A mold for processing container corner pieces

Abstract

The present invention discloses a mold for processing container corner pieces, comprising: a mold body, comprising an upper sand shell and a lower sand shell that are closed and connected, a pouring guide cavity is arranged in the middle of the upper sand shell and the lower sand shell, a plurality of corresponding molding cavities are arranged around the upper sand shell and the lower sand shell, the molding cavity is connected to the pouring guide cavity through a corresponding material guide channel, and a pouring riser connected to the pouring guide cavity is arranged on the upper sand shell; a cutting edge forming mechanism, comprising a molding convex edge arranged at the junction of the material guide channel and the molding cavity, the end of the molding convex edge is arranged in a pointed shape; a shrinkage compensation mechanism, comprising a pouring shrinkage compensation cavity arranged on the upper side of the middle of the upper sand shell, and a corresponding sand rod is fixed downward at the top center of the pouring shrinkage compensation cavity. The present invention can form a reasonable cutting edge at the junction of the cast parts, thereby facilitating the subsequent workpiece separation and cutting operations.

Description

Technical Field

[0001] The present invention relates to the technical field of container corner piece processing, and in particular to a mold for container corner piece processing, which is mainly used for performing casting and molding processing on the container corner piece. Background Art

[0002] Container corner fittings, also known as box corners and lifting corners, are mainly used at the corners of containers and play a key role in the lifting, handling, fixing, stacking and fastening operations of containers.

[0003] At present, container corner fittings are generally processed by sand casting. The existing molds for processing container corner fittings generally include an upper sand shell and a lower sand shell. Molten steel is poured through the pouring and riser set on the upper sand shell. After the casting is completed, the casting generally contains four container corner fittings. After the sand shell is naturally cooled and the sand falls off, the container corner fittings need to be cut and separated by corresponding cutting equipment. Since the thickness of the connection between the container corner fitting and the material of the pouring and riser is relatively large, the workpieces are separated and cut mainly by thermal cutting methods such as flame, plasma, laser, etc., or cold cutting methods such as band saws, circular saws, milling cutters, etc. Not only is the cutting efficiency low, but the cost of cutting is also relatively high.

[0004] Therefore, under the premise of not affecting the molding quality of the product, the research purpose of the present invention is to design a mold for processing container corner pieces that can effectively set a molding ridge on the material guide channel of the mold to form a reasonable cutting edge at the joint of the casting, thereby facilitating the subsequent workpiece separation and cutting operations. Summary of the invention

[0005] In view of the technical problems existing in the above-mentioned prior art, the present invention provides a mold for processing container corner fittings, which can effectively solve the technical problems existing in the above-mentioned prior art.

[0006] The technical solution of the present invention is:

[0007] A mold for processing container corner pieces, comprising:

[0008] The mold body comprises an upper sand shell and a lower sand shell which are connected in a closed manner, wherein a pouring material guide cavity is arranged in the middle of the upper sand shell and the lower sand shell, and a plurality of corresponding molding cavities are arranged around the upper sand shell and the lower sand shell, wherein the molding cavities are connected to the pouring material guide cavity through corresponding material guide channels, and a pouring riser connected to the pouring material guide cavity is arranged on the upper sand shell;

[0009] The cutting edge forming mechanism comprises a forming convex edge arranged at the junction of the material guiding channel and the forming cavity, and the end of the forming convex edge is arranged in a pointed shape;

[0010] The feeding mechanism comprises a pouring and feeding cavity arranged on the upper side of the middle part of the upper sand shell, the pouring and feeding cavity is connected to the pouring material guide cavity, and a corresponding sand rod is fixed downward at the top center of the pouring and feeding cavity.

[0011] The molding convex edges are respectively arranged on the lower sand shells.

[0012] The molding convex edges are respectively and integrally arranged on the lower sand shell.

[0013] The lower sand shell is respectively provided with corresponding receiving grooves at positions corresponding to the forming convex edges, and a plurality of corresponding coil springs are respectively arranged in the receiving grooves at evenly distributed intervals, and corresponding compression plates are respectively arranged on the upper and lower sides of the coil springs, and the centers of the compression plates are connected by corresponding metal wires, and the coil springs are fixed between the compression plates in an extruded state, and the forming convex edge is embedded in the receiving grooves, and the bottom surface of the forming convex edge abuts against the compression plate located on the upper part.

[0014] The molten steel enters between the upper sand shell and the lower sand shell through the pouring riser to cast the workpiece. After the casting is completed, the metal wire is heated and its elongation is improved. Under the elastic force of the coil spring, the metal wire is stretched, and the coil spring is expanded to drive the forming convex edge to rise.

[0015] The metal wire is made of copper.

[0016] The bottom of the lower sand shell is provided with a plurality of cold iron cavities located in the forming cavity, and corresponding conforming cold irons are fixedly installed in the cold iron cavities respectively.

[0017] The top of the upper sand shell is integrally formed and is upwardly provided with a plurality of corresponding reinforcing ribs, and the reinforcing ribs are obliquely arranged at the top of the upper sand shell.

[0018] The bottom of the lower sand shell is integrally formed and has a plurality of corresponding pads arranged downward.

[0019] Advantages of the present invention:

[0020] 1) The present invention uses a cutting edge forming mechanism, that is, a forming convex edge arranged at the junction of the material guide channel and the forming cavity, so that a pointed cutting edge can be formed at the junction of the cast part after casting. Subsequently, the container corner piece workpiece can be directly driven by a hydraulic expansion device to directly break the cutting edge, thereby quickly completing the separation and cutting of the container corner piece workpiece under the condition of low cost consumption.

[0021] 2) Since the setting of the forming convex edge often leads to a reduction in the flow cross section of the molten steel, it will not only affect the flowability of the molten steel during the pouring process, but also have an adverse effect on the subsequent shrinkage compensation of the product, thereby causing shrinkage holes to form on the surface of the workpiece, which is very troublesome. To this end, the present invention further adds a shrinkage compensation mechanism, which includes a pouring shrinkage compensation cavity arranged on the upper side of the middle of the upper sand shell, the pouring shrinkage compensation cavity is connected to the pouring material guide cavity, and a corresponding sand rod is fixed downward at the top center of the pouring shrinkage compensation cavity. During the pouring of molten steel, part of it enters the molding cavity through the material guide channel, and part of it enters the pouring and feeding cavity. As the amount of material entering the pouring and feeding cavity increases, the pressure of the molten steel increases, which can effectively assist in improving the circulation rate of the molten steel; in addition, through the intervention of the sand rod set at the top center of the pouring and feeding cavity, the air permeability at the center of the pouring and feeding cavity can be effectively maintained, so that the molten steel located in the pouring and feeding cavity can be fed to the molding cavity in time to prevent shrinkage holes from forming on the surface of the workpiece, thereby effectively solving the adverse effects caused by the setting of the molding convex edge to ensure the quality of the product.

[0022] 3) The lower sand shell of the present invention is provided with corresponding receiving grooves at positions corresponding to the forming convex edges, and a number of coil springs are provided in the receiving grooves. Under the cooperation of the compression plate and the metal wire, the coil springs are squeezed and fixed. After the pouring is completed, the elongation of the metal wire will be greatly improved in a high-temperature environment. At this time, under the elastic force of the coil spring, the metal wire is easily stretched, so the coil spring can be unfolded to drive the forming convex edge to rise. In this way, the setting of the forming convex edge can be completed directly without affecting the fluidity of the molten steel, thereby further solving the adverse effects caused by the setting of the forming convex edge, and realizing the forming setting of the pointed edge at the joint of the casting. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention.

[0024] Figure 2 It is an exploded view of the parts of the present invention.

[0025] Figure 3 It is a schematic structural diagram of the casting of the present invention.

[0026] Figure 4 It is a structural schematic diagram of the cutting edge forming mechanism of the second embodiment of the present invention.

[0027] In the accompanying drawings: mold body 1, upper sand shell 101, lower sand shell 102, pouring guide cavity 2, molding cavity 3, guide channel 4, pouring riser 5, cutting edge molding mechanism 6, feeding mechanism 7, pouring feeding cavity 701, sand rod 702, receiving groove 8, coil spring 9, compression plate 10, metal wire 11, conformal cold iron 12, reinforcing rib 13, pad 14, casting 15, cutting edge 16. DETAILED DESCRIPTION

[0028] In order to facilitate understanding by those skilled in the art, the structure of the present invention is further described in detail with reference to the embodiments in conjunction with the accompanying drawings:

[0029] Embodiment 1

[0030] refer to Figure 1-3 , a mold for processing container corner pieces, comprising:

[0031] The mold body 1 comprises an upper sand shell 101 and a lower sand shell 102 which are closed and connected. A casting material guide cavity 2 is arranged in the middle of the upper sand shell 101 and the lower sand shell 102. A plurality of corresponding molding cavities 3 are arranged around the upper sand shell 101 and the lower sand shell 102. The molding cavities 3 are connected to the casting material guide cavity 2 through corresponding material guide channels 4. A pouring riser 5 connected to the casting material guide cavity 2 is arranged on the upper sand shell 101.

[0032] The cutting edge forming mechanism 6 comprises a forming convex edge arranged at the connection between the material guiding channel 4 and the forming cavity 3, and the end of the forming convex edge is arranged in a pointed shape;

[0033] The feeding mechanism 7 comprises a pouring and feeding cavity 701 arranged on the upper side of the middle of the upper sand shell 101 , the pouring and feeding cavity 701 is connected to the pouring material guide cavity 2 , and a corresponding sand rod 702 is fixed downward at the top center of the pouring and feeding cavity 701 .

[0034] The molding convex edges are respectively arranged on the lower sand shell 102 . In this embodiment, the molding convex edges are respectively and integrally arranged on the lower sand shell 102 .

[0035] The present invention uses a cutting edge forming mechanism 6, that is, a forming convex edge arranged at the connection between the material guide channel 4 and the forming cavity 3, so that a pointed cutting edge 16 can be formed at the connection of the casting 15 after casting. Subsequently, the container corner piece workpiece can be directly driven by a hydraulic expansion device to directly break the cutting edge 16, thereby quickly completing the separation and cutting of the container corner piece workpiece under the condition of low cost consumption.

[0036] Since the setting of the forming convex edge often leads to the reduction of the flow cross section of the molten steel, it will not only affect the flowability of the molten steel during the pouring process, but also have an adverse effect on the subsequent shrinkage compensation of the product, thereby causing shrinkage holes to form on the surface of the workpiece, which is very troublesome. For this reason, the present invention further adds a shrinkage compensation mechanism 7. During the pouring process of the molten steel, part of it enters the forming cavity 3 through the material guide channel 4, and part of it enters the pouring and shrinkage compensation cavity 701. As the amount of material entering the pouring and shrinkage compensation cavity 701 increases, the pressure of the molten steel increases, thereby effectively assisting in improving the flow rate of the molten steel; in addition, through the intervention of the sand rod 702 set at the top center of the pouring and shrinkage compensation cavity 701, the air permeability at the center of the pouring and shrinkage compensation cavity 701 can be effectively maintained, so that the molten steel located in the pouring and shrinkage compensation cavity 701 can be timely compensated to the forming cavity to prevent shrinkage holes from forming on the surface of the workpiece, thereby effectively solving the adverse effects caused by the setting of the forming convex edge to ensure the quality of the product.

[0037] The bottom of the lower sand shell 102 is provided with a plurality of chill cavities located in the forming cavity 3 , and corresponding conformable chills 12 are fixedly installed in the chill cavities respectively.

[0038] The top of the upper sand shell 101 is integrally formed with a plurality of corresponding reinforcing ribs 13 disposed upward, and the reinforcing ribs 13 are obliquely disposed at the top of the upper sand shell 101. The bottom of the lower sand shell 102 is integrally formed with a plurality of corresponding pads 14 disposed downward.

[0039] Embodiment 2

[0040] refer to Figure 4 The difference between this embodiment and the first embodiment is that: the lower sand shell 102 is respectively provided with corresponding receiving grooves 8 at positions corresponding to the forming convex edges, and a plurality of corresponding coil springs 9 are respectively arranged in the receiving grooves 8 at intervals and evenly distributed, and corresponding compression plates 10 are respectively provided on the upper and lower sides of the coil springs 9, and the centers of the compression plates 10 are connected by corresponding metal wires 11, and the coil springs 9 are fixed between the compression plates 10 in an extruded state, and the forming convex edges are embedded in the receiving grooves 8, and the bottom surface of the forming convex edges abuts against the compression plate 10 located at the upper part.

[0041] The molten steel enters between the upper sand shell 101 and the lower sand shell 102 through the pouring riser 5 to cast the workpiece. After the casting is completed, the metal wire 11 is heated and its elongation is improved. Under the elastic force of the coil spring 9, the metal wire 11 is stretched, and the coil spring 9 is expanded to drive the forming convex edge to rise. In this embodiment, the metal wire 11 is made of copper.

[0042] The lower sand shell 102 of the present invention is provided with corresponding receiving grooves 8 at positions corresponding to the molding convex edges, and a plurality of coil springs 9 are provided in the receiving grooves 8. Under the cooperation of the compression plate 10 and the metal wire 11, the coil springs 9 are squeezed and fixed. After the pouring is completed, the extensibility of the metal wire 11 in a high-temperature environment will be greatly improved. At this time, under the elastic force of the coil spring 9, the metal wire 11 is easily stretched, so the coil spring 9 can be unfolded to drive the molding convex edge to rise. In this way, the setting of the molding convex edge can be completed directly without affecting the fluidity of the molten steel, so as to further solve the adverse effects caused by the setting of the molding convex edge, and realize the forming setting of the pointed cutting edge 16 at the connection of the casting 15.

[0043] It should be pointed out that the implementation principle and technical effects of this embodiment are the same as those of Embodiment 1. For the sake of brief description, for matters not mentioned in this embodiment, reference may be made to the corresponding contents in Embodiment 1.

[0044] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A mold for processing container corner pieces, characterized in that: include: A mold body (1) comprises an upper sand shell (101) and a lower sand shell (102) which are connected in a closed manner, wherein a casting material guide cavity (2) is arranged in the middle of the upper sand shell (101) and the lower sand shell (102), and a plurality of corresponding molding cavities (3) are arranged around the upper sand shell (101) and the lower sand shell (102), wherein the molding cavities (3) are connected to the casting material guide cavity (2) via corresponding material guide channels (4), and a pouring riser (5) which is connected to the casting material guide cavity (2) is arranged on the upper sand shell (101); The cutting edge forming mechanism (6) comprises a forming convex edge arranged at the connection between the material guide channel (4) and the forming cavity (3), the end of the forming convex edge being arranged in a pointed shape; The feeding mechanism (7) comprises a pouring feeding cavity (701) arranged on the upper side of the middle part of the upper sand shell (101), the pouring feeding cavity (701) being connected to the pouring material guide cavity (2), and a corresponding sand rod (702) being fixed downward at the top center of the pouring feeding cavity (701); The molding convex edges are respectively arranged on the lower sand shell (102); The lower sand shell (102) is provided with corresponding receiving grooves (8) at positions corresponding to the formed convex edges, and a plurality of corresponding coil springs (9) are evenly distributed at intervals in the receiving grooves (8). Corresponding compression plates (10) are provided on the upper and lower sides of the coil springs (9), and the centers of the compression plates (10) are connected by corresponding metal wires (11). The coil springs (9) are fixed between the compression plates (10) in an extruded state, and the formed convex edges are embedded in the receiving grooves (8), and the bottom surface of the formed convex edges abuts against the compression plates (10) located at the upper part.

2. A mold for processing container corner pieces according to claim 1, characterized in that: The molten steel enters between the upper sand shell (101) and the lower sand shell (102) through the pouring riser (5) to cast the workpiece. After the casting is completed, the metal wire (11) is heated and its elongation is increased. Under the elastic force of the coil spring (9), the metal wire (11) is stretched, and the coil spring (9) is expanded to drive the forming convex edge to rise.

3. A mold for processing container corner pieces according to claim 2, characterized in that: The metal wire (11) is made of copper.

4. A mold for processing container corner pieces according to claim 1, characterized in that: The bottom of the lower sand shell (102) is provided with a plurality of cold iron cavities located in the forming cavity (3), and corresponding conforming cold irons (12) are fixedly installed in each of the cold iron cavities.

5. The mold for processing container corner pieces according to claim 1, characterized in that: The top of the upper sand shell (101) is integrally formed with a plurality of corresponding reinforcing ribs (13) arranged upward, and the reinforcing ribs (13) are arranged obliquely on the top of the upper sand shell (101).

6. A mold for processing container corner pieces according to claim 1, characterized in that: The bottom of the lower sand shell (102) is integrally formed and has a plurality of corresponding cushion blocks (14) arranged downward.

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