CN216912503U

CN216912503U - Laser welding assembly fixture for positioning high-pressure fuel distribution pipe assembly

Info

Publication number: CN216912503U
Application number: CN202220355267.2U
Authority: CN
Inventors: 杨旭; 倪爽; 程水良
Original assignee: Saiwo Zhizao Shanghai Technology Co Ltd
Current assignee: Saiwo Zhizao Shanghai Technology Co Ltd
Priority date: 2022-02-22
Filing date: 2022-02-22
Publication date: 2022-07-08
Anticipated expiration: 2032-02-22

Abstract

The utility model discloses a laser welding assembly fixture for positioning a high-pressure fuel distribution pipe assembly, which comprises a base, a front cylinder assembly and a rear cylinder assembly which are positioned at the upper end of the base, a distribution pipe supporting block positioned between the front cylinder assembly and the rear cylinder assembly, a support seat supporting block, an end limiting block and an end limiting assembly, wherein the front cylinder assembly and the rear cylinder assembly are positioned at the upper end of the base; the end limiting assembly comprises a first fixing block, a side pressing cylinder connected to the first fixing block and an end positioning pin connected to the front end of a piston rod of the side pressing cylinder; the end limiting block, the distribution pipe supporting block and the end positioning pin are positioned on the same straight line; the front air cylinder assembly comprises a plurality of air cylinders I and a first connecting piece connected with piston rods of the air cylinders I, the piston rods of the air cylinders I extend towards the distribution pipe supporting block, and a plurality of side pressure rods are arranged on the first connecting piece connected to the first guide block; the rear air cylinder assembly comprises a plurality of air cylinders II, and a movable positioning rod I and a movable positioning rod II are connected to the air cylinders II. The utility model has simple operation and is suitable for distribution pipes with different lengths.

Description

Laser welding assembly fixture for positioning high-pressure fuel distribution pipe assembly

Technical Field

The utility model relates to the technical field of welding equipment, in particular to a laser welding assembly fixture for positioning a high-pressure fuel distribution pipe assembly.

Background

In the existing automobile parts, distribution pipes with different lengths need to be welded to form a distribution pipe assembly part, as shown in fig. 1. The first distribution pipe a1 and the second distribution pipe a2 are connected through a bracket base A3, and are welded by using a welding method, the welding sequence generally includes that four bracket bases A3 and four distribution pipes two a2 are respectively welded (step one) to form an assembly shown in fig. 3, and then the four assemblies after welding are welded with the first distribution pipe a1 (step two), so as to finally obtain the assembly shown in fig. 1.

In the second step, the first distribution pipe a1, the second distribution pipe a2 and the bracket base A3 need to be fixed by using a welding fixture, and then fixed-point welding is performed by using a welding device. In this step, since the positioning blocks for fixing the left and right ends of the distribution pipe a1 in the conventional welding jig are fixed and immovable, the conventional welding jig can only be applied to the distribution pipe a1 with a fixed length, and the operation is not flexible.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model aims to provide a laser welding assembly fixture for positioning a high-pressure fuel distribution pipe assembly, which solves the technical problem that the welding fixture in the prior art cannot position two end parts of distribution pipes with different lengths. The utility model has simple structure and lower cost.

(II) technical scheme

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

a laser welding assembly fixture for positioning a high-pressure fuel distribution pipe assembly comprises a base, a front cylinder assembly and a rear cylinder assembly, wherein the front cylinder assembly and the rear cylinder assembly are positioned at the upper end of the base; a distribution pipe supporting block and a bracket seat supporting block are also arranged between the front air cylinder assembly and the rear air cylinder assembly, and an end limiting block and an end limiting assembly are respectively arranged on two sides of the distribution pipe supporting block;

the end limiting assembly comprises a first fixing block fixed above the base, a side pressure cylinder connected to the first fixing block, and an end positioning pin connected to the front end of a piston rod of the side pressure cylinder and extending towards the direction of the end limiting block; the end limiting block, the distribution pipe supporting block and the end positioning pin are positioned on the same straight line;

the front air cylinder assembly comprises a plurality of air cylinders I and a connecting piece I connected with a piston rod of the air cylinders I, and a plurality of side pressure rods are arranged on the connecting piece I; a first guide block for guiding the first connecting piece to move is further arranged below the first connecting piece;

the rear air cylinder assembly comprises a plurality of air cylinders II, wherein movable positioning rods I and positioning rods II are connected to the air cylinders II, the positioning rods I extend towards the side pressing rod direction, and the positioning rods II extend towards the support block direction of the support seat.

Furthermore, a positioning groove is formed in the distribution pipe supporting block.

Further, the positioning groove is V-shaped.

Furthermore, the front end of the second positioning rod is also provided with an inwards concave clamping groove.

The jacking device comprises a jacking cylinder I, a jacking block II and a jacking assembly, wherein the jacking assembly comprises a fixed block I, a jacking block II and a jacking cylinder II; the jacking block is movably connected with the second fixed block, one end of the jacking block is hinged with a piston rod of the second jacking cylinder, and the second jacking cylinder drives one end of the jacking block to move up and down.

Furthermore, a guide block II is arranged in the moving direction of the positioning rod I; and the second guide block is provided with a guide hole with two through ends.

Furthermore, a jacking block is further arranged between the first positioning rod and the side pressing rod, a first jacking cylinder is arranged below the jacking block, and the jacking block moves up and down under the driving of the first jacking cylinder.

Furthermore, the lower end of the support base supporting block is connected with a piston rod of a first jacking cylinder and moves up and down under the driving of the first jacking cylinder; and an elastic part is arranged between the support block of the support seat and the base.

Further, one side of the first air cylinder is further provided with a third fixed block, the third fixed block is connected with a third air cylinder, and a piston rod of the third air cylinder extends towards the oblique lower side.

Furthermore, the number of the cylinders is two, each cylinder is connected with a connecting piece I, and the connecting piece I is provided with two side pressure rods.

(III) advantageous effects

Compared with the prior art, the utility model provides a laser welding assembly fixture for positioning a high-pressure fuel distribution pipe assembly, which has the following beneficial effects: the end limiting block, the distribution pipe supporting block and the end positioning pin are positioned on the same straight line. The end limiting block and the end positioning pin are used for positioning two ends of the distributing pipe from two ends respectively, and the end positioning pin is connected to the front end of the piston rod of the side pressure cylinder and extends towards the end limiting block, so that under the pushing of the piston rod of the side pressure cylinder, the end positioning pin can move back and forth towards the end limiting block and is pushed. When the distribution pipe is placed between the end limiting block and the end positioning pin after being placed at the upper end of the distribution pipe supporting block, the end positioning pin pushes and presses towards the end limiting block, and the distribution pipe is tightly fixed between the end limiting block and the end positioning pin; after the welding is finished, the end positioning pin moves in the opposite direction, and the distribution pipe arranged between the end limiting block and the end positioning pin can be easily taken down.

Meanwhile, the end part positioning pin can move back and forth along the direction of the end part limiting block and is movable, so that the linear distance between the end part limiting block and the front end of the end part positioning pin can be changed, and the end part positioning pin can be suitable for positioning two end parts of distribution pipes with different lengths, namely the lengths of the distribution pipes placed between the end part limiting block and the end part positioning pin can be different each time, and the distribution pipes are more flexible; and because the end positioning pin exerts a pushing force on the side end of the distribution pipe under the action of the side pressure cylinder, the two ends of the distribution pipe can be better positioned together with the end limiting block in the welding process, and the positioning effect is better.

Drawings

Figure 1 is a schematic view of a welded dispensing tube assembly of the prior art design.

Fig. 2 is a schematic structural view of the first distribution pipe in fig. 1.

Fig. 3 is a schematic structural view of an assembly of the second distribution pipe and the holder of fig. 1.

FIG. 4 is a first schematic structural view of the laser welding assembly jig of the present invention.

FIG. 5 is a second schematic structural view of the laser welding assembly jig of the present invention.

In the figure:

a1-distribution pipe I, A2-distribution pipe II, A3-bracket seat, A31-welding point and A32-welding point;

100-base, 110-cylinder I, 111-connecting piece I, 112-side pressure rod, 113-guide block I, 120-cylinder II, 121-positioning rod II, 122-positioning rod I, 130-distribution pipe supporting block, 131-end limiting block, 132-fixing block I, 133-side pressure cylinder, 134-end positioning pin, 140-bracket base supporting block, 141-top block, 142-jacking cylinder I, 143-guide block II, 150-jacking block, 151-fixing block II, 152-jacking cylinder II, 160-fixing block III and 161-cylinder III.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 4 to 5, the present invention provides a laser welding assembly jig for positioning a high pressure fuel distribution pipe assembly, which includes a base 100, a front cylinder assembly and a rear cylinder assembly located at an upper end of the base 100;

a distribution pipe supporting block 130 for supporting a first distribution pipe A1 and a support seat supporting block 140 for supporting a support seat A3 are further arranged between the front cylinder assembly and the rear cylinder assembly, and end limiting blocks 131 and end limiting assemblies are respectively arranged on two sides of the distribution pipe supporting block 130;

the end limiting assembly comprises a first fixed block 132 fixed above the base 100, a lateral pressure cylinder 133 connected to the first fixed block 132, and an end positioning pin 134 connected to the front end of the piston rod of the lateral pressure cylinder 133 and extending towards the direction of the end limiting block 131; the end limiting block 131, the distribution pipe supporting block 130 and the end positioning pin 134 are in the same straight line;

the front cylinder assembly comprises a plurality of cylinders I110 and a connecting piece I111 connected with a piston rod of the cylinders I110, and a plurality of side pressure rods 112 used for pressing the side surface of the support seat A3 are arranged on the connecting piece I111; a first guide block 113 for guiding the first connecting piece 111 to move is further arranged below the first connecting piece 111;

the rear air cylinder assembly comprises a plurality of air cylinders II 120, movable positioning rods I122 and movable positioning rods II 121 are connected to the air cylinders II 120, the positioning rods I122 extend towards the side pressure rods 112, and the positioning rods II 121 extend towards the support seat supporting blocks 140. In this embodiment, a concave slot (not shown in the drawings) is further disposed at the front end of the second positioning rod 121, the concave slot is a circular groove, and when the second positioning rod 121 pushes the support block 140 toward the support seat, the concave slot can lock the end of the second distribution pipe a2 therein, so as to better lock the position of the second distribution pipe a 2.

When the distribution pipe supporting device is used, the bracket seat A3 is arranged above the bracket seat supporting block 140, the distribution pipe II A2 faces the positioning rod II 121, and the distribution pipe I A1 is arranged at the upper end of the distribution pipe supporting block 130 and is positioned above the bracket seat A3; under the drive of the second air cylinder 120, the second positioning rod 121 presses the end part of the second distribution pipe A2 from back to front, the first positioning rod 122 presses the bracket seat A3 from back to front, and the side pressure rod 112 presses the bracket seat A3 from front to back under the drive of the side pressure air cylinder 133, so that the aim of locking the bracket seat A3 in the horizontal direction is fulfilled. Meanwhile, the first distribution pipe a1 is horizontally placed on the upper end of the distribution pipe support block 130, the left end of the first distribution pipe a1 abuts against the right side of the end limiting block 131, and the end positioning pin 134 is pushed towards the right end of the first distribution pipe a1 by the driving of the side pressure cylinder 133, so that the first distribution pipe a1 is fastened between the end limiting block 131 and the end positioning pin 134.

Meanwhile, the end positioning pin 134 can move back and forth along the direction of the end limiting block 131 and is movable, so that the linear distance between the end limiting block 131 and the front end of the end positioning pin 134 can be changed, and the end positioning pin can be suitable for positioning two end parts of distribution pipes with different lengths, namely the lengths of the distribution pipes A1 placed between the end limiting block 131 and the end positioning pin 134 at each time can be different, and the distribution pipes are more flexible; moreover, because the end positioning pin 134 applies a pushing force to the right end of the first distribution pipe a1 under the action of the side pressure cylinder 133, the two ends of the first distribution pipe a1 can be better positioned together with the end limiting block 131 during the welding process, and the positioning effect is also better.

As shown in fig. 4, the dispensing pipe supporting block 130 is provided with a positioning groove into which the dispensing pipe a1 is inserted. The positioning groove is V-shaped, and when the first distribution pipe A1 is placed at the upper end of the distribution pipe supporting block 130 and clamped into the positioning groove, the first distribution pipe A1 can be better prevented from displacing, and the fixing effect is better.

In order to better position the first dispensing tube a1, the pressing assembly is further included in the present embodiment, and the pressing assembly can press the first dispensing tube a1 from top to bottom to lock the first dispensing tube a 1. In this embodiment, the jacking assembly includes a second fixed block 151, a jacking block 150 and a second jacking cylinder 152; the top pressing block 150 is hinged with the second fixing block 151 and movably connected with the second fixing block; one end of the jacking block 150 is hinged with a piston rod of the jacking cylinder II 152, and the jacking cylinder II 152 drives one end of the jacking block 150 to move up and down. Through the structure, in the process that the second jacking cylinder 152 drives one end of the first jacking block 150 to move upwards, the other end of the first jacking block 150 presses downwards to the upper end of the first distribution pipe A1, and a downward acting force is applied to the first distribution pipe A1.

Meanwhile, a jacking block 141 is further arranged between the first positioning rod 122 and the side pressure rod 112, and a jacking cylinder 142 is arranged below the jacking block 141. In this embodiment, the piston rod of the first jacking cylinder 142 is connected to the jacking block 141, and the jacking block 141 moves up and down through the base 100 under the driving of the first jacking cylinder 142, and pushes the lower end of the support seat a3 when pushing up.

The leg rest support block 140 functions to support the leg rest a3, and is located at the upper end of the base 100. The support-holder supporting block 140 may be fixed to the base 100, or may be movably designed as designed in this embodiment, that is, the lower end of the support-holder supporting block 140 is connected to the piston rod of the first jacking cylinder 142 or connected to the piston rod of the first jacking cylinder 142 through a connecting member, and may move up and down under the action of the first jacking cylinder 142, so as to adjust the height of the support-holder supporting block 140. Meanwhile, in this embodiment, an elastic member, such as a spring, is further disposed between the lower end of the support block 140 and the base 100 to play a certain buffering role.

Under the cooperation of the top block 141 and the top press block 150, the first distribution pipe A1 and the bracket seat A3 can be better fastened and positioned in the longitudinal direction, and the fastening and positioning accuracy and effect are improved.

In order to position the distribution pipe A1 from multiple angles, in the embodiment, a component which can be pressed from an upper direction to a lower direction is additionally arranged, and the component comprises a fixed block III 160 and an air cylinder III 161; the cylinder three 161 is connected to the fixed block three 160 and located at one side of the cylinder one, and a piston rod of the cylinder three 161 extends obliquely downward towards the distribution pipe one a 1. During welding, the piston rod of the cylinder three 161 is pressed against the distribution pipe a1 from the upper part to the lower part.

In this embodiment, the front cylinder assembly includes two cylinders one 110, each cylinder one 110 is connected with a connecting piece one 111, and each connecting piece one 111 is connected with two side compression rods 112; the rear cylinder component comprises four second cylinders 120; and includes four top blocks 141, each top block 141 being connected to a top cylinder one 142. With the structure, the four bracket seats A3 can be clamped and positioned.

In this embodiment, the lower end of the first connecting piece 111 is slidably connected with the first guide block 113; under the pushing of the cylinder I110, the connecting rod I111 moves back and forth along the guide block I113 towards the positioning rod I122.

In this embodiment, the second guiding block 143 is a block-shaped body and is located in the moving direction of the first positioning rod 122, and the second guiding block 143 is provided with a hole having two ends penetrating therethrough, which is a guiding hole for the first positioning rod 122 to penetrate therethrough.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A laser welding assembly jig for fixing a position high pressure fuel distribution pipe subassembly which characterized in that: comprises a base (100), a front cylinder component and a rear cylinder component which are positioned at the upper end of the base (100); a distribution pipe supporting block (130) and a support seat supporting block (140) are also arranged between the front cylinder assembly and the rear cylinder assembly, and an end limiting block (131) and an end limiting assembly are respectively arranged at two sides of the distribution pipe supporting block (130);

the end limiting assembly comprises a first fixed block (132) fixed above the base (100), a lateral pressure cylinder (133) connected to the first fixed block (132), and an end positioning pin (134) connected to the front end of a piston rod of the lateral pressure cylinder (133) and extending towards the direction of the end limiting block (131); the end limiting block (131), the distribution pipe supporting block (130) and the end positioning pin (134) are positioned on the same straight line;

the front air cylinder assembly comprises a plurality of first air cylinders (110) and a first connecting piece (111) connected with piston rods of the first air cylinders (110), and a plurality of side pressure rods (112) are arranged on the first connecting piece (111); a first guide block (113) for guiding the first connecting piece (111) to move is further arranged below the first connecting piece (111);

the rear air cylinder assembly comprises a plurality of air cylinders II (120), movable positioning rods I (122) and positioning rods II (121) are connected to the air cylinders II (120), the positioning rods I (122) extend towards the side pressure rod (112), and the positioning rods II (121) extend towards the support seat supporting block (140).

2. A laser welding assembly fixture for positioning a high pressure fuel distribution pipe assembly as set forth in claim 1, wherein: and a positioning groove is arranged on the distribution pipe supporting block (130).

3. A laser welding assembly fixture for positioning a high pressure fuel distribution pipe assembly as set forth in claim 2, wherein: the positioning groove is V-shaped.

4. A laser welding assembly fixture for positioning a high pressure fuel distribution pipe assembly as set forth in claim 2, wherein: the front end of the second positioning rod (121) is also provided with an inwards concave clamping groove.

5. The laser welding assembly jig for positioning a high pressure fuel distribution pipe assembly as set forth in any one of claims 1 to 4, wherein: the jacking device comprises a jacking assembly, wherein the jacking assembly comprises a second fixed block (151), a jacking block (150) and a jacking cylinder II (152); the top pressing block (150) is movably connected with the second fixing block (151), one end of the top pressing block (150) is hinged to a piston rod of the second jacking cylinder (152), and the second jacking cylinder (152) drives one end of the top pressing block (150) to move up and down.

6. The laser welding assembly fixture for positioning a high pressure fuel distribution pipe assembly of claim 5, wherein: a second guide block (143) is further arranged in the moving direction of the first positioning rod (122); and a guide hole with two through ends is formed in the second guide block (143).

7. A laser welding assembly fixture for positioning a high pressure fuel distribution pipe assembly as set forth in claim 6, wherein: an ejecting block (141) is further arranged between the first positioning rod (122) and the side pressing rod (112), a first jacking cylinder (142) is arranged below the ejecting block (141), and the ejecting block (141) moves up and down under the driving of the first jacking cylinder (142).

8. A laser welding assembly fixture for positioning a high pressure fuel distribution pipe assembly as set forth in claim 7, wherein: the lower end of the support seat supporting block (140) is connected with a piston rod of a first jacking cylinder (142), and the support seat supporting block moves up and down under the driving of the first jacking cylinder (142); and an elastic part is arranged between the support block (140) of the support seat and the base (100).

9. A laser welding assembly fixture for positioning a high pressure fuel distribution pipe assembly as set forth in claim 8, wherein: one side of the first air cylinder (110) is further provided with a third fixed block (160), the third fixed block (160) is connected with a third air cylinder (161), and a piston rod of the third air cylinder (161) extends towards the oblique lower side.

10. A laser welding assembly fixture for positioning a high pressure fuel distribution pipe assembly as set forth in claim 9, wherein: the number of the second air cylinders (120) is four, the number of the first air cylinders (110) is two, each first air cylinder (110) is connected with one first connecting piece (111), and two side pressure rods (112) are arranged on each first connecting piece (111).