Damper production apparatus and process

Abstract

The application provides a damper production equipment and process, relates to damper production technical field, and includes a pressure disc pump and a point glue machine, the point glue machine injects damping grease into a rotating shaft installation slot in a damper base; the point glue machine includes a reference platform, a tool clamp and a glue injection assembly; the tool clamp is rotationally arranged on the reference platform; the glue injection assembly includes a central tube and a pneumatic tube; the central tube is used to guide damping grease into the damper base; the pneumatic tube is sleeved outside the central tube; the rotating shaft installation slot in the damper base is divided into a plurality of first areas and second areas which are alternately arranged, the tool clamp rotates at a first speed when glue injection in the first area, and the tool clamp rotates at a second speed when glue injection in the second area, so that the amount of damping grease injected in the first area is greater than that in the second area. By arranging the above components, the purpose of different glue injection amounts at different positions is effectively achieved, the function of blowing and cleaning the damping grease outlet position is increased, and the product qualification rate is improved.

Description

Technical Field

[0001] This invention relates to the field of damper manufacturing technology, and in particular to a damper manufacturing equipment and process. Background Technology

[0002] Dampers, as important shock absorption components, are widely used in various fields such as construction, automobiles, home appliances, and instrumentation. Their performance directly depends on the quality of the damping grease injection. Currently, in the damper production process, damping grease injection is mostly completed using a dispensing machine. The dispensing machine uses a needle to precisely deliver the damping grease into a preset cavity in the damper base, achieving quantitative injection of the damping grease. This method has become the mainstream injection method in the industry.

[0003] However, existing damping grease dispensing machines still have many technical defects in actual production applications, seriously affecting the production quality and efficiency of dampers. The most prominent problem is that after dispensing, due to the need to install the rotating shaft, some damping grease easily overflows through the shaft's edge, contaminating the edge of the damper base and affecting subsequent welding. Therefore, the injection volume needs to be dynamically adjusted during the dispensing process. Furthermore, there are issues with stringing and uneven dispensing during the process. Because damping grease itself has a certain viscosity, when the needle is removed after dispensing, the damping grease adhering to the needle's outer wall is stretched due to surface tension, forming strings. This leads to problems such as poor sealing and component jamming in subsequent assembly processes, thereby reducing the product qualification rate of the dampers and increasing production rework costs.

[0004] Therefore, there is a need for damper production equipment and process that can solve the above-mentioned defects. Summary of the Invention

[0005] The purpose of this invention is to provide a damper manufacturing equipment and process to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a damper production equipment, comprising a pressure plate pump and a dispensing machine, wherein the pressure plate pump delivers damping grease to the dispensing machine through a pipeline, and the dispensing machine injects the damping grease into the rotating shaft mounting groove in the damper base, characterized in that the dispensing machine includes a reference platform, which is in a horizontal state; The tooling fixture is rotatably mounted above the reference platform to fix the damper base. The bottom of the tooling fixture is connected to the motor output shaft, and the motor is fixedly connected to the reference platform. The lifting plane is positioned above the reference platform and can move up and down and slide horizontally relative to the tooling fixture. A gear pump, which is fixedly connected to the lifting plane and whose input end is connected to the pressure plate pump, is used to quantitatively deliver damping grease; The glue injection assembly is fixedly installed at the lower end of the gear pump and connected to the output end of the gear pump. The glue injection assembly is vertically aligned with the tooling fixture. The glue injection assembly includes a guide tube, which is detachably installed at the lower end of the gear pump and has an air inlet pipe connected to its side wall. The central tube, located inside the guide tube and connected to the gear pump, is used to guide the damping grease into the damper base. The pneumatic tube is movably fitted outside the central tube and has a gap between it and the central tube. The pneumatic tube is placed inside the guide tube. The shaft mounting groove inside the damper base is divided into multiple alternating first and second sections. When the first section is filled with adhesive, the motor drives the tooling fixture to rotate at a first speed. When the second section is filled with adhesive, the motor drives the tooling fixture to rotate at a second speed, so that the amount of damping grease injected in the first section is greater than that in the second section.

[0007] Preferably, the glue injection assembly further includes: a piston tube, which is sleeved on the outside of the pneumatic tube and positioned at one end of the pneumatic tube close to the gear pump; The lower end of the piston tube and the middle part of the pneumatic tube combine to form an inflation chamber. Gas in the intake tube can enter the space between the pneumatic tube and the central tube through the inflation chamber to clean the outer wall of the end of the central tube.

[0008] Preferably, the glue injection assembly further includes: a separator ring, which is fixedly connected to the outside of the pneumatic tube and slides and seals with the inner wall of the guide tube, and an elastic reset member is provided between the lower end of the separator ring and the guide tube; The retaining ring is fixedly connected to the inner side of the piston tube and slides and seals with the outer wall of the pneumatic tube. The inflation chamber is positioned between the partition ring and the fixing ring; The connecting hole is located in the middle of the pneumatic tube and is placed inside the inflation chamber; When the pressure inside the inflation chamber is the first pressure, gas enters the space between the pneumatic tube and the central tube through the connecting hole, and the volume of the inflation chamber is the first volume. When the pressure inside the inflation chamber is the second pressure, some gas enters between the pneumatic tube and the central tube through the connecting hole, and the volume of the inflation chamber is the second volume. The first pressure is less than the second pressure, and the first volume is less than the second volume.

[0009] Preferably, it also includes: a lifting assembly, which is vertically mounted on the top surface of the reference platform for adjusting the position of the lifting plane relative to the tooling fixture; The lifting assembly includes: a fixed suspension with an elongated hole at its bottom, which is mounted on the upper end of the reference platform by fasteners; The linear guide rail is vertically mounted on the side of the fixed suspension near the gear pump and is set perpendicular to the reference platform. A vertical slide table is slidably mounted on the outside of a linear guide rail. A trapezoidal groove is provided on the side of the vertical slide table near the lifting plane. The trapezoidal groove is set horizontally relative to the reference platform. The drive unit is fixedly installed at the bottom of the fixed suspension, and the output end is fixedly connected to the lifting screw. The vertical slide is threadedly engaged with the lifting screw.

[0010] Preferably, a horizontal slide is fixedly connected to the side of the lifting plane that is close to the vertical slide, and the horizontal slide can slide along the trapezoidal groove; A fixing component is fixedly installed in the middle of the horizontal slide to lock the relative position of the horizontal slide and the vertical slide.

[0011] Preferably, a sealing disc is fixedly installed on the top of the pneumatic tube.

[0012] Preferably, it also includes: a pressure regulating valve, which is fixedly installed in the middle of the air intake pipe and is used to control the pressure in the air intake chamber; A pressure-flattening hole is provided in the middle of the guide tube, and the pressure-flattening hole is located between the sealing plate and the fixing ring.

[0013] Preferably, it also includes a pressure reducing valve, which is located between the pressure plate pump and the dispensing machine, to reduce the pressure of the damping grease entering the gear pump.

[0014] This invention also provides a damper manufacturing process, applicable to the aforementioned damper manufacturing equipment, comprising the following steps: S1: Equipment settings, manually adjust the position of the lifting plane relative to the tooling fixture so that the glue injection assembly can correspond to the damper base; S2: Parameter settings, set the output of the gear pump per cycle according to production requirements, and set the rotation speed of the tooling fixture and the intake pressure in the intake pipe; S3: Fill with damping grease, lower the glue injection assembly, adjust the center tube to be placed inside the damper base, and then start the gear pump and motor to fill the damping grease into the damper base. S4: Disconnect glue. After filling, the glue injection component rises, the tooling fixture rotates to the preset angle, and the pressure in the inflation chamber increases. The pneumatic tube moves down and the lower end face passes over the lower end face of the central tube to clean the end of the central tube. S5: Cycle through the process. Manually remove the damper base after filling, rotate the fixture to the initial angle, place the new damper base, and repeat S3 and S4.

[0015] Preferably, S3 includes the following steps: S31: During the process of injecting glue into the convex dots and the lower end of the central tube corresponding to the first area, the motor drives the tooling fixture to rotate at a preset first speed and maintains the third pressure in the air chamber. S32: Smooth glue injection. During the process of the lower end of the central tube corresponding to the second zone, the motor drives the tooling fixture to rotate at a preset second speed and maintains the first pressure in the inflation chamber.

[0016] This invention provides a damper manufacturing equipment and process, which has at least the following beneficial effects: 1. This invention achieves the purpose of adjusting the amount of glue dispensed at different positions by setting up a glue dispensing component, a motor, and a tooling fixture. According to the installation position of the rotating shaft, the glue dispensing area inside the damper base is divided into multiple alternating first and second zones. During the glue dispensing process, when the glue dispensing component corresponds to the first zone, the motor drives the tooling fixture to rotate at a first speed; when it corresponds to the second zone, the motor drives the tooling fixture to rotate at a second speed. The first rotation speed is less than the second rotation speed. Therefore, under the same output flow rate of the glue dispensing component, the amount of glue dispensed at the position corresponding to the first zone is greater. Therefore, during installation, the position of the through hole of the rotating shaft corresponds to the position of the first zone, and the number of first zones is set according to the number of through holes in the middle of the rotating shaft.

[0017] 2. This invention uses a glue injection assembly consisting of a guide tube, a central tube, a pneumatic tube, and a piston tube. During the injection process, gas is continuously introduced into the inflation chamber through the air inlet tube. The gas enters the gap between the pneumatic tube and the central tube through the connecting hole, forming an air curtain on the outer wall of the end of the central tube. This avoids stringing during the glue injection process, which can cause contamination, affect subsequent processes, and reduce the yield rate.

[0018] 3. By setting up a motor and a pneumatic pressure control valve, this invention achieves the purpose of adjusting the air curtain intensity when dispensing glue at different locations. When dispensing glue to the first zone, since there is more damping grease in the first zone, in order to prevent the damping grease from being blown away, the airflow pressure between the pneumatic tube and the central tube is reduced, and the height of the glue dispensing assembly is appropriately adjusted upward, which effectively improves the cleanliness of production and the utilization rate of damping grease. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 This is a schematic diagram of the lifting component in this invention.

[0021] Figure 3 This is a schematic diagram showing the positions of the gear pump and the glue injection assembly in this invention.

[0022] Figure 4 This is a cross-sectional view of the dispensing assembly in this invention.

[0023] Figure 5 This is a schematic diagram of the internal structure of the glue injection assembly in this invention.

[0024] Figure 6 This is a disassembly diagram of the glue injection assembly in this invention.

[0025] Figure 7 This is a schematic diagram showing the state of the glue injection component during glue injection in this invention.

[0026] Figure 8 This is a schematic diagram showing the state of the glue injection component after glue injection is completed in this invention.

[0027] Figure 9 This is a schematic diagram of the piston tube structure in this invention.

[0028] Figure 10 This is a waveform diagram of the motor speed in this invention.

[0029] Figure 11 This is a schematic diagram of the dispensing process of the glue-dispensing component in this invention.

[0030] Figure 12 This is a distribution diagram of the first and second regions in this invention.

[0031] In the picture: 1. Pressure plate pump; 2. Dispensing machine; 3. Reference platform; 4. Tooling fixture; 5. Lifting plane; 51. Horizontal slide; 52. Fixture; 6. Gear pump; 7. Glue injection assembly; 71. Guide tube; 711. Flat pressure hole; 72. Air inlet pipe; 73. Central tube; 74. Pneumatic tube; 741. Separator ring; 742. Connecting hole; 743. Sealing plate; 75. Piston tube; 751. Fixing ring; 77. Inflation chamber; 78. Elastic reset component; 79. Air pressure regulating valve; 8. Lifting assembly; 81. Fixed suspension; 82. Oblong hole; 83. Linear guide rail; 84. Vertical slide; 85. Trapezoidal slide; 86. Drive component; 87. Lifting screw; 9. Motor; 10. Pressure reducing valve; 11. Damper base; 12. Rotating shaft. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Example 1 This invention provides, for example Figures 1 to 12The damper production equipment shown includes a pressure plate pump 1 and a dispensing machine 2. The pressure plate pump 1 delivers damping grease to the dispensing machine 2 through a pipeline. The dispensing machine 2 injects the damping grease into the mounting groove of the rotating shaft 12 in the damper base 11. The dispensing machine 2 includes a reference platform 3, which is horizontal; a tooling fixture 4, which is rotatably set above the reference platform 3 for fixing the damper base 11. The bottom of the tooling fixture 4 is connected to the output shaft of a motor 9. The motor 9 is fixedly connected to the reference platform 3. The tooling fixture 4 is adapted to the damper base 11. When the tooling fixture 4 is at the initial angle, the angle of the installed damper base 11 is the same as that of the dispensing machine 2; a lifting plane 5, which is placed above the reference platform 3 and can move up and down and slide horizontally relative to the tooling fixture 4; and a gear pump 6, which is fixedly connected to the lifting plane 5. Its input end is connected to the pressure plate pump 1 through a pipeline for quantitatively delivering damping grease.

[0034] It should be noted that the motor 9 is equipped with an encoder, and the controller accurately corresponds to the first and second zones based on the number of pulses fed back by the encoder; the tooling fixture 4 is provided with a positioning pin / mechanical limit block for limiting the initial placement angle of the damper base 11 to prevent misalignment.

[0035] It also includes a glue injection assembly 7, which is fixedly installed at the lower end of the gear pump 6 and connected to the output end of the gear pump 6. The glue injection assembly 7 corresponds vertically to the tooling fixture 4. The glue injection assembly 7 includes a guide tube 71, which is detachably installed at the lower end of the gear pump 6 and has an air inlet tube 72 connected to its side wall; a central tube 73, which is located inside the guide tube 71 and connected to the gear pump 6, for guiding the damping grease into the mounting groove of the rotating shaft 12 of the damper base 11; and a pneumatic tube 74, which is movable... The actuator sleeve is fitted on the outside of the central tube 73 and has a gap between it and the central tube 73. The pneumatic tube 74 is placed inside the guide tube 71. The piston tube 75 is fitted on the outside of the pneumatic tube 74 and is placed at the end of the pneumatic tube 74 close to the gear pump 6. The lower end of the piston tube 75 and the middle part of the pneumatic tube 74 combine to form an inflation chamber 77. The gas in the air inlet tube 72 can enter the space between the pneumatic tube 74 and the central tube 73 through the inflation chamber 77 to clean the outer wall of the end of the central tube 73.

[0036] During operation, the gear pump 6 responds to control signals to deliver a single, quantitative supply of damping grease, which is the basis for precise filling. The connection between the lifting plane 5 and the entire dispensing module allows the gear pump 6 and the dispensing assembly 7 to function as a whole. By adjusting the height of the lifting plane 5, it can accommodate damper bases 11 of different specifications, and its horizontal sliding capability can be used to align the dispensing position of the center tube 73 with the damper base 11.

[0037] During the filling process, gas enters the inflation chamber 77 through the air inlet pipe 72 and is discharged through the gap between the lower end of the pneumatic pipe 74 and the central pipe 73. During the filling process, a downward airflow is generated on the outer wall of the end of the central pipe 73 at all times to prevent the damping grease from climbing up the outer wall of the central pipe 73 due to its own viscosity, which would cause the damping grease to accumulate on the outer wall of the central pipe 73 and affect the glue injection effect.

[0038] After a single filling and metering operation, external positive pressure gas introduced through the air inlet pipe 72 first enters the inflation chamber 77. At this time, the air pressure drives the pneumatic tube 74 to undergo axial displacement relative to the piston tube 75 and the central tube 73. This displacement causes the lower end face of the pneumatic tube 74 to pass over the lower end face of the central tube 73, blowing off any residual damping grease at the end of the central tube 73. This active removal of residual damping grease before the central tube 73 is lifted off the liquid surface of the damper base 11 ensures the cleanliness of the work area. This solves the problem of stringing and dripping caused by cohesive forces when high-viscosity damping grease is broken.

[0039] Specifically, the glue injection assembly 7 also includes: a separator ring 741, which is fixedly connected to the outside of the pneumatic tube 74 and slides and seals with the inner wall of the guide tube 71, and an elastic reset member 78 is provided between the lower end of the separator ring 741 and the guide tube 71; a fixing ring 751, which is fixedly connected to the inside of the piston tube 75 and slides and seals with the outer wall of the pneumatic tube 74; an inflation chamber 77 is located between the separator ring 741 and the fixing ring 751; and a connecting hole 742, which is opened in the middle of the pneumatic tube 74 and is located in the inflation chamber 77.

[0040] It should be noted that the elastic reset element 78 can be a conical spring or a wave spring arranged around the pneumatic tube 74. Both the separating ring 741 and the fixing ring 751 are provided with annular grooves and fitted with O-rings or star-shaped sealing rings to ensure absolute airtightness during the sliding process.

[0041] When the inflation chamber 77 is at the first pressure, gas enters the space between the pneumatic tube 74 and the central tube 73 through the connecting hole 742, and the volume of the inflation chamber 77 is the first volume; when the inflation chamber 77 is at the second pressure, some gas enters the space between the pneumatic tube 74 and the central tube 73 through the connecting hole 742, and the volume of the inflation chamber 77 is the second volume; the first pressure is less than the second pressure, and the first volume is less than the second volume.

[0042] It should be noted that when the pressure is first, the gas input into the intake pipe 72 can be completely discharged through the connecting hole 742. At this time, due to the influence of the elastic reset member 78, the pneumatic pipe 74 will not move downward. When the pressure in the inflation chamber 77 reaches the second pressure, the gas flow rate input into the intake pipe 72 is greater than the limit flow rate that the connecting hole 742 can pass through. At this time, the inflation chamber 77 expands, pushing the partition ring 741 to move downward and squeezing the elastic reset member 78, causing the pneumatic pipe 74 to move downward.

[0043] During the injection of damping grease, the air chamber 77 is at the first pressure (low-pressure airflow). The gas in the air chamber 77 enters the annular gap between the pneumatic tube 74 and the central tube 73 through the connecting hole 742, continuously blowing the end of the central tube 73 to form an annular air curtain. This is used to remove any trace impurities that may remain at the tube opening before injection and to prepare for the air curtain shielding to prevent the damping grease from climbing upwards. It should be noted that during the injection of damping grease, the distance between the lower end of the pneumatic tube 74 and the damper base 11 is greater than the distance between the lower end of the central tube 73 and the damper base 11 to avoid contact between the damping grease and the pneumatic tube 74.

[0044] During damping grease injection, after the injection assembly 7 is lowered to the working height, the gear pump 6 responds to the controller signal and quantitatively delivers the damping grease, which has been pressure-stabilized by the pressure reducing valve 10, to the central tube 73 and injects it into the base. Simultaneously, the motor 9 drives the tooling fixture 4 to rotate, ensuring the damping grease is evenly distributed within the damper base 11. During this process, the air chamber 77 maintains the initial pressure, and the continuous purging airflow effectively prevents the viscous damping grease from adhering to the outer wall of the central tube 73 due to surface tension, thus suppressing the physical basis of the "stringing" phenomenon at its source.

[0045] It should be noted that after the damping grease is injected, the lifting platform moves upward a short distance, simultaneously increasing the pressure inside the inflation chamber 77. This causes the pneumatic tube 74 to receive a downward axial thrust. When the pressure inside the inflation chamber 77 reaches a second pressure greater than the elastic force of the elastic reset member 78, the pneumatic tube 74 is pushed downward. The upward movement of the lifting platform is slightly greater than the downward movement of the pneumatic tube 74, ensuring that the end of the pneumatic tube 74 does not contact the damping grease inside the damper base 11. The separating ring 741 compresses the elastic reset member 78. Under this second pressure state, the volume of the inflation chamber 77 expands to a second volume.

[0046] After replacing the new damper base 11, when damping grease is injected into it, the pressure in the air inlet pipe 72 drops to the first pressure. At this time, the elastic reset member 78 pushes the pneumatic pipe 74 to reset upward, so that the volume of the air chamber 77 is restored to the first volume, and then the damping grease is injected through the gear pump 6. This process is repeated to achieve the purpose of continuous operation.

[0047] More specifically, it also includes: a lifting assembly 8, which is vertically installed on the top surface of the reference platform 3, used to adjust the position of the lifting plane 5 relative to the tooling fixture 4.

[0048] The lifting assembly 8 provides a precise vertical axis of motion, enabling the lifting plane 5 and the dispensing assembly 7 mounted on it to rise and fall smoothly. During continuous filling, the motor 9 can drive the damper base 11 to rotate, which, in conjunction with the up-and-down movement of the lifting assembly 8, allows the damping grease to be evenly distributed and filled into various positions inside the base, reducing the generation of air bubbles.

[0049] Specifically, the lifting assembly 8 includes: a fixed suspension 81 with an elongated hole 82 at its bottom, which is mounted on the upper end of the reference platform 3 by fasteners; a linear guide rail 83, which is vertically mounted on the side of the fixed suspension 81 near the gear pump 6 and is perpendicular to the reference platform 3; a vertical slide 84, which is slidably mounted on the outside of the linear guide rail 83, and a trapezoidal groove 85 is provided on the side of the vertical slide 84 near the lifting plane 5, which is horizontally positioned relative to the reference platform 3; and a drive component 86, which is fixedly mounted on the bottom of the fixed suspension 81 and has a lifting screw 87 fixedly connected to its output end, with the vertical slide 84 and the lifting screw 87 threadedly engaged.

[0050] The elongated hole 82 at the bottom of the fixed suspension 81 allows for slight compensation of the horizontal position of the fixed suspension 81 during installation, ensuring that the glue injection assembly 7 can correspond to the tooling fixture 4. The drive component 86 drives the lifting screw 87 to rotate, and through the threaded pair, the rotational motion is precisely converted into the linear lifting motion of the vertical slide 84 on the linear guide rail 83, so that the lifting plane 5 can slide relative to the reference plane while remaining parallel to it.

[0051] More specifically, a horizontal slide 51 is fixedly connected to the side of the lifting plane 5 that is close to the vertical slide 84. The horizontal slide 51 can slide along the trapezoidal slide groove 85. A fixing member 52 is fixedly installed in the middle of the horizontal slide 51 to lock the relative position of the horizontal slide 51 and the vertical slide 84.

[0052] The horizontal slide 51, through the cooperation of the locking wedge and the trapezoidal slide 85, forms a horizontal degree of freedom moving pair, allowing the operator to push the entire lifting plane 5, gear pump 6, and glue injection assembly 7 to adjust the alignment of the center tube 73 with the damper base 11. The fixing member 52 uses a locking bolt with a handle. After the position is adjusted, by operating the fixing member 52, its end is pressed against the inner wall of the trapezoidal slide 85 or the cooperating locking wedge, generating a huge frictional force to lock the horizontal degree of freedom, forming a stable rigid connection body to ensure that the positioning relationship does not shift in subsequent reciprocating motion.

[0053] Specifically, a sealing disc 743 is fixedly installed on the top of the pneumatic tube 74. The sealing disc 743 is fixedly connected to the pneumatic tube 74 by means of a snap or bolt. The sealing disc 743 ensures that the pneumatic tube 74 can be inserted into the guide tube 71.

[0054] More specifically, a pressure equalization hole 711 is provided in the middle of the guide tube 71. The pressure equalization hole 711 is located between the sealing plate 743 and the fixing ring 751. The pressure equalization hole 711 ensures that the air pressure inside the cavity between the sealing plate 743 and the fixing ring 751 is consistent with the external natural pressure. During the up-and-down movement of the pneumatic tube 74 and the sealing plate 743, the space inside the guide tube 71 between the sealing plate 743 and the fixing ring 751 is a dynamically changing closed space. The gas in it will hinder the normal response of the pneumatic tube 74 due to volume changes. The opening of the pressure equalization hole 711 connects this dynamically changing chamber with the external atmospheric pressure, eliminates the influence of the reaction force of the closed gas, and ensures that all axial displacements of the pneumatic tube 74 are completely determined by the force balance between the air pressure thrust of the inflation chamber 77 and the elastic force of the elastic reset member 78.

[0055] Specifically, it also includes: a pressure regulating valve 79, which is fixedly installed in the middle of the air inlet pipe 72, used to control the pressure in the air inlet chamber. The pressure regulating valve 79 is existing technology and can accurately adjust the gas pressure entering the inflation chamber 77 according to the setting. It also includes: a pressure reducing valve 10, which is located between the pressure plate pump 1 and the dispensing machine 2, i.e., on the pipeline connecting the pressure plate pump 1 and the input end of the gear pump 6, used to reduce the pressure of the damping grease entering the gear pump 6. The pressure plate pump 1 pressurizes the high-viscosity damping grease from the large container to the pipeline, and its output pressure is relatively high and fluctuates. These pulsating pressures can affect the output accuracy of the gear pump 6 and may also cause leakage. The function of the pressure reducing valve 10 is to eliminate the fluctuating pressure and reduce it to a stable, lower preset value before supplying it to the input end of the gear pump 6, ensuring that the gear pump 6 always draws in damping grease under a constant inlet pressure. This is crucial for ensuring the volumetric accuracy of the gear pump 6's quantitative output.

[0056] More specifically, the dispensing machine 2 also includes a controller, which sets the lifting height of the dispensing component 7 and the rotation angle of the motor 9, and sets the air pressure regulating valve 79 to adjust the pressure in the air chamber 77 in a timely manner; the controller is existing technology and is not shown in the figure.

[0057] In summary, when using the device, select the appropriate tooling fixture 4 according to the size of the damper base 11 to be injected, and adjust the glue injection component 7 to correspond with the tooling fixture 4; then set the lifting height of the glue injection component 7 and the rotation angle of the motor 9, and set the air pressure control valve 79 to adjust the pressure in the air chamber 77 in a timely manner; after setting, place the damper base 11 in the tooling fixture 4 and start the glue dispensing machine 2.

[0058] The glue injection assembly 7 descends to a position close to the base. Then, the gear pump 6 injects damping grease into the central tube 73 according to the setting. At the same time, the tooling fixture 4 drives the base to rotate. After the base rotates one revolution, the set amount of damping grease is completely filled into the base. Then, the gear pump 6 stops pumping and rises so that the end of the central tube 73 is higher than the injected damping grease. At the same time, the pressure in the inflation chamber 77 is increased by the air pressure regulating valve 79. The pneumatic tube 74 is axially displaced relative to the piston tube 75 and the central tube 73, so that the lower end face of the pneumatic tube 74 passes over the lower end face of the central tube 73, causing the damping grease remaining at the end of the central tube 73 to be blown off. After a set delay, the glue injection assembly 7 rises after the timer expires, so that the end of the central tube 73 is away from the damper base 11 for damper replacement.

[0059] After manually replacing the base, the dispensing machine 2 is restarted. The dispensing assembly 7 descends to align the central tube 73 with the base, and the pressure inside the inflation chamber 77 is adjusted to the first pressure. At this time, the pneumatic tube 74 returns to its original position, and airflow is generated in the channel between the pneumatic tube 74 and the central tube 73. Simultaneously, the volume of the inflation chamber 77 returns to the first volume. Then, the motor 9 and gear pump 6 are started to inject damping grease into the new damper base 11. This process is repeated to achieve continuous operation.

[0060] Example 2 The present invention also provides a damper manufacturing process, comprising the following steps: S1: Equipment settings: By manually adjusting the position of the lifting plane 5 relative to the tooling fixture 4, the glue injection assembly 7 can be aligned with the damper base 11.

[0061] S2: Parameter settings: Set the output of gear pump 6 per cycle according to production requirements, and set the rotation speed of tooling fixture 4 and the intake pressure in intake pipe 72.

[0062] S3: Fill with damping grease, lower the glue injection assembly 7, adjust the center tube 73 to be placed inside the damper base 11, and then start the gear pump 6 and motor 9 to fill the damping grease into the damper base 11.

[0063] S4: Glue cut-off, glue injection component 7 rises, tooling fixture 4 rotates to the preset angle, and at the same time increases the pressure in the air chamber 77, the pneumatic tube 74 moves down and the lower end face passes over the lower end face of the central tube 73, cleaning the end of the central tube 73.

[0064] S5: Cycle the process by manually removing the filled damper base 11, rotating the tooling fixture 4 to the initial angle, placing the new damper base 11 again, and repeating S3 and S4.

[0065] Example 3 In actual use, it was found that because the damping grease is evenly distributed in the mounting groove of the shaft 12, when the shaft 12 is installed, some of the damping grease overflows through the through hole in the middle of the shaft 12 under the influence of downward pressure, and reaches the upper end of the shaft 12, so that the damping grease is distributed on both sides of the shaft 12. Because the damping grease is evenly distributed, when the shaft 12 is pressed down, the damping grease in a certain distance between the two through holes is easy to overflow from the circumference of the shaft 12, causing contamination of the edge of the damper base 11 and affecting subsequent welding. Therefore, the relevant components, namely the glue injection method, were further improved.

[0066] Specifically, the mounting groove of the rotating shaft 12 inside the damper base 11 is divided into multiple alternating first and second sections. When the first section is filled with glue, the motor 9 drives the tooling fixture 4 to rotate at a first speed. When the second section is filled with glue, the motor 9 drives the tooling fixture 4 to rotate at a second speed, so that the amount of damping grease injected in the first section is greater than that in the second section.

[0067] Specifically, S3 includes the following steps: S31: During the process of injecting glue into the protrusions and the lower end of the central tube 73 corresponding to the first area, the motor 9 drives the tooling fixture 4 to rotate at a preset first speed. S32: Smooth glue injection. During the process where the lower end of the central tube 73 corresponds to the second zone, the motor 9 drives the tooling fixture 4 to rotate at the preset second speed.

[0068] In summary, during use, after the damper base 11 is installed into the tooling fixture 4, the lower end of the central tube 73 initially corresponds to the first zone. During the glue injection process, the motor 9 drives the tooling fixture 4 to rotate at the first speed. When the lower end of the central tube 73 passes the first zone and enters the second zone, the motor 9 drives the tooling fixture 4 to rotate at the second speed. When it passes the second zone and enters the next first zone, the tooling fixture 4 is driven to rotate at the first speed again. This process is repeated to make the tooling fixture 4 rotate one revolution, thus completing the glue injection.

[0069] Then, the rotating shaft 12 is installed, and the position of the through hole of the rotating shaft 12 corresponds to the first area. Since the amount of damping grease injected in the first area is greater than that in the second area, when the rotating shaft 12 is pressed down, a large amount of damping grease preferentially enters the rotating shaft 12 through the through hole, reducing the amount of damping grease passing between the outer wall of the rotating shaft 12 and the inner wall of the damper, and preventing the damping grease from entering the welding area of ​​the damper base 11.

[0070] Example 4 During the actual glue dispensing process, it was found that when applying damping grease to the first zone, the amount of glue dispensing was increased by reducing the rotation speed of the tooling fixture 4. However, due to the increased amount of damping grease, the damping grease accumulated on the outer wall of the central tube 73, affecting subsequent glue dispensing. It also easily caused the damping grease to be applied to the edge of the damper base 11, affecting subsequent processes.

[0071] Specifically, when dispensing adhesive into the first area, the pressure inside the inflation chamber 77 is increased to maintain a third pressure, which is lower than the first pressure. At the third pressure, the volume of the inflation chamber 77 remains at the first volume, preventing the elastic reset member 78 from being compressed and contracted. When dispensing adhesive into the second area, the pressure inside the inflation chamber 77 is adjusted back to the first pressure.

[0072] In summary, when dispensing adhesive into the first zone, by reducing the airflow pressure between the pneumatic tube 74 and the central tube 73, the height of the dispensing assembly 7 is adjusted upwards to prevent the damping grease from climbing up along the outer wall of the central tube 73, thus preventing the high-speed airflow from blowing the damping grease in the first zone outwards and ensuring that the damping grease can generate protrusions in the first zone. When dispensing adhesive into the second zone, the pressure inside the air chamber 77 is restored, and the dispensing assembly 7 is restored to the working height (close to the height of the damper base 11). After the dispensing is completed, since the damping grease is a high-viscosity liquid, the level of the damping grease in the first zone is slightly higher than that in the second zone.

[0073] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A damper manufacturing equipment, comprising a pressure plate pump and a dispensing machine, wherein the pressure plate pump delivers damping grease to the dispensing machine via a pipeline, and the dispensing machine injects the damping grease into a shaft mounting groove in a damper base, characterized in that, The dispensing machine includes a reference platform, which is horizontal; The tooling fixture is rotatably mounted above the reference platform to fix the damper base. The bottom of the tooling fixture is connected to the motor output shaft, and the motor is fixedly connected to the reference platform. The lifting plane is positioned above the reference platform and can move up and down and slide horizontally relative to the tooling fixture. A gear pump, which is fixedly connected to the lifting plane and whose input end is connected to the pressure plate pump, is used to quantitatively deliver damping grease; The glue injection assembly is fixedly installed at the lower end of the gear pump and connected to the output end of the gear pump. The glue injection assembly is vertically aligned with the tooling fixture. The glue injection assembly includes a guide tube, which is detachably installed at the lower end of the gear pump and has an air inlet pipe connected to its side wall. The central tube, located inside the guide tube and connected to the gear pump, is used to guide the damping grease into the damper base. The pneumatic tube is movably fitted outside the central tube and has a gap between it and the central tube. The pneumatic tube is placed inside the guide tube. The piston tube is sleeved on the outside of the pneumatic tube and is located at the end of the pneumatic tube close to the gear pump. The lower end of the piston tube and the middle part of the pneumatic tube combine to form an inflation chamber. Gas in the intake tube can enter the space between the pneumatic tube and the central tube through the inflation chamber to clean the outer wall of the end of the central tube. The separator ring is fixedly connected to the outside of the pneumatic tube and slides and seals with the inner wall of the guide tube. An elastic reset element is provided between the lower end of the separator ring and the guide tube. The retaining ring is fixedly connected to the inner side of the piston tube and slides and seals with the outer wall of the pneumatic tube. The inflation chamber is located between the partition ring and the fixing ring; The connecting hole is located in the middle of the pneumatic tube and is placed inside the inflation chamber; When the pressure inside the inflation chamber is the first pressure, gas enters the space between the pneumatic tube and the central tube through the connecting hole, and the volume of the inflation chamber is the first volume. When the pressure inside the inflation chamber is the second pressure, some gas enters between the pneumatic tube and the central tube through the connecting hole, and the volume of the inflation chamber is the second volume. The first pressure is less than the second pressure, and the first volume is less than the second volume; The shaft mounting groove inside the damper base is divided into multiple alternating first and second sections. When the first section is filled with adhesive, the motor drives the tooling fixture to rotate at a first speed. When the second section is filled with adhesive, the motor drives the tooling fixture to rotate at a second speed, so that the amount of damping grease injected in the first section is greater than that in the second section.

2. The damper manufacturing equipment according to claim 1, characterized in that, Also includes: The lifting assembly is vertically mounted on the top surface of the reference platform and is used to adjust the position of the lifting plane relative to the tooling fixture. The lifting assembly includes: a fixed suspension with an elongated hole at its bottom, which is mounted on the upper end of the reference platform by fasteners; The linear guide rail is vertically mounted on the side of the fixed suspension near the gear pump and is set perpendicular to the reference platform. A vertical slide table is slidably mounted on the outside of a linear guide rail. A trapezoidal groove is provided on the side of the vertical slide table near the lifting plane. The trapezoidal groove is set horizontally relative to the reference platform. The drive unit is fixedly installed at the bottom of the fixed suspension, and the output end is fixedly connected to the lifting screw. The vertical slide is threadedly engaged with the lifting screw.

3. The damper production equipment according to claim 2, characterized in that, A horizontal slide is fixedly connected to the side of the lifting plane that is close to the vertical slide, and the horizontal slide can slide along the trapezoidal slide groove. A fixing component is fixedly installed in the middle of the horizontal slide to lock the relative position of the horizontal slide and the vertical slide.

4. The damper production equipment according to claim 1, characterized in that, A sealing disc is fixedly installed on the top of the pneumatic tube.

5. The damper production equipment according to claim 4, characterized in that, Also includes: The air pressure regulating valve is fixedly installed in the middle of the air intake pipe and is used to control the pressure in the air intake chamber. A pressure-flattening hole is provided in the middle of the guide tube, and the pressure-flattening hole is located between the sealing plate and the fixing ring.

6. The damper production equipment according to claim 1, characterized in that, Also includes: A pressure reducing valve is installed between the pressure plate pump and the dispensing machine to reduce the pressure of damping grease entering the gear pump.

7. A damper manufacturing process, applicable to the damper manufacturing equipment as described in any one of claims 1-6, characterized in that, Includes the following steps: S1: Equipment settings, manually adjust the position of the lifting plane relative to the tooling fixture so that the glue injection assembly can correspond to the damper base; S2: Parameter settings, set the output of the gear pump per cycle according to production requirements, and set the rotation speed of the tooling fixture and the intake pressure in the intake pipe; S3: Fill with damping grease, lower the glue injection assembly, adjust the center tube to be placed inside the damper base, and then start the gear pump and motor to fill the damping grease into the damper base. S4: Disconnect glue. After filling, the glue injection component rises, the tooling fixture rotates to the preset angle, and the pressure in the inflation chamber increases. The pneumatic tube moves down and the lower end face passes over the lower end face of the central tube to clean the end of the central tube. S5: Cycle through the process. Manually remove the damper base after filling, rotate the fixture to the initial angle, place the new damper base, and repeat S3 and S4.

8. The damper manufacturing process according to claim 7, characterized in that, S3 includes the following steps: S31: During the process of injecting glue into the convex dots and the lower end of the central tube corresponding to the first area, the motor drives the tooling fixture to rotate at a preset first speed and maintains the third pressure in the air chamber. S32: Smooth glue injection. During the process of the lower end of the central tube corresponding to the second zone, the motor drives the tooling fixture to rotate at a preset second speed and maintains the first pressure in the inflation chamber.

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