Shearing mechanism

By using the combination of elastic parts and moving components in the shear mechanism, the precise control of the scissor blades during the shearing and retraction process is solved, and the problem of shear retraction drag affects the flatness of the shear surface is ensured, ensuring the profile Product quality and reduce production costs.

CN222133637UActive Publication Date: 2024-12-10FOSHAN NANHAI XINCONKE EXTRUSION MACHINE CO LTD
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Patent Information

Application Number
CN202420873504.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-24
Publication Date
2024-12-10
Estimated Expiration
2034-04-24

AI Technical Summary

Technical Problem

The existing shear mechanism is easily dragged to the shear surface of the bar when the shear knife is withdrawn, affecting the flatness of the shear surface and causing defects in the profile product near the interface.

Method used

A shearing mechanism including a scissor rod, scissor blade and a moving component is designed to provide elastic force of the scissor blade away from the shear surface through the elastic member. The moving component drives the scissor blade to move close to the shear surface for shearing action, when it no longer works. When the scissor blade is away from the elastic member, the scissor rod can be retracted to avoid dragging to the shear surface.

Benefits of technology

Ensure that the flatness of the shearing surface of the bar does not affect the smoothness of the bar when the shearing knife is withdrawn, avoid defects in the profile product near the interface, and the structure is relatively simple and the production cost is low.

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Abstract

The utility model discloses a shearing mechanism which comprises a scissor rod, a scissor blade and a moving assembly, and one side of the scissor rod is provided with a shearing face. The scissor blades are slidably arranged on the scissor rods in the direction perpendicular to the shearing faces, and elastic pieces are arranged between the scissor blades and the scissor rods and used for providing elastic force for the scissor blades to be away from the shearing faces. The moving assembly is used for driving the shear blades to approach the shearing face. The moving assembly drives the shear blade to get close to the shearing face, at the moment, the shear blade is located at the shearing position and can conduct shearing action, the moving assembly does not act on the shear blade, under the action of the elastic piece, the shear blade is away from the shearing face, at the moment, the shear blade is not located at the shearing position, and the shear rod can conduct retreating action. And after the scissor rod retreats to the upper side, the moving assembly drives the scissor blade to approach the shearing surface, and the next shearing action is circularly performed.
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Description

Technical Field

[0001] The utility model relates to the technical field of extruder equipment, in particular to a shearing mechanism. Background Art

[0002] After the bar extruder extrude the bar, the shear mechanism is needed to shear the residual bar after extrusion. The residual and waste parts of the ingot that have not become the finished product during the extrusion production are called residual and head respectively. The current shearing is mainly driven by the shear cylinder to drive the shear knife close to the extrusion die entrance of the extruder to shear the residual bar after extrusion. Since the shear knife is fixed on the shear cylinder, when the shear knife of the shear mechanism retreats (returns the knife), it usually drags the shear surface of the bar, thereby affecting the flatness of the shear surface of the bar. When docking with the next bar, air pockets and gas will be generated, which will eventually lead to defects in the profile product near the interface. Utility Model Content

[0003] The utility model aims to provide a shearing mechanism to solve one or more technical problems existing in the prior art and at least provide a beneficial choice or create conditions.

[0004] The technical solutions adopted to solve the above technical problems are:

[0005] The utility model provides a shearing mechanism, comprising a scissor rod, a scissor blade and a moving assembly, wherein one side of the scissor rod is provided with a shearing surface; the scissor blade is slidably arranged on the scissor rod along a direction perpendicular to the shearing surface, an elastic member is arranged between the scissor blade and the scissor rod, and the elastic member is used to provide an elastic force for the scissor blade to be away from the shearing surface; and the moving assembly is used to drive the scissor blade to approach the shearing surface.

[0006] The beneficial effects of the utility model are:

[0007] The moving component brings the scissor blades close to the shearing surface. At this time, the scissor blades are in the shearing position and can perform shearing. The moving component no longer acts on the scissor blades. Then, under the action of the elastic member, the scissor blades move away from the shearing surface. At this time, the scissor blades are not in the shearing position, and the scissor rod can retract. When the scissor rod retracts to the top, the moving component brings the scissor blades close to the shearing surface again, and the next shearing action is performed in a cycle. When the shearing knife of the shearing mechanism retracts (returns), it will not drag the shearing surface of the rod, and will not affect the flatness of the shearing surface of the rod. There will be no defects in the profile product near the interface, and the structure of the application is relatively simple.

[0008] As a further improvement of the above technical solution, the moving assembly includes a pancake beating rod and a driving unit for driving the pancake beating rod to move, the scissor blades are provided with a connecting rod, the shearing surface of the scissor rod is provided with a block for blocking the scissor blades, the connecting rod is movably installed on the scissor rod, the elastic member is provided between the scissor rod and the connecting rod, the pancake beating rod is provided between the scissor blades and the scissor rod, and a guide portion is provided between the pancake beating rod and the scissor blades for moving the scissor blades toward the shearing surface.

[0009] As a further improvement of the above technical solution, the guide portion includes inclined surfaces which are respectively provided on the pancake-beating rod and the scissor blade and cooperate with each other.

[0010] As a further improvement of the above technical solution, the scissor rod is provided with an installation channel, and the pancake-beating rod is movably installed in the installation channel.

[0011] As a further improvement of the above technical solution, the driving unit and the pancake-beating rod are both arranged inside the scissor rod.

[0012] As a further improvement of the above technical solution, the elastic member includes a spring sleeved on the connecting rod.

[0013] As a further improvement of the above technical solution, the scissor rod is provided with a mounting hole, the connecting rod includes a connecting screw, and the spring is sleeved on the connecting screw.

[0014] As a further improvement of the above technical solution, the scissor rod is provided with a guide groove, and the scissor blade is provided with a guide block slidably arranged in the guide groove.

[0015] As a further improvement of the above technical solution, there are multiple connecting rods, and the pancake-making rod passes through the connecting rods.

[0016] As a further improvement of the above technical solution, the stopper is provided with a first abutting step, and the scissor blade is provided with a second abutting platform arranged corresponding to the first abutting step. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0018] Figure 1 This is a cross-sectional schematic diagram of a shearing mechanism provided by the utility model, in which four arrows represent left, right, upward and downward directions respectively;

[0019] Figure 2 This is a cross-sectional schematic diagram of a shearing mechanism provided by the utility model, in which four arrows represent left, right, upward and downward directions respectively;

[0020] Figure 3The utility model provides a shearing mechanism, and a cross-sectional schematic diagram of an embodiment thereof, wherein four arrows represent forward, backward, upward and downward directions respectively. DETAILED DESCRIPTION

[0021] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0022] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0023] In the description of the present utility model, if there are words such as "several", it means one or more, "more" means more than two, greater than, less than, exceed, etc. are understood to exclude the number, and above, below, within, etc. are understood to include the number.

[0024] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0025] After the bar extruder extrude the bar, the shear mechanism is needed to shear the residual bar after extrusion. The residual and waste parts of the ingot that have not become the finished product during the extrusion production are called residual and head respectively. The current shearing is mainly driven by the shear cylinder to drive the shear knife close to the extrusion die entrance of the extruder to shear the residual bar after extrusion. Since the shear knife is fixed on the shear cylinder, when the shear knife of the shear mechanism retreats (returns the knife), it usually drags the shear surface of the bar, thereby affecting the flatness of the shear surface of the bar. When docking with the next bar, air pockets and gas will be generated, which will eventually lead to defects in the profile product near the interface.

[0026] Therefore, refer to Figures 1 to 3 The utility model provides a shearing mechanism and makes the following embodiments:

[0027] In some embodiments, a shearing mechanism includes a scissor bar 100, a scissor blade 200, and a moving assembly.

[0028] The right side of the scissor rod 100 has a shearing surface, that is, the mold to be sheared is on the right side of the scissor rod 100; the scissor blade 200 is slidable left and right on the scissor rod 100, and an elastic member 300 is arranged between the scissor blade 200 and the scissor rod 100, and the elastic member 300 is used to provide an elastic force for the scissor blade 200 to move away from the shearing surface; the moving component is used to drive the scissor blade 200 to approach the shearing surface, that is, move to the right, so that the scissor blade 200 is located in the shearing position, and when there is no force from the moving component, the scissor blade 200 moves away from the shearing surface under the action of the elastic member 300, that is, moves to the left.

[0029] The moving component with the scissor blade 200 approaches the shearing surface. At this time, the scissor blade 200 is in the shearing position and can perform a shearing action. The moving component no longer acts on the scissor blade 200. Then, under the action of the elastic member 300, the scissor blade 200 moves away from the shearing surface. At this time, the scissor blade 200 is not in the shearing position, and the scissor rod 100 can perform a retracting action.

[0030] When the scissor rod 100 is retracted to the upper side, the moving assembly brings the scissor blade 200 close to the shearing surface and performs the next shearing action in a cycle. When the shearing knife of the shearing mechanism retracts (returns), it will not drag the shearing surface of the bar material, and will not affect the flatness of the shearing surface of the bar material. The profile product will not have defects near the interface, and the structure of the application is relatively simple, and the production cost is low.

[0031] More specifically, the moving assembly includes a pancake-beating rod 400 and a driving unit 500 for driving the pancake-beating rod 400 to move. The driving unit 500 specifically adopts a residual pressure cylinder. In some other embodiments, it can be a linear driving element such as a cylinder or an electric push rod. The scissor lever 100 is provided with an installation channel 110, and the pancake-beating rod 400 is movably installed in the installation channel 110. The residual pressure cylinder is arranged on the upper part of the scissor lever 100 to protect the residual pressure cylinder and the pancake-beating rod 400, and the structure is more compact.

[0032] The right side of the scissor blade 200 is connected to four connecting rods, which are extended left and right. The right side of the scissor rod 100 is provided with a block 600 for blocking the scissor blade 200, and the block 600 is provided with a first abutment step 610. The scissor blade 200 is provided with a second abutment platform, and the second abutment platform is arranged corresponding to the first abutment step 610. The left side of the scissor rod 100 is provided with four mounting slots, and the interior of the mounting slots is provided with abutment steps. The connecting rods are movably installed in the mounting slots.

[0033] The elastic member 300 adopts a butterfly spring and the connecting rod adopts a connecting screw 800. The butterfly spring is arranged on the connecting screw 800. The butterfly spring is respectively abutted against the nut and the abutment step of the connecting screw 800. The beating rod 400 is arranged between the scissor blade 200 and the scissor rod 100. A guide portion is provided between the beating rod 400 and the scissor blade 200 to enable the scissor blade 200 to move toward the shearing surface. The guide portion includes an inclined surface 700 which is respectively provided on the beating rod 400 and the scissor blade 200 and cooperates with each other.

[0034] Reference Figure 2 The scissor bar 100 is provided with a guide groove 120, and the scissor blade 200 is provided with a guide block 210 slidably arranged in the guide groove 120. The sliding direction of the scissor blade 200 is limited, so that the movement of the scissor blade 200 is more stable.

[0035] Reference Figure 1 That is, a slope 700 is processed on the scissor blade 200, and a slope 700 is also processed on the pancake-beating rod 400. The pancake-beating rod 400 is narrower in the middle and wider at the lower end, that is, the slope is inclined at about 700, and the lower side of the slope 700 is located on the right side of the upper side of the slope. When the residual pressure cylinder is recovered upward, the pancake-beating rod 400 and the scissor blade 200 cooperate with each other through the slope 700, forcing the scissor blade 200 to move closer to the mold plane. When the scissor blade 200 is completely close to the stopper 600, the scissor blade 200 reaches the shearing position and can perform the shearing action;

[0036] After the scissor blade 200 has completed shearing, the residual pressure oil cylinder pushes the pancake beating rod 400 to clean the residual pressure, and the pancake beating rod 400 falls down. During this process, the pressure cooperation between the scissor blade 200 and the two inclined surfaces 700 of the pancake beating rod 400 will slowly separate. After the scissor blade 200 loses the pressure of the pancake beating rod 400, the butterfly spring rebounds and drives the scissor blade 200 to move in a direction away from the mold plane through the screw. At this time, the scissor blade 200 has moved away from the mold. After the scissor rod 100 retreats, the scissor blade 200 will no longer contact the mold surface.

[0037] When the scissor rod 100 has retreated over the top of the mold, the residual oil cylinder is retracted again, driving the pancake-beating rod 400 to reset upward, thereby forcing the scissor blade 200 to translate and reset toward the plane of the mold, and the next shearing action is performed in a cycle.

[0038] In some other embodiments, the lower end of the pancake-beating rod 400 is narrower than the middle part, that is, the inclined surface is inclined left and right, and the lower side of the inclined surface 700 is located on the left side of the upper side of the inclined surface 700. At this time, the inclined surface 700 of the scissor blade 200 changes accordingly. When the residual pressure cylinder falls downward, the pancake-beating rod 400 and the scissor blade 200 cooperate with each other through the inclined surface 700, forcing the scissor blade 200 to move closer to the mold plane. When the scissor blade 200 is completely close to the stopper 600, the scissor blade 200 reaches the shearing position and can perform the shearing action;

[0039] After the scissor blade 200 has completed shearing, the residual pressure cylinder pushes the pancake beating rod 400 to clean the residual pressure, and the pancake beating rod 400 is retracted upward. During this process, the pressure cooperation between the scissor blade 200 and the two inclined surfaces 700 of the pancake beating rod 400 will slowly separate. After the scissor blade 200 loses the pressure of the pancake beating rod 400, the butterfly spring rebounds and drives the scissor blade 200 to move in a direction away from the mold plane through the screw. At this time, the scissor blade 200 has moved away from the mold. After the scissor rod 100 retreats, the scissor blade 200 will no longer contact the residual mold surface.

[0040] When the scissor rod 100 has retreated over the top of the mold, the residual oil cylinder is retracted again, driving the pancake-beating rod 400 to reset upward, thereby forcing the scissor blade 200 to translate and reset toward the plane of the mold, and the next shearing action is performed in a cycle.

[0041] The preferred implementation modes of the present invention are specifically described above, but the invention is not limited to the embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention, and these equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A shearing mechanism, characterized in that: include: A scissor bar having a shearing surface on one side; A scissor blade, which is slidably arranged on the scissor rod in a direction perpendicular to the shearing surface, an elastic member is arranged between the scissor blade and the scissor rod, and the elastic member is used to provide an elastic force for the scissor blade to move away from the shearing surface; A moving assembly is used to drive the scissor blades to approach the shearing surface.

2. A shearing mechanism according to claim 1, characterized in that: The moving assembly includes a pancake beating rod and a driving unit for driving the pancake beating rod to move, the scissor blades are provided with a connecting rod, the shearing surface of the scissor rod is provided with a block for blocking the scissor blades, the connecting rod is movably mounted on the scissor rod, the elastic member is provided between the scissor rod and the connecting rod, the pancake beating rod is provided between the scissor blades and the scissor rod, and a guide portion is provided between the pancake beating rod and the scissor blades for moving the scissor blades toward the shearing surface.

3. A shearing mechanism according to claim 2, characterized in that: The guide portion includes inclined surfaces which are respectively arranged on the pancake beating rod and the scissor blade and cooperate with each other.

4. A shearing mechanism according to claim 3, characterized in that: The scissor rod is provided with an installation channel, and the pancake-beating rod is movably installed in the installation channel.

5. A shearing mechanism according to claim 4, characterized in that: The driving unit and the pancake-beating rod are both arranged inside the scissor rod.

6. A shearing mechanism according to claim 2, characterized in that: The elastic member comprises a spring sleeved on the connecting rod.

7. A shearing mechanism according to claim 6, characterized in that: The scissor rod is provided with a mounting hole, the connecting rod comprises a connecting screw, and the spring is sleeved on the connecting screw.

8. A shearing mechanism according to claim 2, characterized in that: The scissor rod is provided with a guide groove, and the scissor blade is provided with a guide block slidably arranged in the guide groove.

9. A shearing mechanism according to claim 2, characterized in that: There are multiple connecting rods, and the pancake-making rod passes through the connecting rods.

10. A shearing mechanism according to claim 2, characterized in that: The stopper is provided with a first abutting step, and the scissor blade is provided with a second abutting platform arranged corresponding to the first abutting step.