Translation single-tool swing arm structure

Abstract

The translation single-tool swing arm structure comprises a mounting frame, a swing frame and a transverse cutter assembly, the swing frame is driven through a power shaft and an eccentric wheel, and the cutter assembly achieves elliptic curve motion in combination with the fulcrum effect of a fulcrum shaft. Meanwhile, the structure has an adjustable design, such as height and position adjustment of the fulcrum shaft, length replacement of the connecting rod and the like, so as to adapt to different size requirements. The technical effects that the cutting precision and stability are improved, and the structural suitability and operation flexibility are enhanced are achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of mechanical cutting equipment, in particular to a translation single-knife swing arm structure. BACKGROUND

[0002] As a convenient and efficient washing product, the production efficiency and product quality of laundry condensation beads directly affect market competitiveness. In the production process of laundry condensation beads, the film cutting process is one of the key links. At present, with the improvement of consumers' requirements for product quality, the improvement of film cutting technology has become an important direction to improve the overall quality of laundry condensation beads. The progress of film cutting technology not only can improve the sealing performance of the product, but also can improve the appearance quality, thereby enhancing the market attraction of the product.

[0003] In the prior art, in order to realize the film cutting operation of laundry condensation beads, a mode of cooperation between a die cavity roller and a hob is usually adopted. Specifically, a plurality of die cavities arranged in a rectangular array are arranged on the surface of the die cavity roller, and after injection molding, a packaging film is covered by a film sticking device to complete preliminary packaging. Subsequently, the hob rotating synchronously with the die cavity roller cuts the film in the transverse direction to cut out a row of laundry condensation beads.

[0004] However, the above prior art has obvious defects in actual application. Taking the hob cutting as an example, since the hob only makes a single rotary motion, the contact angle of the cutting track and the film is limited, which causes the cutting surface to be prone to burr or tearing phenomenon. Especially under high speed working condition, the dynamic contact pressure distribution of the hob and the film is uneven, which further aggravates the problem of incomplete cutting, seriously affecting the packaging sealing performance and the appearance quality of the product. SUMMARY

[0005] In order to improve the cutting quality, the present application provides a translation single-knife swing arm structure.

[0006] The translation single-knife swing arm structure provided by the present application adopts the following technical scheme:

[0007] A translation single-knife swing arm structure, comprising a mounting frame, a swing frame arranged in the mounting frame, and a transversely arranged cutter assembly, a fixed seat and a support are longitudinally arranged in the mounting frame, the fixed seat is rotationally connected with a power shaft parallel to the cutter assembly, and an eccentric wheel is arranged at the end of the power shaft; one end of the swing frame is rotationally connected to the end of the power shaft through the eccentric wheel, and the other end of the swing frame is connected with the cutter assembly; the support is provided with a support shaft parallel to the power shaft, the swing frame is provided with a sliding groove slidably connected with the end of the support shaft, the extension direction of the sliding groove coincides with the direction of the line connecting the two ends of the swing frame, and the swing frame drives the cutter assembly to make an elliptical curve motion under the driving action of the power shaft and the eccentric wheel and the fulcrum action of the support shaft.

[0008] By adopting the above technical scheme, the cooperation of the eccentric wheel and the power shaft can drive the swing frame to realize periodic swinging, and the fulcrum effect of the supporting shaft on the swing frame makes the cutter assembly move along an elliptical curve track. This movement mode can effectively adjust the contact angle between the cutter and the film, avoid the burr or tearing problem caused by the single rotary movement of the traditional hob, and significantly improve the cutting quality. At the same time, the elliptical curve movement helps to optimize the dynamic contact pressure distribution of the cutter under high-speed working conditions, thereby improving the packaging sealing performance and improving the appearance quality of the product.

[0009] Preferably, the end of the supporting shaft is provided with a bearing, and the end of the supporting shaft is slidingly connected to the sliding groove through the bearing.

[0010] By adopting the above technical scheme, the supporting shaft end is provided with a bearing and slidingly connected to the sliding groove, which can significantly reduce the friction resistance between the supporting shaft and the sliding groove, and ensure that the swing frame moves more smoothly under the driving of the power shaft and the eccentric wheel. At the same time, the introduction of the bearing improves the wear resistance and service life of the structure, further ensures the accuracy of the cutter assembly in the elliptical curve movement, thereby effectively improving the cutting quality and reducing the occurrence of burr or tearing phenomenon.

[0011] Preferably, the mounting frame comprises a bottom plate and two vertical plates arranged on both sides of the bottom plate and opposite to each other, and the fixing seat and the support are arranged on the surface of the bottom plate, and the distance between the two vertical plates is adjustable.

[0012] By adopting the above technical scheme, the mounting frame is composed of a bottom plate and two vertical plates with adjustable distance, so that the fixing seat and the support can be stably arranged on the bottom plate. The adjustable distance between the two vertical plates provides flexible adaptability for the overall structure. When a larger size mold cavity roller needs to be matched, the distance between the two vertical plates can be increased according to the actual demand to adapt to the cutter assembly with larger transverse length, which is beneficial to improve the versatility and operation convenience of the equipment.

[0013] Preferably, the support can be adjusted in longitudinal position at the base, and the supporting shaft can be adjusted in height position at the support.

[0014] By adopting the above technical scheme, the support can be adjusted in longitudinal position, so that the whole device can adapt to swing frames or cutter assemblies of different lengths, thereby meeting the cutting needs of products of various specifications. The supporting shaft can be adjusted in height position, which further optimizes the movement track of the swing frame, ensures that the cutter assembly maintains the best contact angle with the film during the cutting process, effectively reduces the burr and tearing phenomenon, and improves the cutting quality. In addition, this adjustable design also enhances the flexibility and applicability of the equipment, reduces the cost and time consumption caused by replacing parts.

[0015] Preferably, the swing frame comprises two swing arms symmetrically arranged on both sides of the fixed base and a connecting rod for connecting the cutter assembly, the connecting rod is transversely connected between the two swing arms, and the length direction of the cutter assembly is consistent with the length direction of the connecting rod.

[0016] By adopting the above technical scheme, the swing frame is composed of two swing arms symmetrically arranged on both sides of the fixed base and a connecting rod for connecting the cutter assembly, the connecting rod is transversely connected between the two swing arms, and the length direction of the cutter assembly is consistent with the length direction of the connecting rod. The structure design makes the swing frame drive the cutter assembly to realize more stable and accurate elliptical curve motion under the driving action of the power shaft and the eccentric wheel, thereby effectively improving the motion stability of the cutter assembly during cutting and reducing the shaking phenomenon of the cutter assembly in high-speed motion. In addition, the symmetrically arranged swing arm design helps to uniformly distribute the force and avoid the problems of cutter assembly deviation or uneven wear caused by uneven force, further improving the cutting quality and equipment service life.

[0017] Preferably, the connecting rod and the swing arm are detachable, and the swing frame is adapted to the cutter assembly of corresponding length by replacing the connecting rod of different length.

[0018] By adopting the above technical scheme, the connecting rod and the swing arm are designed to be detachable, so that the swing frame can replace the connecting rod of different length according to actual needs, thereby adapting to the cutter assembly of corresponding length. This design improves the flexibility and adaptability of the film cutting device, which can meet the installation requirements of different specifications of cutter assembly, and is suitable for thin film cutting tasks of various sizes.

[0019] Preferably, a plurality of connecting columns are arranged between the connecting rod and the cutter assembly, and the plurality of connecting columns are equally spaced along the length direction of the cutter assembly.

[0020] By adopting the above technical scheme, a plurality of connecting columns are arranged between the connecting rod and the cutter assembly, and the connecting columns are equally spaced along the length direction of the cutter assembly, which can enhance the overall structural stability of the cutter assembly, ensure that the blade is uniformly stressed when the cutter assembly performs elliptical curve motion, and reduce vibration and deviation. In the scheme, the power shaft, the eccentric wheel and the supporting shaft cooperatively drive the swing frame to drive the cutter assembly to move, and the arrangement of the connecting columns further optimizes the force transmission effect, improves the cutting precision and quality.

[0021] Preferably, the cutter assembly comprises two clamping plates arranged above and below and a blade clamped between the two clamping plates, and the blade is locked by locking the two clamping plates.

[0022] By adopting the technical scheme, the cutter assembly is composed of two clamping plates distributed above and below and a blade clamped between the two clamping plates, and the blade can be stably fixed by locking the clamping plates. The structure design makes the installation and replacement of the blade more convenient, and ensures that the blade remains stable during work, effectively avoiding cutting quality problems caused by loose blades. Combined with the driving action of the power shaft, the eccentric wheel and the swing frame, the cutter assembly can accurately perform an elliptical curve motion, thereby realizing efficient and high-quality cutting of the film, significantly reducing the burr and tearing phenomenon, and improving the packaging sealing performance and product appearance quality.

[0023] To sum up, the present application includes at least one of the following beneficial technical effects:

[0024] 1. By the cooperation of the eccentric wheel and the swing frame, the cutter assembly is driven to perform an elliptical curve motion, which can effectively change the contact angle of the cutter and the film, avoid burr or tearing phenomenon on the cut surface, and significantly improve the cutting quality;

[0025] 2. The swing frame realizes stable motion under the joint action of the power shaft and the support shaft, ensures that the cutter assembly maintains uniform dynamic contact pressure under high-speed working conditions, and improves the cut integrity;

[0026] 3. The structure design is compact and the motion trajectory is controllable, which adapts to the cutting film requirements of different specifications, enhances the versatility and flexibility of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a schematic diagram of the overall structure of a translation single-knife swing arm structure according to an embodiment of the present application.

[0028] Figure 2 is a schematic diagram of the structure after the vertical plate is hidden in a translation single-knife swing arm structure according to an embodiment of the present application.

[0029] Figure 3 is an exploded schematic diagram of a swing arm in a translation single-knife swing arm structure according to an embodiment of the present application.

[0030] BRIEF DESCRIPTION OF DRAWINGS: 1, mounting bracket; 11, bottom plate; 12, vertical plate; 13, fixed seat; 14, support; 141, vertical through slot; 142, longitudinal through slot; 2, power shaft; 21, eccentric wheel; 211, eccentric shaft; 3, main shaft; 4, transmission assembly; 5, swing frame; 51, swing arm; 52, connecting rod; 521, groove; 6, support shaft; 61, bearing; 62, through hole; 7, cutter assembly; 71, clamping plate; 72, blade; 8, sliding groove; 9, connecting column. DETAILED DESCRIPTION

[0031] The following will be described in detail in combination with the accompanying Figures 1-3 The present application will be further described in detail.

[0032] The embodiment of the present application discloses a translation single-knife swing arm structure, referring to Figure 1 and Figure 2 , comprising a mounting frame 1, a swing frame 5 arranged in the mounting frame 1 and a transversely arranged cutter assembly 7. Wherein, the mounting frame 1 is internally provided with longitudinally distributed fixing seats 13 and supports 14, the fixing seats 13 are rotationally connected with a power shaft 2 parallel to the cutter assembly 7, and the end of the power shaft 2 is provided with an eccentric wheel 21. One end of the swing frame 5 is rotationally connected to the end of the power shaft 2 through the eccentric wheel 21, and the other end of the swing frame 5 is connected with the cutter assembly 7. The support 14 is provided with a support shaft 6 parallel to the power shaft 2, and the swing frame 5 is provided with a sliding groove 8 slidably connected with the end of the support shaft 6, and the extension direction of the sliding groove 8 coincides with the direction of the line connecting the two ends of the swing frame 5. Wherein, the position of the power shaft 2 is higher than the position of the support shaft 6. Under the driving action of the power shaft 2 and the eccentric wheel 21 and the fulcrum action of the support shaft 6, the swing frame 5 drives the cutter assembly 7 to move in an elliptical curve, thereby realizing efficient cutting of the film and effectively reducing the cutting burr and tearing phenomenon.

[0033] Specifically, the mounting frame 1 serves as a support part of the whole structure, comprising a bottom plate 11 arranged transversely and two vertical plates 12 arranged on both sides of the bottom plate 11 and oppositely, the fixing seats 13 and the supports 14 are all mounted on the surface of the bottom plate 11, and the spacing of the two vertical plates 12 can be adjusted according to actual needs to adapt to different sizes of film cutting environment. The fixing seat 13 is used for mounting the power shaft 2, and a bearing structure can be arranged inside to reduce friction and improve power transmission efficiency. In the embodiment, the fixing seat 13 is also rotationally connected with a main shaft 3 parallel to the power shaft 2, the power shaft 2 and the main shaft 3 are distributed vertically, and the linkage purpose is realized through a transmission assembly 4. The transmission assembly 4 can specifically adopt two gears fixed coaxially with the power shaft 2 and the main shaft 3 respectively, and the transmission is realized through gear meshing, and the transmission assembly 4 can also adopt a synchronous belt mechanism. In addition, the main shaft 3 can be connected with a motor and other power elements outside the mounting frame 1, and under the driving of the power elements and the linkage action of the transmission assembly 4, the stable rotation purpose of the power shaft 2 is realized.

[0034] Referring to Figure 2 and Figure 3 , the swing frame 5 comprises two swing arms 51 symmetrically distributed on both sides of the fixing seat 13 and a connecting rod 52 for connecting the cutter assembly 7. Wherein, the connecting rod 52 is transversely connected between the two swing arms 51, and the length direction of the cutter assembly 7 is consistent with the length direction of the connecting rod 52. The material of the swing arm 51 can be selected from high-strength aluminum alloy or stainless steel and other materials to ensure its stability and durability in high-speed motion.

[0035] In the embodiment, the shaft center position of the eccentric wheel 21 can be fixedly connected with the shaft center position of the power shaft 2 through bolts or other fixing modes, one end of the swing arm 51 is rotationally connected with the eccentric shaft 211 of the eccentric wheel 21, and the specific shape of the eccentric wheel 21 can be circular, oval or other irregular shapes, as long as the eccentric movement of the swing frame 5 can be realized. The other end of the swing arm 51 is embedded in the groove 521 on the inner side of the connecting rod 52 and is detachably connected, so that the connecting rod 52 and the swing arm 51 are detachable, which can be realized by bolt locking or buckle connection and the like. In this way, different lengths of the connecting rod 52 can be replaced according to actual needs to adapt to the corresponding length of the cutter assembly 7.

[0036] In the embodiment, the two ends of the fulcrum 6 are provided with bearings 61, and the ends of the fulcrum 6 are slidably connected to the sliding groove 8 through the bearings 61. The length direction of the sliding groove 8 is consistent with the length direction of the swing arm 51, so that the sliding friction can be significantly reduced and the smoothness of movement can be improved. The support 14 adopts an L-shaped steel component, that is, the bottom plate 11, the support 14 and the fulcrum 6 can be directly locked into an integrated structure by bolts, or the positions of the support 14 and the fulcrum 6 can be adjusted to adapt to different working conditions. Specifically, the horizontal section of the support 14 is provided with a longitudinally extending longitudinal groove 142, and a threaded hole is formed in the surface of the bottom plate 11. The threaded hole is threadedly connected with the bolt after the bolt passes through the longitudinal groove 142, so that the longitudinal position of the support 14 can be adjusted and locked at the bottom plate. In addition, the vertical section of the support 14 is provided with a vertically extending vertical groove 141, and the fulcrum 6 is provided with a through hole 62. The through hole 62 is locked by the bolt after the bolt passes through the longitudinal groove 142 and the through hole 62, so that the height position of the fulcrum 6 can also be adjusted and locked at the support 14. This adjustable design can change the fulcrum position of the swing frame 5, so that the whole structure can adapt to different cutting requirements and working conditions.

[0037] In the embodiment, the cutter assembly 7 includes two upper and lower clamping plates 71 and a blade 72 clamped between the two clamping plates 71. The two clamping plates 71 are locked by bolts to achieve the locking purpose of the blade 72. The material of the clamping plate 71 can be hard plastic or metal material, and the blade 72 can be high-strength alloy steel or ceramic material to ensure the sharpness and durability of the cutting.

[0038] In order to improve the stability of the cutter assembly 7, a plurality of connecting columns 9 can be installed between the connecting rod 52 and the cutter assembly 7. The connecting columns 9 are equally spaced along the length direction of the cutter assembly 7. The shape of the connecting column 9 can be cylindrical or other stable structure, and the material can be selected from the same material as the connecting rod 52.

[0039] The implementation principle of the embodiment is as follows:

[0040] The main shaft 3 is driven to rotate by the motor, and then the eccentric wheel 21 is driven to rotate by the linkage action of the transmission assembly 4, so as to drive the swing frame 5 to periodically swing around the power shaft 2. Under the action of the fulcrum of the support shaft 6, the swing frame 5 drives the cutter assembly 7 to move along the elliptical curve track, that is, the cutter assembly 7 swings forward and backward and up and down along the fulcrum. This movement mode can make the cutter assembly 7 always maintain good contact with the film during cutting, avoiding the problems of cutting burr and tearing caused by limited contact angle in the traditional hob cutting mode. In addition, by adjusting the position of the support 14 and the support shaft 6, the movement track of the cutter assembly 7 can be further optimized, so as to realize precise cutting of films of different thickness and material. The overall structure is simple and reliable, easy to operate, and can significantly improve the film cutting quality and production efficiency.

[0041] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, any equivalent changes made on the basis of the structure, shape, principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A translational single knife swing arm structure, characterized by: The utility model provides a cutting device, including mounting frame (1), swing frame (5) and transverse cutting assembly (7) are arranged in mounting frame (1), longitudinal distribution is provided with fixed seat (13) and support (14) in mounting frame (1), fixed seat (13) is rotatably connected with the power shaft (2) parallel with cutting assembly (7), and the end of power shaft (2) is provided with eccentric wheel (21), one end of swing frame (5) is rotatably connected to the end of power shaft (2) through eccentric wheel (21), and the other end of swing frame (5) is connected with cutting assembly (7), support (14) is provided with support shaft (6) parallel with power shaft (2), swing frame (5) is provided with sliding slot (8) slidingly connected with the end of support shaft (6), the extension direction of sliding slot (8) coincides with the direction of line of both ends of swing frame (5), and swing frame (5) drives cutting assembly (7) to do elliptic curve motion under the driving action of power shaft (2) and eccentric wheel (21) and the fulcrum action under support shaft (6).

2. The translating single-crank swingarm structure of claim 1, wherein: The end of support shaft (6) is provided with bearing (61), and the end of support shaft (6) is slidingly connected in sliding slot (8) through bearing (61).

3. The translating single-crank swingarm structure of claim 1, wherein: The mounting frame (1) includes a bottom plate (11) and two vertical plates (12) arranged on both sides of the bottom plate (11) and opposite to each other, the fixed seat (13) and the support (14) are arranged on the surface of the bottom plate (11), and the distance between the two vertical plates (12) is adjustable.

4. The translating single-crank swingarm structure of claim 3, wherein: The support (14) can be adjusted in longitudinal position at the base, and the support shaft (6) can be adjusted in height position at the support (14).

5. The translating single-crank swingarm structure of claim 1, wherein: The swing frame (5) includes two swing arms (51) symmetrically arranged on both sides of the fixed seat (13) and a connecting rod (52) for connecting the cutting assembly (7), the connecting rod (52) is transversely connected between the two swing arms (51), and the length direction of the cutting assembly (7) is consistent with the length direction of the connecting rod (52).

6. The translating single-crank swingarm structure of claim 5, wherein: The connecting rod (52) and the swing arm (51) are detachable, and the swing frame (5) is adapted to the cutting assembly (7) of the corresponding length by replacing the connecting rod (52) of different lengths.

7. The translating single-crank swingarm structure of claim 6, wherein: A plurality of connecting columns (9) are arranged between the connecting rod (52) and the cutting assembly (7), and the plurality of connecting columns (9) are equally spaced along the length direction of the cutting assembly (7).

8. The translating single-crank swingarm structure of claim 1, wherein: The cutting assembly (7) includes two clamping plates (71) arranged in upper and lower positions and a blade (72) clamped between the two clamping plates (71), and the blade (72) is locked by locking the two clamping plates (71).

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