Magnet separation press-fitting mechanism

Abstract

This invention provides a magnet separation and pressing mechanism, characterized in that: a lower support plate is fixed on the frame, and an upper turntable is fixed on the motor shaft of a motor fixed on the frame; the upper turntable is located above the lower support plate; several magnet receiving through holes are evenly distributed around the circumference of the upper turntable; a vertical magnet supply channel is fixed on the frame, and magnets are stacked in the vertical holes of the magnet supply channel; the vertical holes are located above the circumference of the magnet receiving through holes; a pressing cylinder is fixed on the frame, the lower end of the pressing cylinder is located above the circumference of the magnet receiving through holes, and a magnet dropping through hole is opened on the lower support plate below the pressing cylinder; a gear conveyor belt is also provided on the frame; the gear receiving groove on the gear conveyor block is aligned with the output end of the gear conveyor belt, the output rotating component is located in the receiving groove of the pushing gear, and the concave hole above the output rotating component is located below the magnet dropping through hole. This invention automates the operation of installing magnets into the concave hole at the top of the rotating component.

Description

Technical Field

[0001] This invention relates to the field of gear mounting, and more specifically to a mechanism for mounting magnets on gears. Background Technology

[0002] like Figure 1 , Figure 2 The electronic limit switch 1' for the roller shutter door is shown.

[0003] A first gear shaft hole 111' is provided on the bottom surface of the housing 11'. The input rotating component 12' passes through the first gear shaft hole 111'. The partition 123' in the middle of the input rotating component 12' is rotatably mounted at the position of the first gear shaft hole 111'. The external hook 121' at the bottom of the input rotating component 12' extends out of the first gear shaft hole 111' and is fixedly connected to the external gear 10' located outside the housing 11'. The first stage gear 122' at the top of the input rotating component 12' is located inside the housing 11'. A second gear shaft hole 112' and a third gear shaft hole 113' are also provided on the bottom surface of the housing 11'. The housing 11' has four vertical fixing blocks 114' with vertical fixing holes inside.

[0004] A second gear shaft 1121' is fixedly inserted into the second gear shaft hole 112', and a third gear shaft 1131' is fixedly inserted into the third gear shaft hole 113'.

[0005] A second-stage double gear 13' is rotatably mounted on the second gear shaft 1121'. The second-stage double gear 13' consists of a coaxial lower large gear 131' and an upper small gear 132'. Above the second-stage double gear 13', there is an output rotating component 15' rotatably mounted on the second gear shaft 1121'. The output rotating component 15' consists of a lower large gear 151' and an upper recess 152'. A magnet 16' is embedded in the recess 152'.

[0006] The third gear shaft 1131' is rotatably fitted with a third-stage double gear 14', which consists of a lower large gear 141' and an upper small gear 142' on the same axis.

[0007] After assembly, the first-stage gear 122' on the input rotating component 12' meshes with the lower large gear 131' of the second-stage double gear 13', the upper small gear 132' of the second-stage double gear 13' meshes with the lower large gear 141' of the third-stage double gear 14', and the upper small gear 142' of the third-stage double gear 14' meshes with the lower large gear 151' of the output rotating component 15'.

[0008] A partition 17' is located in the middle of the housing 11'. The partition 17' has four vertical through-hole posts 1711'. The four vertical through-hole posts 1711' are located at the four vertices of a rectangle. There are two through-hole posts 1711' on each side of the partition 17'. The inner surface of the through-hole posts 1711' is an arc surface 1712'. Each through-hole post 1711' has a through hole 171'. Four self-tapping screws pass through the through holes 171' and are screwed into the fixing holes of the fixing block 114' to fix the partition 17' inside the housing 11'. The aforementioned gear shaft and gear are located below the partition 17'.

[0009] The partition 17' has a through hole 172', and the position of the magnet 16' corresponds to the position of the through hole 172'.

[0010] A circuit board 18' is placed on the partition 17', and the socket 181' of the circuit board 18' extends out of the notch 115' on the housing 11'.

[0011] The upper opening of the housing 11' is covered by the rear cover 19', and ultrasonic heating is used to bond the housing 11' and the rear cover 19' together to form a roller shutter door electronic limiter 1'.

[0012] The housing 11', gear shaft, gear, and rear cover 19' are all plastic parts.

[0013] In actual use:

[0014] The movement of the roller shutter door is converted into the rotation of the external gear 10'. This rotation is transmitted through the external gear 10' fixed to the input rotating component 12', the first-stage gear 122' on the input rotating component 12', the lower large gear 131' of the second-stage double gear 13', the upper small gear 132' of the second-stage double gear 13', the lower large gear 141' of the third-stage double gear 14', the upper small gear 142' of the third-stage double gear 14', the lower large gear 151' of the output rotating component 15', and the magnet 16' embedded in the output rotating component 15'. This transmission chain ultimately converts the rotation of the magnet 16' into the rotation of the magnet 16'. The circuit board 18' senses the rotation angle of the magnet 16', and the converted electrical signal is transmitted to the external processor through the line connected to the socket 181'. This allows the processor to determine the rotation position of the roller shutter door and control the roller shutter door motor in real time.

[0015] During the manufacturing process of the aforementioned electronic limit switch 1' for roller shutter doors:

[0016] The output rotating part 15' consists of a large gear 151' below and a recess 152' above. A magnet 16' needs to be securely embedded in the recess 152'. If operated manually, the efficiency is low and the quality is unstable. Summary of the Invention

[0017] The present invention provides a magnet separation and pressing mechanism, the purpose of which is to overcome the shortcomings of the prior art, automate the operation of installing magnets into the concave hole on the top of the rotating part, and improve efficiency and quality stability.

[0018] The technical solution adopted by this invention to solve its technical problem is:

[0019] The magnet separation and pressing mechanism is characterized by:

[0020] A lower support plate is fixed on the frame, and an upper turntable is fixed on the motor shaft of a motor fixed on the frame; the upper turntable is located above the lower support plate.

[0021] Several magnet accommodating holes are evenly distributed around the circumference of the upper turntable;

[0022] A vertical magnet supply channel is fixed on the frame, and magnets are stacked in the vertical holes of the magnet supply channel;

[0023] The vertical hole of the magnet supply channel is located above the circumference of the magnet receiving through hole;

[0024] A vertical pressing cylinder is fixed on the frame. The lower end of the pressing cylinder is located above the circumference where the magnet receiving through hole is located. A magnet dropping through hole is opened on the lower support plate below the pressing cylinder.

[0025] The frame is also equipped with a gear conveyor belt, and the output rotating parts inside the gear conveyor belt are driven by a push mechanism;

[0026] The gear receiving groove on the gear conveyor block is aligned with the output end of the gear conveyor belt. An output rotating component is located in the receiving groove of the propulsion gear, and the concave hole above the output rotating component is located below the magnet drop through hole.

[0027] The aforementioned motor, pressure cylinder, and gear conveyor belt are all connected to and controlled by the control computer.

[0028] Two vertical magnet supply channels are fixed on the frame, and magnets are stacked in the vertical holes of the two magnet supply channels; the vertical holes of the two magnet supply channels are located on the circumference of the magnet receiving through hole.

[0029] A positioning gear plate is fixed on the motor shaft. The positioning gear plate has teeth evenly distributed around the circumference, the same number as the number of through holes for accommodating the magnet. A photoelectric sensor is fixed on the frame. The teeth of the positioning gear plate pass through the photoelectric sensor and can cut off the light from the photoelectric sensor. The photoelectric sensor is connected to and controlled by the control computer.

[0030] A pressure sensor is installed on the lowering cylinder to sense the pressure at the end of the lowering cylinder. The pressure sensor is connected to and controlled by the control computer.

[0031] The advantages of this invention are:

[0032] This invention utilizes a vertical magnet supply channel to allow the magnets to descend by their own weight, cooperating with an upper turntable to achieve magnet-separated intermittent feeding. A lower support plate supports the magnets, transporting them to the pressing hole position on the lower support plate. A pressing cylinder presses the magnets into the recessed hole at the top of the rotating component. A pressure sensor ensures the quality of pressing, while a positioning gear and photoelectric sensor ensure the accuracy of positioning. Moreover, the entire process can be automatically operated without the need for skilled personnel. Attached Figure Description

[0033] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0034] Figure 1 An exploded 3D view of the electronic limiter;

[0035] Figure 2 This is an external view of the electronic limit switch;

[0036] Figure 3 This is a perspective view of the invention from left to right.

[0037] Figure 4 yes Figure 3 Enlarged view of part A;

[0038] Figure 5 This is a perspective view of the invention from right to left.

[0039] Figure 6 for Figure 5 Enlarged view of part B. Detailed Implementation

[0040] To more clearly illustrate the technical solution of the present invention, the accompanying drawings used in the description will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other embodiments can be obtained based on these drawings without creative effort.

[0041] like Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown:

[0042] In this invention, a lower support plate 2 is fixed on a frame 1, and an upper turntable 31 and a positioning gear plate 33 are fixed on the motor shaft 3 of a motor (not shown in the figure, the motor can be a stepper rotary motor) fixed on the frame 1. The upper turntable 31 is located above the lower support plate 2.

[0043] The upper turntable 31 has 8 magnet receiving holes 32 evenly distributed around its circumference.

[0044] The positioning toothed disc 33 has eight circumferentially distributed teeth, the same number as the magnet receiving through hole 32.

[0045] A photoelectric sensor 34 is fixed on the frame 1. The teeth of the positioning gear 3 pass through the photoelectric sensor 34 and can cut off the light of the photoelectric sensor 34.

[0046] Two vertical magnet supply channels 41 and 42 are fixed on the frame 1, and magnets 16' are stacked in the vertical holes of each of the magnet supply channels 41 and 42.

[0047] The vertical holes of magnet supply channels 41 and 42 are located above the circumference of the eight magnet receiving through holes 32.

[0048] A vertical pressing cylinder 5 is fixed on the frame 1. The lower end of the pressing cylinder 5 is located above the circumference where the eight magnet receiving holes 32 are located. A magnet dropping hole is opened on the lower support plate 2 below the lower end of the pressing cylinder 5 (not shown in the figure, it is blocked by the upper turntable 31).

[0049] The frame 1 is also equipped with a gear conveyor belt 81. The output rotating part 15' in the gear conveyor belt 81 is pushed by the pushing mechanism towards the assembly workbench (not shown in the figure, the side of the frame 1 is the assembly workbench, on which the conveyed housing 11' is placed).

[0050] A gear receiving groove 84 on a gear conveying block 83 is aligned with the output end of the gear conveyor belt 81. The gear receiving groove 84 is located below the magnet drop-out through hole opened on the lower support plate 2, that is, below the lower end of the pressure cylinder 5.

[0051] An output rotating element 15' is pushed into the gear receiving groove 84, such that the recess 152' above the output rotating element 15' is located below the magnet drop through hole, that is, below the lower end of the pressing cylinder 5.

[0052] A pressure sensor (not shown in the figure) is installed on the pressing cylinder 5 to sense the pressure at the end of the pressing cylinder 5.

[0053] The aforementioned motor, photoelectric sensor 34, pressing cylinder 5, pressure sensor, and gear conveyor belt 81 are all connected to and controlled by the control computer.

[0054] The frame 1 has a three-jaw positioning gripping block mechanism 69, which is existing technology. The three jaws can open and close to grip the cylinder and move it to the required position before putting it down.

[0055] A cylinder 82 is also fixed on the frame 1. The cylinder 82 pushes the gear conveyor block 83 to move horizontally on the slide rail 85 on the frame 1. The direction of movement is perpendicular to the gear conveyor belt 81.

[0056] The three-claw positioning and gripping block mechanism 69 and the cylinder 82 are also connected to and controlled by the control computer.

[0057] In actual operation:

[0058] When the motor shaft 3 rotates, the upper turntable 31 rotates, and an empty magnet receiving through hole 32 rotates to the bottom of the magnet supply channel 41. The magnet 16' located at the bottom of the magnet supply channel 41 falls into the magnet supply channel 41 due to gravity.

[0059] Before the magnet 16' is turned to the magnet drop hole opened on the lower support plate 2, it is supported by the lower support plate 2 and will not fall down. It will be accommodated in the magnet accommodating hole 32 and rotate together with the upper turntable 31.

[0060] The upper turntable 31 rotates again, and the magnet receiving through hole 32 containing the magnet 16' moves to the bottom of the magnet supply channel 42. The magnet 16' at the bottom of the magnet supply channel 42 cannot fall into the magnet receiving through hole 32 that already contains the magnet 16'.

[0061] The upper turntable 31 in the figure rotates two more times, and the magnet receiving through hole 32 containing the magnet 16' moves to the bottom of the pressing cylinder 5. The magnet 16' falls from the magnet drop through hole on the lower support plate 2 into the lower recess 152'. The pressing cylinder 5 presses down to press the magnet 16' into the recess 152'.

[0062] Because magnet 16' is tightly fitted into recess 152' to prevent it from falling out, if the pressure sensor senses too little pressure, it means the gap between magnet 16' and recess 152' is too large, and the pressing cylinder 5 too easily presses magnet 16' into recess 152', indicating that the magnet 16' and recess 152' may not be tightly connected and need to be checked. If the pressure sensor senses too much pressure, it means that magnet 16' may have a diameter larger than recess 152' or be misaligned, causing it to get stuck at the upper edge of recess 152' and cannot be pressed down further. In this case, the machine should be stopped to avoid an accident.

[0063] The motor can be a stepper motor, which controls the upper turntable 31 to rotate one grid at a time, and the lower cylinder 5 presses down in a timely manner, and the gear conveyor belt 81 conveys the rotating part 15' in a timely manner.

[0064] In this embodiment, since the positioning toothed disk 33 has 8 circumferentially distributed teeth, the same number as the magnet accommodating through hole 32, the teeth of the positioning toothed disk 33 pass through the photoelectric sensor 34 and can cut off the light of the photoelectric sensor 34. Therefore, the positioning toothed disk 3 will cut off the light of the photoelectric sensor 34 once every 1 / 8 revolution. Cutting off the light of the photoelectric sensor 34 sends a signal to the control computer, causing the motor to stop, the upper turntable 31 to stop, and the lower cylinder 5 to press down to complete one operation. After the time is up, the motor starts to rotate again, and so on.

[0065] The cylinder 82 then pushes the gear conveyor block 83 in the opposite direction to move horizontally on the slide rail 85 on the frame 1. The output rotating component 15', which has the magnet 16' pressed in the concave hole 152', is sent to the right below the three-jaw positioning gripping block mechanism 69. The other output rotating components 15' on the gear conveyor belt 81 are waiting for the next push.

[0066] The three-jaw positioning and gripping block mechanism 69 grips the output rotating component 15' from the gear receiving slot 84 and removes the housing 11' from the assembly workbench for installation.

[0067] The cylinder 82 then pushes the gear conveying block 83, which no longer has the output rotating part 15' in the gear receiving groove 84, to move horizontally on the slide rail 85 on the frame 1, and move it to the gear receiving groove 84 aligned with the output end of the gear conveyor belt 81, that is, the gear receiving groove 84 is located below the magnet drop hole (that is, below the lower end of the pressing cylinder 5).

[0068] The two magnet supply channels 41 and 42 are for backup. During operation, the magnet 16' in magnet supply channel 41 first falls into the empty magnet receiving through hole 32. When there is no magnet 16' in magnet supply channel 41, the empty magnet receiving through hole 32 rotates to the bottom of magnet supply channel 42, and the magnet 16' in magnet supply channel 42 falls into the empty magnet receiving through hole 32. This provides a buffer time for the operator to load magnet 16' into the empty magnet supply channel 41 or magnet supply channel 42, preventing the magnet receiving through hole 32 from being empty and ending up below the pressing cylinder 5. As a result, the unmagnetic 16' is pressed into the concave hole 152' above the output rotating component 15', causing the unqualified output rotating component 15' without a magnet in the concave hole 152' to be sent to the housing 11' to produce a defective product. This reduces the workload of the operator and improves the product qualification rate.

[0069] Computer control is an existing technology used to coordinate the sequential and conditional operation of individual components.

[0070] The various embodiments described in this specification are presented in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A magnet separation and pressing mechanism, characterized in that: A lower support plate is fixed on the frame, and an upper turntable is fixed on the motor shaft of a motor fixed on the frame; the upper turntable is located above the lower support plate. Several magnet accommodating holes are evenly distributed around the circumference of the upper turntable; A vertical magnet supply channel is fixed on the frame, and magnets are stacked in the vertical holes of the magnet supply channel; The vertical hole of the magnet supply channel is located above the circumference of the magnet receiving through hole; A vertical pressing cylinder is fixed on the frame. The lower end of the pressing cylinder is located above the circumference where the magnet receiving through hole is located. A magnet dropping through hole is opened on the lower support plate below the pressing cylinder. The frame is also equipped with a gear conveyor belt, and the output rotating parts inside the gear conveyor belt are driven by a push mechanism; The gear receiving groove on the gear conveyor block is aligned with the output end of the gear conveyor belt. An output rotating component is located in the receiving groove of the propulsion gear, and the concave hole above the output rotating component is located below the magnet drop through hole. The aforementioned motor, pressure cylinder, and gear conveyor belt are all connected to and controlled by the control computer. Two vertical magnet supply channels are fixed on the frame, and magnets are stacked in the vertical holes of each of the two magnet supply channels; the vertical holes of each of the two magnet supply channels are located on the circumference of the magnet receiving through hole. A positioning gear plate is fixed on the motor shaft. The positioning gear plate has teeth evenly distributed around the circumference, the same number as the number of through holes for accommodating the magnet. A photoelectric sensor is fixed on the frame. The teeth of the positioning gear plate pass through the photoelectric sensor and can cut off the light from the photoelectric sensor. The photoelectric sensor is connected to and controlled by the control computer.

2. The magnet separation press-fit mechanism of claim 1, wherein: A pressure sensor is installed on the lowering cylinder to sense the pressure at the end of the lowering cylinder. The pressure sensor is connected to and controlled by the control computer.

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