FR2497149A1 - SLIDING MECHANISM AND GUIDE FOR PRESSES - Google Patents

Abstract

THE INVENTION RELATES TO A SLIDING MECHANISM AND GUIDE FOR PRESSES. THE MECHANISM IS CHARACTERIZED IN THAT AN UPPER PART OF THE SLIDER CONTAINING THE TOOL MOUNTING SURFACE 5, ON WHICH AN UPPER PART OF THE TOOL IS FIXED BY SCREWS, IS CONNECTED TO A LOWER PART OF THE SLIDE 10 BY OF JUNCTION PARTS 6, IN THAT THE LOWER PART OF SLIDER 10 SURROUND A MOUNTING TABLE 11 ON THE FIXING SURFACE 12 TO WHICH A LOWER PART OF TOOL 9 IS FIXED WITH SCREWS 16, IN THAT EACH CORNER OF THE UPPER PART OF SLIDER 4, THE JUNCTION PARTS 6, AND EACH CORNER OF THE LOWER PART OF SLIDER 10 ARE EACH EQUIPPED WITH A GUIDING ELEMENT OF SLIDER 13 IN ORDER TO FORM AN OCTYL GUIDING SYSTEM WITH BALLS, AND IN WHAT THE SHEET PLAN 8 PREFERABLY PASSES THROUGH THE INTERSECTION POINT 27 OF DIAGONALS 25, 26 OF THE SLIDER. APPLICATION TO CRANKSHAFT PRESSES, ESPECIALLY FOR BOX MANUFACTURING.

Description

The present invention relates to a mechanism for

  slide and guide for presses. The invention is

  cable to crankshaft presses for parts of boxes.

  There are application possibilities for all presses whose tools must be guided with great precision.

  We know a whole series of inventions that

  improve the guidance of the slide in its frame.

  ti (WP B 30 B / 197 091). These inventions bring an

  improvement over conventional roller guides,

  balls and slides. In the case of an ex-

  center of the slide, it occurs however, due to the necessary play of guiding, and by flattening of the bodies

  wheels and by deformation of the press frame, an inclination

  sound of the slider. The upper tool attached to the inside

  The bottom of the slide moves relative to the lower tool

  because the tipping point of the slider is

  well above the plane of the sheet. The displacement is from

  so much bigger than the sheet metal plane is farther away from the point

  tilting of the slide. In addition, we know, in accordance

  Swiss patent CH-543,375, a slide on the

  of which four columns are

  guiding lines which additionally provide guidance

  slide in the area of the plane of movement of the

  of. A disadvantage encountered in this case concerns the

  unilateral guide columns.

  The tipping point of the slider is located well above the sheet metal plane so that also in

  this case a slight inclination of the slider causes a de-

  placement of the upper part of the tool towards the

  tool and therefore premature wear.

  According to the French patent FR 1 489 878, it is

  a slide is formed which is connected to two vertical supports which are guided through the lower part of the press frame and which are connected to each other below the press. This embodiment allows a very long guidance also below the sheet plane but, as a result of

  its mass, it can be used in presses function-

  slowly and requires. also in this case a high expense. The accessibility of the tool is strongly limited on both sides.

  The object of the invention is to remedy the inconveniences

  the above-mentioned solutions, to increase the service life of conventional press tools and to create the possibility of using coated press tools

hard metal.

  The object of the invention is to provide a slider and a guide provided in a press and which establish with the press frame pairs of guides located on both sides of the press.

  sides of the plane of movement of the sheet metal strip and

  carrying continuous guide portions extending the entire length of the slide, said slide having a

low mass and a compact form.

  The problem is solved according to the invention in

  an upper part of the slider comprising the

  the attachment face of the tool, on which a higher

  tool is fastened with screws, is connected to a lower part of the slider by connecting parts, and in that the lower part of the slider surrounds

  a mounting table on the attachment surface of which

  the is held a lower part of tool by screws,

  each corner of the upper part of the slider, the

  joining points and each corner of the lower part of

  slider being provided with a slide guiding element

  bucket so as to form together an octu-

  ball bearings, the plane of the sheet passing preferably through

  the point of intersection of the diagonals of the slider.

  During the descent of the slide, it occurs, in the case of an eccentricity of the load, an inclination

  which is a function of the rigidity of the guide elements.

  The slide then rotates around the point of intersection of the diagonals which is located in the plane of the sheet. In this plane occurs the cutting action. Moving from

  the upper part of the tool compared to the lower part

  tool is reduced to a small residual value

  corresponding to the deviation from said plane.

  The advantage of the invention is that

  slide of a fast-moving press is arranged

  than the slight inclination, inevitable because of the elastic deformation of the guides and rolling bodies under

  the effect of an eccentric load has no more disturbing

on the tool.

  Another advantage is that the slider thus arranged has, to a large extent, a size and a mass corresponding to that of the normal slider and is thus particularly suitable for fast-moving presses. Fees

  of construction remain low. The slide is made

  compactly in one piece.

  The slides provided in the frame of the press are arranged so that the slide is guided by its guiding elements along its entire length during the

his entire race.

  The slide guiding elements, operating by eight-fold guidance, are placed in the stitch position

  dead high and in the bottom dead center position of the slide

  bucket, inside the guide rails of the frame. he

  there is no exit from the slider out of the sliders

  guiding the frame of the press.

  With the aforementioned arrangement of the upper part of the slider, the lower part of the slider and the connecting elements, interruptions are created in the

plane of the sheet.

  Interrupts created in accordance with this

  The invention has an advantageous effect because it is ensured of a good accessibility of the tool for its assembly and

  dismantling and also feeding. advantageously

  The simplicity of assembly and disassembly of the slider does not differ from that of the known embodiments.

  Other advantages and characteristics of the

  will be highlighted in the rest of the

  description, given by way of non-limiting example, in

  FIG. 1 is a sectional view of the slider and its guide; - Figure 2 is a section taken along the line A-A of Figure 1; - Figure 3 is a section taken along the line B-B of Figure 1; and - Figure 4 is a section made according to the

line C-C of FIG.

  Figure 1 shows the slide in the

  bottom dead center and Figure 2 in its position of

top dead center.

  In the frame 1 of the press including the slides

  2 is provided the slider, consisting of the upper part 4 provided with the tool attachment surface 5, the joining parts 6, 18, 19 and 20 and

the lower part 10.

  The upper part 7 of a multiple tool is mounted on the attachment surface 5 of the upper part of the slider 4 by means of the screws 150. The lower part 9 of the tool is connected by screws 16 to the attachment table. 11 penetrating the lower portion of the slider 10. The fastening table 11 is rigidly connected to the frame 1 of the press. The upper part 7 and the lower part 9 of the tool comprise additional guide elements 17

  tool. The slide is connected to the driving device

  the press via the hinge 3 fixed in the upper part 4 of the slider. The upper part 4 of the slider, the joining parts 6, 18, 19, 20 carry the guide elements 13 of the slider

comprising the rolling bodies 14.

  The guide rails 2 are therefore arranged in such a way that they guide the elements of

  sliding guide 13 with the rolling bodies 14

  the entire stroke of the slider. The clamping surface 12 of the upper part 4 of the slider is

  arranged in such a way that in the cutting operation

  shown in FIG. 1, the sheet metal plane 8 is located,

  the diving movement of the upper part 7 of

  the tool in the lower part 9, on the point of in-

  tersection 27 of the diagonals 25, 26 of the slide. Enter

  junction parts 6, 18, 19, 20, there is provision for

21, 22 23 and 24.

REVEDICATIONS

  1) Sliding mechanism and guide for presses,

  characterized in that said upper portion (4) of the neck

  slat having the tool attachment surface (5), on which an upper tool portion (7) is mounted by means of screws (15), is connected to a lower part of the slider (10) by parts junction (6; 18; 19; 20), in that the lower part of the slider (10) surrounds a mounting table (11) on the attachment surface (12) from which is fixed a lower part of the tool ( 9) to

  using screws (16), in that each corner of the upper part

  slider (4), the joining portions (6; 18,19; 20) and each corner of the lower slider portion.

  (10) are each provided with a slide guiding element

  bucket (13) and advantageously constitute a guiding system

  octyl ball bearing, and in that the sheet metal plane (8) is

  preferably by the point of intersection (27) of the diagonals

nales (25; 26) of the slider. -

  2) Sliding mechanism and guide for presses sec-

  1, characterized in that the slides

  guiding elements (2) provided in the frame (1) of the press are arranged so that the slide is guided by its guiding elements (13) along its entire length during

all his displacement.

  3) Sliding mechanism and guide for presses sec-

  one of claims 1 and 2, characterized in that,

  because of the arrangement of the upper part of

  bucket (4), the lower slider portion (10) and the joining portions (6; 18; 19; 20), the recesses (21; 22;

  23; 24) are in the sheet plane (8).