Air cylinder with brake guide device

Abstract

According to the technical scheme, the air cylinder with the brake guiding device is characterized by comprising an air cylinder body, the air cylinder body comprises a cylinder body and a piston rod, a brake device is arranged at the end, corresponding to the piston rod, of the cylinder body, and the brake device comprises a rotating disc and a driving mechanism for driving the rotating disc to rotate; a through hole is eccentrically formed in the rotating disc, the piston rod penetrates through the through hole, the driving mechanism drives the rotating disc to rotate, the inner wall of the through hole abuts against the piston rod to achieve braking of the piston rod, rapid braking can be achieved at any position of the piston rod, meanwhile, the piston rod has a guiding function, and parallel propelling is stable and reliable.

Description

Technical Field

[0001] The present invention relates to the technical field of cylinders, and more particularly to a cylinder with a brake guide device. Background Art

[0002] As an important pneumatic actuator, the cylinder is widely used in many industrial fields and some specific mechanical devices, such as automated production lines, automobile manufacturing, mechanical processing, etc. It can convert the pressure energy of compressed gas into mechanical energy, realize linear reciprocating motion, and thus drive various mechanical parts to complete corresponding actions.

[0003] At present, in some scenarios where the cylinder movement needs to be stopped quickly, the existing ordinary cylinders are often difficult to brake instantly, resulting in a certain deviation in the stopping position of the mechanical parts, affecting the accuracy and work efficiency of the entire equipment. For example, in the process of grabbing and placing materials on an automated production line, if the cylinder cannot be braked in a timely and accurate manner, it may cause inaccurate material placement, thus affecting subsequent production processes. At the same time, the piston rod of the cylinder is prone to bending under load, and it is necessary to rely on a guide device to effectively bear and disperse these forces to ensure stability under high-precision requirements. Therefore, it is crucial to brake the cylinder at any position and to stably propel the piston rod in parallel. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a cylinder with a brake guide device, which can achieve rapid braking at any position of the piston rod and has a guiding function for the piston rod, and the parallel propulsion is stable and reliable.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a cylinder with a brake guide device, comprising a cylinder body, the cylinder body comprising a cylinder body and a piston rod, a brake device is arranged on one end of the cylinder body corresponding to the piston rod, the brake device comprises a rotating disk and a driving mechanism for driving the rotating disk to rotate, a through hole is eccentrically arranged on the rotating disk, the piston rod is arranged through the through hole, the driving mechanism drives the rotating disk to rotate, and makes the inner wall of the through hole abut against the piston rod to realize the braking of the piston rod.

[0006] The present invention is further configured as follows: a guide device is also provided on the cylinder body, the guide device comprises a guide rod which moves parallel to the piston rod and a guide sleeve which constrains the guide rod, and the end of the guide rod is fixedly connected to the end of the piston rod.

[0007] The present invention is further configured as follows: a linear bearing is arranged in the guide sleeve.

[0008] The present invention is further configured as follows: the driving mechanism includes a control cylinder, a piston block is arranged in the cavity of the control cylinder, a rotating roller is arranged on the piston block, a connecting screw is arranged on the rotating roller, and the connecting screw is connected to the rotating disk.

[0009] The present invention is further configured as follows: a cavity is provided in the piston block, a rotating roller is provided on one side of the cavity, a spherical protrusion is provided on the other side, and the connecting screw is provided between the rotating roller and the protrusion.

[0010] The present invention is further configured as follows: a copper sleeve is arranged in the through hole.

[0011] The present invention is further configured as follows: the brake device is also provided with an unlocking hole and an unlocking rod, one end of the unlocking hole corresponds to the peripheral side of the rotating disk, and the other end is connected to the outside, a notch is provided at a position corresponding to the unlocking hole on the rotating disk, and the unlocking rod extends into the unlocking hole and cooperates with the notch.

[0012] The present invention is further configured such that: the guide devices are symmetrically arranged in two groups.

[0013] The present invention is further configured as follows: the brake device further includes an extension portion, the extension portion includes a through hole B, and the guide rod passes through the through hole B.

[0014] The present invention is further configured as follows: a locking pin is further provided in the extension portion, a coaxially arranged cam plate is further provided on the rotating plate, one end of the locking pin cooperates with the flange of the cam plate, and the other end extends into the through hole B to cooperate with the guide rod.

[0015] In summary, the present invention has the following beneficial effects:

[0016] Compared with the prior art, the present invention is provided with a brake device, which relies on a rotating disk and a through hole set in an offset manner. The rotation of the brake device by a driving device can make the inner wall of the through hole and the piston rod form a misaligned counteraction to achieve braking. This braking method can achieve rapid braking at any position of the piston rod with high braking accuracy. The present invention is also provided with a guide device, which can provide a guarantee for the parallel advancement of the piston rod, and the brake device of the present invention also includes an extension part. The guide rod and the extension part cooperate to achieve synchronous braking of the guide rod, so that the overall braking effect is better, the braking force is better, and it can remain stable after braking in the face of a large load. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structural cross-section of the cylinder when viewed from the front.

[0018] Figure 2 It is a schematic diagram of the cross-sectional structure of the cylinder brake device from the side.

[0019] Figure 3 It is a schematic diagram of the cross-sectional structure during braking.

[0020] Figure 4 It is a schematic diagram of the internal structure of the cylinder when viewed from above.

[0021] Figure 5 It is a schematic diagram of the internal structure of the extension part and the locking pin.

[0022] Figure numerals: 1. Cylinder body; 101. Cylinder body; 102. Piston rod; 2. Braking device; 201. Rotating disk; 2011. Cam disk; 202. Through hole; 206. Recess; 3. Driving mechanism; 301. Control cylinder; 302. Piston block; 303. Rotating roller; 304. Connecting screw; 4. Guide device; 401. Guide rod; 402. Guide sleeve; 403. Linear bearing; 5. Copper sleeve; 6. Unlocking hole; 7. Unlocking rod; 8. Extension; 801. Through hole B; 802. Locking pin; 9. Cavity; 901. Protrusion. DETAILED DESCRIPTION

[0023] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0024] This embodiment discloses a cylinder with a brake guide device, such as Figure 1-5 As shown, it includes a cylinder body 1, which includes a cylinder body 101 and a piston rod 102. A brake device 2 is provided on one end of the cylinder body 101 corresponding to the piston rod 102. The brake device 2 includes a rotating disk 201 and a driving mechanism 3 for driving the rotating disk 201 to rotate. A through hole 202 is eccentrically provided on the rotating disk 201, and the piston rod 102 is provided through the through hole 202. The driving mechanism 3 drives the rotating disk 201 to rotate, and makes the inner wall of the through hole 202 abut against the piston rod 102 to achieve the braking of the piston rod 102. Through the above structure, the eccentric through hole 202 is misaligned by the rotation of the rotating disk 201, so that the piston rod 102 originally passing through the through hole 202 abuts against the inner wall of the through hole 202 to achieve braking. This braking method can brake at any position, and the braking speed is fast, which is particularly suitable for braking in high-precision processing scenarios.

[0025] Furthermore, a guide device 4 is also provided on the cylinder body 101, and the guide device 4 includes a guide rod 401 that moves parallel to the piston rod 102 and a guide sleeve 402 that constrains the guide rod 401. The end of the guide rod 401 is fixedly connected to the end of the piston rod 102. Specifically, the ends of the piston rod 102 and the guide rod 401 are fixedly connected to a push plate. The power is provided by the piston rod 102, and the guide rod 401 performs limiting guiding to ensure stable parallel pushing.

[0026] Furthermore, a linear bearing 403 is provided in the guide sleeve 402. As a preferred embodiment of this embodiment, refer to Figure 4 The guide device 4 is symmetrically arranged in two groups, and four linear bearings 403 are arranged, so as to ensure that the movement of the guide rod 401 is accurate and stable, and play a better guiding role.

[0027] Furthermore, the specific structure of the driving mechanism 3 includes a control cylinder 301, a piston block 302 is arranged in the cavity of the control cylinder 301, and the piston block 302 can move in the cavity. Figure 2-3 , air holes are set at the upper and lower ends of the control cylinder 301, when air is supplied from the bottom, such as Figure 2 , the piston block 302 is located at the top, when the air is supplied from the top, such as Figure 3 , the piston block 302 is located at the bottom, a rotating roller 303 is arranged on the piston block 302, a connecting screw 304 is arranged on the rotating roller 303, and the connecting screw 304 is connected to the rotating disk 201. Through the above structure, the up and down movement of the piston block 302 will drive the rotating roller 303 to move up and down, thereby causing the connecting screw 304 on the roller to deflect, thereby driving the rotating disk to rotate and realize braking.

[0028] Furthermore, a cavity 9 is provided in the piston block 302, a rotating roller 303 is provided on one side of the cavity 9, a spherical protrusion 901 is provided on the other side, and a connecting screw 304 is provided between the rotating roller 303 and the protrusion 901. Through the above structure, the connecting screw 304 is better constrained so that its swing angle is accurate.

[0029] Furthermore, a copper sleeve 5 is arranged in the through hole 202. Through the cooperation between the copper sleeve 5 and the piston rod 102, the copper sleeve 5 has good self-lubricating performance, which ensures the smooth extension and retraction of the piston rod 102. Secondly, the hardness of the copper sleeve 5 is relatively soft. When performing eccentric brake braking, the copper sleeve, as a sacrificial wear-resistant material, bears most of the wear, thereby protecting the surface of the piston rod and the cylinder body and extending their service life.

[0030] Furthermore, a manual brake release mechanism is required during initial installation and when a fault occurs. Therefore, the brake device 2 is also provided with an unlocking hole 6 and an unlocking rod 7. One end of the unlocking hole 6 corresponds to the peripheral side of the rotating disk 201, and the other end is connected to the outside. A notch 206 is provided on the rotating disk 201 at a position corresponding to the unlocking hole 6. The unlocking rod 7 extends into the unlocking hole 6 and matches with the notch 206. Figure 2 and Figure 4When the unlocking rod 7 is inserted into the unlocking hole 6, the unlocking rod 7 will be further inserted into the notch 206. If the rotating disk 201 is in the rotated position at this time, the unlocking rod 7 will hit the inner wall of the notch 206 after being inserted into the notch 206, thereby pushing the rotating disk 201 back to the initial position and releasing the brake state. When the unlocking rod 7 is not pulled out, the unlocking rod 7 will always be stuck in the notch 206, and the rotating disk cannot rotate. Therefore, when the control cylinder 301 or other components are initially installed, the unlocking rod 7 can also be inserted into the unlocking hole 6 all the time.

[0031] Furthermore, in order to improve the braking force and stability of the brake device 2 after braking, the brake device 2 also includes an extension part 8, and the extension part 8 includes a through hole B801, and the guide rod 401 passes through the through hole B801. A locking pin 802 is also arranged in the extension part 8, and a cam plate 2011 is also arranged coaxially on the rotating disk 201. One end of the locking pin 802 cooperates with the flange of the cam plate 2011, and the other end extends into the through hole B801 and cooperates with the guide rod 401. Figure 4-5 Through the above structure, when the rotating disk 201 rotates, the cam disk 2011 will also rotate, and the flange on the cam disk will push the locking pin 802, so that the locking pin 802 can lock the guide rod 401 at the same time. In this way, not only the piston rod brake is locked, but the guide rod 401 is also locked. The braking force is large, and the brake position can also remain stable when bearing load, which is more suitable for high-precision processing requirements.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the design concept of the present invention should be included in the protection scope of the present invention.

Claims

1. A cylinder with a brake guide device, comprising a cylinder body (1), wherein the cylinder body (1) comprises a cylinder body (101) and a piston rod (102), characterized in that: A brake device (2) is provided on one end of the cylinder body (101) corresponding to the piston rod (102), and the brake device (2) comprises a rotating disk (201) and a driving mechanism (3) for driving the rotating disk (201) to rotate. A through hole (202) is eccentrically provided on the rotating disk (201), and the piston rod (102) is arranged through the through hole (202). The driving mechanism (3) drives the rotating disk (201) to rotate, and makes the inner wall of the through hole (202) abut against the piston rod (102) to achieve braking of the piston rod (102).

2. The cylinder with a brake guide device according to claim 1, characterized in that: The cylinder body (101) is also provided with a guide device (4), the guide device (4) comprising a guide rod (401) that moves parallel to the piston rod (102) and a guide sleeve (402) that constrains the guide rod (401), and the end of the guide rod (401) is fixedly connected to the end of the piston rod (102).

3. The cylinder with a brake guide device according to claim 2, characterized in that: A linear bearing (403) is arranged inside the guide sleeve (402).

4. The cylinder with a brake guide device according to claim 1, characterized in that: The driving mechanism (3) comprises a control cylinder (301), a piston block (302) is arranged in the cavity of the control cylinder (301), a rotating roller (303) is arranged on the piston block (302), a connecting screw (304) is arranged on the rotating roller (303), and the connecting screw (304) is connected to the rotating disk (201).

5. The cylinder with a brake guide device according to claim 4, characterized in that: A cavity (9) is provided in the piston block (302), a rotating roller (303) is provided on one side of the cavity (9), and a spherical protrusion (901) is provided on the other side of the cavity (9), and the connecting screw (304) is provided between the rotating roller (303) and the protrusion (901).

6. The cylinder with a brake guide device according to claim 1, characterized in that: A copper sleeve (5) is arranged in the through hole (202).

7. The cylinder with a brake guide device according to claim 1, characterized in that: The brake device (2) is also provided with an unlocking hole (6) and an unlocking rod (7), one end of the unlocking hole (6) corresponds to the peripheral side of the rotating disk (201), and the other end is connected to the outside, a notch (206) is provided on the rotating disk (201) at a position corresponding to the unlocking hole (6), and the unlocking rod (7) extends into the unlocking hole (6) and cooperates with the notch (206).

8. The cylinder with a brake guide device according to claim 2, characterized in that: The guide devices (4) are symmetrically arranged in two groups.

9. The cylinder with a brake guide device according to claim 2, characterized in that: The brake device (2) further comprises an extension portion (8), the extension portion (8) comprises a through hole B (801), and the guide rod (401) passes through the through hole B (801).

10. The cylinder with a brake guide device according to claim 9, characterized in that: A locking pin (802) is also provided in the extension portion (8), and a coaxially arranged cam plate (2011) is also provided on the rotating plate (201). One end of the locking pin (802) cooperates with the flange of the cam plate (2011), and the other end extends into the through hole B (801) to cooperate with the guide rod (401).

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