Die for processing pressure sensor

Abstract

The invention discloses a mold for processing a pressure sensor, and relates to the technical field of injection molds. The mold comprises a fixed mold body, a center cylinder is fixedly connected to the center of the bottom of the inner side face of the fixed mold body, a side cylinder is further fixedly connected to the bottom of the inner side face of the fixed mold body, cross holes are formed in the sides, away from the fixed mold body, of the side cylinder and the center cylinder, a feeding pipe is arranged on the side face of the fixed mold body, and a discharging pipe is arranged on the side, away from the feeding pipe, of the fixed mold body and is conical. The diameter of the end, away from the feeding pipe, of the discharging pipe is small, the conical discharging pipe reduces the circulation area of raw materials discharged out of the discharging pipe, enough pressure is obtained in the fixed die and the movable die, the gap between the fixed die and the movable die can be completely filled with the raw materials, the gap between the fixed die and the movable die can be evenly dispersed all around due to the arrangement of the cross-shaped hole, and the sealing effect is good. And the movable mold can be uniformly separated from the formed pressure sensor shell, so that rapid demolding of the movable mold is realized.

Description

Technical Field

[0001] The invention relates to the technical field of injection molds, and in particular to a mold for processing a pressure sensor. Background Art

[0002] A pressure sensor is a device that can convert pressure signals into electrical signals or other measurable signals. It is usually composed of sensitive elements, conversion elements, and measuring circuits. The sensitive elements sense pressure and produce corresponding deformation or displacement. The conversion elements convert these non-electrical signals into electrical signals. The measuring circuit amplifies, processes, and converts the electrical signals for easy display, recording, and control. It has the advantages of high precision, good stability, fast response speed, and strong reliability. It is widely used in many fields such as industrial automation, aerospace, automobiles, medical treatment, and meteorology. It can be used to measure the pressure of various media such as gas and liquid, and provide important pressure data information for system monitoring, control, and optimization. The shells of pressure sensors are mostly made of plastic materials, and injection molding is usually used in production. A suitable mold is required for injection molding. After molding, the pressure sensor shell is difficult to remove from the mold. The existing demolding structures are mostly ejector pins, push plates, pneumatic ejectors, etc. Among them, contact-type demolding will leave marks on the surface of the workpiece, and pneumatic ejectors are easily affected by dust and moisture in the environment, which can easily affect the surface quality of the workpiece after molding. Therefore, we proposed a mold for pressure sensor processing. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a mold for processing a pressure sensor, comprising: A bottom plate, a movable mold is arranged on the top of the bottom plate, a molding mechanism is arranged on a side of the movable mold close to the bottom plate, and an inner side surface of the molding mechanism is slidably connected to a surface of the movable mold; A demoulding mechanism, wherein the demoulding mechanism is fixedly connected to a side of the molding mechanism close to the bottom plate, and the demoulding mechanism is fixedly connected to the top of the bottom plate; Wherein, the forming mechanism comprises: A fixed mold, wherein a central tube is fixedly connected to the center of the bottom of the inner side surface of the fixed mold, and a side tube is also fixedly connected to the bottom of the inner side surface of the fixed mold, and a cross hole is opened on the side of the side tube and the central tube away from the fixed mold; A feeding pipe, wherein the feeding pipe is arranged on the side of the fixed mold, and the outer side of the feeding pipe is fixedly connected to the inner side of the fixed mold, a discharge pipe is arranged on the side of the fixed mold away from the feeding pipe, and the outer side of the discharge pipe is fixedly connected to the inner side of the fixed mold, the discharge pipe is arranged in a conical shape, and the end of the discharge pipe away from the feeding pipe has a smaller diameter; When the fixed mold and the movable mold are closed, the top of the center tube and the side tube are in contact with the bottom of the movable mold to close the cross hole. When feeding, the fixed mold and the movable mold are closed, the feeding pipe is connected to the raw material, the raw material passes through the feeding pipe, and the air is discharged from the discharge pipe. When the discharge pipe discharges continuous raw materials, the feeding is stopped. When the raw material solidifies, air is filled into the center tube and the side tube through the demoulding mechanism. The air is intermittently filled to gradually separate the movable mold from the formed pressure sensor housing. The conical discharge pipe reduces the flow area of ​​the raw material discharge discharge pipe. Sufficient pressure is obtained inside the fixed mold and the movable mold, so that the raw material can completely fill the gap between the fixed mold and the movable mold. The opening of the cross hole allows the filled air to be evenly dispersed around, which can evenly separate the movable mold from the formed pressure sensor housing, realize the rapid demoulding of the movable mold, drive the movable mold to rise, and after the mold is opened, the molded housing and the fixed mold are peeled off to complete the demoulding of the plastic flange-shaped housing of the pressure sensor.

[0004] Furthermore, there are several side tubes, and the side tubes are evenly distributed along the circumference of the center tube. The edges of the cross holes away from the fixed mold are provided with slopes. The side tubes are used for the preliminary forming of the bolt holes of the flange shell. The center tube cooperates with the movable mold to form a tubular structure of the flange shell. A flange plate of the flange shell is formed between the fixed mold and the movable mold. The edge of the cross hole with a slope can obtain oblique pressure when air is filled, so that the air can better enter the vicinity of the cross hole, obtain a wider range of peeling effect, and achieve a better demolding effect.

[0005] Furthermore, the demolding mechanism includes a shell, which is fixedly connected to a side of the fixed mold close to the bottom plate, and the shell is fixedly connected to the top of the bottom plate, the top of the bottom plate is also fixedly connected with an opening and closing component, the opening and closing component is arranged on the outside of the shell, and the side of the opening and closing component away from the bottom plate is fixedly connected to a side of the movable mold away from the fixed mold, the inner side surface of the shell is fixedly connected with a pneumatic ejection component, the opening and closing component is used to drive the movable mold to rise and fall to open and close the mold, and the pneumatic ejection component is used to fill air into the center tube and the side tube to achieve demolding.

[0006] Furthermore, the opening and closing assembly includes a bracket, which is fixedly connected to a side of the movable mold away from the bottom plate, and one end of the bracket away from the movable mold is fixedly connected to a connecting sleeve, and three connecting sleeves are evenly distributed along the circumference of the movable mold, and the inner sides of the three connecting sleeves are fixedly connected to a telescopic rod, and the output end of the telescopic rod is fixedly connected to the connecting sleeve, and the side of the telescopic rod away from the connecting sleeve is fixedly connected to the top of the bottom plate, and the telescopic rod is started, and the output end of the telescopic rod drives the connecting sleeve to rise and fall, drives the bracket to rise and fall, and thereby drives the movable mold to rise and fall, thereby realizing the opening and closing of the movable mold and the fixed mold.

[0007] Further, the pneumatic ejection assembly includes a central tube, the outer side surface of the central tube is rotatably connected to the inner side surface of the central tube, the inner sides of a plurality of the side tubes are rotatably connected to the side tubes, the inner sides of the central tube and the side tubes are fixedly connected to a cross baffle, the end of the central tube away from the fixed mold is provided with a driving assembly, the output end of the driving assembly is fixedly connected to the side of the central tube and the side tube away from the fixed mold, the side of the driving assembly away from the fixed mold is provided with a partition, the side of the partition away from the driving assembly is provided with an injection assembly, and the side of the injection assembly away from the partition is connected to the shell The bottom of the inner side of the body is fixedly connected, and the output end of the jet assembly is connected with the central tube and the side tube. When demolding, the jet assembly is started, and air is filled into the central tube and the side tube by the jet assembly. The cross baffle blocks the cross hole, and the pressure between the central tube and the side tube rises. Then the driving assembly is started, and the driving assembly drives the central tube and the side tube to rotate. The cross baffle blocks the cross hole intermittently, and the central tube and the side tube intermittently spray gas to peel off the movable mold and the flange shell. The intermittent jetting can gradually expand the peeling position, which can avoid excessive tearing force at one time, resulting in damage to the flange shell.

[0008] Furthermore, the driving assembly includes a center tooth, the inner side surface of the center tooth is fixedly connected to the outer side surface of the center tube, the outer side surface of the side tube is fixedly connected with a side tooth, and the center tooth is meshingly connected to the side tooth, driving the center tube to rotate, driving the center tooth to rotate, driving the side tooth meshingly connected to rotate, and the side tooth drives the side tube to rotate, cooperating with the cross baffle to block the cross hole, thereby realizing intermittent jetting.

[0009] Furthermore, a driven tooth is provided on the side of the center tooth close to the fixed mold, the inner side surface of the driven tooth is fixedly connected to the outer side surface of the center tube, the side surface of the driven tooth is meshingly connected with a driving tooth, the side of the driving tooth close to the fixed mold is fixedly connected to an electric rotating rod, the end of the electric rotating rod away from the driving tooth is fixedly connected to the side of the fixed mold close to the center tooth, and the output end of the electric rotating rod is fixedly connected to the center of the driving tooth, and the electric rotating rod is started, and the output end of the electric rotating rod drives the driving tooth to rotate, the driving tooth drives the driven tooth to rotate, drives the center tube to rotate, drives the center tooth to rotate, and drives the side tooth to rotate.

[0010] Further, the jet assembly includes a central air pipe, the outer side surface of the central air pipe is connected to the inner side surface of the central pipe in a limited rotation manner, the end of the central air pipe away from the central pipe passes through the partition, and the outer side surface of the central air pipe is fixedly connected to the inner side surface of the partition, the side of the central air pipe away from the partition is provided with a hole, the inner side surface of the side pipe is connected to the side air pipe in a limited rotation manner, the end of the side air pipe away from the central pipe passes through the partition, and the outer side surface of the side air pipe is fixedly connected to the inner side surface of the partition, the side of the side air pipe away from the partition is provided with a hole, the gas enters from the sides of the central air pipe and the side air pipe, and finally the gas enters the central pipe and the side pipe to achieve inflation.

[0011] Furthermore, a limiting plate is provided on the side of the partition away from the central tube, and a connecting column is provided at the interval between the limiting plate and the partition, and both ends of the connecting column are respectively fixedly connected to the side where the limiting plate and the partition are close to each other, and the inner side surface of the limiting plate is respectively fixedly connected to the outer side surfaces of the central air pipe and the side air pipe, and the limiting plate cooperates with the partition to limit the two ends of the central air pipe and the side air pipe to avoid shaking of the two during inflation, avoid shaking of the central tube and the side tube, thereby causing wear between the central teeth and the side teeth and extending the service life.

[0012] Furthermore, an airbag is arranged directly below the limiting plate, a cushion block is fixedly connected to the side of the airbag away from the limiting plate, and the cushion block is symmetrically arranged on the side of the airbag away from the limiting plate, the cushion block is fixedly connected to the bottom of the inner side surface of the shell, a curved pipe is fixedly connected to the side of the airbag close to the cushion block, an end of the curved pipe away from the airbag is fixedly connected to the pump body, an outer side surface of the pump body is fixedly connected to a side where two cushion blocks are close to each other, an end of the pump body away from one end of the curved pipe is fixedly connected to an air inlet pipe, and an end of the air inlet pipe away from the pump body passes through the side surface of the shell, and The outer side surface of the air inlet pipe is fixedly connected to the inner side surface of the shell, and the pump body is started. The pump body drives the gas to pass through the air inlet pipe, the pump body, and the bent pipe in sequence, and finally enters the air bag. The air bag expands, and squeezes the air at the bottom of the shell into the central air pipe and the side air pipe. The air pressure at the bottom of the shell is increased by expanding the air bag, and the air is pushed into the central air pipe and the side air pipe. This can prevent outside air from directly entering the central air pipe and the side air pipe, and can prevent impurities in the external environment from contacting the flange shell, avoid impurities adhesion, ensure molding quality, and reduce the air filtration process compared to traditional pneumatic ejection.

[0013] The present invention has the beneficial effects: 1. The present invention sets a molding mechanism, and air is discharged from the discharge pipe. When the discharge pipe discharges continuous raw materials, the feeding is stopped. The conical discharge pipe reduces the flow area of ​​the raw materials discharged from the discharge pipe, and the fixed mold and the movable mold obtain sufficient pressure inside, so that the raw materials can completely fill the gap between the fixed mold and the movable mold.

[0014] 2. The present invention sets a cross hole, and the opening of the cross hole allows the filled air to be evenly dispersed to the surroundings, and can evenly separate the movable mold from the formed pressure sensor housing, so as to achieve rapid demolding of the movable mold. The cross hole has a sloped edge, and the air can obtain oblique pressure when it is filled, so that the air can better enter the vicinity of the cross hole, obtain a wider range of peeling effect, and achieve a better demolding effect.

[0015] 3. The present invention sets a cross baffle, and the rotation of the side tube drives the cross baffle to rotate, and the cross hole is blocked by the cross baffle to achieve intermittent air jetting. The intermittent air jetting can gradually expand the stripping position, which can avoid excessive tearing force at one time, resulting in damage to the flange shell.

[0016] 4. The present invention sets a limit plate, which cooperates with the partition to limit the two ends of the central air pipe and the side air pipe to avoid shaking of the two during inflation, avoid shaking of the central pipe and the side pipe, thereby causing wear between the central teeth and the side teeth and extending the service life.

[0017] 5. The present invention sets a jet assembly and pushes air into the central air pipe and the side air pipe by inflating the airbag to increase the air pressure at the bottom of the shell, thereby preventing outside air from directly entering the central air pipe and the side air pipe, preventing impurities and moisture in the external environment from contacting the flange shell, preventing impurities and moisture from adhering, and ensuring the surface quality of the flange shell. Compared with traditional pneumatic ejection, the air filtration process is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of a mold for processing a pressure sensor of the present invention; Figure 2 This is a schematic diagram of another viewing angle of the mold for processing the pressure sensor of the present invention; Figure 3 It is a structural schematic diagram of the molding mechanism of the present invention; Figure 4 This is a schematic diagram of the fixed mold cross-section structure of the present invention; Figure 5 This is a schematic diagram of the structure of the opening and closing assembly of the present invention; Figure 6 This is a schematic diagram of the structure of the pneumatic ejection assembly of the present invention; Figure 7 This is a schematic diagram of the structure of the drive assembly of the present invention; Figure 8 It is a schematic diagram of the structure of the jet assembly of the present invention.

[0019] In the figure: 1, bottom plate; 2, movable mold; 3, molding mechanism; 31, fixed mold; 32, feeding pipe; 33, discharging pipe; 34, center tube; 35, side tube; 36, cross hole; 4, demoulding mechanism; 41, shell; 42, opening and closing assembly; 421, bracket; 422, telescopic rod; 423, connecting sleeve; 43, pneumatic ejection assembly; 431, center tube; 432, side tube; 433, cross baffle; 434, drive dynamic assembly; 4341, center gear; 4342, side gear; 4343, driven gear; 4344, driving gear; 4345, electric rotating rod; 435, partition; 436, jet assembly; 4361, center air pipe; 4362, side air pipe; 4363, limit plate; 4364, connecting column; 4365, air bag; 4366, cushion block; 4367, elbow; 4368, pump body; 4369, intake pipe. DETAILED DESCRIPTION

[0020] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0021] Example 1, please refer to Figure 1-Figure 4 The present invention is a mold for processing a pressure sensor, comprising: A bottom plate 1, a movable mold 2 is arranged on the top of the bottom plate 1, a molding mechanism 3 is arranged on the side of the movable mold 2 close to the bottom plate 1, and the inner side surface of the molding mechanism 3 is slidably connected with the surface of the movable mold 2; The demoulding mechanism 4 is fixedly connected to the side of the molding mechanism 3 close to the bottom plate 1, and the demoulding mechanism 4 is fixedly connected to the top of the bottom plate 1; Wherein, the forming mechanism 3 comprises: The fixed mold 31 has a central tube 34 fixedly connected to the center of the bottom of the inner side of the fixed mold 31, and a side tube 35 fixedly connected to the bottom of the inner side of the fixed mold 31. The side of the side tube 35 and the side of the central tube 34 away from the fixed mold 31 are both provided with a cross hole 36; A feeding pipe 32 is provided on the side of the fixed mold 31, and the outer side of the feeding pipe 32 is fixedly connected to the inner side of the fixed mold 31. A discharge pipe 33 is provided on the side of the fixed mold 31 away from the feeding pipe 32, and the outer side of the discharge pipe 33 is fixedly connected to the inner side of the fixed mold 31. The discharge pipe 33 is set in a cone shape, and the end of the discharge pipe 33 away from the feeding pipe 32 has a smaller diameter; When the fixed mold 31 is molded with the movable mold 2, the top of the central tube 34 and the side tube 35 are in contact with the bottom of the movable mold 2, and the cross hole 36 is closed. When feeding, the fixed mold 31 is molded with the movable mold 2, and the feeding pipe 32 is connected to the raw material. The raw material passes through the feeding pipe 32, and the air is discharged from the discharge pipe 33. When the discharge pipe 33 discharges continuous raw materials, the feeding is stopped. When the raw materials are solidified, air is filled into the central tube 34 and the side tube 35 through the demoulding mechanism 4. The air is intermittently filled to gradually separate the movable mold 2 from the formed pressure sensor housing, and the cone The discharge pipe 33 is shaped to reduce the flow area of ​​the raw material discharged from the discharge pipe 33, and sufficient pressure is obtained inside the fixed mold 31 and the movable mold 2, so that the raw material can completely fill the gap between the fixed mold 31 and the movable mold 2. The cross hole 36 is opened so that the filled air can be evenly dispersed to the surroundings, and the movable mold 2 can be evenly separated from the molded pressure sensor housing, so that the movable mold 2 can be quickly demolded, and the movable mold 2 can be driven to rise. After the mold is opened, the molded housing and the fixed mold 31 are peeled off to complete the demolding of the plastic flange-shaped housing of the pressure sensor.

[0022] A plurality of side tubes 35 are provided, and the plurality of side tubes 35 are evenly distributed along the circumference of the center tube 34. The edges of the cross holes 36 away from the fixed mold 31 are provided with slopes. The plurality of side tubes 35 are used for the preliminary forming of the bolt holes of the flange shell. The center tube 34 cooperates with the movable mold 2 to form a tubular structure of the flange shell. A flange plate of the flange shell is formed between the fixed mold 31 and the movable mold 2. The cross holes 36 with a slope on the edges can obtain oblique pressure when air is filled, so that the air can better enter the vicinity of the cross holes 36, obtain a wider range of peeling effect, and achieve a better demolding effect.

[0023] Example 2, please refer to Figure 1-Figure 8 The demolding mechanism 4 includes a shell 41, which is fixedly connected to a side of the fixed mold 31 close to the bottom plate 1, and the shell 41 is fixedly connected to the top of the bottom plate 1. An opening and closing component 42 is also fixedly connected to the top of the bottom plate 1. The opening and closing component 42 is arranged on the outside of the shell 41, and the side of the opening and closing component 42 away from the bottom plate 1 is fixedly connected to a side of the movable mold 2 away from the fixed mold 31. A pneumatic ejection component 43 is fixedly connected to the inner side of the shell 41. The opening and closing component 42 is used to drive the movable mold 2 to rise and fall to open and close the mold. The pneumatic ejection component 43 is used to fill air into the center tube 34 and the side tube 35 to realize demolding.

[0024] The opening and closing assembly 42 includes a bracket 421, which is fixedly connected to a side of the movable mold 2 away from the bottom plate 1. One end of the bracket 421 away from the movable mold 2 is fixedly connected to a connecting sleeve 423, and three connecting sleeves 423 are evenly distributed along the circumference of the movable mold 2, and the inner sides of the three connecting sleeves 423 are fixedly connected to a telescopic rod 422, the output end of the telescopic rod 422 is fixedly connected to the connecting sleeve 423, and the side of the telescopic rod 422 away from the connecting sleeve 423 is fixedly connected to the top of the bottom plate 1. When the telescopic rod 422 is started, the output end of the telescopic rod 422 drives the connecting sleeve 423 to rise and fall, drives the bracket 421 to rise and fall, thereby drives the movable mold 2 to rise and fall, and realizes the opening and closing of the movable mold 2 and the fixed mold 31.

[0025] The pneumatic ejection assembly 43 includes a central tube 431, the outer side surface of the central tube 431 is rotatably connected to the inner side surface of the central tube 34, the inner sides of the plurality of side tubes 35 are rotatably connected to the side tubes 432, the inner sides of the central tube 431 and the side tubes 432 are fixedly connected to the cross baffles 433, the end of the central tube 431 away from the fixed mold 31 is provided with a driving assembly 434, the output end of the driving assembly 434 is fixedly connected to the side of the central tube 431 and the side tube 432 away from the fixed mold 31, the side of the driving assembly 434 away from the fixed mold 31 is provided with a partition 435, the side of the partition 435 away from the driving assembly 434 is provided with an injection assembly 436, the side of the injection assembly 436 away from the partition 435 is connected to the inner side surface of the shell 41 The bottom is fixedly connected, and the output end of the jet assembly 436 is connected to the central tube 431 and the side tube 432. When demolding, the jet assembly 436 is started, and the jet assembly 436 fills air into the central tube 431 and the side tube 432. The cross baffle 433 blocks the cross hole 36, and the pressure between the central tube 431 and the side tube 432 rises. Then the driving assembly 434 is started, and the driving assembly 434 drives the central tube 431 and the side tube 432 to rotate, and the cross baffle 433 intermittently blocks the cross hole 36. The central tube 34 and the side tube 35 intermittently spray gas to peel off the movable mold 2 and the flange shell. The intermittent jetting can gradually expand the peeling position, which can avoid excessive tearing force at one time, resulting in damage to the flange shell.

[0026] The driving assembly 434 includes a center tooth 4341, the inner side surface of the center tooth 4341 is fixedly connected to the outer side surface of the center tube 431, the outer side surface of the side tube 432 is fixedly connected with the side tooth 4342, and the center tooth 4341 is meshingly connected with the side tooth 4342, driving the center tube 431 to rotate, thereby driving the center tooth 4341 to rotate, driving the side tooth 4342 meshingly connected thereto to rotate, and the side tooth 4342 drives the side tube 432 to rotate, cooperating with the cross baffle 433 to block the cross hole 36, thereby realizing intermittent jetting.

[0027] A driven tooth 4343 is provided on the side of the center tooth 4341 close to the fixed mold 31, the inner side surface of the driven tooth 4343 is fixedly connected to the outer side surface of the center tube 431, the side of the driven tooth 4343 is meshedly connected with a driving tooth 4344, and the side of the driving tooth 4344 close to the fixed mold 31 is fixedly connected to an electric rotating rod 4345, one end of the electric rotating rod 4345 away from the driving tooth 4344 is fixedly connected to the side of the fixed mold 31 close to the center tooth 4341, and the output end of the electric rotating rod 4345 is fixedly connected to the center of the driving tooth 4344, and the electric rotating rod 4345 is started, and the output end of the electric rotating rod 4345 drives the driving tooth 4344 to rotate, and the driving tooth 4344 drives the driven tooth 4343 to rotate, drives the center tube 431 to rotate, drives the center tooth 4341 to rotate, and drives the side tooth 4342 to rotate.

[0028] The jet assembly 436 includes a central air pipe 4361, the outer side surface of the central air pipe 4361 is connected to the inner side surface of the central pipe 431 in a limited rotation manner, the end of the central air pipe 4361 away from the central pipe 431 passes through the partition 435, and the outer side surface of the central air pipe 4361 is fixedly connected to the inner side surface of the partition 435, a hole is provided on the side of the central air pipe 4361 away from the partition 435, the inner side surface of the side pipe 432 is connected to the side air pipe 4362 in a limited rotation manner, the end of the side air pipe 4362 away from the central pipe 431 passes through the partition 435, and the outer side surface of the side air pipe 4362 is fixedly connected to the inner side surface of the partition 435, a hole is provided on the side of the side air pipe 4362 away from the partition 435, and the gas enters from the sides of the central air pipe 4361 and the side air pipe 4362, and finally the gas enters the central pipe 431 and the side pipe 432 to achieve inflation.

[0029] A limiting plate 4363 is provided on the side of the partition 435 away from the central tube 431, and a connecting column 4364 is provided at the interval between the limiting plate 4363 and the partition 435, and both ends of the connecting column 4364 are respectively fixedly connected to the side of the limiting plate 4363 and the partition 435 which are close to each other, and the inner side surface of the limiting plate 4363 is respectively fixedly connected to the outer side surfaces of the central air pipe 4361 and the side air pipe 4362, and the limiting plate 4363 cooperates with the partition 435 to limit the two ends of the central air pipe 4361 and the side air pipe 4362 to avoid shaking of the two during inflation, avoid shaking of the central tube 431 and the side tube 432, thereby causing wear between the central tooth 4341 and the side tooth 4342 and extending the service life.

[0030] An airbag 4365 is provided directly below the limiting plate 4363, and a cushion block 4366 is fixedly connected to the side of the airbag 4365 away from the limiting plate 4363, and the cushion block 4366 is symmetrically arranged on the side of the airbag 4365 away from the limiting plate 4363, and the cushion block 4366 is fixedly connected to the bottom of the inner side surface of the shell 41, and a curved pipe 4367 is fixedly connected to the side of the airbag 4365 close to the cushion block 4366, and the end of the curved pipe 4367 away from the airbag 4365 is fixedly connected to the pump body 4368, and the outer side surface of the pump body 4368 is fixedly connected to the side where the two cushion blocks 4366 are close to each other, and one end of the pump body 4368 away from the curved pipe 4367 is fixedly connected to the air inlet pipe 4369, and the end of the air inlet pipe 4369 away from the pump body 4368 passes through the side of the shell 41. The outer side of the air inlet pipe 4369 is fixedly connected to the inner side of the shell 41, and the pump body 4368 is started. The pump body 4368 drives the gas to pass through the air inlet pipe 4369, the pump body 4368, and the elbow 4367 in sequence, and finally enters the airbag 4365. The airbag 4365 expands, and squeezes the air at the bottom of the shell 41 into the central air pipe 4361 and the side air pipe 4362. The air pressure at the bottom of the shell 41 is increased by expanding the airbag 4365, which pushes the air into the central air pipe 4361 and the side air pipe 4362. The outside air can be prevented from directly entering the central air pipe 4361 and the side air pipe 4362, and the impurities in the external environment can be prevented from contacting the flange shell, thereby preventing impurities from adhering to the molding quality, ensuring the molding quality, and reducing the air filtration process compared to the traditional pneumatic ejection.

[0031] When in use, the telescopic rod 422 is started, and the output end of the telescopic rod 422 drives the connecting sleeve 423 to descend, drives the bracket 421 to descend, and thus drives the movable mold 2 to descend, so as to realize the mold closing of the movable mold 2 and the fixed mold 31. When the fixed mold 31 and the movable mold 2 are molded together, the top of the center tube 34 and the side tube 35 are in contact with the bottom of the movable mold 2, and the cross hole 36 is closed. When feeding, the fixed mold 31 and the movable mold 2 are molded together, and the feeding pipe 32 is connected to the raw material. The raw material passes through the feeding pipe 32, and the air is discharged from the discharge pipe 33. When the discharge pipe 33 is discharged After the continuous raw materials are fed, the feeding is stopped. When the raw materials are solidified, several side tubes 35 are used for the preliminary forming of the bolt holes of the flange shell. The central tube 34 cooperates with the movable mold 2 to form a tubular structure of the flange shell. The flange plate of the flange shell is formed between the fixed mold 31 and the movable mold 2. Then the mold is demolded and the pump body 4368 is started. The pump body 4368 drives the gas to pass through the air inlet pipe 4369, the pump body 4368, the elbow 4367 in turn, and finally enter the air bag 4365. The air bag 4365 expands to push the bottom of the shell 41 The air squeezes into the central air pipe 4361 and the side air pipe 4362, the central pipe 431 and the side pipe 432 are filled with air, the cross baffle 433 blocks the cross hole 36, the pressure between the central pipe 431 and the side pipe 432 rises, the electric rotating rod 4345 is started, the output end of the electric rotating rod 4345 drives the driving gear 4344 to rotate, the driving gear 4344 drives the driven gear 4343 to rotate, drives the central pipe 431 to rotate, drives the central gear 4341 to rotate, drives the side gear 4342 to rotate, and the central pipe 431 rotates. The core tube 431 and the side tube 432 rotate, so that the cross baffle 433 intermittently blocks the cross hole 36, and the central tube 34 and the side tube 35 intermittently spray gas to peel off the movable mold 2 and the flange shell, and start the telescopic rod 422. The output end of the telescopic rod 422 drives the connecting sleeve 423 to rise, drives the bracket 421 to rise, and thus drives the movable mold 2 to rise, and realizes the mold opening of the movable mold 2 and the fixed mold 31. After the mold is opened, the molded shell and the fixed mold 31 are peeled off to complete the demolding of the plastic flange-shaped shell of the pressure sensor.

[0032] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A mold for processing a pressure sensor, characterized in that: include: A bottom plate (1), a movable mold (2) being arranged on the top of the bottom plate (1), a molding mechanism (3) being arranged on a side of the movable mold (2) close to the bottom plate (1), and an inner side surface of the molding mechanism (3) being slidably connected to a surface of the movable mold (2); A demoulding mechanism (4), the demoulding mechanism (4) being fixedly connected to a side of the molding mechanism (3) close to the bottom plate (1), and the demoulding mechanism (4) being fixedly connected to the top of the bottom plate (1); Wherein, the forming mechanism (3) comprises: A fixed mold (31), wherein a center tube (34) is fixedly connected to the center of the bottom of the inner side surface of the fixed mold (31), and a side tube (35) is also fixedly connected to the bottom of the inner side surface of the fixed mold (31), and a cross hole (36) is formed on the side of the side tube (35) and the center tube (34) away from the fixed mold (31); A feeding pipe (32) is arranged on a side of the fixed mold (31), and the outer side surface of the feeding pipe (32) is fixedly connected to the inner side surface of the fixed mold (31); a discharge pipe (33) is arranged on a side of the fixed mold (31) away from the feeding pipe (32), and the outer side surface of the discharge pipe (33) is fixedly connected to the inner side surface of the fixed mold (31); the discharge pipe (33) is arranged in a conical shape, and the end of the discharge pipe (33) away from the feeding pipe (32) has a smaller diameter.

2. A pressure sensor processing mold according to claim 1, characterized in that: A plurality of the side tubes (35) are provided, and the plurality of the side tubes (35) are evenly distributed along the circumference of the center tube (34), and a slope is provided at the edge of the cross hole (36) on the side away from the fixed mold (31).

3. A mold for processing a pressure sensor according to claim 2, characterized in that: The demoulding mechanism (4) comprises a shell (41), the shell (41) being fixedly connected to a side of the fixed mold (31) close to the bottom plate (1), and the shell (41) being fixedly connected to the top of the bottom plate (1), and the top of the bottom plate (1) is also fixedly connected to an opening and closing component (42), the opening and closing component (42) being arranged on the outside of the shell (41), and a side of the opening and closing component (42) away from the bottom plate (1) is fixedly connected to a side of the movable mold (2) away from the fixed mold (31), and the inner side surface of the shell (41) is fixedly connected to a pneumatic ejection component (43).

4. A pressure sensor processing mold according to claim 3, characterized in that: The opening and closing assembly (42) comprises a bracket (421), wherein the bracket (421) is fixedly connected to a side of the movable mold (2) away from the bottom plate (1), and one end of the bracket (421) away from the movable mold (2) is fixedly connected to a connecting sleeve (423), and three connecting sleeves (423) are evenly distributed along the circumference of the movable mold (2), and the inner side surfaces of the three connecting sleeves (423) are fixedly connected to telescopic rods (422), the output end of the telescopic rod (422) is fixedly connected to the connecting sleeve (423), and the side of the telescopic rod (422) away from the connecting sleeve (423) is fixedly connected to the top of the bottom plate (1).

5. A pressure sensor processing mold according to claim 4, characterized in that: The pneumatic ejection assembly (43) comprises a central tube (431), the outer side surface of the central tube (431) being rotatably connected to the inner side surface of the central tube (34), the inner sides of a plurality of the side tubes (35) being rotatably connected to the side tubes (432), the inner sides of the central tube (431) and the side tubes (432) being fixedly connected to a cross baffle (433), the end of the central tube (431) away from the fixed mold (31) being provided with a drive assembly (434), the output end of the drive assembly (434) being connected to the central tube The central tube (431) and the side tube (432) are fixedly connected at a side away from the fixed mold (31); a partition plate (435) is provided at a side away from the fixed mold (31) of the driving component (434); an injection component (436) is provided at a side away from the driving component (434); a side away from the partition plate (435) is fixedly connected to the bottom of the inner side surface of the shell (41); and an output end of the injection component (436) is communicated with the central tube (431) and the side tube (432).

6. A mold for processing a pressure sensor according to claim 5, characterized in that: The driving assembly (434) comprises a central tooth (4341), the inner side surface of the central tooth (4341) being fixedly connected to the outer side surface of the central tube (431), the outer side surface of the side tube (432) being fixedly connected to the side tooth (4342), and the central tooth (4341) being meshingly connected to the side tooth (4342).

7. A mold for processing a pressure sensor according to claim 6, characterized in that: A driven tooth (4343) is provided on a side of the center tooth (4341) close to the fixed mold (31); the inner side surface of the driven tooth (4343) is fixedly connected to the outer side surface of the center tube (431); the side surface of the driven tooth (4343) is meshingly connected to a driving tooth (4344); an electric rotating rod (4345) is fixedly connected to a side of the driving tooth (4344) close to the fixed mold (31); an end of the electric rotating rod (4345) away from the driving tooth (4344) is fixedly connected to a side of the fixed mold (31) close to the center tooth (4341); and an output end of the electric rotating rod (4345) is fixedly connected to the center of the driving tooth (4344).

8. A pressure sensor processing mold according to claim 7, characterized in that: The jet assembly (436) comprises a central air pipe (4361), the outer side surface of the central air pipe (4361) is connected to the inner side surface of the central pipe (431) in a limited rotation manner, the end of the central air pipe (4361) away from the central pipe (431) passes through the partition (435), and the outer side surface of the central air pipe (4361) is fixedly connected to the inner side surface of the partition (435), and a hole is provided on the side of the central air pipe (4361) away from the partition (435), and the inner side surface of the side pipe (432) is connected to the side air pipe (4362) in a limited rotation manner, the end of the side air pipe (4362) away from the central pipe (431) passes through the partition (435), and the outer side surface of the side air pipe (4362) is fixedly connected to the inner side surface of the partition (435), and a hole is provided on the side of the side air pipe (4362) away from the partition (435).

9. A mold for processing a pressure sensor according to claim 8, characterized in that: A limiting plate (4363) is provided on the side of the partition (435) away from the central tube (431), and a connecting column (4364) is provided at the interval between the limiting plate (4363) and the partition (435), and both ends of the connecting column (4364) are respectively fixedly connected to the limiting plate (4363) and the side of the partition (435) close to each other, and the inner side surface of the limiting plate (4363) is respectively fixedly connected to the outer side surfaces of the central air pipe (4361) and the side air pipe (4362).

10. A mold for processing a pressure sensor according to claim 9, characterized in that: An airbag (4365) is arranged directly below the limiting plate (4363), a cushion block (4366) is fixedly connected to the side of the airbag (4365) away from the limiting plate (4363), and the cushion block (4366) is symmetrically arranged on the side of the airbag (4365) away from the limiting plate (4363), the cushion block (4366) is fixedly connected to the bottom of the inner side surface of the shell (41), and a curved pipe (4367) is fixedly connected to the side of the airbag (4365) close to the cushion block (4366), and the curved pipe (4367) is fixedly connected to the bottom of the inner side surface of the shell (41). An end of the pump body (4367) away from the airbag (4365) is fixedly connected to a pump body (4368), an outer side surface of the pump body (4368) is fixedly connected to a side of the two cushion blocks (4366) close to each other, an end of the pump body (4368) away from an end of the bent pipe (4367) is fixedly connected to an air intake pipe (4369), an end of the air intake pipe (4369) away from the pump body (4368) passes through the side surface of the shell (41), and the outer side surface of the air intake pipe (4369) is fixedly connected to the inner side surface of the shell (41).

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