Hinge cutter for bending machining

Abstract

The utility model discloses a hinge cutter for bending processing, which comprises a pressing cutter main body and a pressing plate, an auxiliary cutter can move in a cavity formed after the pressing cutter main body is matched with the pressing plate, the auxiliary cutter is arranged at the end part of the pressing cutter main body, the tail part of the auxiliary cutter is connected with a sliding block, the sliding block is connected with a connecting pin, and the connecting pin is connected with the pressing cutter main body. The sliding block is arranged in a groove formed in the pressing cutter body, the connecting pin is arranged in a sliding groove formed in the pressing plate, the sliding block is controlled to move through the connecting pin, and then the sliding block is in linkage with the auxiliary cutter to drive the auxiliary cutter to move in a cavity in the end of the pressing cutter body, so that shrinkage of the auxiliary cutter is achieved. The auxiliary cutter is connected with a reset spring, and the other section of the reset spring is fixedly arranged on the pressing plate. Compared with the prior art, operation is more flexible and convenient, and stability is higher.

Description

Technical Field

[0001] This invention pertains to bending processing tooling, specifically relating to a hinge tool for bending processing. Background Technology

[0002] In existing flexible bending center machines, pneumatic hinge cutters, including those using free-fall, pneumatic, and electric methods, are problematic. When using free-fall motion, they easily scratch the sheet metal during processing, causing friction and workpiece misalignment, resulting in significant processing errors. With pneumatic operation, the same hinge cutter cannot be used interchangeably with different workpieces of varying forming heights. Pneumatic cutters must avoid the maximum stroke range of the cylinder during clearance, meaning a cutter with a high forming height cannot avoid a workpiece with a low forming height. Electric servo motor-driven cutters require additional components such as servo motors, lead screws, and racks. In practice, these existing methods cannot effectively adapt to the application of sheet metal bending centers, resulting in unsatisfactory bending and forming performance.

[0003] In the cabinet door manufacturing process, bending is involved using a hinge cutter. The cutter edge needs to perfectly match the fold line to ensure the bending effect. However, for edge bending after one side has already been bent, the existing bend can obstruct the upward lifting of the cutter edge. Therefore, we use a hinge cutter. The hinge cutter uses a combination structure to make part of the cutter edge movable, which can avoid obstruction of the bend during the upward lifting process. Utility Model Content

[0004] Purpose of the utility model: The purpose of this utility model is to provide a hinge tool for bending processing, which improves the convenience and flexibility of use.

[0005] Technical solution: A hinge tool for bending processing, the hinge tool includes a pressure cutter body and a pressure plate, and a secondary cutter that can move within the cavity formed after the pressure cutter body and the pressure plate are engaged. The secondary cutter is disposed at the end of the pressure cutter body, and a slider is connected to the tail of the secondary cutter. The slider is connected to a connecting pin. The slider is placed in a groove opened in the pressure cutter body, and the connecting pin is placed in a groove opened in the pressure plate. The slider is controlled to move by the connecting pin, and the slider then links with the secondary cutter, driving the secondary cutter to move within the cavity at the end of the pressure cutter body, thereby realizing the retraction of the secondary cutter.

[0006] The secondary blade is connected to a return spring, and the other end of the return spring is fixedly mounted on the pressure plate.

[0007] Furthermore, the secondary blade is equipped with a rolling bearing, which rolls within a slide rail on the pressure plate, thereby controlling the movement trajectory of the secondary blade.

[0008] The slide is curved and opens to one side of the pressure plate, allowing the auxiliary blade to move away from the pressure plate or the central axis of the pressure blade body.

[0009] Furthermore, the reset spring is placed in a slot on the upper side of the pressure knife body. The slot restricts the movement space of the reset spring. The slot includes a sealing plate to achieve closure.

[0010] Furthermore, the auxiliary blade and the slider are connected by a pivot pin.

[0011] The pressure plate is equipped with a side sealing plate at the exit of the slide.

[0012] Furthermore, the bending blade of this hinge cutter is composed of a secondary blade and a main blade.

[0013] Furthermore, the hinge cutter is fixedly mounted in the bending equipment via the mounting part of the pressure cutter body, and the connecting pin is moved by an action switch on the bending equipment, including an actuator that controls the movement of the connecting pin within the slide groove.

[0014] Beneficial effects: The hinge cutter provided by this utility model moves within a groove via a connecting pin, and the extension and retraction of the secondary cutter is controlled by a drive slider. The movement of the secondary cutter within the groove by the slider improves stability. Furthermore, the movement of the secondary cutter is provided with rolling bearings and sliding, and reset and stabilization are controlled by a return spring. Compared with the pneumatic and free-dangling settings used in existing technologies, the control is more precise, preventing loosening or excessive movement, avoiding product damage, and improving the processing quality of cabinet door bending. Attached Figure Description

[0015] Figure 1 This is a structural diagram of the hinge cutter described in this utility model;

[0016] Figure 2 This is an overall view of the hinge cutter;

[0017] Figure 3 It is the internal structure of the hinge cutter. Figure 1 ;

[0018] Figure 4 This is a schematic diagram showing the installation position of the upper sealing plate on the pressure plate;

[0019] Figure 5 This is a schematic diagram of the reset spring and its mounting structure on the pressure knife body;

[0020] Figure 6 This is a schematic diagram of the resetting spring after assembly;

[0021] Figure 7 This is a diagram showing the installation structure between the connecting pin and the slider. Detailed Implementation

[0022] To illustrate the structure of the hinge cutter described in this utility model in detail, further explanation is provided below with reference to the accompanying drawings.

[0023] Combination Figure 1 and Figure 2 The structure shown, Figure 2 This is a display of the overall external structure of this utility model. Figure 1 This is the structure seen after removing the pressure plate 2. The hinge cutter described in this utility model includes a pressure cutter body 1 and a pressure plate 2, and also includes… Figure 1 The auxiliary blade 3 described above also has a cutting edge at the bottom of the pressure blade body 1, such as at the bottom of the protrusion 8, which aligns with the cutting edge of the auxiliary blade 3. The hinge blade is fixedly set at the bending center. During cabinet door processing, the cutting edge contacts the metal sheet, and then a force is applied to the metal sheet, causing it to bend along the straight line of the cutting edge. This operation achieves the cabinet door processing. Further integration... Figure 1 In the structure shown, the secondary blade 3 is located on the left side, and the main blade on the pressure body 1 is located on the right side. For the first bending operation of a metal plate, the existing bending equipment and other controls will not affect the retraction process. However, during the bending of adjacent sides, the retraction operation will be affected by the previous bending part. Those skilled in the art should understand this operation. This utility model also controls the secondary blade to move away from the position shown in the figure when bending without force, thereby avoiding the influence of the protruding part shown on the left side of the secondary blade 3 (the protruding part on the left side is close to the corner of the previous bending side). In terms of movement, the secondary blade 3 will shift downward and to the right, and the protruding part on the left side will not affect the retraction process.

[0024] Specific operations, combined with Figure 1 and Figure 3 As shown, the auxiliary blade 3 is connected to the slider 6 via a pivot pin 5. The slider 6 is placed in the groove opened in the pressure blade body 1. The other end of the slider 6 is provided with a connecting pin 7. The connecting pin 7 is controlled by the actuator and action switch of the bending machining center, driving the connecting pin 7 to move in the slide groove opened in the pressure plate 2. When moving downward, the auxiliary blade 3 moves downward. At the same time, a rolling bearing 4 is provided on the auxiliary blade 3. The rolling bearing 4 is provided with a slide 201 on the pressure plate 2. The pivot pin 5 in the auxiliary blade 3 is movable. When the auxiliary blade 3 moves downward, it also combines with gravity to make the protrusion on the left side of the auxiliary blade 3 move downward and to the right, thus making room for the bent part at the edge of the cabinet door. For resetting, a reset spring 9 is provided. Figure 3 As shown. Further explanation is needed, in conjunction with... Figure 3The slide 201 shown has an opening on its side that is wider than or equal to the straight edge of the auxiliary cutter 3 at the pivot pin 5. The straight edge is to ensure the stability of the force during the processing. When the straight edge moves down to the opening of the slide 201, it is unrestricted, and the auxiliary cutter 3 can then meet the obstacle avoidance requirement.

[0025] Combination Figure 4 As shown in the structure, we can see that there is a certain space between the straight edge of the secondary blade 3 and the edge of the pressure plate 2, such as the width of the bottom plate of the side sealing plate 11. The width is reduced at the opening of the slide 201, which facilitates the movement of the secondary blade 3.

[0026] To improve structural stability and facilitate installation, the pressure knife body 1 and pressure plate 2 preferably adopt an interlocking structure, thereby increasing the force applied to the hinge knife. Regarding the aforementioned return spring 9, we employ... Figure 5 The side slot 101 structure shown is used to accommodate it, and then it is closed by the sealing plate 10.

[0027] Figure 6 yes Figure 5 Assembly drawing of the structure shown. Figure 6 The installation position of the return spring 9 is shown, as well as the position of the connecting pin 7 and the mounting part 103 at the end of the pressure knife body 1. The mounting part 103 is used to fix the hinge knife to the bending equipment. Figure 6 The diagram also illustrates the blade assembly structure of the hinge cutter, where the bent blade 12 is formed by the combination of the secondary blade 301 and the main blade 102.

[0028] Figure 7 An installation structure between the connecting pin 7 and the slider 6 is shown. The connection structure between the connecting pin 7 and the slider 6 includes a mating groove and a square part, and also includes a mounting pin that is inserted into the mounting hole of the slider 6 and then fixed by a pin. This structure can ensure the stability of the connecting pin 7 during operation.

[0029] The hinge cutter provided by this utility model has a downward connecting pin 7 and a stretched return spring 9. With the presence of the return spring 9, the entire movement is subjected to a certain tensile force, which can avoid the loosening and shaking that occurs in existing free-fall connection methods.

Claims

1. A hinge tool for bending operations, characterized in that, The hinge cutter comprises a pressing cutter body (1) and a pressing plate (2), a secondary cutter (3) is movable in a cavity formed after the pressing cutter body (1) and the pressing plate (2) are combined, the secondary cutter (3) is arranged at the end of the pressing cutter body (1), the tail of the secondary cutter (3) is connected with a sliding block (6), the sliding block (6) is connected with a connecting pin (7), the sliding block (6) is arranged in a groove arranged on the pressing cutter body (1), the connecting pin (7) is arranged in a sliding groove arranged on the pressing plate (2), the sliding block (6) is controlled to move through the connecting pin (7), the sliding block (6) further links the secondary cutter (3), and the secondary cutter (3) is driven to move in the cavity at the end of the pressing cutter body (1), so that the secondary cutter (3) is retracted. The secondary cutter (3) is connected with a reset spring (9), and the other end of the reset spring (9) is fixedly arranged on the pressing plate (2).

2. The hinge tool according to claim 1, wherein The secondary cutter (3) is provided with a rolling bearing (4), and the rolling bearing (4) rolls in a sliding groove (201) arranged on the pressing plate (2), so that the movement track of the secondary cutter (3) is controlled. The sliding groove (201) is curved and open to one side of the pressing plate (2), so that the secondary cutter (3) moves away from the central axis of the pressing plate (2) or the pressing cutter body (1).

3. The hinge tool according to claim 1, wherein The reset spring (9) is arranged in a side slot (101) on the pressing cutter body (1), the movement space of the reset spring (9) is limited through the side slot (101), and the side slot (101) comprises a sealing plate (10) arranged to realize sealing.

4. The hinge tool according to claim 1, wherein The secondary cutter (3) and the sliding block (6) are arranged through a rotating pin (5).

5. The hinge tool according to claim 1, wherein The pressing plate (2) is provided with a side sealing plate (11) at the outlet of the sliding groove (201).

6. The hinge tool according to claim 1, wherein The cutting edge (12) for bending of the hinge cutter is formed by combining a secondary cutting edge (301) and a main cutting edge (102).

7. The hinge tool according to claim 1, wherein The hinge cutter is fixedly arranged in a bending device through the mounting portion (103) of the pressing cutter body (1), the connecting pin (7) is controlled to move through an action switch on the bending device, and an actuating mechanism is arranged for driving.

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