CN2838921Y

CN2838921Y - U-shaped hollow tube mould

Info

Publication number: CN2838921Y
Application number: CN 200520130484
Authority: CN
Inventors: 陈八仔
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-11-08
Filing date: 2005-11-08
Publication date: 2006-11-22
Anticipated expiration: 2015-11-08

Abstract

The utility model discloses a kind of U-shaped hollow tube mould, comprise the front mould and the back mould that connect by alignment pin, offer the U-shaped die cavity on the binding face of front mould and back mould, back mould one side is provided with hydraulic jack, be provided with the gear that the rotating shaft and the U-shaped die cavity center of circle coincide bottom the back mould, the push rod of hydraulic jack is provided with the tooth bar that is meshed with this gear, gear face is connected with the core rod that matches with die cavity by cantilever, tooth bar on the hydraulic jack push rod is realized loosing core by the gear driven core rod turnover die cavity that moves in a circle.The utility model is simple and reasonable, easy and simple to handle, operate steadily, can produce the high-quality U-bend of the even and inside and outside smooth unanimity of wall thickness, this mould also has the production efficiency height, outstanding beneficial effect such as is convenient to assemble, is easy to make, with low cost in addition, has broad application prospects.

Description

U-shaped hollow tube mould

Technical field

The utility model relates to a kind of mould that is used to produce plastic rubber winding pipe, a kind of more precisely novel die structure that is used to produce U-shaped hollow plastic rubber winding pipe.

Background technology

The purposes of plastic cement pipe is very extensive, can be used as electric pipe, water drinking tube, drainpipe or the like, in most of the cases all can realize of the linking of each pipeline with plastic rubber winding pipe at the turning, doing the deodorizing sealing with U type pipe in drainpipe uses, not only guarantee the unification and the overall performance of outward appearance, more can adapt to people's environmentally-friendly sanitary requirement, the preparation method of existing plastic rubber winding pipe has multiple, one of them is exactly to be that two orthogonal core rods are placed respectively in the upper and lower mould die cavity during fabrication, behind injection molded, pull out core rod again, promptly get required bend pipe after taking mould apart, though this bend pipe outer wall smoother, but inwall is owing to the burr of the residual protrusion of contact meeting of two core rods, and more seriously core rod very easily destroys glue spare outward appearance in the process that breaks away from glue spare, thereby influences its serviceability.Also have in addition straight tube is bent to the method for bend pipe and Re Sha, glycerine tubulation method through heating, the bend pipe that the former makes causes the breakage of tube wall easily, and only be suitable for processing the bigger pipeline of diameter, latter's equipment needed thereby is numerous and diverse huge, operation is complicated, consumable quantity is big, curring time is long, and cost of manufacture is higher.At above-mentioned situation, Chinese patent 92223135.4 just discloses a kind of " plastic rubber winding pipe mould ", this mould is done the action of loosing core by the arc core rod that the symmetrically arranged pull handle of cylinder pressure push rod end, pivoted arm drive pivot joint, though can make the plastic rubber winding pipe that inner wall smooth does not evenly have burr fast and in large quantities, but be confined to make the bend pipe of quadrant, and still there is baroque defective, is not easy to apply.

The utility model content

At the deficiency that prior art exists, the purpose of this utility model is to provide a kind of simple in structure, easy to use, U-shaped hollow tube mould of operating steadily.Even, the smooth no burr of inside and outside wall of U-bend wall thickness that this U-shaped hollow tube mould is made can satisfy the instructions for use of every profession and trade (particularly family and life with thin bore drainpipe) well.

For achieving the above object, the technical solution adopted in the utility model is: a kind of U-shaped hollow tube mould, comprise the front mould and the back mould that connect by alignment pin, offer the U-shaped die cavity on the binding face of front mould and back mould, back mould one side is provided with hydraulic jack, be provided with the gear that the rotating shaft and the U-shaped die cavity center of circle coincide bottom the back mould, the push rod of hydraulic jack is provided with the tooth bar that is meshed with this gear, gear face is connected with the core rod that matches with die cavity by cantilever, tooth bar on the hydraulic jack push rod is realized loosing core by the gear driven core rod turnover die cavity that moves in a circle.

The end that described core rod is positioned at die cavity takes the shape of the letter U, and an outwardly directed end is straight core, and straight core end links to each other with gear by cantilever.

Described core rod comprises main core and secondary core, the end that main core is positioned at die cavity takes the shape of the letter U, an outwardly directed end is straight core, straight core end links to each other with gear by cantilever, be set with a sliding part on it, be respectively arranged with on this sliding part side relative and corresponding annular secondary core of die cavity two-port and the secondary core of little segmental arc with die cavity, the annular secondary core retainer plate is on straight core, sliding part slidably reciprocates along straight core and main core and secondary core are matched or breaks away from, main core and the secondary core complete U pattern core that back composition and die cavity match that coincide.

Described sliding part is by Angle Pin and back mould interlock, and the sliding part two ends offer the guide pillar hole of inclination respectively, and Angle Pin one end is fixed on the mould of back, and the other end stretches in the guide pillar hole.

Outward-dipping 45 °～65 ° of described Angle Pins along the sliding part glide direction.

The root of the secondary core of described little segmental arc is cylindrical, and the top is circular arc.

The front end of the secondary core of described little segmental arc and main core end all are the curved surface shape or roll over planarly, and both match, and can coincide into whole core.

The profile of described front mould and back mould and the rotary motion trace of core rod outer end are suitable, are rotary motion trace cutting shape, and the indentation certain distance.

Described front mould and back mould are square, and the one angle is inclined plane shape or the arc surfaced of avoiding rotating with core rod interference.

Be provided with the recess that matches with sliding part between described front mould and the back mould.

Described hydraulic jack is fixed on mould side, back by bearing.

Operation principle of the present utility model is: elder generation's primer fluid compressing cylinder during use, pass through tooth bar, gear drive drives main core and rotates in the front mould die cavity, in the back mould that closes, drive the sliding part motion then by batter post, secondary core and main core on the sliding part are matched, before treating, after back mould is fitted fully, core rod also makes up and finishes, this moment, core rod and die cavity formed complete filling space (being the bend pipe wall), behind the injection molded, in the die sinking process, back mould transfixion, front mould drives sliding part by batter post and outwards slides, and secondary core and main core are separated, then the primer fluid compressing cylinder make main core and on sliding part rotate together, main core is extracted out from bend pipe, got product.The utility model is simple and reasonable, easy and simple to handle, operate steadily, can produce the high-quality U-bend of the even and inside and outside smooth unanimity of wall thickness, this mould also has the production efficiency height, outstanding beneficial effect such as is convenient to assemble, is easy to make, with low cost in addition.

Description of drawings

Fig. 1 be when taking off front mould after the view on the whole of mould;

A when Fig. 2 covers front mould for Fig. 1 is to schematic diagram;

Fig. 3 is die sinking of the present utility model, the process of loosing core schematic diagram.

Specific embodiment

Below in conjunction with accompanying drawing the utility model is described in further detail.

Description of reference numerals:

1---back mould 2---front mould

3---guide pillar hole 4---die cavity

5---hydraulic jack 6---gear

The main core of 7---tooth bars 8---

9---sliding part 10---annular secondary core

11---the secondary core 12 of little segmental arc---guide pillar hole

As Fig. 1, U-shaped hollow tube mould shown in Figure 2, all offer guide pillar hole 3 on back mould 1 and the front mould 2,3 guide pillars that corresponding with it is on the front mould 2, connect the location by guide pillar between the two, front mould 2 is provided with the U-shaped die cavity 4 that opening makes progress with the binding face of back mould 1, the bearing that passes on left of back mould 1 is equipped with hydraulic jack 5, the bottom of back mould 1 is provided with the gear 6 that the center of circle of rotating shaft and U-shaped die cavity 4 coincides, the push rod of hydraulic jack 5 is provided with the tooth bar 7 that is meshed with this gear, gear 6 end faces are connected with main core 8 by cantilever, the end that main core 8 is positioned at die cavity 4 takes the shape of the letter U, an outwardly directed end is straight core, straight core end links to each other with gear by cantilever, be set with a sliding part 9 on the straight core, be respectively arranged with and corresponding annular secondary core 10 of die cavity two-port and the secondary core 11 of little segmental arc on the relative side of sliding part 9 and die cavity 4, annular secondary core 10 is enclosed within on the straight core, the root of the secondary core 11 of little segmental arc is cylindrical, the top is circular arc, the front end of the secondary core 11 of little segmental arc and the end of main core 8 all are the curved surface shape, sliding part 9 slidably reciprocates along straight core and main core 8 and two secondary cores are matched or breaks away from, main core 8 is formed the complete core rod that matches with die cavity 4 after coincideing with the secondary core in two ends, be provided with the recess that matches with sliding part 9 between back mould 1 and the front mould 2, sliding part 9 is by Angle Pin and front mould 2 interlocks, sliding part 9 two ends offer the guide pillar hole 12 of inclination respectively, outward-dipping 45 °～65 ° of Angle Pins along the sliding part glide direction, Angle Pin one end is fixed on the front mould 2, the other end stretches in the guide pillar hole 12, like this, in the die sinking process, along with preceding, the increase of back intermode distance, Angle Pin can drive sliding part 9 and outwards move, secondary core and main core are separated, extract out from the U-bend two ends, after secondary core breaks away from, tooth bar on hydraulic jack 5 push rods moves in a circle by gear driven master core and finishes the last action of loosing core, because two secondary cores are extracted out from bend pipe, therefore main core only need rotate can finish about about 90 degree and loose core.Front mould 2 and back mould 1 are square, and core rod rotates a jiao of approach and machines away a part, interfere with the back mould when avoiding core rod to rotate.

The utility model is not limited to above-mentioned preferred forms; anyone can draw other various forms of products under enlightenment of the present invention; for example the rotary motion trace of the profile of front mould and back mould and core rod outer end is suitable; be rotary motion trace cutting shape; and indentation certain distance; no matter but on its shape or structure, do any variation; everyly drive the U-bend mould that core rod moves in a circle and looses core, all drop within the protection domain of the present utility model by oil cylinder, tooth bar, gear drive structure and cantilever.

Claims

1, a kind of U-shaped hollow tube mould, comprise the front mould and the back mould that connect by alignment pin, it is characterized in that, offer the U-shaped die cavity on the binding face of front mould and back mould, back mould one side is provided with hydraulic jack, be provided with the gear that the rotating shaft and the U-shaped die cavity center of circle coincide bottom the back mould, the push rod of hydraulic jack is provided with the tooth bar that is meshed with this gear, gear face is connected with the core rod that matches with die cavity by cantilever, tooth bar on the hydraulic jack push rod is realized loosing core by the gear driven core rod turnover die cavity that moves in a circle.

2, U-shaped hollow tube mould according to claim 1 is characterized in that, the end that described core rod is positioned at die cavity takes the shape of the letter U, and an outwardly directed end is straight core, and straight core end links to each other with gear by cantilever.

3, U-shaped hollow tube mould according to claim 1, it is characterized in that, described core rod comprises main core and secondary core, the end that main core is positioned at die cavity takes the shape of the letter U, an outwardly directed end is straight core, straight core end links to each other with gear by cantilever, be set with a sliding part on it, be respectively arranged with on this sliding part side relative and corresponding annular secondary core of die cavity two-port and the secondary core of little segmental arc with die cavity, the annular secondary core retainer plate is on straight core, sliding part slidably reciprocates along straight core and main core and secondary core are matched or breaks away from, main core and the secondary core complete core rod that back composition and die cavity match that coincide.

4, U-shaped hollow tube mould according to claim 3 is characterized in that, the front end of the secondary core of described little segmental arc and main core end all are the curved surface shape or roll over planarly, and both match, and can coincide into whole core.

5, U-shaped hollow tube mould according to claim 3 is characterized in that, described sliding part is by Angle Pin and back mould interlock, and the sliding part two ends offer the guide pillar hole of inclination respectively, and Angle Pin one end is fixed on the front mould, and the other end stretches in the guide pillar hole.

6, U-shaped hollow tube mould according to claim 5 is characterized in that, outward-dipping 45 °～65 ° along the sliding part glide direction of described Angle Pins.

7, U-shaped hollow tube mould according to claim 3 is characterized in that, the root of the secondary core of described little segmental arc is cylindrical, and the top is circular arc.

According to the arbitrary described U-shaped hollow tube mould of claim 1 to 7, it is characterized in that 8, the profile of described front mould and back mould and the rotary motion trace of core rod outer end are suitable, are rotary motion trace cutting shape, and the indentation certain distance.

According to the arbitrary described U-shaped hollow tube mould of claim 1 to 7, it is characterized in that 9, described front mould and back mould are square, the one angle is inclined plane shape or the arc surfaced of avoiding rotating with core rod interference.

10, according to the arbitrary described U-shaped hollow tube mould of claim 1 to 7, it is characterized in that, be provided with the T type recess that matches with sliding part between described front mould and the back mould.