Knotter for small pendant

Abstract

The utility model relates to a small pendant knotter, which comprises an outer cam used for reducing the opening time of a rope clamping component which is arranged below the outer cam and can be opened after being contacted with the outer cam, and the outer cam comprises an outer peripheral surface which is an inclined circular truncated cone curved surface or an inclined elliptical truncated cone curved surface, a circular or elliptical bottom surface and a circular or elliptical top surface. The edge of the cross section of the peripheral surface is a non-circular curve, the motion trail of the rope clamping component is circular, the advancing distance of the rope clamping component on the peripheral surface is shortened due to the fact that the non-circular curve and the motion trail of the rope clamping component are not matched, and then the opening time of the rope clamping component is shortened. In this way, the problem that when the shrunk square grass bundling machine is directly manufactured and used for the small pendant knotting process, due to the fact that the movement track of the rope clamping component is matched with the shape of the boss, the rope clamping component is opened for a long time, and consequently thin rope type matter on a small pendant is prone to being separated from the rope clamping component is solved.

Description

Technical Field

[0001] The utility model relates to the field of knotters, in particular to a small hanging knotter. Background Art

[0002] In the field of small pendant manufacturing, it is often necessary to make knots or knots in the outer thin rope. Since these operations usually need to be done manually, the error rate is high and the efficiency is low. The automatic knotter has the advantages of fast, accurate and stable, which can greatly improve production efficiency and reduce error rate.

[0003] The existing knotters are mainly used in the agricultural field, such as the D-type straw bale knotter. The patent number of the authorization announcement on May 5, 2020 is CN210444918U, and the patent name is "Mechanical soft rope knotting device for square straw balers". The patent announces a mechanical soft rope knotting device for square straw balers, which includes a frame component, on which a fan-shaped cam disk, a rope-taking rod component, a worm shaft component, a rope clamp component and a knotting clamp shaft component are provided; it is characterized in that the fan-shaped cam disk is mounted on the frame component through a main shaft; the rope-taking rod component is mounted on the frame through a rope-taking rod shaft. However, if the structure of the above-mentioned square straw baler is directly changed by a reduction method and applied to the field of small pendant manufacturing, since the rope-like materials that need to be knotted on the small pendants are relatively thin, the clamping claws are easy to fall off the rope, and it is necessary to design a knotter that can prevent the thinner rope-like materials from falling off during the knotting process. Utility Model Content

[0004] In order to solve the problems existing in the above-mentioned prior art, the utility model aims to provide a small pendant knotter.

[0005] The utility model describes a small pendant knotter, comprising: an outer cam, wherein the outer cam is used to reduce the opening time of a rope clamp component which is arranged below the outer cam and can be opened after contacting the outer cam, the outer cam comprises an outer peripheral surface, a bottom surface and a top surface, the outer peripheral surface is an inclined frustum surface or an inclined elliptical cone surface, and the bottom surface and the top surface are circular or elliptical.

[0006] Preferably, the rope clamping component comprises a claw or a caliper, and the claw or the caliper can move along the outer peripheral surface and open or close during the movement.

[0007] Preferably, the clamping jaw comprises an upper clamping jaw, a first roller and a lower clamping jaw, and the caliper comprises an upper caliper, a second roller and a lower caliper, and both the first roller and the second roller can move along the outer peripheral surface and open or close the upper clamping jaw and the upper caliper during the movement.

[0008] Preferably, the small pendant knotter also includes the rope clamp component and a first transmission assembly; the rope clamp component is connected to the first transmission assembly, can move along the outer peripheral surface and open or close during the movement; the first transmission assembly includes a first transmission shaft and a first transmission gear, wherein the first transmission gear is arranged on the upper end of the first transmission shaft through a hole shaft to drive the rope clamp component to move, and the lower end of the first transmission shaft is connected to the rope clamp component.

[0009] Preferably, the small pendant knotter further comprises a toothed disc and a frame, the toothed disc is mounted on the frame, and a first gear and a second gear are provided on the toothed disc, and the first gear is meshed with the first transmission gear.

[0010] Preferably, the first transmission gear is mounted on the frame, the frame includes a sleeve structure, and the first transmission shaft is connected to the sleeve structure.

[0011] Preferably, the small pendant knotter also includes a rope clamp assembly, which includes a second transmission gear, a first worm, a first worm wheel, a rope clamp and a first connecting shaft. The second transmission gear is arranged on the end of the gear ring of the first worm away from the first worm through a hole-axis fit, and is meshed with the second gear. The first worm is meshed with the first worm wheel. The first worm wheel and the rope clamp are respectively provided with a first center hole and a second center hole. The first connecting shaft connects the first center hole and the second center hole, so as to enable the first worm wheel to drive the rope clamp to move.

[0012] Preferably, the rope clamp comprises a rope clamp disc assembly, a first rope clamp disc accessory and a second rope clamp disc accessory, the first rope clamp disc accessory and the second rope clamp disc accessory are connected to the frame and a cavity is formed therebetween, the rope clamp disc assembly is arranged between the first rope clamp disc accessory and the second rope clamp disc accessory, and the second center hole is arranged on the rope clamp disc assembly.

[0013] Preferably, the rope clamping disc assembly comprises two to three rope clamping discs connected in the middle, wherein at least one of the rope clamping discs is provided with a second center hole, the rope clamping disc is arranged in the cavity or separated from the cavity by the cavity wall, and a rope guide opening is provided on the edge of each rope clamping disc. Specifically, the rope guide opening may be one, two, three or four, and the rope guide opening is a notch.

[0014] Preferably, the small pendant knotter further comprises a rope-removing rod, which is connected to the frame and has at least one end provided with a rope-cutting knife for cutting and removing the rope-like object wound around the rope-clamping component.

[0015] Beneficial Effects

[0016] The utility model discloses a small hanging accessory knotter, which has the advantage that, since the outer peripheral surface is an inclined circular table surface or an inclined elliptical table surface, when the rope clamp component moves along the outer peripheral surface, its opening time is shorter than that of the rope clamp component in a reduced version of a square grass baler. The edge of the cross section of the outer peripheral surface of the utility model is a non-circular curve, while the movement trajectory of the rope clamp component is a circle. The mismatch between the two results in a reduction in the distance traveled by the rope clamp component on the outer peripheral surface, which in turn results in a reduction in the opening time of the rope clamp component. This solves the problem that when a reduced version of a square grass baler is directly prepared and used in a small hanging accessory knotting process, the rope clamp component opens for too long due to the matching of its movement trajectory with the shape of the boss, thereby causing the thinner rope-like material on the small hanging accessory to easily detach from its rope clamp component. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of an external cam described in the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of a small pendant knotter described in the utility model. Figure 1 ;

[0019] Figure 3 This is a schematic diagram of the structure of a small pendant knotter described in the utility model. Figure 2 ;

[0020] Figure 4 It is a structural schematic diagram of the rope clamp of the utility model.

[0021] Description of reference numerals:

[0022] 100 outer cam 110 outer peripheral surface 120 bottom surface

[0023] 130 top surface 200 rope clamping component 300 first transmission component

[0024] 310 first transmission shaft 320 first transmission gear 400 toothed disc

[0025] 410 first gear 420 second gear 430 first track

[0026] 500 Frame 510 Sleeve Structure 600 Rope Clamp Assembly

[0027] 610 second transmission gear 620 first worm 630 first worm wheel

[0028] 631 First center hole 640 Rope clamp 641 Second center hole

[0029] 642 Rope Clamp Assembly 6421 Rope Clamp 6422 Rope Guide

[0030] 643 First rope clamping drum accessory 644 Second rope clamping drum accessory 650 First connecting shaft

[0031] 700 Rope-off Rod DETAILED DESCRIPTION

[0032] like Figures 1 to 4 As shown, the utility model of a small hanging knotter comprises: an outer cam 100, the outer cam 100 is as shown in Figure 1 As shown, it includes an outer peripheral surface 110, a bottom surface 120 and a top surface 130, the outer peripheral surface 110 is an oblique frustoconical surface or an oblique elliptical conical surface, and the bottom surface 120 and the top surface 130 are circular or elliptical.

[0033] In specific implementation, the outer cam 100 is used to reduce the opening time of the rope clamping component 200 mainly by reducing the matching degree between the outer peripheral surface 110 and the motion trajectory of the rope clamping component 200. In the above scheme, for example, the edges of the cross section of the outer peripheral surface 110 are all non-circular curves, and when the rope clamping component 200 rotates, its motion trajectory is a circular curve, so the contact time of the rope clamping component 200 on the outer peripheral surface 110 is reduced; even, for another specific example, when the rope clamping component 200 moves on the outer peripheral surface 110, it can even be in point contact with the outer peripheral surface 110. Since the rope clamping component 200 can be opened only when it contacts the outer peripheral surface 110, the reduction of the contact time will lead to a reduction in the opening time of the rope clamping component 200, thereby solving the problem that when a reduced version of the square grass baler is directly prepared and used in the small hanging knotting process, the rope clamping component is opened for too long due to the matching of the movement trajectory of the rope clamping component with the shape of the boss, thereby causing the thinner rope material on the small hanging to easily detach from the rope clamping component. The rope clamping component 200 adopts the rope clamping component in the prior art, and those skilled in the art can select the rope clamping component in the prior art according to actual needs.

[0034] According to the above technical solution, further, the rope clamping component 200 includes a claw or a caliper, and the claw or the caliper can move along the outer peripheral surface 110 and open or close during the movement.

[0035] During specific implementation, the clamping jaws may be selected from the prior art, and those skilled in the art may select the clamping jaws from the prior art according to actual needs; the calipers may be selected from the prior art, and those skilled in the art may select the calipers from the prior art according to actual needs.

[0036] According to the above technical solution, further, the clamping jaw includes an upper clamping jaw, a first roller and a lower clamping jaw, the caliper includes an upper caliper, a second roller and a lower caliper, and the first roller and the second roller can both move along the outer peripheral surface 110 and open or close the upper clamping jaw and the caliper during the movement.

[0037] In a specific implementation, the first roller and the second roller respectively control the opening and closing actions of the upper jaw and the upper caliper, and the first roller and the second roller can contact the outer peripheral surface 110 when the jaw and the caliper rotate. When the first roller and the second roller contact the outer peripheral surface 110, the upper jaw and the upper caliper open upward, and when the first roller and the second roller are separated from the outer peripheral surface 110, the upper jaw and the upper caliper close downward.

[0038] According to the above technical solution, further, Figure 2 As shown, it also includes the rope clamping component 200 and the first transmission assembly 300; the rope clamping component 200 is connected to the first transmission assembly 300, and can move along the outer peripheral surface 110 and open or close during the movement; the first transmission assembly 300 includes a first transmission shaft 310 and a first transmission gear 320, wherein the first transmission gear 320 is arranged on the upper end of the first transmission shaft 310 through a hole-shaft fit, and is used to drive the rope clamping component 200 to move, and the lower end of the first transmission shaft 310 is connected to the rope clamping component 200.

[0039] In a specific implementation, when the first transmission gear 320 rotates, the first transmission shaft 310 is driven by the first transmission gear 320, and drives the rope clamping component 200 to rotate. The rope clamping component 200 can be a rope clamping component in the prior art, such as a claw or a caliper. Those skilled in the art can select a rope clamping component in the prior art according to actual needs.

[0040] According to the above technical solution, further, Figure 2 As shown, it also includes a toothed disc 400 and a frame 500 , the toothed disc 400 is mounted on the frame 500 , and a first gear 410 and a second gear 420 are provided on the toothed disc 400 , and the first gear 410 is meshed with the first transmission gear 320 .

[0041] In a specific implementation, when the toothed disc 400 rotates, the first gear 410 is driven by the toothed disc 400, and the first transmission gear 320 meshing with the first gear 410 also rotates with the first gear 410. In a specific example, a power shaft can be connected to the center of the toothed disc 400, and the power shaft is installed on the frame 500.

[0042] According to the above technical solution, further, Figure 2 As shown, the first transmission gear 320 is mounted on the frame 500 , and the frame 500 includes a sleeve structure 510 , and the first transmission shaft 310 is connected to the sleeve structure 510 .

[0043] In a specific implementation, the first transmission gear 320 can be mounted on the upper end of the sleeve structure 510 and matched with the hole axis of the first transmission shaft 310. The first transmission shaft 310 passes through the sleeve structure 510 from the upper end of the sleeve structure 510 where the first transmission gear 320 is located, and the lower end of the first transmission shaft 310 is connected to the rope clamping component 200. The use of the sleeve structure 510 can reduce the volume of the small pendant knotter, saving space and cost.

[0044] According to the above technical solution, further, Figure 3 to Figure 4 As shown, it also includes a rope clamping assembly 600, which includes a second transmission gear 610, a first worm 620, a first worm wheel 630, a rope clamp 640 and a first connecting shaft 650. The second transmission gear 610 is arranged on the first worm 620 through a hole-axis fit at one end of the gear ring away from the first worm 620, and meshes with the second gear 420. The first worm 620 is meshed with the first worm wheel 630. The first worm wheel 630 and the rope clamp 640 are respectively provided with a first center hole 631 and a second center hole 641. The first connecting shaft 650 connects the first center hole 631 and the second center hole 641, and is used to enable the first worm wheel 630 to drive the rope clamp 640 to move.

[0045] In specific implementation, when the toothed disc 400 rotates, the second gear 420 is driven by the toothed disc 400, and the second transmission gear 610 meshing with the second gear 420 also rotates with the second gear 420. The first worm 620 is connected to the second transmission gear 610 through the hole-shaft matching, and also rotates with the second transmission gear 610. The first worm 620 is meshed with the first worm wheel 630, so that the first worm 620 drives the first worm wheel 630 to move longitudinally through lateral rotation. The first connecting shaft 650 connects the first center hole 631 and the second center hole 641, so that the first worm wheel 630 drives the rope clamp 640 to move. Specifically, the first connecting shaft 650 passes through the middle of the frame 500, which can reduce the volume of the small pendant knotter, saving space and cost.

[0046] According to the above technical solution, further, Figure 2As shown, the rope clamp 640 includes a rope clamp disc assembly 642, a first rope clamp disc accessory 643 and a second rope clamp disc accessory 644, the first rope clamp disc accessory 643 and the second rope clamp disc accessory 644 are connected to the frame 500 and a cavity is formed therebetween, the rope clamp disc assembly 642 is disposed between the first rope clamp disc accessory 643 and the second rope clamp disc accessory 644, and the second center hole 641 is disposed on the rope clamp disc assembly 642.

[0047] In a specific implementation, the first rope clamping disc accessory 643 and the second rope clamping disc accessory 644 are relatively arranged on the frame 500 to separate the rope clamping disc from the first rope clamping disc. Figure 4 The rope clamping disc 6421 shown provides the cavity for the movement of the rope clamping disc 6421 , the rope clamping discs 6421 are connected to each other and constitute the rope clamping disc assembly 642 , and the second center hole 641 is provided on at least one of the rope clamping discs 6421 .

[0048] According to the above technical solution, further, Figure 4 As shown, the rope clamping disc assembly 642 includes two to three rope clamping discs 6421 connected in the middle, wherein at least one of the rope clamping discs 6421 is provided with a second center hole 641, the rope clamping disc 6421 is disposed in the cavity or separated from the cavity by the cavity wall, and one to four rope guide openings 6422 are provided on the edge of each rope clamping disc 6421, and the rope guide opening 6422 is a notch.

[0049] In a specific implementation, the guide rope opening 6422 is a notch, and the shape of the notch is not limited, and can adopt a shape in the prior art. Those skilled in the art can select a shape in the prior art according to actual needs, such as a semicircle, a semi-ellipse, a fan, etc. The number of the guide rope openings can be one, two, three or four.

[0050] According to the above technical solution, further, Figure 2 As shown, it also includes a rope-removing rod 700, which is connected to the frame 500 and cooperates with the first track 430. At least one end of the rope-removing rod 700 is provided with a rope-cutting knife for cutting and removing the rope-like object wound around the rope-clamping component 200.

[0051] In specific implementation, after the rope-like material is driven by the rope clamping component 200 to rotate into place, since the first track 430 rotates with the toothed disc 400, the ball top of the head of the rope-removing rod 700 cooperates with the movement and rotation of the first track 430, so that the rope-removing rod 700 is driven to a specified position by the toothed disc 400, and then the rope-removing rod 700 rotates in the opposite direction with the toothed disc 400, and the rope cutting knife cuts the rope-like material during the movement of the rope-removing rod 700, and then the rope-removing rod 700, driven by the toothed disc 400, guides the rope-like material to detach from the rope clamping component 200 and realizes the knotting function.

[0052] The knotting process of the utility model is:

[0053] The toothed disc 400 rotates, driving the first gear 410 and the second gear 420 to rotate. The second transmission gear 610 meshed with the second gear 420 also rotates with the second gear 420. The first worm 620, which is connected to the second transmission gear 610 through the hole-shaft matching, also rotates with the second transmission gear 610. The first worm 620 meshes with the first worm wheel 630, so that the first worm 620 drives the first worm wheel 630 to move longitudinally through lateral rotation. The first connecting shaft 650 connects the first center hole 631 and the second center hole 641, so that the first worm wheel 630 drives the rope clamp 640 to move, so that the rope material in the rope guide port 6422 in the rope clamp 640 is sent to the rope clamp component 200. At the same time, the first transmission gear 320 meshed with the first gear 410 also rotates with the first gear 410. When the first transmission gear 320 rotates, the first transmission shaft 310 is driven by the first transmission gear 320. The rope clamp 640 moves and drives the rope clamp component 200 to rotate along the outer peripheral surface 110. During the rotation process, the rope clamp component 200 opens when it contacts the outer peripheral surface 110, and closes when it does not contact the outer peripheral surface 110. In this process, the rope material to be knotted is wound around the outside of the rope clamp component 200 through the moving part of the rope clamp 640, and partially extends into the opened rope clamp component 200, such as between the upper clamp and the lower clamp, and between the upper caliper and the lower caliper. When knotting starts, the rope clamp component The part 200 leaves the outer peripheral surface 110 and closes, biting the rope-like material. At this time, the rope-like material has been driven by the rope clamping part 200 to rotate into place, and the rope-taking rod 700, driven by the toothed disc 400, cooperates with the first track 430 to reach the specified position; then the rope-taking rod 700 moves in the opposite direction again, and the rope cutting knife cuts the rope-like material during the movement of the rope-taking rod 700, and then the rope-taking rod 700 drives the rope-like material to leave the rope clamping part 200 and realizes the knotting function.

[0054] In the description of the present invention, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present invention.

[0055] For those skilled in the art, various other corresponding changes and deformations can be made according to the technical solutions and concepts described above, and all of these changes and deformations should fall within the protection scope of the claims of the present disclosure.

Claims

1. A small pendant knotter, characterized in that: include: An external cam (100), the external cam (100) being used to reduce the opening time of a rope clamping component (200) which is arranged below the external cam and can be opened after contacting the external cam, wherein the external cam (100) comprises an outer peripheral surface (110), a bottom surface (120) and a top surface (130), the outer peripheral surface (110) being an inclined frustum surface or an inclined elliptical cone surface, and the bottom surface (120) and the top surface (130) being circular or elliptical; It also includes the rope clamping component (200) and a first transmission assembly (300); the rope clamping component (200) is connected to the first transmission assembly (300), can move along the outer peripheral surface (110) and open or close during the movement; the first transmission assembly (300) includes a first transmission shaft (310) and a first transmission gear (320), wherein the first transmission gear (320) is arranged on the upper end of the first transmission shaft (310) through a hole-shaft fit, and is used to drive the rope clamping component (200) to move, and the lower end of the first transmission shaft (310) is connected to the rope clamping component (200); It also includes a toothed disc (400) and a frame (500), wherein the toothed disc (400) is mounted on the frame (500), and a first gear (410) and a second gear (420) are provided on the toothed disc (400), and the first gear (410) is meshed with the first transmission gear (320); The invention also includes a rope clamping assembly (600), wherein the rope clamping assembly (600) includes a second transmission gear (610), a first worm (620), a first worm wheel (630), a rope clamp (640) and a first connecting shaft (650). The second transmission gear (610) is arranged on an end of the gear ring of the first worm (620) away from the first worm (620) through a hole-shaft fit, and meshes with the second gear (420). The first worm (620) is meshed with the first worm wheel (630). The first worm wheel (630) and the rope clamp (640) are respectively provided with a first center hole (631) and a second center hole (641). The first connecting shaft (650) connects the first center hole (631) and the second center hole (641) so as to enable the first worm wheel (630) to drive the rope clamp (640) to move.

2. The small pendant knotter according to claim 1, characterized in that: The rope clamping component (200) comprises a claw or a caliper, and the claw or the caliper can move along the outer peripheral surface (110) and open or close during the movement.

3. The small pendant knotter according to claim 2, characterized in that: The clamping jaw comprises an upper clamping jaw, a first roller and a lower clamping jaw, and the caliper comprises an upper caliper, a second roller and a lower caliper. Both the first roller and the second roller can move along the outer peripheral surface (110) and open or close the upper clamping jaw and the upper caliper during the movement.

4. The small pendant knotter according to claim 1, characterized in that: The first transmission gear (320) is mounted on the frame (500), the frame (500) comprises a sleeve structure (510), and the first transmission shaft (310) is connected to the sleeve structure (510).

5. The small pendant knotter according to claim 1, characterized in that: The rope clamp (640) comprises a rope clamping disc assembly (642), a first rope clamping disc accessory (643) and a second rope clamping disc accessory (644); the first rope clamping disc accessory (643) and the second rope clamping disc accessory (644) are connected to the frame (500) and a cavity is formed therebetween; the rope clamping disc assembly (642) is arranged between the first rope clamping disc accessory (643) and the second rope clamping disc accessory (644); and the second center hole (641) is arranged on the rope clamping disc assembly (642).

6. The small pendant knotter according to claim 5, characterized in that: The rope clamping disc assembly (642) includes two to three rope clamping discs (6421) connected in the middle, wherein at least one of the rope clamping discs (6421) is provided with a second center hole (641), the rope clamping disc (6421) is arranged in the cavity or separated from the cavity by the cavity wall, and one to four rope guide openings (6422) are arranged on the edge of each rope clamping disc (6421), and the rope guide opening (6422) is a notch.

7. The small pendant knotter according to claim 6, characterized in that: It also comprises a rope-removing rod (700), which is connected to the frame (500) and has at least one end provided with a rope-cutting knife for cutting and removing the rope-like object wound around the rope-holding component (200).

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