CN207358374U - Improved laser tailor-welding equipment - Google Patents

Abstract

The utility model provides an improved laser tailor-welding device, which comprises a first welding device, a first pre-positioning platform, a first conveying device arranged at the middle position of the first pre-positioning platform and a second conveying device arranged at one side of the discharge end of the first conveying device; the second welding device is arranged on one side of the first welding device and is provided with a second pre-positioning platform, a third conveying device arranged in the middle of the second pre-positioning platform and a fourth conveying device arranged on one side of the discharge end of the third conveying device; a feeding arm device arranged on one side of the second welding device; therefore, the utility model discloses can accelerate the production beat by a wide margin and promote production efficiency, and can adjust easily or switch production modes such as two pieces together formula and three pieces together formula to improve the elasticity of production scheduling, and then can improve the practicality of product by a wide margin.

Description

Improved Tailored Laser Welding Equipment

technical field

The utility model relates to a welding device, in particular to a laser tailor welding device.

Background technique

Tailored laser welding technology is widely used in automobile manufacturing and other industrial fields. It can combine and weld plates of the same or different sizes, thicknesses or materials such as steel plates into a single plate for subsequent processing. Compared with traditional welding processes , The laser tailor welding process can bring many obvious advantages to automobile manufacturing, such as reducing the weight of the car body, simplifying assembly steps, improving assembly accuracy and reducing manufacturing costs, etc. Chinese patent announcement number CN204381660U discloses an existing laser tailor welding equipment, which is through four robotic arms, a conveying mechanism and two sets of welding equipment connected to the time-sharing and splitting lasers to jointly realize a robot before and after feeding. Connect small tailor welding machines to improve laser utilization and production efficiency.

However, there are still many points to be improved in the aforementioned existing tailor-made laser welding equipment: First, it does not have the function of automatic inspection of the workpiece weld bead, so the weld bead inspection after welding can only be carried out manually, which is easy to make the quality inspection work It becomes the bottleneck of the entire production process, which has a negative impact on production efficiency; secondly, it only has a single feeding platform for loading materials. When the workpieces on the feeding platform are taken out, the waiting time for reloading will also increase Slow down the overall production cycle; in addition, the existing laser tailor welding equipment must use four robotic arms, resulting in increased manufacturing costs of the equipment.

Therefore, how to improve the above-mentioned deficiency is the technical difficulty that the designer of the utility model in this case wants to solve.

Utility model content

In view of the above shortcomings of the existing conveying device, the purpose of this utility model is to develop a laser tailor welding equipment that can improve production efficiency and reduce costs.

In order to achieve the above objectives, the utility model provides an improved tailoring laser welding equipment, which includes: a first welding device, a first pre-positioning platform, a middle position of the first pre-positioning platform The first conveying device and a second conveying device arranged on one side of the discharge end of the first conveying device, the two sides of one end of the first pre-positioning platform are respectively provided with a first loading pallet, the first pre-positioning A second loading pallet is provided on both sides of the other end of the platform, a first welding machine is provided above the first conveying device, a first weld bead inspection machine is provided above the second conveying device, and the second conveying device is far away from Both sides of one end of the first conveying device are respectively provided with a first discharge conveying platform and a second discharge conveying platform, and one side of the first discharging conveying platform is provided with two first unloading pallets, and the second One side of the discharge conveying platform is provided with two second unloading pallets; a second welding device is arranged on one side of the first welding device, and the second welding device is provided with a second pre-positioning platform and a The third conveying device at the middle position of the second pre-positioning platform and a fourth conveying device located on the discharge end side of the third conveying device, the two sides of one end of the second pre-positioning platform are respectively provided with a third upper A material pallet, a fourth feeding pallet is respectively provided on both sides of the other end of the second pre-positioning platform, a second welding machine is provided above the third conveying device, and a second welding bead is provided above the fourth conveying device Inspection machine; a material-feeding arm device, arranged on one side of the second welding device, and the second welding device is located between the first welding device and the material-discharging arm device.

Wherein, a first turning machine is arranged above the second conveying device, and the first weld bead inspection machine is located between the first welding machine and the first turning machine.

Wherein, a second turning machine is arranged above the fourth conveying device, and the second weld bead inspection machine is located between the second welding machine and the second turning machine.

Wherein, the first pre-positioning platform is respectively provided with a first pre-positioning mechanism and a second pre-positioning mechanism near the two ends, and the second pre-positioning platform is respectively provided with a third pre-positioning mechanism near the two ends. mechanism and a fourth pre-positioning mechanism.

Wherein, the unloading arm device is provided with a mechanical arm, at least one good product unloading pallet and at least one defective product unloading pallet, and the mechanical arm is arranged on one side of the fourth conveying device of the second welding device, each of the good product The unloading pallet and each of the defective product unloading pallets are respectively arranged around the mechanical arm.

Wherein, the first welding device is provided with a first horizontal feeding device, a first vertical feeding device, a second horizontal feeding device and a second vertical feeding device, and the first horizontal feeding device can be used in each Horizontally and vertically shift between the first loading pallet and the first pre-positioning platform, the first longitudinal pick-up device can be horizontally and vertically shifted on the first pre-positioning platform, and the second transverse pick-up The material device can be displaced horizontally and vertically between each second loading pallet and the first pre-positioning platform, and the second longitudinal unloading device can be displaced horizontally and vertically on the first pre-positioning platform.

Wherein, the first welding device is provided with a third vertical feeding device, a third horizontal feeding device, a fourth vertical feeding device and a fourth horizontal feeding device, and the third vertical feeding device can Horizontally and vertically shift between the second conveying device and the first discharge conveying platform, and the third horizontal reclaiming device can perform horizontal and vertical displacement between the first discharge conveying platform and each of the first unloading pallets vertical displacement, the fourth vertical reclaiming device can be horizontally and vertically displaced between the second conveying device and the second discharge conveying platform, and the fourth horizontal reclaiming device can be moved between the second discharge conveying platform Carry out horizontal and vertical displacement with each of the second unloading pallets.

In this way, the utility model can greatly speed up the production tempo and improve the production efficiency, and can easily adjust or switch the production modes such as two-part and three-part, so as to improve the flexibility of production scheduling and greatly improve the practicability of the product.

Description of drawings

Fig. 1 is a schematic structural view of an embodiment of the utility model.

Fig. 2 is a schematic diagram of an action of performing two-piece welding mode according to an embodiment of the present invention.

Fig. 3 is a schematic diagram of an action of a three-piece welding mode according to an embodiment of the present invention.

Fig. 4 is a schematic diagram of another three-piece welding mode according to an embodiment of the present invention.

Explanation of reference signs: 1-the first welding device; 11-the first pre-positioning platform; 12-the first pre-positioning mechanism; 13-the second pre-positioning mechanism; 14-the first loading pallet; 15-the second upper Material pallet; 16-the first horizontal reclaiming device; 17-the first vertical reclaiming device; 18-the second horizontal reclaiming device; 19-the second vertical reclaiming device; 2-the second welding device; 21-the first Two pre-positioning platforms; 22-the third pre-positioning mechanism; 23-the fourth pre-positioning mechanism; 24-the third loading pallet; 25-the fourth loading pallet; 26-the fifth horizontal reclaiming device; 27- Fifth vertical reclaiming device; 28- sixth horizontal reclaiming device; 29- sixth vertical reclaiming device; 3- unloading arm device; 31- mechanical arm; 32- good product unloading pallet; Material pallet; 41-first conveying device; 42-second conveying device; 43-first inspection and reclaiming device; 44-first welding machine; 45-first weld bead inspection machine; 46-first turning machine ; 47-the first discharge conveyor platform; 48-the second discharge conveyor platform; 49-the first blanking pallet; 50-the second blanking pallet; 51-the third vertical reclaiming device; 52-the third Horizontal reclaiming device; 53-fourth vertical reclaiming device; 54-fourth horizontal reclaiming device; 61-third conveying device; 62-fourth conveying device; 63-second inspection reclaiming device; 64-second Welding machine; 65-second weld bead inspection machine; 66-second turning machine; 70-tailored welding finished product; 70a-tailored welding finished product; 70b-tailored welding finished product; 71-No. 73-Workpiece No. 3.

Detailed ways

Please refer to FIG. 1 , which is a structural schematic diagram of an embodiment of the tailor laser welding equipment of the present invention. The tailor laser welding equipment includes a first welding device 1 , a second welding device 2 and a feeding arm device 3 ,in:

This first welding device 1 is provided with a first pre-positioning platform 11, and this first pre-positioning platform 11 is respectively provided with a first pre-positioning mechanism 12 and a second pre-positioning mechanism 13 on the position close to two ends, in order to provide The workpiece or the workpiece is used as a reference point (line) for pre-positioning. The first pre-positioning mechanism 12 and a second pre-positioning mechanism 13 can be L-shaped positioning frames. More specifically, each of the pre-positioning mechanisms can be fixed. set on the first pre-positioning platform 11, or, the pre-positioning mechanisms can also be designed to movably protrude from the first pre-positioning platform 11, and one end of the first pre-positioning platform 11 A first loading pallet 14 is respectively provided on both sides of the first pre-positioning platform 11, and a second loading pallet 15 is also respectively provided on both sides of the other end of the first pre-positioning platform 11. The first welding device 1 is provided with a first horizontally Material device 16, a first vertical feeding device 17, a second horizontal feeding device 18 and a second vertical feeding device 19, wherein, the first horizontal feeding device 16 can be placed on each of the first loading stacks Horizontally and vertically shift between the plate 14 and the first pre-positioning platform 11 and take and place workpieces. Put the workpiece, the second horizontal pick-up device 18 can move horizontally and vertically between each of the second loading pallet 15 and the first pre-positioning platform 11 and take and put the workpiece, the second vertical pick-up device 19 can perform horizontal and vertical displacement on the first pre-positioning platform 11 and take and place workpieces. Each of the material taking devices can be a vacuum suction nozzle. In addition, each part of the utility model is used to realize activities or displacement Necessary power mechanisms or transmission mechanisms such as motors, XZ biaxial mechanisms, YZ biaxial mechanisms, and detailed connection and assembly relationships are conventional technical means in the field and are not the point of the invention of this case, and will not be repeated here.

In addition, the first welding device 1 is provided with a first conveying device 41, a second conveying device 42 arranged on the discharge end side of the first conveying device 41, and a The first inspection and retrieving device 43 for horizontally and vertically shifting and taking and placing workpieces between the two conveying devices 42, the first conveying device 41 is arranged at the middle position of the first pre-positioning platform 11, and the first conveying The conveying direction of the device 41 is perpendicular to the first pre-positioning platform 11, a first welding machine 44 is arranged above the first conveying device 41, and a first weld seam inspector (weld seam inspector) is arranged above the second conveying device 42. ) 45 and a first turning machine 46, it can be mentioned that the first turning machine 46 can be selectively set according to user or production requirements, it can be used to turn over the workpiece after tailor welding, In order to facilitate the subsequent processing of the workpiece such as stamping, wherein, when the first turning machine 46 is provided, the first weld bead inspection machine 45 is located between the first welding machine 44 and the first turning machine 46 A first discharge conveying platform 47 and a second discharge conveying platform 48 are respectively provided on both sides of the second conveying device 42 away from the end of the first conveying device 41, and one side of the first discharging conveying platform 47 is provided with Two first blanking pallets 49, two second blanking pallets 50 are also provided on one side of the second discharge conveying platform 48, and the first welding device 1 is provided with a third longitudinal feeding device 51, a The third horizontal feeding device 52, a fourth vertical feeding device 53 and a fourth horizontal feeding device 54, wherein the third vertical feeding device 51 can be transported between the second conveying device 42 and the first discharge Horizontally and vertically shift between the platforms 47 and take and place (after tailor welding) workpieces, the third horizontal pick-up device 52 can be used between the first discharging conveying platform 47 and each of the first unloading pallets 49 between the horizontal and vertical displacement and take, place the workpiece, the fourth longitudinal pick-up device 53 can be horizontal and vertical displacement between the second conveying device 42 and the second discharge conveyor 48 and take, For placing workpieces, the fourth horizontal pick-up device 54 can move horizontally and vertically between the second discharge conveying platform 48 and each of the second unloading pallets 50 to take and place workpieces.

The second welding device 2 is arranged on one side of the first welding device 1, and the second welding device 2 is provided with a second pre-positioning platform 21, and the second pre-positioning platform 21 is respectively provided with a third Pre-positioning mechanism 22 and a 4th pre-positioning mechanism 23, the both sides of this second pre-positioning platform 21 one end are respectively provided with a 3rd loading pallet 24, the both sides of this second pre-positioning platform 21 other ends are also respectively provided with There is a fourth loading pallet 25, the second welding device 2 is provided with a fifth horizontal take-off device 26 and a fifth vertical take-off device 27, and the second welding device 2 is also provided with a sixth horizontal take-off device 28 and a sixth vertical reclaiming device 29, wherein the fifth horizontal reclaiming device 26 can be horizontally and vertically shifted between each of the third loading pallet 24 and the second pre-positioning platform 21 and take, Put the workpiece, the fifth vertical pick-up device 27 can be horizontally and vertically shifted on the second pre-positioning platform 21 and take and put the workpiece, the sixth horizontal pick-up device 28 can be placed on each of the fourth loading stacks Horizontally and vertically shift between the plate 25 and the second pre-positioning platform 21 and take and place workpieces. Put workpiece, in addition, this second welding device 2 is provided with a 3rd conveying device 61, a 4th conveying device 62 that is arranged on the discharge end side of this 3rd conveying device 61 and a can on this 3rd conveying device 61 and the second inspection and retrieving device 63 for horizontally and vertically shifting and taking and placing workpieces between the fourth conveying device 62, the third conveying device 61 is arranged at the middle position of the second pre-positioning platform 21, and the The conveying direction of the third conveying device 61 is perpendicular to the second pre-positioning platform 21, a second welding machine 64 is arranged above the third conveying device 61, and a second weld bead inspection machine 65 is arranged above the fourth conveying device 62 Like a second overturning machine 66, the second overturning machine 66 is also a part that can be selectively installed, and when the second overturning machine 66 is provided, the second weld bead inspection machine 65 is located at the first Between the second welding machine 64 and the second turning machine 66, so far, the configuration of each component of the second welding device 2 can be said to be the same as the configuration of each corresponding component in the first welding device 1, In addition, it can be mentioned that both the first welding machine 44 of the first welding device 1 and the second welding machine 64 of the second welding device 2 can actually be connected to the same time-division and beam-splitting laser (not shown in the figure) The lasers are connected to each other, and the lasers are used in turn by time-sharing welding, so that the utilization rate of the lasers can be effectively improved. In addition, the structures and action principles of the above-mentioned welding machines, weld bead inspection machines and turning machines and other components belong to the technical field The prior art well known to personnel, so will not be described in detail here.

The blanking arm device 3 is arranged on one side of the second welding device 2, and the second welding device 2 is located between the first welding device 1 and the blanking arm device 3, and the blanking arm device 3 is provided with a mechanical Arm 31, at least one good product blanking pallet 32 and at least one defective product blanking pallet 33, wherein the mechanical arm 31 is arranged on one side of the fourth conveying device 62 of the second welding device 2, each of the good product blanking The pallet 32 and each defective product unloading pallet 33 can be arranged around the robot arm 31 respectively, and the robot arm 31 can take the workpieces that have been tailor-welded by the second welding device 2 from the fourth conveying device 62 Next, and according to the results of the weld bead inspection, the workpieces are respectively placed and stacked on each of the good product blanking pallets 32 or each of the defective product blanking pallets 33.

The working principle of the present utility model is explained below: Please refer to Fig. 1 and Fig. 2, which discloses the action process of the present utility model implemented in the two-piece welding mode (that is, two different workpieces are welded together), in order to explain For convenience, here we mainly take the first welding device 1 as an example to illustrate the detailed working principle. First, the materials to be processed, that is, two different workpieces, are stacked on each of the first loading pallets 14 and each of the first loading pallets 14 and each On the second loading pallet 15 (hereinafter these two kinds of workpieces are respectively referred to as No. 1 workpiece 71 and No. 2 workpiece 72), and then, the first transverse pick-up device 16 can be positioned on the first loading pallet. No. 1 workpiece 71 on 14 is taken and placed on the first pre-positioning platform 11 one by one, and the first pre-positioning mechanism 12 is used to pre-position the No. 1 workpiece 71. The first longitudinal pick-up device 17 can then The No. 1 workpiece 71 that has been pre-positioned is picked and placed on the first conveying device 41. At the same time, the second horizontal pick-up device 18 and the second longitudinal pick-up device 19 can also take the No. 2 workpiece 72 according to the same action principle. Take and place on the first conveying device 41, and make the No. 1 workpiece 71 and the No. 2 workpiece 72 abut against each other side by side. Next, the first conveying device 41 can place the No. 1 workpiece 71 that is close together. The No. 2 workpiece 72 is conveyed and the laser tailor welding operation is performed by the first welding machine 44. In this way, the No. 1 workpiece 71 and the No. 2 workpiece 72 can complete tailor welding and combine to form a tailor-welded finished product 70 of a single sheet. Next, the first inspection and retrieving device 43 can take and place the tailor-welded finished product 70 from the first conveying device 41 to the second conveying device 42, and the second conveying device 42 can convey and pass the tailor-welded finished product 70 The first weld bead inspection machine 45 is used to perform weld bead inspection to judge whether the tailor-welded finished product 70 is good or defective. Next, according to actual needs, the tailor-welded finished product 70 can pass through the first turning machine 46 Carry out the turning operation, and then, the third vertical pick-up device 51 and the fourth vertical pick-up device 53 can take and place the tailor-welded finished products 70 belonging to good or defective products to the first discharge conveyor 47 respectively Or this second discharge conveyor platform 48 (for example, good product is put into this first discharge conveyor platform 47, and defective product is then put into this second discharge conveyor platform 48), then, this 3rd laterally takes The material device 52 and the fourth horizontal retrieving device 54 can take, place and stack the tailor-welded finished products 70 on the first discharge conveying platform 47 and the second discharge conveying platform 48 to the first unloading stacks respectively. On the plate 49 and each of the second blanking pallets 50, each blanking pallet full of tailor-welded finished products 70 can be pushed away by a forklift. As far as the second welding device 2 is concerned, its operating principle is the same as that of the first welding device 1, so it will not be repeated here. And after necessary operations such as flipping, the robotic arm 31 of the unloading arm device 3 takes and stacks each tailor-welded finished product 70 from the fourth conveying device 62 to each good product unloading pallet 32 or each defective product Unloading stack plate 33 on top.

Please refer to Fig. 3 and shown in Fig. 4 again, the utility model also can be applied to the production pattern of three-piece type welding (being about to three kinds of different workpieces are welded together), wherein, according to the third kind of workpiece (hereinafter referred to as three No. workpiece 73) in the final product, or in other words, according to whether the No. 1 workpiece 71 or No. 2 workpiece 72 is directly tailor-welded with the No. 3 workpiece 73, this three-piece welding mode can be further distinguished As shown in Figure 3 or Figure 4, the core action principles of these two variants are the same, so the No. 3 workpiece 73 is welded on the top of the final product (or directly connected to a No. workpiece 71 tailor welding combination) that is, Fig. 3 is used as an example to illustrate: in the three-piece welding mode, the action performed by the first welding device 1 is the same as that of the aforementioned two-piece welding mode, that is, it is used to combine a No. workpiece 71 and No. 2 workpiece 72 are tailor-welded to form the tailor-welded finished product 70, which will not be repeated here, but the second welding device 2 is used for the tailor-welded finished product completed by the first welding device 1 at this time. 70 and the No. 3 workpiece 73 carry out the tailor welding operation for the second time. At this time, because the No. 3 workpiece 73 will be positioned above the final product, when feeding, the No. 3 workpiece 73 as the material can be stacked on the On each of the third loading pallets 24, in this way, the first discharge conveying platform 47 and each of the first unloading pallets 49 on one side of the third loading pallets 24 can be designed to place Pile up the tailor-welded finished products 70 that are defective products (and these defective tailor-welded finished products 70 will not be used in the subsequent three-piece operation), on the contrary, the tailor-welded finished products 70 that are good products can be placed in the second discharge At this time, it is worth mentioning that the utility model does not need to place and stack the tailor-welded finished products 70 on the second discharge conveying platform 48 on each of the second blanking pallets 50 , and these tailor-welded finished products 70 can be directly taken and placed on the second pre-positioning platform 21 through the sixth horizontal pick-up device 28, and then, the second tailor-welded device 2 can complete the The tailor-welded finished product 70 and the third workpiece 73 can finally obtain a three-piece tailor-welded finished product 70a with the third workpiece 73 on top. So far, the complete action flow of the three-piece welding mode is completed. As for the one shown in Figure 4, it is the action process in which the No. 3 workpiece 73 is welded under the final product (or directly combined with the No. 2 workpiece 72 by tailor welding), and the difference from Fig. 3 is only the No. 3 workpiece The positions of 73 and the good welded finished product 70 are reversed, and finally a three-piece tailor-welded finished product 70b with the third workpiece 73 located below can be obtained, and the details will not be repeated here. It can be mentioned that in the above-mentioned three-piece welding mode, the utility model can save the blanking and re-loading procedures for the tailor-welded finished product 70, thereby achieving better production efficiency.

Compared with the existing laser tailor welding equipment, the utility model is equipped with an automatic weld bead inspection machine, and there are two sets of loading and unloading pallets, which can greatly speed up the production cycle and improve production efficiency, and can easily Adjust or switch the production modes such as double split and triple split to improve the flexibility of production scheduling. In addition, the utility model only needs to use one mechanical arm, which can also save costs.

Claims (7)

1. a kind of modified form laser welding equipment, it is characterized in that comprising：

One first welder, the of the centre position of the first predetermined bit platform is arranged on equipped with one first predetermined bit platform, one One conveying device and one be arranged on first conveying device discharge end side the second conveying device, the first predetermined bit platform The both sides of one end are respectively equipped with one first feeding pallet, and the both sides of the first predetermined bit platform other end are respectively equipped with one second Expect pallet, one first bonding machine is equipped with above first conveying device, being equipped with one first welding bead above second conveying device examines Machine is looked into, one end both sides of second conveying device away from first conveying device are respectively equipped with one first discharging transport platform and one Second discharging transport platform, the first discharging transport platform side are equipped with two the first blanking pallets, the second discharging transport platform side Equipped with two the second blanking pallets；

One second welder, is arranged at the first welder side, it is flat which is equipped with one second pre-determined bit Platform, one are arranged on going out for the 3rd conveying device arranged on the 3rd conveying device in the centre position of the second predetermined bit platform and one Expect the 4th conveying device of end side, the both sides of the second predetermined bit platform one end are respectively equipped with one the 3rd feeding pallet, this The both sides of the two predetermined bit platform other ends are respectively equipped with one the 4th feeding pallet, and one second weldering is equipped with above the 3rd conveying device Pick, one second welding bead check machine is equipped with above the 4th conveying device；

One blanking arm apparatus, is arranged at the second welder side, and second welder is located at the first welding dress Put between the blanking arm apparatus.

2. modified form laser welding equipment according to claim 1, it is characterised in that：It is equipped with above second conveying device One first turnover machine, and the first welding bead check machine is located between first bonding machine and first turnover machine.

3. modified form laser welding equipment according to claim 1, it is characterised in that：It is equipped with above 4th conveying device One second turnover machine, and the second welding bead check machine is located between second bonding machine and second turnover machine.

4. modified form laser welding equipment according to claim 1, it is characterised in that：The first predetermined bit platform is in close Be respectively equipped with one first pre-locating mechanism and one second pre-locating mechanism on the position at both ends, and the second predetermined bit platform by One the 3rd pre-locating mechanism and one the 4th pre-locating mechanism are respectively equipped with the position of two close end.

5. modified form laser welding equipment according to claim 1, it is characterised in that：The blanking arm apparatus is equipped with a machine Tool arm, at least one non-defective unit blanking pallet and at least one defective products blanking pallet, the mechanical arm be arranged at this second 4th conveying device side of welder, respectively the non-defective unit blanking pallet be respectively arranged at the machine with each defective products blanking pallet Around tool arm.

6. modified form laser welding equipment according to claim 1, it is characterised in that：First welder is equipped with one the One horizontal feeding device, a first longitudinal direction feeding device, one second horizontal feeding device and a second longitudinal direction feeding device, this One horizontal feeding device can respectively carry out horizontal and vertical displacement between the first feeding pallet and the first predetermined bit platform, should First longitudinal direction feeding device can carry out horizontal and vertical displacement on the first predetermined bit platform, the second horizontal feeding device Horizontal and vertical displacement, second longitudinal direction feeding dress can be respectively being carried out between the second feeding pallet and the first predetermined bit platform Horizontal and vertical displacement can be carried out on the first predetermined bit platform by putting.

7. modified form laser welding equipment according to claim 1, it is characterised in that：First welder is equipped with one the Three longitudinal feeding devices, one the 3rd horizontal feeding device, one the 4th longitudinal feeding device and one the 4th horizontal feeding device, this Three longitudinal feeding devices can carry out horizontal and vertical displacement between second conveying device and the first discharging transport platform, this Three horizontal feeding devices can respectively carry out in the first discharging transport platform and between the first blanking pallet horizontal and vertical displacement, 4th longitudinal feeding device can carry out horizontal and vertical displacement between second conveying device and the second discharging transport platform, 4th horizontal feeding device can carry out horizontal and vertical in the second discharging transport platform and respectively between the second blanking pallet Displacement.