Fluorine-lined valve hot mold injection mold and use method thereof

Abstract

The invention relates to the technical field of fluorine lining valve hot mold injection molding, and discloses a fluorine lining valve hot mold injection mold and a using method thereof.The fluorine lining valve hot mold injection mold comprises a [-shaped base, a driving motor is fixedly installed on the back face of the [-shaped base, and a double-threaded rod is rotatably installed on the [-shaped base and penetrates through the [-shaped base; the tail end of the double-threaded rod is fixedly connected with an output shaft of the driving motor, a valve is arranged on the upper portion of the n-shaped base, the drying mechanism comprises a first inner threaded plate arranged on the double-threaded rod in a threaded and sleeving mode, an air bellow is fixedly installed on the front face of the n-shaped base, and the air bellow is fixedly connected with the air bellow. And a plurality of suction fan blades are fixedly mounted on the double-threaded rod, and a cleaning plate is fixedly mounted on the double-threaded rod. After hot air is blown into the valve, external dust and impurities are prevented from falling on the fluorine lining to generate flaws and defects, meanwhile, the exhaust effect of the liquid fluorine lining is improved, and flaws generated due to slow exhaust of gas are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of hot die injection molding equipment for fluorine-lined valves, and specifically relates to a hot die injection molding die for fluorine-lined valves and its usage method. Background Technique

[0002] A hot die injection molding die for fluorine-lined valves is mainly used for manufacturing fluorine-lined valves. Its core is to heat the fluoroplastic to a suitable molten state and then inject it into the die cavity, and then form the fluorine-lined valve product through subsequent cooling and other processes.

[0003] Conventional fluorine-lined injection molding is carried out by rotation for coating injection. When coating the inner wall of the formed valve with fluorine lining, not only needs to consider whether the liquid fluorine lining can be evenly coated, but also when coating, the liquid fluorine lining will slowly volatilize gas, and the gas will form defects on the coating surface when discharging, thus affecting the injection molding quality of the fluorine lining, resulting in poor injection molding quality of the fluorine lining and affecting the sealing performance and corrosion resistance of the valve. Summary of the Invention

[0004] The purpose of the present invention is to provide a hot die injection molding die for fluorine-lined valves and its usage method to solve the problem that when coating, the liquid fluorine lining will slowly volatilize gas, and the gas will form defects on the coating surface when discharging, thus affecting the injection molding quality of the fluorine lining, resulting in poor injection molding quality of the fluorine lining and affecting the sealing performance and corrosion resistance of the valve.

[0005] To solve the above technical problems, the present invention is realized through the following technical solutions:

[0006] The present invention is a hot die injection molding die for fluorine-lined valves, including a U-shaped base. A driving motor is fixedly installed on the back of the U-shaped base. A double threaded rod is rotatably installed on the U-shaped base. The double threaded rod penetrates through the U-shaped base, and the end of the double threaded rod is fixedly connected to the output shaft of the driving motor. A valve is arranged above the U-shaped base, and further includes:

[0007] A drying mechanism, the drying mechanism includes an inner threaded plate one threadedly sleeved on the double threaded rod. A wind box is fixedly installed on the front of the U-shaped base. A plurality of suction fan blades are fixedly installed on the double threaded rod. A cleaning plate is fixedly installed on the double threaded rod. The cleaning plate is in contact with the front of the wind box. A plurality of air inlet holes are opened on the front of the wind box. A connecting pipe is fixedly installed on the top of the wind box. A heating box is fixedly installed on the top of the U-shaped base. The end of the connecting pipe communicates with the heating box. A plurality of heating pipes are arranged in the heating box. An air outlet pipe is fixedly installed on the top of the heating box. An annular cavity is opened in the inner threaded plate one. A plurality of arc-shaped exhaust grooves are opened on the back inner wall of the annular cavity. The end of the air outlet pipe communicates with the annular cavity.

[0008] Further, an L-shaped annular plate is rotatably mounted on the back surface of the first internal thread plate. A plurality of telescopic springs are fixedly mounted on the inner wall of the back surface of the L-shaped annular plate. The ends of the plurality of telescopic springs are fixedly mounted with an annular plate. The outer wall of the annular plate is in contact with the L-shaped annular plate. The back surface of the annular plate is in contact with the valve.

[0009] Further, a rotating mechanism is provided on the U-shaped base. The rotating mechanism includes a fixed frame fixedly mounted on the top of the U-shaped base. A rotating plate is rotatably mounted in the fixed frame. A plurality of teeth are fixedly mounted on the outer wall of the rotating plate. A gear is fixedly sleeved on the double threaded rod. The gear meshes with the plurality of teeth.

[0010] Further, a plurality of cross grooves are formed in the rotating plate. Telescopic springs are respectively fixedly mounted on the inner walls of the mutually remote sides of the plurality of cross grooves. Clamping plates are respectively fixedly mounted on the mutually approaching ends of the plurality of telescopic springs. Arc-shaped clamping blocks are respectively fixedly mounted on the mutually approaching sides of the plurality of clamping plates. A plurality of rubber blocks are respectively fixedly mounted on the arc surfaces of the plurality of arc-shaped clamping blocks.

[0011] Further, a second internal thread plate is threadedly sleeved on the double threaded rod. A rotating round block is rotatably mounted on the front surface of the second internal thread plate. Connecting long plates are respectively hingedly mounted at the ends of the plurality of clamping plates. The ends of the plurality of connecting long plates are all hinged to the rotating round block.

[0012] Further, an adapting mechanism is provided on the front and back surfaces of the fixed frame. The adapting mechanism includes U-shaped fixing plates fixedly mounted on the front and back surfaces of the fixed frame. Limiting rods are respectively fixedly mounted on the mutually remote sides of the U-shaped fixing plate and the limiting rod. The mutually remote ends of the two limiting rods are both fixedly connected to the U-shaped base. Adapting springs are respectively sleeved on the two limiting rods. Adapting plates one and two are respectively slidably sleeved on the two limiting rods. The mutually remote ends of the two adapting springs are respectively fixedly connected to the U-shaped base and the adapting plate two. The mutually approaching ends of the two adapting springs are respectively fixedly connected to the adapting plate two and the U-shaped base. The front surface of the adapting plate two is in contact with the first internal thread plate. The front surface of the adapting plate one is in contact with the second internal thread plate.

[0013] Further, a coating mechanism is provided on the first internal thread plate. The coating mechanism includes a coating pipe fixedly mounted on the first internal thread plate. Two discharge pipes are fixedly mounted at the bottom of the coating pipe. A storage tank is fixedly mounted on the top of the U-shaped base. The bottom ends of the two discharge pipes are both fixedly connected to the storage tank. Two electric telescopic rods are fixedly mounted on the top of the U-shaped base. The output ends of the two electric telescopic rods both extend into the storage tank and are both slidably connected to the storage tank. A push plate is fixedly mounted on the output ends of the two electric telescopic rods.

[0014] Furthermore, the method for making a hot mold injection mold for a fluorine-lined valve comprises the following steps:

[0015] S1: fixed valve;

[0016] S2: Close the vents;

[0017] S3: fluorine lining coating;

[0018] S4: Drying injection molding.

[0019] The present invention has the following beneficial effects:

[0020] (1) The present invention provides a hot mold injection mold for a fluorine-lined valve. During the rotation of the double-threaded rod, the internal threaded plate 1 will be driven to move toward the direction close to the valve, and the internal threaded plate 1 will drive the coating tube to be inserted into the valve. During the movement of the internal threaded plate 1, the L-shaped annular plate will be driven to move synchronously, and the L-shaped annular plate will drive the telescopic spring to move, and the telescopic spring will drive the annular plate to contact the valve. At this time, the telescopic spring will be compressed and deformed during the continuous movement of the internal threaded plate 1. When the discharge port on the valve is facing the inner wall of the valve, the internal threaded plate 1 will stop moving. At this time, the through hole on the front of the valve will be closed. After the hot air is blown into the valve, dust and impurities from the outside are prevented from falling on the fluorine lining to cause defects, and at the same time, the exhaust effect of the liquid fluorine lining is improved, and the defects caused by the slow discharge of gas are reduced. In addition, the double-threaded rod will also drive the cleaning plate to rotate, and the cleaning plate will scrape off the dust and impurities attached to the surface of the air inlet hole to prevent the dust from clogging the air inlet hole and affecting the drying effect;

[0021] (2) A hot mold injection mold for a fluorine-lined valve of the present invention, wherein the valve is placed between a plurality of arc-surface clamping blocks, and then a driving motor is started to drive the double-threaded rod to rotate, and the double-threaded rod will drive the second internal threaded plate to approach the first adaptable plate, and the second internal threaded plate will drive the rotating round block to move, and the rotating round block will drive a plurality of connecting long plates to move, and the connecting long plates will drive a plurality of clamping plates to approach each other, and the clamping plates will drive a plurality of arc-surface clamping blocks to approach each other, and the arc-surface clamping blocks will contact the valve and clamp the valve in the process of approaching each other, and the rubber block on the arc-surface of the arc-surface clamping block will cling to the valve to improve the clamping effect of the valve through the friction of the rubber block, thereby preventing the valve from being unstable during the rotation process, resulting in uneven fluorine-lined coating injection molding;

[0022] (3) The present invention provides a hot mold injection mold for a fluorine-lined valve. When the electric telescopic rod is started, the electric telescopic rod pushes the push plate to move away from the valve. The push plate squeezes the liquid fluorine lining in the storage box into the discharge pipe, and is discharged through the coating pipe and falls on the inner wall of the valve. During the rotation of the double-threaded rod, the gear is driven to rotate. The gear drives the rotating plate to rotate under the action of a plurality of teeth. The rotating plate drives the clamping plate to rotate. The clamping plate drives the arc clamping block to rotate. The arc clamping block drives the valve to rotate. At this time, the liquid fluorine lining is evenly coated on the inner wall of the valve under the high-speed rotation of the valve;

[0023] (4) In the hot mold injection mold for a fluorine-lined valve of the present invention, the double-threaded rod drives a plurality of suction fan blades to rotate during rotation, and the suction fan blades generate a suction force, which draws external air into the bellows through the air inlet hole and blows it into the heating box through the connecting pipe. The heating of the air outlet pipe turns the air entering the heating box into hot air, which is blown from the air outlet pipe into the annular cavity, and then blown out from a plurality of arc-shaped exhaust slots to dry the liquid fluorine lining coated on the inner wall of the valve, thereby improving the curing efficiency of the fluorine lining, avoiding uneven fluorine lining on the inner wall of the valve and preventing volatiles from being completely discharged in time and being sealed in the coating, thereby improving the quality of fluorine lining injection molding;

[0024] (5) The present invention provides a fluorine-lined valve hot mold injection mold. During the process of the internal thread plate 1 moving toward the valve, it will contact the adaptable plate 2 and push the adaptable plate 2 to move. At this time, the adaptable spring will be compressed and deformed. When the internal thread plate 1 is separated from the threads on the double-threaded rod, the internal thread plate 1 will support the adaptable plate 2 under the elastic force of the adaptable spring. At this time, the internal thread plate 1 will be in a state of semi-detached from the threads. During the process of the internal thread plate 2 moving away from the valve, it will also contact the adaptable plate 1 and push the adaptable plate 1 to move. The effect is the same as above. At this time, it will not affect the normal rotation of the double-threaded rod, and the internal thread plate 1 and the internal thread plate 2 will also be in place one after another, thereby improving the flexibility of the device.

[0025] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 It is a side cross-sectional structural schematic diagram of the present invention;

[0029] Figure 3 For the present invention Figure 2 Schematic diagram of the enlarged structure of A in the present invention;

[0030] Figure 4 For the present invention Figure 2 Schematic diagram of the enlarged structure of B in the present invention;

[0031] Figure 5 For the present invention Figure 2 Schematic diagram of the enlarged structure of C in the present invention;

[0032] Figure 6 Schematic diagram of the side partial cross-sectional structure of the present invention;

[0033] Figure 7 Schematic diagram of the partial cross-sectional structure of the present invention;

[0034] Figure 8 Schematic diagram of the method steps of the present invention.

[0035] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0036] In the figure: 1, U-shaped base; 2, drive motor; 3, double threaded rod; 4, valve; 5, drying mechanism; 501, inner threaded plate 1; 502, air box; 503, suction fan blade; 504, cleaning plate; 505, air inlet hole; 506, connecting pipe; 507, heating box; 508, air outlet pipe; 509, annular cavity; 510, arc-shaped exhaust groove; 5101, L-shaped annular plate; 511, telescopic spring; 512, annular plate; 6, rotating mechanism; 601, fixing frame; 602, rotating plate; 603, teeth; 604, gear; 605, cross groove; 606, telescopic spring; 607, clamping plate; 608, arc-shaped clamping block; 609, inner threaded plate 2; 610, rotating round block; 611, connecting long plate; 7, adapting mechanism; 701, U-shaped fixing plate; 702, limiting rod; 703, adapting spring; 704, adapting plate 1; 705, adapting plate 2; 8, coating mechanism; 801, coating pipe; 802, discharge pipe; 803, storage tank; 804, electric telescopic rod; 805, push plate. Detailed implementation manners

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0038] Please refer to Figure 1 - Figure 8 As shown in the figure, the present invention is a hot die injection mold for a fluorine-lined valve, including a U-shaped base 1. A driving motor 2 is fixedly installed on the back of the U-shaped base 1. A double threaded rod 3 is rotatably installed on the U-shaped base 1. The double threaded rod 3 penetrates through the U-shaped base 1, and the end of the double threaded rod 3 is fixedly connected to the output shaft of the driving motor 2. A valve 4 is arranged above the U-shaped base 1. It also includes:

[0039] A drying mechanism 5, the drying mechanism 5 includes an inner threaded plate one 501 threadedly sleeved on the double threaded rod 3. An air box 502 is fixedly installed on the front of the U-shaped base 1. A plurality of suction fan blades 503 are fixedly installed on the double threaded rod 3. A cleaning plate 504 is fixedly installed on the double threaded rod 3. The cleaning plate 504 is in contact with the front of the air box 502. A plurality of air inlet holes 505 are opened on the front of the air box 502. A connecting pipe 506 is fixedly installed on the top of the air box 502. A heating box 507 is fixedly installed on the top of the U-shaped base 1. The end of the connecting pipe 506 communicates with the heating box 507. A plurality of heating pipes are arranged in the heating box 507. An air outlet pipe 508 is fixedly installed on the top of the heating box 507. An annular cavity 509 is opened in the inner threaded plate one 501. A plurality of arc-shaped exhaust grooves 510 are opened on the back inner wall of the annular cavity 509. The end of the air outlet pipe 508 communicates with the annular cavity 509.

[0040] As Figure 4 shown, an L-shaped annular plate 5101 is rotatably installed on the back of the inner threaded plate one 501. A plurality of telescopic springs 511 are fixedly installed on the back inner wall of the L-shaped annular plate 5101. The ends of the plurality of telescopic springs 511 are fixedly installed with an annular plate 512. The outer wall of the annular plate 512 is in contact with the L-shaped annular plate 5101. The back of the annular plate 512 is in contact with the valve 4.

[0041] During the movement of the inner threaded plate one 501, it will drive the L-shaped annular plate 5101 to move synchronously. The L-shaped annular plate 5101 will drive the telescopic springs 511 to move. The telescopic springs 511 will drive the annular plate 512 to contact the valve 4. At this time, the telescopic springs 511 will undergo compressive deformation during the continuous movement of the inner threaded plate one 501. When the discharge port on the valve 4 is facing the inner wall of the valve 4, the inner threaded plate one 501 will stop moving.

[0042] As Figure 5 shown, a rotating mechanism 6 is arranged on the U-shaped base 1. The rotating mechanism 6 includes a fixed frame 601 fixedly installed on the top of the U-shaped base 1. A rotating plate 602 is rotatably installed in the fixed frame 601. A plurality of teeth 603 are fixedly installed on the outer wall of the rotating plate 602. A gear 604 is fixedly sleeved on the double threaded rod 3. The gear 604 meshes with the plurality of teeth 603.

[0043] When the double-threaded rod 3 rotates, the gear 604 is driven to rotate, and the gear 604 drives the rotating plate 602 to rotate under the action of a plurality of teeth 603 .

[0044] like Figure 1 and Figure 5 As shown, a plurality of cross grooves 605 are provided in the rotating plate 602, and telescopic springs 606 are respectively fixedly installed on the inner walls of the plurality of cross grooves 605 on the sides away from each other, and clamping plates 607 are respectively fixedly installed on the ends of the plurality of telescopic springs 606 close to each other, and arc clamping blocks 608 are respectively fixedly installed on the sides of the plurality of clamping plates 607 close to each other, and a plurality of rubber blocks are respectively fixedly installed on the arc surfaces of the plurality of arc clamping blocks 608.

[0045] The rotating plate 602 will drive the clamping plate 607 to rotate, the clamping plate 607 will drive the arc clamping block 608 to rotate, and the arc clamping block 608 will drive the valve 4 to rotate. At this time, the liquid lining fluorine will be evenly coated on the inner wall of the valve 4 under the high-speed rotation of the valve 4.

[0046] like Figure 5 As shown, a second internal thread plate 609 is threadedly sleeved on the double-threaded rod 3, a rotating round block 610 is rotatably mounted on the front of the second internal thread plate 609, and the ends of several clamping plates 607 are respectively hingedly mounted with connecting long plates 611, and the ends of several connecting long plates 611 are all hinged to the rotating round block 610.

[0047] The double-threaded rod 3 will drive the second internal thread plate 609 to approach the direction of the adaptation plate 1 704, the second internal thread plate 609 will drive the rotating round block 610 to move, the rotating round block 610 will drive several connecting long plates 611 to move, the connecting long plates 611 will drive several clamping plates 607 to approach each other, the clamping plates 607 will drive several arc clamping blocks 608 to approach each other, and the arc clamping blocks 608 will contact the valve 4 and clamp the valve 4 in the process of approaching each other.

[0048] like Figure 2As shown in the figure, adaptation mechanisms 7 are provided on the front and back of the fixing bracket 601. The adaptation mechanism 7 includes U-shaped fixing plates 701 fixedly installed on the front and back of the fixing bracket 601. On the sides of the U-shaped fixing plates 701 and the limiting rods 702 away from each other, limiting rods 702 are fixedly installed respectively. The ends of the two limiting rods 702 away from each other are both fixedly connected to the U-shaped base 1. Adaptation springs 703 are sleeved on the two limiting rods 702 respectively. An adaptation plate one 704 and an adaptation plate two 705 are slidably sleeved on the two limiting rods 702 respectively. The ends of the two adaptation springs 703 away from each other are fixedly connected to the U-shaped base 1 and the adaptation plate two 705 respectively. The ends of the two adaptation springs 703 close to each other are fixedly connected to the adaptation plate two 705 and the U-shaped base 1 respectively. The front of the adaptation plate two 705 is in contact with the internal thread plate one 501, and the front of the adaptation plate one 704 is in contact with the internal thread plate two 609.

[0049] During the process of the internal thread plate one 501 moving towards the valve 4, it will contact the adaptation plate two 705 and push the adaptation plate two 705 to move. At this time, the adaptation spring 703 undergoes a compressive deformation. When the internal thread plate one 501 disengages from the thread on the double threaded rod 3, the internal thread plate one 501 will顶住 the adaptation plate two 705 under the elastic force of the adaptation spring 703. At this time, the internal thread plate one 501 will be in a state of semi-disengagement from the thread.

[0050] As Figure 7 shown in the figure, a coating mechanism 8 is provided on the internal thread plate one 501. The coating mechanism 8 includes a coating pipe 801 fixedly installed on the internal thread plate one 501. Two discharge pipes 802 are fixedly installed at the bottom of the coating pipe 801. A storage tank 803 is fixedly installed on the top of the U-shaped base 1. The bottom ends of the two discharge pipes 802 are both fixedly connected to the storage tank 803. Two electric telescopic rods 804 are fixedly installed on the top of the U-shaped base 1. The output ends of the two electric telescopic rods 804 both extend into the storage tank 803 and are both slidably connected to the storage tank 803. A push plate 805 is fixedly installed at the output ends of the two electric telescopic rods 804.

[0051] Start the electric telescopic rod 804. The electric telescopic rod 804 pushes the push plate 805 to move in a direction away from the valve 4. The push plate 805 will squeeze the liquid fluorine lining in the storage tank 803 into the discharge pipe 802 and discharge it through the coating pipe 801 to fall on the inner wall of the valve 4.

[0052] As Figure 1-8 A method for hot mold injection molding of a fluorine-lined valve is as follows:

[0053] S1: Fix the valve;

[0054] S2: Seal the ventilation opening;

[0055] S3: Coat with fluorine lining;

[0056] S4: Drying injection molding.

[0057] During the rotation of the double-threaded rod 3, the internal threaded plate 501 will be driven to move towards the direction close to the valve 4, and the internal threaded plate 501 will drive the coating tube 801 to be inserted into the valve 4. During the movement of the internal threaded plate 501, the L-shaped annular plate 5101 will be driven to move synchronously, and the L-shaped annular plate 5101 will drive the telescopic spring 511 to move, and the telescopic spring 511 will drive the annular plate 512 to contact the valve 4. At this time, the telescopic spring 511 will be compressed and deformed during the continuous movement of the internal threaded plate 501. When the discharge port on the valve 4 is facing the inner wall of the valve 4, the internal threaded plate 501 will stop moving. At this time, the through hole on the front of the valve 4 will be closed. After the hot air is blown into the valve 4, it is prevented that external dust and impurities fall on the lining fluorine to cause defects, while improving the exhaust effect of the liquid lining fluorine and reducing the defects caused by the slow discharge of gas. In addition, the double-threaded rod 3 will also drive the cleaning plate 504 to rotate, and the cleaning plate 504 will The dust and impurities attached to the surface of the air inlet 505 are scraped off to prevent the dust from clogging the air inlet 505 and affecting the drying effect; the valve 4 is placed between several arc-surface clamping blocks 608, and then the driving motor 2 is started to drive the double-threaded rod 3 to rotate, and the double-threaded rod 3 will drive the second internal thread plate 609 to approach the direction of the adaptation plate 1 704, and the second internal thread plate 609 will drive the rotating round block 610 to move, and the rotating round block 610 will drive several connecting long plates 611 to move, and the connecting long plates 611 will drive several clamping plates 607 to approach each other, and the clamping plates 607 will drive several arc-surface clamping blocks 608 to approach each other, and the arc-surface clamping blocks 608 will contact the valve 4 and clamp the valve 4 in the process of approaching each other, and the rubber block on the arc surface of the arc-surface clamping block 608 will be close to the valve 4 to improve the clamping effect of the valve 4 through the friction of the rubber block, so as to prevent the valve 4 from being unstable during the rotation process, resulting in uneven fluorine coating injection molding;

[0058] The electric telescopic rod 804 is started, and the electric telescopic rod 804 pushes the push plate 805 to move away from the valve 4. The push plate 805 squeezes the liquid lining fluorine in the storage box 803 into the discharge pipe 802, and is discharged through the coating pipe 801 and falls on the inner wall of the valve 4. During the rotation of the double-threaded rod 3, the gear 604 is driven to rotate. The gear 604 drives the rotating plate 602 to rotate under the action of a plurality of teeth 603. The rotating plate 602 drives the clamping plate 607 to rotate, and the clamping plate 607 drives the arc clamping block 608 to rotate. The arc clamping block 608 will drive the valve 4 to rotate. At this time, the liquid lining will be evenly coated on the inner wall of the valve 4 under the high-speed rotation of the valve 4; the double-threaded rod 3 will drive a number of suction fan blades 503 to rotate during the rotation. The suction fan blades 503 will generate a suction force, which will suck the outside air into the wind box 502 through the air inlet hole 505 and blow it into the heating box 507 through the connecting pipe 506. The heating of the air outlet pipe 508 will turn the air entering the heating box 507 into hot air, and the hot air will be discharged from the air outlet pipe 508. The hot air is blown into the annular cavity 509, and then the hot air is blown out from a plurality of arc-shaped exhaust slots 510 to dry the liquid fluorine lining coated on the inner wall of the valve 4, thereby improving the curing efficiency of the fluorine lining, avoiding uneven fluorine lining on the inner wall of the valve 4 and volatiles being sealed in the coating before being completely discharged, thereby improving the quality of fluorine lining injection molding; in the process of the internal thread plate 1 501 moving toward the valve 4, it will contact the adaptation plate 2 705 and push the adaptation plate 2 705 to move, at this time, the adaptation spring 703 is compressed and deformed, and when the internal thread plate 1 501 is detached After leaving the threads on the double-threaded rod 3, the internal thread plate 1 501 will press against the adaptation plate 2 705 under the elastic force of the adaptation spring 703. At this time, the internal thread plate 1 501 will be in a semi-disconnected state. In the process of the internal thread plate 2 609 moving away from the valve 4, it will also contact the adaptation plate 1 704 and push the adaptation plate 1 704 to move. The effect is the same as above. At this time, it will not affect the normal rotation of the double-threaded rod 3, and the internal thread plate 1 501 and the internal thread plate 2 609 are also in place one after another, thereby improving the flexibility of the device.

[0059] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A fluorine-lined valve hot die injection mold, including a U-shaped base (1), a driving motor (2) is fixedly installed on the back of the U-shaped base (1), a double threaded rod (3) is rotatably installed on the U-shaped base (1), the double threaded rod (3) penetrates through the U-shaped base (1), the end of the double threaded rod (3) is fixedly connected to the output shaft of the driving motor (2), a valve (4) is arranged above the U-shaped base (1), characterized in that, Further comprising: A drying mechanism (5), the drying mechanism (5) includes an inner threaded plate one (501) threadedly sleeved on the double threaded rod (3), a wind box (502) is fixedly installed on the front surface of the U-shaped base (1), several suction fan blades (503) are fixedly installed on the double threaded rod (3), a cleaning plate (504) is fixedly installed on the double threaded rod (3), the cleaning plate (504) is in contact with the front surface of the wind box (502), several air inlet holes (505) are opened on the front surface of the wind box (502), a connecting pipe (506) is fixedly installed on the top of the wind box (502), a heating box (507) is fixedly installed on the top of the U-shaped base (1), the end of the connecting pipe (506) communicates with the heating box (507), several heating pipes are arranged in the heating box (507), an air outlet pipe (508) is fixedly installed on the top of the heating box (507), an annular cavity (509) is opened in the inner threaded plate one (501), several arc-shaped exhaust grooves (510) are opened on the back inner wall of the annular cavity (509), and the end of the air outlet pipe (508) communicates with the annular cavity (509).

2. A fluorine-lined valve hot mold injection mold according to claim 1, characterized in that: An L-shaped annular plate (5101) is rotatably installed on the back surface of the inner threaded plate one (501), several telescopic springs (511) are fixedly installed on the back inner wall of the L-shaped annular plate (5101), the ends of several telescopic springs (511) are fixedly installed with an annular plate (512), the outer wall of the annular plate (512) is in contact with the L-shaped annular plate (5101), and the back surface of the annular plate (512) is in contact with the valve (4).

3. A fluorine-lined valve hot mold injection mold according to claim 2, characterized in that: A rotating mechanism (6) is arranged on the U-shaped base (1), the rotating mechanism (6) includes a fixed frame (601) fixedly installed on the top of the U-shaped base (1), a rotating plate (602) is rotatably installed in the fixed frame (601), several teeth (603) are fixedly installed on the outer wall of the rotating plate (602), a gear (604) is fixedly sleeved on the double threaded rod (3), and the gear (604) meshes with several teeth (603).

4. A fluorine-lined valve hot mold injection mold according to claim 3, characterized in that: Several cross grooves (605) are opened in the rotating plate (602), telescopic springs (606) are respectively fixedly installed on the inner walls of the mutually remote sides of several cross grooves (605), clamping plates (607) are respectively fixedly installed at the mutually approaching ends of several telescopic springs (606), arc-shaped clamping blocks (608) are respectively fixedly installed on the mutually approaching sides of several clamping plates (607), and several rubber blocks are respectively fixedly installed on the arc surfaces of several arc-shaped clamping blocks (608).

5. A fluorine-lined valve hot mold injection mold according to claim 4, characterized in that: An inner threaded plate two (609) is threadedly sleeved on the double threaded rod (3), a rotating round block (610) is rotatably installed on the front surface of the inner threaded plate two (609), connecting long plates (611) are respectively hingedly installed at the ends of several clamping plates (607), and the ends of several connecting long plates (611) are all hinged to the rotating round block (610).

6. A fluorine-lined valve hot mold injection mold according to claim 5, characterized in that: The front and back of the fixing frame (601) are provided with an adaptation mechanism (7). The adaptation mechanism (7) includes a U-shaped fixing plate (701) fixedly installed on the front and back of the fixing frame (601). On the sides of the U-shaped fixing plate (701) and the limiting rod (702) away from each other, limiting rods (702) are fixedly installed respectively. The two ends of the two limiting rods (702) away from each other are fixedly connected to the U-shaped base (1). Adaptation springs (703) are sleeved on the two limiting rods (702) respectively. An adaptation plate one (704) and an adaptation plate two (705) are slidably sleeved on the two limiting rods (702) respectively. The ends of the two adaptation springs (703) away from each other are fixedly connected to the U-shaped base (1) and the adaptation plate two (705) respectively. The ends of the two adaptation springs (703) close to each other are fixedly connected to the adaptation plate two (705) and the U-shaped base (1) respectively. The front of the adaptation plate two (705) is in contact with the internal thread plate one (501). The front of the adaptation plate one (704) is in contact with the internal thread plate two (609).

7. A fluorine-lined valve hot mold injection mold according to claim 6, characterized in that: A coating mechanism (8) is provided on the internal thread plate one (501). The coating mechanism (8) includes a coating pipe (801) fixedly installed on the internal thread plate one (501). Two discharge pipes (802) are fixedly installed at the bottom of the coating pipe (801). A storage tank (803) is fixedly installed on the top of the U-shaped base (1). The bottom ends of the two discharge pipes (802) are fixedly connected to the storage tank (803). Two electric telescopic rods (804) are fixedly installed on the top of the U-shaped base (1). The output ends of the two electric telescopic rods (804) extend into the storage tank (803) and are slidably connected to the storage tank (803). A push plate (805) is fixedly installed at the output ends of the two electric telescopic rods (804).

8. A method for using a fluorine-lined valve hot mold injection mold, using the fluorine-lined valve hot mold injection mold as claimed in claim 7, characterized in that: The method steps are as follows: S1: Fix the valve; S2: Seal the ventilation opening; S3: Coat with fluorine lining; S4: Dry and inject plastic.

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