Full-automatic food vacuum packaging machine

Abstract

The invention relates to the technical field of food packaging, in particular to a full-automatic food vacuum packaging machine which comprises a rack, a vacuum pump, a vacuum box, a rocker, a vacuum cover, an air cylinder and a heat sealing strip, a first clamping plate and a second clamping plate are arranged in the vacuum box and combined to be in a V shape, a fixing assembly is arranged on the first clamping plate and the second clamping plate, and a fixing frame is arranged on the fixing assembly; a discharging assembly is arranged on the vacuum cover, a discharging plate is arranged on the discharging assembly, the fixing assembly fixes the side edges of materials through swinging of a fixing frame, the discharging assembly drives the discharging plate to turn over through negative pressure generated when equipment is vacuumized, and the fixing frame is made to break away from fixing of the materials. The first clamping plate and the second clamping plate limit the distance between the materials and the multiple heat sealing strips 305, the problem that the vacuum degree of the vacuum packaging machine is reduced due to the fact that gaps are reserved in the vacuum box is solved, the vacuum degree of the full-automatic food vacuum packaging machine during vacuumizing is guaranteed, and meanwhile the use cost of the equipment is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of food packaging, in particular to a full-automatic food vacuum packaging machine. Background Art

[0002] Vacuum packaging, also known as reduced-pressure packaging, is the process of extracting all the air from the packaging container and sealing it, maintaining the bag in a highly reduced-pressure state. The scarce air is equivalent to the low-oxygen effect, which deprives microorganisms of survival conditions, so that food remains fresh and free from disease and decay. During the use of traditional vacuum packaging machines, it is necessary to manually place the packaging bag on the packaging machine, then place the open end on the placement seat, and manually turn the pressure rod to fix the packaging bag. Manual rotation of the pressure rod has problems such as high work intensity and low packaging efficiency.

[0003] In view of the above problems, the prior art has proposed some solutions. For example, Chinese patent application No.: CN202410182907.8 discloses a vacuum packaging machine; the above solution is to set a vacuum sealing cover in the packaging machine body, and at least two support plates are arranged on both sides of the vacuum sealing cover, and the two ends of the support plates are rotatably connected to the vacuum sealing cover and the packaging machine body respectively; two groups of limiting fixing components, the two groups of limiting fixing components are distributed at the two ends of the top of the packaging machine body, and the limiting fixing components include a first fixing frame and a rotating clamping assembly on both sides of the top of the packaging machine body; the rotating clamping assembly is arranged on the outside of the first fixing frame; and a power component, which is arranged on the packaging On the main body of the machine, the power component is arranged between the support plate and the rotating pressing assembly, and is used to drive the rotating pressing assembly and the vacuum sealing cover to rotate; it realizes automatic fixing of the packaging bag, avoiding the problems of manual pressing in the prior art, which is cumbersome to operate, has high operation intensity and low packaging efficiency; most of the existing production lines only package the same product, and during the operation of the above-mentioned vacuum packaging machine, it is necessary to open a hole in the vacuum box and connect an external drive to complete the material fixing work. When the vacuum box after the hole is opened is evacuated by the equipment, external air can easily enter the vacuum box through the gap at the opening, resulting in a decrease in the vacuum degree of the vacuum packaging machine. At the same time, the additional external drive will increase the use cost of the equipment.

[0004] To this end, a fully automatic food vacuum packaging machine is proposed to solve the problem that when the equipment is vacuuming, the outside air enters the vacuum box through the gap at the opening due to the opening connecting the external drive, thereby causing the vacuum degree of the vacuum packaging machine to decrease. At the same time, the additional external drive will increase the use cost of the equipment. Summary of the invention

[0005] The purpose of the present invention is to provide a fully automatic food vacuum packaging machine to solve the problem that when the equipment is vacuuming, the outside air enters the vacuum box through the gap at the opening due to the opening being connected to an external drive, thereby causing the vacuum degree of the vacuum packaging machine to decrease. At the same time, the additional external drive will increase the use cost of the equipment.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A fully automatic food vacuum packaging machine comprises a frame, a vacuum pump, a vacuum box, a rocker, a vacuum cover, a cylinder and a heat sealing strip, wherein the vacuum pump and the vacuum box are both mounted on the frame, the two ends of the rocker are respectively connected to the frame and the vacuum cover, the two ends of the cylinder are respectively connected to the frame and the rocker, a plurality of heat sealing strips are respectively mounted in the vacuum box and the vacuum cover, a clamping plate 1 and a clamping plate 2 are provided in the vacuum box, the clamping plate 1 and the clamping plate 2 are combined in a V shape, the clamping plate 1 and the clamping plate 2 are used to limit the distance between the material and a plurality of heat sealing strips, a fixing assembly is provided on the clamping assembly, a fixing frame is provided on the fixing assembly, a plurality of fixing frames are respectively mounted on the upper ends of the clamping plate 1 and the clamping plate 2, a material discharge assembly is provided on the vacuum cover, and the lower The material assembly is provided with a feeding plate, which is hinged on the vacuum box, and the fixing assembly fixes the side of the material by swinging the fixing frame. The feeding assembly drives the feeding plate to flip through the negative pressure when the equipment is vacuumed, and makes the fixing frame disengage from the fixation of the material. The first clamp and the second clamp define the distance between the material and the multiple heat sealing strips, avoiding the problem that the opening on the vacuum box is connected to an external drive, resulting in external air entering the vacuum box through the gap at the opening when the equipment is vacuumed, thereby causing the vacuum degree of the vacuum packaging machine to decrease, thereby ensuring the vacuum degree of the fully automatic food vacuum packaging machine when vacuuming and reducing the use cost of the equipment, while also ensuring the fully automatic food vacuum packaging machine The fixation and heat sealing effect of the material.

[0008] Preferably, the fixing assembly includes a transmission rod, a segmented gear and a full-segment gear, the first clamp plate is hinged on the blanking plate, the second clamp plate is hinged on the vacuum box, a plurality of the transmission rods are respectively mounted on the sides of the first clamp plate and the second clamp plate, and a plurality of the transmission rods are coaxial with the rotation axes of the first clamp plate and the second clamp plate, the segmented gear is mounted on the transmission rod on one side of the first clamp plate, and the full-segment gear is mounted on the transmission rod on one side of the second clamp plate, after the segmented gear is rotated to an angle symmetrical with the full-segment gear, the segmented gear meshes with the full-segment gear, and when the vacuum cover and the vacuum box are closed, the vacuum The vacuum cover will contact the fixing frame on one side of the splint one and push the fixing frame on one side of the splint one to swing toward the fixing frame on the second side of the splint. A leveling component is provided on one end of the fixing frames away from the first and second splints. When the fixing frame is in contact with the material, the leveling component levels the bag opening of the material. When the vacuum cover is in contact with the vacuum box, the fixing frame fixes the side of the material, thereby avoiding the material from bending during installation or vacuuming, causing the bag opening to deviate from the heat sealing position, thereby causing the heat sealing effect to decrease, thereby ensuring the sealing effect of the full-automatic food vacuum packaging machine.

[0009] Preferably, the leveling assembly includes a leveling block and a leveling spring, and multiple fixing frames are provided with a leveling plane on one end away from the first and second clamping plates, multiple leveling planes are inclined to the surface of the fixing frames, and multiple leveling planes are inclined outward from the center of multiple fixing frames, and multiple leveling grooves are opened on the multiple leveling planes, multiple leveling blocks are respectively slidably connected in the leveling grooves, multiple leveling springs are respectively sleeved in the leveling grooves, and both ends of multiple leveling springs are respectively connected to the fixing frame and the leveling block, so as to avoid the problem that the bag opening is in a slightly open state after the material is filled, and the uneven bag opening leads to a decrease in the heat sealing effect when the material is heat-sealed, thereby ensuring the sealing effect of the fully automatic food vacuum packaging machine.

[0010] Preferably, a positioning groove is provided on the vacuum box, and the positioning groove is provided between the first clamp plate and the second clamp plate, and the positioning groove is lower than the first clamp plate and the second clamp plate, so as to avoid the bending of the bottom contact surface of the material when the material is placed on the first clamp plate and the second clamp plate, resulting in the distance between the material and the heat sealing strip being offset. The problem that the bag mouth with height offset during heat sealing is prone to reduce the heat sealing effect, thereby ensuring the sealing effect of the fully automatic food vacuum packaging machine.

[0011] Preferably, the feeding assembly includes a sliding sleeve, a piston cylinder, a piston rod and a valve, the sliding sleeve is hinged on the feeding plate, the piston rod is hinged on the vacuum box, two ends of the piston rod are slidably connected in the sliding sleeve and the piston cylinder, the piston rod is slidably connected to one end of the piston cylinder to divide the interior of the piston cylinder into an atmospheric cavity and a vacuum cavity, the atmospheric cavity is located on a side of the piston cylinder close to the piston rod, the valve is installed on the piston cylinder, and two ends of the valve are connected with the vacuum cavity and the interior of the vacuum box respectively, the valve is larger when ventilated from the inside to the outside than when ventilated from the outside to the inside, the atmospheric cavity is a confined space, when the equipment is evacuated, the gas in the atmospheric cavity expands rapidly to push the piston rod toward the vacuum cavity, when the vacuum cover is opened, the feeding plate drives the splint and the fixing frame to slide down rapidly, avoiding the problem of untimely feeding of materials, resulting in a decrease in equipment packaging efficiency, ensuring the packaging efficiency of the fully automatic food vacuum packaging machine, and reducing equipment energy consumption.

[0012] Preferably, multiple positioning blocks are slidably connected at both ends of the positioning groove, multiple transmission rods on one side of the splint are all processed with threads, and the threads processed on the multiple transmission rods on one side of the splint are of different rotation directions, and multiple positioning blocks are respectively threadedly connected with the multiple transmission rods on one side of the splint, thereby avoiding the problem of center deviation when placing materials, resulting in the fixing frame not being fixed in place, and ensuring the fixing effect of the fixing frame in the fully automatic food vacuum packaging machine.

[0013] Preferably, a rubber pad is provided on one end of the leveling block close to the material, and the rubber pad is processed into a corrugated shape, thereby avoiding the problem that the leveling block loses control of the bag opening due to too low friction and toughness of the leveling block when leveling the bag opening, thereby ensuring the leveling effect of the leveling block in the fully automatic food vacuum packaging machine, thereby ensuring the sealing effect of the fully automatic food vacuum packaging machine.

[0014] Preferably, a fixed section and a swing section are provided on the fixed frame on one side of the clamping plate, and the fixed section and the swinging section are hinged by limited rotation. A coil spring is installed at the hinge of the fixed section and the swinging section, and the coil spring drives the swinging section to swing in two directions away from the clamping plate, thereby avoiding the problem of the raised rubber pad causing the sliding material to get stuck when the material is unloaded, thereby ensuring the stability of the full-automatic food vacuum packaging machine when unloading.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention provides a clamping plate 1 and a clamping plate 2 in a vacuum box, wherein the clamping plate 1 and the clamping plate 2 are used to limit the distance between the material and a plurality of heat sealing strips, and a fixing assembly is provided on the clamping plate 1 and the clamping plate 2, and a fixing frame is provided on the fixing assembly, and a feeding assembly is provided on the vacuum cover, and a feeding plate is provided on the feeding assembly, and the fixing assembly fixes the side of the material by swinging the fixing frame, and the feeding assembly flips by driving the feeding plate to make the fixing frame separate from the fixation of the material, thereby avoiding the problem that the vacuum degree of the vacuum packaging machine decreases due to a gap on the vacuum box, ensuring the vacuum degree of the fully automatic food vacuum packaging machine when evacuating the vacuum and reducing the use cost of the equipment.

[0017] 2. The present invention provides a leveling component on one end of multiple fixing frames away from the first and second clamping plates, the leveling component includes a leveling block and a leveling spring, and multiple fixing frames are provided with a leveling plane on one end away from the first and second clamping plates, and multiple leveling planes are provided with leveling grooves. When the fixing frames are in contact with the materials, the leveling block squeezes and pulls the bag opening of the materials through the pressure of the leveling plane and the leveling spring, so as to avoid the problem that the bag opening is in a slightly open state after the material is filled, and the uneven bag opening leads to a decrease in the heat sealing effect when the material is heat-sealed, thereby ensuring the sealing effect of the full-automatic food vacuum packaging machine.

[0018] 3. The present invention provides a positioning groove on the vacuum box, wherein the positioning groove is provided between the first and second splints and the positioning groove is lower than the first and second splints. When the material is placed on the first and second splints, the bottom contact surface of the material is prone to bending, resulting in a displacement of the distance between the material and the heat sealing strip. When heat sealing is performed, the height of the material and the heat sealing strip is offset, which easily leads to a decrease in the heat sealing effect of the bag opening, thereby ensuring the sealing effect of the fully automatic food vacuum packaging machine and the stability when placing materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the fully automatic food vacuum packaging machine of the present invention;

[0020] Figure 2 It is a partial structural schematic diagram of the fully automatic food vacuum packaging machine of the present invention;

[0021] Figure 3 For the present invention Figure 2 The enlarged view of point A in the middle;

[0022] Figure 4 For the present invention Figure 2 The enlarged view of point B in the middle;

[0023] Figure 5 For the present invention Figure 3 Sectional view at CC;

[0024] Figure 6It is a state diagram of the fixed frame of the fully automatic food vacuum packaging machine of the present invention when loading;

[0025] Figure 7 This is a state diagram of the fixed frame of the fully automatic food vacuum packaging machine of the present invention when clamping materials;

[0026] Figure 8 This is a state diagram of the fixed rack in the full-automatic food vacuum packaging machine of the present invention when unloading materials.

[0027] In the figure: 1, frame; 2, vacuum pump; 301, vacuum box; 302, rocker; 303, vacuum cover; 304, cylinder; 305, heat seal strip; 401, clamping plate one; 402, clamping plate two; 501, fixed frame; 502, transmission rod; 503, segmented gear; 504, full-segment gear; 505, positioning groove; 601, leveling block; 602, leveling spring; 603, leveling surface; 604, leveling groove; 605, rubber pad; 701, blanking plate; 702, sliding sleeve; 703, piston cylinder; 704, piston rod; 705, valve; 706, atmospheric cavity; 707, vacuum cavity; 8, positioning block; 901, fixed section; 902, swing section. DETAILED DESCRIPTION

[0028] See also Figures 1 to 8 The present invention provides a fully automatic food vacuum packaging machine, and the technical solution is as follows:

[0029] A fully automatic food vacuum packaging machine comprises a frame 1, a vacuum pump 2, a vacuum box 301, a rocker 302, a vacuum cover 303, a cylinder 304 and a heat sealing strip 305. The vacuum pump 2 and the vacuum box 301 are both mounted on the frame 1. The two ends of the rocker 302 are respectively connected to the frame 1 and the vacuum cover 303. The two ends of the cylinder 304 are respectively connected to the frame 1 and the rocker 302. A plurality of heat sealing strips 305 are respectively mounted in the vacuum box 301 and the vacuum cover 303. There are a clamping plate 401 and a clamping plate 402, the clamping plate 401 and the clamping plate 402 are combined in a V shape, the clamping plate 401 and the clamping plate 402 are used to limit the distance between the material and the plurality of heat sealing strips 305, the clamping plate 401 and the clamping plate 402 are provided with a fixing assembly, the fixing assembly is provided with a fixing frame 501, and the plurality of fixing frames 501 are respectively installed on the upper ends of the clamping plate 401 and the clamping plate 402, and a material discharge assembly is provided on the vacuum cover 303, and a material discharge plate 7 is provided on the material discharge assembly 01, the unloading plate 701 is hinged on the vacuum box 301, and the full-automatic food vacuum packaging machine places the material between the first clamp 401 and the second clamp 402 through the mechanical arm. The first clamp 401 and the second clamp 402 limit the distance between the material and the multiple heat sealing strips 305 through the V-shaped structure, and also play a guiding role. In the process of closing the vacuum cover 303 and the vacuum box 301, the fixing component pushes the fixing frame 501 to swing and fix the side of the material through the pressure of the vacuum cover 303. The unloading component drives the unloading plate 701 to flip through the negative pressure when the vacuum pump 2 is evacuated, and the fixing frame 501 is separated from the fixation of the material, avoiding the opening on the vacuum box 301 to connect to the external drive, resulting in the external air entering the vacuum box 301 through the gap at the opening when the equipment is evacuated, thereby causing the vacuum degree of the vacuum packaging machine to decrease, thereby ensuring the vacuum degree of the full-automatic food vacuum packaging machine when evacuating, and reducing the use cost of the equipment.

[0030] See also Figures 1 to 8The fixed assembly includes a transmission rod 502, a segmented gear 503 and a full-segment gear 504. The first splint 401 is hinged on the blanking plate 701, and the second splint 402 is hinged on the vacuum box 301. Multiple transmission rods 502 are respectively installed on the sides of the first splint 401 and the second splint 402, and multiple transmission rods 502 are coaxial with the rotation axes of the first splint 401 and the second splint 402. The segmented gear 503 is installed on the transmission rod 502 on one side of the first splint 401, and the full-segment gear 504 is installed on the transmission rod 502 on one side of the second splint 402. After the segmented gear 503 rotates to an angle symmetrical with the full-segment gear 504, the segmented gear 503 meshes with the full-segment gear 504. When the vacuum cover 303 and the vacuum box 301 are closed, the vacuum cover 303 will contact the fixed frame 501 on one side of the first splint 401 and push the fixed frame 501 on one side of the first splint 401 toward the second splint. The fixing frame 501 on one side of 402 swings in the direction of each other, and a leveling component is provided on one end of the plurality of fixing frames 501 away from the first clamp plate 401 and the second clamp plate 402. When the fixing frame 501 is in contact with the material, the leveling component levels the bag opening of the material. In the process of closing the vacuum cover 303 and the vacuum box 301, the pressure when the vacuum cover 303 is closed pushes the fixing frame 501 to move toward the vacuum box 301. When the segmented gear 503 rotates to an angle symmetrical to the full-segment gear 504, the segmented gear 503 meshes with the full-segment gear 504, and drives the full-segment gear 504 to drive the second clamp plate 402 toward the material until it is close to the surface of the material, thereby fixing the side of the material, avoiding the material from bending during installation or vacuuming, causing the bag opening to deviate from the heat sealing position, and then causing the heat sealing effect to decrease, thereby ensuring the sealing effect of the fully automatic food vacuum packaging machine.

[0031] It is worth noting that a positioning groove 505 is provided on the vacuum box 301, and the positioning groove 505 is provided between the first splint 401 and the second splint 402, and the positioning groove 505 is lower than the first splint 401 and the second splint 402. When the material is placed on the first splint 401 and the second splint 402, the bottom contact surface of the material is prone to bending, resulting in the distance between the material and the heat sealing strip 305 being offset. When heat sealing is performed, the height of the material and the heat sealing strip 305 is offset, which easily leads to the problem of reduced heat sealing effect of the bag opening. The material avoids the above problems through the cooperation of the first splint 401, the second splint 402 and the positioning groove 505, thereby ensuring the sealing effect of the full-automatic food vacuum packaging machine and the stability when placing materials.

[0032] It is also worth noting that multiple positioning blocks 8 are slidably connected at both ends of the positioning groove 505, and multiple transmission rods 502 on one side of the splint 401 are all processed with threads, and the threads processed on the multiple transmission rods 502 on one side of the splint 401 have different rotation directions. The multiple positioning blocks 8 are respectively threadedly connected to the multiple transmission rods 502 on one side of the splint 401. When the fixed frame 501 is moved toward the vacuum box 301 by the thrust of the vacuum cover 303, the rotation of the multiple transmission rods 502 on one side of the splint 401 will respectively drive the multiple positioning blocks 8 to move. Since the threads processed on the multiple transmission rods 502 on one side of the splint 401 have different rotation directions, the multiple positioning blocks 8 on one side of the splint 401 will move toward the splint 401 at this time, and drive the offset materials in the positioning groove 505 to move, thereby avoiding the problem that the center is offset when the material is placed, resulting in the fixed frame 501 not being fixed in place, thereby ensuring the fixing effect of the fixed frame 501 in the fully automatic food vacuum packaging machine.

[0033] The leveling assembly includes a leveling block 601 and a leveling spring 602. A plurality of fixing frames 501 are provided with a leveling plane 603 on one end away from the first clamping plate 401 and the second clamping plate 402. The plurality of leveling planes 603 are inclined to the surface of the fixing frame 501, and the plurality of leveling planes 603 are inclined outward from the center of the plurality of fixing frames 501. The plurality of leveling planes 603 are provided with a leveling groove 604. The plurality of leveling blocks 601 are respectively slidably connected in the leveling groove 604. The plurality of leveling springs 602 are respectively sleeved in the leveling groove 604. The two ends of the plurality of leveling springs 602 are respectively connected to the fixing frame 501 and the leveling block 601. When the frame 501 is fitted with the material, since the multiple flat surfaces 603 are inclined to the surface of the fixed frame 501, and the multiple flat surfaces 603 are inclined outward from the center of the multiple fixed frames 501, the leveling block 601 can squeeze the material bag opening through the pressure of the flat surfaces 603 and the leveling spring 602. At the same time, through the inclination direction of the flat surfaces 603, the leveling block 601 can produce the effect of pulling the material bag opening away from the two sides of the splint, thereby avoiding the problem that the bag opening is in a slightly open state after the material is filled, and the uneven bag opening causes the heat sealing effect to decrease when the material is heat-sealed, thereby ensuring the sealing effect of the fully automatic food vacuum packaging machine.

[0034] It is worth noting that a rubber pad 605 is provided on one end of the leveling block 601 close to the material, and the rubber pad 605 is processed into a corrugated shape. When the leveling block 601 applies pressure to the bag opening and pulls it away from the two sides of the splint, the rubber pad 605 levels the material through its own friction coefficient and ductility, thereby avoiding the problem that when the leveling block 601 levels the bag opening, the friction force and toughness of the leveling block 601 are too low, causing the leveling block 601 to lose control of the bag opening, thereby ensuring the leveling effect of the leveling block 601 in the fully automatic food vacuum packaging machine, thereby ensuring the sealing effect of the fully automatic food vacuum packaging machine.

[0035] See also Figures 6 to 8 The blanking assembly includes a sleeve 702, a piston cylinder 703, a piston rod 704 and a valve 705. The sleeve 702 is hinged on the blanking plate 701, and the piston rod 704 is hinged on the vacuum box 301. The two ends of the piston rod 704 are respectively slidably connected in the sleeve 702 and the piston cylinder 703. The piston rod 704 is slidably connected to one end of the piston cylinder 703 to divide the interior of the piston cylinder 703 into an atmospheric cavity 706 and a vacuum cavity 707. The atmospheric cavity 706 is located on the side of the piston cylinder 703 close to the piston rod 704. The valve 705 is installed on the piston cylinder 703, and the two ends of the valve 705 are respectively connected to the vacuum cavity 707. The cavity 707 is connected to the inside of the vacuum box 301. The valve 705 is larger when ventilating from the inside to the outside than when ventilating from the outside to the inside. The atmospheric cavity 706 is a closed space. When the fully automatic food vacuum packaging machine is evacuating, the gas in the atmospheric cavity 706 expands, and the air in the vacuum cavity 707 is discharged outward through the valve 705. At this time, the piston rod 704 is simultaneously subjected to the positive pressure of the atmospheric cavity 706 and the negative pressure of the vacuum cavity 707 and moves away from the sliding sleeve 702. At this time, because the vacuum cover 303 is not opened, the fixing frame 501 will not be opened due to the loss of the support of the blanking plate 701. When the vacuum is When the cover 303 is opened, the fixing frame 501 will be affected by gravity and swing toward the vacuum cover 303 due to the loss of support of the unloading plate 701. At this time, the unloading plate 701 loses the support of the piston rod 704, which will drive the fixing frame 501 and the clamping plate 401 to swing toward the lower end of the vacuum box 301. After losing the supporting force, the material falls to the next process, avoiding the problem of untimely material unloading, which leads to a decrease in equipment packaging efficiency, ensuring the packaging efficiency of the automatic food vacuum packaging machine, and reducing equipment energy consumption. It is worth noting that when the vacuum cover 303 is opened, the negative pressure in the vacuum box 301 will disappear. At this time, since the atmospheric chamber 706 is in a sealed state, negative pressure will be generated in the atmospheric chamber 706. In order to restore the original pressure in the atmospheric chamber 706, the piston rod 704 will be driven to move toward the direction of the sleeve 702. However, since the vacuum chamber 707 has been emptied of air at this time, air can only be filled into the vacuum chamber 707 through the valve 705. Because the valve 705 is larger when ventilating from the inside to the outside than when ventilating from the outside to the inside, the return speed of the piston rod 704 will be slowed down at this time, so as to avoid the problem that after the atmospheric pressure in the vacuum box 301 is restored, the piston rod 704 immediately returns, resulting in the blanking plate 701 not completing the blanking action.

[0036] It is worth noting that a fixed section 901 and a swing section 902 are provided on the fixed frame 501 on one side of the clamp plate 1 401. The fixed section 901 and the swing section 902 are hinged by limited rotation. A coil spring is installed at the hinge of the fixed section 901 and the swing section 902. The coil spring drives the swing section 902 to swing away from the clamp plate 2 402. When the material is unloaded, the swing section 902 will be swung counterclockwise by the action of the coil spring. At this time, the raised rubber pad 605 will be away from the sliding path of the material to avoid the problem of material jamming, thereby ensuring the stability of the full-automatic food vacuum packaging machine when unloading.

[0037] While working, see Figures 1 to 8 When the vacuum cover 303 and the vacuum box 301 are in the open state, the robot arm places the material between the clamp plate 1 401 and the clamp plate 2 402, and the material slides into the positioning groove 505 through the V-shaped angle between the clamp plate 1 401 and the clamp plate 2 402. At this time, the swing section 902 on the fixed frame 501 loses the supporting pressure of the vacuum cover 303 and is pushed by the coil spring to swing away from the vacuum box 301. This design avoids the problem that the fixed frame 501 hinders the travel route of the robot arm when the robot arm is loading. At the same time, when unloading, the swing section 902 will be affected by the coil spring to swing counterclockwise. At this time, the raised rubber pad 605 will be away from the sliding route of the material to avoid the problem of material jamming. After the material is installed, the cylinder 304 drives the rocker 302 to move the vacuum cover 303 to the vacuum box The vacuum hood 303 pushes the swinging section 902 in the direction of 301. When the inner wall of the vacuum hood 303 contacts the swinging section 902, the vacuum hood 303 will push the swinging section 902 to swing clockwise, and at the same time the coil spring will be compressed until the swinging section 902 is aligned with the fixed section 901. At this time, the driving force of the vacuum hood 303 will drive the fixing frame 501 on one side of the clamping plate 401 to swing together with the clamping plate 401 in the direction of the clamping plate 2 402. When the segmented gear 503 rotates to an angle symmetrical to the full-section gear 504, the segmented gear 503 meshes with the full-section gear 504, and drives the full-section gear 504 to drive the clamping plate 2 402 to move closer to the material until it is close to the surface of the material, thereby fixing the side of the material, thereby avoiding the material from bending during installation or vacuuming, causing the bag opening to deviate from the heat sealing position, and thus causing the heat sealing effect to decrease.

[0038] It is worth noting that when the fixed frame 501 is moved toward the vacuum box 301 by the thrust of the vacuum cover 303, the rotation of the multiple transmission rods 502 on one side of the splint 401 will respectively drive the multiple positioning blocks 8 to move. Since the threads processed on the multiple transmission rods 502 on one side of the splint 401 have different rotation directions, the multiple positioning blocks 8 on one side of the splint 401 will move toward the splint 401 at this time, and drive the offset materials in the positioning groove 505 to move, thereby avoiding the problem that the center of the material is offset when the material is placed, resulting in the fixed frame 501 not being fixed in place, thereby ensuring the fixing effect of the fixed frame 501 in the full-automatic food vacuum packaging machine.

[0039] It is also worth noting that when the fixing frame 501 is in contact with the material, since the multiple flat surfaces 603 are inclined to the surface of the fixing frame 501, and the multiple flat surfaces 603 are inclined outward from the center of the multiple fixing frames 501, the leveling block 601 supported by the leveling spring 602 will squeeze the material bag opening through the pressure of the flat surfaces 603 and the leveling spring 602. At the same time, the leveling block 601 produces the effect of pulling the material bag opening away from the two sides of the splint through the inclined direction of the flat surfaces 603, thereby avoiding the problem that the bag opening is in a slightly open state after the material is filled, and the uneven bag opening leads to a reduced heat sealing effect when the material is heat-sealed, thereby ensuring the sealing effect of the fully automatic food vacuum packaging machine.

[0040] Furthermore, after the vacuum cover 303 and the vacuum box 301 are tightly closed, the equipment performs vacuuming, the gas in the atmospheric chamber 706 expands, and the air in the vacuum chamber 707 is discharged outward through the valve 705. At this time, the piston rod 704 is simultaneously subjected to the positive pressure of the atmospheric chamber 706 and the negative pressure of the vacuum chamber 707 and moves away from the sliding sleeve 702. At this time, because the vacuum cover 303 is not opened, the fixing frame 501 will not open due to the loss of the support of the blanking plate 701. When the vacuum degree in the vacuum box 301 reaches the set value, multiple heat sealing strips 305 heat seal the material bag mouth at the same time. After waiting for the heat sealing to be completed, the cylinder 3 04 drives the vacuum cover 303 to open. At this time, the swing section 902 loses the support of the vacuum cover 303 and is driven by the coil spring to swing counterclockwise. At the same time, the fixed frame 501 will be affected by gravity and swing toward the vacuum cover 303 due to the loss of support from the unloading plate 701. At this time, the unloading plate 701 loses the support of the piston rod 704 and will drive the fixed frame 501 and the clamping plate 401 to swing toward the lower end of the vacuum box 301. The material loses its supporting force and falls to the next process, avoiding the problem of untimely material unloading, which leads to a decrease in equipment packaging efficiency, ensuring the packaging efficiency of the full-automatic food vacuum packaging machine and reducing equipment energy consumption.

[0041] It is worth noting that when the vacuum cover 303 is opened, the negative pressure in the vacuum box 301 will disappear. At this time, since the atmospheric chamber 706 is in a sealed state, negative pressure will be generated in the atmospheric chamber 706. In order to restore the original pressure in the atmospheric chamber 706, the piston rod 704 will be driven to move toward the direction of the sleeve 702. However, at this time, since the vacuum chamber 707 has been emptied of air, air can only be filled into the vacuum chamber 707 through the valve 705. Because the valve 705 is larger when ventilating from the inside to the outside than when ventilating from the outside to the inside, the return speed of the piston rod 704 will be slowed down at this time, so as to avoid the problem that after the atmospheric pressure in the vacuum box 301 is restored, the piston rod 704 immediately returns, resulting in the blanking plate 701 not completing the blanking action.

[0042] Furthermore, after the unloading action is completed, the piston rod 704 returns to its original position. At this time, the unloading plate 701 will also be pushed by the piston rod 704 back to the position before loading, waiting for the robot arm to complete the next round of loading action.

[0043] A specific implementation mode of the present invention is described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the implementation mode described above; for those skilled in the art, various changes, modifications, substitutions and variations of these implementation modes without departing from the principles and ideas of the present invention should still fall within the protection scope of the present invention.

Claims

1. A fully automatic food vacuum packaging machine, characterized in that: The vacuum box (301) comprises a frame (1), a vacuum pump (2), a vacuum box (301), a rocker (302), a vacuum cover (303), a cylinder (304) and a heat sealing strip (305), wherein the vacuum pump (2) and the vacuum box (301) are both mounted on the frame (1), the two ends of the rocker (302) are respectively connected to the frame (1) and the vacuum cover (303), the two ends of the cylinder (304) are respectively connected to the frame (1) and the rocker (302), a plurality of heat sealing strips (305) are respectively mounted in the vacuum box (301) and the vacuum cover (303), the vacuum box (301) is provided with a first clamping plate (401) and a second clamping plate (402), the first clamping plate (401) and the second clamping plate (402) are combined in a V-shape, the first clamping plate (401) and the clamping plate (402) are respectively connected to the first clamping plate (401) and the second clamping plate (402), and the first clamping plate (401) and the clamping plate (402) are respectively connected to the first clamping plate (401) and the second clamping plate (402). Plate 2 (402) is used to limit the distance between the material and multiple heat sealing strips (305). The clamping plate 1 (401) and the clamping plate 2 (402) are provided with a fixing component, and the fixing component is provided with a fixing frame (501). Multiple fixing frames (501) are respectively installed on the upper ends of clamping plate 1 (401) and clamping plate 2 (402). The vacuum cover (303) is provided with a material discharge component, and the material discharge component is provided with a material discharge plate (701). The material discharge plate (701) is hinged on the vacuum box (301). The fixing component fixes the side of the material by swinging the fixing frame (501). The negative pressure when the equipment is vacuumed drives the material discharge plate (701) to flip over, and the fixing frame (501) is separated from the material.

2. A fully automatic food vacuum packaging machine according to claim 1, characterized in that: The fixing assembly includes a transmission rod (502), a segmented gear (503) and a full-segment gear (504); the first clamp plate (401) is hinged on the blanking plate (701); the second clamp plate (402) is hinged on the vacuum box (301); a plurality of transmission rods (502) are respectively mounted on the sides of the first clamp plate (401) and the second clamp plate (402); and a plurality of transmission rods (502) are coaxial with the rotation axes of the first clamp plate (401) and the second clamp plate (402); the segmented gear (503) is mounted on the transmission rod (502) on one side of the first clamp plate (401); and the full-segment gear (504) is mounted on the transmission rod (502) on one side of the second clamp plate (402). After the segmented gear (503) rotates to an angle symmetrical to the full-segment gear (504), the segmented gear (503) meshes with the full-segment gear (504). When the vacuum cover (303) and the vacuum box (301) are closed, the vacuum cover (303) will contact the fixing frame (501) on the side of the first clamp (401) and push the fixing frame (501) on the side of the first clamp (401) to swing toward the fixing frame (501) on the side of the second clamp (402). A leveling component is provided on one end of the plurality of fixing frames (501) away from the first clamp (401) and the second clamp (402). When the fixing frame (501) is in contact with the material, the leveling component levels the material bag opening.

3. A fully automatic food vacuum packaging machine according to claim 2, characterized in that: The leveling assembly comprises a leveling block (601) and a leveling spring (602); a plurality of fixing frames (501) are provided with a leveling plane (603) on one end away from the first clamping plate (401) and the second clamping plate (402); the plurality of leveling planes (603) are inclined to the surface of the fixing frames (501), and the plurality of leveling planes (603) are inclined outward from the center of the plurality of fixing frames (501); a plurality of leveling planes (603) are provided with a leveling groove (604); the plurality of leveling blocks (601) are respectively slidably connected in the leveling groove (604); the plurality of leveling springs (602) are respectively sleeved in the leveling groove (604); and the two ends of the plurality of leveling springs (602) are respectively connected to the fixing frame (501) and the leveling block (601).

4. A fully automatic food vacuum packaging machine according to claim 2, characterized in that: The vacuum box (301) is provided with a positioning groove (505), and the positioning groove (505) is arranged between the first clamping plate (401) and the second clamping plate (402), and the positioning groove (505) is lower than the first clamping plate (401) and the second clamping plate (402).

5. A fully automatic food vacuum packaging machine according to claim 4, characterized in that: The blanking assembly comprises a sleeve (702), a piston cylinder (703), a piston rod (704) and a valve (705), wherein the sleeve (702) is hinged on the blanking plate (701), and the piston rod (704) is hinged on the vacuum box (301), and the two ends of the piston rod (704) are respectively slidably connected in the sleeve (702) and the piston cylinder (703), and the piston rod (704) is slidably connected to one end of the piston cylinder (703) to close the piston cylinder (703) ) is divided into an atmospheric cavity (706) and a vacuum cavity (707), wherein the atmospheric cavity (706) is located on a side of the piston cylinder (703) close to the piston rod (704), the valve (705) is installed on the piston cylinder (703), and the two ends of the valve (705) are respectively connected to the vacuum cavity (707) and the interior of the vacuum box (301), the valve (705) is larger when ventilating from the inside to the outside than when ventilating from the outside to the inside, and the atmospheric cavity (706) is a closed space.

6. A fully automatic food vacuum packaging machine according to claim 4, characterized in that: A plurality of positioning blocks (8) are slidably connected in the two ends of the positioning groove (505), and the plurality of transmission rods (502) on one side of the clamping plate (401) are all processed with threads, and the threads processed on the plurality of transmission rods (502) on one side of the clamping plate (401) have different rotation directions, and the plurality of positioning blocks (8) are respectively threadedly connected to the plurality of transmission rods (502) on one side of the clamping plate (401).

7. A fully automatic food vacuum packaging machine according to claim 3, characterized in that: A rubber pad (605) is provided on one end of the leveling block (601) close to the material, and the rubber pad (605) is processed into a corrugated shape.

8. A fully automatic food vacuum packaging machine according to claim 7, characterized in that: A fixed section (901) and a swing section (902) are provided on the fixed frame (501) on one side of the clamp plate one (401), and the fixed section (901) and the swing section (902) are hinged via limited rotation. A coil spring is installed at the hinge between the fixed section (901) and the swing section (902), and the coil spring drives the swing section (902) to swing in a direction away from the clamp plate two (402).

Images