Cutter locking assembly of circular shearing machine

Abstract

The utility model belongs to the technical field of tool changing equipment of a circular shearing machine, and relates to a tool locking assembly of the circular shearing machine. Comprising a cutter locking cylinder, a cutter locking shaft and a cutter body lock head are arranged in the cutter locking cylinder, the outer end of the cutter locking shaft is connected with a linear driving unit in a rotating body, the outer end of the cutter body lock head is fixed to one end of a cutter body, the outer diameter of the cutter body is larger than that of the cutter body lock head, a cutter locking hole is formed in the inner end of the cutter locking shaft, and a locking ring is arranged at the outer end of the cutter locking hole. A plurality of clamping petal inlets distributed in the circumferential direction of the inner hole are formed in the inner wall of the locking ring, a plurality of clamping petals distributed in the circumferential direction are arranged on the cutter body lock head, and the clamping petals and the clamping petal inlets are equal in number and are in one-to-one correspondence. Compared with the prior art, the cutter locking assembly of the circular shearing machine has the advantages that the cutter changing convenience is improved, so that cutter changing can be rapidly completed, and the downtime is shortened; and 2, the cutter body is firmly locked, so that the production safety is guaranteed. 3, the maintenance is convenient, and the maintenance cost and the maintenance time are reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of circular shearing machine knife changing equipment and relates to a knife locking component of a circular shearing machine. Background Art

[0002] A circular shear, also known as a disc shear or disc shear, is a mechanical device that uses a rotating disc cutter to cut materials. When cutting different types of profiles, the cutter must be replaced to ensure shear quality. However, current circular shears require a cumbersome tool lock during the tool change process, wasting considerable time. Summary of the Invention

[0003] The purpose of the present invention is to solve the above-mentioned problems and provide a knife locking assembly for a circular shearing machine that can improve the convenience of knife changing.

[0004] To achieve the above-mentioned purpose, the present invention adopts the following technical solutions: the knife locking assembly of the circular shearing machine is characterized in that it includes a knife locking cylinder, a knife locking shaft and a knife body locking head are provided in the knife locking cylinder, the outer end of the knife locking shaft is connected to the linear drive unit in the rotating body, the outer end of the knife body locking head is fixed on one end of the knife body, and the outer diameter of the knife body is larger than the outer diameter of the knife body locking head, a knife locking hole is provided on the inner end of the knife locking shaft, a locking ring is provided on the outer end of the locking hole, a plurality of card flap inlets distributed along the circumference of the inner hole are provided on the inner wall of the locking ring, a plurality of card flaps distributed along the circumference are provided on the knife body locking head, the number of the card flaps and the card flap inlets are equal and one-to-one corresponding, and a plurality of card flap locking grooves equal to the number of the card flaps distributed along the circumference are provided on the inner surface of the locking ring.

[0005] After the flap of the knife body locking head passes through the flap entrance, the knife body locking head or the knife locking shaft rotates, and the rotation makes the flap correspond to the circumference of the flap locking groove, and finally it is locked by the linear drive unit, so that the locking can be completed quickly. At this time, the end of the tool is against one end of the knife locking cylinder; thus, the tool can be changed quickly and accurately, which improves work efficiency and is particularly suitable for scenarios where frequent tool replacement is required; and the tool can be firmly locked during use, avoiding accidental falling off due to operational errors and increasing operational safety; the one-to-one correspondence design of the flap and the flap entrance ensures the accuracy of tool locking and reduces failures or damage caused by poor matching; the overall design is compact, reduces space occupancy, is suitable for various working environments, and improves the adaptability of the equipment.

[0006] In the aforementioned circular shears' blade lock assembly, the linear drive unit comprises a rotating, telescopic cylinder fixed to a rotating body, the output end of which is connected to the outer end of the blade lock shaft. Locking the blade through the rotating, telescopic cylinder ensures reliability during use, tightly securing the blade to the blade lock cylinder and preventing it from falling off during rotation.

[0007] In the aforementioned circular shears blade lock assembly, the blade lock includes a base connected to one end of the blade, a pin disposed on the base, the inner end of the pin being removably secured to the base, and a plurality of circumferentially evenly distributed locking flaps disposed on the outer end of the pin. This removable securement facilitates subsequent maintenance and reduces operating costs.

[0008] In the aforementioned circular shearing machine blade locking assembly, the pin is fixed in the threaded hole of the base via a threaded section at the outer end, and a lock nut is provided between the threaded section and the base. The lock nut can effectively prevent loosening and ensure safety in use.

[0009] In the above-mentioned locking blade assembly of the circular shearing machine, the threaded section is further provided with an anti-loosening washer located between the base and the anti-loosening nut. The anti-loosening washer can further prevent loosening and ensure safety in use.

[0010] In the aforementioned locking blade assembly for the circular shearing machine, the outer diameter of the pin is slightly smaller than the inner diameter of the locking ring. This enhances the stability of the connection and prevents loosening or deviation during operation. The slightly smaller outer diameter also makes it easier for the pin to be inserted into the locking ring during assembly.

[0011] In the aforementioned circular shearing machine's blade lock assembly, the outer diameter of the blade lock shaft matches the inner diameter of the blade lock cylinder. This matching outer and inner diameters ensures a tight fit between the blade lock shaft and the cylinder, reducing play and improving overall stability and operational precision. This tight fit reduces vibration and noise during rotation or cutting, enhancing the stability and reliability of the equipment.

[0012] In the aforementioned circular shearing machine's blade locking assembly, the axes of the blade locking shaft, blade lock head, and locking ring are aligned. This coaxial arrangement ensures more uniform force distribution, reduces vibration caused by eccentricity or misalignment, and enhances equipment stability. The centering structure simplifies assembly and maintenance, reduces operational complexity, and improves work efficiency.

[0013] In the above-mentioned knife locking assembly of the circular shearing machine, an impact-proof and damage-preventing buffer structure is provided between the knife locking cylinder and the knife body.

[0014] In the aforementioned circular shearing machine's locking blade assembly, the impact-damage prevention and buffering structure includes a curved outer chamfer on the inner wall of the outer end of the locking blade barrel, and a curved inner chamfer between the blade body and the blade body locking head. The curved chamfer design effectively disperses stress generated during impact, reducing stress concentration and the risk of component damage. The curved corner design provides a larger contact area, allowing for smoother absorption of impact force during impact and enhancing the buffering effect.

[0015] Compared with existing technologies, the advantages of this circular shearing machine's knife lock assembly are: 1. It improves the convenience of knife changes, allowing for quick changes and reducing downtime. 2. The knife body is securely locked, ensuring production safety. 3. It facilitates maintenance, reducing maintenance costs and time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram provided by the utility model.

[0017] Figure 2 It is a structural schematic diagram of the knife body locking head and the knife locking block provided by the utility model when unlocking and entering and exiting.

[0018] Figure 3 It is a structural diagram of the knife body locking head and the knife locking block when locked.

[0019] In the figure, there are the knife locking cylinder 1, the knife locking shaft 2, the rotating body 2a, the knife body locking head 3, the knife locking hole 21, the locking ring 22, the flap entrance 23, the flap 31, the flap locking groove 24, the knife body 4, the linear drive unit 41, the rotary telescopic cylinder 42, the base 32, the pin shaft 33, the threaded section 331, the threaded hole 332, the anti-loosening nut 5, the anti-loosening gasket 6, and the impact anti-damage buffer structure 7. DETAILED DESCRIPTION

[0020] like Figure 1 As shown, the knife locking assembly of the circular shearing machine includes a knife locking cylinder 1, a knife locking shaft 2 and a knife body locking head 3 are provided in the knife locking cylinder 1, and the knife body locking head 3 can move axially and rotate circumferentially in the knife locking cylinder 1, and the outer end of the knife locking shaft 2 is connected to the linear drive unit 41 in the rotating body 2a, and the rotating body 2a is responsible for driving the knife body 4 to rotate. The outer end of the knife body locking head 3 is fixed on one end of the knife body 4, and the outer diameter of the knife body 4 is larger than the outer diameter of the knife body locking head 3. The knife body 4 is cylindrical, and a knife locking hole 21 is provided on the inner end of the knife locking shaft 2, and a locking ring 22 is provided on the outer end of the knife locking hole 21. Four card flap inlets 23 are evenly distributed along the circumference of the inner hole on the inner wall of the locking ring 22, and four card flaps 31 are evenly distributed along the circumference on the knife body locking head 3. The number of card flaps 31 and the card flap inlets 23 are equal and one-to-one corresponding. A number of card flap locking grooves 24 are provided on the inner surface of the locking ring 22, which are equal to the number of card flaps 31.

[0021] More specifically, the linear drive unit 41 includes a rotary telescopic oil cylinder 42 fixed to the rotating body 2a, and the output end of the rotary telescopic oil cylinder 42 is fixedly connected to the outer end of the knife lock shaft 2; the knife body lock head 3 includes a base 32 connected to one end of the knife body 4, and a pin 33 is provided on the base 32. The inner end of the pin 33 is detachably fixed to the base 32, and the outer end of the pin 33 is provided with four circumferentially evenly distributed clips 31, and the clips 31 and the pin 33 are connected as a whole;

[0022] To facilitate maintenance, the pin shaft 33 is fixed in the threaded hole 332 of the base 32 through the threaded section 331 at the outer end. A lock nut 5 is provided between the threaded section 331 and the base 32. A lock gasket 6 is also provided on the threaded section 331 and located between the base 32 and the lock nut 5.

[0023] In order to improve structural strength and assembly reliability, the outer diameter of the pin shaft 33 is slightly smaller than the inner diameter of the locking ring 22; the outer diameter of the locking knife shaft 2 is adapted to the inner diameter of the locking knife cylinder 1; the central axis of the locking knife shaft 2, the knife body locking head 3 and the locking ring 22 are located on the same straight line.

[0024] In order to ensure the service life, an impact-proof and damage-proof buffer structure 7 is provided between the locking knife cylinder 1 and the knife body 4. The impact-proof and damage-proof buffer structure 7 includes an annular arc-shaped outer chamfer arranged on the inner wall of the outer end of the locking knife cylinder 1, and an annular arc-shaped inner chamfer is provided between the knife body 4 and the knife body locking head 3.

[0025] Usage process:

[0026] During assembly, first extend the knife locking shaft 2 inward, then insert the knife body locking head 3 of the knife body 4 into the knife locking cylinder 1, and then align the card flap 31 with the card flap entrance 23. The knife body 4 continues to advance so that the card flap 31 enters the knife locking hole 21 through the card flap entrance 23, and then rotates so that the card flap 31 is misaligned with the card flap entrance 23, and then aligns the card flap 31 with the card flap locking groove 24. Finally, the knife locking shaft 2 is retracted outward to allow the card flap 31 to enter the card flap locking groove 24 to complete the locking.

[0027] To unlock, just do the reverse operation.

[0028] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

[0029] Although this article uses the knife locking cylinder 1, knife locking shaft 2, rotating body 2a, knife body locking head 3, knife locking hole 21, locking ring 22, card flap entrance 23, card flap 31, card flap locking groove 24, knife body 4, linear drive unit 41, rotary telescopic cylinder 42, base 32, pin shaft 33, threaded section 331, threaded hole 332, anti-loosening nut 5, anti-loosening gasket 6, impact anti-damage buffer structure 7, etc. more frequently, these terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention.

Claims

1. A knife lock assembly for a circular shearing machine, characterized in that: The present invention comprises a knife locking cylinder (1), wherein a knife locking shaft (2) and a knife body locking head (3) are provided in the knife locking cylinder (1), the outer end of the knife locking shaft (2) is connected to a linear drive unit (41) in a rotating body (2a), the outer end of the knife body locking head (3) is fixed to one end of the knife body (4), and the outer diameter of the knife body (4) is larger than the outer diameter of the knife body locking head (3), a knife locking hole (21) is provided on the inner end of the knife locking shaft (2), a locking ring (22) is provided on the outer end of the knife locking hole (21), a plurality of flap inlets (23) distributed along the circumference of the inner hole are provided on the inner wall of the locking ring (22), a plurality of flaps (31) distributed along the circumference are provided on the knife body locking head (3), the number of the flaps (31) and the flap inlets (23) are equal and correspond one to one, and a plurality of flap locking grooves (24) distributed along the circumference and equal to the number of the flaps (31) are provided on the inner surface of the locking ring (22).

2. The knife locking assembly of the circular shearing machine according to claim 1, characterized in that: The linear drive unit (41) comprises a rotary telescopic oil cylinder (42) fixed on the rotating body (2a), and the output end of the rotary telescopic oil cylinder (42) is connected to the outer end of the knife locking shaft (2).

3. The locking blade assembly of the circular shearing machine according to claim 1, characterized in that: The blade lock (3) includes a base (32) connected to one end of the blade (4), a pin (33) is provided on the base (32), the inner end of the pin (33) is detachably fixed to the base (32), and a plurality of clasps (31) are evenly distributed along the circumference are provided on the outer end of the pin (33).

4. The knife locking assembly of the circular shearing machine according to claim 3, characterized in that: The pin (33) is fixed in the threaded hole (332) of the base (32) through the threaded section (331) at the outer end, and a locking nut (5) is provided between the threaded section (331) and the base (32).

5. The knife locking assembly of the circular shearing machine according to claim 4, characterized in that: The threaded section (331) is also provided with a locking washer (6) located between the base (32) and the locking nut (5).

6. The knife locking assembly of the circular shearing machine according to claim 4, characterized in that: The outer diameter of the pin (33) is slightly smaller than the inner diameter of the locking ring (22).

7. The knife locking assembly of a circular shear according to any one of claims 1 to 6, characterized in that: The outer diameter of the knife locking shaft (2) is adapted to the inner diameter of the knife locking cylinder (1).

8. The knife locking assembly of a circular shear according to any one of claims 1 to 6, characterized in that: The central axes of the knife locking shaft (2), the knife body locking head (3) and the locking ring (22) are located on the same straight line.

9. The knife locking assembly of a circular shear according to any one of claims 1 to 6, characterized in that: An impact-damage prevention buffer structure (7) is provided between the knife-locking cylinder (1) and the knife body (4).

10. The knife locking assembly of the circular shearing machine according to claim 9, characterized in that: The impact damage prevention buffer structure (7) includes an arc-shaped outer chamfer provided on the inner wall of the outer end of the knife locking cylinder (1), and an arc-shaped inner chamfer is provided between the knife body (4) and the knife body locking head (3).

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