding air cylinder, the left extending air cylinder being connected to the left expanding air cylinder, and the left expanding air cylinder being connected to the left expanding piece.

7. The sealing module of a packaging machine according to claim 6, wherein The right extending and expanding mechanism includes a right extending air cylinder and a right expanding air cylinder, the right extending air cylinder being connected to the right expanding air cylinder, and the right expanding air cylinder being connected to the right expanding piece.

8. The sealing module of a packaging machine according to claim 7, wherein, The linear guide mechanism includes a linear guide rail and a sliding seat. The linear guide rail is arranged on the mounting frame, the sliding seat is arranged on the linear guide rail, and the sliding seat is connected to the bottom of the U-shaped fixing seat.

9. The sealing module of a packaging machine according to claim 8, wherein It further includes a height adjustment mechanism, and the height adjustment mechanism includes an adjustment seat, a lead screw, a nut assembly, a drive plate, and a drive rod. The lead screw is arranged on the adjustment seat through the nut assembly. The drive plate is rotatably connected to the lead screw, and the lead screw is connected with a handwheel. The drive rod is movably arranged on the adjustment seat, and the bottom end of the drive plate is connected to the drive plate, and the top end of the drive rod is connected to the bottom of the mounting bracket.

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