Pressing device for mineral insulation heating cable knob insulator production

Abstract

The invention relates to the field of cable knob insulator pressing, in particular to a pressing device for mineral insulation heating cable knob insulator production, which comprises a processing table and a lower mold fixedly mounted on the processing table, guide columns which are symmetrically arranged are further fixed on the processing table, and a fixing plate is fixed at one end, deviating from the processing table, of each guide column; the lifting assembly is arranged on the fixing plate, an elastic press-fit mechanism is arranged on the lifting assembly, an upper mold matched with the lower mold is connected to the elastic press-fit mechanism, and the lifting assembly can drive the upper mold to move in the direction close to or away from the lower mold through the elastic press-fit mechanism; and the temperature control follow-up mechanism is arranged on the elastic press-fit mechanism, the temperature control follow-up mechanism is further provided with a strength regulation and control assembly connected with the elastic press-fit mechanism, and according to temperature changes in the pressing process, the pressure on the cable porcelain column can be automatically adjusted so as to ensure the best production quality.

Description

Technical Field

[0001] The invention relates to the technical field of cable porcelain column pressing, in particular to a pressing device for producing mineral insulated heating cable porcelain columns. Background Art

[0002] ‌Cable porcelain column is an insulator used in power lines, mainly for insulation and support of wires. ‌Cable porcelain column is usually installed in power lines, used in AC power lines with nominal voltage higher than 1000V, frequency not more than 100Hz, altitude not more than 1000m in ordinary areas and medium and heavy pollution areas. The ambient temperature of its installation site is between -40℃ and +40℃.

[0003] The main purpose of the cable column is to insulate and support the conductors in the power line. It consists of a permanent glue mounted on a metal base, sometimes composed of one or more insulating parts, rigidly mounted on the supporting structure.

[0004] In the process of pressing the cable porcelain column, the control of temperature and pressure is very important. When the blank is pressed, the pressure required for pressing will be kept within a certain range. At this time, the blank can be heated. However, as the temperature of the blank increases, the movement rate between the blank molecules increases, and the pressure distribution in the blank will be uneven and the pressure will increase. The increase in pressure may cause cracks or breakage in the blank. Summary of the invention

[0005] The object of the present invention is to provide a pressing device for producing a mineral insulated heating cable porcelain column to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: The pressing device for producing mineral insulated heating cable porcelain column includes: A processing table, and a lower mold fixedly mounted on the processing table, wherein the processing table is also fixed with symmetrically arranged guide columns, and a fixing plate is fixed at one end of the guide column away from the processing table; Also includes: A lifting assembly is arranged on the fixed plate, and an elastic pressing mechanism is arranged on the lifting assembly. An upper mold matching with the lower mold is connected to the elastic pressing mechanism, and the lifting assembly can drive the upper mold to move towards or away from the lower mold through the elastic pressing mechanism. A temperature-controlled follower mechanism is arranged on the elastic pressing mechanism. A strength regulating component connected to the elastic pressing mechanism is also arranged on the temperature-controlled follower mechanism. The temperature-controlled follower mechanism can be activated when the elastic pressing mechanism moves to adjust the downward pressure on the upper mold through the strength regulating component.

[0007] As a further solution of the present invention: the lifting assembly includes a guide sleeve slidably mounted on the guide column, a support plate is fixed on the guide sleeve, a second cylinder is fixed on the fixed plate, and an output end of the second cylinder is fixedly connected to the support plate.

[0008] As a further solution of the present invention: the elastic pressing mechanism includes a supporting sleeve fixedly mounted on the supporting plate and symmetrically arranged, a supporting rod is slidably mounted in the supporting sleeve, a movable plate is fixed to the end of the supporting rod facing away from the supporting sleeve, the movable plate is fixedly connected to the upper mold, a connecting plate is slidably mounted on the supporting sleeve, and a guiding assembly connected to the lower mold is provided on the movable plate.

[0009] As a further solution of the present invention: the guide assembly includes a limiting hole opened on the lower mold, a limiting column matching the limiting hole is fixed on the movable plate, and a limiting structure connected to the support rod is provided on the support sleeve.

[0010] As a further solution of the present invention: the limiting structure includes a slot provided on the circumferential outer wall of the support sleeve, a protrusion slidably connected to the slot is fixed on the support rod, a spring is sleeved on the support sleeve and the support rod, and both ends of the spring are respectively abutted against the connecting plate and the movable plate.

[0011] As a further solution of the present invention: the temperature control follower mechanism includes a heat conducting tube fixedly mounted on the movable plate, a sealing disk is slidingly and sealingly mounted inside the heat conducting tube, and a driven component is arranged on the sealing disk.

[0012] As a further solution of the present invention: the driven component includes a push rod fixedly mounted on the sealing disk and passing through the heat-conducting tube, the circumferential outer wall of the push rod is provided with a vertical groove and a first spiral groove, the end of the vertical groove is connected to the end of the first spiral groove, and a rotating structure connected to the push rod is provided on the support plate.

[0013] As a further solution of the present invention: the rotating structure includes a rotating sleeve rotatably mounted on the support plate and sleeved on the push rod, and a first limit block slidably engaged with the vertical groove and the first spiral groove is fixed to the inner wall of the rotating sleeve.

[0014] As a further solution of the present invention: the strength control component includes a second spiral groove opened on the circumferential outer wall of the rotating sleeve, a sliding sleeve fixedly connected to the connecting plate is slidably mounted on the rotating sleeve, and a second limit block slidably connected to the second spiral groove is fixed on the inner wall of the sliding sleeve.

[0015] As a further solution of the present invention: a push plate is slidably installed in the lower mold, and a second cylinder symmetrically arranged is fixed in the processing table, and the output shaft of the second cylinder passes through the lower mold and is fixedly connected to the push plate.

[0016] Compared with the prior art, the beneficial effect of the present invention is that the present application can exert the required pressing force on the blank through the cooperation of the upper mold and the lower mold to realize the pressing and forming of the cable porcelain column. When the raw material is added into the lower mold, under the action of the lifting component, the elastic pressing mechanism is driven to move, so that the upper mold moves toward the lower mold. When the upper mold moves to the position abutting the raw material, the lifting component no longer moves at this time, thereby maintaining the position of the upper mold to press the raw material.

[0017] When the upper mold presses the raw material, the pressed raw material is heated under the action of the heating module, and after the temperature reaches the required value, the heating module is controlled to stop working under the action of the temperature sensor, thereby ensuring the best pressing quality of the cable porcelain column.

[0018] During the pressing process, the blank can be heated. As the temperature of the raw materials increases, the movement rate of the molecules increases, and uneven pressure distribution and increased pressure will occur in the blank. Excessive pressure will cause cracks or direct fractures in the ceramic column. Therefore, when the temperature rises, the temperature control follower mechanism will move. When the temperature reaches the set value, the temperature control follower mechanism will drive the strength control component to move, causing the elastic pressing mechanism to move, so as to automatically reduce the downward pressure of the upper mold on the blank when the temperature rises, thereby preventing the blank from breaking due to excessive pressure.

[0019] When the blank is pressed, the lifting assembly can control the upper mold to move toward the initial position through the elastic pressing mechanism. After the upper mold returns to the initial position, the first cylinder can drive the push plate to move to control the blank to separate from the lower mold, thereby facilitating the subsequent sintering process of the blank. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The present invention is a schematic structural diagram of an embodiment of a pressing device for producing porcelain columns of mineral insulated heating cables.

[0021] Figure 2 This is a structural schematic diagram from another angle in an embodiment of a pressing device for producing porcelain columns of mineral insulated heating cables.

[0022] Figure 3 for Figure 2 A schematic diagram of the enlarged structure at point A in the middle.

[0023] Figure 4It is a schematic diagram of the connection relationship between the elastic pressing mechanism and part of the temperature control follow-up mechanism in an embodiment of a pressing device for producing mineral insulated heating cable porcelain columns.

[0024] Figure 5 This is a schematic diagram of the structure of the elastic pressing mechanism, part of the temperature control follow-up mechanism, and the strength control component in an embodiment of a pressing device for producing mineral insulated heating cable porcelain columns.

[0025] Figure 6 This is a schematic diagram of a partial half-section structure of an embodiment of a pressing device for producing mineral insulated heating cable porcelain columns.

[0026] Figure 7 It is a schematic diagram of the exploded structure of a part of the elastic pressing mechanism in an embodiment of a pressing device for producing mineral insulated heating cable porcelain columns.

[0027] Figure 8 It is a schematic diagram of the exploded structure of part of the temperature control follow-up mechanism in the embodiment of the pressing device for producing the porcelain column of the mineral insulated heating cable.

[0028] Fig. 9 This is a schematic structural diagram of the lower mold, the first cylinder, and the push plate in an embodiment of a pressing device for producing mineral insulated heating cable porcelain columns.

[0029] Fig.10 This is a schematic diagram of the exploded structure of the lower mold, the first cylinder, and the push plate in an embodiment of a pressing device for producing mineral insulated heating cable porcelain columns.

[0030] In the figure: 1, processing table; 2, lower mold; 201, limiting hole; 3, push plate; 4, first cylinder; 5, guide column; 6, fixed plate; 7, second cylinder; 8, guide sleeve; 9, support plate; 10, support sleeve; 11, slot; 12, support rod; 13, protrusion; 14, movable plate; 15, limiting column; 16, upper mold; 17, spring; 18, connecting plate; 19, heat pipe; 20, sealing disk; 21, push rod; 2101, vertical groove; 2102, first spiral groove; 22, rotating sleeve; 23, first limiting block; 24, second spiral groove; 25, sliding sleeve; 26, second limiting block. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] In addition, when an element in the present invention is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only embodiment.

[0033] See also Figure 1-Figure 10 In an embodiment of the present invention, a pressing device for producing a mineral insulated heating cable porcelain column comprises: A processing table 1, and a lower mold 2 fixedly mounted on the processing table 1, a guide column 5 symmetrically arranged is also fixed on the processing table 1, a fixing plate 6 is fixed on one end of the guide column 5 away from the processing table 1, a push plate 3 is slidably mounted in the lower mold 2, a second cylinder 7 symmetrically arranged is fixed in the processing table 1, and an output shaft of the second cylinder 7 passes through the lower mold 2 and is fixedly connected to the push plate 3; Also includes: See also Figure 1 , Figure 2 , Figure 4 , Fig. 9 , Fig.10 The lifting assembly is arranged on the fixed plate 6, and the lifting assembly includes a guide sleeve 8 slidably mounted on the guide column 5, a support plate 9 is fixed on the guide sleeve 8, and a second cylinder 7 is fixed on the fixed plate 6, and the output end of the second cylinder 7 is fixedly connected to the support plate 9.

[0034] In detail, in the initial state, under the action of the first cylinder 4, the push plate 3 is located at a position that fits with the bottom of the lower mold 2, and under the action of the second cylinder 7, the support plate 9 is located at the end of the stroke away from the lower mold 2. Before pressing the cable porcelain column, it is necessary to weigh the raw materials first, and mix different raw materials in different proportions to obtain a raw material mixture. At this time, an adhesive can be added to the raw materials, and granulation treatment is carried out through a granulator. After the granulation is completed, the prepared raw material particles can be added into the lower mold 2. When the raw material addition is completed, under the action of the second cylinder 7, the support plate 9 is driven to move toward the lower mold 2, thereby driving the guide sleeve 8 to move along the length direction of the guide column 5. The guide sleeve 8 and the guide column 5 have a guiding function, which can ensure that the support plate 9 will not deviate during movement. The support plate 9 will also drive the upper mold 16 to move through the elastic pressing mechanism until the upper mold 16 enters the lower mold 2. Under the action of the upper mold 16 and the lower mold 2, the raw material is pressed and formed.

[0035] Preferably, a heating module and a temperature sensor are also provided in the lower mold 2. In the process of pressing the raw materials, the temperature control is very important. Too high or too low temperature will affect the density and strength of the porcelain column. Usually, the temperature needs to be controlled within an appropriate range to ensure uniform heating and molding of the porcelain column. Therefore, when the upper mold 16 presses the raw materials, the pressed raw materials are heated under the action of the heating module, and after the temperature reaches the required value, the heating module is controlled to stop working under the action of the temperature sensor, thereby ensuring the best pressing quality of the cable porcelain column. Among them, the heating module and the temperature sensor are both applications of the prior art, such as a resistance heating module, a microwave heating module, an electromagnetic heating module, etc., and the temperature sensor can be a thermocouple temperature sensor, a thermistor temperature sensor, etc., which will not be elaborated in this application.

[0036] It should be noted that the blanks of ceramic columns are generally formed by hot pressing, usually at 60~100℃ to allow the ceramic molecules to fully contact with the binder, improve the density of the raw materials, and help reduce the formation of voids and defects.

[0037] See also Figure 1 , Figure 2 , Figure 4-Figure 7 The lifting assembly is provided with an elastic pressing mechanism, and the elastic pressing mechanism is connected to an upper mold 16 that cooperates with the lower mold 2. The lifting assembly can drive the upper mold 16 to move in a direction close to or away from the lower mold 2 through the elastic pressing mechanism. The elastic pressing mechanism includes a support sleeve 10 that is fixedly installed on the support plate 9 and symmetrically arranged. A support rod 12 is slidably installed in the support sleeve 10, and a movable plate 14 is fixed to the end of the support rod 12 away from the support sleeve 10. The movable plate 14 is fixedly connected to the upper mold 16, and a connecting plate 18 is slidably installed on the support sleeve 10. The movable plate 1 4 is provided with a guide assembly connected with the lower mold 2, wherein the guide assembly includes a limiting hole 201 opened on the lower mold 2, a limiting column 15 matched with the limiting hole 201 is fixed on the movable plate 14, a limiting structure connected with the support rod 12 is provided on the support sleeve 10, the limiting structure mentioned above includes a groove 11 opened on the circumferential outer wall of the support sleeve 10, a protrusion 13 slidably connected with the groove 11 is fixed on the support rod 12, a spring 17 is sleeved on the support sleeve 10 and the support rod 12, and the two ends of the spring 17 are respectively abutted against the connecting plate 18 and the movable plate 14.

[0038] It should be noted that, in the initial state, under the action of the first cylinder 4, the distance between the upper mold 16 and the lower mold 2 is maximized, and under the action of the strength control component, the connecting plate 18 is located at the end of the stroke away from the support plate 9, so that the connecting plate 18 is located at the end of the stroke away from the support plate 9, so that the spring 17 is in a compressed state, and under the action of the spring 17, the support rod 12 is located at the end of the stroke away from the support sleeve 10, and the protrusion 13 will be located at the end of the stroke on the side of the slot 11, so that the distance between the support plate 9 and the movable plate 14 is maximized, and under the action of the protrusion 13 and the slot 11, it is ensured that the support rod 12 will not separate from the support sleeve 10. When the cable porcelain column needs to be pressed, the raw material can be added into the lower mold 2. At this time, the second cylinder 7 works and drives the support plate 9 to move toward the lower mold 2, thereby driving the support The support sleeve 10 moves, and the support sleeve 10 will control the synchronous movement of the support rod 12 through the spring 17 to drive the movable plate 14 to move. Under the action of the movable plate 14, the limit column 15 and the upper mold 16 are controlled to move toward the lower mold 2. When the limit column 15 is inserted into the limit hole 201, under the action of the limit column 15 and the limit hole 201, it is ensured that the upper mold 16 can smoothly enter the lower mold 2. As the movable plate 14 continues to move, the upper mold 16 will enter the lower mold 2. Under the action of the upper mold 16 and the lower mold 2, the raw material is pressed. At this time, the second cylinder 7 continues to move, so that the size of the support sleeve 10 inserted into the support rod 12 gradually increases to compress the spring 17. The pressure of the upper mold 16 on the raw material will gradually increase until the pressing force provided to the raw material by the upper mold 16 reaches the required level, and then the second cylinder 7 stops working.

[0039] Preferably, after the second cylinder 7 stops moving, the upper mold 16 needs to be kept stationary for a period of time. During this process, the raw material can be heated by the heating module to ensure that the pressure and temperature of the raw material meet the required requirements. A pressure sensor that cooperates with the push plate 3 is also provided in the lower mold 2 to detect the pressing force of the upper mold 16 on the raw material. When the pressure reaches the required requirement, the pressure sensor can control the second cylinder 7 to stop moving. This is an application of the prior art and will not be elaborated in this application.

[0040] Among them, when the pressing is completed, the second cylinder 7 controls the support plate 9 to move toward the initial position to drive the support sleeve 10 to move away from the support rod 12. At this time, the spring 17 is elastically released, so that the size of the support rod 12 and the support sleeve 10 gradually decreases until the protrusion 13 returns to the end of the stroke on one side of the slot 11 again. The support sleeve 10 will drive the movable plate 14 to move through the support rod 12, so that the upper mold 16 is separated from the lower mold 2. When the upper mold 16 returns to the initial position, the second cylinder 7 stops moving. At this time, the first cylinder 4 works and pushes the push plate 3 to move to drive the pressed blank to separate from the lower mold 2. At this time, the blank can be placed in a sintering furnace for sintering.

[0041] See also Figure 1-Figure 6 , Figure 8 , a temperature control follow-up mechanism is arranged on the elastic pressing mechanism, the temperature control follow-up mechanism includes a heat-conducting tube 19 fixedly mounted on the movable plate 14, a sealing disk 20 is slidingly and sealably mounted in the heat-conducting tube 19, and a driven component is arranged on the sealing disk 20, wherein the driven component includes a push rod 21 fixedly mounted on the sealing disk 20 and passing through the heat-conducting tube 19, a vertical groove 2101 and a first spiral groove 2102 are opened on the circumferential outer wall of the push rod 21, the end of the vertical groove 2101 is connected with the end of the first spiral groove 2102, and a rotating structure connected with the push rod 21 is arranged on the support plate 9, the rotating structure mentioned above includes a rotating sleeve 22 rotatably mounted on the support plate 9 and sleeved on the push rod 21, and a first limit block 23 slidably engaged with the vertical groove 2101 and the first spiral groove 2102 is fixed on the inner wall of the rotating sleeve 22.

[0042] Furthermore, the sealing disk 20 divides the heat-conducting tube 19 into two spaces. The space on the side facing the movable plate 14 is filled with expanding gas, and the other space is connected to the outside. In the initial state, the temperature of the heat-conducting tube 19 is relatively low, so that the sealing disk 20 is located at the end of the stroke toward the movable plate 14. Under the action of the spring 17, the movable plate 14 is located at the end of the stroke away from the support plate 9, so that the size of the fit between the rotating sleeve 22 and the push rod 21 is minimized. The first limit block 23 is located at the end of the stroke on the side of the vertical groove 2101 away from the first spiral groove 2102. When the raw material needs to be pressed, at this time, under the action of the second cylinder 7, the support plate 9 is controlled to move, thereby controlling the upper mold 16 to move toward the lower mold 2. Before the tool 16 is fitted with the raw material, under the action of the spring 17, it can ensure that the size of the support sleeve 10 and the support rod 12 remains unchanged, and the size of the push rod 21 and the rotating sleeve 22 remains unchanged. When the upper mold 16 moves to the position of fitting with the raw material, the raw material can be pressed. At this time, the position of the upper mold 16 remains basically unchanged, and the support sleeve 10 continues to move toward the support rod 12, so that the size of the support sleeve 10 and the support rod 12 increases. At the same time, the rotating sleeve 22 will also move toward the push rod 21, so that the first limit block 23 moves along the length direction of the vertical groove 2101. When the pressure applied by the upper mold 16 to the raw material reaches the required level, the second cylinder 7 stops working, and the first limit block 23 is still located in the vertical groove 2101.

[0043] Preferably, when the upper mold 16 maintains the pressing force on the raw material, the raw material needs to be heated by the heating module. However, as the temperature of the raw material increases, the movement rate of the molecules increases, and the pressure distribution in the blank will be uneven and the pressure will increase. Too high pressure will cause cracks or direct fractures in the ceramic column. Therefore, when the temperature of the upper mold 16 and the lower mold 2 increases, the heat will be conducted to the heat pipe 19, causing the expanding gas to expand. Under the action of the air pressure, the sealing disk 20 is driven to move in the direction away from the movable plate 14, so as to drive the push rod 21 to move. At this time, the first limit block 23 will continue to move along the length direction of the vertical groove 2101. When the temperature reaches the maximum value, it is necessary to reduce the pressing force on the raw material. At this time, the first limit block 23 will disengage from the vertical groove 2101 and enter the first spiral groove 2102, causing the rotating sleeve 22 to rotate. Under the action of the rotating sleeve 22, the connecting plate 18 is controlled to move toward the support plate 9 through the strength control component, thereby reducing the elastic potential energy of the spring 17. Through the action of the strength control component, the effect of automatically adjusting the pressure on the blank can be achieved according to the temperature change, ensuring that the blank will not have internal defects due to excessive pressure.

[0044] See also Figure 1 , Figure 2 , Figure 4-Figure 8The temperature control follower mechanism is also provided with a strength control component connected to the elastic pressing mechanism. The temperature control follower mechanism can be activated when the elastic pressing mechanism moves to adjust the downward pressure on the upper mold 16 through the strength control component. The strength control component includes a second spiral groove 24 provided on the outer wall of the circumference of the rotating sleeve 22, and a sliding sleeve 25 fixedly connected to the connecting plate 18 is slidably mounted on the rotating sleeve 22. A second limit block 26 slidably connected to the second spiral groove 24 is fixed on the inner wall of the sliding sleeve 25.

[0045] Furthermore, in the initial state, the second limit block 26 is located at the end of the stroke on one side of the second spiral groove 24, so that the connecting plate 18 is located at the end of the stroke in the direction away from the support plate 9, and the first limit block 23 is located in the vertical groove 2101. Under the action of the first limit block 23 and the vertical groove 2101, it is ensured that the rotating sleeve 22 does not rotate. When the upper mold 16 is fitted with the blank, under the action of the heating module, the temperature of the blank will gradually increase, and the first limit block 23 will slide along the vertical groove 2101. When the temperature of the blank reaches the set value, the first limit block 23 will break away from the vertical groove 2101 and enter the first spiral groove 210 2, so that the rotating sleeve 22 rotates, the rotating sleeve 22 will drive the second spiral groove 24 to move, so that the second limit block 26 moves, so as to drive the sliding sleeve 25 to move, and the sliding sleeve 25 will also drive the connecting plate 18 to move along the length direction of the supporting sleeve 10. Since the connecting plate 18 and the supporting sleeve 10 have a guiding function, it is ensured that the sliding sleeve 25 will not rotate with the rotating sleeve 22. The connecting plate 18 will move toward the supporting plate 9, so that the elastic potential energy of the spring 17 is reduced, thereby reducing the downward pressure of the upper mold 16 on the blank, ensuring that the blank will not increase in pressure due to the increase in temperature, resulting in the problem of blank breakage.

[0046] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0047] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. Pressing device for producing porcelain column of mineral insulated heating cable, including: A processing table (1), and a lower mold (2) fixedly mounted on the processing table (1), wherein the processing table (1) is also fixed with symmetrically arranged guide columns (5), and a fixing plate (6) is fixed to one end of the guide column (5) facing away from the processing table (1); It is characterized by further comprising: a lifting assembly, arranged on the fixing plate (6), the lifting assembly being provided with an elastic pressing mechanism, the elastic pressing mechanism being connected to an upper mold (16) that cooperates with the lower mold (2), the lifting assembly being able to drive the upper mold (16) to move in a direction approaching or away from the lower mold (2) through the elastic pressing mechanism; A temperature-controlled follower mechanism is arranged on the elastic pressing mechanism, and a strength regulating component connected to the elastic pressing mechanism is also arranged on the temperature-controlled follower mechanism. The temperature-controlled follower mechanism can be activated when the elastic pressing mechanism moves, so as to adjust the downward pressure on the upper mold (16) through the strength regulating component.

2. The pressing device for producing the mineral insulated heating cable porcelain column according to claim 1, characterized in that: The lifting assembly comprises a guide sleeve (8) slidably mounted on the guide column (5), a support plate (9) being fixed on the guide sleeve (8), a second cylinder (7) being fixed on the fixed plate (6), and an output end of the second cylinder (7) being fixedly connected to the support plate (9); A heating module and a temperature sensor are also provided in the lower mold (2). When the upper mold (16) presses the raw material, the pressed raw material is heated under the action of the heating module, and when the temperature reaches a desired value, the heating module is controlled to stop working under the action of the temperature sensor.

3. The pressing device for producing the mineral insulated heating cable porcelain column according to claim 2, characterized in that: The elastic pressing mechanism comprises a supporting sleeve (10) fixedly mounted on the supporting plate (9) and arranged symmetrically, a supporting rod (12) being slidably mounted in the supporting sleeve (10), a movable plate (14) being fixed to one end of the supporting rod (12) away from the supporting sleeve (10), the movable plate (14) being fixedly connected to the upper mold (16), a connecting plate (18) being slidably mounted on the supporting sleeve (10), and a guiding assembly connected to the lower mold (2) being arranged on the movable plate (14).

4. The pressing device for producing the mineral insulated heating cable porcelain column according to claim 3, characterized in that: The guide assembly comprises a limiting hole (201) formed on the lower mould (2), a limiting column (15) cooperating with the limiting hole (201) is fixed on the movable plate (14), and a limiting structure connected with the support rod (12) is provided on the support sleeve (10).

5. The pressing device for producing the mineral insulated heating cable porcelain column according to claim 4, characterized in that: The limiting structure comprises a slot (11) formed on the outer circumferential wall of the support sleeve (10); a protrusion (13) slidably connected to the slot (11) is fixed on the support rod (12); a spring (17) is sleeved on the support sleeve (10) and the support rod (12); two ends of the spring (17) are respectively in contact with the connecting plate (18) and the movable plate (14).

6. The pressing device for producing the mineral insulated heating cable porcelain column according to claim 3, characterized in that: The temperature control follower mechanism comprises a heat conducting pipe (19) fixedly mounted on the movable plate (14), a sealing disk (20) being slidably and sealingly mounted inside the heat conducting pipe (19), and a driven component being arranged on the sealing disk (20).

7. The pressing device for producing the mineral insulated heating cable porcelain column according to claim 6, characterized in that: The driven assembly comprises a push rod (21) fixedly mounted on the sealing disk (20) and penetrating the heat conducting pipe (19); a vertical groove (2101) and a first spiral groove (2102) are provided on a circumferential outer wall of the push rod (21); an end of the vertical groove (2101) is connected to an end of the first spiral groove (2102); and a rotating structure connected to the push rod (21) is provided on the support plate (9).

8. The pressing device for producing the mineral insulated heating cable porcelain column according to claim 7, characterized in that: The rotating structure comprises a rotating sleeve (22) rotatably mounted on the support plate (9) and sleeved on the push rod (21), and a first limiting block (23) slidably engaged with the vertical groove (2101) and the first spiral groove (2102) is fixed to the inner wall of the rotating sleeve (22).

9. The pressing device for producing the mineral insulated heating cable porcelain column according to claim 8, characterized in that: The strength control component comprises a second spiral groove (24) formed on the circumferential outer wall of the rotating sleeve (22); a sliding sleeve (25) fixedly connected to the connecting plate (18) is slidably mounted on the rotating sleeve (22); and a second limit block (26) slidably connected to the second spiral groove (24) is fixedly mounted on the inner wall of the sliding sleeve (25).

10. The pressing device for producing the mineral insulated heating cable porcelain column according to claim 1, characterized in that: A push plate (3) is slidably mounted in the lower mold (2), and a second cylinder (7) is fixed in a symmetrical arrangement in the processing table (1), wherein an output shaft of the second cylinder (7) passes through the lower mold (2) and is fixedly connected to the push plate (3).

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