CN113182721B

CN113182721B - Multipoint automatic welding machine for engine heat-insulating cover

Info

Publication number: CN113182721B
Application number: CN202110530180.4A
Authority: CN
Inventors: 王志强
Original assignee: Kunshan Qianggao Precision Mould Co ltd
Current assignee: Huzhou Xiangao Metal Technology Co.,Ltd.
Priority date: 2021-05-14
Filing date: 2021-05-14
Publication date: 2022-10-28
Anticipated expiration: 2041-05-14
Also published as: CN113182721A

Abstract

The invention discloses a multipoint automatic welding machine for an engine heat-insulating cover, which comprises a bottom plate bracket, wherein the top of the bottom plate bracket is fixedly connected with a bottom plate, a support frame is arranged on the bottom plate, a plurality of welding devices arranged around a welding seam are installed on the support frame, an inverter is arranged on the right side of the bottom plate bracket, a wiring box is arranged above the inverter, the welding devices comprise a sliding plate and an air cylinder, at least one pair of electrode assemblies is arranged on the sliding plate, the sliding plate is driven by the air cylinder, each electrode assembly comprises electrode bars, one electrode bar of each pair of adjacent electrode assemblies is connected with a negative electrode, and the other electrode bar is connected with a positive electrode; the invention has the advantages of stable structure, good protection, high automation degree and high welding efficiency.

Description

Multipoint automatic welding machine for engine heat-insulating cover

Technical Field

The invention relates to the technical field of automatic welding, in particular to a multipoint automatic welding machine for an engine heat-insulating cover.

Background

The automatic welding machine is widely applied to the fields of plastics, automobile manufacturing industry, metal processing, hardware and household appliances, steel structures, pressure vessels, machining and manufacturing, shipbuilding, aerospace and the like. After the automatic welding machine is applied, the appearance and the internal quality of a welding part are greatly improved, the stability of the quality is ensured, the labor intensity is reduced, the labor environment is improved, the requirement of manual welding skill and the production cost are reduced, and the production efficiency is improved.

In recent 20 years, with the development of digitization, automation, computer and mechanical design technologies and the high importance on welding quality, automatic welding has developed into an advanced manufacturing technology, and automatic welding equipment plays an increasingly important role in various industrial applications, and the application range is rapidly expanding. In modern industrial production, mechanization and automation of the welding production process is a necessary trend for the modernization of the welding mechanism manufacturing industry.

At present, welding devices for circular seams appear in the market, but the welding devices still have the defects of high energy consumption, cooling of electrodes, welding of workpieces with few welding seams, regular shapes and few welding spots, and automatic welding of workpieces with many welding seams, irregular distribution and large number of welding spots.

Disclosure of Invention

The invention aims to provide a multipoint automatic welding machine for an engine heat-insulating cover, which aims to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

a multipoint automatic welding machine for an engine heat-insulating cover comprises a bottom plate support, wherein a bottom plate is fixedly connected to the top of the bottom plate support, a support frame is arranged on the bottom plate, a plurality of welding devices arranged around a welding seam are mounted on the support frame, an inverter is arranged on the right side of the bottom plate support, a wiring box is arranged above the inverter, each welding device comprises a sliding plate and an air cylinder, at least one pair of electrode assemblies is arranged on the sliding plate, the sliding plate is driven by the air cylinder, each electrode assembly comprises electrode rods, one electrode rod of each pair of electrode assemblies is connected with a negative electrode, and the other electrode rod is connected with a positive electrode;

the base plate is fixedly connected with a pair of bases, the bases are provided with dies, and the dies are sleeved with heat preservation covers.

Preferably, the electrode assembly comprises a spring seat and a slide rail seat which are fixed on the sliding plate, an electrode mounting seat is slidably mounted on the slide rail seat, an electrode rod is fixedly mounted on the electrode mounting seat, a buffer spring is embedded in the spring seat, and the other end of the buffer spring is in abutting connection with the end part of the electrode mounting seat;

preferably, the welding device specifically comprises end welding devices arranged at the left end and the right end of the bottom plate, lateral welding devices arranged at the front end and the rear end of the bottom plate, a top welding device arranged above the bottom plate and a bottom welding device arranged at the center of the bottom plate;

the die is characterized in that a rotating frame is rotatably connected above the bottom plate, a pair of pressing plates is fixedly connected to the rotating frame, the pressing plates are arranged above the die in a pressing mode, the top welding device is arranged on the pressing plates, mounting seats are arranged at the front end and the rear end of the bottom plate, and the lateral welding device is arranged on the mounting seats.

Preferably, both ends fixedly connected with curb plate about the bottom plate, tip welding set sets up on the curb plate, the rotating turret rotates to be connected in the rear end of curb plate.

Preferably, the rear end of the side plate is fixedly connected with a supporting plate, and a cushion pad is fixedly connected to the supporting plate.

Preferably, a handle is fixedly connected to the front end of the rotating frame.

Preferably, a locking handle is arranged at the top of the side plate on the left side, a locking buckle is arranged on the left side of the rotating frame, and the locking handle is in clamping fit with the locking buckle.

Preferably, the top of the base is slidably connected with a buffer plate, the upper end face of the buffer plate is provided with a circular arc plate-shaped contact piece, and the lower end of the pressing plate is provided with a semicircular clamping groove.

Preferably, the side wall of the base is fixedly connected with a guide rod seat, a guide rod is slidably connected in the guide rod seat, a spring is sleeved outside the guide rod, the top of the guide rod is fixedly connected with a bearing plate, and the bearing plate is located below the buffer plate.

Preferably, still fixedly connected with reference column on the base, be provided with the locating hole on the buffer board, the locating hole cooperates with the reference column joint.

Compared with the prior art, the invention has the beneficial effects that: before welding, a die sleeved with a heat-insulating cover is placed on a base, and then a rotating frame is pulled to press a pressing plate on the die and the heat-insulating cover to fix the die and the heat-insulating cover; the welding device comprises a fixed rear end welding device, a lateral welding device, a top welding device and a bottom welding device, wherein the top welding device and the bottom welding device are used for welding a welding line on a heat-insulating cover at the same time, and a cylinder drives an electrode assembly to move to contact with a welding seam during welding.

The blotter plays support and cushioning effect to it when opening the rotating turret, avoids vibrating too big damage welding set. The handle is convenient for lifting the rotating frame by hands. After the rotating frame is closed, the locking handle is clamped with the locking buckle to lock the rotating frame. When the semicircular clamping groove and the arc-shaped plate-shaped contact piece are used for clamping the mold and the heat insulation sleeve, the contact area is larger, and the contact piece is not easy to crush. The spring plays a role in buffering when the clamping die and the heat preservation sleeve are placed on the buffer plate. The locating hole is in clamping fit with the locating column and plays a role in limiting and guiding the buffer plate. The invention has the advantages of stable structure, good protection, high automation degree and high welding efficiency.

Drawings

FIG. 1 is a schematic diagram of an internal structure of an automatic multipoint welding machine for an engine heat-insulating cover;

FIG. 2 is a schematic structural diagram of a side welding device and an end welding device in an engine heat-insulating cover multi-point automatic welding machine;

FIG. 3 is a schematic structural diagram of a bottom welding device and a base in the multipoint automatic welding machine for the heat preservation cover of the engine;

FIG. 4 is an enlarged view of a portion of FIG. 3 at K;

FIG. 5 is a schematic view of an external structure of a multipoint automatic welding machine for an engine heat-insulating cover;

FIG. 6 is a schematic structural diagram of a welding device in a multipoint automatic welding machine for an engine heat-insulating cover;

FIG. 7 is a schematic structural diagram of an electrode assembly with electrode bars arranged at an angle in an engine heat-insulating cover multipoint automatic welding machine;

FIG. 8 is a schematic structural diagram of an electrode assembly with electrode bars arranged in parallel in a multipoint automatic welding machine for an engine heat-insulating cover.

In the figure: 1-base plate support, 2-cover box, 3-inverter, 4-base plate, 5-base, 6-buffer plate, 7-contact piece, 8-positioning column, 9-positioning hole, 10-bearing plate, 11-guide rod seat, 12-rotating frame, 13-pressing plate, 14-handle, 15-buffer pad, 16-top welding device, 17-sliding plate, 18-electrode component, 19-cylinder, 20-side plate, 21-mounting seat, 22-locking buckle, 23-locking handle, 24-side welding device, 25-end welding device, 26-bottom welding device, 27-mold, 28-heat preservation cover, 29-wiring box, 30-spring seat, 31-sliding rail seat, 32-buffer spring, 33-electrode mounting seat, 34-electrode rod, 35-electrode fine-adjustment locking block.

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.

Please refer to fig. 1 to 8:

the multipoint automatic welding machine for the engine heat-insulating cover comprises a bottom plate support 1, wherein the top of the bottom plate support 1 is fixedly connected with a bottom plate 4, a support frame is arranged on the bottom plate 4, a plurality of welding devices arranged around a welding seam are installed on the support frame, a cover box 2 covers the periphery of each welding device, an inverter 3 is arranged on the right side of the bottom plate support 1, a wiring box 29 is arranged above the inverter 3, each welding device comprises a sliding plate 17 and an air cylinder 19, a plurality of pairs of electrode assemblies 18 are arranged on the

sliding plate

17, 2 pairs or 3 pairs are preferred, and the sliding plate 17 is driven by the air cylinder 19;

the electrode assembly 18 comprises a spring seat 30 and a slide rail seat 31 which are fixed on the sliding plate 17, an electrode mounting seat 33 is slidably mounted on the slide rail seat 31, an electrode rod 34 is fixedly mounted on the electrode mounting seat 33, a buffer spring 32 is embedded in the spring seat 30, and the other end of the buffer spring 32 is in abutting connection with the end part of the electrode mounting seat 33;

the provision of the buffer spring 32 ensures that each electrode rod can be kept in good contact with the weld of the workpiece to be welded during welding.

In addition, referring to fig. 7, the electrode assembly 18 further includes an electrode fine tuning locking block 35, the electrode fine tuning locking block 35 is fixed on the electrode mounting seat 33 through a pair of bolts, the electrode bar 34 is clamped between the electrode fine tuning locking block 35 and the electrode mounting seat 33, when the extending length of the electrode bar 34 is not enough, the bolts penetrating through the electrode fine tuning locking block 35 can be loosened, and the extending length of the electrode bar 34 is manually adjusted.

Each pair of electrode assemblies 18 is adjacently arranged, wherein one electrode bar 34 is connected with a negative electrode, and the other electrode bar 34 is connected with a positive electrode;

the electrode rods 34 in the present application may be disposed at an angle with respect to each other, see fig. 7, or may be disposed in parallel with each other, see fig. 8.

A gap is left between the adjacent electrode rods 34, preferably, the distance between the center points of the front ends of the adjacent electrode rods 34 is 8-12mm, the welding point distance can be set according to the specific workpiece to be welded, and generally, the welding point distance is not too long, otherwise, the resistance is too large, and the current is not enough for welding.

The corresponding welding devices may be provided according to the shape of the weld of the workpiece to be welded, may be provided up and down, left and right, and a corresponding plurality of pairs of electrode assemblies 18 may be provided according to the arrangement of the weld points.

The device adopts a plurality of pairs of small electrode assemblies 18 for welding, can flexibly set welding devices according to the shapes and the positions of welding seams, and specifically arranges and sets the electrode assemblies 18 according to the positions of welding spots, thereby solving the problem that the welding seams of workpieces are irregular and not easy to weld when the shapes of the welding seams are complex, putting the workpieces into the welding device for one-time welding, taking out the workpieces after welding, and then putting the workpieces into the welding device for the next time, wherein the small electrode assemblies 18 are already cooled, and cooling circulating water is not needed to be set, thereby simplifying the structure and saving energy.

The base plate 4 is fixedly connected with a pair of bases 5, a mold 27 is placed on the bases 5, a heat-insulating cover 28 is sleeved outside the mold 27, a rotating frame 12 is rotatably connected above the base plate 4, a pair of pressing plates 13 are fixedly connected on the rotating frame 12, and the pressing plates 13 are pressed above the mold 27;

as a specific scheme, the welding device specifically comprises an end welding device 25 arranged at the left end and the right end of the bottom plate 4, a side welding device 24 arranged at the front end and the rear end of the bottom plate 4, a top welding device 16 arranged above the bottom plate 4 and a bottom welding device 26 arranged at the center of the bottom plate 4;

the end welding device 25, the side welding device 24, the top welding device 16 and the bottom welding device 26 all use welding devices of similar structure.

The top welding device 16 is arranged on the pressure plate 13, the front end and the rear end of the bottom plate 4 are provided with mounting seats 21, and the lateral welding device is arranged on the mounting seats 21.

Before welding, the mold 27 sleeved with the heat-insulating cover 28 is placed on the base 5, and then the rotating frame 12 is pulled to press the pressing plate 13 on the mold 27 and the heat-insulating cover 28 to fix the mold; the fixed rear end welding device 25, the side welding device 24, the top welding device 16 and the bottom welding device 26 simultaneously weld the weld line on the heat retaining cover 28, and the air cylinder 19 drives the electrode assembly 18 to move into contact with the weld seam during welding.

Preferably, the left and right ends of the bottom plate 4 are fixedly connected with side plates 20, the end welding device 25 is arranged on the side plates 20, and the rotating frame 12 is rotatably connected to the rear ends of the side plates 20. The rear end of the side plate 20 is fixedly connected with a support plate, and the support plate is fixedly connected with a cushion pad 15.

The buffer cushion 15 plays a role in supporting and buffering the rotating frame 12 when the rotating frame is opened, so that the welding device is prevented from being damaged by too much vibration.

Preferably, a handle 14 is fixedly connected to the front end of the rotating frame 12.

The handle 14 facilitates manual lifting of the turret 12.

Preferably, a locking handle 23 is arranged at the top of the side plate 20 on the left side, a locking buckle 22 is arranged on the left side of the rotating frame 12, and the locking handle 23 is in clamping fit with the locking buckle 22.

After the rotating frame 12 is closed, the locking handle 23 is clamped with the locking buckle 22 to lock the rotating frame 12.

Preferably, the top of the base 5 is slidably connected with a buffer plate 6, the upper end surface of the buffer plate 6 is provided with a circular arc plate-shaped contact piece 7, and the lower end of the pressing plate 13 is provided with a semicircular clamping groove.

When the semicircular clamping groove and the circular arc plate-shaped contact piece 7 are used for clamping the mold 27 and the heat insulation sleeve 28, the contact area is larger, and the contact piece is not easy to crush.

Preferably, a guide rod seat 11 is fixedly connected to the side wall of the base 5, a guide rod is slidably connected to the guide rod seat 11, a spring is sleeved outside the guide rod, a bearing plate 10 is fixedly connected to the top of the guide rod, and the bearing plate 10 is located below the buffer plate 6.

The spring serves as a buffer when the clamping die 27 and the insulating sleeve 28 are placed on the buffer plate 6.

Preferably, the base 5 is further fixedly connected with a positioning column 8, the buffer plate 6 is provided with a positioning hole 9, and the positioning hole 9 is in clamping fit with the positioning column 8.

The positioning hole 9 is matched with the positioning column 8 in a clamping mode, and plays a limiting and guiding role in the buffer plate 6.

The working principle of the invention is as follows: before welding, the mold 27 sleeved with the heat-insulating cover 28 is placed on the base 5, and then the rotating frame 12 is pulled to press the pressing plate 13 on the mold 27 and the heat-insulating cover 28 to fix the mold; the fixed rear end welding device 25, the side welding device 24, the top welding device 16 and the bottom welding device 26 simultaneously weld the weld line on the heat retaining cover 28, and the air cylinder 19 drives the electrode assembly 18 to move into contact with the weld seam during welding. The buffer cushion 15 plays a role in supporting and buffering the rotating frame 12 when the rotating frame is opened, so that the welding device is prevented from being damaged due to excessive vibration. The handle 14 facilitates manual lifting of the turret 12. After the rotating frame 12 is closed, the locking handle 23 is clamped with the locking buckle 22 to lock the rotating frame 12. When the semicircular clamping groove and the circular arc plate-shaped contact piece 7 are used for clamping the mold 27 and the heat insulation sleeve 28, the contact area is larger, and the contact piece is not easy to crush. The springs serve as a buffer when the clamping mold 27 and the insulating sleeve 28 are placed on the buffer plate 6. The positioning hole 9 is matched with the positioning column 8 in a clamping mode, and plays a limiting and guiding role in the buffer plate 6.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present specification describes embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and it is to be understood that all embodiments may be combined as appropriate by one of ordinary skill in the art to form other embodiments as will be apparent to those of skill in the art from the description herein.

Claims

1. The utility model provides an engine keeps warm and covers multiple spot automatic weld machine, includes bottom plate support (1), its characterized in that: the welding device comprises a sliding plate (17) and a cylinder (19), wherein at least one pair of electrode assemblies (18) are arranged on the sliding plate (17), the sliding plate (17) is driven by the cylinder (19), the electrode assemblies (18) comprise electrode rods (34), one electrode rod (34) of each pair of electrode assemblies (18) is connected with a negative electrode, and the other electrode rod (34) is connected with a positive electrode;

a pair of bases (5) is fixedly connected to the bottom plate (4), a mold (27) is placed on the bases (5), and a heat-insulating cover (28) is sleeved outside the mold (27);

the electrode assembly (18) comprises a spring seat (30) and a sliding rail seat (31) which are fixed on the sliding plate (17), an electrode mounting seat (33) is slidably mounted on the sliding rail seat (31), an electrode rod (34) is fixedly mounted on the electrode mounting seat (33), a buffer spring (32) is embedded in the spring seat (30), and the other end of the buffer spring (32) is in abutting connection with the end part of the electrode mounting seat (33);

the electrode assembly (18) further comprises an electrode fine-tuning locking block (35), the electrode fine-tuning locking block (35) is fixed on the electrode mounting seat (33) through a pair of bolts, and the electrode bar (34) is clamped between the electrode fine-tuning locking block (35) and the electrode mounting seat (33);

the welding device specifically comprises end part welding devices (25) arranged at the left end and the right end of the bottom plate (4), lateral welding devices (24) arranged at the front end and the rear end of the bottom plate (4), a top welding device (16) arranged above the bottom plate (4) and a bottom welding device (26) arranged at the center of the bottom plate (4);

a rotating frame (12) is rotatably connected above the bottom plate (4), a pair of pressing plates (13) is fixedly connected to the rotating frame (12), the pressing plates (13) are arranged above the die (27) in a pressing mode, the top welding device (16) is arranged on the pressing plates (13), mounting seats (21) are arranged at the front end and the rear end of the bottom plate (4), and the lateral welding device is arranged on the mounting seats (21);

the left end and the right end of the bottom plate (4) are fixedly connected with side plates (20), the end welding device (25) is arranged on the side plates (20), and the rotating frame (12) is rotatably connected to the rear ends of the side plates (20);

the front end of the rotating frame (12) is fixedly connected with a handle (14);

the rear end of the side plate (20) is fixedly connected with a supporting plate, and a cushion pad (15) is fixedly connected to the supporting plate;

a locking handle (23) is arranged at the top of the side plate (20) on the left side, a locking buckle (22) is arranged on the left side of the rotating frame (12), and the locking handle (23) is in clamping fit with the locking buckle (22);

the top of the base (5) is connected with a buffer plate (6) in a sliding mode, the upper end face of the buffer plate (6) is provided with a circular arc plate-shaped contact piece (7), and the lower end of the pressing plate (13) is provided with a semicircular clamping groove;

a guide rod seat (11) is fixedly connected to the side wall of the base (5), a guide rod is slidably connected in the guide rod seat (11), a spring is sleeved outside the guide rod, a bearing plate (10) is fixedly connected to the top of the guide rod, and the bearing plate (10) is located below the buffer plate (6);

still fixedly connected with reference column (8) on base (5), be provided with locating hole (9) on buffer board (6), locating hole (9) and reference column (8) joint cooperation.