CN215751502U

CN215751502U - Bowl pressing and marking machine for vehicle body elbow

Info

Publication number: CN215751502U
Application number: CN202122142681.3U
Authority: CN
Inventors: 初建宇; 陈乃文
Original assignee: Shandong Daqi Intelligent Equipment Co ltd
Current assignee: Shandong Daqi Intelligent Equipment Co ltd
Priority date: 2021-09-06
Filing date: 2021-09-06
Publication date: 2022-02-08
Anticipated expiration: 2031-09-06

Abstract

The utility model discloses a bowl pressing and marking machine for a vehicle body elbow, and mainly relates to the field of vehicle body elbow bowl pressing and marking equipment. The system comprises a rack, a marking piece, a pressing piece and a centralized control system, wherein the marking piece, the pressing piece and the centralized control system are all arranged on the rack, and the marking piece and the pressing piece are connected with the centralized control system; beat the cooperation of mark piece and set up and hold a one side pressing, just beat the mark piece including beating mark end governing system and beating mark casing governing system, it includes support piece and driving piece to press to hold the piece, support piece tip, driving piece output shaft tip all set up and press the bowl mould, press the bowl mould to support the back to the work piece, press the work piece through the driving piece and hold. The utility model has the beneficial effects that: can realize the mark operation of beating to the return bend spare on the basis that effective position was injectd carries out the return bend spare to when carrying out position limit to the return bend spare, realize carrying out the pressure bowl operation of bearing frame to the opening at return bend spare both ends, with the production speed of guarantee part.

Description

Bowl pressing and marking machine for vehicle body elbow

Technical Field

The utility model relates to the field of marking equipment for a bowl pressing of a vehicle body bent pipe, in particular to a bowl pressing and marking machine for a vehicle body bent pipe.

Background

For marking equipment, in order to realize regularity of part production and machining, marking operation on a machined part needs to be realized, and then label recording of the machined part is realized. As shown in fig. 9, the conventional bent pipe frame is mostly applied to a bicycle, so as to implement the installation of the bicycle frame. For the elbow support body, when the elbow part is marked, the elbow is easily subjected to position change phenomena such as looseness, left and right positions and the like due to the effect of the clamping position when the elbow is impacted by the marking part, so that the marking part cannot be normally applied to the marking position of the elbow. And for the bent pipe fitting, bowl pressing operation needs to be carried out at two ends of the bent pipe fitting during installation, namely, the bearing seat is pressed into the front end and the rear end of the bent pipe, so that subsequent installation operation of the bearing is facilitated. Therefore, need set up a pressure bowl marking machine for return bend, can impress the bearing frame smoothly to the return bend under the condition at return bend both ends, carry out the rigidity to the return bend, beat mark operation to the return bend, under the condition of once installing promptly, realize pressing the bowl and beat two kinds of operations of mark to improve the machining efficiency of return bend work piece.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a bowl pressing and marking machine for a bent pipe of a vehicle body, which can realize marking operation on the bent pipe on the basis of limiting the effective position of the bent pipe, and can realize bowl pressing operation on openings at two ends of the bent pipe when the position of the bent pipe is limited, so that the processing speed of the bent pipe is increased, and the production speed of a factory is guaranteed.

In order to achieve the purpose, the utility model is realized by the following technical scheme:

the bowl pressing and marking machine for the vehicle body elbow is characterized in that: the system comprises a rack, a marking piece, a pressing piece and a centralized control system, wherein the marking piece, the pressing piece and the centralized control system are all arranged on the rack, and the marking piece and the pressing piece are connected with the centralized control system;

the cooperation of marking piece sets up in pressing and holding one side, just marking piece includes

The marking end adjusting system comprises a marking end, a two-way adjusting mechanism and a marking shell, wherein the two-way adjusting mechanism is matched with the marking end connected with a power source and arranged on the marking shell, and the two-way adjusting mechanism drives the marking end to move transversely and longitudinally;

and

the marking shell adjusting system is a three-axis linkage displacement adjusting mechanism and is connected with the marking end adjusting system to drive the marking end adjusting system to realize three-dimensional adjustment;

the pressing and holding piece comprises a supporting piece and a driving piece, wherein the end part of the supporting piece and the end part of an output shaft of the driving piece are both provided with a pressing bowl die, and the pressing bowl die is used for pressing and holding the workpiece through the driving piece after supporting the workpiece.

The marking shell adjusting system is connected with the marking end adjusting system through a connecting piece, and a progressive adjusting piece is arranged at the connecting part of the connecting piece and the marking end adjusting system; the progressive adjusting piece is a telescopic piece, the telescopic end of the progressive adjusting piece is perpendicular to the workpiece machining face and can drive the marking end adjusting system to move forwards and backwards.

The connecting piece comprises a rotating shaft and a margin component, the three-shaft linkage displacement adjusting mechanism is connected with the marking shell through the rotating shaft, and the margin component is arranged on the outer side of the rotating shaft in a matching mode; the allowance assembly comprises a limiting groove lantern ring and an arc block, and the limiting groove lantern ring is sleeved on the outer side of the rotating shaft and is connected with the three-axis linkage displacement adjusting mechanism; the arc block is arranged in the groove of the limiting groove lantern ring in a matching manner and is connected with the marking shell; and clearance allowance exists in the matching between the limiting groove lantern ring and the arc block.

A position sensor is arranged outside the marking shell in a matched mode and connected with the centralized control system; the marking device is characterized in that a supporting component is arranged on the outer side of the marking shell, the supporting component is a supporting roller, and the supporting roller is matched with the supporting roller and arranged on the outer side of the supporting component.

The regulating part that advances one by one is the cylinder that advances one by one, just the cylinder cooperation that advances one by one is provided with the direction optical axis, the cylinder that advances one by one is flexible can drive and beat the mark casing and remove along the direction optical axis.

The bowl pressing die comprises a connecting end and a bowl pressing end, the bowl pressing die is arranged in a hollow mode, and the connecting end is provided with a detachable structure which is detachably connected with the end part of the supporting piece and the end part of the output shaft of the driving piece; the bowl pressing die is provided with a through hole communicated with the inside, and the inner space of the bowl pressing die is communicated with the small hole formed in the bowl pressing end.

The three-axis linkage displacement adjusting mechanism comprises a first sliding guide rail and an adjusting handle, the first sliding guide rail is arranged in an intersecting mode, and is connected with the adjusting handle through a screw adjusting mechanism to adjust the position of the marking shell.

The bidirectional adjusting mechanism comprises second sliding guide rails and a driving piece, the two second sliding guide rails are arranged in a crossed mode, and the marking end is arranged on one of the second sliding guide rails in a sliding mode; the driving piece is a driving motor, and the driving motors drive the marking end to move through the belt transmission mechanism.

Compared with the prior art, the utility model has the beneficial effects that:

1. for the marking shell, firstly, after the marking shell is contacted with the bent pipe workpiece, because the bent pipe workpiece cannot be welded or mounted according to an accurate angle during mounting setting and initial welding, the marking surface of the bent pipe workpiece is not parallel to the moving displacement surface of the marking end, so that the marking end cannot clearly mark the bent pipe workpiece. And the surplus subassembly that this device set up allows to beat the mark casing and rotates, and then the guarantee beats the mark casing and can carry out micro-angle and adjust for beat on the mark casing can be parallel and laminate the return bend work piece, beat the mark end in order to guarantee and beat the mark to the return bend work piece, the return bend work piece is under the condition that does not rock, beat the mark operation to the return bend work piece.

2. The pressure bowl mould that this device set up connects emollient and sets up, make to press to hold the piece and hold when the effect is held to automobile body pipe fitting, can make emollient let in inside the pressure bowl mould, and the aperture department that the pressure bowl end that is pressing the bowl mould set up flows, and then make emollient and bearing frame and pipe fitting port contact, make under the effect of emollient, let the frictional force between bearing frame and the pipe fitting reduce, make things convenient for the bearing frame to impress inside the port of pipe fitting, the pressure bowl face that also makes the bearing end simultaneously adheres to there is emollient, in order to facilitate the installation work of follow-up bearing.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present invention.

Fig. 2 is a schematic diagram of the overall structure of the present invention.

FIG. 3 is a schematic view of the structure of the connecting part of the present invention.

Fig. 4 is a schematic view of the structure of the connecting part of the utility model.

FIG. 5 is a schematic view of the marking housing portion of the present invention.

FIG. 6 is a schematic view of the marking housing portion of the present invention.

FIG. 7 is a schematic structural diagram of the bidirectional adjustment mechanism of the present invention.

FIG. 8 is a schematic structural diagram of the bidirectional adjustment mechanism of the present invention.

FIG. 9 is a schematic view of the structure of the holding part of the present invention.

FIG. 10 is a schematic view of the structure of the bowl pressing mold according to the present invention.

Reference numerals shown in the drawings:

1. a frame; 2. marking a part; 3. a pressing member; 4. marking an end; 5. a bidirectional adjustment mechanism; 6. marking a shell; 7. a three-axis linkage displacement adjusting mechanism; 8. a support member; 9. a drive member; 10. pressing a bowl mold; 11. A connecting member; 12. a progressive adjustment member; 13. a position sensor; 14. a support roller; 15. a rotating shaft; 16. A margin component; 17. a limiting groove lantern ring; 18. an arc block; 19. a progressive cylinder; 20. guiding the optical axis; 21. a connecting end; 22. pressing a bowl end; 23. a through hole; 24. a small hole; 25. a first sliding guide rail; 26. an adjusting handle; 27. a second sliding guide rail; 28. the motor is driven.

Detailed Description

The utility model will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and these equivalents also fall within the scope of the present application.

The utility model relates to a bowl pressing marking machine for vehicle body elbow, which comprises a main body structure and a control system, wherein the main body structure comprises a rack 1, a marking piece 2, a pressing piece 3 and the centralized control system, the marking piece 2, the pressing piece 3 and the centralized control system are all arranged on the rack 1, and the marking piece 2 and the pressing piece 3 are connected with the centralized control system; firstly, for a vehicle body pipe fitting, after an effective position of a bent pipe needs to be fixed when the bowl pressing marking operation is carried out on the vehicle body pipe fitting, the bent pipe needs to be marked. When the device is used for limiting the bent pipe, the bowl pressing die 10 arranged in the device can be used for pressing and holding the bent pipe to be limited, and simultaneously, bowl pressing operation is carried out on two ends, needing bowl pressing operation, of the bent pipe, so that the subsequent operation step of pressing the bowl again on the bent pipe is omitted, and meanwhile, the normal operation of marking the bent pipe can be guaranteed. The mark 2 of beating that this device set up sets up with pressing 3 cooperation centralized control systems of holding for centralized control systems can carry out accurate control of marcing to beating mark 2, pressing 3 of holding, with the guarantee pressing the bowl to the return bend and beat the accurate degree when standard.

The marking member 2 in the device comprises the following settings:

as shown in fig. 1 of the accompanying drawings, in order to perform a bending pipe workpiece requiring a bowl pressing marking operation, and in the bending pipe workpiece, a bending pipe portion requiring the marking operation and a bending pipe portion requiring the bowl pressing operation are not in the same straight line, but are arranged by intersecting two pipe bodies, so that the bending pipe workpiece needs to be arranged in cooperation with the bending pipe workpiece when the marking member 2 of the present apparatus is arranged.

The marking part 2 is arranged on one side of the pressing part 3 in a matching way, and the marking part 2 comprises

The marking device comprises a marking end 4 adjusting system, wherein the marking end 4 adjusting system comprises a marking end 4, a two-way adjusting mechanism 5 and a marking shell 6, the two-way adjusting mechanism 5 is matched with the marking end 4 connected with a power source and is arranged on the marking shell 6, and the two-way adjusting mechanism 5 drives the marking end 4 to move transversely and longitudinally; when marking the setting of mark piece 2, at first will ensure to beat that mark piece 2 can be accurate carry out the position and remove, under centralized control system's control promptly, make two-way adjustment mechanism 5 can correctly drive and beat mark end 4 and carry out the position and remove, and then make and beat mark end 4 and correctly beat the typeface information that marks and accord with the regulation. In the device, the bidirectional adjusting mechanism 5 comprises second sliding guide rails 27 and a driving piece, the two second sliding guide rails 27 are arranged in a crossed manner, and the marking head 4 is arranged on one of the second sliding guide rails 27 in a sliding manner; the driving parts are driving motors 28, and the two driving motors 28 drive the marking end 4 to move through a belt transmission mechanism. As shown in fig. 8 of the accompanying drawings, the two second sliding guides 27 are arranged in a crossing manner, so that the second sliding guide 27 arranged at the upper end can slide on the second sliding guide 27 at the lower end, and the marking head 4 can slide on the second sliding guide 27 at the upper end, thereby realizing the bidirectional position sliding of the marking head 4; in addition, the bidirectional adjusting mechanism 5 in the device adopts the driving motor 28 as a driving piece, and realizes the sliding driving through the belt transmission mechanism so as to ensure that the marking end 4 can stably mark. In this device, the marking mode of marking the end 4 is for driving through the mode of atmospheric pressure, and the most advanced of marking the end 4 realizes round trip movement through the pneumatic piston structure, and then realizes that the most advanced of marking the end 4 beats the mark operation.

The marking device comprises a marking shell 6 adjusting system, wherein the marking shell 6 adjusting system is a three-axis linkage displacement adjusting mechanism 7 and is connected with the marking end 4 adjusting system to drive the marking end 4 adjusting system to realize three-dimensional adjustment; as shown in fig. 2 of the accompanying drawings of the specification, the three-axis linkage displacement adjusting mechanism 7 includes first sliding guide rails 25 and an adjusting handle 26, and the three first sliding guide rails 25 are arranged in a mutually intersecting manner and connected with the adjusting handle 26 through a screw adjusting mechanism to adjust the position of the marking housing 6. Through screw drive mechanism, realize beating 4 governing systems's of mark end three-dimensional regulation, and then ensure to beat 4 governing systems of mark end and can accurately use the mark position department of beating of return bend work piece.

The holding-down member 3 of the present apparatus includes the following arrangements:

the pressing and holding piece 3 comprises a supporting piece 8 and a driving piece 9, the end parts of the supporting piece 8 and the driving piece 9 are all provided with a pressing bowl die 10, and the pressing bowl die 10 presses and holds the workpiece through the driving piece 9 after supporting the workpiece. Because this device is pressing when holding fixedly to the return bend work piece, also need to press the bowl operation to the both ends position of return bend work piece, consequently all set up at 8 tip of support piece, the 9 output shaft tip of driving piece and press bowl mould 10, and then when pressing the both ends of return bend work piece and holding, can directly press the bowl operation to the both ends of return bend work piece, and then accelerate the machining efficiency of return bend work piece. For the pressing and holding piece 3 of the device, an air pressure driving mode is selected for driving so as to ensure that the bearing seat can be easily pressed into the port of the elbow pipe fitting when the bowl pressing operation is carried out on the pipe fitting.

The marking element 2 in the device is further improved, and comprises the following settings:

the adjusting system of the marking shell 6 is connected with the adjusting system of the marking end 4 through a connecting piece 11, and a progressive adjusting piece 12 is arranged at the connecting part of the connecting piece 11 and the adjusting system of the marking end 4; the progressive adjusting piece 12 is an extensible piece, and the extensible end of the progressive adjusting piece 12 is perpendicular to the workpiece machining surface and can drive the marking end 4 adjusting system to move forwards and backwards in a progressive mode. Because to the return bend work piece that this device need beat the mark operation, its mark mode of beating is comparatively special, consequently when beating mark end 4 and beat the mark operation to the return bend work piece, need to ensure to beat the mark displacement of advancing of mark end 4 and the mark face of beating of return bend work piece and be the parallel state, and then ensure to beat the mark degree of depth unanimity of beating the mark of mark end 4 in the different positions department on the return bend work piece. A position sensor 13 is arranged on the outer side of the marking shell 6 in a matching manner, and the position sensor 13 is connected with the centralized control system; the position sensor 13 arranged here is matched with the progressive adjusting piece 12 to be arranged, and when the progressive adjusting piece 12 is controlled by the centralized control system to stretch, the marking end head 4 is close to the bent pipe workpiece. When the position sensor 13 detects that the marking end 4 is close to the elbow workpiece to a certain distance, the progressive adjusting part 12 does not perform telescopic motion at the moment, so that the elbow workpiece and the marking end 4 are kept at a certain distance, and the subsequent marking operation of the marking end 4 on the elbow workpiece is facilitated. The adjusting part 12 is a progressive cylinder 19, the progressive cylinder 19 is provided with a guide optical axis 20 in a matching manner, and the progressive cylinder 19 stretches and retracts to drive the marking shell 6 to move along the guide optical axis 20.

The connecting piece 11 comprises a rotating shaft 15 and a margin component 16, the three-axis linkage displacement adjusting mechanism 7 is connected with the marking shell 6 through the rotating shaft 15, and the margin component 16 is arranged on the outer side of the rotating shaft 15 in a matching mode; as shown in fig. 4 of the attached drawings of the specification, the allowance component 16 comprises a limiting groove lantern ring 17 and an arc block 18, and the limiting groove lantern ring is sleeved outside the rotating shaft 15 and connected with the three-shaft linkage displacement adjusting mechanism 7; the arc block 18 is arranged in the groove of the limiting groove lantern ring 17 in a matching mode and is connected with the marking shell 6; and a clearance allowance is formed by the matching between the limiting groove lantern ring 17 and the arc block 18. The marking device is characterized in that a supporting component is arranged on the outer side of the marking shell 6, the supporting component is a supporting roller 14, and the supporting roller 14 is arranged on the outer side of the supporting component in a matching mode. When the progressive adjusting piece 12 drives the marking shell 6 to move towards the bent pipe workpiece, the supporting roller 14 is firstly contacted with the bent pipe workpiece; because the bent pipe workpiece can not be ensured to be in a precise vertical installation state when being installed, and the bent pipe part can not be welded at an accurate welding angle for the bent pipe workpiece, the position deviation can occur after the supporting rollers 14 are connected with the bent pipe workpiece, at the moment, the marking shell 6 can rotate along the rotating shaft 15, so that the two supporting rollers 14 can generate acting force on the bent pipe workpiece, and because of the matching arrangement of the limiting groove lantern ring and the arc block 18, a certain amount of rotating residual materials can be allowed to exist in the marking shell 6, so as to ensure that the two supporting rollers 14 can play a supporting role on the bent pipe workpiece after the bent pipe shell 6 rotates, and simultaneously ensure that the advancing displacement of the marking end head 4 is parallel to the marking surface of the bent pipe workpiece, so that the marking operation of the end head 4 is more precise, the phenomenon that the scale on one end of the marking font is deep and the scale on the other end of the marking font is shallow is avoided.

The pressing and holding piece 3 in the device is further improved, and comprises the following settings:

it will be understood that, when the pipe fitting is pressed, the bearing seat is required to be pressed into the port of the pipe fitting with a certain pressure, and due to the action of the pressure, the bearing seat can generate acting force with the pipe wall at the end part of the pipe fitting due to the action of the pressing force after being pressed into the end part of the pipe fitting. But the installation of bearing frame is for the installation of the follow-up bearing of convenience, if only impress the bearing frame behind the tip of pipe fitting, because the effort that the pipe wall produced for the bearing frame, can make the bearing frame clearance diminish, and then increase the degree of difficulty for the normal installation of bearing. And when pressing the bowl operation to the bearing frame, because comparatively crude between bearing frame and the pipe wall for when pressing the bowl operation, need overcome great frictional force between bearing frame and the pipe fitting tip pipe wall, the phenomenon that the bearing frame after pressing the bowl is in the unevenness at the pipe fitting tip appears very easily moreover, increases the degree of difficulty for the normal installation of follow-up bearing more.

The bowl pressing die 10 comprises a connecting end 21 and a bowl pressing end 22, the bowl pressing die 10 is arranged in a hollow mode, and the connecting end 21 is provided with a detachable structure which is detachably connected with the end portion of the supporting piece 8 and the end portion of the output shaft of the driving piece 9; the bowl pressing die 10 is provided with a through hole 23 communicated with the inside, and the inner space of the bowl pressing die 10 is communicated with a small hole 24 arranged at the bowl pressing end 22. As shown in fig. 9 of the accompanying drawings of the specification, after the bowl pressing mold 10 is installed and set at two pressing ends of the bowl pressing mold 3, a bearing seat with a specified size is required to be placed on the end face of the bowl pressing end 22 of the bowl pressing mold 10 for the first time, after the bearing seat is placed, the bowl pressing mold 3 can press and hold pipe orifices at two ends of a pipe fitting, and when the bowl pressing mold 10 is pressed and held, lubricating oil is introduced into the bowl pressing mold 10 from a through hole 23 of the bowl pressing mold 10, so that the lubricating oil flows out from a small hole 24 formed in the bowl pressing end 22. When pressing and holding piece 3 and pressing and holding the both ends of pipe fitting, because there is the effect of lubricating oil for frictional force between the pipe wall of bearing frame and pipe fitting port reduces, and then under the effect of pressing and holding piece 3, can make the inside of being impressed the pipe fitting port that the bearing frame is lighter. And because when the pressure is held, lubricating oil can be adhered to the bearing seat, and then after the pressure is held, the step of installing the bearing to the bearing seat can be easier, and then the pipe fitting production quality requirement that the guarantee pressure bowl production obtained accords with the standard more.

Therefore, the bowl pressing marking machine for the vehicle body bent pipe can realize the marking operation on the bent pipe on the basis of limiting the effective position of the bent pipe, and can realize the bowl pressing operation of the bearing seat on the openings at the two ends of the bent pipe when the position of the bent pipe is limited, so that the processing speed of the bent pipe is increased, and the production speed of a factory is guaranteed.

Claims

1. The bowl pressing and marking machine for the vehicle body elbow is characterized in that: the marking machine comprises a rack (1), a marking piece (2), a pressing piece (3) and a centralized control system, wherein the marking piece (2), the pressing piece (3) and the centralized control system are all arranged on the rack (1), and the marking piece (2) and the pressing piece (3) are connected with the centralized control system;

the marking part (2) is arranged on one side of the pressing part (3) in a matching way, and the marking part (2) comprises

The marking device comprises a marking end (4) adjusting system, wherein the marking end (4) adjusting system comprises a marking end (4), a two-way adjusting mechanism (5) and a marking shell (6), the two-way adjusting mechanism (5) is matched with the marking end (4) connected with a power source and is arranged on the marking shell (6), and the two-way adjusting mechanism (5) drives the marking end (4) to move transversely and longitudinally;

and

the marking device comprises a marking shell (6) adjusting system, wherein the marking shell (6) adjusting system is a three-axis linkage displacement adjusting mechanism (7) and is connected with a marking end head (4) adjusting system to drive the marking end head (4) adjusting system to realize three-dimensional adjustment;

the pressing and holding piece (3) comprises a supporting piece (8) and a driving piece (9), the end part of the supporting piece (8) and the end part of an output shaft of the driving piece (9) are both provided with a pressing bowl die (10), and the pressing bowl die (10) presses and holds the workpiece through the driving piece (9) after supporting the workpiece.

2. The bowl pressing and marking machine for the vehicle body elbow, according to claim 1, is characterized in that: the adjusting system of the marking shell (6) is connected with the adjusting system of the marking end (4) through a connecting piece (11), and a progressive adjusting piece (12) is arranged at the connecting part of the connecting piece (11) and the adjusting system of the marking end (4);

the progressive adjusting piece (12) is an extensible piece, and the extensible end of the progressive adjusting piece (12) is perpendicular to the workpiece machining face and can drive the marking end (4) adjusting system to move forwards and backwards.

3. The bowl pressing and marking machine for the vehicle body elbow as claimed in claim 2, wherein: a position sensor (13) is arranged on the outer side of the marking shell (6) in a matching manner, and the position sensor (13) is connected with the centralized control system;

the marking device is characterized in that a supporting component is arranged on the outer side of the marking shell (6), the supporting component is a supporting roller (14), and the supporting roller (14) is arranged on the outer side of the supporting component in a matching mode.

4. The bowl pressing and marking machine for the vehicle body elbow, according to claim 3, is characterized in that: the connecting piece (11) comprises a rotating shaft (15) and a margin component (16), the three-axis linkage displacement adjusting mechanism (7) is connected with the marking shell (6) through the rotating shaft (15), and the margin component (16) is arranged on the outer side of the rotating shaft (15) in a matching mode;

the allowance component (16) comprises a limiting groove lantern ring (17) and an arc block (18), wherein the limiting groove lantern ring (17) is sleeved on the outer side of the rotating shaft (15) and is connected with the three-shaft linkage displacement adjusting mechanism (7); the arc block (18) is arranged in a groove of the limiting groove lantern ring (17) in a matched mode and is connected with the marking shell (6); and clearance allowance is formed by the matching of the limiting groove lantern ring (17) and the arc block (18).

5. The bowl pressing and marking machine for the vehicle body elbow, according to claim 4, is characterized in that: the progressive adjusting part (12) is a progressive cylinder (19), the progressive cylinder (19) is matched with a guide optical axis (20), and the progressive cylinder (19) stretches and retracts to drive the marking shell (6) to move along the guide optical axis (20).

6. The bowl pressing and marking machine for the vehicle body elbow pipe as claimed in claim 1 or 5, wherein: the bowl pressing die (10) comprises a connecting end (21) and a bowl pressing end (22), the bowl pressing die (10) is arranged in a hollow mode, and the connecting end (21) is provided with a detachable structure which is detachably connected with the end part of the supporting piece (8) and the end part of the output shaft of the driving piece (9);

the bowl pressing die (10) is provided with a through hole (23) communicated with the inside, and the inner space of the bowl pressing die (10) is communicated with a small hole (24) formed in the bowl pressing end (22).

7. The bowl pressing and marking machine for the vehicle body elbow, according to claim 1, is characterized in that: three-axis linkage displacement adjustment mechanism (7) include first sliding guide (25) and adjustment handle (26), and are three first sliding guide (25) intercrossing sets up, and is connected with adjustment handle (26) through screw rod adjustment mechanism, adjusts the position of marking casing (6).

8. The bowl pressing and marking machine for the vehicle body elbow, according to claim 1, is characterized in that: the bidirectional adjusting mechanism (5) comprises second sliding guide rails (27) and a driving piece, the two second sliding guide rails (27) are arranged in a crossed mode, and the marking head (4) is arranged on one of the second sliding guide rails (27) in a sliding mode; the driving piece is a driving motor (28), and the two driving motors (28) drive the marking end (4) to move through a belt transmission mechanism.