A basin type insulator initial demolding force measuring mold and testing device

Abstract

The utility model provides a kind of initial demolding force measuring mould and testing arrangement of pot type insulator, including forming structure, isolation component, connecting component, force measurement panel and structure fixed unit, wherein, isolation component is enclosed on the pouring area of force measurement panel upper surface, forming structure is set outside isolation component, forming structure, force measurement panel are detachably fixed by structure fixed unit;Connecting component is set at the top of forming structure, one end is set connection structure for the connection of workpiece and demolding force measuring equipment, and the other end is set fixing device for fixing in the workpiece solidified in pouring area. Solve the existing gas insulated metal-enclosed switch (GIS) in the demolding process of pot type insulator, demolding force measurement is difficult, and demolding energy loss is too large and other problems.

Description

Technical Field

[0001] This utility model belongs to the field of demolding force measurement technology, and relates to a mold and testing device for measuring the initial demolding force of a basin-type insulator. Background Technology

[0002] As voltage levels in power systems continue to rise, the requirements for high-voltage switchgear technology are also constantly increasing. In modern power systems, gas-insulated metal-enclosed switchgear (GIS) is a type of high-voltage switchgear, with the basin-type insulator serving as the supporting component. It primarily functions as an isolation chamber, conductor support, and arc-extinguishing insulation, playing a crucial role in the safe and stable operation of the equipment. However, in the manufacturing process of basin-type insulators, the on-site demolding process typically relies on workers using tools to hammer the insulators. The magnitude of the force applied in this process often lacks clear quantification and involves many uncontrollable factors. Therefore, adopting automated demolding devices can not only effectively reduce the labor intensity of operators and improve production efficiency but also enhance product quality and yield, undoubtedly representing the future development trend of basin-type insulator manufacturing technology.

[0003] Existing pot-type insulator demolding machines mainly employ ejection mechanisms for automatic demolding (e.g., published patents CN206947062 U, CN 103009533 A, CN 206426321 U, CN 116803658 A). However, if appropriate demolding pressure parameters are not determined during workpiece ejection, improper demolding force may lead to workpiece damage or incomplete demolding. This not only affects product quality but may also cause additional time and economic losses in subsequent production stages. Therefore, matching appropriate demolding force parameters can not only ensure workpiece quality and optimize production efficiency but also effectively shorten demolding time, reduce energy consumption, and extend mold life.

[0004] Demolding force refers to the force required to push (or pull) the plastic part out of the core or cavity after the mold is opened. The resistance that needs to be overcome at the moment of demolding is the greatest, which is called the initial demolding force; the demolding force required thereafter is smaller, which is called the subsequent demolding force. In practical applications, the initial demolding force plays a dominant role. That is, by determining the magnitude of the initial demolding force, the maximum demolding force that the automatic demolding device should apply can be determined. Therefore, determining the initial demolding force has important practical significance (Reference: Shi Qihao. Research on demolding machine for epoxy casting mold of basin insulator [D]. Mechanical and Electronic Engineering, Chang'an University, 2013.).

[0005] Given the diverse types, sizes, and shapes of basin-type insulators, it is difficult to obtain demolding force data for all types and models. This results in a lack of key parameters in the design of automatic demolding machines, severely hindering the development of this technology. To achieve accurate measurement of demolding force and improve the stability and efficiency of the automatic demolding process, it is urgent to develop a component capable of accurately measuring demolding force, thereby enhancing the controllability and stability of the production process.

[0006] Furthermore, from a safety perspective, obtaining demolding force parameters is equally crucial for the automatic demolding device. Common demolding methods in automatic demolding technology include pneumatic, hydraulic, and mechanical ejection mechanisms. Without demolding force parameters as a basis, it is impossible to diagnose whether the demolding process is proceeding normally. Excessive load can easily cause deformation and surface damage to the workpiece and equipment. Therefore, obtaining demolding force parameters is also an important guarantee for the safe operation of the automatic demolding device. Utility Model Content

[0007] This invention proposes a mold and testing device for measuring the initial demolding force of a basin-type insulator, which effectively solves the problems of missing initial demolding force parameters, difficulty in determining the applied load, and excessive demolding energy loss in the existing automatic demolding devices for basin-type insulators of gas-insulated metal-enclosed switches, thereby improving the accuracy and controllability of the automatic demolding process.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a mold for measuring the initial demolding force of a basin-type insulator, comprising a molding structure, an isolation component, a connecting component, a force measuring panel, and a structural fixing unit. The isolation component forms a casting area on the upper surface of the force measuring panel, and the molding structure is set outside the isolation component. The molding structure and the force measuring panel are detachably fixed by the structural fixing unit. The connecting component is set on the top of the molding structure, with a connecting structure at one end for connecting the workpiece to the demolding force measuring device, and a fixing device at the other end for fixing it in the workpiece that has solidified in the casting area.

[0009] Furthermore, the isolation component is a silicone septum, the molding structure is a mold frame, the force measuring panel is a mold base plate, the silicone septum is set in the mold frame, the mold base plate is set at the bottom of the mold frame, and is fixed by a structural fixing unit.

[0010] Furthermore, the silicone septum has an annular structure with a flange. The inside of the annulus is used to measure the casting and molding of the workpiece, and the outside of the annulus contacts the mold frame. The flange is clamped between the mold frame and the mold base plate for fixation.

[0011] Furthermore, the structural fixing unit consists of multiple fixing screws, and the molded structure and force measuring panel are detachably fixed by the multiple fixing screws.

[0012] Furthermore, the connecting components include a mold cover and an insert. The mold cover is positioned on top of the molding structure and matches the dimensions of the molding structure. One end of the insert is detachably fixed in the central hole of the mold cover, and the other end of the insert is provided with a fixing device for fixing in the workpiece during the workpiece curing process. The fixing device is a hexagonal protruding structure, and the protruding direction of the hexagonal protruding structure is parallel to the surface of the mold cover.

[0013] Furthermore, one end of the insert is detachably fixed to the center hole of the mold cover by threads.

[0014] Furthermore, a wear-resistant and viscosity-reducing coating is provided on the side of the force measurement panel that contacts the workpiece.

[0015] Furthermore, the wear-resistant and viscosity-reducing coating is a polytetrafluoroethylene layer.

[0016] Furthermore, the demolding force measuring device is a tensile / compressive force sensor.

[0017] This utility model also includes a basin-type insulator initial demolding force testing device, which uses the above-mentioned basin-type insulator initial demolding force measuring mold to obtain the workpiece to be tested, the workpiece to be tested being a force measuring panel and a solidified workpiece thereon; The testing device also includes a tension / compression sensor and a fixing device. The fixing device is used to fix the force measuring panel, and the tension / compression sensor is used to connect with the connecting structure to detect the initial demolding force between the force measuring panel and the workpiece.

[0018] Compared with the prior art, the present invention has at least the following beneficial effects: This invention provides a mold for measuring the initial demolding force of a basin-type insulator. An isolation component forms a casting area on the force measurement panel, providing precise space for workpiece casting. The molding structure is located outside the isolation component and is detachably fixed to the force measurement panel via a structural fixing unit. This detachable design facilitates mold assembly, disassembly, and maintenance, improving the mold's flexibility and convenience while reducing operational difficulty and time costs. A connecting component is located on top of the molding structure. One end connects the workpiece solidified in the casting area to the demolding force measuring device, while the other end is fixed within the solidified workpiece in the casting area, enabling the detection of the workpiece's demolding force. This mold allows the solidified workpiece in the casting area to contact the mold only at its bottom surface. Before testing, simply loosen the structural fixing unit (fixing screws) between the isolation component (mold frame) and the force measurement panel (mold base plate), remove the molding structure, and peel off the isolation component to obtain the sample to be tested. The operation is convenient and efficient. Moreover, the maximum tensile force measured directly in the test is the initial demolding force between the workpiece and the mold. By combining the contact area between the force measurement panel and the workpiece, the magnitude of the initial demolding force per unit area can be easily calculated, realizing efficient and accurate measurement of demolding force. This effectively solves the problem of difficulty in measuring the initial demolding force during the demolding process of existing gas-insulated metal-enclosed switch (GIS) basin insulators, and improves the accuracy and controllability of the automatic demolding process.

[0019] Furthermore, the polytetrafluoroethylene (PTFE) coating thermally sprayed onto the mold base plate surface can reduce the tensile impact on the mold and workpiece during demolding while ensuring effective demolding. For the demolding device, less tensile impact means less stress on the mechanical components, thereby reducing wear and tear, extending the device's service life, reducing the frequency of maintenance and component replacement, and further reducing production costs. In addition, solid coatings have the advantage of being reusable compared to traditional liquid release agents, reducing the number of steps in demolding technology and simplifying the operation of automated control devices. Attached Figure Description

[0020] Figure 1 This is a front view of the mold for measuring the demolding force according to this utility model; Figure 2 This is a top view of the mold cover of the mold for measuring the demolding force according to this utility model; Figure 3 This is a top view of the silicone spacer of the mold for measuring the release force of this utility model. Figure 4 This is a top view of the mold frame of the mold for measuring the demolding force according to this utility model; Figure 5 This is a top view of the mold base plate of the mold for measuring the demolding force of this utility model; Figure 6 A comparison chart of the release force test results for different release agents; Figure 7 This is a picture of a sample used in a test of the release force of a polytetrafluoroethylene (PTFE) release agent. Figure 8 The tensile-displacement curve for testing the release force of polytetrafluoroethylene release agent.

[0021] In the diagram: 1. Mold top cover; 2. Silicone spacer; 3. Mold middle frame; 4. Mold bottom plate; 5. Insert; 6. Fixing screw. Detailed Implementation

[0022] The utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0023] like Figures 1 to 5 This utility model provides a mold for measuring the initial demolding force of a basin-type insulator, including a mold frame 3, which determines the final shape of the workpiece after molding. To ensure effective isolation between the workpiece and the frame, a silicone septum 2 is added inside the mold frame 3. This septum is designed to be peeled off from the workpiece before demolding force testing, so that only the mold base plate 4 contacts the workpiece during testing. This allows the magnitude of the initial demolding force per unit area to be obtained. After obtaining this parameter, the initial demolding force of any type and model of basin-type insulator mold can be calculated through mathematical derivation.

[0024] The top of the mold frame 3 is equipped with a mold cover 1, with an insert 5 embedded in the center of the mold cover 1. The mold cover 1 does not contact the workpiece during the curing process, thus avoiding interference with the workpiece forming process. Below the mold frame 3 is a mold base plate 4. The mold frame 3 and the mold base plate 4 are connected and fixed by four bolts. The force measured during the demolding force test is the adhesion force between the mold base plate 4 and the workpiece. The silicone septum 2 has an annular structure with a flange. The inside of the annulus is used to measure the casting and molding of the workpiece, while the outside of the annulus is used to contact the mold frame. The flange is fixed between the mold frame 3 and the mold base plate 4, serving to seal the raw material. The mold base plate 4 contacts the workpiece surface, and the surface of the mold base plate 4 in contact with the workpiece is coated with a wear-resistant and anti-adhesion coating.

[0025] Furthermore, an insert 5 for testing demolding force is fixed at the center hole of the mold cover 1. One end of the insert 5 is detachably fixed in the center hole of the mold cover 1, and the other end of the insert 5 is provided with a fixing device, which is used to be fixed in the workpiece when the workpiece is solidified. More preferably, one end of the insert 5 can penetrate through the central hole of the mold cover 1, and the other end of the insert 5 is threadedly connected to the central hole of the mold cover 1. Rotating the insert 5 can adjust the position of the fixing device on the insert 5, thereby controlling the depth of the fixing device embedded in the workpiece. After the workpiece is formed, the mold cover 1 is removed. During testing, the insert 5 is connected to the tension and compression sensor through the thread to apply the load and measure the demolding force.

[0026] More preferably, the fixing device is a hexagonal protruding structure with the protruding direction parallel to the surface of the mold cover 1. This hexagonal protruding structure will be solidified in the workpiece together with it during the workpiece solidification process. In a further preferred embodiment, the mold base plate 4, the mold middle frame 3, and the silicone spacer 2 are connected and fixed by four fixing screws 6 to ensure that good molding accuracy can be maintained during actual operation.

[0027] Preferably, the wear-resistant and viscosity-reducing coating can be a polytetrafluoroethylene (PTFE) layer, which is applied to the surface of the mold base plate 4 using thermal spraying technology. PTFE possesses excellent temperature resistance, corrosion resistance, and low friction properties, enabling superior demolding performance and significantly improving the automation level of basin-type insulator production. Firstly, from a coating process perspective, the PTFE coating process allows for control of the coating thickness and can be programmed for automatic spraying. Furthermore, the PTFE coating is reusable, reducing the need for applying release agent during each workpiece fabrication and demolding process. This reduces the number of steps, lowers the complexity of automated demolding devices, and improves the efficiency of automated demolding, laying a solid foundation for the development of automated demolding technology.

[0028] This invention simplifies the mold structure and, through ingenious design, ensures that only the bottom surface of the workpiece contacts the mold. Before testing, simply loosen the fixing screws between the mold frame and the mold base plate, remove the mold frame, and peel the silicone spacer off the workpiece to obtain the test sample of the workpiece and the mold base plate bonded together. The tensile force measured during the test is the demolding force between the workpiece and the mold. The demolding force per unit area can be calculated based on the contact area between the mold base plate and the workpiece. This design achieves efficient and accurate measurement of demolding force and meets the requirements for effectiveness on different types and models of basin insulator molds.

[0029] The specific steps for using this utility model mold are as follows: Step 1: Raw material pretreatment: The epoxy resin and curing agent are preheated to a preset temperature, then solid ceramic powder is added and stirred until uniformly mixed to obtain a mixture. The mixture is then subjected to vacuum degassing to eliminate internal air bubbles before use. It should be noted that the demolding force testing mold provided by this invention is suitable for demolding force testing of all cast-molded workpieces, including injection molded parts.

[0030] Step 2: Mold Assembly First, place the mold base plate 4 on a flat surface. Place the silicone spacer 2 in the center of the mold base plate 4 to form a mixture pouring area. Then, put the mold outer frame 3 on the silicone spacer 2, align the screw holes between the mold outer frame 3 and the mold base plate 4, and finally install and tighten all four fixing screws 6 to complete the mold assembly.

[0031] Step 3: Workpiece forming The mixture obtained in step one is poured into the preheated mold assembled in step two. Then, the insert 5 is inserted into the mold cover 6. The length of the insert 5 extending into the mixture pouring area is adjusted by the thread. After the adjustment is appropriate, the mold cover 1 is moved onto the mold frame 3. The fixing device of the insert 5 will extend into the mixture that is still in liquid state. Place the mold with the mixed materials and assembled into an oven and pre-cur the mixture according to a three-stage gradual heating and curing process.

[0032] Note: Do not fill the mold with too much mixed material, to avoid it sticking to the top cover during molding and becoming impossible to remove; Step 4: Demolding force measurement After curing and cooling to room temperature in step three, unscrew the mold top cover 1 from the insert 5, then remove the connecting bolts 6 between the mold middle frame 3 and the mold base plate 4. The mold middle frame 3 can then be removed. Gently peel the silicone spacer 2 from the workpiece, thus obtaining the workpiece with the insert 5 in contact with the mold base plate 4. Fix the workpiece with the base plate 4 and insert 5 onto the tension / compression sensor. During testing, the mold base plate 4 can be fixed to the lower clamp of the tension / compression sensor using a G-clamp. The workpiece is then fixed to the upper clamp of the tension / compression sensor via the threaded upper end of the insert 5 (exposed to the workpiece). Figure 7 In this way, the tension between the workpiece and the mold base plate 4 can be measured on the tension and compression sensor. By dividing this force by the contact area between the workpiece and the mold base plate, the demolding force per unit area can be obtained.

[0033] Example 1: This utility model provides a mold for measuring the initial demolding force of a basin-type insulator, including a mold frame 3, a mold top cover 1, a mold bottom plate 4, a silicone spacer 2, an insert 5, and fixing screws 6, wherein: The mold frame 3, made of aluminum alloy, determines the final shape and contour of the molded workpiece. A silicone spacer 2, made of nitrile rubber and 3mm thick, is installed inside the mold frame 3 to ensure effective isolation between the workpiece and the frame, preventing adhesion during demolding. A mold cover 1, made of stainless steel, is located on top of the mold frame 3, with an insert 5 embedded in its center. The mold cover 1 does not contact the workpiece during curing, thus avoiding interference with the molding process. A mold base plate 4 is located below the mold frame 3. The mold frame 3 and mold base plate 4 are connected and fixed by four M6×15mm bolts. The mold base plate 4 is made of aluminum alloy, and a 10μm thick polytetrafluoroethylene layer is coated on its surface using thermal spraying technology.

[0034] Insert 5 is made of stainless steel. One end is threaded into the center hole of the mold cover 1, and the other end has a hexagonal protruding fixing device. The fixing device is an external hexagonal bolt head structure with a height of 8mm. Insert 5 is connected to the center hole of the mold cover 1 by an M12×1.5mm thread, and can be adjusted by rotating insert 5.

[0035] The mold base plate 4, the mold middle frame 3, and the silicone spacer 2 are connected and fixed by four M6×15mm fixing screws 6 to ensure good molding accuracy during actual operation.

[0036] Preferably, the mold base plate 4 is thermally sprayed with a polytetrafluoroethylene (PTFE) coating on the surface in contact with the workpiece. The coating has good anti-stick properties, effectively reducing the adhesion between the mold and the workpiece, reducing energy loss and greatly reducing the scrap rate of the workpiece. The coating improves the resistance to acids and alkalis, organic solvents and high temperature, enabling the mold to be used stably for a long time in harsh chemical environments. The process of the PTFE coating can control the coating thickness and can be programmed to spray automatically, eliminating the need for manual application and thus preventing uneven coating.

[0037] Example 2: This utility model provides a mold for measuring the initial demolding force of a basin-type insulator, the main parameters of which are as follows: Mold frame 3 dimensions: outer diameter 100mm, inner diameter 80mm, height 60mm, flange outer diameter 150mm, flange thickness 8mm; Mold cover 1 dimensions: outer diameter 120mm, inner diameter 100mm, thickness 10mm; Mold base plate 4 dimensions: diameter 150mm, thickness 8mm; Silicone spacer 2 dimensions: 80mm diameter, 3mm thickness; Insert 5: Length 50mm, Hexagonal protrusion height 8mm; Fixing screw 6 specification: M6×15mm; The thread specification of insert 5 and the center hole of mold cover 1 is M12×1.5mm; Coating thickness on mold base plate 4: 10μm.

[0038] The same mold assembly, material preparation, workpiece casting, mold disassembly, and demolding force testing methods were used as in Example 1. However, different types of demolding agents were applied to the mold base plate 4 to compare the demolding effects of different demolding agents by measuring the magnitude of the demolding force. The type of demolding agent used for comparison was atomized silicone oil demolding agent. In addition, a mold base plate that was not treated with demolding agent was selected for demolding effect comparison.

[0039] Implementation effect verification Workpieces with three different mold base plates were cast. The demolding force between the mold and the workpiece, coated with different release agents, was measured using a JLBS-1 type S-type tensile and compressive sensor to evaluate the demolding effect of different release agents. The four mold base plates were: an untreated steel mold base plate, a steel mold base plate coated with atomized silicone oil release agent, and a steel mold base plate coated with polytetrafluoroethylene (PTFE). Subsequently, the adhesion force between the mold base plate and the workpiece was tested using the tensile and compressive sensor. The results showed that the adhesion force between the untreated steel mold base plate and the workpiece was 306.153 N, while the adhesion force between the steel mold base plate coated with silicone oil release agent and the workpiece was 122.371 N, and the demolding force of the PTFE-coated mold base plate was 4.968 N. Figure 6 As shown.

[0040] Experimental results show that the PTFE coating has the best demolding effect, significantly reducing the initial demolding force of the basin insulator. Furthermore, from the perspective of automated demolding technology, the PTFE coating allows for controllable coating thickness and can be programmed for automatic spraying, eliminating the need for manual application and preventing uneven coating. Moreover, the coating is reusable, reducing operational steps and simplifying the operation of automated control devices. The demolding force-displacement curve of the PTFE coating is shown below. Figure 8 As shown in the figure, the measurement results indicate that the initial release force is 4.968 N. The curve shows a relatively gradual increase before the workpiece peels off from the mold wall, while the tensile force value decreases rapidly after the workpiece peels off the mold surface. This release force characteristic demonstrates that using PTFE release agent can reduce the tensile impact on the mold and workpiece during the demolding process while ensuring effective demolding. For demolding devices, lower tensile impact means reduced stress on the mechanical components, thereby reducing wear and tear, extending the device's service life, reducing the frequency of maintenance and component replacement, and further lowering production costs.

[0041] Therefore, those skilled in the art can implement this utility model based on the above solution, which can meet the requirements of intelligent demolding of key GIS components, accurately measure demolding force, and greatly reduce demolding resistance.

[0042] Example 3 This embodiment provides a device for measuring the initial demolding force of a basin-type insulator. The device is pre-set with a demolding force measuring mold as described in Embodiment 1 to measure the demolding force data. Based on the demolding mold provided by this invention, the device performs the following steps in the demolding force measurement operation: Step 1: Fix the mold base plate. Secure the flange of the mold base plate using G-clamps or elbow clamps or other fixing components. Step 2: Fix the mold cover, and then use a clamp to fix the mold cover to the cover removal mechanism; Step 3: Mold top cover removal. The mold top cover is removed by rotation, resulting in a workpiece bonded to the mold base plate. Step 4: Peel off the silicone spacer. Use a plastic pry bar to peel the silicone spacer off the workpiece. The movements should be small throughout the process to avoid prematurely detaching the workpiece from the mold base plate.

[0043] Step 5: Insert clamping, using a screw mechanism to screw the front fixing head of the tension application device into the mold insert; Step Six: Initial Demolding Force Measurement and Application. Tension is applied using a JLBS-1 type S-type tension / compression sensor. The displacement speed must be kept slow. The demolding force measuring device automatically records the tension-displacement curve. By reading the highest point on the curve (i.e., the peak tension), the initial demolding force of the dedicated demolding force measuring mold can be determined. Dividing this value by the contact area between the mold base plate and the workpiece yields the initial demolding force per unit area. When applied to other types and models of basin-type insulator molds, the initial demolding force can be calculated by multiplying the initial demolding force per unit area by the actual contact area and relevant correction factors.

Claims

1. A mold for measuring the initial demolding force of a basin-type insulator, characterized in that, It includes a molding structure, an isolation component, a connecting component, a force measuring panel, and a structural fixing unit. The isolation component forms a casting area on the upper surface of the force measuring panel, and the molding structure is set outside the isolation component. The molding structure and the force measuring panel are detachably fixed by the structural fixing unit. The connecting component is set on the top of the molding structure. One end is provided with a connecting structure for connecting the workpiece to the demolding force measuring device, and the other end is provided with a fixing device for fixing it in the workpiece that has solidified in the casting area.

2. The initial demolding force measuring mold for a basin-type insulator according to claim 1, characterized in that, The isolation component is a silicone septum (2), the molding structure is a mold frame (3), the force measuring panel is a mold base plate (4), the silicone septum (2) is set in the mold frame (3), the mold base plate (4) is set at the bottom of the mold frame (3), and is fixed by a structural fixing unit.

3. The initial demolding force measuring mold for a basin-type insulator according to claim 2, characterized in that, The silicone septum (2) is an annular structure with a flange. The inside of the annular structure is used to measure the casting and molding of the workpiece. The outside of the annular structure is in contact with the mold frame (3). The flange is sandwiched between the mold frame (3) and the mold base plate (4) for fixing and sealing.

4. The initial demolding force measuring mold for a basin-type insulator according to claim 1, characterized in that, The structural fixing unit consists of multiple fixing screws (6), and the molded structure and force measurement panel can be detachably fixed by multiple fixing screws (6).

5. The initial demolding force measuring mold for a basin-type insulator according to claim 1, characterized in that, The connecting assembly includes a mold cover (1) and an insert (5). The mold cover (1) is set on top of the molding structure and matches the size of the molding structure. One end of the insert (5) is detachably fixed in the center hole of the mold cover (1), and the other end of the insert (5) is provided with a fixing device, which is used to be fixed in the workpiece when the workpiece is solidified. The fixing device is a hexagonal protrusion structure, and the protrusion direction of the hexagonal protrusion structure is parallel to the surface of the mold cover (1).

6. The initial demolding force measuring mold for a basin-type insulator according to claim 5, characterized in that, One end of the insert (5) is detachably fixed in the center hole of the mold cover (1) by a thread.

7. The initial demolding force measuring mold for a basin-type insulator according to claim 1, characterized in that, The force measurement panel has a wear-resistant and viscosity-reducing coating on the side that contacts the workpiece.

8. The initial demolding force measuring mold for a basin-type insulator according to claim 7, characterized in that, The wear-resistant and viscosity-reducing coating is a polytetrafluoroethylene layer.

9. The initial demolding force measuring mold for a basin-type insulator according to claim 1, characterized in that, The demolding force measuring device is a tensile and compressive force sensor.

10. A device for testing the initial demolding force of a basin-type insulator, characterized in that, The workpiece to be tested is prepared by using a basin-type insulator initial demolding force measuring mold according to any one of claims 1 to 9. The workpiece to be tested is a force measuring panel and a solidified workpiece thereon. The testing device also includes a tension / compression sensor and a fixing device. The fixing device is used to fix the force measuring panel, and the tension / compression sensor is used to connect with the connecting structure to detect the initial demolding force between the force measuring panel and the workpiece.

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