Intelligent assembly production line for the assembly of chair wheels of study chairs

Abstract

The present invention belongs to the technical field of industrial robots, relates to the chair wheels of study chairs, and particularly relates to an intelligent assembly production line for assembling the chair wheels of study chairs. It includes a station for placing the wheel frames, a station moving mechanism, and a wheel frame loading mechanism, a first oil injection mechanism, a thin spring assembly mechanism, a thick spring assembly mechanism, a second oil injection mechanism, a brake part assembly mechanism, a wheel axle assembly mechanism, a traveling wheel assembly mechanism, a wheel frame flipping mechanism, a third oil injection mechanism, a rotating shaft assembly mechanism, and a palletizing mechanism that are sequentially arranged along the moving direction of the stations. The present invention effectively realizes the automatic assembly of the chair wheels of study chairs by using mechanisms such as the wheel frame loading mechanism, the first oil injection mechanism, the thin spring assembly mechanism, the thick spring assembly mechanism, the second oil injection mechanism, the brake part assembly mechanism, the wheel axle assembly mechanism, the traveling wheel assembly mechanism, and the wheel frame flipping mechanism that are sequentially arranged along the moving direction of the stations, thereby solving the technical problems existing in the existing chair wheel assembly process.

Description

Technical Field

[0001] The present invention belongs to the technical field of industrial robots, relates to the chair wheels of study chairs, and particularly relates to an intelligent assembly production line for assembling the chair wheels of study chairs. Background Art

[0002] When in use, a children's study chair is required to be easily movable. After entering the learning state, the chair wheels should be able to be locked to ensure that children maintain a correct sitting posture during learning. For this purpose, the State Intellectual Property Office has disclosed an adjustable braking chair wheel {CN202020893325.8}. This braking chair wheel consists of seven major parts, specifically a wheel frame assembly, a wheel axle, a running wheel, a rotating shaft, a braking member, a compression spring (thin spring), and an adjusting spring (thick spring). The assembly production process of such chair wheels is numerous and complex. For example, first install the adjusting spring on the wheel frame assembly, then install one end of the compression spring with the braking member, then install the other end of the compression spring and the braking member together on the wheel frame assembly, then install a running wheel at one end of the wheel axle, then pass the other end of the wheel axle through the wheel frame assembly and also install a running wheel at the other end of the wheel axle, and finally install the rotating shaft on the wheel frame assembly and install the rotating shaft in place by using a pressing device or by knocking.

[0003] Therefore, the production process of the entire set of chair wheels is complex and cumbersome. The traditional processing method is manual assembly, but the manual assembly efficiency is low and a pressing device is used multiple times in the entire assembly process. Although the use of the pressing device can achieve the purpose of pressing, it is used in a state of manual clamping. If the staff is not careful, it may cause accidental injury. Therefore, in order to solve the above technical problems, an intelligent assembly production line for assembling the chair wheels of study chairs is proposed. Summary of the Invention

[0004] Aiming at the technical problems existing in the assembly process of the above-mentioned study chair wheels, the present invention proposes an intelligent assembly production line for assembling the chair wheels of study chairs, which is ingeniously designed, reasonable in structure and can realize the automatic assembly of chair wheels.

[0005] To achieve the above object, the technical solution adopted by the present invention is as follows: The present invention provides an intelligent assembly production line for the assembly of chair wheels of a learning chair, including a station for placing the wheel frame, a station moving mechanism for moving the station, and a wheel frame feeding mechanism for placing the wheel frame on the station, a first oil injection mechanism for injecting oil into the wheel frame for the first time, a thin spring assembly mechanism for placing a thin spring into the wheel frame, a thick spring assembly mechanism for placing a thick spring into the wheel frame, a second oil injection mechanism for injecting oil into the wheel frame for the second time, a brake part assembly mechanism for assembling a brake part into the wheel frame, a wheel axle assembly mechanism for assembling a wheel axle into the wheel frame, a walking wheel assembly mechanism for assembling a walking wheel onto the wheel frame, a wheel frame flipping mechanism for flipping the wheel frame, a third oil injection mechanism for injecting oil into the wheel frame for the third time, a rotating shaft assembly mechanism for installing a rotating shaft into the wheel frame, and a palletizing mechanism for separating the assembled chair wheel from the station and collecting the assembled wheel frame, which are arranged in sequence along the moving direction of the station.

[0006] Preferably, the wheel frame feeding mechanism includes a wheel frame vibrating feeding tray for inversely conveying the wheel frame and a wheel frame placing unit for gripping and placing the wheel frame on the station. Among them, the wheel frame placing unit includes a clamping cylinder for clamping the wheel frame arranged on one side of the station moving mechanism, a wheel frame lifting cylinder for controlling the lifting of the clamping cylinder, and a wheel frame reciprocating cylinder for controlling the wheel frame lifting cylinder to reciprocate between the station and the wheel frame vibrating feeding tray.

[0007] Preferably, both the thin spring assembly mechanism and the thick spring assembly mechanism include a spring vibrating feeding tray for conveying the thin spring or the thick spring and a spring installing unit for installing the thin spring or the thick spring. The spring installing unit includes a guiding tube for adjusting the thin spring or the thick spring to a vertical state and a spring blanking block arranged below the guiding tube. A spring guiding groove is arranged on the spring blanking block. The spring guiding groove penetrates through one end of the spring blanking block far away from the station moving mechanism. The spring guiding groove is arranged below the guiding tube. A spring pushing block is arranged in the spring guiding groove. One end of the spring pushing block far away from the spring blanking block is provided with a spring pushing cylinder. A spring blanking hole is also arranged on the spring blanking block. The spring blanking hole is communicated with the spring guiding groove and is arranged at one end of the spring guiding groove far away from the spring pushing block. A spring pressing rod is arranged above the spring blanking hole. The spring pressing rod is arranged to lift above the spring blanking hole.

[0008] Preferably, the axle assembly mechanism includes an axle vibrating loading tray for conveying axles and an axle guiding seat arranged at the end of the output end of the axle vibrating loading tray. The axle guiding seat is hollow, and an axle inlet hole is arranged on one side of the axle guiding seat. The axle guiding seat is communicated with the output end of the axle vibrating loading tray through the axle inlet hole. An axle outlet hole is arranged on the side of the axle guiding seat away from the axle inlet hole. The axle outlet hole is arranged at one end of the axle guiding seat away from the axle inlet hole, and the axle outlet hole is arranged obliquely below the axle inlet hole. A push rod for pushing the axle out of the axle outlet hole is further arranged outside the axle guiding seat, and the push rod is telescopically arranged relative to the axle guiding seat.

[0009] Preferably, the running wheel assembly mechanism includes a running wheel assembly frame arranged above the station moving mechanism. A running wheel guiding groove for adjusting the running wheel to be in a vertical state is arranged on the running wheel assembly frame. The running wheel guiding grooves are arranged on both sides of the station. An assembly hole is arranged at the bottom of the running wheel guiding groove. A running wheel pushing cylinder for pushing the running wheel through the assembly hole onto the axle is arranged on the running wheel assembly frame. The running wheel assembly mechanism further includes a running wheel vibrating loading tray for conveying running wheels, and the output end of the running wheel vibrating loading tray is communicated with the running wheel guiding groove.

[0010] Preferably, a fourth oil injection mechanism for injecting oil into the running wheel is further arranged on the running wheel assembly frame.

[0011] Preferably, the first oil injection mechanism, the second oil injection mechanism, the third oil injection mechanism and the fourth oil injection mechanism all include an oil injection cylinder and an oil injection seat arranged at the output end of the oil injection cylinder. An oil dripping nozzle is arranged on the oil injection seat. An oil dripping pipe is communicated with the oil dripping nozzle, and a metering valve is arranged on the oil dripping pipe.

[0012] Preferably, the wheel frame turning mechanism includes a rotating mechanism arranged on one side of the station moving mechanism and a lifting unit arranged at the power end of the rotating mechanism. A wheel frame clamping cylinder is arranged at the output end of the lifting unit.

[0013] Preferably, the shaft assembly mechanism includes a shaft vibrating loading tray for conveying shafts and a shaft mounting seat arranged at the end of the output end of the shaft vibrating loading tray. A shaft guiding groove for adjusting the shaft to be in a vertical state is arranged on the shaft mounting seat. The shaft mounting seat is communicated with the shaft vibrating loading tray through the shaft guiding groove. An installation cylinder is arranged on the shaft mounting seat. The power end of the installation cylinder is arranged at the end of the shaft guiding groove, and a clamping and releasing mechanism for releasing and clamping the shaft is arranged at the end of the shaft guiding groove.

[0014] Preferably, the loose clamping mechanism includes clamping blocks arranged on both sides of the rotating shaft. The top of the clamping block is pivotally connected to the rotating shaft mounting seat. A reset shaft is arranged at the bottom of the clamping block. The reset shaft penetrates through the rotating shaft mounting seat. An arc-shaped slot hole for the reset shaft to pass through and slide is arranged on the rotating shaft mounting seat. A reset spring is arranged between the reset shaft and the rotating shaft mounting seat.

[0015] Preferably, a rotating shaft auxiliary pressing mechanism is also provided. The rotating shaft auxiliary pressing mechanism is arranged between the rotating shaft assembling mechanism and the palletizing mechanism. The rotating shaft auxiliary pressing mechanism includes a pressing frame arranged on one side of the station moving mechanism and a pressing cylinder arranged on the pressing frame. The power end of the pressing cylinder faces the station direction.

[0016] Preferably, the station moving mechanism is a rotary table type station moving mechanism.

[0017] Preferably, the station moving mechanism includes a walking wheel installation station moving mechanism and a rotating shaft installation station moving mechanism. Among them, the wheel frame feeding mechanism, the first oil injection mechanism, the thin spring assembling mechanism, the thick spring assembling mechanism, the second oil injection mechanism, the brake part assembling mechanism, the wheel axle assembling mechanism, and the walking wheel assembling mechanism are arranged around the walking wheel installation station moving mechanism.

[0018] Preferably, the brake part assembling mechanism includes a brake part vibrating feeding tray for adjusting the brake part to a vertical state and a brake part placing unit for grasping and placing the brake part on the wheel frame. The brake part placing unit includes a brake part clamping cylinder arranged on one side of the station moving mechanism for clamping the brake part, a brake part lifting cylinder for controlling the lifting of the clamping cylinder, and a brake part reciprocating cylinder for controlling the reciprocation of the brake part lifting cylinder in the station and the direction of the brake part vibrating feeding tray.

[0019] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0020] The present invention provides an intelligent assembly production line for learning chair wheel assembly. By arranging a wheel frame feeding mechanism, a first oil injection mechanism, a thin spring assembling mechanism, a thick spring assembling mechanism, a second oil injection mechanism, a brake part assembling mechanism, a wheel axle assembling mechanism, a walking wheel assembling mechanism, a wheel frame flipping mechanism, a third oil injection mechanism, a rotating shaft assembling mechanism, and a palletizing mechanism in sequence along the station moving direction, the automatic assembly of learning chair wheels is effectively realized, and thus the technical problems existing in the existing chair wheel assembly process are solved. Brief Description of the Drawings

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 Schematic structural diagram of the intelligent assembly production line for learning chair wheel assembly provided in Embodiment 1;

[0023] Figure 2 Top view of the intelligent assembly production line for learning chair wheel assembly provided in Embodiment 1;

[0024] Figure 3 Schematic structural diagram of the working station of the wheel carrier in the inverted state provided in Embodiment 1;

[0025] Figure 4 Schematic structural diagram of the working station of the wheel carrier in the normal placement state provided in Embodiment 1;

[0026] Figure 5 Schematic structural diagram of the wheel carrier feeding mechanism provided in Embodiment 1;

[0027] Figure 6 Schematic structural diagram of the oil injection mechanism provided in Embodiment 1;

[0028] Figure 7 Schematic structural diagram of the spring placement mechanism provided in Embodiment 1;

[0029] Figure 8 Schematic structural diagram of the spring installation unit provided in Embodiment 1;

[0030] Figure 9 Schematic structural diagram of the brake part assembly mechanism provided in Embodiment 1;

[0031] Figure 10 Schematic structural diagram of the wheel axle assembly mechanism provided in Embodiment 1;

[0032] Figure 11 Schematic structural diagram of the wheel axle guide seat provided in Embodiment 1;

[0033] Figure 12 Schematic structural diagram of the wheel carrier flipping mechanism provided in Embodiment 1;

[0034] Figure 13 Schematic structural diagram of another angle of the wheel carrier flipping mechanism provided in Embodiment 1;

[0035] Figure 14 Schematic structural diagram of the rotating shaft assembly mechanism provided in Embodiment 1;

[0036] Figure 15 Schematic structural diagram of the rotating shaft mounting seat provided for Embodiment 1;

[0037] Figure 16 Schematic structural diagram of the clamping and releasing mechanism provided for Embodiment 1;

[0038] Figure 17 Schematic structural diagram of the clamping and releasing mechanism from another angle provided for Embodiment 1;

[0039] Figure 18 Schematic structural diagram of the traveling wheel placement mechanism provided for Embodiment 1;

[0040] Figure 19 Partial schematic structural diagram of the traveling wheel assembly frame provided for Embodiment 1;

[0041] In the above figures, 1, station moving mechanism; 11, traveling wheel installation station moving mechanism; 12, rotating shaft installation station moving mechanism; 13, station; 14, palletizing mechanism; 15, coarse spring assembly mechanism; 2, wheel rack feeding mechanism; 21, wheel rack vibrating feeding tray; 22, clamping cylinder; 23, wheel rack lifting cylinder; 24, wheel rack reciprocating cylinder; 3, fine spring assembly mechanism; 31, spring vibrating feeding tray; 32, guiding tube; 33, spring blanking block; 331, spring guiding groove; 34, spring pushing block; 35, spring pushing cylinder; 36, spring pressing rod; 37, pressing rod cylinder; 4, wheel shaft assembly mechanism; 41, wheel shaft vibrating feeding tray; 42, wheel shaft guiding seat; 421, wheel shaft inlet hole; 422, wheel shaft outlet hole; 43, push rod; 44, push rod cylinder; 5, traveling wheel assembly mechanism; 51, traveling wheel assembly frame; 52, traveling wheel guiding groove; 521, assembly hole; 53, traveling wheel vibrating feeding tray; 54, pushing cylinder; 6, oil injection mechanism; 61, first oil injection mechanism; 62, second oil injection mechanism; 63, third oil injection mechanism; 64, fourth oil injection mechanism; 65, oil injection cylinder; 66, oil injection seat; 67, oil dripping nozzle; 68, oil dripping pipe; 69, metering valve; 7, wheel rack flipping mechanism; 71, rotating mechanism; 72, lifting unit; 73, wheel rack clamping cylinder; 74, wheel rack auxiliary flipping mechanism; 741, auxiliary moving cylinder; 742, auxiliary lifting cylinder; 743, auxiliary clamping cylinder; 8, rotating shaft assembly mechanism; 81, rotating shaft vibrating feeding tray; 82, rotating shaft mounting seat; 821, arc-shaped slot hole; 83, rotating shaft guiding groove; 84, mounting cylinder; 85, clamping and releasing mechanism; 851, clamping block; 852, reset shaft; 9, rotating shaft auxiliary pressing mechanism; 91, pressing frame; 92, pressing cylinder; 10, brake part assembly mechanism; 101, brake part vibrating feeding tray; 102, brake part clamping cylinder; 103, brake part lifting cylinder; 104, brake part reciprocating cylinder; 105, brake part auxiliary pressing cylinder. Detailed implementation manners

[0042] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0043] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0044] Embodiment 1, as Figures 1 - 2 shown, the purpose of this embodiment is to solve the technical problems of low automation degree and safety risks in the installation of the existing children's learning chair casters (the caster structure of the children's learning chair provided by the patent number CN202020893325.8). To this end, in order to achieve the above object, an intelligent assembly production line for learning chair caster assembly provided in this embodiment includes a station 13 for placing the wheel frame. The main purpose of the station 13 is to fix the wheel frame to achieve the purpose of stably driving the movement of the wheel frame, and it needs to satisfy the fixation of the wheel frame when it is placed upright and upside down. In this embodiment, as Figure 3 shown, it satisfies the stability of the wheel frame in the upside-down state. Its overall structure is arranged in a cuboid shape, with a groove opened at the top, and the contour of the groove wall is the same as the contour of the wheel frame when it is upside down. In this way, the requirement of upside-down placement is met. When it is placed upright, as Figure 4 shown, since the traveling wheels are installed at this time, the entire wheel frame can be fixed by using the two traveling wheels. Of course, other methods can also be used to achieve fixation. For example, fixation in both the upright and upside-down states can be achieved, which mainly depends on the contour of the wheel frame. Therefore, in this embodiment, it is not described.

[0045] The setting of the station 13 meets the placement requirements of the wheel frame. For the installation of other components, the station 13 needs to continuously move to the position of the next station 13. To this end, a station moving mechanism 1 for moving the station 13 is also provided. The moving method of the station 13 can be various. For example, in this embodiment, a turntable type station moving mechanism 1 is used. It uses a motor to drive the turntable to fix the station 13 on the turntable. Each rotation of the turntable moves one station 13, thereby realizing the adjustment of the station 13. The driving method of the conveyor belt can also be used. Considering that two different states of the station 13 are used in this embodiment, the station moving mechanism 1 includes a traveling wheel installation station moving mechanism 11 and a rotating shaft installation station moving mechanism 12, which respectively correspond to the wheel frame installation process in the upside-down state and the wheel frame installation process in the upright state. At the same time, the turntable type station moving mechanism 1 is also beneficial to the saving of space.

[0046] Specifically, the wheel carrier loading mechanism 2, the first oil injection mechanism 61, the fine spring assembly mechanism 3, the thick spring assembly mechanism 15, the second oil injection mechanism 62, the brake part assembly mechanism 10, the wheel axle assembly mechanism 4, and the traveling wheel assembly mechanism 5 are arranged around the traveling wheel installation station moving mechanism 11, and the wheel carrier loading mechanism 2, the first oil injection mechanism 61, the fine spring assembly mechanism 3, the thick spring assembly mechanism 15, the second oil injection mechanism 62, the brake part assembly mechanism 10, the wheel axle assembly mechanism 4, and the traveling wheel assembly are arranged in sequence according to the moving direction of the station 13. The remaining wheel carrier flipping mechanism 7, the third oil injection mechanism 63, the rotating shaft assembly mechanism 8, and the palletizing mechanism 14 are arranged around the rotating shaft installation station moving mechanism 12 in sequence according to the moving direction of the station 13.

[0047] In this embodiment, the wheel carrier loading mechanism 2 is used to place the wheel carrier on the station 13; the first oil injection mechanism 61 is used to inject oil into the wheel carrier for the first time; the fine spring assembly mechanism 3 is used to place fine springs into the wheel carrier; the thick spring assembly mechanism 15 is used to place thick springs into the wheel carrier; the second oil injection mechanism 62 is used to inject oil into the wheel carrier for the second time; the brake part assembly mechanism 10 is used to assemble brake parts into the wheel carrier; the wheel axle assembly mechanism 4 is used to assemble the wheel axle into the wheel carrier; the traveling wheel assembly mechanism 5 is used to assemble the traveling wheels onto the wheel carrier; the wheel carrier flipping mechanism 7 is used to flip the wheel carrier to achieve the transformation from the inverted state to the upright state; the third oil injection mechanism 63 is used to inject oil into the wheel carrier for the third time; the rotating shaft assembly mechanism 8 is used to install the rotating shaft into the wheel carrier; the palletizing mechanism 14 is used to separate the assembled chair wheels from the station 13 and collect the assembled wheel carriers.

[0048] To achieve the above object, as Figure 5 shown, the wheel carrier loading mechanism 2 provided in this embodiment includes a wheel carrier vibrating loading tray 21 for inverting and conveying the wheel carrier and a wheel carrier placing unit for grasping and placing the wheel carrier on the station 13. The vibrating loading tray is an auxiliary feeding device for automatic assembly or automatic processing machinery. It can arrange various products in an orderly manner, cooperate with the automatic assembly equipment to assemble various parts of the product into a complete product, or cooperate with the automatic processing machinery to complete the processing of the workpiece. There is a pulse electromagnet under the vibrating disk hopper, which can make the hopper vibrate in the vertical direction, and the inclined spring plate drives the hopper to perform a torsional vibration around its vertical axis. The parts in the hopper rise along the spiral track due to this vibration. During the rising process, through a series of track screening or attitude changes, the parts can automatically enter the assembly or processing position in a unified state according to the requirements of assembly or processing. Its working purpose is to automatically arrange the disordered workpieces in an orderly and accurate manner through vibration and convey them to the next process.

[0049] In this embodiment, the wheel carrier vibrating loading tray 21 is used to arrange the wheel carriers in an inverted manner. The wheel carrier placing unit includes a clamping cylinder 22 for clamping the wheel carrier, which is arranged on one side of the station moving mechanism 1, a wheel carrier lifting cylinder 23 for controlling the lifting of the clamping cylinder 22, and a wheel carrier reciprocating cylinder 24 for controlling the reciprocating movement of the wheel carrier lifting cylinder 23 in the directions of the station 13 and the wheel carrier vibrating loading tray 21. In this embodiment, the clamping cylinder 22 adopts a common existing finger cylinder, which can meet the clamping of the wheel carrier. The wheel carrier lifting cylinder 23 is used to raise or lower the height of the finger cylinder. The main purpose of raising the height is to take out the wheel carrier from the output end of the wheel carrier vibrating loading tray 21, while lowering the height is to place the wheel carrier on the station 13. For this purpose, the cooperation of the wheel carrier reciprocating cylinder 24 is required. In this embodiment, in order to save space as much as possible, the wheel carrier reciprocating cylinder 24 is a rodless cylinder. In this way, under the reciprocating movement of the wheel carrier reciprocating cylinder 24 and in cooperation with the turntable type station moving mechanism 1, the wheel carriers are continuously placed on the idle station 13.

[0050] In order to facilitate the placement of the fine springs and the thick springs, a first oil injection mechanism 61 is provided on the next station 13. Its main function is to inject oil into the placement holes of the fine springs and the thick springs in the wheel carrier to achieve the purpose of protecting the fine springs and the thick springs.

[0051] Since the fine spring assembly mechanism 3 and the thick spring assembly mechanism 15 are the same, in this embodiment, only the fine spring assembly mechanism 3 will be described in detail. As Figure 7 、 Figure 8 shown, it includes a spring vibrating loading tray 31 for conveying the fine springs and a spring installation unit for installing the fine springs or the thick springs. The main purpose of the spring vibrating loading tray 31 is to horizontally place the springs one by one. The spring installation unit includes a guide tube 32 for adjusting the fine springs or the thick springs to a vertical state and a spring blanking block 33 arranged below the guide tube 32. The guide tube 32 is connected to the output end of the spring vibrating loading tray 31 through a pipeline. The diameter of the pipeline should be such that only one spring can move in a horizontal state. The guide tube 32 is in a vertical state. In this way, the springs guided by the guide tube 32 will be arranged in a vertical state. The spring blanking block 33 is mainly used to regularize and collect the vertical springs. For this purpose, a spring guide groove 331 is provided on the spring blanking block 33. The spring guide groove 331 penetrates through one end of the spring blanking block 33 away from the station moving mechanism 1. The spring guide groove 331 is arranged below the guide tube 32. In this way, the springs falling from the guide tube 32 will fall into the spring guide groove 331. In order to achieve the arrangement of the springs one by one, in this embodiment, a spring push block 34 is provided in the spring guide groove 331. One end of the spring push block 34 away from the spring blanking block 33 is provided with a spring pushing cylinder 35. In this way, under the action of the spring pushing cylinder 35 and the spring push block 34, the springs are arranged one by one.

[0052] The main purpose of the spring assembly mechanism is to place the spring into the corresponding hole of the wheel carrier. For this purpose, a spring blanking hole is also provided on the spring blanking block 33. The spring blanking hole is communicated with the spring guide groove 331 and is arranged at one end of the spring guide groove 331 away from the spring push block 34. Above the spring blanking hole, a spring pressing rod 36 is provided, and the spring pressing rod 36 is arranged to move up and down above the spring blanking hole. Specifically, the spring pressing rod 36 is connected to the power end of the pressing rod cylinder 37. In this way, under the action of the pressing rod cylinder 37, the spring is pressed into the wheel carrier.

[0053] After installing the thick spring and the thin spring, it is necessary to install the brake part. In order to protect the brake part, a second oil injection mechanism 62 is provided between the brake part assembly mechanism 10 and the thick spring assembly mechanism 15. After injecting oil into the wheel carrier through the second oil injection mechanism 62, the installation of the brake part begins. For this reason, as Figure 9 shown, the brake part assembly mechanism 10 includes a brake part vibrating loading tray 101 for adjusting the brake part to a vertical state and a brake part placing unit for grasping and placing the brake part on the wheel carrier. The structures of the brake part assembly mechanism 10 and the wheel carrier loading mechanism 2 are basically the same. Its brake part placing unit includes a brake part clamping cylinder 102 for clamping the brake part arranged on one side of the station moving mechanism 1, a brake part lifting cylinder 103 for controlling the lifting of the clamping cylinder 22, and a brake part reciprocating cylinder 104 for controlling the reciprocation of the brake part lifting cylinder 103 in the direction of the station 13 and the brake part vibrating loading tray 101. The brake part clamping cylinder 102 is also a finger cylinder, and the brake part reciprocating cylinder 104 is also a rodless cylinder. The working principles of the brake part assembly mechanism 10 and the wheel carrier loading mechanism 2 are the same. For this reason, no more description is given here.

[0054] After installing the brake part, it is necessary to install the wheel axle, as Figure 10 、 Figure 11As shown in the figure, the axle assembly mechanism 4 includes an axle vibrating loading tray 41 for conveying axles and an axle guiding seat 42 arranged at the end of the output end of the axle vibrating loading tray 41. The axle vibrating loading tray 41 is also used to horizontally place and convey the axles, and it is connected to the axle guiding seat 42 through a pipeline. In this embodiment, in order to facilitate the movement of the axle in the axle guiding seat 42, the axle guiding seat 42 is hollow. An axle inlet hole 421 is arranged on one side of the axle guiding seat 42. The axle guiding seat 42 is connected to the output end of the axle vibrating loading tray 41 through the axle inlet hole 421. An axle outlet hole 422 is arranged on the side of the axle guiding seat 42 away from the axle inlet hole 421. The axle outlet hole 422 is arranged at one end of the axle guiding seat 42 away from the axle inlet hole 421, and the axle outlet hole 422 is arranged obliquely below the axle inlet hole 421. In this way, by the action of gravity, the axles entering the axle guiding seat 42 can automatically roll to the position of the axle outlet hole 422. At the same time, a push rod 43 for pushing the axle out of the axle outlet hole 422 is arranged outside the axle guiding seat 42. The push rod 43 is telescopically arranged relative to the axle guiding seat 42. Specifically, a push rod cylinder 44 is arranged at the end of the push rod 43 away from the axle guiding seat 42. Under the action of the push rod cylinder 44, the push rod 43 is pushed. Since the axle hole of the brake part is fixed, and under the action of the spring, it cannot be ensured that the axle can be accurately inserted and partially pass through the brake part. Therefore, as Figure 9 shown, a brake part auxiliary pressing cylinder 105 is also arranged on the back of the brake part reciprocating cylinder 104. The brake part auxiliary pressing cylinder 105 presses the brake part downward at the working station 13 for axle installation to ensure that the axle hole of the brake part is coaxial with the axle. In this way, under the action of the push rod 43, the installation of the axle is completed.

[0055] After the axle is installed, the traveling wheels at both ends of the axle can be installed. Therefore, as Figure 18 、 Figure 19 shown, the traveling wheel assembly mechanism 5 includes a traveling wheel assembly frame 51 arranged above the working station moving mechanism 1. A traveling wheel guiding groove 52 for adjusting the traveling wheel to a vertical state is arranged on the traveling wheel assembly frame 51. The main purpose of the traveling wheel guiding groove 52 is to adjust the horizontally arranged traveling wheels to a vertical state. At the same time, in order to facilitate installation and ensure the lubrication of the traveling wheels, fourth oil injection mechanisms 64 are arranged on both sides of the traveling wheel assembly frame 51. The fourth oil injection mechanisms 64 are used to inject oil into the installation holes of the traveling wheels. For the convenience of oil injection, the cross-section of the traveling wheel guiding groove 52 is arranged in an inverted T shape. Of course, since two traveling wheels on the left and right need to be installed, the traveling wheel guiding grooves 52 are arranged on both sides of the working station 13, that is, on both sides of the traveling wheel assembly frame 51.

[0056] The bottom of the walking wheel guide groove 52 is closed, and at the same time, an assembly hole 521 is provided above the seal, so that the assembly hole 521 can be set coaxially with the walking wheel, and a walking wheel pushing cylinder 54 is provided on the walking wheel assembly frame 51 for pushing the walking wheel onto the wheel axle through the assembly hole 521. In this way, since the bottom of the walking wheel guide groove 52 is on both sides of the work station 13, the installation of the walking wheel is completed under the push of the walking wheel pushing cylinder 54.

[0057] Of course, the horizontal arrangement of the traveling wheels is also inseparable from the vibration plate. For this reason, the traveling wheel assembly mechanism 5 also includes a traveling wheel vibration loading plate 53 for conveying the traveling wheels. The output end of the traveling wheel vibration loading plate 53 is connected to the traveling wheel guide groove 52.

[0058] The installation of the walking wheel is completed, which means that most of the chair wheels are installed. It already has a rolling foundation. Therefore, it needs to be installed to realize the setting of its connection mechanism, and the shaft needs to be installed on the top of the wheel frame. For this purpose, the wheel frame needs to be flipped over, such as Figure 12 , Figure 13 As shown, in this embodiment, the wheel frame flipping mechanism 7 includes a rotating mechanism 71 provided on one side of the workstation moving mechanism 1 and a lifting unit 72 provided on the power end of the rotating mechanism 71. Since the entire mechanism uses a large amount of air source as power, the rotating mechanism 71 also uses air source as power. The rotating mechanism 71 is a pneumatic rotating platform. The lifting unit 72 is connected to the output end of the pneumatic rotating platform. The lifting unit 72 is a cylinder. The wheel frame clamping cylinder 73 is provided at the output end of the lifting unit 72. The wheel frame clamping cylinder 73 is also a finger cylinder. In this way, after clamping the wheel frame, the wheel frame can be flipped under the action of the rotating mechanism 71. However, this structure is based on the situation where the workstation 13 can be placed upside down and placed upright at the same time. In this embodiment, the workstation 13 is divided into two types and the workstation moving mechanism 1 also includes a walking wheel installation workstation moving mechanism 11 and a rotating shaft installation workstation moving mechanism 12. Therefore, a wheel frame auxiliary flipping mechanism 74 is also provided on one side of the walking wheel installation workstation moving mechanism 11. The wheel frame auxiliary flipping mechanism 74 and the wheel frame loader Like structure 2, it includes an auxiliary moving cylinder 741, an auxiliary lifting cylinder 742 and an auxiliary clamping cylinder 743, among which the auxiliary clamping cylinder 743 is used to complete the clamping of multiple wheel frames, the auxiliary lifting cylinder 742 completes the lifting of the wheel frames, and the auxiliary moving cylinder 741 is used to realize the movement between the two stations 13 on the walking wheel installation station moving mechanism 11 and the rotating shaft installation station moving mechanism 12. In this way, the wheel frame auxiliary flipping mechanism 74 and the wheel frame flipping mechanism 7 are used to complete the flipping and transportation of the wheel frame.

[0059] Considering the lubricity of the rotating shaft during use, a third oil injection mechanism 63 is provided in the previous process of the rotating shaft assembly mechanism 8. The third oil injection mechanism 63 is mainly used to inject oil into the rotating shaft hole of the wheel carrier. The structures of the first oil injection mechanism 61, the second oil injection mechanism 62, the third oil injection mechanism 63, and the fourth oil injection mechanism 64 are the same. As Figure 6 shown, the oil injection mechanism 6 includes an oil injection cylinder 65 and an oil injection seat 66 provided at the output end of the oil injection cylinder 65. The main purpose of the oil injection cylinder 65 is to complete the lifting and lowering of the oil injection seat 66. An oil dripping nozzle 67 is provided on the oil injection seat 66. In this way, the lifting and lowering of the oil injection seat 66 can ensure accurate dripping into the corresponding position. Of course, the oil dripping nozzle 67 is connected to an oil dripping pipe 68. To control the amount of oil dripping, a metering valve 69 is provided on the oil dripping pipe 68.

[0060] After the oil injection is completed, the installation of the rotating shaft is required. Therefore, as Figure 14 、 Figure 15 shown, the rotating shaft assembly mechanism 8 includes a rotating shaft vibrating feeding tray 81 for conveying the rotating shaft and a rotating shaft mounting seat 82 provided at the end of the output end of the rotating shaft vibrating feeding tray 81. The rotating shaft vibrating feeding tray 81 is used to horizontally convey the rotating shaft. It should be noted here that in the vibrating feeding tray used in this embodiment, in order not to affect the display of the overall structure and the vibrating feeding tray is an existing mature product, only a simple pattern is used to schematically show its structure. A rotating shaft guiding groove 83 for adjusting the rotating shaft to a vertical state is provided on the rotating shaft mounting seat 82. The rotating shaft guiding groove 83 is formed by two arc-shaped plates arranged at intervals to form a slot hole structure. Since the rotating shaft is horizontally conveyed, when it enters the rotating shaft guiding groove 83, it is top-heavy and completes the vertical setting. The height of the output end of the rotating shaft vibrating feeding tray 81 is higher than the height of the rotating shaft mounting seat 82. In this way, the rotating shaft guiding groove 83 is composed of a horizontal section and an arc-shaped end. Under the rapid descent of the arc-shaped end, the rotating shaft can complete the adjustment of the distance to the completed state. The rotating shaft mounting seat 82 is connected to the rotating shaft vibrating feeding tray 81 through the rotating shaft guiding groove 83. An installation cylinder 84 is provided on the rotating shaft mounting seat 82. The power end of the installation cylinder 84 is provided at the end of the rotating shaft guiding groove 83. A clamping and releasing mechanism 85 for releasing and clamping the rotating shaft is provided at the end of the rotating shaft guiding groove 83. In this way, the clamping and releasing mechanism 85 clamps the rotating shaft at the end of the rotating shaft guiding groove 83. Under the action of the installation cylinder 84, the rotating shaft is released and under the action of the installation cylinder 84, the installation of the rotating shaft is completed.

[0061] In order to quickly realize the release and clamping, this embodiment also specifically provides a clamping and releasing mechanism 85. As Figure 16 、 Figure 17As shown in the figure, the clamping release mechanism 85 includes clamping blocks 851 arranged on both sides of the rotating shaft. The top of the clamping block 851 is pivotally connected to the rotating shaft mounting seat 82. A reset shaft 852 is provided at the bottom of the clamping block 851. The reset shaft 852 passes through the rotating shaft mounting seat 82, and an arc-shaped slot hole 821 for the reset shaft 852 to pass through and slide is provided on the rotating shaft mounting seat 82. A reset spring is provided between the reset shaft 852 and the rotating shaft mounting seat 82. In this way, when the rotating shaft moves downward, the reset spring is compressed. When the mounting cylinder 84 resets, the reset spring resets to complete the clamping of the next rotating shaft. The reset spring can be installed along the moving direction of the arc-shaped slot hole.

[0062] In order to ensure the proper installation of the rotating shaft, a rotating shaft auxiliary pressing mechanism 9 is also provided. The rotating shaft auxiliary pressing mechanism 9 is arranged between the rotating shaft assembling mechanism 8 and the palletizing mechanism 14. The rotating shaft auxiliary pressing mechanism 9 includes a pressing frame 91 arranged on one side of the station moving mechanism 1 and a pressing cylinder 92 arranged on the pressing frame 91. The power end of the pressing cylinder 92 is arranged towards the direction of the station 13. In this way, the secondary pressing ensures the reliability of the rotating shaft installation. The palletizing mechanism 14 has the same structure as the wheel rack feeding mechanism 2. Therefore, no detailed description is given here.

[0063] Through the above settings, the automatic installation of the chair wheels is effectively realized, thereby solving the technical problems of low manual efficiency and potential safety hazards.

[0064] The above is only a preferred embodiment of the present invention, and it is not a limitation of the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. An intelligent assembly production line for the assembly of chair wheels of a learning chair, characterized in that, It includes a station for placing the wheel carrier, a station moving mechanism for moving the station, and a wheel carrier loading mechanism, a first oil injection mechanism for injecting oil into the wheel carrier for the first time, a fine spring assembly mechanism for placing fine springs into the wheel carrier, a thick spring assembly mechanism for placing thick springs into the wheel carrier, a second oil injection mechanism for injecting oil into the wheel carrier for the second time, a brake part assembly mechanism for assembling brake parts into the wheel carrier, a wheel axle assembly mechanism for assembling wheel axles into the wheel carrier, a running wheel assembly mechanism for assembling running wheels onto the wheel carrier, a wheel carrier flipping mechanism for flipping the wheel carrier, a third oil injection mechanism for injecting oil into the wheel carrier for the third time, a rotating shaft assembly mechanism for installing a rotating shaft into the wheel carrier, and a palletizing mechanism for detaching the assembled chair wheel from the station and collecting the assembled wheel carrier, which are arranged in sequence along the station moving direction; both the fine spring assembly mechanism and the thick spring assembly mechanism include a spring vibrating feeder for conveying fine springs or thick springs and a spring installation unit for installing fine springs or thick springs. The spring installation unit includes a guide tube for adjusting the fine springs or thick springs to a vertical state and a spring blanking block arranged below the guide tube. A spring guide groove is arranged on the spring blanking block, and the spring guide groove penetrates through one end of the spring blanking block away from the station moving mechanism. The spring guide groove is arranged below the guide tube. A spring push block is arranged in the spring guide groove, and a spring pushing cylinder is arranged at one end of the spring push block away from the spring blanking block. A spring blanking hole is also arranged on the spring blanking block. The spring blanking hole is communicated with the spring guide groove and is arranged at one end of the spring guide groove away from the spring push block. A spring pressing rod is arranged above the spring blanking hole, and the spring pressing rod is arranged to move up and down above the spring blanking hole; the wheel axle assembly mechanism includes a wheel axle vibrating feeder for conveying wheel axles and a wheel axle guide seat arranged at the end of the output end of the wheel axle vibrating feeder. The wheel axle guide seat is hollow, and a wheel axle inlet hole is arranged on one side of the wheel axle guide seat. The wheel axle guide seat is communicated with the output end of the wheel axle vibrating feeder through the wheel axle inlet hole. A wheel axle outlet hole is arranged on the side of the wheel axle guide seat away from the wheel axle inlet hole. The wheel axle outlet hole is arranged at one end of the wheel axle guide seat away from the wheel axle inlet hole, and the wheel axle outlet hole is arranged diagonally below the wheel axle inlet hole. A push rod for pushing the wheel axle out of the wheel axle outlet hole is also arranged outside the wheel axle guide seat, and the push rod is arranged to telescopically move relative to the wheel axle guide seat; the running wheel assembly mechanism includes a running wheel assembly frame arranged above the station moving mechanism. A running wheel guide groove for adjusting the running wheels to a vertical state is arranged on the running wheel assembly frame. The running wheel guide groove is arranged on both sides of the station, and an assembly hole is arranged at the bottom of the running wheel guide groove. A running wheel pushing cylinder for passing through the assembly hole to push the running wheels onto the wheel axle is arranged on the running wheel assembly frame. The running wheel assembly mechanism also includes a running wheel vibrating feeder for conveying running wheels, and the output end of the running wheel vibrating feeder is communicated with the running wheel guide groove;The shaft assembly mechanism includes a shaft vibrating loading tray for conveying shafts and a shaft mounting seat arranged at the end of the output end of the shaft vibrating loading tray. A shaft guiding groove for adjusting the shaft to a vertical state is arranged on the shaft mounting seat. The shaft mounting seat is communicated with the shaft vibrating loading tray through the shaft guiding groove. An installation cylinder is arranged on the shaft mounting seat, and the power end of the installation cylinder is arranged at the end of the shaft guiding groove. A clamping and releasing mechanism for releasing and clamping the shaft is arranged at the end of the shaft guiding groove. The brake part assembly mechanism includes a brake part vibrating loading tray for adjusting the brake part to a vertical state and a brake part placing unit for grasping and placing the brake part on the wheel carrier. The brake part placing unit includes a brake part clamping cylinder arranged on one side of the station moving mechanism for clamping the brake part, a brake part lifting cylinder for controlling the lifting of the clamping cylinder, and a brake part reciprocating cylinder for controlling the reciprocating movement of the brake part lifting cylinder in the directions of the station and the brake part vibrating loading tray.; 2. The intelligent assembly production line for the chair wheel assembly of a learning chair according to claim 1, wherein The wheel carrier loading mechanism includes a wheel carrier vibrating loading tray for conveying the wheel carrier in an inverted manner and a wheel carrier placing unit for grasping and placing the wheel carrier on the working station. Among them, the wheel carrier placing unit includes a clamping cylinder for clamping the wheel carrier arranged on one side of the working station moving mechanism, a wheel carrier lifting cylinder for controlling the lifting of the clamping cylinder, and a wheel carrier reciprocating cylinder for controlling the reciprocation of the wheel carrier lifting cylinder in the directions of the working station and the wheel carrier vibrating loading tray.

3. The intelligent assembly production line for the chair wheel assembly of the learning chair according to claim 2, characterized in that, A fourth oil injection mechanism for injecting oil into the traveling wheel is further arranged on the traveling wheel assembly rack.

4. The intelligent assembly production line for the chair wheels assembly of the learning chair according to claim 3, wherein, The first oil injection mechanism, the second oil injection mechanism, the third oil injection mechanism, and the fourth oil injection mechanism all include an oil injection cylinder and an oil injection seat arranged at the output end of the oil injection cylinder. An oil dripping nozzle is arranged on the oil injection seat, an oil dripping pipe is communicated with the oil dripping nozzle, and a metering valve is arranged on the oil dripping pipe.

5. The intelligent assembly production line for the chair wheel assembly of the learning chair according to claim 1, characterized in that, The wheel carrier flipping mechanism includes a rotating mechanism arranged on one side of the working station moving mechanism and a lifting unit arranged at the power end of the rotating mechanism. A wheel carrier clamping cylinder is arranged at the output end of the lifting unit.

6. The intelligent assembly production line for the chair wheel assembly of a learning chair according to claim 5, characterized in that, The clamping release mechanism includes clamping blocks arranged on both sides of the rotating shaft. The top of the clamping block is pivotally connected to the rotating shaft mounting seat. A reset shaft is arranged at the bottom of the clamping block. The reset shaft penetrates through the rotating shaft mounting seat. An arc-shaped slot hole for the reset shaft to pass through and slide is arranged on the rotating shaft mounting seat. A reset spring is arranged between the reset shaft and the rotating shaft mounting seat.

7. The intelligent assembly production line for the chair wheel assembly of the learning chair according to claim 6, characterized in that, A rotating shaft auxiliary pressing mechanism is further arranged between the rotating shaft assembling mechanism and the palletizing mechanism. The rotating shaft auxiliary pressing mechanism includes a pressing frame arranged on one side of the working station moving mechanism and a pressing cylinder arranged on the pressing frame. The power end of the pressing cylinder faces the working station direction.

8. The intelligent assembly production line for the chair wheel assembly of a learning chair according to claim 1, characterized in that, The working station moving mechanism is a turntable type working station moving mechanism.

9. The intelligent assembly production line for the chair wheel assembly of a learning chair according to claim 8, characterized in that, The working station moving mechanism includes a traveling wheel installation working station moving mechanism and a rotating shaft installation working station moving mechanism. Among them, the wheel carrier loading mechanism, the first oil injection mechanism, the fine spring assembling mechanism, the coarse spring assembling mechanism, the second oil injection mechanism, the brake part assembling mechanism, the wheel axle assembling mechanism, and the traveling wheel assembling mechanism are arranged around the traveling wheel installation working station moving mechanism.

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