A mold for processing a pressure sensor

Abstract

The application discloses a mold for processing a pressure sensor, and relates to the technical field of injection molds.The mold comprises a fixed mold, a center cylinder is fixedly connected to the center of the bottom of the inner side surface of the fixed mold, an edge cylinder is also fixedly connected to the bottom of the inner side surface of the fixed mold, cross holes are formed in the sides of the center cylinder and the edge cylinder away from the fixed mold, a feeding pipe is arranged on the side of the fixed mold, a discharging pipe is arranged on the side of the fixed mold away from the feeding pipe, the discharging pipe is conical, the diameter of the end of the discharging pipe away from the feeding pipe is small, the conical discharging pipe reduces the flow area of the raw materials discharged from the discharging pipe, enough pressure is obtained in the fixed mold and the movable mold, so that the raw materials can completely fill the gap between the fixed mold and the movable mold, the cross holes are arranged, so that the filled air can be uniformly dispersed to the surroundings, the movable mold and the formed pressure sensor shell can be uniformly separated, and rapid demolding of the movable mold is realized.

Description

Technical Field

[0001] The present 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 measurement circuits. The sensitive elements sense pressure and produce corresponding deformation or displacement. The conversion elements convert these non-electrical signals into electrical signals. The measurement 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, automobile, medical treatment, meteorology, etc. 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.

[0003] The shells of pressure sensors are mostly made of plastic and are usually produced by injection molding. 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 workpiece surface, and pneumatic ejection is 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

[0004] In order to solve the above technical problems, the present invention provides a mold for processing a pressure sensor, comprising:

[0005] A bottom plate, a movable mold is provided on the top of the bottom plate, a molding mechanism is provided 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 the surface of the movable mold;

[0006] A demoulding mechanism, 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;

[0007] Wherein, the forming mechanism includes:

[0008] A fixed mold, wherein a central tube is fixedly connected to the center of the bottom of the inner side of the fixed mold, and a side tube is also fixedly connected to the bottom of the inner side 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;

[0009] A feeding pipe is provided 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 provided 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 configured to be conical, and the diameter of the end of the discharge pipe away from the feeding pipe is smaller;

[0010] 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, closing the cross hole. When loading, 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 materials are solidified, 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 tapered discharge pipe reduces the flow area of ​​the raw material discharge pipe. The fixed mold and the movable mold obtain sufficient pressure 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.

[0011] Furthermore, there are several side tubes, and several of 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 all provided with slopes. Several 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. The 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 in, 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.

[0012] Furthermore, the demolding mechanism includes a shell, which is fixedly connected to the side of the fixed mold close to the base plate, and the shell is fixedly connected to the top of the base plate. The top of the base plate is also fixedly connected to an opening and closing component, and 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 base plate is fixedly connected to the side of the movable mold away from the fixed mold. The inner side surface of the shell is fixedly connected to a pneumatic ejection component, and 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.

[0013] Further, the opening and closing assembly comprises a support fixedly connected to the side of the movable mold away from the bottom plate, one end of the support away from the movable mold is fixedly connected with a connecting sleeve, the connecting sleeve is uniformly distributed with three along the circumference of the movable mold, and the inner side of the three connecting sleeves is fixedly connected with an extension rod, the output end of the extension rod is fixedly connected with the connecting sleeve, and the side of the extension rod away from the connecting sleeve is fixedly connected with the top of the bottom plate. Starting the extension rod, the output end of the extension rod drives the connecting sleeve to rise and fall, drives the support to rise and fall, and drives the movable mold to rise and fall, so as to realize the opening and closing of the movable mold and the fixed mold.

[0014] Further, the pneumatic ejection assembly comprises a center pipe, the outer side of the center pipe is rotatably connected with the inner side of the center cylinder, the inner side of the plurality of side cylinders is rotatably connected with a side pipe, the inner side of the center pipe and the side pipe is fixedly connected with a cross baffle, one end of the center pipe away from the fixed mold is provided with a driving assembly, the output end of the driving assembly is fixedly connected with the center pipe and the side pipe away from the fixed mold, the side of the driving assembly away from the fixed mold is provided with a partition plate, the side of the partition plate away from the driving assembly is provided with a jetting assembly, the side of the jetting assembly away from the partition plate is fixedly connected with the inner side of the bottom of the shell, and the output end of the jetting assembly is communicated with the center pipe and the side pipe. When demolding, start the jetting assembly, the jetting assembly fills air into the center pipe and the side pipe, the cross baffle blocks the cross hole, the pressure between the center pipe and the side pipe rises, then start the driving assembly, the driving assembly drives the center pipe and the side pipe to rotate, the cross baffle intermittently blocks the cross hole, the center cylinder and the side cylinder intermittently eject gas, and the movable mold and the flange shell are peeled off. Intermittent jetting can gradually expand the peeling position, and can avoid too large tearing force at one time, so as to avoid damage to the flange shell.

[0015] Further, the driving assembly comprises a center tooth, the inner side of the center tooth is fixedly connected with the outer side of the center pipe, the outer side of the side pipe is fixedly connected with a side tooth, and the center tooth and the side tooth are engagedly connected, the center pipe is driven to rotate, the center tooth is driven to rotate, the side tooth engagedly connected with the center tooth is driven to rotate, the side tooth drives the side pipe to rotate, and the cross baffle is matched to block the cross hole, so as to realize intermittent jetting.

[0016] Further, the center tooth is provided with a driven tooth on the side close to the fixed mold, the inner side of the driven tooth is fixedly connected with the outer side of the center pipe, the side of the driven tooth is engagedly connected with a driving tooth, the driving tooth is fixedly connected with an electric rotary rod on the side close to the fixed mold, one end of the electric rotary rod away from the driving tooth is fixedly connected with the side of the fixed mold close to the center tooth, and the output end of the electric rotary rod is fixedly connected with the center of the driving tooth. Starting the electric rotary rod, the output end of the electric rotary rod drives the driving tooth to rotate, the driving tooth drives the driven tooth to rotate, the center pipe is driven to rotate, the center tooth is driven to rotate, and the side tooth is driven to rotate.

[0017] Further, the air injection assembly comprises a center air pipe, the outer side of the center air pipe is limitingly and rotatably connected with the inner side of the center pipe, the end of the center air pipe away from the center pipe penetrates the partition plate, and the outer side of the center air pipe is fixedly connected with the inner side of the partition plate, the side of the center air pipe away from the partition plate is provided with a hole, the inner side of the edge pipe is limitingly and rotatably connected with an edge air pipe, the end of the edge air pipe away from the center pipe penetrates the partition plate, and the outer side of the edge air pipe is fixedly connected with the inner side of the partition plate, the side of the edge air pipe away from the partition plate is provided with a hole, air enters from the side of the center air pipe and the edge air pipe, and finally air enters the center pipe and the edge pipe, so that inflation is realized.

[0018] Further, the side of the partition plate away from the center pipe is provided with a limiting plate, the space between the limiting plate and the partition plate is provided with a connecting column, the two ends of the connecting column are fixedly connected with the sides of the limiting plate and the partition plate close to each other, and the inner side of the limiting plate is fixedly connected with the outer sides of the center air pipe and the edge air pipe.

[0019] Further, the side of the partition plate away from the center pipe is provided with a limiting plate, the space between the limiting plate and the partition plate is provided with a connecting column, the two ends of the connecting column are fixedly connected with the sides of the limiting plate and the partition plate close to each other, and the inner side of the limiting plate is fixedly connected with the outer sides of the center air pipe and the edge air pipe.

[0020] The present application has the beneficial effects that:

[0021] 1、The present application is provided with a forming mechanism, air is discharged from the discharge pipe, after continuous raw materials are discharged from the discharge pipe, the feeding is stopped, the conical discharge pipe reduces the flow area of the raw materials discharged from the discharge pipe, sufficient pressure is obtained in the fixed mold and the movable mold, and the raw materials can completely fill the gap of the fixed mold and the movable mold.

[0022] 2. The present invention provides a cross hole. 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, thereby achieving 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 area around the cross hole, obtain a wider range of peeling effect, and achieve a better demolding effect.

[0023] 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 and cause damage to the flange shell.

[0024] 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, thereby avoiding 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.

[0025] 5. The present invention sets an air jet assembly and pushes air into the central air pipe and the side air pipe by increasing the air pressure at the bottom of the shell by inflating the airbag, which can prevent external air from directly entering the central air pipe and the side air pipe, and can prevent impurities and moisture in the external environment from contacting the flange shell, avoiding the adhesion of impurities and moisture, 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

[0026] Figure 1 This is a schematic diagram of a mold for processing a pressure sensor of the present invention;

[0027] Figure 2 This is a schematic diagram of another perspective of the mold for processing the pressure sensor of the present invention;

[0028] Figure 3 Schematic diagram of the molding mechanism structure of the present invention;

[0029] Figure 4 This is a schematic diagram of the cross-sectional structure of the fixed mold of the present invention;

[0030] Figure 5 This is a schematic diagram of the structure of the opening and closing assembly of the present invention;

[0031] Figure 6 This is a schematic diagram of the structure of the pneumatic ejection assembly of the present invention;

[0032] Figure 7 This is a schematic diagram of the structure of the drive assembly of the present invention;

[0033] Figure 8 It is a schematic diagram of the structure of the jet assembly of the present invention.

[0034] In the figure: 1, the base plate; 2, the moving die; 3, the forming mechanism; 31, the fixed die; 32, the feeding pipe; 33, the discharging pipe; 34, the center cylinder; 35, the side cylinder; 36, the cross hole; 4, the demolding mechanism; 41, the shell; 42, the opening and closing assembly; 421, the bracket; 422, the telescopic rod; 423, the connecting sleeve; 43, the pneumatic ejection assembly; 431, the center pipe; 432, the side pipe; 433, the cross baffle; 434, the driving assembly; 4341, the center tooth; 4342, the side tooth; 4343, the driven tooth; 4344, the driving tooth; 4345, the electric rotating rod; 435, the partition plate; 436, the air jet assembly; 4361, the center air pipe; 4362, the side air pipe; 4363, the limiting plate; 4364, the connecting column; 4365, the air bag; 4366, the cushion block; 4367, the elbow pipe; 4368, the pump body; 4369, the air inlet pipe. DETAILED DESCRIPTION

[0035] The application will be described in further detail below with reference to the drawings and specific embodiments. The embodiments of the application are given for illustrative and descriptive purposes only and are not intended to be exhaustive or to limit the application to the forms disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. Embodiments were chosen and described in order to best explain the principles of the application and its practical application, and to enable others skilled in the art to understand the application for various embodiments with various modifications as are suited to the particular use contemplated.

[0036] Embodiment 1, please refer to Figures 1-4 The application is a mold for processing a pressure sensor, comprising:

[0037] The base plate 1 is provided with the moving die 2 on the top, and the forming mechanism 3 is arranged on the side of the moving die 2 close to the base plate 1, and the inner side surface of the forming mechanism 3 is in sliding connection with the surface of the moving die 2;

[0038] The demolding mechanism 4 is fixedly connected to the side of the forming mechanism 3 close to the base plate 1, and the demolding mechanism 4 is fixedly connected to the top of the base plate 1;

[0039] The forming mechanism 3 comprises:

[0040] The fixed die 31 is fixedly connected with the center cylinder 34 at the bottom center of the inner side surface, and the side cylinder 35 is also fixedly connected to the inner side surface of the fixed die 31, and the side cylinder 35 and the center cylinder 34 are both provided with the cross hole 36 away from the fixed die 31;

[0041] The feeding pipe 32 is arranged on the side of the fixed mold 31, and the outer side of the feeding pipe 32 is fixedly connected with the inner side of the fixed mold 31. The side, away from the feeding pipe 32, of the fixed mold 31 is provided with a discharging pipe 33, and the outer side of the discharging pipe 33 is fixedly connected with the inner side of the fixed mold 31. The discharging pipe 33 is arranged in a conical shape, and the end, away from the feeding pipe 32, of the discharging pipe 33 has a smaller diameter.

[0042] When the fixed mold 31 and the movable mold 2 are closed, the top of the center cylinder 34 and the edge cylinder 35 is 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 closed, the feeding pipe 32 is connected with the raw material, the raw material passes through the feeding pipe 32, and the air is discharged from the discharging pipe 33. When the discharging pipe 33 continuously discharges the raw material, the feeding is stopped. When the raw material is solidified, the demolding mechanism 4 is used to fill the air into the center cylinder 34 and the edge cylinder 35 intermittently, so as to gradually separate the movable mold 2 from the formed pressure sensor shell. The conical discharging pipe 33 reduces the flow area of the raw material discharged from the discharging pipe 33, and the inside of the fixed mold 31 and the movable mold 2 obtains sufficient pressure, 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 arranged, so that the filled air can be evenly dispersed to the surrounding, the movable mold 2 and the formed pressure sensor shell can be uniformly separated, the rapid demolding of the movable mold 2 is realized, the movable mold 2 is driven to rise, and after the mold is opened, the formed shell is separated from the fixed mold 31, and the demolding of the pressure sensor plastic flange-shaped shell is completed.

[0043] The edge cylinder 35 is arranged in a plurality of numbers, and the plurality of edge cylinders 35 are uniformly distributed along the circumference of the center cylinder 34. The edge of the side, away from the fixed mold 31, of the cross hole 36 is provided with a slope. The plurality of edge cylinders 35 are used for the preliminary forming of the flange shell bolt hole. The center cylinder 34 and the movable mold 2 cooperatively form the tubular structure of the flange shell. The fixed mold 31 and the movable mold 2 form the flange plate of the flange shell. The cross hole 36 with the edge having the slope can obtain the oblique pressure when the air is filled, so that the air can better enter the surrounding of the cross hole 36, and a larger range of stripping effect is obtained, so as to realize a better demolding effect.

[0044] Embodiment 2, please refer to Figures 1-8 The demolding mechanism 4 comprises a shell 41, the shell 41 is fixedly connected with the side, close to the bottom plate 1, of the fixed mold 31, and the shell 41 is fixedly connected on the top of the bottom plate 1. The top of the bottom plate 1 is further fixedly connected with an opening and closing assembly 42, the opening and closing assembly 42 is arranged on the outer side of the shell 41, and the side, away from the bottom plate 1, of the opening and closing assembly 42 is fixedly connected with the side, away from the fixed mold 31, of the movable mold 2. The inner side of the shell 41 is fixedly connected with a pneumatic ejection assembly 43. The opening and closing assembly 42 is used for driving the movable mold 2 to rise and fall, so as to realize the opening and closing of the mold. The pneumatic ejection assembly 43 is used for filling the air into the center cylinder 34 and the edge cylinder 35, so as to realize the demolding.

[0045] The opening and closing assembly 42 comprises a support 421 fixedly connected to the side of the movable die 2 away from the base plate 1, an end of the support 421 away from the movable die 2 is fixedly connected with a connecting sleeve 423, the connecting sleeve 423 is uniformly distributed with three along the circumference of the movable die 2, and the inner side of each of the three connecting sleeves 423 is fixedly connected with an extension rod 422, the output end of the extension rod 422 is fixedly connected with the connecting sleeve 423, and the side of the extension rod 422 away from the connecting sleeve 423 is fixedly connected with the top of the base plate 1; starting the extension rod 422 drives the output end of the extension rod 422 to lift the connecting sleeve 423, and drives the support 421 to lift, thereby driving the movable die 2 to lift, and achieving the opening and closing of the movable die 2 and the fixed die 31.

[0046] The pneumatic ejection assembly 43 comprises a center pipe 431, the outer side of the center pipe 431 is rotationally connected with the inner side of the center cylinder 34, the inner side of each of the plurality of side cylinders 35 is rotationally connected with a side pipe 432, the inner side of the center pipe 431 and the side pipe 432 is fixedly connected with a cross-shaped baffle 433, an end of the center pipe 431 away from the fixed die 31 is provided with a driving assembly 434, the output end of the driving assembly 434 is fixedly connected with the side of the center pipe 431 and the side pipe 432 away from the fixed die 31, the side of the driving assembly 434 away from the fixed die 31 is provided with a partition plate 435, the side of the partition plate 435 away from the driving assembly 434 is provided with a jetting assembly 436, the side of the jetting assembly 436 away from the partition plate 435 is fixedly connected with the inner side bottom of the shell 41, and the output end of the jetting assembly 436 is communicated with the center pipe 431 and the side pipe 432; during demolding, starting the jetting assembly 436, the jetting assembly 436 fills air into the center pipe 431 and the side pipe 432, the cross-shaped baffle 433 blocks the cross-shaped hole 36, the pressure between the center pipe 431 and the side pipe 432 rises, and then starting the driving assembly 434 drives the center pipe 431 and the side pipe 432 to rotate, the cross-shaped baffle 433 intermittently blocks the cross-shaped hole 36, and the center cylinder 34 and the side cylinder 35 intermittently eject gas, which peels off the movable die 2 and the flange shell; the intermittent jetting can gradually expand the peeling position, and can avoid that the tearing force is too large to cause damage to the flange shell.

[0047] The driving assembly 434 comprises a center tooth 4341, the inner side of the center tooth 4341 is fixedly connected with the outer side of the center pipe 431, the outer side of the side pipe 432 is fixedly connected with a side tooth 4342, and the center tooth 4341 is meshingly connected with the side tooth 4342; driving the center tooth 4341 to rotate drives the side tooth 4342 meshingly connected therewith to rotate, and the side tooth 4342 drives the side pipe 432 to rotate, which cooperates with the cross-shaped baffle 433 to block the cross-shaped hole 36, and achieves intermittent jetting.

[0048] The center tooth 4341 is provided with a driven tooth 4343 close to one side of the fixed mold 31, the inner side surface of the driven tooth 4343 is fixedly connected with the outer side surface of the center pipe 431, the side surface of the driven tooth 4343 is engagedly connected with a driving tooth 4344, the driving tooth 4344 is fixedly connected with an electric rotary rod 4345 close to one side of the fixed mold 31, one end of the electric rotary rod 4345 away from the driving tooth 4344 is fixedly connected with the side of the fixed mold 31 close to the center tooth 4341, and the output end of the electric rotary rod 4345 is fixedly connected with the center of the driving tooth 4344. Starting the electric rotary rod 4345, the output end of the electric rotary rod 4345 drives the driving tooth 4344 to rotate, the driving tooth 4344 drives the driven tooth 4343 to rotate, drives the center pipe 431 to rotate, drives the center tooth 4341 to rotate, and drives the edge tooth 4342 to rotate.

[0049] The jet assembly 436 includes a center air pipe 4361, the outer side surface of the center air pipe 4361 is limitingly rotatably connected with the inner side surface of the center pipe 431, one end of the center air pipe 4361 away from the center pipe 431 penetrates the partition plate 435, and the outer side surface of the center air pipe 4361 is fixedly connected with the inner side surface of the partition plate 435. The side surface of the center air pipe 4361 away from the partition plate 435 is provided with a hole, the inner side surface of the edge pipe 432 is limitingly rotatably connected with an edge air pipe 4362, one end of the edge air pipe 4362 away from the center pipe 431 penetrates the partition plate 435, and the outer side surface of the edge air pipe 4362 is fixedly connected with the inner side surface of the partition plate 435. The side surface of the edge air pipe 4362 away from the partition plate 435 is provided with a hole, gas enters from the side surface of the center air pipe 4361 and the edge air pipe 4362, and finally the gas enters the center pipe 431 and the edge pipe 432 to realize inflation.

[0050] The partition plate 435 is provided with a limiting plate 4363 away from one side of the center pipe 431, the connecting column 4364 is arranged at the interval between the limiting plate 4363 and the partition plate 435, the two ends of the connecting column 4364 are fixedly connected with the sides of the limiting plate 4363 and the partition plate 435 close to each other, and the inner side surface of the limiting plate 4363 is fixedly connected with the outer side surfaces of the center air pipe 4361 and the edge air pipe 4362. The limiting plate 4363 cooperates with the partition plate 435 to limit the two ends of the center air pipe 4361 and the edge air pipe 4362, avoid shaking of the two during inflation, avoid causing the center pipe 431 and the edge pipe 432 to shake, thereby avoiding abrasion between the center tooth 4341 and the edge tooth 4342, and prolonging the service life.

[0051] A gas bag 4365 is arranged directly below the limiting plate 4363, the side away from the limiting plate 4363 of the gas bag 4365 is fixedly connected with a pad 4366, and the pad 4366 is symmetrically arranged on the side away from the limiting plate 4363 of the gas bag 4365, the pad 4366 is fixedly connected with the inner side bottom of the shell 41, the side close to the pad 4366 of the gas bag 4365 is fixedly connected with an elbow pipe 4367, one end away from the gas bag 4365 of the elbow pipe 4367 is fixedly connected with a pump body 4368, the outer side of the pump body 4368 is fixedly connected with the side of the two pads 4366 close to each other, one end of the pump body 4368 away from the elbow pipe 4367 is fixedly connected with an air inlet pipe 4369, one end of the air inlet pipe 4369 away from the pump body 4368 penetrates through the side of the shell 41, and the outer side of the air inlet pipe 4369 is fixedly connected with the inner side of the shell 41, 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 pipe 4367 in turn, and finally enters the gas bag 4365, the gas bag 4365 is inflated, air at the bottom of the shell 41 is extruded into the central air pipe 4361 and the side air pipe 4362, the air is pushed into the central air pipe 4361 and the side air pipe 4362 in the mode of increasing the air pressure at the bottom of the shell 41 by inflating the gas bag 4365, the outside air can be avoided from directly entering the central air pipe 4361 and the side air pipe 4362, the impurities in the external environment can be avoided from contacting the flange shell, the impurities can be avoided from adhering, the forming quality is ensured, and compared with the traditional pneumatic ejection, the air filtering process is reduced.

[0052] In use, the telescopic rod 422 is started, the output end of the telescopic rod 422 drives the connecting sleeve 423 to descend, drives the support 421 to descend, thereby drives the movable die 2 to descend, realizes the clamping of the movable die 2 and the fixed die 31, when the fixed die 31 and the movable die 2 are clamped, the top of the center cylinder 34 and the edge cylinder 35 contacts with the bottom of the movable die 2, the cross hole 36 is closed, when feeding, the fixed die 31 and the movable die 2 are clamped, the feeding pipe 32 is connected with the raw material, the raw material passes through the feeding pipe 32, the air is discharged from the discharging pipe 33, when the discharging pipe 33 discharges continuous raw material, the feeding is stopped, when the raw material solidifies, the several edge cylinders 35 are used for the preliminary forming of the bolt holes of the flange shell, the center cylinder 34 cooperates with the movable die 2 to form the tubular structure of the flange shell, the fixed die 31 and the movable die 2 form the flange plate of the flange shell, then demolding is carried out, 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 pipe 4367 in turn, and finally enters the air bag 4365, the air bag 4365 expands, the air at the bottom of the shell 41 is extruded into the center air pipe 4361 and the edge air pipe 4362, the center pipe 431 and the edge pipe 432 are filled with air, the cross baffle 433 blocks the cross hole 36, the pressure between the center pipe 431 and the edge pipe 432 rises, the electric rotary rod 4345 is started, the output end of the electric rotary rod 4345 drives the driving gear 4344 to rotate, the driving gear 4344 drives the driven gear 4343 to rotate, drives the center pipe 431 to rotate, drives the center gear 4341 to rotate, drives the edge gear 4342 to rotate, the center pipe 431 and the edge pipe 432 rotate, the cross baffle 433 intermittently blocks the cross hole 36, the center cylinder 34 and the edge cylinder 35 intermittently spray gas, the movable die 2 and the flange shell are peeled off, the telescopic rod 422 is started, the output end of the telescopic rod 422 drives the connecting sleeve 423 to ascend, drives the support 421 to ascend, thereby drives the movable die 2 to ascend, realizes the opening of the movable die 2 and the fixed die 31, after opening, the formed shell and the fixed die 31 are peeled off, the demolding of the pressure sensor plastic flange shell is completed.

[0053] Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art and related fields without creative labor should belong to the protection scope of the present application. The structures, devices and operation methods not specifically described and explained in the present application, if not specially described and limited, are implemented according to the conventional means in the art.

Claims

1. A mold for processing a pressure sensor, characterized in that: include: A base plate (1), a movable mold (2) is provided on the top of the base plate (1), a molding mechanism (3) is provided on a side of the movable mold (2) close to the base plate (1), and an inner side surface of the molding mechanism (3) is slidably connected to the 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), wherein the feeding pipe (32) is arranged on the 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 the 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 diameter of the end of the discharge pipe (33) away from the feeding pipe (32) is smaller; 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), the top of the bottom plate (1) being further fixedly connected to an opening and closing assembly (42), the opening and closing assembly (42) being arranged on the outside of the shell (41), and the side of the opening and closing assembly (42) away from the bottom plate (1) being 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) being fixedly connected to a pneumatic ejection assembly (43); 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 a plurality of the 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 a cross baffle (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 tubes (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), and the side of the partition (435) away from the driving assembly (434) is provided with an air injection assembly (436); A limiting plate (4363) is provided on a side of the partition (435) away from the central tube (431), and a connecting column (4364) is provided at a distance between the limiting plate (4363) and the partition (435); 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 provided 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 the end of the pump body (4368) away from the curved pipe (4367) is fixedly connected to the air intake pipe (4369).

2. A mold for processing a pressure sensor according to claim 1, characterized in that: 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), and a slope is provided at the edge of the cross hole (36) away from the fixed mold (31).

3. A mold for processing a pressure sensor according to claim 2, 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 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).

4. A mold for processing a pressure sensor according to claim 3, characterized in that: The side of the jet assembly (436) away from the partition (435) is fixedly connected to the bottom of the inner side of the shell (41), and the output end of the jet assembly (436) is connected to the central tube (431) and the side tube (432).

5. The mold for processing a pressure sensor according to claim 4, characterized in that: 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 meshed with the side tooth (4342).

6. The mold for processing a pressure sensor according to claim 5, 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 meshedly connected to a driving tooth (4344); the side of the driving tooth (4344) close to the fixed mold (31) is fixedly connected to an electric rotating rod (4345); 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 the output end of the electric rotating rod (4345) is fixedly connected to the center of the driving tooth (4344).

7. A mold for processing a pressure sensor according to claim 6, characterized in that: 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), and the side of the central air pipe (4361) away from the partition (435) is provided with a hole, 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 the side of the side air pipe (4362) away from the partition (435) is provided with a hole.

8. The mold for processing a pressure sensor according to claim 7, characterized in that: The two ends of the connecting column (4364) are respectively fixedly connected to the side of the limiting plate (4363) and 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).

9. The mold for processing a pressure sensor according to claim 8, characterized in that: One end of the air inlet 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 inlet pipe (4369) is fixedly connected to the inner side surface of the shell (41).

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