A conversion device for the packaging station of a vacuum packaging machine

Abstract

The present invention relates to a conversion device for a packaging station of a vacuum packaging machine, which comprises a machine body. A packaging groove is formed in the machine body. An elevating positioning mechanism, a planar supporting mechanism and a height detection mechanism are arranged inside the packaging groove. The elevating positioning mechanism is used to drive the planar supporting mechanism to move up and down. The planar supporting mechanism forms a telescopic supporting plane for supporting materials. The height detection mechanism is used to detect the presence of the materials and the structural members of the planar supporting mechanism, and send out signals to control the start and stop of the elevating positioning mechanism. The present invention enables users to freely adjust the height of the planar supporting mechanism for supporting materials according to their product requirements, so that one model can package multiple products with different liquid contents, realizing multi-purpose use of one machine, saving resources and improving the utilization rate of the equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of vacuum packaging machine equipment, and in particular to a conversion device for a packaging station of a vacuum packaging machine. Background Art

[0002] A vacuum packaging machine can automatically extract the air inside a packaging bag and complete the sealing process after reaching a predetermined vacuum degree. It can also be filled with nitrogen or other mixed gases and then complete the sealing process. Vacuum packaging machines are often used in the food industry because after vacuum packaging, food can be antioxidized, thus achieving the purpose of long-term preservation.

[0003] Currently, due to the diversity of customer materials, there are various specifications and styles of double-station vacuum packaging machines in the market. Since customers may have two or more types of materials, some containing liquid and some not, a single packaging machine cannot perfectly package materials with different liquid contents, so it is necessary to purchase multiple packaging machines, resulting in low equipment utilization rate and high labor costs. Summary of the Invention

[0004] The purpose of the present invention is to solve the drawbacks existing in the prior art, and to provide a conversion device for the packaging operation of a vacuum packaging machine.

[0005] In order to achieve the above purpose, the present invention is realized through the following technical solutions:

[0006] A conversion device for a packaging station of a vacuum packaging machine, including a machine body, characterized in that: a sunken packaging groove is provided on the machine body, the packaging groove is in the shape of an inverted truncated square with an open upper end, a lifting and positioning mechanism and a planar support mechanism are arranged inside the packaging groove, and a height detection mechanism is provided on the machine body;

[0007] The lifting and positioning mechanism includes a lead screw, a lead screw nut, a guide post and a sliding sleeve. The lead screw is vertically installed inside the packaging groove, and the lower end of the lead screw is rotatably connected to the bottom of the packaging groove. The lead screw nut is screwed on the lead screw. The guide post is vertically installed inside the packaging groove, and the lower end of the guide post is fixedly connected to the bottom of the packaging groove. The sliding sleeve is slidably arranged on the guide post. Both the lead screw and the guide post are arranged on the center line of the bottom surface of the packaging groove;

[0008] The planar support mechanism includes a support plate, a left movable positioning plate, and a right movable positioning plate. Both the wire sleeve and the sliding sleeve are fixed on the support plate. At the position corresponding to the sliding sleeve on the lower end face of the support plate, a mounting block is fixedly provided. A left guide rod is fixed on the left side of the mounting block. The left movable positioning plate is slidably mounted on the left guide rod. A first spring is sleeved on the left guide rod. The inner end of the first spring is fixed to the mounting block, and the outer end of the first spring is fixed to the left movable positioning plate. A right guide rod is fixed on the right side of the mounting block. The right movable positioning plate is slidably mounted on the right guide rod. A second spring is sleeved on the right guide rod. The inner end of the second spring is fixed to the mounting block, and the outer end of the second spring is fixed to the right movable positioning plate;

[0009] The height detection mechanism includes a photoelectric detection switch and a threading screw. The photoelectric detection switch is fixed on the machine body on the side of the packaging groove. The threading screw is fixed on the side of the photoelectric detection switch. The threading screw is used to lead the signal wire of the photoelectric detection switch.

[0010] Preferably, the outer end of the left movable positioning plate is folded inward to form a left bending plate, and the left bending plate is attached to the left inclined surface of the packaging groove; the outer end of the right movable positioning plate is folded inward to form a right bending plate, and the right bending plate is attached to the right inclined surface of the packaging groove.

[0011] Preferably, a left guide tube is fixedly provided on the bottom surface of the left movable positioning plate, and the left movable positioning plate is sleeved on the left guide rod through the left guide tube; a right guide tube is fixedly provided on the bottom surface of the right movable positioning plate, and the right movable positioning plate is sleeved on the right guide rod through the right guide tube.

[0012] Preferably, a lifting motor is provided below the packaging groove. The output shaft of the lifting motor is coaxially connected to the lead screw through a lead screw connection sleeve. A sealing gasket is provided between the lifting motor and the packaging groove.

[0013] Preferably, there are two left guide tubes, and the two left guide tubes are coaxial; there are two right guide tubes, and the two right guide tubes are coaxial.

[0014] The beneficial technical effects of the present invention:

[0015] 1. A conversion device for a packaging station of a vacuum packaging machine proposed by the present invention, by setting a lifting and positioning mechanism and a planar support mechanism, the lifting and positioning mechanism provides support and power for up and down movement for the planar support mechanism. The planar support mechanism includes a support plate, a left movable positioning plate, and a right movable positioning plate. By setting the left movable positioning plate and the right movable positioning plate, while the planar support mechanism moves up and down, it can adjust the size of the support plane through spring expansion and contraction, enabling the user to freely adjust the height of the planar support mechanism for supporting materials according to their own product needs, so that one model can package a variety of products with different liquid contents;

[0016] 2. The conversion device for the packaging station of the vacuum packaging machine proposed by the present invention, by setting the left bending plate and the right bending plate, when the planar support mechanism moves up and down, both sides can better fit the inclined surface of the packaging groove, with good sealing effect and preventing air leakage during vacuum pumping;

[0017] 3. The conversion device for the packaging station of the vacuum packaging machine proposed by the present invention, by setting the height detection mechanism, can detect the presence of the material and the planar support mechanism in real time. At the beginning of packaging, after the packaging material is placed on the planar support mechanism, the height detection mechanism detects the presence of the material. Then, after the planar support structure descends until the height detection mechanism can no longer detect the material, the planar support mechanism stops descending and starts packaging; when packaging is completed and the packaging material is taken away, the height detection mechanism cannot detect the material. At this time, the planar support mechanism rises until the height detection mechanism detects the structural member of the planar support structure, and then the planar support structure stops rising. The planar support mechanism can automatically adjust the height according to the change of the material specifications, with high automation and convenient for production use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the overall structural schematic diagram of the conversion device for the packaging station of the vacuum packaging machine proposed by the present invention;

[0019] Figure 2 is the internal structural schematic of the conversion device for the packaging station of the vacuum packaging machine proposed by the present invention Figure 1 ;

[0020] Figure 3 is the internal structural schematic of the conversion device for the packaging station of the vacuum packaging machine proposed by the present invention Figure 2 ;

[0021] Figure 4 is the structural schematic of the conversion device for the packaging station of the vacuum packaging machine proposed by the present invention Figure 1 ;

[0022] Figure 5 is the structural schematic of the conversion device for the packaging station of the vacuum packaging machine proposed by the present invention Figure 2 .

[0023] In the figure, 1, body; 2, packaging groove; 3, lead screw; 4, lead screw nut; 5, guide post; 6, sliding sleeve; 7, support plate; 8, left movable positioning plate; 9, right movable positioning plate; 10, first spring; 11, mounting block; 12, second spring; 13, photoelectric detection switch; 14, threading screw; 15, left bending plate; 16, right bending plate; 17, left guide tube; 18, right guide tube; 19, lifting motor; 20, sealing gasket; 21, left guide rod; 22, right guide rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The present invention will be further described in detail below with reference to the accompanying drawings.

[0025] Refer to Figures 1-5 , a conversion device for a packaging station of a vacuum packaging machine, comprising a machine body 1, on which a sunken packaging groove 2 is provided. The packaging groove 2 is in the shape of an inverted truncated square with an open upper end. An elevating positioning mechanism and a planar support mechanism are arranged inside the packaging groove 2. A height detection mechanism is arranged on the machine body. The elevating positioning mechanism provides support and power for the up and down movement of the planar support mechanism. A bottle, the planar support mechanism is used to place and support the material to be packaged, and the height detection mechanism is used to detect the presence of the material and the structural members of the planar support mechanism, and control the start and stop of the elevating positioning mechanism according to the detection results.

[0026] The elevating positioning mechanism includes a lead screw 3, a lead screw nut 4, a guide post 5 and a sliding sleeve 6. The lead screw 3 is vertically installed inside the packaging groove 2, and the lower end of the lead screw 3 is rotatably connected to the bottom of the packaging groove 2. The lead screw nut 4 is screwed on the lead screw 3. The guide post 5 is vertically installed inside the packaging groove 2, and the lower end of the guide post 5 is fixedly connected to the bottom of the packaging groove 2. The sliding sleeve 6 is slidably arranged on the guide post 5. Both the lead screw 3 and the guide post 5 are arranged on the center line of the bottom surface of the packaging groove 2.

[0027] The planar support mechanism includes a support plate 7, a left movable positioning plate 8 and a right movable positioning plate 9. Both the lead screw nut 4 and the sliding sleeve 6 are fixed on the support plate 7, so that the support plate 7 is indirectly installed on the lead screw 3 and the guide post 5. The support plate 7 is screwed to the lead screw 3, and the support plate 7 is slidably connected to the guide post 5. The rotation of the lead screw 3 drives the support plate 7 to move up and down.

[0028] On the lower end face of the support plate 7, an installation block 11 is fixedly provided at the position corresponding to the sliding sleeve 6. A left guide rod 21 is fixed to the left side of the installation block 11. The left movable positioning plate 8 is slidably installed on the left guide rod 21. A first spring 10 is sleeved on the left guide rod 21. The inner end of the first spring 10 is fixed to the installation block 11, and the outer end of the first spring 10 is fixed to the left movable positioning plate 8. A right guide rod 22 is fixed to the right side of the installation block 11. The right movable positioning plate 9 is slidably installed on the right guide rod 22. A second spring 12 is sleeved on the right guide rod 22. The inner end of the second spring 12 is fixed to the installation block 11, and the outer end of the second spring 12 is fixed to the right movable positioning plate 9. By arranging the left movable positioning plate 8 and the right movable positioning plate 9, they jointly form a telescopic support plane with the support plate 7, which is adapted to the shape of the packaging groove 2. When the support plate 7 moves upward, under the action of the first spring 10 and the second spring 12, the left movable positioning plate 8 extends leftward to press against the side wall of the packaging groove 2, and the right movable positioning plate 9 extends rightward to press against the side wall of the packaging groove 32, so that the plane for supporting the material is extended; when the support plate 7 moves downward, the left movable positioning plate 8 and the right movable plate 9 both move inward to compress the springs. At the same time, under the action of the first spring 10 and the second spring 12, the sides of the two movable positioning plates are both pressed against the side wall of the packaging groove 2, so that the plane for supporting the material is contracted.

[0029] The outer end of the left movable positioning plate 8 is folded inward to form a left bending plate 15, and the left bending plate 15 fits with the left inclined surface of the packaging groove 2; the outer end of the right movable positioning plate 9 is folded inward to form a right bending plate 16, and the right bending plate 16 fits with the right inclined surface of the packaging groove 2. By arranging the left bending plate 15 and the right bending plate 16, the sides of the two movable positioning plates can better fit with the inclined side surfaces of the packaging groove 2 for sealing, ensuring the sealing performance of the packaging space during vacuum pumping.

[0030] The height detection mechanism includes a photoelectric detection switch 13 and a threading screw 14. The photoelectric detection switch 13 is fixed on the machine body 1 on the side of the packaging groove 2, and the threading screw 14 is fixed on the side of the photoelectric detection switch 13. The threading screw 14 is used for guiding the signal line of the photoelectric detection switch 13.

[0031] In the present invention, left guide tubes 17 are fixedly provided on the bottom surface of the left movable positioning plate 8. There are two left guide tubes 17, and the two left guide tubes 17 are coaxial. The left movable positioning plate 8 is sleeved on the left guide rod 21 through the left guide tubes 17; right guide tubes 18 are fixedly provided on the bottom surface of the right movable positioning plate 9. There are two right guide tubes 18, and the two right guide tubes 18 are coaxial. The right movable positioning plate 9 is sleeved on the right guide rod 22 through the right guide tubes 18.

[0032] A lifting motor 19 is arranged below the packaging groove 2. The output shaft of the lifting motor 19 is coaxially connected with the lead screw 3 through a lead screw connecting sleeve. A gasket 20 is arranged between the lifting motor 19 and the packaging groove 2. The lifting motor provides power for the entire lifting and positioning mechanism. At the same time, the gasket 20 is further added to ensure the sealing performance.

[0033] Working principle: At the beginning of packaging, after the packaging material is placed on the planar support mechanism, the lifting and positioning mechanism drives the planar support mechanism to descend. At this time, the left movable positioning plate 8 compresses the first spring 10 and moves inward, and the right movable positioning plate 9 also compresses the second spring 12 and moves inward. After the photoelectric detection switch 13 cannot detect the material, the planar support mechanism stops descending. The support plate 7, the left movable positioning plate 8, and the right movable positioning plate 9 form a support plane, and packaging starts; when packaging is completed and the packaging material is taken away, the photoelectric detection switch 13 cannot detect the material. At this time, the planar support mechanism ascends until the photoelectric detection switch 13 detects the structural member of the planar support structure, and then the planar support structure stops ascending. When continuously packaging items of one specification, the height detection mechanism can be manually turned off to keep the planar support mechanism at this height for convenient packaging; when changing to another packaging specification, the photoelectric detection switch 13 enables the planar support mechanism to automatically adjust the height according to the change in the specification of the material to adapt to various packaging specifications. The planar support mechanism can automatically adjust the height according to the change in the specification of the material, with a high degree of automation and convenient for production use.

[0034] The embodiments of this specific implementation manner are all preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A conversion device for a packaging station of a vacuum packaging machine, including a machine body (1), characterized in that: a sunken packaging groove (2) is arranged on the machine body (1), the packaging groove (2) is in the shape of an inverted truncated square pyramid with an open upper end, a lifting and positioning mechanism and a planar support mechanism are arranged inside the packaging groove (2), and a height detection mechanism is arranged on the machine body (1); the lifting and positioning mechanism includes a lead screw (3), a lead screw nut (4), a guide post (5) and a sliding sleeve (6), the lead screw (3) is vertically installed inside the packaging groove (2), and the lower end of the lead screw (3) is rotatably connected to the bottom of the packaging groove (2), the lead screw nut (4) is screwed on the lead screw (3), the guide post (5) is vertically installed inside the packaging groove (2), and the lower end of the guide post (5) is fixedly connected to the bottom of the packaging groove (2), the sliding sleeve (6) is slidably arranged on the guide post (5), and both the lead screw (3) and the guide post (5) are arranged on the center line of the bottom surface of the packaging groove (2); the planar support mechanism includes a support plate (7), a left movable positioning plate (8) and a right movable positioning plate (9), both the lead screw nut (4) and the sliding sleeve (6) are fixed on the support plate (7), an installation block (11) is fixedly arranged on the lower end surface of the support plate (7) corresponding to the position of the sliding sleeve (6), a left guide rod (21) is fixed on the left side of the installation block (11), the left movable positioning plate (8) is slidably installed on the left guide rod (21), a first spring (10) is sleeved on the left guide rod (21), the inner end of the first spring (10) is fixed to the installation block (11), and the outer end of the first spring (10) is fixed to the left movable positioning plate (8), a right guide rod (22) is fixed on the right side of the installation block (11), the right movable positioning plate (9) is slidably installed on the right guide rod (22), a second spring (12) is sleeved on the right guide rod (22), the inner end of the second spring (12) is fixed to the installation block (11), and the outer end of the second spring (12) is fixed to the right movable positioning plate (9); the height detection mechanism includes a photoelectric detection switch (13) and a threading screw (14), the photoelectric detection switch (13) is fixed on the machine body (1) on the side of the packaging groove (2), and the threading screw (14) is fixed on the side of the photoelectric detection switch (13), and the threading screw (14) is used for guiding and leading the signal wire of the photoelectric detection switch (13); the outer end of the left movable positioning plate (8) is folded inwards to form a left bending plate (15), and the left bending plate (15) fits with the left inclined surface of the packaging groove (2); the outer end of the right movable positioning plate (9) is folded inwards to form a right bending plate (16), and the right bending plate (16) fits with the right inclined surface of the packaging groove (2); a lifting motor (19) is arranged below the packaging groove (2), and the output shaft of the lifting motor (19) is coaxially connected to the lead screw (3) through a lead screw connecting sleeve, and a sealing gasket (20) is arranged between the lifting motor (19) and the packaging groove (2).

2. The conversion device for a packaging station of a vacuum packaging machine according to claim 1, characterized in that: On the bottom surface of the left movable positioning plate (8), a left guide tube (17) is fixedly installed, and the left movable positioning plate (8) is sleeved on the left guide rod (21) through the left guide tube (17); on the bottom surface of the right movable positioning plate (9), a right guide tube (18) is fixedly installed, and the right movable positioning plate (9) is sleeved on the right guide rod (22) through the right guide tube (18).

3. The conversion device for the packaging station of a vacuum packaging machine according to claim 2, characterized in that: Two left guide tubes (17) are provided, and the two left guide tubes (17) are coaxial; two right guide tubes (18) are provided, and the two right guide tubes (18) are coaxial.

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