A quick disengaging clutch device for a cold shearing machine

Abstract

The present application discloses a quick-disconnect coupling device for a cold shearing machine to solve the technical problem of quickly replacing the shear blades of the cold shearing machine. The device includes a hook coupling, a hinge shaft seat, a connecting rod, and two hinge chain plates; the hook coupling is connected to the oil cylinder and can extend and retract under the drive of the oil cylinder; the hinge shaft seat is connected to the upper shear blade seat body, and the two hinge chain plates are respectively connected to both sides of the hinge shaft seat; both ends of the connecting rod are respectively connected to one end of the two hinge chain plates far away from the hinge shaft seat. By using the hook coupling to connect the oil cylinder and the connecting rod to connect the shear blades, when replacing the shear blades, the hook coupling hooks the connecting rod and drags the shear blades to the working position. After the shear blades are in place, the hook coupling retracts slightly, creating a gap between the hook coupling and the connecting rod. Then, under the action of gravity, the connecting rod rotates downward and disengages from the hook coupling, realizing the quick replacement of the shear blades and ensuring the safe and reliable operation of the cold shearing machine in the future.

Description

Technical Field

[0001] This application relates to the technical field of cold shearing machines, and particularly to a quick-disconnect coupling device for a cold shearing machine. Background Art

[0002] Cold shearing machines are mechanical devices often used in the metallurgical industry to cut the heads, tails, or fixed lengths of rolled pieces. As one of the shearing machines, cold shearing machines are widely used in metallurgy, aviation, national defense industries, and light industries such as printing.

[0003] Due to manufacturing requirements, different shear blades need to be replaced on cold shearing machines. In the prior art, a fork seat pin group connection structure with a threaded hook at the end of the oil cylinder connected to the shear blade seat is often used. Referring to Figure 1 as shown, this structure uses a hook with a traditional standard thread to be screwed into and clamped on the oil cylinder head. The hook opening faces downward, facilitating the fork seat pin group installed on the shear blade bottom plate to be easily detached when performing the downward shearing action, reset to the high position after shearing, and standby to complete the alternating operation connection, so as to ensure that the tool holder of the push-out cylinder can be quickly connected to replace the shear blade at any time. However, this mechanism requires manual assistance to replace the shear blade. The working environment at the cold shearing machine site is harsh, and the operation vibration is huge. The piston rings and the threaded connections at the head of the oil cylinder will loosen, rotate, and the piston rod will drift outward. The coupling is relatively precise, with a small effective clearance, and it is in rigid contact after being in place. Therefore, the state of the threaded hook at the end of the oil cylinder changes instantaneously, and it may collide and interfere with the fork seat pin group of the moving upper tool holder. At the same time, during operation, it is not easy to detect the loosening and displacement of the threaded hook connection, and there is no certain regularity. The huge shearing force may cause the head of the push-out oil cylinder to bend, break, and be scrapped.

[0004] An improved solution is to adopt a semi-groove concave quick connection structure with a threaded mushroom head at the end of the tool-changing oil cylinder connected to the upper shear blade seat. Referring to Figure 2 as shown. This structure avoids the problems of thread loosening and piston rod rotation during the operation of the cold shearing machine. However, there are still the phenomena of piston rod outward drift during the operation of the cold shearing machine equipment, and damage to the equipment after the mushroom head at the end of the oil cylinder collides and interferes with the semi-groove quick connection of the moving upper tool holder, resulting in bending and damage to the head of the push-out oil cylinder. Summary of the Invention

[0005] By providing a quick-disconnect coupling device for a cold shearing machine in the embodiments of this application, the problems in the prior art that the connection between the shear blade and the oil cylinder is prone to interference and deformation and damage are solved, and the convenient replacement and reliable operation of the shear blade of the cold shearing machine are realized.

[0006] In a first aspect, an embodiment of the present invention provides a quick-release clutch device for a cold shear, including a hook coupler, a hinge shaft seat, a connecting rod, and two hinge chain plates. The hook coupler is connected to an oil cylinder and can extend and retract under the drive of the oil cylinder; the hinge shaft seat is connected to the upper shear blade seat body, and the two hinge chain plates are respectively connected to both sides of the hinge shaft seat; both ends of the connecting rod are respectively connected to one ends of the two hinge chain plates away from the hinge shaft seat.

[0007] In combination with the first aspect, in a possible implementation manner, a card slot is provided at the lower end of the hook coupler, and the inner wall of one end of the card slot close to the upper shear blade seat body is in a slope shape.

[0008] In combination with the first aspect, in a possible implementation manner, the hinge shaft seat is connected to the upper shear blade seat body by screws, and the screws pass through the hinge shaft seat and are screwed into the upper shear blade seat body.

[0009] In combination with the first aspect, in a possible implementation manner, the two hinge chain plates are connected to the hinge shaft seat by a pin shaft. The pin shaft sequentially passes through one hinge chain plate, the hinge shaft seat, and the other hinge chain plate; the two hinge chain plates can rotate around the pin shaft.

[0010] In combination with the first aspect, in a possible implementation manner, a hole is provided at one end of the pin shaft, and an opening pin is inserted into the hole for fixing the hinge shaft seat and the two hinge chain plates.

[0011] In a second aspect, an embodiment of the present invention provides a method for replacing a shear blade of a cold shear, including: blade removal: the oil cylinder drives the hook coupler to extend, and the hook coupler abuts against the hinge shaft seat and pushes the hinge shaft seat out of the working position;

[0012] Upper blade: The hook coupler connects the connecting rod of the new shear blade, and under the drive of the oil cylinder, drags the new shear blade to the working position;

[0013] Hook withdrawal: The hook coupler extends slightly forward under the drive of the oil cylinder, so that a gap appears between the hook coupler and the connecting rod of the new shear blade. The hinge chain plate of the new shear blade rotates downward along the axis of the return shaft under the action of gravity, and the connection is disengaged.

[0014] One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages: In the embodiments of the present invention, by adopting a hook connector and a connecting rod, the hook connector is connected to the oil cylinder, and the connecting rod is connected to the shear blade. When replacing the shear blade, the hook connector hooks the connecting rod and drags the shear blade to the working position. After the shear blade is in place, the hook connector retreats slightly, creating a gap between the hook connector and the connecting rod. Then, under the action of gravity, the connecting rod rotates downward and disengages from the hook connector, effectively solving the problem that the shear blade is easily interfered and collided with the oil cylinder during operation, and further realizing the quick replacement of the shear blade and ensuring the safe and reliable operation of the cold shear machine in the future. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments of the present invention or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0016] Figure 1 Schematic diagram of a fork seat pin group connection structure;

[0017] Figure 2 Schematic diagram of a semi-groove concave quick connection structure;

[0018] Figure 3 Connection state diagram of the quick disengagement device provided in this embodiment;

[0019] Figure 4 Top view of the connection state of the quick disengagement device provided in this embodiment;

[0020] Figure 5 Separation state diagram of the quick disengagement device provided in this embodiment;

[0021] Figure 6 Top view of the separation state of the quick disengagement device provided in this embodiment;

[0022] Figure 7 Pushing-out state diagram of the quick disengagement device provided in this embodiment.

[0023] Reference numerals: 1 - oil cylinder; 2 - hook connector; 3 - connecting rod; 4 - upper shear blade seat body; 5 - articulated chain plate; 6 - articulated shaft seat; 7 - pin shaft; 8 - screw; 9 - split pin. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0025] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. The terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. In addition, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0026] This embodiment provides a quick-disconnect coupling device for a cold shear. Please refer to the accompanying drawings in the specification Figures 3 to 6 .

[0027] Refer to Figure 3 and Figure 4 As shown, a quick-disconnect coupling device for a cold shear includes a hook coupler 2, a hinge axle seat 6, a connecting rod 3, and two hinge chain plates 5. The hook coupler 2 is connected to the oil cylinder 1 and can extend and retract under the drive of the oil cylinder 1; the hinge axle seat 6 is connected to the upper shear blade seat body 4, and the two hinge chain plates 5 are respectively connected to both sides of the hinge axle seat 6; both ends of the connecting rod 3 are respectively connected to one end of the two hinge chain plates 5 far from the hinge axle seat 6.

[0028] In the embodiments of the present invention, by adopting the hook coupler 2 and the connecting rod 3, the hook coupler 2 is connected to the oil cylinder 1, and the connecting rod 3 is connected to the shear blade. When replacing the shear blade, the hook coupler 2 hooks the connecting rod 3 and drags the shear blade to the working position. After the shear blade is in place, the hook coupler 2 retracts slightly, creating a gap between the hook coupler 2 and the connecting rod 3. Then, under the action of gravity, the connecting rod 3 rotates downward and disengages from the hook coupler 2, effectively solving the problem that the shear blade is connected to the oil cylinder 1 and is prone to interference and collision during operation, thereby realizing the quick replacement of the shear blade and ensuring the safe and reliable operation of the cold shear in the future.

[0029] A clamping groove is formed at the lower end of the hook coupler 2, and the inner wall of the clamping groove near one end of the upper shear blade seat body 4 is in a slope shape.

[0030] The clamping groove is an important structure for enabling the upper shear blade seat body 4 to be disengaged from the oil cylinder 1 after the shear blade reaches the working position. The opening of the clamping groove faces downward, and the inner wall of the clamping groove near one end of the upper shear blade seat body 4 includes a section of vertical inner wall so as to have sufficient contact surface with the connecting rod 3. The vertical inner wall is connected to the inclined inner wall, and the inclined inner wall is inclined in the direction close to the upper shear blade seat body 4 at the connection with the vertical inner wall, so that when there is a gap between the hook coupler 2 and the connecting rod 3, the connecting rod 3 can slide downward along the inner wall of the clamping groove under the action of gravity.

[0031] The hinge shaft seat 6 is connected to the upper shear blade seat body 4 by screws 8, and the screws 8 pass through the hinge shaft seat 6 and are screwed into the upper shear blade seat body 4. Two hinge chain plates 5 are connected to the hinge shaft seat 6 by a pin shaft 7, and the pin shaft 7 sequentially passes through one hinge chain plate 5, the hinge shaft seat 6 and the other hinge chain plate 5; the two hinge chain plates 5 can rotate around the pin shaft 7.

[0032] The hinge shaft seat 6 is rotatably connected to the two hinge chain plates 5 by the pin shaft 7. At the same time, the hinge shaft seat 6 is connected to the upper shear blade seat body 4 by screws 8. When shearing upwards, the hook coupler 2 hooks the connecting rod 3, and then drives the hinge chain plate 5, the hinge shaft seat 6 and the upper shear blade seat body 4 in sequence. The upper shear blade is installed on the upper shear blade seat body 4, and the oil cylinder 1 drives the hook coupler 2 to act, so that the upper shear blade moves to the working position. During work, the hook coupler 2 and the upper shear blade seat body 4 are disconnected, the connecting rod 3 and the hinge chain plate 5 rotate to be vertical, and the hinge shaft seat 6 faces the hook coupler 2. When unloading the shear blade, the oil cylinder 1 drives the hook coupler 2 to extend until it abuts against the hinge shaft seat 6, and continues to extend to push the upper shear blade seat body 4 out of the working position.

[0033] One end of the pin shaft 7 is provided with a hole, and a split pin 9 is inserted into the hole for fixing the hinge shaft seat 6 and the two hinge chain plates 5. The design of inserting the split pin 9 into one end of the pin shaft 7 to fix the hinge shaft seat 6 and the two hinge chain plates 5 is convenient for disassembly.

[0034] This device ensures that the shear blade can be replaced more quickly, the whole process of the shearing machine work remains safe, effectively solves the malignant accident that the oil cylinder 1 often touches the shear blade in the past, resulting in scrapping, and reduces the pressure of workers observing, maintaining and servicing the equipment.

[0035] The interface size of this device can be adapted to the original shearing machine equipment, and the parts of the original equipment can still be used without waste. Only by manufacturing and installing this quick disconnection device at low cost can the shear blade be quickly and safely replaced at the production site and operate with zero faults.

[0036] This embodiment provides a method for replacing the shear blade of a cold shearing machine. Please refer to the accompanying drawings in the specification together Figures 3 to 7. Specifically, it includes:

[0037] Blade unloading: The oil cylinder 1 drives the hook coupler 2 to extend. The hook coupler 2 abuts against the articulated shaft seat 6 and pushes the articulated shaft seat 6 out of the working position.

[0038] Blade loading: The hook coupler 2 connects the connecting rod 3 of the new shear blade, and under the drive of the oil cylinder 1, drags the new shear blade to the working position; This step requires manual assistance to hang the connecting rod 3 on the hook coupler 2, which is the only step that requires manual intervention during the use of this device.

[0039] Hook retraction: The hook coupler 2 extends slightly forward under the drive of the oil cylinder 1, creating a gap between the hook coupler 2 and the connecting rod 3 of the new shear blade. The articulated link plate 5 of the new shear blade rotates downward along the rotation axis under the action of gravity and disengages the connection.

[0040] After hook retraction, the hook coupler 2 is completely disengaged from the shear blade and there is a certain distance between them, resulting in a large mutual spatial gap during the shearing movement. No matter how severe the working conditions of the cold shear machine are and how large the operating vibration is, and even if there are phenomena such as loosening, rotation of the oil cylinder 1 and the head thread connection, and outward drift of the piston rod, there will be no collision interference, ensuring the safe and reliable operation of the equipment.

[0041] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other, and the key point of each embodiment is to illustrate the differences from other embodiments.

[0042] The above embodiments are only used to illustrate the technical solutions of the present application, rather than limiting the present application; Although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: They can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; And these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the present application.

Claims

1. A quick release coupling device for a cold shear machine, characterized in that, it includes a hook connector (2), a hinge shaft seat (6), a connecting rod (3) and two hinge chain plates (5); The hook connector (2) is connected to the oil cylinder (1) and can extend and retract under the drive of the oil cylinder (1); The hinge shaft seat (6) is connected to the upper shear blade seat body (4), and the two hinge chain plates (5) are respectively connected to both sides of the hinge shaft seat (6); Both ends of the connecting rod (3) are respectively connected to one end of the two hinge chain plates (5) far from the hinge shaft seat (6); A clamping groove is formed at the lower end of the hook connector (2), and the inner wall of one end of the clamping groove close to the upper shear blade seat body (4) is in a slope shape; The hinge shaft seat (6) is connected to the upper shear blade seat body (4) by screws (8), and the screws (8) pass through the hinge shaft seat (6) and are screwed into the upper shear blade seat body (4); It also includes: blade unloading: the oil cylinder (1) drives the hook connector (2) to extend, and the hook connector (2) abuts against the hinge shaft seat (6) and pushes the hinge shaft seat (6) out of the working position; Upper blade: The hook connector (2) connects the connecting rod (3) of the new shear blade, and under the drive of the oil cylinder (1), drags the new shear blade to the working position; Hook retraction: The hook connector (2) extends slightly forward under the drive of the oil cylinder (1), so that a gap appears between the hook connector (2) and the connecting rod (3) of the new shear blade, and the hinge chain plate (5) of the new shear blade rotates downward along the axial direction of the return shaft under the action of gravity, and the connection is disengaged.

2. The quick release coupling device for a cold shear machine according to claim 1, characterized in that, The two hinge chain plates (5) are connected to the hinge shaft seat (6) by a pin shaft (7), and the pin shaft (7) sequentially passes through one hinge chain plate (5), the hinge shaft seat (6) and the other hinge chain plate (5); The two hinge chain plates (5) can rotate around the pin shaft (7).

3. The quick release coupling device for a cold shear machine according to claim 2, characterized in that, A hole is formed at one end of the pin shaft (7), and a split pin (9) is inserted into the hole for fixing the hinge shaft seat (6) and the two hinge chain plates (5).

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