Non-slitter-edge packaging sealing mechanism of modified atmosphere packaging machine

Abstract

The utility model discloses a waste-edge-free packaging sealing mechanism of a modified atmosphere packaging machine, an upper die base assembly comprises an upper die plate and a film pressing frame, the film pressing frame is provided with two openings, the edge of the film pressing frame is connected with the upper die plate through a first spring column, a first sealing and cutting device and a second sealing and cutting device are arranged between the film pressing frame and the upper die plate, and the first sealing and cutting device and the second sealing and cutting device are connected with the upper die plate through a second spring column. The first sealing and cutting device and the second sealing and cutting device each comprise a heat sealing plate and an annular cutter, and the annular cutters are arranged on the peripheries of the heat sealing plates in a surrounding mode and movably connected to the upper die plate through second spring columns. After improvement, vacuum replacement is carried out before cutting, so that the sealing and packaging quality is greatly improved, and waste edges are reduced.

Description

Technical Field

[0001] The utility model relates to the field of sealing mechanisms, in particular to a waste-edge-free packaging sealing mechanism for a modified atmosphere packaging machine. Background Art

[0002] The packaging box is a commonly used device in the field of food packaging, and packaging film is needed to seal the food during packaging. A packaging machine is needed to seal the packaging film on the packaging box. The packaging machine has a cutter and a hot head. During the packaging process, the packaging film is first sealed to the packaging box with the hot head, and then the packaging film is cut with the cutter. When the existing packaging machine seals the packaging film on the packaging box, the size of the annular cutter is larger than the size of the outer contour of the packaging box, resulting in the cut packaging film being larger than the packaging box, resulting in waste edges on the packaging box after packaging. The existence of waste edges affects the appearance and wastes the packaging film. In addition, during transportation, gaps are easily generated between the waste edges and the packaging box, resulting in damage to the packaging film on the packaging box. Utility Model Content

[0003] The utility model aims to provide a packaging sealing mechanism without waste edges for a modified atmosphere packaging machine, so as to solve the problems raised in the above-mentioned background technology, which has the advantages of no waste edges and better packaging quality.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a waste-edge packaging sealing mechanism of a modified atmosphere packaging machine, comprising a workbench, the workbench is equipped with a driving cylinder, the driving cylinder is connected to a connecting plate, the connecting plate is connected to a vacuum chamber through a connecting spring, an upper die seat assembly is installed in the vacuum chamber, a lower die seat assembly is arranged below the vacuum chamber, the lower die seat assembly comprises a lower film frame with two placement grooves, an annular step is arranged at the notch of the placement groove, the upper die seat assembly comprises an upper mold plate and a film pressing frame, the film pressing frame is provided with two openings, and the edge of the film pressing frame is provided with a plurality of openings. It is connected to the upper template through spring column one, and a sealing and cutting device one and a sealing and cutting device two are provided between the film pressing frame and the upper template. The sealing and cutting device one and the sealing and cutting device two both include a heat sealing plate and an annular cutter. The annular cutter is arranged around the outer periphery of the heat sealing plate. The annular cutter is movably connected to the upper template through spring column two, and the heat sealing plate is movably connected to the upper template through spring column three. An annular convex edge is provided at the upper ends of the two annular cutters, and the annular convex edge connects the two annular cutters into one body. Six lugs are provided along the circumference of the annular convex edge, and limiting nails are provided on the lugs. The limiting nails are located above the film pressing frame.

[0005] Preferably, a threaded hole is provided on the lug, and the limiting pin is fixed in the threaded hole by threaded engagement.

[0006] Preferably, the spring column one, the spring column two and the spring column three all include a column body and a spring sleeved outside the column body.

[0007] As a further solution of the utility model: both ends of the connecting plate are integrally connected with a first limiting rod, and the first limiting rod passes through the workbench.

[0008] By adopting the above technical solution, the first limiting rod plays a role in limiting the movement track of the connecting plate.

[0009] As a further solution of the utility model: the connecting plate is penetrated by an adjusting bolt which is threadedly connected to the connecting plate, an adjusting plate is arranged between the connecting plate and the connecting spring, and the adjusting bolt and the connecting spring are located on both sides of the adjusting plate.

[0010] By adopting the above technical solution, the adjusting bolt is rotated to squeeze the adjusting plate at one end of the adjusting bolt, thereby adjusting the distance between the adjusting plate and the connecting plate.

[0011] As a further solution of the utility model: both ends of the connecting plate are connected with L-shaped plates, and the adjusting plate is located between the L-shaped plate and the connecting plate.

[0012] By adopting the above technical solution, the L-shaped plate cooperates with the connecting plate to limit the movement range of the adjusting plate.

[0013] As a further solution of the utility model: a second limiting rod is integrally connected to the side of the adjustment plate away from the driving cylinder, and one end of the second limiting rod is connected to the upper template.

[0014] By adopting the above technical solution, the driving cylinder drives the connecting plate to move and then drives the adjusting plate to move. The movement of the adjusting plate drives the movement of the second limiting rod and then drives the movement of the upper template.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. When sealing and packaging the box, the process of cutting the film first and then sealing is adopted, which reduces the generation of waste edges, is beneficial to improving the product quality of the packaging box, and is convenient for transportation and storage. A vacuum chamber is added in the above process. When the pressing mold frame and the lower mold frame are in a conflicting state, vacuum replacement begins to be carried out under vacuum, and then the film cutting and sealing operations are completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of an embodiment;

[0018] Figure 2 This is a schematic diagram of the structure of the embodiment after removing the vacuum chamber;

[0019] Figure 3 for Figure 2 A structural diagram from another perspective;

[0020] Figure 4 It is a top view of the embodiment when not working;

[0021] Figure 5 for Figure 4 Sectional view in the AA direction;

[0022] Figure 6 It is a schematic diagram of the structure of the embodiment when it is working.

[0023] In the figure: 1. upper die base assembly; 10. upper die plate; 11. film pressing frame; 110. opening; 111. spring column one; 12. sealing and cutting device one; 13. sealing and cutting device two; 130. heat sealing plate; 131. annular cutter; 132. spring column two; 133. spring column three; 134. annular convex edge; 135. lug; 136. limit pin; 137. threaded hole; 138. column; 139. spring; 2. lower die base assembly; 20. lower film frame; 21. placement groove; 22. annular step; 4. driving cylinder; 41. workbench; 42. connecting plate; 43. vacuum chamber; 44. first limit rod; 45. adjusting bolt; 46. adjusting plate; 47. L-shaped plate; 48. second limit rod; 49. connecting spring. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In the embodiment of the utility model,

[0026] A packaging sealing mechanism without waste edge for a modified atmosphere packaging machine, such as Figure 1-Figure 6As shown, it includes a workbench 41, the workbench 41 is installed with a driving cylinder 4, the driving cylinder 4 is connected with a connecting plate 42, the connecting plate 42 is connected with a vacuum chamber 43 through a connecting spring 49, an upper die base assembly 1 is installed in the vacuum chamber 43, a lower die base assembly 2 is arranged below the vacuum chamber 43, the lower die base assembly 2 includes a lower film frame 20 with two placement grooves 21, and an annular step 22 is arranged at the notch of the placement groove 21, the upper die base assembly 1 includes an upper mold plate 10 and a film pressing frame 11, the film pressing frame 11 is provided with two openings 110, the edge of the film pressing frame 11 is connected to the upper mold plate 10 through a spring 139 column 111, and a spring 139 column 111 is arranged between the film pressing frame 11 and the upper mold plate 10 The sealing and cutting device 12 and the sealing and cutting device 2 13, both of which include a heat sealing plate 130 and an annular cutter 131, wherein the annular cutter 131 is arranged around the outer periphery of the heat sealing plate 130, and the annular cutter 131 is movably connected to the upper template through a spring 139 column 2 132, and the heat sealing plate 130 is movably connected to the upper template 10 through a spring 139 column 3 133, and an annular convex edge 134 is provided at the upper end of the two annular cutters 131, and the annular convex edge 134 connects the two annular cutters 131 into one body, and six lugs 135 are provided along the circumference of the annular convex edge 134, and a limiting pin 136 is provided on the lug 135, and the limiting pin 136 is located above the film pressing frame 11.

[0027] The lug 135 is provided with a threaded hole 137 , and the limiting pin 136 is fixed in the threaded hole 137 by threaded engagement.

[0028] The spring 139 column 1 111 , the spring 139 column 2 132 , and the spring 139 column 3 133 all include a column 138 and a spring 139 sleeved outside the column 138 .

[0029] Both ends of the connecting plate 42 are integrally connected with a first limiting rod 44 , and the first limiting rod 44 passes through the workbench 41 .

[0030] The connecting plate 42 is penetrated by an adjusting bolt 45 threadedly connected to the connecting plate 42 . An adjusting plate 46 is arranged between the connecting plate 42 and the connecting spring 49 . The adjusting bolt 45 and the connecting spring 49 are located on both sides of the adjusting plate 46 .

[0031] Both ends of the connecting plate 42 are connected to L-shaped plates 47 , and the adjusting plate 46 is located between the L-shaped plate 47 and the connecting plate 42 .

[0032] A second limiting rod 48 is integrally connected to a side of the adjustment plate 46 facing away from the driving cylinder 4 , and one end of the second limiting rod 48 is connected to the upper mold plate 10 .

[0033] Working principle:

[0034] The box to be packaged is placed in the placement groove 21 of the lower die base assembly 2, and the edge of the opening 110 is located on the annular step 22. The packaging film is placed between the upper die base assembly 1 and the lower die base assembly 2, and the driving cylinder 4 drives the connecting plate 42 to move downward, and then drives the adjusting plate 46 to move downward, and the adjusting plate 46 moves downward to drive the second limiting rod 48 to move downward, and then drives the vacuum chamber 43 to move downward. As the vacuum chamber 43 moves downward until the film pressing frame 11 and the lower film frame 20 are in a state of conflict, the first limiting rod plays a guiding role in the above process.

[0035] Then the vacuum replacement begins. After the vacuum replacement is completed, the driving cylinder 4 continues to move downward with the second limiting rod 48, thereby driving the upper template 10 downward. Then the annular cutter 131 is controlled by the upper template 10 and moves toward the lower mold assembly to cut the packaging film in an annular shape. The packaging film after cutting is slightly smaller than the opening 110 of the box, which can avoid the generation of waste edges. When the limiting pin 136 on the annular cutter 131 conflicts with the lower mold frame, the annular cutter 131 will stop moving. The limiting pin 136 plays a role in limiting the movement range of the annular cutter 131, so that the working quality of the annular cutter 131 when cutting the film is better. At the same time, the limiting pin 136 and the lug 135 are detachable structures. After the limiting pin 136 is worn, it can be replaced in time, which is conducive to extending the working life of the equipment. Then the heat sealing plate 130 moves toward the lower mold base assembly 2 to seal the packaging film at the box opening 110. Such a working procedure adopts a mode in which the circular cutter 131 cuts the film first and then seals it with the heat sealing plate 130, so that there is no waste edge of the packaging film extending out of the box, which is beneficial to improving the neatness of the box and the working quality of the overall equipment.

[0036] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A packaging and sealing mechanism without waste edges for a modified atmosphere packaging machine, comprising a workbench (41), characterized in that: The workbench (41) is provided with a driving cylinder (4), the driving cylinder (4) is connected with a connecting plate (42), the connecting plate (42) is connected with a vacuum chamber (43) via a connecting spring (49), an upper die seat assembly (1) is installed in the vacuum chamber (43), a lower die seat assembly (2) is arranged below the vacuum chamber (43), the lower die seat assembly (2) comprises a lower film frame (20) having two placement grooves (21), an annular step (22) is arranged at the notch of the placement groove (21), the upper die seat assembly (1) comprises an upper mold plate (10) and a film pressing frame (11), the film pressing frame (11) is provided with two openings (110), the edge of the film pressing frame (11) is connected to the upper mold plate (10) via a spring column (111), a sealing and cutting device is arranged between the film pressing frame (11) and the upper mold plate (10). The invention relates to a sealing and cutting device (12) and a sealing and cutting device (13), wherein the sealing and cutting device (12) and the sealing and cutting device (13) both comprise a heat sealing plate (130) and an annular cutter (131), wherein the annular cutter (131) is arranged around the outer periphery of the heat sealing plate (130), wherein the annular cutter (131) is movably connected to the upper template (10) via a second spring column (132), wherein the heat sealing plate (130) is movably connected to the upper template (10) via a third spring column (133), wherein an annular convex edge (134) is arranged at the upper end of the two annular cutters (131), wherein the annular convex edge (134) connects the two annular cutters (131) into one body, and wherein six lugs (135) are arranged along the circumference of the annular convex edge (134), wherein the lugs (135) are provided with limit pins (136), and wherein the limit pins (136) are located above the film pressing frame (11).

2. The sealing mechanism for packaging without waste edges of a modified atmosphere packaging machine according to claim 1, characterized in that: The lug (135) is provided with a threaded hole (137), and the limiting pin (136) is fixed in the threaded hole (137) by threaded engagement.

3. The waste-free packaging and sealing mechanism of a modified atmosphere packaging machine according to claim 1, characterized in that: The spring column 1 (111), the spring column 2 (132), and the spring column 3 (133) all include a column body (138) and a spring (139) sleeved outside the column body (138).

4. The non-waste edge packaging sealing mechanism of a modified atmosphere packaging machine according to claim 1, characterized in that: Both ends of the connecting plate (42) are integrally connected with a first limiting rod (44), and the first limiting rod (44) passes through the workbench (41).

5. The non-waste edge packaging sealing mechanism of a modified atmosphere packaging machine according to claim 1, characterized in that: The connecting plate (42) is provided with an adjusting bolt (45) threadedly connected to the connecting plate (42), an adjusting plate (46) is arranged between the connecting plate (42) and the connecting spring (49), and the adjusting bolt (45) and the connecting spring (49) are located on both sides of the adjusting plate (46).

6. The sealing mechanism for packaging without waste edges of a modified atmosphere packaging machine according to claim 5, characterized in that: Both ends of the connecting plate (42) are connected to an L-shaped plate (47), and the adjusting plate (46) is located between the L-shaped plate (47) and the connecting plate (42).

7. The sealing mechanism for packaging without waste edges of a modified atmosphere packaging machine according to claim 5, characterized in that: A second limiting rod (48) is integrally connected to the side of the adjustment plate (46) facing away from the driving cylinder (4), and one end of the second limiting rod (48) is connected to the upper template (10).

Images