Sliding block lifting device of notching press

Abstract

The utility model discloses a notching press slider lifting device, which relates to the technical field of equipment processing and comprises a connecting rod, a crankshaft connected with the connecting rod and used for driving a blanking component, an eccentric gear connected with the crankshaft and used for lifting the blanking component, the eccentric gear is meshed with a rack, and the rack can drive the eccentric gear to rotate. One end of the rack is detachably connected with an air cylinder lifting assembly. The device has the beneficial effects that the first air cylinder is arranged outside, the stroke of the output end of the air cylinder is increased, then the rotating angle of the eccentric gear is increased, meanwhile, the stroke of the connecting rod is increased, the height of the sliding block is further increased, and a mechanical arm can take and place pieces conveniently; and by arranging the second air cylinder and the second connecting pin, the air cylinder lifting assembly can be separated from the rack, so that the load on the sliding block in the blanking process is reduced, the equipment energy consumption is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of equipment processing, in particular to a slider lifting device for a notching machine. Background Art

[0002] Silicon steel sheet notching machines are mainly used to complete the punching of slot holes in the stator and rotor sheets of motors. Since the notching machine has a high punching frequency, the designed stroke is relatively small to reduce vibration. Since the notching machine slider has a small stroke, it is very inconvenient for the robot to pick up and place the sheets. The lifting device can lift the slider to another height after the punching is completed to facilitate the robot to pick up and place the sheets. Chinese utility model patent publication number CN202121936251.2 discloses a notching machine slider lifting device, which drives the eccentric gear sleeved on the crankshaft to rotate through a rack, and then drives the connecting rod to move up and down, so as to achieve the lifting effect. However, this technical solution has some shortcomings. Since the cylinder and the connecting rod are integrated into a structure, the weight that moves with the slider is still relatively large, resulting in a large energy loss; secondly, due to space limitations, the stroke of the cylinder is relatively small, resulting in a low lifting height of the slider, and it is impossible to completely eliminate its influence on the robot taking and placing the sheets. Utility Model Content

[0003] This section is intended to summarize some aspects of the embodiments and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and in the abstract and title of the utility model to avoid obscuring the purpose of this section, the abstract and the title of the utility model, and such simplifications or omissions shall not be used to limit the scope of the utility model.

[0004] In view of the above problems or problems existing in the prior art, the present utility model is proposed, which can solve the technical problems of large energy loss during the lifting process and insufficient lifting height.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a notching machine slider lifting device, which includes a connecting rod, the connecting rod is connected to a crankshaft that drives the punching assembly, the crankshaft is connected to an eccentric gear for lifting the punching assembly, the eccentric gear is engaged with a rack, the rack can drive the eccentric gear to rotate, and one end of the rack is detachably connected to a cylinder lifting assembly.

[0006] As a preferred solution of the notching machine slider lifting device described in the utility model, the cylinder lifting assembly includes a first cylinder, the output end of the first cylinder is connected to a second cylinder seat, the second cylinder seat is hinged to the rack through a second connecting pin, and the second cylinder seat is equipped with a second cylinder for plugging and unplugging the second connecting pin.

[0007] As a preferred solution of the notching machine slider lifting device of the utility model, one end of the first cylinder is hinged to the first cylinder seat through a first connecting pin, and the other end of the first cylinder is provided with a support pad fixedly connected to the first cylinder seat.

[0008] As a preferred solution of the notching machine slider lifting device of the utility model, wherein: the end of the rack away from the second cylinder seat is meshed with the eccentric gear and the transmission or locking of the two is controlled by a self-locking component.

[0009] As a preferred solution of the notching machine slider lifting device of the utility model, the self-locking component includes a positioning pawl, and a pressure head is connected to the top of the positioning pawl.

[0010] As a preferred solution of the notching machine slider lifting device of the utility model, wherein: a needle roller bearing installed on the eccentric section of the crankshaft is provided in the eccentric gear.

[0011] As a preferred solution of the slider lifting device of the notching machine of the present invention, the blanking assembly includes a slider, and the connecting rod is connected to the slider through a ball screw.

[0012] As a preferred solution of the notching machine slider lifting device of the utility model, it also includes a fuselage, and the fuselage is provided with a rolling guide rail that limits the freedom of the slider to vertical movement.

[0013] As a preferred solution of the notching machine slider lifting device of the utility model, a balancing block is connected to the middle section of the crankshaft.

[0014] The beneficial effects of the present invention are as follows: by arranging the first cylinder on the outside, the stroke of the cylinder output end is increased, thereby increasing the rotation angle of the eccentric gear and increasing the stroke of the connecting rod, thereby further increasing the height of the slider, making it easier for the robot to take and place the sheet; by arranging the second cylinder and the second connecting pin, the cylinder lifting assembly can be separated from the rack, thereby reducing the load on the slider during the punching process, reducing equipment energy consumption, and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for describing the embodiments. The drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventiveness or labor. Among them:

[0016] Figure 1 This is a front view of the utility model in an unaugmented state;

[0017] Figure 2It is a side view of the utility model in the non-lifted state;

[0018] Figure 3 This is a front view of the utility model in a lifting state;

[0019] Figure 4 This is a side view of the utility model in a lifting state;

[0020] Figure 5 This is an axial cross-sectional view of the utility model along the second connecting pin.

[0021] The meanings of the reference numerals in the figure are: 1. first cylinder seat; 2. first connecting pin; 3. first cylinder; 4. support pad; 5. second cylinder seat; 6. second cylinder; 7. second connecting pin; 8. rack; 9. positioning pawl; 10. pressure head; 11. eccentric gear; 12. needle bearing; 13. crankshaft; 14. connecting rod; 15. ball screw; 16. slider; 17. balance block; 18. fuselage. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0023] The following description sets forth numerous specific details to facilitate a thorough understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. The term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it constitute a separate or selective embodiment that is mutually exclusive of other embodiments.

[0024] Example

[0025] Reference Figures 1 to 5 , is a specific embodiment of the present utility model, which provides a notching machine slider lifting device, which includes a connecting rod 14, the connecting rod 14 is connected to a crankshaft 13 for driving the punching assembly, the crankshaft 13 is connected to an eccentric gear 11 for lifting the punching assembly, the eccentric gear 11 is engaged with a rack 8, the rack 8 can drive the eccentric gear 11 to rotate, and one end of the rack 8 is detachably connected to a cylinder lifting assembly; the cylinder lifting assembly includes a first cylinder 3, the output end of the first cylinder 3 is connected to a second cylinder seat 5, the second cylinder seat 5 is hinged to the rack 8 through a second connecting pin 7, and a second cylinder 6 for plugging and unplugging the second connecting pin 7 is installed on the second cylinder seat 5; one end of the first cylinder 3 is hinged to the first cylinder seat 1 through a first connecting pin 2, and the other end of the first cylinder 3 is provided with a support pad 4 fixedly connected to the first cylinder seat 1.

[0026] like Figure 1 As shown in Figure 3, O is the center of rotation of the crankshaft 13, O' is the center of the eccentric section of the crankshaft 13, and O" is the center of the eccentric gear 11 and the connecting rod 14. When the crankshaft 13 rotates, the slider 16 forms the working stroke required for blanking. When the eccentric section of the crankshaft 13 rotates from the top to the bottom, it drives the slider 16 to perform blanking. After blanking, the eccentric section of the crankshaft 13 rotates from the bottom to the top, so that the slider 16 is located at the top dead center. Since the first cylinder 3 is arranged outside, the movement stroke is increased, so that the eccentric gear 11 can rotate a larger angle and achieve a larger stroke.

[0027] The front end of the first cylinder 3 is placed on the support pad 4, and the support pad 4 is provided with a spring with elasticity to cushion impact force and extend the protection life. The second cylinder 6 is fixedly connected to the second cylinder seat 5, and the second cylinder seat 5 is fixedly connected to the protruding end of the piston rod of the first cylinder 3. When the first cylinder 3 is in the initial position and the second connecting pin 7 is in the pulled-out state, the second cylinder seat 5 can fall freely on the arc pad installed on the top of the first cylinder seat 1. The height of the arc pad matches the height of the support pad 4 to ensure that the first cylinder 3 is in a horizontal state when it is in the initial position. The second connecting pin 7 is fixedly connected to the output end of the second cylinder 6 through the connecting plate. When the output end of the second cylinder 6 is pushed out, the second connecting pin 7 is in the pulled-out state, and when the output end of the second cylinder 6 is retracted, the second connecting pin 7 is in the inserted state.

[0028] The end of the rack 8 away from the second cylinder base 5 is meshed with the eccentric gear 11 and the transmission or locking of the two is controlled by a self-locking component; the self-locking component includes a positioning pawl 9, and a pressure head 10 is connected to the top of the positioning pawl 9.

[0029] The positioning pawl 9 is connected to the pressure head 10 by a spring. The bottom of the positioning pawl 9 is a trapezoidal inclined surface, which cooperates with the groove at the top of the rack 8. When the first cylinder 3 is in the initial position, the groove is located directly below the positioning pawl 9. The positioning pawl 9 enters the groove under the pressure of the spring for positioning, thereby locking the rack 8. When the output end of the first cylinder 3 extends, it drives the rack 8 to move. Since the bottom of the positioning pawl 9 is a trapezoidal inclined surface, during the movement of the rack 8, the positioning pawl 9 can compress the spring and disengage from the groove, thereby releasing the lock.

[0030] The eccentric gear 11 is provided with a needle roller bearing 12 mounted on the eccentric section of the crankshaft 13; the blanking assembly includes a slider 16, and the connecting rod 14 is connected to the slider 16 through a ball screw 15; it also includes a body 18, on which is provided a rolling guide rail that limits the freedom of the slider 16 to vertical movement; a balancing block 17 is connected to the middle section of the crankshaft 13.

[0031] The ball screw 15 is fixedly connected to the connecting rod 14, and the ball head portion thereof is hinged to the slider 16. The slider 16 cooperates with the rolling guide rail on the fuselage 18 and can only move in the up and down directions.

[0032] Working principle: O is the rotation center of the crankshaft 13, O' is the center of the eccentric section of the crankshaft 13, and O" is the center of the eccentric gear 11 and the connecting rod 14. During normal blanking, the crankshaft 13 rotates to form the required working stroke. After the blanking is completed, the slider 16 is at the top dead center; then the slider 16 starts to lift: the second cylinder 6 is started, driving the second connecting pin 7 to hinge the rack 8 and the second cylinder base 5 into one, and then the first cylinder 3 is started. The output end of the first cylinder 3 pushes the rack 8 to move, and the rack 8 drives the eccentric gear 11 to rotate clockwise, and the center O" of the eccentric gear 11 is moved from Figure 1 The position shown is transmitted to Figure 3 The position shown in the figure drives the connecting rod 14 to move upward, thereby raising the height of the slider 16, and then the punching sheet is replaced by the robot, and then the first cylinder 3 is reset, driving the rack 8, eccentric gear 11, connecting rod 14, and slider 16 back to the initial position, and then positioning the rack 8 by the positioning pawl 9, and then starting the second cylinder 6 to pull out the second connecting pin 7, thereby disconnecting the rack 8 and the second cylinder base 5, and then performing the next punching by rotating the crankshaft 13, and so on.

[0033] The beneficial effects of the present application compared to the prior art are as follows: by arranging the first cylinder 3 on the outside, the stroke of the cylinder output end is increased, thereby increasing the rotation angle of the eccentric gear 11, and at the same time increasing the stroke of the connecting rod 14, thereby further increasing the height of the slider 16, making it easier for the robot to pick up and place the sheet; by arranging the second cylinder 6 and the second connecting pin 7, the cylinder lifting assembly can be separated from the rack 8, thereby reducing the load on the slider 16 during the punching process, reducing equipment energy consumption, and improving work efficiency.

[0034] Importantly, although only a few embodiments are described in detail in this disclosure, it should be readily understood by those reading this disclosure that many modifications are possible without departing substantially from the subject matter described in this application, such as the size, scale, structure, shape, and proportion of the various components, as well as changes in parameter values ​​(temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, and the like. For example, an element shown as integrally formed may be composed of multiple parts or elements, and the position of the elements may be inverted or otherwise changed. Therefore, all such modifications should be included within the scope of the present invention, and in the claims, any "means plus function" clause should cover the structure described herein that performs the function, and other substitutions, modifications, changes, and omissions may be made in the design, operating conditions, and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the present invention is not limited to a particular embodiment, but extends to a variety of modifications that still fall within the scope of the appended claims.

Claims

1. The notching machine slider lifting device is characterized by: The invention comprises a connecting rod (14), wherein the connecting rod (14) is connected to a crankshaft (13) for driving a punching assembly, wherein the crankshaft (13) is connected to an eccentric gear (11) for lifting the punching assembly, wherein the eccentric gear (11) is engaged with a rack (8), wherein the rack (8) can drive the eccentric gear (11) to rotate, and wherein one end of the rack (8) is detachably connected to a cylinder lifting assembly.

2. The notching machine slider lifting device according to claim 1, characterized in that: The cylinder lifting assembly comprises a first cylinder (3), the output end of the first cylinder (3) is connected to a second cylinder seat (5), the second cylinder seat (5) is hinged to a rack (8) via a second connecting pin (7), and a second cylinder (6) for inserting and removing the second connecting pin (7) is installed on the second cylinder seat (5).

3. The notching machine slider lifting device according to claim 2, characterized in that: One end of the first cylinder (3) is hinged to the first cylinder seat (1) via a first connecting pin (2), and the other end of the first cylinder (3) is provided with a support pad (4) fixedly connected to the first cylinder seat (1).

4. The notching machine slider lifting device according to claim 3, characterized in that: One end of the rack (8) away from the second cylinder seat (5) is meshed with the eccentric gear (11) and the transmission or locking of the two is controlled by a self-locking component.

5. The notching machine slider lifting device according to claim 4, characterized in that: The self-locking assembly comprises a positioning pawl (9), and a pressure head (10) is connected to the top of the positioning pawl (9).

6. The notching machine slider lifting device according to claim 5, characterized in that: The eccentric gear (11) is provided with a needle bearing (12) mounted on the eccentric section of the crankshaft (13).

7. The notching machine slider lifting device according to claim 1 or 6, characterized in that: The blanking assembly comprises a slider (16), and the connecting rod (14) is connected to the slider (16) via a ball screw (15).

8. The notching machine slider lifting device according to claim 7, characterized in that: The invention also comprises a body (18) on which a rolling guide rail is provided for limiting the freedom of the slider (16) to movement in the vertical direction.

9. The notching machine slider lifting device according to claim 8, characterized in that: The middle section of the crankshaft (13) is connected with a balancing block (17).

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