A film cutting device of a tape packing machine

Abstract

A kind of film cutting device of strip packing machine, it is related to strip packing machine equipment and its supporting equipment technical field.The film cutting device of strip packing machine includes knife groove assembly, hobbing assembly, transmission and drive device, hobbing assembly is arranged in the lower side of knife groove assembly, and is connected transmission respectively, double-sided bearing seat is arranged between knife groove assembly and transmission, knife groove assembly is connected transmission by passing through the bearing in double-sided bearing seat, drive device is connected another bearing, single-sided bearing seat is arranged between hobbing assembly and transmission, hobbing assembly is connected transmission by passing through the bearing in single-sided bearing seat, drive device drives transmission to rotate, knife groove is provided on knife groove assembly, to drive hobbing assembly to rotate in knife groove.Transmission is arranged between drive device and hobbing assembly, when changing tool, drive device does not need to be disassembled, simple and fast, double-sided bearing seat is arranged between knife groove assembly and transmission, even in the case that film material is tensioned, also can not affect normal work of drive device.

Description

Technical Field

[0001] A film-cutting device for a strip packaging machine relates to the technical field of strip packaging machine equipment and its supporting materials. Background Technology

[0002] A strip packaging machine is a production equipment that can process continuously supplied film material into strip packaging bags. Because it can continuously process and form strip packaging bags, and has high production efficiency and strong adaptability to working conditions, it has extremely wide applications in many fields such as food and medicine.

[0003] During the normal operation of the strip packaging machine, the film-cutting motor at the film-cutting station is directly connected to the roller cutter to cut the film. However, the motor needs to be disassembled when changing the cutter, which is cumbersome and affects production. To avoid this, the film-cutting motor is connected to the cutter groove roller, and the roller cutter below is driven by a transmission device to cut the film. However, the film is stretched taut during the film-pulling station of the strip packaging machine, which increases the friction between the film and the cutter groove roller, affecting the operation of the film-cutting motor and thus affecting the cutting of the film. At the same time, the cutter groove at the film-cutting station is a V-shaped design with a large opening. The roller cutter cuts the film between the V-shaped grooves, but the waste edges on both sides of the film often bend and get stuck in the cutter groove, making it impossible for the roller cutter to cut the waste edges. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a film cutting device for a strip packaging machine, which indirectly connects the drive device with the blade groove assembly and the roller assembly, so as not to affect the operation of the drive device and not to disassemble the drive device when changing blades.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: The film cutting device of the strip packaging machine includes a cutting groove assembly, a roller assembly, a transmission device, and a drive device. The roller assembly is located on the lower side of the cutting groove assembly. The roller assembly and the cutting groove assembly are respectively connected to the transmission device. A double-sided bearing seat is provided between the cutting groove assembly and the transmission device. The cutting groove assembly passes through one bearing in the double-sided bearing seat and connects to the transmission device. The drive device is connected to the other bearing. A single-sided bearing seat is provided between the roller assembly and the transmission device. The roller assembly passes through the bearing in the single-sided bearing seat and connects to the transmission device. The drive device drives the transmission device to rotate. The cutting groove assembly is provided with a cutting groove, thereby driving the roller assembly to rotate in the cutting groove.

[0006] Preferably, the grooving assembly includes a grooving roller, a first grooving plate, a second grooving plate, and a third grooving plate. One end of the grooving roller is connected to a bearing inside a double-sided bearing housing. The first grooving plate is located at the end of the grooving roller away from the double-sided bearing housing. The third grooving plate is located at the end of the grooving roller close to the double-sided bearing housing. The second grooving plate is located between the first grooving plate and the third grooving plate.

[0007] Preferably, the transmission device includes a first gear and a second gear, the drive device passes through the first gear and connects to another bearing in the double-sided bearing housing, the hobbing assembly passes through the bearing in the single-sided bearing housing and connects to the second gear, and the first gear and the second gear mesh with each other.

[0008] Preferably, the driving device is a motor, and the motor spindle passes through the first gear and connects to another bearing in the double-sided bearing housing.

[0009] Preferably, the first cutting groove rotating plate protrudes outward to form a first mating boss, and the first mating boss is provided with a first engaging groove. The two ends of the second cutting groove rotating plate protrude outward to form second mating bosses. The second mating boss at one end is provided with a second engaging convex shaft, and the second mating boss at the other end is provided with a second engaging groove. The third cutting groove rotating plate protrudes outward to form a third mating boss, and the third mating boss is provided with a third engaging convex shaft. The second engaging convex shaft of the second cutting groove rotating plate adjacent to the first cutting groove rotating plate is disposed in the first engaging groove. The second engaging convex shafts of the second cutting groove rotating plates in the middle part are sequentially disposed in the second engaging grooves of the preceding second cutting groove rotating plates. The third engaging convex shaft of the third cutting groove rotating plate is disposed in the second engaging groove of the preceding second cutting groove rotating plate.

[0010] Preferably, the second mating boss fits into the first mating boss, forming a cutting groove between the first cutting groove rotating plate and the adjacent second cutting groove rotating plate. The second mating bosses of the adjacent second cutting groove rotating plates fit into each other, forming a cutting groove between the two second cutting groove rotating plates. The third mating boss fits into the second mating boss, forming a cutting groove between the third cutting groove rotating plate and the adjacent second cutting groove rotating plate. The cross-section of the cutting groove is rectangular.

[0011] Preferably, the width of the cutting groove is 5.5~6.5mm.

[0012] Preferably, the hobbing assembly includes a hobbing roller shaft and hobbing cutters, with the hobbing cutters spaced apart on the hobbing roller shaft. The hobbing roller shaft is connected to a transmission device, which drives the hobbing cutters to rotate within the cutter groove.

[0013] Compared with existing technologies, the beneficial effects of this technical solution are:

[0014] This invention indirectly connects the drive unit and the roller cutter assembly by setting up a transmission device, eliminating the need to disassemble the drive unit during cutter changes, making the process simple and quick. Double-sided bearing seats are installed between the cutter groove assembly and the transmission device, and the two bearings also indirectly connect the cutter groove assembly and the drive unit. Even when the film is stretched, increasing the friction between the film and the cutter groove rollers, it will not affect the normal operation of the drive unit in driving the roller cutter assembly, thus improving the stability of the film cutting station of the strip packaging machine. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the film cutting device of a strip packaging machine according to the present invention.

[0016] Figure 2 This is a schematic diagram of the knife groove assembly of this utility model.

[0017] The components include: 1. Double-sided bearing housing; 2. Single-sided bearing housing; 3. Cutting groove roller; 4. First cutting groove rotating plate 401, first mating boss 402, first engaging groove; 5. Second cutting groove rotating plate 501, second mating boss 502, second engaging convex shaft 503, second engaging groove; 6. Third cutting groove rotating plate 601, third mating boss 602, third engaging convex shaft; 7. First gear; 8. Second gear; 9. Motor; 10. Cutting groove; 11. Hob roller; 12. Hob; 13. Frame. Detailed Implementation

[0018] Figures 1-2 This is the preferred embodiment of the present invention, which is described below in conjunction with the appendix. Figures 1-2 The present invention will be further described below.

[0019] Reference Figure 1 The film cutting device of this packaging machine includes a frame 13, a cutter groove assembly, a roller cutter assembly, a transmission device, and a drive device. The cutter groove assembly, roller cutter assembly, transmission device, and drive device are mounted on the frame 13. The roller cutter assembly is located below the cutter groove assembly and is connected to the transmission device. A double-sided bearing seat 1 is provided between the cutter groove assembly and the transmission device. The cutter groove assembly passes through one bearing in the double-sided bearing seat 1 and connects to the transmission device. The drive device connects to the other bearing. A single-sided bearing seat 2 is provided between the roller cutter assembly and the transmission device. The roller cutter assembly passes through the bearing in the single-sided bearing seat 2 and connects to the transmission device. The drive device drives the transmission device to rotate, thereby driving the roller cutter assembly to rotate.

[0020] Specifically, the cutter groove assembly includes a cutter groove roller 3, a first cutter groove rotating plate 4, a second cutter groove rotating plate 5, and a third cutter groove rotating plate 6. The first cutter groove rotating plate 4 is located at the end of the cutter groove roller 3 away from the double-sided bearing seat 1, the third cutter groove rotating plate 6 is located at the end of the cutter groove roller 3 close to the double-sided bearing seat 1, and multiple second cutter groove rotating plates 5 are located between the first cutter groove rotating plate 4 and the third cutter groove rotating plate 6.

[0021] The hobbing assembly includes a hobbing roller 11 and hobs 12. Multiple hobs 12 are spaced apart on the hobbing roller 11, and eccentric shafts are fixedly connected to both ends of the hobbing roller 11. The eccentric shafts drive the hobbing roller 11, thereby causing the hobs 12 to disengage.

[0022] The transmission device of this utility model includes a first gear 7 and a second gear 8. The driving device is a motor 9. The main shaft of the motor 9 passes through the first gear 7 and connects to a bearing in the double-sided bearing seat 1. The cutter roller 3 connects to another bearing in the double-sided bearing seat 1. The hob roller 11 passes through the bearing in the single-sided bearing seat 2 and connects to the second gear 8. The first gear 7 and the second gear 8 mesh with each other.

[0023] Motor 9 drives the roller shaft 11 to rotate through the meshing of the first gear 7 and the second gear 8, thereby cutting the material. The groove roller 3 is not directly connected to motor 9; instead, it is connected by two bearings within the double-sided bearing housing 1. During shearing, the material is located between the groove assembly and the roller assembly. Therefore, when the material is compressed, the friction between it and the groove roller 3 increases. If the groove roller 3 were directly connected to motor 9, it would place a heavy load on motor 9, potentially causing slow operation or stalling.

[0024] Furthermore, the motor 9 of this invention is not directly connected to the roller shaft 11, but drives the roller shaft 11 to rotate through the meshing of the first gear 7 and the second gear 8. When changing the blade, there is no need to disassemble the motor 9, which simplifies the structure and enhances the stability during film cutting.

[0025] Reference Figure 2 One end of the cylindrical first cutting groove rotating plate 4 protrudes outward to form a cylindrical first mating boss 401. The first mating boss 401 is recessed inward to form a cylindrical first engaging groove 402. Both ends of the second cutting groove rotating plate 5 protrude outward to form second mating bosses 501. A cylindrical second engaging convex shaft 502 protrudes outward from one end of the second mating boss 501, and a cylindrical second engaging groove 503 is recessed inward from the other end of the second mating boss 501. A cylindrical third mating boss 601 protrudes outward from the third cutting groove rotating plate 6, and a cylindrical third engaging convex shaft 602 protrudes outward from the third mating boss 601. The diameter of the engaging convex shaft is the same as that of the engaging groove, which is smaller than the diameter of the mating boss and smaller than the diameter of the cutting groove rotating plate body.

[0026] The second engaging convex shaft 502 of the second cutting groove rotating plate 5 adjacent to the first cutting groove rotating plate 4 is disposed in the first engaging groove 402. The second engaging convex shaft 502 of the middle part of the second cutting groove rotating plate 5 is disposed in the second engaging groove 503 of the preceding second cutting groove rotating plate 5. The third engaging convex shaft 602 of the third cutting groove rotating plate 6 is disposed in the second engaging groove 503 of the preceding second cutting groove rotating plate 5. Both sides are fixed by bolts. The first cutting groove rotating plate 4, the second cutting groove rotating plate 5 and the third cutting groove rotating plate 6 are provided with a through hole for the cutting groove roller 3 to pass through. The cutting groove roller 3 is disposed in the through hole and is rotatably mounted on the frame 13 at both ends by bearings.

[0027] The second mating boss 501 fits into the first mating boss 401 to form an annular groove 10. The second mating boss 501 in the middle part fits into the previous second mating boss 501 to form an annular groove 10. The third mating boss 601 fits into the second mating boss 501 to form an annular groove 10. The hob 12 is rotatably disposed in the groove 10. The number of hobs 12 corresponds to the number of grooves 10.

[0028] The width of the cutter groove 10 directly affects the removal of the hob 12. If it is too wide, the resulting waste edge is large, causing material waste. If it is too narrow, the cutter will directly hit the edge of the cutter groove 10 during removal, affecting the removal process. Experiments have shown that the cutter groove 10 of this invention has a rectangular cross-sectional shape and a width of 6mm. This effectively reduces the waste edge and improves the material utilization rate without affecting the removal process.

[0029] Work process:

[0030] Motor 9 drives the first gear 7 to rotate, which in turn drives the hob roller 11 connected to the second gear 8 to rotate, thereby cutting the material in the cutter groove 10. After the material is cut, the eccentric shaft is rotated to drive the hob roller 11, thereby causing the hob 12 mounted on the hob roller 11 to disengage from the cutter groove 10 for operations such as tool replacement.

[0031] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. A film-cutting device for a strip packaging machine, characterized in that: The device includes a cutter groove assembly, a hob assembly, a transmission device, and a drive device. The hob assembly is located on the lower side of the cutter groove assembly. The hob assembly and the cutter groove assembly are respectively connected to the transmission device. A double-sided bearing seat (1) is provided between the cutter groove assembly and the transmission device. The cutter groove assembly passes through one bearing in the double-sided bearing seat (1) and connects to the transmission device. The drive device is connected to the other bearing. A single-sided bearing seat (2) is provided between the hob assembly and the transmission device. The hob assembly passes through the bearing in the single-sided bearing seat (2) and connects to the transmission device. The drive device drives the transmission device to rotate. The cutter groove assembly is provided with a cutter groove (10), thereby driving the hob assembly to rotate in the cutter groove (10).

2. The film cutting device for a strip packaging machine according to claim 1, characterized in that: The grooving assembly includes a grooving roller (3), a first grooving rotating plate (4), a second grooving rotating plate (5), and a third grooving rotating plate (6). The grooving roller (3) is connected to a bearing inside the double-sided bearing housing (1). The first grooving rotating plate (4) is located at the end of the grooving roller (3) away from the double-sided bearing housing (1). The third grooving rotating plate (6) is located at the end of the grooving roller (3) close to the double-sided bearing housing (1). The second grooving rotating plate (5) is located between the first grooving rotating plate (4) and the third grooving rotating plate (6).

3. The film cutting device for a strip packaging machine according to claim 2, characterized in that: The transmission device includes a first gear (7) and a second gear (8). The drive device passes through the first gear (7) and connects to another bearing in the double-sided bearing housing (1). The hobbing assembly passes through the bearing in the single-sided bearing housing (2) and connects to the second gear (8). The first gear (7) and the second gear (8) mesh with each other.

4. The film cutting device for a strip packaging machine according to claim 3, characterized in that: The driving device is a motor (9), and the main shaft of the motor (9) passes through the first gear (7) and connects to another bearing in the double-sided bearing housing (1).

5. The film cutting device for a strip packaging machine according to claim 2, characterized in that: The first cutting groove rotating plate (4) protrudes outward to form a first mating boss (401), and the first mating boss (401) is provided with a first engaging groove (402). The two ends of the second cutting groove rotating plate (5) protrude outward to form a second mating boss (501). The second mating boss (501) at one end is provided with a second engaging convex shaft (502), and the second mating boss (501) at the other end is provided with a second engaging groove (503). The third cutting groove rotating plate (6) protrudes outward to form a third mating boss (601), and the third mating convex shaft (601) is provided with a first engaging groove (402). The platform (601) is provided with a third engaging convex shaft (602). The second engaging convex shaft (502) of the second cutting groove rotating plate (5) adjacent to the first cutting groove rotating plate (4) is set in the first engaging groove (402). The second engaging convex shaft (502) of the middle part of the second cutting groove rotating plate (5) is set in the second engaging groove (503) of the previous second cutting groove rotating plate (5). The third engaging convex shaft (602) of the third cutting groove rotating plate (6) is set in the second engaging groove (503) of the previous second cutting groove rotating plate (5).

6. The film cutting device for a strip packaging machine according to claim 5, characterized in that: The second mating boss (501) fits into the first mating boss (401) to form a groove (10) between the first cutting groove rotating plate (4) and the adjacent second cutting groove rotating plate (5). The second mating boss (501) of the adjacent second cutting groove rotating plate (5) fits into the second cutting groove rotating plate (5) to form a groove (10) between the two second cutting groove rotating plates (5). The third mating boss (601) fits into the second mating boss (501) to form a groove (10) between the third cutting groove rotating plate (6) and the adjacent second cutting groove rotating plate (5). The cross-section of the groove (10) is rectangular.

7. A film-cutting device for a strip packaging machine according to claim 1 or 6, characterized in that: The width of the groove (10) is 5.5~6.5mm.

8. The film cutting device for a strip packaging machine according to claim 1, characterized in that: The hobbing assembly includes a hobbing roller (11) and a hob (12). The hobs (12) are spaced apart on the hobbing roller (11). The hobbing roller (11) is connected to a transmission device, which drives the hobs (12) to rotate within the cutter groove (10).

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