Turnover positioning mechanism of assembly machine

Abstract

The utility model relates to the technical field of assembly machines, in particular to a turnover positioning mechanism of an assembly machine, which comprises a base plate, a rotating disc is driven at the front end of the base plate through a rotating motor, pneumatic clamping blocks are symmetrically arranged on the rotating disc, and auxiliary supporting mechanisms are arranged at the bottom ends of the pneumatic clamping blocks. The auxiliary supporting mechanism is composed of a support, a servo motor and a supporting corbel, the support is arranged at the bottom of the pneumatic clamping block, the servo motor is installed on the outer wall of the front end of the support, the inner end of the supporting corbel is connected with an output shaft of the servo motor, and balancing weights capable of being adjusted up and down are arranged at the upper end and the lower end of the back side of the rotating disc. A fixing ring is arranged outside the rotating disc, and auxiliary clamping and stopping mechanisms are arranged on the two sides of the top of the fixing ring. The turnover positioning mechanism of the assembly machine can effectively avoid shaking and inclining of workpieces in the turnover process, meanwhile, it is ensured that turnover torque is evenly distributed, the burden of a driving system is relieved, and the service life of mechanical parts is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of assembly machine, concretely is a kind of turnover positioning mechanism of assembly machine. BACKGROUND

[0002] In modern industrial production, the application of automatic assembly line is increasingly widespread, especially in the automobile manufacturing, electronic equipment assembly and other industries. As one of the key equipment on the automatic production line, the function of assembly machine is not limited to simple handling and installation of parts, but also involves the accurate positioning and turnover operation of complex-shaped workpieces. In order to meet the assembly needs of different workpieces, assembly machine is usually equipped with various positioning and turnover mechanisms to ensure that the workpiece can accurately complete the assembly process.

[0003] The design of existing assembly machine turnover positioning mechanism often relies on single-point fixed support structure, which is prone to instability during workpiece turnover, such as shaking, tilting, etc. This not only affects the final positioning accuracy of the workpiece, but also may cause scratches or other forms of physical damage to the workpiece surface. Moreover, when the weight of the workpiece is large, the lack of effective dynamic balance adjustment mechanism makes the turnover torque distribution uneven, increases the burden of the driving system, and even may cause premature wear or damage of mechanical parts. These problems seriously affect the assembly quality and production efficiency. SUMMARY

[0004] The utility model aims at providing a kind of turnover positioning mechanism of assembly machine to solve the problem of instability in turnover process and lack of effective dynamic balance adjustment mechanism of current assembly machine turnover positioning mechanism proposed in the above background technology.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a kind of turnover positioning mechanism of assembly machine, including base plate, the front end of the base plate is driven with rotary disc by rotary motor, the rotary disc is symmetrically equipped with pneumatic clamping block, the bottom end of the pneumatic clamping block is equipped with auxiliary support mechanism, the auxiliary support mechanism is composed of support, servo motor and support arm, the support is arranged at the bottom of pneumatic clamping block, the servo motor is installed on the front end outer wall of support, the inner end of support arm is connected with the output shaft of servo motor, and the upper and lower ends of the back side of rotary disc are equipped with counterweight that can be adjusted up and down, and the outside of rotary disc is equipped with solid ring, the both sides of the top of solid ring are equipped with auxiliary clamping mechanism.

[0006] Preferably, the upper and lower ends of the rotary disc are equipped with guide column through through hole, and the outside of the guide column is equipped with positioning block, and the rear side of the positioning block is fixedly connected with the counterweight.

[0007] Preferably, the auxiliary locking mechanism comprises a fixed block, a movable rod, a locking block, a pneumatic cylinder and a limiting spring, the fixed block is symmetrically fixed on both sides of the top end of the base plate, the movable rod is movably inserted into the fixed block, the bottom end of the movable rod is movably inserted into the fixed ring and is fixedly connected with the locking block, the edges of the upper and lower ends of the rotating disc are symmetrically provided with the locking holes matched with the structure of the locking block, the pneumatic cylinder is fixed on the fixed block and the output end is fixedly connected with the middle part of the movable rod, and the limiting spring is sleeved on the outside of the upper end of the movable rod.

[0008] Preferably, the clamping surface of the pneumatic clamping block is provided with a groove, and a plurality of unit clamping blocks are arranged in the groove of the clamping surface of the pneumatic clamping block.

[0009] Preferably, the top of the pneumatic clamping block is provided with a plurality of screw sleeves, the inside of the screw sleeve is inserted with a positioning bolt through a threaded structure, and the top of the outside of the unit clamping block is provided with a threaded ring matched with the structure of the positioning bolt.

[0010] Preferably, the outside of the rotating disc extends to the outside of the fixed ring, and the outer wall of the rotating disc and the inside of the pneumatic clamping block form a sliding connection.

[0011] Compared with the prior art, the beneficial effects of the utility model are that: the turnover positioning mechanism of the assembly machine can effectively avoid the shaking and tilting phenomenon of the workpiece in the turnover process, reduce the scratching and other physical damage of the surface of the workpiece, ensure the uniform distribution of the turnover torque, reduce the burden of the driving system, and prolong the service life of the mechanical parts. The turnover positioning mechanism of the assembly machine can provide additional support when the workpiece is heavy through the auxiliary support mechanism of the optimized design, enhance the stability of the system, and the adjustable design of the two counterweights enables the operator to pre-adjust the counterweight position according to the weight and size of the actual workpiece, realize the best dynamic balance state, and the design of the auxiliary locking mechanism further ensures the accurate positioning of the workpiece after turnover. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a structural schematic view of the turnover positioning mechanism of the assembly machine of the utility model;

[0013] Figure 2 It is a structural schematic view of the auxiliary support mechanism of the turnover positioning mechanism of the assembly machine of the utility model; Figure 1 It is an enlarged structural schematic view of A in the figure;

[0014] Figure 3 It is a top view structural schematic view of the pneumatic clamping block of the turnover positioning mechanism of the assembly machine of the utility model;

[0015] Figure 4 It is a back side structural schematic view of the rotating disc of the turnover positioning mechanism of the assembly machine of the utility model.

[0016] In the figure: 1, base plate; 2, rotating disc; 3, pneumatic clamping block; 31, unit clamping block; 32, screw sleeve; 33, positioning bolt; 34, screw ring; 4, fixed ring; 5, auxiliary supporting mechanism; 51, support; 52, servo motor; 53, supporting arm; 6, counterweight; 61, guide column; 62, positioning block; 7, auxiliary clamping mechanism; 71, fixed block; 72, movable rod; 73, locking block; 74, air cylinder; 75, limiting spring. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0018] Please refer to Figures 1-4The utility model provides a technical scheme: a kind of overturning positioning mechanism of assembly machine, including substrate 1, and the four corners of substrate 1 are equipped with mounting hole, and the front end of substrate 1 is driven with rotary disc 2 by rotating motor, this rotating motor is fixed in the back of substrate 1 and output end is fixedly connected with the center of rotary disc 2, and symmetrically equipped with pneumatic clamping block 3 on rotary disc 2, and pneumatic clamping block 3 is driven by hydraulic cylinder fixed on rotary disc 2, namely mutually far away or close, and the bottom end of pneumatic clamping block 3 is equipped with auxiliary support mechanism 5, and auxiliary support mechanism 5 is composed of support 51, servo motor 52 and support arm 53, and support 51 is welded and fixed in the bottom of pneumatic clamping block 3, and servo motor 52 is installed on the front end outer wall of support 51 by bolt, and the inner end of support arm 53 is connected with the output shaft of servo motor 52, and the upper and lower ends of the back of rotary disc 2 are equipped with counterweight 6 that can be adjusted up and down, and the outside of rotary disc 2 is equipped with solid ring 4, and the inner side of solid ring 4 is welded and fixed with the outer wall of substrate 1, and the two sides of the top of solid ring 4 are equipped with auxiliary clamping mechanism 7, and the substrate 1 of this structure can be installed in the appropriate position of assembly machine through mounting hole, and two pneumatic clamping blocks 3 are driven by hydraulic cylinder and are responsible for clamping workpiece, and the rotating motor of the back of substrate 1 drives rotary disc 2 to rotate and overturns operation, when workpiece is heavy, the servo motor 52 of auxiliary support mechanism 5 can be started, and support arm 53 is driven to tilt and close, and the support intensity to workpiece is increased, to reduce the shaking and tilting risk of workpiece in overturning process, and two counterweights 6 can be adjusted up and down on rotary disc 2 as required, to reach the effect of dynamic balance, so that overturning torque is evenly distributed, and the burden of driving system is reduced, and auxiliary clamping mechanism 7 plays the role of fast auxiliary positioning after rotary disc 2 overturns, to ensure the accuracy of workpiece in overturning process, to effectively avoid the shaking and tilting phenomenon of workpiece in overturning process, to reduce the scratch and other physical damage on the surface of workpiece, to improve assembly quality, to solve the problems of instability in overturning process and lack of effective dynamic balance adjustment mechanism in the overturning positioning mechanism of assembly machine in prior art, and the upper and lower ends of rotary disc 2 are equipped with guide column 61 through through hole, and guide column 61 is equipped with positioning block 62 outside, positioning block 62 is connected with locking screw through screw structure, and the rear side of positioning block 62 is fixedly connected with counterweight 6, when the position of counterweight 6 needs to be adjusted, the locking screw on positioning block 62 is loosened, positioning block 62 is manually adjusted to the required position, and the locking screw on positioning block 62 is tightened again, to ensure that positioning block 62 is fixed on guide column 61 firmly, positioning block 62 drives counterweight 6 to be adjusted in place at this time, through this structure design, the position of counterweight 6 can be accurately controlled, dynamic balance of rotary disc 2 under different loads is realized, vibration and unbalanced torque in rotating process are effectively reduced, auxiliary clamping mechanism 7 includes solid block 71, movable rod 72, lock block 73, pneumatic cylinder 74 and limit spring 75, solid block 71 is symmetrically and obliquely welded and fixed on the two sides of the top end of substrate 1,The movable rod 72 is movably inserted into the fixed block 71, and the bottom end of the movable rod 72 is movably inserted into the fixed ring 4 and fixedly connected with the lock block 73, the edges of the upper and lower ends of the rotating disc 2 are symmetrically provided with the sockets matched with the structure of the lock block 73, the air cylinder 74 is welded and fixed on the fixed block 71 through the connecting piece and fixedly connected with the middle part of the movable rod 72, and the limiting spring 75 is sleeved outside the upper end of the movable rod 72. The output end of the air cylinder 74 can drive the movable rod 72 to move up and down in the fixed block 71, the bottom end of the movable rod 72 drives the lock block 73 to move to the socket on the rotating disc 2, the lock block 73 is accurately embedded into the socket on the edge of the upper and lower ends of the rotating disc 2 after the rotating disc 2 is turned over by a predetermined angle, the quick positioning of the rotating disc 2 is realized, the limiting spring 75 can limit the movable rod 72 on the fixed block 71, so that the movable rod 72 is more stable during movement, and when the lock is needed to be unlocked, the air cylinder 74 reversely acts to pull the movable rod 72 to move upward, the lock block 73 is separated from the socket, and the locking of the rotating disc 2 is released. The clamping surfaces of the pneumatic clamping block 3 are provided with grooves, and the grooves in the clamping surface of the pneumatic clamping block 3 are provided with the air cylinder 74. The top of the pneumatic clamping block 3 is welded and fixed with three screw sleeves 32, the inside of the screw sleeve 32 is inserted with a positioning bolt 33 through a threaded structure, and the top of the outside of the unit clamping block 31 is welded and fixed with a screw ring 34 matched with the structure of the positioning bolt 33. The operator can adjust the positioning bolt 33 on the screw sleeve 32 in advance to make it cooperatively connected with the screw ring 34 on the corresponding unit clamping block 31, so that the different widths of each unit clamping block 31 extending outside the groove of the clamping surface of the pneumatic clamping block 3 can be controlled to change the effective clamping surface width of the pneumatic clamping block 3 to adapt to the clamping requirements of workpieces of different sizes and shapes. That is, when the clamping surface needs to be adjusted, the positioning bolt 33 is loosened, the position of the unit clamping block 31 is adjusted according to the specific requirements of the workpiece, and then the positioning bolt 33 is tightened again to ensure that the unit clamping block 31 is stable and immovable, thereby not only improving the flexibility and adaptability of the pneumatic clamping block 3, but also enhancing the stability and safety of clamping, improving the efficiency and quality of assembly operation. The outside of the rotating disc 2 extends to the outside of the fixed ring 4, and the outer wall of the rotating disc 2 and the inside of the pneumatic clamping block 3 form a sliding connection. When the rotating disc 2 rotates and turns over, the pneumatic clamping block 3 can smoothly slide along the outer wall of the rotating disc 2 to ensure the stability and reliability of clamping workpieces to adapt to workpieces of different diameters.

[0019] Working principle: when using the turnover positioning mechanism of the assembly machine, first, adjust the three unit clamping blocks 31 according to the specifications of the workpiece, adjust the unit clamping block 31 by rotating the adjusting positioning bolt 33 on the threaded sleeve 32 until each adjusting unit clamping block 31 extends to the appropriate width outside the pneumatic clamping block 3 clamping surface groove, then use the positioning bolt 33 and the threaded ring 34 to screw and fix, when the unit clamping block 31 is adjusted, loosen the locking screw on the positioning block 62, manually adjust the position of the positioning block 62 on the guide column 61 until the positioning block 62 drives the counterweight block 6 to adjust to the position, then place the workpiece between the pneumatic clamping blocks 3, drive the pneumatic clamping blocks 3 to approach each other by controlling the hydraulic cylinder, realize stable clamping of the workpiece, when the workpiece needs to be turned over, start the rotary motor at the back of the base plate 1, the rotating disc 2 starts to rotate, drives the pneumatic clamping blocks 3 and the clamped workpiece to turn over together, for heavy workpieces, start the servo motor 52 of the auxiliary support mechanism 5, the servo motor 52 drives the support arm 53 on the support 51 to tilt and close, and provides auxiliary support, when the rotating disc 2 reaches the predetermined turning angle, the output end of the air cylinder 74 pushes the movable rod 72 to move downward, so that the lock block 73 is embedded in the bayonet of the upper and lower edges of the rotating disc 2, realizes rapid positioning, and the limiting spring 75 provides stable limiting action in the process, when the workpiece processing is completed, the air cylinder 74 reverses the action, pulls the movable rod 72 to move upward, so that the lock block 73 is pulled out of the bayonet, and the locking of the rotating disc 2 is released, then the rotary motor reverses the rotation, restores the workpiece to the initial position, thereby completing a series of work.

[0020] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. An overturning positioning mechanism of an assembly machine, comprising a base plate (1), a rotary disc (2) is driven by a rotary motor at the front end of the base plate (1), and a pneumatic clamping block (3) is symmetrically arranged on the rotary disc (2), characterized in that: The bottom end of the pneumatic clamp block (3) is provided with an auxiliary supporting mechanism (5), the auxiliary supporting mechanism (5) is composed of a support (51), a servo motor (52) and a supporting arm (53), the support (51) is arranged at the bottom of the pneumatic clamp block (3), the servo motor (52) is installed on the front end outer wall of the support (51), the inner end of the supporting arm (53) is connected with the output shaft of the servo motor (52), the upper and lower ends of the back side of the rotating disc (2) are provided with counterweight blocks (6) which can be adjusted up and down, and the outer part of the rotating disc (2) is provided with a fixed ring (4), and the two sides of the top of the fixed ring (4) are provided with auxiliary clamping mechanisms (7).

2. A flip positioning mechanism for an assembly machine according to claim 1, wherein: The upper and lower ends of the rotating disc (2) are provided with guide columns (61) through through holes, and the outer part of the guide column (61) is provided with a positioning block (62), and the rear side of the positioning block (62) is fixedly connected with the counterweight block (6).

3. The flip positioning mechanism for an assembly machine of claim 1, wherein: The auxiliary clamping mechanism (7) comprises a fixed block (71), a movable rod (72), a lock block (73), a gas cylinder (74) and a limiting spring (75), the fixed block (71) is symmetrically fixed on the two sides of the top end of the base plate (1), the movable rod (72) is movably inserted into the inside of the fixed block (71), the bottom end of the movable rod (72) is movably inserted into the fixed ring (4) and is fixedly connected with the lock block (73), the edges of the upper and lower ends of the rotating disc (2) are symmetrically provided with a clamping hole which is consistent with the structure of the lock block (73), the gas cylinder (74) is fixed on the fixed block (71) and the output end is fixedly connected with the middle part of the movable rod (72), and the limiting spring (75) is sleeved on the outside of the upper end of the movable rod (72).

4. The flip positioning mechanism for an assembly machine of claim 1, wherein: The clamping surface of the pneumatic clamp block (3) is provided with a groove, and a plurality of unit clamping blocks (31) are arranged in the groove of the clamping surface of the pneumatic clamp block (3).

5. A flip positioning mechanism for an assembly machine according to claim 4, wherein: The top of the pneumatic clamp block (3) is provided with a plurality of screw sleeves (32), the inside of the screw sleeve (32) is inserted with a positioning bolt (33) through a threaded structure, and the top of the outside of the unit clamping block (31) is provided with a screw ring (34) which is consistent with the structure of the positioning bolt (33).

6. The flip positioning mechanism of an assembly machine according to claim 1, characterized in that: The outer side of the rotating disc (2) extends to the outside of the fixed ring (4), and the outer wall of the rotating disc (2) and the inner side of the pneumatic clamp block (3) form a sliding connection.

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