A device for tearing resin on the surface of copper claws of commutator injection molding

Abstract

The utility model relates to a resin tearing device on the surface of copper claws of commutator injection molding products, comprising a pressure head assembly arranged on a telescopic rod of a cylinder or an electric cylinder, the pressure head assembly comprising a pressure head body, a positioning pin, a compression spring and a plugging piece, the outer wall of the lower end of the pressure head body is arranged in a conical contraction, the positioning pin is arranged longitudinally at the lower end of an inner cavity of the pressure head body, a circle of limiting rings is arranged on the outer wall of the upper end of the positioning pin, and a limiting seat for supporting and limiting the limiting ring of the positioning pin is arranged on the inner wall of the pressure head body, a compression spring and a plugging piece are arranged at the upper end of the inner cavity of the pressure head body, the plugging piece is connected to the pressure head body and presses the compression spring downward, so that the compression spring presses the positioning pin downward, and the lower end of the positioning pin is arranged in a contraction; an air flow channel is also arranged in the positioning pin, and the two ends of the air flow channel are respectively connected with the upper and lower ends of the inner cavity of the pressure head body, because the resin is attached to the surface of the copper claw, the surface of the copper claw will not be damaged when the pressure head is extruded and deformed, and the success rate of resin fracture is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of commutator processing equipment, and in particular relates to a device for tearing and shedding resin attached to the surface of copper claws of a commutator injection molded product. Background Art

[0002] At present, during the injection molding of the existing commutator, the resin is squeezed due to the gap between the injection mold and the copper claw assembly, causing the resin to adhere to the copper claw. Although the thickness of the resin attached to the copper claw is generally less than 0.2mm, the resin on the copper claw is connected to the commutator body, which increases the resin strength and cannot be effectively removed in the subsequent processing steps, which will affect the subsequent processing and the dimensional accuracy of the commutator. Therefore, it is necessary to remove the resin from the eight copper claws of the commutator injection molding. At present, there are few such devices on the market that can be used on automated equipment and can easily and quickly remove the resin attached to the copper claws. In order to effectively tear, root and fall off the resin on the copper claws, make the subsequent processing simple, and ensure the dimensional accuracy of the product processing, this set of devices is designed to remove the resin on the copper claws. Utility Model Content

[0003] In view of the above problems, the utility model discloses a device for tearing resin on the surface of copper claws of commutator injection molding, which solves the problem that the resin on the copper claws of the commutator cannot be effectively removed in the prior art.

[0004] The specific technical solutions are as follows:

[0005] A resin tearing device for the surface of copper claws of a commutator injection molded product, comprising a pressure head assembly arranged on a telescopic rod of a cylinder or an electric cylinder, the pressure head assembly comprising a pressure head body, a positioning pin, a compression spring and a plugging piece, the outer wall of the lower end of the pressure head body is set in a conical contraction, the pressure head body is a hollow structure, the positioning pin is longitudinally arranged at the lower end of the inner cavity of the pressure head body, a circle of limiting rings is arranged on the outer wall of the upper end of the positioning pin, and a limiting seat for supporting and limiting the limiting ring of the positioning pin is arranged on the inner wall of the pressure head body, the compression spring and the plugging piece are arranged at the upper end of the inner cavity of the pressure head body, the plugging piece is connected to the pressure head body and presses the compression spring downward, so that the compression spring presses the positioning pin downward, and the lower end of the positioning pin is set in a contraction; the positioning pin is also provided with an air flow channel, and the two ends of the air flow channel are respectively connected with the upper and lower ends of the inner cavity of the pressure head body.

[0006] Furthermore, the airflow channel includes a vertical section and a horizontal section. The upper end of the vertical section passes through the top of the positioning pin and is connected to the upper end of the inner cavity of the pressure head body. The lower end of the vertical section extends to below the limiting ring and is connected to the horizontal section. The two ends of the horizontal section respectively pass through the two sides of the positioning pin and are connected to the lower end of the inner cavity of the pressure head body.

[0007] Furthermore, the side wall of the upper end of the positioning pin is fitted with the inner wall of the limiting ring, and the lower end of the positioning pin is in a bullet-shaped structure.

[0008] Furthermore, the bottom end of the positioning pin protrudes from the bottom end of the pressure head body.

[0009] Furthermore, a circle of positioning ring is provided on the outer wall of the pressure head body.

[0010] Furthermore, an air inlet notch is provided on the outer wall of the top end of the pressure head body.

[0011] Furthermore, a hexagonal hole is provided at the center of the plugging piece, and the outer wall of the plugging piece is threadedly connected to the inner wall of the upper end of the pressure head body.

[0012] The beneficial effects of the utility model are embodied in:

[0013] (1) The utility model has stable operation and high production efficiency. Since the device uses electrically controllable equipment to perform shaping processing, the equipment operation is simple, fast and efficient. Since the resin is attached to the surface of the copper claw, the surface of the copper claw will not be damaged when the pressure head is squeezed and deformed, and the success rate of resin fracture is high.

[0014] (2) The utility model has a simple structure and is easy to maintain. Since the installation structure of the utility model is simple, it can be widely used in automated processing equipment, is easy to install, and can basically achieve rapid replacement of parts and components, with a short maintenance cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model.

[0016] Figure 2 It is an exploded view of the utility model.

[0017] Figure 3 It is a schematic diagram of the internal structure of the utility model.

[0018] Figure 4 It is a schematic diagram of air flow in the utility model.

[0019] Figure 5 It is a schematic diagram of the structure of the commutator copper claws after being stretched out in the utility model.

[0020] Figure 6 for Figure 5 Enlarged schematic diagram at point A in the middle.

[0021] Plug 1, compression spring 2, positioning pin 3, air flow channel 31, vertical section 311, horizontal section 312, pressure head body 4, limit ring 41, positioning ring 42, air inlet notch 43, commutator 5, copper claw 6, resin tearing opening 61. DETAILED DESCRIPTION

[0022] In order to make the technical solution of the utility model clearer, the utility model is further described below in conjunction with the accompanying drawings. Any equivalent replacement of the technical features of the technical solution of the utility model and any solution derived from conventional reasoning shall fall within the protection scope of the utility model. The fixed connection and fixed setting mentioned in the utility model are all common connection methods in the mechanical field, including welding, bolt and nut connection, and screw connection.

[0023] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating directions or positional relationships, are based on the directions 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 direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0024] like Figure 1-4 As shown, this example provides a resin tearing device on the surface of the copper claw of the commutator injection molding product. The pressure head is driven by a cylinder or an electric cylinder to extrude and deform the vertical copper claw of the commutator 5. Since the resin on the copper claw is hard and brittle, the pressure head drives the copper claw and the resin to be squeezed and deformed, resulting in the connection between the resin attached to the copper claw and the commutator 5 body being stretched, torn, and disconnected, so that the resin on the copper claw is no longer connected to the body, becoming a separate individual, so as to facilitate air blowing cleaning.

[0025] The tearing device includes a pressure head assembly arranged on the telescopic rod of the cylinder or electric cylinder, the pressure head assembly includes a pressure head body 4, a positioning pin 3, a compression spring 2 and a plug 1, a circle of positioning rings 42 for cooperating with the telescopic rod of the cylinder or electric cylinder are arranged on the outer wall of the pressure head body 4, and the outer wall of the lower end of the pressure head body 4 is set in a conical surface contraction and the copper claw 6 of the commutator 5 is opened toward the outside, so that the resin on the copper claw is broken from the resin on the commutator 5 and a resin tearing opening 61 is formed. Figure 5-6As shown; the pressure head body 4 is a hollow structure, the positioning pin 3 is longitudinally arranged at the lower end of the inner cavity of the pressure head body 4, a circle of limiting ring 41 is arranged on the outer wall of the upper end of the positioning pin 3, and a limiting seat for supporting and limiting the limiting ring 41 of the positioning pin 3 is arranged on the inner wall of the pressure head body 4, the compression spring 2 and the plug 1 are arranged at the upper end of the inner cavity of the pressure head body 4, the center of the plug 1 is provided with a hexagonal hole, the outer wall of the plug 1 is threadedly connected with the inner wall of the upper end of the pressure head body 4 for fixing, and the bottom end of the plug 1 presses the compression spring 2 downward, so that the compression spring 2 presses on the positioning pin 3 and applies a downward force; the side wall of the upper end of the positioning pin 3 is fitted with the inner wall of the limiting ring 41, and the positioning The lower end of the positioning pin 3 is a bullet-shaped contraction structure, and the bottom end of the positioning pin 3 protrudes from the bottom end of the ram body 4, so that the positioning pin 3 can be embedded in the center hole of the commutator 5 for positioning; an air flow channel 31 is also provided in the positioning pin 3, and the two ends of the air flow channel 31 are respectively connected to the upper and lower ends of the inner cavity of the ram body 4, and an air intake notch 43 is provided on the outer wall of the top end of the ram body 4, so that after the ram body 4 is sleeved and installed with the bottom end of the telescopic rod of the cylinder or electric cylinder, the air flow enters through the pipeline on the side wall of the telescopic rod and flows into the inner cavity of the telescopic rod through the air intake notch 43, and then enters the inner cavity of the ram body 4 from top to bottom, and finally flows downward from the air flow channel 31 through the positioning pin 3.

[0026] In this embodiment, the air flow channel 31 includes a vertical section 311 and a horizontal section 312. The upper end of the vertical section 311 passes through the top of the positioning pin 3 and is connected to the upper end of the inner cavity of the pressure head body 4. The lower end of the vertical section 311 extends to the bottom of the limiting ring 41 and is connected to the horizontal section 312. The two ends of the horizontal section 312 respectively pass through the two sides of the positioning pin 3 and are connected to the lower end of the inner cavity of the pressure head body 4, so that the air flow is swept to the lower sides through the inner cavity of the pressure head body 4, thereby cleaning the broken rubber on the copper claw.

[0027] Working principle: install the pressure head assembly on the telescopic rod of the cylinder or electric cylinder. When the telescopic rod of the cylinder or electric cylinder drives the pressure head assembly to move downward, the locating pin 3 in the pressure head assembly is inserted into the center hole of the commutator 5 injection molding. Since the lower end of the locating pin 3 is in the shape of a bullet head, the center of the commutator 5 injection molding will be automatically located. As the pressure head continues to descend, the locating pin 3 rises, causing the rectangular compression spring 2 to shrink and deform. Due to the pressure head action of the spring, the locating pin 3 will always press the commutator 5 injection molding to prevent it from displacement. When the pressure head continues to descend, since the lower end of the pressure head body 4 is in the shape of a cone head, the copper claw and the attached resin will be stretched from the inside to the outside. Due to the increasing deformation angle, the root of the resin will be torn by force, and the root of the resin will break and cannot be strongly connected to the commutator 5 body. When the pressure head leaves the copper claw, it is blown and cleaned, so that the resin falls directly off the surface of the copper claw.

[0028] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a technician familiar with the technical field within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A resin tearing device for the copper claw surface of a commutator injection molded product, characterized in that: The invention comprises a pressure head assembly arranged on a telescopic rod of a pneumatic cylinder or an electric cylinder, the pressure head assembly comprising a pressure head body (4), a positioning pin (3), a compression spring (2) and a plug (1), the outer wall of the lower end of the pressure head body (4) is arranged in a conical contraction, the pressure head body (4) is a hollow structure, the positioning pin (3) is arranged longitudinally at the lower end of the inner cavity of the pressure head body (4), a circle of limiting ring (41) is arranged on the outer wall of the upper end of the positioning pin (3), and a spring (41) is arranged on the inner wall of the pressure head body (4) for aligning the positioning pin (3). The limiting ring (41) supports the limiting seat, and the compression spring (2) and the plug (1) are arranged at the upper end of the inner cavity of the pressure head body (4). The plug (1) is connected to the pressure head body (4) and presses the compression spring (2) downward, so that the compression spring (2) presses the positioning pin (3) downward, and the lower end of the positioning pin (3) is retracted. The positioning pin (3) is also provided with an air flow channel (31), and the two ends of the air flow channel (31) are respectively connected to the upper and lower ends of the inner cavity of the pressure head body (4).

2. A resin tearing device for the copper claw surface of a commutator injection molded product as claimed in claim 1, characterized in that: The air flow channel (31) comprises a vertical section (311) and a horizontal section (312); the upper end of the vertical section (311) passes through the top of the positioning pin (3) and is connected to the upper end of the inner cavity of the pressure head body (4); the lower end of the vertical section (311) extends to below the limiting ring (41) and is connected to the horizontal section (312); the two ends of the horizontal section (312) respectively pass through the two sides of the positioning pin (3) and are connected to the lower end of the inner cavity of the pressure head body (4).

3. A resin tearing device for the copper claw surface of a commutator injection molded product as claimed in claim 1, characterized in that: The side wall of the upper end of the positioning pin (3) is arranged in close contact with the inner wall of the limiting ring (41), and the lower end of the positioning pin (3) is in a bullet-shaped structure.

4. A resin tearing device for the copper claw surface of a commutator injection molded product as claimed in claim 3, characterized in that: The bottom end of the positioning pin (3) protrudes from the bottom end of the pressure head body (4).

5. A resin tearing device for the copper claw surface of a commutator injection molded product as claimed in claim 1, characterized in that: A circle of positioning ring (42) is provided on the outer wall of the pressure head body (4).

6. A resin tearing device for the copper claw surface of a commutator injection molded product as claimed in claim 1, characterized in that: An air inlet notch (43) is provided on the outer wall of the top end of the pressure head body (4).

7. A resin tearing device for the copper claw surface of a commutator injection molded product as claimed in claim 1, characterized in that: The plugging piece (1) is provided with a hexagonal hole at its center, and the outer wall of the plugging piece (1) is threadedly connected to the inner wall of the upper end of the pressure head body (4).

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