Fin die transverse cutting mechanism

Abstract

The utility model discloses a transverse cutting mechanism for a fin die. The transverse cutting mechanism comprises a transverse cutting tool apron, a lower transverse cutting tool fixedly arranged on the transverse cutting tool apron and an upper transverse cutting tool matched with the lower transverse cutting tool to cut off fins. A rotating shaft is arranged above the transverse cutting upper knife, a group of striking blocks are eccentrically arranged on the rotating shaft, the transverse cutting upper knife is connected with a group of striking rods matched with the striking blocks, an ejection spring is arranged between the transverse cutting upper knife and the transverse cutting knife holder, and the transverse cutting upper knife is arranged on the transverse cutting knife holder in a floating manner under the action of the ejection spring; when the striking block does not make contact with the striking rod, a gap allowing the fins to pass through is formed between the upper transverse cutting knife and the lower transverse cutting knife. The beating block is driven by the rotating shaft to rotate, the beating rod is intermittently beaten, and cutting is achieved. According to the structure, the rotating shaft is separated from the transverse cutting upper cutter, the lateral force of the rotating shaft on the transverse cutting upper cutter can be reduced, the problems that the transverse cutting upper cutter deviates from the transverse cutting lower cutter under the action of the lateral force, cutter gnawing is caused, fin section burrs exist or cutting is not broken are solved, and the fin transverse cutter can be widely applied to the fin transverse cutting field.

Description

Technical Field

[0001] The utility model relates to the field of fin processing molds, in particular to a transverse cutting mechanism for a fin mold. Background Art

[0002] During the fin processing, a continuous strip-shaped sheet needs to be cut into required lengths by a transverse cutting mechanism. Currently, all transverse cutting mechanisms adopt a structure where a rotating cam is connected to an upper knife sliding plate, and a connecting rod is arranged between the rotating cam and the upper knife sliding plate. The rotation of the rotating cam drives the upper knife sliding plate below to move up and down. For example, the Chinese patent application number is 202310760196.3, and the patent name is: A Transverse Cutting Mechanism for a Fin Mold; another example is the Chinese patent application number 202223392982.2, and the patent name is: The Transverse Cutting Mechanism of an Automatic Air Conditioner Fin Mold; and there is also the Chinese patent application number 202120130498.9, and the patent name is: A Transverse Cutting Structure of a High-Speed Fin Mold. All of them have similar structures. During the operation of this structure, when the connecting rod drives the upper knife sliding plate to move up and down, a certain lateral force will be generated. Under the action of the lateral force, the upper knife sliding plate will cause the transverse cutting upper knife to shift relative to the transverse cutting lower knife, resulting in problems such as knife gnawing, burrs on the fin cutting surface, or inability to cut through during transverse cutting. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a transverse cutting mechanism for a fin mold, which solves the problem that the existing crank connection mechanism will generate lateral force when driving the upper knife seat to move downward, easily causing changes in the clearance between the upper and lower knives, thus leading to problems such as knife gnawing, burrs on the fin cutting surface, or inability to cut through.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a transverse cutting mechanism for a fin mold, including a transverse cutting knife seat, a transverse cutting lower knife fixedly arranged on the transverse cutting knife seat, and a transverse cutting upper knife that cooperates with the transverse cutting lower knife to complete the cutting of the fin; above the transverse cutting upper knife, a rotating shaft is arranged, and a set of striking blocks is eccentrically arranged on the rotating shaft. The transverse cutting upper knife is connected with a set of striking rods that cooperate with the striking blocks. A top spring is arranged between the transverse cutting upper knife and the transverse cutting knife seat, and under the action of the top spring, the transverse cutting upper knife is floatingly arranged on the transverse cutting knife seat; when the striking blocks and the striking rods are not in contact, there is a gap for the fin to pass between the transverse cutting upper knife and the transverse cutting lower knife.

[0005] To reduce the lateral force, a rotating bearing that cooperates with the striking blocks is arranged at the top of the striking rod, and the rotating bearing is rotatably installed on the striking rod.

[0006] To ensure the consistency of the movement of the transverse cutting upper knife, the transverse cutting upper knife is fixedly installed on an upper knife sliding plate, and a top spring is arranged between the upper knife sliding plate and the transverse cutting knife seat.

[0007] The specific installation structure of the rotating shaft is as follows: A group of support seats are arranged at intervals on the cross-cutting tool holder, and the rotating shaft is rotatably installed on the support seats; One end of the rotating shaft is connected with a driving source for driving the rotating shaft to rotate.

[0008] To facilitate the control of the up and down stroke of the cross-cutting upper knife, a group of waist-shaped holes in the same direction as the movement direction of the upper knife sliding plate are arranged on the upper knife sliding plate, and a group of limit bolts matching the waist-shaped holes are fixedly arranged on the cross-cutting tool holder.

[0009] The beneficial effects of the present utility model: By hitting the hitting rod with the hitting block, the cross-cutting upper knife is driven to move downward to cooperate with the cross-cutting lower knife to complete the cross-cutting of the fins. This structure separates the rotating shaft from the cross-cutting upper knife, which can reduce the lateral force of the rotating shaft rotation on the cross-cutting upper knife, thereby avoiding the problem that the cross-cutting upper knife deflects laterally relative to the cross-cutting lower knife under the long-term action of the lateral force, resulting in knife biting, burrs on the fin cut surface or inability to cut through during cross-cutting.

[0010] Hereinafter, the present utility model will be described in more detail with reference to the drawings and embodiments. Description of the Drawings

[0011] Figure 1 It is the front view of the present utility model.

[0012] Figure 2 It is the side view of the present utility model.

[0013] Figure 3 It is the cross-sectional view of the present utility model. Detailed Embodiment

[0014] Embodiment, as Figures 1 to 3 shown, a cross-cutting mechanism for a fin mold includes a cross-cutting tool holder 1 fixedly arranged on the lower template of the mold, a cross-cutting lower knife 2 fixedly arranged on the cross-cutting tool holder 1, and a cross-cutting upper knife 3 that cooperates with the cross-cutting lower knife 2 to complete the cutting of the fins.

[0015] The specific installation and connection structure of the cross-cutting upper knife 1 is as follows: The cross-cutting upper knife 3 is fixedly arranged on the upper knife sliding plate 9. A group of waist-shaped holes 91 in the same direction as the movement direction of the upper knife sliding plate 9 are arranged on the upper knife sliding plate 9, and a group of limit bolts 101 matching the waist-shaped holes 91 are fixedly arranged on the cross-cutting tool holder 1, thereby restricting the stroke of the cross-cutting upper knife 3. A spring pad 12 is fixedly arranged on the cross-cutting tool holder 1, and a group of ejecting springs 7 are arranged between the spring pad 12 and the upper knife sliding plate 9. Under the action of the ejecting springs 7, the upper knife sliding plate 9 is floatingly arranged on the cross-cutting tool holder 1. Without external force, there is a gap for the fins to pass between the cross-cutting upper knife 3 and the cross-cutting lower knife 2.

[0016] To drive the upper knife sliding plate 9 to move downward and achieve the cross-cutting of the fins, a group of support seats 10 are arranged at intervals on the cross-cutting tool holder 1. A rotating shaft 4 is arranged on the support seat 10. One end of the rotating shaft 4 is connected with a driving source 11 that drives the rotating shaft 4 to rotate. The driving source 11 preferably adopts a servo motor. A first synchronous pulley 13 is arranged at the output end of the servo motor. A second synchronous pulley 14 is arranged at the end of the rotating shaft 4. The first synchronous pulley 13 and the second synchronous pulley 14 are connected by a synchronous belt (not shown in the figure). A group of striking blocks 5 are eccentrically arranged on the rotating shaft 4. The striking blocks 5 are of an eccentric wheel structure. A group of striking rods 6 that cooperate with the striking blocks 5 are connected to the cross-cutting upper knife 3. The rotating shaft 4 drives the striking blocks 5 to rotate. The striking blocks 5 strike the striking rods 6, causing the upper knife sliding plate 9 to move downward against the acting force of the ejecting spring 7. The cross-cutting upper knife 3 and the cross-cutting lower knife 2 cooperate to complete the cross-cutting. After the cross-cutting is completed, the upper knife sliding plate 9 moves upward under the action of the ejecting spring 7 and returns to the initial position.

[0017] To reduce wear, a rotating bearing 8 that cooperates with the striking block 5 is arranged at the top of the striking rod 6. The rotating bearing 8 is rotatably installed on the striking rod 6 through a bearing connection pin 15. When the striking block 5 strikes and acts on the rotating bearing 8, while giving the rotating bearing 8 a downward pressure, it drives the rotating bearing 8 to rotate, thereby reducing the lateral force.

[0018] The above has made an exemplary description of the present invention in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited by the above methods. As long as various non-substantive improvements are made by adopting the method concept and technical solution of the present invention; or without improvement, the above concept and technical solution of the present invention are directly applied to other occasions, they are all within the protection scope of the present invention.

Claims

1. A fin die cross-cutting mechanism, comprising a cross-cutting knife seat (1), a cross-cutting lower knife (2) fixedly arranged on the cross-cutting knife seat (1), and a cross-cutting upper knife (3) cooperating with the cross-cutting lower knife (2) to complete the cutting of the fin; characterized in that: A rotating shaft (4) is arranged above the cross-cutting upper knife (3), a group of striking blocks (5) are eccentrically arranged on the rotating shaft (4), a group of striking rods (6) cooperating with the striking blocks (5) are connected to the cross-cutting upper knife (3), an ejection spring (7) is arranged between the cross-cutting upper knife (3) and the cross-cutting knife seat (1), and under the action of the ejection spring (7), the cross-cutting upper knife (3) is floated on the cross-cutting knife seat (1); when the striking block (5) is not in contact with the striking rod (6), there is a gap between the cross-cutting upper knife (3) and the cross-cutting lower knife (2) for the fin to pass through.

2. The fin die cross-cutting mechanism according to claim 1, characterized in that: A rotating bearing (8) matched with the striking block (5) is arranged at the top of the striking rod (6), and the rotating bearing (8) is rotatably mounted on the striking rod (6).

3. The fin die cross-cutting mechanism according to claim 1, characterized in that: The cross-cutting upper knife (3) is fixedly mounted on an upper knife sliding plate (9), and an ejection spring (7) is arranged between the upper knife sliding plate (9) and the cross-cutting knife seat (1).

4. The fin die cross-cutting mechanism according to claim 1, characterized in that: A group of support seats (10) are arranged at intervals on the cross-cutting knife seat (1), and the rotating shaft (4) is rotatably mounted on the support seats (10); one end of the rotating shaft (4) is connected to a driving source (11) for driving the rotating shaft (4) to rotate.

5. The fin die cross-cutting mechanism according to claim 3, characterized in that: The upper knife sliding plate (9) is provided with a group of waist-shaped holes (91) with the same movement direction as the upper knife sliding plate (9), and the cross-cutting knife seat (1) is fixedly provided with a group of limiting bolts (101) matched with the waist-shaped holes (91).

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