CN220596136U

CN220596136U - Accurate positioning type car threshold loading attachment

Info

Publication number: CN220596136U
Application number: CN202320821714.3U
Authority: CN
Inventors: 张扬; 霍泽林; 何文宝; 宋黎
Original assignee: Suzhou Haitai Automobile Technology Co ltd
Current assignee: Suzhou Haitai Automobile Technology Co ltd
Priority date: 2022-05-31
Filing date: 2023-04-14
Publication date: 2024-03-15
Anticipated expiration: 2033-04-14

Abstract

The utility model discloses a precisely positioned car threshold feeding device, which comprises: the feeding machine comprises a feeding machine frame, a transmission mechanism, a product conveying tool, a group of first positioning calibration mechanisms and a group of second positioning calibration mechanisms, wherein the transmission mechanism is arranged on the inner side of the feeding machine frame, the product conveying tool is arranged on the transmission mechanism, positioning calibration blocks and positioning calibration boxes are arranged at two ends of two sides of the product conveying tool, and the first positioning calibration mechanisms and the second positioning calibration mechanisms are fixed on the feeding machine frame and are respectively arranged opposite to the positioning calibration blocks and the positioning calibration boxes. The utility model has reasonable structural design, realizes the conveying and feeding functions of products by arranging the product conveying tool above the transmission mechanism, effectively reduces the workload of workers, improves the feeding efficiency, and also calibrates and positions the position of the product conveying tool by the first positioning and calibrating mechanism and the second positioning and calibrating mechanism so as to ensure the position accuracy of the product to be processed and improve the processing accuracy of subsequent procedures.

Description

Accurate positioning type car threshold loading attachment

Technical Field

The utility model belongs to the technical field of automobile plastic part processing, and particularly relates to a precisely-positioned automobile threshold feeding device.

Background

The automobile threshold is also called as a welcoming pedal, the automobile threshold plate is fixed by adopting a buckle, and after the buckle is installed, the threshold plate is required to be partially welded, and the assembly welding of the existing automobile threshold part comprises a plurality of working procedures; during processing, each working procedure is fed by manpower, so that the workload of workers is increased in the manual carrying and transferring processes, a great amount of time is consumed, and the processing efficiency is seriously affected;

the granted China patent CN202020393172.0 discloses an automobile threshold welding workstation, which comprises a plurality of welding robots arranged in a line, wherein two sides of each welding robot are respectively provided with a plurality of working positions, and a middle turntable is arranged between adjacent working positions on the same side; the welding robot is characterized in that the two sides of the tail part of the last welding robot are provided with a transfer robot, fixed welding guns are respectively arranged on the outer sides of the transfer robot, single personnel cross each other to perform assembly and feeding of parts between working positions on the same side, the same group of welding robots also cross each other to weld products on the working positions on the two sides, the personnel and the welding robots on the same working position cross each other, the transfer robot clamps and transfers the products on the working positions to the fixed welding guns, the working tail end of the transfer robot is provided with a clamp, after the transfer robot clamps an automobile threshold from the corresponding working position, the transfer robot moves the automobile threshold to the corresponding fixed welding gun, and the fixed welding guns repair-weld the automobile threshold under the posture change of the transfer robot;

in the scheme, the cost of the transfer robot is high, and the production cost of enterprises is greatly increased; meanwhile, the car threshold belongs to a large-sized workpiece, the car threshold is clamped by a clamp at the tail end of the carrying robot, the problems of shaking, deviation and the like easily occur in the working process, the accuracy of the welding position required by a product is difficult to ensure, and the whole workstation cannot calibrate and position the position of the product, so that the welding accuracy of the welding robot is influenced;

the Chinese patent CN202121933283.7 is granted to disclose a device for rapidly carrying automobile threshold, through first conveyer belt, punch press, first slide, first sucking disc, second conveyer belt, first positioner, third conveyer belt, second positioner, third positioner, push away material cylinder, second sucking disc, second slide, third sucking disc and fourth conveyer belt cooperate, possess degree of automation height, need not artifical transport, reduce manpower intensity of labour, can also guarantee the advantage of its stability when promoting production speed, need a plurality of conveyer belts in the whole transport process, still need mechanisms such as sucking disc to cooperate with it can accomplish the material loading work, however its whole transport, conveying structure is comparatively complicated, its manufacturing cost is higher;

therefore, the feeding device which is simple in structure, capable of replacing manual work and achieving calibration and positioning and improving the processing accuracy of products is urgently needed.

Disclosure of Invention

The utility model aims to: in order to overcome the defects, the utility model aims to provide the accurate positioning type doorsill feeding device which is reasonable in structural design, and the conveying and feeding functions of products are realized by arranging the product conveying tool above the conveying mechanism, so that the workload of workers is effectively reduced, the feeding efficiency is improved, and meanwhile, the first positioning calibration mechanism and the second positioning calibration mechanism are also arranged, so that the positions of the product conveying tool can be calibrated and positioned, and the accuracy of the positions of products to be processed is ensured.

The technical scheme is as follows: in order to achieve the above purpose, the utility model provides a precisely positioned car threshold feeding device, comprising: the feeding machine comprises a feeding machine frame, a transmission mechanism, a product conveying tool, a group of first positioning calibration mechanisms and a group of second positioning calibration mechanisms, wherein the transmission mechanism is arranged on the inner side of the feeding machine frame, the product conveying tool is arranged on the transmission mechanism, positioning calibration blocks and positioning calibration boxes are arranged at two ends of two sides of the product conveying tool, and the first positioning calibration mechanisms and the second positioning calibration mechanisms are fixed on the feeding machine frame and are respectively arranged opposite to the positioning calibration blocks and the positioning calibration boxes. The accurate positioning type doorsill feeding device is reasonable in structural design, and the product conveying tool is arranged above the transmission mechanism, so that the conveying and feeding functions of products are achieved, the workload of workers is effectively reduced, the feeding efficiency is improved, meanwhile, the first positioning calibration mechanism and the second positioning calibration mechanism are also arranged, the positions of the product conveying tool can be calibrated and positioned, the accuracy of the positions of products to be processed is guaranteed, the accuracy of the processing of subsequent working procedures is improved, and the production requirement is better met.

The product transportation tool comprises a transportation bottom plate, a group of tool bottom plates and tool holders, wherein the tool bottom plates are arranged on two sides of the transportation bottom plate, the tool holders are arranged on the tool bottom plate, and a group of reinforcing beams are further arranged below the transportation bottom plate. And due to the arrangement of the stiffening beam, the structural strength of the product transportation tool is greatly improved.

Preferably, a group of limiting cylinders are arranged below the transportation bottom plate, the upper parts of the limiting cylinders are fixedly connected with the lower part of the transportation bottom plate, and the output ends of the limiting cylinders are connected with the sucking disc on the transportation bottom plate through air supply pipelines. The setting of spacing cylinder can adsorb the frock seat, improves its transportation and later stage product processing's stability.

Further, the first positioning calibration mechanism comprises a first fixed plate, a first positioning driving cylinder, a guide seat and a positioning needle, wherein the first fixed plate is fixed on the feeding frame, the positioning driving cylinder is arranged on the first fixed plate and fixedly connected with the mounting plate, the guide seat is arranged on the first fixed plate and is arranged opposite to the positioning driving cylinder, and the positioning needle is connected with the output end of the first positioning driving cylinder and penetrates through the guide seat. Further, the second positioning calibration mechanism comprises a second fixing plate, a mounting seat, a driving cylinder, a baffle, a positioning pin and a buffer pin, a group of sliding rails are arranged on the second fixing plate, the mounting seat is in sliding connection with the sliding rails, the driving cylinder is arranged on the second fixing plate and is fixedly connected with the cylinder mounting plate, the baffle, the positioning pin and the buffer pin are all arranged on the mounting seat, and the baffle, the positioning pin and the buffer pin are matched with the baffle, the positioning hole and the buffer block in the positioning calibration box.

Further, the transmission mechanism comprises a driving mechanism and a driven mechanism, the driving mechanism comprises a driving shaft and a transmission driving motor, the driving shaft is connected with the feeding rack through a bearing seat, the transmission driving motor is fixedly connected with the feeding rack through a motor mounting seat, a driving wheel is arranged at the output end of the transmission driving motor, a driven wheel is arranged at one end, close to the transmission driving motor, of the driving shaft, a first driven sprocket is arranged at the inner side of the bearing seat, and the driving wheel is connected with the driven wheel through a belt;

the driven mechanism is arranged at the other end of the feeding frame relative to the driving mechanism, the driven mechanism is connected with the first driven sprocket through a roller chain, and the product conveying tool is arranged above the roller chain.

Preferably, the driven mechanism comprises a fixed seat and a second driven sprocket, the fixed seat is fixedly connected with the feeding frame, a balance fixed shaft is arranged in the fixed seat, the second driven sprocket is arranged on one side of the fixed seat, the second driven sprocket is connected with the connecting shaft, one end of the connecting shaft extends into the fixed seat, the balance fixed shaft penetrates through a through hole at the tail end of the connecting shaft to fix the connecting shaft, and the first driven sprocket and the second driven sprocket are connected through a roller chain.

The utility model further comprises a protective cover shell, wherein the protective cover shell is fixed on the inner side of the feeding frame, the roller chain penetrates through a track of the protective cover shell, an opening is formed in the protective cover shell, and the upper part of the roller chain is higher than the opening of the protective cover shell. The arrangement of the protective housing greatly improves the safety of roller chain conveying.

The utility model further comprises a group of limit posts which are arranged on the inner side of the end part of the feeding frame and are matched with the reinforcing beam. The setting of spacing post can carry out spacingly to product transportation frock.

Preferably, a group of moving wheels are arranged at the lower part of the feeding frame. The moving wheel can adjust the position of the feeding device according to the requirement.

The technical scheme can be seen that the utility model has the following beneficial effects:

1. the accurate positioning type doorsill feeding device is reasonable in structural design, and the product conveying tool is arranged above the transmission mechanism, so that the conveying and feeding functions of products are achieved, the workload of workers is effectively reduced, the feeding efficiency is improved, meanwhile, the first positioning calibration mechanism and the second positioning calibration mechanism are also arranged, the positions of the product conveying tool can be calibrated and positioned, the accuracy of the positions of products to be processed is guaranteed, the accuracy of the processing of subsequent working procedures is improved, and the production requirement is better met.

2. According to the utility model, the group of limiting cylinders are arranged below the transportation bottom plate, and the limiting cylinders can adsorb the tool seat, so that the stability of transportation and later-stage product processing is improved.

3. The utility model further comprises a group of limit posts which are arranged on the inner side of the end part of the feeding frame and are matched with the reinforcing beam. .

Drawings

FIG. 1 is a schematic structural view of a precisely positioned threshold loading device according to the present utility model;

FIG. 2 is a schematic structural view of a product transportation tool according to the present utility model;

FIG. 3 is a schematic view of the installation of a spacing cylinder according to the present utility model;

FIG. 4 is a schematic diagram of a first positioning calibration mechanism according to the present utility model;

FIG. 5 is a schematic diagram of a second positioning calibration mechanism according to the present utility model;

FIG. 6 is a schematic diagram of a transmission mechanism according to the present utility model;

FIG. 7 is a schematic view of a part of the structure of B in the transmission mechanism of the present utility model;

FIG. 8 is a schematic view of a partial structure of A in the transmission mechanism according to the present utility model;

FIG. 9 is a schematic view of the structure of the protective casing according to the present utility model;

FIG. 10 is a schematic view of the installation of a mobile wheel according to the present utility model;

fig. 11 is a schematic structural view of a lifting mechanism in the present utility model.

Detailed Description

The utility model is further elucidated below in connection with the drawings and the specific embodiments.

Examples

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more, unless otherwise clearly defined.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

Example 1

The accurate positioning type car threshold loading attachment as shown in fig. 1 includes: the feeding machine frame 11, the transmission mechanism 12, the product transportation tool 13, a set of first positioning calibration mechanism 14 and second positioning calibration mechanism 15, the transmission mechanism 12 is located the inboard of feeding machine frame 11, the product transportation tool 13 is located on the transmission mechanism 12, the both ends of product transportation tool 13 both sides are equipped with positioning calibration piece 1301 and positioning calibration box 1302, first positioning calibration mechanism 14 and second positioning calibration mechanism 15 are fixed in on the feeding machine frame 11 to set up with positioning calibration piece 131 and positioning calibration box 132 relatively respectively.

As shown in fig. 2 and 3, the product transporting fixture 13 includes a transporting base plate 131, a set of fixture base plates 132, and fixture holders 133, wherein the fixture base plates 132 are disposed on two sides of the transporting base plate 131, the fixture holders 133 are disposed on the fixture base plates 132, and a set of reinforcing beams 1311 are disposed under the transporting base plate 131; a group of limiting air cylinders 134 are arranged below the transportation bottom plate 131, the upper parts of the limiting air cylinders 134 are fixedly connected with the lower part of the transportation bottom plate 131, and the output ends of the limiting air cylinders are connected with sucking discs 135 on the transportation bottom plate 131 through air supply pipelines.

As shown in fig. 4, the first positioning calibration mechanism 14 includes a first fixing plate 141, a first positioning driving cylinder 142, a guide seat 143, and a positioning needle 144, where the first fixing plate 141 is fixed on the feeding frame 11, the positioning driving cylinder 141 is disposed on the first fixing plate 141 and fixedly connected with the mounting plate, the guide seat 143 is disposed on the first fixing plate 141 and is disposed opposite to the positioning driving cylinder 141, and the positioning needle 144 is connected with an output end of the first positioning driving cylinder 142 and penetrates through the guide seat 143.

As shown in fig. 5, the second positioning calibration mechanism 15 includes a second fixing plate 151, a mounting base 152, a driving cylinder 153, a baffle 154, a positioning pin 155 and a buffer pin 156, a set of sliding rails are disposed on the second fixing plate 151, the mounting base 152 is slidably connected with the sliding rails, the driving cylinder 153 is disposed on the second fixing plate 151 and fixedly connected with the cylinder mounting plate, the baffle 154, the positioning pin 155 and the buffer pin 156 are disposed on the mounting base 152, and the baffle 154, the positioning pin 155 and the buffer pin 156 are matched with the baffle, the positioning hole and the buffer block in the positioning calibration box 132.

As shown in fig. 6 to 7, the transmission mechanism 12 comprises a driving mechanism 121 and a driven mechanism 122, the driving mechanism 121 comprises a driving shaft 1211 and a transmission driving motor 1212, the driving shaft 121 is connected with the feeding frame 11 through a bearing seat, the transmission driving motor 1212 is fixedly connected with the feeding frame 11 through a motor mounting seat, a driving wheel 1213 is arranged at the output end of the transmission driving motor 1212, a driven wheel 1214 is arranged at one end of the driving shaft 1211 close to the transmission driving motor 1212, a first driven sprocket 1215 is arranged at the inner side of the bearing seat, and the driving wheel 1213 and the driven wheel 1214 are connected through a belt;

the driven mechanism 122 is arranged at the other end of the feeding frame 11 relative to the driving mechanism 121, the driven mechanism 122 is connected with the first driven sprocket 1215 through a roller chain 123, and the product conveying tool 13 is arranged above the roller chain 123.

As shown in fig. 8, the driven mechanism 122 includes a fixed seat 1221 and a second driven sprocket 1222, the fixed seat 1221 is fixedly connected with the feeding frame 11, a balance fixed shaft 1223 is disposed in the fixed seat 1221, the second driven sprocket 1222 is disposed on one side of the fixed seat 1221, the second driven sprocket 1222 is connected with a connecting shaft 1224, one end of the connecting shaft 1224 extends into the fixed seat 1221, the balance fixed shaft 1223 passes through a through hole at the end of the connecting shaft 1224 to fix the connecting shaft, and the first driven sprocket 1215 and the second driven sprocket 1222 are connected through a roller chain 123.

Example 2

The feeding rack 11 comprises a feeding upper rack and a feeding lower rack, wherein the feeding upper rack and the feeding lower rack are connected through a vertical mounting rack, and a group of guide rails are arranged on two sides between the feeding upper rack and the feeding lower rack.

As shown in fig. 6, the feeding frame 11 further includes a lifting frame 18, two ends of the lifting frame 18 are connected with the guide rail in a lifting manner through guide wheels, and the transmission mechanism 12 is disposed on the lifting frame 18.

As shown in fig. 11, the lifting driving mechanism 19 comprises a driving shaft 191, a driven shaft 192, two groups of upper driving chain wheels 193 and a driving motor 194, wherein the driving shaft 191 and the driven shaft 192 are oppositely arranged at two ends of the lower mounting frame and are connected with bearing seats on the lower mounting frame, and the upper driving chain wheels 193 are connected with a rotating shaft on the upper feeding frame through bearings;

the driving device is characterized in that driving sprockets 195 and lifting sprockets 196 are arranged at two ends of the driving shaft 191 and the driven shaft 192, a first driving sprocket 197 is arranged on the outer side of the driving shaft 194, which is close to one end of the driving shaft 194, which is located on the driving sprocket 195, the driving motor 194 is fixedly connected with a lower layer installation frame through a motor installation seat, driving sprockets 1941 are arranged at the output end of the driving motor 194, the driving sprockets 1941 are connected with the first driving sprockets 197 through chains, the driving sprockets 195 on the driving shaft 191 are connected with the driving sprockets 195 on the driven shaft 192 through chains, and the lifting sprockets 196 on the driving shaft 191 and the driven shaft 192 are connected with corresponding upper driving sprockets 193 on an upper layer installation frame through lifting chains.

In this embodiment, two ends of the lifting frame 18 are connected to a lifting chain through a chain buckle 181.

The device further comprises a protective cover 124 as shown in fig. 9, the protective cover 124 is fixed on the inner side of the feeding frame 11, the roller chain 123 penetrates through the track of the protective cover 124, an opening is arranged on the protective cover 124, and the upper part of the roller chain 123 is higher than the opening of the protective cover 124.

The device also comprises a group of limit posts 16 as shown in fig. 1, wherein the limit posts 16 are arranged on the inner side of the end part of the feeding frame 11 and are matched with the reinforcing beams 1311.

A set of moving wheels 17 are provided at the lower part of the loading frame 11 as shown in fig. 10.

The working principle of the precisely positioned car threshold feeding device in the embodiment is as follows: manually mounting a rocker plate to be processed on a tool seat 133 of a product conveying tool 13, driving a positioning needle to move forwards through a first positioning driving cylinder 142 in a first positioning calibration mechanism 14 until the positioning needle is inserted into a corresponding guide seat 143, and simultaneously driving a mounting seat 152 to move forwards along a sliding rail by a driving cylinder 153 in a second positioning calibration mechanism 15, and driving a baffle 154, a positioning pin 155 and a buffer pin 156 to move forwards until the positioning pin 155 and the buffer pin 156 are respectively inserted into a positioning hole and a buffer block to calibrate the product conveying tool 13 when the mounting seat 152 moves;

the limiting cylinder 134 adsorbs and positions a tool seat 133 on the product conveying tool 13;

then the transmission mechanism 12 moves the product conveying tool 13 filled with the product to be processed to the next station, namely, the driving wheel 1213 on the transmission driving motor 1212 in the driving mechanism 121 drives the driven wheel 1214 to rotate, the first driven sprocket 1215 rotates together with the driven wheel 1214, the roller chain 123 is driven to move forward when the first driven sprocket 1215 rotates, so that the second driven sprocket 1222 is driven to rotate, and the product conveying tool 13 filled with the product to be processed is driven to move forward when the roller chain 123 moves;

when the product conveying tool 13 filled with the product to be processed is separated from the conveying mechanism 12, the lifting driving mechanism 19 drives the lifting frame 18 to drive the conveying mechanism 12 to move downwards along the track, namely, the driving sprocket 1941 at the output end of the driving motor 194 in the lifting driving mechanism 19 drives the first driving sprocket 197 to rotate, the driving sprocket 195 on the main driving shaft 191 is driven by the first driving sprocket 197 to rotate, the driving sprocket 195 on the main driving shaft 191 drives the driving sprocket 195 on the driven shaft 192 to rotate along with the driving sprocket 195, in the process, the upper driving sprocket 193 is driven by the lifting sprocket 196 to rotate, and the chain buckle 621 on the lifting chain in the chain transmission process drives the lifting frame 62 to move downwards along the guide rail to move to the lower layer of mounting frame;

when the product on the product conveying tool 13 is processed on the production line, the product is discharged from the last process, the processed product is taken away, and the product conveying tool 13 after the discharging is conveyed to the conveying mechanism 12 on the upper frame of the upper material layer, the driving motor 194 in the lifting driving mechanism 19 moves reversely, and the lifting frame 18 and the conveying mechanism 12 thereon are lifted to the initial position of the upper frame of the upper material layer.

The foregoing is merely a preferred embodiment of the utility model, and it should be noted that modifications could be made by those skilled in the art without departing from the principles of the utility model, which modifications would also be considered to be within the scope of the utility model.

Claims

1. Accurate positioning type car threshold loading attachment, its characterized in that: comprising the following steps: the feeding machine comprises a feeding machine frame (11), a transmission mechanism (12), a product conveying tool (13), a group of first positioning calibration mechanisms (14) and a second positioning calibration mechanism (15), wherein the transmission mechanism (12) is arranged on the inner side of the feeding machine frame (11), the product conveying tool (13) is arranged on the transmission mechanism (12), positioning calibration blocks (1301) and positioning calibration boxes (1302) are arranged at two ends of two sides of the product conveying tool (13), and the first positioning calibration mechanisms (14) and the second positioning calibration mechanisms (15) are fixed on the feeding machine frame (11) and are respectively arranged opposite to the positioning calibration blocks (1301) and the positioning calibration boxes (1302);

the first positioning calibration mechanism (14) comprises a first fixing plate (141), a first positioning driving cylinder (142), a guide seat (143) and a positioning needle (144), wherein the first fixing plate (141) is fixed on the feeding frame (11), the positioning driving cylinder (142) is arranged on the first fixing plate (141) and fixedly connected with the mounting plate, the guide seat (143) is arranged on the first fixing plate (141) and is opposite to the positioning driving cylinder (142), and the positioning needle (144) is connected with the output end of the first positioning driving cylinder (142) and penetrates through the guide seat (143); the second positioning and calibrating mechanism (15) comprises a second fixing plate (151), a mounting seat (152), a driving cylinder (153), a baffle (154), a positioning pin (155) and a buffer pin (156), wherein a group of sliding rails are arranged on the second fixing plate (151), the mounting seat (152) is in sliding connection with the sliding rails, the driving cylinder (153) is arranged on the second fixing plate (151) and fixedly connected with the cylinder mounting plate, the baffle (154), the positioning pin (155) and the buffer pin (156) are all arranged on the mounting seat (152), and the baffle (154), the positioning pin (155) and the buffer pin (156) are matched with the baffle, the positioning hole and the buffer block in the positioning and calibrating box (1302).

2. The precisely positioned car threshold loading device of claim 1, wherein: product transportation frock (13) are including transportation bottom plate (131), a set of frock bottom plate (132) and frock seat (133), the both sides of transportation bottom plate (131) are located to frock bottom plate (132), frock seat (133) are located on frock bottom plate (132), just the below of transportation bottom plate (131) still is equipped with a set of stiffening beam (1311).

3. The precisely positioned car threshold loading device of claim 2, wherein: the lower part of the transportation bottom plate (131) is provided with a group of limiting cylinders (134), the upper parts of the limiting cylinders (134) are fixedly connected with the lower part of the transportation bottom plate (131), and the output ends of the limiting cylinders are connected with sucking discs (135) on the transportation bottom plate (131) through air supply pipelines.

4. The precisely positioned car threshold loading device of claim 1, wherein: the conveying mechanism (12) comprises a driving mechanism (121) and a driven mechanism (122), the driving mechanism (121) comprises a driving shaft (1211) and a conveying driving motor (1212), the driving shaft (1211) is connected with the feeding frame (11) through a bearing seat, the conveying driving motor (1212) is fixedly connected with the feeding frame (11) through a motor mounting seat, a driving wheel (1213) is arranged at the output end of the conveying driving motor (1212), a driven wheel (1214) is arranged at one end of the driving shaft (1211) close to the conveying driving motor (1212), a first driven sprocket (1215) is arranged at the inner side of the bearing seat, and the driving wheel (1213) is connected with the driven wheel (1214) through a belt;

the driven mechanism (122) is arranged at the other end of the feeding frame (11) relative to the driving mechanism (121), the driven mechanism (122) is connected with the first driven sprocket (1215) through a roller chain (123), and the product conveying tool (13) is arranged above the roller chain (123).

5. The precisely positioned rocker loading device of claim 4, wherein: the driven mechanism (122) comprises a fixed seat (1221) and a second driven sprocket (1222), the fixed seat (1221) is fixedly connected with the feeding frame (11), a balance fixed shaft (1223) is arranged in the fixed seat (1221), the second driven sprocket (1222) is arranged on one side of the fixed seat (1221), the second driven sprocket (1222) is connected with a connecting shaft (1224), one end of the connecting shaft (1224) extends into the fixed seat (1221), the balance fixed shaft (1223) penetrates through a through hole at the tail end of the connecting shaft (1224) to fix the connecting shaft, and the first driven sprocket (1215) and the second driven sprocket (1222) are connected through a roller chain (123).

6. The precisely positioned rocker loading device of claim 4, wherein: the automatic feeding device is characterized by further comprising a protective cover shell (124), wherein the protective cover shell (124) is fixed on the inner side of the feeding frame (11), the roller chain (123) penetrates through a track of the protective cover shell (124), an opening is formed in the protective cover shell (124), and the upper portion of the roller chain (123) is higher than the opening of the protective cover shell (124).

7. The precisely positioned car threshold loading device of claim 2, wherein: the feeding machine further comprises a group of limiting columns (16), wherein the limiting columns (16) are arranged on the inner side of the end part of the feeding machine frame (11) and are matched with the reinforcing beam (1311).

8. The precisely positioned car threshold loading device of claim 1, wherein: the lower part of the feeding frame (11) is provided with a group of moving wheels (17).