Automatic sausage packaging machine

Abstract

The invention relates to the technical field of food packaging, and particularly discloses an automatic sausage packaging machine which comprises a machine frame and a machine cover fixedly installed at the top of the machine frame, a feeding conveying belt and a packaging conveying belt which are distributed left and right and used for conveying packaging bags are arranged at the top of the machine frame, and a supporting plate is fixedly installed between the left inner wall and the right inner wall of the machine cover; the top of the supporting plate is fixedly provided with a cylinder, and the output end of the cylinder slidably penetrates through the supporting plate and is fixedly provided with a sealing plate. Through mutual cooperation of the self-resetting inserting and pasting assembly, the triggering assembly, the self-resetting clamping and pulling assembly and the driving assembly, the operation that a worker manually inserts the packaging bag into the bag opening position of the packaging bag, presses the bag opening and then pulls the bag opening towards the two sides for leveling is simulated, and therefore the effect of integrated pulling, pressing and leveling is achieved; and the operations are integrated into the sealing cover, so that the manual operation amount required by the work of the automatic packaging machine is further reduced, the full-automatic effect is realized, and the automation degree, the integration degree and the production efficiency are greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of food packaging, and more particularly to an automatic sausage packaging machine. Background Art

[0002] Sausage is a very popular processed meat product. It is made by mincing meat, adding various seasonings and mixing them evenly before filling them into natural or synthetic casings. The production of sausage generally includes the following processes: raw material preparation, cutting and mincing, seasoning, filling, forming, heat treatment, cooling, packaging and inspection before shipment. Among them, the heat-treated sausage needs to be cooled and then packaged for easy storage and transportation. Vacuum packaging is one of the most common ways to package sausages. By extracting the air in the packaging bag and heat-sealing the bag, the oxygen content is reduced, thereby inhibiting the growth of microorganisms and extending the shelf life of the product.

[0003] Although the current automatic sausage packaging machine has eliminated manual operation by staff in most of the workstations, the sausage bags need to be leveled before entering the vacuum packaging machine. Since it is necessary to wait for the previous sausage bag to be vacuum packed, staff are currently dispatched between the bagging station and the vacuum packaging station to level the mouth of the waiting bag. Firstly, this leveling method will increase the manual operation and labor cost of the packaging machine to a certain extent, and the degree of automation and integration will be reduced; secondly, when the production line speed is fast, the staff may not be able to complete all operations quickly, so the production line needs to be slowed down in time, which will reduce production efficiency. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides an automatic sausage packaging machine, including a frame and a hood fixedly installed on the top of the frame, the top of the frame is provided with a feeding conveyor belt and a packaging conveyor belt distributed on the left and right and used for conveying packaging bags, a support plate is fixedly installed between the left and right inner walls of the hood, a cylinder is fixedly installed on the top of the support plate, the cylinder output end slides through the support plate and is fixedly installed with a sealing plate, and the outer side of the cylinder output end is slidably connected with a sealing cover covering the outer side of the sealing plate, the sealing plate is slidably connected to the inner wall of the sealing cover, a pulling, pressing and flattening mechanism, an exhaust mechanism and a heat sealing mechanism are arranged in the sealing cover, the pulling, pressing and flattening mechanism includes a self-resetting plug-in assembly, a trigger assembly, a self-resetting clamping assembly and a driving assembly located below the sealing plate, and two of the self-resetting plug-in assembly, the trigger assembly and the self-resetting clamping assembly are symmetrically arranged front and back.

[0005] The pulling, pressing and leveling mechanism also includes a cover plate, and the self-resetting plug-in assembly includes a slide groove 1 opened at the bottom of the cover plate and a slider 1 slidably connected in the slide groove 1. A moving plate is fixedly installed at the bottom of the slider 1, and the self-resetting clamping and pulling assembly is arranged on the corresponding moving plate.

[0006] Furthermore, the self-resetting plug-in assembly also includes a mounting plate fixedly mounted on the bottom of the cover plate 806 and a reset spring 1 fixedly mounted between the mounting plate and the corresponding movable plate, a limit rod 2 is fixedly mounted on one side of the movable plate close to the mounting plate, the limit rod 2 slides through the mounting plate and is located on the inner side of the reset spring 1, and a plurality of sliding steel balls are rotatably mounted on the bottom of the movable plate.

[0007] Furthermore, the trigger assembly includes a wedge rod fixedly mounted on the bottom of the sealing plate and a wedge block fixedly mounted on the side of the movable plate close to the inner wall of the sealing cover and cooperating with the wedge rod. The wedge rod is provided with a slot cooperating with the wedge block. When the slot moves to align with the wedge block, the return spring pushes the movable plate to drive the wedge block to be inserted into the slot.

[0008] Furthermore, a fixed sharp corner block and a movable sharp corner block are respectively fixedly installed on the side of the movable plate close to the inner wall of the sealing cover facing it, and the adjacent fixed sharp corner blocks and movable sharp corner blocks cooperate with each other and are both located on the left side of the wedge block.

[0009] Furthermore, the self-resetting clamping assembly includes two slide grooves 2 that are opened on the side of the movable plate away from the corresponding wedge block and arranged left and right, and a slider 2 that is slidably connected to the slide grooves 2. There is a height difference between the two slide grooves 2 arranged left and right. A tooth plate is fixedly installed on the side of the slider 2 away from the corresponding movable plate, and a splint is fixedly installed on the side of the tooth plate away from the slider 2. The teeth of the two tooth plates are close to each other, and pulleys are rotatably installed on the sides of the two splints that are close to each other.

[0010] Furthermore, the driving assembly includes a gear rotatably mounted on the side of the moving plate away from the wedge block and meshing with the two tooth plates, and two return springs 2 fixedly mounted on the top of the cover plate, a driving plate being commonly mounted on the top of the two return springs 2, two front-to-back symmetrical driving rods being fixedly mounted on the bottom of the driving plate, lower pressure plates being fixedly mounted on the adjacent sides of the two tooth plates on the right side, and the bottom ends of the front and rear driving rods both slide through the cover plate and cooperate with the corresponding lower pressure plates.

[0011] Furthermore, the heat sealing mechanism includes an electric push rod fixedly installed on the bottom of the cover plate and a hot pressure head fixedly installed on the output end of the electric push rod. The hot pressure head is located between the front and rear symmetrical clamping plates. After the vacuuming is completed, the electric push rod drives the hot pressure head to heat seal the opening of the packaging bag.

[0012] Furthermore, the vacuum mechanism includes an electric push rod 2 fixedly installed on the left inner wall of the sealing cover and a pipe sleeve fixedly installed on the output end of the electric push rod 2, an vacuum pipe is fixedly installed on the lower end of the pipe sleeve, the left end of the vacuum pipe is fixedly passed through the sealing cover and is connected to an external vacuum pump, and the right end of the vacuum pipe is installed with a plate-shaped suction head connected to it.

[0013] Furthermore, the pulling, pressing and leveling mechanism also includes a plurality of strong springs fixedly mounted on the bottom of the sealing plate, a cover plate fixedly mounted between the bottom ends of the plurality of strong springs, two front-to-back symmetrical side plates fixedly mounted on the bottom of the cover plate, and the side plates are located on the right side of the movable plate, and a plurality of limit rods are fixedly mounted on the bottom of the sealing plate, which slide through the cover plate and are located on the inner sides of the corresponding strong springs.

[0014] Furthermore, a driving motor is fixedly mounted on the inner wall at the bottom of the frame, and the driving motor drives a feeding conveyor belt and a packaging conveyor belt to transport packaging bags through a belt transmission.

[0015] The beneficial effects of the present invention are as follows: 1. The present invention simulates the operation of a worker manually inserting into the bag opening of the packaging bag and pressing the bag opening, and then pulling the bag opening to both sides to flatten it, through the cooperation of the self-resetting plug-in assembly, the trigger assembly, the self-resetting clamping assembly and the driving assembly, thereby achieving an integrated pulling, pressing and flattening effect, and integrating these operations into the interior of the sealing cover, further reducing the amount of manual operation required for the automatic packaging machine to work, achieving a full automation effect, greatly improving the degree of automation, integration and production efficiency, and reducing labor costs.

[0016] 2. By simulating the manual leveling operation of the staff, it can prevent wrinkles at the bag mouth, avoid affecting the vacuum effect during the vacuuming process, and avoid wrinkles or air leakage caused by the unevenness of the bag mouth during heat sealing, thereby greatly improving the packaging quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0018] Figure 2 It is a schematic diagram of the three-dimensional structure of the feeding conveyor belt, the packaging conveyor belt, the machine cover and the frame part of the present invention.

[0019] Figure 3 It is a schematic diagram of the three-dimensional structure of the sealing cover, sealing plate, packaging bag, cylinder and exhaust pipe of the present invention.

[0020] Figure 4 It is a partial three-dimensional structural schematic diagram of the heat sealing mechanism, sealing plate, cover plate, movable plate and wedge block of the present invention.

[0021] Figure 5 It is a partial three-dimensional structural schematic diagram of the sealing plate, wedge-shaped rod, fixed sharp corner block and movable sharp corner block of the present invention.

[0022] Figure 6 The present invention Figure 5 A partial enlarged view of part A.

[0023] Figure 7It is a partial structural sectional view of the sealing plate, wedge rod, moving plate, gear, tooth plate and clamping plate of the present invention.

[0024] Figure 8 It is a three-dimensional structural schematic diagram of the slider 2, gear, tooth plate, lower pressure plate, clamping plate and pulley part of the present invention.

[0025] In the figure: 1, frame; 2, machine cover; 3, feeding conveyor belt; 4, packaging conveyor belt; 5, support plate; 6, cylinder; 7, heat sealing mechanism; 8, pulling and pressing and leveling mechanism; 9, exhaust mechanism; 10, sealing cover; 11, sealing plate; 12, packaging bag; 13, driving motor; 701, electric push rod 1; 702, hot pressing head; 801, self-resetting plug-in assembly; 802, trigger assembly; 803, self-resetting clamping assembly; 804, driving assembly; 805, strong spring; 806, cover plate; 807, limit rod 1; 808, side plate; 8011, slide groove 1; 8012, slider 1; 8013 , moving plate; 8014, mounting plate; 8015, reset spring one; 8016, limit rod two; 8017, sliding steel ball; 8021, wedge rod; 8022, wedge block; 8023, slot; 8024, fixed sharp block; 8025, moving sharp block; 8031, slide groove two; 8032, slider two; 8033, tooth plate; 8034, splint; 8035, pulley; 8041, gear; 8042, reset spring two; 8043, drive plate; 8044, drive rod; 8045, lower pressure plate; 901, electric push rod two; 902, pipe sleeve; 903, exhaust pipe. DETAILED DESCRIPTION

[0026] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that the discussion of these embodiments is to enable those skilled in the art to better understand and implement the subject matter described herein. The functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the present specification. Various examples may omit, replace or add various processes or components as needed. In addition, the features described relative to some examples may also be combined in other examples.

[0027] See also Figure 1 , Figure 2 , Figure 3 and Figure 4A sausage automatic packaging machine comprises a frame 1 and a hood 2 fixedly mounted on the top of the frame 1, a feeding conveyor belt 3 and a packaging conveyor belt 4 which are distributed on the left and right and are used to convey packaging bags 12 are fixedly arranged on the top of the frame 1, a support plate 5 is fixedly mounted between the left and right inner walls of the hood 2, a cylinder 6 is fixedly mounted on the top of the support plate 5, an output end of the cylinder 6 slides through the support plate 5 and is fixedly mounted with a sealing plate 11, and a sealing cover 10 which is covered on the outside of the sealing plate 11 is slidably connected to the outer side of the output end of the cylinder 6, the sealing plate 11 is slidably connected to the inner wall of the sealing cover 10, and a pulling, pressing and leveling mechanism 8, an exhaust mechanism 9 and a heat sealing mechanism are arranged in the sealing cover 10 7; The pulling, pressing and leveling mechanism 8 includes a self-resetting plug-in component 801 located below the sealing plate 11, a trigger component 802 for controlling the self-resetting plug-in component 801, a self-resetting clamping component 803 and a driving component 804 for driving the self-resetting clamping component 803, and two self-resetting plug-in components 801, trigger components 802 and self-resetting clamping components 803 are symmetrically arranged in front and back, and a feed port and a discharge port are respectively opened on the left and right sides of the machine cover 2. A driving motor 13 is fixedly installed on the inner wall of the bottom of the frame 1, and the driving motor 13 drives the feeding conveyor belt 3 and the packaging conveyor belt 4 to transport the packaging bag 12 through a belt transmission.

[0028] See also Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 The pulling, pressing and leveling mechanism 8 also includes a plurality of strong springs 805 fixedly installed at the bottom of the sealing plate 11 and a cover plate 806 fixedly connected to the bottom ends of the plurality of strong springs 805. The self-resetting plug-in assembly 801 includes a slide groove 8011 opened at the bottom of the cover plate 806 and a slider 8012 slidably connected to the slide groove 8011. A moving plate 8013 is fixedly installed at the bottom of the slider 8012. The self-resetting clamping and pulling assembly 803 is arranged on the corresponding moving plate 8013. A plurality of sliding steel balls 8017 are rotatably installed at the bottom of the moving plate 8013.

[0029] See also Figure 5 , Figure 6 and Figure 7 The self-resetting plug-in assembly 801 also includes a mounting plate 8014 fixedly mounted on the bottom of the cover plate 806 and a reset spring 8015 fixedly mounted between the mounting plate 8014 and the corresponding movable plate 8013. A limit rod 8016 is fixedly mounted on one side of the movable plate 8013 close to the mounting plate 8014, which slides through the mounting plate 8014 and is located on the inner side of the reset spring 8015.

[0030] See also Figure 4 , Figure 5 , Figure 6 and Figure 7The trigger assembly 802 includes a wedge rod 8021 fixedly mounted on the bottom of the sealing plate 11 and a wedge block 8022 fixedly mounted on the movable plate 8013 close to the inner wall of the sealing cover 10 and matched with the wedge rod 8021. The wedge rod 8021 is provided with a slot 8023 matched with the wedge block 8022. When the slot 8023 moves to align with the wedge block 8022, the return spring 8015 pushes the movable plate 8013 to drive the wedge block 8022 to insert into the slot 8023.

[0031] See also Figure 4 , Figure 5 , Figure 6 and Figure 7 A fixed pointed corner block 8024 and a movable pointed corner block 8025 are fixedly installed on the side close to the inner wall of the sealing cover 10 facing the movable plate 8013, respectively. The adjacent fixed pointed corner blocks 8024 and movable pointed corner blocks 8025 cooperate with each other and are both located on the left side of the wedge block 8022. The upper and lower ends of the fixed pointed corner block 8024 and the movable pointed corner block 8025 are provided with inclined surfaces.

[0032] See also Figure 4 , Figure 5 , Figure 6 and Figure 7 The pulling, pressing and leveling mechanism 8 also includes two side plates 808 fixedly installed at the bottom of the cover plate 806 and symmetrically arranged front and back, and the side plates 808 are located on the right side of the movable plate 8013. A limiting rod 807 is fixedly installed at the bottom of the sealing plate 11, which slides through the cover plate 806 and is located on the inner side of the corresponding strong spring 805. The self-resetting clamping and pulling assembly 803 includes a clamping plate 8034.

[0033] See also Figure 1-Figure 7When in use, the feeding conveyor belt 3 and the packaging conveyor belt 4 are driven by the driving motor 13 to convey the packaging bag 12 containing sausages to the right until the packaging bag 12 is conveyed to the bottom of the sealing cover 10, and then the cylinder 6 is started, and the output end of the cylinder 6 pushes the sealing plate 11 to move downward, driving the pulling and pressing flattening mechanism 8, the heat sealing mechanism 7 and the exhaust mechanism 9 to move downward. At this time, the sealing cover 10 falls on the top of the sealing plate 11 under the action of gravity and moves with the downward movement of the sealing plate 11 until the sealing cover 10 and the side plate 808 fall on the top of the packaging conveyor belt 4 and cover the packaging bag 12. Then, as the sealing plate 11 continues to move downward, it will not drive the sealing cover 10 and the side plate 808 to move downward, but will continue to push the cover plate 806 to move downward and compress the strong spring 805, thereby driving the side plate 806 to move downward. 08 and movable plate 8013 move downward. Since the sealing cover 10 no longer moves at this time, the downward movement of the movable plate 8013 will drive the movable sharp-angle block 8025 to move downward synchronously. The lower inclined surface of the movable sharp-angle block 8025 squeezes the upper inclined surface of the fixed sharp-angle block 8024, so that the movable plate 8013 gradually moves toward the side close to the mounting plate 8014 and compresses the reset spring 8015. When the movable sharp-angle block 8025 passes over the fixed sharp-angle block 8024, the reset spring 8015 gradually resets and drives the movable plate 8013 to reset. Then the sealing plate 11 continues to drive the cover plate 806 to move downward until the sliding steel balls 8017 on the bottom surfaces of the side plate 808 and the bottom of the movable plate 8013 are in contact with the packaging conveyor belt 4, and then the vacuum mechanism 9 is inserted into the packaging bag 12 to wait for vacuuming.

[0034] When the bottom surface of the side plate 808 and the sliding steel ball 8017 at the bottom of the movable plate 8013 are in contact with the packaging conveyor belt 4, the sealing plate 11 continues to move downward, which will drive the inclined surface of the wedge rod 8021 to squeeze the inclined surface of the wedge block 8022, driving the movable plate 8013 to gradually move toward the side close to the mounting plate 8014 and compress the return spring 8015, thereby driving the clamping plate 8034 to approach the packaging bag 12, so that the lower clamping plate 8034 moves to the bottom of the bag opening of the packaging bag 12, and the upper clamping plate 8034 moves to the top of the bag opening of the packaging bag 12, thereby simulating the staff inserting their hands into the upper and lower parts of the bag opening of the packaging bag 12 Operation on both sides, when the inclined surface of the wedge rod 8021 disengages from the inclined surface of the wedge block 8022, the wedge rod 8021 continues to move downward, and the wedge block 8022 will contact the side of the wedge rod 8021 close to the movable plate 8013 and move with the sealing plate 11, and the self-resetting clamping assembly 803 is driven by the driving assembly 804 to clamp the bag opening of the packaging bag 12 and pull it flat on both sides. At this time, the wedge block 8022 is inserted into the slot 8023, and then the vacuum operation is performed through the vacuum mechanism 9. After vacuuming, the vacuum mechanism 9 is controlled to be pulled out of the packaging bag 12, and then the heat sealing mechanism 7 is controlled to heat seal the bag opening.

[0035] After the sealing is completed, the output end of the control cylinder 6 contracts, driving the sealing plate 11 to move upward. As the sealing plate 11 moves upward, the self-resetting clamping assembly 803 is reset first, and then the sealing plate 11 continues to move through the cover plate 806 to drive the side plate 808 and the moving plate 8013 to separate from the packaging conveyor belt 4. Then, the continued movement will drive the upper inclined surface of the moving sharp corner block 8025 to squeeze the lower inclined surface of the fixed sharp corner block 8024, thereby driving the moving plate 8013 to gradually move closer to the mounting plate 8014 and compress the reset spring 1 8015. When the moving sharp corner block 80 When 25 passes over the fixed pointed block 8024, the wedge block 8022 is disengaged from the slot 8023, and the strong spring 805 starts to reset, pushing the cover plate 806 to drive the wedge block 8022, the movable plate 8013 and the side plate 808 to move downward and reset until the strong spring 805 is fully extended and reset. At the same time, when the wedge block 8022 is reset, the pressure received by the reset spring 8015 disappears and gradually resets, driving the movable plate 8013 to reset, and then the sealing plate 11 continues to drive the cover plate 806 to move upward, which will drive the sealing cover 10 to separate from the packaging conveyor belt 4 for reset.

[0036] See also Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 The self-resetting clamping assembly 803 also includes two slide grooves 8031 ​​arranged left and right, which are opened on the side of the moving plate 8013 away from the corresponding wedge block 8022, and a slider 8032 slidably connected in the slide groove 8031. There is a height difference between the two slide grooves 8031 ​​arranged left and right. A tooth plate 8033 is fixedly installed on the side of the slider 8032 away from the corresponding moving plate 8013. A clamping plate 8034 is fixedly installed on the side of the tooth plate 8033 away from the slider 8032. The teeth of the two tooth plates 8033 are close to each other. A pulley 8035 is rotatably installed on the side of the two clamping plates 8034 that are close to each other. A support spring (not shown in the figure) is fixedly installed between the bottom inner wall of the right slide groove 8031 ​​and the bottom of the right tooth plate 8033, and the support spring is used to push up and support the tooth plate 8033.

[0037] See also Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8The driving assembly 804 includes a gear 8041 rotatably mounted on a side of the moving plate 8013 away from the corresponding wedge block 8022 and meshing with two tooth plates 8033, and two return springs 8042 fixedly mounted on the top of the cover plate 806, a driving plate 8043 is commonly mounted on the top of the two return springs 8042, two front-to-back symmetrical driving rods 8044 are fixedly mounted on the bottom of the driving plate 8043, lower pressure plates 8045 are fixedly mounted on the adjacent sides of the two tooth plates 8033 on the right side, and the bottom ends of the front and rear driving rods 8044 both slide through the cover plate 806 and cooperate with the corresponding lower pressure plates 8045.

[0038] When in use, when the inclined surface of the wedge rod 8021 disengages from the inclined surface of the wedge block 8022, the driving rod 8044 contacts the lower pressure plate 8045, and the wedge rod 8021 continues to move downward, and the wedge block 8022 contacts the side of the wedge rod 8021 close to the movable plate 8013 and moves with the sealing plate 11, and the sealing plate 11 drives the driving rod 8044 to press the lower pressure plate 8045 downward, driving the right tooth plate 8033 to move downward and compress the supporting spring, and at the same time drives the left tooth plate 8033 to move upward through the gear 8041, thereby driving the two clamping plates 8034 on the same movable plate 8013 to approach each other and make the pulley 8035 clamp the bag opening of the packaging bag 12, thereby simulating the staff clamping the bag opening with their fingers. Operation, at the same time, the wedge block 8022 is aligned with the slot 8023, and the reset spring 8015 is reset, driving the movable plate 8013 to move to the left and reset, so that the wedge block 8022 is inserted into the slot 8023, thereby driving the clamping plate 8034 clamping the bag opening of the packaging bag 12 to move away from the packaging bag 12, so that the clamping plates 8034 on the front and rear sides are away from each other and pull the packaging bag 12 to both sides, thereby achieving the pulling and leveling of the packaging bag 12, and then simulating the operation of the staff pressing the bag opening to pull it to both sides to level it, completing the leveling operation of the bag opening of the packaging bag 12, and then, performing a vacuum operation through the vacuum mechanism 9. After vacuuming, the vacuum mechanism 9 is controlled to be pulled out of the packaging bag 12, and then the heat sealing mechanism 7 is controlled to heat seal the bag opening.

[0039] After the sealing is completed, the output end of the control cylinder 6 contracts, driving the sealing plate 11 to move upward. As the sealing plate 11 moves upward, the sealing plate 11 will first be separated from the driving plate 8043, and the reset spring 8042 will drive the driving plate 8043 to reset, thereby resetting the driving rod 8044, releasing the pressure on the lower pressure plate 8045, and the pressure on the supporting spring is released, thereby pushing up the right tooth plate 8033 and driving the left tooth plate 8033 to move downward through the gear 8041 for reset.

[0040] See also Figure 2 , Figure 3 , Figure 5 , Figure 6 and Figure 8 The vacuum mechanism 9 includes an electric push rod 901 fixedly installed on the left inner wall of the sealing cover 10 and a pipe sleeve 902 fixedly installed on the output end of the electric push rod 901. An air suction pipe 903 is fixedly installed at the lower end of the pipe sleeve 902. The left end of the air suction pipe 903 is fixedly passed through the sealing cover 10 and is connected to an external vacuum pump. The right end of the air suction pipe 903 is installed with a plate-shaped suction head connected thereto.

[0041] When in use, when the bottom surface of the side plate 808 and the sliding steel ball 8017 at the bottom of the moving plate 8013 are in contact with the packaging conveyor belt 4, the electric push rod 901 is started, and the output end of the electric push rod 901 pushes the pipe sleeve 902, driving the vacuum pipe 903 to be inserted from the bag opening of the packaging bag 12 into the packaging bag 12 to wait for the vacuum operation. After the bag opening of the packaging bag 12 is pulled and leveled, the air inside the packaging bag 12 is extracted through the vacuum pipe 903 connected to the external vacuum pump and inserted into the packaging bag 12 to perform the vacuum operation. After the vacuum operation is completed, the output end of the electric push rod 901 is controlled to contract, driving the vacuum pipe 903 to be pulled out of the packaging bag 12.

[0042] See also Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 8 The heat sealing mechanism 7 includes an electric push rod 701 fixedly installed at the bottom of the cover plate 806 and a hot pressing head 702 fixedly installed at the output end of the electric push rod 701. The hot pressing head 702 is located between the front and rear symmetrical clamping plates 8034. After the vacuuming is completed, the electric push rod 701 drives the hot pressing head 702 to move downward to heat-seal the mouth of the packaging bag 12.

[0043] When in use, the end of the air extraction pipe 903 is located inside the bag opening of the packaging bag 12, but its end will not affect the downward movement of the hot pressing head 702 to press the packaging bag 12. Before the air extraction pipe 903 is pulled out, the electric push rod 1 701 is started, and the output end of the electric push rod 1 701 pushes the hot pressing head 702 to move downward to press the packaging bag 12 against the top of the packaging conveyor belt 4. After the hot pressing head 702 presses the packaging bag 12, the air extraction pipe 903 is withdrawn, and then the hot pressing head 702 is started to perform heat sealing operation on the packaging bag 12. After the heat sealing is completed, the output end of the electric push rod 1 701 is controlled to shrink, driving the hot pressing head 702 to separate from the packaging bag 12 to complete the heat sealing operation.

[0044] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. An automatic sausage packaging machine, characterized in that: include: A frame (1) and a hood (2) fixedly mounted on the top of the frame (1); a feeding conveyor belt (3) and a packaging conveyor belt (4) distributed on the left and right and used to convey packaging bags (12) are arranged on the top of the frame (1); a support plate (5) is fixedly mounted between the left and right inner walls of the hood (2); a cylinder (6) is fixedly mounted on the top of the support plate (5); an output end of the cylinder (6) slides through the support plate (5) and is fixedly mounted with a sealing plate (11); and a sealing cover (11) covering the outside of the sealing plate (11) is slidably connected to the outer side of the output end of the cylinder (6). 10), the sealing plate (11) is slidably connected to the inner wall of the sealing cover (10), and the sealing cover (10) is provided with a pulling, pressing and flattening mechanism (8), an air extraction mechanism (9) and a heat sealing mechanism (7), the pulling, pressing and flattening mechanism (8) comprising a self-resetting plug-in assembly (801), a trigger assembly (802), a self-resetting clamping assembly (803) and a driving assembly (804) located below the sealing plate (11), and two of the self-resetting plug-in assembly (801), the trigger assembly (802) and the self-resetting clamping assembly (803) are symmetrically arranged front and back; The pulling, pressing and leveling mechanism (8) further comprises a cover plate (806); the self-resetting plug-in assembly (801) comprises a slide groove (8011) provided at the bottom of the cover plate (806) and a slider (8012) slidably connected to the slide groove (8011); a movable plate (8013) is fixedly mounted at the bottom of the slider (8012); and the self-resetting clamping and pulling assembly (803) is arranged on the corresponding movable plate (8013); The trigger component (802) cooperates with the drive component (804) to control the movable plate (8013) to drive the self-resetting clamping component (803) to first fit the packaging bag (12), and then drive the self-resetting clamping component (803) to clamp the bag opening and pull it toward both sides to make it flat.

2. The automatic sausage packaging machine according to claim 1, characterized in that: The self-resetting plug-in assembly (801) further comprises a mounting plate (8014) fixedly mounted on the bottom of the cover plate (806) and a first reset spring (8015) fixedly mounted between the mounting plate (8014) and the corresponding movable plate (8013); a second limit rod (8016) slidingly penetrating the mounting plate (8014) and located inside the first reset spring (8015) is fixedly mounted on one side of the movable plate (8013) close to the mounting plate (8014); and a plurality of sliding steel balls (8017) are rotatably mounted on the bottom of the movable plate (8013).

3. The automatic sausage packaging machine according to claim 2, characterized in that: The trigger assembly (802) comprises a wedge-shaped rod (8021) fixedly mounted on the bottom of the sealing plate (11) and a wedge-shaped block (8022) fixedly mounted on the side of the movable plate (8013) close to the inner wall of the sealing cover (10) and cooperating with the wedge-shaped rod (8021). The wedge-shaped rod (8021) is provided with a slot (8023) cooperating with the wedge-shaped block (8022). When the slot (8023) moves to align with the wedge-shaped block (8022), a return spring 1 (8015) pushes the movable plate (8013) to drive the wedge-shaped block (8022) to be inserted into the slot (8023).

4. The automatic sausage packaging machine according to claim 3, characterized in that: A fixed pointed corner block (8024) and a movable pointed corner block (8025) are respectively fixedly mounted on the side of the movable plate (8013) and the inner wall of the sealing cover (10) facing the movable plate (8013), and adjacent fixed pointed corner blocks (8024) and movable pointed corner blocks (8025) cooperate with each other and are both located on the left side of the wedge block (8022).

5. The automatic sausage packaging machine according to claim 3, characterized in that: The self-resetting clamping assembly (803) comprises two slide grooves (8013) arranged on the side of the movable plate (8013) away from the corresponding wedge block (8022) and arranged on the left and right sides, and a slider (8013) slidably connected to the slide grooves (8013). There is a height difference between the two slide grooves (8013) arranged on the left and right sides. A tooth plate (8033) is fixedly installed on the side of the slider (8032) away from the corresponding movable plate (8013). A clamping plate (8034) is fixedly installed on the side of the tooth plate (8033) away from the slider (8013). The teeth of the two tooth plates (8033) are close to each other, and pulleys (8035) are rotatably installed on the sides of the two clamping plates (8034) that are close to each other.

6. The automatic sausage packaging machine according to claim 5, characterized in that: The driving assembly (804) comprises a gear (8041) rotatably mounted on a side of the moving plate (8013) away from the wedge block (8022) and meshing with two tooth plates (8033), and two return springs (8042) fixedly mounted on the top of the cover plate (806); a driving plate (8043) is commonly mounted on the tops of the two return springs (8042); two front-to-rear symmetrical driving rods (8044) are fixedly mounted on the bottom of the driving plate (8043); lower pressure plates (8045) are fixedly mounted on the adjacent sides of the two tooth plates (8033) on the right; the bottom ends of the front and rear driving rods (8044) slide through the cover plate (806) and cooperate with the corresponding lower pressure plates (8045).

7. The automatic sausage packaging machine according to claim 5, characterized in that: The heat sealing mechanism (7) comprises an electric push rod (701) fixedly mounted on the bottom of the cover plate (806) and a heat pressing head (702) fixedly mounted on the output end of the electric push rod (701); the heat pressing head (702) is located between front and rear symmetrical clamping plates (8034); after vacuuming is completed, the electric push rod (701) drives the heat pressing head (702) to heat-seal the mouth of the packaging bag (12).

8. The automatic sausage packaging machine according to claim 1, characterized in that: The air extraction mechanism (9) comprises an electric push rod 2 (901) fixedly mounted on the left inner wall of the sealing cover (10) and a pipe sleeve (902) fixedly mounted on the output end of the electric push rod 2 (901); an air extraction pipe (903) is fixedly mounted on the lower end of the pipe sleeve (902); and a plate-shaped suction head connected to the air extraction pipe (903) is mounted on the right end of the air extraction pipe (903).

9. The automatic sausage packaging machine according to claim 1, characterized in that: The pulling, pressing and leveling mechanism (8) further comprises a plurality of strong springs (805) fixedly mounted on the bottom of the sealing plate (11); a cover plate (806) fixedly mounted between the bottom ends of the plurality of strong springs (805); two side plates (808) symmetrically mounted front and rearwardly mounted on the bottom of the cover plate (806); and the side plates (808) are located on the right side of the movable plate (8013); and a plurality of limit rods (807) are fixedly mounted on the bottom of the sealing plate (11) and are slidably penetrate the cover plate (806) and are located on the inner side of the corresponding strong springs (805).

10. The automatic sausage packaging machine according to claim 1, characterized in that: A driving motor (13) is fixedly mounted on the inner wall at the bottom of the frame (1), and the driving motor (13) drives the feeding conveyor belt (3) and the packaging conveyor belt (4) to transport the packaging bags (12) by means of belt transmission.

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