Automatic sorting equipment for plate springs

Abstract

The invention relates to the technical field of plate spring production, in particular to automatic sorting equipment for plate springs. The equipment comprises an equipment body, a feeding mechanism and a discharging mechanism are arranged on the two opposite sides of the equipment body respectively, the equipment body comprises a workbench, a stepping conveying mechanism is installed on the workbench, and pin penetrating assemblies corresponding in position are installed on the two opposite sides of the stepping conveying mechanism; the pin penetrating assembly comprises a first pin shaft assembly, a plate spring mounting frame and a second pin shaft assembly; the plate spring positioning mechanism is arranged on the side, facing the feeding mechanism, of the equipment body; the sorting assembly is mounted on the equipment main body, and the sorting assembly comprises a pressure applying mechanism, a load measuring mechanism, a displacement measuring mechanism and an automatic code spraying mechanism; and the hydraulic and electric control system is connected with the feeding mechanism, the plate spring positioning mechanism, the sorting assembly and the discharging mechanism. The device effectively solves the technical problems of high labor intensity, high danger coefficient, poor mounting precision and long adjusting period of pin shaft dismounting and mounting during plate spring sorting in the prior art.

Description

Technical Field

[0001] The invention relates to the technical field of leaf spring production, and in particular to automatic leaf spring sorting equipment. Background Art

[0002] Leaf spring, also known as leaf spring or leaf spring, is an elastic element made up of several elastic steel plates stacked together. When it is subjected to external force, it will deform and store energy. When the external force disappears, it will return to its original shape and release the stored energy. This energy conversion makes it have good buffering and shock absorbing effects, and is used in various machinery, vehicles, ships, aerospace and other fields.

[0003] For example, a patent document with authorization announcement number CN107314071B discloses a composite leaf spring for automobiles, which includes a steel leaf spring sheet and at least one composite material spring sheet located below the steel leaf spring sheet. The steel leaf spring sheet and the composite material spring sheet are stacked up and down and connected as a whole by fasteners. A composite material spring sheet mounting pad is fixed to the bottom of the middle part of the lowest composite material spring sheet. The composite material spring sheet mounting pad adopts a steel groove-shaped part. The bottom and both sides of the lowest composite material spring sheet are provided with slots matching the composite material spring sheet mounting pad. The slots together form a U-shaped groove. The composite material spring sheet mounting pad is fixed in the U-shaped groove from bottom to top. When in use, most of the vibration is absorbed by the elasticity of the composite material spring sheet itself, and the steel leaf spring sheet is connected to the vehicle body and withstands a small amount of torsion and shear stress caused by steering and braking, thereby ensuring the overall strength.

[0004] It can be seen that the performance of leaf springs is of great significance to the safe driving of automobiles. At present, in the production process of leaf springs, in order to ensure the consistency of size and performance of finished leaf springs, the produced leaf springs need to be sorted. In the prior art, when sorting leaf springs, manual operation is required to realize the insertion and removal of the pins in the ear holes of the leaf springs, and the position of the pins needs to be adjusted manually to realize the reliable installation of the leaf springs on the sorting equipment and ensure the accuracy of the subsequent sorting results. The labor intensity of manual disassembly and assembly of the pins is large, the risk factor is high, and the adjustment accuracy is poor and the adjustment cycle is long, which greatly reduces the production efficiency of leaf springs. Summary of the invention

[0005] The invention provides an automatic leaf spring sorting device to solve the technical problems in the prior art of high labor intensity, high risk factor, poor installation accuracy and long adjustment cycle in disassembling and assembling pins during leaf spring sorting.

[0006] In order to solve the above problems, the automatic leaf spring sorting equipment provided by the present invention adopts the following technical solutions: An automatic leaf spring sorting device, comprising: The main body of the equipment has a feeding mechanism and a unloading mechanism respectively arranged on two opposite sides thereof. The main body of the equipment includes a workbench, on which a stepping conveying mechanism corresponding to the position of the feeding mechanism and having the same conveying direction is installed. The two opposite sides of the stepping conveying mechanism are installed with corresponding pin assemblies for respectively fixing the two ends of the leaf spring; A pin assembly is slidably mounted on the workbench, the pin assembly comprises a first pin assembly and a second pin assembly which are arranged opposite to each other, and a leaf spring mounting frame for mounting a leaf spring is arranged between the first pin assembly and the second pin assembly; A leaf spring positioning mechanism, which is arranged on a side of the equipment body facing the feeding mechanism and connected to the first pin assembly, and the leaf spring positioning mechanism includes a lifting mechanism with an output end facing upward, and a leaf spring mounting seat is installed at the end of the output end; A sorting component, which is installed on the main body of the equipment, and the sorting component includes a pressure mechanism, a load measuring mechanism, a displacement measuring mechanism and an automatic coding mechanism; A hydraulic and electric control system is connected with the feeding mechanism, the stepping conveying mechanism, the pinning assembly, the lifting mechanism, the sorting assembly and the unloading mechanism.

[0007] The beneficial effects of the automatic leaf spring sorting device provided by the present invention are: 1. By setting up a leaf spring positioning mechanism and connecting it with the hydraulic and electric control system, after the leaf spring is conveyed to the leaf spring mounting seat, the hydraulic and electric control system controls the lifting mechanism to lift the leaf spring, so as to adjust the height of the leaf spring and locate the position of the leaf spring; by installing a stepping conveying mechanism on the workbench, the position of the leaf spring is precisely controlled by utilizing the high-precision positioning characteristics of the stepping conveying mechanism, so that the ear hole of the leaf spring is concentric with the pin shaft of the first pin shaft assembly and the second pin shaft assembly, and it can be ensured that the leaf spring will not shift during the conveying process; 2. By setting up a pin assembly and connecting the pin assembly to the hydraulic and electronic control system, when in use, the parameter specifications of the leaf spring to be tested are input into the hydraulic and electronic control system, and then the hydraulic and electronic control system controls the pin assembly to automatically adjust the position. The position of the pin assembly can be adjusted quickly and accurately without human intervention. It has a high degree of automation and a fast adjustment speed, which greatly shortens the time for adjusting the pin position. After the leaf spring is placed on the leaf spring mounting frame, the pin insertion, detection and pin withdrawal work can be automatically completed under the control of the hydraulic and electronic control system, reducing the labor intensity and safety risks of workers.

[0008] Through the above arrangement, the present invention effectively solves the technical problems in the prior art of high labor intensity, high risk factor, poor installation accuracy and long adjustment cycle in disassembling and assembling pins during leaf spring sorting.

[0009] Further, the first pin shaft assembly includes a first pin shaft base, on which is mounted a first pin shaft mounting seat that can slide along the conveying direction of the stepping conveying mechanism, and on which is mounted a first horizontally extending first locating pin; the second pin shaft assembly includes a second pin shaft base, on which is mounted a second pin shaft mounting seat that can slide along the conveying direction of the stepping conveying mechanism, and on which is mounted a second horizontally extending second locating pin; the first locating pin and the second locating pin are arranged opposite to each other, and both extend toward the leaf spring mounting frame.

[0010] Furthermore, a first slide rail is installed on the workbench below the first pin shaft base and the second pin shaft base, the first slide rail extends in a direction perpendicular to the conveying direction of the stepping conveying mechanism, and the first pin shaft mounting seat and the second pin shaft mounting seat are slidably mounted on the first slide rail.

[0011] Beneficial effect: The first slide rail is installed on the workbench, and the first pin base and the second pin base are installed on the first slide rail, so that the positions of the first pin base and the second pin base can be flexibly adjusted along the direction of the first slide rail to adapt to leaf springs of different sizes.

[0012] Furthermore, the first pin shaft base and the second pin shaft base are connected to an adjustment motor, and the adjustment motor is connected to the hydraulic and electric control system to drive the first pin shaft base and the second pin shaft base to move under the control of the hydraulic and electric control system.

[0013] Furthermore, a buffer mechanism is slidably mounted on one end of the leaf spring mounting frame away from the stepping conveying mechanism.

[0014] Beneficial effect: By setting the buffer mechanism, the influence of the force in the X-axis (horizontal direction) on the sorting measurement result can be reduced, thereby improving the accuracy of the measurement.

[0015] Furthermore, the leaf spring mounting frame includes a support seat, on which a support plate is mounted.

[0016] Furthermore, the top surface of the support plate has a notch, and the extending direction of the notch is consistent with the extending direction of the positioning pin, so as to support and position the ear of the leaf spring.

[0017] Beneficial effect: The notch can provide guidance for the placement of the rolled ear to ensure that the rolled ear can be accurately placed at the predetermined position, reduce the error in the positioning process, make the installation of the positioning pin more accurate, and be able to position the rolled ear placed in the notch.

[0018] Furthermore, a detection switch is provided on the workbench beside the pin assembly, and the detection switch is used to detect whether the positioning pin is installed in the ear hole of the leaf spring.

[0019] Beneficial effect: The detection switch can quickly and accurately determine whether the positioning pin is successfully inserted into the ear hole of the leaf spring, and promptly discover the situation where the positioning pin is not installed in place or is installed incorrectly, which greatly shortens the production cycle and improves the efficiency of leaf spring sorting.

[0020] Furthermore, the lifting mechanism is a servo lifter or a variable frequency motor or a cylinder.

[0021] Furthermore, there are multiple pin assemblies, and the multiple pin assemblies are divided into two groups and arranged on two opposite sides of the conveying direction of the stepping conveying mechanism.

[0022] The beneficial effects of the automatic sorting equipment of leaf springs provided by the present invention are as follows: by setting a leaf spring positioning mechanism including a lifting mechanism and a leaf spring mounting seat, and connecting the lifting mechanism with a hydraulic and electric control system, when the leaf spring is transported to the leaf spring mounting seat, the hydraulic and electric control system controls the lifting mechanism to rise to adjust the installation height and position of the leaf spring, and the spring is transported by a stepping conveying mechanism to avoid displacement of the leaf spring during the conveying process, so that the ear hole of the leaf spring can be concentric with the pin shaft of the first pin shaft assembly and the second pin shaft assembly; by setting a pin-through assembly and connecting it with a hydraulic and electric control system, the position of the pin-through assembly can be adjusted by the hydraulic and electric control system, and the degree of automation and the accuracy of adjustment are greatly improved; by installing the first pin shaft base and the second pin shaft base on the first slide rail, the positions of the two can be flexibly adjusted to adapt to leaf springs of different sizes; by setting a detection switch to detect whether the positioning pin is installed in the ear hole of the leaf spring, it is possible to promptly detect that the positioning pin is not installed in place or is installed incorrectly, thereby improving the efficiency of leaf spring sorting. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] By reading the following detailed description with reference to the accompanying drawings, the above and other objects, features and advantages of the exemplary embodiments of the present invention will become readily understood. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein: Figure 1 This is a schematic diagram of the structure of the automatic leaf spring sorting equipment provided by the present invention; Figure 2 for Figure 1 A local enlarged schematic diagram of the middle A; Figure 3 A schematic diagram of the structure of the device body provided by the present invention; Figure 4 for Figure 3 A top view of the main body of the device shown; Figure 5 A schematic diagram of the structure of the stepping conveying mechanism provided by the present invention; Figure 6A schematic diagram of the structure of the clamping mechanism provided by the present invention; Figure 7 A schematic diagram of the structure of the leaf spring positioning mechanism and the pin assembly provided by the present invention; Figure 8 for Figure 7 A top view of the leaf spring positioning mechanism and the through pin assembly shown; Fig. 9 for Figure 7 A side view of the leaf spring positioning mechanism and through pin assembly is shown.

[0024] Description of reference numerals: 1. Workbench; 2. Stepping conveyor body; 3. Leaf spring mounting seat; 4. Hydraulic and electronic control system; 5. First pin shaft base; 6. First pin shaft mounting seat; 7. First positioning pin; 8. Second pin shaft base; 9. Second pin shaft mounting seat; 10. Second positioning pin; 11. First slide rail; 12. Adjustment motor; 13. Buffer mechanism; 14. Support seat; 15. Support plate; 16. Notch; 17. Servo lifter; 18. Mounting port; 19. Cylinder; 20. Protective plate; 21. Drive motor; 22. Clamping seat; 23. Clamping block; 24. Drive shaft; 25. Mechanism base; 26. Second slide rail; 27. Load measuring mechanism; 28. Displacement measuring mechanism. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0026] It should be noted that the main concept of the automatic sorting equipment for leaf springs provided by the present invention is: by setting a leaf spring height adjustment mechanism and connecting it to the hydraulic and electric control system 4, when the leaf spring is transmitted to the leaf spring mounting seat 3, the hydraulic and electric control system 4 drives the lifting mechanism to lift the leaf spring to adjust its height and position the leaf spring; a stepping conveying mechanism is provided on the workbench 1, which can ensure the smooth transportation of the leaf spring while realizing precise regulation of its position, so that the ear hole of the leaf spring is kept concentric with the pin shaft of the first pin shaft assembly and the second pin shaft assembly, and effectively prevent the leaf spring from shifting during the transportation process; by setting a pin threading assembly and connecting it to the hydraulic and electric control system 4, when in use, it is only necessary to input the parameter specifications of the leaf spring to be tested into the hydraulic and electric control system 4, and the system can automatically adjust the position of the pin threading assembly without manual intervention, with a high level of automation and rapid adjustment, which significantly shortens the time for adjusting the pin shaft position. In addition, when the leaf spring is placed on the leaf spring mounting frame, the system can automatically complete the pin threading, detection and pin extraction operations, effectively reducing the workload of the workers and reducing the safety risks in the operation.

[0027] After introducing the basic principle of the present invention, various non-limiting embodiments of the present invention are described in detail below. The number of any element in the drawings is for illustration and not for limitation, and any naming is only for distinction and does not have any limiting meaning.

[0028] The principle and spirit of the present invention are explained in detail below with reference to several representative embodiments of the present invention.

[0029] Embodiment 1 of the automatic leaf spring sorting device provided by the present invention: like Figures 1 to 9 As shown, the automatic sorting equipment for leaf springs includes a feeding mechanism (not shown in the figure), an equipment body, a stepping conveying mechanism, a pin assembly, a leaf spring positioning mechanism, a sorting assembly, a feeding mechanism (not shown in the figure) and a hydraulic and electric control system 4, wherein the pin assembly, the leaf spring positioning mechanism and the sorting assembly are all installed on the equipment body, the feeding mechanism and the feeding mechanism are respectively arranged on two opposite sides of the equipment body, and the hydraulic and electric control system 4 is connected to the feeding mechanism, the stepping conveying mechanism, the leaf spring positioning mechanism, the sorting assembly and the feeding mechanism through hydraulic pipelines (not shown in the figure) and cables (not shown in the figure).

[0030] About the main body of the equipment. The main body of the equipment includes a workbench 1, on which is installed a stepping conveying mechanism corresponding to the position of the feeding mechanism and in the same conveying direction, the stepping conveying mechanism includes a stepping conveying body 2 and a driving motor 21 installed on the stepping conveying body 2 for driving the stepping conveying body 2 to operate, the feeding mechanism is defined to convey from front to back, a leaf spring positioning mechanism is installed on the left side of the main body of the equipment, and a pre-pressing station and a sorting station are sequentially arranged on the workbench 1 along the conveying direction of the stepping conveying body 2.

[0031] About the through-pin assembly. There are four through-pin assemblies, which are divided into two groups. Two through-pin assemblies in each group are arranged on the left and right sides of the stepping conveying mechanism. The four through-pin assemblies on each side are evenly spaced in the conveying direction of the stepping conveying mechanism. The through-pin assembly includes a first pin assembly and a second pin assembly which are positioned opposite to each other. The first pin assembly and the second pin assembly are respectively used to fix the two ears of the leaf spring. A leaf spring mounting frame for mounting the leaf spring is arranged between the two pin assemblies.

[0032] Specifically, the first pin shaft assembly includes a first pin shaft base 5, on which is mounted a first pin shaft mounting seat 6 which can slide along the conveying direction of the stepping conveying mechanism, and on which is mounted a first positioning pin 7 which extends horizontally from front to rear. The second pin shaft assembly includes a second pin shaft base 8, on which is mounted a second pin shaft mounting seat 9 which can slide along the conveying direction of the stepping conveying mechanism, and on which is mounted a second positioning pin 10 which extends horizontally from rear to front.

[0033] Specifically, a first slide rail 11 is provided on the workbench 1 below the first pin shaft base 5 and the second pin shaft base 8. The first slide rail 11 extends left and right, and its extension direction is perpendicular to the conveying direction of the stepping conveying mechanism. The first pin shaft base 5 and the second pin shaft base 8 are slidably installed on the first slide rail 11.

[0034] Specifically, the first pin base 5 and the second pin base 8 are connected to an adjustment motor 12, and the adjustment motor 12 is connected to the hydraulic and electronic control system 4 to drive the first pin base 5 and the second pin base 8 to move under the control of the hydraulic and electronic control system 4, thereby driving the first pin assembly and the second pin assembly to move; the first pin mounting seat 6 and the second pin mounting seat 9 are both connected to the hydraulic and electronic control system 4 through hydraulic pipelines and cables.

[0035] About the leaf spring mounting frame. The leaf spring mounting frame comprises a support seat 14, on which a support plate 15 is mounted, and a top surface of the support plate 15 has a notch 16, which extends forward and backward to support and position the coiling lug.

[0036] Regarding the leaf spring positioning mechanism. There are two leaf spring positioning mechanisms, both of which are arranged on the front side of the equipment body and are respectively located on the left and right sides of the stepping conveying mechanism. The leaf spring positioning mechanism is connected to the first pin shaft assembly, which includes a lifting mechanism, the output end of the lifting mechanism is arranged upward, and a leaf spring mounting seat 3 is installed at its output end. The center position of the top surface of the leaf spring mounting seat 3 has a concave mounting port 18, and the mounting port 18 is used to support and position the winding ear. Under the control of the hydraulic and electronic control system 4, the leaf spring positioning mechanism can simultaneously adjust the height (i.e., Z axis) and horizontal position (i.e., X axis) of the leaf spring.

[0037] Specifically, the lifting mechanism is a servo lift 17 .

[0038] About the sorting component. The sorting component is arranged on the sorting station of the workbench 1, and includes a pressure mechanism connected to the hydraulic and electronic control system 4, a load measuring mechanism 27, a displacement measuring mechanism 28 and an automatic inkjet mechanism. The pressure mechanism is a cylinder 19, which is used to apply a load to the leaf spring under the control of the hydraulic and electronic control system 4; the load measuring mechanism 27 is used to measure the load applied to the leaf spring and transmit the measured data to the hydraulic and electronic control system 4; the displacement measuring mechanism 28 is used to measure the displacement of the leaf spring and transmit the measured data to the hydraulic and electronic control system 4, and the hydraulic and electronic control system 4 outputs the stiffness result according to the measured load and displacement data. The automatic inkjet mechanism is used to spray the measurement result on the leaf spring under the control of the hydraulic and electronic control system 4 after the arc height and stiffness measurement are completed.

[0039] In addition, a buffer mechanism 13 is slidably installed at one end of the leaf spring mounting frame away from the stepping conveying mechanism, so as to absorb and dissipate the impact energy when the leaf spring mounting frame moves outward; a detection switch is arranged on the workbench 1 beside the pin assembly, and the detection switch is used to detect whether the positioning pin is installed in the ear hole of the rolled ear, so as to send a signal to the hydraulic and electric control system 4 when it is detected that the positioning pin is not installed in the ear hole, and the hydraulic and electric control system 4 displays the alarm signal and the location of the fault in its display, and drives the alarm light connected thereto to alarm; protective plates 20 are arranged on the front and rear sides of the top of the equipment body; and the rear side of the equipment body is respectively installed on the left and right sides of the stepping conveying mechanism. There is a clamping mechanism, which is used to close the leaf spring clamp on the leaf spring. The clamping mechanism includes a mechanism base 25, and a second slide rail 26 is installed on the top surface of the mechanism base 25. A clamping seat 22 is slidably installed on the second slide rail 26. A horizontally extending drive shaft 24 is installed at the end of the clamping seat 22 that is away from the second pin shaft mounting seat 9. The output end of the drive shaft 24 is arranged toward the second pin shaft mounting seat 9. A clamping block 23 is arranged at the end of the drive shaft 24. The drive shaft 24 is connected to the hydraulic and electronic control system 4 to push the clamping block 23 toward the second pin shaft mounting seat 9 under the control of the hydraulic and electronic control system 4, so that the plate clamp set on the leaf spring is clamped to fix the leaf spring.

[0040] The working principle of the automatic leaf spring sorting equipment provided by the present invention is: First, the feeding mechanism conveys the leaf spring to the installation position of the stepping conveying mechanism close to the feeding mechanism, and then the hydraulic and electric control system 4 drives the stepping conveying mechanism to drive the leaf spring to move backward and fall into the installation opening 18 of the leaf spring mounting seat 3 to complete the preliminary positioning of the leaf spring position; Then, the hydraulic and electric control system 4 controls the servo lifter 17 to lift the leaf spring mounting seat 3 and the leaf spring to adjust the height of the leaf spring. After the height adjustment of the leaf spring is completed, the hydraulic and electric control system 4 drives the stepping conveying mechanism to continue conveying the leaf spring to the top of the support plate 15 and move downward so that the leaf spring is placed in the notch 16 on the support plate 15, thereby realizing secondary positioning of the leaf spring. Next, the hydraulic and electronic control system 4 controls the first pin shaft mounting seat 6 and the second pin shaft mounting seat 9 to approach each other, so as to drive the first positioning pin 7 and the second positioning pin 10 to approach each other until they are inserted into the ear hole. Subsequently, the leaf spring is first placed on the pre-stressing station for pre-stressing. After the pre-stressing is completed, the stepping conveying body 2 conveys it to the sorting station, and then the load measuring mechanism 27 and the displacement measuring mechanism 28 are used to perform load detection and displacement detection on the leaf spring. During the detection process, the first pin shaft base 5 and the second pin shaft base 8 move outward with the downward pressure of the leaf spring and move inward with the recovery of the leaf spring under the control of the hydraulic and electronic control system 4. After the detection is completed, the detected data is transmitted to the hydraulic and electronic control system 4. After that, the hydraulic and electronic control system 4 analyzes, organizes and calculates the detected data to obtain the required values, and draws the required curves, and then transmits the final detection results to the automatic coding mechanism, which sprays the detection results on the surface of the leaf spring. Finally, the stepping conveying mechanism conveys the inspected leaf springs to the unloading mechanism. At the same time, the uninspected leaf springs continue to move under the drive of the stepping conveying mechanism, and a new round of inspection can be started. By repeating the above steps, the leaf springs can be automatically sorted continuously.

[0041] Embodiment 2 of the automatic leaf spring sorting device provided by the present invention: The main difference between it and Example 1 is: In Example 1, the number of the pin assemblies is four, and the four pin assemblies are divided into two groups, with two pin assemblies in each group being arranged on the left and right sides of the stepping conveying mechanism.

[0042] In this embodiment, the number of the pin assemblies is an even number, and the even number of the pin assemblies are divided into two groups and arranged on the left and right sides of the stepping conveying mechanism.

[0043] Embodiment 3 of the automatic leaf spring sorting device provided by the present invention: The main difference between it and Example 1 is: In embodiment 1, the lifting mechanism is a servo lift.

[0044] In this embodiment, the lifting mechanism is a variable frequency motor or a cylinder.

[0045] According to the above description of this specification, those skilled in the art may also understand that the terms used below, such as "up", "down", "front", "back", "left", "right", "width", "horizontal", "top", "bottom", "inside", "outside" and the like, which indicate orientation or positional relationships, are based on the orientation or positional relationships shown in the drawings of this specification, and are only for the purpose of facilitating the explanation of the scheme of the present invention and simplifying the description, rather than explicitly or implicitly indicating that the devices or elements involved must have the specific orientation, be constructed and operated in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms cannot be understood or interpreted as limitations on the scheme of the present invention.

[0046] In addition, in the description of this specification, “plurality” means at least two, for example, two, three or more, etc., unless otherwise clearly and specifically defined.

Claims

1. An automatic leaf spring sorting device, characterized in that: include: The main body of the equipment has a feeding mechanism and a unloading mechanism respectively arranged on two opposite sides thereof. The main body of the equipment includes a workbench, on which a stepping conveying mechanism corresponding to the position of the feeding mechanism and having the same conveying direction is installed. The two opposite sides of the stepping conveying mechanism are installed with corresponding pin assemblies for respectively fixing the two ends of the leaf spring; A pin assembly is slidably mounted on the workbench, the pin assembly comprises a first pin assembly and a second pin assembly which are arranged opposite to each other, and a leaf spring mounting frame for mounting a leaf spring is arranged between the first pin assembly and the second pin assembly; A leaf spring positioning mechanism, which is arranged on a side of the equipment body facing the feeding mechanism and connected to the first pin assembly, and the leaf spring positioning mechanism includes a lifting mechanism with an output end facing upward, and a leaf spring mounting seat is installed at the end of the output end; A sorting component, which is installed on the main body of the equipment, and the sorting component includes a pressure mechanism, a load measuring mechanism, a displacement measuring mechanism and an automatic coding mechanism; A hydraulic and electric control system is connected with the feeding mechanism, the stepping conveying mechanism, the pinning assembly, the lifting mechanism, the sorting assembly and the unloading mechanism.

2. The automatic leaf spring sorting device according to claim 1, characterized in that: The first pin shaft assembly includes a first pin shaft base, on which a first pin shaft mounting seat that can slide along the conveying direction of the stepping conveying mechanism is installed, and a first horizontally extending first positioning pin is installed on the first pin shaft mounting seat. The second pin shaft assembly includes a second pin shaft base, on which a second pin shaft mounting seat that can slide along the conveying direction of the stepping conveying mechanism is installed, and a second horizontally extending second positioning pin is installed on the second pin shaft mounting seat. The first positioning pin and the second positioning pin are arranged opposite to each other, and both extend toward the leaf spring mounting frame.

3. The automatic leaf spring sorting device according to claim 2, characterized in that: A first slide rail is installed on the workbench below the first pin shaft base and the second pin shaft base. The first slide rail extends in a direction perpendicular to the conveying direction of the stepping conveying mechanism. The first pin shaft mounting seat and the second pin shaft mounting seat are slidably mounted on the first slide rail.

4. The automatic leaf spring sorting device according to claim 3, characterized in that: The first pin shaft base and the second pin shaft base are connected with an adjustment motor, and the adjustment motor is connected to the hydraulic and electric control system to drive the first pin shaft base and the second pin shaft base to move under the control of the hydraulic and electric control system.

5. The automatic leaf spring sorting device according to claim 3 or 4, characterized in that: A buffer mechanism is slidably mounted on one end of the leaf spring mounting frame away from the stepping conveying mechanism.

6. The automatic leaf spring sorting device according to any one of claims 1 to 4, characterized in that: The leaf spring mounting frame comprises a supporting seat, on which a supporting plate is mounted.

7. The automatic leaf spring sorting device according to claim 6, characterized in that: The top surface of the support plate is provided with a notch, the extension direction of the notch is consistent with the extension direction of the positioning pin, so as to support and position the coil ear of the leaf spring.

8. The automatic leaf spring sorting device according to any one of claims 1 to 4, characterized in that: The workbench is also provided with a detection switch beside the pin assembly, and the detection switch is used to detect whether the positioning pin is inserted into the ear hole of the leaf spring.

9. The automatic leaf spring sorting device according to any one of claims 1 to 4, characterized in that: The lifting mechanism is a servo lifter or a variable frequency motor or an oil cylinder.

10. The automatic leaf spring sorting device according to any one of claims 1 to 4, characterized in that: There are multiple pin assemblies, and the multiple pin assemblies are divided into two groups and arranged on two opposite sides of the conveying direction of the stepping conveying mechanism.

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