JPH03281133A - Automatic assembly device of sheet slide for car - Google Patents

Abstract

PURPOSE:To easily assemble a lower rail and an upper rail, by moving the upper rail to lower rail, feeding balls in order to a ball built-in part and also building in balls into both rails after detecting the existence of the ball. CONSTITUTION:When a slide unit 1a placed on a transfer belt 50 reaches the lower part of a clamp mechanism 28, an upper rail 3 is held by a clamp 26a and lifted to a ball feeding height position. The ball feeding part placed on a lower rail 2 is exposed by moving a base 21 and a ball 4 is fed via a tube 32. This state is confirmed with its detection by a sensor, etc., the opposite side end part of the lower rail is exposed by reversely moving the base 21 and returned to the center position where both rails 2, 3 are superposed after feeding the ball 4 similarly. A locking part 14 is formed at both ends of the upper rail 3, etc., the ball 4 is stored at the specific place by performing the reciprocating drive with the addition of the load by the superposition and the defective part of no good movement is selected.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an automatic assembly device for a vehicle seat slide that supports a seat body of a vehicle seat so as to be movable and adjustable in the longitudinal direction.

[Conventional technology]

-S, the vehicle seat is equipped with a seat body consisting of a seat cushion and a seat I/back, etc. that is installed upright behind the seat cushion and can be rotated freely, and the seat cushion that constitutes the seat body is By supporting it on the vehicle floor hill with a front-rear sliding mechanism, it is possible to adjust the sliding movement in the front-rear direction of the vehicle body.

It is designed to accommodate the body shape, preferences, etc. of the seated person.

The longitudinal sliding mechanism of such a seat consists of a lower rail fixed to the floor of the vehicle body and an upper rail fixed to the seat body, and a ball bearing means is interposed between these rails. A vehicle seat slide unit made of the following is used.

[Problem to be solved by the invention]

By the way, according to this type of vehicle seat slide, when assembling the lower rail and the upper rail, each of which is formed by bending a metal plate material into a roughly U-shape, so as to be able to slide freely in the longitudinal direction, there is a conventional method. This method requires the laborious and complicated work of manually assembling and holding the balls one by one in the ball mounting position formed between both rails. In particular, when assembling the slide unit mentioned above, it is necessary to securely install the balls that serve as bearing means in the appropriate position to prevent abnormal noise during sliding operation and malfunction due to sliding resistance. Furthermore, not only confirmation and inspection work is required, but also work is required to separate good products from defective products, which poses problems in terms of workability, number of work steps, etc., and increases costs. Ta.

Recently, there has been a great demand for automatic assembly of various mechanical parts, and this is also true for the vehicle seat slides mentioned above. Taking these points into consideration, it is necessary to take some measures that can solve the problems mentioned above. is required.

[Means to solve the problem]

In order to meet such demands, the automatic assembly device for a vehicle seat slide according to the present invention includes a slide unit consisting of a lower rail and an upper rail that are assembled in advance and set in a predetermined position, and grips both longitudinal ends of the upper rail. An upper rail movable means for moving a predetermined amount in a longitudinal direction relative to the lower rail, and a ball being supplied to a predetermined location on the lower rail while the upper rail is moved a predetermined amount to one side with respect to the lower rail by the movable means. A ball supply means, a means for detecting the presence or absence of a ball supplied by the supply means, and a press means for forming a locking portion on at least one of the upper rail and the lower rail to restrict movement of the ball in the longitudinal direction of the rail. , comprising a break-in means for reciprocating the upper rail relative to the lower rail, and a sorting means for sorting out the quality of the seat slides inspected by the break-in means and separating defective products from the products and transporting them. It is structured as follows.

[Effect]

According to the present invention, the upper rail of the slide rail set at a predetermined location is gripped by the movable means and moved relative to the lower rail, and the balls are sequentially delivered to the ball-incorporated portion exposed to the outside by the ball supply means. At the same time, the presence of the ball is detected and confirmed, and then the ball is assembled into the circular rail and a locking part is formed at a predetermined location on the rail, and both rails are slid relative to each other. In order to prevent problems such as balls falling off, both rails are moved relative to each other to ensure that the balls are placed in the designated locations, and to inspect whether or not they have been assembled correctly. Defective products can be automatically separated and transported.

〔Example〕

Hereinafter, the present invention will be explained in detail using embodiments shown in the drawings.

1 to 7 show an embodiment of an automatic assembly device for a vehicle seat slide according to the present invention. In these figures, first, the vehicle seat slide 1 is illustrated using FIGS. To briefly explain the general structure, 2 is a lower rail fixed to the floor surface of a vehicle interior (not shown) by legs 2a, 2b, etc., and 3 is a lower rail that is combined and guided so as to be slidable in a longitudinal direction on this lower rail 2. In the supported upper rail, a pair of left and right balls 4.4 are interposed between the two rails at the front and rear in the longitudinal direction of the rail. It is well known that the seat body, which is composed of a seat cushion, a seat back, etc. (whose parts are not shown), is supported so as to be slidable in the longitudinal direction of the seat on the floor surface of the vehicle interior.

Now, according to the present invention, the automatic assembly device 10 for the vehicle seat slide 4 is characterized in that it is configured as shown schematically in FIGS. 1 to 4. That is,
The automatic assembly device 10 constructs a slide unit la by simply combining a lower rail 2 and an upper rail 3, and by setting this at a predetermined position, the slide unit la is installed to be movable up and down on the upper rail. an upper rail moving means 11 that grips both ends of the rail 3 in the longitudinal direction and moves it longitudinally relative to the lower rail 2; A ball supply means 12 that supplies the balls 4 to a predetermined installation position on the lower rail 2, a detection means 13 that detects the presence or absence of the balls 4 on the lower rail 2, and at least one of the upper rail 3 and the lower rail 2 (for example, the upper a press means 15 for forming a locking part 14 (see FIG. 7) on the rail 3) that restricts the movement of the ball 4 in the longitudinal direction of the rail; and a press means 15 for reciprocating the upper rail 3 relative to the lower rail 2. A movable means 11 that also functions as a means, and a sorting means (not shown) that sorts the sheet slide 1 inspected by this means 11 to determine whether it is good or bad and separates good products g from defective products and conveys them separately. It is characterized by a configuration comprising the following.

Here, the upper rail movable means 11 is attached to a movable base 21 that is movable in the left and right directions while being erected on a device mount 20 consisting of a base 20a and left and right columns 20b and 20c. A clamp base vertical movement cylinder 23 that can move the lifting bracket 22 up and down, a base left and right movement cylinder 25 that moves the movable base 21 in the left and right direction via a slide mechanism 24, and a clamp installed on the lifting bracket 22. A pair of left and right clamps 26a and 26a of the base 26 are connected to the clamp cylinder 2.
The clamp mechanism 28 is configured to be able to be driven by a clamp mechanism 7.

Note that 29 is a rail set cylinder for lifting the clamp mechanism 28 so as to provide a ball supply gap between both rails when the upper rail 3 is clamped.

The ball supply means 12 also includes a hopper 30 in which a large number of balls 4 are stored, a ball supply cylinder 31 that opens and closes duct portions 30a and 30a from the hopper 30 to supply the balls 4 one by one, and the left, Right clamp 26a
, two flexible tubes 3 each reaching the 26a part.
2.32 etc. Here, a configuration is shown in which two balls 4, 4 on the left and two on the right are simultaneously supplied to the left and right portions of the lower rail 2.

Furthermore, locking portions 14.1 are provided at both ends of the upper rail 3, etc.
The means 15 for forming 4 by a press or the like is not shown in detail, but for example, a press cylinder or the like is provided on the back side of the base 21, and a load cell or other sensor shown as 13a and 13a in FIG. Detection means 13 by etc.
After detecting that the ball 4 is inserted, it is conveyed to the back side and held at a predetermined position, thereby forming a punch-out protrusion or the like. In addition, in Fig. 7, 1
6.16 is a locking part for regulating the ball 4 formed in advance at the center of the upper rail 3, and 17.18, 17.18 is formed in advance at a predetermined interval on both longitudinal ends of the lower rail 2 This is a locking part that constitutes a part where the ball 4 is installed. According to such locking portions 14, 16, 17, 18, etc., even if a positional shift occurs due to sliding movement between both rails 2.3 on slide rail l, ball 4 will not fall off to the outside. Such problems do not occur, and its effects are obvious. Furthermore, in FIGS. 3 and 4, 40 is a weight having a weight of about 20 kg\ which provides the weight for inspecting the slide unit (la) with the ball 4 interposed therein. By sliding the rail 3 etc. using the clamp mechanism 28 etc. and detecting the force etc. during movement using the load cells 13a, 13a, it is possible to judge whether the assembly has been carried out correctly and a good product has been completed. It's good to do it.

According to such a configuration, the ball 4 can be assembled into the slide unit (la) in the following manner. That is, in the workpiece setting step a) in FIG. 1, when the operator places the slide unit (la) assembled in advance on the conveyor belt as shown by 50 in FIG. , press down the vertical movement cylinder 23 and move the lower rail 2 without the balls 4.
A clamp 26a is moved by a clamp cylinder 27 to move the upper rail 3 overlapping the upper rail 3.

26a, and lift it to a predetermined ball supply height using the rail set cylinder 29. Next, the left and right moving cylinders 25 are operated to move the base 21 to either the left or right to expose the ball supply portion formed on the end side on the lower rail 2, and in this state, the tube 32
．． 32 supplies balls 4.4 from the hopper 30 to the left and right (ball supply step b in FIG. 1).

This state is detected and confirmed by a sensor (not shown), and if the ball 4 has fallen or is not present, it is supplied again.

In addition, the base 21 is moved in the opposite direction to expose the opposite end of the lower rail 2, and the balls 4, 4 are supplied in the same manner as described above, whereby two balls 4, 4 on the left and two on the right are
It is preferable to insert it in front and behind the rail 1, and then return it to the central position where the circular rails 2 and 3 overlap. and,
In this state, locking parts 14.14 are formed at both ends of the upper rail 3 etc. using a press means 15 etc. so that the balls 4. , 3 slide relative to each other, problems such as the balls 4 falling off are prevented from occurring (pressing and ball supply process C in FIG. 1).

Furthermore, after the above-mentioned assembly, the press means 1 is again
5 to apply a load (press step d in Fig. 1), and then apply a constant load (2
(approximately 0 kg), and further add, for example, 5 kg from the left and right directions.
A break-in operation is performed in which the ball 4 is stored in a predetermined position by applying an acting force of approximately 1 kg and reciprocating the ball 4 several times (inspection 2 step e in FIG. 1). Then, based on the results, it is preferable to sort out the defective products that are slow to move and feed them to a worker or the like for reassembly, while the good products g are transported to a fixed transport location. Of course, these processes are performed automatically, and between each process, time is required to return the movable parts of each mechanism to its original state and to transport the product.

According to such a configuration, although the configuration is simple, it is possible to automate the supply of balls 4, assembling work, inspection work, sorting processing work, etc. in the seat slide l, thereby eliminating the troublesome and complicated work that was conventionally done manually. In addition to eliminating the problems that often occur during this work, such as the occurrence of missing balls 4, the occurrence of defective products due to this, and the troublesomeness of the sorting work, it also prevents the occurrence of defective products in particular.
Furthermore, it is possible to significantly shorten assembly work time, save labor, and further reduce manufacturing costs.

Note that the present invention is not limited to the structure of the embodiment described above, and the shape and structure of each part, including the vehicle seat slide I and the mechanical parts of its automatic assembly device 10, may be modified as necessary. You are free to make changes. For example, A2
Means 15 for forming the detecting means 13 and the locking part 14, including the par rail movable means 11, the ball supply means 12, etc.
The leveling means, sorting means, etc. are not limited to the embodiments described above, and various modifications may be considered.

〔Effect of the invention〕

As explained above, according to the automatic assembly device for a vehicle seat slide according to the present invention, in a slide unit including a lower rail and an upper rail that are assembled in advance and set in a predetermined position, the lower rail is assembled by gripping both longitudinal ends of the upper rail. movable means for moving the upper rail by a predetermined amount in the longitudinal direction relative to the upper rail; means for detecting the presence or absence of a ball supplied by the press means; and a locking portion for regulating the movement of the ball in the longitudinal direction of the rail on at least one of the rails; Although the structure is simple, it is equipped with a break-in means that performs reciprocating movement, and a sorting means that sorts the sheet slides inspected by this means to determine whether they are good or bad and separates and transports defective products from the products. First, by automating the ball supply, assembly work, inspection work, sorting processing work, etc. in the seat slide, we can eliminate the troublesome and complicated work that was previously done manually, and also eliminate the problem of ball shortages that often occur during this work. It eliminates problems such as the occurrence of defective products and the troublesome work of sorting them out, and in particular prevents the occurrence of defective products, significantly shortens assembly work time, saves labor, and further reduces manufacturing costs. There are various excellent effects such as.

[Brief explanation of drawings]

FIG. 1 is a schematic process diagram showing an embodiment of an automatic assembly device for a vehicle seat slide according to the present invention, FIG. 2 is a schematic perspective view of the device, and FIGS. 3 and 4 are front views and main parts thereof. 5 is a schematic perspective view of the vehicle seat slide, FIG. 6 is a sectional view of the main part 5, and FIG. 7 is for explaining the locking part that defines the position where the ball is installed in the lower rail and the upper rail. FIG. In the figure, l... vehicle seat slide, la... slide unit, 2... lower rail, 3... upper rail, 10... automatic assembly device, 11... upper rail moving means, 12... ball supply means, 13
... detection means, 14 ... locking part, 15 ... press means, 20 ... device mount, 28 ... clamp mechanism,
50... Conveyor belt, a... Work setting process, b
...Hole supply process, C...Press and ball supply process, d...Press process, e...Inspection process, f.
...Sorting process, g...product, h...defective product. 6

Claims (1)

[Claims] An automatic assembly device for assembling a vehicle seat slide consisting of a lower rail and an upper rail supported slidably in the longitudinal direction with a ball interposed in the lower rail, the lower rail and the upper rail being assembled in advance. an upper rail movable means that grips both longitudinal ends of the upper rail in the slide unit by setting the slide unit in a predetermined position and moves the upper rail by a predetermined amount relative to the lower rail in the longitudinal direction; ball supply means for supplying the ball to a predetermined location on the lower rail while moving the ball a predetermined amount to one side with respect to the lower rail; means for detecting the presence or absence of the ball supplied by the supply means; the upper rail; a press means for forming a locking part on at least one of the lower rails to restrict the movement of the ball in the longitudinal direction of the rail; a smoothing means for reciprocating the upper rail relative to the lower rail; and an inspection using the smoothing means. 1. An automatic assembly device for a vehicle seat slide, comprising a sorting means for sorting defective seat slides to determine whether they are good or bad and separating and conveying defective products from the products.