Hydraulic shear

Abstract

The utility model provides a hydraulic shear which comprises an arch-shaped piece, an induction oil cylinder, a fixed tool base and a movable tool base, the fixed tool base is arranged on the inner side of one end of the arch-shaped piece, and a first blade is fixed to the fixed tool base; the induction oil cylinder is installed on the outer side of the other end of the arch-shaped piece, the movable tool base is fixed to the end of the outer side of the piston rod, and a second blade is fixed to the movable tool base. Two sliding blocks are installed at the arch back of the inner side of the arch-shaped piece, and a dovetail groove allowing the second blade to linearly slide is formed between the two sliding blocks. The dovetail groove plays a good role in guiding and protecting, the second blade can stably move under the guiding and limiting effects of the dovetail groove, deviation is avoided, and the shearing qualification rate is guaranteed; meanwhile, lateral force generated by shearing is absorbed by the dovetail groove and cannot be transmitted to the induction oil cylinder, so that the oil cylinder can be well protected; accurate control over the stroke of the oil cylinder is achieved through the induction oil cylinder, the situation that the oil cylinder is stuck and cannot move due to cutting off is avoided, and the next work cannot be affected.

Description

Technical Field

[0001] This utility model relates to the field of shearing equipment technology, and in particular to a hydraulic shear. Background Technology

[0002] In current die casting processes, the die-cast product blanks contain runners and slag pockets, which need to be removed during rough machining. With the increasing prevalence of robotic automation, most die casting companies have begun to use robotic hydraulic shears to remove runners and slag pockets.

[0003] However, the existing hydraulic shears have the following defects in removing flow channels and weighing slag bags: (1) During the operation of the hydraulic cylinder, the rotation of the piston rod will cause the moving blade position to shift, resulting in unqualified shearing and affecting the product yield; (2) The hydraulic cylinder will get stuck because it cannot cut the flow channel, affecting the next operation, causing the entire automation to stop and affecting production efficiency. Utility Model Content

[0004] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a hydraulic shear to solve the problem that the moving blade position of the hydraulic shear is prone to displacement, resulting in unqualified shearing.

[0005] To achieve the above and other related objectives, this utility model provides a hydraulic shear, including an arc-shaped component, a sensing cylinder, a fixed cutter holder, and a movable cutter holder. The fixed cutter holder is disposed on the inner side of one end of the arc-shaped component, and a first blade is fixed on the fixed cutter holder. The sensing cylinder is installed on the outer side of the other end of the arc-shaped component, and the sensing cylinder includes a piston rod. A through hole is provided on the arc-shaped component for the piston rod to extend into. The movable cutter holder is fixed to the outer end of the piston rod, and a second blade is fixed on the movable cutter holder. Two sliders are installed on the inner arc back of the arc-shaped component, and a dovetail groove is formed between the two sliders for the second blade to slide linearly.

[0006] In one embodiment of the present invention, the second blade is slidably disposed in the dovetail groove on the side near the bow-shaped member.

[0007] In one embodiment of this utility model, both sliders are detachably mounted on the inner bow back of the bow-shaped member for adjusting the width and position of the dovetail groove.

[0008] In one embodiment of the present invention, the first blade and the second blade are arranged facing each other, and the first blade and the second blade have the same specifications and dimensions.

[0009] In one embodiment of this utility model, a flange is further provided between the movable tool holder and the piston rod.

[0010] In one embodiment of the present invention, the sensing cylinder further includes a cylinder body, a cylinder top, and a cylinder bottom. Four tie rods are evenly arranged in a ring between the cylinder top and the cylinder bottom. A magnetic ring is provided on one end of the piston rod located inside the cylinder body. A sensor for detecting the position of the magnetic ring is provided on the tie rod.

[0011] In one embodiment of the present invention, the sensor includes a first sensor and a second sensor, and the distance between the first sensor and the second sensor is the stroke required for the sensing cylinder to complete the action.

[0012] In one embodiment of this utility model, lifting rings are provided on both sides of the bow-shaped member.

[0013] As described above, the hydraulic shear of this utility model has the following beneficial effects:

[0014] 1. The dovetail groove of this utility model can play a good guiding and protective role. The second blade can move smoothly under the guidance and limiting role of the dovetail groove without deviation, ensuring the qualification rate of shearing. At the same time, the lateral force generated by shearing is absorbed by the dovetail groove and will not be transmitted to the sensing cylinder, which can protect the cylinder well and has strong stability.

[0015] 2. This utility model's inductive hydraulic cylinder achieves precise control of the cylinder's stroke through two sensors, preventing the cylinder from getting stuck due to incomplete flow path cutting and ensuring uninterrupted operation. This enhances flexibility and meets the automation needs of the die-casting industry. Furthermore, the four-link design of the inductive hydraulic cylinder ensures smooth operation, and the link design facilitates sensor installation, simplifying the sensor mounting mechanism of traditional hydraulic cylinders and making the entire hydraulic shear structure more compact and streamlined.

[0016] 3. The hydraulic shear of this utility model has a simple overall structure. When adjusting the setting, the first blade that is not moving is used as the reference, which makes it simple and easy to adjust. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a hydraulic shear disclosed in an embodiment of this utility model.

[0018] Figure 2 This is a side view of a hydraulic shear disclosed in an embodiment of the present utility model.

[0019] Figure 3 This is a top view of a hydraulic shear disclosed in an embodiment of the present invention.

[0020] Component designation explanation

[0021] 1. Bow-shaped component; 2. Induction cylinder; 21. Piston rod; 22. Cylinder body; 23. Cylinder top; 24. Cylinder bottom; 25. Tie rod; 26. First sensor; 27. Second sensor; 3. Flange; 4. Moving tool holder; 41. Second blade; 5. Fixed tool holder; 51. First blade; 6. Slider; 61. Dovetail groove; 7. Lifting ring. Detailed Implementation

[0022] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. It should be noted that, unless otherwise specified, the following embodiments and features can be combined with each other.

[0023] Please see Figures 1-3 This utility model provides a hydraulic shear, including an arc-shaped component 1, a sensing cylinder 2, a fixed cutter holder 5, and a movable cutter holder 4. The fixed cutter holder 5 is disposed on the inner side of one end of the arc-shaped component 1, and a first blade 51 is fixed on the fixed cutter holder 5. The sensing cylinder 2 is installed on the outer side of the other end of the arc-shaped component 1, and the sensing cylinder 2 includes a piston rod 21. The arc-shaped component 1 has a through hole for the piston rod 21 to extend into. The movable cutter holder 4 is fixed to the outer end of the piston rod 21, and a second blade 41 is fixed on the movable cutter holder 4. Two sliders 6 are installed on the inner arc back of the arc-shaped component 1, and a dovetail groove 61 is formed between the two sliders 6 for the second blade 41 to slide linearly. The side of the second blade 41 closest to the arc-shaped component 1 is slidably disposed in the dovetail groove 61, and the movement direction of the piston rod 21 is in the same direction as the setting direction of the dovetail groove 61.

[0024] The dovetail groove 61 of this invention provides excellent guidance and protection. Under the guidance and limiting effect of the dovetail groove 61, the second blade 41 can move smoothly without deviation, ensuring a high shearing yield. Simultaneously, the lateral force generated during shearing is absorbed by the dovetail groove 61 and not transmitted to the sensing cylinder 2, effectively protecting the cylinder and ensuring high stability. Furthermore, the overall structure of this hydraulic shear is simple, and the stationary first blade 51 serves as a reference point for adjustment, making it easy and convenient to adjust.

[0025] The sensing cylinder 2 further includes a cylinder body 22, a cylinder top 23, and a cylinder bottom 24. Four tie rods 25 are evenly arranged in a ring between the cylinder top 23 and the cylinder bottom 24. A magnetic ring is provided on one end of the piston rod 21 located inside the cylinder body 22. Sensors for detecting the position of the magnetic ring are provided on the tie rods 25. The sensors include a first sensor 26 and a second sensor 27. The distance between the first sensor 26 and the second sensor 27 is the stroke required for the sensing cylinder 2 to complete its action.

[0026] The design of four tie rods 25 ensures smooth operation of the hydraulic cylinder, and the tie rods 25 also facilitate sensor installation, simplifying the sensor mounting mechanism of traditional hydraulic cylinders and making the entire hydraulic shear structure more compact and streamlined. Furthermore, the sensing cylinder 2, through two sensors, enables precise control of the cylinder stroke, preventing the cylinder from jamming due to incomplete cutting of the flow channel and ensuring uninterrupted operation in subsequent cycles. This greater flexibility meets the automated production needs of the die-casting industry.

[0027] Furthermore, both sliders 6 are detachably mounted on the inner bow back of the bow-shaped member 1 to adjust the width and position of the dovetail groove 61, ensuring precise guidance of the second blade 41 and precise alignment of the first blade 51 and the second blade 41.

[0028] Furthermore, the first blade 51 and the second blade 41 are arranged facing each other, and the first blade 51 and the second blade 41 adopt the same specifications and dimensions, which can reduce the types of accessories and the cost of use.

[0029] Furthermore, a flange 3 is provided between the movable tool holder 4 and the piston rod 21 to facilitate the disassembly or adjustment of the movable tool holder 4 and ensure machining accuracy.

[0030] Furthermore, each of the two sides of the bow-shaped component 1 is provided with a lifting ring 7.

[0031] In summary, the dovetail groove of this invention provides excellent guidance and protection. The second blade moves smoothly under the guidance and limiting effect of the dovetail groove, preventing deviation and ensuring a high shearing yield. Simultaneously, the lateral force generated during shearing is absorbed by the dovetail groove and not transmitted to the induction cylinder, effectively protecting it. The induction cylinder allows for precise control of its stroke, preventing it from jamming due to incomplete shearing and ensuring smooth operation in subsequent cycles. Therefore, this invention effectively overcomes the shortcomings of existing technologies and possesses high industrial applicability.

[0032] The terms used in this specification, such as "upper", "lower", "left", "right", "front", "back", "middle" and "one", are merely for clarity of description and are not intended to limit the scope of implementation of this utility model. Any changes or adjustments to their relative relationships, without substantially altering the technical content, shall also be considered within the scope of implementation of this utility model.

[0033] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit this utility model. All equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A hydraulic shear, characterized in that, The device includes an arc-shaped component, a sensing cylinder, a fixed tool holder, and a movable tool holder. The fixed tool holder is located on the inner side of one end of the arc-shaped component, and a first blade is fixed on the fixed tool holder. The sensing cylinder is installed on the outer side of the other end of the arc-shaped component. The sensing cylinder includes a piston rod. The arc-shaped component has a through hole for the piston rod to extend into. The movable tool holder is fixed to the outer end of the piston rod, and a second blade is fixed on the movable tool holder. Two sliders are installed on the inner arc back of the arc-shaped component, and a dovetail groove is formed between the two sliders for the second blade to slide linearly.

2. A hydraulic shear according to claim 1, characterized in that, The second blade is slidably disposed in the dovetail groove on the side near the bow-shaped part.

3. A hydraulic shear according to claim 1, characterized in that, Both sliders are detachably mounted on the inner bow back of the bow-shaped component, and are used to adjust the width and position of the dovetail groove.

4. A hydraulic shear according to claim 1, characterized in that, The first blade and the second blade are arranged facing each other, and the first blade and the second blade have the same specifications and dimensions.

5. A hydraulic shear according to claim 1, characterized in that, A flange is also provided between the movable tool holder and the piston rod.

6. A hydraulic shear according to any one of claims 1 to 5, characterized in that, The sensing cylinder also includes a cylinder body, a cylinder top, and a cylinder bottom. Four tie rods are evenly arranged in a ring between the cylinder top and the cylinder bottom. A magnetic ring is provided on one end of the piston rod located inside the cylinder body. A sensor for detecting the position of the magnetic ring is provided on the tie rod.

7. A hydraulic shear according to claim 6, characterized in that, The sensor includes a first sensor and a second sensor, and the distance between the first sensor and the second sensor is the stroke required for the sensing cylinder to complete the action.

8. A hydraulic shear according to claim 1, characterized in that, The bow-shaped component is provided with lifting rings on both sides.

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