Four-axis automatic screw locking machine

Abstract

The invention relates to the technical field of automatic screw locking machines, and discloses a four-axis automatic screw locking machine which comprises a machine base, two longitudinal moving structures are fixedly installed on the surface of the machine base, a material plate table capable of longitudinally moving is arranged on the surfaces of the longitudinal moving structures, and a transverse moving structure is arranged above the machine base. A transverse moving table capable of transversely moving is arranged on the surface of the transverse moving structure, and an up-down walking screw lock pair capable of moving up and down is arranged at the bottom end of the transverse moving table. An extrusion pipe and a screw suction pipe are arranged at the bottom end of the up-down walking screw lock pair, a screw supply box is arranged in the middle of the surface of the machine base, and side boxes are arranged on the two sides of the screw supply box. The rotating electromagnet is arranged to drive a screw in the switching pipe to move, so that contact with the screw can be reduced, and the phenomenon that the screw is stuck when moving in a pipeline can be greatly reduced.

Description

Technical Field

[0001] The invention relates to the technical field of automatic screw locking machines, and in particular to a four-axis automatic screw locking machine. Background Art

[0002] Automatic screw locking machine is a kind of equipment used for screw tightening operation in the automated production process. It can complete the precise installation of a large number of screws in a short time through the control system, drive system and tightening tools, and is widely used in electronics, automobiles, home appliances, hardware and other industries.

[0003] The existing patent discloses an automatic screw locking machine (CN108942190A), wherein the automatic screw locking machine includes a frame, a feeding mechanism, a moving device and a locking mechanism, wherein the feeding mechanism and the moving device are both arranged on the frame, and the locking mechanism is arranged on the moving device; the feeding mechanism includes a discharge storage tube, and the locking mechanism includes a locking device, a locking nozzle and a feeding tube, wherein the feeding tube is connected to the locking nozzle. The screw locking machine disclosed in the patent still adopts the traditional method that requires additional screw feeding equipment, which increases the production cost. Moreover, the traditional screw feeding equipment will use a driving device to intervene in the movement of the screw, which easily causes the problem of the screw being stuck. Summary of the invention

[0004] The main technical problem solved by the present invention is to provide a four-axis automatic screw locking machine, which solves the problems in the above-mentioned background technology.

[0005] To solve the above technical problems, according to one aspect of the present invention, more specifically, a four-axis automatic screw locking machine includes a machine base, two longitudinal moving structures are fixedly installed on the surface of the machine base, a material plate table capable of longitudinal movement is provided on the surface of the longitudinal moving structure, a transverse moving structure is provided above the machine base, a transverse moving table capable of transverse movement is provided on the surface of the transverse moving structure, and a screw locking device capable of moving up and down is provided at the bottom end of the transverse moving table;

[0006] The bottom end of the up-and-down moving screw lock is provided with an extrusion tube and a screw suction tube, a screw supply box is provided in the middle of the surface of the machine base, and side boxes are provided on both sides of the screw supply box;

[0007] The interior of the screw supply box includes a screw placement groove, a vibration tube, a hose and a transfer tube, wherein the end of the transfer tube passes through the side box.

[0008] Furthermore, one end of the vibration tube passes through the screw placement groove, and one end of the vibration tube is provided with a screw entry port and a vibration pick, wherein the vibration tube is fixedly connected to the inner wall of the screw supply box through the vibration pick.

[0009] Furthermore, a limit plate and a support rod are provided inside the screw supply box and below the vibration tube, wherein the limit plate is fixedly installed inside the screw supply box through the support rod;

[0010] A lifting plate which can move up and down is sleeved on the support rod, and a second spring is sleeved on the surface of the support rod and located between the limiting plate and the lifting plate.

[0011] Furthermore, two vibration rods are provided above the lifting plate, and the top ends of the two vibration rods penetrate to the top of the limit plate and are fixedly connected to the vibration tube;

[0012] A motor is also provided below the limit plate, and an output shaft sleeve of the motor is provided with a cam, wherein the cam is in pressure contact with the lifting plate.

[0013] Furthermore, a rotatable rotating disk is provided inside the screw supply box and below the transfer tube, a rotating sleeve is provided below the rotating disk, and the rotating disk further includes a rotating shaft at the center;

[0014] An electromagnet is provided on the surface of the rotating disk, and a contact electrode is provided on the surface of the rotating sleeve at a position corresponding to the electromagnet;

[0015] A power supply electrode for supplying power is also provided inside the screw supply box, wherein the power supply electrode is only in contact with the contact electrode near the corner of the transfer tube.

[0016] Furthermore, a driving gear is sleeved on the bottom end of the rotating shaft, a threaded rod is rotatably connected to one side of the driving gear, and a sleeve gear is sleeved on the other end surface of the threaded rod;

[0017] The interior of the sleeve gear includes a one-way groove, and the surface of the threaded rod and the position close to the sleeve gear are provided with movable clamping teeth and a torsion spring, wherein the movable clamping teeth are clamped in the one-way groove.

[0018] Furthermore, a fine oil cylinder is provided inside the screw supply box and above the sleeve gear, and the output shaft of the fine oil cylinder is connected to a rack, wherein the rack is meshingly connected to the sleeve gear.

[0019] Furthermore, two rough oil cylinders are arranged inside the side box, and the rough oil cylinders include telescopic shafts, wherein the other ends of the telescopic shafts of the two rough oil cylinders are fixedly mounted with squeezed plates, and a suction screw insertion hole is opened in the middle of the squeezed plate;

[0020] A spring 1 is also sleeved on the surface of the telescopic shaft; an oil pipe is connected between the tail end of the thick oil cylinder and the tail end of the thin oil cylinder.

[0021] Furthermore, a screw outlet is provided above the end of the adapter tube, and a pin groove is provided below the end of the adapter tube.

[0022] Beneficial effects:

[0023] 1. The present invention drives the screw in the transfer tube to move by setting a rotating electromagnet, which can reduce the contact with the screw and greatly reduce the phenomenon of the screw getting stuck when moving in the pipeline.

[0024] 2. The present invention is designed that the power supply electrode only supplies power to the electromagnet on one side, so that the rotation of the electromagnet on the powered side will drive the screw in the transfer tube to move, and will not interfere with the movement of screws in other positions. Moreover, when the electromagnet stops rotating, it will also block the screw from sliding out of the screw outlet. This design can greatly improve the working stability of the screw supply box.

[0025] 3. The present invention can drive the lifting plate to move up and down through the rotation of the cam, and the vibration of the lifting plate can be transmitted to the vibration tube through the vibration rod, and the hose can isolate the vibration of the vibration tube and transmit it to the transfer tube, so that the screws located in the screw placement groove can be transported to the vibration tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the present invention;

[0027] Figure 2 For the present invention Figure 1 A magnified image of area A;

[0028] Figure 3 This is a structural schematic diagram of a screw box of the present invention;

[0029] Figure 4 is a cross-sectional view of a side box in the present invention;

[0030] Figure 5 It is a cross-sectional view of the screw supply box in the present invention;

[0031] Figure 6 It is a schematic diagram of the internal structure of the screw supply box in the present invention;

[0032] Figure 7 is a cross-sectional view of the sleeve gear in the present invention;

[0033] Figure 8 It is a top view of the transfer tube and the motor structure of the present invention;

[0034] Fig. 9 This is a bottom view of the transfer tube and the motor structure of the present invention;

[0035] Fig.10 It is a schematic diagram of the coarse oil cylinder and the fine oil cylinder in the present invention.

[0036] In the figure: 1, machine base; 2, horizontal moving structure; 3, longitudinal moving structure; 4, material plate platform; 5, screw supply box; 6, side box; 7, horizontal moving platform; 8, up and down walking screw lock; 9, extrusion tube; 10, suction screw tube; 11, extruded plate; 12, suction screw socket; 13, telescopic shaft; 14, spring 1; 15, thick oil cylinder; 16, oil pipe; 17, screw placement groove; 18, vibration tube; 19, vibration rod; 20, motor; 21, thin oil cylinder; 22, Driving gear; 23. Rotating shaft; 24. Socket gear; 25. Rack; 26. Rotating sleeve; 27. Hose; 28. Rotating disk; 29. ​​Electromagnet; 30. Screw inlet; 31. Vibrating paddle; 32. Movable latch; 33. Screw outlet; 34. Torsion spring; 35. Contact electrode; 36. Threaded rod; 37. Power supply electrode; 38. Transfer tube; 39. Limiting plate; 40. Spring 2; 41. Support rod; 42. Lifting plate; 43. Cam; 44. Pin groove. DETAILED DESCRIPTION

[0037] In order to make the technical solution of the present invention clearer, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] Example 1

[0039] like Figure 1 As shown, according to one aspect of the present invention, a four-axis automatic screw locking machine is provided, including a machine base 1, two longitudinal moving structures 3 are fixedly installed on the surface of the machine base 1, a material plate table 4 capable of longitudinal movement is provided on the surface of the longitudinal moving structure 3, a transverse moving structure 2 is provided above the machine base 1, a transverse moving table 7 capable of transverse movement is provided on the surface of the transverse moving structure 2, and a screw lock 8 capable of moving up and down is provided at the bottom end of the transverse moving table 7; an extrusion tube 9 and a screw suction tube 10 are provided at the bottom end of the up and down moving screw lock 8, a screw supply box 5 is provided in the middle of the surface of the machine base 1, and side boxes 6 are provided on both sides of the screw supply box 5; the interior of the screw supply box 5 includes a screw placement groove 17, a vibration tube 18, a hose 27 and a transfer tube 38, wherein the end of the transfer tube 38 penetrates into the side box 6. A screw outlet 33 is provided above the end of the transfer tube 38, and a pin groove 44 is provided below the end of the transfer tube 38. In this way, no matter when the nut is forward or backward and the screw enters the screw outlet 33, the nut will be stuck above the pin groove 44, and the threaded nail part will fall into the pin groove 44, which can ensure that the nut of the screw is always upward.

[0040] Example 2

[0041] like Figure 1-10As shown, one end of the vibration tube 18 passes through the screw placement groove 17, and one end of the vibration tube 18 is provided with a screw entry port 30 and a vibration pick 31, wherein the vibration tube 18 is fixedly connected to the inner wall of the screw supply box 5 through the vibration pick 31. A limit plate 39 and a support rod 41 are provided inside the screw supply box 5 and below the vibration tube 18, wherein the limit plate 39 is fixedly installed inside the screw supply box 5 through the support rod 41; a lifting plate 42 capable of moving up and down is sleeved on the support rod 41, and a spring 40 is sleeved on the surface of the support rod 41 and between the limit plate 39 and the lifting plate 42. Two vibration rods 19 are provided above the lifting plate 42, and the top ends of the two vibration rods 19 pass through the top of the limit plate 39 and are fixedly connected to the vibration tube 18; a motor 20 is also provided below the limit plate 39, and a cam 43 is provided on the output shaft sleeve of the motor 20, wherein the cam 43 is in pressure contact with the lifting plate 42 (such as Fig. 9 As shown), the spring 2 40 can make the lifting plate 42 close to the cam 43, so that when the cam 43 rotates, the lifting plate 42 can be driven to vibrate at a high speed.

[0042] Example 3

[0043] like Figure 1-10 As shown, a rotatable rotating disk 28 is provided inside the screw supply box 5 and below the transfer tube 38, a rotating sleeve 26 is provided below the rotating disk 28, and the rotating disk 28 also includes a rotating shaft 23 at the center; an electromagnet 29 is provided on the surface of the rotating disk 28, and a contact electrode 35 is provided on the surface of the rotating sleeve 26 and at a position corresponding to the electromagnet 29; a power supply electrode 37 for power supply is also provided inside the screw supply box 5, wherein the power supply electrode 37 only contacts with the contact electrode 35 near the corner of the transfer tube 38 (as shown in FIG. Figure 6 As shown), the power supply electrode 37 only supplies power to the electromagnet 29 on one side, so that the rotation of the electromagnet 29 on the powered side will drive the screw in the transfer tube 38 to move, and when the electromagnet 29 stops rotating, it will also block the screw from sliding out of the screw outlet 33.

[0044] The bottom end of the rotating shaft 23 is sleeved with a driving gear 22, and a threaded rod 36 is rotatably connected to one side of the driving gear 22, wherein the other end surface of the threaded rod 36 is sleeved with a sleeve gear 24; the sleeve gear 24 includes a one-way groove inside, and a movable clamping tooth 32 and a torsion spring 34 are provided on the surface of the threaded rod 36 and near the sleeve gear 24, wherein the movable clamping tooth 32 is clamped in the one-way groove. A fine oil cylinder 21 is provided inside the screw box 5 and located above the sleeve gear 24, and the output shaft of the fine oil cylinder 21 is connected to a rack 25, wherein the rack 25 is meshed and connected with the sleeve gear 24. Two rough oil cylinders 15 are arranged inside the side box 6. The rough oil cylinder 15 includes a telescopic shaft 13, wherein the other end of the telescopic shaft 13 of the two rough oil cylinders 15 is fixedly mounted with an extruded plate 11, and a suction screw insertion hole 12 is opened in the middle of the extruded plate 11; a spring 14 is also sleeved on the surface of the telescopic shaft 13; an oil pipe 16 is connected between the tail end of the rough oil cylinder 15 and the tail end of the fine oil cylinder 21.

[0045] According to the embodiments 1-3, it can be known that the working principle is as follows: after the automatic screw locking machine is started, the horizontal moving platform 7 can drive the screw suction tube 10 to move left and right, so that the screw suction tube 10 can move to the top of the screw suction hole 12, and then the up-and-down moving screw lock 8 moves downward to be inserted into the screw suction hole 12. When the up-and-down moving screw lock 8 moves downward, the extrusion tube 9 will be restricted above the screw suction hole 12 (such as Figure 2 , 3 As shown), the suction screw tube 10 is inserted into the suction screw insertion hole 12.

[0046] After that, the extrusion tube 9 will continue to move downward, and squeeze and drive the squeezed plate 11 to move downward, so that the telescopic shafts 13 at both ends of the squeezed plate 11 will squeeze the hydraulic oil inside the thick oil cylinder 15. The hydraulic oil inside the thick oil cylinder 15 will enter the interior of the fine oil cylinder 21 through the oil pipe 16 (such as Figure 4 , 5 As shown), the telescopic shaft of the thin oil cylinder 21 will be squeezed out and drive the rack 25 to move outward (when the squeezing tube 9 leaves the squeezed plate 11, the spring 14 will squeeze the squeezed plate 11 to reset it. During this process, the hydraulic oil in the thick oil cylinder 15 is re-absorbed, and the thin oil cylinder 21 will shrink and recover).

[0047] When the rack 25 moves outward, it drives the sleeve gear 24 to rotate clockwise (such as Figure 5 , 7 As shown in the figure, the clockwise rotating sleeve gear 24 will drive the threaded rod 36 to rotate clockwise under the action of the movable latch 32 (when the fine oil cylinder 21 will shrink and the rack 25 will recover, the sleeve gear 24 will rotate counterclockwise but the threaded rod 36 will not rotate). The rotation of the threaded rod 36 will drive the rotating disk 28 to rotate through the driving gear 22 and the rotating shaft 23 (as shown in the figure). Figure 6The power supply electrode 37 supplies power to only one side of the electromagnet 29, so that the rotation of the electromagnet 29 on the powered side drives the screw in the transfer tube 38 to move, and when the electromagnet 29 stops rotating, it also blocks the screw from sliding out of the screw outlet 33.

[0048] The motor 20 can drive the lifting plate 42 to move up and down by rotating the cam 43 (such as Figure 8 , 9 As shown), the vibration energy of the lifting plate 42 is transmitted to the vibration tube 18 through the vibration rod 19 (as shown in FIG. Figure 8 As shown, the hose 27 can isolate the vibration of the vibration tube 18 from being transmitted to the adapter tube 38), so that the screws in the screw placement slot 17 can be "shaken" into the vibration tube 18 (as shown in FIG. Figure 5 shown).

[0049] When the screw in the forward or reverse direction enters the screw outlet 33, the nut will be stuck above the pin groove 44, and the threaded nail part will fall into the pin groove 44, so that the nut of the screw is always facing upward.

[0050] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A four-axis automatic screw locking machine, comprising a machine base (1), characterized in that: Two longitudinal movable structures (3) are fixedly mounted on the surface of the machine base (1), and a material plate platform (4) capable of longitudinal movement is provided on the surface of the longitudinal movable structure (3). A transverse movable structure (2) is provided above the machine base (1), and a transverse movable platform (7) capable of transverse movement is provided on the surface of the transverse movable structure (2), and a vertical travel screw lock (8) capable of vertical movement is provided at the bottom end of the transverse movable platform (7); The bottom end of the up-and-down moving screw lock (8) is provided with an extrusion tube (9) and a screw suction tube (10); a screw supply box (5) is provided in the middle of the surface of the machine base (1); and side boxes (6) are provided on both sides of the screw supply box (5); The screw supply box (5) includes a screw placement groove (17), a vibration tube (18), a hose (27) and a transfer tube (38), wherein the end of the transfer tube (38) penetrates into the side box (6).

2. The four-axis automatic screw locking machine according to claim 1 is characterized in that: One end of the vibration tube (18) passes through the screw placement groove (17), and one end of the vibration tube (18) is provided with a screw entry hole (30) and a vibration pick (31), wherein the vibration tube (18) is fixedly connected to the inner wall of the screw supply box (5) via the vibration pick (31).

3. The four-axis automatic screw locking machine according to claim 2 is characterized in that: A limit plate (39) and a support rod (41) are provided inside the screw supply box (5) and below the vibration tube (18), wherein the limit plate (39) is fixedly installed inside the screw supply box (5) via the support rod (41); The support rod (41) is sleeved with a lifting plate (42) that can move up and down, and a second spring (40) is sleeved on the surface of the support rod (41) and located between the limit plate (39) and the lifting plate (42).

4. The four-axis automatic screw locking machine according to claim 3 is characterized in that: Two vibration rods (19) are arranged above the lifting plate (42), and the top ends of the two vibration rods (19) penetrate to the top of the limiting plate (39) and are fixedly connected to the vibration tube (18); A motor (20) is also provided below the limiting plate (39), and an output shaft sleeve of the motor (20) is provided with a cam (43), wherein the cam (43) is in pressure contact with the lifting plate (42).

5. The four-axis automatic screw locking machine according to claim 1 is characterized in that: A rotatable rotating disk (28) is provided inside the screw supply box (5) and below the transfer tube (38), a rotating sleeve (26) is provided below the rotating disk (28), and the rotating disk (28) also includes a rotating shaft (23) at the center; An electromagnet (29) is provided on the surface of the rotating disk (28), and a contact electrode (35) is provided on the surface of the rotating sleeve (26) at a position corresponding to the electromagnet (29); A power supply electrode (37) for supplying power is also provided inside the screw supply box (5), wherein the power supply electrode (37) only contacts the contact electrode (35) near the corner of the transfer tube (38).

6. The four-axis automatic screw locking machine according to claim 5 is characterized in that: The bottom end of the rotating shaft (23) is sleeved with a driving gear (22), one side of the driving gear (22) is rotatably connected to a threaded rod (36), wherein the other end surface of the threaded rod (36) is sleeved with a socket gear (24); The sleeve gear (24) includes a one-way groove inside, and a movable latching tooth (32) and a torsion spring (34) are provided on the surface of the threaded rod (36) near the sleeve gear (24), wherein the movable latching tooth (32) is latched in the one-way groove.

7. The four-axis automatic screw locking machine according to claim 6, characterized in that: A fine oil cylinder (21) is provided inside the screw supply box (5) and above the sleeve gear (24). The output shaft of the fine oil cylinder (21) is connected to a rack (25), wherein the rack (25) is meshedly connected to the sleeve gear (24).

8. The four-axis automatic screw locking machine according to claim 7, characterized in that: Two rough oil cylinders (15) are arranged inside the side box (6), and the rough oil cylinders (15) include telescopic shafts (13), wherein a squeezed plate (11) is fixedly mounted at the other end of the telescopic shafts (13) of the two rough oil cylinders (15), and a suction screw insertion hole (12) is opened in the middle of the squeezed plate (11); A spring (14) is also sleeved on the surface of the telescopic shaft (13); an oil pipe (16) is connected between the tail end of the thick oil cylinder (15) and the tail end of the thin oil cylinder (21).

9. The four-axis automatic screw locking machine according to claim 1, characterized in that: A screw outlet (33) is provided above the end of the adapter tube (38), and a pin slot (44) is provided below the end of the adapter tube (38).

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