Mechanical arm transmission structure of pressure spring machine

Abstract

The utility model discloses a mechanical arm transmission structure of a compression spring machine, which comprises a driving motor arranged on the back of a panel, a bearing seat arranged on the panel, a bearing wheel arranged on the bearing seat and rotatably connected with an output shaft of a speed reducer, and a transmission shaft arranged on the bearing wheel and rotatably connected with the output shaft of the speed reducer. A deflection convex shaft is eccentrically arranged on the front end surface of the bearing wheel; the containing groove is formed in the panel and used for installing the sliding assembly, the sliding assembly comprises a sliding seat block installed in the containing groove and a sliding block sliding relative to the sliding seat block, and the two sides of the sliding seat block are provided with side blocks in a protruding and extending mode and abut against the two side edges of the sliding block in a sliding mode. A sliding block pressing plate matched with the sliding base block to form a sliding groove is arranged at the upper end of the side block, and a protruding shaft used for being connected with a connecting rod in a sleeved mode and a tool apron used for installing a tool are arranged on the sliding block. The contact area of the sliding block and the sliding seat block can be increased, the transmission stability is further improved, the transmission precision is improved, and compared with a traditional lead screw transmission or track transmission structure, the transmission mechanism has the advantages of high strength, high rigidity, long service life and excellent bearing capacity.

Description

Technical Field

[0001] The utility model relates to a spring pressing machine device, in particular to a mechanical arm transmission structure of a spring pressing machine. Background Art

[0002] A spring pressing machine is a mechanical device widely used in industrial production for bending and shaping metal wires. Its working principle mainly involves the action of pressure and force to cause plastic deformation of the metal material, thereby achieving the required shape and size. An existing spring pressing machine includes a pitch servo motor, an upper pitch shaft, a lower pitch shaft, and a pitch lead screw transmission pair. The upper and lower pitch shafts are respectively perpendicular to the front wall panel and symmetric about the axis of the pitch lead screw transmission pair. One end of the upper and lower pitch shafts is fixed to the nut of the pitch lead screw transmission pair, and the other ends are respectively provided with pitch pin mounting holes for fixing the pitch of the processed spring. The pitch servo motor is fixed to the rear wall panel, and its output shaft is connected to the lead screw in the pitch lead screw transmission pair. The upper and lower pitch shafts are opposite to the through holes on the front wall panel and can pass through the through holes. The pitch is adjusted by the servo motor and the pitch lead screw transmission pair. This structure uses a lead screw transmission pair for transmission, resulting in problems such as unstable transmission shaking and poor transmission accuracy. Summary of the Utility Model

[0003] The utility model provides a mechanical arm transmission structure of a spring pressing machine with a simple structure, stable mechanical arm transmission, and improved transmission accuracy.

[0004] The mechanical arm transmission structure of the spring pressing machine described in the utility model includes a driving motor installed on the back of the panel. The output shaft of the driving motor is connected to a speed reducer, and a bearing seat installed on the panel. A bearing wheel rotatably connected to the output shaft of the speed reducer is provided on the bearing seat. An eccentrically arranged yaw convex shaft is provided on the front end face of the bearing wheel. It also includes a sliding component and a receiving groove provided on the panel for installing the sliding component. The sliding component includes a sliding seat block installed in the receiving groove and a slider sliding relative to the sliding seat block. Side blocks protruding and extending on both sides of the sliding seat block are slidably abutted against both sides of the slider. A slider pressing plate that cooperates with the sliding seat block to form a sliding groove is provided at the upper end of the side block. A convex shaft for connecting a connecting rod and a tool holder for installing a tool are provided on the slider. First connecting rod holes and second connecting rod holes are provided at both ends of the connecting rod. The first connecting rod hole is rotatably sleeved on the yaw convex shaft, and the second connecting rod hole is rotatably sleeved on the convex shaft. An oil groove for injecting lubricating oil is provided on the surface of the slider opposite to the sliding seat block. The slider and the sliding seat block are tightly fitted so that the oil groove and the surface of the sliding seat block form a sealed cavity to prevent the leakage of lubricating oil in the oil groove.

[0005] Further, the structure of the connecting rod includes an adjustable screw rod, an upper screw rod connecting block and a lower screw rod connecting block respectively connected to both ends of the adjustable screw rod. The upper screw rod connecting block is provided with a first connecting rod hole that can be rotatably sleeved on the yaw camshaft, and the lower screw rod connecting block is provided with a second connecting rod hole that can be rotatably sleeved on the camshaft. The rod body of the adjustable screw rod is provided with threads, and the upper screw rod connecting block and the lower screw rod connecting block are respectively provided with threaded holes that match the threads of the rod body of the adjustable screw rod. A limit left-handed nut that can be rotated left to abut against the upper screw rod connecting block is also sleeved on the adjustable screw rod; a limit right-handed nut that can be rotated right to abut against the lower screw rod connecting block is also sleeved on the adjustable screw rod.

[0006] Further, two or more oil grooves are provided on the surface of the slider facing the sliding seat block.

[0007] Further, the oil grooves are arranged in a straight line.

[0008] Further, the oil grooves are arranged in a bent wavy shape.

[0009] Further, the slider pressing plate is provided with a plurality of through holes, and the side block is provided with threaded holes that match the through holes of the slider pressing plate. The slider pressing plate is fixedly installed on the side block through bolts.

[0010] Further, a slotted opening penetrating the first connecting rod hole is provided on the side surface of the upper screw rod connecting block. The slotted opening is arranged along the axial direction of the first connecting rod hole. A screw hole is provided on the side surface of the upper screw rod connecting block perpendicular to and penetrating the slotted opening. A screw is arranged in the screw hole. As the screw in the screw hole is tightened, the side wall of the upper screw rod connecting block clamps the yaw camshaft.

[0011] Further, a slotted opening penetrating the second connecting rod hole is provided on the side surface of the lower screw rod connecting block. The slotted opening is arranged along the axial direction of the second connecting rod hole. A screw hole is provided on the side surface of the lower screw rod connecting block perpendicular to and penetrating the slotted opening. A screw is arranged in the screw hole. As the screw in the screw hole is tightened, the side wall of the lower screw rod connecting block clamps the camshaft.

[0012] For the robotic arm transmission structure of the spring coiling machine, by setting a bearing seat, a bearing wheel connected to the output end of the driving motor through a speed reducer and a yaw camshaft are arranged on the bearing seat, so that both ends of the connecting rod are respectively hinged to the yaw camshaft on the bearing wheel and the camshaft on the slider. The yaw camshaft is eccentrically arranged on the bearing wheel, realizing that the driving motor drives the slider to slide relative to the sliding seat block, and further driving the tool to perform diameter-changing actions, pitch-changing actions and cutting actions. The structure of the present invention is simple. By setting oil grooves on the slider, the movement friction coefficient between the slider and the sliding seat block can be reduced, so that the contact area between the slider and the sliding seat block can be increased, thereby improving the transmission stability and improving the transmission accuracy. Compared with the traditional lead screw transmission or track transmission structure, it has high strength, high rigidity, long service life and excellent load-bearing capacity. Description of the Drawings

[0013] Figure 1 It is a schematic installation diagram of the robotic arm transmission structure of a compression spring machine.

[0014] Figure 2 It is a schematic diagram of the robotic arm transmission structure.

[0015] Figure 3 It is a schematic diagram of the connecting rod structure.

[0016] Figure 4 It is a schematic diagram of the panel structure.

[0017] Figure 5 It is a schematic diagram of the sliding component structure.

[0018] Figure 6 It is an exploded schematic diagram of the sliding component. Specific embodiments

[0019] In order to make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0020] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0021] Such as Figure 1-6As shown in the figure, a robotic arm transmission structure of a compression spring machine includes a driving motor 2 installed on the back of a panel 1. The output shaft of the driving motor is connected to a speed reducer 3, and a bearing seat 4 is installed on the panel. A bearing wheel 401 rotatably connected to the output shaft of the speed reducer 3 is provided on the bearing seat 4, and an eccentrically arranged yaw convex shaft 402 is provided on the front end surface of the bearing wheel 401. It also includes a sliding assembly 5 and a receiving groove 101 provided on the panel for installing the sliding assembly. The sliding assembly includes a sliding seat block 501 installed in the receiving groove and a slider 502 sliding relative to the sliding seat block. Side blocks 503 protruding and extending from both sides of the sliding seat block are slidably abutted against both sides of the slider. A slider pressing plate 504 that cooperates with the sliding seat block to form a chute is provided at the upper end of the side block. A convex shaft 505 for sleeving a connecting rod 6 and a tool holder 8 for installing a tool 7 are provided on the slider 502. First connecting rod holes 601 and second connecting rod holes 602 are provided at both ends of the connecting rod 6. The first connecting rod hole 601 is rotatably sleeved on the yaw convex shaft 402, and the second connecting rod hole 602 is rotatably sleeved on the convex shaft 505. An oil groove 9 for injecting lubricating oil is provided on the surface of the slider 502 opposite to the sliding seat block. The slider and the sliding seat block are closely attached to each other so that the oil groove and the surface of the sliding seat block form a sealed cavity to prevent the lubricating oil in the oil groove from leaking. By providing a bearing seat, a bearing wheel and a yaw convex shaft connected to the output end of the driving motor through a speed reducer are provided on the bearing seat, so that both ends of the connecting rod are hinged to the yaw convex shaft on the bearing wheel and the convex shaft on the slider respectively. The yaw convex shaft is eccentrically arranged on the bearing wheel, realizing that the driving motor drives the slider to slide relative to the sliding seat block, and further driving the tool to perform diameter-changing actions, pitch-changing actions and cutting actions. The structure of the present utility model is simple. By providing an oil groove on the slider, the movement friction coefficient between the slider and the sliding seat block can be reduced, so that the contact area between the slider and the sliding seat block can be increased, thereby improving the transmission stability and improving the transmission accuracy. Compared with the traditional screw drive or track drive structure, it has high strength, high rigidity, long service life and excellent load-bearing capacity.

[0022] The structure of the connecting rod 6 includes an adjustable screw 603, an upper screw connecting block 604 and a lower screw connecting block 605 which are respectively connected to both ends of the adjustable screw. The upper screw connecting block 604 is rotatably sleeved in the first connecting rod hole 601 of the yaw convex shaft, and the lower screw connecting block 605 is rotatably sleeved in the second connecting rod hole 602 on the convex shaft. The rod body of the adjustable screw 603 is provided with threads, and the upper screw connecting block 604 and the lower screw connecting block 605 are respectively provided with threaded holes matching the threads of the rod body of the adjustable screw. A limit left-handed nut 606 that can be rotated left to abut against the upper screw connecting block 604 is also sleeved on the adjustable screw; a limit right-handed nut 607 that can be rotated right to abut against the lower screw connecting block 605 is also sleeved on the adjustable screw. By rotating the upper screw connecting block, the lower screw connecting block and the adjustable screw, the distance between the upper screw connecting block and the lower screw connecting block can be adjusted. After adjusting the distance between the upper screw connecting block and the lower screw connecting block, the distance between the upper screw connecting block and the lower screw connecting block is locked by rotating the limit left-handed nut or the limit right-handed nut to abut against the upper screw connecting block and the lower screw connecting block respectively, so that the length of the tool entering and exiting can be adjusted, and springs with different outer diameter types can be machined.

[0023] Two or more oil grooves 9 are provided on the surface of the slider facing the slide block, which can further reduce the movement friction coefficient between the slider and the slide block.

[0024] The oil grooves 9 are arranged in a straight line. Further, the oil grooves 9 are arranged in a bent wavy shape, which can increase the area of the oil grooves, and further reduce the movement friction coefficient between the slider and the slide block.

[0025] The slider pressing plate 504 is provided with a plurality of through holes 10, and the side block is provided with threaded holes matching the through holes of the slider pressing plate. The slider pressing plate is fixedly installed on the side block through bolts. By detachably installing the slider pressing plate on the side block, the slider pressing plate can be better assembled, so that the slider pressing plate can better adapt to limit the slider, and the stability of the slider sliding relative to the slide block is improved.

[0026] A slot 11 penetrating the first connecting rod hole is provided on the side surface of the upper screw connecting block 604. The slot 11 is arranged along the axial direction of the first connecting rod hole. A screw hole 12 perpendicular to and penetrating the slot is provided on the side surface of the upper screw connecting block 604. A screw is arranged in the screw hole 12. As the screw in the screw hole is tightened, the side wall of the upper screw connecting block (604) clamps the yaw convex shaft, and the yaw convex shaft can be locked to prevent loosening between the first connecting rod hole of the upper screw connecting block and the yaw convex shaft after long-term operation.

[0027] The side of the lower screw connecting block 605 is provided with a slotted opening penetrating the second connecting rod hole. The slotted opening is arranged along the axial direction of the second connecting rod hole. The side of the lower screw connecting block 605 is provided with a screw hole vertically penetrating the slotted opening. A screw is arranged in the screw hole. As the screw in the screw hole is tightened, the side wall of the lower screw connecting block 605 clamps the convex shaft, which can lock the convex shaft to prevent loosening between the second connecting rod hole of the lower screw connecting block and the convex shaft after long-term operation.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A robotic arm transmission structure of a compression spring machine, characterized in that, It includes a driving motor (2) installed on the back of the panel (1), the output shaft of the driving motor is connected to a speed reducer (3), and a bearing seat (4) installed on the panel. A bearing wheel (401) rotatably connected to the output shaft of the speed reducer (3) is provided on the bearing seat (4), and an eccentrically arranged yaw convex shaft (402) is provided on the front end face of the bearing wheel (401); it also includes a sliding assembly (5) and a receiving groove (101) provided on the panel for installing the sliding assembly. The sliding assembly includes a sliding seat block (501) installed in the receiving groove and a slider (502) sliding relative to the sliding seat block. Side blocks (503) protruding and extending on both sides of the sliding seat block (501) are slidably abutted against both sides of the slider. A slider pressing plate (504) cooperating with the sliding seat block to form a sliding groove is provided at the upper end of the side block. A convex shaft (505) for sleeving a connecting rod (6) and a tool holder (8) for installing a tool (7) are provided on the slider (502). First connecting rod holes (601) and second connecting rod holes (602) are provided at both ends of the connecting rod (6). The first connecting rod hole (601) is rotatably sleeved on the yaw convex shaft (402), and the second connecting rod hole (602) is rotatably sleeved on the convex shaft (505). An oil groove (9) for injecting lubricating oil is provided on the surface of the slider (502) opposite to the sliding seat block. The slider and the sliding seat block are tightly attached to each other so that the oil groove and the surface of the sliding seat block form a sealed cavity to prevent the lubricating oil in the oil groove from leaking.

2. The robotic arm transmission structure of the compression spring machine according to claim 1, characterized in that, The structure of the connecting rod (6) includes an adjustable screw rod (603) and an upper screw rod connecting block (604) and a lower screw rod connecting block (605) respectively connected to both ends of the adjustable screw rod. The upper screw rod connecting block (604) is rotatably sleeved in the first connecting rod hole (601) of the yaw convex shaft, and the lower screw rod connecting block (605) is rotatably sleeved in the second connecting rod hole (602) on the convex shaft. The rod body of the adjustable screw rod (603) is provided with threads, and the upper screw rod connecting block (604) and the lower screw rod connecting block (605) are respectively provided with threaded holes matching the threads of the rod body of the adjustable screw rod. A limiting left-handed nut (606) that can be rotated leftward to abut against the upper screw rod connecting block (604) is also sleeved on the adjustable screw rod; a limiting right-handed nut (607) that can be rotated rightward to abut against the lower screw rod connecting block (605) is also sleeved on the adjustable screw rod.

3. The robotic arm transmission structure of the compression spring machine according to claim 1, wherein, Two or more oil grooves (9) are provided on the surface of the slider opposite to the sliding seat block.

4. The robotic arm transmission structure of the compression spring machine according to claim 1, characterized in that, The oil grooves (9) are arranged in a straight line.

5. The robotic arm transmission structure of the compression spring machine according to claim 1, characterized in that The oil grooves (9) are arranged in a bent wavy shape.

6. The robotic arm transmission structure of the compression spring machine according to claim 1, characterized in that, The slider pressing plate (504) is provided with a plurality of through holes (10), and the side block is provided with threaded holes matching the through holes of the slider pressing plate. The slider pressing plate is fixedly installed on the side block through bolts.

7. The robotic arm transmission structure of the compression spring machine according to claim 2, characterized in that, A slot (11) penetrating the first connecting rod hole is provided on the side surface of the upper screw rod connecting block (604). The slot (11) is arranged along the axial direction of the first connecting rod hole. A screw hole (12) perpendicular to and penetrating the slot is provided on the side surface of the upper screw rod connecting block (604). A screw is arranged in the screw hole (12). As the screw in the screw hole is tightened, the side wall of the upper screw rod connecting block (604) clamps the yaw convex shaft.

8. The robotic arm transmission structure of the compression spring machine according to claim 2, characterized in that, The side of the lower screw connecting block (605) is provided with a slotted opening penetrating the second connecting rod hole, the slotted opening is arranged along the axial direction of the second connecting rod hole, the side of the lower screw connecting block (605) is provided with a screw hole vertically penetrating the slotted opening, a screw is arranged in the screw hole, and as the screw in the screw hole is tightened, the side wall of the lower screw connecting block (605) clamps the convex shaft.

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