A cutting device for power cord production

Abstract

This utility model discloses a cutting device for power cord production, including a base. A vertical plate is fixedly installed on the upper rear side of the base. A groove is formed on the upper front side of the vertical plate. A threaded rod with positive and negative threads is movably connected in the groove. A servo motor is fixedly installed on the right end of the threaded rod. Two sliders are threadedly connected to the outer surface of the threaded rod. A tension roller is fixedly installed at the front end of each slider. This device aims to solve the problem of low cutting accuracy. The key technical point is: a cutting device for power cord production. This utility model sets the feeding roller and two adjustable-gap tension rollers into a triangular wire path, forming a stable tension system. This allows for reliable clamping of the wire end before cutting, preventing wire retraction or displacement due to reaction force during cutting. This synergistic effect ensures high consistency in cutting length and significantly improves cutting accuracy.

Description

Technical Field

[0001] This utility model relates to the field of power cord manufacturing technology, and more specifically, to a cutting device for power cord manufacturing. Background Technology

[0002] The cutting device for power cord production is a core piece of equipment used in the wire and cable manufacturing process to accurately, efficiently, and automatically cut coiled continuous power cords to a specified length. It provides semi-finished wires with consistent length and neat end faces for subsequent processes such as stripping, crimping terminals, and injection molding, and is a key link in the automated power cord production line.

[0003] Existing power cord production cutting equipment uses multi-strand fine copper wires to significantly improve the flexibility of the power cord conductor. The insulation layer commonly uses flexible materials such as PVC (polyvinyl chloride), TPE (thermoplastic elastomer), and silicone rubber. During automated cutting, the flexible wire is prone to losing its straight shape during transportation due to insufficient rigidity and weak bending resistance, resulting in slack. This makes it impossible for the cutting equipment to accurately cut the power cord, affecting the cutting accuracy.

[0004] Therefore, a new solution is needed to address this problem. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a cutting device for power cord production, which aims to solve the technical problem of low cutting accuracy of power cords.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a cutting device for power cord production, comprising a base, a vertical plate fixedly installed on the upper rear side of the base, a sliding groove opened on the upper front side of the vertical plate, a positive and negative threaded rod movably connected in the sliding groove, a servo motor fixedly installed on the right end of the positive and negative threaded rod, two sliders threadedly connected to the outer surface of the positive and negative threaded rod, a tension roller fixedly installed at the front end of each of the two sliders, a feeding roller movably connected to the lower front side of the vertical plate, an electric wire movably connected to the outer surface of the feeding roller, the electric wire moving on the outer surface of the two tension rollers, an L-shaped plate fixedly installed on the middle side of the upper end of the vertical plate, a first electric cylinder fixedly installed on the upper end of the L-shaped plate, a support frame fixedly installed at the output end of the first electric cylinder, and a cutting disc movably connected in the support frame.

[0007] The present invention is further configured such that the feeding roller and the two left and right tensioning rollers are arranged in a triangular shape.

[0008] The present invention is further configured such that: a stop plate is fixedly installed on the upper right side of the base, a second electric cylinder is fixedly installed on the upper right side of the base, a clamping plate is fixedly installed on the output end of the second electric cylinder, and the clamping plate and the stop plate maintain a parallel position relationship.

[0009] The present invention is further configured such that a baffle plate is fixedly installed on the middle side of the front end of the chute.

[0010] In summary, this utility model has the following beneficial effects:

[0011] By setting the feeding roller and two adjustable tension rollers in a triangular wire path, a stable tension system is formed. This structure can apply uniform and controllable tension to the flexible power cord, forcing it to maintain a straight shape during transport. This fundamentally solves the problems of insufficient wire rigidity and easy bending and loosening caused by the stranding of multiple fine copper wires in the conductor and the use of flexible materials such as PVC / TPE / silicone rubber for the insulation layer. Combined with the second electric cylinder driving the clamping plate and the abutment plate, the wire end can be reliably clamped before cutting, preventing the wire from shrinking or shifting due to the reaction force at the moment of cutting. The above synergistic effect ensures a high degree of consistency in the cutting length and greatly improves the cutting accuracy. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of the cutting device of this utility model;

[0013] Figure 2 This is a rear-view perspective structural diagram of the cutting device of this utility model;

[0014] Figure 3 This is a three-dimensional structural diagram of the tension roller of this utility model.

[0015] In the diagram: 1. Base; 2. Vertical plate; 3. Slide groove; 4. Positive and negative threaded rod; 5. Servo motor; 6. Slider; 7. Tension roller; 8. Feeding roller; 9. Wire; 10. L-shaped plate; 11. First electric cylinder; 12. Support frame; 13. Cutting disc; 14. Support plate; 15. Second electric cylinder; 16. Clamping plate; 17. Material stop plate. Detailed Implementation

[0016] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0017] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not 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.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "set up / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within 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.

[0019] The present invention will now be described in detail with reference to the accompanying drawings.

[0020] A cutting device for power cord production, such as Figures 1 to 3 As shown, the system includes a base 1, a vertical plate 2 fixedly installed on the upper rear side of the base 1, a groove 3 opened on the upper front side of the vertical plate 2, a positive and negative threaded rod 4 movably connected in the groove 3, a servo motor 5 fixedly installed on the right end of the positive and negative threaded rod 4, two sliders 6 threadedly connected to the outer surface of the positive and negative threaded rod 4, a tension roller 7 fixedly installed at the front end of each of the two sliders 6, a feeding roller 8 movably connected to the lower front side of the vertical plate 2, an electric wire 9 movably connected to the outer surface of the feeding roller 8, the electric wire 9 moving on the outer surface of the two tension rollers 7, an L-shaped plate 10 fixedly installed on the middle side of the upper end of the vertical plate 2, a first electric cylinder 11 fixedly installed on the upper end of the L-shaped plate 10, a support frame 12 fixedly installed at the output end of the first electric cylinder 11, and a cutting disc 13 movably connected in the support frame 12.

[0021] like Figure 1 As shown, the feeding roller 8 and the two left and right tensioning rollers 7 are arranged in a triangular shape.

[0022] like Figure 1 As shown, a stop plate 14 is fixedly installed on the upper right side of the base 1, and a second electric cylinder 15 is fixedly installed on the upper right side of the base 1. A clamping plate 16 is fixedly installed at the output end of the second electric cylinder 15. The clamping plate 16 and the stop plate 14 are in a parallel position. When the front end of the wire 9 touches the stop plate 14, the second electric cylinder 15 is activated, pushing the clamping plate 16 at its output end to move to the left. Since the clamping plate 16 and the stop plate 14 are parallel, they work together to firmly clamp the wire 9 between them.

[0023] A baffle plate 17 is fixedly installed on the front middle side of the slide 3. The baffle plate 17 is installed at the front middle side of the slide 3 to form a physical barrier, preventing the debris splashed from the cutting area from falling directly into the slide 3. The length of the baffle plate 17 is only located in front of the cutting disc 13. The design of the baffle plate 17 takes into account that it can effectively block the debris without hindering the normal movement range of the slider 6, ensuring its functionality and safety.

[0024] Working principle: During operation, the coiled wire 9 is installed on the feeding roller 8. The motor at the rear end of the feeding roller 8 drives the feeding roller 8 to feed the wire 9 for a certain length and then stops feeding. At this time, one end of the wire 9 passes over the two tension rollers 7 and extends to below the cutting disc 13, and one end of the wire 9 is located between the abutment plate 14 and the clamping plate 16. When the second electric cylinder 15 is activated, the abutment plate 14 is moved to the left, and the abutment plate 14 clamps and fixes the wire 9 to prevent displacement and loosening of the wire 9 during the cutting process. The servo motor 5 is activated, and the servo motor 5 drives the positive and negative threaded rod 4 to rotate. Since the left and right ends of the positive and negative threaded rod 4 have threads with different rotation directions, the nuts or sliders 6 with nuts at the ends of the positive and negative threaded rod 4 can move relative to each other. The threads of the positive and negative threaded rods 4 are opposite in direction. The two sliders 6 move towards or away from each other in the groove 3, thereby driving the two tensioning rollers 7 to move closer or further away synchronously. The distance between the tensioning rollers 7 is adjusted to accommodate wires 9 of different diameters. When the tensioning rollers 7 are adjusted to the appropriate position, the wire 9 is tensioned by the triangular path formed by the tensioning rollers 7 and the feeding rollers 8, ensuring that the wire 9 maintains a straight shape during the cutting process below the cutting disc 13 and avoids slack. Subsequently, the first electric cylinder 11 is activated, pushing the support frame 12 to move downward, which drives the cutting disc 13, which is driven by the motor, to descend. The cutting disc 13 and the horizontally set wires are intersected in a cross shape, which facilitates the cutting of the wires 9. After the cutting is completed, the first electric cylinder 11 is reset, the cutting disc 13 rises, and one cutting process is completed.

[0025] In summary, a servo motor 5 drives the positive and negative threaded rods 4, causing the two sliders 6 to move synchronously towards or away from each other within the groove 3. This, in turn, drives the two tension rollers 7 to move synchronously closer or further away. This design utilizes the mechanical characteristics of the positive and negative threaded rods 4 to achieve the linkage adjustment of the two tension rollers 7. Through the precise control of the servo motor 5, the distance between the two rollers can be adjusted quickly and accurately to accommodate power cables of different diameters (such as AWG10 to AWG28). By setting the feed roller 8 and the two adjustable-distance tension rollers 7 into a triangular-shaped cable path, a stable tension system is formed. This structure can apply uniform and controllable tension to the flexible power cord, forcing it to maintain a straight shape during transmission. It fundamentally solves the problems of insufficient wire rigidity and easy bending and loosening caused by the stranding of multiple fine copper wires in the conductor and the use of flexible materials such as PVC / TPE / silicone rubber in the insulation layer. Combined with the second electric cylinder 15 driving the clamping plate 16 and the abutment plate 14, the end of the wire 9 can be reliably clamped before cutting, preventing the wire from shrinking or shifting due to the reaction force at the moment of cutting. The above synergistic effect ensures a high degree of consistency in the cutting length and greatly improves the cutting accuracy.

[0026] It is worth noting that the servo motor 5 disclosed in the above embodiments is specifically a Panasonic MINAS A6 series, and the first electric cylinder 11 and the second electric cylinder 15 are specifically Festo EGC series. The external control switch group and the external power supply control the operation of the servo motor 5, the first electric cylinder 11 and the second electric cylinder 15 using methods commonly used in the prior art.

[0027] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A cutting device for power cable production, comprising a base (1), characterized in that: A vertical plate (2) is fixedly installed on the upper rear side of the base (1). A sliding groove (3) is opened on the upper front side of the vertical plate (2). A positive and negative threaded rod (4) is movably connected in the sliding groove (3). A servo motor (5) is fixedly installed on the right end of the positive and negative threaded rod (4). Two sliders (6) are threadedly connected to the outer surface of the positive and negative threaded rod (4). A tension roller (7) is fixedly installed at the front end of each of the two sliders (6). A feeding roller (8) is movably connected to the lower front side of the vertical plate (2). An electric wire (9) is movably connected to the outer surface of the feeding roller (8). The electric wire (9) moves on the outer surface of the two tension rollers (7). An L-shaped plate (10) is fixedly installed on the middle side of the upper end of the vertical plate (2). A first electric cylinder (11) is fixedly installed on the upper end of the L-shaped plate (10). A support frame (12) is fixedly installed at the output end of the first electric cylinder (11). A cutting disc (13) is movably connected in the support frame (12).

2. The cutting apparatus for power cord production according to claim 1, characterized by: The feeding roller (8) and the two left and right tensioning rollers (7) are arranged in a triangular shape.

3. The cutting apparatus for power cord production according to claim 1, characterized by: A stop plate (14) is fixedly installed on the upper right side of the base (1), and a second electric cylinder (15) is fixedly installed on the upper right side of the base (1). A clamping plate (16) is fixedly installed on the output end of the second electric cylinder (15), and the clamping plate (16) and the stop plate (14) maintain a parallel position relationship.

4. The cutting apparatus for power cord production according to claim 1, characterized by: A baffle plate (17) is fixedly installed on the middle side of the front end of the chute (3).

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