CN113878203B

CN113878203B - Lightweight frame production testing method and system

Info

Publication number: CN113878203B
Application number: CN202111094147.8A
Authority: CN
Inventors: 王勇
Original assignee: Wuxi Zhenqiang Locomotive Parts Manufacturing Co ltd
Current assignee: Wuxi Zhenqiang Locomotive Parts Manufacturing Co ltd
Priority date: 2021-09-17
Filing date: 2021-09-17
Publication date: 2022-07-22
Anticipated expiration: 2041-09-17
Also published as: CN113878203A

Abstract

The invention discloses a lightweight frame production test method and a lightweight frame production test system, which comprise the following steps: firstly, according to the lightweight frame framework and the size requirement, cutting pipe parts with different sizes for frame components, and then welding each component by adopting carbon dioxide arc welding: specifically, carbon dioxide gas is conveyed for 1-2s in advance through a gas supply system, welding is carried out through a welding robot based on an intelligent vision system, and gas supply is stopped after welding is stopped; the liquid carbon dioxide filled in the steel cylinder needs to be dried and dehydrated to reduce the water content in the carbon dioxide gas, and finally, the weld joint strength is tested through an impact resistance experiment system. According to the invention, through reasonable arrangement of the tool, the components of the frame are tightly spliced so as to ensure the quality of welding seams; the carbon dioxide arc welding is adopted, so that the stability of a welding seam is further ensured, and the quality of the frame is improved; adopt rational in infrastructure's impact experiment system, the effectual impact strength who verifies the frame.

Description

Lightweight frame production test method and production test system thereof

Technical Field

The invention relates to the field of bicycle frame production, in particular to a lightweight frame production testing method and a lightweight frame production testing system.

Background

In the common bicycle frame welding, manual electric arc welding is generally considered in consideration of cost, but due to the fact that much spatter exists, current easily breaks through a tube wall, welding quality cannot be guaranteed, and in order to improve production efficiency and reduce product cost, a high-automation frame production system which is high in efficiency, energy-saving and low in cost is designed, and the frame production system has important significance in light frame production.

Disclosure of Invention

The invention aims to: in order to overcome the defects in the prior art, the invention provides a lightweight frame production testing method and a lightweight frame production testing system, which are reasonable in structure, energy-saving and efficient.

The technical scheme is as follows: in order to achieve the purpose, the invention provides a lightweight frame production test method and a production test system thereof, which comprises the following steps:

a first step of frame member preparation: according to the light frame framework and the size requirement, pipe parts with different sizes are cut for frame components, wherein the frame components comprise head pipes, upper pipes, lower pipes, stand pipes and five-way pipes;

and a second step of welding components of each part by adopting carbon dioxide arc welding: specifically, carbon dioxide gas is conveyed for 1-2s in advance through a gas supply system, welding is carried out through a welding robot based on an intelligent vision system, and gas supply is stopped after welding is stopped;

wherein the liquid carbon dioxide of steel bottle filling that adopts needs dry dehydration to reduce the aqueous vapor content in the carbon dioxide gas, specific requirement includes: the purity of the carbon dioxide gas is more than 99.5 percent, and the content of water and nitrogen is less than or equal to 0.1 percent;

thirdly, testing the weld strength through an impact resistance experiment system: the specific strength requirements comprise that after the steel plate falls freely for four times from a certain height, each welding part has no cracks, fractures and desoldering phenomena;

and fourthly, spraying paint on the frame which is tested to be qualified through a coating system.

Further, the carbon dioxide drying and dehydrating treatment in the second step comprises the following measures:

firstly, the newly-filled gas cylinder is inverted and drained, the gas cylinder is then placed right after the drainage is finished, then the gas is firstly released for 2-3min before use, and the gas is not used when the pressure in the gas cylinder is reduced to 980kPa, in addition, the moisture in the carbon dioxide gas is further reduced, and a dryer is arranged in the gas supply system.

Further, welding robot includes the workstation, be provided with the rolling disc on the workstation, the rolling disc is horizontal rotation under the drive of first motor. The rotary disc is provided with a support, the support is composed of two vertical supporting rods, the lower ends of the supporting rods are fixed on the rotary disc, and the upper ends of the supporting rods are provided with rotating holes. The welding fixture for clamping the frame is arranged on the support, a second motor for driving the welding fixture to vertically turn is arranged on one side of the support, and the second motor is fixed on the support. A welding mechanical arm is arranged on one side of the rotating disc, a camera and an industrial personal computer are further arranged on the workbench, and the first motor, the second motor, the welding mechanical arm and the camera are all electrically connected with the industrial personal computer;

the welding frock includes the outer frame body, the outer frame body through the axis of rotation of both sides with the support rotation is connected, is provided with axis of rotation matched with rotation hole on the support, and the output shaft of second motor is connected with the axis of rotation of outer frame body one side.

Furthermore, the inside of outer framework is provided with head pipe reference column, top tube holding ring, lower tube holding ring and five-way pipe reference column. The five-way pipe is inserted on the five-way pipe positioning column, one end of the vertical pipe abuts against the outer pipe wall of the five-way pipe, and the other end of the vertical pipe abuts against the first abutting piece. One end of the head pipe is sleeved on the head pipe positioning column, and the other end of the head pipe is abutted against the second abutting piece. The upper pipe and the lower pipe are respectively inserted in the upper pipe positioning ring and the lower pipe positioning ring, one ends of the upper pipe and the lower pipe are respectively abutted against the outer pipe wall of the vertical pipe, and the other ends of the upper pipe and the lower pipe are respectively abutted against the outer pipe wall of the head pipe;

the below of five-way pipe reference column is provided with the arc wall, and is supplementary to support and fix a position five-way pipe 14, one side of arc wall is provided with the limiting plate, the one end of five-way pipe with the limiting plate offsets, and limiting plate 37 is fixed a position the axial of five-way pipe 14.

Furthermore, the outer frame body is rectangular, sliding grooves are formed in the inner sides of two frame strips, which are arranged oppositely to the outer frame body, an inner frame body is arranged in each sliding groove, the inner frame body is of a transverse U-shaped structure, and the inner frame body slides along the sliding grooves under the driving of the adjusting piece. The head pipe positioning column and the second abutting piece are fixed on the inner frame body;

the adjusting piece is an adjusting bolt, a clamping block is arranged at the end part of the adjusting bolt, and the clamping block is cylindrical. The adjusting bolt is in threaded fit with a first screw hole formed in the outer frame body, the clamping block is rotationally clamped with a clamping hole formed in one side of the inner frame body, and the clamping hole is in a transverse T shape;

first piece and the second of supporting are supported tight the piece and are constituteed by control screw and support the tight block. One end of the control screw rod is provided with a control knob, one side of the abutting block is provided with a guide rod, and a second screw hole matched with the control screw rod in a threaded mode is formed in the abutting block. The outer frame body and the inner frame body are respectively provided with a rotating hole which is matched with the control screw in a rotating mode, and the outer frame body and the inner frame body are respectively provided with a limiting groove which is clamped with the control knob relatively. The outer frame body and the inner frame body are respectively provided with a guide hole in sliding fit with the guide rod; ensuring that the abutment block 29 slides rather than rotates when the control screw 28 rotates.

Furthermore, the gas supply system comprises a nozzle and a dryer which are arranged around a conductive nozzle, the nozzle is communicated with a gas source through the dryer, the conductive nozzle is fixedly arranged at the movable end of the welding mechanical arm through a support, a welding wire penetrates through the conductive nozzle, the welding wire is clamped and conveyed through a wire feeding wheel, the wire feeding wheel is fixedly arranged above the conductive nozzle, and an insertion opening of the conductive nozzle close to the wire feeding wheel is funnel-shaped;

the dryer comprises two drying adsorption towers, the drying adsorption towers are vertically arranged, the lower ends of the drying adsorption towers are provided with air inlets communicated with an air source, the side walls of the drying adsorption towers are provided with air outlets, the two air outlets are communicated with an annular air distribution cavity, the annular air distribution cavity is communicated with the nozzles through annular narrow gaps, an adsorbent is filled between the air inlets and the air outlets, and air valves are arranged at the air inlets and the air outlets;

the inner side wall of the drying adsorption tower is provided with heating wires in a surrounding manner, and the upper end of the drying adsorption tower is communicated with a water cooling device;

furthermore, the water cooling device comprises a gas collecting pipe, a gas collecting port at the upper end of the drying adsorption tower is communicated with a water collecting tank through the gas collecting pipe, an exhaust pipe extending upwards is arranged on the side wall of the water collecting tank opposite to the other side wall of the gas collecting pipe, a water outlet is arranged at the bottom of the water collecting tank, a cold block is arranged at the top end inside the water collecting tank, the cold block is positioned between the gas collecting pipe and an opening of the exhaust pipe on the side wall of the water collecting tank, a water containing cavity is arranged inside the cold block, and the water containing cavity is communicated with a water tank through a water pipe and a water pump to form a circulating water path;

the lower end face of the condensation block is a conical surface, a plurality of annular condensation water tanks with inclination angles increasing along the conical surface are arranged on the conical surface in the vertical direction, the openings of the condensation water tanks incline downwards, and the lower inner side faces of the condensation water tanks are arc-shaped convex faces.

Furthermore, the coating system comprises a spraying chamber, wherein the side walls of two ends of the spraying chamber are provided with movable cabin doors, the top end of the inner part of the spraying chamber is provided with a slide rail, the slide rail is used for hanging a conveying frame, two ends of the slide rail respectively extend out of the spraying chamber from the two movable cabin doors and are used for connecting other equipment, a plurality of spraying mechanical arms are arranged on two sides of the slide rail in a staggered mode, a plurality of air suction ports are arranged on the inner wall of the spraying chamber, and the air suction ports are communicated with the photo-oxidation catalysis chamber through an air duct; the air ducts are arranged inside two side walls and inside a top wall of the spray-mounting chamber, the air ducts are communicated with the photo-oxidation catalysis chamber through a plurality of air suction ports, and the air suction ports are arranged at the top of the spray-mounting chamber at equal intervals;

and a spraying system is arranged in the vent pipe, the spraying system comprises a spray head and filler arranged between the air suction port and the spray head, the filler is formed by superposing and arranging a plurality of honeycomb plates at equal intervals, and honeycomb holes of adjacent honeycomb plates are staggered mutually.

Furthermore, the impact resistance test system comprises a support bracket, wherein a lifting plate is arranged on the support bracket, the lifting plate is a horizontal plate body, and the lifting plate is driven by a lifting hydraulic cylinder to vertically move along the support bracket;

a vertically through falling hole is formed in the center of the lifting plate, a vertical fixed plate is arranged on one side of the falling hole, the fixed plate is fixedly arranged on the upper surface of the lifting plate, a sliding plate is arranged on one side, away from the falling hole, of the fixed plate, the sliding plate is a vertical plate body, and the sliding plate is parallel to the fixed plate;

and a plurality of support rods are vertically arranged on one side of the sliding plate, which faces the fixed plate. The fixed plate is provided with a plurality of sliding holes, the sliding holes horizontally penetrate through the fixed plate, and the sliding holes are horizontally matched with the supporting rods in a sliding manner;

furthermore, one side, far away from the fixed plate, of the falling hole is provided with a vertical slot, and a vertical baffle is inserted in the vertical slot in a sliding mode. After the frame is hung on the support rod, the vertical baffle plate is inserted into the vertical slot, and one end of the support rod is abutted against the plate surface of the vertical baffle plate; thereby preventing the frame from sliding off the support rod;

the supporting rod is detachably arranged, and one end of the supporting rod is in threaded connection and matching with a screw hole in the sliding plate through a threaded structure; when the model of the frame that needs to carry out the experiment changes, can pull down partial bracing piece according to frame size and shape to the frame of reply different models has improved the suitability.

A horizontal guide hole is formed in the lifting plate, and a horizontal guide rod in sliding fit with the horizontal guide hole is arranged on the plate surface of one side, away from the falling hole, of the fixed plate; ensure the sliding plate to slide horizontally and make the structure more reasonable.

An impact test groove is arranged right below the falling hole, and the projection of the falling hole in the vertical direction falls in the impact test groove, so that the frame falls in the impact test groove, and the side wall of the impact test groove can block broken objects generated after the frame falls, thereby avoiding injury to people. A slope or a step is arranged on one side of the impact test groove; the frame can be conveniently hung on the support rod.

The supporting bracket comprises a plurality of vertical guide rods, and vertical guide holes in sliding fit with the vertical guide rods are formed in the lifting plate; ensure the vertical motion of lifter plate, make the structure more reasonable.

The specific working mode is as follows: the lifter plate descends to the lowest end, the number and the position of the support rods on the sliding plate are adjusted according to the model of the frame, the frame is hung on the support rods, the vertical baffle plate is inserted into the vertical slot, one end of the support rod is made to abut against the plate surface of the vertical baffle plate, the lifter plate ascends to a specified height under the drive of the lifting hydraulic cylinder, the air cylinder drives the sliding plate to transversely move, the support plate is drawn out from the frame, and the frame falls into the impact test groove from the falling hole, so that the falling impact test is completed.

Has the advantages that: according to the production test method and the production test system for the light frame, disclosed by the invention, the components of the frame are tightly spliced through reasonable arrangement of the tool, so that the quality of a welding seam is ensured; the carbon dioxide arc welding is adopted, so that the stability of a welding seam is further ensured, and the quality of the frame is improved; adopt rational in infrastructure's impact experiment system, the effectual impact strength who verifies the frame.

Drawings

FIG. 1 is a block diagram of a method of producing a test method;

FIG. 2 is a structural view of a lightweight frame;

FIG. 3 is a block diagram of a welding robot;

FIG. 4 is a view showing the construction of the bottom surface of the welding robot;

FIG. 5 is a view of the construction of the tool;

FIG. 6 is an exploded view of the tooling;

FIG. 7 is an external structural view of a gas supply system;

FIG. 8 is an internal structural view of the gas supply system;

FIG. 9 is a view showing the structure of a water cooling apparatus;

FIG. 10 is a block diagram of a coating system;

FIG. 11 is a block diagram of an impact resistant system;

FIG. 12 is a front view structural diagram of an impact resistance system;

FIG. 13 is a rear view structural view of the impact resistance system;

FIG. 14 is an exploded side view of the ballistic system;

FIG. 15 is a view showing the construction of the slide plate.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

The production test method and the production test system for the lightweight frame as shown in the attached figures 1-15 comprise the following steps:

a first step of frame member preparation: according to the light frame framework and the size requirement, pipe parts with different sizes are cut for frame components, wherein the frame components comprise a head pipe 10, an upper pipe 11, a lower pipe 12, a stand pipe 13 and a five-way pipe 14;

wherein the liquid carbon dioxide that the steel bottle that adopts was filled needs dry dehydration to reduce the moisture content in the carbon dioxide gas, specific requirement includes: the purity of the carbon dioxide gas is more than 99.5 percent, and the content of water and nitrogen is less than or equal to 0.1 percent;

and step three, testing the weld strength through an impact resistance experiment system: the specific strength requirements include that after four times of free fall from a certain height, each welding part has no cracks, fractures and desoldering phenomena;

and fourthly, spraying paint on the qualified frame through a coating system.

And the carbon dioxide drying and dehydrating treatment in the second step comprises the following measures:

the method comprises the steps of firstly, reversely pouring water into a new filling gas cylinder, righting the gas cylinder after the water pouring is finished, then, deflating for 2-3min before use, and not using when the pressure of gas in the cylinder is reduced to 980kPa, in addition, further reducing the moisture in carbon dioxide gas, and arranging a dryer in a gas supply system.

Welding robot includes workstation 1, be provided with rolling disc 2 on the workstation 1, rolling disc 2 is the level under the drive of first motor 3 and is rotated. The rotary disc 2 is provided with a support 4, the support 4 is composed of two vertical supporting rods, the lower ends of the supporting rods are fixed on the rotary disc 2, and the upper ends of the supporting rods are provided with rotating holes. The frame welding device is characterized in that a welding tool 5 for clamping a frame is arranged on the support 4, a second motor 6 for driving the welding tool 5 to vertically turn is arranged on one side of the support 4, and the second motor 6 is fixed on the support 4. A welding mechanical arm 7 is arranged on one side of the rotating disc 2, a camera 8 and an industrial personal computer 9 are further arranged on the workbench 1, and the first motor 3, the second motor 6, the welding mechanical arm 7 and the camera 8 are electrically connected with the industrial personal computer 9;

the camera 8 is used to acquire image information during the welding process. The industrial personal computer 9 processes image information in the welding process and sends instruction information to control the welding mechanical arm 7, the first motor 3 and the second motor 6. The angle and the position of the welding tool can be adjusted by the first motor 3 and the second motor 6, and welding of the mechanical arm 3 is facilitated.

Welding frock 5 includes outer frame body 15, outer frame body 15 through the axis of rotation of both sides with support 4 rotates to be connected, is provided with axis of rotation matched with rotation hole on the support 4, and the output shaft of second motor 6 is connected with the axis of rotation of outer frame body 15 one side.

The inner part of the outer frame body 15 is provided with a head tube positioning column 16, an upper tube positioning ring 17, a lower tube positioning ring 18 and a five-way tube positioning column 19. The five-way pipe 14 is inserted into the five-way pipe positioning column 19, one end of the vertical pipe 13 abuts against the outer pipe wall of the five-way pipe 14, and the other end of the vertical pipe 13 abuts against the first abutting piece 20. One end of the head pipe 10 is sleeved on the head pipe positioning column 16, and the other end of the head pipe 10 abuts against the second abutting piece 21. The upper pipe 11 and the lower pipe 12 are respectively inserted into an upper pipe positioning ring 17 and a lower pipe positioning ring 18, one end of each of the upper pipe 11 and the lower pipe 12 abuts against the outer pipe wall of the stand pipe 13, and the other end of each of the upper pipe 11 and the lower pipe 12 abuts against the outer pipe wall of the head pipe 10;

the below of five-way pipe reference column 19 is provided with arc wall 36, and is supplementary to support and fix a position five-way pipe 14, one side of arc wall 36 is provided with limiting plate 37, the one end of five-way pipe 14 with limiting plate 37 offsets, and limiting plate 37 is fixed a position the axial of five-way pipe 14.

The outer frame body 15 is rectangular, sliding grooves 22 are formed in the inner sides of two frame strips, opposite to the outer frame body 15, of the two frame strips, an inner frame body 23 is arranged in each sliding groove 22, the inner frame body 23 is of a transverse U-shaped structure, and the inner frame body 23 slides along the sliding grooves 22 under the driving of the adjusting piece. The head pipe positioning column 16 and the second abutting piece 21 are fixed on the inner frame 23;

after the head tube 10 is clamped and fixed on the inner frame 23, the inner frame 23 is driven to slide by the adjusting member, so that the two ends of the upper tube 11 and the lower tube 12 can be abutted against the outer tube walls of the head tube 10 and the vertical tube 13 more tightly, and the clamping and fixing effect of the welding tool 5 is improved.

The adjusting part is an adjusting bolt 24, a clamping block 25 is arranged at the end part of the adjusting bolt 24, and the clamping block 25 is cylindrical. The adjusting bolt 24 is in threaded fit with a first screw hole 26 arranged on the outer frame body 15, the clamping block 25 is rotationally clamped with a clamping hole 27 arranged on one side of the inner frame body 23, and the clamping hole 27 is in a transverse T shape;

the locking block 25 and the locking hole 27 cooperate to drive the inner frame 23 to slide along the sliding groove 22 when the adjusting bolt 24 and the first screw hole 26 are rotated relatively.

The first abutting member 20 and the second abutting member 21 are both composed of a control screw 28 and an abutting block 29. One end of the control screw 28 is provided with a control knob 30, one side of the abutting block 29 is provided with a guide rod 31, and the abutting block 29 is provided with a second screw hole 32 which is in threaded fit with the control screw 28. The outer frame body 15 and the inner frame body 23 are respectively provided with a rotating hole 33 which is in rotating fit with the control screw 28, and the outer frame body 15 and the inner frame body 23 are respectively provided with a limiting groove 34 which is in relative clamping connection with the control knob 30. The outer frame body 15 and the inner frame body 23 are respectively provided with a guide hole 35 which is in sliding fit with the guide rod 31; ensuring that the abutment block 29 slides rather than rotates when the control screw 28 rotates.

The gas supply system comprises a nozzle 42 and a dryer which are arranged around a contact tip 41, wherein the nozzle 42 is communicated with a gas source through the dryer, the contact tip 41 is fixedly arranged at the movable end of a welding mechanical arm 47 through a support, a welding wire 43 penetrates through the contact tip 41, the welding wire 43 is pinch-fed through a wire feeding wheel 44, the wire feeding wheel 44 is fixedly arranged above the contact tip 41, and the contact tip 41 is funnel-shaped close to an insertion opening of the wire feeding wheel 44;

through the nozzles arranged in a surrounding manner, a layer of carbon dioxide protective barrier is formed on the outer side of the welding position, so that bubbles generated by oxidation are avoided, and the welding seam is more stable; the funnel-shaped insertion opening is convenient for easy insertion of the welding wire; the dryer is arranged to reduce the content of water vapor in the shielding gas, so that the purity of the shielding gas is improved, and the welding quality is guaranteed.

The dryer comprises two drying adsorption towers 45, the drying adsorption towers 45 are vertically arranged, the lower end of each drying adsorption tower 45 is provided with an air inlet 46 communicated with an air source, the side wall of each drying adsorption tower 45 is provided with an air outlet 47, the two air outlets 47 are communicated with an annular air distribution chamber 56, the annular air distribution chamber 56 is communicated with the nozzle 42 through an annular narrow slit 57, an adsorbent is filled between the air inlet 46 and the air outlets 47, and air valves are arranged at the air inlet 46 and the air outlets 47;

because the adsorption tower is used for a long time, the adsorption capacity is reduced, so that the adsorption tower needs to be regenerated after being used for a period of time, the two adsorption towers alternately work, and when one adsorption tower is regenerated, the other adsorption tower can take over to work, thereby effectively improving the working efficiency; the annular gas distribution cavity is used as a transition cavity, so that the protective gas is uniformly distributed when being sprayed out from the nozzle to form a uniform protective gas barrier; the annular narrow gap 17 plays a certain flow limiting role, so that gas can be quickly filled in the annular gas distribution cavity, and the effect of uniform gas distribution is achieved.

The heating wires 48 are arranged on the inner side wall of the drying adsorption tower 45 in a surrounding mode, and the upper end of the drying adsorption tower 45 is communicated with a water cooling device 49;

the water cooling device 49 comprises a gas collecting pipe 50, a gas collecting opening 51 at the upper end of the drying adsorption tower 45 is communicated with a water collecting tank 52 through the gas collecting pipe 50, an exhaust pipe 54 extending upwards is arranged on the water collecting tank 52 relative to the other side wall of the gas collecting pipe 50, a water discharging opening is arranged at the bottom of the water collecting tank 52, a cold block 53 is arranged at the top end inside the water collecting tank 52, the cold block 53 is positioned between the gas collecting pipe 50 and the opening of the exhaust pipe 54 on the side wall of the water collecting tank 52, a water containing cavity 53-1 is arranged inside the cold block 53, and the water containing cavity 53-1 is communicated with a water tank 55 through a water pipe and a water pump to form a circulating water path;

in the regeneration process of the adsorption tower, air valves of the air inlet and the air outlet are firstly closed, then the adsorbent is heated through the heating wire, so that adsorbed water is evaporated, the water vapor rises to enter the water cooling device, the water vapor is separated through condensation, and the separated air and condensed water are respectively discharged through the air outlet and the water outlet.

The lower end face of the cold condensate tank 53 is a conical surface, a plurality of annular condensate tanks 53-2 with inclination angles increasing along the conical surface are arranged on the conical surface in the vertical direction, openings of the condensate tanks 53-2 are inclined downwards, and the lower inner side face of the condensate tank 53-2 is an arc-shaped convex face; annular water condensing tank can increase the area of contact of aqueous vapor and cold congeals the piece, and when aqueous vapor flowed along water condensing tank, carries out the heat absorption of half parcel formula, and it is better to congeal the water effect, and inclines decurrent notch to and the bellied lower tank surface of arc be convenient for the comdenstion water landing and collect in the catchment jar.

The coating system comprises a spraying chamber 81, wherein the side walls of two ends of the spraying chamber 81 are provided with movable cabin doors 82, the top end inside the spraying chamber 81 is provided with a slide rail 83, the slide rail 83 is used for suspending a conveying frame, two ends of the slide rail 83 respectively extend out of the two movable cabin doors 82 to form the spraying chamber 81 and are used for connecting other equipment, a plurality of spraying mechanical arms 84 are arranged on two sides of the slide rail 83 in a staggered mode, the inner wall of the spraying chamber 81 is provided with a plurality of air suction ports 85, and the air suction ports 85 are communicated with a photo-oxidation catalysis chamber 88 through an air duct 87; the ventilating pipes 87 are arranged inside two side walls and the top wall of the spraying chamber 81, the ventilating pipes 87 are communicated with the photo-oxidation catalysis chamber 88 through a plurality of air suction openings 89, and the air suction openings 89 are arranged at the top of the spraying chamber 81 at equal intervals;

the sliding rail is controlled by a control system, moves for a certain displacement each time to ensure that the number of the frames entering the spraying chamber is exactly corresponding to that of the spraying mechanical arms, the movable cabin door is closed in the spraying process, a relatively closed effect is achieved, a large amount of waste gas is prevented from leaking, the waste gas is better absorbed by the air suction port 85, and when the spraying of a batch of frames is completed, the movable cabin door is opened and a new batch is sent; the suction force which is large enough is generated through the plurality of suction openings to ensure the suction effect of the suction opening 85, and the suction openings are arranged in an equidistant way to ensure that the waste gas enters the photo-oxidation chamber to be uniformly distributed, thereby achieving better treatment effect.

The plurality of air suction ports 85 include an upper air suction port which is positioned at the top end of the inside of the spraying chamber and is obliquely arranged, and lower air suction ports which are positioned at the lower ends of the inner walls at the two sides of the spraying chamber, the upper air suction port and the lower air suction ports are arranged along the arrangement direction of the slide rail, and the number of the upper air suction port and the number of the lower air suction ports are two, and the two air suction ports are respectively positioned at the two sides of the slide rail; the upper air suction port is right opposite to the spraying operation area; through reasonable arrangement of the positions of the upper air suction port and the lower air suction port, waste gas in the spraying chamber is effectively absorbed, the upper air suction port can effectively absorb the waste gas in a spraying operation area, and the lower air suction port can absorb the waste gas which is relatively sunk under the action of gravity;

ultraviolet irradiation lamps are uniformly arranged on the inner wall of the photo-oxygen catalysis chamber; the waste gas is irradiated by a special C-waveband UV ultraviolet ray in the photo-oxidation catalysis chamber, so that the waste gas is decomposed to generate free oxygen, meanwhile, the free oxygen is unstable and is easy to combine with oxygen to generate ozone, the ozone has good elimination effect on pungent smell and small molecular compounds in the waste gas, and water, carbon dioxide and other nontoxic and harmless small molecular substances generated by decomposition are discharged through a water outlet and an air outlet;

the bottom of the spraying chamber is provided with a reservoir which is positioned below the lower air suction port; the waste water produced by spraying flows into the reservoir along the side wall and the ventilation pipeline so as to be convenient for extraction treatment and further improve the environmental protection effect.

A spraying system 91 is arranged in the air duct 87, the spraying system 91 comprises a spray head 92 and a filler 93 arranged between the air suction port (85) and the spray head, the filler 93 is formed by overlapping and arranging a plurality of honeycomb plates 94 at equal intervals, and honeycomb holes of the adjacent honeycomb plates 94 are staggered;

by arranging the spraying system, some water-soluble and large-particle components can be removed by spraying before the waste gas enters the photo-oxidation catalytic chamber, so that the waste gas is precipitated, and acid and alkali components in the waste gas can be correspondingly neutralized according to different selected spraying liquids; through the honeycomb plate arranged at the air suction port at equal intervals, the air distribution effect and the water supplementing effect are achieved, so that the waste gas and the spraying liquid are uniformly distributed in the filler, and the effect of full contact is achieved.

The impact resistance test system comprises a support bracket 61, wherein a lifting plate 62 is arranged on the support bracket 61, the lifting plate 62 is a horizontal plate body, and the lifting plate 62 is driven by a lifting hydraulic cylinder 63 to vertically move along the support bracket 61;

a vertically through falling hole 64 is formed in the center of the lifting plate 62, a vertical fixing plate 65 is arranged on one side of the falling hole 64, the fixing plate 65 is fixedly arranged on the upper surface of the lifting plate 62, a sliding plate 66 is arranged on one side, away from the falling hole 64, of the fixing plate 65, the sliding plate 66 is a vertical plate body, and the sliding plate 66 is parallel to the fixing plate 65;

a plurality of support bars 67 are vertically provided on a side of the sliding plate 66 facing the fixed plate 65. A plurality of sliding holes 69 are formed in the fixing plate 65, the sliding holes 69 horizontally penetrate through the fixing plate 65, and the sliding holes 69 are horizontally matched with the supporting rods 67 in a sliding manner;

due to the fact that the hole-shaped structure and the annular structure exist on the frame, when the shock resistance of the frame is required to be detected through a drop test, the frame can be hung on the supporting rod. The lifting plate drives the frame to rise to a specified height, the sliding plate moves horizontally under the driving of the air cylinder, and therefore the supporting rod is driven to be separated from the sliding hole, the frame loses the support of the supporting rod and falls from the falling hole, and the falling impact test is completed.

One side of the falling hole 64, which is far away from the fixing plate 65, is provided with a vertical slot 70, and a vertical baffle 71 is inserted in the vertical slot 70 in a sliding manner. After the frame is hung on the support rod 67, the vertical baffle 71 is inserted into the vertical slot 70, and one end of the support rod 67 is abutted against the plate surface of the vertical baffle 71;

the support rod 67 is detachably arranged, one end of the support rod 67 is in threaded connection with the screw hole 72 on the sliding plate 66 through a threaded structure, and when the model of the frame to be tested changes, part of the support rod can be detached according to the size and the shape of the frame, so that the frame can be used for different models of frames, and the applicability is improved;

a horizontal guide hole 73 is formed in the lifting plate 62, and a horizontal guide rod 74 which is in sliding fit with the horizontal guide hole 73 is arranged on the plate surface of one side of the fixing plate 65, which is far away from the falling hole 64; ensure the sliding plate to slide horizontally and make the structure more reasonable.

An impact test groove 77 is arranged right below the falling hole 64, and the projection of the falling hole 64 in the vertical direction falls into the impact test groove 77, so that the frame falls into the impact test groove, and the side wall of the impact test groove can block broken objects generated after the frame falls, thereby avoiding the damage to people; a slope or a step is arranged on one side of the impact test groove 77; the frame can be conveniently hung on the support rod.

The supporting bracket 61 comprises a plurality of vertical guide rods 76, and the lifting plate 62 is provided with vertical guide holes 75 in sliding fit with the vertical guide rods 76; ensure the vertical motion of lifter plate, make the structure more reasonable.

The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention described above, and such modifications and adaptations are intended to be within the scope of the invention.

Claims

1. A production test method for a lightweight frame is characterized by comprising the following steps:

a first step of frame member preparation: according to the light frame framework and the size requirement, pipe parts with different sizes are cut to be used for frame components, wherein the frame components comprise a head pipe (10), an upper pipe (11), a lower pipe (12), a stand pipe (13) and a five-way pipe (14);

and a second step, welding each part of components by adopting carbon dioxide arc welding: specifically, carbon dioxide gas is conveyed for 1-2s in advance through a gas supply system, welding is carried out through a welding robot based on an intelligent vision system, and gas supply is stopped after welding is stopped;

fourthly, spraying paint on the qualified frame through a coating system;

firstly, inverting a newly filled gas cylinder to drain water, righting the gas cylinder after the water drainage is finished, then deflating for 2-3min before use, and not using when the pressure of gas in the gas cylinder is reduced to 980kPa, in addition, further reducing the moisture in carbon dioxide gas, and arranging a dryer in the gas supply system;

the welding robot comprises a workbench (1), wherein a rotating disc (2) is arranged on the workbench (1), the rotating disc (2) is driven by a first motor (3) to horizontally rotate, a support (4) is arranged on the rotating disc (2), the support (4) consists of two vertical supporting rods, the lower ends of the supporting rods are fixed on the rotating disc (2), and rotating holes are formed in the upper ends of the supporting rods; a welding tool (5) for clamping the frame is arranged on the support (4), a second motor (6) for driving the welding tool (5) to vertically turn is arranged on one side of the support (4), and the second motor (6) is fixed on the support (4); a welding mechanical arm (7) is arranged on one side of the rotating disc (2), a camera (8) and an industrial personal computer (9) are further arranged on the workbench (1), and the first motor (3), the second motor (6), the welding mechanical arm (7) and the camera (8) are electrically connected with the industrial personal computer (9);

the welding tool (5) comprises an outer frame body (15), the outer frame body (15) is rotatably connected with the support (4) through rotating shafts on two sides, rotating holes matched with the rotating shafts are formed in the support (4), and an output shaft of the second motor (6) is connected with the rotating shaft on one side of the outer frame body (15);

a head pipe positioning column (16), an upper pipe positioning ring (17), a lower pipe positioning ring (18) and a five-way pipe positioning column (19) are arranged inside the outer frame body (15); the five-way pipe (14) is inserted into the five-way pipe positioning column (19), one end of the vertical pipe (13) abuts against the outer pipe wall of the five-way pipe (14), the other end of the vertical pipe (13) abuts against the first abutting piece (20), one end of the head pipe (10) is sleeved on the head pipe positioning column (16), the other end of the head pipe (10) abuts against the second abutting piece (21), the upper pipe (11) and the lower pipe (12) are respectively inserted into the upper pipe positioning ring (17) and the lower pipe positioning ring (18), one ends of the upper pipe (11) and the lower pipe (12) abut against the outer pipe wall of the vertical pipe (13), and the other ends of the upper pipe (11) and the lower pipe (12) abut against the outer pipe wall of the head pipe (10);

an arc-shaped groove (36) is formed below the five-way pipe positioning column (19), a limiting plate (37) is arranged on one side of the arc-shaped groove (36), and one end of the five-way pipe (14) abuts against the limiting plate (37);

the outer frame body (15) is rectangular, sliding grooves (22) are formed in the inner sides of two frame strips, opposite to the outer frame body (15), inner frame bodies (23) are arranged in the sliding grooves (22), the inner frame bodies (23) are of a transverse U-shaped structure, the inner frame bodies (23) slide along the sliding grooves (22) under the driving of adjusting parts, and the head pipe positioning columns (16) and the second abutting parts (21) are fixed on the inner frame bodies (23);

the adjusting part is an adjusting bolt (24), a clamping block (25) is arranged at the end part of the adjusting bolt (24), the clamping block (25) is cylindrical, the adjusting bolt (24) is in threaded fit with a first screw hole (26) formed in the outer frame body (15), the clamping block (25) is rotatably clamped with a clamping hole (27) formed in one side of the inner frame body (23), and the clamping hole (27) is in a transverse T-shaped shape;

first support piece (20) and second support piece (21) by control screw (28) with support tight piece (29) and constitute, the one end of control screw (28) is provided with control knob (30), one side of supporting tight piece (29) is provided with guide bar (31), support and be provided with on tight piece (29) with control screw (28) spiro union complex second screw (32), be provided with respectively on outer frame (15) and the interior frame (23) with control screw (28) normal running fit's rotation hole (33), be provided with respectively on outer frame (15) and the interior frame (23) with control knob (30) relative joint spacing groove (34), be provided with respectively on outer frame (15) and the interior frame (23) with guide bar (31) sliding fit's guiding hole (35).

2. The production test method for the lightweight vehicle frame according to claim 1, characterized in that: the gas supply system comprises a nozzle (42) and a dryer which are arranged around a conductive nozzle (41), the nozzle (42) is communicated with a gas source through the dryer, the conductive nozzle (41) is fixedly arranged at the movable end of a welding mechanical arm (7) through a support, a welding wire (43) penetrates through the conductive nozzle (41), the welding wire (43) is clamped and conveyed through a wire feeding wheel (44), the wire feeding wheel (44) is fixedly arranged above the conductive nozzle (41), and an insertion opening of the conductive nozzle (41), which is close to the wire feeding wheel (44), is funnel-shaped;

the dryer comprises two drying adsorption towers (45), the drying adsorption towers (45) are vertically arranged, the lower ends of the drying adsorption towers (45) are provided with air inlets (46) communicated with an air source, the side walls of the drying adsorption towers (45) are provided with air outlets (47), the two air outlets (47) are communicated with an annular air distribution cavity (56), the annular air distribution cavity (56) is communicated with the nozzle (42) through an annular narrow slit (57), an adsorbent is filled between the air inlets (46) and the air outlets (47), and air valves are arranged at the air inlets (46) and the air outlets (47);

the heating wire (48) is arranged on the inner side wall of the drying adsorption tower (45) in a surrounding mode, and the upper end of the drying adsorption tower (45) is communicated with a water cooling device (49).

3. The lightweight frame production test method according to claim 2, characterized in that: the water cooling device (49) comprises a gas collecting pipe (50), a gas collecting port (51) at the upper end of the drying adsorption tower (45) is communicated with a water collecting tank (52) through the gas collecting pipe (50), an exhaust pipe (54) which extends upwards is arranged on the water collecting tank (52) and is opposite to the side wall of the other side of the gas collecting pipe (50), a water discharging port is arranged at the bottom of the water collecting tank (52), a cold block (53) is arranged at the top end inside the water collecting tank (52), the cold block (53) is positioned between the gas collecting pipe (50) and an opening of the exhaust pipe (54) on the side wall of the water collecting tank (52), a water containing cavity (53-1) is arranged inside the cold block (53), and the water containing cavity (53-1) is communicated with a water tank (55) through a water pipe and a water pump to form a circulating water path;

the lower end face of the cold coagulation block (53) is a conical surface, a plurality of annular coagulation grooves (53-2) with inclination angles increasing along the conical surface are arranged on the conical surface in the vertical direction, the openings of the coagulation grooves (53-2) are inclined downwards, and the lower inner side face of the coagulation groove (53-2) is an arc-shaped convex face.

4. The production test method for the lightweight frame according to claim 1, characterized in that: the coating system comprises a spraying chamber (81), wherein the side walls of two ends of the spraying chamber (81) are provided with movable cabin doors (82), the top end inside the spraying chamber (81) is provided with a slide rail (83), the slide rail (83) is used for suspending a conveying frame, two ends of the slide rail (83) respectively extend out of the two movable cabin doors (82) to form the spraying chamber (81) for connecting other equipment, two sides of the slide rail (83) are provided with a plurality of spraying mechanical arms (84) in a staggered manner, the inner wall of the spraying chamber (81) is provided with a plurality of air suction ports (85), and the air suction ports (85) are communicated with a photo-oxygen catalysis chamber (88) through an air duct (87); the air duct (87) is arranged inside two side walls and the top wall of the spray-mounting chamber (81), the air duct (87) is communicated with the photo-oxidation catalysis chamber (88) through a plurality of air suction openings (89), and the air suction openings (89) are arranged at the top of the spray-mounting chamber (81) at equal intervals;

a spraying system (91) is arranged in the air duct (87), the spraying system (91) comprises a spray head (92) and a filler (93) arranged between the air suction port (85) and the spray head, the filler (93) is formed by overlapping and arranging a plurality of honeycomb plates (94) at equal intervals, and honeycomb holes of the adjacent honeycomb plates (94) are staggered.

5. The production test method for the lightweight frame according to claim 1, characterized in that: the anti-impact test system comprises a supporting bracket (61), wherein a lifting plate (62) is arranged on the supporting bracket (61), the lifting plate (62) is a horizontal plate body, and the lifting plate (62) vertically moves along the supporting bracket (61) under the driving of a lifting hydraulic cylinder (63);

a vertically through falling hole (64) is formed in the center of the lifting plate (62), a vertical fixing plate (65) is arranged on one side of the falling hole (64), the fixing plate (65) is fixedly arranged on the upper surface of the lifting plate (62), a sliding plate (66) is arranged on one side, away from the falling hole (64), of the fixing plate (65), the sliding plate (66) is a vertical plate body, and the sliding plate (66) is parallel to the fixing plate (65);

the side, facing the fixed plate (65), of the sliding plate (66) is vertically provided with a plurality of supporting rods (67), the fixed plate (65) is provided with a plurality of sliding holes (69), the sliding holes (69) horizontally penetrate through the fixed plate (65), and the sliding holes (69) are in horizontal sliding fit with the supporting rods (67).

6. The production test method for the lightweight frame as set forth in claim 5, wherein: a vertical slot (70) is formed in one side, away from the fixing plate (65), of the falling hole (64), a vertical baffle (71) is inserted in the vertical slot (70) in a sliding mode, after the frame is hung on the supporting rod (67), the vertical baffle (71) is inserted into the vertical slot (70), and one end of the supporting rod (67) abuts against the plate surface of the vertical baffle (71);

the support rod (67) is detachably arranged, and one end of the support rod (67) is in threaded connection with a screw hole (72) in the sliding plate (66) through a threaded structure;

a horizontal guide hole (73) is formed in the lifting plate (62), and a horizontal guide rod (74) in sliding fit with the horizontal guide hole (73) is arranged on the plate surface of one side, away from the falling hole (64), of the fixing plate (65);

an impact test groove (77) is arranged right below the falling hole (64), the projection of the falling hole (64) in the vertical direction falls in the impact test groove (77), and a slope or a step is arranged on one side of the impact test groove (77);

the supporting bracket (61) comprises a plurality of vertical guide rods (76), and the lifting plate (62) is provided with vertical guide holes (75) in sliding fit with the vertical guide rods (76).