Vacuum packaging machine

Abstract

The utility model relates to the technical field of packaging machines, in particular to a vacuum packaging machine. The problem that in the prior art, when a packaging machine sprays glue, envelopes are prone to being separated from a conveying belt is solved, and the practicability of equipment is improved. The device structurally comprises a fixing frame, a conveying belt is arranged on the fixing frame, a plurality of ventilation areas are arranged on the conveying belt in the conveying direction, a plurality of ventilation holes are formed in the ventilation areas, an extending plate is arranged in the conveying belt and fixedly connected with the fixing frame, a connecting structure used for forming a cavity with the conveying belt is arranged on the extending plate, and an exhaust fan is connected into the connecting structure. The ventilation area moves in the conveying direction of the conveying belt and passes through the position over the connecting structure, and a glue spraying assembly is further arranged on the fixing frame. When the envelope passes through the connecting structure on the conveying belt, the exhaust fan exhausts air to enable the envelope to be temporarily attached to the conveying belt, at the moment, when glue is sprayed on the envelope, the envelope is not prone to being blown away from the conveying belt, and the envelope glue spraying device has high practicability.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of packaging machine, specifically, relates to a vacuum packaging machine. BACKGROUND

[0002] The packaging machine is a kind of machine equipment for packaging envelope on automatic production line.It usually includes glue spraying, folding, bonding, filling and sealing of envelope, to help realize high-efficiency mass production.

[0003] The working process of the existing packaging machine for envelope glue spraying is as follows: first, place the envelope on the conveyor belt, then convey the envelope to the position close to the glue spraying position by the conveyor belt for glue spraying, and then convey away by the conveyor belt to complete the glue spraying process.

[0004] Although this can realize the glue spraying operation of envelope, there are still the following disadvantages: when the envelope is glued, the glue sprayed by the glue spraying assembly will generate certain air pressure and hydraulic pressure on the envelope, and the conveyor belt lacks fixing structure for the envelope, so that the envelope is pushed away from the glue spraying position of the glue spraying assembly under the action of pressure, which not only may cause part of the envelope not to be sprayed by glue, but also causes waste of glue when the glue spraying assembly sprays the envelope at the position of separation. INVENTION CONTENTS

[0005] The utility model provides a kind of vacuum packaging machine, solve the problem that envelope is easy to separate from conveyor belt when glue spraying of packaging machine in prior art, improve the practicability of equipment.

[0006] The technical scheme of the utility model is as follows:

[0007] A kind of vacuum packaging machine, including fixing frame,

[0008] The fixing frame is provided with a conveyor belt, the conveyor belt is provided with a plurality of ventilation zones along the conveying direction, a plurality of ventilation holes are arranged in the ventilation zone, a protruding plate is arranged in the conveyor belt, the protruding plate is fixedly connected with the fixing frame, a connecting structure for forming a cavity with the conveyor belt is arranged on the protruding plate, a suction fan is connected in the connecting structure, the ventilation zone moves through the upper part of the connecting structure along the conveying direction of the conveyor belt, the fixing frame is further provided with a glue spraying assembly, the first adjusting structure for adjusting the movement of the glue spraying assembly along the X-axis direction of the fixing frame is arranged between the glue spraying assembly and the fixing frame, the second adjusting structure for adjusting the movement of the glue spraying assembly along the Y-axis direction of the fixing frame is further arranged on the first adjusting structure.

[0009] Further, the connecting structure comprises first and second connecting plates parallel to each other, the first and second connecting plates are parallel to the conveying direction of the conveying belt, third and fourth connecting plates are fixed between the first and second connecting plates, the third and fourth connecting plates are parallel to each other, the first, second, third and fourth connecting plates are fixedly connected with the extension plate, the first, second, third and fourth connecting plates are slidably connected with the conveying belt, and the first, second, third, fourth connecting plates, the conveying belt and the extension plate form a vacuum cavity.

[0010] Further, the conveying belt is provided with a first sliding groove near the side of the first connecting plate, a second sliding groove is provided near the side of the second connecting plate, a first sliding block slidably connected with the first sliding groove is fixed on the first connecting plate, a second sliding block slidably connected with the second sliding groove is fixed on the second connecting plate, the cross sections of the first and second sliding blocks are square structures, and rubber strips are fixed on the conveying belt ends of the third and fourth connecting plates and abut against the conveying belt.

[0011] Further, the fixing frame comprises first and second support plates parallel to each other, support feet are fixed to the lower ends of the first and second support plates, the conveying belt is arranged between the first and second support plates, and the extension plate is fixedly connected with the first and second support plates at both ends.

[0012] Further, the first adjusting structure comprises first and second sliding rods, first and second connecting rods are fixed between the two ends of the first and second sliding rods, a plurality of first support rods are fixed between the first support plate and the first sliding rod, a plurality of second support rods are fixed between the second support plate and the second sliding rod, a third sliding block is slidably connected to the first sliding rod, a fourth sliding block is slidably connected to the second sliding rod, and locking bolts are arranged on the third and fourth sliding blocks.

[0013] Further, the second adjusting structure comprises a fifth sliding block, a first screw rod and a second screw rod are rotatably connected between the third and fourth sliding blocks, the first and second screw rods are parallel to each other and located in the same horizontal plane, and the fifth sliding block is threadedly connected with the first and second screw rods.

[0014] Further, a driving motor is fixed to the first sliding block, the output shaft of the driving motor is fixedly connected with the first screw rod, and a synchronous belt is arranged between the first and second screw rods.

[0015] The working principle and beneficial effects of the utility model are as follows:

[0016] The working process of the embodiment is as follows: first, the envelope to be sprayed with glue is placed in the ventilation area of the conveying belt, then the conveying belt with the envelope enters the vacuum cavity, the fan connected in the vacuum cavity removes the air in the vacuum cavity, so that the air pressure in the vacuum cavity is less than the air pressure outside, under the action of the air pressure difference, the envelope is tightly attached to the ventilation hole on the ventilation area, at this time, the envelope is sprayed with glue, then the envelope is transported away from the vacuum cavity by the conveying belt, at this time, the air pressure at the bottom of the envelope is balanced with the air pressure at the top of the envelope, and the envelope is easy to be taken out.

[0017] The utility model discloses a ventilation area is set up on the conveying belt, and a connecting structure is arranged at the bottom of the conveying belt, and a suction fan is connected in the connecting structure, so that when the envelope passes through the connecting structure on the conveying belt, the suction fan removes the air and makes the envelope temporarily tightly attached to the conveying belt, at this time, the envelope is not easy to be blown away from the conveying belt when the envelope is sprayed with glue, and the utility model has strong practicability. BRIEF DESCRIPTION OF DRAWINGS

[0018] The utility model will be further explained in detail in combination with the drawings and specific embodiment.

[0019] Figure 1 It is the structure schematic diagram of prior art for this embodiment;

[0020] Figure 2 It is the whole structure schematic diagram of this embodiment Figure 1 ;

[0021] Figure 3 It is the whole structure schematic diagram of this embodiment Figure 2 ;

[0022] Figure 4 It is the connecting structure schematic diagram of first screw rod and second screw rod in this embodiment;

[0023] Figure 5 It is the structure schematic diagram in connecting structure inside in this embodiment Figure 1 ;

[0024] Figure 6 It is the structure schematic diagram in connecting structure inside in this embodiment Figure 2 .

[0025] In the drawing:

[0026] 1. Fixed frame; 11. First support plate; 111. Extended plate; 12. Second support plate; 13. Support foot; 2. Exhaust fan; 3. Conveyor belt; 31. Ventilation zone; 311. Ventilation hole; 32. First sliding groove; 33. Second sliding groove; 41. First sliding rod; 411. First support rod; 412. Second support rod; 42. Second sliding rod; 43. First connecting rod; 44. Second connecting rod; 51. Third slider; 511. Locking bolt; 52. Fourth slider; 61. First lead screw; 62. Second lead screw; 611. Synchronous belt; 612. Drive motor; 7. Fifth slider; 71. Glue spraying assembly; 81. First connecting plate; 811. First slider; 812. Second slider; 82. Second connecting plate; 83. Third connecting plate; 831. Rubber strip; 84. Fourth connecting plate; 9. Vacuum chamber. Detailed Implementation

[0027] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0028] like Figures 2 to 6 As shown, a vacuum sealing machine includes a fixed frame 1. In this embodiment, a conveyor belt 3 is mounted on the fixed frame 1. Several ventilation zones 31 are arranged along the conveyor belt 3's conveying direction. Ventilation zones 31 parallel to the conveyor belt 3's conveying direction are used to increase the absorption time of envelopes on the conveyor belt 3, while ventilation zones 31 perpendicular to the conveyor belt 3's conveying direction are used to increase the number of workstations. An adhesive spraying assembly 71 is added to improve production efficiency. Several ventilation holes 311 are arranged within the ventilation zones 31. An extension plate 111 is arranged within the conveyor belt 3 and is fixedly connected to the fixed frame 1. A connecting structure is arranged on the extension plate 111 to form a chamber with the conveyor belt 3. An exhaust fan 2 is connected to the connecting structure. The ventilation zones 31 move along the conveyor belt 3's conveying direction, passing directly above the connecting structure. The adhesive spraying assembly 71 is mounted on the fixed frame 1. A first adjustment structure is arranged between the adhesive spraying assembly 71 and the fixed frame 1 to adjust the movement of the adhesive spraying assembly 71 along the X-axis of the fixed frame 1. A second adjustment structure is arranged on the first adjustment structure to adjust the movement of the adhesive spraying assembly 71 along the Y-axis of the fixed frame 1.

[0029] The fixed frame 1 in the embodiment comprises a first support plate 11 and a second support plate 12 which are parallel to each other, and is used for facilitating the installation of the conveying belt 3 between the first support plate 11 and the second support plate 12. The support feet 13 are fixedly arranged at the lower ends of the first support plate 11 and the second support plate 12, and are used for raising the height of the workbench to facilitate the work of workers. The conveying belt 3 is arranged between the first support plate 11 and the second support plate 12, and the extension plates 111 at both ends thereof are fixedly connected with the first support plate 11 and the second support plate 12 respectively, so as to make the extension plates 111 more closely connected with the fixed frame 1.

[0030] The first adjusting structure in the embodiment comprises a first sliding rod 41 and a second sliding rod 42, and a first connecting rod 43 and a second connecting rod 44 are fixedly arranged between the two ends of the first sliding rod 41 and the two ends of the second sliding rod 42. A plurality of first support rods 411 are fixedly arranged between the first support plate 11 and the first sliding rod 41, and are used for raising the height of the glue spraying assembly 71, so that the glue spraying assembly 71 can perform glue spraying operation on the envelope from top to bottom. A plurality of second support rods 412 are fixedly arranged between the second support plate 12 and the second sliding rod 42. A third sliding block 51 is slidingly connected with the first sliding rod 41, and a fourth sliding block 52 is slidingly connected with the second sliding rod 42. The third sliding block 51 and the fourth sliding block 52 are both provided with locking bolts 511, which are used for ensuring that the adjusting structure does not change. Such design can adjust the position of the glue spraying assembly 71 in the X-axis direction, and the adjustment can be made according to the size of the specific envelope and actual needs, so that the device is more flexible and suitable for more working environments.

[0031] The second adjusting structure in the embodiment comprises a fifth sliding block 7. A first lead screw 61 and a second lead screw 62 are arranged between the third sliding block 51 and the fourth sliding block 52, and are rotatably connected with the third sliding block 51 and the fourth sliding block 52. The first lead screw 61 and the second lead screw 62 are parallel to each other and are in the same horizontal plane. The fifth sliding block 7 is threadedly connected with the first lead screw 61 and the second lead screw 62. The design of the first lead screw 61 and the second lead screw 62 makes the adjusting precision higher. Such design is used for adjusting the position of the glue spraying assembly 71 in the Y-axis direction, and the adjustment can be made according to the size of the specific envelope and actual needs, so that the device is more flexible and suitable for more working environments.

[0032] The driving motor 612 in the embodiment is fixedly arranged on the first sliding block 811. The output shaft of the driving motor 612 is fixedly connected with the first lead screw 61. A synchronous belt 611 is arranged between the first lead screw 61 and the second lead screw 62. The driving motor 612 in the embodiment is a two-phase motor. The adjustment of the position of the glue spraying assembly 71 in the Y-axis direction is realized by the forward rotation and reverse rotation of the driving motor 612.

[0033] The connecting structure in the embodiment comprises a first connecting plate 81 and a second connecting plate 82 which are parallel to each other and parallel to the conveying direction of the conveying belt 3, a third connecting plate 83 and a fourth connecting plate 84 which are fixedly arranged between the first connecting plate 81 and the second connecting plate 82 and parallel to each other, the first connecting plate 81, the second connecting plate 82, the third connecting plate 83 and the fourth connecting plate 84 are fixedly connected with the extending plate 111, the first connecting plate 81, the second connecting plate 82, the third connecting plate 83 and the fourth connecting plate 84 are slidably connected with the conveying belt 3, and the first connecting plate 81, the second connecting plate 82, the third connecting plate 83, the fourth connecting plate 84, the conveying belt 3 and the extending plate 111 form a vacuum cavity 9. The air extractor 2 in the embodiment is preferably in communication with the position of the extending plate 111 in the vacuum cavity 9, and air is extracted downward from the bottom, so that the envelope passing through the top is more closely adsorbed with the conveying belt 3 and is not easy to fall off or deviate.

[0034] The first sliding groove 32 in the embodiment is arranged on the side of the conveying belt 3 close to the first connecting plate 81, and the second sliding groove 33 is arranged on the side of the conveying belt 3 close to the second connecting plate 82. The first sliding block 811 is fixedly arranged on the first connecting plate 81 and slidably connected with the first sliding groove 32. The second sliding block 812 is fixedly arranged on the second connecting plate 82 and slidably connected with the second sliding groove 33. The cross sections of the first sliding block 811 and the second sliding block 812 are both square structures, and the rubber strip 831 is fixedly arranged on the side of the third connecting plate 83 and the fourth connecting plate 84 close to the conveying belt 3 and abuts against the conveying belt 3. Such a design can minimize the area of the vacuum cavity 9 in contact with the outside, so that when the air pressure in the vacuum cavity 9 is reduced by the air extractor 2, the adsorption force of the conveying belt 3 on the envelope is enhanced.

[0035] The working process of the embodiment is as follows: first, the envelope to be sprayed with glue is placed in the ventilation area 31 of the conveying belt 3, then the conveying belt 3 carries the envelope through the vacuum cavity 9, the fan connected in the vacuum cavity 9 extracts the air in the vacuum cavity 9, so that the air pressure in the vacuum cavity 9 is less than the air pressure outside, under the action of the air pressure, the envelope closely adheres to the ventilation hole 311 on the ventilation area 31, at this time, the envelope is sprayed with glue, then the envelope is carried away from the vacuum cavity 9 by the conveying belt 3, at this time, the air pressure at the bottom of the envelope is balanced with the air pressure at the top of the envelope, and the envelope is easy to be taken out.

[0036] The above is only a preferred embodiment of the utility model, and is not used to limit the utility model, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A vacuum packaging machine comprising a fixing frame (1), characterized in that, the fixing frame (1) is provided with a conveying belt (3), the conveying belt (3) is provided with a plurality of ventilation areas (31) along the conveying direction, the ventilation areas (31) are provided with a plurality of ventilation holes (311), the conveying belt (3) is provided with an extension plate (111), the extension plate (111) is fixedly connected with the fixing frame (1), the extension plate (111) is provided with a connecting structure for forming a cavity with the conveying belt (3), the connecting structure is connected with an air extractor (2), the ventilation areas (31) move through the connecting structure directly above along the conveying direction of the conveying belt (3), the fixing frame (1) is further provided with a glue spraying assembly (71), the glue spraying assembly (71) and the fixing frame (1) are provided with a first adjusting structure for adjusting the movement of the glue spraying assembly (71) along the X-axis direction of the fixing frame (1), the first adjusting structure is further provided with a second adjusting structure for adjusting the movement of the glue spraying assembly (71) along the Y-axis direction of the fixing frame (1).

2. A vacuum packaging machine according to claim 1, characterized in that The connecting structure comprises first and second connecting plates (81, 82) parallel to each other, the first and second connecting plates (81, 82) are parallel to the conveying direction of the conveying belt (3), the first and second connecting plates (81, 82) are fixedly connected with third and fourth connecting plates (83, 84), the third and fourth connecting plates (83, 84) are parallel to each other, the first, second, third and fourth connecting plates (81, 82, 83, 84) are fixedly connected with the extension plate (111), the first, second, third and fourth connecting plates (81, 82, 83, 84) are slidingly connected with the conveying belt (3), the first, second, third, fourth connecting plates (81, 82, 83, 84), the conveying belt (3) and the extension plate (111) form a vacuum cavity (9).

3. A vacuum packaging machine according to claim 2, wherein The conveying belt (3) is provided with a first sliding groove (32) near the first connecting plate (81), the conveying belt (3) is provided with a second sliding groove (33) near the second connecting plate (82), the first connecting plate (81) is fixedly connected with a first sliding block (811) slidingly connected with the first sliding groove (32), the second connecting plate (82) is fixedly connected with a second sliding block (812) slidingly connected with the second sliding groove (33), the cross sections of the first and second sliding blocks (811, 812) are square structures, the third and fourth connecting plates (83, 84) are fixedly connected with rubber strips (831) near the conveying belt (3), the rubber strips (831) abut against the conveying belt (3).

4. A vacuum packaging machine according to claim 1, characterized in that The fixed frame (1) comprises first and second support plates (11, 12) parallel to each other, support legs (13) are fixed to the lower ends of the first and second support plates (11, 12), the conveying belt (3) is arranged between the first and second support plates (11, 12), and the extension plates (111) are fixedly connected to the first and second support plates (11, 12) at both ends, respectively.

5. A vacuum packaging machine according to claim 4, characterized in that The first adjusting structure comprises first and second sliding rods (41, 42), first and second connecting rods (43, 44) are fixed between the two ends of the first and second sliding rods (41, 42), a plurality of first support rods (411) are fixed between the first support plate (11) and the first sliding rod (41), a plurality of second support rods (412) are fixed between the second support plate (12) and the second sliding rod (42), a third sliding block (51) is slidably connected to the first sliding rod (41), a fourth sliding block (52) is slidably connected to the second sliding rod (42), and locking bolts (511) are arranged on the third and fourth sliding blocks (51, 52).

6. A vacuum packaging machine according to claim 5, characterized in that The second adjusting structure comprises a fifth sliding block (7), first and second lead screws (61, 62) are rotatably connected between the third and fourth sliding blocks (51, 52), the first and second lead screws (61, 62) are parallel to each other and located on the same horizontal plane, and the fifth sliding block (7) is threadedly connected to the first and second lead screws (61, 62).

7. A vacuum packaging machine according to claim 6, characterized in that The first sliding block (811) is further fixed with a driving motor (612), an output shaft of the driving motor (612) is fixedly connected to the first lead screw (61), and a synchronous belt (611) is arranged between the first and second lead screws (61, 62).

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