CN213105438U - Seat tray powder sleeve mounting machine - Google Patents

Abstract

The utility model relates to a seat tray installation field especially relates to a seat powder cover mounting plate. The powder sleeve of the seat tray is installed manually, the powder sleeve needs to be installed on two opposite sides of the seat tray, the installed powder sleeve needs to be axially aligned in installation on two sides, the installation precision requirement is high, and the mechanical automation of accurate installation of the powder sleeve can be realized by a conventional powder sleeve installing machine. In order to solve the above problems, the utility model adopts the following technical scheme: the utility model provides a seat tray powder cover installation machine which characterized in that: the device comprises an operation table, a feeding mechanism, a positioning mechanism and an installation mechanism, wherein the feeding mechanism, the positioning mechanism and the installation mechanism are arranged on the operation table; a positioning clamp is arranged on the positioning mechanism; the tail end of the feeding mechanism is provided with a feeding port; the mounting mechanism includes a guide assembly and a punch assembly. Through the setting of three part subassemblies, realized the accurate full-automatic mechanized installation of seat tray powder cover installation.

Description

Seat tray powder sleeve mounting machine

Technical Field

The utility model relates to a seat tray installation field especially relates to a seat powder cover mounting plate.

Background

The powder of the seat tray is sleeved on a bearing which needs to be installed on the fixed tray, and is a tiny but indispensable seat tray accessory. When the powder sleeve is installed, due to the fact that a series of procedures such as feeding, aligning and stamping are involved, no existing installation machine exists, and a manual mode of a worker is generally adopted in a factory to install the seat tray powder sleeve. However, such a method has high labor cost and low production efficiency, and is not suitable for large-scale production.

Chinese patent publication No. CN108673095A entitled "a stamping apparatus for fingertip tops" discloses a stamping apparatus for fastened circular components, but it only solves press-fitting after determining the installation position, and does not solve the complete feeding and aligning steps of the fine components. The powder cover of seat tray need install in the relative both sides of seat tray, and the axial that the powder cover after installing need realize both sides installation is aimed at, on the basis of realizing the punching press installation, requires more to the installation accuracy. Therefore, the problem of accurate calibration of the installation position in the mechanized installation process of the powder cover of the seat tray still needs to be solved.

Disclosure of Invention

In order to solve the problem, the utility model aims to provide a seat tray powder cover mounting plate.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a seat tray powder cover installation machine which characterized in that: the device comprises an operation table, a feeding mechanism, a positioning mechanism and an installation mechanism, wherein the feeding mechanism, the positioning mechanism and the installation mechanism are arranged on the operation table;

a positioning clamp is arranged on the positioning mechanism;

the tail end of the feeding mechanism is provided with a feeding port;

installation mechanism includes direction subassembly and punching press subassembly, direction subassembly is including the guiding axle that can carry out axial motion, punching press subassembly is including the punching press axle that can carry out axial motion, the guiding axle passes the setting from punching press axle center, the guiding axle with the axial direction of punching press axle is towards positioning fixture, the material loading mouth sets up on guiding axle and punching press axle are towards positioning fixture's motion route. The coaxial setting of direction subassembly and punching press subassembly for the powder cover does not only rely on the rigidity of material loading mouth its mounted position in the installation, and still further carries out the fine setting of position to the installation material, has promoted the installation accuracy. The feeding port is arranged on a moving path of the guide shaft and the stamping shaft towards the positioning fixture, so that after the powder sleeve is conveyed in place, positioning and installation can be smoothly realized.

In the invention, through analyzing various programs in the powder sleeve installation process, a designer disassembles the whole installation process of the powder sleeve into three main steps, and the functions of the three main steps are realized through three mechanisms respectively, so that the mechanization of the whole installation is realized. The scheme adopts a guiding mode, overcomes the defect that the installation of the traditional Chinese invention patent with the patent name of CN108673095A, namely the stamping device for the fingertip gyroscope, only has stamping and lacks guiding, improves the installation precision, reduces the defective rate of products, and solves the problem of accurate calibration of the installation position in the mechanized installation process of the seat tray powder sleeve.

Through the setting of feed mechanism, the powder cover has realized the automatic technological effect of carrying the station of being convenient for the installation with the powder cover of treating the installation, and feed mechanism fixes a position the powder cover on treating the dress station through the material loading mouth. The seat tray for installing the powder sleeve can be effectively fixed due to the arrangement of the positioning mechanism, and the position of the powder sleeve installing hole can be fixed due to the positioning clamp arranged on the seat tray. The guiding assembly of the mounting mechanism ensures that the powder sleeve is aligned with the mounting hole when mounted, while the punching assembly enables the powder sleeve to be securely mounted. The feeding mechanism adjusts the powder sleeve to be installed into an installable position through the feeding port, and conveys the powder sleeve to a path of the guide shaft and the stamping shaft towards the positioning clamp, so that the guide shaft, the stamping shaft, the powder sleeve to be installed and the installation hole in the seat tray are positioned on the same straight line. During installation, the powder sleeve is conveyed to the position to be loaded by the feeding port, the guide shaft extends out, penetrates through the middle hole of the annular powder sleeve and continuously penetrates through the mounting hole in the seat tray forwards to finish fine adjustment of the mounting position of the powder sleeve, and the powder sleeve, the guide shaft and the stamping shaft are positioned on the axis where the guide shaft and the stamping shaft are located. At this time, the punch shaft is forwardly punched, and the powder sheath is fitted into the fitting hole.

Further, the top end of the guide shaft is conical. The top end of the guide shaft is designed to be conical, so that the guide shaft can conveniently penetrate through the middle hole of the powder sleeve, and the fine adjustment of the position of the middle hole is realized.

Furthermore, the guide shaft and the stamping shaft are respectively provided with a driving mechanism, and the driving mechanisms can drive the guide shaft and the stamping shaft to realize mutually independent axial movement. Although the guide shaft and the punching shaft are coaxially sleeved, the driving mechanisms of the guide shaft and the punching shaft are mutually independent, so that the guide shaft can extend forwards firstly, and the punching shaft can punch forwards. The driving mechanism can be set to be driven by a cylinder, electrically or in other driving modes.

Furthermore, the driving mechanism of the guide shaft penetrates through the center of the stamping shaft driving mechanism, and the stamping shaft driving mechanism is sleeved on the outer peripheral side of the guide shaft driving mechanism. The setting mode that cup joints with punching press axle and guiding axle is unanimous, and the drive mechanism of punching press axle and guiding axle also adopts the mode of coaxial cup jointing, and effectual operating space that has utilized.

Furthermore, the positioning mechanism comprises a fixed table for positioning and a positioning clamp arranged on the fixed table; the positioning fixture comprises two inner clamping arms which can be relatively axially close to or far away from each other, the inner clamping arms are arranged inside the seat tray, and the two inner clamping arms are respectively supported on the two inner walls of the seat tray to fix the seat tray. For the rigidity of the mounting hole when guaranteeing that the seat tray is placed, place the seat tray on the fixed station during installation to overcome seat tray bottom unevenness, put unstable technical problem, and set up positioning fixture from inside, produce lateral pressure to the seat tray through positioning fixture's the removal on outside both sides, fix the seat tray, prevent that it from taking place the displacement.

Furthermore, the top end of the inner clamping arm is a round head guide end. The top of interior arm lock sets up to the button head leading end and makes interior arm lock when aiming at the mounting hole, can finely tune the mounting hole position through the circular arc of button head week side, guarantees that the mounting hole location is in the position coaxial with interior arm lock, has further ensured the installation accuracy of powder cover.

Furthermore, positioning fixture still includes positive stop and backstop, positive stop and backstop set up inside the seat tray, be formed with the sliding tray between positive stop and backstop, interior arm lock sets up in the activity inslot to can slide in the activity inslot. The arrangement of the front stop block and the rear stop block enables the movable position of the inner clamping arm to be limited, so that the movable path of the inner clamping arm can not deviate, and the inner clamping arm still keeps the positioning accuracy when being reused. The seat tray has various types, and the inner wall of the tray of one type of seat tray is provided with a side wall which is arranged along the edge of the mounting hole and protrudes inwards. When the seat tray is installed, the front stop block and the rear stop block can directly limit the protruded side walls, the installation holes are limited in the sliding grooves, and hole position alignment can be carried out without the round head guide ends.

Further, the fixed station comprises a bracket arranged on the front side and a supporting platform arranged on the rear side, and the bracket at least comprises two supporting and lifting parts positioned on the outer side of the seat tray. Except the fixed part arranged on the inner side of the seat tray, the front part of the fixed platform is at least provided with two lifting parts on the outer side of the seat tray, the front part of the fixed platform plays a role in supporting the front part of the fixed platform, the rear part of the fixed platform is also provided with a supporting platform, and the supporting function of the rear part of the fixed platform is played, so that the seat tray with uneven bottom surface can be stably erected on the fixed platform. The operating lever provided on the seat tray can be erected on the lifting part. The cooperation of seat tray outside portion of lifting and inboard positive stop is spacing between portion of lifting and positive stop with the lateral wall of seat tray for the position has obtained further injecing about the seat tray.

Further, the lifting part comprises a front blocking part, a rear blocking part and a lifting groove formed between the front blocking part and the rear blocking part. When the seat tray is placed on the fixed table, the adjusting handle is placed in the lifting groove, and the front position and the rear position of the seat tray placed on the fixed table are fixed through the limitation of the front blocking part and the rear blocking part on the two sides of the lifting groove.

Further, feed mechanism is including the vibration dish that can realize the selection material to and material loading track and material loading mouth, be provided with the screening limit rail on the vibration dish inside wall, the inclined plane of screening limit rail for to vibration dish opening part lateral wall slope. The feeding mechanism provides the kinetic energy of feeding through vibration, and the screening side rail passes through the action of gravity, screens out the major part towards the powder cover of vibration dish lateral wall to arrange it, carry the material loading mouth through the material loading track.

The above technical scheme is adopted in the utility model, realized seat tray powder cover installation from the material loading, to the location, to the three-step full mechanized installation of installation. The whole mechanism carries out multiple positioning and fine adjustment on the alignment of the powder sleeve and the mounting hole during mounting through the fixation of the fixing table, the inner clamping arm, the front stop block, the rear stop block, the lifting part and the guide shaft, so that the mounting high precision is ensured, the trouble of manual mounting is reduced, and the product quality is improved.

Drawings

Fig. 1 is a schematic view of a positioning mechanism of a seat tray powder sleeve mounting machine according to an embodiment of the present invention, on which a seat tray is placed;

FIG. 2 is a schematic view of the positioning mechanism of the seat tray powder sleeve mounting machine according to the embodiment of the present invention;

FIG. 3 is a schematic view of the structure of the lower component of the positioning mechanism of the seat tray powder sleeve mounting machine according to the embodiment of the present invention;

FIG. 4 is an exploded view of the mounting mechanism of the seat tray powder sleeve mounting machine according to the embodiment of the present invention;

FIG. 5 is a schematic view of the structure of the installation mechanism of the seat tray powder sleeve installation machine according to the embodiment of the present invention;

FIG. 6 is a schematic view of a portion of a powder sleeve mounting machine for a seat tray according to an embodiment of the present invention;

fig. 7 is a schematic view of the overall structure of the seat tray powder sleeve mounting machine according to the embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

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

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

A powder sleeve mounting machine for a seat tray comprises a positioning mechanism 8, an operation table, a feeding mechanism 7 and a mounting mechanism 9, wherein the feeding mechanism 7 and the mounting mechanism 9 are arranged on the operation table; a positioning clamp is arranged on the positioning mechanism 8; the tail end of the feeding mechanism 7 is provided with a feeding port 71; the mounting mechanism 9 includes a guide assembly and a punch assembly.

The guide assembly comprises a guide shaft 91 capable of performing axial movement, the punching assembly comprises a punching shaft 92 capable of performing axial movement, and the guide shaft 91 penetrates through the center of the punching shaft 92. The axial direction of the guide shaft 91 and the axial direction of the punching shaft 92 face the positioning fixture, and the feeding port 71 is arranged on the moving path of the guide shaft 91 and the punching shaft 92 facing the positioning fixture. The top end of the guide shaft 91 is conical. The guide shaft 91 and the stamping shaft 92 are respectively provided with a driving mechanism, and the driving mechanisms can drive the guide shaft and the stamping shaft to realize mutually independent axial movement. The guide shaft driving mechanism 93 passes through the center of the press shaft driving mechanism 94, and the press shaft driving mechanism 94 is fitted around the outer peripheral side of the guide shaft driving mechanism 93. The space of mechanical arrangement is saved.

The positioning mechanism 8 comprises a fixed table for positioning and a positioning clamp arranged on the fixed table; the positioning fixture comprises two inner clamping arms 2 which can be close to or far away from the seat tray relatively in the axial direction, the inner clamping arms are arranged inside the seat tray 1, and the two inner clamping arms 2 respectively support and support the two inner walls of the seat tray 1 to fix the seat tray 1. The top end 21 of the inner clamping arm 2 is a round head guide end. The positioning fixture further comprises a front stop block 31 and a rear stop block 32, the front stop block 31 and the rear stop block 32 are arranged inside the seat tray 1, a sliding groove is formed between the front stop block 31 and the rear stop block 32, and the inner clamping arm 2 is arranged in the sliding groove and can slide in the sliding groove. The bottom end of the inner clamping arm 2 is slidably connected onto the linear track 4, and the linear track 4 is limited to guide the sliding direction of the inner clamping arm 2. The positioning fixture further comprises a driving part for adjusting the distance between the two inner clamping arms 2. In this embodiment, the embodiment is an isosceles triangle top block disposed between the two inner clipping arms, and when the top block moves upward, the inner clipping arms are pushed open to both sides, so as to clamp and fix the seat tray 1. The fixed station comprises a bracket arranged on the front side and a supporting platform 6 on the rear side, and the bracket at least comprises two supporting and lifting parts 5 positioned on the outer side of the seat tray. The lifting part includes a front stopper 51, a rear stopper 52, and a lifting groove 53 formed between the front stopper and the rear stopper.

Feed mechanism 7 is including the vibration dish 72 that can realize selecting materials to and material loading track 73 and material loading mouth 71, be provided with the screening limit rail on the vibration dish 72 inside wall, the screening limit rail is for the inclined plane to vibration dish opening part lateral wall slope.

In the invention, through analyzing various programs in the powder sleeve installation process, a designer disassembles the whole installation process of the powder sleeve into three main steps, and the functions of the three main steps are realized through three mechanisms respectively, so that the mechanization of the whole installation is realized. The scheme adopts a guiding mode, overcomes the defect that the installation of the traditional Chinese invention patent with the patent name of CN108673095A, namely the stamping device for the fingertip gyroscope, only has stamping and lacks guiding, improves the installation precision, reduces the defective rate of products, and solves the problem of accurate calibration of the installation position in the mechanized installation process of the seat tray powder sleeve. Through the setting of feed mechanism, the powder cover has realized the automatic technological effect of carrying the station of being convenient for the installation with the powder cover of treating the installation, and feed mechanism fixes a position the powder cover on treating the dress station through the material loading mouth. The seat tray for installing the powder sleeve can be effectively fixed due to the arrangement of the positioning mechanism, and the position of the powder sleeve installing hole can be fixed due to the positioning clamp arranged on the seat tray. The guiding assembly of the mounting mechanism ensures that the powder sleeve is aligned with the mounting hole during mounting, and the punching assembly ensures that the powder sleeve can be firmly mounted.

During the use, will treat that the powder cover of installation puts into the vibration dish, on the vibration dish carried the powder cover to the screening side rail through the vibration, the design of screening side rail made the powder cover major possession be close to the vibration dish wall, and the microcephaly is towards the vibration dish chamber, and neatly arranged carries to the material loading track, carries to the material loading mouth by the material loading track.

The feeding mechanism adjusts the powder sleeve to be installed into an installable position through the feeding port, and conveys the powder sleeve to a path of the guide shaft and the stamping shaft towards the positioning clamp, so that the guide shaft, the stamping shaft, the powder sleeve to be installed and the installation hole on the seat tray are positioned on the same straight line. During the installation, the feed opening carries the powder cover and treats the dress position, and the mounting hole of installation is treated to the microcephaly orientation, and the guiding axle outwards stretches out through the guiding axle drive, passes the mesopore of cyclic annular powder cover, continues to pass the mounting hole on the seat tray forward, the top of guiding axle designs into the taper and can be convenient for it and pass the mesopore of powder cover, realizes the fine setting of mesopore position. After fine adjustment is completed, the guide shaft positions the three parts on the same axis where the guide shaft and the stamping shaft are located. At the moment, the punching shaft drives and drives the punching shaft to punch forwards, and the powder sleeve is installed into the installation hole. The guide shaft and the stamping shaft are respectively provided with a driving mechanism, and the driving mechanisms can drive the guide shaft and the stamping shaft to realize mutually independent axial movement. The driving mechanism of the guide shaft penetrates through the center of the stamping shaft driving mechanism, and the stamping shaft driving mechanism is sleeved on the outer peripheral side of the guide shaft driving mechanism. Although the guide shaft and the punching shaft are coaxially sleeved, the driving mechanisms of the guide shaft and the punching shaft are mutually independent, so that the guide shaft can extend forwards firstly, and the punching shaft can punch forwards. In the present embodiment, the drive mechanisms of the press shaft and the guide shaft are both provided for cylinder driving. In specific implementation, the driving mechanism can be set to be driven by a cylinder, electrically or in other driving modes. The setting mode that cup joints with punching press axle and guiding axle is unanimous, and the drive mechanism of punching press axle and guiding axle also adopts the mode of coaxial cup jointing, and effectual operating space that has utilized.

In order to ensure that the position of the mounting hole is fixed when the seat tray is placed, the seat tray is placed on the fixing table during installation, the positioning fixture is arranged from the inside, lateral pressure is generated on the seat tray through the movement of the inner clamping arm to the two sides of the outer side in the positioning fixture, the seat tray is fixed, and the seat tray is prevented from displacing. The top of interior arm lock sets up to the button head leading end and makes interior arm lock when aiming at the mounting hole, can finely tune the mounting hole position through the circular arc of button head week side, guarantees that the mounting hole location is in the position coaxial with interior arm lock, has further ensured the installation accuracy of powder cover. The arrangement of the front stop block and the rear stop block enables the movable position of the inner clamping arm to be limited, so that the movable path of the inner clamping arm can not deviate, and the inner clamping arm still keeps the positioning accuracy when being reused. The seat tray has various types, and the inner wall of the tray of one type of seat tray is provided with a side wall which is arranged along the edge of the mounting hole and protrudes inwards. When the seat tray is installed, the front stop block and the rear stop block can directly limit the protruded side walls, the installation holes are limited in the sliding grooves, and hole position alignment can be carried out without the round head guide ends. The moving direction of the inner clamping arm is limited by the positions of the sliding grooves formed by the front stop blocks and the rear stop blocks on the two sides, and is guided by the linear rail arranged at the bottom, so that the moving direction is ensured not to deviate.

Except the fixed part that sets up at the seat tray inboard, the anterior portion of fixed station still only is equipped with two portions of lifting in the outside of seat tray by a short time, plays anterior supporting role, and the rear side still is equipped with the saddle, plays the supporting role at rear portion for the seat tray of bottom surface unevenness can be steady erect on the fixed station, and the upper and lower position can be fixed. The operating lever provided on the seat tray can be erected on the lifting part. The cooperation of seat tray outside portion of lifting and inboard positive stop is spacing between portion of lifting and positive stop with the lateral wall of seat tray for the position has obtained further injecing about the seat tray. The operating rod on the seat tray is usually in the shape of a shaft rod and is erected in the lifting groove to be limited by the front and rear blocking parts, so that the front and rear positions of the seat tray can be fixed.

The powder sleeve mounting machine provided with the positioning mechanism carries out multiple positioning and fine adjustment on alignment of the powder sleeve and the mounting hole during mounting through fixing of the fixing table and multiple parts such as the inner clamping arm, the front stop block, the rear stop block, the lifting part, the guide shaft and the like, so that the mechanical automation of powder sleeve mounting is realized, and the high precision of mounting is ensured.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the principles and spirit of the present invention.

Claims (10)

1. The utility model provides a seat tray powder cover installation machine which characterized in that: comprises an operation table, a feeding mechanism (7), a positioning mechanism (8) and an installation mechanism (9) which are arranged on the operation table;

a positioning clamp is arranged on the positioning mechanism;

a feeding port (71) is arranged at the tail end of the feeding mechanism;

the mounting mechanism comprises a guide assembly and a punching assembly, the guide assembly comprises a guide shaft (91) capable of axially moving, the punching assembly comprises a punching shaft (92) capable of axially moving, and the guide shaft penetrates through the center of the punching shaft;

the axial direction of guiding axle (91) and punching press axle (92) is towards positioning fixture, material loading mouth (71) set up on guiding axle (91) and punching press axle (92) are towards positioning fixture's movement path.

2. The seat tray powder sleeve mounter according to claim 1, wherein: the top end of the guide shaft (91) is conical.

3. The seat tray powder sleeve mounter according to claim 1, wherein: the guide shaft (91) and the stamping shaft (92) are respectively provided with a driving mechanism, and the driving mechanisms can drive the guide shaft (91) and the stamping shaft (92) to realize mutually independent axial movement.

4. A seat tray powder sleeve mounter according to claim 3, wherein: the driving mechanism (93) of the guide shaft penetrates through the center of the stamping shaft driving mechanism, and the stamping shaft driving mechanism (94) is sleeved on the outer periphery side of the guide shaft driving mechanism.

5. The seat tray powder sleeve mounter according to claim 1, wherein: comprises a fixed table for positioning and a positioning clamp arranged on the fixed table; the positioning fixture comprises two inner clamping arms (2) which can be close to or far away from each other in the axial direction, the inner clamping arms (2) are arranged inside the seat tray (1), and the two inner clamping arms (2) are respectively supported on the two inner walls of the seat tray (1) to fix the seat tray (1).

6. The seat tray powder sleeve mounter according to claim 5, wherein: the supporting top end (21) of the inner clamping arm (2) is a round head guide end.

7. The seat tray powder sleeve mounter according to claim 5, wherein: the positioning fixture further comprises a front stop block (31) and a rear stop block (32), the front stop block (31) and the rear stop block (32) are arranged inside the seat tray (1), a sliding groove is formed between the front stop block (31) and the rear stop block (32), and the inner clamping arm (2) is arranged in the movable groove and can slide in the movable groove.

8. The seat tray powder sleeve mounter according to claim 5, wherein: the fixed station comprises a bracket arranged on the front side and a supporting platform (6) arranged on the rear side, and the bracket at least comprises two supporting and lifting parts (5) positioned on the outer side of the seat tray.

9. The seat tray powder sleeve mounter according to claim 8, wherein: the lifting part (5) comprises a front blocking part (51), a rear blocking part (52) and a lifting groove (53) formed between the front blocking part (51) and the rear blocking part (52).

10. The seat tray powder sleeve mounter according to claim 1, wherein: feeding mechanism (7) are including vibration dish (72) that can realize the selection material to and material loading track (73) and material loading mouth (71), be provided with the screening limit rail on the vibration dish inside wall, the inclined plane of screening limit rail for to vibration dish opening part lateral wall slope.

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