CN116177026A - Transfer box connected by integral hinge and manufacturing method thereof - Google Patents

Abstract

A conjoined hinge-connected transfer box, the box body and the box cover are respectively provided with a hinged page, and the corresponding two pages fit each other and are connected by a rotating shaft to form a reversible hinge. The mutual fit is formed by two A number of square bosses and square grooves interlaced by each page are formed by mutual fit. The rotating shaft is fastened through the opening grooves of the bosses of each page. The hole and the rotating shaft are clearance fit, the size of the boss opening groove is smaller than the diameter of the rotating shaft, and the rotating shaft is locked by the elasticity of its own material, the circular through hole of the box boss and the rotating shaft are fit by hot pressing and cooled on the box boss After shrinking, an interference fit is formed. During heat press fit, the rotating shaft is pressed into the round hole of the box boss through the opening groove of the box boss; the mating surface of each square boss and the corresponding square groove is a rotatable fit. The product has the advantages of less materials, less cost, less man-hours and less work.

Description

One-piece hinged transfer box and manufacturing method thereof

technical field

The invention belongs to the technical field of plastic products, and in particular relates to a structure of a novel foam transfer box and a manufacturing method thereof.

Background technique

Existing transfer boxes, such as food storage equipment used by catering delivery staff and cold chain transportation equipment for finished medical products and food products, etc., basically use foam transfer boxes. However, the structure of the existing transfer box is that the box body and the cover plate are arranged separately, which is inconvenient to use.

Although the existing transfer box also has the box body and the cover plate reversibly connected together, it adopts an external hinge connection mode. In this external hinge connection mode, it is necessary to use screws to fix the two pages of the hinge on the box respectively. On the cover and box body, this process is time-consuming and labor-intensive, which increases the cost of materials and man-hours, especially if the connection is not firm. During use, the pages of the box cover and hinge often fall off, or the pages of the box body and hinge fall off, resulting in many problems during use. Inconvenience and problems, the main reason is that the characteristics of the foam material of the box body and the box cover are not suitable for the screw connection, because the connecting screws of the hinge need to have a relatively firm and solid installation base material.

Contents of the invention

The purpose of the present invention is to overcome the defects of the existing foam transfer box in the connection and overturn of the box body and the box cover, and provide a one-piece hinge-connected transfer box, which can reduce materials, reduce costs, save man-hours, Reduce workload and increase durability.

The purpose of the present invention is achieved by the following technical solutions:

A conjoined hinge-connected transfer box, including a box body and a box cover. The box body and the box cover are each connected with a hinged page, and the corresponding two pages fit each other and are connected by a rotating shaft to form a reversible hinge. On the whole, the mutual fit is composed of several square bosses interlaced by two pages and square grooves that fit each other. The bottom is a circular through hole, the cooperation between the circular through hole of the box cover boss and the rotating shaft is a clearance fit, the cooperation between the circular through hole of the box body boss and the rotating shaft is an interference fit, and the size of the opening groove of the boss is smaller than that of the rotating shaft. Diameter, the mouth of the opening uses the elasticity of its own material to lock the rotating shaft. The circular through hole of the box boss and the rotating shaft are fitted by hot pressing and form an interference fit after the box boss cools and shrinks. When hot pressing, the rotating shaft The opening groove of the boss of the box is pressed into the round hole of the boss of the box; the mating surface of each square boss and the corresponding square groove is rotatable fit.

In a preferred solution, the rotating shaft is a tubular shaft made of polymer composite materials.

In the preferred solution, the number of square bosses and square grooves set on the pages of the two hinges corresponding to the box body and the box cover, wherein the number of bosses of any one hinge is equal to the number of grooves of the page of the other hinge, And the difference in the number of bosses of the two hinges is one.

In the preferred solution, the rotating part of the box body and the box cover is composed of a single hinge, and the single hinge means that the page of a sub-hinge is provided with two bosses and a groove, while the page of the other hinge is correspondingly provided with two recesses. Groove and a boss, and all are centered and symmetrically arranged.

In the preferred solution, the rotating part of the box body and the box cover is composed of double hinges. The double hinge means that the page of one hinge is provided with three bosses and two grooves, while the page of the other hinge is correspondingly provided with three grooves and two grooves. Two bosses are arranged symmetrically in the center.

In a preferred solution, the hinges on the box body have an odd number of bosses and an even number of grooves, and the hinges on the box cover have an even number of bosses and an odd number of grooves. This structure can make the both sides of the boss of the box cover hinge cover the opening groove of the boss provided by the pagination of the box hinge after installation.

In a preferred solution, the outer edge of the opening of the boss is provided with a bevel transition or a circular arc transition. Set bevel transition or circular arc transition to facilitate the snap-in of the rotating shaft.

In the preferred solution, the rear side of the box body and the box cover is provided with a limit seat that limits the maximum rotation angle of the box cover, and the limit seat can limit the maximum rotation angle of the box cover to 100°-120°.

In the preferred solution, the opening grooves of the bosses provided by the hinges of the box body and the box cover are all spiral structures, wherein the helix of the boss opening grooves of the box body is set from the middle of the box body boss to the inner side of the box body, and The helical direction of the opening groove of the boss of the box cover is opposite to the helical direction of the opening groove of the boss of the box body. The use of spiral opening grooves can reliably prevent the possibility that the box body or the box cover will fall out of the shaft due to the impact of external force, and achieve the effect of the so-called winding path, because even if it is affected by external force, no matter what direction the external force comes from, due to the external force The direction of action is generally in a straight line. It is impossible to make the rotating shaft move around the spiral route and get out of the box or the cover. After that, the shaft must return to the original position of the round hole. When assembling or maintaining and disassembling this structural proposal, as long as it rotates inwardly or outwardly along the direction of the helix correspondingly, and it can be assembled or disassembled with proper force. The direction of rotation of the two spiral grooves is opposite to that of the impact direction of the external force that the box body and the box cover may encounter, and the overall resistance force is used to offset as much as possible.

The manufacturing method of any one-piece hinged transfer box mentioned above is as follows:

1) Molding: compress the foamed polypropylene particles in the cast iron pipe, compress the materials well, use the material gun and use air to rush the materials into the mold cavity of the mold, after the mold cavity is filled with materials, then lock the mold And start to pass in steam to heat up, heat up to the set time, cool with water, and open the mold after cooling in place, use sensitive water to open the mold, and blow the product out of the mold cavity with air.

2) Press into the rotating shaft: take a plastic tube made in advance according to the design requirements, cut off the qualified length and deburr the rotating shaft; use the characteristics of the soft state of the product just blown out of the molding cavity, and according to the design It is required to quickly press the rotating shaft into the circular through hole of the boss of the box body.

3) Drying: Water vapor is used in the molding process of the product, so the product must be dried after molding.

4) Embed the hinged boss of the box cover into the hinged boss of the box body, and at the same time, pass the square boss of the hinged leaf of the box cover through the opening slot and the circular through hole that has been stuck in the hinged boss of the box body Shaft clamping.

The beneficial effects of the present invention are:

1. In the present invention, the box body and the box cover are connected with a page of the hinge, so there is no need to perform secondary processing on the foamed molded parts, such as scribing positioning and screw connection operations;

2. To improve the durability, the existing screws are used to connect the box body and the box cover. The stress points are all concentrated on a few screws, and the connection parts are easily damaged;

3. There is no need to prepare additional hinges and screws, reducing material consumption and saving costs;

4. Save working hours and reduce processing workload;

5. Reduce the workload of procurement and warehousing, including management;

6. The opening grooves of the boss set on the hinges of the box body and the box cover are all spiral structures, which can reliably prevent the possibility that the box body or box cover will fall out of the shaft due to external impact.

Description of drawings

Fig. 1 is a schematic diagram of the box structure of the present embodiment;

Fig. 2 is a top view schematic diagram of Fig. 1;

Fig. 3 is the structural representation of case cover of present embodiment;

Fig. 4 is a top view schematic diagram of Fig. 3;

Figure 5 is a schematic left view of Figure 4

Fig. 6 is a partially enlarged schematic diagram of A in Fig. 1;

Fig. 7 is a three-dimensional schematic view of the box;

Fig. 8 is a three-dimensional schematic diagram of a case cover;

Fig. 9 is a three-dimensional schematic diagram of a transfer box with a multi-hinge structure;

Fig. 10 is the schematic diagram that the opening slot of the boss of the casing is a spiral structure;

Fig. 11 is a schematic diagram showing that the opening groove of the boss of the box cover is a spiral structure.

In the figure: box body 1; box cover 2; rotating shaft 3; boss 4; groove 5; opening slot 6; circular through hole 7; bevel 8; multi-hinge 9.

Detailed ways

The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings: this embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following the described embodiment.

箱盖开口槽6距离6mm。箱体1和箱盖2的后侧设置有限制箱盖2最大转动角度的限位座，本实施例的限位角度值为100°至120°。凸台4开口槽6处的外边缘设有斜角8过渡或圆弧过渡，设置过渡段便于转轴3卡入。参见图6。Embodiment 1: A one-piece hinged transfer box, including a box body 1 and a box cover 2, see FIGS. 1 to 5 . The box body 1 and the box cover 2 are respectively connected with a hinged page, and the corresponding two pages fit each other and are connected by the rotating shaft 3 to form a reversible hinge. The platform 4 and the square groove 5 are interspersed to form each other. The rotating shaft is interlocked by the bosses provided by each paged boss. The rotating shaft 3 is interlocked by the boss opening grooves 6 provided by the bosses 4 of each page. The bottom of each boss 4 is a circular through hole, the bottom of each boss 4 opening groove 6 is a circular through hole 7, the cooperation of the circular through hole 7 of the box cover boss 4 and the rotating shaft 3 is a clearance fit, and the box body boss 4 The cooperation between the circular through hole 7 and the rotating shaft 3 is an interference fit, the size of the opening groove 6 of the boss is smaller than the diameter of the rotating shaft 3, and the mouth of the opening groove 6 can lock the rotating shaft 3 in the circular through hole 7 by its own elasticity. The circular through hole 7 of the box boss 4 and the rotating shaft 3 form an interference fit after the box boss 4 is cooled and shrunk through heat press fit, and the rotating shaft 3 passes through the opening groove 6 of the box boss 4 during heat press fitting Press into the circular through hole 7 of the box body boss 4; the rotating shaft 3 is a tubular shaft made of plastic parts. The mating surface of the square boss 4 and the corresponding square groove 5 is a rotatable fit. When designing the mouth distance of the opening groove 6 of the boss 4, it is necessary to take into account that the rotating shaft 3 can be buckled into the circular through hole 7. Sufficient resistance to prevent detachment during use. The specific value of this embodiment is that the height of the square boss 4 is 28 mm, and the diameter of the circular through hole 7 is

Case cover opening groove 6 distances 6mm. The rear side of the box body 1 and the box cover 2 is provided with a limit seat that limits the maximum rotation angle of the box cover 2, and the limit angle value of this embodiment is 100° to 120°. The outer edge of the opening groove 6 of the boss 4 is provided with a bevel 8 transition or a circular arc transition, and a transition section is provided to facilitate the locking of the rotating shaft 3 . See Figure 6.

The number of square bosses 4 and square grooves 5 set for the corresponding two pages, wherein the number of bosses 4 of any one page is equal to the number of grooves 5 of another page, and the difference between the number of bosses 4 of the two pages for one.

There are an odd number of bosses and an even number of grooves for the paging of the hinge on the casing, and an even number of even and odd numbers of grooves for the paging of the hinge on the case cover. This structure can make the both sides of the boss of the box cover hinge cover the opening groove of the boss provided by the pagination of the box hinge after installation.

The rotating parts of the box body 1 and the box cover 2 of the present invention can be constituted by a single hinge, or double hinges or more hinges. 5, while the other page is correspondingly provided with a boss 4 and two grooves 5, and they are all arranged symmetrically in the center, and the length of the boss 4 in the middle is equal to the length of the boss 4 at the two ends. Times, increasing the length of the middle boss 4 is conducive to stability when opening the lid 2, avoiding shaking.

In this embodiment, the cooperation between the rotating shaft and the circular through hole of the box body can also be a clearance fit, and at the same time, the cooperation between the rotating shaft and the circular through hole of the box cover is set as an interference fit.

Embodiment 2: The rotating part of the box body 1 and the box cover 2 is composed of double hinges. The double hinge means that one page is provided with three protrusions 4 and two grooves 5, while the other page is correspondingly provided with two protrusions. 4 and three grooves 5, and all of them are centered and symmetrically arranged. All the other structures are with embodiment 1. Refer to Fig. 7 and Fig. 8 for the three-dimensional schematic diagrams of the box body 1 and the box cover 2 of the double-hinge structure.

Embodiment 3: The rotating parts of the box body 1 and the box cover 2 are composed of multiple hinges 9 . All the other structures are with embodiment 1 or embodiment 2. See Figure 9.

Embodiment 4: The opening grooves of the bosses set by the hinges of the box body and the box cover are all spiral structures, wherein the spiral of the boss opening grooves of the box body is set from the box body to the outside, and the box cover The helical direction of the boss opening groove is opposite. The use of the helical open groove can reliably prevent the possibility that the box body or the box cover will come out of the rotating shaft due to the impact of external force, and the rest of the structure is the same as that of the first embodiment. See Figure 10, Figure 11.

Embodiment 5: Any one-piece hinged transfer case above, its manufacturing method is:

1) Molding: compress the foamed polypropylene particles in the cast iron pipe, compress the materials well, use the material gun and use air to rush the materials into the mold cavity of the mold, after the mold cavity is filled with materials, then lock the mold And start to pass in steam to heat up, heat up to the set time, cool with water, and open the mold after cooling in place, use sensitive water to open the mold, and blow the product out of the mold cavity with air.

2) Press into the rotating shaft: take a plastic tube made in advance according to the design requirements, cut off the qualified length and deburr the rotating shaft; use the characteristics of the soft state of the product just blown out of the molding cavity, and according to the design It is required to quickly press the rotating shaft into the circular through hole of the boss of the box body.

3) Drying: Water vapor is used in the molding process of the product, so the product must be dried after molding.

4) Embed the hinged boss of the box cover into the hinged boss of the box body, and at the same time, pass the square boss of the hinged leaf of the box cover through the opening slot and the circular through hole that has been stuck in the hinged boss of the box body Shaft clamping.

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above. Those skilled in the industry should understand that the present invention is not limited by the above-mentioned embodiments. What are described in the above-mentioned embodiments and the description only illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will also have Variations and improvements are possible, which fall within the scope of the claimed invention. The protection scope of the present invention is defined by the appended claims and their equivalents.

Claims (10)

1. A conjoined hinge-connected transfer box, comprising a box body and a box cover, characterized in that the box body and the box cover are respectively conjoined to be provided with a hinged page, and the corresponding two pages fit each other and pass through the rotating shaft Connecting to form a reversible hinge as a whole, the mutual fit is formed by the mutual fit of several square bosses and square grooves interlaced by two pages, and the rotating shaft is buckled through the boss opening grooves provided by the bosses of each page, The bottom of the opening groove of each boss is a circular through hole, the cooperation between the circular through hole of the box cover boss and the rotating shaft is a clearance fit, the cooperation between the circular through hole of the box body boss and the rotating shaft is an interference fit, and the boss The size of the opening groove is smaller than the diameter of the shaft, and the mouth of the opening uses the elasticity of its own material to lock the shaft. The circular through hole of the box boss and the shaft are fitted by heat compression and form an interference fit after the box boss cools and shrinks. , during heat press fit, the rotating shaft is pressed into the round hole of the box boss through the opening groove of the box boss; the mating surface of each square boss and the corresponding square groove is a rotatable fit. 2. A one-piece hinged transfer box according to claim 1, characterized in that the rotating shaft is a tubular shaft made of polymer composite materials. 3. A one-piece hinged transfer box according to claim 1 or 2, characterized in that the square bosses and square grooves set by the two hinges corresponding to the box body and the box cover The number of paged bosses of any one hinge is equal to the number of paged grooves of the other hinge, and the difference between the number of paged bosses of the two hinges is one. 4. A conjoined hinged transfer box according to claim 3, characterized in that the rotating part of the box body and the box cover is formed by a single hinge, and the single hinge refers to a page with a sub-hinge provided with There are two bosses and a groove, and the other hinge is provided with two grooves and a boss correspondingly, and they are all centered and symmetrically arranged. 5. A one-piece hinged transfer box according to claim 3, characterized in that the rotating parts of the box body and the box cover are composed of double hinges, and the double hinges refer to the fact that there are three convex hinges on the pages of one hinge. platform and two grooves, while the paging of the other hinge is correspondingly provided with three grooves and two bosses, all of which are centered and symmetrically arranged. 6. A one-piece hinged transfer box according to claim 3, characterized in that, the number of bosses provided for the paging of the hinge on the box body is an odd number and the number of grooves is an even number, and the number of hinges on the box cover is Correspondingly, the number of bosses set by pagination is even and the number of grooves is odd. 7. A one-piece hinged transfer box according to claim 3, characterized in that, the outer edge of the opening of the boss is provided with a bevel transition or a circular arc transition. 8. A one-piece hinged transfer box according to claim 7, characterized in that, the rear side of the box body and the box cover is provided with a limit seat that limits the maximum rotation angle of the box cover, and the limit seat can limit The maximum rotation angle of the case cover is 100°-120°. 9. A one-piece hinged transfer box according to claim 7, characterized in that, the opening slots of the bosses provided by the hinged pages of the box body and the box cover are all spiral structures, wherein the protrusions of the box body The helix of the platform opening groove is set from the middle part of the box body boss toward the inner side of the box body, and the helix direction of the boss opening groove of the box cover is opposite to the helical direction of the box body boss opening groove helix. 10. The manufacturing method of any one-piece hinged transfer box mentioned above is as follows: 1) Molding: compress the foamed polypropylene particles in the cast iron pipe, compress the materials well, use the material gun and use air to rush the materials into the mold cavity of the mold, after the mold cavity is filled with materials, then lock the mold And start to pass in steam to heat up, heat up to the set time, cool with water, and open the mold after cooling in place, use sensitive water to open the mold, and blow the product out of the mold cavity with air. 2) Press into the rotating shaft: take a plastic tube made in advance according to the design requirements, cut off the qualified length and deburr the rotating shaft; use the characteristics of the soft state of the product just blown out of the molding cavity, and according to the design It is required to quickly press the rotating shaft into the circular through hole of the boss of the box body. 3) Drying: Water vapor is used in the molding process of the product, so the product must be dried after molding. 4) Embed the hinged boss of the box cover into the hinged boss of the box body, and at the same time, pass the square boss of the hinged leaf of the box cover through the opening slot and the circular through hole that has been stuck in the hinged boss of the box body Shaft clamping.

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