Spring assembly machine

Abstract

The present invention relates to a spring assembly machine for assembling valve parts, including a clamping assembly, a rotating assembly and a driving assembly. The valve parts are installed on the clamping assembly. The rotating assembly includes a shell and a base. A rotating needle is arranged on the base. The rotating needle is used to connect with the screw of the valve parts. The driving assembly is connected with the shell and drives the shell to rotate around its own axis. The base is inserted into the shell, and the base can slide along the axis direction of the shell. A spring is arranged at one end of the base away from the rotating needle so that the rotating needle is elastically connected with the screw. The shell can drive the base to rotate so that the rotating needle drives the screw to rotate relative to the nut sleeved on the screw. By setting the rotating assembly, a spring is arranged at one end of the base of the rotating assembly away from the rotating needle, and the rotating needle is elastically connected with the screw through the spring. When installing the valve parts, it is not necessary to plug the screw and the rotating needle into place. During the rotation of the rotating needle, it can automatically plug and cooperate with the screw under the action of elastic force, which is conducive to improving the efficiency of the assembly operation.

Description

Technical Field

[0001] The invention relates to the technical field of valve manufacturing, and in particular to a spring assembly machine. Background Art

[0002] In the manufacturing process of automobile pipeline valves, the manufacturing quality of valve parts is related to the normal operation of automobile pipelines. Therefore, the manufacturing quality requirements of valve parts are relatively high. For example, some automobile air pipe valves or oil pipe valves are provided with a valve core for closing or opening the opening. The valve core is elastically installed on the valve through a spring, and the valve core is in a closed state by the preload force of the spring. When the pressure on the valve core exceeds the preload force under the action of air pressure or oil pressure, the valve core can be opened to achieve pressure relief. In order to ensure the safe and reliable operation of the valve core, the spring must be compressed to an appropriate length when manufacturing the valve parts so that the spring generates a preload force that meets the design requirements. In the existing assembly process, the assembly machine is used to clamp the screw and nut of the valve part respectively, and the spring sleeved on the screw is compressed by screwing the nut. However, it takes a long time to install the valve parts on the assembly machine, which makes it difficult to improve the efficiency of the assembly work. Summary of the invention

[0003] The object of the present invention is to provide a spring assembly machine, which is convenient for the installation of valve parts and has high assembly efficiency.

[0004] To achieve this object, the present invention adopts the following technical solutions:

[0005] A spring assembly machine is provided for assembling valve parts, comprising a clamping assembly, a rotating assembly and a driving assembly, wherein the valve part is mounted on the clamping assembly, the rotating assembly comprises a shell and a base, a rotating needle is provided on the base, the rotating needle is used to connect with the screw of the valve part, the driving assembly is connected with the shell and drives the shell to rotate around its own axis, the base is penetrated into the shell, and the base can slide along the axis direction of the shell, a spring is provided at one end of the base away from the rotating needle so that the rotating needle is elastically connected to the screw, and the shell can drive the base to rotate so that the rotating needle drives the screw to rotate relative to a nut sleeved on the screw.

[0006] Furthermore, the rotating pin is a hexagonal rotating pin, and one end of the screw rod is provided with a hexagonal groove matching with the hexagonal rotating pin, and the hexagonal rotating pin is used to be plugged into the hexagonal groove and drive the screw rod to rotate.

[0007] Furthermore, the inner wall of the shell is provided with a guide groove, the outer wall of the base is provided with a boss that cooperates with the guide groove, the boss is plugged into the guide groove, and the boss can slide along the length direction of the guide groove.

[0008] Furthermore, there are a plurality of guide grooves, and the plurality of guide grooves are spaced apart and distributed along the circumferential direction of the shell.

[0009] Furthermore, the driving assembly includes a driving motor, a rotating wheel and a connecting shaft, the driving motor is transmission-connected to the rotating wheel, the driving motor is used to drive the rotating wheel to rotate, one end of the connecting shaft is coaxially fixed to the rotating wheel, and the other end of the connecting shaft is connected to the housing.

[0010] Furthermore, the driving assembly also includes a transmission belt, and the transmission belt is sleeved on the rotating wheel and the output shaft of the driving motor, so that the driving motor drives the rotating wheel to rotate through the transmission belt.

[0011] Furthermore, the rotating needle is detachably connected to the base.

[0012] Furthermore, the shell includes an outer shell and an inner shell penetrating the outer shell, the inner shell is connected to the driving assembly so that the inner shell can rotate relative to the outer shell, and the base is connected to the inner shell.

[0013] Furthermore, the inner shell has a receiving groove, the base is installed in the receiving groove, the base is spaced from the bottom of the receiving groove, and the two ends of the spring are respectively connected to the base and the bottom of the groove.

[0014] Furthermore, a sensor is included, and the sensor is used to detect the preload force of the spring on the valve member.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The spring assembly machine of the present invention is provided with a rotating assembly, and a spring is provided at one end of the base of the rotating assembly away from the rotating needle, so that the rotating needle is elastically connected to the screw rod. When installing the valve part, it is not necessary to plug the screw rod and the rotating needle into place. During the rotation of the rotating needle, the rotating needle can automatically plug and cooperate with the screw rod under the action of elastic force, which is conducive to improving the assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of a spring assembly machine according to an embodiment.

[0018] Figure 2 It is a partial cross-sectional view of the spring assembly machine of the embodiment.

[0019] In the figure:

[0020] 1. Clamping assembly; 10. Mounting groove; 2. Rotating assembly; 20. Accommodating groove; 21. Inner shell; 211. Guide groove; 22. Outer shell; 23. Base; 24. Turning needle; 25. Spring; 26. First bearing; 27. Second bearing; 3. Driving assembly; 31. Driving motor; 32. Rotating wheel; 33. Connecting shaft; 4. Frame; 41. Workbench. DETAILED DESCRIPTION

[0021] In order to make the technical problem solved by the present invention, the technical solution adopted and the technical effect achieved more clearly, the technical solution of the present invention is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0022] like Figure 1 and Figure 2As shown, a spring assembly machine provided by the present invention is used for assembling valve parts, specifically assembling nuts, screws and springs inserted on the screws of valve parts, and compressing the springs so that the springs produce a certain preload force, and the valve core is elastically installed on the valve parts through the springs. The spring assembly machine includes a clamping assembly 1, a rotating assembly 2 and a driving assembly 3. The valve parts are installed on the clamping assembly 1. The rotating assembly 2 includes a housing and a base 23. A rotating pin 24 is arranged on the base 23. The rotating pin 24 is used to connect with the screw of the valve parts. The driving assembly 3 is connected to the housing and drives the housing to rotate around its own axis. The base 23 is inserted in the housing, and the base 23 can slide along the axis direction of the housing. A spring 25 is arranged at one end of the base 23 away from the rotating pin 24, so that the rotating pin 24 is elastically connected with the screw. The housing can drive the base 23 to rotate, so that the rotating pin 24 drives the screw to rotate relative to the nut sleeved on the screw. In this embodiment, the function of the clamping assembly 1 is to fix and install the valve parts, and clamp the nuts on the valve parts through the clamping assembly 1. The clamping assembly 1 is provided with a mounting groove 10, and the valve member is inserted into the mounting groove 10. The function of the rotating assembly 2 is to connect with the screw on the valve member to drive the screw to rotate around its own axis, thereby realizing the relative rotation of the screw and the nut. The screw and the nut are threadedly connected, and the spring inserted on the screw is compressed, so that the spring has a certain preload force. The function of the driving assembly 3 is to output power to rotate the rotating assembly 2. The rotating assembly 2 includes a housing, a base 23, a rotating needle 24 and a spring 25. The rotating needle 24 is used to be plugged with the screw and drive the screw and the rotating needle 24 to rotate synchronously. The base 23 is used to install the rotating needle 24. The base 23 can slide along the axis direction of the housing, and the base 23 and the housing are elastically connected through the spring 25, that is, the rotating needle 24 and the housing are also elastically connected. The housing, the base 23, the rotating needle 24 and the screw are all rotating body mechanisms, and the four are coaxially arranged. During the assembly process, the valve component is installed on the clamping assembly 1 and is clamped and fixed by the clamping structure located above the clamping assembly 1. The screw of the valve component is arranged in the vertical direction, and the lower end of the screw has a groove that matches the rotating pin 24, and the groove is used to insert the rotating pin 24. After the screw is connected with the rotating pin 24, the spring 25 is compressed, and the rotating pin 24 and the screw are elastically connected by the elastic force of the spring 25. When installing the valve component, the operator does not need to align the position of the screw groove and the rotating pin 24 on the horizontal plane. For example, when the rotating pin 24 is installed, the rotating pin 24 is not inserted into the screw groove. When the rotating pin 24 rotates, the rotating pin 24 can automatically move upward and plug and match with the screw under the elastic force of the spring 25. Then the rotating pin 24 drives the screw to rotate. This structure reduces the installation accuracy of the valve component on the clamping assembly 1 during the assembly process, which is conducive to improving the working efficiency.

[0023] Specifically, the rotating pin 24 is a hexagonal rotating pin, and one end of the screw is provided with a hexagonal groove that matches the hexagonal rotating pin, and the hexagonal rotating pin is used to be plugged into the hexagonal groove and drive the screw to rotate. It can be understood that the hexagonal rotating pin has a regular hexagonal cross section, and the hexagonal rotating pin is inserted into the hexagonal groove so that the rotating pin 24 rotates synchronously with the screw. Since the sizes of the hexagonal grooves corresponding to different valve parts are different, a rotating pin 24 of appropriate specifications is selected to match the screw when used. The rotating pin 24 is detachably connected to the base 23 to facilitate the replacement of the rotating pin 24. Optionally, a socket for inserting the rotating pin 24 is provided on the base 23, and the rotating pin 24 is plugged and fixed to the base 23.

[0024] In this embodiment, the spring assembly machine further includes a frame 4, and the clamping assembly 1, the rotating assembly 2 and the driving assembly 3 are all mounted on the frame 4. The frame 4 includes a workbench 41, the workbench 41 is horizontally arranged, the clamping assembly 1 is mounted on the upper side of the workbench 41, the rotating assembly 2 is mounted on the lower side of the workbench 41, and the rotating needle 24 passes through the workbench 41 and extends to the upper side, so that the rotating needle 24 can be connected to the valve member fixed on the clamping assembly 1.

[0025] Specifically, the housing includes an inner housing 21 and an outer housing 22. The inner housing 21 is inserted into the outer housing 22. The inner housing 21 is connected to the driving assembly 3 so that the inner housing 21 can rotate relative to the outer housing 22. The base 23 is connected to the inner housing 21. In this embodiment, the outer housing 22 is fixed to the lower side of the workbench 41. The driving assembly 3 drives the inner housing 21 to rotate around its own axis. The base 23 is installed on the inner housing 21, and the inner housing 21 drives the base 23 to rotate, thereby driving the rotating needle 24 to rotate. This structure can provide mechanical protection for the inner housing 21 and the base 23 through the outer housing 22, while preventing the rotating parts from being exposed and causing mechanical damage to the operator.

[0026] Specifically, refer to Figure 2 As shown, the inner housing 21 has a receiving groove 20, the base 23 is installed in the receiving groove 20, the base 23 is spaced from the groove bottom of the receiving groove 20, and the two ends of the spring 25 are respectively connected to the base 23 and the groove bottom of the receiving groove 20. The receiving groove 20 is used to install the base 23 and the spring 25, the base 23 is inserted in the receiving groove 20, and can slide along the length direction of the receiving groove 20. The spring 25 is located between the base 23 and the groove bottom, and the spring 25 provides an upward elastic force to the base 23 and the rotating needle 24.

[0027] In order to realize the rotation of the base 23 driven by the shell, a guide groove 211 is provided on the inner wall of the shell, and a boss matched with the guide groove 211 is provided on the outer wall of the base 23. The boss is plugged into the guide groove 211, and the boss can slide along the length direction of the guide groove 211. In this embodiment, the guide groove 211 is provided on the inner shell 21. The length direction of the guide groove 211 is parallel to the axial direction of the shell, and the boss is plugged into the guide groove 211, so that the base 23 can slide along the axial direction of the shell, and the inner shell 21 can drive the base 23 to rotate synchronously when the inner shell 21 rotates.

[0028] Specifically, there are multiple guide grooves 211, and the multiple guide grooves 211 are spaced apart along the circumferential direction of the shell. It can be understood that multiple guide grooves 211 are provided, and the number of bosses corresponds to the number of guide grooves 211. The multiple guide grooves 211 are evenly spaced apart along the groove wall of the receiving groove 20, which is conducive to making the circumference of the base 23 evenly stressed.

[0029] Specifically, the driving assembly 3 includes a driving motor 31, a rotating wheel 32 and a connecting shaft 33. The driving motor 31 is connected to the rotating wheel 32 in a transmission manner. The driving motor 31 is used to drive the rotating wheel 32 to rotate. One end of the connecting shaft 33 is coaxially fixed with the rotating wheel 32, and the other end of the connecting shaft 33 is connected to the housing. In this embodiment, the first bearing 26 and the second bearing 27 are also included. The first bearing 26 is a rolling bearing, and the second bearing 27 is a linear bearing. Both bearings are used to install the connecting shaft 33. The rotating wheel 32 and the connecting shaft 33 are located below the housing, and one end of the connecting shaft 33 away from the rotating wheel 32 is connected to the inner housing 21, so that the driving assembly 3 drives the inner housing 21 to rotate.

[0030] Specifically, the driving assembly 3 further includes a transmission belt, which is sleeved on the rotating wheel 32 and the output shaft of the driving motor 31, so that the driving motor 31 drives the rotating wheel 32 to rotate through the transmission belt. Of course, in other embodiments, the rotating wheel 32 can also be driven to rotate by other transmission methods, such as chain transmission, gear transmission, etc. In this embodiment, a driving wheel is provided on the output shaft of the driving motor 31, and the two ends of the transmission belt are respectively sleeved on the driving wheel and the rotating wheel 32, so as to realize the transmission connection between the driving motor 31 and the rotating wheel 32.

[0031] Specifically, the spring assembly machine also includes a sensor, which is used to detect the preload force of the spring on the valve component. It is understandable that the spring on the valve component is compressed by a nut so that the spring applies elastic force to the valve core of the valve component. The preload force of the spring must meet the design requirements. The preload force of the spring is detected by the sensor, and the spring assembly machine can adjust the compression degree of the spring according to the detection result of the sensor. Optionally, the spring assembly machine also includes a controller, and the sensor and the drive motor 31 are both connected to the controller. The sensor is a torque sensor, and the torque sensor is connected to the output shaft of the drive motor 31, so that the torque sensor monitors the torque output of the drive motor 31 until the set value is reached, and the controller controls the drive motor 31 to stop.

[0032] The significant effect of this embodiment is that by providing the rotating assembly 2, a spring 25 is provided at one end of the base 23 of the rotating assembly 2 away from the rotating needle 24, and the rotating needle 24 is elastically connected to the screw rod through the spring 25. When installing the valve component, it is not necessary to plug the screw rod and the rotating needle 24 into place. During the rotation of the rotating needle 24, the rotating needle 24 can automatically plug and cooperate with the screw rod under the action of elastic force, which is conducive to improving the assembly efficiency.

[0033] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The content of this specification should not be understood as limiting the present invention.

Claims

1. A spring assembly machine, used for assembling valve parts, specifically assembling nuts, screws and springs on the screws of the valve parts, and compressing the springs to generate a certain preload force, so that the valve core is elastically mounted on the valve parts through the springs, characterized in that: The spring assembly machine includes a clamping assembly, a rotating assembly and a driving assembly. The valve member is mounted on the clamping assembly. The rotating assembly includes a shell and a base. A rotating needle is provided on the base. The rotating needle is used to connect with the screw of the valve member. The driving assembly is connected with the shell and drives the shell to rotate around its own axis. The base is inserted into the shell and can slide along the axis direction of the shell. A spring is provided at one end of the base away from the rotating needle so that the rotating needle is elastically connected with the screw. The shell can drive the base to rotate so that the rotating needle drives the screw to rotate relative to the nut sleeved on the screw. When the rotating needle rotates, the rotating needle can automatically move upward and be plugged into and matched with the screw under the elastic force of the spring. The spring assembly machine further comprises a sensor, wherein the sensor is used to detect the preload force of the spring on the valve member; The rotating pin is a hexagonal rotating pin, and one end of the screw rod is provided with a hexagonal groove matched with the hexagonal rotating pin. The hexagonal rotating pin is used to be plugged into the hexagonal groove and drive the screw rod to rotate.

2. The spring assembly machine according to claim 1, characterized in that: The inner wall of the shell is provided with a guide groove, the outer wall of the base is provided with a boss matched with the guide groove, the boss is plugged into the guide groove, and the boss can slide along the length direction of the guide groove.

3. The spring assembly machine according to claim 2, characterized in that: There are a plurality of guide grooves, and the plurality of guide grooves are distributed at intervals along the circumferential direction of the shell.

4. The spring assembly machine according to claim 1, characterized in that: The driving assembly includes a driving motor, a rotating wheel and a connecting shaft. The driving motor is transmission-connected to the rotating wheel and is used to drive the rotating wheel to rotate. One end of the connecting shaft is coaxially fixed to the rotating wheel, and the other end of the connecting shaft is connected to the housing.

5. The spring assembly machine according to claim 4, characterized in that: The driving assembly further comprises a transmission belt, and the transmission belt is sleeved on the rotating wheel and the output shaft of the driving motor, so that the driving motor drives the rotating wheel to rotate through the transmission belt.

6. The spring assembly machine according to claim 1, characterized in that: The rotating needle is detachably connected to the base.

7. The spring assembly machine according to claim 1, characterized in that: The housing comprises an outer shell and an inner shell penetrating the outer shell, the inner shell is connected to the driving assembly so that the inner shell can rotate relative to the outer shell, and the base is connected to the inner shell.

8. The spring assembly machine according to claim 7, characterized in that: The inner shell has a receiving groove, the base is installed in the receiving groove, the base is spaced apart from the groove bottom of the receiving groove, and two ends of the spring are respectively connected to the base and the groove bottom.

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