A cutting device for packaging bag processing

Abstract

The present invention is applicable to the technical field of packaging bag processing equipment, and provides a cutting device for packaging bag processing; it comprises: a base, a heat sealing mechanism and a cutting mechanism arranged on the base; a tensioning component arranged inside the mounting seat; the tensioning component comprises a first rotating rod arranged on both sides inside the mounting seat and a driven sliding rod elastically slidingly arranged on the mounting seat along the tensioning direction of the two first rotating rods; an unlocking component arranged at the output end of the first lifting mechanism, the unlocking component is used to release the connection between the first lifting mechanism and the mounting seat; and a heat sealing strip arranged at the output ends of the two first lifting mechanisms, the two heat sealing strips cooperate with each other to perform heat sealing. The present invention arranges the mounting seat, the first rotating rod and the tensioning block, etc., so that the packaging bag is tensioned in the width direction during the heat sealing process, so that there is no stacking position at the heat sealing position of the packaging bag, thereby ensuring the quality of the heat sealing.

Description

Technical Field

[0001] The invention relates to the technical field of packaging bag processing equipment, in particular to a cutting device for packaging bag processing. Background Art

[0002] Packaging bags refer to bags used to package various items, which make it convenient to transport and store goods during the production and circulation process. They are widely used in daily life and industrial production. During the production and processing of packaging bags, cutting is required to manufacture packaging bags of different sizes and thicknesses. Therefore, cutting devices for packaging bag processing are widely used in the packaging bag processing industry.

[0003] The packaging bag cutting process includes a heat sealing process. In the heat sealing process, there is often a problem that some packaging bags are overlapped during the heat sealing process due to the lack of tension in the width direction of the packaging bags, resulting in poor heat sealing quality. In order to solve this problem, a cutting device for packaging bag processing is proposed. Summary of the invention

[0004] The object of the present invention is to provide a cutting device for processing packaging bags to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A cutting device for processing packaging bags, comprising: a base, a heat sealing mechanism and a cutting mechanism arranged on the base;

[0007] Wherein, the heat sealing mechanism comprises two mounting seats that can move closer to or farther from each other; the mounting seats are arranged on the base through a first lifting mechanism;

[0008] A tensioning member disposed inside the mounting seat;

[0009] The tensioning component includes first rotating rods arranged on both sides of the mounting seat and a driven sliding rod elastically slidably arranged on the mounting seat along the tensioning direction of the two first rotating rods; the first end of the first rotating rod is elastically rotatably mounted on the mounting seat, and the second end of the first rotating rod is elastically rotatably mounted with a tensioning block; a driving wheel is fixedly mounted on the first end of the first rotating rod, and the driving wheel abuts on the driven sliding rod; a driving wedge block is fixedly mounted on the driven sliding rod, and the driving wedge block abuts on the mating sliding rod, and a resistance block is arranged on the mating sliding rod;

[0010] An unlocking component provided at an output end of the first lifting mechanism, the unlocking component being used to release the connection between the first lifting mechanism and the mounting seat;

[0011] A guide mechanism is used to guide the lifting and lowering of the mounting seat and to position the mounting seat after the tensioning block is tensioned;

[0012] And, the heat sealing strips are arranged at the output ends of the two first lifting mechanisms, and the two heat sealing strips cooperate with each other to perform heat sealing.

[0013] As a further solution of the present invention: the driving wheel is an eccentric wheel or a cam.

[0014] As a further solution of the present invention: a second elastic member is sleeved on the outer side of the driven sliding rod, and two ends of the second elastic member are respectively fixedly mounted on the driven sliding rod and the mounting seat.

[0015] As a further solution of the present invention: the unlocking assembly includes a lever and an elastic locking rod; the middle position of the lever is elastically rotatably arranged inside the mounting seat; the first end of the elastic locking rod is connected to the lever, and the second end of the elastic locking rod is arranged in a locking groove on the side wall of the output end of the first lifting mechanism; the first end of the elastic locking rod is provided with a matching pin shaft, and the matching pin shaft is slidably arranged in a long hole on the lever, and the end of the lever away from the elastic locking rod is arranged on the sliding track of the driven sliding rod.

[0016] As a further solution of the present invention: the guide mechanism includes a guide sleeve and a guide positioning member; the guide positioning member is fixedly installed on the base, the guide sleeve is fixedly installed on the mounting seat, the guide sleeve sliding sleeve is arranged on the outside of the guide positioning member, and a plurality of one-way locking grooves are arranged in an array along the sliding direction on the outside of the guide sleeve, a locking rod is arranged inside one of the one-way locking grooves, and the locking rod is elastically slidably arranged in the elastic locking rod.

[0017] As a further solution of the present invention: an unlocking mechanism for driving the guide sleeve to unlock is further provided between the locking rod and the first lifting mechanism.

[0018] As a further solution of the present invention: the unlocking mechanism includes racks arranged on both sides of the first lifting mechanism and a one-way gear rotatably installed on the guide positioning member, and the guide sleeve is elastically connected to the base; the one-way gear is used to engage with the rack, and a pull rope is connected to the one-way gear, and the pull rope is connected to the locking rod at one end away from the one-way gear.

[0019] As a further solution of the present invention: the one-way gear includes a central shaft, an intermediate ring rotatably mounted on the outside of the central shaft, and a gear ring mounted on the outside of the intermediate ring; the pull rope is wound around the central shaft, and the central shaft is rotatably mounted on the guide positioning member; the intermediate ring and the central shaft are connected via a ratchet structure, a plurality of second rotating rods are arranged in an array outside the intermediate ring, the second rotating rods are elastically rotatably mounted on the intermediate ring, the middle position of the second rotating rod is arranged on the intermediate ring via a suction mechanism, a plurality of mating protrusions are fixedly arranged inside the gear ring, and the mating protrusions abut against the second rotating rods.

[0020] As a further solution of the present invention: the suction mechanism includes a first suction block and a second suction block, the first suction block is fixedly installed in the middle position of the second rotating rod, the second suction block is fixedly installed on the middle ring, and the second suction block and the first suction block are suctioned to each other.

[0021] As a further solution of the present invention: the cutting mechanism includes a second lifting mechanism fixedly mounted on the base and a cutting knife arranged at the output end of the second lifting mechanism, and a cutting table cooperating with the cutting knife is also arranged on the base, and the cutting table is fixedly mounted on the base.

[0022] Compared with the prior art, the present invention has the following beneficial effects: the present invention provides a mounting seat, a first rotating rod and a tensioning block, etc., so that the packaging bag is tensioned in the width direction during the heat sealing process, so that there is no stacking position at the heat sealing position of the packaging bag, thereby ensuring the quality of the heat sealing;

[0023] At the same time, by setting a driven slide bar, a driving wedge block, a matching slide bar and a resistance block, the middle position of the packaging bag is positioned to ensure the heat sealing quality, while avoiding excessive tensioning of the packaging bag by the matching tensioning block. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Schematic diagram of the structure of the cutting device for packaging bag processing Figure 1 .

[0025] Figure 2 It is a schematic diagram of the structure of the heat sealing mechanism in the cutting device for packaging bag processing.

[0026] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0027] Figure 4 This is a schematic diagram of the structure of a one-way gear in a cutting device for packaging bag processing.

[0028] Figure 5 This is a schematic diagram of the matching structure of the tensioning block in the cutting device for packaging bag processing.

[0029] Figure 6 for Figure 5 Enlarged view of point B in the middle.

[0030] In the figure: 1-base, 2-mounting seat, 3-first lifting mechanism, 4-guide positioning member, 5-guide sleeve, 6-first rotating rod, 7-tensioning block, 8-driving wheel, 9-driven sliding rod, 10-driving wedge block, 11-matching sliding rod, 12-contact block, 13-lever, 14-elastic locking rod, 15-heat sealing strip, 16-one-way locking groove, 17-locking rod, 18-first elastic member, 19-pull rope, 20-one-way gear , 21- rack, 22- tension rod, 23- matching tension rod, 24- pressing ball, 25- matching block, 26- first magnet, 27- second magnet, 28- second lifting mechanism, 29- cutting table, 30- cutting knife, 31- center axis, 32- middle ring, 33- tooth ring, 34- ratchet, 35- matching groove, 36- second rotating rod, 37- first adsorption block, 38- second adsorption block, 39- matching convex point. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Example 1

[0033] See also Figure 1 to Figure 6 In Example 1 of the present invention, a structural diagram of a cutting device for packaging bag processing provided by the embodiment of the present invention includes: a base 1, a heat sealing mechanism and a cutting mechanism arranged on the base 1; wherein the heat sealing mechanism includes two mounting seats 2 that can approach or move away from each other; the mounting seats 2 are arranged on the base 1 through a first lifting mechanism 3; specifically, the two ends of the first lifting mechanism 3 are respectively installed on the base 1 and the mounting seat 2.

[0034] A tensioning component is arranged inside the mounting seat 2; the tensioning component includes a first rotating rod 6 arranged on both sides inside the mounting seat 2 and a driven slide 9 elastically slidingly arranged on the mounting seat 2 along the tensioning direction of the two first rotating rods 6; the first end of the first rotating rod 6 is elastically rotatably mounted on the mounting seat 2, and the second end of the first rotating rod 6 is elastically rotatably mounted with a tensioning block 7; the first end of the first rotating rod 6 can be rotatably mounted on the mounting seat 2 through a torsion spring, and a driving wheel 8 is fixedly mounted on the first end of the first rotating rod 6, and the driving wheel 8 abuts against the driven slide 9; a driving wedge 10 is fixedly mounted on the driven slide 9, and the driving wedge 10 abuts against the matching slide 11. The tensioning block 7 is elastically rotatably mounted on the first rotating rod 6 through a torsion spring. A resisting block 12 is arranged on the matching slide 11.

[0035] An unlocking component provided at the output end of the first lifting mechanism 3, the unlocking component being used to release the connection between the first lifting mechanism 3 and the mounting seat 2;

[0036] And, a guide mechanism, used to guide the lifting and lowering of the mounting seat 2, and used to tension the tensioning block 7 to complete the positioning of the mounting seat 2;

[0037] The heat sealing strips 15 are arranged at the output ends of the two first lifting mechanisms 3, and the two heat sealing strips 15 cooperate with each other to perform heat sealing. Both sides of the heat sealing strips 15 are provided with mounting seats 2.

[0038] Specifically, the packaging bag passes through the heat sealing mechanism and the cutting mechanism in sequence, and the first lifting mechanisms 3 on both sides drive the mounting seats 2 on both sides to approach each other, and the tensioning blocks 7 on the first rotating rods 6 on the two matching mounting seats 2 contact each other, so that the packaging bag is set between the two tensioning blocks 7, and the mounting seats 2 continue to approach, so that the two matching tensioning blocks 7 move outward, and then the packaging bag is tensioned. As the tensioning block 7 rotates with the first rotating rod 6, the driving wheel 8 on the first rotating rod 6 drives the driven slide bar 9 to slide, and the driven slide bar 9 drives the matching slide bar 11 to slide through the driving wedge block 10, and the friction blocks 12 on the matching slide bars 11 on the two mounting seats 2 approach each other, and then the middle position of the packaging bag is positioned, and at the same time, the friction block 12 prevents the two mounting seats 2 from continuing to approach each other, so as to avoid excessive tensioning of the packaging bag by the tensioning block 7; at the same time, the unlocking component releases the connection between the first lifting mechanism 3 and the mounting seat 2, and the mounting seat 2 is maintained in a tensioned state; the first lifting mechanism 3 continues to approach with its own heat sealing strips 15 for heat sealing, and at the same time, the cutting mechanism cuts the lifting port position on the packaging bag.

[0039] The driving wheel 8 is fixedly sleeved on the rotating shaft at the end of the first rotating rod 6, the rotating shaft is fixedly mounted on the first rotating rod 6, and the rotating shaft can be rotatably mounted on the mounting seat 2 by bearings. In this way, the driving wheel 8 can rotate with the first rotating rod 6.

[0040] The driving wheel 8 may be an eccentric wheel or a cam.

[0041] A second elastic member is sleeved on the outer side of the driven slide bar 9 , and two ends of the second elastic member are respectively fixedly mounted on the driven slide bar 9 and the mounting seat 2 , thereby realizing the elastic sliding setting of the driven slide bar 9 .

[0042] The matching slide bar 11 is elastically slidably arranged on the mounting seat 2, so that it can be ensured that when the matching slide bar 11 loses the driving force of the driving wedge block 10, it can automatically return to the initial position.

[0043] See also Figure 2As a preferred embodiment of the present invention, in order to realize that when the mounting seat 2 is tensioned, the first lifting mechanism 3 stops driving the mounting seat 2 to move, therefore, the unlocking assembly includes a lever 13 and an elastic locking rod 14; the middle position of the lever 13 is elastically rotatably arranged inside the mounting seat 2; the first end of the elastic locking rod 14 is connected to the lever 13, and the second end of the elastic locking rod 14 is arranged in a locking groove on the side wall of the output end of the first lifting mechanism 3, and the first end of the elastic locking rod 14 is provided with a matching pin shaft, and the matching pin shaft is slidably arranged in the long hole on the lever 13, and the end of the lever 13 away from the elastic locking rod 14 is arranged on the sliding track of the driven slide bar 9. Specifically, when the tensioning block 7 on the mounting seat 2 completes the tensioning of the packaging bag, the driven slide bar 9 contacts the lever 13, the lever 13 rotates, and the lever 13 drives the elastic locking rod 14 to withdraw from the locking groove on the first lifting mechanism 3, and then contacts the mounting seat 2 and the first lifting mechanism 3. At this time, the first lifting mechanism 3 continues to extend and cannot drive the two mounting seats 2 to approach each other, thereby avoiding excessive tensioning of the packaging bag. The elastic locking rod 14 is an elastic telescopic rod structure.

[0044] The lever 13 can be rotatably mounted inside the mounting seat 2 via a torsion spring.

[0045] See also Figure 2 and 3 As a preferred embodiment of the present invention, in order to lock the position of the mounting seat 2 when the first lifting mechanism 3 is unlocked from the mounting seat 2, the guide mechanism includes a guide sleeve 5 and a guide positioning member 4; the guide positioning member 4 is fixedly mounted on the base 1, the guide sleeve 5 is fixedly mounted on the mounting seat 2, the guide sleeve 5 is slidably sleeved on the outside of the guide positioning member 4, and a plurality of one-way locking grooves 16 are arrayed on the outside of the guide sleeve 5 along the sliding direction, a locking rod 17 is arranged inside one of the one-way locking grooves 16, and the locking rod 17 is elastically slidably arranged in the elastic locking rod 14. With such arrangement, when the mounting seat 2 is lowered along with the first lifting mechanism 3, the first elastic member 18 slides through the plurality of one-way locking grooves 16 in sequence, and when the sliding stops, the locking rod 17 is locked in one of the one-way locking grooves 16, thereby locking the position of the mounting seat 2 and preventing the two mounting seats 2 from moving away from each other.

[0046] The cross-section of the one-way lock groove 16 is triangular, and includes an inclined section, a horizontal section, and an entrance section, wherein the horizontal section is at the bottom, and the inclined section is used to guide the lock rod 17 so that the lock rod 17 can slide through the one-way lock groove 16 in one direction. The entrance section can be vertically arranged.

[0047] The first elastic member 18 is sleeved on the outer side of the locking rod 17, and the two ends of the first elastic member 18 are respectively fixedly mounted in the locking rod 17 and the internal mounting grooves of the guide positioning member 4. In this way, the locking rod 17 is elastically slidably mounted on the guide positioning member 4. The locking rod 17 can be horizontally slidably mounted.

[0048] In order to enable the guide sleeve 5 to return to the initial position along with the mounting seat 2 when sealing is completed, an unlocking mechanism for driving the guide sleeve 5 to unlock is further provided between the locking rod 17 and the first lifting mechanism 3 .

[0049] See also Figure 1 to Figure 6 As a preferred embodiment of the present invention, the unlocking mechanism includes racks 21 arranged on both sides of the first lifting mechanism 3 and a one-way gear 20 rotatably mounted on the guide positioning member 4, and the guide sleeve 5 is elastically connected to the base 1; the one-way gear 20 is used to engage with the rack 21, and a pull rope 19 is connected to the one-way gear 20, and the end of the pull rope 19 away from the one-way gear 20 is connected to the locking rod 17. In this way, when the first lifting mechanism 3 rises, the rack 21 meshes with the one-way gear 20, driving the one-way gear 20 to rotate. The one-way gear 20 causes the pull rope 19 to curl onto the one-way gear 20, so that the pull rope 19 pulls the locking rod 17 to shrink toward the inside of the guide positioning member 4, and then contacts the locking of the guide sleeve 5. Under the elastic action of the guide sleeve 5, the mounting seat 2 moves upward, so that the two first rotating rods 6 on the mounting seat 2 return to their initial state under the elastic action, and the driving wheel 8 releases the lock on the driven slide rod 9; the elastic locking rod 14 returns to its initial state, and at the same time, the one-way gear 20 and the rack 21 are disengaged. When the locking groove passes through the elastic locking rod 14 during the upward movement of the mounting seat 2, the elastic locking rod 14 is inserted into the locking groove, the mounting seat 2 is connected to the first lifting mechanism 3, and the first lifting mechanism 3 stops shrinking.

[0050] like Figure 4As shown, as a preferred embodiment of the present invention, the one-way gear 20 includes a central shaft 31, an intermediate ring 32 rotatably sleeved on the outer side of the central shaft 31, and a toothed ring 33 sleeved on the outer side of the intermediate ring 32; the pull rope 19 is wound around the central shaft 31, and the central shaft 31 is rotatably mounted on the guide positioning member 4; the intermediate ring 32 is connected to the central shaft 31 through a ratchet structure, and a plurality of second rotating rods 36 are arranged in an array outside the intermediate ring 32, and the second rotating rods 36 are elastically rotatably mounted on the intermediate ring 32, and the middle position of the second rotating rod 36 is arranged on the intermediate ring 32 through a suction mechanism, and a plurality of matching protrusions 39 are fixedly arranged inside the toothed ring 33. , the mating convex point 39 abuts against the second rotating rod 36. In this way, when the one-way gear 20 is meshed with the rack 21, the rack 21 drives the one-way gear 20 to rotate. When the one-way gear 20 moves the lock rod 17 to retract through the pull rope 19, when the retraction is completed, the lock rod 17 needs to be maintained in a retracted state, so that the guide sleeve 5 can drive the mounting seat 2 to return to the initial position. Therefore, the rack 21 and the one-way gear 20 are still in meshing state. Since the central shaft 31 is connected to the lock rod 17, the central shaft 31 cannot rotate with the gear ring 33. Therefore, the middle position of the second rotating rod 36 overcomes the suction force of the suction mechanism, so that the gear ring 33 and the intermediate ring 32 are relatively deflected. So that the lock rod 17 is maintained in a retracted state.

[0051] like Figure 4 As shown, as a preferred embodiment of the present invention, the suction mechanism includes a first suction block 37 and a second suction block 38, the first suction block 37 is fixedly mounted in the middle of the second rotating rod 36, the second suction block 38 is fixedly mounted on the middle ring 32, the second suction block 38 and the first suction block 37 are mutually suctioned, and the second suction block 38 and the first suction block 37 can be electromagnets. In this way, the middle of the second rotating rod 36 is conveniently suctioned on the middle ring 32.

[0052] like Figure 4 As shown in FIG. 1 , as a preferred embodiment of the present invention, the ratchet structure includes a matching groove 35 arranged in a circumferential array inside the intermediate ring 32 and a ratchet pawl 34 elastically rotatably arranged on the central shaft 31, and one end of the ratchet pawl 34 is arranged in the matching groove 35. One-way transmission is achieved. The ratchet structure is a prior art and will not be described in detail here.

[0053] like Figure 5 and 6As shown, as a preferred embodiment of the present invention, in order to avoid wrinkles in the packaging bag at the pressing position, a matching mechanism is arranged between the two matching tensioning blocks 7; the matching mechanism includes a tensioning rod 22, a matching tensioning rod 23, a pressing ball 24, a matching block 25, a first magnet 26 and a second magnet 27; the first magnet 26 and the second magnet 27 are arranged to be attracted to each other, the first magnet 26 is arranged in a spherical shape, and the second magnet 27 is provided with a ball groove that cooperates with the surface of the first magnet 26; the first magnet 26 and the second magnet 27 are respectively arranged on the two tensioning blocks 7; the tensioning rod 22 and the matching tensioning rod 23 are respectively arranged on the two tensioning blocks 7, and the tensioning rod 22 and the matching tensioning rod 23 are respectively elastically rotatably installed on the two tensioning blocks 7; the clamping ball 24 is fixedly installed on the tensioning rod 22, and the matching block 25 is fixedly installed on the matching tensioning rod 23. The clamping ball 24 is set to be spherical, and the matching block 25 is provided with a ball groove that cooperates with the clamping ball 24; the tensioning rod 22 and the matching tensioning rod 23 are used to tension the packaging bags on both sides of the first magnet 26 and the second magnet 27, so as to avoid the packaging bags that are squeezed and wrinkled by the first magnet 26 and the second magnet 27 from being pulled up and restored, thereby ensuring the tensioning quality. When the two mounting seats 2 are close to each other, the first magnet 26 and the second magnet 27 position the packaging bag, and then the tensioning block 7 moves outward to tension the packaging bag. At the same time, the tensioning rod 22 and the matching tensioning rod 23 are also squeezed, the pressing ball 24 and the matching block 25 collide, and the pressing ball 24 and the matching block 25 also move outward to tension the packaging bag in the clamping position, thereby ensuring the tensioning quality.

[0054] The surface of the pressing ball 24 is provided with dot-shaped protrusions.

[0055] The tensioning rod 22 and the matching tensioning rod 23 can be rotatably mounted on the tensioning block 7 via a torsion spring.

[0056] like Figure 1 As shown, as a preferred embodiment of the present invention, the cutting mechanism includes a second lifting mechanism 28 fixedly mounted on the base 1 and a cutting knife 30 arranged at the output end of the second lifting mechanism 28, and the base 1 is also provided with a cutting table 29 cooperating with the cutting knife 30, and the cutting table 29 is fixedly mounted on the base 1, so that when the cutting knife 30 descends, the buckle of the packaging bag on the cutting table 29 is cut.

[0057] The second lifting mechanism 28 and the first lifting mechanism 3 can be configured as hydraulic cylinders or electric telescopic cylinders.

[0058] The elastic member mentioned in the present invention may be a coil spring, which is easy to implement.

[0059] The working principle of the present invention is:

[0060] The packaging bag passes through the heat sealing mechanism and the cutting mechanism in sequence, and the first lifting mechanisms 3 on both sides drive the mounting seats 2 on both sides to approach each other, and the tensioning blocks 7 on the first rotating rods 6 on the two matching mounting seats 2 collide with each other, and the packaging bag is set between the two tensioning blocks 7. The first magnet 26 and the second magnet 27 position the packaging bag, and then the tensioning block 7 moves outward to tension the packaging bag. At the same time, the tensioning rod 22 and the matching tensioning rod 23 are also squeezed, and the pressing ball 24 and the matching block 25 collide, and the pressing ball 24 and the matching block 25 also move outward to tension the packaging bag at the clamped position; and the mounting seats 2 continue to approach, so that the two matching tensioning blocks 7 move outward, thereby tensioning the packaging bag. As the first rotating rod 6 rotates, the tensioning block 7 The driving wheel 8 on the rotating rod 6 drives the driven slide bar 9 to slide, and the driven slide bar 9 drives the matching slide bar 11 to slide through the driving wedge block 10, and the abutment blocks 12 on the matching slide bars 11 on the two mounting seats 2 approach each other, and then the middle position of the packaging bag is positioned. At the same time, the abutment block 12 prevents the two mounting seats 2 from continuing to approach each other, so as to prevent the tensioning block 7 from over-tensioning the packaging bag; at the same time, the unlocking component releases the connection between the first lifting mechanism 3 and the mounting seat 2, and the mounting seat 2 is maintained in a tensioned state; the rack 21 of the mounting seat 2 is meshed with the one-way gear 20 during the continued descent process. Since the one-way gear 20 is a one-way gear, the one-way gear 20 will not rotate with the rack 21 at this time, so the locking rod 17 is abutted in a one-way locking groove 16 at this time to lock the position of the mounting seat 2;

[0061] The first lifting mechanism 3 continues to bring its own heat sealing strips 15 closer for heat sealing, and at the same time the cutting mechanism cuts the lifting position of the packaging bag; when the heat sealing and cutting are completed, the first lifting mechanism 3 contracts, and the rack 21 drives the one-way gear 20 to rotate. The one-way gear 20 drives the locking rod 17 to contract through the pull rope 19. When the contraction is completed, the locking rod 17 needs to be maintained in the contracted state so that the guide sleeve 5 can drive the mounting seat 2 to return to the initial position, which is convenient for the next heat sealing and cutting.

[0062] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0063] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A cutting device for packaging bag processing, characterized in that: include: A base (1), a heat sealing mechanism and a cutting mechanism arranged on the base (1); Wherein, the heat sealing mechanism comprises two mounting seats (2) that can move closer to or farther away from each other; the mounting seats (2) are arranged on the base (1) via a first lifting mechanism (3); A tensioning component arranged inside the mounting seat (2); The tensioning component comprises a first rotating rod (6) arranged on both sides of the inside of the mounting seat (2) and a driven sliding rod (9) elastically slidably arranged on the mounting seat (2) along the tensioning direction of the two first rotating rods (6); the first end of the first rotating rod (6) is elastically rotatably mounted on the mounting seat (2), and the second end of the first rotating rod (6) is elastically rotatably mounted with a tensioning block (7); a driving wheel (8) is fixedly mounted on the first end of the first rotating rod (6), and the driving wheel (8) abuts against the driven sliding rod (9); a driving wedge block (10) is fixedly mounted on the driven sliding rod (9), and the driving wedge block (10) abuts against the matching sliding rod (11), and the matching sliding rod (11) is provided with a contact block (12); An unlocking component provided at an output end of the first lifting mechanism (3), the unlocking component being used to release the connection between the first lifting mechanism (3) and the mounting seat (2); A guide mechanism, used to guide the lifting and lowering of the mounting seat (2), and used to position the mounting seat (2) after the tensioning block (7) is tensioned; And, heat sealing strips (15) are arranged at the output ends of the two first lifting mechanisms (3), and the two heat sealing strips (15) cooperate with each other to perform heat sealing.

2. A cutting device for packaging bag processing according to claim 1, characterized in that: The driving wheel (8) is an eccentric wheel or a cam.

3. A cutting device for packaging bag processing according to claim 1, characterized in that: A second elastic member is sleeved on the outside of the driven sliding rod (9), and two ends of the second elastic member are respectively fixedly mounted on the driven sliding rod (9) and the mounting seat (2).

4. A cutting device for packaging bag processing according to claim 1, characterized in that: The unlocking assembly comprises a lever (13) and an elastic locking rod (14); the lever (13) is elastically rotatably arranged in the middle position inside the mounting seat (2); the first end of the elastic locking rod (14) is connected to the lever (13), the second end of the elastic locking rod (14) is arranged in a locking groove on the side wall of the output end of the first lifting mechanism (3), the first end of the elastic locking rod (14) is provided with a matching pin shaft, the matching pin shaft is slidably arranged in a long hole on the lever (13), and the end of the lever (13) away from the elastic locking rod (14) is arranged on the sliding track of the driven sliding rod (9).

5. A cutting device for packaging bag processing according to claim 1, characterized in that: The guide mechanism comprises a guide sleeve (5) and a guide positioning member (4); the guide positioning member (4) is fixedly mounted on the base (1), the guide sleeve (5) is fixedly mounted on the mounting seat (2), the guide sleeve (5) is slidably mounted on the outside of the guide positioning member (4), a plurality of one-way locking grooves (16) are arranged in an array along a sliding direction on the outside of the guide sleeve (5), a locking rod (17) is arranged inside one of the one-way locking grooves (16), and the locking rod (17) is elastically slidably arranged in the elastic locking rod (14).

6. A cutting device for packaging bag processing according to claim 5, characterized in that: An unlocking mechanism for driving the guide sleeve (5) to unlock is also provided between the locking rod (17) and the first lifting mechanism (3).

7. A cutting device for packaging bag processing according to claim 6, characterized in that: The unlocking mechanism comprises racks (21) arranged on both sides of the first lifting mechanism (3) and a one-way gear (20) rotatably mounted on the guide positioning member (4); the guide sleeve (5) is elastically connected to the base (1); the one-way gear (20) is used to mesh with the rack (21); a pull rope (19) is connected to the one-way gear (20); and one end of the pull rope (19) away from the one-way gear (20) is connected to the locking rod (17).

8. A cutting device for packaging bag processing according to claim 7, characterized in that: The one-way gear (20) comprises a central shaft (31), an intermediate ring (32) rotatably mounted on the outside of the central shaft (31), and a toothed ring (33) mounted on the outside of the intermediate ring (32); the pull rope (19) is wound around the central shaft (31), and the central shaft (31) is rotatably mounted on the guide positioning member (4); the intermediate ring (32) and the central shaft (31) are connected via a ratchet structure; a plurality of second rotating rods (36) are arranged in an array outside the intermediate ring (32); the second rotating rods (36) are elastically rotatably mounted on the intermediate ring (32); the middle position of the second rotating rod (36) is arranged on the intermediate ring (32) via an attraction mechanism; a plurality of matching protrusions (39) are fixedly arranged inside the toothed ring (33); the matching protrusions (39) abut against the second rotating rods (36).

9. A cutting device for packaging bag processing according to claim 8, characterized in that: The suction mechanism comprises a first suction block (37) and a second suction block (38); the first suction block (37) is fixedly mounted at a middle position of the second rotating rod (36); the second suction block (38) is fixedly mounted on the middle ring (32); the second suction block (38) and the first suction block (37) are arranged to be suctioned to each other.

10. A cutting device for packaging bag processing according to any one of claims 1 to 9, characterized in that: The cutting mechanism comprises a second lifting mechanism (28) fixedly mounted on the base (1) and a cutting knife (30) arranged at the output end of the second lifting mechanism (28); the base (1) is also provided with a cutting table (29) cooperating with the cutting knife (30); the cutting table (29) is fixedly mounted on the base (1).

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