DE102010051789A1 - Production ring with an upgrade line and a wedding strand - Google Patents

Abstract

A production ring for the pre-assembly of vehicles is described. The production ring has an upgrade line. The upgrade line has mounting brackets, each with a front and a rear mounting plate unit. Vehicle components of a vehicle chassis can be positioned on the mounting plate units. In addition, the production ring has a wedding strand, in which a connection of the vehicle chassis to the vehicle body is provided on the mounting brackets. A plate logistics position is arranged between the wedding line and the upgrade line, in which front and rear mounting plate units can be mounted on the mounting stands. Each assembly stand has an electrically operated self-propelled chassis.

Description

A production ring for assembling vehicles is described. The production ring has an upgrade line. The Aufrüststrang has mounting brackets, each with a front and a rear mounting plate unit. Vehicle components of a vehicle chassis can be positioned on the mounting plate units. In addition, the production ring on a wedding strand, in which on the mounting brackets connecting the vehicle chassis is provided with the vehicle body.

From the publication DE 195 23 294 A1 For this purpose, a system for joining the chassis units with the body of a vehicle is known. In this case, an exact positioning of the chassis units on the body is achieved automatically by auxiliary devices. The body is guided along an assembly line on an overhead conveyor at a constant speed. Below the overhead conveyor, the chassis units are guided on a body or mounting block, which carries the aggregates to be joined with a longitudinal side over an assembly distance of an engaging oval band at the same speed as the overhead conveyor. As a result, the body is lowered onto the chassis and bolted together.

Thereafter, the building blocks or mounting blocks are shipped from the assembly line in a return loop of the oval belt. The oval band thus determines the flow operation and the processing of the mounting blocks in the production ring. The mounting brackets are prepared for a limited number of model variants and are guided in a circle due to the oval belt and thus can only accommodate further model variants when the blocks of a production ring are replaced. Thus, the flexibility of the tied to the oval band production is extremely limited.

The object of the invention is to provide a production ring, which has an upgrade line and a wedding strand and allows a much greater flexibility and rapid adaptation of the mounting brackets to a wide variety of vehicle models.

This object is achieved with the subject matter of the independent claims. Advantageous developments emerge from the dependent claims.

A production ring for assembling vehicles is described. The production ring has an upgrade line. The Aufrüststrang has mounting brackets, each with a front and a rear mounting plate unit. Vehicle components of a vehicle chassis can be positioned on the mounting plate units. In addition, the production ring has a strand of hemp, in which on the mounting brackets, a connection of the vehicle chassis is provided with a vehicle body. Disposed between the hank rope and the upgrade line is a plate logistics position in which front and rear mounting plate units are mounted on the mounting brackets. Each mounting bracket has an electrically operated self-propelled chassis.

By the plate logistics position between the hank rope and the Aufstrang, it is possible to populate advantageously released mounting brackets after passing through the wedding strand with each of a new front and rear mounting plate unit, which are intended for a single vehicle model, wherein in a Plattenlogistikbereich, the plate logistics position supplied in the production ring, a plurality of different mounting plate units are available for replacement at the mounting brackets located in the plate logistics position.

The range of variation of the vehicle models to be produced is thus unlimited. The electrically driven self-propelled trestles of the trestles also allow for speeding from the hank rope to the plate logistics position, making the mounting plate change, and accelerating the assembly trestle from the plate logistics position into the upgrade line. Also, the change of the mounting bracket from Aufrüststrang to the wedding strand can be performed faster to maintain the flow operation in this area of the production ring.

Thus, it is possible, despite the individual conveying speed regardless of an oval band through the self-propelled chassis to use the mounting brackets such that all previous interfaces for the production ring can be maintained. Thus, in the Aufrüststrang using the self-propelled flow operation can be maintained and the mounting brackets can be equipped in this area with the corresponding vehicle components of the vehicle chassis. In the wedding strand, the self-propelled chassis can ensure that the assembly stand is moved synchronously to a screwing machine, so that here too the interfaces do not have to be changed.

The self-propelled chassis is electrically connected in the production ring with underfloor current and control rails, so that both the Power supply is secured via the underfloor busbars as well as the control of the mounting blocks on the self-propelled chassis by the underfloor supply rail.

For this purpose, the self-propelled chassis can be inductively coupled to the power supply rails and / or the control rails. The mounting frame with the self-propelled chassis has wheels and additionally a drive wheel with axle motor. The axle motor can move the mounting bracket as fast as you like using the drive wheel. By the electric supply rails, it is also possible that the self-propelled chassis has a compressor for the supply of pneumatic control organs. This makes it possible to save conventional air pressure container conventional mounting blocks and to dispense with the usual compressed air charging station in a production ring for such compressed air tank.

The self-propelled chassis can now be controlled by electro-hydraulic actuators instead of pneumatic control devices, since an electrical supply is secured. By switching to electro-hydraulic actuators, the noise level in the production hall can be significantly reduced in an advantageous manner. In addition, such electro-hydraulic actuators have the advantage over pneumatic actuators that they can be precisely locked in very different end positions and intermediate positions, so that a precise alignment of the components of the vehicle chassis with the mounting aids on the mounting brackets is possible, and to be screwed together with each other chassis components can.

Finally, lifting and guiding cylinder can also serve in the wedding strand to lift the vehicle chassis in a screwed position with the body. In order to ensure the screwing together of the vehicle chassis on the mounting bracket with the vehicle body in the hemp rope, the mounting plate unit has a base plate with adjusting bolts for centering the wedding plate.

A method for pre-assembling vehicles in a production ring with an upgrade line and a wedding line comprises the following method steps. First, disk pairs are provided in a disk logistics area, with a disk pair providing front and rear mounting plate units for a single vehicle model.

Subsequently, a plate pair is transferred to a self-propelled chassis of a mounting bracket in a panel logistics position of the production ring. Thereafter, an accelerated queuing of the mounting bracket takes place in the Aufrüststrang. In the Aufrüststrang finally the mounting blocks are equipped with Fahrzeugchassiskomponenten. Thereafter, an accelerated queuing of the mounting bracket takes place again in the wedding strand. In the wedding strand is an automatic screwing of the vehicle chassis with a vehicle body. After uncoupling the preassembled vehicle from the mounting bracket, accelerated feeding of the mounting bracket to the disk logistics position is followed by swapping the disk pair needed for the next vehicle.

This method has the advantage that each mounting block is equipped with only a single pair of plates for a single variant of a model in the plate logistics position, a model change without delay by replacing the pairs of plates for the front and rear mounting unit in the plate logistics position can be made respectively. After equipping the mounting bracket with the only and correct model variant, this can then be moved by the self-propelled chassis in Aufrüststrang in the form of flow operation and record components of the vehicle chassis. Accordingly, the self-propelled chassis can be moved synchronously in the wedding line to a screwing machine.

Embodiments will now be described with reference to the accompanying figures.

1 shows a schematic sketch of a production ring according to an embodiment;

2 shows a schematic side view of a mounting bracket in Aufrüststrang;

3 shows a schematic side view of a mounting bracket in the wedding plate strand before placing a wedding plate on a mounting bracket;

4 shows a schematic side view of a mounting bracket after discontinuation of the wedding plate on the mounting bracket;

5 shows a plan view of a base frame with self-propelling racks of a mounting bracket;

6 shows a schematic plan view of a base plate of a mounting frame with chassis for position correction in the X direction;

7 shows a schematic plan view of a mounting unit for vehicle components of the vehicle chassis;

8th shows a schematic plan view of a wedding plate;

9 shows a schematic plan view of a wedding plate on a mounting bracket.

1 shows a schematic sketch of a production ring 1 according to one embodiment. The production ring 1 has an upgrade line 2 on, in the assembly bucks 3 ready to receive chassis components. Each receptacle 3 has a front mounting plate unit 4 and a rear mounting plate unit 5 on. Each mounting plate unit 4 respectively. 5 has mounting aids. Whereby on the front mounting plate unit 4 Chassis components of the front area of the vehicle and on the rear mounting plate unit 5 Rear parts of a vehicle chassis can be mounted. The individual markings symbolize on the mounting plate units 4 . 5 in 1 different chassis structures of different vehicle models, which can be mounted on the mounting brackets, the markings show that front and rear mounting plate units 4 respectively. 5 are each provided for a single vehicle model.

For example, in this illustrated production ring alone, there are thirteen different production models circulating on thirteen assembly blocks while in a pallet logistics area 21 additional plate pairs for other vehicle models available. The in the disk logistics area 21 Existing plate pairs can be picked up from a mounting trestle in a plate logistics position 7 of the production ring 1 be taken over. In the plate logistics position 7 of the production ring 1 each becomes a mounting stand 3 equipped with a mounting plate pair. The assembled assembly trestle 3 can then accelerated in the direction of arrow A in the Aufrüststrang 2 be ranked and there in the flow direction B successively record components of the vehicle chassis.

For accelerated movement of the mounting bracket 3 from the disk logistics position 7 in the upgrade line 2 has the mounting bracket 3 a self-propelled chassis shown in the later figures, with its own drive motor. These are in the area of the production ring 1 Underground busbars and / or control signal rails arranged, which are inductive with corresponding receptacles of the mounting brackets 3 are connected, so inductively both the signal and the electrical supply in the production ring shown here 1 to the assembly stands 3 be transmitted.

Once in the upgrade line 2 the assembly stand 3 is fully equipped and carries a complete vehicle chassis, he can accelerated in the direction of arrow C in the wedding strand 6 continue. First, be in a manual or automatic wedding area 22 lowered a vehicle body in the direction of the mounting bracket from a support frame and aligned and positioned to the chassis on the mounting bracket.

In a second area then the vehicle chassis is bolted to the vehicle body. In this area is a screwdriver 9 arranged, which screws together the two vehicle units to a pre-assembled vehicle. Finally follows in the wedding line 6 in the direction of arrow D another area 23 for the rework of the screw connection. In front of a branch point 24 become the pre-assembled vehicle and the assembly stand 3 separated from each other and the preassembled vehicle in the direction of arrow E removed from this production ring and the mounting bracket 3 accelerated in the direction of arrow F in the plate logistics position 7 procedure to record a next plate pair for another vehicle model.

2 shows a schematic side view of a part of a mounting bracket 3 in the upgrade line of the production ring. The assembly stand 3 has a self-propelled chassis 8th on, that's a drive wheel 19 owns and from an axle motor 20 is driven in the direction of arrow G. There are also four other roles 25 and 26 with which the assembly stand 3 with the applied components of the vehicle chassis on the ground 27 the production ring with the help of the self-propelled chassis 8th be moved, on a base frame 11 rotatably fixed.

From the assembly stand 3 Here is just a rear mounting unit 5 shown. The assembly unit 5 is now in this embodiment of a lift cylinder 13 and two guides 12 and 14 for lifting a base plate mounted on four rollers 15 lifted to a mounting height. At the top 30 the base plate 15 protrude adjusting bolt 16 . 17 which can be inserted into a wedding plate reception camp. Another centering pin 31 . 40 The base plate ensures the alignment of the base plate shown here 15 to the vehicle body.

3 shows a schematic side view of a mounting bracket 3 in the wedding line 6 before putting on a wedding plate 18 on a base plate 15 of the mounting bracket 3 , Again, only the rear mounting unit 5 shown. With the help of the roles 28 . 29 can the base plate 15 with the adjustment bolts 16 . 17 exactly on reception camp 32 . 33 one in a support frame 34 hanging vehicle body are aligned and then in the direction of arrow H to the support frame on the aligned base plate 15 by inserting the adjustment bolts 16 . 17 in the storage openings 32 . 33 the wedding plate 18 ,

4 shows a schematic side view of the mounting block 3 after placing the wedding plate 18 on the base plate 15 , After that, the support frame 34 be removed in the first the support frame 34 continues to shut down to transport bolts 35 . 36 from transport warehouses 37 . 38 the wedding plate 18 Pull down and then the support frame 34 be spread in the direction of arrows K and L, to then be lifted in the direction of arrow M from the mounting bracket. The lifting cylinders and guides 12 . 13 and 14 of the basic frame 11 can be hydraulic, or as in 4 is shown, pneumatically in the direction of arrow O by means of an electrically operated compressor 10 be lifted pneumatically.

5 shows a plan view of a base frame 11 a mounting bracket with self-propelled frame 8th , The basic frame 11 carries the three lifting cylinders and guides shown in the preceding figures 12 . 13 and 14 and can work on four roles 25 . 26 . 45 and 46 be moved horizontally. A drive wheel 19 This is done by an axle motor 20 driven and can the self-propelled chassis 8th with the base frame 11 in the production ring 1 , as in 1 is shown moving independently of a conveyor chain or a circulating belt.

6 shows a schematic plan view of a base plate 15 , the one-sided centering pin 31 and 40 for the vehicle body. On the top 30 the base plate 15 are the centering bolts 16 and 17 for aligning on reception camp of in 4 arranged wedding plate arranged. Below the base plate 15 are rolls with dashed lines 28 . 29 such as 48 . 49 shown with which the base plate 15 up to 60 cm in direction of arrow X on the base frame 11 who in 4 is shown, can be moved or aligned.

7 shows a schematic plan view of a front mounting unit 4 from the in 6 shown base plate 15 and the base frame shown with dashed lines 11 on which the roles 28 . 29 such as 48 . 49 are arranged.

8th shows a schematic plan view of a wedding plate 18 with the reception warehouses 32 . 33 for the centering bolts 16 . 17 the base plate 15 as they are in 7 will be shown. Also, at the wedding plate 18 four transport warehouses 37 . 38 . 41 . 42 as well as in 4 and 8th are shown, arranged with transport bolts of the support frame 34 as it is in 4 is shown, interact. Also, at the wedding plate 18 further transport camps 41 and 42 arranged for securing the transport in the transport frame.

9 shows a schematic plan view of a wedding plate 18 over a mounting block 3 whose outlines are marked with dashed lines. Components having the same functions as in the previous figures are identified by the same reference numerals and will not be discussed separately.

LIST OF REFERENCE NUMBERS

1

fabrication ring

2

Aufrüststrang

3

trestle

4

front mounting unit

5

rear mounting unit

6

Wedding train

7

Plate logistics position

8th

even chassis

9

Verschraubungsautomat

10

compressor

11

base frame

12

Lifting and guide cylinder

13

Lifting and guide cylinder

14

Lifting and guide cylinder

15

baseplate

16

Adjustment Bolts

17

Adjustment Bolts

18

Wedding plate

19

drive wheel

20

axis motor

21

Plate logistics

22

manual wedding area

23

Area for rework

24

branching point

25

role

26

role

27

ground

28

role

29

role

30

top

31

Centering bolt of the body

32

reception camp

33

reception camp

34

supporting frame

35

transport bolts

36

transport bolts

37

transportation warehouse

38

transportation warehouse

40

Centering bolt of the body

41

transportation warehouse

42

transportation warehouse

45

role

46

role

48

role

49

role

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 19523294 A1 [0002]

Claims (14)

Manufacturing ring for pre-assembly of vehicles comprising: - an upgrade line ( 2 ), the mounting brackets ( 3 ) each having a front and a rear mounting plate unit ( 4 . 5 ), wherein on the mounting plate units ( 4 . 5 ) Vehicle components of a vehicle chassis can be positioned; - a wedding strand ( 6 ), in which on the mounting brackets ( 3 ) is provided connecting the vehicle chassis with a vehicle body; A plate logistics position ( 7 ) in the production ring ( 1 ) between wedding line ( 6 ) and upgrade line ( 2 ) is arranged in the on the mounting brackets ( 3 ) front and rear mounting plate units ( 4 . 5 ) are mountable, each mounting bracket ( 3 ) an electrically operated self-propelled chassis ( 8th ) having. Manufacturing ring according to claim 1, wherein the mounting brackets ( 3 ) in the upgrade line ( 2 ) can be equipped with vehicle components in a flow and / or stop-and-go operation. Production ring according to claim 2, wherein the self-propelled chassis ( 8th ) in the wedding strand ( 6 ) is drivable in synchronism with a screwing machine. Production ring according to one of the preceding claims, wherein the self-propelled chassis ( 8th ) in the production ring ( 1 ) is electrically connected to underfloor current and control rails. Production ring according to one of the preceding claims, wherein the self-propelled chassis ( 8th ) is inductively coupled to power rails and control rails. Production ring according to one of the preceding claims, wherein the self-propelled chassis ( 8th ) a drive wheel ( 19 ) with axis motor ( 20 ) having. Production ring according to one of the preceding claims, wherein the self-propelled chassis ( 8th ) a compressor ( 10 ) for the supply of pneumatic control organs. Production ring according to one of the preceding claims, wherein the self-propelled chassis ( 8th ) has electro-hydraulic actuators. Manufacturing ring according to one of the preceding claims, wherein mounting bracket ( 3 ) a basic frame ( 11 ) with lifting and guiding cylinders ( 12 . 13 . 14 ) having. Production ring according to one of the preceding claims, wherein the mounting plate unit ( 4 . 5 ) a base plate ( 15 ) with adjusting bolts ( 16 . 17 ) for centering a wedding plate ( 18 ) having. Production ring according to one of the preceding claims, wherein the production ring ( 1 ) conventional interfaces to the upgrade line ( 2 ) and to the wedding strand ( 6 ) having. Method for pre-assembling vehicles in a production ring ( 1 ) with an upgrade line ( 2 ) and a wedding strand ( 6 ), the method comprising the steps of: providing plate pairs in a plate logistics area, wherein a plate pair has a front and a rear mounting plate unit for a single vehicle model; - Passing a plate pair on a self-propelled chassis ( 8th ) of a mounting bracket ( 3 ) in a disk logistics position ( 7 ); - Accelerated insertion of the mounting bracket ( 3 ) in the upgrade line ( 3 ); - equipping the assembly stand ( 3 ) with vehicle chassis components in the upgrade line ( 2 ); - Accelerated insertion of the mounting bracket ( 3 ) in the wedding strand ( 6 ); - Automatic or manual screwing of the vehicle chassis with a vehicle body in the strand of wedding ( 6 ); - Uncoupling the preassembled vehicle from the assembly stand ( 3 ); - accelerated feeding of the mounting bracket ( 3 ) to the disk logistics position ( 7 ) for receiving another pair of plates. Method according to claim 11, wherein the self-propelled chassis ( 8th ) in the upgrade line ( 2 ) is moved in a flow and / or stop-and-go operation and thereby the mounting bracket ( 3 ) is equipped with components of the vehicle chassis. Method according to claim 10 or claim 12, wherein the self-propelled chassis ( 8th ) in the wedding line ( 6 ) synchronously with a screwing machine ( 9 ) is moved.

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