A high-pressure pump head shell assembling machine

Abstract

This application discloses a high-pressure pump head housing assembly machine, relating to the field of automation equipment technology. It addresses the problems of low efficiency and poor precision in existing manual assembly processes, as well as the fragmented processes in traditional automated equipment. The machine includes a turntable machine and, along its circumference, loading stations, housing assembly stations, spring assembly stations, valve cap assembly stations, a vision inspection module, an ultrasonic welding station, and a material sorting station. It also includes auxiliary modules such as a spring inspection and screening machine and a valve cap feeding vibratory plate. During operation, the turntable machine drives the workpieces to rotate intermittently, and each station achieves precise assembly through servo drive, vision positioning, and pressure feedback. Vision inspection is linked with the welding and material sorting stations to screen defective products in real time. This assembly machine integrates full-process automation, boasts high single-shift capacity, high assembly precision, and a high product qualification rate, making it suitable for the large-scale production of high-pressure pump heads for cleaning robots, industrial washing machines, and other applications.

Description

Technical Field

[0001] This utility model relates to the field of automated equipment technology, and in particular to a high-pressure pump head housing assembly machine that integrates multi-station collaborative operation, real-time detection and intelligent material distribution functions. It is suitable for high-precision, large-scale assembly and production of high-pressure pump heads in equipment such as cleaning robots and industrial washing machines. Background Technology

[0002] As a core component of fluid control, the high-pressure pump head requires precise assembly and welding of the housing, valve needle, spring, and valve cap. Assembly accuracy directly affects the pump head's pressure resistance and service life. Currently, the industry's assembly methods suffer from two types of technical defects: 1. Inherent limitations of manual assembly: Relying on manual labor to complete processes such as housing installation, spring loading, and valve cap alignment presents three major problems: First, deviations in spring compression control lead to fluctuations in pump head flow; second, misalignment of the valve cap before welding causes welding seal failure; and third, the single-shift production capacity is only 1,500-2,000 pieces, which cannot meet the production needs of tens of thousands of complete machines.

[0003] 2. Shortcomings of existing automated equipment: Some enterprises use single-function automated equipment (such as independent spring assembly machines and welding machines), but there are problems with the connection between processes: ① Manual transfer of workpieces is required between different machines, and the secondary positioning error reaches 0.2-0.3mm; ② There is a lack of real-time detection mechanism, and defective products flow into the next process, which increases the rework cost after welding by 30%; ③ The equipment has poor compatibility, and changing the pump head model requires re-adjusting the whole machine, with a switchover time of more than 4 hours.

[0004] Therefore, developing an integrated equipment that combines "continuous conveying, precise assembly, real-time detection, intelligent welding, and automatic material distribution" is the key to solving the above-mentioned technical bottlenecks. Utility Model Content

[0005] The purpose of this invention is to address the problems of low efficiency and poor precision in manual assembly in existing technologies, as well as the fragmented processes, delayed detection, and weak compatibility of traditional automated equipment. This invention provides a high-pressure pump head housing assembly machine that achieves fully automated assembly of the high-pressure pump head housing through modular workstation design, multi-dimensional detection linkage, and intelligent control algorithms, thereby improving assembly accuracy, production efficiency, and flexibility.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is: a high-pressure pump head housing assembly machine, comprising: A turntable machine, and a feeding station, a housing assembly station, a spring assembly station, a valve cap assembly station, a vision inspection module, an ultrasonic welding station, and a material sorting station arranged sequentially along the circumference of the turntable machine; A spring feeder and a spring inspection and screening machine are used in conjunction with the spring assembly station. The spring feeder is used to supply springs to the spring inspection and screening machine, and the spring inspection and screening machine is used to screen qualified springs. A valve cap feeding vibratory feeder that cooperates with the valve cap assembly station is used to supply valve caps to the valve cap assembly station. An ultrasonic welding machine is used in conjunction with the ultrasonic welding station to weld the assembled high-pressure pump head housing. NG material bins that work in conjunction with the material dispensing station; The rotary table is used to move the workpieces to be assembled between the feeding station, the housing assembly station, the spring assembly station, the valve cap assembly station, the ultrasonic welding station, and the sorting station; the vision inspection module is used to detect the assembly status of the springs at the spring assembly station and the assembly status of the valve caps at the valve cap assembly station; the sorting station is used to classify qualified workpieces and unqualified workpieces according to the detection results of the vision inspection module, and to send the unqualified workpieces into the NG material box.

[0007] In a preferred embodiment, the feeding station includes a material tray and a laser sensor. The material tray is used to place the housing and the valve needle, and the laser sensor is used to detect whether the housing and the valve needle are placed in the material tray.

[0008] In a preferred embodiment, the discharge end of the spring inspection and screening machine is connected to the feed end of the spring assembly station, so as to transport the screened qualified springs to the spring assembly station, whereby the spring assembly station assembles the qualified springs onto the valve needle.

[0009] In a preferred embodiment, the visual inspection module includes a first inspection unit and a second inspection unit; the first inspection unit is set at the spring assembly station and is used to detect whether a spring is missing at the spring assembly station; the second inspection unit is set at the valve cap assembly station and is used to detect whether a valve cap is missing at the valve cap assembly station.

[0010] In a preferred embodiment, the material sorting station is equipped with a gantry robot, which is signal-connected to the vision inspection module. The gantry robot is used to grasp workpieces according to the detection results of the vision inspection module, place qualified workpieces on the product tray, and send unqualified workpieces into the NG material box.

[0011] In a preferred embodiment, the ultrasonic welding machine is signal-connected to the vision inspection module; the ultrasonic welding machine only performs welding operations on workpieces that have passed the inspection by the vision inspection module.

[0012] Due to the application of the above technical solution, the beneficial effects of this application compared with the prior art are as follows: 1. Improved Precision: Through triple control of “servo drive + vision positioning + pressure feedback”, the coaxiality of the housing and valve needle assembly is ≤0.05mm, the spring compression deviation is ≤0.1mm, and the valve cap welding concentricity is ≤0.1mm, which improves the precision by 80% compared with manual assembly and solves the problem of secondary positioning error in traditional equipment.

[0013] 2. Efficiency improvement: Multi-station parallel operation achieves a single-shift production capacity of 10,000 pieces (5 times higher than manual operation), with equipment utilization rate ≥95%, and workpiece transfer time reduced by more than 30% through process integration.

[0014] 3. Quality closed loop: Four-fold inspection is set up (material loading posture detection, spring dual parameter screening, assembly visual inspection, and welding temperature monitoring), which increases the product qualification rate from 85% for manual assembly to 99.5%, and the defective product traceability rate is 100%.

[0015] 4. Flexible production: The combination of quick-change fixtures and parametric programming reduces changeover time from 4 hours for traditional equipment to 15 minutes. It can adapt to high-pressure pump head housings of different specifications from φ20 to φ50mm, meeting the needs of multi-variety small-batch production.

[0016] 5. Cost optimization: Each machine requires only one operator, saving more than 600,000 yuan in labor costs per year; the reduced defect rate reduces rework costs by about 200,000 yuan per year, and the investment payback period is ≤8 months. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Appendix Figure 1 This is a top view of the overall structure of a high-pressure pump head housing assembly machine according to the present invention; Appendix Figure 2 This is a structural diagram of the material loading station; Appendix Figure 3 This is a structural schematic diagram of the spring assembly station; Appendix Figure 4 A schematic diagram of the valve cap assembly station; The components include: 1. Feeding station; 2. Shell assembly station; 3. Spring assembly station; 4. Valve cap assembly station; 5. Vision inspection module; 6. Ultrasonic welding station; 7. Material sorting station; 8. Spring feeder; 9. Spring inspection and screening machine; 10. Turntable machine; 11. Valve cap feeding vibratory plate; 12. Ultrasonic welding machine; 13. NG material bin; 14. Laser sensor; 15. Material tray. Detailed Implementation

[0019] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0020] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0021] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing the present invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0022] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0023] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] Example 1 Appendix Figures 1-4 This utility model discloses a high-pressure pump head housing assembly machine. Based on the core principle of "modular division of labor + sequential collaboration + closed-loop detection," it uses a turntable machine 10 to achieve intermittent flow of workpieces at each station. Combined with a sensor and PLC control system, it integrates the processes of "feeding-assembly-inspection-welding-material distribution." Its core logic is: mechanical actions execute assembly, sensors detect quality in real time, and electrical signals control the start and stop of processes, ultimately achieving full-process automation and quality control. Specifically, it includes: 1. Turntable 10, driven by servo motor + cam divider, with a diameter of 1400mm and a positioning accuracy of ±0.02mm. The intermittent rotation cycle can be set by PLC programming (adjustable from 3 to 6s), driving the fixture plate to move synchronously between each station; the fixture plate has a built-in quick-change positioning chuck, which fixes the workpiece by magnetic attraction + mechanical limit, and only the chuck needs to be replaced when changing the model (changeover time ≤15 minutes).

[0026] Working principle: It adopts a drive combination of "servo motor + cam divider" to achieve high precision of workstation switching through mechanical rigid positioning, and at the same time, it controls the flow cycle through PLC programming to adapt to the cycle requirements of different processes.

[0027] Implementation process: The servo motor receives pulse signals from the PLC and drives the cam divider to rotate. The divider converts the continuous rotational motion into intermittent rotation of the jig disk (it pauses for 5 seconds after every 60° rotation, corresponding to the circumferential distribution of 7 workstations).

[0028] The mechanical locking structure of the cam divider ensures that the positioning accuracy of the fixture disk reaches ±0.02mm when it is in a stop position, thus preventing workpiece displacement during station switching.

[0029] The quick-change chuck on the jig plate fixes the workpiece by "magnetic attraction + spring pin": the magnetic attraction provides the basic clamping force (5N), and the spring pin (diameter 2mm) is inserted into the workpiece positioning hole to further limit radial wobble (gap ≤0.03mm) and ensure the workpiece position is stable during subsequent assembly.

[0030] Functional workstations are arranged sequentially along the 10 circumferences of the rotary table machine: 2. Feeding station 1: includes a material tray 15 with guide groove, a laser sensor 14 and two-hand start buttons; the material tray 15 can accommodate 12 sets of housings and valve needles, the laser sensor 14 (resolution 0.01mm) scans and detects the presence and placement of materials, if tilting (≥1°) or missing is detected, an audible and visual alarm is triggered and the turntable 10 is locked.

[0031] Working principle: The laser sensor 14 performs dual detection of the "presence" and "posture" of the material to ensure that the initial conditions for subsequent assembly are qualified. At the same time, the human-machine safety interlock is realized through the two-hand start button.

[0032] Implementation process: The operator places the housing (φ30×40mm) and valve needle (φ5×30mm) into the positioning slot of the material tray 15. The positioning slot ensures that the material is initially aligned (deviation ≤0.5mm) through mechanical limiting. Laser sensor 14 emits a laser beam to scan the material surface and receives the contour data of the reflected light (resolution 0.01 mm), comparing it with a preset standard contour (housing opening facing upwards, valve needle placed vertically): If material loss (no reflected signal) or tilting (profile deviation ≥1°) is detected, the sensor sends an "abnormal signal" to the PLC. The PLC triggers an audible and visual alarm (red warning light + buzzer) and locks the turntable machine 10 to prevent it from starting.

[0033] If the test is successful, the sensor sends a "ready signal", the two start buttons light up, and the operator presses both buttons at the same time (to prevent accidental operation with one hand). After receiving the start signal, the PLC controls the 10 servo motors of the turntable to start.

[0034] 3. Housing Assembly Station 2: Equipped with a three-axis servo module (repeat positioning accuracy ±0.01mm), gripper cylinder (clamping force adjustable 5-10N) and pressure feedback sensor; after identifying the valve needle position through visual positioning (2-megapixel camera), the gripper grabs the housing and fits it according to the preset trajectory. The pressure sensor monitors the assembly force in real time (threshold 0.3-0.5MPa). If the stroke is exceeded or the pressure is abnormal, it will automatically reset and mark NG.

[0035] Working principle: The system compensates for the initial deviation of the workpiece through visual positioning, and monitors the assembly force in real time with a pressure sensor to avoid damage to the workpiece due to overpressure or loosening of the assembly due to underpressure, thus achieving dual closed-loop control of "position + force".

[0036] Implementation process: After the workpiece is transferred to the housing assembly station 2, a 2-megapixel vision camera (30fps) captures an image of the top of the valve needle. The center coordinates of the valve needle are identified by the image algorithm (accuracy ±0.01mm), and the coordinate deviation data is sent to the three-axis servo module.

[0037] The servo module drives the gripper cylinder (clamping force 8N) to grab the housing from the material tray 15 and move it directly above the valve needle according to the deviation compensation motion trajectory.

[0038] The gripper descends to fit the housing, and a pressure sensor (range 0-1MPa, accuracy ±0.01MPa) monitors the assembly force in real time. When the force reaches the preset threshold of 0.4MPa and the insertion depth reaches 25mm (confirmed by the servo encoder), the assembly is deemed qualified and the module is reset.

[0039] If the force exceeds 0.6MPa (possibly due to foreign object jamming) or the depth does not meet the standard (possibly due to shell deformation), the PLC marks the workpiece as NG, and subsequent processes will not perform assembly on it.

[0040] IV. Spring Assembly Station 3: Composed of a feeding channel, a rotating indexing plate, and a pressing cylinder; linked with the spring feeding system, after receiving qualified springs after screening, the rotating indexing plate realizes the continuous action of "temporary storage-positioning-pressing". The pressing depth is precisely controlled by a servo motor (±0.05mm) to ensure the consistency of spring compression (deviation ≤0.1mm).

[0041] Working principle: The spring inspection and screening machine 9 physically screens the springs based on their "elasticity" and "size" to remove unqualified products; the rotating indexing plate realizes the temporary storage and quantitative supply of springs, matched with the turntable machine 10 cycle.

[0042] Implementation process: The spring feeder uses a vibrating plate to transport springs (free length 8mm) along a spiral track to the spring inspection and screening machine 9. The distributing cylinder at the end of the track pushes the springs one by one into the inspection channel.

[0043] Inside the detection channel, a pressure sensor (range 0-5N) compresses a spring to a preset length (6mm) via a push rod, detecting the spring force value (acceptable range 1.2±0.1N); simultaneously, a laser diameter gauge (accuracy ±0.005mm) detects the spring wire diameter (acceptable range 0.8±0.02mm). Springs that pass both parameter tests are blown into the storage tank (capacity 3) of the rotating indexing plate by the air valve of the screening machine.

[0044] Non-conforming springs (such as spring force 1.4N or wire diameter 0.78mm) are discharged into the NG material box by the scrap pusher.

[0045] After three qualified springs accumulate in the storage tank, the indexing plate (driven by a stepper motor) rotates 120° to send the spring to the pressing position. The pressing cylinder (stroke 10mm) moves down to press the spring to the designated position of the valve needle (compressed length 6mm). After completion, the indexing plate resets and continues to feed.

[0046] V. Valve cap assembly station 4 and vision inspection module 5: The valve cap assembly station 4 includes a vacuum nozzle (vacuum degree - 0.7 bar), a rotating swing arm, and a pressing cylinder. After the valve cap is picked up from the valve cap feeding vibratory plate 11, the swing arm rotates 90° to the assembly position, and the pressing cylinder completes the assembly in two stages: "pre-pressure (0.2 MPa) - pressure holding (0.3 MPa)" to avoid the valve cap from tilting.

[0047] The visual inspection module 5 adopts a dual-camera architecture. The first inspection unit (spring inspection) is equipped with a 45° tilted light source, which uses image grayscale analysis to determine whether the spring is missing or misaligned (inspection accuracy 0.05mm). The second inspection unit (valve cap inspection) uses a coaxial light source to identify the concentricity of the valve cap edge and the housing (allowable deviation ≤0.1mm). The inspection results are transmitted to the PLC in real time.

[0048] Working principle: The valve cap assembly achieves non-destructive gripping through vacuum adsorption, and the two-stage pressing avoids skewing; visual inspection uses image grayscale analysis and edge recognition to determine whether the assembly is in place, providing a release signal for subsequent processes.

[0049] Implementation process: The valve cap feeding vibratory plate 11 vibrates to arrange the valve caps (outer diameter φ25mm) along the track. The elastic guide strip (silicone material) on the inner wall of the track forces the valve cap openings to face upwards (if the deviation is >5°, they will be rejected by the edge of the track). After the end fiber optic sensor detects the valve cap, the baffle cylinder extends to position it.

[0050] The vacuum generator (vacuum degree - 0.7 bar) at valve cap assembly station 4 picks up the valve cap through the suction nozzle, and the rotating arm (90° rotation, time 0.5s) moves it to directly above the workpiece. The pressure cylinder first pre-pressurizes it with 0.2MPa (to avoid impact), and then holds it at 0.3MPa for 1s (to ensure fit). Then the vacuum is broken to release the valve cap.

[0051] The dual cameras of the visual inspection module 5 operate synchronously: First detection unit (spring detection): A 45° tilted light source illuminates the gap between the spring and the valve needle. After the camera captures the image, it identifies whether the spring is missing (gray value of the area without spring > 200) or misaligned (edge ​​offset ≥ 0.1mm) by the grayscale difference.

[0052] The second detection unit (valve cap detection): a coaxial light source is used to vertically illuminate the joint between the valve cap and the housing. The concentricity between the two is calculated by an edge detection algorithm (pass threshold ≤ 0.1mm). The detection result (OK / NG) is written to the workpiece information register of the PLC in real time.

[0053] 6. Ultrasonic Welding Station 6: Equipped with an adjustable-power ultrasonic welding machine 12 (500-800W), linked with the visual inspection module 5; welding is only started on workpieces that have passed inspection. Welding parameters (amplitude 30-50μm, time 0.8-1.2s) can be preset according to the pump head model. After welding, the welding area temperature (≥80℃) is detected by an infrared temperature sensor to confirm the welding effectiveness.

[0054] Working principle: Based on the condition triggering mechanism of visual inspection results, welding is only performed on qualified workpieces; ultrasonic vibration melts the contact surface, and temperature detection verifies the welding strength to avoid invalid welding.

[0055] Implementation process: After the workpiece is transferred to the welding station, the PLC reads the visual inspection results of the workpiece: If "OK" is selected, the ultrasonic welding machine 12 starts: the transducer converts electrical energy into 20kHz mechanical vibration, which is transmitted to the contact surface between the valve cap and the housing through the welding head (made of titanium alloy with a hardness of HRC35). Friction generates heat and melts the contact surface (temperature ≥80℃). It is then cooled and solidified under a pressure of 0.3MPa. The welding time is 1s (controlled by the PLC timer).

[0056] If the result is "NG", the welding machine will remain in standby mode and will not perform any actions.

[0057] After welding is completed, an infrared temperature sensor (detection range -20~300℃) monitors the temperature of the welding area in real time. If the temperature is ≥80℃ (indicating sufficient melting), the welding is deemed qualified; otherwise, it is marked as "welding defective".

[0058] 7. Material sorting station 7: Equipped with a four-axis SCARA robot (repeat positioning accuracy ±0.05mm) and finished / NG material channels; After receiving the material sorting signal from the PLC, the robot grabs the workpieces through the end gripper (with anti-slip rubber pads). Qualified parts are placed in the finished product tray with QR code traceability, and NG parts are classified into the partitions of NG material box 13 according to the defect type (spring problem / valve cap problem / welding problem).

[0059] Working principle: Based on the workpiece full-process inspection data stored in the PLC, the robot realizes automatic classification of qualified / unqualified workpieces, and at the same time realizes quality traceability by associating the inspection data with the pallet QR code.

[0060] Implementation process: The four-axis SCARA robot (with repeatability of ±0.05mm) reads the defect codes of the current workpiece from the PLC (such as "spring tension is unqualified", "valve cap misalignment", "poor welding" etc.).

[0061] If the workpiece is qualified, the robot's end effector gripper (with silicone anti-slip pad and a gripping force of 10N) grabs the workpiece and moves it to the finished product tray (the tray has a pre-set QR code). After the barcode scanner reads the QR code, the PLC uploads the workpiece's inspection data (such as spring force 1.2N and welding temperature 85℃) to the MES system to achieve traceability.

[0062] If the workpiece is defective, the robot places it into the corresponding section of the NG bin 13 (such as "spring area", "valve cap area" or "welding area") according to the defect code, which facilitates subsequent analysis of the cause of the defect.

[0063] Equipment linkage control principle: Each workstation communicates with other PLCs (equipped with EtherCAT bus) via millisecond-level signal exchange. The core control logic is as follows:

[0064] Timing coordination: The PLC synchronously controls the action sequence of equipment such as the turntable machine 10, servo module, and welding machine through pulse signals to ensure the logical chain of "completion of the previous process → start of the next process" (such as the visual inspection OK signal triggering the welding machine to start).

[0065] Anomaly Handling: If any sensor detects an anomaly (such as insufficient material or excessive pressure), the PLC will immediately send a pause signal to the relevant workstation and display a fault code (such as "E01: Insufficient spring supply") on the touch screen for quick troubleshooting.

[0066] Adjustable parameters: The parameters of each process (such as welding time and assembly pressure) can be modified via the touch screen. The parameter modification records are automatically archived to meet the production needs of different pump head models (such as the welding time of φ20mm pump head can be adjusted to 0.8s).

[0067] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.

Claims

1. A high pressure pump head housing assembly machine characterized by, include: A turntable machine, and a feeding station, a housing assembly station, a spring assembly station, a valve cap assembly station, a vision inspection module, an ultrasonic welding station, and a material sorting station arranged sequentially along the circumference of the turntable machine; A spring feeder and a spring inspection and screening machine are used in conjunction with the spring assembly station. The spring feeder is used to supply springs to the spring inspection and screening machine, and the spring inspection and screening machine is used to screen qualified springs. A valve cap feeding vibratory feeder that cooperates with the valve cap assembly station is used to supply valve caps to the valve cap assembly station. An ultrasonic welding machine is used in conjunction with the ultrasonic welding station to weld the assembled high-pressure pump head housing. NG material bins that work in conjunction with the material dispensing station; The rotary table is used to move the workpieces to be assembled between the feeding station, the housing assembly station, the spring assembly station, the valve cap assembly station, the ultrasonic welding station, and the sorting station; the vision inspection module is used to detect the assembly status of the springs at the spring assembly station and the assembly status of the valve caps at the valve cap assembly station; the sorting station is used to classify qualified workpieces and unqualified workpieces according to the detection results of the vision inspection module, and to send the unqualified workpieces into the NG material box.

2. The high pressure pump head housing assembly machine of claim 1, wherein, The feeding station includes a material tray and a laser sensor. The material tray is used to place the housing and valve needle, and the laser sensor is used to detect whether the housing and valve needle are placed in the material tray.

3. The high pressure pump head housing assembly machine of claim 1 or 2, wherein, The discharge end of the spring inspection and screening machine is connected to the feed end of the spring assembly station, so as to transport the qualified springs after screening to the spring assembly station, where the qualified springs are assembled onto the valve needle.

4. The high-pressure pump head housing assembly machine according to claim 1 or 2, characterized in that, The visual inspection module includes a first inspection unit and a second inspection unit; the first inspection unit is set at the spring assembly station and is used to detect whether there is a missing spring at the spring assembly station; the second inspection unit is set at the valve cap assembly station and is used to detect whether there is a missing valve cap at the valve cap assembly station.

5. The high pressure pump head housing assembly machine of claim 1 or 2, wherein, The material sorting station is equipped with a gantry robot, which is signal-connected to the vision inspection module. The gantry robot is used to grab workpieces according to the detection results of the vision inspection module, place qualified workpieces on the product tray, and send unqualified workpieces into the NG material box.

6. The high pressure pump head housing assembly machine of claim 1 or 2, wherein, The ultrasonic welding machine is connected to the vision inspection module via a signal connection; the ultrasonic welding machine only performs welding operations on workpieces that have passed the inspection by the vision inspection module.

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