A kind of gas pressure rod detection and assembly equipment and method

Abstract

The present invention discloses a pneumatic rod detection and assembly device and method, belonging to the field of pneumatic rod detection and assembly technology. It includes a supporting mechanism, an electrical control mechanism, a feeding mechanism, a pressure detection mechanism, a switch shaft mounting mechanism, and a lettering and buffer pad mounting mechanism. The supporting mechanism includes a supporting frame. The electrical control mechanism is electrically connected to the feeding mechanism, the pressure detection mechanism, the switch shaft mounting mechanism, the lettering and buffer pad mounting mechanism respectively. The feeding mechanism, the pressure detection mechanism, the switch shaft mounting mechanism, and the lettering and buffer pad mounting mechanism are placed on the supporting frame in sequence. The feeding mechanism is used to realize the transportation of materials between multiple workstations, and the spatial distance between different workstations is overcome. The pressure detection mechanism, the switch shaft mounting mechanism, and the lettering and buffer pad mounting mechanism respectively realize different processes of the pneumatic rod, in order to reduce the participation of labor and the control of mechanical equipment, and reduce labor costs.

Description

Technical Field

[0001] The present invention belongs to the technical field of gas pressure rod detection and assembly, and more specifically, relates to a gas pressure rod detection and assembly device and method. Background Art

[0002] Gas springs, also known as gas springs or cylinders, are mechanical parts that can realize functions such as support, cushioning, braking, height and angle adjustment. They are widely used in industries such as medical treatment, automobile manufacturing, and furniture production; in the existing mechanical parts manufacturing industry.

[0003] The structure of the related gas pressure rod includes the Chinese patent application number: 201510959993.X, the application date: 2015.12.21 "Fully rigid arbitrary position locking gas spring", which includes an outer tube, an oil pipe, a piston rod body and a push rod. The oil pipe is placed in the outer tube, the piston rod body is placed in the oil pipe, the push rod is placed in the piston rod body, the top of the outer tube is provided with a rear plug one, the top of the oil pipe is provided with a rear plug two, the outer tube is provided with an air cavity, the oil pipe is provided with an oil cavity, the air cavity and the oil cavity are separated by an oil seal and a piston, the oil seal is placed in the outer tube and located at the bottom of the oil pipe, the piston is placed in the outer tube and located on both sides of the oil pipe, and a rear top sleeve is also provided at the bottom of the outer tube. There is another Chinese patent application number: 201710426082.X, application date: 2017.06.08 "pressure adjustable gas spring", which includes: an outer cylinder with openings at both ends; an inner cylinder located in the outer cylinder and with openings at both ends, and a floating isolation piston is provided between the inner cylinder and the outer cylinder; a first piston is provided at one end of the piston rod and is located in the inner cylinder; one end of the valve body is located in the outer cylinder and is provided with a first sealing component, and the other end of the valve body is located in the inner cylinder and is provided with a second sealing component; one end of the control component blocks the second hole under the pressure of the liquid medium; the valve body is a valve body that can move along the axial direction of the outer cylinder and the inner cylinder; an adjusting component that can make the valve body move along the axial direction of the outer cylinder and the inner cylinder, one end of the adjusting component passes through the second plug and abuts against the valve body, the other end of the adjusting component is exposed to the air, and a through hole is provided on the adjusting component, and one end of the control component passes through the second hole on the valve body and the through hole on the adjusting component in sequence and is exposed to the air. After the internal parts of the gas pressure rod are assembled, the gas spring needs to be inflated and tested before the switch shaft and other parts are installed. The assembly and testing of the gas pressure rod is generally done manually in traditional processes. However, manual assembly and testing of the gas pressure rod requires a lot of manpower and is not efficient. On the other hand, the specifications of the obtained gas pressure rods are not uniform, product quality often has problems, and the qualified rate is low.

[0004] The structure of the switch shaft is disclosed in a patent. The Chinese patent application number is 201610610554.2 and the application date is 2016.07.29, which is a "switch shaft of a pneumatic rod". It includes an external leakage button, an elastic hook, an ejector column, a reinforcing rib and a shaft. The external leakage button is connected to the front end of the shaft, and an elastic hook is provided at the rear end of the shaft. The rear end of the shaft is connected to the ejector column, and the reinforcing rib is connected between the elastic hook and the ejector column. The switch shaft is installed on the pneumatic rod, and the switch shaft is used to complete the switch work of the pneumatic rod. In the prior art, the installation of the switch shaft is carried out manually, which is time-consuming and labor-intensive, and has low production efficiency. In the process of mass production, it is restricted by human capital. After the assembly of the internal parts of the pneumatic rod is completed, the pneumatic rod needs to be inflated and tested, and other parts need to be installed. The overall continuity of the work is poor, and it is difficult to use machines for industrial production.

[0005] The Chinese patent application number is 201811403137.6, and the application date is 2018.11.23, which is a "gas spring assembly machine". It discloses a gas spring assembly machine, which specifically includes a servo motor, a discharge port, a piston rod loading platform, an oil seal loading plate, a spacer loading plate, a piston loading plate, a gasket loading plate, a first pneumatic riveting loading plate, an O-ring loading plate, a second pneumatic riveting loading plate, a dividing plate, a side plate, a workbench and a support frame. By setting up a dividing plate, the entire gas spring assembly process can be carried out in the dividing plate; the dividing plate has high precision, and the gas spring product obtained after the assembly is completed by accurately positioning each feeding port improves the performance of the gas spring; however, the machine does not involve the detection part of the gas spring, and how to detect the gas spring cannot be found from the patent disclosure text, and there is no mention of the installation of other components such as the switch shaft after the gas spring completes the assembly of the internal parts.

[0006] Regarding the inflation detection of the gas pressure rod, there is a Chinese patent application number: 201320889886.0, and the application date is: 2013.12.31 "Gas spring automatic inflation force measuring machine" for recording, which includes a frame, an electric cabinet and a hydraulic station, a material rack is provided on one side of the frame, a material bin is provided on the other side of the frame, and also includes an inflation mechanism and a force measuring mechanism located on the frame, and adjustment slides are provided between the inflation mechanism and the material rack, between the inflation mechanism and the force measuring mechanism, and between the force measuring mechanism and the material bin. The inflation mechanism is provided with an inflation head, an inflation tail valve opening cylinder, and an inflation push cylinder located above the inflation head, and the force measuring mechanism includes a force measuring guide rail, a force measuring tail valve opening cylinder, and a force measuring sensor located on the force measuring guide rail. The above machine can realize the inflation force measuring process of the gas spring; but the whole process can only realize the inflation force measuring of the gas spring, which cannot effectively save labor and is not conducive to industrial production. Summary of the invention

[0007] 1. Problem to be solved

[0008] In view of the problem that it is difficult to mechanize the detection and assembly of the existing pneumatic rod after the internal parts are assembled, the present invention provides a pneumatic rod detection and assembly equipment; a feeding mechanism is used to realize the transportation of materials between multiple workstations, overcoming the spatial distance between different workstations; a pressure detection mechanism, a switch shaft installation mechanism, and an engraving and buffer pad installation mechanism respectively realize different processes of the pneumatic rod, in order to reduce manual participation and control of mechanical equipment, thereby reducing labor costs.

[0009] Another object of the present invention is to propose a method for detecting and assembling a pneumatic rod, which uses pneumatic pressure detection and assembly equipment to complete the pneumatic pressure detection of the pneumatic rod, the installation of the switch shaft and the buffer pad, and the engraving on the surface of the pneumatic rod. The overall equipment is connected into one, the detection and assembly method is simple, and no manual participation is required. After use, the production efficiency is greatly improved.

[0010] 2. Technical solution

[0011] In order to solve the above problems, the technical solution adopted by the present invention is as follows:

[0012] A pneumatic rod detection and assembly device of the present invention comprises a supporting mechanism, an electrical control mechanism, a feeding mechanism, a pressure detection mechanism, a switch shaft mounting mechanism and a lettering and buffer pad mounting mechanism, wherein the supporting mechanism comprises a supporting frame, and the electrical control mechanism is electrically connected to the feeding mechanism, the pressure detection mechanism, the switch shaft mounting mechanism, the lettering and buffer pad mounting mechanism, respectively, and the feeding mechanism, the pressure detection mechanism, the switch shaft mounting mechanism and the lettering and buffer pad mounting mechanism are placed on the supporting frame in sequence.

[0013] As a further improvement of the present invention, the electrical control mechanism includes a display and a PLC controller, the display is electrically connected to the PLC controller, and the PLC controller is electrically connected to the feeding mechanism, the pressure detection mechanism, the switch shaft installation mechanism, the engraving and buffer pad installation mechanism respectively.

[0014] As a further improvement of the present invention, the feeding mechanism includes a storage box, a feeding platform, a feeding cassette and a conveyor belt. The storage box, the feeding platform, the feeding cassette and the conveyor belt are connected in sequence and placed on a support frame. "L"-shaped card plates are evenly distributed on the feeding cassette.

[0015] As a further improvement of the present invention, a bottom plate is provided at the bottom end of the storage box, a lifting rod is provided on the upper side of the bottom plate, a lifting cylinder is provided on the lower side of the bottom plate, and the lifting rod is connected to the lifting cylinder; the angle between the bottom plate and the horizontal plane is α, and the value range of α is 5°-30°; the angle between the top surface of the lifting rod and the horizontal plane is α, and the value range of α is 5°-30°.

[0016] As a further improvement of the present invention, the pressure detection mechanism includes an automatic pressure testing machine, a first working platform and a first hydraulic cylinder. The automatic pressure testing machine is placed on a support frame, the first working platform is connected to the automatic pressure testing machine, a first positioning groove is provided on the first working platform, and one end of the first working platform is connected to the first hydraulic cylinder.

[0017] As a further improvement of the present invention, the number of the first positioning grooves is 2n, where n≥1.

[0018] As a further improvement of the present invention, the switch shaft mounting mechanism includes a first feed tray, a second working platform and a second hydraulic cylinder, the first feed tray is connected to the second working platform, the second working platform is placed on a support frame, a second positioning groove is provided on the second working platform, one end of the second working platform is connected to the second hydraulic cylinder, and the number of the second positioning groove is at least one.

[0019] As a further improvement of the present invention, the engraving and buffer pad installation mechanism includes a engraving machine, a third working platform, a second feed tray and a third hydraulic cylinder. The engraving machine is placed on a support frame. A third working platform is arranged between the engraving machine and the support frame. The third working platform is respectively connected to the second feed tray and the third hydraulic cylinder. A third positioning groove is arranged on the third working platform, and the number of the third positioning groove is at least one.

[0020] As a further improvement of the present invention, it also includes a discharging mechanism, which includes a material receiving box. The material receiving box is located at one end of the conveyor belt close to the lettering and buffer pad installation mechanism.

[0021] A method for detecting and assembling a gas pressure rod of the present invention comprises the following steps:

[0022] S1, raw material preparation, put the pressure rod to be tested into the storage box, put the switch shaft into the first feeding tray, and put the buffer pad into the second feeding tray;

[0023] S2, turn on the power, the ejection oil cylinder pushes the ejection rod, the ejection rod pushes the gas pressure rod out of the storage box, and the gas pressure rod slides to the feeding platform;

[0024] S3, the card plate of the feeding cassette engages with the pneumatic rod of the feeding platform, the feeding cassette starts to rotate, and the card plate transports the pneumatic rod to the conveyor belt;

[0025] S4, the pneumatic rod is conveyed to the first positioning groove by the conveyor belt, and the automatic pressure testing machine measures the pressure of the pneumatic rod. The pneumatic rod that passes the pressure test is pushed out of the second positioning groove by the first hydraulic cylinder and conveyed to the next station by the conveyor belt;

[0026] S5, the pneumatic rod slides from the conveyor belt to the second positioning groove, the switch shaft is transported from the first feeding tray to the second positioning groove, the second hydraulic cylinder presses the switch shaft into the pneumatic rod from one side, and pushes the pneumatic rod out of the second positioning groove, and is transported to the next station by the conveyor belt;

[0027] S6, the pneumatic rod slides from the conveyor belt to the third positioning groove, the engraving machine engraves characters on the surface of the pneumatic rod, and at the same time, the second feeding tray conveys the buffer pad to the third positioning groove, the third hydraulic cylinder sleeves the buffer pad on one side of the pneumatic rod, and the side of the pneumatic rod sleeved with the buffer pad is opposite to the side where the switch shaft is installed, and the third hydraulic cylinder pushes the pneumatic rod out of the third positioning groove, and the pneumatic rod slides to the conveyor belt;

[0028] S7. The pneumatic rod is transported to the receiving box by the conveyor belt.

[0029] 3. Beneficial effects

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] (1) The pneumatic rod detection and assembly equipment of the present invention is developed to address the problem of low efficiency of manual assembly and detection of pneumatic rods and inability to achieve quality control. The support mechanism provides an installation basis for all mechanical equipment, and a feeding mechanism is used to realize the transportation of materials between multiple workstations, overcoming the spatial distance between different workstations. The pressure detection mechanism, the switch shaft installation mechanism, and the engraving and buffer pad installation mechanism respectively realize different processes of the pneumatic rod. In order to reduce manual participation and control of mechanical equipment and reduce labor costs, the mechanical equipment is controlled by an electrical control mechanism, and the existing relatively mature control equipment is used to realize automated production, which can uniformly control the quality of products, improve production efficiency, reduce production costs, and enhance the overall competitiveness of the enterprise.

[0032] (2) In order to achieve unified control of products and improve production efficiency, the electrical control mechanism of the pneumatic rod detection and assembly equipment of the present invention adopts a PLC controller, and utilizes PLC control technology to realize the automated production of mechanical equipment, thereby reducing the investment in human capital. At the same time, the display shows the working status data of the PLC controller and the corresponding mechanical equipment controlled by the PLC controller. On the one hand, when the mechanical equipment is working in real time, the operator can monitor the production status of the equipment through the display. When the production status data of the equipment is not good, the machine can be repaired and adjusted in time, which is beneficial to extend the service life of the equipment. On the other hand, the data on the display can be stored in the PLC controller. When the mechanical equipment fails and stops, the production status data of the production equipment can be used to assist in repairing the mechanical equipment, thereby reducing the production delay time caused by machine repair.

[0033] (3) In a pneumatic rod detection and assembly device of the present invention, a feeding mechanism needs to transport the pneumatic rods to be detected to each workstation in an orderly manner. In order to avoid the cumbersome feeding of materials, a storage box is set at the beginning of the feeding mechanism. The pneumatic rods are sent out of the storage box by a pushing cylinder to push the pushing rod. The feeding cassette transports the pneumatic rods to the conveyor belt in an orderly manner. By adjusting the feeding frequency of the feeding cassette, the number of pneumatic rods on the conveyor belt can be controlled to avoid the accumulation of pneumatic rods on the conveyor belt to hinder the transmission of materials on the conveyor belt;

[0034] (4) In a gas pressure rod detection and assembly device of the present invention, the pressure detection mechanism completes the pressure test of the gas pressure rod through an automatic pressure testing machine. In order to ensure the accuracy of the pressure test, the pressure measurement time of each gas pressure rod cannot be too short. At the same time, in order to improve the efficiency of the pressure measurement, a plurality of positioning grooves are arranged on the first working platform to realize the pressure measurement of multiple gas pressure rods at the same time, thereby improving the pressure measurement efficiency;

[0035] (5) In the pneumatic rod detection and assembly equipment of the present invention, since the switch shaft and the buffer pad are respectively installed at the two ends of the pneumatic rod, if the two are carried out at the same station, the density of the equipment parts increases, and at the same time the operating space of the parts becomes smaller, it is very easy to cause installation failures of the switch shaft and the buffer pad, which will damage the pneumatic rod and the production equipment. Since the buffer pad only needs to be sleeved on the outside of one end of the pneumatic rod, the installation of the buffer pad and the engraving machine are placed at the same station, which saves the extension length of the overall equipment and reduces the occupied space;

[0036] (6) A method for detecting and assembling a pneumatic rod according to the present invention utilizes pneumatic pressure detection and assembly equipment to complete the pneumatic pressure detection of the pneumatic rod, the installation of the switch shaft and the buffer pad, and the engraving on the surface of the pneumatic rod. The overall equipment is connected into one, the detection and assembly method is simple, and no manual participation is required. After use, the production efficiency is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments, but it should be understood that these drawings are designed only for explanation purposes and are not intended to limit the scope of the present invention. In addition, unless otherwise specified, these drawings are intended only to conceptually illustrate the structural configurations described herein and are not necessarily drawn to scale.

[0038] Figure 1 It is a schematic diagram of the overall structure of a gas pressure rod detection and assembly device of the present invention;

[0039] Figure 2 for Figure 1 The overall structural diagram of the electrical control mechanism is omitted;

[0040] Figure 3 It is a schematic diagram of the basic structure of the pallet.

[0041] In the attached figure:

[0042] 100. Support mechanism; 110. Support frame;

[0043] 200, electrical control mechanism; 210, display; 220, PLC controller;

[0044] 300, feeding mechanism; 310, storage box; 311, bottom plate; 312, ejecting cylinder; 313, ejecting rod; 320, feeding platform; 330, feeding cassette; 331, cassette; 340, conveyor belt;

[0045] 400, pressure detection mechanism; 410, automatic pressure testing machine; 420, first working platform; 421, first positioning groove; 430, first hydraulic cylinder;

[0046] 500, switch shaft installation mechanism; 510, first feeding tray; 520, second working platform; 521, second positioning groove; 530, second hydraulic cylinder;

[0047] 600, lettering and buffer pad installation mechanism; 610, lettering machine; 620, third working platform; 621, third positioning groove; 630, second feeding tray; 640, third hydraulic cylinder;

[0048] 700. Discharging mechanism; 710. Receiving box. DETAILED DESCRIPTION

[0049] The following detailed description of exemplary embodiments of the present invention refers to the accompanying drawings, which form a part of the description, and in which exemplary embodiments of the present invention that can be implemented are shown as examples. Although these exemplary embodiments are described in sufficient detail to enable those skilled in the art to implement the present invention, it should be understood that other embodiments can be implemented and various changes can be made to the present invention without departing from the spirit and scope of the present invention. The following more detailed description of the embodiments of the present invention is not intended to limit the scope of the claimed invention, but is only for the purpose of illustrating and not limiting the description of the characteristics and features of the present invention, so as to propose the best mode for performing the present invention and to enable those skilled in the art to implement the present invention. Therefore, the scope of the present invention is limited only by the appended claims.

[0050] The following detailed description of the present invention and example embodiments may be better understood in conjunction with the accompanying drawings, in which elements and features of the present invention are identified by reference numerals.

[0051] Example 1

[0052] like Figure 1 ,and Figure 2As shown, a pneumatic rod detection assembly device of this embodiment includes a support mechanism 100, an electrical control mechanism 200, a feeding mechanism 300, a pressure detection mechanism 400, a switch shaft mounting mechanism 500, a lettering and buffer pad mounting mechanism 600, and a discharging mechanism 700. The support mechanism 100 provides an installation base for the feeding mechanism 300, the pressure detection mechanism 400, the switch shaft mounting mechanism 500, and the lettering and buffer pad mounting mechanism 600; the electrical control mechanism 200 is electrically connected to the feeding mechanism 300, the pressure detection mechanism 400, the switch shaft mounting mechanism 500, the lettering and buffer pad mounting mechanism 600, respectively, and the electrical connection mode is that the feeding mechanism 300, the pressure detection mechanism 400, the switch shaft mounting mechanism 500, the lettering and buffer pad mounting mechanism 600 and the electrical control mechanism 200 form a parallel circuit relationship, and different mechanisms electrically connected to the electrical control mechanism 200 do not affect each other, which is convenient for use. The above-mentioned equipment is developed to address the problems of low efficiency in manual assembly and testing of pneumatic rods and inability to achieve quality control. The support mechanism 100 provides an installation basis for all mechanical equipment. The feeding mechanism 300 realizes the transportation of materials between multiple workstations and overcomes the spatial distance between different workstations. The pressure detection mechanism 400, the switch shaft installation mechanism 500 and the engraving and buffer pad installation mechanism 600 respectively realize different processes of the pneumatic rod. In order to reduce manual participation and control of mechanical equipment and reduce labor costs, the mechanical equipment is controlled by an electrical control mechanism 200. By using existing relatively mature control equipment, automated production can be achieved, which can uniformly control product quality, improve production efficiency, reduce production costs, and enhance the overall competitiveness of the enterprise.

[0053] The support mechanism 100 includes a support frame 110. The support frame 110 can be an integrated or split type. Compared with the integrated type, the split type support frame 110 is easy to move and adjust, but attention should be paid to the stability of the support frame 110. The support frame 110 of this embodiment is a split type. Rollers are arranged under the support frame 110, and the bottom of the support frame 110 is fixed to the ground by bolts. When it is necessary to move, the bolts are removed and the support frame 110 is pushed. The support frame 110 can be moved to the position where it needs to be fixed by the rollers and then fixed. The fixing method of the support frame 110 is not limited to the fastening connection of the bolts. Any connection method that can keep the support frame 110 fixed relative to the ground can be used. The support frame 110 is provided with a feeding mechanism 300, a pressure detection mechanism 400, a switch shaft installation mechanism 500 and a lettering and buffer pad installation mechanism 600 in sequence.

[0054] The electrical control mechanism 200 includes a display 210 and a PLC controller 220. The display 210 is electrically connected to the PLC controller 220. The PLC controller 220 is electrically connected to the feeding mechanism 300, the pressure detection mechanism 400, the switch shaft installation mechanism 500, and the lettering and buffer pad installation mechanism 600. In order to achieve unified control of products and improve production efficiency, the electrical control mechanism 200 adopts the PLC controller 220, and uses the PLC control technology to realize the automated production of mechanical equipment, reducing the investment of human capital. At the same time, the display 210 displays the working status data of the PLC controller 220 and the corresponding mechanical equipment controlled by the PLC controller 220. On the one hand, when the mechanical equipment is working in real time, the operator can monitor the production status of the equipment through the display 210. When the production status data of the equipment is not good, the machine can be repaired and adjusted in time, which is conducive to extending the service life of the equipment. On the other hand, the data of the display 210 can be stored in the PLC controller 220. When the mechanical equipment fails and stops, the production status data of the production equipment can be used to assist in repairing the mechanical equipment, reducing the production delay time caused by the repair.

[0055] The feeding mechanism 300 includes a storage box 310, a feeding platform 320, a feeding cassette 330 and a conveyor belt 340, which are connected in sequence and placed on the support frame 110. A bottom plate 311 is provided at the bottom end of the storage box 310, a material ejection rod 313 is provided on the upper side of the bottom plate 311, and a material ejection oil cylinder 312 is provided on the lower side of the bottom plate 311, and the material ejection rod 313 is connected to the material ejection oil cylinder 312.

[0056] The setting of the material storage box 310 avoids frequent manual feeding, liberates manual work, in order to make the whole feeding process of the material storage box 310 not need manual intervention, the base plate 311 needs to be inclined to the side of the ejector rod 313, ensure that the gas pressure rod gathers on the side provided with the ejector rod 313, the angle between the base plate 311 and the horizontal plane is α, the value of α is too small, the material gathering effect is not obvious, the value of α is too large to reduce the capacity of the material storage box 310, speed up the frequency of feeding in the material storage box 310, and waste manual work. Simultaneously in the process that the ejector rod 313 ejects the gas pressure rod out of the material storage box 310, in order to keep the whole process of the gas pressure rod relatively stable, the top surface of the ejector rod 313, that is, the plane in contact with the gas pressure rod also needs to be arranged as a plane with an angle of inclination, and the angle between the top surface of the ejector rod 313 and the horizontal plane can be the same as the angle between the base plate 311 and the horizontal plane, which is α. The preferred value of α is 5°, 7°, 8°, 9°, 10°, 12°, 13°, 14°, 15°, 16°, 17°, 18°, 19°, 20°, 22°, 25°, 28°, 30°. The height of the top surface of the ejector rod 313 close to the storage box 310 is lower than the height of the side away from the storage box 310. There are three ejector rods 313. The purpose of setting up multiple ejector rods 313 is to solve the problem that the stroke of a single ejector rod 313 is too long and the feeding is too slow. Setting up multiple ejector rods 313 can effectively reduce the stroke of a single ejector rod 313, shorten the feeding time, and reduce the feeding pressure. Meanwhile, when the number of ejector rods 313 exceeds three, the stroke of ejector rods 313 is not significantly reduced, and a large amount of material is consumed, so two or three are better choices. The number of ejector rods 313 in this embodiment is preferably three, and the distance from the bottom surface to the top surface of the storage box 310 is divided into three equal parts. Adjacent ejector rods 313 are connected for use. When adjacent ejector rods 313 are connected, the pneumatic rod can roll on the top surface of the ejector rod 313 to transport the pneumatic rod to the top surface of the ejector rod 313 near the storage box 310. When the ejector rod 313 ejects the pneumatic rod out of the storage box 310, the pneumatic rod falls on the feeding platform 320. In order to ensure that the pneumatic rods are placed in an orderly manner on the feeding platform 320, the feeding platform 320 also needs to have a certain inclination angle, and the height of the side close to the storage box 310 is higher than the height of the side away from the storage box 310. The angle between the plane where the feeding platform 320 is located and the horizontal plane is preferably in the range of 5°-15°, and the preferred values ​​are 5°, 7°, 8°, 10°, 12°, 14°, and 15°.

[0057] The feeding cassette 330 is a nearly elliptical crawler-type cassette, and “L”-shaped clamping plates 331 are evenly distributed on the feeding cassette 330. Figure 3 As shown, the card plate 331 is "L" shaped and has two sides. Figure 1 or Figure 2The pneumatic rod is fixed on the feeding cassette 330 on one side, and the pneumatic rod is on the feeding platform 320. The non-fixed side of the card plate 331 engages the pneumatic rod. As the feeding cassette 330 moves, the card plate 331 transports the pneumatic rod to the side away from the feeding platform 320. When the non-fixed side of the card plate 331 passes the position parallel to the horizontal plane, that is, after the plane where the card plate 331 is located coincides with the horizontal plane and forms a certain angle with the horizontal plane, the pneumatic rod rolls onto the conveyor belt 340 to complete the feeding process. The conveyor belt 340 plays the role of material transmission between different workstations. The height difference between the starting point and the end point of the conveyor belt 340 between different workstations can be set, that is, the height of the starting point is higher than the height of the end point, which is convenient for material transmission and energy saving. The feeding mechanism 300 needs to transport the pneumatic rods to be tested to each workstation in an orderly manner. In order to avoid the tediousness of feeding, a storage box 310 is set at the beginning of the feeding mechanism 300. The material cylinder 312 in the storage box 310 pushes the pushing rod 313 to send the pneumatic rod out of the storage box 310, and the feeding cassette 330 transports the pneumatic rods to the conveyor belt 340 in an orderly manner. By adjusting the feeding frequency of the feeding cassette 330, the number of pneumatic rods on the conveyor belt 340 can be controlled to avoid the accumulation of pneumatic rods on the conveyor belt 340 to hinder the transmission of materials on the conveyor belt 340.

[0058] The pressure detection mechanism 400 includes an automatic pressure tester 410, a first working platform 420 and a first hydraulic cylinder 430. The automatic pressure tester 410 is placed on the support frame 110, the first working platform 420 is connected to the automatic pressure tester 410, a first positioning groove 421 is provided on the first working platform 420, one end of the first working platform 420 is connected to the first hydraulic cylinder 430, and the number of the first positioning grooves 421 is 2n, n≥1. The automatic pressure tester 410 is used for pressure detection of the gas pressure rod, the first working platform 420 is used to place the gas pressure rod and provide an operating space for pressure detection, and the first working platform 420 is provided with a first positioning groove 421, which is used to place the gas pressure rod during the gas pressure detection process, and plays a certain role in stabilizing the gas pressure rod. The first positioning groove 421 is made of steel that adapts to the contour of the gas pressure rod. A bracket is provided in the middle of the first positioning groove 421. The bracket is connected to the first hydraulic cylinder 430. The first hydraulic cylinder 430 can control the movement of the bracket, and the bracket can support the gas pressure rod to complete the movement of the gas pressure rod. The number of the first positioning grooves 421 in this embodiment is 6. The three near the feeding mechanism 300 are preparation stations for preparing for the gas pressure rod to detect the pressure, and the three away from the feeding mechanism 300 are pressure detection stations for the automatic pressure testing machine 410 to test the gas pressure rod. The pneumatic rod on the conveyor belt 340 rolls down to the preparation station of the first positioning groove 421, and the first hydraulic cylinder 430 props up the bracket in the middle of the preparation station. The bracket drives the pneumatic rod so that the pneumatic rod is placed in the pressure detection station of the first positioning groove 421. After the pressure detection is completed, the bracket in the pressure detection station props up the pneumatic rod and moves the pneumatic rod with qualified air pressure to the next section of the conveyor belt 340. For the pneumatic rod that fails the air pressure detection, the first hydraulic cylinder 430 moves the bracket on the corresponding pressure detection station and moves the pneumatic rod out of the conveyor belt 340 through the bracket. The pressure detection mechanism 400 completes the test of the pressure of the pneumatic rod through the automatic pressure testing machine 410. In order to ensure the accuracy of the pressure test, the pressure measurement time of each pneumatic rod cannot be too short. At the same time, in order to improve the efficiency of the pressure measurement, multiple positioning grooves are set on the first working platform 420 to realize the pressure measurement of multiple pneumatic rods at the same time, thereby improving the pressure measurement efficiency.

[0059] The switch shaft installation mechanism 500 includes a first feeding tray 510, a second working platform 520 and a second hydraulic cylinder 530. The first feeding tray 510 is connected to the second working platform 520. The second working platform 520 is placed on the support frame 110. A second positioning groove 521 is provided on the second working platform 520. One end of the second working platform 520 is connected to the second hydraulic cylinder 530. The number of the second positioning groove 521 is at least one. The switch shaft is placed in the first feeding tray 510. The first feeding tray 510 and the second working platform 520 are connected by a slide rail. When the first feeding tray 510 is in working state, the switch shaft is sent out by the first feeding tray 510 and transported to the second working platform 520 through the slide rail. On the second working platform 520, the switch shaft is pushed by the second hydraulic cylinder 530 so that the switch shaft is embedded in the gas pressure rod to be installed with the switch shaft. In this embodiment, the number of the second positioning grooves 521 is two. The two second positioning grooves 521 can realize the simultaneous installation of the switch shaft on two gas pressure rods, which greatly improves the production efficiency. The structural structure of the second positioning groove 521 is basically the same as that of the first positioning groove 421, and is composed of the steel profile supporting the pneumatic rod and the bracket in the middle. After the second hydraulic cylinder 530 completes the installation of the switch shaft, the second hydraulic cylinder 530 controls the bracket under the second positioning groove 521 to transport the pneumatic rod with the switch shaft installed to the conveyor belt 340 and then to the next workstation.

[0060] The lettering and buffer pad installation mechanism 600 includes a lettering machine 610, a third working platform 620, a second feed tray 630 and a third hydraulic cylinder 640. The lettering machine 610 is placed on the support frame 110. The third working platform 620 is arranged between the lettering machine 610 and the support frame 110. The third working platform 620 is connected to the second feed tray 630 and the third hydraulic cylinder 640 respectively. The third working platform 620 is provided with a third positioning groove 621. The number of the third positioning groove 621 is at least one, specifically two. The pneumatic rod slides from the conveyor belt 340 to the third working platform 620, enters the third positioning groove 621 on the third working platform 620 and is fixed. The lettering end of the lettering machine 610 is pressed down to letter on the surface of the pneumatic rod. After the lettering is completed, the lettering end of the lettering machine 610 is lifted. The second feeding tray 630 transports the arranged buffer pad to the third working platform 620 through the slide rail, and the third hydraulic cylinder 640 sleeves the buffer pad on the opposite end of the switch shaft. After the buffer pad is installed, the third hydraulic cylinder 640 controls the bracket under the third positioning groove 621 to transport the finished gas pressure rod to the conveyor belt 340. Since the switch shaft and the buffer pad are respectively installed at both ends of the gas pressure rod, if the two are carried out at the same station, the density of equipment parts increases, and the operating space of the parts becomes smaller, which is very easy to cause installation failures of the switch shaft and the buffer pad, damage to the gas pressure rod, and damage to the production equipment. Since the buffer pad only needs to be sleeved on the outside of one end of the gas pressure rod, the installation of the buffer pad and the engraving machine 610 are placed on the same station, saving the extension length of the overall equipment and reducing the occupied space.

[0061] The discharging mechanism 700 includes a receiving box 710, which is arranged at the tail end of the conveyor belt 340, that is, the end away from the storage box 310, and the finished pneumatic rod slides into the receiving box 710 through the conveyor belt 340. A roller is arranged at the bottom of the receiving box 710, and the movement of the receiving box 710 can be completed by pushing the roller.

[0062] The above-mentioned storage box 310, receiving box 710 and corresponding support frame 110 are provided with rollers at the bottom, all of which have a self-locking function. The internal structures of the first positioning groove 421, the second positioning groove 521 and the third positioning groove 621 are similar, and steel frames are used at both ends to support the pneumatic rod. The hollow positioning grooves and the hollow parts are provided with brackets to realize the movement of the pneumatic rod. The above-mentioned brackets can stably support the bottom of the pneumatic rod, and there will be no instability during the transportation of the pneumatic rod. The connection between the above-mentioned first hydraulic cylinder 430, the second hydraulic cylinder 530 and the third hydraulic cylinder 640 and the working platform is simplified, and their functions can be realized by using existing simple mechanical operations.

[0063] Example 2

[0064] The structure of this embodiment is basically the same as that of the first embodiment, except that the number of the first positioning grooves 421 is two, the number of the second positioning grooves 521 is one, and the number of the third positioning grooves 621 is one.

[0065] Example 3

[0066] This embodiment proposes a method for detecting and assembling a gas pressure rod based on Embodiment 1 and Embodiment 2, comprising the following steps:

[0067] S1, raw material preparation, put the pressure rod to be tested into the storage box 310, put the switch shaft into the first feeding tray 510, and put the buffer pad into the second feeding tray 630;

[0068] S2, turn on the power, the ejection oil cylinder 312 pushes the ejection rod 313, the ejection rod 313 pushes the gas pressure rod out of the storage box 310, and the gas pressure rod slides to the feeding platform 320;

[0069] S3, the clamping plate 331 of the feeding cassette 330 clamps the pneumatic rod of the feeding platform 320, the feeding cassette 330 starts to rotate, and the clamping plate 331 transports the pneumatic rod to the conveyor belt 340;

[0070] S4, the pneumatic rod is conveyed to the first positioning groove 421 by the conveyor belt 340, and the automatic pressure testing machine 410 measures the pressure of the pneumatic rod. The pneumatic rod that passes the pressure test is pushed out of the second positioning groove 521 by the first hydraulic cylinder 430 and conveyed to the next station by the conveyor belt 340;

[0071] S5, the pneumatic rod slides down from the conveyor belt 340 to the second positioning groove 521, the switch shaft is transported from the first feeding tray 510 to the second positioning groove 521, the second hydraulic cylinder 530 presses the switch shaft into the pneumatic rod from one side, and pushes the pneumatic rod out of the second positioning groove 521, and is transported to the next station by the conveyor belt 340;

[0072] S6, the pneumatic rod slides from the conveyor belt 340 to the third positioning groove 621, the engraving machine 610 engraves characters on the surface of the pneumatic rod, and at the same time, the second feeding tray 630 conveys the buffer pad to the third positioning groove 621, and the third hydraulic cylinder 640 sleeves the buffer pad on one side of the pneumatic rod, and the side of the pneumatic rod sleeved with the buffer pad is opposite to the side where the switch shaft is installed, and the third hydraulic cylinder 640 pushes the pneumatic rod out of the third positioning groove 621, and the pneumatic rod slides to the conveyor belt 340;

[0073] S7. The pneumatic rod is transported to the receiving box 710 by the conveyor belt 340.

[0074] The method utilizes air pressure detection and assembly equipment to complete air pressure detection of the air pressure rod, installation of the switch shaft and the buffer pad, and engraving on the surface of the air pressure rod. The overall equipment is connected into one, the detection and assembly method is simple, and no manual participation is required. After use, the production efficiency is greatly improved.

Claims

1. A gas pressure rod detection and assembly device, characterized in that: The invention comprises a support mechanism (100), an electrical control mechanism (200), a feeding mechanism (300), a pressure detection mechanism (400), a switch shaft mounting mechanism (500), and a lettering and buffer pad mounting mechanism (600); the support mechanism (100) comprises a support frame (110); the electrical control mechanism (200) is electrically connected to the feeding mechanism (300), the pressure detection mechanism (400), the switch shaft mounting mechanism (500), and the lettering and buffer pad mounting mechanism (600), respectively; and the feeding mechanism (300), the pressure detection mechanism (400), the switch shaft mounting mechanism (500), and the lettering and buffer pad mounting mechanism (600) are placed on the support frame (110) in sequence; The electrical control mechanism (200) comprises a display (210) and a PLC controller (220), the display (210) being electrically connected to the PLC controller (220), and the PLC controller (220) being electrically connected to the feeding mechanism (300), the pressure detection mechanism (400), the switch shaft installation mechanism (500), and the lettering and buffer pad installation mechanism (600); The feeding mechanism (300) comprises a material storage box (310), a feeding platform (320), a feeding cassette (330) and a conveyor belt (340); the material storage box (310), the feeding platform (320), the feeding cassette (330) and the conveyor belt (340) are connected in sequence and placed on a support frame (110); and "L"-shaped card plates (331) are evenly distributed on the feeding cassette (330); The pressure detection mechanism (400) comprises an automatic pressure testing machine (410), a first working platform (420) and a first hydraulic cylinder (430); the automatic pressure testing machine (410) is placed on a support frame (110); the first working platform (420) is connected to the automatic pressure testing machine (410); a first positioning groove (421) is provided on the first working platform (420); one end of the first working platform (420) is connected to the first hydraulic cylinder (430); a pneumatic rod that passes the pressure test is pushed out of the second positioning groove (521) by the first hydraulic cylinder (430) and is conveyed to the next workstation by the conveyor belt (340); The switch shaft installation mechanism (500) comprises a first feeding tray (510), a second working platform (520) and a second hydraulic cylinder (530); the first feeding tray (510) is connected to the second working platform (520); the second working platform (520) is placed on a support frame (110); a second positioning groove (521) is provided on the second working platform (520); one end of the second working platform (520) is connected to the second hydraulic cylinder (530); the number of the second positioning groove (521) is at least one; the second hydraulic cylinder (530) presses the switch shaft into the gas pressure rod from one side, and pushes the gas pressure rod out of the second positioning groove (521), and is transported to the next workstation by the conveyor belt (340); The engraving and buffer pad installation mechanism (600) comprises an engraving machine (610), a third working platform (620), a second feeding tray (630) and a third hydraulic cylinder (640). The engraving machine (610) is placed on a support frame (110). A third working platform (620) is arranged between the engraving machine (610) and the support frame (110). The third working platform (620) is connected to the second feeding tray (630) and the third hydraulic cylinder (640) respectively. A third positioning groove (621) is arranged on the third working platform (620). The number of the third positioning groove (621) is at least one. The third hydraulic cylinder (640) sleeves the buffer pad on one side of the gas pressure rod. The side of the gas pressure rod sleeved with the buffer pad is opposite to the side of the switch shaft. The third hydraulic cylinder (640) pushes the gas pressure rod out of the third positioning groove (621), and the gas pressure rod slides onto the conveyor belt (340).

2. The gas pressure rod detection and assembly equipment according to claim 1, characterized in that: A bottom plate (311) is provided at the bottom end of the storage box (310), a material ejection rod (313) is provided on the upper side of the bottom plate (311), a material ejection oil cylinder (312) is provided on the lower side of the bottom plate (311), and the material ejection rod (313) is connected to the material ejection oil cylinder (312); an angle α between the bottom plate (311) and a horizontal plane is formed, and a value range of α is 5°-30°; an angle α between a top surface of the material ejection rod (313) and a horizontal plane is formed, and a value range of α is 5°-30°.

3. The gas pressure rod detection and assembly equipment according to claim 2, characterized in that: The number of the first positioning grooves (421) is 2n, where n≥1.

4. The gas pressure rod detection and assembly equipment according to claim 3, characterized in that: It also includes a material discharging mechanism (700), the material discharging mechanism (700) including a material receiving box (710), the material receiving box (710) being located at one end of the conveyor belt (340) close to the lettering and buffer pad installation mechanism (600).

5. A method for detecting and assembling a gas pressure rod, using the gas pressure rod detection and assembly equipment according to claim 4, characterized in that: The following steps are involved: S1, raw material preparation, placing a pressure rod to be tested into a material storage box (310), placing a switch shaft into a first feeding tray (510), and placing a buffer pad into a second feeding tray (630); S2, turn on the power supply, the ejection oil cylinder (312) pushes the ejection rod (313), the ejection rod (313) pushes the gas pressure rod out of the storage box (310), and the gas pressure rod slides to the feeding platform (320); S3, the clamping plate (331) of the feeding cassette (330) clamps the pneumatic rod of the feeding platform (320), the feeding cassette (330) starts to rotate, and the clamping plate (331) transports the pneumatic rod to the conveyor belt (340); S4, the pneumatic rod is conveyed to the first positioning groove (421) by the conveyor belt (340), the automatic pressure testing machine (410) measures the pressure of the pneumatic rod, and the pneumatic rod that passes the pressure test is pushed out of the second positioning groove (521) by the first hydraulic cylinder (430) and conveyed to the next station by the conveyor belt (340); S5, the pneumatic rod slides from the conveyor belt (340) to the second positioning groove (521), the switch shaft is transported from the first feeding tray (510) to the second positioning groove (521), the second hydraulic cylinder (530) presses the switch shaft into the pneumatic rod from one side, and pushes the pneumatic rod out of the second positioning groove (521), and is transported to the next workstation by the conveyor belt (340); S6, the pneumatic rod slides from the conveyor belt (340) to the third positioning groove (621), the engraving machine (610) engraves characters on the surface of the pneumatic rod, and at the same time, the second feeding tray (630) conveys the buffer pad to the third positioning groove (621), the third hydraulic cylinder (640) sleeves the buffer pad on one side of the pneumatic rod, the side of the pneumatic rod sleeved with the buffer pad is opposite to the side on which the switch shaft is installed, the third hydraulic cylinder (640) pushes the pneumatic rod out of the third positioning groove (621), and the pneumatic rod slides to the conveyor belt (340); S7. The pneumatic rod is transported to the receiving box (710) by the conveyor belt (340).

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