Wheel hub clamping jaw air cylinder with synchronous strokes

Abstract

The utility model discloses a hub clamping jaw air cylinder with synchronous strokes. The hub clamping jaw air cylinder comprises a base, two symmetrically-arranged cylinder barrels, two symmetrically-arranged piston assemblies and a gear and rack assembly arranged between the two cylinder barrels. The cylinder barrel is provided with an inner cavity; one end of each piston assembly is arranged in an inner cavity of the corresponding cylinder barrel, and the other end of each piston assembly extends out of the corresponding cylinder barrel to be fixedly connected with the base; the length direction of the piston assembly is arranged in the movement direction of the cylinder barrel. When the air cylinder is ventilated, the gear and rack assembly is used for correcting the stroke synchronism of the two cylinder barrels. The problem that the clamping force of the clamping jaw air cylinder is insufficient is effectively solved, the stroke synchronism of the two cylinder barrels can be automatically corrected in the clamping movement process, and it is guaranteed that the clamping action is accurate and stable.

Description

TECHNICAL FIELD

[0001] The utility model relates to industrial automation equipment parts technical field especially relates to a stroke synchronous wheel hub clamp jaw air cylinder. BACKGROUND

[0002] In the industrial automation field, the clamp jaw air cylinder is a key component for clamping products. The traditional clamp jaw air cylinder usually adopts a lever slider or a wedge structure, which has many disadvantages. First, the assembly precision of parts is extremely high, and once the assembly deviates, the parts of the clamping part are easily stuck or jammed, affecting the normal operation of the equipment. Secondly, in the processing process, complex processes such as wire cutting or firing method are required, which increases the manufacturing cost and production difficulty. In addition, due to the structural deficiency, the existing clamp jaw air cylinder will cause large radial clamping force loss during clamping, resulting in insufficient clamping force, which cannot meet the needs of some high-precision and large clamping force occasions. SUMMARY

[0003] The utility model aims at providing a stroke synchronous wheel hub clamp jaw air cylinder, effectively solving the problem of insufficient clamping force of the clamp jaw air cylinder, and automatically correcting the stroke synchronization of the two cylinder barrels during the clamping movement, ensuring accurate and stable clamping action.

[0004] To achieve the above-mentioned purpose, the following technical scheme is adopted:

[0005] A stroke synchronous wheel hub clamp jaw air cylinder, comprising a base, two cylinder barrels arranged symmetrically, two piston assemblies arranged symmetrically, and a gear and rack assembly arranged between the two cylinder barrels; the cylinder barrel is provided with an inner cavity; one end of each piston assembly is installed in the inner cavity of a cylinder barrel, and the other end extends to the outside of the cylinder barrel and is fixedly connected with the base; the length direction of the piston assembly is arranged along the movement direction of the cylinder barrel; when the air cylinder is ventilated, the gear and rack assembly is used to correct the stroke synchronization of the two cylinder barrels.

[0006] Preferably, the gear and rack assembly comprises a gear, and two racks engaged with the gear and arranged in parallel; each rack is connected with a cylinder barrel.

[0007] Preferably, the piston assembly comprises a piston and a piston rod connected with the piston; one end of the piston rod is fixed on the base, and the other end of the piston rod is connected with the piston and installed in the inner cavity of the cylinder barrel.

[0008] Preferably, the wheel hub clamp jaw air cylinder further comprises a first ventilation path for controlling the two cylinder barrels to move away from each other, and a second ventilation path for controlling the two cylinder barrels to move close to each other.

[0009] Preferably, the first ventilation path comprises a first air inlet opening on the side wall of the base and communicating with the outside, a first branch air path opening on each piston rod, and a second branch air path opening on the base and communicating between the first air inlet and the first branch air path; the side wall of each piston rod is provided with a first air outlet hole communicating with the first branch air path.

[0010] Preferably, the second ventilation path comprises a second air inlet opening on the side wall of the base and communicating with the outside, a third branch air path opening on each piston rod, and a fourth branch air path opening on the base and communicating between the second air inlet and the third branch air path; the piston is provided with a second air outlet hole communicating with the third branch air path.

[0011] Preferably, the base is provided with a plurality of guide rods arranged in parallel; each guide rod is movably arranged through the two cylinder barrels.

[0012] With the above scheme, the beneficial effects of the utility model are:

[0013] The utility model discloses a wheel hub clamp jaw air cylinder of stroke synchronization, simple structure, easy to assemble. Through the length direction of piston subassembly arrangement along the movement direction of cylinder barrel, radial component force is not produced in clamping process, under the same condition, clamping force is maximized, effectively solve the problem of insufficient clamping force of clamp jaw air cylinder, can satisfy the application occasion of high accuracy, big clamping force demand. And, through setting up rack and pinion assembly between two cylinder barrels, the stroke synchronism of two cylinder barrels can be automatically corrected in clamping movement process, ensures that clamping action is accurate and stable, avoids the product damage or processing error caused by two cylinder barrels out of synchronization, improves production efficiency and product quality. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the perspective view of the utility model;

[0015] Figure 2 It is the sectional structure view of rack and pinion assembly of the utility model;

[0016] Figure 3 It is the sectional structure view of second branch air path of the utility model;

[0017] Figure 4 It is the sectional structure view of fourth branch air path of the utility model;

[0018] Figure 5 It is the sectional structure view of first branch air path, third branch air path of the utility model;

[0019] Figure 6 It is Figure 5 It is the local enlarged view of A in the middle;

[0020] The following are explanations of the labels in the attached diagram:

[0021] 1—Base, 2—Cylinder,

[0022] 3—Piston assembly, 4—Gear and rack assembly,

[0023] 5—First ventilation path, 6—Second ventilation path

[0024] 7—Guide rod, 31—Piston,

[0025] 32—Piston rod, 41—Gear,

[0026] 42—Rack and pinion, 51—First air intake,

[0027] 52—First branch gas path, 53—Second branch gas path,

[0028] 54—First air outlet, 61—Second air inlet

[0029] 62—Third branch gas path, 63—Fourth branch gas path,

[0030] 64—Second vent. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0034] Reference Figures 1 to 6 As shown, this utility model provides a hub gripper cylinder with synchronized stroke, including a base 1, two symmetrically arranged cylinders 2, two symmetrically arranged piston assemblies 3, and a gear and rack assembly 4 disposed between the two cylinders 2; the cylinders 2 have an inner cavity; one end of each piston assembly 3 is placed in the inner cavity of a cylinder 2 and installed, and the other end extends to the outside of the cylinder 2 and is fixedly connected to the base 1; the length direction of the piston assembly 3 is arranged along the movement direction of the cylinder 2; when the cylinder is ventilated, the gear and rack assembly 4 is used to correct the stroke synchronization of the two cylinders 2.

[0035] This utility model provides a wheel hub gripper cylinder with synchronized stroke. Due to the improved synchronization and stability of the gripping action, the repeatability of the wheel hub gripper cylinder is also improved accordingly. It can better meet the requirements of high-precision machining in industrial automation production, and help improve the overall quality and consistency of products. It can be applied to occasions with high requirements for the synchronization of gripping actions in industries such as jigs, CNC machining, and 3C industry.

[0036] The gear and rack assembly 4 includes a gear 41 and two racks 42 that mesh with and are arranged in parallel with the gear 41; each rack 42 is connected to a cylinder 2. Furthermore, to improve structural compactness, the gear 41 is mounted at the bottom between the two cylinders 2. The two cylinders 2 shield the gear and rack assembly 4, preventing external environmental factors from affecting the smooth movement of the gear 41 and racks 42.

[0037] The piston assembly 3 includes a piston 31 and a piston rod 32 connected to the piston 31; one end of the piston rod 32 is fixed to the base 1, and the other end is connected to the piston 31 and installed in the inner cavity of the cylinder 2.

[0038] The hub gripper cylinder also includes a first ventilation passage 5 for controlling the two cylinders 2 to move away from each other, and a second ventilation passage 6 for controlling the two cylinders 2 to move closer to each other.

[0039] The first ventilation path 5 includes a first air inlet 51 connected to the outside and opened on the side wall of the base 1, a first branch air path 52 opened on each piston rod 32, and a second branch air path 53 opened on the base 1 and connected between the first air inlet 51 and the first branch air path 52; the side wall of each piston rod 32 is provided with a first air outlet 54 connected to the first branch air path 52.

[0040] The second ventilation path 6 includes a second air inlet 61 connected to the outside and opened on the side wall of the base 1, a third branch air path 62 opened on each piston rod 32, and a fourth branch air path 63 opened on the base 1 and connected between the second air inlet 61 and the third branch air path 62; the piston 31 is provided with a second air outlet 64 connected to the third branch air path 62.

[0041] In the first air passage 5 and the second air passage 6, the air passage structures of the two piston assemblies 3 are symmetrical, sharing the same first air inlet 51 and second air inlet 61. When air enters through the first air passage 5, the two cylinders 2 move away from each other, causing the grippers to open. When air enters through the second air passage 6, the two cylinders 2 move towards each other, causing the grippers to clamp.

[0042] Since piston assembly 3 is fixedly mounted on base 1, please continue referring to... Figures 3 to 5 Taking the left cylinder 2 as an example, the first exhaust port 54 is located on the left side of the piston 31, and the second exhaust port 64 is connected to the right side of the piston 31. When air enters through the first ventilation passage 5, the air pressure of the first exhaust port 54 is applied to the left side of the piston 31, causing the cylinder 2 to move to the left; when air enters through the second ventilation passage 6, the air pressure of the second exhaust port 64 is applied to the right side of the piston 31, causing the cylinder 2 to move to the right.

[0043] The base 1 is provided with multiple guide rods 7 arranged in parallel; each guide rod 7 is arranged to move through two cylinders 2. Specifically, there are 4 guide rods 7, which enhances the smoothness and rigidity of the clamping action, reduces jamming and vibration during operation, extends the service life of the equipment, and reduces maintenance costs.

[0044] In one specific embodiment, the base 1 has a U-shaped structure. A first air inlet 51 and a second air inlet 61 are located on the sidewall of the horizontal end of the U-shape of the base 1. A second branch air passage 53 and a fourth branch air passage 63 extend from the horizontal end of the U-shape of the base 1 to the vertical end. The end of the guide rod 7 is mounted on the two vertical ends of the U-shape of the base 1, one end of the piston rod 32 is fixed to the vertical end of the U-shape of the base 1, and the gear and rack assembly 4 is located at the top of the horizontal end of the U-shape of the base 1.

[0045] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model. Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the utility model and are not intended to limit the implementation of this utility model. For those skilled in the art, various obvious changes, readjustments, and substitutions can be made without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A stroke-synchronized hub clamp jaw cylinder characterized by, The hub claw cylinder comprises a base, two cylinder barrels arranged symmetrically, two piston assemblies arranged symmetrically, and a gear and rack assembly arranged between the two cylinder barrels; the cylinder barrel is provided with an inner cavity; one end of each piston assembly is arranged in the inner cavity of a cylinder barrel, and the other end extends out of the cylinder barrel and is fixedly connected with the base; the length direction of the piston assembly is arranged along the movement direction of the cylinder barrel; when the cylinder is ventilated, the gear and rack assembly is used for correcting the stroke synchronization of the two cylinder barrels.

2. The stroke-synchronized hub clamp jaw cylinder of claim 1, wherein, The gear and rack assembly comprises a gear and two racks engaged with the gear and arranged in parallel; each rack is connected with a cylinder barrel.

3. The stroke-synchronized hub clamp jaw cylinder of claim 1, wherein, The piston assembly comprises a piston and a piston rod connected with the piston; one end of the piston rod is fixed on the base, and the other end is connected with the piston and arranged in the inner cavity of the cylinder barrel.

4. The stroke-synchronized hub clamp jaw cylinder of claim 3, wherein, The hub claw cylinder further comprises a first ventilation path for controlling the two cylinder barrels to move away from each other, and a second ventilation path for controlling the two cylinder barrels to move close to each other.

5. The stroke-synchronized hub clamp jaw cylinder of claim 4, wherein, The first ventilation path comprises a first air inlet communicated with the outside and arranged on the side wall of the base, a first branch air path arranged on each piston rod, and a second branch air path arranged on the base and communicated between the first air inlet and the first branch air path; a first air outlet is arranged on the side wall of each piston rod and communicated with the first branch air path.

6. The stroke-synchronized hub clamp jaw cylinder of claim 4, wherein, The second ventilation path comprises a second air inlet communicated with the outside and arranged on the side wall of the base, a third branch air path arranged on each piston rod, and a fourth branch air path arranged on the base and communicated between the second air inlet and the third branch air path; a second air outlet is arranged on the piston and communicated with the third branch air path.

7. The stroke-synchronized hub clamp jaw cylinder of claim 1, wherein, The base is provided with a plurality of guide rods arranged in parallel; each guide rod is movably arranged through the two cylinder barrels.

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