Plastic gear assembly mechanism

Abstract

The present invention provides a plastic gear assembly mechanism, characterized in that: a cylinder for driving a horizontal fixing frame to move horizontally is installed on the frame, a cylinder for driving a first vertical fixing frame to move vertically is fixed on the horizontal fixing frame; the first vertical fixing frame extends horizontally out of a first vertical fixing frame horizontal plate; a through hole is provided on the first vertical fixing frame horizontal plate, a hollow sleeve coaxial with the through hole is fixedly connected to the lower surface of the first vertical fixing frame horizontal plate, and an oblique through slot is provided on the side wall of the sleeve; the vertical shaft rotatably passes through the sleeve and the through hole; a pin extending from the vertical shaft passes through the oblique through slot; a lower spring is sleeved on the small diameter portion, the lower spring is located in the sleeve, the lower end of the lower spring abuts against the top end surface of the middle diameter portion, and the upper end of the lower spring abuts against the lower surface of the first vertical fixing frame horizontal plate; an upper spring is sleeved on the small diameter portion; a grabbing mechanism is fixedly connected to the bottom end of the vertical shaft. The present invention prevents the gear installed later from interfering with the gear installed earlier, thereby improving work efficiency.

Description

Technical Field

[0001] The invention relates to the field of gear installation, in particular to a mechanism for installing plastic gears. Background Art

[0002] At present, when installing the gear, the existing gear installation tool needs to be manually observed by naked eyes to rotate the gear for positioning after the previous gear is installed, and then the next installation is carried out to avoid interference between the teeth of the next gear and the previously installed gear. This method has low manual efficiency and is difficult to improve production capacity.

[0003] A Chinese patent with the patent publication number CN203316783U discloses a gear installation tool, including a support seat and a three-claw positioning block arranged on the support seat. The three-claw positioning block can be inserted into the shaft hole of the gear for fixing the gear, and the three-claw positioning block has equal division marks for making the installation symmetrical and evenly distributed. During operation, first make an equal division table on the three-claw positioning block and insert the gear into one-third of the thickness of the positioning block during installation. After installation once, rotate the gear according to the equal division mark on the three-claw positioning block, and then proceed to the next installation. The above-mentioned gear installation tool uses the equal division marks made on the three-claw positioning block to locate the rotation angle of the gear, but each time the gear is installed, it needs to be re-marked. This method not only wastes time, but also is very troublesome for some unskilled operators.

[0004] For example:

[0005] like Figure 1 , Figure 2 The electronic limiter 1' for rolling door is shown.

[0006] A first gear shaft hole 111' is provided on the bottom surface of the housing 11', and the input rotating member 12' passes through the first gear shaft hole 111'. A partition plate 123' in the middle of the input rotating member 12' is rotatably mounted at the first gear shaft hole 111'. An outer hook 121' at the lower portion of the input rotating member 12' extends out of the first gear shaft hole 111' and is fixedly connected to an outer gear 10' located outside the housing 11'. A first-stage gear 122' at the upper portion of the input rotating member 12' is located in the housing 11'. A second gear shaft hole 112' and a third gear shaft hole 113' are further provided on the bottom surface of the housing 11'. Four upright fixing blocks 114' with vertical fixing holes are provided in the housing 11'.

[0007] The second gear shaft hole 112 ′ is fixedly inserted with a second gear shaft 1121 ′, and the third gear shaft hole 113 ′ is fixedly inserted with a third gear shaft 1131 ′.

[0008] 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'. An output rotating member 15' is rotatably mounted on the second gear shaft 1121' above the second-stage double gear 13'. The output rotating member 15' consists of a lower large gear 151' and an upper recessed hole 152'. A magnet 16' is embedded in the recessed hole 152'.

[0009] The third gear shaft 1131' is rotatably sleeved with a third-stage double gear 14', and the third-stage double gear 14' consists of a coaxial lower large gear 141' and an upper small gear 142'.

[0010] After assembly, the first-stage gear 122' on the input rotating member 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 member 15'.

[0011] A partition 17' is provided in the middle of the housing 11', and has four through holes 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' in the housing 11', and the above-mentioned gear shaft and gear are located below the partition 17'.

[0012] The partition plate 17 ′ has a through hole 172 ′, and the position of the magnet 16 ′ corresponds to the position of the through hole 172 ′.

[0013] The 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 ′.

[0014] The upper opening of the housing 11' is covered with a rear cover 19', and ultrasonic heating is used to bond the housing 11' and the rear cover 19' to form an electronic limiter 1' for rolling shutter doors.

[0015] The above housing 11 ′, gear shaft, gear, and rear cover 19 ′ are all plastic parts.

[0016] In actual use:

[0017] The movement of the rolling door is converted into the rotation of the external gear 10', which passes through the external gear 10' fixed on the input rotating member 12', the first-stage gear 122' on the input rotating member 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 member 15', and the magnet 16' embedded in the output rotating member 15'. Such a transmission chain is finally converted into the rotation of the magnet 16', and the circuit board 18' senses the rotation angle of the magnet 16', and the converted electrical signal is transmitted to the external processor for processing through the line connected to the socket 181', so as to know the rotation position of the rolling door and control the rolling door motor in real time.

[0018] In the manufacturing process of the above-mentioned rolling door electronic limiter 1:

[0019] 1: After installing the input rotating member 12', install the second-stage double gear 13' on the second gear shaft 1121', so that the lower large gear 131' of the second-stage double gear 13' is meshed with the first-stage gear 122' on the input rotating member 12'; 2: Install the third-stage double gear 14' on the third gear shaft 1131', so that the lower large gear 141' of the third-stage double gear 14' is meshed with the upper small gear 132' of the previously installed second-stage double gear 13'; 3: Install the output rotating member 15' on the second gear shaft 1121', so that the lower large gear 151' of the output rotating member 15' is meshed with the upper small gear 142' of the previously installed third-stage double gear 14'.

[0020] All three of the above operations require that the teeth of the next gear be prevented from interfering with the previously installed gear when the next gear is installed. Summary of the invention

[0021] The invention provides a plastic gear assembly mechanism, which aims to solve the disadvantages of the prior art, so that the gear installed later can achieve self-positioning and avoid interference with the teeth of the gear installed earlier, thereby improving work efficiency.

[0022] The technical solution adopted by the present invention to solve the technical problem is:

[0023] Plastic gear assembly mechanism, characterized by:

[0024] A cylinder for driving the horizontal fixing frame to move horizontally is installed on the frame, and a cylinder for driving the first vertical fixing frame to move vertically is fixed on the horizontal fixing frame;

[0025] The first vertical fixing frame extends laterally out of the first vertical fixing frame cross plate;

[0026] A through hole is provided on the horizontal plate of the first vertical fixing frame, a hollow sleeve coaxial with the through hole is fixedly connected to the lower surface of the horizontal plate of the first vertical fixing frame, and an oblique through groove is provided on the side wall of the sleeve;

[0027] A vertical shaft having a middle diameter portion and a small diameter portion rotatably passes through the sleeve and the through hole;

[0028] A pin extending from the vertical shaft passes through the oblique through slot, and the pin can slide in the oblique through slot;

[0029] A lower spring is sleeved on the small diameter portion, the lower spring is located in the sleeve, the lower end of the lower spring abuts against the top end surface of the medium diameter portion, and the upper end of the lower spring abuts against the lower surface of the horizontal plate of the first vertical fixing frame;

[0030] An upper spring is sleeved on the small diameter portion, the lower end of the upper spring abuts against the upper surface of the horizontal plate of the first vertical fixing frame, and the upper end of the upper spring abuts against the convex wall provided on the small diameter portion;

[0031] The bottom end of the vertical shaft is fixedly connected with a grabbing mechanism.

[0032] The grabbing mechanism is a three-claw positioning grabbing block mechanism.

[0033] The threaded portion arranged at the top end of the small diameter portion is sleeved with a pre-tightening nut as a convex wall, and the upper end of the upper spring abuts against the lower surface of the washer.

[0034] A second vertical fixing frame is slidably embedded in a slide rail fixed on the first vertical fixing frame; the second vertical fixing frame extends laterally out of a second vertical fixing frame cross plate; a bearing is fixed in a through hole provided on the cross plate of the second vertical fixing frame; a large diameter portion is provided at the lower end of the middle diameter portion of the vertical shaft, the middle diameter portion of the vertical shaft passes through the bearing and cooperates with the inner ring of the bearing; the top end surface of the large diameter portion is located below the inner ring of the bearing, and a clamp clamped in the annular groove on the middle diameter portion is located above the inner ring of the bearing to clamp the bearing.

[0035] The frame is also provided with a gear conveyor belt, in which gears are placed. The frame is also fixed with a cylinder for pushing the gear conveyor block to move horizontally on the slide rail on the frame. The movement direction of the gear conveyor block is perpendicular to the gear conveyor belt, and the gear conveyor block is provided with a gear accommodating groove.

[0036] Sensors are installed on the frame to respectively sense the moving distances of the horizontal fixing frame, the first vertical fixing frame, the second vertical fixing frame, and the gear conveying block. The sensors are connected to the processor, and the processor is connected to the cylinder that controls and drives the horizontal fixing frame, the first vertical fixing frame, the second vertical fixing frame, and the gear conveying block.

[0037] The present invention is beneficial in that:

[0038] The present invention uses the rotating action when installing the gears to enable the gears installed later to achieve self-positioning and avoid interference with the teeth of the gears installed earlier. There is no jamming with the teeth of the gears installed earlier, and the teeth mesh perfectly, thereby achieving automated assembly of the gears. The rotation angle meets the gear meshing requirements, which is more convenient than marking and saves marking time, thereby shortening the rotation positioning time of the gears. Moreover, the above-mentioned entire process can be automatically operated without the need for skilled operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0040] Figure 1 This is a three-dimensional exploded view of the electronic limiter;

[0041] Figure 2 This is the appearance diagram of the electronic limiter;

[0042] Figure 3 It is a stereogram of the present invention;

[0043] Figure 4 It is a partial stereogram of the present invention;

[0044] Figure 5 It is a side view of the present invention;

[0045] Figure 6 It is a three-dimensional exploded view of the present invention;

[0046] Figure 7 for Figure 6 A magnified view of part A;

[0047] Figure 8 for Figure 7 Assembly diagram of components. DETAILED DESCRIPTION

[0048] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other embodiments can be obtained based on these drawings without paying creative work.

[0049] like Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 As shown:

[0050] Figure 8 The first vertical fixing frame transverse plate 4 and the second vertical fixing frame transverse plate 5 are missing.

[0051] In the present invention, a cylinder 21 is installed at the top of the frame 1. The cylinder 21 is connected to and drives the horizontal fixing frame 3 to move horizontally through a cylinder transmission mechanism 22. The cylinder 23 fixed on the horizontal fixing frame 3 is connected to and drives the first vertical fixing frame 4 to move vertically. The first vertical fixing frame 4 can be slidably embedded in a slide rail (not shown in the figure) fixed on the horizontal fixing frame 3.

[0052] The second vertical fixing frame 5 is slidably embedded on the slide rail 40 fixed on the first vertical fixing frame 4 .

[0053] The first vertical fixing frame 4 extends laterally to a first vertical fixing frame transverse plate 41 , and the second vertical fixing frame 5 extends laterally to a second vertical fixing frame transverse plate 51 .

[0054] A through hole 42 is provided on the first vertical fixing frame cross plate 41, and a hollow sleeve 43 coaxial with the through hole 42 is fixedly connected to the lower surface of the first vertical fixing frame cross plate 4. An oblique through groove 44 is provided on the side wall of the sleeve 43, and one end of the oblique through groove 44 is higher than the other end.

[0055] A bearing 53 is fixedly disposed in the through hole 52 disposed on the second vertical fixing frame cross plate 51 .

[0056] A three-step vertical shaft 6 consisting of a large diameter portion 61 , a middle diameter portion 62 , and a small diameter portion 63 passes through the bearing 6 and rotatably passes through the sleeve 43 and the through hole 42 .

[0057] The middle diameter portion 62 of the vertical shaft 6 cooperates with the inner ring of the bearing 53, and the top end surface of the large diameter portion 61 and the clamp 622 clamped in the annular groove 621 on the middle diameter portion 62 are respectively located below and above the inner ring of the bearing 53 to clamp the bearing 53.

[0058] A screw 623 serving as a pin passes through the oblique through slot 44 and is screwed into a screw hole 620 provided on the middle diameter portion 62 to be fixedly connected to the vertical shaft 6 . The screw 623 can slide in the oblique through slot 44 .

[0059] A lower spring 71 is sleeved on the small diameter portion 63 and is located in the sleeve 43 . The lower end of the lower spring 71 abuts against the top end surface of the medium diameter portion 62 , and the upper end of the lower spring 71 abuts against the lower surface of the first vertical fixing frame cross plate 41 .

[0060] The upper spring 72 is sleeved on the small diameter portion 63, and the threaded portion provided at the top of the small diameter portion 63 is sleeved with a washer 64 and a pre-tightening nut 65 is screwed on. The lower end of the upper spring 72 abuts against the upper surface 41 of the cross plate of the first vertical fixing frame, and the upper end of the upper spring 72 abuts against the lower surface of the washer 64.

[0061] A three-claw positioning grab block mechanism 69 is fixedly connected to the bottom end of the large diameter portion 61 of the vertical shaft 6. The three-claw positioning grab block mechanism 69 is a prior art, and the three claws can be opened and closed to grab the cylinder.

[0062] In this way, in the initial position, the lower spring 71 presses against the middle diameter portion 62 of the vertical shaft 6 and presses the vertical shaft 6 downward, the screw 623 is pressed at the lowest end of the oblique through groove 44, and the upper spring 72 is pre-tightened by the pre-tightening nut 65, pressing against the washer 64, playing a supporting role, so that the entire vertical shaft 6 will not fall.

[0063] A gear conveyor belt 81 is also provided on the frame 1 , and the gear 8 in the gear conveyor belt 81 is pushed toward the assembly workbench 90 by the pushing mechanism.

[0064] A cylinder 82 is also fixedly provided on the frame 1 , and the cylinder 82 pushes the gear conveying block 83 to move horizontally on the slide rail 85 on the frame 1 , and the movement direction is perpendicular to the gear conveying belt 81 . The gear conveying block 83 is provided with a gear accommodating groove 84 .

[0065] On the side of the frame is an assembly workbench 90 , on which is a conveyed shell 91 , in which a gear 9 has been installed.

[0066] The housing 91 here can be as follows Figure 2 The housing 11' shown, the first installed gear 9 and the gear 8 conveyed on the gear conveyor belt can respectively correspond to: the first-stage gear 122' on the input rotating member 12' and the lower large gear 131' of the second-stage double gear 13'; or, the upper small gear 132' of the second-stage double gear 13' and the lower large gear 141' of the third-stage double gear 14'; or, the upper small gear 142' of the third-stage double gear 14' and the lower large gear 151' of the output rotating member 15'.

[0067] It can be operated according to the set program, or several sensors can be installed on the frame 1 to sense the moving distance of the horizontal fixing frame 3, the first vertical fixing frame 4, the second vertical fixing frame 5, and the gear conveying block 83, and send the data to the processor, which then controls the cylinders that drive these components, thereby controlling the movement of these components.

[0068] When working:

[0069] The cylinder 82 pushes the gear conveying block 83 to move horizontally on the slide rail 85 on the frame 1, and the gear accommodating groove 84 is aligned with the output end of the gear conveyor belt 81. A gear 8 is pushed into the gear accommodating groove 84, and the cylinder 82 pushes the gear conveying block 83 in the opposite direction to move horizontally on the slide rail 85 on the frame 1. The gear 8 is sent to the bottom of the three-claw positioning grabbing block mechanism 69, and the other gears 8 on the gear conveyor belt 81 wait for the next push.

[0070] Gear 8 has two forms, one is as follows Figure 3 , Figure 4 As shown, it is a double gear, with a large gear 88 at the bottom and a cylindrical protrusion 86 at the upper end of the small gear 87 at the top. The other is a single gear with a cylindrical protrusion above the gear, and a magnet is embedded in the groove of the cylindrical protrusion. No matter which one, there is a cylindrical protrusion for the three-claw positioning grasping block mechanism to grasp.

[0071] This is the initial working position, and then the cylinder 23 fixed on the horizontal fixing frame 3 drives the first vertical fixing frame 4 to move vertically downward, and thus the second vertical fixing frame 5, the vertical axis 6, and the three-claw positioning grabbing block mechanism 69 move downward together. At this time, the three claws of the three-claw positioning grabbing block mechanism 69 are open.

[0072] After the three claws are outside the cylindrical protrusion 86 of the gear 8, the first vertical fixing frame 4, the second vertical fixing frame 5, the vertical shaft 6, and the three-claw positioning grabbing block mechanism 69 stop moving downward, and the three claws of the three-claw positioning grabbing block mechanism 69 close together to grab the cylindrical protrusion 86 of the gear 8.

[0073] The cylinder 23 fixed on the transverse fixing frame 3 drives the first vertical fixing frame 4 to move vertically upward, so that the gear 8 is grabbed and leaves the gear accommodating groove 84 together with the second vertical fixing frame 5, the vertical shaft 6, and the three-claw positioning grabbing block mechanism 69 upward.

[0074] When the gear 8 moves upward to the preset appropriate position, that is, after the gear 8 is out of the gear accommodating groove 84, the first vertical fixing frame 4, the second vertical fixing frame 5, the vertical shaft 6, the three-claw positioning grabbing block mechanism 69, and the gear 8 stop moving upward, and the cylinder 21 is connected through the cylinder transmission mechanism 22 and drives the transverse fixing frame 3 to move laterally outward, together with the first vertical fixing frame 4, the second vertical fixing frame 5, the vertical shaft 6, the three-claw positioning grabbing block mechanism 69, and the gear 8, until the gear 8 reaches above the gear shaft 92 in the housing 91 to be installed.

[0075] Then the cylinder 23 fixed on the transverse fixing frame 3 drives the first vertical fixing frame 4 to move vertically downward, and thus the second vertical fixing frame 5, the vertical shaft 6, the three-claw positioning grab block mechanism 69, and the gear 8 are moved downward together.

[0076] The first case is:

[0077] The axial hole of gear 8 is smoothly inserted into the gear shaft 92, and the gear 8 is smoothly meshed with the previously installed gear 9 teeth and teeth, without interference and jamming. After gear 8 is in place, the first vertical fixed frame 4, the second vertical fixed frame 5, the vertical shaft 6, and the three-claw positioning grabbing block mechanism 69 stop moving downward, and the three claws of the three-claw positioning grabbing block mechanism 69 open and release gear 8, and the first vertical fixed frame 4, the second vertical fixed frame 5, the vertical shaft 6, and the three-claw positioning grabbing block mechanism 69 move upward together. After being in place, the cylinder 21 is connected through the cylinder transmission mechanism 22 and drives the horizontal fixed frame 3 to move horizontally inward, and together with the first vertical fixed frame 4, the second vertical fixed frame 5, the vertical shaft 6, and the three-claw positioning grabbing block mechanism 69, they move horizontally inward and return to the initial position.

[0078] The second case is:

[0079] The shaft hole of the gear 8 is inserted into the gear shaft 92, and the gear 8 interferes with the previously installed gear 9, that is, the lower surface of the gear 8 is pressed on the upper surface of the previously installed gear 9 and is stuck.

[0080] At this time, the first vertical fixing frame 4 continues to descend; since the middle diameter portion 62 of the vertical shaft 6 cooperates with the inner ring of the bearing 53, the vertical shaft 6 can rotate; and the second vertical fixing frame 5 can move along the slide rail 40 relative to the first vertical fixing frame 4; and the screw 623 fixed on the vertical shaft 6 can move from bottom to top in the oblique through groove 44 of the side wall of the sleeve 43 to play a driving, guiding and limiting role; and since the vertical shaft 6 can push upward to compress the lower spring 71; therefore, the vertical shaft 6 and the second vertical fixing frame 5 can remain stationary in the vertical direction when the first vertical fixing frame 4 descends; at the same time, the vertical shaft 6 is fixed by the screw 623 and the oblique through groove 44 The structure of the matching The gear 8 is driven to start rotating, driving the gear 8 at its lower end to rotate, and the relative position of the teeth of the gear 8 and the previously installed gear 9 changes. Finally, the teeth of the gear 8 rotate to the meshing position with the previously installed gear 9. At this time, the support of the gear 9 is lost below the gear 8, and the lower spring 71 is reset to pop up the vertical shaft 6 downward, and the gear 8 pops up downward until it meshes with the previously installed gear 9. During this process, the screw 623 fixed on the vertical shaft 6 moves from top to bottom in the oblique through groove 44 and returns to the bottom, and the gear 8 rotates with the gear 9. However, since the gear 8 and the gear 9 are already meshed, there will be no interference, and the gear 8 can be installed smoothly.

[0081] After the gear 8 is in place, the first vertical fixed frame 4, the second vertical fixed frame 5, the vertical shaft 6, and the three-claw positioning grabbing block mechanism 69 stop moving downward, the three claws of the three-claw positioning grabbing block mechanism 69 open and release the gear 8, the first vertical fixed frame 4, the second vertical fixed frame 5, the vertical shaft 6, and the three-claw positioning grabbing block mechanism 69 move upward together, and after being in place, the cylinder 21 is connected through the cylinder transmission mechanism 22 and drives the transverse fixed frame 3 to move transversely inward, and together with the first vertical fixed frame 4, the second vertical fixed frame 5, the vertical shaft 6, and the three-claw positioning grabbing block mechanism 69, they move transversely inward and return to the initial position.

[0082] The structure of the present invention is mainly to solve the second situation, so that the gear 8 rotates to the meshing position by itself under interference without the need for manual marking in advance.

[0083] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same and similar parts between the embodiments can be referred to each other. The above description of the disclosed embodiments enables professionals and technicians in this field to implement or use the present invention. Various modifications to these embodiments will be obvious to professionals and technicians in this field, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown in this article, but will comply with the widest range consistent with the principles and novel features disclosed herein.

Claims

1. Plastic gear assembly mechanism, characterized in that: A cylinder for driving the horizontal fixing frame to move horizontally is installed on the frame, and a cylinder for driving the first vertical fixing frame to move vertically is fixed on the horizontal fixing frame; The first vertical fixing frame extends laterally out of the first vertical fixing frame cross plate; A through hole is provided on the horizontal plate of the first vertical fixing frame, a hollow sleeve coaxial with the through hole is fixedly connected to the lower surface of the horizontal plate of the first vertical fixing frame, and an oblique through groove is provided on the side wall of the sleeve; A vertical shaft having a middle diameter portion and a small diameter portion rotatably passes through the sleeve and the through hole; A pin extending from the vertical shaft passes through the oblique through slot, and the pin can slide in the oblique through slot; A lower spring is sleeved on the small diameter portion, the lower spring is located in the sleeve, the lower end of the lower spring abuts against the top end surface of the medium diameter portion, and the upper end of the lower spring abuts against the lower surface of the horizontal plate of the first vertical fixing frame; An upper spring is sleeved on the small diameter portion, the lower end of the upper spring abuts against the upper surface of the horizontal plate of the first vertical fixing frame, and the upper end of the upper spring abuts against the convex wall provided on the small diameter portion; The threaded portion at the top of the small diameter portion is sleeved with a pre-tightening nut as a convex wall, and the upper end of the upper spring abuts against the lower surface of the washer; The bottom end of the vertical shaft is fixedly connected with a grasping mechanism; the grasping mechanism is a three-claw positioning grasping block mechanism.

2. The plastic gear assembly mechanism according to claim 1, characterized in that: A second vertical fixing frame is slidably embedded in a slide rail fixed on the first vertical fixing frame; the second vertical fixing frame extends laterally out of a second vertical fixing frame cross plate; a bearing is fixed in a through hole provided on the cross plate of the second vertical fixing frame; a large diameter portion is provided at the lower end of the middle diameter portion of the vertical shaft, the middle diameter portion of the vertical shaft passes through the bearing and cooperates with the inner ring of the bearing; the top end surface of the large diameter portion is located below the inner ring of the bearing, and a clamp clamped in the annular groove on the middle diameter portion is located above the inner ring of the bearing to clamp the bearing.

3. The plastic gear assembly mechanism according to claim 1, characterized in that: The frame is also provided with a gear conveyor belt, in which gears are placed. The frame is also fixed with a cylinder for pushing the gear conveyor block to move horizontally on the slide rail on the frame. The movement direction of the gear conveyor block is perpendicular to the gear conveyor belt, and the gear conveyor block is provided with a gear accommodating groove.

4. The plastic gear assembly mechanism according to claim 3, characterized in that: Sensors are installed on the frame to respectively sense the moving distances of the horizontal fixing frame, the first vertical fixing frame, the second vertical fixing frame, and the gear conveying block. The sensors are connected to the processor, and the processor is connected to the cylinder that controls and drives the horizontal fixing frame, the first vertical fixing frame, the second vertical fixing frame, and the gear conveying block.

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