Concentrated curing glue-dripping-free vacuum glue dipping device and glue dipping method for insulating tube of insulating operating rod

Abstract

The invention discloses a centralized curing glue-dripping-free vacuum glue dipping device and a glue dipping method for an insulating tube of an insulating operating rod, and belongs to the technical field of production and manufacturing of the insulating operating rod. The glue dipping method mainly comprises the working procedures of preparing a hollow pipe fitting, installing a core rod, installing a glue injection assembly, vacuumizing, pouring glue, thermally cutting and locking, forming and curing and the like. The impregnation device mainly comprises a heat sealing mechanism and a suspended pipe die, wherein the heat sealing mechanism comprises a positioning stand column, a glue overflow system, an upper hot cutting assembly, a sliding clamping mechanism, a glue injection system and a lower hot cutting assembly. The production mode of the insulating tube is innovated, centralized one-time curing is achieved, no glue dripping phenomenon exists in the turnover process, the production period is short, idle time is fully utilized, the production efficiency is high, energy loss is small, manufactured products are good in consistency and high in practicability, and breakthrough significance is achieved in the technical field of insulating tube manufacturing.

Description

Technical Field

[0001] The present invention belongs to the technical field of insulating operating rod production and manufacturing, and specifically, it especially relates to an insulating operating rod insulating tube centralized curing and drip-free vacuum glue dipping device and a glue dipping method thereof, which changes the traditional production mode of insulating tubes, realizes centralized batch curing processing of insulating tubes without glue dripping, effectively simplifies the manufacturing process, has a unique and ingenious structural design, strong self-adaptation ability, easy manufacturing implementation, low implementation cost, high automation integration, greatly improves the workshop production environment, greatly improves production efficiency, and effectively saves energy. Background Art

[0002] The insulated operating rod is an insulating tool specially used for live working, inspection and maintenance in power systems. It is mainly composed of an insulating tube and a joint set at the end of the insulating tube. The insulating tube is the core component of the insulating operating rod and is generally made of high-performance insulating materials such as glass fiber and epoxy resin.

[0003] The production and manufacturing of insulating tubes usually have two modes: "long rod re-cutting" and "direct forming".

[0004] The so-called "long rod re-cutting" mode refers to the production of a whole rod first, and then cutting it into several rods of the required size. The Chinese patent with the authorization announcement number CN111605230B, the authorization announcement date June 28, 2022, and the invention name "Insulating rod and its manufacturing method and manufacturing device" discloses a manufacturing method for producing insulating tubes using the "long rod re-cutting" mode, which mainly includes "core rod molding, using insulating material to process and shape into a core rod; coating fiber felt, soaking the fiber felt in a foaming resin, and coating the soaked fiber felt on the outside of the core rod; the foaming resin content of the soaked fiber felt is 30% to 50%; coating fiber dry yarn, by arranging the fiber dry yarn in a circumferential direction, and / or, the longitudinal layer design is coated on the outside of the fiber felt soaked in foaming resin to form a semi-finished insulating rod; resin matrix impregnation, the semi-finished insulating rod is impregnated with the resin matrix by injection dipping, and the injection pressure is 0.5~1.5bar, and the resin matrix adopts any one or more of epoxy resin, vinyl resin, single-component polyurethane or two-component polyurethane; curing and molding, the semi-finished insulating rod impregnated with the resin matrix is ​​cured and molded at high temperature; cutting, the semi-finished insulating rod containing the resin matrix after high-temperature curing and molding is cut into a plurality of insulating rods. The glue used in the production of insulating tubes has good fluidity. The traditional production method will have glue dripping before the molding and curing process, which not only causes the waste of glue and the pollution of the workshop environment, but also easily makes the surface of the semi-finished product after curing uneven, increasing the workload and labor intensity of subsequent surface grinding. In addition, the semi-finished product of the "long rod re-cutting" mode has a long length, a large production space, difficult turnover, and low production efficiency; and the molding and curing process requires customized drying equipment and high production costs.

[0005] The Chinese patent with application number 2019103019977, application date April 15, 2019, and invention name "Insulating rod injection mold and insulating rod production process" discloses a "direct molding" mode of insulating tube manufacturing method, which mainly includes "Step 1: prepare the injection mold, clean the inner cavity wall of the outer mold of the injection mold and the outer circle of the core rod, and then apply a release agent; Step 2: wind the fiber material on the core rod, and roll the fiber material wound on the core rod to the same diameter as the molding cavity; then assemble the core rod wound with the fiber material and the upper end cover and insert it into the inner cavity of the outer mold. , and seal the ports at both ends of the outer mold through the upper end cover and the lower end cover; Step three: seal the injection hole of the lower end cover, connect the exhaust hole on the upper end cover to the vacuum pump, and remove the air in the molding cavity to make it a vacuum state; turn on the heating device set in the inner cavity of the core rod, adjust the heating temperature to 100-130°C, so as to perform high-temperature vacuum drying on the fiber material and remove the residual air and moisture in the fiber material; Step four: according to the ratio, mix and stir the epoxy resin, curing agent and accelerator under the temperature conditions required by the vacuum impregnation process to obtain the resin, and then vacuum degas for use; Step five: adjust the heating device to heat The temperature is 40-60°C, and the resin obtained in step 4 is injected into the molding cavity from bottom to top through the injection hole by using an injection molding device. After a certain amount of resin is injected, the exhaust hole is connected to the air compressor, and dry air or inert gas is introduced into the molding cavity through the air compressor to keep the pressure in the molding cavity at 0.5-0.6Mpa; and the pressure is maintained for 1-2 hours under the pressure holding pressure, so that the resin quickly and completely penetrates the fiber material; Step 6: After the resin completely penetrates the fiber material, the temperature of the heating device is adjusted to 140-180°C, and the resin is heated and cured for 10-15 hours; Step 7: After the resin is solidified and formed, turn off the heating device to cool the mold, remove the outer mold and the upper end cover, and then pull out the core rod to obtain the insulating rod. Step 8: Put the insulating rod into the oven for secondary curing; Step 9: Polish the outer surface of the insulating rod treated in step 8, and cut off the solid part at the lower end and the uneven part at the upper end of the insulating rod to obtain a smooth tubular insulating rod. "It can be seen from this that the traditional "direct molding" insulating tube is to solidify the semi-finished product in the mold cavity by adding a heating device inside the core rod. After curing, it is demolded and placed in an oven for secondary curing. This manufacturing method has the following shortcomings: Each insulating tube is generally about 1m long and each insulating tube is cured individually. The next one can only be produced after the glue with a length span of 1m is cured. Moreover, the next one cannot be directly injected with glue. It is necessary to wait for the residual heat from the previous mold to cool down before injecting glue. This is very time-consuming, has a long production cycle, and has low production efficiency.

[0006] There will inevitably be natural loss of heat during the curing process. Single curing will cause a portion of the heat of each insulating tube to be lost naturally during the manufacturing process, further reducing energy utilization and increasing corporate production costs.

[0007] The single curing effect is not good, and after demoulding, it needs to enter the oven for secondary curing, which increases the production process and consumes a lot of energy, further increasing the production cost of the enterprise.

[0008] A single curing mode makes it difficult to ensure that the curing conditions of each insulation tube are completely consistent (such as temperature, etc.), which will lead to poor product consistency and large fluctuations in product performance. Summary of the invention

[0009] The purpose of the present invention is to address the deficiencies in the prior art and to provide an insulating operating rod insulating tube centralized curing and drip-free vacuum dipping device and a dipping method thereof, which changes the traditional production mode of insulating tubes, realizes centralized batch curing processing of insulating tubes without dripping glue, effectively simplifies the manufacturing process, has a unique and ingenious structural design, strong self-adaptation ability, easy manufacturing implementation, low implementation cost, high automation integration, greatly improves the workshop production environment, greatly improves production efficiency, and effectively saves energy.

[0010] The present invention is achieved through the following technical solutions: A method for centralized curing and drip-free vacuum dipping of insulating operating rod insulating tubes, comprising the following steps: Step 1: prepare the hollow pipe fitting in advance, and seal and fix a glue injection component connected to the hollow pipe fitting at one end of the hollow pipe fitting; Step 2: Winding the insulating material required for preparing the insulating tube on the core rod; Step 3: Put the product of step 2 into the hollow tube of step 1; Step 4: another glue injection component connected to the hollow pipe fitting is sealed and fixedly connected to the other end of the hollow pipe fitting in step 3; Step 5: Evacuate the inner cavity of the hollow pipe and the two injection components to a vacuum condition; Step 6: Glue injection: pressure glue is injected from the glue injection port of any glue injection component, the glue enters the cavity of the hollow pipe, and the excess glue is discharged from the glue injection port of another glue injection component; Step 7: After the glue is poured, a hot-cut sealing process is performed; the two glue injection components are heated at high temperature, the glue inside the two glue injection components is solidified, and the liquid glue in the cavity of the hollow pipe is sealed; Step 8: Perform a molding and curing process; place the products of step 7 in an oven to cure the insulating tube; A positioning sleeve is fixedly provided on the injection bottom surface of the two injection components, the inner ring of the positioning sleeve is used to position the core rod, and the outer ring of the positioning sleeve is gap-matched with the hollow pipe fitting; the positioning sleeve includes a plurality of positioning protrusions which are distributed at intervals along the circumferential direction and have an arc-shaped inner wall; a glue injection groove is opened on the injection bottom surface between the two positioning protrusions and in the area of ​​the inner ring of the positioning sleeve.

[0011] Preferably, the hollow tube is placed vertically; and the glue pouring direction is from bottom to top.

[0012] An insulating operating rod insulating tube centralized curing and drip-free vacuum glue dipping device, comprising a heat sealing mechanism and a suspended tube mold; The pipe mold includes a hollow pipe and a glue injection assembly fixed at both ends of the hollow pipe, and the hollow pipe is used to accommodate a core rod wrapped with an insulating material; The heat sealing mechanism includes a positioning column; a glue overflow system for airtight communication with an upper glue injection component is provided at the top of the positioning column; an upper hot cutting component for high-temperature curing of the glue inside the upper glue injection component is fixedly provided above the positioning column; a sliding clamping mechanism for clamping and following the up and down movement of the hollow pipe is also fixedly provided on the positioning column; a glue injection system for airtight communication with the lower glue injection component is provided below the lower glue injection component, and a lower hot cutting component for high-temperature curing of the glue inside the lower glue injection component is also provided on one side of the lower glue injection component.

[0013] Preferably, the upper hot cutting component and the lower hot cutting component have the same structure, which include two heating seats that are arranged opposite to each other and are both embedded with heating rods. Contact grooves that are compatible with the surface of the glue injection component are opened on the opposite surfaces of the two heating seats, and the two heating seats are respectively fixed to the two hot cutting joint panels of the hot cutting finger cylinder; the cylinder body of the hot cutting finger cylinder is fixed to the movable plate, and side support plates fixedly connected to the hot cutting slide of the hot cutting slide cylinder are provided on both sides of the movable plate; guide rods that are gap-matched with the side support plates are fixed on both side surfaces of the movable plate, and floating springs are sleeved on the guide rods between the side surfaces of the movable plate and the side support plates; the movable plate is slidably connected to the floating slide rail fixed on the rear support plate via a floating slider, and the rear support plate is fixed to the hot cutting slide.

[0014] Preferably, after the heating seat clamps the glue injection assembly, the hot cutting slide cylinder is in a cut-off state.

[0015] Preferably, the heating seat is fixedly connected to the hot-cut joint panel via a transition connection block, and a heat-insulating pad is provided between the transition connection block and the hot-cut joint panel; The side support plate is fixedly connected to the rear support plate, and the rear support plate is fixedly connected to the hot cutting slide via a hot cutting base.

[0016] Preferably, the glue injection system is located directly below the lower glue injection component, which includes a lifting mechanism and a glue injection base plate lifted by the lifting mechanism, and the glue injection base plate supports the lower glue injection part; the lower glue injection part is provided with a glue inlet channel for sealed communication with the glue injection pipe, and an annular channel for circulating cooling water; the annular channel is sealed communication with a cooling water pipe sleeved on the periphery of the glue injection pipe.

[0017] Preferably, the sliding clamping mechanism comprises a sliding plate for fixing at least one clamping assembly, and the sliding plate is slidably connected to a large sliding rail fixed on the positioning column via a large sliding block; The clamping assembly comprises a clamping slide cylinder fixedly connected to a sliding plate, a clamping finger cylinder is fixedly provided on the slide of the clamping slide cylinder, and two joint panels of the clamping finger cylinder are respectively provided with clamping claws adapted to the surface body of the hollow pipe fitting.

[0018] Preferably, the glue overflow system is arranged directly above the upper glue injection component, and includes a lifting guide seat fixed on the positioning column and having a hollow structure; the glue overflow seat provided with a glue overflow channel is gap-matched with the lifting guide seat, and the glue overflow seat is fixed with a lower limit plate which plays a limiting role and is used to install one end of the glue overflow compression spring, and the other end of the glue overflow compression spring is limited by the upper limit plate, and the upper limit plate is fixedly supported on the lifting guide seat by an overflow support; the glue overflow seat is also provided with a cold water channel for circulating cooling water.

[0019] Preferably, one side of the glue overflow system is further provided with an anti-drip glue component fixedly connected to the positioning column; the anti-drip glue component includes a guide rod cylinder and a bracket fixed on the guide rod cylinder connecting plate.

[0020] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention has revolutionized the production mode of insulating tubes, realizing centralized one-time curing and no glue dripping during the turnover process. The glue in the two glue injection components can be solidified to lock the glue in the hollow pipe fittings. There is no glue dripping during the turnover process, and the turnover process is also a process in which the glue fully penetrates the insulating material, making efficient use of idle time and greatly improving production efficiency. At the same time, the glue-free turnover effectively avoids environmental pollution caused by glue dripping, glue waste, and unevenness of the semi-finished product surface, significantly improving the workshop production environment while reducing labor intensity.

[0021] 2. The glue in the glue injection assembly of the present invention is very small compared to the glue in the hollow pipe fitting, and the heat required for curing the glue in the glue injection assembly is relatively small, so the hot cutting curing speed is very fast and the energy consumption is very low. After the glue in the hollow pipe fitting is "sealed" by hot cutting curing, the workpieces are sent to the oven for molding and curing process; the molding and curing of the insulating tube of the present invention is only carried out once, and it is batch centralized curing, with fewer processing steps, high production efficiency, significantly reduced energy loss, and high energy utilization.

[0022] 3. The product quality of the present invention is stable and the product consistency is high; centralized curing helps to maintain the consistency of curing conditions (such as temperature, time, etc.), which is crucial to ensure the stability of the quality of the final product and reduce product performance fluctuations caused by differences in curing conditions.

[0023] 4. The vacuum dipping device of the present invention has a unique and ingenious structural design. It integrates multiple production processes such as vacuuming, glue injection, dipping, and hot cutting and blocking in one device, and at the same time solves the problem that traditional insulating tubes cannot be cured in batches. It has a high speed and significantly shortens the production cycle. It realizes the glue-free turnover and one-time centralized curing and molding of semi-finished insulating tubes, greatly improving the production efficiency of insulating tubes.

[0024] 5. The vacuum dipping device of the present invention has strong self-adaptation ability, good heat cutting effect, easy manufacturing and implementation, low implementation cost, high automation integration and high production efficiency.

[0025] 6. The products manufactured by the vacuum dipping device of the present invention have high surface smoothness and low difficulty in subsequent polishing, which effectively reduces labor intensity and further improves production efficiency; and the products produced have uniform wall thickness and high product quality.

[0026] 7. The pipe mold of the present invention can be recycled and reused, which is economical and practical, and further reduces the production cost for the enterprise.

[0027] 8. The present invention is very practical and can create significant economic benefits for enterprises. It has groundbreaking significance in the field of insulating tube manufacturing technology and has promoted the development of the industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 .

[0029] Figure 2 It is a schematic diagram of the explosion structure of the tube mold of the present invention.

[0030] Figure 3 It is a schematic diagram of the bottom direction structure of the glue injection component of the present invention.

[0031] Figure 4 It is a schematic diagram of the cross-sectional structure of the tube mold of the present invention.

[0032] Figure 5 It is a schematic diagram of the three-dimensional structure of the hot cutting component of the present invention.

[0033] Figure 6 It is a schematic diagram of the structure of the hot cutting component of the present invention when viewed from top.

[0034] Figure 7 The present invention Figure 1 Local zoom Figure 1 .

[0035] Figure 8 It is a structural schematic diagram of the glue overflow system of the present invention.

[0036] Fig. 9 The present invention Figure 1 Local zoom Figure 2 .

[0037] Fig.10 The present invention Figure 1 Local zoom Figure 3 .

[0038] Fig.11 It is a schematic diagram of the cross-sectional structure of the glue injection part, the glue injection pipe and the cooling water pipe of the present invention.

[0039] Fig.12 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 .

[0040] In the figure: 1. Tube mold; 11. Mandrel; 12. Hollow pipe fitting; 13. Upper glue injection assembly; 131. Positioning sleeve; 132. Glue injection bottom surface; 1311. Positioning protrusion; 133. Glue injection groove; 134. Glue flow channel; 14. Lower glue injection assembly; 2. Heat sealing mechanism; 21. Positioning column; 22. Glue overflow system; 221. Lifting guide seat; 222. Glue overflow seat; 2221. Glue overflow joint; 2222. Cold water channel; 2223. Seal; 223. Glue overflow compression spring; 224. Lower limit plate; 225. Upper limit plate; 226. Overflow support; 23. Upper hot cutting assembly; 24. Sliding clamping mechanism; 241. Clamping assembly; 2411. Clamping slide cylinder; 2412. Clamping finger cylinder; 2413. Clamping claw; 242. Sliding plate; 243. Large slider; 244. Large slide rail; 25. Glue injection system; 251. Lifting mechanism; 252. Glue injection bottom plate; 253. Lower glue injection part; 25 31. Glue inlet channel; 2532. Annular channel; 254. Glue filling pipe; 255. Cooling water pipe; 26. Lower hot cutting assembly; 261. Heating seat; 2611. Contact groove; 262. Hot cutting finger cylinder; 2621. Hot cutting joint panel; 263. Moving plate; 264. Hot cutting slide cylinder; 2641. Hot cutting slide; 2651. Side support plate; 2652. Rear support plate; 2653. Hot cutting base; 266. Guide rod; 2671. Floating slider; 2672. Floating slide rail; 2673. Floating spring; 2681. Transition connection block; 2682. Thermal insulation pad; 27. Anti-drip glue assembly; 271. Guide rod cylinder; 272. Bracket; 28. Conveyor rack. DETAILED DESCRIPTION

[0041] In order to enable readers to better understand the design purpose of the present invention, the technical solution of the present invention is further described in combination with the embodiments below. It should be noted that the directional nouns that may be involved in the following paragraphs, including but not limited to "up, down, left, right, front, back", etc., are based on the visual directions shown in the corresponding drawings of the specification, which should not and should not be regarded as limiting the protection scope or technical solution of the present invention. Its purpose is only to facilitate those skilled in the art to better understand the technical solution created by the present invention.

[0042] In the description of this specification, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] Example 1

[0044] A method for centralized curing and drip-free vacuum dipping of insulating operating rod insulating tubes, comprising the following steps: Step 1: Prepare the hollow tube 12 in advance, and seal and fix a glue injection component connected to the hollow tube 12 at one end of the hollow tube 12; the glue injection component is used to circulate glue, so the glue injection component will naturally have a glue circulation channel 134.

[0045] Step 2: Wind the insulating material required for preparing the insulating tube on the core rod 11; the insulating material is determined according to the type of the insulating tube, such as glass fiber material.

[0046] Step three: Load the product of step two into the hollow tube 12 of step one; the core rod 11 wrapped with insulating material and the hollow tube 12 need to be placed coaxially to ensure that the wall thickness of the molded and cured insulating tube is uniform. Of course, before the core rod 11 is loaded, the hollow tube 12 will be coated with a release agent. The glue injection component can be coated with a release agent or not according to actual needs; because the amount of glue in the glue injection component is very small, when the glue injection component needs to be recycled and reused, the solidified glue in the glue injection component can be drilled out with a drill bit.

[0047] Step 4: Another glue injection component connected to the hollow pipe 12 is sealed and fixedly connected to the other end of the hollow pipe 12 in step 3.

[0048] Step 5: Evacuate the inner cavity of the hollow pipe 12 and the two glue injection components to a vacuum condition.

[0049] Step 6: Glue injection: pressure glue injection is performed from the glue injection port of any glue injection component, the glue fully enters the cavity of the hollow pipe 12, and the excess glue is discharged from the glue injection port of another glue injection component.

[0050] Step 7: After the glue is poured, the hot-cutting blocking process is performed; the two glue injection components are heated at high temperature, the glue inside the two glue injection components is solidified, and the liquid glue in the cavity of the hollow pipe 12 is blocked; the high-temperature solidification of the glue in the glue injection component is called "hot-cutting solidification". The amount of glue inside the glue injection component is very small, the energy consumption of curing the glue inside the glue injection component is low, the curing speed is fast, and the glue blocking effect inside the hollow pipe 12 is good. This kind of blocking is called "hot-cutting blocking".

[0051] Step 8: Perform the molding and curing process, and put the products of step 7 into the oven to cure the insulation tube. Enter the oven, and perform batch curing, and only perform this molding and curing process.

[0052] This embodiment has revolutionized the production mode of insulating tubes, achieving centralized one-time curing and no glue dripping during the turnover process. The glue in the two glue injection components can be cured to lock the glue in the hollow pipe fittings. There is no glue dripping during the turnover process, and the turnover process is also a process in which the glue fully penetrates the insulating material, making efficient use of idle time and greatly improving production efficiency. At the same time, the glue-free turnover effectively avoids environmental pollution caused by glue dripping, glue waste, and unevenness of the semi-finished product surface, significantly improving the workshop production environment while reducing labor intensity.

[0053] The glue in the glue injection component of this embodiment is very small compared to the glue in the hollow pipe fitting, and the heat required for curing the glue in the glue injection component is relatively small, so the hot cutting curing speed is very fast and the energy consumption is very low. After the glue in the hollow pipe fitting is "sealed" by hot cutting curing, the workpieces are sent to the oven for molding and curing process. The molding and curing of the insulating tube of this embodiment is only carried out once, and it is batch centralized curing, with fewer processing steps, high production efficiency, significantly reduced energy loss, and high energy utilization.

[0054] The product quality of this embodiment is stable and the product consistency is high; centralized curing helps to maintain the consistency of curing conditions (such as temperature, time, etc.), which is crucial to ensuring the quality stability of the final product and reduces product performance fluctuations caused by differences in curing conditions.

[0055] Example 2

[0056] Based on Example 1, this example continues to describe in detail the technical features involved therein and the functions and roles played by the technical features in the present invention, so as to help technicians in this field fully understand the technical solution of the present invention and reproduce it.

[0057] Based on Example 1, Figures 2 to 4 As shown, a positioning sleeve 131 is fixedly provided on the bottom surface 132 of the two injection components of this embodiment, and the inner ring of the positioning sleeve 131 is used to position the core rod 11 so that the core rod 11 and the hollow pipe 12 are arranged coaxially. The outer ring of the positioning sleeve 131 is clearance-matched with the hollow pipe 12, that is, the two injection components are positioned so that the two injection components and the hollow pipe 12 also maintain a coaxial position relationship as much as possible. The positioning sleeve 131 includes a plurality of positioning protrusions 1311 distributed at intervals along the circumference and with an arc-shaped inner wall; between the two positioning protrusions 1311 and in the area of ​​the inner ring of the positioning sleeve 131, a glue injection groove 133 is provided on the bottom surface 132 of the injection. The core rod 11 is embedded in the inner ring of the positioning sleeve 131, and the spacing between the core rod 11 and the inner wall of the hollow pipe 12 is symmetrical and regular, ensuring that the wall thickness of the insulating tube is uniform after molding, effectively ensuring product quality. The design of the glue injection groove 133 ensures that the glue inside the tube mold can flow quickly, so that the insulating material on the core rod 11 is fully impregnated with glue.

[0058] In this embodiment, the hollow pipe 12 is placed vertically, and the direction of glue injection is from bottom to top. This design is also to ensure that the insulating material can be fully impregnated with glue.

[0059] The product manufactured in this embodiment has high surface smoothness and low difficulty in subsequent grinding, which effectively reduces labor intensity and further improves production efficiency; and the wall thickness of the product produced is uniform and the product quality is high.

[0060] Example 3

[0061] Based on Example 1 or Example 2, this example continues to describe in detail the technical features involved and the functions and roles played by the technical features in the present invention, so as to help technicians in this field fully understand the technical solution of the present invention and reproduce it.

[0062] like Figure 1As shown, this embodiment provides a vacuum glue dipping device for centralized curing of insulating operating rod insulating tube without glue dripping, which applies the glue dipping method described in Example 1 or Example 2, and mainly includes a heat sealing mechanism 2 and a suspended tube mold 1; wherein the tube mold 1 includes a hollow tube 12 and a glue injection assembly fixed at both ends of the hollow tube 12, and the hollow tube 12 is used to accommodate a core rod 11 wrapped with insulating material. The heat sealing mechanism 2 includes a positioning column 21; the top position of the positioning column 21 is provided with a glue overflow system 22 for sealed communication with the upper glue injection assembly 13; the glue overflow pipe of the glue overflow system 22 is connected to the glue collection container through a vacuum pump. An upper hot cutting assembly 23 for high-temperature curing of the glue inside the upper glue injection assembly 13 is fixedly provided above the positioning column 21; a sliding clamping mechanism 24 for clamping and following the up and down movement of the hollow pipe 12 is also fixedly provided on the positioning column 21; a glue injection system 25 for airtight communication with the lower glue injection assembly 14 is provided below the lower glue injection assembly 14, and a glue injection pipe 254 of the glue injection system 25 is connected to a glue injection machine with a vacuum pumping function. A lower hot cutting assembly 26 for high-temperature curing of the glue inside the lower glue injection assembly 14 is also provided on one side of the lower glue injection assembly 14. The action process of this embodiment is as follows: the pipe mold 1 to be dipped in glue moves between the glue injection system 25 and the glue overflow system 22 and is in a suspended state. At this time, the sliding clamping mechanism 24 clamps the pipe mold 1, the glue injection system 25 moves upward, and pushes the pipe mold 1 to move upward (the sliding clamping mechanism 24 follows the upward movement) until the pipe mold 1 is airtightly connected with the glue overflow system 22. Subsequently, the tube mold 1 is vacuumed in both directions using a glue filling machine and a vacuum pump, or only a glue filling machine or a vacuum pump can be used to vacuum in one direction, but the efficiency of the two-way method is higher. When the inner cavity of the tube mold 1 reaches the vacuum condition, the glue filling machine performs pressure glue injection into the inner cavity of the tube mold 1 from bottom to top through the glue injection system 25. After sufficient glue injection, the excess glue is discharged through the overflow hose of the glue overflow system 22. After the glue injection is completed, the upper hot cutting component 23 and the lower hot cutting component 26 are operated to perform high-temperature curing treatment on the small amount of glue inside the two glue injection components (that is, "hot cutting blocking" is achieved through "hot cutting curing"), so as to quickly block the glue in the hollow pipe 12. After hot cutting blocking, the idle time of the turnover can be used to allow the insulating material to be fully impregnated with glue. After the turnover is placed in the oven, the insulating tube can be centrally formed and cured at one time. Through batch centralized curing, the time of a single workpiece in the forming and curing process is reduced, making the production process more coherent, thereby greatly improving the overall production efficiency. In addition, centralized curing also reduces the energy loss of a single workpiece during the forming and curing process, and no secondary forming and curing is required.

[0063] In addition to the advantages of Embodiment 1 and Embodiment 2, this embodiment also has the following advantages: The vacuum dipping device of this embodiment has a unique and ingenious structural design, and integrates multiple production processes such as vacuuming, glue injection, dipping, and hot cutting and blocking in one device, and solves the problem that traditional insulating tubes cannot be cured in batches. It has a high speed and significantly shortens the production cycle, realizes the glue-free turnover and one-time centralized curing and molding of semi-finished insulating tubes, and greatly improves the production efficiency of insulating tubes. The pipe mold of this embodiment can be recycled and reused, which is economical and practical, and further reduces production costs for enterprises.

[0064] Example 4

[0065] Based on Example 3, this example continues to describe in detail the technical features involved and the functions and roles played by the technical features in the present invention, so as to help technicians in this field fully understand the technical solution of the present invention and reproduce it.

[0066] like Figure 5-Figure 6 As shown, the upper hot cutting component 23 and the lower hot cutting component 26 of this embodiment have the same structure, which include two heating seats 261 that are arranged opposite to each other and are both embedded with heating rods. Contact grooves 2611 that are compatible with the surface of the injection component are opened on the opposite surfaces of the two heating seats 261, and the two heating seats 261 are respectively fixed to the two hot cutting joint panels 2621 of the hot cutting finger cylinder 262; the cylinder body of the hot cutting finger cylinder 262 is fixed to the moving plate 263, and side support plates 2651 that are fixedly connected to the hot cutting slide 2641 of the hot cutting slide cylinder 264 are provided on both sides of the moving plate 263; guide rods 266 that are gap-matched with the side support plates 2651 are fixedly provided on both side surfaces of the moving plate 263, and floating springs 2673 are sleeved on the guide rods 266 between the side surfaces of the moving plate 263 and the side support plates 2651. In the absence of external force, the hot-cut finger cylinder 262 is located in the middle of the two side support plates 2651; when an external force is applied, one of the two floating springs 2673 will extend and the other will contract, and the hot-cut finger cylinder 262 will make a small movement and adjustment in the Y-axis direction. The moving plate 263 is slidably connected to the floating slide rail 2672 fixed on the rear support plate 2652 via the floating slider 2671, and the rear support plate 2652 is fixedly connected to the hot-cut slide 2641. After the heating seat 261 clamps the glue injection assembly, the hot-cut slide cylinder 264 is in a shut-off state. The hot-cut slide cylinder 264 in the shut-off state can make a small movement and adjustment in the X-axis direction if an external force is applied.

[0067] The working principle of the hot-cut assembly of this embodiment is as follows: in the initial state, the two hot-cut joint panels 2621 of the hot-cut finger cylinder 262 are in an open state. When the glue injection is completed, the hot-cut slide cylinder 264 of the lower hot-cut assembly 26 and the upper hot-cut assembly 23 are ventilated, and the hot-cut slide 2641 moves toward the pipe mold 1. After moving to the preset position, the hot-cut finger cylinder 262 is actuated, and the two hot-cut joint panels 2621 drive the heating seat 261 to clamp the glue injection assembly. In an ideal state, the contact groove 2611 will be completely in contact with the surface of the glue injection assembly, but since there will inevitably be installation errors when the two glue injection assemblies are installed with the hollow pipe fitting 12, it is impossible to be absolutely coaxial with the hollow pipe fitting 12. The existence of the error will cause the contact groove 2611 to not be completely in contact with the glue injection assembly, which will affect the hot-cut curing effect. To solve this problem, the present embodiment adopts a floating design for the upper hot cutting component 23 and the lower hot cutting component 26. After the heating seat 261 on the hot cutting finger cylinder 262 clamps the glue injection component, the hot cutting slide cylinder 264 is cut off, and the contact groove 2611 is in an arc shape. The clamping force of the two heating seats 261 on the glue injection component will drive the contact groove 2611 to completely fit the glue injection component. Since the hot cutting finger cylinder 262 is slidably connected to the floating slide rail 2672 through the floating slider 2671, and the guide rod 266 is clearance-matched with the side support plate 2651, the hot cutting finger cylinder 262 can move in the Y-axis direction to adapt to the fitting of the heating seat 261 and the glue injection component; and the stress on the X-axis is self-adapted through the sliding of the hot cutting slide 2641, because the hot cutting slide cylinder 264 is in a state of cutting off, and is subjected to external force in the X-axis direction, the hot cutting slide 2641 can slide back and forth to adapt. It can be seen that, through the floating design, the upper hot-cut component 23 and the lower hot-cut component 26 of this embodiment have self-adaptive capabilities, so that the contact groove 2611 is completely fitted with the surface of the glue injection component, effectively ensuring the efficient implementation of the hot-cut sealing process of the insulating tube.

[0068] In this embodiment, the heating seat 261 is fixedly connected to the hot joint panel 2621 via the transition connection block 2681, and a heat insulation pad 2682 is provided between the transition connection block 2681 and the hot joint panel 2621. The design of the heat insulation pad 2682 is for energy saving considerations to avoid unnecessary heat loss.

[0069] In this embodiment, the side support plate 2651 is fixedly connected to the rear support plate 2652, and the rear support plate 2652 is fixedly connected to the hot cutting slide 2641 via the hot cutting base 2653. The structural design is stable.

[0070] In addition to the advantages of Embodiment 1 and Embodiment 2, this embodiment also has the following advantages: The vacuum dipping device of this embodiment has a unique and ingenious structural design. It integrates multiple production processes such as vacuuming, glue injection, dipping, and hot cutting and blocking in one device, and at the same time solves the problem that traditional insulating tubes cannot be cured in batches. It has a high speed and significantly shortens the production cycle, and realizes the glue-free turnover and one-time centralized curing and molding of semi-finished insulating tubes, which greatly improves the production efficiency of insulating tubes.

[0071] The vacuum dipping device of this embodiment has strong self-adaptation capability, good heat cutting effect, easy manufacturing and implementation, low implementation cost, high automation integration and high production efficiency.

[0072] The pipe mold of this embodiment can be recycled and reused, which is economical and practical, and further reduces production costs for enterprises.

[0073] The vacuum impregnation device of this embodiment is very practical, can create significant economic benefits for enterprises, has groundbreaking significance in the field of insulating tube manufacturing technology, and has promoted the development of the industry.

[0074] Example 5

[0075] On the basis of the above-mentioned embodiments, this embodiment continues to describe in detail the technical features involved therein and the functions and roles played by the technical features in the present invention, so as to help technicians in this field to fully understand the technical solution of the present invention and reproduce it.

[0076] like Figure 1 , Figure 10-12 The glue injection system 25 of this embodiment is located directly below the lower glue injection assembly 14, and includes a lifting mechanism 251, and a glue injection base plate 252 lifted by the lifting mechanism 251, and a lower glue injection part 253 is supported on the glue injection base plate 252; the lower glue injection part 253 is provided with a glue inlet channel 2531 for airtight communication with the glue injection pipe 254, and an annular channel 2532 for circulating cooling water; the annular channel 2532 is airtightly connected with a cooling water pipe 255 sleeved on the outer periphery of the glue injection pipe 254. That is, the glue injection pipe 254 and the cooling water pipe 255 are designed as a large pipe sleeved with a small pipe, the glue injection pipe 254 and the glue inlet channel 2531 constitute a glue circulation path, the cooling water pipe 255 and the annular channel 2532 constitute a cooling water circulation path, the free end of the cooling water pipe 255 is the cooling water inlet end / outlet end, and the annular channel 2532 of the lower glue injection part 253 is the cooling water outlet end / inlet end. The lifting mechanism 251 is a turbine screw lifter. The structural design is reasonable and ingenious, and the low temperature is maintained in the place where the low temperature should be maintained, and the high temperature is maintained in the place where the high temperature should be maintained.

[0077] In this embodiment, the upper hot cutting component 23 is fixed on the positioning column 21 ; the lower hot cutting component 26 is fixed on the glue injection bottom plate 252 , and the lower hot cutting component 26 moves up and down following the glue injection system 25 .

[0078] like Figure 1 , Fig. 9 , Fig.12 As shown, the sliding clamping mechanism 24 of this embodiment includes a sliding plate 242 that fixes at least one clamping assembly 241, and the sliding plate 242 is slidably connected to a large slide rail 244 fixed on the positioning column 21 through a large slider 243; the clamping assembly 241 includes a clamping slide cylinder 2411 fixedly connected to the sliding plate 242, and a clamping finger cylinder 2412 is fixedly provided on the slide of the clamping slide cylinder 2411, and two joint panels of the clamping finger cylinder 2412 are respectively installed with clamping claws 2413 that are compatible with the surface of the hollow pipe 12. The sliding clamping mechanism 24 of this embodiment slides up and down with the pipe mold 1 while clamping the pipe mold 1, and the structural design is simple and easy to manufacture and implement.

[0079] like Figure 1 , Figure 7 , Figure 8 , Fig.12 As shown, the glue overflow system 22 of this embodiment is arranged just above the upper glue injection assembly 13, and includes a lifting guide seat 221 fixed on the positioning column 21 and having a hollow structure; the glue overflow seat 222 with a glue overflow channel is gap-matched with the lifting guide seat 221, and the glue overflow channel is connected to the glue overflow pipe through the glue overflow joint 2221. The glue overflow seat 222 is fixed with a lower limit plate 224 that plays a limiting role and is used to install one end of the glue overflow compression spring 223, and the other end of the glue overflow compression spring 223 is limited by an upper limit plate 225, and the upper limit plate 225 is fixedly supported on the lifting guide seat 221 by an overflow support 226; the glue overflow seat 222 is also provided with a cold water channel 2222 for circulating cooling water. When the lifting mechanism 251 of the glue injection system 25 does not make a lifting movement upward, under the action of the glue overflow compression spring 223, the glue overflow seat 222 falls, and the upper limit plate 225 contacts the lifting guide seat 221. When the lifting mechanism 251 makes a lifting movement upward, the overflow glue seat 222 moves upward, and the overflow glue compression spring 223 contracts. Since the overflow glue seat 222 is very close to the heating seat 261 and the upper glue injection component 13, in order to avoid the glue in the overflow glue channel of the overflow glue seat 222 from solidifying, this embodiment is designed with a cold water channel 2222 for circulating cooling water on the overflow glue seat 222. In addition to having the function of recovering excess glue, the glue overflow system 22 of this embodiment also has a buffering function, which effectively avoids the rigid impact force of the lifting mechanism 251 on the glue overflow system 22. The glue inlet head of the overflow glue seat 222 and the glue outlet head of the lower glue injection component 253 are both covered with a seal 2223, and the design of the seal 2223 facilitates the airtight cooperation between the glue head and the glue injection component.

[0080] The pipe mold 1 of this embodiment is suspended by a conveying frame 28 on the assembly line.

[0081] like Figure 1 and Fig.12As shown, one side of the glue overflow system 22 of this embodiment is also provided with an anti-drip glue component 27 fixed to the positioning column 21; the anti-drip glue component 27 includes a guide rod cylinder 271 and a bracket 272 fixed on the connecting plate of the guide rod cylinder 271. After the molding and curing is completed, the jacking mechanism 251 moves downward, and the tube mold 1 naturally moves downward with the jacking mechanism 251 under the action of gravity until it is lifted by the conveying rack 28. The glue in the overflow glue seat 222 is liquid. In order to prevent the glue from dripping, when the tube mold 1 is away from the overflow glue seat 222, the guide rod cylinder 271 of the anti-drip glue component 27 starts to move, pushing the bracket 272 to the bottom of the overflow glue seat 222, so as to receive the glue that may drip.

[0082] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. All equivalent changes and modifications in the shape, structure, characteristics and spirit of the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A method for centralized curing and drip-free vacuum dipping of insulating operating rod insulating tubes, characterized in that: The steps include: Step 1: prepare the hollow pipe (12) in advance, and seal and fix a glue injection component connected to the hollow pipe (12) at one end of the hollow pipe (12); Step 2: Winding the insulating material required for preparing the insulating tube on the core rod (11); Step 3: Place the product of step 2 into the hollow tube (12) of step 1; Step 4: another glue injection component connected to the hollow pipe (12) is sealed and fixedly connected to the other end of the hollow pipe (12) in step 3; Step 5: evacuate the hollow tube (12) and the inner cavities of the two injection components to a vacuum condition; Step 6: Glue injection: pressure glue injection is performed from the glue injection port of any glue injection component, the glue enters the cavity of the hollow pipe (12), and the excess glue is discharged from the glue injection port of another glue injection component; Step 7: After the glue is injected, a hot-cut sealing process is performed; the two glue injection components are heated at high temperature, the glue inside the two glue injection components is solidified, and the liquid glue in the cavity of the hollow pipe (12) is sealed; Step 8: Perform a molding and curing process; place the products of step 7 in an oven to cure the insulating tube; A positioning sleeve (131) is fixedly provided on the injection bottom surface (132) of the two injection components, the inner ring of the positioning sleeve (131) is used to position the core rod (11), and the outer ring of the positioning sleeve (131) is clearance-matched with the hollow pipe (12); the positioning sleeve (131) comprises a plurality of positioning protrusions (1311) which are spaced apart in the circumferential direction and have an arc-shaped inner wall; and a glue injection groove (133) is provided on the injection bottom surface (132) between the two positioning protrusions (1311) and in the area of ​​the inner ring of the positioning sleeve (131).

2. The centralized curing and drip-free vacuum dipping method for insulating operating rod insulating tubes according to claim 1 is characterized in that: The hollow tube (12) is placed vertically; the glue pouring direction is from bottom to top.

3. A vacuum glue dipping device for centralized curing of insulating operating rod and insulating tube without glue dripping, characterized in that: It comprises a heat sealing mechanism (2) and a suspended tube mold (1); The pipe mold (1) comprises a hollow pipe (12) and glue injection components fixed at both ends of the hollow pipe (12), and the hollow pipe (12) is used to accommodate a core rod (11) wound with an insulating material. The heat sealing mechanism (2) comprises a positioning column (21); a glue overflow system (22) for being in airtight communication with an upper glue injection component (13) is provided at the top of the positioning column (21); an upper hot cutting component (23) for high-temperature curing glue inside the upper glue injection component (13) is fixedly provided above the positioning column (21); a sliding clamping mechanism (24) for clamping and following the up and down movement of the hollow pipe (12) is also fixedly provided on the positioning column (21); a glue injection system (25) for being in airtight communication with the lower glue injection component (14) is provided below the lower glue injection component (14); and a lower hot cutting component (26) for high-temperature curing glue inside the lower glue injection component (14) is also provided on one side of the lower glue injection component (14).

4. The centralized curing and drip-free vacuum dipping device for insulating operating rod insulating tubes according to claim 3 is characterized in that: The upper hot cutting component (23) and the lower hot cutting component (26) have the same structure, and include two heating seats (261) arranged opposite to each other and each of which is embedded with a heating rod. The opposite surfaces of the two heating seats (261) are provided with contact grooves (2611) adapted to the surface of the injection component. The two heating seats (261) are respectively fixedly connected to two hot cutting joint panels (2621) of the hot cutting finger cylinder (262). The cylinder body of the hot cutting finger cylinder (262) is fixedly connected to the moving plate (263). The moving plate (263) is provided with a hot cutting slide table (264) on both sides thereof. 641) is fixedly connected to a side support plate (2651); guide rods (266) with a clearance fit with the side support plate (2651) are fixedly provided on both side surfaces of the movable plate (263), and a floating spring (2673) is sleeved on the guide rod (266) between the side surface of the movable plate (263) and the side support plate (2651); the movable plate (263) is slidably connected to a floating slide rail (2672) fixed on the rear support plate (2652) via a floating slider (2671), and the rear support plate (2652) is fixedly connected to the hot cutting slide table (2641).

5. The centralized curing and drip-free vacuum dipping device for insulating operating rod insulating tubes according to claim 4 is characterized in that: After the heating seat (261) clamps the glue injection assembly, the hot-cutting slide cylinder (264) is in a shut-off state.

6. The centralized curing and drip-free vacuum glue dipping device for insulating operating rod insulating tubes according to claim 4 is characterized in that: The heating seat (261) is fixedly connected to the hot-cut joint panel (2621) via a transition connection block (2681), and a heat insulation pad (2682) is provided between the transition connection block (2681) and the hot-cut joint panel (2621); The side support plate (2651) is fixedly connected to the rear support plate (2652), and the rear support plate (2652) is fixedly connected to the hot cutting slide (2641) via a hot cutting base (2653).

7. The centralized curing and drip-free vacuum glue dipping device for insulating operating rod insulating tubes according to claim 3 is characterized by: The glue injection system (25) is located directly below the lower glue injection assembly (14), and comprises a lifting mechanism (251) and a glue injection base plate (252) lifted by the lifting mechanism (251); a lower glue injection component (253) is supported on the glue injection base plate (252); the lower glue injection component (253) is provided with a glue inlet channel (2531) for being in airtight communication with a glue injection pipe (254), and an annular channel (2532) for circulating cooling water; the annular channel (2532) is in airtight communication with a cooling water pipe (255) sleeved on the periphery of the glue injection pipe (254).

8. The centralized curing and drip-free vacuum dipping device for insulating operating rod insulating tubes according to claim 3 is characterized in that: The sliding clamping mechanism (24) comprises a sliding plate (242) for fixing at least one clamping assembly (241); the sliding plate (242) is slidably connected to a large sliding rail (244) fixed on the positioning column (21) via a large sliding block (243); The clamping assembly (241) comprises a clamping slide cylinder (2411) fixedly connected to a sliding plate (242); a clamping finger cylinder (2412) is fixedly provided on the slide of the clamping slide cylinder (2411); and two joint panels of the clamping finger cylinder (2412) are respectively provided with clamping claws (2413) adapted to the surface of the hollow pipe (12).

9. The centralized curing and drip-free vacuum dipping device for insulating operating rod insulating tubes according to claim 3 is characterized by: The glue overflow system (22) is arranged directly above the upper glue injection assembly (13), and comprises a lifting guide seat (221) fixed on the positioning column (21) and having a hollow structure; the glue overflow seat (222) having a glue overflow channel is gap-matched with the lifting guide seat (221); the glue overflow seat (222) is fixedly connected with a lower limit plate (224) having a limit function and used to install one end of the glue overflow compression spring (223); the other end of the glue overflow compression spring (223) is limited by an upper limit plate (225); the upper limit plate (225) is fixedly supported on the lifting guide seat (221) by an overflow support (226); the glue overflow seat (222) is also provided with a cold water channel (2222) for circulating cooling water.

10. The centralized curing and drip-free vacuum glue dipping device for insulating operating rod insulating tubes according to claim 3 or 9, characterized in that: One side of the glue overflow system (22) is also provided with an anti-drip glue component (27) fixedly connected to the positioning column (21); the anti-drip glue component (27) includes a guide rod cylinder (271) and a bracket (272) fixed on a connecting plate of the guide rod cylinder (271).

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