CN211135890U

CN211135890U - Efficient heat exchanger slab multiple spot welding equipment

Info

Publication number: CN211135890U
Application number: CN201921020728.5U
Authority: CN
Inventors: 李建敏; 马海涛; 陈子明; 关云彪
Original assignee: Tangshan Kaiyuan Autowelding System Co ltd
Current assignee: Tangshan Kaiyuan Autowelding System Co ltd
Priority date: 2019-07-02
Filing date: 2019-07-02
Publication date: 2020-07-31
Anticipated expiration: 2029-07-02

Abstract

The utility model provides an efficient heat exchanger slab multiple spot welding equipment, belongs to resistance welding equipment technical field for weld plate heat exchanger slab. The technical scheme is as follows: the equipment body is by the base, the crossbeam, two stand equipment form longmen frame construction, preceding conveying platform and back conveying platform symmetrical arrangement are in the front of equipment body, the back both sides, many sets of welding set arrange along the crossbeam length direction of equipment body in proper order, many sets of welding set fix between the base and the crossbeam of equipment body, the chassis and the crossbeam at the equipment body are fixed to the transverse feed loading mechanism, the transverse feed loading mechanism is connected with many sets of welding set, form two rows of welding circuit that can independent control, be used for the welding of bean dices and capping welding respectively. The utility model discloses rationally distributed, the precision is high, welding strength is big, degree of automation is high, has really realized accomplishing two kinds of welding process's processing on an equipment, and welding efficiency is high, and product welding quality, size precision have all obtained effective assurance.

Description

Efficient heat exchanger slab multiple spot welding equipment

Technical Field

The utility model relates to a carry out welded processing equipment to plate heat exchanger slab belongs to resistance welding equipment technical field.

Background

The plate heat exchanger is a high-efficiency and compact heat exchange device, is widely applied to the industrial fields of petroleum, chemical industry, light industry, electric power, metallurgy, machinery, energy, food and the like, and becomes a very competitive product in a heat exchanger family. The heat exchanger plate is an important part of a plate heat exchanger and comprises an upper plate, a lower plate and bean dices, wherein the upper plate and the lower plate are parallel and opposite, a plurality of bean dices are uniformly distributed between the upper plate and the lower plate, and the bean dices are connected with the upper plate and the lower plate in a welding manner. The production process of the heat exchanger plate comprises the following steps: firstly, spot welding is carried out between a lower plate and the diced bean, the process is called diced bean welding for short, after the diced bean of the whole plate is completely welded, an upper plate is covered, and then the upper plate is welded with the diced bean and the lower plate together, and the process is called cover surface welding. In the production process, several to dozens of bean nails or cover surfaces are welded at the same time according to the width of the plate surface.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that an efficient heat exchanger slab multiple spot welding equipment is provided, this kind of welding equipment can carry out multiple spot welding simultaneously to the heat exchanger slab, both will guarantee welding strength, group to the precision, will reduce workman's intensity of labour again, improves degree of automation, improves production efficiency.

The technical scheme for solving the technical problems is as follows:

the utility model provides an efficient heat exchanger slab multiple spot welding equipment, it includes the equipment body, preceding conveying platform, back conveying platform, many sets of welding set, the transverse feed loading system, the equipment body is by the base, the crossbeam, two stand equipment form longmen frame construction, preceding conveying platform and back conveying platform symmetrical arrangement are in the preceding of equipment body, the back both sides, many sets of welding set arrange along the crossbeam length direction order of equipment body, many sets of welding set fix between the base and the crossbeam of equipment body, the transverse feed loading system is fixed on the base and the crossbeam of equipment body, the transverse feed loading system is connected with many sets of welding set.

The high-efficiency heat exchanger plate multi-spot welding equipment comprises a front conveying platform and a rear conveying platform which are identical in structure, wherein the front conveying platform and the rear conveying platform respectively comprise a rack, a conveying platform motor, a speed reducer mounting seat, a gear and rack transmission pair, a conveying platform guide rail, a carrier roller assembly, two sets of pneumatic side positioning mechanisms, a spring floating mechanism, a cam clamp and a T-shaped sliding table, the rack is a steel cuboid frame, the conveying platform motor is connected with the speed reducer, the conveying platform motor and the speed reducer are mounted on the lower portion of the speed reducer mounting seat, the speed reducer mounting seat is mounted on the lower portion of the spring floating mechanism, the spring floating mechanism is mounted on the upper plane of a sliding block of the conveying platform guide rail, the conveying platform guide rail is mounted on the upper plane of the rack, the speed reducer is connected with a gear, the rack of the gear rack transmission pair is arranged on the upper plane of a frame of the rack, the carrier roller assembly and the T-shaped sliding table are arranged on the upper plane of the rack through screws, the two sets of pneumatic side positioning mechanisms are arranged in a T-shaped slide way of the T-shaped sliding table through T-shaped nuts, the cam clamp is arranged on the lower plane of a cam clamp mounting seat in the spring floating mechanism through screws, the heat exchanger plate is placed on the carrier roller assembly, and the cam clamp is opposite to and tightly clamped with the heat exchanger plate.

Above-mentioned high efficiency heat exchanger slab multiple spot welding equipment, spring floating mechanism comprises cam clamp mount pad, two direction copper sheathing, four springs, two spring pin axles, lower plate base is sheet material welded forming's structure, and there is C type opening one end, and the other end is the flat board, direction copper sheathing embedding cam clamp mount pad, and spring pin axle passes lower plate base C type open-ended upper portion, spring, direction copper sheathing, spring and C type open-ended lower part in proper order, passes by the spring transition between the C type opening of cam clamp mount pad and lower plate base, and cam clamp mount pad freely floats in C type opening.

The cam clamp is composed of a handle, an end face cam, a cam pin shaft, an upper pressing plate, a pressing plate pin shaft and a lower pressing plate, the handle is connected to the end face cam through threads, the end face cam is fixed to the lower pressing plate through the cam pin shaft, the end face cam is in rotating fit with the cam pin shaft, the upper pressing plate and the lower pressing plate form a hinge mechanism through the pressing plate pin shaft, the lower pressing plate is fixed and fixed, one end of the upper pressing plate is in lap joint with the upper surface of the end face cam, one end of the upper pressing plate in lap joint with the end face cam moves up and down along with rotation of the end face cam, the other end of the upper pressing plate is pressed on the lower pressing plate with the pressing plate pin shaft as the center, and the heat.

Above-mentioned high-efficiency heat exchanger slab multiple spot welding equipment, pneumatic side positioning mechanism comprises cylinder mounting panel, L type support, locating piece, cylinder, and the for the locating piece for the screw install on the top of cylinder pole, for the cylinder for the screw install on the cylinder mounting panel, the cylinder mounting panel passes through screw and L type leg joint, L type support is fixed at the upper plane of T type slip table with T type nut.

The high-efficiency heat exchanger plate multi-point welding equipment is characterized in that the number of the welding devices is 10, each welding device is provided with a bean welding loop and a cover surface welding loop, and the bean welding loop and the cover surface welding loop share one welding transformer, one positive conducting plate and one negative conducting plate.

The high-efficiency heat exchanger plate multi-spot welding equipment comprises a bean curd welding loop, a bean curd positive electrode soft conductor, a bean curd positive electrode base, a bean curd positive electrode holding rod, a bean curd positive electrode flat electrode, a bean curd ceramic positioning sleeve, a bean curd negative electrode ball electrode, a bean curd negative electrode holding rod, a bean curd negative electrode base and a bean curd negative electrode soft conductor, wherein the bean curd ceramic positioning sleeve is arranged at the lower end of the bean curd positive electrode flat electrode, the bean curd positive electrode flat electrode is arranged at the lower end of the bean curd positive electrode holding rod, the bean curd positive electrode holding rod is arranged on the bean curd positive electrode base, the bean curd positive electrode base is connected with one end of the bean curd positive electrode soft conductor, the other end of the bean curd positive electrode soft conductor is arranged on a positive conductive plate, the positive conductive plate is arranged on the positive electrode of a welding transformer, the bean curd negative electrode ball electrode is arranged at the upper end of the bean curd negative electrode holding rod, the bean curd negative electrode holding rod is arranged on the bean curd negative electrode, the cathode electrode seat of the bean curd pudding is connected with one end of the cathode soft conductor of the bean curd pudding, the other end of the cathode soft conductor of the bean curd pudding is installed on the cathode conductive plate, and the cathode conductive plate is installed on the cathode of the welding transformer to form a complete bean curd pudding welding loop.

The high-efficiency heat exchanger plate multi-spot welding equipment is characterized in that the cover surface welding loop further comprises a cover surface anode soft conductor, a cover surface anode electrode seat, a cover surface anode electrode holding rod, a cover surface anode ball electrode, a cover surface cathode flat electrode, a cover surface cathode electrode holding rod, a cover surface cathode electrode seat and a cover surface cathode soft conductor, wherein the cover surface anode ball electrode is arranged at the lower end of the cover surface anode electrode holding rod, the cover surface anode electrode holding rod is arranged on the cover surface anode electrode seat, the cover surface anode electrode seat is connected with one end of the cover surface anode soft conductor, the other end of the cover surface anode soft conductor is arranged on an anode conductive plate which is arranged on the anode of the welding transformer, the cover surface cathode flat electrode is arranged at the upper end of the cover surface cathode electrode holding rod, the cover surface cathode electrode holding rod is arranged on the cover surface cathode electrode seat, the cover surface cathode electrode seat is connected with one end of the cover surface cathode soft conductor, the other end of the cover surface negative pole soft conductor is arranged on a negative pole current conducting plate, and the negative pole current conducting plate is arranged on the negative pole of the welding transformer to form a complete cover surface welding loop.

The high-efficiency heat exchanger plate multipoint welding equipment is characterized in that the transverse feeding pressurizing mechanism comprises two sets of servo feeding mechanisms, 10 sets of upper pneumatic pressurizing devices and 10 sets of lower pneumatic pressurizing devices, each set of servo feeding mechanism comprises a feeding motor, a high-precision speed reducer, a ball screw, a screw nut, a feeding guide rail, a T-shaped sliding seat and a T-shaped sliding seat connecting frame, the upper pneumatic pressurizing device and the lower pneumatic pressurizing devices are identical in structure and are composed of a double-power air cylinder mounting seat and two double-power air cylinders, and the mounting structures of the upper pneumatic pressurizing device and the lower pneumatic pressurizing devices are as follows: the double-power cylinder mounting seat is fixed on the surface of the T-shaped sliding seat through a T-shaped nut, the T-shaped sliding seat is connected with a lead screw nut through a T-shaped sliding seat connecting frame, the lead screw nut is threaded on a ball screw, the ball screw is mounted at the bottoms of a base of the equipment body and a cross beam, a feeding guide rail is mounted on the upper planes of the base of the equipment body and the cross beam, the ball screw is connected with a high-precision speed reducer, the high-precision speed reducer is connected with a feeding motor, and the high-precision speed reducer and the feeding motor are mounted at the bottoms of the.

In the high-efficiency heat exchanger plate multi-spot welding equipment, the two sets of servo feeding mechanisms are respectively arranged in the beam and the base of the equipment body, the servo feeding mechanism arranged in the beam is connected with a 10-sleeve upper pneumatic pressurizing device, the servo feeding mechanism arranged in the base is connected with a 10-sleeve lower pneumatic pressurizing device, a plurality of double-power cylinders of the 10-sleeve upper pneumatic pressurizing device and the 10-sleeve lower pneumatic pressurizing device are respectively connected with the cover surface positive electrode seat, the cover surface negative electrode seat, the cover surface positive electrode holding rod, the cover surface negative electrode holding rod, the nut positive electrode seat, the nut negative electrode seat, the nut positive electrode holding rod and the nut negative electrode holding rod, the double-power cylinders of the 10-sleeve upper pneumatic pressurizing device and the double-power cylinders of the 10-sleeve lower pneumatic pressurizing device respectively correspond up and down to form 10 groups of electrode pressurizing mechanisms.

The utility model has the advantages that:

the utility model adopts two sets of conveying platforms arranged in front and back, accurately positions the workpiece through the pneumatic side positioning mechanism, and respectively clamps two ends of the workpiece through the spring floating mechanism and the cam clamp, thereby realizing the vertical accurate feeding of the workpiece; the welding device is provided with a plurality of sets of welding devices, each set of welding device is connected with two welding loops and the double-power cylinder in parallel to form double-row welding, one double-power cylinder is controlled to be used for welding the diced beans and the other double-power cylinder is controlled to be used for welding the cover surface, and 10 diced beans or 10 cover surface welding spots can be welded at one time, so that the multi-spot welding of two processes on one device is realized, and the production efficiency is improved; and meanwhile, the adjustable T-shaped sliding seat is configured, so that the positioning and clamping of workpieces with different widths H can be realized, the efficient welding of workpieces with different bean clove intervals H can be realized, and the practicability of the equipment is improved. The utility model discloses overall structure is rationally distributed, and the group is to the precision height, welding strength is big, degree of automation is high.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

FIG. 3 is a cross-sectional view B-B of FIG. 1;

FIG. 4 is a schematic structural view of a conveying platform;

FIG. 5 is a schematic view of the transport platform in the direction of C;

FIG. 6 is a schematic structural view of a spring floating mechanism;

FIG. 7 is a schematic view of a cam clamp;

FIG. 8 is a front view of the pneumatic side positioning mechanism;

FIG. 9 is a top view of the pneumatic side positioning mechanism;

fig. 10 is a schematic structural view of the apparatus body;

FIG. 11 is a schematic view of a welding apparatus;

FIG. 12 is a schematic view of the upper pneumatic pressure device;

FIG. 13 is a schematic view of the construction of the lower pneumatic booster;

FIG. 14 is a detail view of a diced bean welding electrode;

FIG. 15 is a detail view of the facing welding electrode;

FIG. 16 is a schematic view of a infeed pressurization mechanism;

fig. 17 is a view of the infeed press mechanism M.

The device comprises a front conveying platform 1, an equipment body 2, a welding device 3, a rear conveying platform 4, a transverse feeding pressurizing mechanism 5, a cross beam 6, a stand column 7, a base 8, a gear-rack transmission pair 9, a spring floating mechanism 10, a cam clamp 11, a pneumatic side positioning mechanism 12, a T-shaped sliding table 13, a carrier roller assembly 14, a conveying platform guide rail 15, a frame 16, a conveying platform motor 17, a speed reducer 18, a welding transformer 19, a positive electrode conductive plate 20, a negative electrode conductive plate 21, a diced bean positive electrode soft conductor 22, a diced bean positive electrode base 23, a diced bean positive electrode soft conductor 24, a diced bean positive electrode base 25, a diced bean negative electrode soft conductor 26, a diced bean negative electrode base 27, a diced bean negative electrode soft conductor 28, a diced bean negative electrode base 29, a diced bean positive electrode holding rod 30, a diced bean positive electrode flat electrode 31, a diced bean ceramic positioning sleeve 32, a diced bean negative electrode ball electrode 33, a diced bean negative electrode holding rod 34, a diced bean positive electrode holding rod 35, a diced bean positive electrode holding rod 36, a diced bean negative electrode flat electrode 37, a diced bean negative electrode sliding base 31, a diced bean piston holder 40, a diced bean lead screw holder mounting plate 40, a cam pin mounting plate 40, a double-type cylinder base mounting plate 40, a cam pin mounting plate 40, a double-type cylinder base 40, a cam lead screw cylinder base mounting plate 40, a double-type cylinder base 40, a cam lead screw cylinder base 40, a double-screw cylinder base 40, a cam lead screw cylinder base 40, a double-type screw cylinder base mounting plate mounting.

Detailed Description

The utility model discloses constitute by equipment body 2, preceding conveying platform 1, back conveying platform 4, many sets of welding set 3, transverse feed loading system 5.

Fig. 10 shows that the equipment body 2 is assembled into a gantry frame structure by a base 8, a cross beam 6 and two upright posts 7.

Fig. 1, 2 and 3 show that a front conveying platform 1 and a rear conveying platform 4 are symmetrically arranged on the front side and the rear side of an equipment body 2, a plurality of sets of welding devices 3 are sequentially arranged along the length direction of a cross beam 6 of the equipment body 2, the plurality of sets of welding devices 3 are fixed between a base 8 and the cross beam 6 of the equipment body 2, a transverse feeding pressurizing mechanism 5 is fixed on the base 8 and the cross beam 6 of the equipment body 2, and the transverse feeding pressurizing mechanism 5 is connected with the plurality of sets of welding devices 3.

Fig. 4 and 5 show that the front conveying platform 1 and the rear conveying platform 4 are identical in structure. The front conveying platform 1 and the rear conveying platform 4 are respectively composed of a frame 16, a conveying platform motor 17, a speed reducer 18, a speed reducer mounting seat 46, a conveying platform guide rail 15, a gear rack transmission pair 9, a carrier roller assembly 14, two sets of pneumatic side positioning mechanisms 12, a spring floating mechanism 10, a cam clamp 11 and a T-shaped sliding table 13.

The frame 16 is a steel cuboid frame, the conveying platform motor 17 is connected with the speed reducer 18, the conveying platform motor 17 and the speed reducer 18 are arranged at the lower part of the speed reducer mounting seat 46, the speed reducer mounting seat 46 is arranged at the lower part of the spring floating mechanism 10, the spring floating mechanism 10 is arranged at the upper plane of the sliding block of the conveying platform guide rail 15, the conveying platform guide rail 15 is arranged at the upper plane of the frame 16, the speed reducer 18 is connected with the gear of the gear-rack transmission pair 9, the gear is meshed with the rack, the rack is arranged at the upper plane of the frame 16, the carrier roller assembly 14 and the T-shaped sliding table 13 are arranged at the upper plane of the frame 16 by screws, two sets of pneumatic side positioning mechanisms 12 are arranged in the T-shaped slideway of the T-shaped sliding table 13 by T-shaped nuts, the cam clamp 11 is arranged at the lower plane of the cam clamp mounting, the cam clamp 11 is opposite and clamped to the heat exchanger plate.

Fig. 6 shows that the spring floating mechanism is composed of a cam clamp mounting base 53, two guiding copper sleeves 54, four springs 55, two spring pin shafts 56 and a lower base plate base 57. The lower base plate 57 is a structural member formed by welding plate materials, one end of the lower base plate 57 is provided with a C-shaped opening, the other end of the lower base plate 57 is a flat plate, the guide copper sleeve 54 is embedded into the cam clamp mounting base 53, the spring pin shaft 56 sequentially penetrates through the upper part of the C-shaped opening of the lower base plate 57, the spring 55, the guide copper sleeve 54 and the lower part of the C-shaped opening, the cam clamp mounting base 53 and the C-shaped opening of the lower base plate 57 are in transition through the spring 55, and the cam clamp mounting base 53 can float up and down along the spring pin shaft 56 through the guide copper sleeve 54 under the action of the spring 55 to compensate workpieces.

Fig. 7 shows that the cam pliers 11 is composed of a handle 47, an end cam 48, a cam pin 49, an upper press plate 50, a press plate pin 51, and a lower press plate 52. The handle 47 is connected to the end cam 48 through a thread, the end cam 48 is fixed on the lower pressing plate 52 through a cam pin 49, and the end cam 48 is in rotating fit with the cam pin 49. The upper pressing plate 50 and the lower pressing plate 52 form a hinge mechanism through a pressing plate pin shaft 51, the lower pressing plate 52 is fixed, one end of the upper pressing plate 50 is lapped on the upper surface of the end face cam 48, one end, lapped with the end face cam 48, of the upper pressing plate 50 moves up and down along with the rotation of the end face cam 48, the other end of the upper pressing plate 50 is pressed on the lower pressing plate 52 by taking the pressing plate pin shaft 51 as the center, and the heat exchanger plate is clamped between the upper pressing plate 50 and the lower pressing plate 52. An operator pulls the handle 47 to drive the end face cam 48 to rotate around the cam pin shaft 49, one end of the upper pressing plate 50, which is overlapped with the end face cam 48, moves up and down along with the rotation of the end face cam 48, and the other end of the upper pressing plate 50 presses the lower pressing plate 52 around the pressing plate pin shaft 51, so that the heat exchanger plate is fastened.

Fig. 8 and 9 show that the pneumatic side positioning mechanism is composed of an air cylinder mounting plate 58, an L-shaped bracket 59, a positioning block 60 and an air cylinder 61, the positioning block 60 is mounted at the top end of an air cylinder rod of the air cylinder 61 through screws, the air cylinder 61 is mounted on the air cylinder mounting plate 58 through screws, the air cylinder mounting plate 58 is connected with the L-shaped bracket 59 through screws, the L-shaped bracket 59 is fixed on the upper plane of the T-shaped sliding table 13 through T-shaped nuts, the L-shaped bracket 59 can be fixed at any position along the T-shaped sliding table due to the fact that the T-shaped sliding table 13 is provided with the T-shaped sliding way, heat exchanger plate sheets with different widths H can be met, and the positioning.

Fig. 3 shows that 10 sets of welding devices 3 are provided, each set of welding device 3 is provided with a bean welding loop and a cover surface welding loop, and the bean welding loop and the cover surface welding loop share one welding transformer 19, one positive conductive plate 20 and one negative conductive plate 21.

Fig. 11, 12, 13 and 14 show that the diced bean welding circuit also comprises a diced bean positive electrode soft conductor 22, a diced bean positive electrode holder 23, a diced bean positive electrode holding rod 30, a diced bean positive electrode flat electrode 31, a diced bean ceramic positioning sleeve 32, a diced bean negative electrode ball electrode 33, a diced bean negative electrode holding rod 34, a diced bean negative electrode holder 27 and a diced bean negative electrode soft conductor 26. The bean curd jelly ceramic locating sleeve 32 is installed at the lower end of a bean curd jelly positive electrode flat electrode 31, the bean curd jelly positive electrode flat electrode 31 is installed at the lower end of a bean curd jelly positive electrode holding rod 30, the bean curd jelly positive electrode holding rod 30 is installed on a bean curd positive electrode holder 23, the bean curd positive electrode holder 23 is connected with one end of a bean curd positive electrode soft conductor 22, the other end of the bean curd positive electrode soft conductor 22 is installed on a positive electrode conducting plate 20, the positive electrode conducting plate 20 is installed at the positive electrode of a welding transformer 19, a bean curd negative electrode ball electrode 33 is installed at the upper end of the bean curd negative electrode holding rod 34, the bean curd negative electrode holding rod 34 is installed on a bean curd negative electrode holder 27, the bean curd negative electrode holder 27 is connected with one end of a bean curd negative electrode soft conductor 26, the other end of the bean curd negative electrode soft conductor 26 is installed on a negative electrode conducting plate 21, and the negative electrode conducting plate 21 is installed at the negative electrode.

Fig. 11, 12, 13, and 14 show that the cover welding circuit further includes a cover positive electrode soft conductor 24, a cover positive electrode holder 25, a cover positive electrode grip 35, a cover positive electrode ball electrode 36, a cover negative electrode flat electrode 37, a cover negative electrode grip 38, a cover negative electrode holder 29, and a cover negative electrode soft conductor 28. The cover surface anode ball electrode 36 is arranged at the lower end of the cover surface anode electrode holding rod 35, the cover surface anode electrode holding rod 35 is arranged on the cover surface anode electrode seat 25, the cover surface anode electrode seat 25 is connected with one end of the cover surface anode soft conductor 24, the other end of the cover surface anode soft conductor 24 is arranged on the anode conductive plate 20, the anode conductive plate 20 is arranged at the anode of the welding transformer 19, the cover surface cathode flat electrode 37 is arranged at the upper end of the cover surface cathode electrode holding rod 38, the cover surface cathode electrode holding rod 38 is arranged on the cover surface cathode electrode seat 29, the cover surface cathode electrode seat 29 is connected with one end of the cover surface cathode soft conductor 28, the other end of the cover surface cathode soft conductor 28 is arranged on the cathode conductive plate 21, and the cathode conductive plate 21 is arranged at the cathode of the welding transformer 19, so that a complete cover surface welding loop is formed.

Fig. 12, 13, 15, 16 and 17 show that the transverse feeding and pressurizing mechanism 5 comprises two sets of servo feeding mechanisms, 10 sets of upper pneumatic pressurizing devices and 10 sets of lower pneumatic pressurizing devices. Each set of servo feeding mechanism consists of a feeding motor 42, a high-precision speed reducer 41, a ball screw 63, a screw nut 40, a feeding guide rail 43, a T-shaped sliding seat 44 and a T-shaped sliding seat connecting frame 62. The upper pneumatic pressure device and the lower pneumatic pressure device have the same structure and are composed of a double-force air cylinder mounting seat 45 and two double-force air cylinders 39, and the mounting structures are as follows: the double-force air cylinder mounting seat 45 is fixed on the surface of the T-shaped sliding seat 44 through a T-shaped nut, and the distance between two adjacent sets of pressurizing mechanisms can be adjusted along the T-shaped groove of the T-shaped sliding seat 44 according to the distance h between different pieces of diced beans. The T-shaped sliding seat 44 is connected with the screw nut 40 through the T-shaped sliding seat connecting frame 62, the screw nut 40 penetrates through the ball screw 63, the ball screw 63 is installed at the bottom of the base 8 and the cross beam 6 of the equipment body 2, the feeding guide rail 43 is installed on the upper plane of the base 8 and the cross beam 6 of the equipment body 2, the ball screw 63 is connected with the high-precision speed reducer 41, the high-precision speed reducer 41 is connected with the feeding motor 42, and the high-precision speed reducer 41 and the feeding motor 42 are installed at the bottom of the base 8 and the cross beam 6 of the equipment body 2. The ball screw 63 drives the T-shaped slider 44 to move transversely and precisely along the feeding rail 43.

Fig. 15, 16 and 17 show that two sets of servo feeding mechanisms are respectively arranged in the beam 6 and the base 8 of the equipment body 2, wherein the servo feeding mechanism arranged in the beam 6 is connected with 10 sets of upper pneumatic pressurizing devices, and the servo feeding mechanism arranged in the base 8 is connected with 10 sets of lower pneumatic pressurizing devices. A plurality of double-power cylinders 39 of 10 sets of upper pneumatic pressurizing devices and 10 sets of lower pneumatic pressurizing devices are respectively connected with the cover positive electrode seat 25, the cover negative electrode seat 29, the cover positive electrode holding rod 35, the cover negative electrode holding rod 38, the nut positive electrode seat 23, the nut negative electrode seat 27, the nut positive electrode holding rod 30 and the nut negative electrode holding rod 34, and the double-power cylinders 39 of the 10 sets of upper pneumatic pressurizing devices and the 10 sets of lower pneumatic pressurizing devices respectively correspond up and down to form 10 sets of electrode pressurizing mechanisms.

The working process of the utility model is as follows:

in the first step, the device is debugged to the best state before the device is formally used:

adjusting the front and rear conveying platforms, namely firstly adjusting the cam clamps 11 of the front conveying platform 1 and the rear conveying platform 4 in place by arranging a conveying platform motor 17 according to the length L of the workpiece, and secondly adjusting two sets of pneumatic side positioning devices in place along a T-shaped sliding plate 13 according to the width H of the workpiece;

adjustment of the infeed pressurization mechanism: according to the distance h between the beans, the distance between the adjacent electrodes is set to be integral multiple of the bean h by adjusting the position of the cylinder mounting seat 45 along the T-shaped sliding seat 44;

step two, welding the diced beans:

lower sheet upper part: the lower plate is hung on a carrier roller assembly 14 of the front conveying platform 1 by means of a lifting appliance such as a crown block and aligned with a cam clamp 11 of the front conveying platform 1, a cylinder 61 of a pneumatic clamping mechanism at one end of the front conveying platform 1 extends out to provide a positioning reference, a cylinder 61 of the pneumatic clamping mechanism at the other end positions a workpiece at a fixed position, and the cam clamps 11 of the front conveying platform 1 and the rear conveying platform 4 respectively clamp the workpiece;

welding the diced beans: manually clamping 10 diced beans into 10 diced bean ceramic positioning sleeves 32 respectively, pressing a start button, starting an automatic welding program, driving an electrode to rise to a welding position by a double-force cylinder 39 welded by the lower 10 diced beans (at the moment, an electrode tip just contacts a lower plate), pressurizing the double-force cylinder 39 welded by the upper 10 diced beans, carrying out power-on welding, and returning the upper cylinder and the lower cylinder to the original positions after the welding is finished; and (3) synchronously moving two feeding motors 42 of the transverse feeding pressurizing mechanism 5, transversely feeding the beans for a distance h, manually feeding the beans again, and performing second welding until the first row of beans are completely welded. And starting a feeding button of the conveying platform, enabling the front conveying platform 1 and the rear conveying platform 4 to act simultaneously, longitudinally stepping the workpiece by a bean curd distance h, repeating the action, completing welding of a second row of bean curd dices, and repeating the operation until the procedure of welding the bean curd dices is completed.

Thirdly, cover surface welding:

the upper piece of the upper plate is the same as the lower plate, the cam clamp 11 is required to simultaneously clamp the upper plate and the lower plate, the cylinder of the cover electrode needs to be automatically controlled by a program during welding to lift, cover welding is realized, and the welding sequence is also the same as that of bean dices until all spot welding is finished.

The utility model discloses an embodiment as follows:

the base 8 of the equipment body 2 has the length of 2700mm, the width of 300mm and the height of 350 mm;

the beam 6 of the apparatus body 2 has a length of 2700mm, a width of 300mm and a height of 450 mm;

the length of the upright post 7 of the equipment body 2 is 400mm, the width is 300mm, and the height is 1345 mm;

the length of the frame 16 of the front conveying platform 1 and the rear conveying platform 4 is 4135mm, the width is 1850mm, and the height is 1200 mm;

the model of the conveying platform motors 17 of the front conveying platform 1 and the rear conveying platform 4 is SGM7G-13AFC61, and the model of the speed reducer 18 is P L140-32P 2S2OP2-SGM7G-13AFC 61;

the model of the welding transformer 19 of the welding device 3 is PMFT 130-091;

the model of the feeding motor 42 of the transverse feeding pressurization mechanism 5 is HG-SR102J, the model of the high-precision speed reducer 41 is SP L-120-3-HG-SR 102J, and the model of the double-power air cylinder 39 is CY-80-63.

The heat exchanger plate is made of stainless steel, the length L of the heat exchanger plate is 2000-10000 mm, the width H of the heat exchanger plate is 350-1219 mm, the thickness T of the heat exchanger plate is 1.2-2 mm, the diameter d of the diced bean is 12, 14 and 16mm, and the height T of the diced bean is 8-14 mm.

Claims

1. The utility model provides a high efficiency heat exchanger slab multiple spot welding equipment which characterized in that: the automatic horizontal feeding device comprises an equipment body (2), a front conveying platform (1), a rear conveying platform (4), a plurality of sets of welding devices (3) and a horizontal feeding pressurizing mechanism (5), wherein the equipment body (2) is formed by a base (8), a cross beam (6) and two upright posts (7) in an assembled gantry frame structure, the front conveying platform (1) and the rear conveying platform (4) are symmetrically arranged in the front and at the rear two sides of the equipment body (2), the plurality of sets of welding devices (3) are sequentially arranged along the length direction of the cross beam (6) of the equipment body (2), the plurality of sets of welding devices (3) are fixed between the base (8) and the cross beam (6) of the equipment body (2), the horizontal feeding pressurizing mechanism (5) is fixed on the base (8) and the cross beam (6) of the equipment body (2), and the horizontal feeding pressurizing mechanism (5) is connected with the plurality of welding devices (.

2. The high efficiency heat exchanger plate multi-spot welding apparatus of claim 1, wherein: the front conveying platform (1) and the rear conveying platform (4) are identical in structure, the front conveying platform (1) and the rear conveying platform (4) are respectively composed of a rack (16), a conveying platform motor (17), a speed reducer (18), a speed reducer mounting seat (46), a gear rack transmission pair (9), a conveying platform guide rail (15), a carrier roller assembly (14), two sets of pneumatic side positioning mechanisms (12), a spring floating mechanism (10), a cam clamp (11) and a T-shaped sliding table (13), the rack (16) is a steel cuboid frame, the conveying platform motor (17) is connected with the speed reducer (18), the conveying platform motor (17) and the speed reducer (18) are mounted on the lower portion of the speed reducer mounting seat (46), the speed reducer mounting seat (46) is mounted on the lower portion of the spring floating mechanism (10), the spring floating mechanism (10) is mounted on the upper plane of a sliding block of the conveying platform guide rail (15), the conveying platform guide rail (15) is arranged on the upper plane of a frame of a rack (16), a speed reducer (18) is connected with a gear of a rack-and-pinion transmission pair (9), the gear of the rack-and-pinion transmission pair (9) is meshed with a rack, the rack is arranged on the upper plane of the frame of the rack (16), a carrier roller assembly (14) and a T-shaped sliding table (13) are arranged on the upper plane of the frame (16) through screws, two sets of pneumatic side positioning mechanisms (12) are arranged in a T-shaped slideway of the T-shaped sliding table (13) through T-shaped nuts, a cam clamp (11) is arranged on the lower plane of a cam clamp mounting seat (53) in a spring floating mechanism (10) through screws, a heat exchanger plate is placed on the carrier roller assembly (14), and the cam clamp (11) is opposite to and clamped.

3. The high efficiency heat exchanger plate multi-spot welding apparatus of claim 2, wherein: the spring floating mechanism (10) is composed of a cam clamp mounting seat (53), two guide copper sleeves (54), four springs (55), two spring pin shafts (56) and a lower base plate (57), wherein the lower base plate (57) is a structural member formed by welding plate materials, one end of the lower base plate is provided with a C-shaped opening, the other end of the lower base plate is a flat plate, the guide copper sleeves (54) are embedded into the cam clamp mounting seat (53), the spring pin shafts (56) sequentially penetrate through the upper portion of the C-shaped opening of the lower base plate (57), the springs (55), the guide copper sleeves (54), the springs (55) and the lower portion of the C-shaped opening, the cam clamp mounting seat (53) and the C-shaped opening of the lower base plate (57) are transited through the springs (55), and the cam clamp mounting seat (53) can float freely in the.

4. The high efficiency heat exchanger plate multi-spot welding apparatus of claim 3, wherein: the cam clamp (11) comprises a handle (47), an end face cam (48), a cam pin shaft (49), an upper pressing plate (50), a pressing plate pin shaft (51) and a lower pressing plate (52), wherein the handle (47) is connected to the end face cam (48) through threads, the end face cam (48) is fixed on the lower pressing plate (52) through the cam pin shaft (49), the end face cam (48) is in rotating fit with the cam pin shaft (49), the upper pressing plate (50) and the lower pressing plate (52) form a hinge mechanism through the pressing plate pin shaft (51), the lower pressing plate (52) is fixed, one end of the upper pressing plate (50) is lapped on the upper surface of the end face cam (48), one end, overlapped with the end face cam (48), of the upper pressing plate (50) moves up and down along with the rotation of the end face cam (48), the other end of the upper pressing plate (50) is pressed on the lower pressing plate (52) by taking the pressing plate, the heat exchanger plate is clamped between an upper pressure plate (50) and a lower pressure plate (52).

5. The high-efficiency heat exchanger plate multipoint welding equipment according to claim 2 is characterized in that the pneumatic side positioning mechanism (12) consists of a cylinder mounting plate (58), an L-shaped bracket (59), a positioning block (60) and a cylinder (61), wherein the positioning block (60) is mounted at the top end of a cylinder rod through a screw, the cylinder (61) is mounted on the cylinder mounting plate (58) through a screw, the cylinder mounting plate (58) is connected with a L-shaped bracket (59) through a screw, and a L-shaped bracket (59) is fixed on the upper plane of the T-shaped sliding table (13) through a T-shaped nut.

6. The high efficiency heat exchanger plate multi-spot welding apparatus of claim 1, wherein: the welding device (3) is internally provided with a cover surface welding loop, the cover surface welding loop is also provided with a cover surface anode soft conductor (24), a cover surface anode electrode seat (25), a cover surface anode electrode holding rod (35), a cover surface anode ball electrode (36), a cover surface cathode flat electrode (37), a cover surface cathode electrode holding rod (38), a cover surface cathode electrode seat (29) and a cover surface cathode soft conductor (28), the cover surface anode ball electrode (36) is arranged at the lower end of the cover surface anode electrode holding rod (35), the cover surface anode electrode holding rod (35) is arranged on the cover surface anode electrode seat (25), the cover surface anode electrode seat (25) is connected with one end of the cover surface anode soft conductor (24), the other end of the cover surface anode soft conductor (24) is arranged on an anode conductor plate (20), an anode conductor plate (20) is arranged at the anode of the welding transformer (19), the cover surface cathode flat electrode (37) is arranged at the upper end of the cover surface cathode electrode holding rod (38), the cover surface negative electrode holding rod (38) is installed on the cover surface negative electrode seat (29), the cover surface negative electrode seat (29) is connected with one end of the cover surface negative electrode soft conductor (28), the other end of the cover surface negative electrode soft conductor (28) is installed on the negative electrode conducting plate (21), the negative electrode conducting plate (21) is installed on the negative electrode of the welding transformer (19), and a complete cover surface welding loop is formed.

7. The high efficiency heat exchanger plate multi-spot welding apparatus of claim 1, wherein: the transverse feeding pressurizing mechanism (5) comprises two sets of servo feeding mechanisms, 10 sets of upper pneumatic pressurizing devices and 10 sets of lower pneumatic pressurizing devices, each set of servo feeding mechanism consists of a feeding motor (42), a high-precision speed reducer (41), a ball screw (63), a screw nut (40), a feeding guide rail (43), a T-shaped sliding seat (44) and a T-shaped sliding seat connecting frame (62), the upper pneumatic pressurizing devices and the lower pneumatic pressurizing devices are identical in structure and consist of a double-power air cylinder mounting seat (45) and two double-power air cylinders (39), and the mounting structures of the two double-power air cylinders are as follows: the double-power cylinder mounting seat (45) is fixed on the surface of a T-shaped sliding seat (44) through a T-shaped nut, the T-shaped sliding seat (44) is connected with a screw nut (40) through a T-shaped sliding seat connecting frame (62), the screw nut (40) penetrates through a ball screw (63), the ball screw (63) is mounted at the bottoms of a base (8) and a cross beam (6) of an equipment body (2), a feeding guide rail (43) is mounted on the upper planes of the base (8) and the cross beam (6) of the equipment body (2), the ball screw (63) is connected with a high-precision speed reducer (41), the high-precision speed reducer (41) is connected with a feeding motor (42), and the high-precision speed reducer (41) and the feeding motor (42) are mounted at the bottoms of the base (8) and the cross beam (6) of the equipment body (2).