Feeding mechanism with centering and positioning functions

Abstract

The utility model discloses a feeding mechanism with centering and positioning functions. The feeding mechanism comprises a stock bin mechanism arranged on the upper portion of a bottom plate. The stock bin mechanism is provided with a stock bin, clamping plates, a first guide rod, a push rod and a connecting rod combination, the stock bin is arranged on the bottom plate, the clamping plates are arranged in pairs and penetrate through the stock bin to extend upwards, the first guide rod is fixed to the bottom plate, the push rod is slidably connected with the first guide rod, and the first guide rod, the push rod and the connecting rod combination are located between the stock bin and the bottom plate; the other end of the connecting rod combination is rotationally connected with the other clamping plate; when the push rod is moved, the paired clamping plates simultaneously move in the middle or reversely move away from the middle. According to the feeding mechanism with the centering and positioning functions, steel backs are centered and positioned to specific positions, so that the consistency of the center positions of the steel backs can be kept even if the specifications and the sizes of the steel backs are different. And after the steel backing of the stock bin is remodeled, the feeding gripper can also grab a specific position, so that the grabbing accuracy and efficiency are greatly improved.

Description

Technical Field

[0001] The utility model relates to a feeding mechanism, in particular to a feeding mechanism with a centering and positioning function. Background Art

[0002] The steel back, as the key support of the brake pad, its main task is to stabilize the friction material so that it can be smoothly installed in the structure of the braking system. It is usually made of high-strength steel plates, with complex processes and strict requirements.

[0003] In the steel back feeding and loading mechanism in the conventional hot pressing and forming production of automotive brake pads, the position of the steel back is usually located by its specific outer contour. However, in the case of simultaneously feeding multiple steel backs and being compatible with multiple specifications and sizes, the relative positions between the steel backs change with the change of the model size. The gripper cannot be easily adapted and quickly grasped, and corresponding grasping program adjustments or replacements need to be made according to different specifications of the steel back, increasing the grasping cycle time, which greatly reduces the production efficiency.

[0004] Therefore, it is necessary to solve the above technical problems. Summary of the Invention

[0005] The utility model aims at the above technical problems and provides a feeding mechanism with a centering and positioning function. By centering and positioning the steel backs to specific positions respectively, even if the specifications and sizes of the steel backs are different, the consistency of their central positions can be maintained. After the steel backs in the bin are changed in type, the feeding gripper only needs to grasp at a specific position, greatly improving the grasping accuracy and efficiency.

[0006] To achieve the above object, the technical solution of the utility model is as follows:

[0007] A feeding mechanism with a centering and positioning function includes a bottom plate and a bin mechanism. The bin mechanism is arranged on the upper part of the bottom plate. The bin mechanism is provided with a bin, clamping plates, a first guide rod, a push rod and a connecting rod assembly. The bin is arranged on the bottom plate. The clamping plates are arranged in pairs and extend upward through the bin. The first guide rod is fixed on the bottom plate. The push rod is slidably connected to the first guide rod. The first guide rod, the push rod and the connecting rod assembly are respectively located between the bin and the bottom plate. One end of the connecting rod assembly is rotatably connected to one clamping plate, and the other end is rotatably connected to the other clamping plate. Moving the push rod, the paired clamping plates move centering simultaneously or move away from the middle in the opposite direction.

[0008] The feeding mechanism with centering positioning function drives the paired clamping plates to move centrically simultaneously through the linkage combination. The clamping plates hold the steel back and position it centrically to a specific position, so that even if the specifications and sizes of the steel backs are different, their central positions can still be kept consistent. After the steel backs in the magazine are changed, the feeding gripper only needs to grab at a specific position, greatly improving the accuracy and efficiency of grabbing.

[0009] In a further optimized solution, the linkage combination includes a first link, a second link, and a third link that are rotatably connected end to end in sequence. The central position of the middle second link is rotatably fixed to the bottom plate. The second link is fixed in the middle. When it rotates, it can drive the first link and the third link to rotate simultaneously, and the free ends of the two generate the same displacement, so that the paired clamping plates move centrically simultaneously or move away from the middle in the opposite direction. This linkage combination has a simple structure, is easy to manufacture, and has a low cost.

[0010] In a further optimized solution, a lifting mechanism is further included. The lifting mechanism is arranged below the bottom plate and penetrates the bottom plate to connect to the magazine, driving the magazine to move up and down. This lifting mechanism can realize the lifting supply of the steel backs in the magazine, and can lift the steel backs to the feeding position for the gripper to grab and supply to the next station.

[0011] In a further optimized solution, the lifting mechanism includes a stepping motor, a ball screw, a screw nut, a driving synchronous pulley, a driven synchronous pulley, a synchronous belt, and a second guide rod;

[0012] The stepping motor is fixed below the bottom plate and connected to the driving synchronous pulley. The ball screw penetrates the bottom plate and is connected to the magazine. The screw nut is connected to the driven synchronous pulley. The synchronous belt connects the driving synchronous pulley and the driven synchronous pulley. There are two second guide rods, which are arranged on both sides of the ball screw and connected to the magazine. The stepping motor drives the ball screw to drive the entire magazine of the steel backs to lift or lower.

[0013] In a further optimized solution, a guide rail slider mechanism is further included. The upper part of the guide rail slider mechanism sets the bottom plate to push it to switch between the loading position and the replenishing position for material grabbing. The guide rail slider mechanism realizes the switching between the loading position and the replenishing position for steel back grabbing, which can improve the safety of workers' operations.

[0014] In a further optimized solution, the guide rail slider mechanism includes a guide rail, a slider, and a cylinder. The slider is fixed below the bottom plate and located on the guide rail, and the cylinder is connected to the bottom plate. The cylinder is used to push the magazine to switch between the loading position and the replenishing position, which is convenient and fast.

[0015] The further optimized solution also includes a feeding limit sensor for detecting the material at the grasping station, as well as an upper limit sensor and a lower limit sensor for detecting the up and down movement of the magazine. The lifting mechanism can lift the steel back to the detection position of the feeding limit sensor for the gripper to grasp and supply to the next station; the upper limit sensor and the lower limit sensor are set to prevent the lifting movement position of the magazine from exceeding the specified range.

[0016] In the further optimized solution, fixing plates are respectively provided on the bottom plates at both ends of the push rod, and locking screws are provided on the fixing plates to press and fix the push rod. After the clamping plate centers and positions the steel back to a specific position, the push rod is pressed and fixed by the locking screw, and the position of the clamping plate is thus fixed, with a simple structure and convenient use.

[0017] The further optimized solution includes four pairs of paired clamping plates, which are arranged horizontally side by side in two perpendicular directions; there are two first guide rods, which are arranged side by side on both sides of the bottom plate; there are four push rods, which are slidably connected vertically side by side on the two first guide rods. The setting of the four pairs of clamping plates meets the clamping requirements of steel backs with different specifications and sizes, and can realize the lifting and supply of steel backs one by one in a magazine type for four magazines at the same time.

[0018] The further optimized solution also includes a frame, on which four of the above-mentioned feeding mechanisms with centering and positioning functions are arranged side by side, and spacer plates are provided at both ends; dust covers are respectively provided on both sides of the bottom plate on the frame.

[0019] The utility model has the following technical advantages compared with the prior art:

[0020] 1. The feeding mechanism with centering and positioning functions solves the problem that the compatibility of the magazine for steel back feeding is insufficient and it cannot meet the rapid feeding requirements of steel back sheets with different sizes at the same time;

[0021] 2. The feeding mechanism with centering and positioning functions solves the problem that a general steel back magazine cannot position workpieces with different specifications and sizes to a specific position, resulting in the gripper being unable to grasp simultaneously and reducing the feeding efficiency;

[0022] 3. The feeding mechanism with centering and positioning functions reduces the cost of steel back feeding. There is no need to make different positioning fixtures according to different models of steel backs, which causes problems such as increased management difficulty and occupying storage space, and at the same time improves production efficiency;

[0023] 4. The centering and positioning of the feeding mechanism with centering and positioning functions uses a link mechanism, with a compact, simple and reliable structure. Description of the Drawings

[0024] Figure 1 is a perspective view of a specific embodiment of a feeding mechanism with a working unit function of the utility model;

[0025] Figure 2 is Figure 1 Stereogram of the back canceling the cylinder cover plate;

[0026] Figure 3 is Figure 1 front view of;

[0027] Figure 4 is Figure 3 top view of;

[0028] Figure 5 is Figure 3 left view of;

[0029] Figure 6 is Figure 1 Stereogram of a single feeding mechanism in canceling the bin and the spacer;

[0030] Figure 7 is Figure 1 Stereogram of a single feeding mechanism in;

[0031] Figure 8 is Figure 7 front view of;

[0032] Figure 9 is Figure 8 A - A sectional view of;

[0033] In the figure: bottom plate 10, bin mechanism 20, bin 21, clamping plate 22, first guide rod 23, push rod 24, connecting rod assembly 25, first connecting rod 25a, second connecting rod 25b, third connecting rod 25c, support column 25d, fixing plate 26, locking screw 27, feeding limit sensor 28, lifting mechanism 30, stepping motor 31, ball screw 32, screw nut 33, driving synchronous pulley 34, driven synchronous pulley 35, synchronous belt 36, second guide rod 37, upper limit sensor 38, lower limit sensor 39, guide rail slider mechanism 40, guide rail 41, slider 42, cylinder 43, cylinder head 44, frame 50, support foot 51, spacer 60, dust cover 70. Specific embodiments

[0034] The present utility model will be further described in detail below with reference to the embodiments in the drawings.

[0035] As Figures 1 to 9 shown, a specific embodiment of a feeding mechanism with a centering and positioning function of the present utility model.

[0036] As Figures 6 to 9As shown, the feeding mechanism with centering and positioning function of this embodiment includes a bottom plate 10 and a bin mechanism 20. The bin mechanism 20 is arranged on the upper part of the bottom plate 10. The bin mechanism 20 is provided with a bin 21, clamping plates 22, a first guide rod 23, a push rod 24 and a connecting rod assembly 25. The bin 21 is arranged on the bottom plate 10. The clamping plates 22 are arranged in pairs and extend upward through the bin 21. The first guide rod 23 is fixed on the bottom plate 10. The push rod 24 is slidably connected to the first guide rod 23. The first guide rod 23, the push rod 24 and the connecting rod assembly 25 are respectively located between the bin 21 and the bottom plate 10. One end of the connecting rod assembly 25 is rotatably connected to one clamping plate 22, and the other end is rotatably connected to the other clamping plate 22. Moving the push rod 24, the paired clamping plates 22 move centering simultaneously or move away from the middle in the opposite direction.

[0037] The feeding mechanism with centering and positioning function drives the paired clamping plates to move centering simultaneously through the connecting rod assembly. The clamping plates clamp the steel back and center it to a specific position, so that even if the specifications and sizes of the steel backs are different, the consistency of their central positions can be maintained. After changing the type of steel back in the bin, the feeding gripper only needs to grab at a specific position, greatly improving the accuracy and efficiency of grabbing.

[0038] As Figure 6 and Figure 7 shown, the feeding mechanism with centering and positioning function includes four pairs of clamping plates 22 arranged in pairs, horizontally juxtaposed perpendicular to each other. There are two first guide rods 23, juxtaposed on both sides of the bottom plate 10. There are four push rods 24, slidably connected vertically and juxtaposed to the two first guide rods 23. The two middle push rods 24 are arranged with breaks to avoid other parts. The setting of the four pairs of clamping plates meets the clamping requirements of steel backs with different specifications and sizes, and can realize the lifting supply of steel backs one by one in a magazine type for four bins simultaneously.

[0039] As Figure 6 and Figure 7 shown, the connecting rod assembly 25 includes a first connecting rod 25a, a second connecting rod 25b and a third connecting rod 25c rotatably connected end to end in sequence. The central position of the middle second connecting rod 25b is rotatably fixed to the bottom plate 10 through a pillar 25d. The second connecting rod 25b is fixed in the middle. When it rotates, it can drive the first connecting rod 25a and the third connecting rod 25c to rotate simultaneously, and the free ends of both generate the same displacement, so that the paired clamping plates 22 move centering simultaneously or move away from the middle in the opposite direction. This connecting rod assembly has a simple structure, is easy to manufacture and has a low cost.

[0040] As Figure 7 shown, the feeding mechanism with centering and positioning function further includes a lifting mechanism 30. The lifting mechanism 30 is arranged under the bottom plate 10 and penetrates the bottom plate 10 to connect the bin 21, driving the bin 21 to move up and down. This lifting mechanism can realize the lifting supply of the steel backs in the bin, and can lift the steel backs to the feeding position for the gripper to grab and supply to the next working station.

[0041] As Figure 8 and Figure 9 shown, the lifting mechanism 30 includes a stepper motor 31, a ball screw 32, a screw nut 33, a driving synchronous pulley 34, a driven synchronous pulley 35, a synchronous belt 36 and a second guide rod 37.

[0042] As Figure 8 and Figure 9 shown, the stepper motor 31 is fixed to the lower part of the bottom plate 10 and connected to the driving synchronous pulley 34. The ball screw 32 passes through the bottom plate 10 and is connected to the bin 21. The screw nut 33 is connected to the driven synchronous pulley 35, and the synchronous belt 36 connects the driving synchronous pulley 34 and the driven synchronous pulley 35. There are two second guide rods 37, which are located on both sides of the ball screw 32 and connected to the bin 21. A linear bearing matching with the second guide rod 37 is fixedly penetrated on the bottom plate 10, and the second guide rod 37 passes through the linear bearing and moves up and down. The stepper motor drives the ball screw to drive the bin of the steel back to lift or lower.

[0043] As Figure 7 shown, the feeding mechanism with centering and positioning function further includes a guide rail and slider mechanism 40. The upper part of the guide rail and slider mechanism 40 sets the bottom plate 10 to push it to switch between the feeding position and the replenishing position for material grasping. The guide rail and slider mechanism realizes the switching between the steel back grasping feeding position and the replenishing position, which can improve the safety of workers' operation.

[0044] As Figure 7 shown, the guide rail and slider mechanism 40 includes a guide rail 41, a slider 42 and a cylinder 43. The slider 42 is fixed to the lower part of the bottom plate 10 and located on the guide rail 41, and the cylinder 43 is connected to the bottom plate 10. The cylinder is used to push the bin to switch between the feeding position and the replenishing position, which is convenient and fast.

[0045] As Figure 9 shown, the feeding mechanism with centering and positioning function further includes a feeding limit sensor 28 for detecting that the material is in the grasping station, and an upper limit sensor 38 and a lower limit sensor 39 for detecting the up and down movement of the bin 21. The lifting mechanism can lift the steel back to the detection position of the feeding limit sensor for the gripper to grasp and supply to the next station; the upper limit sensor and the lower limit sensor are set to prevent the lifting movement position of the bin from exceeding the specified range.

[0046] As Figure 5 and Figure 7 shown, fixing plates 26 are respectively provided on the bottom plate 10 at both ends of the push rod 24, and locking screws 27 are provided on the fixing plates 26 to press and fix the push rod 24. After the clamping plate centers and positions the steel back to a specific position, the push rod is pressed and fixed by the locking screw, and the position of the clamping plate is fixed, with a simple structure and convenient use.

[0047] AsFigure 1 , Figure 3 and Figure 4 As shown in Figure 1 , Figure 3 and Figure 4 , the feeding mechanism with centering and positioning function further includes a frame 50. Four such feeding mechanisms with centering and positioning function are arranged in parallel on the frame 50, and spacer plates 60 are provided at both ends thereof; dust covers 70 are respectively provided on both sides of the bottom plate 10 of the frame 50.

[0048] As Figure 2 , Figure 4 and Figure 5 As shown in Figure 2 , Figure 4 and Figure 5 , the air cylinder 43 and the guide rail 41 of the guide rail slider mechanism 40 are respectively fixed on the frame 50. A number of support feet 51 are provided at the bottom of the frame 50, and a cylinder head 44 is provided outside the air cylinder 43.

[0049] The feeding mechanism with centering and positioning function solves the problem that the compatibility of the steel back feeding bin is insufficient and it cannot meet the rapid feeding requirements of steel back sheets of different sizes at the same time; it solves the problem that the general steel back bin cannot position workpieces of different specifications and sizes to specific positions, resulting in the gripper being unable to grasp simultaneously and reducing the feeding efficiency; after the steel back of the bin is changed, the feeding gripper only needs to grasp at a specific position, greatly improving the accuracy and efficiency of grasping.

[0050] In summary, as described in the specification and shown in the drawings of the present utility model, an actual sample is made and tested through multiple uses. From the test results, it is proved that the present utility model can achieve the expected purpose and its practicability is beyond doubt. The above embodiments are only used to conveniently illustrate the content of the present utility model and are not intended to limit it formally; any person with common general knowledge in the technical field can, without departing from the technical features and similar features of the present utility model, make local changes or modifications to the equivalent embodiments using the technical content disclosed by the present utility model, and all belong to the protection scope of the present utility model.

Claims

1. A feeding mechanism with a centering and positioning function, characterized in that: It includes a bottom plate (10) and a bin mechanism (20), and the bin mechanism (20) is arranged on the upper part of the bottom plate (10); the bin mechanism (20) is provided with a bin (21), clamping plates (22), a first guide rod (23), a push rod (24) and a connecting rod assembly (25). The bin (21) is arranged on the bottom plate (10). The clamping plates (22) are arranged in pairs and extend upward through the bin (21). The first guide rod (23) is fixed on the bottom plate (10). The push rod (24) is slidably connected to the first guide rod (23). The first guide rod (23), the push rod (24) and the connecting rod assembly (25) are respectively located between the bin (21) and the bottom plate (10). One end of the connecting rod assembly (25) is rotatably connected to one clamping plate (22), and the other end is rotatably connected to the other clamping plate (22). Moving the push rod (24), the paired clamping plates (22) move towards the middle simultaneously or move away from the middle in the opposite direction.

2. The feeding mechanism with a centering and positioning function according to claim 1, characterized in that, The connecting rod assembly (25) includes a first connecting rod (25a), a second connecting rod (25b) and a third connecting rod (25c) which are rotatably connected at the ends in sequence. The central position of the middle second connecting rod (25b) is rotatably fixed on the bottom plate (10).

3. The feeding mechanism with centering and positioning function according to claim 1 or 2, characterized in that, It further includes a lifting mechanism (30). The lifting mechanism (30) is arranged at the lower part of the bottom plate (10) and penetrates through the bottom plate (10) to connect the bin (21) to drive the bin (21) to move up and down.

4. The feeding mechanism with a centering and positioning function according to claim 3, characterized in that, The lifting mechanism (30) includes a stepping motor (31), a ball screw (32), a screw nut (33), a driving synchronous pulley (34), a driven synchronous pulley (35), a synchronous belt (36) and a second guide rod (37). The stepping motor (31) is fixed at the lower part of the bottom plate (10) and connected to the driving synchronous pulley (34). The ball screw (32) penetrates through the bottom plate (10) and is connected to the bin (21). The screw nut (33) is connected to the driven synchronous pulley (35). The synchronous belt (36) connects the driving synchronous pulley (34) and the driven synchronous pulley (35). There are two second guide rods (37), which are located on both sides of the ball screw (32) and connected to the bin (21).

5. The feeding mechanism with centering and positioning function according to claim 1 or 2, characterized in that It further includes a guide rail slider mechanism (40). The upper part of the guide rail slider mechanism (40) sets the bottom plate (10) to push it to switch between the loading position and the replenishing position for material grasping.

6. The feeding mechanism with a centering and positioning function according to claim 5, characterized in that, The guide rail slider mechanism (40) includes a guide rail (41), a slider (42) and a cylinder (43). The slider (42) is fixed at the lower part of the bottom plate (10) and located on the guide rail (41). The cylinder (43) is connected to the bottom plate (10).

7. The feeding mechanism with a centering and positioning function according to claim 1, characterized in that, It further includes a feeding limit sensor (28) for detecting that the material is at the grasping station, and an upper limit sensor (38) and a lower limit sensor (39) for detecting the up and down movement of the bin (21).

8. The feeding mechanism with a centering and positioning function according to claim 1, characterized in that, Fixed plates (26) are respectively provided on the bottom plates (10) at both ends of the push rod (24), and locking screws (27) are provided on the fixed plates (26) to clamp and fix the push rod (24).

9. The feeding mechanism with a centering and positioning function according to claim 1, characterized in that, It includes four pairs of paired clamping plates (22), which are arranged horizontally side by side in two perpendicular pairs; there are two first guide rods (23), which are arranged side by side on both sides of the bottom plate (10); there are four push rods (24), which are slidably connected to the two first guide rods (23) vertically in parallel.

10. A feeding mechanism with a centering and positioning function, characterized in that, It further includes a frame (50), on which four feeding mechanisms with centering and positioning functions as described in claim 9 are arranged side by side, and spacer plates (60) are provided at both ends thereof; dust covers (70) are respectively provided on both sides of the bottom plate (10) on the frame (50).

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