Sectional type cutter shaft structure of reciprocating type packaging machine

Abstract

The utility model discloses a sectional type cutter shaft structure of a reciprocating type packaging machine, which relates to the technical field of packaging machines, and comprises a lower transverse sealing mechanism, an upper transverse sealing mechanism is arranged above the lower transverse sealing mechanism in parallel at intervals, the lower transverse sealing mechanism comprises a lower cutter holder, a lower sealing assembly is fixedly arranged on the lower cutter holder, and the lower cutter holder is provided with an upper sealing assembly. The upper transverse sealing mechanism comprises an upper tool apron, the left end and the right end of the upper tool apron are detachably provided with lower tool shaft frames, the left end and the right end of the upper tool apron are detachably provided with upper tool shaft frames, the upper tool shaft frames are connected with the lower tool shaft frames through connecting assemblies, and the bottom of the upper tool apron is elastically provided with an upper sealing assembly. According to the design scheme, the sectional structural design is adopted in the transverse sealing mechanism, the cutter shaft frames are installed at the two ends of the upper cutter holder and the two ends of the lower cutter holder, only the cutter shaft frames on the two sides need to be precisely machined in the production process, the machining cost is effectively reduced, damaged parts can be independently replaced in the maintenance process, and therefore the maintenance cost of equipment is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging machines, in particular to a segmented cutter shaft structure of a reciprocating packaging machine. Background Art

[0002] In the existing packaging machine equipment, during end sealing, the upper sealing knife and the lower sealing knife clamp against each other and stay briefly to complete end sealing, or the upper sealing knife and the lower sealing knife complete end sealing during the clamping process.

[0003] CN 105819033 A discloses a reciprocating end sealing device of a pillow packaging machine, which includes a gear driving mechanism, a rotary driving mechanism and an end sealing mechanism connected in sequence. The end sealing mechanism includes an upper end sealing assembly and a lower end sealing assembly with opposite rotation directions. The upper end sealing assembly and the lower end sealing assembly move along an oval track driven by the rotary driving mechanism. The rotary driving mechanism includes a driving shaft connected to the gear driving mechanism, a slider fixedly connected to the driving shaft, a guide rod penetrating through the slider and capable of linearly moving relative to it. A rotary seat placed outside the bottom of the slider is fixedly connected to the bottom end of the guide rod, and a guide rod seat placed outside the top of the slider is fixedly connected to the top end of the guide rod. The upper end sealing assembly and the lower end sealing assembly of the above packaging machine move along an oval track driven by the rotary driving mechanism, so that the end sealing assembly will move synchronously with the packaging bag, thereby prolonging the sealing time of the packaging bag and being beneficial to improving the sealing effect.

[0004] However, both the upper end sealing body and the lower end sealing body of the above packaging machine are integrally cast and formed. During the production and manufacturing process, the whole end sealing body needs to be precisely machined, which results in a high processing cost of the end sealing assembly. And after the end sealing body is damaged, it needs to be replaced as a whole, resulting in a high maintenance cost of the equipment. Summary of the Utility Model

[0005] In order to overcome the above-mentioned defects existing in the prior art, the utility model provides a segmented cutter shaft structure of a reciprocating packaging machine.

[0006] The technical solution adopted by the utility model to solve its technical problems is: a segmented cutter shaft structure of a reciprocating packaging machine, which includes a lower cross-sealing mechanism. An upper cross-sealing mechanism is arranged parallel and spaced above the lower cross-sealing mechanism. The lower cross-sealing mechanism includes a lower knife seat, a lower sealing component is fixedly installed on the lower knife seat, lower knife shaft frames are detachably installed at the left and right ends of the lower knife seat. The upper cross-sealing mechanism includes an upper knife seat, upper knife shaft frames are detachably installed at the left and right ends of the upper knife seat. The upper knife shaft frames and the lower knife shaft frames are mutually connected through a connecting component, and an upper sealing component is elastically installed at the bottom of the upper knife seat.

[0007] Further, the upper sealing assembly includes a seal seat. Guide rods are fixedly installed at the left and right ends of the seal seat. A bushing is slidably installed on the guide rods. The bushing is fixedly installed at the top of the upper knife seat. A spring is arranged between the seal seat and the upper knife seat. The spring is sleeved on the guide rods. A threaded portion is provided at the top end of the guide rod. A limit nut is fitted on the threaded portion. A locking ring is provided at the top end of the limit nut. The locking ring is fitted on the threaded portion.

[0008] Further, a first heat insulation pad is fixedly installed at the bottom of the seal seat. A first seal is fixedly installed on the first heat insulation pad. A cutter is movably installed inside the first seal. A tool holder is fixedly installed at the top of the cutter. Optical rods are fixedly installed at the left and right ends at the top of the tool holder. The optical rods are slidably installed on the upper knife seat. A cylinder is fixedly installed at the top of the upper knife seat. The power output shaft of the cylinder is fixedly connected to the tool holder.

[0009] Further, the lower sealing assembly includes a second seal. A second heat insulation pad is fixedly installed at the bottom of the second seal. The second heat insulation pad is fixedly installed on the lower knife seat. A cutting groove corresponding to the cutter is provided on the second seal.

[0010] Further, the connection assembly includes a guide rail. A rail cushion block is fixedly installed at the bottom end of the guide rail. The rail cushion block is fixedly installed at the rear side of the lower knife shaft frame. A rail slider is movably installed on the guide rail. The rail slider is fixedly installed at the rear side of the upper knife shaft frame.

[0011] Further, mounting holes are provided on the left and right side walls of the upper knife shaft frame and the lower knife shaft frame.

[0012] The beneficial effect of the present utility model is that the design scheme of the present utility model adopts a segmented structure design for the transverse sealing mechanism. Knife shaft frames are installed at both ends of the upper / lower knife seats. During the production and manufacturing process, only the two side knife shaft frames need to be precisely machined, thereby effectively reducing the processing cost. And during maintenance, damaged components can be replaced separately, which can effectively reduce the maintenance cost of the equipment. Description of the Drawings

[0013] The present utility model will be further described below with reference to the drawings and embodiments.

[0014] Figure 1 is a three-dimensional structure schematic diagram of the present utility model;

[0015] Figure 2 is a front view of the present utility model;

[0016] Figure 3 is a left view of the present utility model;

[0017] Figure 4 is Figure 3 a schematic cross-sectional structure diagram in the A-A direction in

[0018] In the figure: 1. Lower tool holder, 2. Lower tool shaft support, 3. Upper tool holder, 4. Upper tool shaft support, 5. Sealer seat, 6. Guide rod, 61. Threaded part, 7. Bush, 8. Spring, 9. Limit nut, 10. Locking ring, 11. First heat insulation pad, 12. First sealer, 13. Cutting tool, 14. Tool rest, 15. Smooth rod, 16. Cylinder, 17. Second sealer, 171. Cutting slot, 18. Second heat insulation pad, 19. Guide slide rail, 20. Guide rail pad, 21. Guide rail slider, 22. Mounting hole. Specific embodiments

[0019] In order to more clearly illustrate the technical solutions of the present invention, the present invention will be further described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only one embodiment of the present invention. For those of ordinary skill in the art, without creative efforts, other embodiments obtained based on this drawing and embodiment all fall within the protection scope of the present invention.

[0020] According to Figures 1-4 As shown, a segmented tool shaft structure of a reciprocating packaging machine includes a lower cross-sealing mechanism. Above the lower cross-sealing mechanism, an upper cross-sealing mechanism is arranged in parallel at intervals. The lower cross-sealing mechanism includes a lower tool holder 1. A lower sealing assembly is fixedly installed on the lower tool holder 1. The left and right ends of the lower tool holder 1 are detachably installed with lower tool shaft supports 2 through bolts. The upper cross-sealing mechanism includes an upper tool holder 3. The left and right ends of the upper tool holder 3 are detachably installed with upper tool shaft supports 4 through bolts. The upper tool shaft support 4 and the lower tool shaft support 2 are connected to each other through a connecting component. The bottom of the upper tool holder 3 is elastically installed with an upper sealing assembly.

[0021] In this embodiment, the upper sealing assembly includes a sealer seat 5. Guide rods 6 are fixedly installed at the left and right ends of the sealer seat 5. A bush 7 is slidably installed on the guide rod 6. The bush 7 is fixedly installed on the top of the upper tool holder 3 through bolts. A spring 8 is arranged between the sealer seat 5 and the upper tool holder 3. The spring 8 is sleeved on the guide rod 6. The top of the guide rod 6 is provided with a threaded part 61. A limit nut 9 is installed on the threaded part 61 through thread fit. The top of the limit nut 9 is provided with a locking ring 10. The locking ring 10 is installed on the threaded part 61 through thread fit. Under the action of the spring 8, the sealer seat 5 is pushed downward. The limit nut 9 abuts against the bush 7 to limit the sealer seat 5, and the locking ring 10 is tightened to prevent the limit nut 9 from loosening.

[0022] In this embodiment, a first heat insulation pad 11 is fixedly installed at the bottom of the seal seat 5. A first seal 12 is fixedly installed on the first heat insulation pad 11. A cutter 13 is movably installed inside the first seal 12. A tool holder 14 is fixedly installed at the top of the cutter 13. The left and right ends of the top of the tool holder 14 are fixedly installed with optical rods 15. The optical rods 15 are slidably installed on the upper tool seat 3. A cylinder 16 is fixedly installed at the top of the upper tool seat 3. The power output shaft of the cylinder 16 is fixedly connected to the tool holder 14. After the packaging bag is heated and sealed by the seal, the cylinder 16 drives the tool holder 14 to slide downward along the optical rods 15, and the cutter 13 cuts a tearing line on the packaging bag.

[0023] In this embodiment, the lower sealing assembly includes a second seal 17. A second heat insulation pad 18 is fixedly installed at the bottom of the second seal 17. The second heat insulation pad 18 is fixedly installed on the lower tool seat 1. A cutting slot 171 corresponding to the cutter 13 is provided on the second seal 17. A heating rod is inserted into the seal, and the seal is heated by the heating rod. When the seal clamps the packaging bag, the packaging bag is heated and melted for sealing.

[0024] In this embodiment, the connecting assembly includes a guide rail 19. A rail spacer 20 is fixedly installed at the bottom end of the guide rail 19. The rail spacer 20 is fixedly installed at the rear side of the lower tool shaft frame 2. A rail slider 21 is movably installed on the guide rail 19. The rail slider 21 is fixedly installed at the rear side of the upper tool shaft frame 4. Installation holes 22 are formed on the left and right side walls of the upper tool shaft frame 4 and the lower tool shaft frame 2. A rotating shaft is fitted and installed in the installation hole 22. The tool shaft frame is eccentrically installed on the turntable through the rotating shaft. Under the drive of the turntable, the packaging bag is sealed and cut through the cooperation of the first seal 12 and the second seal 17.

[0025] When the present utility model is in use, the tool shaft frame plays a positioning role. Therefore, only the tool shaft frame is precisely machined during the production and manufacturing process. The tool seat and the seal seat are both integrally formed by stamping, thereby effectively reducing the processing cost. And during maintenance, the damaged parts can be replaced separately. All parts are fixed by bolts, which is convenient for disassembly and assembly, and can effectively reduce the maintenance cost of the equipment.

[0026] The above embodiments are only exemplary embodiments of the present utility model and are not used to limit the present utility model. The protection scope of the present utility model is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements to the present utility model within the essence and protection scope of the present utility model, and such modifications or equivalent replacements should also be regarded as falling within the protection scope of the present utility model.

Claims

1. A segmented knife shaft structure of a reciprocating packaging machine, comprising a lower transverse sealing mechanism, an upper transverse sealing mechanism is arranged above the lower transverse sealing mechanism in parallel and at intervals, characterized in that: The lower transverse sealing mechanism comprises a lower knife seat (1), on which a lower sealing assembly is fixedly mounted, and lower knife shaft frames (2) are detachably mounted at left and right ends of the lower knife seat (1); the upper transverse sealing mechanism comprises an upper knife seat (3), on which upper knife shaft frames (4) are detachably mounted at left and right ends of the upper knife seat (3), and the upper knife shaft frames (4) are connected to the lower knife shaft frames (2) via a connecting assembly, and an upper sealing assembly is elastically mounted at the bottom of the upper knife seat (3).

2. The segmented knife shaft structure of a reciprocating packaging machine according to claim 1, characterized in that: The upper sealing assembly comprises a sealer seat (5), guide rods (6) are fixedly installed at the left and right ends of the sealer seat (5), a shaft sleeve (7) is slidably installed on the guide rod (6), and the shaft sleeve (7) is fixedly installed on the top of the upper knife seat (3), a spring (8) is arranged between the sealer seat (5) and the upper knife seat (3), and the spring (8) is sleeved on the guide rod (6), and the top end of the guide rod (6) is provided with a threaded portion (61), and a limit nut (9) is installed on the threaded portion (61), and the top end of the limit nut (9) is provided with a locking ring (10), and the locking ring (10) is installed on the threaded portion (61).

3. The segmented knife shaft structure of a reciprocating packaging machine according to claim 2, characterized in that: A first heat insulating pad (11) is fixedly mounted on the bottom of the sealer seat (5), a first sealer (12) is fixedly mounted on the first heat insulating pad (11), a cutter (13) is movably mounted inside the first sealer (12), a tool holder (14) is fixedly mounted on the top of the cutter (13), a polished rod (15) is fixedly mounted on the left and right ends of the top of the tool holder (14), the polished rod (15) is slidably mounted on the upper tool seat (3), a cylinder (16) is fixedly mounted on the top of the upper tool seat (3), and a power output shaft of the cylinder (16) is fixedly connected to the tool holder (14).

4. The segmented knife shaft structure of a reciprocating packaging machine according to claim 3, characterized in that: The lower sealing assembly comprises a second sealer (17), a second thermal insulation pad (18) is fixedly mounted on the bottom of the second sealer (17), the second thermal insulation pad (18) is fixedly mounted on the lower knife seat (1), and the second sealer (17) is provided with a cutting groove (171) corresponding to the cutting knife (13).

5. The segmented knife shaft structure of a reciprocating packaging machine according to claim 1, characterized in that: The connecting assembly comprises a guide rail (19), a guide rail pad (20) is fixedly mounted on the bottom end of the guide rail (19), the guide rail pad (20) is fixedly mounted on the rear side of the lower knife shaft frame (2), and a guide rail slider (21) is movably mounted on the guide rail (19), and the guide rail slider (21) is fixedly mounted on the rear side of the upper knife shaft frame (4).

6. The segmented knife shaft structure of a reciprocating packaging machine according to claim 5, characterized in that: The upper knife shaft frame (4) and the lower knife shaft frame (2) are both provided with mounting holes (22) on the left and right side walls.

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