CN202097300U - Nesting mold for expansion joints - Google Patents

Abstract

A nesting mold for expansion joints comprises a mold housing and a core, the inner edge of the core is provided with a compression molding surface for an expansion joint, the outer edge of the core is mounted on the inner edge of the housing through a mechanical fitting surface, and the mechanical fitting surface, namely the mounting section adopts stepped fitting; expansion joints with the same nominal diameter are matched with the same mold housing, the core with compression molding surfaces with a plurality of specification parameters is matched with the mold housing, and the compression molding surfaces of the core correspond to expansion joints with a plurality of specification parameters. Moreover, hoisting screw holes are respectively evenly arranged on the non-mechanical fitting surface and the non-compression molding surface of the mold housing and the core. In the utility model, the manufacturing cost of the mold is saved, expansion joints are mostly produced individually or in small batches, and the reduction of the mold cost is the important part of the saving of the production cost. The mold can adopt the unified mold housing to mold expansion joints with the same nominal diameter and different specification parameters by way of compression as long as the core of the mold is produced in a necessary way.

Description

The expansion joint nesting mould

Technical field:

The utility model relates to the moulding of expansion joint industry with nested high-performance mould.

Background technology:

Mould is to utilize its given shape to go moulding to have the instrument of certain shape and size goods.Mould has a wide range of applications in various materials processing industry.Nowadays the forming die structure form used of expansion joint industry is varied, for example monoblock type, dock, syntype or the like, but all there is its shortcoming and defect in every kind of expansion joint mould.The monoblock type mould, the mould internal diameter is a definite value, range of application is restricted, and can only be used for the compression moulding of the expansion joint of certain certain size; The dock mould receives the restriction of connector bonding strength, can only satisfy the compression moulding of the expansion joint in a certain pressure limit; The syntype mould receives the restriction of matched moulds boss, and the expansion joint moulding wave height upper limit is limited, pitch of waves lower limit is limited, can only be used for the compression moulding of the expansion joint in a certain wave height (h), the pitch of waves (w) scope.More than several kinds of die form in use all have certain limiting factor, so in the expansion joint production process, need a large amount of mould of preparation, improved production cost greatly to satisfy different processing requests.

The utility model content:

The purpose of the utility model is to propose a kind of expansion joint nesting mould; Make a general expansion joint mould, reduce the restricted gender of this mould as far as possible, improve its economic performance for the expansion joint moulding; The reduction die cost of maximum possible; This novel nesting mould is simple to operate, applying flexible, and be convenient to installation and removal.

The technical scheme of the utility model: expansion joint nesting mould; Nesting mould is made up of overcoat and core; The inner edge preparation of core has the die mould profile of expansion joint, and the outer rim of core is through mechanical engagement face and the assembling of overcoat inner edge, and the mechanical engagement face adopts the stepped ramp type cross section to cooperate; The expansion joint of same nominal diameter cooperates with a die coat, and the core that is provided with some specifications parameter die mould profiles cooperates with it, the expansion joint of the corresponding some specifications parameters of core die mould profile.The mechanical engagement face also can adopt the tongue and groove assembly structure.

The expansion joint of the same nominal diameter of the utility model is used with a die coat, is provided with some cores and is used with it, the expansion joint of the corresponding some specifications parameters of core die mould profile.Die coat and core are evenly arranged several lifting screws respectively on its on-mechanical mating surface and non-die mould profile.

The beneficial effect of the utility model: this nested high-performance mould biggest advantage just is to have saved greatly the manufacturing cost of mould, and mostly expansion joint is single-piece or small lot batch manufacture, and the reduction of die cost will be an important part that saves production cost.This mould adopts unified Standard Module overcoat, for the compression moulding of same nominal diameter different size parameter expansion joint, only needs that the mould core is done necessary manufacturing and gets final product, thereby saved the mould manufacturing expense.

The nested high-performance mould of this expansion joint is applicable to the moulding of the expansion joint of different size wall thickness, different wave height h, different pitch of waves w, different pressures grade; Broken away from the past moulds such as monoblock type, interconnection system, syntype for the restriction of expansion joint moulding, rationalized more, generalization.The nested high-performance mould of the utility model expansion joint adopts standardization, and production is carried out on science and Methodistic basis, has shortened the production cycle greatly, enhances productivity, and generalization is strong.

Description of drawings:

Fig. 1: be the nested high-new ability mould core sketch map of the utility model;

Fig. 2: be the nested high-performance die coat of the utility model sketch map;

Fig. 3: be the nested high-performance mould assembling of the utility model, die sinking sketch map;

Fig. 4: be the utility model list ripple expansion joint shaping schematic view.

Lifting screw 1, assembling mating surface 2, moulding profile 3, overcoat 4, core 5, expansion joint 6.

The specific embodiment:

1. the moulding R arc that calculates the mould core according to the waveform size and the forming materials rebound coefficient of GB 16749-1997 " pressure vessel corrugated-type expansion joint " standard expansion joint, thus confirm the thickness δ of mould; Confirm the maximum wave height hmax of expansion joint according to the percentage elongation of material, thereby confirm the minimum widith Bmin of mould core.The outside at core processes fitting recess, and assembling mating surface and mold core mold forming profile will guarantee higher surface accuracy, referring to shown in Figure 1.

2. according to the expansion joint of a certain nominal diameter maximum pressure when the moulding; When calculating this expansion joint moulding to the maximum force Fmax of mould; Check the smallest cross-section area Amin of die coat when carrying this active force through this active force, finally confirm the size of this die coat according to welding coefficient, moulding coefficient and material property, the inboard of its external sleeve processes fitting recess; Guarantee the surface roughness of its assembling mating surface simultaneously, referring to shown in Figure 2.

3. on the on-mechanical mating surface of die coat and core and non-die mould profile, evenly arrange several lifting screws respectively.Lift die coat and core during cooperation respectively, with the die coat location, core is along assembling mating surface and overcoat assembling; During die sinking, the lifting hanging bolt is along steadily lifting by crane perpendicular to the die end in-plane, referring to shown in Figure 3.

Claims (1)

1. the expansion joint nesting mould is characterized in that being made up of die coat and core, and the inner edge preparation of core has the die mould profile of expansion joint, and the outer rim of core is through the inner edge assembling of mechanical engagement face and overcoat, and the mechanical engagement face adopts the stepped ramp type cross section to cooperate; The expansion joint of same nominal diameter cooperates with a die coat, and the core that is provided with some specifications parameter die mould profiles cooperates with it, the expansion joint of the corresponding some specifications parameters of core die mould profile.

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