A cutter device and a food bag sealer

Abstract

The application relates to the technical field of sealing machines, and discloses a cutter device and a food bag sealing machine. The cutter device comprises a cutter and first housings arranged at two ends of the cutter, the first housings are used for cooperating with an upper cover of the food bag sealing machine; first mounting cavities are arranged at the first housings, mounting units are arranged in the first mounting cavities, and the mounting units are used for driving the end part of the cutter to extend out of and retract into a knife groove at the upper cover of the food bag sealing machine; the cutter device further comprises a lock catch mechanism used for locking the upper cover and a lower cover when the cutter extends out of the lower end surface of the upper cover of the sealing machine. Through the above arrangement, the cutter can preferably extend out of the knife groove to cut the food bag after the upper cover and the lower cover are locked, so that the use risk of the staff is reduced. The food bag sealing machine comprises the cutter device.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sealing machine, in particular, to a cutter device and a food bag sealing machine. BACKGROUND

[0002] The food bag sealing machine is a machine for sealing food bags to keep the food in the food bags, which usually includes large food bag sealing machines and small food bag sealing machines; since the small food bag sealing machines are convenient to move and carry, they are mostly used in families, workshops and other places.

[0003] In the process of sealing food bags, cutting, end sealing and vacuumizing of food bags are involved; since the current small food bag sealing machines can only realize the sealing and vacuumizing processes of food bags, they need to cut food bags separately before the sealing and vacuumizing processes, which causes inconvenience such as low sealing efficiency and increased cost, so it is necessary to modify them to realize the cutting, end sealing and vacuumizing processes of food bags at the same time.

[0004] When modifying the current small food bag sealing machines, since food bags are usually wound around the reel, it is usually necessary to add a clamp structure for fixing the reel, a cutter device for cutting food bags, a pressing mechanism for fixing the end of food bags and other structures.

[0005] When using the small food bag sealing machine, in order to increase the safety of the cutter, the food bag needs to be cut after the upper cover and the lower cover of the sealing machine are locked. Since the existing cutter device with telescopic function is directly added to the sealing machine, the cutter of the cutter device can extend out of the slot when the upper cover is opened, so that the safety of the cutter device used by the workers to cut the food bag is low. SUMMARY

[0006] The present application provides a cutter device which can overcome some or some defects of the prior art.

[0007] According to the cutter device of the present application, it comprises a cutter and a first housing provided at both ends of the cutter, the first housing is used to cooperate with the upper cover of the food bag sealing machine; a first installation cavity is provided at the first housing, and an installation unit is provided in the first installation cavity, the installation unit is used to drive the end of the cutter to extend out of and retract into the slot at the lower end surface of the upper cover of the food bag sealing machine; the cutter device further comprises a lock mechanism for locking the upper cover and the lower cover when the cutter extends out of the lower end surface of the upper cover of the sealing machine.

[0008] Through the above, the cutter device facilitates the cutting process of the food bag sealing machine, thus facilitating the sealing process of the food bag and the use of the food bag sealing machine.

[0009] Wherein, since the cutter can only be extended out of the cutter slot after the upper cover and the lower cover are locked, the risk of the operator is preferably reduced.

[0010] As preferred, the second housing is further included for cooperating with the lower cover of the food bag sealing machine; the lifting unit is arranged at the second housing;

[0011] The first installation cavity includes a first sub-cavity, and the installation unit includes a first rotating ring arranged at the first sub-cavity, a first helical slope and a second helical slope arranged in a split manner at the lower end surface of the first rotating ring; the installation unit further includes a first matching block and a second matching block for slidingly cooperating with the first helical slope and the second helical slope, respectively;

[0012] The first installation cavity includes a first opening slot arranged at the lower end of the first sub-cavity and along the axis of the first rotating ring, and a second sub-cavity; the first opening slot penetrates the lower end surface of the first housing, and the second sub-cavity is communicated with the cutter slot; a first sliding rod is fixedly arranged at the lower end surface of the first matching block for slidingly cooperating with the first opening slot, and a second sliding rod is fixedly arranged at the lower end surface of the second matching block and extends into the second sub-cavity; the cutter is fixedly cooperated with the second sliding rod;

[0013] The first sliding rod is used for moving upward under the action of the lifting unit and driving the first rotating ring to rotate along its axis, and the second sliding rod is used for driving the cutter to extend out of the cutter slot under the action of the rotation of the first rotating ring.

[0014] Through the arrangement of the installation unit, the end of the cutter can preferably extend out of the cutter slot and retract into the cutter slot, so that the cutter can preferably cut the food bag, and after cutting, the cutter can retract into the cutter slot, so that the risk of the operator when using the cutter to cut the food bag can be preferably reduced.

[0015] As preferred, the cutter device further includes a torsion spring fixed at the first rotating ring and the side wall of the first sub-cavity, respectively, and the torsion spring is used for driving the first rotating ring to reversely rotate after the lifting unit is separated from the first sliding rod;

[0016] The installation unit further includes a circular cylinder fixedly arranged at the lower end surface of the second sub-cavity, a first sliding groove arranged at the circular cylinder for slidingly cooperating with the lower end of the second sliding rod, and a first compression spring arranged in the circular cylinder for driving the upper end of the second matching block to be tightly pressed at the second helical slope; the first compression spring is used for driving the second matching block to move upward to drive the cutter to retract into the cutter slot when the first rotating ring reversely rotates.

[0017] In the present application, the torsion spring is arranged to drive the cutter to retract into the cutter slot.

[0018] As preferred, the first rotating ring is provided with a first connecting plate at the inner circumferential wall, the first connecting plate is provided with a first mounting column and a second mounting column at the upper end surface and the lower end surface respectively, the first mounting cavity further comprises a third sub-cavity and a fourth sub-cavity provided at the upper end and the lower end of the first sub-cavity respectively, the third sub-cavity and the fourth sub-cavity are in rotational cooperation with the first mounting column and the second mounting column respectively; the third sub-cavity and the fourth sub-cavity are used to cooperate with the first mounting column and the second mounting column respectively to limit the axial movement of the first rotating ring; the torsional spring is sleeved on the first mounting column.

[0019] Through the above, the installation of the first rotating ring and the torsional spring, and the axial limiting of the first rotating ring can be better achieved, so that the stability of the first rotating ring during rotation can be better improved.

[0020] As preferred, the fourth sub-cavity is provided with a first fan-shaped limiting groove at the inner side wall, the second mounting column is provided with a first limiting block for rotational cooperation with the first fan-shaped limiting groove, and the first fan-shaped limiting groove and the first limiting block are in cooperation for limiting the rotation angle of the first rotating ring. Therefore, the rotation angle of the first rotating ring can be limited.

[0021] As preferred, the second shell is provided with a second mounting cavity, and the lifting unit comprises a first lifting rod, and the first lifting rod is provided with a first shifting rod at the lower end;

[0022] The second mounting cavity comprises a jacking groove open at the upper end, a second inner cavity provided at the lower end of the jacking groove, and a second opening groove provided at the outer side wall of the lower cover and communicating with the second inner cavity; the jacking groove is used for sliding cooperation with the first lifting rod, the end of the first shifting rod away from the first lifting rod extends out of the outer side wall of the lower cover from the second opening groove, a second compression spring is sleeved on the first lifting rod, and the second compression spring is located at the upper end of the first shifting rod and is arranged in the second inner cavity;

[0023] The first shifting rod is used to drive the first sliding rod to move upward through the first lifting rod under the action of an external force, and the end is used to extend into the first opening groove after the first sliding rod moves upward to press the first sliding rod to move upward, and the first lifting rod is used to move downward to separate from the first sliding rod under the action of the second compression spring.

[0024] Through the setting of the lifting unit, the upper end of the first lifting rod can extend into the first opening groove to drive the first rotating ring to rotate after the upper cover and the lower cover are closed, and the end of the cutter extends out of the cutter groove, so that the end of the cutter extending out of the cutter groove can be better avoided to cause damage to the workers when the upper cover and the lower cover are opened, and the safety of the sealing machine body is better improved.

[0025] As preferred, the locking mechanism comprises a lock tongue provided at the lower end surface of the first shell and a lock piece unit provided in the second mounting cavity;

[0026] The second installation cavity further comprises a third opening groove and a third inner cavity arranged in an up-down manner, the third opening groove is used for plug-in cooperation with the lock tongue;

[0027] The lock unit comprises two first locking parts arranged in a split manner in the third inner cavity, an inner end of the first locking part is recessed to form a first locking groove, and the lock tongue is expanded outward to form a lock block at both ends of the side wall;

[0028] Through the arrangement of the locking mechanism, the lock block at the lock tongue and the first locking groove at the first locking part are locked with each other under the action of the third compression spring, which can better lock the upper cover and the lower cover, thereby facilitating the transportation and movement of the sealing machine body. And the safety of the upper cover during the cutting, vacuumizing and sealing processes of the food bag.

[0029] As a preferred, the second installation cavity further comprises a fourth inner cavity and a fifth inner cavity arranged in an up-down manner, and a fourth opening groove arranged at the side wall of the second shell and communicating with the fifth inner cavity;

[0030] The lock unit further comprises a second lifting rod arranged along the height direction of the sealing machine body and crossing the fourth inner cavity, the second lifting rod is used for sliding cooperation with the fourth inner cavity, an end of the second lifting rod away from the second lifting rod extends out of the side wall of the lower cover from the fourth opening groove, an eighth compression spring is arranged on the second lifting rod, and the eighth compression spring is arranged at the upper end of the second lifting rod and in the second inner cavity;

[0031] The second lifting rod is used for driving the second lifting member to move upward through the second lifting rod under the action of an external force to release the locking state of the lock block and the first locking groove.

[0032] Through the above, the lock block at the lock tongue and the first locking groove at the first locking part are released from the locking state under the action of the second lifting member, thereby the locking state between the upper cover and the lower cover can be better released, and the opening of the upper cover is facilitated.

[0033] As a preferred, the first lifting rod is located at the left side of the second lifting rod, a third sliding rod in an L shape is arranged at the first lifting rod, and a fourth sliding rod in an L shape is arranged at the second lifting rod;

[0034] The cutter device further comprises an interlocking unit arranged at the second installation cavity; the second installation cavity comprises a sixth inner cavity arranged along the width direction of the sealing machine body, the interlocking unit comprises an interlocking member arranged at the sixth inner cavity, the interlocking member is arranged below the first lifting rod and the second lifting rod, and a seventh compression spring is arranged between the right side wall of the interlocking member and the inner wall of the sixth inner cavity;

[0035] The first interlocking groove and the second interlocking groove are arranged at the lower end of the interlocking unit; the upper end of the right side wall of the first interlocking groove is recessed to the right to form a second locking groove, and the lower end of the right side wall of the first interlocking groove is inclined downward from top to bottom to form a third guide slope to the right; the right side wall of the second interlocking groove is a fourth guide slope inclined downward from top to bottom to the right;

[0036] The first shifting rod is used to move upward by driving the third sliding rod to press the third guide slope, so as to move to the second locking groove; the interlocking unit is used to move left under the action of the seventh compression spring, so as to realize the locked state of the first shifting rod and the second locking groove; the first shifting rod and the second locking groove are locked to limit the position of the first lifting rod in the height direction;

[0037] The second shifting rod is used to move upward by driving the fourth sliding rod to press the fourth guide slope, so as to move right of the interlocking unit; the first shifting rod moves downward by the second compression spring when the interlocking unit moves right.

[0038] The interlocking unit is arranged, so that the worker needs to drive the first lifting rod to move upward to the upper end surface extending into the lifting groove, and then drive the first lifting rod end surface to extend into the first opening groove by covering the upper cover, so as to drive the cutter end to extend out of the cutter groove to cut the food bag; therefore, the safety of the worker when cutting the food bag by the cutter is improved.

[0039] Since the interlocking unit can keep the position of the first lifting rod when the upper end surface extends out of the lifting groove, the worker can use the sealing machine body more conveniently. Since the worker will drive the first lifting rod upper end surface to retract into the lifting groove when the upper cover and the lower cover are unlocked, the cutter end will retract into the cutter groove before the upper cover is opened, so that the safety of the worker when cutting the food bag by the cutter is improved. Since the worker will drive the cutter to retract into the cutter groove when the upper cover and the lower cover are unlocked, the worker can preferably avoid forgetting to drive the first lifting rod to retract into the lifting groove, thereby causing the cutter to damage the food bag during the process of vacuumizing and sealing the food bag without cutting the food bag.

[0040] The locking function of the upper cover and the lower cover can be used independently; that is, when the worker does not drive the first lifting rod to move upward before covering the upper cover, the worker will not affect the first lifting rod when driving the second lifting rod to move upward to unlock the upper cover and the lower cover before opening the upper cover. Therefore, the cutter end can preferably avoid interfering with the food bag during the vacuumizing and sealing process.

[0041] The application also provides a food bag sealing machine, which comprises a cutter device. BRIEF DESCRIPTION OF DRAWINGS

[0042] Figure 1 It is a structural schematic diagram of a food bag sealing machine in Example 1.

[0043] Figure 2 This is an exploded schematic diagram of a food bag sealing machine in Example 1.

[0044] Figure 3 This is a schematic diagram of the structure of the upper cover in Example 1.

[0045] Figure 4 This is a schematic diagram of the installation unit in Example 1.

[0046] Figure 5 for Figure 4 An exploded diagram of the structure is shown in the image.

[0047] Figure 6 This is an exploded view of the lifting unit, locking mechanism and interlocking unit in Example 1.

[0048] Figure 7 This is an exploded view of the lifting unit, locking mechanism and interlocking unit in Example 1.

[0049] Figure 8 This is an exploded view of the lifting unit, locking mechanism and interlocking unit in Example 1.

[0050] Figure 9 This is an exploded view of the lifting unit, locking mechanism and interlocking unit in Example 1.

[0051] Figure 10 This is a schematic diagram of the interlocking component in Example 1.

[0052] Figure 11 This is a schematic diagram of the storage device in Example 1.

[0053] Figure 12 This is a schematic diagram of the clamping mechanism in Example 1.

[0054] Figure 13 This is a cross-sectional schematic diagram of the clamping mechanism in Example 1.

[0055] Figure 14 This is a schematic diagram of the clamping mechanism in Example 1.

[0056] Figure 15 for Figure 14 An enlarged schematic diagram of structure A in the middle.

[0057] Figure 16 This is a schematic diagram of the clamping mechanism in Example 1.

[0058] Figure 17 for Figure 16 An enlarged schematic diagram of the B-structure.

[0059] Figure 18An exploded schematic view of the pressing mechanism in Example 1.

[0060] Figure 19 An enlarged schematic view of the structure C. Figure 18

[0061] Figure 20 A schematic view of the structure of the lower cover and the sealing structure in Example 1.

[0062] Figure 21 A schematic view of the structure of the lower vacuum part in Example 1.

[0063] Figure 22 An enlarged schematic view of the structure D. Figure 21 DETAILED DESCRIPTION

[0064] In order to further understand the content of the present application, the present application will be described in detail in conjunction with the embodiments. It should be understood that the embodiments are only used to explain the present application but not to limit the present application.

[0065] Example 1

[0066] In the present embodiment, "up" and "down", "left" and "right", "front" and "back" are the positions when the upper cover 110 is in the closed state of the sealing machine body 100; wherein the upper cover 110 is in the closed state of the upper cover 110 and the lower cover 120; wherein the two directions of the sealing machine body 100 in the height direction are "up" and "down", the two directions of the sealing machine body 100 in the width direction are "front" and "back", and the two directions of the sealing machine body 100 in the length direction are "left" and "right".

[0067] In the present embodiment, the forward direction is the rotation direction of the food bag pulling the reel 210 towards the sealing device, and the reverse direction is the reverse direction of the forward direction.

[0068] As shown in Figures 1-22 The present embodiment provides a food bag sealing machine, which comprises a sealing machine body 100, the sealing machine body 100 comprising an upper cover 110 and a lower cover 120 hingedly connected to each other, and a storage device, a vacuum device, a cutter device, a lock mechanism and a sealing device arranged in sequence from front to back along the width direction of the sealing machine body 100 at the inner end surfaces of the upper cover 110 and the lower cover 120;

[0069] ​​The storage device comprises a reel 210 for storing the food bag, a clamp mechanism arranged at both ends of the reel 210 for adjusting the forward rotation and reverse rotation of the reel 210 to control the stretching and rotation length of the food bag, and a pressing mechanism for cooperating with the food bag to limit the stretching and rotation length of the food bag; the pressing mechanism is arranged between the reel 210 and the cutter device; a vacuumizing device is arranged for vacuumizing the food bag; a sealing device is arranged for sealing the food bag; and the cutter device is arranged for cutting the food bag, and further comprises a locking mechanism unit for locking the upper cover 110 and the lower cover 120 when cutting the food bag.

[0070] The inner end surface of the upper cover 110 and the lower cover 120 is the end surface of the upper cover 110 and the lower cover 120 facing each other.

[0071] Through the above, the equal length cutting of the food bag at the reel 210, the end sealing of the food bag after being separated from the reel 210 after cutting, the automatic equal length rotation of the food bag at the reel 210 after cutting, the vacuumizing and end sealing of the food bag after being filled with food, and the locking of the upper cover 110 and the lower cover 120 can be preferably achieved.

[0072] The sealing machine body 100 can preferably improve the neatness of the food bag after being filled with food and facilitate the use of the staff. The sealing machine body 100 can preferably improve the freshness and storage time of the food after being packaged in the food bag. The locking mechanism can preferably facilitate the movement of the sealing machine body 100 and preferably reduce the risk to the staff during the cutting, vacuumizing and sealing of the food bag. Since the food bag does not move after being stretched to a certain length, the pressing mechanism and the sealing device can position the two ends of the food bag to tighten the food bag, thereby facilitating the cutting of the food bag by the cutter device. Since there is a distance between the reel 210 and the cutter device, the food bag between the reel 210 and the cutter device after being cut by the cutter device can affect the subsequent vacuumizing and sealing process of the food bag. The sealing machine body 100 of the embodiment can automatically rotate the food bag at the reel 210 after cutting to the reel 210, thereby preferably facilitating the normal use of the subsequent vacuumizing and sealing process of the food bag; and the sealing machine body 100 of the embodiment can make the rotation length of the food bag equal, thereby preferably reducing the probability of the staff having difficulty in finding the end of the food bag at the reel 210 due to the excessive rotation length of the food bag, and the probability of affecting the subsequent vacuumizing and sealing process of the food bag due to the insufficient rotation length of the food bag.

[0073] Specifically, the food bag is wound on the reel 210, and the sealing machine body 100 has the following steps when in use:

[0074] Step one, the staff opens the upper cover 110, and the food bag is stretched to a certain length, and then the food bag stops stretching under the action of the pressing mechanism;

[0075] Step two, the staff cuts off the food bag through the cutter device, and seals the end of the food bag through the sealing device;

[0076] Step three, after the food bag is cut off, the food bag is rotated to the reel 210 under the action of the clamp mechanism, and then the food bag stops rotating under the action of the pressing mechanism after rotating to a certain length;

[0077] Step four, after the staff removes the food bag and packs the food, the staff stretches the opening side of the food bag into the vacuum device, and then seals the end of the food bag through the sealing device after closing the upper cover 110.

[0078] In combination Figure 2 As shown in the drawings, in the embodiment, the lower end surface of the upper cover 110 is provided with a knife groove 310 arranged along the length direction of the sealing machine body 100, the cutter device includes a first housing 261 arranged at both ends of the knife groove 310, the lower end surface of the upper cover 110 is provided with a first housing mounting groove 350 for mounting the first housing 261, and the first housing 261 is provided with a first mounting cavity 410; the cutter device includes a cutter 220 arranged in the knife groove 310 and a mounting unit arranged in the first mounting cavity 410 for driving the end of the cutter 220 to extend out of and retract into the knife groove 310;

[0079] The first mounting cavity 410 includes a first sub-cavity 411, and the mounting unit includes a first rotating ring 421 arranged at the first sub-cavity 411, the axial direction of the first rotating ring 421 is parallel to the height direction of the sealing machine body 100, and the lower end surface of the first rotating ring 421 is provided with a first spiral inclined surface 511 and a second spiral inclined surface 512 arranged in a split type; the mounting unit further includes a first matching block 422 and a second matching block 423 respectively used for slidingly matching with the first spiral inclined surface 511 and the second spiral inclined surface 512;

[0080] The first mounting cavity 410 includes a first opening groove 412 arranged at the lower end of the first sub-cavity 411 and along the axial direction of the first rotating ring 421 and a second sub-cavity 413, the first opening groove 412 penetrates the lower end surface of the first housing 261, and the second sub-cavity 413 communicates with the knife groove 310; the lower end surface of the first matching block 422 is fixedly provided with a first sliding rod 424 used for slidingly matching with the first opening groove 412, and the lower end surface of the second matching block 423 is fixedly provided with a second sliding rod 425 extending into the second sub-cavity 413, and the cutter 220 is fixedly matched with the second sliding rod 425;

[0081] The cutter device comprises a lifting unit arranged at the lower cover 120, a first sliding rod 424 arranged to move upward under the action of the lifting unit and drive the first rotating ring 421 to rotate along its axis, and a second sliding rod 425 arranged to drive the cutter 220 to extend out of the cutter slot 310 under the action of the rotation of the first rotating ring 421.

[0082] Through the arrangement of the mounting unit, the end of the cutter 220 can be driven to extend out of or retract into the cutter slot 310, so that the cutter 220 can cut the food bag preferably, and the cutter 220 can retract into the cutter slot 310 after cutting, so that the risk of the worker when using the cutter 220 to cut the food bag can be reduced preferably.

[0083] In the embodiment, the cutter device further comprises a torsion spring 426 fixed at the first rotating ring 421 and the sidewall of the first sub-cavity 411 respectively, and the torsion spring 426 is arranged to drive the first rotating ring 421 to rotate reversely after the lifting unit is separated from the first sliding rod 424.

[0084] The mounting unit further comprises a circular cylinder 427 fixedly arranged at the lower end surface of the second sub-cavity 413, the circular cylinder 427 is provided with a first sliding groove 521 arranged to slide with the lower end of the second sliding rod 425, and the circular cylinder 427 is sleeved with a first compression spring 428 arranged to drive the upper end of the second matching block 423 to be pressed tightly on the second spiral inclined surface 512; the first compression spring 428 is arranged to drive the second matching block 423 to move upward to drive the cutter 220 to retract into the cutter slot 310 when the first rotating ring 421 rotates reversely.

[0085] Through the arrangement of the torsion spring 426, the cutter 220 can be driven to retract into the cutter slot 310.

[0086] In the embodiment, the inner circumferential wall of the first rotating ring 421 is provided with a first connecting plate 431, the upper end surface and the lower end surface of the first connecting plate 431 are respectively provided with a first mounting column 432 and a second mounting column 433, and the first mounting cavity 410 further comprises a third sub-cavity 414 and a fourth sub-cavity 415 arranged at the upper end and the lower end of the first sub-cavity 411 respectively, and the third sub-cavity 414 and the fourth sub-cavity 415 are respectively arranged in rotation with the first mounting column 432 and the second mounting column 433; the third sub-cavity 414 and the fourth sub-cavity 415 are respectively arranged to cooperate with the first mounting column 432 and the second mounting column 433 to limit the axial movement of the first rotating ring 421; and the torsion spring 426 is sleeved with the first mounting column 432.

[0087] Through the above, the installation of the first rotating ring 421 and the torsion spring 426 and the axial limiting of the first rotating ring 421 can be achieved preferably, so that the stability of the first rotating ring 421 when rotating can be improved preferably.

[0088] In the embodiment, the first fan-shaped limiting groove 416 is arranged at the inner side wall of the fourth sub-cavity 415, the first limiting block 434 for rotating cooperation with the first fan-shaped limiting groove 416 is arranged at the side wall of the second mounting column 433, and the first fan-shaped limiting groove 416 and the first limiting block 434 are matched with each other to limit the rotation angle of the first rotating ring 421. Therefore, the rotation angle of the first rotating ring 421 can be limited.

[0089] In the embodiment, the second shell mounting groove 2041 is arranged at the upper end surface of the lower cover 120, the cutter device includes the second shell 262 arranged at the second shell mounting groove 2041, the second mounting cavity is arranged at the second shell 262, the lifting unit includes the first lifting rod 610 arranged along the height direction of the sealing machine body 100, the first lifting rod 610 is arranged at the lower end of the first lifting rod 610, and the first lifting rod 610 is arranged at the lower end of the first lifting rod 610.

[0090] The second mounting cavity includes the jacking groove 621 open at the upper end, the second inner cavity 622 arranged at the lower end of the jacking groove 621, and the second opening groove 831 arranged at the outer side wall of the lower cover 120 and communicating with the second inner cavity 622; the jacking groove 621 is used for sliding cooperation with the first lifting rod 610, the end portion of the first lifting rod 810 away from the first lifting rod 610 extends out of the outer side wall of the lower cover 120 from the second opening groove 831, the second compression spring 710 is sleeved at the first lifting rod 610, and the second compression spring 710 is located at the upper end of the first lifting rod 810 and arranged in the second inner cavity 622.

[0091] The first lifting rod 810 is used for driving the first sliding rod 424 to move upward through the first lifting rod 610 under the action of an external force, the end portion of the first sliding rod 424 is used for extending into the first opening groove 412 after the first sliding rod 424 moves upward to extrude the first sliding rod 424 and make it move upward, and the first lifting rod 610 is used for moving downward to be separated from the first sliding rod 424 under the action of the second compression spring 710.

[0092] Through the arrangement of the lifting unit, the upper end portion of the first lifting rod 610 can extend into the first opening groove 412 to drive the first rotating ring 421 to rotate after the upper cover 110 and the lower cover 120 are closed, and then the end portion of the cutter 220 extends out of the knife groove 310, so that the end portion of the cutter 220 extending out of the knife groove 310 in the open state of the upper cover 110 and the lower cover 120 can be preferably avoided to cause damage to the workers, and the safety of the sealing machine body 100 is preferably improved.

[0093] In the embodiment, the first step surface 623 is formed between the jacking groove 621 and the second inner cavity 622, and the first step surface 623 and the first lifting rod 810 are matched with each other to limit the positions of the two end portions of the second compression spring 710. Therefore, the two end portions of the second compression spring 710 can be preferably limited.

[0094] In the embodiment, the locking mechanism includes a lock tongue 540 arranged at the lower end surface of the first housing 261 and a lock unit arranged in the second mounting cavity; the second mounting cavity further includes a third opening slot 633 and a third inner cavity 634 arranged in an up-down manner, and the third opening slot 633 is used for plug-in cooperation with the lock tongue 540;

[0095] The lock unit includes two first locking parts 721 arranged in the third inner cavity 634 and arranged in an opposite opening manner, the inner end surface of the first locking part 721 is inwardly recessed to form a first lock slot 722, and the two end side walls of the lock tongue 540 are outwardly expanded to form lock blocks 541; the lock blocks 541 are used for locking with the first lock slot 722 to limit the lock tongue 540 from being separated from the third opening slot 633; a first guide inclined surface 723 is arranged at the upper end surface of the first locking part 721, and a third compression spring 724 is arranged between the outer end surface of the first locking part 721 and the inner side wall of the third inner cavity 634;

[0096] In the embodiment, the lock blocks 541 are used for moving to the first lock slot 722 by extruding the first guide inclined surface 723, and the third compression spring 724 is used for driving the two first locking parts 721 to move towards each other to realize the locking state of the lock blocks 541 and the first lock slot 722.

[0097] Among them, the inner end surface of the first locking part 721 is the two end surfaces of the two first locking parts 721 facing each other; and the outer end surface of the first locking part 721 is the two end surfaces of the two first locking parts 721 facing away from each other.

[0098] Through the arrangement of the locking mechanism, the lock blocks 541 at the lock tongue 540 and the first lock slot 722 at the first locking part 721 are locked with each other under the action of the third compression spring 724, which can better lock the upper cover 110 and the lower cover 120, thereby better facilitating the transportation and movement of the sealing machine body 100. Since the upper cover 110 is automatically locked after being closed, the use of the staff is facilitated, and the safety of the staff when using the sealing machine body 100 to cut, vacuumize, and seal food bags and the like is improved.

[0099] In the embodiment, the upper side wall and the lower side wall of the third inner cavity 634 are each provided with a second limiting groove 635, and the upper end and the lower end of the first locking part 721 are provided with a second limiting strip 725 respectively used for sliding cooperation with the corresponding second limiting groove 635. Therefore, the movement direction of the first locking part 721 is better guided, and the stability of the first locking part 721 during movement is better improved.

[0100] The third limiting slot 636 is arranged at the inner wall of the third inner cavity 634 at both ends along the sliding direction of the first locking part 721. The third limiting strip 726 is respectively inserted into the corresponding third limiting slot 636 at the outer end surface of the first locking part 721. The third compression spring 724 is sleeved on the third limiting strip 726. Therefore, the installation of the first locking part 721 and the third compression spring 724 is facilitated, the probability of bending of the third compression spring 724 during extension is reduced, and the stability of the first locking part 721 during movement is improved.

[0101] In the embodiment, the second mounting cavity further comprises a fourth inner cavity 631 and a fifth inner cavity 632 arranged in an up-down manner, and a fourth opening slot 832 arranged at the side wall of the second shell 262 and communicating with the fifth inner cavity 632.

[0102] The locking piece unit further comprises a second lifting rod 731 arranged along the height direction of the sealing machine body 100 and transversely penetrating the fourth inner cavity 631. The end of the second lifting rod 731 extending into the third inner cavity 634 is provided with a second lifting piece 732. The lower end surface of the first locking part 721 is provided with a second guide inclined surface 727. The lower end of the second lifting rod 731 extending into the fifth inner cavity 632 is provided with a second lever 820.

[0103] The second lifting rod 731 is used for sliding cooperation with the fourth inner cavity 631. The end of the second lever 820 away from the second lifting rod 731 extends out of the outer side wall of the lower cover 120 from the fourth opening slot 832. The eighth compression spring 733 is sleeved on the second lifting rod 731 and located in the second inner cavity 622 at the upper end of the second lever 820.

[0104] The second lever 820 is used for driving the second lifting piece 732 to move upward through the second lifting rod 731 under the action of an external force. The second lifting piece 732 is used for pressing the second guide inclined surface 727 to drive the two first locking parts 721 to move backward to release the locking state of the locking block 541 and the first locking slot 722 in the upward moving state.

[0105] Through the above, the locking block 541 at the lock tongue 540 and the first locking slot 722 at the first locking part 721 are released from locking under the action of the second lifting piece 732. Therefore, the locking state between the upper cover 110 and the lower cover 120 can be preferably released, and the opening of the upper cover 110 is facilitated.

[0106] In the embodiment, the second step surface 637 is formed between the fourth inner cavity 631 and the fifth inner cavity 632. The second step surface 637 cooperates with the second lever 820 to limit the positions of the two ends of the eighth compression spring 733. Therefore, the two ends of the eighth compression spring 733 are preferably limited.

[0107] In the embodiment, the first dial lever 810 is located at the left side of the second dial lever 820, and the third sliding lever 641 in L shape is arranged at the first dial lever 810, and the fourth sliding lever 642 in L shape is arranged at the second dial lever 820;

[0108] The cutter device further comprises an interlocking unit arranged at the second mounting cavity; the second mounting cavity comprises a sixth inner cavity 741 arranged along the width direction of the sealing machine body 100, and the interlocking unit comprises an interlocking piece 643 arranged at the sixth inner cavity 741; the interlocking piece 643 is arranged below the first dial lever 810 and the second dial lever 820, and a seventh compression spring 648 is arranged between the right side wall of the interlocking piece 643 and the inner wall of the sixth inner cavity 741;

[0109] The lower end of the interlocking piece 643 is provided with a first interlocking groove 811 and a second interlocking groove 821; the upper end of the right side wall of the first interlocking groove 811 is recessed to the right side to form a second locking groove 1011, and the lower end of the right side wall of the first interlocking groove 811 is inclined downward from top to bottom to form a third guide inclined surface 1012; the right side wall of the second interlocking groove 821 is a fourth guide inclined surface 1021 inclined downward from top to bottom;

[0110] The first dial lever 810 is used to move upward by driving the third sliding lever 641 to press the third guide inclined surface 1012 to move to the second locking groove 1011, the interlocking piece 643 is used to move left under the action of the seventh compression spring 648 to realize the locking state of the first dial lever 810 and the second locking groove 1011, and the first dial lever 810 and the second locking groove 1011 are locked to limit the position of the first lifting lever 610 in the height direction;

[0111] The second dial lever 820 is used to move upward by driving the fourth sliding lever 642 to press the fourth guide inclined surface 1021 to move the interlocking piece 643 to the right, and the first dial lever 810 moves downward by the second compression spring 710 when the interlocking piece 643 moves to the right.

[0112] Through the arrangement of the interlocking unit, the worker needs to first drive the first lifting lever 610 to move upward to the upper end surface to protrude into the jacking groove 621, and then drive the first lifting lever 610 to protrude into the first opening groove 412 by covering the upper cover 110, so as to drive the end of the cutter 220 to protrude out of the cutter groove 310 to cut the food bag; therefore, the safety of the worker when using the cutter 220 to cut the food bag is increased.

[0113] Since the interlocking piece 643 can keep the position state of the upper end face of the first lifting rod 610 when it protrudes out of the jacking groove 621, it is preferable to facilitate the use of the sealing machine body 100 by the staff. Since the staff will drive the first lifting rod 610 to retract into the jacking groove 621 when the upper cover 110 and the lower cover 120 are unlocked, the end of the cutter 220 will retract into the cutter groove 310 before the upper cover 110 is opened, thereby improving the safety of the staff when using the cutter 220 to cut the food bag. Since the staff will drive the cutter 220 to retract into the cutter groove 310 when the upper cover 110 and the lower cover 120 are unlocked, it is preferable to avoid the phenomenon that the staff forgets to drive the first lifting rod 610 to retract into the jacking groove 621 when using it, thereby causing the cutter 220 to damage the food bag when performing the process of vacuumizing and sealing the food bag without cutting the food bag.

[0114] Among them, the locking function of the upper cover 110 and the lower cover 120 can be used alone; that is, when the staff does not drive the first lifting rod 610 to move upward before the upper cover 110 is closed, the staff will not affect the first lifting rod 610 when driving the second lifting rod 731 to move upward to unlock the upper cover 110 and the lower cover 120 before opening the upper cover 110. Therefore, it is preferable to avoid the end of the cutter 220 protruding into the cutter groove 310 to cause interference when the food bag is vacuumized and sealed.

[0115] In this embodiment, the upper side wall and the lower side wall of the sixth inner cavity 741 are each provided with a fourth limiting groove 742, and the upper end and the lower end of the interlocking piece 643 are provided with a fourth limiting strip 644 for sliding cooperation with the corresponding fourth limiting groove 742. Therefore, the movement direction of the interlocking piece 643 is preferably guided, and the stability of the interlocking piece 643 when moving is preferably improved.

[0116] In this embodiment, the left inner wall and the right inner wall of the sixth inner cavity 741 are each provided with a fifth limiting groove 743, and the left side wall and the right side wall of the interlocking piece 643 are respectively provided with a fifth limiting strip 645 protruding into the corresponding fifth limiting groove 743, and the seventh compression spring 648 is sleeved on the fifth limiting strip 645. Therefore, it is preferable to facilitate the installation of the interlocking piece 643 and the seventh compression spring 648, and preferably reduce the probability of bending of the seventh compression spring 648 when extending and retracting, thereby preferably improving the stability of the interlocking piece 643 when moving.

[0117] In this embodiment, the first lever 810 is provided with a first knob 646 at the end thereof extending out of the second opening slot 831, and the second lever 820 is provided with a second knob 647 at the end thereof extending out of the fourth opening slot 832; the third sliding rod 641 is fixed at the first knob 646, and the fourth sliding rod 642 is fixed at the second knob 647. Therefore, it is more convenient for the staff to drive the first lifting rod 610 and the third sliding rod 641, and the second lifting rod 731 and the fourth sliding rod 642 to move upward and downward synchronously.

[0118] Specifically, the locking mechanism has the following steps when used alone:

[0119] Step one, the locking mechanism locks the upper cover 110 and the lower cover 120.

[0120] After the staff closes the upper cover 110, the latch 540 at the upper cover 110 is inserted into the third inner cavity 634 at the lower cover 120 from the third opening slot 633; the locking block 541 at the latch 540 extrudes the first guide slope 723 at the first locking part 721, and drives the two first locking parts 721 to move away from each other; when the locking block 541 moves to the first locking groove 722, the two first locking parts 721 move towards each other under the elastic force of the third compression spring 724, and the locking block 541 and the first locking groove 722 are mutually engaged.

[0121] Step two, the locking state of the upper cover 110 and the lower cover 120 is released.

[0122] The staff drives the second knob 647 to move upward, and drives the second lever 820, the second lifting rod 731 and the second lifting piece 732 to move upward synchronously, the second lifting piece 732 extrudes the second guide slope 727 at the first locking part 721, and drives the two first locking parts 721 to move away from each other, the locking block 541 and the first locking groove 722 are separated, and the engagement state is released; the staff simultaneously rotates to open the upper cover 110, and the locking block 541 is separated from the lower cover 120 with the latch 540 from the third opening slot 633; the staff releases the second knob 647, and the second lifting rod 731 drives the second lever 820, the second lifting piece 732 and the second knob 647 to move downward synchronously under the action of the eighth compression spring 733, and the two first locking parts 721 are reset under the elastic force of the third compression spring 724.

[0123] Specifically, the cutter device has the following steps when used:

[0124] Step one, the staff opens the upper cover 110.

[0125] Step two, the staff drives the first dial button 646 up, thereby driving the first dial lever 810, the first lifting lever 610 and the third sliding lever 641 to move up synchronously. The first lifting lever 610 moves up to the position where the upper end thereof extends out of the jacking groove 621; during the upward movement of the third sliding lever 641, the upper end thereof gradually presses the third guide slope 1012 of the first interlocking groove 811 at the interlocking part 643, thereby driving the interlocking part 643 to move rightward; when the upper end of the third sliding lever 641 moves to the second locking groove 1011, the interlocking part 643 moves leftward under the action of the seventh compression spring 648 and drives the upper end of the third sliding lever 641 to interlock with the second locking groove 1011, thereby making the upper end of the first lifting lever 610 keep the position state where it extends out of the jacking groove 621.

[0126] Step three, the staff covers the upper cover 110.

[0127] The upper end of the first lifting lever 610 extends into the first opening groove 412 at the upper cover 110 and gradually presses the first sliding lever 424 upward; during the upward movement of the first sliding lever 424, the first matching block 422 presses the first helical slope 511, thereby driving the first rotating ring 421 to rotate; the second helical slope 512 presses the second matching block 423 under the action of rotation, the second matching block 423 drives the second sliding lever 425 to move downward synchronously, thereby driving the lower end of the cutter 220 to extend out of the knife groove 310 to cut the food bag; the locking tongue 540 at the upper cover 110 is inserted into the third inner cavity 634, so that the locking block 541 at the locking tongue 540 and the first locking groove 722 at the first locking part 721 are interlocked; the upper cover 110 and the lower cover 120 are locked.

[0128] Step five, the staff drives the first dial button 646 up, thereby driving the first lifting lever 610, the second lifting lever 731, the second lifting part 732 and the fourth sliding lever 642 to move up synchronously; during the upward movement of the fourth sliding lever 642, the upper end thereof gradually presses the fourth guide slope 1021 of the second interlocking groove 821 at the interlocking part 643, thereby driving the interlocking part 643 to move rightward, so that the upper end of the third sliding lever 641 and the second locking groove 1011 are disengaged from each other; thereby the first lifting lever 610 moves downward under the action of the second compression spring 710, that is, the upper end of the first lifting lever 610 disengages from the first sliding lever 424 and retracts into the jacking groove 621; the first rotating ring 421 resets under the action of the torsional spring 426, the second matching block 423 and the second sliding lever 425 move upward synchronously under the action of the first compression spring 428, thereby driving the lower end of the cutter 220 to extend out of the knife groove 310; at the same time, the first matching block 422 drives the first sliding lever 424 to move downward synchronously under the pressing action of the first helical slope 511.

[0129] Step six, after the staff open the upper cover 110, loosen the second button 647, the second lifting rod 731 in the eighth compression spring 733 under the action of the second lifting rod 820, the second lifting piece 732 and the second button 647 down reset.

[0130] In this embodiment, the cutter device includes a cutter mounting seat 440 provided at the cutter groove 310, the cutter mounting seat 440 extends into the corresponding second sub-cavity 413 and is fixed at the second sliding rod 425 at both ends respectively; the cutter mounting seat 440 is provided with a cutter mounting groove 530 at the lower end surface, and the cutter 220 is installed in the cutter mounting groove 530. Therefore, the installation of the cutter 220 is facilitated, and the replacement of the cutter 220 is facilitated.

[0131] In this embodiment, the lower cover 120 is provided with a first storage groove 231 at the upper end surface, and the upper cover 110 is provided with a second storage groove 232 at the lower end surface, the first storage groove 231 and the second storage groove 232 together form a food bag storage groove, the reel 210 is arranged at the first storage groove 231, and one end of the food bag is fixed to the side wall of the reel 210.

[0132] The upper end surface of the lower cover 120 is provided with a third housing mounting groove 2042, and the clamp mechanism includes a third housing 263 arranged at the third housing mounting groove 2042, the third housing 263 is provided with a third mounting cavity, the third mounting cavity includes a first rotating cavity 1210 communicated with the first storage groove 231, the clamp mechanism includes a first rotating part 1220, a second rotating part 1230 and a third sliding part 1240 arranged in the first rotating cavity 1210 in sequence and coaxially arranged, and the reel 210 is arranged at the end of the first rotating part 1220.

[0133] The third sliding part 1240 and the side wall of the first rotating cavity 1210 are provided with a first elastic element, the first elastic element is used to drive the third sliding part 1240 to move towards the second rotating part 1230 to realize the extrusion of the end surface of the third sliding part 1240 on the end surface of the second rotating part 1230.

[0134] The third mounting cavity includes a fifth opening groove 1361 arranged at the upper end surface of the third housing 263 and communicated with the first rotating cavity 1210, the fifth opening groove 1361 is provided with a pressing piece 211, the side wall of the third sliding part 1240 is provided with a matching piece 1241 used for sliding cooperation with the pressing piece 211, and the pressing piece 211 is used to drive the third sliding part 1240 to move away from the second rotating part 1230 through the matching piece 1241 under the pressing action to realize the mutual disengagement of the third sliding part 1240 and the second rotating part 1230.

[0135] The second elastic member is arranged between the first rotating member 1220 and the second rotating member 1230, and is used to drive the second rotating member 1230 to move towards the first rotating member 1220 to realize that the end surface of the second rotating member 1230 is tightly pressed at the end surface of the first rotating member 1220; the third elastic member is arranged between the second rotating member 1230 and the inner side wall of the first rotating cavity 1210, and is used to drive the second rotating member 1230 to reversely rotate;

[0136] The end surfaces of the first rotating member 1220 and the second rotating member 1230 that face each other are respectively provided with a first clamping part and a second clamping part used for clamping cooperation, and the first clamping part and the second clamping part are used to limit the forward rotation of the first rotating member 1220 relative to the second rotating member 1230 when the first rotating member 1220 and the second rotating member 1230 are tightly pressed; the end surfaces of the second rotating member 1230 and the third sliding member 1240 that face each other are respectively provided with a third clamping part and a fourth clamping part used for clamping cooperation, and the third clamping part and the fourth clamping part are used to limit the reverse rotation of the second rotating member 1230 when the second rotating member 1230 and the third sliding member 1240 are tightly pressed.

[0137] Through the arrangement of the clamp mechanism in the embodiment, the staff can better facilitate the forward rotation of the food bag driven by the reel 210 and the automatic reverse rotation of the reel 210.

[0138] When the upper cover 110 is opened, preferably, the food bag does not rotate under the action of the third elastic member after the staff removes the external force applied to the food bag when stretching the food bag, thereby facilitating the staff to stretch the food bag multiple times and close the upper cover 110. When the upper cover 110 is closed, the reel 210 can automatically reversely rotate to drive the food bag to rotate; and when the end of the food bag is fixed, the second rotating member 1230 can be separated from the first rotating member 1220 to reversely rotate alone, thereby stopping the rotation of the reel 210.

[0139] Specifically, under the action of the second elastic member, the end surface of the second rotating member 1230 is tightly pressed at the end surface of the first rotating member 1220, and when the end surfaces of the first rotating member 1220 and the second rotating member 1230 abut against each other, the first rotating member 1220 cannot rotate forward relative to the second rotating member 1230 under the action of the first clamping part and the second clamping part, that is, the second rotating member 1230 can only rotate forward relative to the first rotating member 1220, and the second rotating member 1230 and the first rotating member 1220 rotate in the same direction.

[0140] Specifically, when the upper cover 110 is opened, the end surface of the third sliding member 1240 is pressed against the end surface of the second rotating member 1230 under the action of the first elastic member. When the end surface of the third sliding member 1240 and the end surface of the second rotating member 1230 abut against each other, the second rotating member 1230 cannot be reversely rotated under the action of the third clamping portion and the fourth clamping portion, that is, the second rotating member 1230 can only be forwardly rotated.

[0141] Specifically, after the upper cover 110 is closed, the upper cover 110 presses the pressing member 211 downward, thereby separating the end surface of the third sliding member 1240 from the end surface of the second rotating member 1230, so that the second rotating member 1230 can be reversely rotated.

[0142] In the embodiment, the third clamping portion includes a plurality of third clamping teeth 1235 which are circumferentially spaced apart and arranged at the end surface of the second rotating member 1230, and the fourth clamping portion includes a plurality of fourth clamping teeth 1244 which are circumferentially spaced apart and arranged at the end surface of the third sliding member 1240, and the third clamping teeth 1235 are used for clamping with the fourth clamping teeth 1244. The third clamping teeth 1235 include a fifth spiral inclined surface 1236 and a third locking surface 1237 which are arranged continuously, and the fourth clamping teeth 1244 include a sixth spiral inclined surface 1245 and a fourth locking surface 1246 which are arranged continuously. The fifth spiral inclined surface 1236 and the sixth spiral inclined surface 1245 are slidingly matched, and the third locking surface 1237 and the fourth locking surface 1246 are matched with each other to limit the reverse rotation of the second rotating member 1230 relative to the third sliding member 1240.

[0143] Through the above, when the end surface of the third sliding member 1240 and the end surface of the second rotating member 1230 abut against each other, the third locking surface 1237 and the fourth locking surface 1246 are matched with each other to preferably limit the reverse rotation of the second rotating member 1230, and the fifth spiral inclined surface 1236 and the sixth spiral inclined surface 1245 are slidingly matched to preferably realize the forward rotation of the second rotating member 1230.

[0144] In the embodiment, the first clamping portion includes a plurality of first clamping teeth 1221 which are circumferentially spaced apart and arranged at the end surface of the first rotating member 1220, and the second clamping portion includes a plurality of second clamping teeth 1232 which are circumferentially spaced apart and arranged at the end surface of the second rotating member 1230, and the first clamping teeth 1221 are used for clamping with the second clamping teeth 1232. The first clamping teeth 1221 include a third spiral inclined surface 1222 and a first locking surface 1223 which are arranged continuously, and the second clamping teeth 1232 include a fourth spiral inclined surface 1233 and a second locking surface 1234 which are arranged continuously. The third spiral inclined surface 1222 and the fourth spiral inclined surface 1233 are slidingly matched, and the first locking surface 1223 and the second locking surface 1234 are matched with each other to limit the forward rotation of the first rotating member 1220 relative to the second rotating member 1230.

[0145] By the above, the first locking surface 1223 and the second locking surface 1234 cooperate to preferably limit the forward rotation of the first rotating member 1220 relative to the second rotating member 1230, thereby preferably achieving the synchronous rotation of the first rotating member 1220 and the second rotating member 1230; the third spiral slope 1222 and the fourth spiral slope 1233 slidingly cooperate to preferably achieve the reverse rotation of the first rotating member 1220 relative to the second rotating member 1230.

[0146] In the embodiment, the third elastic member includes a clockwork 1231 fixed at the outer side wall of the second rotating member 1230 and the inner side wall of the first rotating cavity 1210 respectively. Therefore, the automatic reverse rotation of the second rotating member 1230 is preferably achieved, and the installation of the clockwork 1231 is preferably facilitated.

[0147] In the embodiment, the third sliding member 1240 is provided with a first through hole 1321 penetrating the third sliding member 1240 along the axis of the reel 210, the inner wall of the middle portion of the first through hole 1321 is radially expanded to form a second flange 1322 toward the axis of the first through hole 1321, and the first rotating cavity 1210 is provided with a first guide column 1351 extending toward the direction of the reel 210, which slidingly cooperates with the inner wall of the second flange 1322. Therefore, the moving direction of the third sliding member 1240 is preferably guided, and the stability of the axial movement of the third sliding member 1240 is improved.

[0148] In the embodiment, the second rotating member 1230 is provided with a second through hole 1341 penetrating the second rotating member 1230 along the axis of the reel 210, the second connecting plate 1342 is provided at the middle portion of the inner wall of the second through hole 1341, the second connecting plate 1342 is provided with a second guide column 1345 parallel to the axis of the reel 210 at the end surface toward the second flange 1322; the second guide column 1345 is provided with a first guide groove 1343 at the end surface toward the second flange 1322 for slidingly cooperating with the first guide column 1351, and the first guide column 1351 cooperates with the first guide groove 1343. Therefore, the moving and rotating directions of the second rotating member 1230 and the moving direction of the third sliding member 1240 are preferably guided, and the stability of the axial movement and axial rotation of the second rotating member 1230 and the stability of the axial movement of the third sliding member 1240 are improved.

[0149] In the embodiment, the second connecting plate 1342 is provided with a third guide column 1334 axially arranged at the end surface opposite to the second flange 1322, and the first rotating member 1220 is provided with a first mounting groove 1331 at the end portion facing the second rotating member 1230, and the first mounting groove 1331 is provided with a second guide groove 1332 at the bottom surface for slidingly cooperating with the third guide column 1334, and the third guide column 1334 rotationally cooperates with the second guide groove 1332. Therefore, the movement and rotation direction of the second rotating member 1230 is preferably guided, and the stability of the axial movement and circumferential rotation of the second rotating member 1230 is improved.

[0150] In the embodiment, the second elastic member includes a first tension spring 1345 sleeved on the third guide column 1334, the first mounting groove 1331 is provided with a first rotating member 1333 at the bottom wall for axial rotation of the reel 210, and the first tension spring 1345 is fixed at the first rotating member 1333 and the second connecting plate 1342 at both ends, respectively. Therefore, the installation of the first tension spring 1345 is facilitated, and the bending of the first tension spring 1345 during extension and contraction is preferably avoided, and the stability of the second rotating member 1230 during axial movement is preferably improved. Meanwhile, the first rotating member 1333 capable of rotating preferably avoids the interference of the first tension spring 1345 during the separate rotation of the second rotating member 1230.

[0151] In the embodiment, the third housing 263 is provided with a sixth opening groove 1352 communicating with the first rotating cavity 1210 and a blocking member 1251 for blocking the sixth opening groove 1352 at the outer end surface, and the first guide column 1351 is fixed at one end of the end surface of the blocking member 1251. The outer end surface of the lower cover 120 is the end surface of the lower cover 120 located at both ends of the length direction of the sealing machine body 100. Therefore, the installation of the first rotating member 1220, the second rotating member 1230 and the third sliding member 1240 is facilitated.

[0152] In the embodiment, the first elastic member includes a fourth compression spring 1352 sleeved on the first guide column 1351, and the blocking member 1353 and the second flange 1322 are used for limiting the both ends of the fourth compression spring 1352. Therefore, the installation of the fourth compression spring 1352 is facilitated, and the limitation of the both ends of the fourth compression spring 1352 is preferably achieved.

[0153] In the embodiment, the first rotating cavity 1210 is provided with a sixth limiting groove 1212 for slidingly cooperating with the cooperating member 1241. Therefore, the movement direction of the third sliding member 1240 is preferably guided, and the circumferential rotation of the third sliding member 1240 is limited.

[0154] In the embodiment, the fifth guide inclined surface 1242 is formed on the upper end surface of the fitting member 1241, and the lower end surface of the pressing member 211 is used to press the fifth guide inclined surface 1242 when moving downward to realize the movement of the third sliding member 1240 away from the second rotating member 1230. Therefore, the axial movement of the third sliding member 1240 is driven when the fitting member 1241 moves downward.

[0155] In the embodiment, the third stepped surface 1213 is formed between the fifth opening groove 1361 and the sixth limiting groove 1212, the first flange 1243 is arranged on the side wall of the fitting member 1241, and the first flange 1243 is used to cooperate with the third stepped surface 1213 to limit the disengagement of the fitting member 1241 from the fifth opening groove 1361. Therefore, the disengagement of the fitting member 1241 from the fifth opening groove 1361 is limited.

[0156] In the embodiment, the first fixed groove 1311 is arranged on the end of the first rotating member 1220 towards the reel 210, and the first fixed block 1312 is arranged on both ends of the reel 210 to be inserted and cooperated with the corresponding first fixed groove 1311. Therefore, the installation between the first rotating member 1220 and the reel 210 is facilitated, and the same part rotation of the first rotating member 1220 and the reel 210 is realized.

[0157] Specifically, the clamp mechanism has the following steps when in use:

[0158] Step one, the staff opens the upper cover 110, pulls the food bag to drive the reel 210 to synchronously and positively rotate with the first rotating member 1220; at this time, the end surface of the first rotating member 1220 and the end surface of the second rotating member 1230 are tightly pressed against each other, the first locking surface 1223 at the first rotating member 1220 and the second locking surface 1234 at the second rotating member 1230 are locked with each other, so that the second rotating member 1230 synchronously and positively rotates with the first rotating member 1220. Since the fifth spiral inclined surface 1236 at the third tooth 1235 and the sixth spiral inclined surface 1245 at the fourth tooth 1244 are in sliding cooperation, the third tooth 1235 of the second rotating member 1230 repeatedly disengages from the corresponding fourth tooth 1244 at the third sliding member 1240 and engages with the adjacent fourth tooth 1244 during the rotation of the second rotating member 1230, so that the second rotating member 1230 positively rotates alone away from the third sliding member 1240.

[0159] Step two, after the staff pulls the food bag, the end surface of the third sliding member 1240 and the end surface of the second rotating member 1230 are tightly pressed against each other, the fourth locking surface 1246 at the third sliding member 1240 and the third locking surface 1237 at the second rotating member 1230 are locked with each other, so that the second rotating member 1230 cannot reversely rotate relative to the third sliding member 1240, and thus the reel 210 stops rotating.

[0160] Step three, the staff covers the cover 110, the lower end surface of the cover 110 extrudes the pressing piece 211 to make it move downward, drives the fifth guide inclined surface 1242 at the lower end of the pressing piece 211 extruding the matching piece 1241, and then drives the matching piece 1241 to move synchronously with the third sliding piece 1240 away from the second rotating piece 1230, and then the third sliding piece 1240 and the second rotating piece 1230 are disengaged, and the locking state of the fourth locking surface 1246 and the third locking surface 1237 is released. The second rotating piece 1230 is reversely rotated under the action of the clockwork 1231, and the end surface of the first rotating piece 1220 and the end surface of the second rotating piece 1230 are extruded under the action of the first tension spring 1345. That is, the first tooth 1221 and the second tooth 1232 are engaged, and at this time the second rotating piece 1230 drives the first rotating piece 1220 to reversely rotate synchronously with the reel 210, and drives the food bag to rotate back to the reel 210. When the end of the food bag is fixed, the reel 210 and the first rotating piece 1220 stop rotating, and at this time the second rotating piece 1230 is reversely rotated, and the second tooth 1232 of the second rotating piece 1230 repeatedly disengages from the corresponding first tooth 1221 of the first rotating piece 1220 and engages with the adjacent first tooth 1221 during the rotation of the second rotating piece 1230, so that the second rotating piece 1230 is disengaged from the first rotating piece 1220 and reversely rotates alone.

[0161] In the embodiment, the lower cover 120 is provided with a third storage groove 2011, and the upper cover 110 is provided with a fourth storage groove 241, and the third storage groove 2011 and the fourth storage groove 241 jointly form a compression roller mounting groove.

[0162] The compression mechanism includes a first compression roller 1111 and a second compression roller 1112 arranged in the compression roller mounting groove, and a first aperture is formed between the first compression roller 1111 and the second compression roller 1112 for the food bag to pass through. The food bag is used to drive the first compression roller 1111 and the second compression roller 1112 to rotate when moving, and the first compression roller 1111 and the second compression roller 1112 are used to limit the movement of the food bag when stationary. The compression mechanism further comprises a limiting unit arranged at both ends of the first compression roller 1111 and used to limit the rotation of the first compression roller 1111, and the first compression roller 1111 is used to limit the movement of the food bag when stationary.

[0163] Through the above, the rotation of the first compression roller 1111 can be limited to better limit the movement of the food bag, and the length of the food bag stretching and rotating is better realized.

[0164] In the embodiment, the lower cover 120 is provided with a fourth housing mounting groove 043 at the upper end thereof, and the limiting unit comprises a fourth housing 264 provided at the fourth housing mounting groove 2043, and the fourth housing 264 is provided with a fourth mounting cavity for mounting the limiting unit, and the fourth mounting cavity comprises a second rotating groove 1811 communicating with the third storage groove 2011 and a first combined cavity 1812 communicating with the second rotating groove 1811.

[0165] The limiting unit comprises a third rotating member 1410, a fourth rotating member 1420 and a fifth rotating member 1630 which are coaxially arranged along the axis of the reel 210 in sequence, the first compression roller 1111 is arranged at the third storage groove 2011, the third rotating member 1410 is fixedly arranged at the end of the second compression roller 1112, the third rotating member 1410 is rotationally matched with the second rotating groove 1811, and the fourth rotating member 1420 and the fifth rotating member 1630 are arranged at the first combined cavity 1812.

[0166] The first combined cavity 1812 is further provided with a first driven member 1441 and a second driven member 1442 which are coaxially arranged, and a driven shaft 1440 for mounting the first driven member 1441 and the second driven member 1442; the third rotating member 1410 drives the first driven member 1441 to rotate to drive the fourth rotating member 1420 to rotate synchronously with the first driven member 1441, and the fourth rotating member 1420 drives the second driven member 1442 to rotate to drive the fifth rotating member 1630 to rotate synchronously with the second driven member 1442.

[0167] The fifth rotating member 1630 is provided with a first blocking member 1711 at the outer peripheral wall thereof, and the first combined cavity 1812 is provided with a second locking portion, and the second locking portion comprises a second blocking member 1712, and the first compression roller 1111 is used to stop rotating when the fifth rotating member 1630 rotates to the second blocking member 1712 abutting against the first blocking member 1711.

[0168] The fourth rotating member 1420 is provided with a plurality of third locking grooves 1510 at the outer peripheral wall thereof and spaced along the circumference thereof, and the first combined cavity 1812 is provided with a third locking portion 1520 for cooperating with the third locking grooves 1510 to limit the reverse rotation of the fourth rotating member 1420.

[0169] In the embodiment, when the fourth rotating member 1420 rotates forward to the fifth rotating member 1630 stops rotating, the third locking portion 1520 is located between the two third locking grooves 1510.

[0170] Through the above, the rotation number of the first compression roller 1111 can be preferably limited to realize the limitation of the stretching and rotation length of the food bag.

[0171] The third rotating part 1410, the fourth rotating part 1420, the fifth rotating part 1630, the first driven part 1441 and the second driven part 1442 are arranged preferably to realize differential rotation between the third rotating part 1410, the fourth rotating part 1420 and the fifth rotating part 1630, so as to preferably realize the restriction of the rotation number of the third rotating part 1410 by limiting the rotation angle of the fifth rotating part 1630, and further realize the equal length stretching of the food bag.

[0172] The third locking part 1520 and the third locking groove 1510 can cooperate to enable the forward rotation of the fourth rotating part 1420 and restrict the reverse rotation of the fourth rotating part 1420; therefore, when the fourth rotating part 1420 rotates forward to the point that the fifth rotating part 1630 stops rotating, the third locking part 1520 is located between the two third locking grooves 1510; at this time, when the food bag rotates back to drive the third rotating part 1410 to rotate reversely to the point that the third locking part 1520 and the third locking groove 1510 cooperate with each other, the fourth rotating part 1420 stops reverse rotation, and further realizes the equal length rotation back of the food bag.

[0173] In the embodiment, the upper end of the fourth housing 264 is provided with two pressure roller mounting seats 1121, and a pressure roller mounting shaft 1122 for mounting the second pressure roller 1112 is connected between the two pressure roller mounting seats 1121, and the second pressure roller 1112 is in rotating cooperation with the pressure roller mounting shaft 1122. Therefore, the mounting of the second pressure roller 1112 can be preferably realized.

[0174] In the embodiment, the outer circumferential part of the third rotating part 1410 is provided with first meshing teeth 1411, and the outer circumferential wall of the first driven part 1441 and the fourth rotating part 1420 is respectively provided with N second meshing teeth 1443 and third meshing teeth 1421 at intervals in the circumferential direction, and N is a positive integer; the second meshing teeth 1443 are used for meshing with the first meshing teeth 1411, and the third meshing teeth 1421 are used for meshing with the second meshing teeth 1443.

[0175] The outer circumferential wall of the fourth rotating part 1420 is further provided with fourth meshing teeth 1422 for meshing with the third meshing teeth 1421, and the third meshing teeth 1421 and the fourth meshing teeth 1422 are respectively arranged at the two ends of the fourth rotating part 1420; the outer circumferential wall of the second driven part 1442 and the fifth rotating part 1630 is respectively provided with N fifth meshing teeth 1444 and sixth meshing teeth 1431 at intervals; the fifth meshing teeth 1444 are used for meshing with the fourth meshing teeth 1422, and the sixth meshing teeth 1431 are used for meshing with the fifth meshing teeth 1444.

[0176] Through the above, the differential rotation between the third rotating part 1410, the fourth rotating part 1420 and the fifth rotating part 1630 can be preferably realized.

[0177] In the embodiment, the fourth shell 264 is provided with an eighth opening slot 1910 at the upper end surface thereof, the eighth opening slot 1910 being communicated with the first cavity 1812, and the second locking part includes a third lifting rod 1713 for slidingly fitting with the eighth opening slot 1910; the third lifting rod 1713 is provided with a third flange 1714 at the end thereof extending into the first cavity 1812, and the second stop piece 1712 is arranged at the lower end surface of the third flange 1714; the third lifting rod 1713 is provided with a lifting ring 1610 at the end thereof extending out of the upper side wall of the lower cover 120;

[0178] A fourth stepped surface 1715 is formed between the first cavity 1812 and the eighth opening slot 1910, and the third lifting rod 1713 is provided with a fifth compression spring 1716 at the position between the third flange 1714 and the fourth stepped surface 1715, and the lifting ring 1610 is used for cooperating with the upper side wall of the lower cover 120 to limit the second locking part from being separated from the eighth opening slot 1910;

[0179] The fifth compression spring 1716 is used for driving the second stop piece 1712 to move downward to realize the abutting state between the first stop piece 1711 and the second stop piece 1712, and the lifting ring 1610 is used for moving upward under the action of an external force to realize the separation between the first stop piece 1711 and the second stop piece 1712.

[0180] Through the above, the second stop piece 1712 moves downward under the action of the fifth compression spring 1716 to limit the first stop piece 1711 at the position of the fifth rotating piece 1630, thereby preferably limiting the rotation angle of the fifth rotating piece 1630. After the second stop piece 1712 moves upward, the limitation of the first stop piece 1711 at the position of the fifth rotating piece 1630 is released, thereby preferably releasing the limitation of the rotation of the fifth rotating piece 1630. Therefore, the equal-length stretching of the food bag is preferably realized.

[0181] In the embodiment, the third locking slot 1510 is arranged between the third engaging tooth 1421 and the fourth engaging tooth 1422; the first cavity 1812 is provided with a second sliding slot 1521 at the side wall thereof, the third locking part 1520 is arranged in the second sliding slot 1521, and the second sliding slot 1521 is further provided with a sixth compression spring 1523 for driving the third locking part 1520 to move radially towards the axis of the fourth rotating piece 1420 to the end thereof extending out of the third locking part 1520; the end of the third locking part 1520 is used for plug-in fitting with the third locking slot 1510 to limit the reverse rotation of the fourth rotating piece 1420.

[0182] By the above, the fourth rotating piece 1420 reversely rotates to the fifth locking surface 1511 and the sixth locking surface 1522 are locked with each other, and then the fourth rotating piece 1420 stops rotating, that is, the food bag stops rotating. Since the number of rotations between the third rotating piece 1410, the fourth rotating piece 1420 and the fifth rotating piece 1630 is a multiple relationship, preferably, the fifth rotating piece 1630 is positively rotated to the first blocking piece 1711 and the second blocking piece 1712 are locked with each other, and then the relative position between the third locking part 1520 and the third locking groove 1510 is the same, thereby preferably realizing the equal length rotation of the food bag.

[0183] In the embodiment, the third locking groove 1510 includes the fifth locking surface 1511 arranged radially along the fourth rotating piece 1420, and the third locking part 1520 is provided with the sixth locking surface 1522 at the end thereof facing the fourth rotating piece 1420, and the fifth locking surface 1511 and the sixth locking surface 1522 are matched with each other to limit the end of the third locking part 1520 from being separated from the third locking groove 1510. Further, when the fourth rotating piece 1420 reversely rotates, the third locking part 1520 cannot be separated from the third locking groove 1510, thereby preferably limiting the reverse rotation of the fourth rotating piece 1420.

[0184] In the embodiment, the third locking groove 1510 further includes the sixth guide inclined surface 1512, and the fifth locking surface 1511 and the sixth guide inclined surface 1512 are arranged opposite to each other, and the third locking part 1520 is provided with the seventh guide inclined surface 1921 at the end thereof facing the fourth rotating piece 1420, and the sixth guide inclined surface 1512 is used to press the seventh guide inclined surface 1921 under the positive rotation of the fourth rotating piece 1420 to realize the end of the third locking part 1520 separated from the third locking groove 1510. Further, when the fourth rotating piece 1420 positively rotates, the third locking part 1520 can be separated from the third locking groove 1510, thereby preferably realizing the positive rotation of the fourth rotating piece 1420.

[0185] Specifically, the pressing mechanism has the following steps when used in particular:

[0186] Step one, open the upper cover 110, the worker stretches the food bag, drives the first compression roller 1111 and the third rotating part 1410 to rotate forward, under the meshing effect of the first meshing tooth 1411, the second meshing tooth 1443 and the third meshing tooth 1421, the third rotating part 1410 rotates forward at the speed of multiple of the rotating number of the fourth rotating part 1420; under the effect of the fourth meshing tooth 1422, the fifth meshing tooth 1444 and the sixth meshing tooth 1431, the fourth rotating part 1420 rotates forward at the speed of multiple of the rotating number of the fifth rotating part 1630. When the fourth rotating part 1420 rotates to the third locking part 1520 under the action of the sixth compression spring 1523, the third locking part 1520 extends into the third lock slot 1510, the sixth guide inclined surface 1512 at the fourth rotating part 1420 extrudes the seventh guide inclined surface 1921, drives the third locking part 1520 to move away from the fourth rotating part 1420 to the third lock slot 1510, so that the fourth rotating part 1420 continues to rotate forward. When the fifth rotating part 1630 rotates forward to the first stop piece 1711 and the second stop piece 1712, the fifth rotating part 1630 stops rotating, drives the fourth rotating part 1420, the third rotating part 1410 and the first compression roller 1111 to stop rotating, so that the food bag cannot continue to stretch. At this time, the fourth rotating part 1420 rotates to the third locking part 1520 between the two third lock slots 1510.

[0187] Step two, close the upper cover 110, after the food bag is cut, under the action of the spring 1231, the food bag rotates, drives the first compression roller 1111 and the third rotating part 1410 to rotate reversely, and then drives the fourth rotating part 1420 to rotate reversely. When the third locking part 1520 at the fourth rotating part 1420 rotates to the third lock slot 1510, under the action of the sixth compression spring 1523, the third locking part 1520 extends into the third lock slot 1510, under the action of the fifth locking surface 1511 and the sixth locking surface 1522, the third locking part 1520 and the third lock slot 1510 are locked with each other, and the fourth rotating part 1420 stops rotating reversely.

[0188] Step three, when the worker stretches the food bag again, the third lifting rod 1713 and the second stop piece 1712 are driven to move up by the lifting ring 1610, the first stop piece 1711 and the second stop piece 1712 are separated from each other, and the fifth rotating part 1630 rotates forward.

[0189] In the embodiment, the second installation groove 2021 is arranged at the upper end surface of the lower cover, the vacuumizing device comprises a sealing structure, the sealing structure comprises an upper vacuum piece 240 arranged at the lower end surface of the upper cover 110 and having an upper vacuum groove 241, and a lower vacuum piece 243 arranged in the second installation groove 2021 and having a lower vacuum groove 242, and the sealing structure further comprises a driving unit arranged in the second installation groove 2021 and used for driving the lower vacuum piece 243 to move upward and downward; the lower vacuum piece 243 is used for forming a second gap between the lower vacuum piece 243 and the upper vacuum piece 240 after moving downward to the second installation groove 2021, so that the food bag passes through and moves, and the upper vacuum piece 240 is used for achieving the sealing cooperation between the upper vacuum piece 240 and the lower vacuum piece 243 after moving upward to abut against the upper vacuum piece 240.

[0190] In the embodiment, the lower vacuum piece 243 moves toward the upper vacuum piece 240 when moving upward, and the lower vacuum piece 243 moves away from the upper vacuum piece 240 when moving downward.

[0191] In the embodiment, the vacuumizing device further comprises an air pump used for extracting air in the lower vacuum groove 242 and the upper vacuum groove 241. The air pump can adopt an existing conventional structure, and an air extraction pipe of the air pump is communicated with the upper vacuum groove 241.

[0192] Since the opening side of the food bag is located in the lower vacuum groove 242 and the upper vacuum groove 241, and the lower vacuum piece 243 and the upper vacuum piece 240 are sealingly arranged, the air pump can extract air in the food bag by extracting air in the lower vacuum groove 242 and the upper vacuum groove 241; the principle and technology of the air pump extracting air can adopt an existing technology.

[0193] Through the arrangement of the vacuumizing device, when the lower vacuum piece 243 is located in the second installation groove 2021, the second gap is formed between the upper vacuum piece 240 and the lower vacuum piece 243, so that the food bag can move, and the food bag after cutting can normally rotate when the vacuumizing process is not performed; after the lower vacuum piece 243 moves upward to form the sealing cooperation with the upper vacuum piece 240, the food bag can perform the vacuumizing process. The sealing state between the upper vacuum piece 240 and the lower vacuum piece 243 can be controlled by controlling the upward moving amount of the lower vacuum piece 243, so that the probability of the phenomenon that the food bag cannot be vacuumized due to the food bag being pressed too tightly by the upper vacuum piece 240 and the lower vacuum piece 243 is preferably reduced.

[0194] In the embodiment, the driving unit comprises a first matching strip 2110 fixed at the lower end surface of the lower vacuum piece 243 along the length direction of the sealing machine body 100, and the lower end surface of the first matching strip 2110 forms an eighth guide inclined surface 2111; the driving unit further comprises a third matching block 2031, and the upper end surface of the third matching block 2031 forms a ninth guide inclined surface 2035 for sliding matching with the eighth guide inclined surface 2111; the third matching block 2031 is used to drive the upward movement and downward movement of the lower vacuum piece 243 by moving along the length direction of the sealing machine body 100.

[0195] Through the above, the upward movement and downward movement of the lower vacuum piece 243 are preferably realized. Since the upward movement and downward movement distance of the lower vacuum piece 243 is short, the upward movement and downward movement of the lower vacuum piece 243 driven by the mutual matching of the eighth guide inclined surface 2111 and the ninth guide inclined surface 2035 can preferably improve the accuracy of the upward movement and downward movement amount of the lower vacuum piece 243.

[0196] In the embodiment, the driving unit further comprises a lead screw 2032 arranged in the second mounting groove 2021 for driving the movement of the third matching block 2031, and a motor 2034 for driving the rotation of the lead screw 2032; the third matching block 2031 is provided with a matching hole 2211 for thread matching with the lead screw 2032.

[0197] Through the above, the movement of the third matching block 2031 along the length direction of the sealing machine body 100 is preferably driven, wherein the lead screw 2032 preferably improves the movement accuracy of the third matching block 2031, thereby improving the accuracy of the upward movement and downward movement amount of the lower vacuum piece 243.

[0198] In the embodiment, the eighth guide inclined surface 2111 is provided with a third guide groove 2112 with a T-shaped cross section, and the ninth guide inclined surface 2035 is provided with a sixth limiting strip 2036 with a T-shaped cross section and for sliding matching with the third guide groove 2112, and the third guide groove 2112 is used to cooperate with the sixth limiting strip 2036 to limit the first matching strip 2110 from disengaging from the third matching block 2031.

[0199] Through the above, the movement direction of the lower vacuum piece 243 and the movement direction of the third matching block 2031 are preferably guided, thereby improving the stability of the lower vacuum piece 243 and the third matching block 2031 during movement. The third guide groove 2112 and the sixth limiting strip 2036 with T-shaped cross sections can preferably avoid the separation between the lower vacuum piece 243 and the third matching block 2031.

[0200] In the embodiment, the driving unit further comprises a fourth guide column 2033 arranged in the second mounting groove 2021, and the third matching block 2031 is provided with a fourth guide hole 2212 for slidingly matching with the fourth guide column 2033. Therefore, the moving direction of the third matching block 2031 is preferably guided, and the stability of the third matching block 2031 during movement is improved.

[0201] Specifically, the vacuumizing device has the following steps during use:

[0202] Step one: when the vacuumizing process is performed, the staff member inserts the open end of the food bag between the upper vacuum groove 241 and the lower vacuum groove 242, and then covers the cover 110.

[0203] Step two: the staff member drives the screw rod 2032 to rotate by the motor 2034, and drives the third matching block 2031 to move, and the ninth guide slope 2035 of the third matching block 2031 extrudes the eighth guide slope 2111, and drives the first matching strip 2110 and the lower vacuum piece 243 to synchronously move upward to the lower vacuum piece 243 and the upper vacuum piece 240 to clamp the end of the food bag. At this time, the upper vacuum groove 241, the lower vacuum groove 242 and the inside of the food bag form a sealed space;

[0204] Step three: the staff member performs the vacuumizing process on the food bag through the air in the sealed space.

[0205] Step four: after the vacuumizing is completed, the staff member drives the screw rod 2032 to rotate by the motor 2034, and drives the third matching block 2031 to move, and the ninth guide slope 2035 of the third matching block 2031 extrudes the eighth guide slope 2111, and drives the first matching strip 2110 and the lower vacuum piece 243 to synchronously move downward, and the lower vacuum piece 243 is retracted into the second mounting groove 2021.

[0206] In the embodiment, the sealing device comprises a heat sealing strip 250 arranged at the lower end surface of the cover 110 and the upper end surface of the lower cover 120, and the heat sealing strip 250 seals the food bag. Therefore, the sealing of the food bag can be preferably realized.

[0207] The heat sealing strip 250 can be a conventional heat sealing strip, and the principle and technology of the heat sealing strip 250 for sealing the food bag can adopt the existing technology.

[0208] It is easy to understand that, based on one or more embodiments provided in the present application, a person skilled in the art can combine, split, recombine, etc. the embodiments of the present application to obtain other embodiments, and these embodiments do not exceed the protection scope of the present application.

[0209] The above description of the present application and its embodiments is illustrative and not restrictive, and the examples shown are only part of the embodiments of the present application, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by it, without departing from the spirit of the present application, similar structural modes and examples can be designed without creativity, and all should belong to the protection scope of the present application.

Claims

1. A cutting device, characterized in that: The device includes a cutter (220) and a first housing (261) located at both ends of the cutter (220). The first housing (261) is used to cooperate with the upper cover (110) of the food bag sealing machine. A first mounting cavity (410) is provided at the first housing (261). An mounting unit is provided in the first mounting cavity (410). The mounting unit is used to drive the end of the cutter (220) to extend out and retract into the knife groove (310) at the upper cover (110) of the food bag sealing machine. The cutter device also includes a locking mechanism for locking the upper cover (110) and the lower cover (120) when the cutter (220) extends out of the lower end face of the upper cover (110). It also includes a second housing (262), which is used to cooperate with the lower cover (120) of the food bag sealing machine; a lifting unit is provided at the second housing (262); The first mounting cavity (410) includes a first sub-cavity (411), and the mounting unit includes a first rotating ring (421) disposed in the first sub-cavity (411). The lower end face of the first rotating ring (421) is provided with a first helical inclined surface (511) and a second helical inclined surface (512) arranged in a split configuration. The mounting unit also includes a first mating block (422) and a second mating block (423) for slidingly engaging with the first helical inclined surface (511) and the second helical inclined surface (512), respectively. The first mounting cavity (410) includes a first opening groove (412) and a second sub-cavity (413) located at the lower end of the first sub-cavity (411) and arranged along the axial direction of the first rotating ring (421). The first opening groove (412) penetrates the lower end face of the first housing (261), and the second sub-cavity (413) communicates with the knife groove (310). A first sliding rod (424) for sliding cooperation with the first opening groove (412) is fixedly provided at the lower end face of the first mating block (422), and a second sliding rod (425) extending into the second sub-cavity (413) is fixedly provided at the lower end face of the second mating block (423). The cutter (220) is fixedly cooperated with the second sliding rod (425). The first sliding rod (424) is used to move upward under the action of the lifting unit and drive the first rotating ring (421) to rotate along its axis. The second sliding rod (425) is used to drive the cutter (220) to extend out of the cutter groove (310) under the action of the rotation of the first rotating ring (421).

2. The cutting device according to claim 1, characterized in that: The cutting device also includes torsion springs (426) with both ends fixed to the first rotating ring (421) and the side wall of the first sub-cavity (411), respectively. The torsion springs (426) are used to drive the first rotating ring (421) to rotate in the opposite direction after the lifting unit disengages from the first sliding rod (424). The mounting unit also includes a cylindrical cylinder (427) fixedly disposed at the lower end face of the second sub-cavity (413). The cylindrical cylinder (427) is provided with a first sliding groove (521) for slidingly engaging with the lower end of the second sliding rod (425). The cylindrical cylinder (427) is fitted with a first compression spring (428) for driving the upper end of the second mating block (423) to be pressed against the second spiral inclined surface (512). The first compression spring (428) is used to drive the second mating block (423) to move upward when the first rotating ring (421) rotates in the opposite direction, so as to drive the cutter (220) to retract into the cutter groove (310).

3. The cutting device according to claim 2, characterized in that: The inner circumferential wall of the first rotating ring (421) is provided with a first connecting plate (431). The upper end face and the lower end face of the first connecting plate (431) are respectively provided with a first mounting post (432) and a second mounting post (433). The first mounting cavity (410) also includes a third sub-cavity (414) and a fourth sub-cavity (415) respectively provided at the upper end and the lower end of the first sub-cavity (411). The third sub-cavity (414) and the fourth sub-cavity (415) are respectively rotatably engaged with the first mounting post (432) and the second mounting post (433). The third sub-cavity (414) and the fourth sub-cavity (415) are respectively used to cooperate with the first mounting post (432) and the second mounting post (433) to restrict the axial movement of the first rotating ring (421). The torsion spring (426) is sleeved on the first mounting post (432).

4. A cutting device according to claim 3, characterized in that: The inner wall of the fourth sub-cavity (415) is provided with a first sector-shaped limiting groove (416), and the side wall of the second mounting post (433) is provided with a first limiting block (434) for rotating with the first sector-shaped limiting groove (416). The first sector-shaped limiting groove (416) and the first limiting block (434) cooperate with each other to limit the rotation angle of the first rotating ring (421).

5. A cutting device according to claim 2, characterized in that: The second housing (262) is provided with a second mounting cavity, and the lifting unit includes a first lifting rod (610), and a first lever (810) is provided at the lower end of the first lifting rod (610). The second mounting cavity includes a lifting groove (621) with an opening at the upper end, a second inner cavity (622) located at the lower end of the lifting groove (621), and a second opening groove (831) located on the outer wall of the lower cover (120) and communicating with the second inner cavity (622); the lifting groove (621) is used to slide with the first lifting rod (610), the end of the first lever (810) away from the first lifting rod (610) extends out from the second opening groove (831) to the outer wall of the lower cover (120), and a second compression spring (710) is sleeved on the first lifting rod (610), the second compression spring (710) is located at the upper end of the first lever (810) and is located in the second inner cavity (622); The first lever (810) is used to drive the first sliding rod (424) upward through the first lifting rod (610) under the action of an external force. The end is used to extend into the first opening groove (412) after the first sliding rod (424) moves upward to squeeze the first sliding rod (424) and make it move upward. The first lifting rod (610) is used to move downward under the action of the second compression spring (710) to disengage from the first sliding rod (424).

6. A cutting device according to claim 5, characterized in that: The locking mechanism includes a latch (540) located at the lower end face of the first housing (261) and a locking unit located in the second mounting cavity; The second mounting cavity also includes a third opening groove (633) and a third inner cavity (634) arranged vertically, the third opening groove (633) being used to engage with the locking tongue (540); The locking unit includes two first locking parts (721) disposed in the third inner cavity (634) and arranged in a split manner. The inner end face of the first locking part (721) is recessed inward to form a first locking groove (722). The side walls at both ends of the latch (540) expand outward to form a locking block (541). The locking block (541) is used to lock with the first locking groove (722) to prevent the latch (540) from disengaging from the third opening groove (633).

7. A cutting device according to claim 6, characterized in that: The second mounting cavity also includes a fourth inner cavity (631) and a fifth inner cavity (632) arranged vertically, and a fourth opening groove (832) located on the side wall of the second housing (262) and communicating with the fifth inner cavity (632). The locking unit also includes a second lifting rod (731) arranged along the height direction of the sealing machine body (100) and traversing the fourth inner cavity (631). The second lifting rod (731) is used to slide with the fourth inner cavity (631). The end of the second lever (820) away from the second lifting rod (731) extends from the fourth opening slot (832) to the outer wall of the lower cover (120). An eighth compression spring (733) is sleeved on the second lifting rod (731). The eighth compression spring (733) is located at the upper end of the second lever (820) and is located in the second inner cavity (622). The second lever (820) is used to drive the second lifting member (732) upward by the second lifting rod (731) under the action of an external force to release the locking state of the locking block (541) and the first locking groove (722).

8. A cutting device according to claim 7, characterized in that: The first lever (810) is located to the left of the second lever (820). The first lever (810) is provided with an L-shaped third sliding rod (641), and the second lever (820) is provided with an L-shaped fourth sliding rod (642). The cutting device also includes an interlocking unit located in the second mounting cavity; the second mounting cavity includes a sixth inner cavity (741) located along the width direction of the sealing machine body (100), and the interlocking unit includes an interlocking component (643) located in the sixth inner cavity (741). The interlocking component (643) is located below the first lever (810) and the second lever (820), and a seventh compression spring (648) is provided between the right side wall of the interlocking component (643) and the inner wall of the sixth inner cavity (741). The lower end of the interlocking component (643) is provided with a first interlocking groove (811) and a second interlocking groove (821); the upper end of the right side wall of the first interlocking groove (811) is recessed to the right to form a second interlocking groove (1011); the lower end of the right side wall of the first interlocking groove (811) is inclined from top to bottom to the right to form a third guide slope (1012); the right side wall of the second interlocking groove (821) is a fourth guide slope (1021) that is inclined from top to bottom to the right. The first lever (810) is used to push the third guide slope (1012) by driving the third sliding rod (641) to move to the second locking groove (1011) when moving upward. The interlocking member (643) is used to move to the left under the action of the seventh compression spring (648) to realize the locking state of the first lever (810) and the second locking groove (1011). The locking state of the first lever (810) and the second locking groove (1011) restricts the position of the first lifting rod (610) in the height direction. The second lever (820) is used to push the fourth guide ramp (1021) by driving the fourth sliding rod (642) to press the interlock (643) to the right when moving upward, and the first lever (810) is moved downward by the second compression spring (710) when the interlock (643) moves to the right.

9. A food bag sealing machine, characterized in that: Includes a cutting device as described in any one of claims 1-8.

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