A cold shrink tubing expansion and positioning device

Abstract

This utility model relates to the field of cold shrink tubing expansion and positioning technology, and discloses a cold shrink tubing expansion and positioning device, including: a base plate and a horizontal plate, the horizontal plate being fixedly installed on the top of the base plate; a stop rod, four electric push rods and a baffle, the stop rod being fixedly installed on the outside of the horizontal plate, and the four electric push rods being fixedly installed inside the stop rod; this cold shrink tubing expansion and positioning device expands uniformly and has a regular shape, with high positioning accuracy: the device synchronously drives an L-shaped support rod through four circumferentially evenly distributed electric push rods, with the free ends of the support rods facing the same central axis, applying uniform tension from all sides of the inner wall of the cold shrink tubing, ensuring that the cold shrink tubing expands precisely into a regular circle along the circumference, avoiding deformation caused by uneven local force; the support cylinder and the L-shaped support rod are coaxial around the axis, and with the linear movement guided by the sliding rod, the spiral support is accurately embedded into the expanded cold shrink tubing, achieving high-precision docking and positioning of the cold shrink tubing and the support, ensuring compatibility for subsequent use.

Description

Technical Field

[0001] This utility model relates to the field of cold shrink tubing expansion and positioning technology, specifically a cold shrink tubing expansion and positioning device. Background Technology

[0002] In cable connections for power and telecommunications industries, cold shrink tubing is widely used due to its ability to shrink and shape without heating. The quality of its expansion and positioning directly affects the sealing and insulation performance of the cable. However, traditional cold shrink tubing expansion and positioning methods have many drawbacks and cannot meet the demands of high-efficiency production. Currently, the mainstream method relies heavily on manual expansion. Operators use tools to pull the cold shrink tubing open and then manually insert a spiral support for positioning. This is not only labor-intensive, but uneven manual force can easily lead to deformation of the cold shrink tubing (such as elliptical shape or uneven thickness), affecting the fit with the support and causing sealing problems during subsequent shrinkage.

[0003] Meanwhile, traditional devices lack precise guiding and positioning structures: the expansion components of some semi-automatic devices are unevenly distributed, causing the center of the cold shrink tubing to shift after expansion, making it easy for the support to get stuck or misaligned during insertion, resulting in low positioning accuracy; moreover, most devices have poor adaptability, only capable of handling a single specification of cold shrink tubing. When changing to products of different diameters, readjustment or component replacement is required, making operation cumbersome and production efficiency low. In addition, the expansion force of traditional devices is difficult to control. Over-expansion can easily lead to the loss of elasticity of the cold shrink tubing, while insufficient expansion will prevent the support from being inserted smoothly, further exacerbating the problem of low product qualification rate. There is an urgent need for a device that can expand evenly, position precisely, and has strong adaptability to solve the above pain points. Utility Model Content

[0004] In view of the shortcomings of the prior art, the present invention provides a cold shrink tubing expansion and positioning device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A cold shrink tubing expansion and positioning device, comprising: A base plate and a cross plate, wherein the cross plate is fixedly installed on the top of the base plate; The system includes a stop lever, four electric actuators, and a baffle. The stop lever is fixedly installed on the outside of the horizontal plate, the four electric actuators are fixedly installed inside the stop lever, and the baffle is fixedly installed at the end of the stop lever away from the horizontal plate. Four L-shaped support rods are respectively fixedly installed at the output ends of the four electric actuators; Two sliding rods, a V-shaped plate, and a support cylinder are provided. The two sliding rods are fixedly installed on the top of the base plate, the V-shaped plate is slidably connected to the outside of the two sliding rods, and the support cylinder is fixedly installed on the left side of the V-shaped plate. The push rod is fixedly installed on the right side of the V-shaped plate.

[0006] Furthermore, the four electric actuators are evenly distributed around the circumference of the stop bar, and the free ends of the four L-shaped support rods face the same central axis.

[0007] Furthermore, the axis of the support cylinder coincides with the central axis enclosed by the four L-shaped support rods, and the outer diameter of the support cylinder is smaller than the maximum inner diameter of the four L-shaped support rods after expansion.

[0008] Furthermore, the two slide rods are arranged in parallel, and the axis of the slide rods is parallel to the axis of the support cylinder.

[0009] Furthermore, the inner side of the V-shaped plate is provided with sliding holes that are adapted to the two slide rods, and the inner wall of the sliding hole is in contact with the outer wall of the slide rod.

[0010] Furthermore, the baffle has a through hole at its center, the inner diameter of which is larger than the outer diameter of the support cylinder and smaller than the minimum inner diameter of the four L-shaped support rods after they have contracted.

[0011] Furthermore, the length of the L-shaped support rod is greater than the extension stroke of the electric actuator, and the bending angle of the L-shaped support rod is 90°.

[0012] Furthermore, the axis of the push rod is collinear with the axis of the support cylinder, and the outer wall of the push rod is provided with anti-slip texture.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. This cold shrink tubing expansion and positioning device features uniform expansion, regular shape, and high positioning accuracy: The device synchronously drives an L-shaped support rod through four circumferentially evenly distributed electric actuators. The free ends of the support rods face the same central axis, applying uniform tension from all sides of the inner wall of the cold shrink tubing. This ensures that the cold shrink tubing expands precisely into a regular circle along the circumference, avoiding deformation caused by uneven local stress. The support cylinder and the L-shaped support rod are coaxial, and with the linear movement guided by the sliding rod, the spiral support is precisely embedded into the expanded cold shrink tubing, achieving high-precision docking and positioning between the cold shrink tubing and the support, ensuring compatibility for subsequent use.

[0014] 2. This cold shrink tubing expansion and positioning device is convenient, efficient, and labor-intensive: The device adopts a collaborative design of "electric expansion plus manual pushing". The electric push rod automatically completes the expansion of the cold shrink tubing, eliminating the need for manual pulling and significantly reducing labor intensity; the V-shaped plate is slidably connected to the slide rod through the matching sliding hole, and the push rod force is directly transmitted along the axis, ensuring smooth movement and accurate positioning of the support cylinder. The entire process can be completed in just three steps: pre-installation, starting the equipment, and pushing and docking. The operation is simple and easy to understand, significantly improving the expansion and positioning efficiency and adapting to the needs of mass production.

[0015] 3. This cold shrink tubing expansion and positioning device features a stable and reliable structure with strong adaptability: the design of each component takes into account both stability and compatibility. The L-shaped support rod with its 90° bend structure has high strength and is not easily deformed during expansion. Combined with the electric push rod, it ensures stable extension and retraction, guaranteeing consistent expansion results. The outer diameter of the support cylinder, the inner diameter of the baffle through hole, and the expansion range of the L-shaped support rod are precisely matched, ensuring smooth docking of the support cylinder and preventing damage from excessive expansion of the cold shrink tubing. The device can adapt to the expansion needs of cold shrink tubing of different diameters by adjusting the extension and retraction stroke of the electric push rod, making it highly versatile and meeting diverse production scenarios. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model; Figure 2 This is a three-dimensional schematic diagram of the base plate and related structures of this utility model; Figure 3 This is a three-dimensional schematic diagram of the horizontal plate and related structures of this utility model.

[0017] In the diagram: 1. Base plate; 2. Horizontal plate; 3. Stop bar; 4. Electric actuator; 5. Baffle; 6. L-shaped support rod; 7. Slide rod; 8. V-shaped plate; 9. Push rod; 10. Support cylinder. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Example: Please refer to the following: Figure 1-3 , A cold shrink tubing expansion and positioning device, comprising: The base plate 1 and the horizontal plate 2 are fixedly installed on the top of the base plate 1. The stop lever 3, four electric push rods 4 and baffle 5 are fixedly installed on the outside of the horizontal plate 2, the four electric push rods 4 are fixedly installed inside the stop lever 3, and the baffle 5 is fixedly installed at the end of the stop lever 3 away from the horizontal plate 2. Four L-shaped support rods 6 are respectively fixedly installed at the output ends of four electric actuators 4; Two sliding rods 7, a V-shaped plate 8, and a support cylinder 10 are provided. The two sliding rods 7 are fixedly installed on the top of the base plate 1, the V-shaped plate 8 is slidably connected to the outside of the two sliding rods 7, and the support cylinder 10 is fixedly installed on the left side of the V-shaped plate 8. Push rod 9 is fixedly installed on the right side of V-shaped plate 8; Specifically, the base plate 1 and the horizontal plate 2: The base plate 1 is the reference bearing structure of the device, providing a fixed installation platform for all components such as the horizontal plate 2 and the slide bar 7, ensuring the overall stability of the device during the expansion and positioning process and preventing component displacement due to vibration; The horizontal plate 2 is fixed to the top of the base plate 1 and serves as the installation carrier for the stop bar 3. By fixing the stop bar 3 on the outside, it provides vertical support for the stop bar 3, the electric push rod 4, and the baffle 5. At the same time, the plate-like structure of the horizontal plate 2 can enhance the installation stability of the stop bar 3 and prevent the stop bar 3 from shaking when the electric push rod 4 is operating; The components are: stop lever 3, electric actuator 4, baffle 5, and L-shaped support rod 6. Stop lever 3 is fixed to the outside of horizontal plate 2, providing internal installation space for electric actuator 4. It protects electric actuator 4 through a closed rod-like structure and limits the installation direction of electric actuator 4, ensuring that the output end of electric actuator 4 faces the same direction. Electric actuator 4 is the power source for the extension and retraction of L-shaped support rod 6. It drives L-shaped support rod 6 to expand outward or retract inward through electric extension and retraction, realizing the opening and release of cold shrink tubing. Baffle 5 is fixed to the end of stop lever 3 away from horizontal plate 2. On the one hand, it is used to prevent excessive movement of cold shrink tubing. On the other hand, it provides a docking reference for support cylinder 10, ensuring that support cylinder 10 moves accurately to the preset position. L-shaped support rod 6 is fixed to the output end of electric actuator 4. It is the cold shrink tubing expansion actuator. Its bending structure can fit the inner wall of cold shrink tubing. When expanding outward, it supports cold shrink tubing from the inside to make it reach the preset diameter. When retracting, it can detach from cold shrink tubing and fit into support cylinder 10, providing conditions for the cooperation between cold shrink tubing and support cylinder 10. Slide rod 7, V-shaped plate 8, support cylinder 10, and push rod 9: Slide rod 7 is fixed to the top of base plate 1, providing a sliding track for V-shaped plate 8, ensuring that V-shaped plate 8 moves smoothly in a fixed direction and avoids deviation that could cause misalignment of support cylinder 10; V-shaped plate 8 is slidably connected to the outside of slide rod 7, serving as a connecting medium between support cylinder 10 and push rod 9, converting the manual pushing force of push rod 9 into the horizontal moving force of support cylinder 10, while the V-shaped structure balances support stability and lightweight, preventing swaying during movement; Support cylinder 10 is fixed to the left side of V-shaped plate 8, used to mount the spiral support, which is the core carrier for cold shrink tubing positioning. After the cold shrink tubing expands, support cylinder 10 carries the spiral support into the interior of the cold shrink tubing, providing shaping support for the cold shrink tubing and achieving positioning after expansion; Push rod 9 is fixed to the right side of V-shaped plate 8, serving as a manual force application component for the operator. By pushing push rod 9, V-shaped plate 8 and support cylinder 10 are moved, achieving precise alignment between support cylinder 10 and cold shrink tubing; In the embodiment: four electric push rods 4 are evenly distributed around the circumference of the stop bar 3, and the free ends of the four L-shaped support rods 6 face the same central axis; Specifically, the four electric actuators 4 are evenly distributed around the circumference of the stop bar 3, which allows the L-shaped support rod 6 to apply expansion force synchronously. If the electric actuators 4 are not evenly distributed, the force exerted by the L-shaped support rod 6 on the cold shrink tube will be biased to one side, causing the cold shrink tube to expand into an elliptical shape instead of forming a regular circle, affecting the fit with the spiral support. The even distribution allows the four electric actuators 4 to extend and retract synchronously, and the L-shaped support rod 6 applies outward tension evenly from all sides of the inner wall of the cold shrink tube, ensuring that the cold shrink tube expands evenly in the circumference and forms a regular circular structure. The free ends of the L-shaped struts 6 face the same central axis, which ensures that the expansion center of the cold shrink tube is aligned with the axis of the support cylinder 10. If the free ends are misaligned, the center of the cold shrink tube will shift after expansion, and the support cylinder 10 will be misaligned and unable to be inserted smoothly when it carries the spiral support. The same central axis setting allows the center of the cold shrink tube after expansion to coincide with the axis of the support cylinder 10, laying the foundation for precise docking and avoiding jamming or misalignment during docking. In the embodiment: the axis of the support cylinder 10 coincides with the central axis enclosed by the four L-shaped support rods 6, and the outer diameter of the support cylinder 10 is smaller than the maximum inner diameter of the four L-shaped support rods 6 after expansion; Specifically, the axis of the support cylinder 10 coincides with the central axis of the L-shaped support rod 6, which can achieve coaxial docking. If the axis is offset, the support cylinder 10 will collide with the inner wall of the cold shrink tube when it moves and cannot enter smoothly, or it will not fit evenly with the inner wall of the cold shrink tube after entering, affecting the positioning effect. The coaxial setting allows the support cylinder 10 to move smoothly along the central axis of the cold shrink tube and enter the expanded cold shrink tube smoothly, and fit fully with the inner wall of the cold shrink tube. The outer diameter of the support cylinder 10 is smaller than the maximum inner diameter of the L-shaped support rod 6 after expansion, which is to leave a gap for the support cylinder 10 to enter. If the outer diameter of the support cylinder 10 is too large, it will be too large to be inserted into the inner wall of the expanded cold shrink tube; if it is too small, the gap between it and the inner wall of the cold shrink tube will be too large after it enters, and the cold shrink tube will be easy to shake and the positioning will not be firm. A reasonable size difference allows the support cylinder 10 to easily enter the cold shrink tube, while maintaining a moderate fit with the inner wall of the cold shrink tube to ensure stable positioning. In this embodiment: the two slide rods 7 are arranged in parallel, and the axis of the slide rods 7 is parallel to the axis of the support cylinder 10; Specifically, the parallel arrangement of the two sliding rods 7 allows the V-shaped plate 8 to be subjected to balanced force and slide smoothly. If the sliding rods 7 are not parallel, the V-shaped plate 8 will get stuck when sliding because the sliding resistance on both sides is inconsistent, causing the support cylinder 10 to tilt when moving. The parallel arrangement allows the sliding resistance on both sides of the V-shaped plate 8 to be uniform, and it can move smoothly along the sliding rods 7, avoiding tilting or getting stuck, and ensuring that the support cylinder 10 always keeps moving horizontally. The axis of slide rod 7 is parallel to the axis of support cylinder 10, which ensures that the movement direction of support cylinder 10 is consistent with the axis of cold shrink tubing. If the axis of slide rod 7 is tilted, support cylinder 10 will move at an angle and collide with the end face of cold shrink tubing when entering it, making it difficult to insert smoothly. The parallel setting allows support cylinder 10 to move in a straight line along the axis of cold shrink tubing, accurately entering the interior of cold shrink tubing and improving docking efficiency. In the embodiment: the inner side of the V-shaped plate 8 is provided with sliding holes that are adapted to the two slide rods 7, and the inner wall of the sliding hole is in contact with the outer wall of the slide rod 7; Specifically, the sliding hole is adapted to the slide rod 7 to prevent the V-shaped plate 8 from wobbling when sliding. If the sliding hole is too large, the gap between the V-shaped plate 8 and the slide rod 7 will be too large, and the V-shaped plate 8 will shift left and right when moving, and the support cylinder 10 will shift accordingly, making it impossible to accurately align. If it is too small, the sliding resistance will be too large and it will not be easy to push. The adapted size allows the V-shaped plate 8 to be stably fitted on the slide rod 7, with no lateral shift when moving, and the support cylinder 10 to move accurately. The inner wall of the sliding hole fits snugly against the outer wall of the slide rod 7, which can reduce sliding friction and wear. If the fit is not tight, gaps and wobbling will occur during sliding, affecting the positioning accuracy. A tight fit makes the sliding process smoother, while reducing component wear, extending service life, and ensuring that accurate movement and positioning can still be maintained after long-term use. In the embodiment: the baffle 5 has a through hole in the center, the inner diameter of the through hole is larger than the outer diameter of the support cylinder 10, and smaller than the minimum inner diameter of the four L-shaped support rods 6 after they are contracted; Specifically, a through hole is provided in the center of the baffle 5 to provide a passage for the support cylinder 10. If the baffle 5 does not have a through hole, the support cylinder 10 cannot pass through the baffle 5 and the function of the cold shrink tubing docking device will fail. The through hole design allows the support cylinder 10 to pass through the center of the baffle 5 and directly enter the interior of the cold shrink tubing, realizing the cooperation between the support and the cold shrink tubing. The inner diameter of the through hole is larger than the outer diameter of the support cylinder 10 and smaller than the minimum inner diameter of the L-shaped support rod 6 after shrinkage. This achieves double limiting. The inner diameter of the through hole is larger than the outer diameter of the support cylinder 10, ensuring that the support cylinder 10 passes through smoothly. The inner diameter of the through hole is smaller than the minimum inner diameter of the L-shaped support rod 6 after shrinkage, which can prevent the L-shaped support rod 6 from expanding too much to the outside and avoid damage to the cold shrink tube by excessive stretching. At the same time, it restricts the axial movement of the cold shrink tube and prevents the cold shrink tube from falling off the L-shaped support rod 6, ensuring a stable expansion process. In the embodiment: the length of the L-shaped support rod 6 is greater than the extension stroke of the electric actuator 4, and the bending angle of the L-shaped support rod 6 is 90°; Specifically, the length of the L-shaped strut 6 is greater than the telescopic stroke of the electric actuator 4, which provides sufficient effective length for the expansion of the cold shrink tube. If the strut length is too short, the telescopic stroke of the electric actuator 4 will be limited by the strut length and will not be able to fully expand the cold shrink tube, and the diameter of the cold shrink tube will not meet the preset requirements. Sufficient length allows the electric actuator 4 to fully utilize its telescopic stroke, and the L-shaped strut 6 can expand outward to the preset position to ensure that the cold shrink tube is fully expanded and meets the matching dimensions with the spiral support. The L-shaped strut 6 has a bending angle of 90°, which can balance the expansion effect and structural strength. The 90° bend allows the horizontal section of the strut to be perpendicular to the connection end with the electric actuator 4 and the longitudinal section to be perpendicular to the contact end with the cold shrink tube. The longitudinal section can act perpendicularly on the inner wall of the cold shrink tube, making the expansion force transmission more direct. At the same time, the 90° bend structure has strong resistance to deformation, avoiding the strut bending deformation during expansion and affecting the expansion accuracy. In this embodiment: the axis of the push rod 9 is collinear with the axis of the support cylinder 10, and the outer wall of the push rod 9 is provided with anti-slip texture. Specifically, the axis of push rod 9 is collinear with the axis of support cylinder 10, which allows the thrust to be directly transmitted to support cylinder 10. If the axis is offset, a lateral component force will be generated when push rod 9 is pushed, causing V-shaped plate 8 to slide and offset, and support cylinder 10 will not be able to move in a straight line. The collinear setting allows the thrust applied by the operator to be directly transmitted to support cylinder 10 along the axial direction without additional lateral force, ensuring that support cylinder 10 moves accurately in a straight line and the docking efficiency is higher. The outer wall of the push rod 9 is provided with anti-slip texture, which can increase the friction between the hand and the push rod 9. When the operator pushes the push rod 9, the hand is prone to sweating or slipping, which leads to unstable force application and uneven movement speed of the support cylinder 10. The anti-slip texture can effectively increase the coefficient of friction, so that even if the hand is sweaty, it can be held stably, the force is applied more evenly, the support cylinder 10 moves smoothly, and avoids docking deviation caused by slipping. Working principle: Step 1, Pre-installation Preparation: Installation of cold shrink tubing and spiral supports: In the initial state of the device, the electric actuator 4 is in a retracted state, the four L-shaped support rods 6 are in a retracted and converged state, and the V-shaped plate 8 drives the support cylinder 10 to be located at a low position on the right side of the slide rod 7. The operator first puts the cold shrink tube to be expanded on the outside of the four L-shaped support rods 6, with one end of the cold shrink tube attached to the inner side of the baffle 5 to prevent the cold shrink tube from moving excessively. Then, the spiral support is put on the outside of the support cylinder 10 to ensure that the spiral support is tightly attached to the support cylinder 10, completing the pre-installation preparation. At this time, the free ends of the four L-shaped support rods 6 face the same central axis, and the axis of the support cylinder 10 coincides with the central axis enclosed by the L-shaped support rods 6, laying the foundation for subsequent docking. Step 2, Electric Drive: Uniform Expansion of Cold Shrink Tubing The four electric actuators 4, evenly distributed circumferentially inside the start lever 3, extend and retract synchronously, driving the L-shaped support rod 6 at the output end to expand outward. The L-shaped support rod 6 has a bending angle of 90°, and its longitudinal section fits against the inner wall of the cold shrink tube, applying outward tension evenly from all sides, so that the cold shrink tube gradually expands circumferentially until the length of the L-shaped support rod 6 is greater than the extension and retraction stroke of the electric actuator 4, ensuring that the cold shrink tube expands fully. During the expansion process, the inner diameter of the through hole in the center of the baffle 5 is smaller than the minimum inner diameter of the L-shaped support rod 6 after contraction, which can prevent the L-shaped support rod 6 from being over-expanded and causing damage to the cold shrink tube, while limiting the axial displacement of the cold shrink tube and ensuring that the expansion shape is regular. Step 3, Manual Push: Precisely Align Support Cylinder 10 with Cold Shrink Tubing: After the cold shrink tubing has fully expanded, keep the electric push rod 4 in place to maintain the expanded shape of the cold shrink tubing; the operator holds the push rod 9, which has anti-slip texture on its outer wall, ensuring a stable grip without slipping, and pushes the push rod 9 to the left. The thrust is transmitted to the support cylinder 10 through the V-shaped plate 8; the V-shaped plate 8 is slidably connected to two parallel sliding rods 7 through the matching sliding holes on its inner side. The axis of the sliding rods 7 is parallel to the axis of the support cylinder 10, ensuring that the V-shaped plate 8 drives the support cylinder 10 to move smoothly in a straight line; The outer diameter of the support cylinder 10 is smaller than the maximum inner diameter of the L-shaped support rod 6 after expansion, and the inner diameter of the central through hole of the baffle 5 is larger than the outer diameter of the support cylinder 10. The support cylinder 10 passes smoothly through the through hole of the baffle 5 and gradually enters the interior of the expanded cold shrink tube until the spiral support completely fits the inner wall of the cold shrink tube, thus completing the docking of the cold shrink tube and the support. Step 4: Shrink Positioning: Cold shrink tubing is shaped and fixed. After the support cylinder 10 is in place, the electric actuator 4 is activated in the reverse direction, driving the L-shaped support rod 6 to retract inward. The L-shaped support rod 6 disengages from the inner wall of the cold shrink tube and fits against the outer side of the support cylinder 10. The operator presses down on both ends of the cold shrink tube to prevent it from shifting. Then, the actuator 9 is slowly pulled to the right, causing the V-shaped plate 8 and the support cylinder 10 to move to the right synchronously. The spiral support remains inside the cold shrink tube to provide shaping support, achieving precise positioning of the expanded cold shrink tube. Finally, the equipment is turned off, the positioned cold shrink tube is removed, and the device completes one expansion and positioning process, ready for the next operation.

[0020] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cold shrink tubing expansion and positioning device, characterized in that, include: A base plate (1) and a horizontal plate (2), wherein the horizontal plate (2) is fixedly installed on the top of the base plate (1); The stop bar (3), four electric push rods (4) and baffle (5) are fixedly installed on the outside of the horizontal plate (2), the four electric push rods (4) are fixedly installed inside the stop bar (3), and the baffle (5) is fixedly installed at the end of the stop bar (3) away from the horizontal plate (2). Four L-shaped support rods (6) are fixedly installed at the output ends of the four electric actuators (4); Two sliding rods (7), a V-shaped plate (8) and a support cylinder (10), the two sliding rods (7) are fixedly installed on the top of the base plate (1), the V-shaped plate (8) is slidably connected to the outside of the two sliding rods (7), and the support cylinder (10) is fixedly installed on the left side of the V-shaped plate (8); Push rod (9) is fixedly installed on the right side of the V-shaped plate (8).

2. The cold shrink tubing expansion and positioning device according to claim 1, characterized in that, The four electric actuators (4) are evenly distributed around the circumference of the stop bar (3), and the free ends of the four L-shaped support rods (6) face the same central axis.

3. The cold shrink tubing expansion and positioning device according to claim 1, characterized in that, The axis of the support cylinder (10) coincides with the central axis enclosed by the four L-shaped support rods (6), and the outer diameter of the support cylinder (10) is smaller than the maximum inner diameter of the four L-shaped support rods (6) after expansion.

4. The cold shrink tubing expansion and positioning device according to claim 1, characterized in that, The two slide rods (7) are arranged in parallel, and the axis of the slide rods (7) is parallel to the axis of the support cylinder (10).

5. The cold shrink tubing expansion and positioning device according to claim 1, characterized in that, The inner side of the V-shaped plate (8) is provided with sliding holes that are adapted to the two slide rods (7), and the inner wall of the sliding hole is in contact with the outer wall of the slide rod (7).

6. The cold shrink tubing expansion and positioning device according to claim 1, characterized in that, The baffle (5) has a through hole in the center. The inner diameter of the through hole is larger than the outer diameter of the support cylinder (10) and smaller than the minimum inner diameter of the four L-shaped support rods (6) after contraction.

7. The cold shrink tubing expansion and positioning device according to claim 1, characterized in that, The length of the L-shaped support rod (6) is greater than the extension stroke of the electric push rod (4), and the bending angle of the L-shaped support rod (6) is 90°.

8. The cold shrink tubing expansion and positioning device according to claim 1, characterized in that, The axis of the push rod (9) is collinear with the axis of the support cylinder (10), and the outer wall of the push rod (9) is provided with anti-slip texture.

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