CN202464296U

CN202464296U - Hinge for folding container

Info

Publication number: CN202464296U
Application number: CN2012200381692U
Authority: CN
Inventors: 袁洪伟; 庞满华; 倪毛根
Original assignee: Shengshi Container Technology Research and Development (Shanghai) Co Ltd
Current assignee: Shanghai Huanyu Logistics Technology Co Ltd
Priority date: 2011-10-19
Filing date: 2012-02-07
Publication date: 2012-10-03
Anticipated expiration: 2022-02-07
Also published as: CN103057870A

Abstract

The utility model relates to a hinge for a folding container. The hinge comprises an internal hinge integrally cast by using a cast steel material and an external hinge integrally cast by using the cast steel material, wherein the internal hinge is arranged in the external hinge and matched with the external hinge to use; the internal hinge and the external hinge are respectively provided with a pin shaft hole; and a pin shaft is connected with the internal hinge and the external hinge after passing through the pin shaft holes. Through improving the manufacturing material, the process and the structure of the hinge structure of the folding container, the manufacturing difficulty of the hinge of the folding container is lowered and the weight of a product is reduced on the premise of ensuring the structural strength, so that the aims of reducing the cost of the product, improving the quality of the product and optimizing the structure of the product are achieved..

Description

A kind of hinge for folding box

Technical field

The utility model relates to Collapsible container, specially refers to the hinge of using on the folding carton.

Background technology

Collapsible container is one of container type relatively more commonly used at present.The hinge of Foldable container, the inner hinge 2 that comprises the outer hinge 1 that is fixed on the chassis of container 3, is fixed together with corner post 4 or end wall, rotating shaft and stop pin that inner hinge and outer hinge are hubbed on are like Fig. 1.Inner hinge 2 opens transition back and forth between the station in a folding station and, and stop pin is positioned inner hinge 2 for open station, and said outer hinge 1 comprises base angle part that is positioned at the bottom and the outer hinge bodies that is connected one with it.Said base angle part is installed with an areal of support, and said inner hinge is installed with one and is located face, and areal of support and be located and be furnished with a slice pad at least between the face, pad are at inner hinge that pad is being located between face and the areal of support when opening station.

The hinge arrangement of above-mentioned existing Collapsible container (hereinafter to be referred as conventional structure) adopts low-alloy high-strength steel plate Q345B steel plate to cut apart back assembly welding production structure always.The manufacturing process of existing folding carton hinge conventional structure: steel plate----cut apart blanking----assembly welding----machinework inner hinge, outer hinge fitted shaft pin-and-hole.Its weak point is that raw material availability is low, operation is many, the production quality control difficulty, and productive costs is high.

In the use of Collapsible container upper hinge; How under the situation of the hinge arrangement intensity that guarantees folding carton; Reducing Collapsible container hinge manufacture difficulty and cost, make production efficiency and product design to improve the Collapsible container hinge, is present industry problem demanding prompt solution.

The utility model content

The purpose of the utility model is to overcome folding carton hinge manufacturing process complicacy in the above-mentioned prior art, and in use occurs the deficiency of welded seam bursh easily, and a kind of folding carton that adopts new hinge arrangement form is provided.Hinge on the utility model folding carton needs intensity greatly to satisfy user demand, and manufacture difficulty is low to reduce production costs, and enhances productivity.

In order to reach the foregoing invention purpose, the technical scheme that the utility model provides is following:

A kind of hinge for folding box; This hinge includes inner hinge that is formed by the cast steel material inblock cast and the outer hinge that is formed by the cast steel material inblock cast; Said inner hinge places in the described outer hinge to be used; Be equipped with pin shaft hole on described inner hinge and the outer hinge, a bearing pin passes described pin shaft hole and connects inner hinge and outer hinge.

In the hinge for folding box of the utility model, described cast steel material is ZG340-550H, or is SCW55O.

In the hinge for folding box of the utility model, pass pin shaft hole through bearing pin between described inner hinge and the outer hinge and connect, the blank bottom outlet of said pin shaft hole forms via casting, or machinework forms.

In the hinge for folding box of the utility model, at least one is provided with the loss of weight groove described inner hinge and outer hinge.

In the hinge for folding box of the utility model, the loss of weight groove on the said inner hinge is located at the both sides of inner hinge symmetrically, and the loss of weight groove of every side is at least one.

In the hinge for folding box of the utility model, described outer hinge bottom is provided with lightening hole, is provided with between the two side of outer hinge to strengthen the U template.

In the hinge for folding box of the utility model, described outer hinge is provided with pin shaft hole, and the pin shaft hole position inboard in the two side is provided with boss, and the machinework on said boss of described pin shaft hole forms.

A kind of method of making above-mentioned hinge for folding box comprises following process in this method:

Cast steel material---casting---heat treatment---machinework inner hinge, outer hinge fitting pin axis hole.In the casting link, the tapping temperature of molten steel >=1600 ℃.Include normalizing and tempering in the heat treatment link, wherein normalizing is warming up to 640 ± 30 ℃ earlier, is incubated 1--4 hour, and then is warming up to 930 ± 30 ℃, is incubated 2--6 hour, disperses air cooling; Tempering is warming up to 660 ± 30 ℃, is incubated 2---6 hour, natural cooling.

Based on technique scheme, the hinge for folding box of the utility model compared with prior art has following technological merit:

1. the utility model is through the manufactured materials and the structure of the hinge arrangement of improvement Collapsible container; Under the situation that guarantees structural strength; Reduce the manufacture difficulty of Collapsible container hinge, to reach the purpose that reduces cost of product, improves the quality of products, optimizes product structure.

2. the hinge of the utility model casting its inner hinge of new construction and outer hinge are through adopting integral casting process; Because structural strength and rigidity are more excellent; Can under the prerequisite that guarantees structural strength, can suitably increase the loss of weight groove, concerned process steps or part are merged, alleviate product weight.

Description of drawings

Fig. 1 is folding carton and a hinge position scheme drawing in the prior art.

Fig. 2 is the fit structure scheme drawing of inner hinge and outer hinge on the folding carton.

Fig. 3 is the structural representation of inner hinge on the folding carton of the utility model.

Fig. 4 is the outer hinge arrangement scheme drawing that is applied in the utility model on the 20` folding carton.

Fig. 5 is the outer hinge arrangement scheme drawing that is applied in the utility model on the 40` folding carton.

The specific embodiment

Below we combine accompanying drawing and concrete embodiment to come the folding carton hinge of the utility model done further in detail to set forth; In the hope of structure type and the working method of understanding the utility model more cheer and brightly, but can not limit the protection domain of the utility model with this.

The hinge for folding box of the utility model changes the method that steel plate in original hinge manufacturing process is cut apart welding, all utilizes the cast steel material inblock cast to form on inner hinge that is used and outer hinge.The concise and to the point machinework of carrying out part after casting is accomplished again gets final product place in operation.

When the foundry production of actual hinge, the hinge of casting the utility model is employed to be low-alloy high-strength welded structure steel casting material.The trade mark of cast steel material can be chosen as ZG340-550H, and the operative norm of this cast steel material is GB/T 7659-2010, is that a kind of welded structure is used steel casting.The cast steel material here also can be chosen as SCW550, and the standard of its execution is JIS G 5102-1991.

In the hinge for folding box of the utility model, as shown in Figure 2, be connected with taper pin 5 and combine through selling 6 directly to households between inner hinge 2 and the outer hinge 1.Pass cooresponding pin shaft hole respectively with taper pin 5 and be connected through selling 6 directly to households between described inner hinge and the outer hinge, wherein sell 6 correspondences directly to households and be through at and sell directly to households in the hole, taper pin then is arranged in the taper pin-hole.According to the cast-in-block principle, the blank bottom outlet of the pin shaft hole on inner hinge 2 and the outer hinge 1 forms via casting, or machinework forms.

In the hinge for folding box of the utility model, want the casting of just being convenient to simple in structure as the hinge of Casting Parts.Simultaneously, in order to alleviate the overall weight of Casting Parts, on inner hinge 2, be provided with loss of weight groove 7, can certainly be provided with a plurality of loss of weight grooves by inner hinge 2, its purpose all is identical.In hinge steel casting structure; Inner hinge as the hinge component part all adopts cast-in-block technology to process with outer hinge, because structural strength and rigidity are more excellent, and can be under the prerequisite that guarantees structural strength; Can suitably increase loss of weight groove or lightening hole, alleviate product weight.Cast in the instance for one therein, the loss of weight groove 7 on the inner hinge 2 is located at the both sides of inner hinge symmetrically, and the loss of weight groove 7 of every side is at least one, and its concrete structure is as shown in Figure 3.

In the hinge for folding box of the utility model, in order to alleviate the overall weight of Casting Parts, the lightening hole 8 that is provided with of hinge bottom outside.In order to increase the intensity of casting hinge, hinged base has been designed the U type connecting panel 9 of an interior outer panel of connection outside, and this U type connecting panel is as the part of outer hinge, and the various piece of outer hinge adopts the cast-in-block mode to make.In addition, also be provided with pin shaft hole 11 outside on the hinge, pin shaft hole 11 positions inboard in the two side are provided with boss 12, and the machinework on said boss 12 of described pin shaft hole 11 forms.Fig. 4 is the concrete structure of the outer hinge used on the 20` folding carton, and Fig. 5 then is the concrete structure of the outer hinge used on the 40` folding carton.The two all is to accomplish through inblock cast, and it has all comprised the lightening hole design, and difference is employed folding carton sized, but all can embody the characteristic of the utility model.

Make the method for above-mentioned hinge for folding box, roughly include following process in this method:

Cast steel material---casting---heat treatment---machinework inner hinge, outer hinge fitting pin axis hole.

When the casting inner hinge, the label that above-mentioned cast steel material is selected for use is ZG340-550H, and the operative norm of this cast steel material is GB/T 7659-2010.In the casting link, the tapping temperature of molten steel >=1600 ℃ could guarantee that so the inside and outside hinge that as cast comes out is up-to-standard.

For inner hinge and outer hinge that casting forms, it is an important link that cast blank is heat-treated, and purpose is in order to eliminate the THE STRUCTURE OF CASTINGS defective, to obtain good comprehensive mechanical properties.

Heat treatment process to inner hinge and outer hinge includes normalizing and two processes of tempering.Wherein, the purpose of normalizing is to improve the mechanical property of foundry goods, improves machinability, and crystal grain thinning is eliminated tissue defects.Hinge for folding box of the present invention is warming up to 640 ± 30 ℃ earlier when normalizing, be incubated 1--4 hour, and then be warming up to 930 ± 30 ℃, is incubated 2--6 hour, at last spray is disperseed air cooling.

The purpose of tempering is to reduce the hardness of foundry goods after the normalizing, stablizes foundry goods in-to-in tissue, makes foundry goods can obtain good comprehensive mechanical properties.Drawback temperature is set at 660 ℃, but the temperature of tempering can float in 30 ℃ the scope up and down, and in order to guarantee thermal treatment quality, tempering insulation time was controlled in time period of 2 to 6 hours, at last foundry goods was naturally cooled to normal temperature with stove.

After heat treatment is accomplished, find that the freight container inner hinge that the casting of the utility model is come out and the metallographic structure of outer hinge demonstration are to be main with pearlitic matrix and double carbide through the metallographic structure test.

Draw through the test of casting back, the hinge in the utility model is accomplished later yield strength in casting and is reached 385N/mm ², tensile strength reaches 590 N/mm ², fully in the National standard to the requirement of freight container hinge correlation parameter.

The hinge steel casting new construction of the utility model Collapsible container shows through test; Its mechanical property meets the GB requirement; And good welding performance; Toughness is preferably arranged again, and the follow-up machinability of its material is suitable with the material property of casing assembly performance and existing conventional structure, can reduce manufacture difficulty.

Claims

1. hinge for folding box; It is characterized in that; This hinge includes inner hinge that is formed by the cast steel material inblock cast and the outer hinge that is formed by the cast steel material inblock cast; Said inner hinge places in the described outer hinge being used, and is equipped with pin shaft hole on described inner hinge and the outer hinge, and a bearing pin passes described pin shaft hole and connects inner hinge and outer hinge.

2. a kind of hinge for folding box according to claim 1 is characterized in that, described cast steel material or be ZG340-550H, or be SCW55O.

3. a kind of hinge for folding box according to claim 1 is characterized in that, the blank bottom outlet of said pin shaft hole forms via casting, or machinework forms.

4. a kind of hinge for folding box according to claim 1 is characterized in that, at least one is provided with the loss of weight groove described inner hinge and outer hinge.

5. a kind of hinge for folding box according to claim 4 is characterized in that the loss of weight groove on the said inner hinge is located at the both sides of inner hinge symmetrically, and the loss of weight groove of every side is at least one.

6. a kind of hinge for folding box according to claim 1 is characterized in that, described outer hinge bottom is provided with lightening hole, is provided with between the two side of outer hinge to strengthen the U template.

7. a kind of hinge for folding box according to claim 3 is characterized in that, described outer hinge is provided with pin shaft hole, and the pin shaft hole position inboard in the two side is provided with boss, and the machinework on said boss of described pin shaft hole forms.