High-efficiency full-automatic cold shrink tube expansion device
By designing a fully automatic cold shrink tube expansion device using an electrically controlled hydraulic telescopic mechanism and a pneumatic fixture, the problems of low production efficiency and high labor cost of existing expansion equipment are solved, and an efficient, stable and automated expansion process is achieved.
Patent Information
- Application Number
- CN202411864305.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-18
- Publication Date
- 2025-03-11
AI Technical Summary
At present, the market lacks standardization of cold shrink pipe expansion equipment, low production efficiency, high labor costs, large labor volume of operators, which seriously hinders production, and the expansion mechanism has large energy consumption and single applicability.
A high-efficiency fully automatic cold shrink tube expansion device is designed, using an electronically controlled hydraulic telescopic mechanism, and the synchronous translation of the wire plate and the expansion plate is controlled through hydraulic struts, combining pneumatic fixing devices and adjustable expansion heads to achieve automated and efficient expansion.
It greatly improves production efficiency, reduces the labor intensity of the operator, reduces the difficulty of operation, improves expansion efficiency and stability, and reduces energy consumption.
Smart Images
Figure CN119589941A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of cable accessories, in particular to a high-efficiency full-automatic cold shrink tube expansion device. Background Art
[0002] At present, cold shrink tubing is the main accessory of medium and low voltage cable accessories, and it is also an indispensable part. In cable accessories, it mainly plays the role of sheath protection. At the same time, it is also used as the main dielectric and plays an insulating role, such as in 0.6 / 1kV cold shrink cable accessories.
[0003] Cold shrink tubing is widely used in cable accessories and is used in large quantities. It is used in power cable accessories and communication optical cables. However, an important link that troubles manufacturers is the expansion process. At present, the expansion equipment in the market is not standardized, the production efficiency is low, the labor cost is relatively high, and the operator's workload is relatively large, which seriously hinders production. In addition, the expansion mechanism consumes a lot of energy and has a relatively single applicability. Summary of the invention
[0004] The technical problem to be solved by the present invention is that the expansion equipment in the current market is not standardized, the production efficiency is low, the labor cost is relatively high, the operator's workload is relatively large, which seriously hinders production, and the expansion mechanism consumes a lot of energy and has a relatively single applicability.
[0005] The technical solution adopted by the present invention to solve its technical problems is: a high-efficiency fully automatic cold shrink tube expansion device, including a main frame and three longitudinally arranged fixed plates, three steel wire plates and an expansion plate are arranged on the upper surface of the main frame, and a first hydraulic support rod for controlling the steel wire plate and a second hydraulic support rod for controlling the expansion plate are fixedly assembled on the outer side of the fixed plate at the right end of the upper surface of the main frame, a first embedded assembly flange is fixedly assembled inside the steel wire plate, a second embedded assembly flange is fixedly assembled inside the expansion plate, a steel wire is staggeredly fixed on the left side of the steel wire plate through the first embedded assembly flange, an expansion rod is fixedly assembled on the left side of the expansion plate through the second embedded assembly flange, and an expansion head is axially fixed on the end of the expansion rod.
[0006] Four Green columns are fixedly assembled inside the fixing plate, and the steel wire plate and the expansion plate are sleeved on the Green columns through side guide through holes and slidably assembled with the Green columns.
[0007] A front pneumatic fixing device and a rear pneumatic fixing device for fixing the cold shrink tube are fixedly mounted on the left ends of the four Green columns.
[0008] The expansion head includes a top extrusion head axially fixed at the end of the expansion rod, an embedded lateral extrusion frame movably mounted on the outer side of the expansion rod, a built-in hydraulic support rod fixedly mounted inside the expansion rod, and a lateral extrusion rod movably mounted between the embedded lateral extrusion frame and the protruding end of the built-in hydraulic support rod.
[0009] The front pneumatic fixing device and the rear pneumatic fixing device are both composed of a split horizontal fixing frame fixed on the Green column, a split vertical assembly frame bolted to the side wall of the split horizontal fixing frame, an arc clamping arm movably installed on the split vertical assembly frame through an axis, and a lifting cylinder fixedly installed on the side wall of the split vertical assembly frame.
[0010] The outer side surface of the top extrusion head is provided with a strip-shaped arc-shaped guide groove matched with the embedded lateral extrusion frame.
[0011] An internal air guide channel is provided on the inner side surface of the strip-shaped arc-shaped guide groove, and a lateral regulating valve is elastically installed inside the internal air guide channel.
[0012] The top end of the top extrusion head is threadedly assembled with a split type LED lighting head.
[0013] A lateral transverse guide rail is bolted to the upper end of the outer side surface of the main frame, and an expansion system electric control unit for controlling the entire device is slidably mounted on the main frame via the lateral transverse guide rail.
[0014] A side electric control frame is bolted to the fixed plate on the left side of the main frame, and electric-controlled feeding arms are movably mounted on the upper and lower ends of the side electric control frame.
[0015] The beneficial effects of the present invention are:
[0016] (1) The high-efficiency fully automatic cold shrink tube expansion device of the present invention adopts an electrically controlled hydraulic telescopic mechanism for high-efficiency automatic operation, which greatly improves production efficiency;
[0017] (2) Through the electronically controlled telescopic extrusion method, the frequency of expansion action is reduced, thereby reducing the labor intensity of the operator;
[0018] (3) Using electronic control to replace worker operation greatly reduces the difficulty of operation;
[0019] (4) Adopting batch operation mode can greatly improve the expansion efficiency;
[0020] (5) The main frame is equipped with a steel wire plate and an expansion plate controlled by a hydraulic strut, which can greatly improve the stability and efficiency of expansion through synchronous control of translation;
[0021] (6) A structurally adjustable expansion head is axially fixed at the end of the expansion rod, which greatly increases its expandable range;
[0022] (7) A pneumatic fixing device for fixing the cold shrink tube is fixedly installed at the left end of the Green column to improve the stability during the tube expansion process;
[0023] (8) Four Green columns are fixedly installed inside the fixed plate, which not only improves the stability of the electric control translation, but also facilitates the installation of external structures and function expansion. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] The present invention is further described below in conjunction with the accompanying drawings and embodiments.
[0025] Figure 1 It is a structural schematic diagram of the present invention.
[0026] Figure 2 It is a schematic structural diagram of the front pneumatic fixing device and the rear pneumatic fixing device in the present invention.
[0027] Figure 3 It is a structural schematic diagram of the expansion head in the present invention.
[0028] Figure 4 It is a partial schematic diagram of the position of the electric-controlled feeding arm in the present invention.
[0029] Figure 5 It is a schematic diagram of the internal structure of the expansion head in the present invention.
[0030] Figure 6 It is a schematic diagram of the structure of the internal transmission mechanism of the electric-controlled feeding arm in the present invention. DETAILED DESCRIPTION
[0031] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.
[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it 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. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0033] Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6A high-efficiency, fully automatic cold shrink tube expansion device is shown, comprising a main frame 1 and three longitudinally arranged fixed plates 2, three steel wire plates 3 and an expansion plate 4 are arranged on the upper surface of the main frame 1, a first hydraulic support rod 5 for controlling the steel wire plate 3 and a second hydraulic support rod 6 for controlling the expansion plate 4 are fixedly assembled on the outer side of the fixed plate 2 at the right end of the upper surface of the main frame 1, a first embedded assembly flange is fixedly assembled inside the steel wire plate 3, a second embedded assembly flange is fixedly assembled inside the expansion plate 4, a steel wire 7 is staggeredly fixed on the left side of the steel wire plate 3 through the first embedded assembly flange, an expansion rod 8 is fixedly assembled on the left side of the expansion plate 4 through the second embedded assembly flange, and an expansion head 9 is axially fixed on the end of the expansion rod 8.
[0034] Working principle: The transmission power source of the first hydraulic support rod 5 and the second hydraulic support rod 6 mainly relies on hydraulic transmission, and the power of the hydraulic system is used to drive the wire plate 3 and the expansion plate 4 to move back and forth, so as to achieve the purpose of expansion.
[0035] The steel wire 7 is made of high-strength stainless steel and is used as an expansion medium. The cold shrink tube is placed on the expansion medium, and the steel wire 7 is directly supported by the expansion rod, and the cold shrink tube is also indirectly supported, so as to achieve the expansion effect.
[0036] In order to cooperate with the top fixation, four Green columns 10 are fixedly assembled inside the fixing plate 2, and the wire plate 3 and the expansion plate 4 are slidably assembled with the Green columns 10 by being sleeved on the Green columns 10 through the side guide through holes.
[0037] In order to facilitate the front-end fixation, a front pneumatic fixing device 11 and a rear pneumatic fixing device 12 for fixing the shrink tube are fixedly mounted on the left ends of the four Green columns 10 .
[0038] The front pneumatic fixing device 11 and the rear pneumatic fixing device 12 are divided into two parts, the front and rear parts. Before expansion, the front end of the cold shrink tube is fixed when it is installed on the steel wire 7 to prevent the cold shrink tube from retreating during the expansion process. After the expansion of the rear front pneumatic fixing device 11 and the rear pneumatic fixing device 12 is completed, the expansion plate 4 retreats, driving the steel wire 7 to retreat. When the steel wire 7 is pulled, the cold shrink tube is prevented from retreating together with the steel wire 7, resulting in inconsistent lengths of the cold shrink tube.
[0039] For the convenience of control, the expansion head 9 includes a top extrusion head 91 axially fixed at the end of the expansion rod 8, an embedded lateral extrusion frame 92 movably mounted on the outer surface of the expansion rod 8, a built-in hydraulic strut 93 fixedly mounted inside the expansion rod 8, and a lateral extrusion rod 94 movably mounted on the protruding ends of the embedded lateral extrusion frame 92 and the built-in hydraulic strut 93.
[0040] The built-in hydraulic support rod 93 squeezes the lateral extrusion rod 94 by telescoping, and then controls the embedded lateral extrusion frame 92 to flip outward through the lateral extrusion rod 94, thereby changing the extrusion diameter, thereby facilitating the control of the cold shrink tube.
[0041] In order to cooperate in fixing the front end of the cold shrink tube, the front pneumatic fixing device 11 and the rear pneumatic fixing device 12 are both composed of a split horizontal fixing frame 121 fixed on the Green column 10, a split vertical assembly frame 122 bolted to the side wall of the split horizontal fixing frame 121, an arc-shaped clamping arm 123 installed on the split vertical assembly frame 122 through an axis, and a lifting cylinder 124 fixedly installed on the side wall of the split vertical assembly frame 122.
[0042] The lifting cylinder 124 squeezes the arc-shaped clamping arm 123 through the arc-shaped connecting rod at the extended end, and uses the arc-shaped clamping arm 123 to clamp and fix the front end of the cold shrink tube at both ends, and then the other end of the cold shrink tube is sleeved on the outside of the steel wire.
[0043] In order to cooperate with the side guidance, a strip-shaped arc-shaped guide groove 13 that cooperates with the embedded side extrusion frame 92 is opened on the outer side of the top extrusion head 91.
[0044] In order to reduce the friction force of the extrusion section, an internal air guide channel 14 is opened on the inner side surface of the strip arc-shaped guide groove 13, and a lateral regulating valve 15 is elastically installed inside the internal air guide channel 14.
[0045] An external air guide tube connected to the internal air guide channel 14 is fixedly installed on the outer side of the top extrusion head 91, and the external air guide tube is fixed on the outer side of the expansion rod 8. Then, when the outer side of the top extrusion head 91 squeezes the inside of the steel wire 7 internally, the steel wire 7 is squeezed inside the strip arc guide groove 13, and then the steel wire 7 is squeezed inwardly to the outside of the lateral regulating valve 15, and is squeezed into the internal air guide channel 14 through the lateral regulating valve 15. At this time, the external air pump supplies air to the internal air guide channel 14 through the external air guide tube, and then inflates the inside of the strip arc guide groove 13 through the external opening of the internal air guide channel 14, and then blows air to the connecting surface of the steel wire 7, thereby reducing the friction of the steel wire 7 inside the strip arc guide groove 13.
[0046] In order to visually display the position of the top extrusion head 91 and facilitate operation, the top end of the top extrusion head 91 is threadedly assembled with a split LED lighting head 16 .
[0047] By opening an internal threaded hole at the top of the top extrusion head 91, and then screwing the threaded connection pipe at the connection end of the split LED lighting head 16 into the internal threaded hole, the external pressure sensor generated when the top extrusion head 91 is extruded controls the start and stop of the split LED lighting head 16. The split LED lighting head 16 is started, and then its movement position can be intuitively displayed.
[0048] In order to facilitate lateral assembly and external control, a lateral transverse guide rail 17 is bolted to the upper end of the outer side surface of the main frame 1, and an expansion system electric control unit 18 for controlling the entire device is slidably assembled on the main frame 1 through the lateral transverse guide rail 17.
[0049] The lateral transverse guide rail 17 is internally movable with an internal adjustment screw controlled by the expansion system electric control unit 18. The internal adjustment screw is rotated to control the expansion system electric control unit 18 to slide and adjust along the lateral transverse guide rail 17, and the position adjustment is used to facilitate personnel operation.
[0050] The expansion system electric control unit 18 adopts a PLC program, and the PLC program is provided with an automatic counting function. The counting function relies on calculating each action cycle of the expansion plate 4, and multiplying the number of expansion action cycles by the number of expansion stations to obtain the final number of expanded products.
[0051] In order to cooperate with the top feeding, a side electric control frame 19 is bolted to the fixed plate 2 on the left side of the main frame 1, and the upper and lower ends of the side electric control frame 19 are movably equipped with electric-controlled feeding arms 20.
[0052] The side electric control frame 19 includes an outer telescopic support rod fixed on the fixed plate 2 on the left side of the main frame 1 and a front adjustment frame axially fixed on the protruding end of the outer telescopic support rod. The electric-controlled feeding arm 20 includes a flip adjustment arm movably assembled on the upper end of the front adjustment frame, a horizontal electric-controlled worm movably installed inside the front adjustment frame, an adjustment worm wheel fixed on one side of the movable connection end of the flip adjustment arm, and a lateral limit rod installed at the end of the flip adjustment arm.
[0053] The function of the side electric control frame 19 and the electric control feeding arm 20 is to insert the support tube inside the shrink tube into the inner side of the steel wire, and then the expansion head 9 passes through the support tube, and then the expansion head 9 expands the inner side of the steel wire 7, and then the expansion head 9 is shrunk. Just after it is separated from the support tube, the expansion head 9 expands again, and then the expansion head 9 stretches outward again, squeezing the support tube into the expansion tube, and then the steel wire plate 3 drives the steel wire 7 to separate from between the shrink tube and the support tube.
[0054] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.
Claims
1. A high-efficiency fully automatic cold shrink tube expansion device, comprising a main frame (1) and three longitudinally arranged fixing plates (2), characterized in that: The upper surface of the main frame (1) is provided with three steel wire plates (3) and an expansion plate (4); a first hydraulic support rod (5) for controlling the steel wire plate (3) and a second hydraulic support rod (6) for controlling the expansion plate (4) are fixedly mounted on the outer side of the fixed plate (2) at the right end of the upper surface of the main frame (1); a first embedded assembly flange is fixedly mounted inside the steel wire plate (3); a second embedded assembly flange is fixedly mounted inside the expansion plate (4); a steel wire (7) is staggeredly fixed on the left side of the steel wire plate (3) through the first embedded assembly flange; an expansion rod (8) is fixedly mounted on the left side of the expansion plate (4) through the second embedded assembly flange; an expansion head (9) is axially fixed at the end of the expansion rod (8).
2. The high-efficiency fully automatic cold shrink tube expansion device according to claim 1 is characterized in that: Four Green columns (10) are fixedly mounted inside the fixed plate (2), and the steel wire plate (3) and the expansion plate (4) are slidably mounted on the Green columns (10) through side guide through holes.
3. The high-efficiency fully automatic cold shrink tube expansion device according to claim 2 is characterized in that: A front pneumatic fixing device (11) and a rear pneumatic fixing device (12) for fixing the shrink tube are fixedly mounted on the left ends of the four Green columns (10).
4. The high-efficiency fully automatic cold shrink tube expansion device according to claim 1 is characterized in that: The expansion head (9) comprises a top extrusion head (91) axially fixed to the end of the expansion rod (8), an embedded lateral extrusion frame (92) movably mounted on the outer side of the expansion rod (8), a built-in hydraulic support rod (93) fixedly mounted inside the expansion rod (8), and a lateral extrusion rod (94) movably mounted between the embedded lateral extrusion frame (92) and the protruding end of the built-in hydraulic support rod (93).
5. The high-efficiency fully automatic cold shrink tube expansion device according to claim 3 is characterized by: The front pneumatic fixing device (11) and the rear pneumatic fixing device (12) are both composed of a split transverse fixing frame (121) fixed on the Green column (10), a split longitudinal assembly frame (122) bolted to the side wall of the split transverse fixing frame (121), an arc-shaped clamping arm (123) movably mounted on the split longitudinal assembly frame (122) through an axis, and a lifting cylinder (124) fixedly mounted on the side wall of the split longitudinal assembly frame (122).
6. The high-efficiency fully automatic cold shrink tube expansion device according to claim 4 is characterized by: The outer side surface of the top extrusion head (91) is provided with a strip-shaped arc-shaped guide groove (13) which matches with the embedded lateral extrusion frame (92).
7. The high-efficiency fully automatic cold shrink tube expansion device according to claim 6 is characterized by: An internal air guide channel (14) is provided on the inner side surface of the strip-shaped arc-shaped guide groove (13), and a lateral regulating valve (15) is elastically mounted inside the internal air guide channel (14).
8. The high-efficiency fully automatic cold shrink tube expansion device according to claim 4 is characterized by: The top end of the top extrusion head (91) is threadedly assembled with a split-type LED lighting head (16).
9. The high-efficiency fully automatic cold shrink tube expansion device according to claim 1 is characterized by: A lateral transverse guide rail (17) is bolted to the upper end of the outer side surface of the main frame (1), and an expansion system electric control unit (18) for controlling the entire device is slidably mounted on the main frame (1) via the lateral transverse guide rail (17).
10. The high-efficiency fully automatic cold shrink tube expansion device according to claim 1 is characterized by: A side electric control frame (19) is bolted to a fixed plate (2) on the left side of the main frame (1), and an electric-controlled feeding arm (20) is movably mounted on the upper and lower ends of the side electric control frame (19).