Improved structure of transverse cutting mechanism of fin die

Abstract

The utility model relates to the technical field of fin dies, and discloses an improved structure of a transverse cutting mechanism of a fin die, which comprises an upper transverse cutting knife and a lower transverse cutting knife, the lower transverse cutting knife is fixed below a fin advancing route, a transverse cutting sliding plate capable of moving up and down is arranged above the fin advancing route, and the upper transverse cutting knife is arranged on the transverse cutting sliding plate. An eccentric shaft perpendicular to the transverse cutting sliding plate is arranged above the transverse cutting sliding plate, a connecting frame capable of translating along the transverse cutting sliding plate is arranged at the top of the transverse cutting sliding plate, the eccentric shaft is driven by a driving assembly to rotate, the eccentric shaft is sleeved with the connecting frame, and the connecting frame is used for converting rotary motion of the eccentric shaft into vertical motion of the transverse cutting sliding plate. According to the improved structure of the transverse cutting mechanism of the fin die, the rotary motion of the eccentric shaft is converted into the up-and-down motion of the transverse cutting upper knife through the combination of the eccentric shaft and the connecting frame, the action precision is high, the structure is stable, the vertical motion speed of the transverse cutting sliding plate and the transverse cutting upper knife is high, and the high-speed working requirement can be met.

Description

Technical Field

[0001] This utility model relates to the field of fin mold technology, and in particular to an improved structure of a fin mold cross-cutting mechanism. Background Technology

[0002] Air conditioner fin molds consist of multiple forming processes, with cross-cutting being the final step. Based on the required number of holes for the product, a command is issued via a punch press solenoid valve, causing the upper cross-cutting blade to move downwards, achieving the cutting for different hole counts and thus enabling the production of fins of varying lengths. During production, sometimes the cross-cutting position needs to be adjusted based on fin shrinkage and deformation, as well as the production requirements for fins with irregular cut shapes. This necessitates precise control of whether the upper cross-cutting blade cuts or not.

[0003] Conventional cross-cutting mechanisms use pneumatically driven striking blocks to move left and right, aligning or offsetting the striking blocks with the cross-cutting rods to achieve the function of cutting or not cutting. However, this method suffers from problems such as unbalanced cutting force, easy deviation of the cutting gap, and easy generation of burrs, and cannot meet the requirements of high-precision and high-speed cross-cutting.

[0004] Some other cross-cutting mechanisms have eliminated the conventional cross-cutting lever setting and use a motor to directly drive the vertical movement of the cross-cutting upper blade to complete the cross-cutting action. This can improve or even solve some problems existing in conventional cross-cutting mechanisms. However, in the electric drive type, transmission components such as belts and chains need to transmit cutting force, which is prone to failure and abnormality, resulting in short service life and high maintenance costs. Utility Model Content

[0005] Based on the above problems, the purpose of this utility model is to provide an improved structure for the fin mold cross-cutting mechanism, which makes the cross-cutting drive structure more stable and reliable, ensures forming accuracy, and meets the requirements of high precision and high punching speed cross-cutting.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An improved structure for a fin mold cross-cutting mechanism includes an upper cross-cutting blade and a lower cross-cutting blade. The lower cross-cutting blade is fixed below the fin's travel path. A cross-cutting sliding plate capable of vertical movement is disposed above the fin's travel path. The upper cross-cutting blade is disposed on the cross-cutting sliding plate. An eccentric shaft arranged perpendicularly to the cross-cutting sliding plate is disposed above the cross-cutting sliding plate. A connecting frame capable of translating along the cross-cutting sliding plate is disposed on the top of the cross-cutting sliding plate. The eccentric shaft is driven to rotate by a drive assembly. The connecting frame is sleeved on the eccentric shaft and is used to convert the rotational motion of the eccentric shaft into the vertical motion of the cross-cutting sliding plate.

[0008] As an alternative, two sets of eccentric shafts and connecting frames are provided. The drive assembly includes a linkage shaft that is driven by the two eccentric shafts. The linkage shaft forms a 90° axial angle with both eccentric shafts. The rotation directions of the two eccentric shafts are opposite to counteract the lateral force of the eccentric shaft movement.

[0009] As an alternative, the linkage shaft and the eccentric shaft are driven by a helical gear.

[0010] As an alternative, the linkage shaft and the eccentric shaft are driven by a spiral bevel gear.

[0011] As an alternative, the linkage shaft and the eccentric shaft are driven by a spur bevel gear.

[0012] As an alternative, the linkage shaft and the eccentric shaft are driven by a worm gear.

[0013] As an alternative, the drive assembly also includes a servo motor connected to one of the eccentric shafts.

[0014] As an alternative, a translation guide rail is provided at the top of the transverse sliding plate, and a slider is provided on the translation guide rail. The bottom of the connecting frame is fixedly connected to the slider.

[0015] As an alternative, the improved structure of the fin mold cross-cutting mechanism also includes an upper cutter holder and a lower cutter holder. The lower cutter is fixed on the lower cutter holder, and the cross-cutting sliding plate is attached to one side of the upper cutter holder. The upper cutter holder is provided with a limiting rod that passes through the cross-cutting sliding plate. A baffle is provided on the limiting rod. The baffle and the upper cutter holder limit the two sides of the cross-cutting sliding plate. The cross-cutting sliding plate is provided with a stroke groove that allows the limiting rod to pass through.

[0016] As an alternative, a gearbox is provided on the upper tool holder, and an eccentric shaft is rotatably mounted in the gearbox, with one end of the eccentric shaft extending out of the gearbox and rotatably connected to the connecting frame.

[0017] The beneficial effects of this utility model are:

[0018] The improved structure of the fin die cross-cutting mechanism has the following advantages:

[0019] 1) By combining the eccentric shaft and the connecting frame, the rotational motion of the eccentric shaft is converted into the up-and-down motion of the cross-cutting upper blade. The action is highly accurate and the structure is stable. The vertical motion speed of the cross-cutting sliding plate and the cross-cutting upper blade is fast, which can meet the requirements of high-speed operation.

[0020] 2) When two eccentric shafts are set, by designing the two eccentric shafts to rotate in opposite directions, the lateral force of the eccentric shaft movement can be counteracted, ensuring the stability of the structure and the service life of the transmission components.

[0021] 3) Compared with belts and chains, gears, sliders and other transmission components have more stable operation, longer service life, greater power transmission and lower maintenance costs.

[0022] 4) The transverse cutting sliding plate moves vertically without a return spring and is not affected by lateral forces. The cutting gap between the upper and lower blades is uniform and there is no problem of gap slippage.

[0023] 5) The cross-cutting rod has been eliminated, and the upper mold of the entire mold does not have the cutting force to cut the fins, thus avoiding the phenomenon of mold eccentricity, as well as the problems of longitudinal cutting burrs and inability to cut. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the improved structure of the fin mold cross-cutting mechanism provided in this embodiment of the utility model;

[0025] Figure 2 This is a first-view view of the internal structure of the improved fin mold cross-cutting mechanism provided in this embodiment of the utility model;

[0026] Figure 3 This is a second-view view of the internal structure of the improved fin mold cross-cutting mechanism provided in this embodiment of the utility model;

[0027] Figure 4 This is a third-view diagram of the internal structure of the improved fin mold cross-cutting mechanism provided in this embodiment of the utility model.

[0028] In the attached image:

[0029] 1. Upper cross-cutting blade; 2. Lower cross-cutting blade; 3. Cross-cutting sliding plate; 4. Eccentric shaft; 5. Connecting frame; 6. Linkage shaft; 7. Servo motor; 8. Helical gear; 9. Translation guide rail; 10. Slider; 11. Upper blade holder; 12. Lower blade holder; 13. Limiting rod; 14. Baffle; 15. Gearbox. Detailed Implementation

[0030] 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.

[0031] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[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, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to 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.

[0034] Furthermore, the terms "first" and "second" are merely used to distinguish between different terms in description and do not have any special meaning.

[0035] Example 1:

[0036] This embodiment provides an improved structure for a fin mold cross-cutting mechanism, including an upper cross-cutting blade 1 and a lower cross-cutting blade 2. The lower cross-cutting blade 2 is fixed below the fin travel path. A cross-cutting sliding plate 3 that can move up and down is provided above the fin travel path. The upper cross-cutting blade 1 is disposed on the cross-cutting sliding plate 3. An eccentric shaft 4 arranged perpendicularly to the cross-cutting sliding plate 3 is disposed above the cross-cutting sliding plate 3. A connecting frame 5 that can translate along the cross-cutting sliding plate 3 is provided on the top of the cross-cutting sliding plate 3. The eccentric shaft 4 is driven to rotate by a drive assembly. The connecting frame 5 is sleeved on the eccentric shaft 4 and is used to convert the rotational motion of the eccentric shaft 4 into the up and down motion of the cross-cutting sliding plate 3.

[0037] Thus, by combining the eccentric shaft 4 and the connecting frame 5, the rotational motion of the eccentric shaft 4 is converted into the up-and-down motion of the cross-cutting upper blade 1. The motion is highly accurate and the structure is stable. The vertical motion speed of the cross-cutting sliding plate 3 and the cross-cutting upper blade 1 is fast, which can meet the requirements of high-speed operation.

[0038] Example 2:

[0039] Based on Embodiment 1, to improve the operational stability of the transverse sliding plate 3, at least two sets of eccentric shafts 4 and connecting brackets 5 are provided in this embodiment. Two sets are used as an example here; please refer to [link / reference]. Figures 1 to 4 As shown, the drive assembly includes a linkage shaft 6 that is connected to two eccentric shafts 4. The linkage shaft 6 and the two eccentric shafts 4 form a 90° axial angle. The rotation directions of the two eccentric shafts 4 are opposite to counteract the lateral force of the movement of the eccentric shafts 4. The drive assembly also includes a servo motor 7, which is connected to one of the eccentric shafts 4. In this embodiment, the linkage shaft 6 and the eccentric shaft 4 are driven by a helical gear 8.

[0040] Thus, the servo motor 7 directly drives one eccentric shaft 4 to rotate, and through the linkage shaft 6 drives another eccentric shaft 4 to rotate synchronously, thereby driving the two connecting frames 5 to drive the transverse sliding plate 3 to move up and down synchronously.

[0041] In addition, during the engagement of the helical gear 8, a thrust is generated along the axial direction of the linkage shaft 6, which causes a lateral force to move the eccentric shaft 4. By designing the rotation directions of the two eccentric shafts 4 to be opposite, the two lateral forces generated will cancel each other out, thereby ensuring that the linkage shaft 6 is accurately positioned and operates stably.

[0042] Optionally, a translation guide rail 9 is provided on the top of the transverse sliding plate 3, and a slider 10 is provided on the translation guide rail 9. The bottom of the connecting frame 5 is fixedly connected to the slider 10.

[0043] Therefore, by cooperating with the translation guide rail 9 and the slider 10, the linkage requirements between the connecting frame 5 and the transverse sliding plate 3 are met, and the horizontal displacement when the connecting frame 5 and the eccentric shaft 4 are linked is compensated, ensuring that the transverse sliding plate 3 only moves up and down.

[0044] Optionally, the improved structure of the fin mold cross-cutting mechanism also includes an upper cutter holder 11 and a lower cutter holder 12. The cross-cutting lower cutter 2 is fixed on the lower cutter holder 12, and the cross-cutting sliding plate 3 is attached to one side of the upper cutter holder 11. The upper cutter holder 11 is provided with a limiting rod 13 that passes through the cross-cutting sliding plate 3. The limiting rod 13 is provided with a baffle 14. The baffle 14 and the upper cutter holder 11 limit the two sides of the cross-cutting sliding plate 3. The cross-cutting sliding plate 3 is provided with a stroke groove that allows the limiting rod 13 to pass through.

[0045] Therefore, the upper cross-cutting blade 1 is floating relative to the upper blade holder 11, and the design of the baffle 14 and the stroke groove restricts the cross-cutting sliding plate 3 and the upper cross-cutting blade 1 to only move up and down, so as to accurately cooperate with the lower cross-cutting blade 2 to complete the cutting action.

[0046] Optionally, a gearbox 15 is provided on the upper tool holder 11, and the eccentric shaft 4 is rotatably disposed in the gearbox 15. One end of the eccentric shaft 4 extends out of the gearbox 15 and is rotatably connected to the connecting frame 5.

[0047] This ensures stable operation of the eccentric shaft 4, and the transmission connection structure between the eccentric shaft 4 and the linkage shaft 6 is hidden in the gearbox 15, ensuring stable transmission and facilitating maintenance.

[0048] Example 3:

[0049] Based on Embodiment 2, this embodiment provides an improved structure for the fin mold cross-cutting mechanism. The difference from Embodiment 2 is that the linkage shaft 6 and the eccentric shaft 4 are driven by a spiral bevel gear.

[0050] Spiral bevel gears have advantages such as smooth transmission, high load-bearing capacity, low noise, and long service life.

[0051] Example 4:

[0052] Based on Embodiment 2, this embodiment provides an improved structure for the fin mold cross-cutting mechanism. The difference from Embodiment 2 is that the linkage shaft 6 and the eccentric shaft 4 are driven by a straight bevel gear.

[0053] Spur bevel gears have advantages such as simple structure, low cost, and are especially suitable for low-speed and light-load transmission applications.

[0054] Example 5:

[0055] Based on Embodiment 2, this embodiment provides an improved structure for the fin mold cross-cutting mechanism. The difference from Embodiment 2 is that the linkage shaft 6 and the eccentric shaft 4 are driven by a worm gear.

[0056] Worm gear drives have advantages such as large transmission ratio, compact structure, safety self-locking, smooth operation, and low noise.

[0057] In summary, the improved structure of the fin mold cross-cutting mechanism proposed a new driving form for the movement of the cross-cutting upper blade 1. The servo motor 7 drives the cross-cutting sliding plate 3 and the cross-cutting upper blade 1 on the cross-cutting sliding plate 3 directly up and down through the eccentric shaft 4, connecting frame 5, and slider 10. In particular, the design of the two eccentric shafts 4 rotating in opposite directions makes the cross-cutting sliding plate 3 unaffected by lateral forces, and the punching gap between the upper and lower blades is uniform, eliminating the problem of gap slippage. Moreover, the entire upper blade holder 11 is not subjected to cutting force, avoiding the phenomenon of mold eccentricity, as well as the problems of longitudinal cutting burrs and incomplete cutting. The form of the servo motor 7 driving the eccentric shaft 4, the helical gear engagement between the eccentric shaft 4 and the linkage shaft 6, and the eccentric connection between the eccentric shaft 4 and the connecting frame 5 makes the power transmission more stable and reliable, with a low failure rate and easy maintenance.

[0058] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions 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. An improved structure for the transverse cutting mechanism of a fin mold, comprising an upper transverse cutting blade (1) and a lower transverse cutting blade (2), wherein the lower transverse cutting blade (2) is fixed below the fin travel path, and a transverse cutting sliding plate (3) capable of vertical movement is provided above the fin travel path, and the upper transverse cutting blade (1) is disposed on the transverse cutting sliding plate (3), characterized in that, An eccentric shaft (4) is arranged perpendicularly to the transverse sliding plate (3) above it. A connecting frame (5) that can translate along the transverse sliding plate (3) is provided on the top of the transverse sliding plate (3). The eccentric shaft (4) is driven to rotate by a drive assembly. The connecting frame (5) is sleeved on the eccentric shaft (4). The connecting frame (5) is used to convert the rotational motion of the eccentric shaft (4) into the up-and-down motion of the transverse sliding plate (3).

2. The improved structure of the fin mold cross-cutting mechanism according to claim 1, characterized in that, Two sets of eccentric shafts (4) and connecting frames (5) are provided respectively. The driving assembly includes a linkage shaft (6) that is connected to the two eccentric shafts (4) for transmission. The linkage shaft (6) and the two eccentric shafts (4) form a 90° axial angle. The two eccentric shafts (4) rotate in opposite directions to counteract the lateral force of the movement of the eccentric shafts (4).

3. The improved structure of the fin mold cross-cutting mechanism according to claim 2, characterized in that, The linkage shaft (6) and the eccentric shaft (4) are driven by a helical gear (8).

4. The improved structure of the fin mold cross-cutting mechanism according to claim 2, characterized in that, The linkage shaft (6) and the eccentric shaft (4) are driven by a spiral bevel gear.

5. The improved structure of the fin mold cross-cutting mechanism according to claim 2, characterized in that, The linkage shaft (6) and the eccentric shaft (4) are driven by a spur bevel gear.

6. The improved structure of the fin mold cross-cutting mechanism according to claim 2, characterized in that, The linkage shaft (6) and the eccentric shaft (4) are driven by a worm gear.

7. The improved structure of the fin mold cross-cutting mechanism according to claim 2, characterized in that, The drive assembly also includes a servo motor (7) connected to one of the eccentric shafts (4).

8. The improved structure of the fin mold cross-cutting mechanism according to claim 1, characterized in that, The top of the transverse sliding plate (3) is provided with a translation guide rail (9), and a slider (10) is provided on the translation guide rail (9). The bottom of the connecting frame (5) is fixedly connected to the slider (10).

9. The improved structure of the fin mold cross-cutting mechanism according to claim 1, characterized in that, It also includes an upper cutter holder (11) and a lower cutter holder (12). The cross-cutting lower cutter (2) is fixed on the lower cutter holder (12). The cross-cutting sliding plate (3) is attached to one side of the upper cutter holder (11). The upper cutter holder (11) is provided with a limiting rod (13) that passes through the cross-cutting sliding plate (3). The limiting rod (13) is provided with a baffle (14). The baffle (14) and the upper cutter holder (11) limit the two sides of the cross-cutting sliding plate (3). The cross-cutting sliding plate (3) is provided with a stroke groove that allows the limiting rod (13) to pass through.

10. The improved structure of the fin mold cross-cutting mechanism according to claim 9, characterized in that, The upper tool holder (11) is provided with a gearbox (15), and the eccentric shaft (4) is rotatably disposed in the gearbox (15). One end of the eccentric shaft (4) extends out of the gearbox (15) and is rotatably connected to the connecting frame (5).

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