Glue injection device for manufacturing differential pressure sensor

Abstract

The invention belongs to the technical field of differential pressure transducer glue injection, and relates to a glue injection device for differential pressure transducer manufacturing, which is characterized in that the lower end of a blocking rod is a blocking end, the blocking end of the blocking rod is slidably blocked between a glue cylinder and an injection nozzle, and a spring I is connected between the blocking end of the blocking rod and a guide frame; the upper end of the blocking rod is a bent shifting end; the supporting frame is fixed to the electric transverse moving unit, and a wedge-shaped plate suitable for extruding the shifting end is connected to the supporting frame; the wedge-shaped plate is provided with a concave inclined groove, and the wedge-shaped plate is located in the inclined groove. An electric transverse moving unit is controlled to drive a glue barrel to drive an injection nozzle to move left and right, so that glue is uniformly spread, and stacking caused by the fact that the glue is only concentrated at one position in the differential pressure sensor is avoided; and through extrusion of the shifting end and the wedge-shaped plate, when glue injection is needed, the injection nozzle is automatically and synchronously loosened to discharge the glue, when glue injection is not needed, the injection nozzle is automatically and synchronously blocked to stop discharging the glue, and the automation degree is high.

Description

Technical Field

[0001] The invention belongs to the technical field of glue injection for differential pressure sensors, and in particular relates to a glue injection device for manufacturing differential pressure sensors. Background Art

[0002] A differential pressure sensor is a device used to measure the pressure difference between two points in a gas or liquid. It is widely used in the fields of automobiles, aerospace, medical equipment, and industrial automation. During the manufacturing process, in order to ensure its sealing and reliability, it is usually necessary to use a glue injection process to fill the gap inside the sensor or encapsulate it.

[0003] At present, most of the glue injection devices in the prior art, when injecting glue into the differential pressure sensor, mostly move the injection nozzle down to be close to the inside of the differential pressure sensor or actively move the differential pressure sensor to the bottom of the injection nozzle, and then open the control valve to allow the glue to be discharged from the injection nozzle to the inside of the differential pressure sensor and self-level. This glue injection method easily causes glue to accumulate in one place, and it is impossible to actively and evenly inject glue. In addition, for the mobile glue injection operation, the control valve has a certain delay, and it is difficult to achieve an instant response of automatically injecting glue when moving to the work station and automatically stopping when moving out of the work station. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and to provide a glue injection device for manufacturing a differential pressure sensor which is suitable for mobile glue injection to ensure uniform injection of glue and automatically and synchronously controls glue discharge based on mobile glue injection.

[0005] In order to solve the above technical problems, the present invention provides a glue injection device for manufacturing a differential pressure sensor, comprising: an electric lateral movement unit with a slide, the slide of the electric lateral movement unit is suitable for left and right movement; a glue cylinder with a built-in constant temperature heater, the glue cylinder is vertically arranged on the slide of the electric lateral movement unit; a nozzle connected to the bottom of the glue cylinder; the shape of the nozzle is a cone that is wide at the top and narrow at the bottom; a guide frame connected to the inside of the glue cylinder, a blocking rod for controlling the discharge of glue inside the glue cylinder sliding on the guide frame, the blocking rod sliding in the up and down direction; the lower end of the blocking rod is The blocking end of the blocking rod has a diameter larger than that of the blocking rod, and the blocking end of the blocking rod is slidably blocked between the rubber cylinder and the nozzle. A spring 1 surrounding the blocking rod is connected between the blocking end of the blocking rod and the guide frame, and the spring 1 is used for resetting the upwardly moved blocking rod. The upper end of the blocking rod is a toggle end bent backward by ninety degrees. A support frame is fixed on the electric transverse movement unit, and a wedge-shaped plate suitable for squeezing the toggle end on the blocking rod is connected to the upper side of the support frame. The upper part of the wedge plate has three downwardly recessed inclined grooves, and the toggle end is located in the middle inclined groove accommodated in the three places.

[0006] Preferably, the glue cylinder comprises: a glue mixing section and a glue storage section located above the glue mixing section, both of which are hollow structures, the glue storage section is larger than the glue mixing section, and the injection nozzle is connected to the bottom of the glue mixing section; an isolation section, the isolation section is connected to the interior of the glue storage section, the isolation section divides the interior of the glue storage section into a plurality of glue storage spaces, there are two glue storage spaces in total, and glues of different properties are stored in the two glue storage spaces for separate or mixed use, and the plurality of glue storage spaces in the glue storage section are all connected with a rubber hose for injecting glue; a plurality of connecting pipes with built-in control valve groups, which are connected one-to-one between the plurality of glue storage spaces in the glue storage section and the glue mixing section, the rubber hose injects external glue into the glue storage space of the glue storage section, and the connecting pipe discharges the glue in the glue storage space of the glue storage section into the glue mixing section.

[0007] Preferably, it also includes: a rack connected to the support frame along a wedge plate; a stirring rod rotatably disposed on the rubber cylinder, the lower end of the stirring rod extending to the inner bottom of the rubber cylinder; a plurality of stirring blades, all connected to the lower end of the stirring rod; a stirring gear connected to the upper end of the stirring rod, the stirring gear meshing with the rack.

[0008] Preferably, it also includes: an electric lifting unit with a slide, the electric lifting unit is perpendicular to the electric lateral movement unit, and the electric lateral movement unit is installed on the slide of the electric lifting unit; the electric lifting unit is controlled to drive the electric lateral movement unit to drive the nozzle to move up and down through the rubber cylinder.

[0009] Preferably, it also includes: a scraper for scraping the glue, the scraper is arranged on the nozzle, and the lower side of the scraper is flush with the lower side of the nozzle; the lower side of the scraper is flush with the upper side of the differential pressure sensor, and when the nozzle moves to perform glue injection operation, the nozzle will also drive the scraper to move to scrape the glue injected into the differential pressure sensor.

[0010] Preferably, it also includes: a support plate, which is arranged on the nozzle, and a slider connected to the scraper is slidably disposed on the support plate, and the scraper is slid along the nozzle by the slider, and the slider moves upward to change the height of the scraper; a second spring is connected between the slider and the support plate, and the second spring is located in the support plate, and the second spring is used to reset the upwardly moved slider.

[0011] Preferably, it also includes: a driven gear, which is rotatably arranged on the upper part of the nozzle, and the support plate is connected to the eccentric side of the driven gear, and the driven gear enables the support plate to drive the scraper to rotate around the nozzle, so that the scraper can scrape the glue at different positions; a rotating shaft, which is rotatably arranged on the slide of the electric transverse movement unit; a transmission gear 1 meshing with the driven gear, and the transmission gear 1 is connected to the lower end of the rotating shaft, and the rotation of the rotating shaft will drive the driven gear to rotate through the transmission gear 1; a transmission gear 2 meshing with the rack, and the transmission gear 2 is connected to the upper end of the rotating shaft. When the glue cylinder drives the nozzle to move left and right for glue injection, the meshing of the transmission gear 2 and the rack is used to make the rotating shaft drive the driven gear to rotate through the transmission gear 1, so that the driven gear drives the scraper to continuously rotate around the nozzle through the support plate.

[0012] Preferably, it also includes: a base, fixed at the lower part of the electric lifting unit; an electric longitudinal movement unit with a slide, the electric longitudinal movement unit is installed on the upper side of the base, the slide of the electric longitudinal movement unit is connected to a bottom plate located below the nozzle, and the electric longitudinal movement unit is controlled to drive the bottom plate to move forward and backward; a receiving frame with a built-in elastic clamp, the receiving frame is used to place a pressure differential sensor to be injected, the pressure differential sensor is clamped by the elastic clamp, and the stability during the injection operation is improved. A plurality of the receiving frames are connected to the bottom plate, and the forward and backward movement of the bottom plate will drive the receiving frame to move forward and backward.

[0013] The present invention overcomes the shortcomings of the prior art and can achieve the following beneficial effects: 1. The electric lateral movement unit is controlled to drive the glue cylinder to move the nozzle left and right, so as to evenly spread the glue and avoid the glue being concentrated in one position inside the differential pressure sensor and causing stacking; and through the extrusion of the toggle end and the wedge plate, when glue injection is required, the nozzle is automatically and synchronously released to discharge the glue, and when glue injection is not required, the nozzle is automatically and synchronously blocked to stop discharging glue, with a high degree of automation.

[0014] 2. As long as the toggle end is squeezed by the wedge plate, no matter where the nozzle is moved by the rubber barrel, the glue can still be discharged even if the nozzle is in a stationary state. The usage is diversified, so that the discharge of glue can be controlled by movement while retaining the fixed glue injection method.

[0015] 3. Use multiple glue storage spaces to store glues of different properties for separate or mixed use; when mobile glue injection, the mixing gear and the rack are engaged to drive the mixing blade to rotate through the mixing rod, thereby realizing automatic mixing operation on the basis of mobile glue injection, and the injection nozzle will be loosened to discharge the glue during mobile glue injection, and the rotation of the mixing blade will increase the activity of the glue to speed up the glue discharge. Each step is interrelated and coordinated with each other.

[0016] 4. The engagement between the transmission gear 2 and the rack is used to make the rotating shaft drive the driven gear to rotate through the transmission gear 1, so that the driven gear drives the scraper to continuously rotate around the injection nozzle through the support plate, so as to automatically scrape the glue around the injection nozzle, and the scraping is performed as the injection nozzle moves, thereby improving the injection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an assembly schematic diagram of the present invention.

[0018] Figure 2 It is a schematic diagram of the electric traverse unit, the rubber cylinder and the nozzle of the present invention.

[0019] Figure 3 It is a partial cross-sectional view of the rubber cartridge of the present invention.

[0020] Figure 4 It is a top view of the electric lateral movement unit, rubber cylinder and support frame of the present invention.

[0021] Figure 5 It is a schematic diagram of the internal structure of the rubber cartridge of the present invention.

[0022] Figure 6 It is a cross-sectional view of the isolation part and the stirring rod of the present invention.

[0023] Figure 7 It is a top view of the stirring rod, stirring gear and rack of the present invention.

[0024] Figure 8 For the present invention Figure 2 Enlarged view of point A.

[0025] Fig. 9 It is a top view of the rack, driven gear and transmission gear 1 of the present invention.

[0026] Fig.10 It is a front view of the base, the electric longitudinal movement unit and the bottom plate of the present invention.

[0027] The marks in the accompanying drawings provided by the present invention are: 1-Electric traverse unit; 2-rubber cylinder, 21-rubber mixing unit, 22-rubber storage unit, 23-isolation unit, 24-connecting pipe; 3- Nozzle; 41-guide frame, 42-blocking rod, 43-spring 1, 44-sliding end; 51-support frame, 52-wedge plate; 61-stirring rod, 62-stirring blade, 63-stirring gear, 64-rack; 71-scraper, 72-support plate, 73-sliding block, 74-spring 2, 75-driven gear, 76-rotating shaft, 77-transmission gear 1, 78-transmission gear 2; 11-electric lifting unit, 12-base, 13-electric longitudinal movement unit, 14-bottom plate, 15-accommodating frame, 16-elastic clamp. DETAILED DESCRIPTION

[0028] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0029] In addition, the terms "first", "second" and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. It should be noted that the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0030] Embodiment 1: A glue injection device for manufacturing a differential pressure sensor, suitable for mobile glue injection to ensure uniform injection of glue, avoid glue accumulation at one position of the differential pressure sensor, and automatically and synchronously control glue discharge based on mobile glue injection, such as Figure 1-Figure 4As shown, it includes: an electric lateral movement unit 1 with a slide, the slide of the electric lateral movement unit 1 is suitable for left and right movement; a glue cylinder 2 with a built-in constant temperature heater, the glue cylinder 2 is vertically arranged on the slide of the electric lateral movement unit 1; a nozzle 3, which is connected to the bottom of the glue cylinder 2, and the glue inside the glue cylinder 2 is injected into the inside of the differential pressure sensor by the nozzle 3. During the process of injecting glue, the electric lateral movement unit 1 is controlled to drive the glue cylinder 2 to drive the nozzle 3 to move left and right, so as to spread the glue, avoid the glue being concentrated in only one position inside the differential pressure sensor to cause stacking, and also improve the efficiency of glue injection, so that the glue is spread more quickly and evenly; the shape of the nozzle 3 is a cone that is wide at the top and narrow at the bottom, and the glue gradually becomes thinner when it flows out, It helps to control the flow rate of glue, thereby improving the accuracy of glue injection. In the present embodiment, the shape of the nozzle 3 can also be adaptively selected as other shapes, which are not specifically limited; the guide frame 41 is connected to the inside of the glue barrel 2, and a blocking rod 42 for controlling the discharge of glue inside the glue barrel 2 slides on the guide frame 41, and the blocking rod 42 slides in the up and down direction; the lower end of the blocking rod 42 is a blocking end with a diameter larger than the rod body of the blocking rod 42, and the blocking end of the blocking rod 42 slides and blocks between the glue barrel 2 and the nozzle 3. When the blocking rod 42 moves up, it no longer blocks the nozzle 3, so that the glue inside the glue barrel 2 can be discharged from the nozzle 3 normally, and when the blocking rod 42 moves down, it will block the nozzle 3 again, and the blocking rod 42 A spring 43 surrounding the blocking rod 42 is connected between the end and the guide frame 41, and the spring 43 is used to reset the upwardly moved blocking rod 42; the upper end of the blocking rod 42 is a toggle end 44 bent backward by 90 degrees, and the blocking rod 42 is driven to move upward by moving the toggle end 44 of the blocking rod 42 upward, and the toggle end 44 is released to make the blocking rod 42 move downward and reset under the action of the spring 43; a support frame 51 is fixed to the electric transverse movement unit 1, and a wedge-shaped plate 52 suitable for squeezing the toggle end 44 on the blocking rod 42 is connected to the upper side of the support frame 51; the upper part of the wedge plate 52 has three downwardly concave inclined grooves, and the toggle end 44 is located in the middle inclined grooves accommodated in the three places. Initially, the blocking rod 42 blocks the injection When the rubber cylinder 2 drives the injection nozzle 3 to move left or right for injection, the toggle end 44 will move accordingly and be squeezed by the wedge plate 52 to move upward and out of the inclined groove. When the rubber cylinder 2 is reset, the toggle end 44 will move into the inclined groove again, and the blocking rod 42 can be reset under the action of the spring 1 43. In this way, on the basis of lateral injection, when injection is required, the injection nozzle 3 is automatically and synchronously released to discharge the glue. When injection is not required, the rubber cylinder 2 is reset to block the blocking rod 42 to stop the injection nozzle 3 from discharging the glue. The degree of automation is high. As long as the toggle end 44 is squeezed by the wedge plate 52, no matter where the rubber cylinder 2 drives the injection nozzle 3 to move, even if the injection nozzle 3 is in a stationary state, the glue can still be discharged. The usage is diversified.It should be explained that the three inclined grooves on the wedge plate 52 are used for the toggle end 44 to stay. When the rubber cylinder 2 drives the injection nozzle 3 to move left to complete the injection operation of the differential pressure sensor, the toggle end 44 does not need to be reset to the middle inclined groove. The toggle end 44 can be moved left to the leftmost inclined groove. Then, the toggle end 44 is moved right to inject glue during the next injection. The rightmost inclined groove is used in the same way, thereby reducing the distance of invalid movement and improving work efficiency. In addition, in actual use, the conveyor belt that transports from front to back can pass under the injection nozzle 3, and the conveyor belt continuously transports the differential pressure sensor from front to back, and then the injection nozzle 3 moves left and right to inject glue, so as to cooperate with the assembly line injection operation. ;

[0031] like Figure 5 As shown, the glue cylinder 2 includes: a glue mixing part 21 and a glue storage part 22 located above the glue mixing part 21, the glue mixing part 21 and the glue storage part 22 are both hollow structures, the glue storage part 22 is larger than the glue mixing part 21, and the injection nozzle 3 is connected to the bottom of the glue mixing part 21; an isolation part 23, the isolation part 23 is connected to the inside of the glue storage part 22, and the isolation part 23 divides the inside of the glue storage part 22 into a plurality of glue storage spaces. In this embodiment, there are two glue storage spaces, and glues of different properties are stored in the two glue storage spaces for separate or mixed use. The multiple glue storage spaces of the glue storage section 22 are all connected with a rubber hose for injecting glue; multiple connecting pipes 24 with built-in control valve groups are connected one by one between the multiple glue storage spaces of the glue storage section 22 and the glue mixing section 21, the rubber hose injects external glue into the glue storage space of the glue storage section 22, and the connecting pipe 24 discharges the glue in the glue storage space of the glue storage section 22 into the glue mixing section 21. When the discharged glue is multiple types of glue, they can be mixed and used, and when it is a single type of glue, it can be used separately, and the various glue storage spaces do not interfere with each other.

[0032] like Figure 2 , Figure 5 , Figure 6 and Figure 7As shown, it also includes: a rack 64 connected to the support frame 51 along the wedge plate 52; a stirring rod 61, rotatably arranged on the rubber cylinder 2, and the lower end of the stirring rod 61 extends to the inner bottom of the rubber cylinder 2; a plurality of stirring blades 62, all connected to the lower end of the stirring rod 61, the rotation of the stirring rod 61 will drive the stirring blades 62 to rotate to stir the glue at the bottom of the rubber cylinder 2 to improve the activity of the glue, and at the same time, it can make the injected multiple glues more fully mixed together; a stirring gear 63, connected to the At the upper end of the stirring rod 61, the stirring gear 63 is meshed with the rack 64, so that when the glue barrel 2 drives the nozzle 3 to move left and right for glue injection, the stirring gear 63 is engaged with the rack 64 to drive the stirring blade 62 to rotate through the stirring rod 61, thereby realizing automatic stirring operation on the basis of mobile glue injection, and when moving glue injection, the nozzle 3 will be loosened to discharge the glue, and the rotation of the stirring blade 62 will increase the activity of the glue to speed up the glue discharge, and each step is interrelated and coordinated with each other.

[0033] like Figure 1 As shown, it also includes: an electric lifting unit 11 with a slide, the electric lifting unit 11 is perpendicular to the electric lateral movement unit 1, and the electric lateral movement unit 1 is installed on the slide of the electric lifting unit 11; the electric lifting unit 11 is controlled to drive the electric lateral movement unit 1 to drive the injection nozzle 3 to move up and down through the glue cylinder 2, so as to change the glue injection height, thereby adapting to different glue injection operations, and has strong adaptability.

[0034] like Figure 2 and Figure 8 As shown, it also includes: a scraper 71 for scraping glue flat, the scraper 71 is arranged on the nozzle 3, and the lower side of the scraper 71 is flush with the lower side of the nozzle 3; the lower side of the scraper 71 is flush with the upper side of the differential pressure sensor, when the nozzle 3 moves to perform the glue injection operation, the nozzle 3 will also drive the scraper 71 to move to scrape the glue injected into the differential pressure sensor.

[0035] like Figure 2 and Figure 8 As shown, it also includes: a support plate 72, which is arranged on the nozzle 3, and a slider 73 connected to the scraper 71 slides on the support plate 72, and the slider 73 makes the scraper 71 slide along the nozzle 3, and the slider 73 moves up to change the height of the scraper 71, so as to adapt to different injection conditions, and ensure that the scraper 71 can be flush with the upper side of the differential pressure sensor, and the nozzle 3 can move down to penetrate into the differential pressure sensor to perform injection operations; a spring 74, which is connected between the slider 73 and the support plate 72, and the spring 74 is located in the support plate 72, and the spring 74 is used to reset the upward slider 73.

[0036] like Figure 2 , Figure 8and Fig. 9 As shown, it also includes: a driven gear 75, which is rotatably arranged on the upper part of the nozzle 3, and the support plate 72 is connected to the eccentric side of the driven gear 75, and the driven gear 75 causes the support plate 72 to drive the scraper 71 to rotate around the nozzle 3, so that the scraper 71 can scrape the glue at different positions; a rotating shaft 76, which is rotatably arranged on the slide of the electric lateral movement unit 1; a transmission gear 77 meshing with the driven gear 75, and the transmission gear 77 is connected to the lower end of the rotating shaft 76, and the rotation of the rotating shaft 76 will pass through the transmission gear One 77 drives the driven gear 75 to rotate; a transmission gear 2 78 meshing with the rack 64, and the transmission gear 2 78 is connected to the upper end of the rotating shaft 76. When the rubber cylinder 2 drives the nozzle 3 to move left and right for injection operation, the meshing of the transmission gear 2 78 and the rack 64 is utilized to make the rotating shaft 76 drive the driven gear 75 to rotate through the transmission gear one 77, so that the driven gear 75 drives the scraper 71 to continuously rotate around the nozzle 3 through the support plate 72, so as to automatically scrape the glue around the nozzle 3, and this is done as the nozzle 3 moves.

[0037] Implementation method 2, based on implementation method 1, Figure 1 and Fig.10 As shown, it also includes a base 12, which is fixed at the lower part of the electric lifting unit 11; an electric longitudinal movement unit 13 with a slide, the electric longitudinal movement unit 13 is installed on the upper side of the base 12, and the slide of the electric longitudinal movement unit 13 is connected to a bottom plate 14 located below the nozzle 3, and the electric longitudinal movement unit 13 is controlled to drive the bottom plate 14 to move forward and backward, so as to compensate for the front-to-back position adjustment on the basis that the electric lateral movement unit 1 drives the glue cylinder 2 to drive the nozzle 3 to move left and right, and the electric lifting unit 11 drives the electric lateral movement unit 1 to move up and down; a containing frame 15 with a built-in elastic clamp 16, the containing frame 15 is used to place the pressure difference sensor to be injected, and the pressure difference sensor is clamped by the elastic clamp 16 to improve the stability during the injection operation, and a plurality of the containing frames 15 are connected to the bottom plate 14, and the front-to-back movement of the bottom plate 14 will drive the containing frame 15 to move forward and backward, so that not only the left-right direction but also the front-to-back direction of the pressure difference sensor can be injected, even if the pressure difference sensor is long, the glue can be evenly arranged inside the pressure difference sensor.

[0038] In this embodiment, the elastic clamp 16 includes four clamping frames slidably arranged on the containing frame 15 and connecting springs connected between the clamping frames and the containing frame; the four clamping frames on the containing frame 15 are respectively located at the front, rear, left and right sides of the containing frame 15, and the four clamping frames are used to clamp the differential pressure sensor together.

[0039] Obviously, the embodiments described above are only part of the embodiments of the present invention, rather than all of the embodiments. They only express the preferred embodiments of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the patent scope of the present invention.

[0040] It should be pointed out that, for ordinary technicians in this field, several modifications, increases and decreases in quantity, improvements and substitutions can be made without departing from the concept of the present invention. Therefore, based on the implementation methods in the present invention, all other implementation methods obtained by ordinary technicians in this field without making any creative work are within the scope of protection of the present invention.

Claims

1. A glue injection device for manufacturing a differential pressure sensor, It is characterized in that include: An electric lateral movement unit (1) having a slide; a rubber cylinder (2) with a built-in heater, the rubber cylinder (2) being vertically arranged on the slide of the electric lateral movement unit (1); a nozzle (3) connected to the bottom of the rubber cylinder (2); a guide frame (41) connected to the inside of the rubber cylinder (2), a blocking rod (42) sliding on the guide frame (41) for controlling the discharge of glue inside the rubber cylinder (2); the lower end of the blocking rod (42) being a blocking end, the blocking end of the blocking rod (42) slidingly blocking the inside of the rubber cylinder (2) A spring (43) is connected between the rubber cylinder (2) and the nozzle (3), and between the blocking end of the blocking rod (42) and the guide frame (41); the upper end of the blocking rod (42) is a bent toggle end (44); a support frame (51) is fixed to the electric lateral movement unit (1), and a wedge plate (52) suitable for squeezing the toggle end (44) is connected to the support frame (51); the wedge plate (52) has a recessed oblique groove, and the toggle end (44) is located in the oblique groove.

2. A glue injection device for manufacturing a differential pressure sensor according to claim 1, It is characterized in that The rubber cylinder (2) comprises: a rubber mixing section (21) and a rubber storage section (22) located above the rubber mixing section (21), the injection nozzle (3) being connected to the rubber mixing section (21); an isolation section (23) dividing the interior of the rubber storage section (22) into a plurality of rubber storage spaces, the plurality of rubber storage spaces of the rubber storage section (22) being connected to a rubber hose; and a plurality of connecting pipes (24) with built-in control valve groups, which are connected one by one between the plurality of rubber storage spaces of the rubber storage section (22) and the rubber mixing section (21).

3. A glue injection device for manufacturing a differential pressure sensor according to claim 1, It is characterized in that Also includes: A rack (64) connected to the support frame (51); A stirring rod (61) is rotatably mounted on the rubber cylinder (2), the lower end of the stirring rod (61) extending to the inner bottom of the rubber cylinder (2); a stirring blade (62) is connected to the lower end of the stirring rod (61); and a stirring gear (63) is connected to the upper end of the stirring rod (61), the stirring gear (63) meshing with the rack (64).

4. A glue injection device for manufacturing a differential pressure sensor according to claim 3, It is characterized in that Also includes: An electric lifting unit (11) having a slide, wherein the electric lifting unit (11) is perpendicular to the electric lateral movement unit (1), and the electric lateral movement unit (1) is mounted on the slide of the electric lifting unit (11).

5. A glue injection device for manufacturing a differential pressure sensor according to claim 3, It is characterized in that Also includes: A scraper (71) for scraping glue, the scraper (71) being arranged on the nozzle (3), and the lower side of the scraper (71) being flush with the lower side of the nozzle (3).

6. A glue injection device for manufacturing a differential pressure sensor according to claim 5, It is characterized in that Also includes: A support plate (72) is provided on the nozzle (3), and a slider (73) connected to the scraper (71) is slidably disposed on the support plate (72), and the slider (73) causes the scraper (71) to rise and fall and slide; a second spring (74) is connected between the slider (73) and the support plate (72).

7. A glue injection device for manufacturing a differential pressure sensor according to claim 6, It is characterized in that Also includes: A driven gear (75) is rotatably mounted on the nozzle (3), the support plate (72) is connected to the eccentric side of the driven gear (75), and the driven gear (75) causes the support plate (72) to rotate around the nozzle (3); a rotating shaft (76) is rotatably mounted on the slide of the electric lateral shift unit (1); a transmission gear 1 (77) meshing with the driven gear (75), the transmission gear 1 (77) being connected to the lower end of the rotating shaft (76); and a transmission gear 2 (78) meshing with the rack (64), the transmission gear 2 (78) being connected to the upper end of the rotating shaft (76).

8. A glue injection device for manufacturing a differential pressure sensor according to claim 1, It is characterized in that It also includes a base (12) fixed at the bottom of the electric lifting unit (11); an electric longitudinal movement unit (13) having a slide, the electric longitudinal movement unit (13) being installed on the upper side of the base (12), the slide of the electric longitudinal movement unit (13) being connected to a bottom plate (14) located below the injection nozzle (3); and a receiving frame (15) with a built-in elastic clamp (16), the receiving frame (15) being used to place a differential pressure sensor to be injected.

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