CS217668B1

CS217668B1 - Additional scissor shears

Info

Publication number: CS217668B1
Application number: CS335979A
Authority: CS
Inventors: Jaroslav Janiga; Pavol Vicena
Original assignee: Jaroslav Janiga; Pavol Vicena
Priority date: 1979-05-16
Filing date: 1979-05-16
Publication date: 1983-01-28

Abstract

Přídavné zariadenie k tabulovým nožniciam a sposob obstrihu nevyžadujúci obrysovávanie polotovaru. Účelom vynálezu je zabezpečenie zníženia pracnosti a zvýšenia přesnosti pri obstrihovaní polotovaru výparníka. Účelu sa dosiahne přídavným zariadením k tabulovým nožniciam tvořeným minimálně tromi posuvné uloženými chápadlami 3 tvořenými hlavicami 6 opatřenými hranatou dierou pre rameno 9 zameriavača 10 a dierou pre jeden koniec radiálnej pružiny 7, ktorej druhý koniec je uchytený v drážke 12 vodiacej tyče 1 a na vysunutej lište 13 osadenej kolmo na nože je upevněný držiak 4 šablony 5. Sposob obstrihu pozostáva z dvoch pozdlžnych strihov pri ktorých sa výparník ustavuje podlá základného kanála pod zameriavačom chápadiel resp. podlá značky na stole nožníc a z dvoch priečnych strihov, pri ktorých sa výparník ustavuje podlá značky na stole nožníc resp. podlá tolerančných farebných polí šablony. Vynález charakterizuje obr. 1Additional device for sheet shears and a method of cutting that does not require contouring of the blank. The purpose of the invention is to ensure a reduction in labor and an increase in accuracy when cutting an evaporator blank. The purpose is achieved by an additional device for sheet shears consisting of at least three slidably mounted grippers 3 formed by heads 6 provided with a square hole for the arm 9 of the sight 10 and a hole for one end of the radial spring 7, the other end of which is mounted in the groove 12 of the guide rod 1 and on the extended bar 13 mounted perpendicular to the knives, a holder 4 of the template 5 is fixed. The cutting method consists of two longitudinal cuts in which the evaporator is positioned according to the basic channel under the gripper sight or. according to the mark on the shear table and of two transverse cuts in which the evaporator is positioned according to the mark on the shear table or. according to the tolerance color fields of the template. The invention is characterized by Fig. 1

Description

Vynález charakterizuje obr. 1 217668 2The invention is characterized by FIG. 1 217668 2

Predmetom vynálezu je přídavné zariadenie k tabulovým nožniciam a spósob obstrihu, ktorý nevyžaduje predchádzajúce obrysovávanie polotovaru. V súčasnosti sa vyvalcovaný polotovar výparníka chladničky alebo mraziaceho zariadenia (ďalej len výparník) s vytlačenými kanálmi róznych pódorysných a prierezových tvarov po výplachu izolačnej emulzie a vysušení kanálov jednotlivo obrysováva podlá priesvitnej šablony tak, že šablona sa přiloží na polotovar výparníka a ustavuje sa pozdlžne i priečne tak, aby sa kanály nachádzali v jednotlivých tolerančných poliach šablony. Po ustavení sa ručně obrysujú obrysy výparníka. Túto prácu vykonává rysovačka na pracovnom stole mimo pracovného priestoru nožníc. Vlastný obstrih sa uskutoční na tabulových nožniciach podlá narýsovaných obrysov za pomoci světelného lúča, ktorý dopadá na narýsovaný materiál v mieste střihu. Nožnice obsluhujú dve pracovníčky. Nevýhody takéhoto spósobu je pracnost a nepresnosť obstrihu prvý krát pri samotnom rýsovaní a druhý krát pri zameriavaní rysky pod světelný lúč pri střihaní. Požaduje sa presnosť obstrihu + 1 mm.The subject of the invention is an additional device for sheet shears and a method of cutting which does not require prior contouring of the blank. Nowadays, the rolled evaporator blank of the refrigerator or freezer (hereinafter referred to as an evaporator) with the extruded channels of the porous and cross-sectional shapes after the rinsing of the insulating emulsion and the drying of the channels is individually contoured according to the translucent template such that the template is applied to the evaporator blank and set longitudinally or transversely so that the channels are within the individual tolerance fields of the template. Evaporator contours are manually contoured after alignment. This work is done by a lynx on a desk outside the scissors working area. The actual cut is made on the sheet shears according to the drawn contours by means of a light beam which impinges on the drawn material at the cutting point. The scissors are operated by two workers. The drawbacks of such a method are the laboriousness and inaccuracy of the grinding for the first time in the drawing itself and the second time when aiming the line under the light beam when cutting. Precision of cutting accuracy + 1 mm is required.

Uvedené nevýhody odstraňuje zariadenie podlá vynálezu, ktorého podstata je v tom, že je tvořené minimálně tromi posuvné uloženými vratnými chápadlami, tvořenými hlavicami opatřenými hranatou dierou pre rameno zameriavača a dierou pre jeden koniec radiálně j pružiny, ktorej druhý koniec je uchytený v drážke vodiacej tyče a na vysunutej lište, osadenej kolmo na nože, je upevněný držiak šablony. Výhody vynálezu spočívajú hlavně v znížení pracnosti. Polotovar výparníka sa obstriháva na tabulových nožniciach priamo, bez predchádzajúceho obrysovávania. Okrem toho týmto spósobom sa dosahuje zvýšenie přesnosti obstrihu.The above-mentioned disadvantages are eliminated by the device according to the invention, which is characterized in that it comprises at least three slidably mounted reversible grippers, comprising heads provided with an angular hole for the aiming arm and a hole for one end of the radial spring, the other end of which is held in the groove of the guide rod and a template holder is attached to the extended bar, perpendicular to the knife. The advantages of the invention lie mainly in reducing labor. The evaporator blank is trimmed on sheet shears directly without prior contouring. In addition, this increases the accuracy of the grinding.

Claims

OBJECT A scissor scissor attachment mounted on a guide bar attached to the side plates and bracket brackets, characterized in that it comprises at least three movable grippers (3) formed by heads (6) provided with an angular hole for an example of a scoring device according to FIG. 1 shows a front axonometric view, FIG.

2 detail of reversible gripper with sight. The additional device consists of a guide rod 1 attached to the side 11 of the scissors and supported by the brackets 2 so as to avoid bending. The rod 1 must be aligned parallel to the blades and the scissor table. In order to cut the width, on the rod 1, in the required amount, the spring-loaded head 6 of the return grippers 3 is inserted so that, in the non-working position, the opening for inserting the arm 9 of the sight 10 is inclined upwards. The size of the slant is limited by the protrusion of the head 6, which is supported by the scissor guard. The gripping of the gripper 3 provides a radial spring 7 of which one end is anchored in the head 6 and the other one inserted in the groove 12 of the guide rod 1. The arm 9 of the sight 10 is pushed into the head 6 with the opening and secured against sliding out by a screw 8. a template holder 4 is attached perpendicularly to the knives. In the first longitudinal shear, the reversing grippers 3 are folded, and the evaporator is set according to the base channel below the grippers 10 of the grippers.

3. After grinding, the gripper 3 is released and the evaporator is reversed and directed to the mark on the scissor table, which indicates the evaporator width, the second shear is performed.

At the first transverse shear, the evaporator moves under the template 5 to the edge of the scissors side trim, trimmed by the edge and set below the tolerance tolerance fields of the template

5. After alignment, the first transverse cut is made. Then the evaporator is overturned, moved to the scissor side bar, focused on the mark that indicates the evaporator length, and the last evaporator cut - second cross cut. The attachment according to the invention can be used for various types of sheet shears. the aiming arm (9) and the hole for one end of the radial spring (7), the other end of which is held in the groove (12) of the guide bar (1) and the holder (4) is mounted on the extended bar (13) mounted perpendicular to the knife ) of the template (5). 1 drawing 217668

FIG. 1

FIG. 2