CN103786339A

CN103786339A - Improved cylinder curling machine

Info

Publication number: CN103786339A
Application number: CN201410013326.8A
Authority: CN
Inventors: 严立清
Original assignee: ANQING LIXIANG INDUSTRY & TRADE Co Ltd
Current assignee: ANQING LIXIANG INDUSTRY & TRADE Co Ltd
Priority date: 2014-01-03
Filing date: 2014-01-03
Publication date: 2014-05-14

Abstract

The invention discloses an improved cylinder curling machine which comprises an upper mould and a lower mould, wherein an annular groove is formed in the upper surface of the lower mould. The improved cylinder curling machine is characterized in that the annular groove comprises a half U-shaped groove I and a U-shaped groove II; the half U-shaped groove I is upwards opened, and the U-shaped groove II is horizontally opened; the bottom of the half U-shaped groove I is connected with the lower side wall of the U-shaped groove II in a smooth transition way. According to the improved cylinder curling machine, PVC (Polyvinyl Chloride) of a pipe socket can be easily curled when bearing very small upper mould pressure through a unique rabbet design; the time and labor conservation and the low scrap rate are achieved; a rabbet is in a U-shaped groove structure which is horizontally opened when ascending from a bottom, and the mouth part of a PVC product can be overturned and then attached to the inner wall of the PVC product when the bottom of the rabbet is very large, so that the curling is successful.

Description

A kind of improved cylinder edge former

Technical field

The present invention relates to a kind of cylinder edge former.

Background technology

Conventionally in the time of PVC goods crimping, all need patrix to give PVC goods certain power pressing down, so that the oral area of PVC goods is curling along the notch shape of mould.Utilize common U-shaped groove crimping, PVC goods oral area is along notch during to bottom, because common U-shaped trench bottom radian is very little, and the power that needs very large patrix to press down, PVC goods oral area can be along the notch crimping that overturns.If the radian of increase notch bottom, the power that PVC goods can not need very large patrix to press down really, just its oral area can overturn along notch, but, because radian is excessive, after the upset of PVC goods oral area, can not fit to its mouth inner wall, thereby crimping can not be successful.

PVC goods on market have the horn mouth PVC goods of columniform straight tube PVC goods and circular platform type, cylinder edge former in the market can be good at solving the crimping moulding of straight tube PVC goods, this mainly has benefited from straight tube PVC goods can bear the power that larger patrix presses down, but, if by the moulding of bell-mouthed PVC goods crimping, there is very large difficulty, because there is certain gradient in bell-mouthed PVC goods, in the power pressing down at patrix is slightly large, bell-mouthed PVC goods can bend, thereby cause oral area stressed very little, like this in the time of crimping, oral area is difficult to along the smooth crimping of common U-lag.

Summary of the invention

The object of this invention is to provide a kind of cylinder edge former that is applicable to the moulding of bell-mouthed PVC goods crimping.

For achieving the above object, the present invention is by the following technical solutions: a kind of improved cylinder edge former, comprise mold, bed die, described bed die upper surface is provided with an annular groove, it is characterized in that, described annular groove is made up of the U-shaped groove two of opening up half U type groove one and opening level, and described half U type groove one bottom is connected with the lower wall rounding off of U-shaped groove two.

Technical characterstic of the present invention is also: the sidewall of described half U type groove one and U-shaped groove two is arcwall face.

Unique notch design of the present invention, can make bell-mouthed PVC bear light crimping under very little upper molding pressure, time saving and energy saving, percent defective is low, and notch is in the time rising from bottom, there is the U-shaped groove structure of an opening level, can in the time that notch bottom radian is very large, make can fit to its inwall after the upset of PVC goods oral area, thus crimping success.

Accompanying drawing explanation

Fig. 1 is structural representation of the present invention.

Fig. 2 is bed die enlarged diagram of the present invention.

Fig. 3 is notch cutaway view of the present invention.

Fig. 4 is the large figure of sending out of notch cutaway view of the present invention.

Fig. 5 is straight tube PVC goods schematic diagrames.

Fig. 6 is horn mouth PVC goods schematic diagrames.

Fig. 7 is horn mouth PVC goods bending sketch maps while utilizing common crimping machine notch crimping.

Fig. 8 is the schematic diagram that bending does not occur while utilizing crimping machine notch crimping of the present invention horn mouth PVC goods.

Fig. 9 is not cutaway views when crimping of horn mouth PVC goods.

Figure 10 is the cutaway view after horn mouth PVC goods crimping.

Figure 11 is the schematic diagram of horn mouth PVC goods oral area along notch upset.

Figure 12 is adjacent to the schematic diagram after mouth inner wall after the upset of horn mouth PVC goods oral area again after U-shaped guiding.

Number in the figure: the lower wall of 1 bed die, 2 annular grooves, 3 molds, 4 horn mouth PVC goods, 5 half U type grooves one, 6U type groove two, 51 half U type groove one bottoms, 61U type groove two.

The specific embodiment

Below in conjunction with embodiment, the present invention is further detailed explanation:

Embodiment 1: as depicted in figs. 1 and 2, a kind of cylinder edge former, comprises mold 3, bed die 1, and the upper surface of described bed die is provided with an annular groove 2.

As shown in Figure 3 and Figure 4, described annular groove 2 is made up of the U-shaped groove 26 of opening up half U type groove 1 and opening level, and described half U type groove one bottom 51 is connected with lower wall 61 rounding ofves of U-shaped groove two.

As shown in Figure 7, existing common crimping machine notch, for U-shaped.The crimping machine of this kind of notch can well be worked when by straight tube PVC goods crimping as shown in Figure 5.This is mainly because straight tube PVC goods can bear the pressure of larger patrix 3 and not bend.In the time that patrix presses down, the oral area of straight tube PVC goods can be adjacent to mouth inner wall after common U-shaped notch upset, thus smooth crimping.But, if horn mouth PVC goods are as shown in Figure 6 carried out to crimping, be easy to failure, this is mainly because horn mouth PVC goods exist certain gradient, patrix down force pressure is slightly large, bell-mouthed PVC goods just can bending as Fig. 7, and the oral area of bell-mouthed like this PVC goods is difficult to stressed, thereby in common U-shaped notch, be difficult to crimping success.

So, as shown in Figure 3, the notch bottom radian that the present invention adopts is very large, PVC goods oral area only needs the power that less patrix presses down just can overturn along notch, like this, as shown in Figure 8, bell-mouthed PVC goods just can not bend, and notch is in the time rising from bottom, has the such structure of U-shaped groove 26 of an opening level, can make after the upset of PVC goods oral area, along the guiding of this structure curling PVC goods mouth inner wall that is adjacent to smoothly, thereby after guaranteeing that bottom radian increases, still crimping smoothly, and the limit being rolled into is round again, effect is good again.

When practical operation, by bell-mouthed PVC goods mouth down as shown in Figure 9, be put into preheating on preheating device.Afterwards bell-mouthed PVC goods are put on the notch of die with edge-folded on preheating 3 paper money clocks.Workman can be put into preheating on preheating device by the product that there is no crimping simultaneously.Now, bell-mouthed PVC goods oral area contacts with the half U type groove 1 of notch, press crimping machine switch, now patrix presses against the bottom of horn mouth PVC goods under rapidly, bed die is automatic rotating under the drive of motor, patrix slowly presses down, then as shown in figure 11, bell-mouthed PVC goods oral area along the half U type groove one of notch down to half U type groove one bottom, then rounding off is to the lower wall of U-shaped groove two, success is overturn, and then curling along the guiding of this U-shaped groove two, be adjacent to the inwall of PVC goods oral area, as shown in figure 12, crimping success, form the horn mouth PVC goods after crimping as shown in figure 10.Pressing down the crimping time was 4 seconds, within one minute, can roll up 15.Efficiency has improved nearly four times.

Claims

1. an improved cylinder edge former, comprise mold (3), bed die (1), the upper surface of described bed die is provided with an annular groove (2), it is characterized in that, described annular groove (2) is made up of the U-shaped groove two (6) of opening up half U type groove one (5) and opening level, and described half U type groove one bottom (51) is connected with lower wall (61) rounding off of U-shaped groove two.

2. the improved cylinder edge former of one according to claim 1, is characterized in that, the sidewall of described half U type groove one (5) and U-shaped groove two (6) is arcwall face.