CN219212207U

CN219212207U - Bolt skeleton kludge

Info

Publication number: CN219212207U
Application number: CN202320075557.6U
Authority: CN
Inventors: 高飞; 何美
Original assignee: Wuhu Hongxin Intelligent Equipment Co ltd
Current assignee: Wuhu Hongxin Intelligent Equipment Co ltd
Priority date: 2023-01-10
Filing date: 2023-01-10
Publication date: 2023-06-20
Anticipated expiration: 2033-01-10

Abstract

The utility model discloses a bolt framework assembling machine, which comprises the following steps: the device comprises a working platform, a clamping plate and a fixing mechanism; the upper surface part of work platform inwards sunken formation with the placing groove of bolt looks adaptation, be located placing groove's periphery equidistant and be provided with at least three grip blocks that can gather together or disperse and be used for carrying out the centre of a circle to the bolt head, be located placing groove directly over the level and liftable be provided with be used for fixation nut and drive the nut rotate in order to assemble the fixed establishment on the bolt, fixed establishment includes: the device comprises a fixed shell, a push plate, a fixed rod and a fixed sucker; the bolt skeleton kludge overcomes prior art and contradicts at the head of bolt and starts the motor through driving the disc rotation in order to drive the bolt rotation and realize the constitution of bolt and nut through the disc of screwing up the mechanism, however, the disc appears slipping the phenomenon easily with the head of bolt in the contact in-process, can't guarantee that bolt and nut can successfully constitute the problem together.

Description

Bolt skeleton kludge

Technical Field

The utility model relates to the field of assembling machines, in particular to a bolt framework assembling machine.

Background

Bolts and nuts are the most common standard threaded members, typically separate sets of bolts and nuts, but are often used in a number of specialty industries where an assembly machine is required to assemble the bolts and nuts together by screwing.

And (3) searching: the Chinese patent application number is CN201921703207.X, a bolt and nut assembling tool is disclosed, and a nut clamping mechanism is arranged on the working frame and used for clamping and fixing a hexagonal nut; the screwing mechanism is arranged on the working frame and can slide along the length direction of the bolt, and is used for rotating the bolt; the bolt clamping mechanism is positioned between the nut clamping mechanism and the screwing mechanism and is arranged on the working frame and used for clamping bolts; the clamping center of the nut clamping mechanism is overlapped with the rotation center of the screwing mechanism.

The inventors have found that the following problems exist with the prior art in the practice of the present utility model:

in the use, contradict at the head of bolt and start the motor through the disc of screwing up the mechanism and rotate in order to drive the bolt rotation and realize the constitution of bolt and nut through driving the disc, however, the disc appears slipping phenomenon easily with the head of bolt in the contact in-process, can't guarantee that bolt and nut can successfully be constituteed together (in addition, because need have great frictional force just can rotate through pivoted disc drive bolt between disc and the bolt, will lead to in the equipment like this, will produce wearing and tearing between disc and the bolt head, on the one hand reduced the quality of bolt, when the disc damaged to a certain extent, also can hardly guarantee to drive the bolt to rotate along its central axis accurately, still can successfully be constituteed together to the law assurance bolt and nut.

Therefore, the present utility model provides a bolt skeleton assembly machine that can stably and reliably fix a bolt and a nut on a work platform and a fixing mechanism, respectively, prevent the two from being offset during the assembly process, and drive the fixing mechanism to rotate while lifting so as to accurately assemble the nut on the bolt.

Disclosure of Invention

The utility model aims to solve the technical problems that in the prior art, the disc of the screwing mechanism is abutted against the head of a bolt and the motor is started to drive the bolt to rotate by driving the disc to rotate so as to realize the composition of the bolt and the nut, but the disc and the head of the bolt are easy to slip in the contact process and can not ensure that the bolt and the nut can be successfully combined together, so that the utility model provides a bolt framework assembling machine which can stably and reliably fix the bolt and the nut on a working platform and a fixing mechanism respectively in the use process, prevent the bolt and the nut from shifting in the assembly process, and drive the fixing mechanism to rotate while lifting so as to accurately assemble the nut on the bolt.

In order to achieve the above object, the present utility model provides a bolt skeleton assembly machine including: the device comprises a working platform, a clamping plate and a fixing mechanism;

the upper surface part of work platform that is the level setting inwards sunken formation with the placing groove of bolt looks adaptation, be located place the periphery equidistant at recess be provided with at least three can gather together or disperse and be used for carrying out the fixed grip block of centre of a circle to the bolt head, be located place the level just above the recess and liftable be provided with be used for fixation nut and drive the nut rotate in order to assemble the fixed establishment on the bolt, fixed establishment includes: the device comprises a fixed shell, a push plate, a fixed rod and a fixed sucker; wherein,,

the center department at the top of the fixed shell body, which is downward in opening and the inner cavity of which can accommodate the nut, is vertically penetrated and provided with a through hole for the bolt to pass through, the opening of the fixed shell body is horizontally provided with a plurality of pushing plates which can be close to the opening along the circumferential direction of the fixed shell body at equal intervals, each pushing plate is vertically and fixedly provided with a fixed rod which extends into the fixed shell body from the opening towards the opening, and the top end of each fixed rod is fixedly provided with a fixed sucker which can be adsorbed on the end part of the nut.

Preferably, the fixing mechanism further comprises a first cylinder for driving each push plate to approach toward the opening of the fixing housing; wherein,,

the open part of the fixed shell is provided with a plurality of fixed grooves corresponding to the pushing plates one by one along the circumferential direction at equal intervals, each fixed groove is vertically and fixedly provided with a first cylinder, and the free end of a piston rod of the fixed shell, which is vertically arranged, extends out of the fixed groove and is fixed on the pushing plates.

Preferably, a bracket is vertically and fixedly arranged beside the working platform, a lifting plate is horizontally and liftably arranged below the bracket through at least two third cylinders which are vertically and fixedly penetrated and arranged at intervals, and a rotatable fixing mechanism is vertically and fixedly penetrated and arranged on the lifting plate.

Preferably, the assembling machine further comprises a power mechanism for driving the fixing mechanism to rotate, and the power mechanism comprises: a driven gear, a power motor and a driving gear; wherein,,

the fixed shell vertically penetrates through and is fixed on the lifting plate through a bearing, a driven gear is fixedly arranged on the outer surface of the fixed shell, a power motor is horizontally and fixedly arranged on the upper surface of the lifting plate beside the fixed shell, and a driving gear meshed and connected with the driven gear is fixedly arranged on an output shaft of the fixed shell, wherein the driving gear is horizontally arranged.

Preferably, the assembling machine further comprises a transmission mechanism for synchronously driving the plurality of clamping plates to gather or disperse each other, and the transmission mechanism comprises: the device comprises a transmission rack plate, a transmission gear, an incomplete gear and a transmission rod; wherein,,

the upper surface level of the work platform that is located one side of placing groove is provided with can be towards place the transmission rack board that the recess removed, and the fixed grip block that is provided with in tip of transmission rack board is located the both sides of transmission rack board are respectively level and rotationally are provided with its transmission gear of meshing connection, are located two sets of transmission gear's one side is respectively level rotationally be provided with rather than meshing connection's incomplete gear, and two sets of incomplete gear is fixed with two respectively through the transfer line the grip block.

Preferably, the assembly machine further comprises a second cylinder for driving the movement of the rack plate; wherein;

the second cylinder is horizontally arranged on the upper surface of the working platform, and a piston rod of the second cylinder which is horizontally arranged is fixed on the end part of the transmission rack plate.

Preferably, the upper surface portion of the working platform located right below the driving rack plate is recessed inwards to form an assembling chute parallel to the driving rack plate, at least two assembling sliding blocks are arranged at intervals in a sliding manner, and the upper end portions of the two assembling sliding blocks extend out of the assembling chute and are fixed on the driving rack plate.

According to the technical scheme, the bolt framework assembling machine provided by the utility model has the beneficial effects that: the method comprises the steps that the head of a bolt to be assembled is downwards and vertically placed in the placing groove, three clamping plates with arc structures are moved to enable the clamping plates to synchronously approach the placing groove along the upper surface of the working platform and clamp the head of the bolt so as to clamp and fix the bolt, in the assembling process, the bolt is prevented from being deviated to cause assembly failure, after the bolt is clamped and fixed, the pushing plates are moved away from the fixing shell until the fixing sucker fixed on the pushing plates through the fixing rod stretches out of the opening of the fixing shell to the position outside the opening of the fixing shell, the nut to be assembled is horizontally placed in the fixing shell, the upper end of the nut horizontally abuts against the inner fixed top end of the fixing shell, then the pushing plates are moved to the fixing shell until the fixing sucker corresponding to the fixing shell is adsorbed on the end of the nut, and then the fixing mechanism is driven to descend along the vertical direction, in the descending process, the fixing shell is rotated so that the fixing shell drives the fixing shell to rotate together, and accordingly the nut can be assembled quickly, and the accuracy of the nut can be assembled quickly.

Additional features and advantages of the utility model will be set forth in the detailed description which follows; and none of the utility models are related to the same or are capable of being practiced in the prior art.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model, and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the description serve to explain, without limitation, the utility model. In the drawings:

FIG. 1 is a schematic view of a construction of a bolt skeleton assembly machine provided in a preferred embodiment of the present utility model;

fig. 2 is a schematic structural view of a fixing mechanism of a bolt frame assembling machine provided in a preferred embodiment of the present utility model;

FIG. 3 is a schematic view of the construction of a work platform of a bolt frame assembly machine provided in a preferred embodiment of the present utility model;

fig. 4 is an assembly schematic diagram of a transmission mechanism and a clamping plate of a bolt skeleton assembly machine provided in a preferred embodiment of the present utility model.

Description of the reference numerals

1. A working platform; 2. placing the groove; 3. a clamping plate; 4. a lifting plate; 5. a fixing mechanism; 501. a fixed housing; 502. a first cylinder; 503. a push plate; 504. a fixed rod; 505. fixing a sucker; 6. a transmission mechanism; 601. a drive rack plate; 602. a transmission gear; 603. an incomplete gear; 604. a transmission rod; 7. a power mechanism; 701. a driven gear; 702. a power motor; 703. a drive gear; 8. a second cylinder; 9. a third cylinder; 10. assembling a chute; 11. assembling a sliding block; 12. and (3) a bracket.

Detailed Description

The following describes specific embodiments of the present utility model in detail with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the utility model, are not intended to limit the utility model.

As shown in fig. 1 to 4, the bolt skeleton assembly machine provided by the utility model comprises: the device comprises a working platform 1, a clamping plate 3 and a fixing mechanism 5;

the upper surface part of work platform 1 that is the level setting inwards sunken formation with bolt looks adaptation place recess 2, be located place recess 2's periphery equidistant be provided with at least three can gather together or disperse and be used for carrying out centre gripping fixed grip block 3 to bolt head to its centre of a circle, be located place recess 2 directly over the level and liftable be provided with be used for fixation nut and drive the nut rotate in order to assemble the fixed establishment 5 on the bolt with it, fixed establishment 5 includes: a fixed housing 501, a push plate 503, a fixed rod 504 and a fixed suction cup 505; wherein,,

the center department at the top of the fixed shell 501 of uncovered downwardly and inner chamber can hold the nut vertically runs through and has offered the through-hole that supplies the bolt to pass, and its uncovered department is provided with the polylith push pedal 503 that can be close to towards the uncovered along its circumferencial direction equidistant level, and every the push pedal 503 is provided with the dead lever 504 that stretches into its inside from the uncovered department towards the equal vertical fixation of uncovered department, and the fixed sucking disc 505 that can adsorb on the nut tip that is equipped with in the top of every dead lever 504.

In the above scheme, the head of the bolt to be assembled is downward and vertically placed in the placing groove 2, and three clamping plates 3 with arc structures are moved, so that a plurality of clamping plates 3 are synchronously moved towards the placing groove 2 along the upper surface of the working platform 1 and clamp the head of the bolt, so as to clamp and fix the bolt, in the assembling process, the bolt is prevented from being deviated to cause assembly failure, after the bolt is clamped and fixed, a plurality of push plates 503 are moved away from the fixed shell 501 until a fixed sucker 505 fixed on the push plates 503 through a fixed rod 504 stretches out of an opening of the fixed shell 501 to an outside position of the opening, a nut to be assembled is horizontally placed in the fixed shell 501, the upper end of the nut horizontally abuts against the fixed top end in the fixed shell 501, then a plurality of push plates 503 are moved towards the fixed shell 501 again until the fixed sucker corresponding to the fixed sucker is adsorbed on the end of the nut, and then the fixed mechanism 5 is driven to descend in the vertical direction, and in the descending process, the fixed shell 501 is rotated to enable the nut to rotate, so that the nut can be assembled quickly and the accuracy of the nut can be improved.

After the assembly is finished, the clamping plates 3 are driven to be far away from the placing grooves 2 so as to release the clamping of the clamping plates 3 to the bolts, the fixing mechanism 5 is driven to be lifted to a certain position, and in the lifting process, the assembled nuts and bolts are driven to be lifted together, then, the push plates 503 are moved to be far away from the fixing shell 501 so that the fixing suckers 505 corresponding to the push plates 503 one by one leave from the opening of the fixing shell 501, the nuts assembled on the bolts leave from the fixing shell 501 from the opening of the fixing shell 501, the bolts assembled with the nuts are lifted upwards from the top of the nuts for a certain distance, and the nuts and the bolts are horizontally removed from the upper parts of the fixing suckers 505, so that the unloading operation is completed.

In addition, since the plurality of clamping plates 3 can automatically correct the bolts in the process of synchronously gathering the clamping plates along the radial direction of the placement groove 2, the circle center of the head of the bolts and the circle center of the placement groove 2 can be positioned on the same straight line, so that the circle centers of the nuts fixed on the fixing mechanism 5, the placement groove 2 and the bolts are positioned on the same vertical line, and the nuts fixed on the fixing mechanism 5 can be ensured to be arranged on the bolts.

In the above-mentioned scheme, a rubber pad is disposed on a side of each clamping plate 3 facing the bolt, and a rubber pad is disposed in the inner cavity of the fixed housing 501, so that friction is increased, and slipping between the clamping plate 3 and the bolt is prevented during the assembly process; the slipping phenomenon between the fixed housing 501 and the nut is prevented, so that the reliability and stability of clamping the bolts by the clamping plates 5 are further improved, and the reliability and stability of fixing the nuts by the fixed housing 501 are further improved, and therefore, the assembly precision of the device is improved, and the assembly failure caused by the deviation of the bolts is avoided.

In a preferred embodiment of the present utility model, the fixing mechanism 5 further includes a first cylinder 502 for driving each of the push plates 503 toward the opening of the fixing housing 501; wherein,,

the open part of the fixed housing 501 is provided with a plurality of fixed grooves corresponding to the push plates 503 one to one along the circumferential direction at equal intervals, each fixed groove is vertically and fixedly provided with a first cylinder 502, and the free end of the piston rod of the fixed housing is vertically arranged and extends out of the fixed groove and is fixed on the push plates 503.

In the above-mentioned scheme, during use, the push plates 503 are driven to approach or depart from the fixed housing 501 by driving the expansion and contraction of the piston rods of the first air cylinders 502, so that the fixed sucker 505 fixed on each push plate 503 through the fixed rod 504 can be adsorbed on the nut accommodated in the inner cavity of the fixed housing 501, thereby realizing the fixation and release of the nut.

In a preferred embodiment of the present utility model, a bracket 12 is vertically fixed beside the working platform 1, at least two third cylinders 9 which are vertically penetrating through and arranged at intervals are horizontally and liftably arranged below the bracket 12, and a lifting plate 4 is vertically penetrating through and arranged with a rotatable fixing mechanism 5.

In the above scheme, when in use, the lifting plate 4 is driven to lift in the vertical direction by driving the third cylinder 9, and the rotatable fixing mechanism 5 is driven to lift in the vertical direction in the lifting process.

In a preferred embodiment of the present utility model, the assembling machine further comprises a power mechanism 7 for driving the fixing mechanism 5 to rotate, and the power mechanism 7 comprises: a driven gear 701, a power motor 702, and a driving gear 703; wherein,,

the fixed housing 501 is vertically fixed on the lifting plate 4 through a bearing, a driven gear 701 is fixedly arranged on the outer surface of the fixed housing 501, a power motor 702 is horizontally and fixedly arranged on the upper surface of the lifting plate 4 beside the driven gear 701, and a driving gear 703 which is in meshed connection with the driven gear 701 is fixedly arranged on an output shaft of the fixed housing.

In the above-mentioned scheme, in use, the driving motor 702 is driven, and the fixed housing 501 is driven to rotate under the meshing relationship of the driving gear 703 and the driven gear 701, so as to rotate the nut fixed inside the fixed housing 501, so as to screw the nut onto the bolt, and thus, the nut is assembled on the bolt.

In a preferred embodiment of the present utility model, the assembling machine further comprises a transmission mechanism 6 for synchronously driving the plurality of clamping plates 3 to be gathered or dispersed with each other, and the transmission mechanism 6 comprises: a drive rack plate 601, a drive gear 602, an incomplete gear 603 and a drive rod 604; wherein,,

the upper surface level of work platform 1 that is located by placing recess 2 is provided with can be towards place recess 2 removes transmission rack board 601, and the fixed grip block 3 that is provided with in tip of transmission rack board 601 is located the both sides of transmission rack board 601 are respectively horizontal and rotationally are provided with its meshing connection's drive gear 602, are located two sets of drive gear 602 are respectively horizontal rotationally be provided with its meshing connection's incomplete gear 603, and two sets of incomplete gear 603 are fixed with two respectively through transfer line 604 grip block 3.

In the above-mentioned scheme, during use, the driving rack plate 601 drives the clamping plate 3 at the end of the clamping plate to approach along the radial direction of the placement groove 2, the driving rack plate 601 drives the two sets of driving gears 602 to rotate under the meshing relationship with the two sets of driving gears 602, and during the rotation, the two sets of incomplete gears 603 connected with the two sets of driving gears are rotated in opposite directions, and during the opposite rotation, the two remaining clamping plates 3 and the other clamping plate 3 are respectively driven by the driving rod 604 to synchronously move along the radial direction of the placement groove 2 and draw close to the clamping plate so as to clamp and fix the bolt vertically placed in the prevention groove 2.

When the driving rack board 601 drives the clamping board 3 at the end part of the driving rack board to move away from the placing groove 2, under the combined action of the two groups of driving gears 602 meshed with the driving rack board 601, the two groups of incomplete gears 603 are driven to reversely rotate, and in the process of reversely rotating, the two rest clamping boards 3 and the other clamping boards 3 are synchronously separated from the placing groove 2 along the radial direction of the placing groove 2 through the driving rods 604 respectively, so that the release of bolt fixation is realized.

In a preferred embodiment of the utility model, the assembly machine further comprises a second cylinder 8 for driving the movement of the rack plate 601; wherein;

the second air cylinder 8 is horizontally arranged on the upper surface of the working platform 1, and a piston rod of the second air cylinder is horizontally arranged and fixed on the end part of the gear rack plate 601.

In the above-mentioned scheme, during use, the driving rack plate 601 is driven to linearly reciprocate along the upper surface of the processing platform 1 by driving the expansion and contraction of the piston rod of the second cylinder 8.

In a preferred embodiment of the present utility model, the upper surface portion of the work platform 1 located directly under the rack plate 601 is recessed inward to form a fitting chute 10 parallel to the rack plate 601, and the fitting chute 10 is provided with at least two fitting sliders 11 at a distance and slidably, and upper end portions of the two fitting sliders 11 protrude from the fitting chute 10 and are fixed to the rack plate 601.

In the above-mentioned scheme, through the cooperation use of the assembly chute 10 and the assembly slide 11, it is ensured that the rack plate 601 can smoothly and reliably linearly reciprocate in the horizontal direction.

In the above-mentioned scheme, the air cylinders mentioned in the present embodiment are all conventional technical means, so the specific structure and use principle thereof will not be described herein again. In addition, the specification and model of the cylinder used can be properly selected according to the actual use condition.

In summary, the bolt framework assembling machine provided by the utility model overcomes the problems that in the prior art, the disc of the screwing mechanism is abutted against the head of the bolt and the motor is started to drive the bolt to rotate by driving the disc to rotate so as to realize the composition of the bolt and the nut, but the slipping phenomenon easily occurs between the disc and the head of the bolt in the contact process, and the bolt and the nut can not be successfully combined together.

The preferred embodiments of the present utility model have been described in detail above with reference to the accompanying drawings, but the present utility model is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present utility model within the scope of the technical concept of the present utility model, and all the simple modifications belong to the protection scope of the present utility model.

In addition, the specific features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations are not described further.

Moreover, any combination of the various embodiments of the utility model can be made without departing from the spirit of the utility model, which should also be considered as disclosed herein.

Claims

1. The utility model provides a bolt skeleton kludge which characterized in that, bolt skeleton kludge includes: the device comprises a working platform (1), a clamping plate (3) and a fixing mechanism (5);

the utility model provides a be level setting upper surface part inwards sunken formation and the placing groove (2) of bolt looks adaptation of work platform (1), be located the periphery equidistant setting of placing groove (2) can gather together or disperse and be used for carrying out centre gripping fixed grip block (3) to its centre of a circle to the bolt head, be located place directly over level and liftable ground of groove (2) be provided with be used for fixation nut and drive nut rotation in order to assemble fixed establishment (5) on the bolt with it, fixed establishment (5) include: a fixed shell (501), a push plate (503), a fixed rod (504) and a fixed sucker (505); wherein,,

the center department at the top of fixed casing (501) that uncovered and inner chamber can hold the nut vertically runs through and has offered the through-hole that supplies the bolt to pass, and its uncovered department is provided with along its circumferencial direction equidistant level and can be towards polylith push pedal (503) that uncovered is close to, and every push pedal (503) are all vertical fixed being provided with from uncovered stretching into its inside dead lever (504) towards uncovered department, and the fixed sucking disc (505) that can adsorb on the nut tip that is equipped with in top of every dead lever (504).

2. The bolt frame assembly machine according to claim 1, wherein the fixing mechanism (5) further comprises a first cylinder (502) for driving each push plate (503) toward the opening of the fixing housing (501); wherein,,

the open part of the fixed shell (501) is provided with a plurality of fixed grooves corresponding to the pushing plates (503) one by one along the circumferential direction at equal intervals, each fixed groove is vertically and fixedly provided with a first air cylinder (502), and the free end of a piston rod of the fixed shell is vertically arranged, extends out of the fixed groove and is fixed on the pushing plates (503).

3. The bolt framework assembling machine according to claim 1, wherein a bracket (12) is vertically and fixedly arranged beside the working platform (1), a lifting plate (4) is horizontally and liftably arranged below the bracket (12) through at least two third air cylinders (9) which are vertically and penetratingly arranged at intervals, and a rotatable fixing mechanism (5) is vertically and penetratingly arranged on the lifting plate (4).

4. A bolt skeleton assembly machine according to claim 3, characterized in that the assembly machine further comprises a power mechanism (7) for driving the fixing mechanism (5) in rotation, the power mechanism (7) comprising: a driven gear (701), a power motor (702), and a driving gear (703); wherein,,

the fixed shell (501) vertically penetrates through and is fixed on the lifting plate (4) through a bearing, a driven gear (701) is fixedly arranged on the outer surface of the fixed shell (501), a power motor (702) is horizontally and fixedly arranged on the upper surface of the lifting plate (4) beside the fixed shell, and a driving gear (703) which is in meshing connection with the driven gear (701) is fixedly arranged on an output shaft of the fixed shell.

5. Bolt skeleton assembly machine according to claim 1, characterized in that it further comprises a transmission mechanism (6) for synchronously driving a plurality of said clamping plates (3) to converge or diverge with respect to each other, said transmission mechanism (6) comprising: a drive rack plate (601), a drive gear (602), an incomplete gear (603) and a drive rod (604); wherein,,

the upper surface level that is located place recess (2) one side work platform (1) is provided with can be directed place recess (2) removal transmission rack board (601), and the fixed grip block (3) that is provided with in tip of transmission rack board (601), be located both sides of transmission rack board (601) are respectively horizontal and rotationally are provided with its meshing connection's drive gear (602), are located two sets of drive gear (602) one side respectively horizontal rotationally be provided with rather than meshing connection's incomplete gear (603), and two sets of incomplete gear (603) are fixed with two respectively through transfer line (604) grip block (3).

6. Bolt skeleton assembly machine according to claim 5, characterized in that it further comprises a second cylinder (8) for driving the movement of the rack plate (601); wherein;

the second air cylinder (8) is horizontally arranged on the upper surface of the working platform (1), and a piston rod of the second air cylinder is horizontally arranged and is fixed on the end part of the transmission rack plate (601).

7. Bolt skeleton assembly machine according to claim 5 or 6, characterized in that the upper surface part of the working platform (1) located directly under the gear rack plate (601) is recessed inwards to form an assembly runner (10) parallel to the gear rack plate (601), the assembly runner (10) is provided with at least two assembly sliders (11) at intervals and slidably, and the upper end parts of the two assembly sliders (11) protrude from the assembly runner (10) and are fixed on the gear rack plate (601).