Drawing die for household storage box

Abstract

The utility model provides a household storage box stretching die which comprises a pre-stretching die and a secondary stretching die, a household storage box is manufactured through a secondary stretching technology, the machining precision is high, complex welding steps are omitted, the production efficiency is improved, and welding defects are avoided. The pre-stretching die comprises a first flatness correction mechanism used for conducting first flatness correction on the flatness of a product in a pre-forming cavity in the pre-stretching process so that the side face of the product subjected to secondary stretching can have the good flatness, and the secondary stretching die comprises a second flatness correction mechanism and a third flatness correction mechanism used for conducting second flatness correction on the flatness of the product in the pre-forming cavity in the pre-stretching process so that the side face of the product subjected to secondary stretching can have the good flatness. The second flatness correction mechanism is used for conducting second flatness correction on the flatness of a product in a secondary forming cavity in the secondary stretching process, and the third flatness correction mechanism is used for being matched with the second flatness correction mechanism to conduct reinforced correction at the tail end of the correction stroke of the second flatness correction mechanism. Therefore, the flatness forming effect of the side face of a product subjected to secondary stretching is good.

Description

Technical Field

[0001] The utility model relates to the technical field of household storage box manufacturing, in particular to a household storage box stretching die. Background Art

[0002] A household storage box is a secure device used to store household items and personal financial documents. It is usually made of metal and has fireproof, waterproof and anti-theft functions to protect the items stored in it from loss or theft.

[0003] Most of the existing household storage boxes are made of sheet metal welding technology, but in actual production, the precision of sheet metal forming is low, especially the flatness forming effect of the four sides of the household storage box is poor, which affects the quality of the product. In addition, the welding process of sheet metal is complicated and the production efficiency is low. Welding defects such as pores and cracks may occur during the welding process, which will affect the reliability of the household storage box. Utility Model Content

[0004] The problem to be solved by the utility model is to provide a household storage box manufacturing mold which has good flatness forming effect on four sides, high production efficiency and high reliability.

[0005] The technical solution adopted by the utility model to solve the above problems is: a household storage box stretching die, comprising

[0006] A pre-stretching die, wherein the pre-stretching die comprises a pre-stretching upper die, a pre-stretching lower die and a first flatness correction mechanism; the pre-stretching upper die comprises a pre-stretching accommodating cavity, the pre-stretching lower die comprises a pre-stretching forming block, a pre-forming cavity is provided between the pre-stretching accommodating cavity and the pre-stretching forming block; the first flatness correction mechanism is used to correct the flatness of the product in the pre-forming cavity; and

[0007] A secondary stretching die, wherein the secondary stretching die comprises a secondary stretching upper die, a secondary stretching lower die, a second flatness correction mechanism and a third flatness correction mechanism located at the end of the correction stroke of the second flatness correction mechanism; the secondary stretching upper die comprises a secondary stretching accommodating cavity, the secondary stretching lower die comprises a secondary stretching forming block, and a secondary forming cavity is provided between the secondary stretching accommodating cavity and the secondary stretching forming block; the second flatness correction mechanism and the third flatness correction mechanism correct the flatness of the product in the secondary forming cavity twice, first and second respectively.

[0008] Compared with the prior art, the utility model includes a pre-stretching die and a secondary stretching die, and manufactures a household storage box body through the secondary stretching technology. Compared with the sheet metal welding technology, the processing accuracy itself is higher and the complicated welding steps are eliminated, which not only improves the production efficiency but also eliminates the defects that may be formed during the welding process; the pre-stretching die includes a first flatness correction mechanism, which is used to perform the first flatness correction on the flatness of the product in the pre-forming cavity during the pre-stretching process, so that the side of the product flowing into the secondary stretching already has a good flatness, and the secondary stretching die includes a second flatness correction mechanism and a third flatness correction mechanism. The second flatness correction mechanism is used to perform the second flatness correction on the flatness of the product in the secondary molding cavity during the secondary stretching process, and the third flatness correction mechanism is used to cooperate with the second flatness correction mechanism to perform enhanced correction at the end of the correction stroke of the second flatness correction mechanism, so that the flatness forming effect of the side of the secondary stretched product is better.

[0009] The utility model provides a household storage box stretching die, wherein the first flatness correction mechanism comprises a first correction column arranged on the upper end surface of the pre-stretching lower die, and a first correction groove arranged in the pre-stretching upper die; the first correction column is gradually inserted into the first correction groove during the mold closing process.

[0010] The utility model provides a household storage box stretching die, wherein the number of the first correction columns is four and they are distributed in a rectangular shape on the upper end surface of the pre-stretching lower die; the number of the first correction grooves is four and they are distributed in a rectangular shape on the side surface of the pre-stretching upper die.

[0011] The utility model provides a household storage box stretching die, wherein the second flatness correction mechanism comprises a second correction column arranged on the upper end surface of the secondary stretching lower die, and a second correction groove arranged in the secondary stretching upper die; the second correction column is gradually inserted into the second correction groove during the mold closing process.

[0012] The utility model provides a household storage box stretching die, wherein the number of the second correction columns is four and they are distributed in a rectangular shape on the upper end surface of the secondary stretching lower die; the number of the second correction grooves is four and they are distributed in a rectangular shape on the side surface of the secondary stretching upper die.

[0013] The utility model provides a household storage box stretching die, wherein the secondary stretching upper die includes an upper die limit block, and the secondary stretching lower die includes a lower die limit block; the third flatness correction mechanism includes a correction rib arranged on the lower end surface of the upper die limit block, and a correction groove arranged in the lower die limit block; the correction rib is inserted into the correction groove during the process of fitting the upper die limit block and the lower die limit block.

[0014] The utility model provides a household storage box stretching die, wherein the number of the correction ribs is four and they are distributed in a rectangular shape around the secondary stretching accommodating cavity; the number of the correction grooves is four and they are distributed in a rectangular shape around the secondary stretching forming block. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a side sectional view of the secondary drawing die;

[0017] Figure 3 is a cross-sectional view of the other side of the secondary drawing die;

[0018] Figure 4 is an enlarged view of the third flatness correction mechanism;

[0019] Figure 5 Schematic diagram of the structure of a household storage box in some embodiments. DETAILED DESCRIPTION

[0020] Before describing in detail any embodiment of the utility model, it should be understood that the utility model is not limited in its application to the construction and arrangement details of the components described below or illustrated in the following figures. The utility model can have other embodiments and can be practiced or carried out in various ways. In addition, it should be understood that the words and terms used here are for descriptive purposes and should not be considered restrictive. The use of "including" or "having" and its variations herein is intended to cover the items and their equivalents and additional items displayed below. Unless otherwise specified or limited, the terms "install", "connect", "support" and "couple" and their variations are widely used and cover direct installation and indirect installation, connection, support and connection. In addition, "connect" and "couple" are not limited to physical or mechanical connections or connections.

[0021] Furthermore, on the first aspect, in the disclosure of the present invention, the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore the above terms cannot be understood as limitations on the present invention; on the second aspect, the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" cannot be understood as a limitation on the quantity.

[0022] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

[0023] The embodiments of the present utility model are further described below in conjunction with the accompanying drawings.

[0024] See also Figure 1-5 , a household storage box stretching die, including a pre-stretching die and a secondary stretching die.

[0025] See also Figure 1 , wherein the pre-stretching die 1 comprises a pre-stretching upper die 11, a pre-stretching lower die 12 and a first flatness correction mechanism 13; the pre-stretching upper die 11 comprises a pre-stretching accommodating cavity 111, the pre-stretching lower die 12 comprises a pre-stretching forming block 121, and a pre-forming cavity is provided between the pre-stretching accommodating cavity 111 and the pre-stretching forming block 121; the first flatness correction mechanism 13 is used to correct the flatness of the product in the pre-forming cavity;

[0026] Please continue reading Figure 1 , wherein the secondary stretching die 2 includes a secondary stretching upper die 21, a secondary stretching lower die 22, a second flatness correction mechanism 23 and a third flatness correction mechanism 24 located at the end of the correction stroke of the second flatness correction mechanism 23; the secondary stretching upper die 21 includes a secondary stretching accommodating cavity 211, the secondary stretching lower die 22 includes a secondary stretching forming block 221, and a secondary forming cavity is provided between the secondary stretching accommodating cavity 211 and the secondary stretching forming block 221; the second flatness correction mechanism 23 and the third flatness correction mechanism 24 correct the flatness of the product in the secondary forming cavity twice, first and second.

[0027] In actual use, the utility model includes a pre-stretching die 1 and a secondary stretching die 2. The household storage box is manufactured by the secondary stretching technology. Compared with the sheet metal welding technology, the processing accuracy itself is higher and the complicated welding steps are eliminated, which not only improves the production efficiency but also eliminates the defects that may be formed during the welding process; the pre-stretching die 1 includes a first flatness correction mechanism 13, which is used to perform the first flatness correction on the flatness of the product in the pre-forming cavity during the pre-stretching process, so that the side of the product flowing into the secondary stretching has a good flatness. The secondary stretching die 2 includes a second flatness correction mechanism 23 and a third flatness correction mechanism 24. The second flatness correction mechanism 23 is used to perform the second flatness correction on the flatness of the product in the secondary molding cavity during the secondary stretching process. The third flatness correction mechanism 24 is used to cooperate with the second flatness correction mechanism 23 to perform enhanced correction at the end of the correction stroke of the second flatness correction mechanism 23, so that the flatness forming effect of the side of the secondary stretched product is better.

[0028] Please continue reading Figure 1 , wherein the first flatness correction mechanism 13 includes a first correction column 131 arranged on the upper end surface of the pre-stretching lower mold 12, and a first correction groove 132 arranged in the pre-stretching upper mold 11; the first correction column 131 is gradually inserted into the first correction groove 132 during the mold closing process.

[0029] Under this setting, during the mold closing process, the pre-stretching upper mold 11 and the pre-stretching lower mold 12 not only form the side of the product through the extrusion of the pre-stretching accommodating cavity 111 and the pre-stretching forming block 121, but also strengthen the side of the product through the cooperation of the first correction column 131 and the first correction groove 132, so that the pre-stretched product has a good flatness.

[0030] Please read further Figure 1 , Figure 5 In some embodiments, the number of the first correction columns 131 is four, and they are distributed in a rectangular shape on the upper end surface of the pre-stretching lower mold 12; the number of the first correction grooves 132 is four, and they are distributed in a rectangular shape on the side of the pre-stretching upper mold 11.

[0031] Under this setting, the first correction column 131 is evenly distributed on the upper end surface of the pre-stretching lower mold 12, and the first correction groove 132 is evenly distributed on the side of the pre-stretching upper mold 11, so that the first correction column 131 and the first correction groove 132 can correct the four sides of the product more evenly, which is beneficial to improving the side flatness of the pre-stretching product.

[0032] Please continue reading Figure 1, wherein the second flatness correction mechanism 23 includes a second correction column 231 arranged on the upper end surface of the secondary stretching lower mold 22, and a second correction groove 232 arranged in the secondary stretching upper mold 21; the second correction column 231 is gradually inserted into the second correction groove 232 during the mold closing process.

[0033] Under this arrangement, during the mold closing process, the secondary stretching upper mold 21 and the secondary stretching lower mold 22 not only perform secondary shaping on the side of the product through the extrusion of the secondary stretching accommodating cavity 211 and the secondary stretching forming block 221, but also strengthen the shaping of the side of the product through the cooperation of the second correction column 231 and the second correction groove 232, so that the flatness of the side of the product after secondary stretching is better.

[0034] Please read further Figure 1 , Figure 5 In some embodiments, the number of the second correction columns 231 is four, and they are distributed in a rectangular shape on the upper end surface of the secondary stretching lower die 22; the number of the second correction grooves 232 is four, and they are distributed in a rectangular shape on the side surface of the secondary stretching upper die 21.

[0035] Under this setting, the second correction column 231 is evenly distributed on the upper end surface of the secondary stretching lower mold 22, and the second correction groove 232 is evenly distributed on the side of the secondary stretching upper mold 21, so that the second correction column 231 and the second correction groove 232 can correct the four sides of the product more evenly, which is beneficial to improving the side flatness of the pre-waste product.

[0036] Please continue reading Figure 2-4 , wherein the secondary stretching upper die 21 includes an upper mold limit block 212, and the secondary stretching lower die 22 includes a lower mold limit block 222; the third flatness correction mechanism 24 includes a correction rib 241 arranged on the lower end surface of the upper mold limit block 212, and a correction groove 242 arranged in the lower mold limit block 222; the correction rib 241 is inserted into the correction groove 242 during the process of the upper mold limit block 212 and the lower mold limit block 222 being fitted together.

[0037] Under this arrangement, the second flatness correction mechanism 23 is subjected to a reinforced correction at the end of the correction stroke, and the flatness of the secondary stretched product is further improved by the correction rib 241 being embedded in the correction groove 242.

[0038] Please read further Figure 2-4 In some embodiments, the number of the correction ribs 241 is four, and they are distributed in a rectangular shape around the secondary stretching accommodating cavity 211; the number of the correction grooves 242 is four, and they are distributed in a rectangular shape around the secondary stretching forming block 221.

[0039] Under this arrangement, the distribution of the correction ribs 241 and the correction grooves 242 is more uniform, and the correction effect on the flatness of the secondary stretched product can be further enhanced by cooperating with the second correction columns 231 and the second correction grooves 232 arranged on the four sides.

[0040] The above description is only for the best embodiment of the utility model, but it cannot be understood as a limitation of the claims. The utility model is not limited to the above embodiments, and its specific structure is allowed to be changed. All changes made within the protection scope of the independent claims of the utility model are within the protection scope of the utility model.

Claims

1. A household storage box stretching die, characterized in that: include: A pre-stretching die (1), wherein the pre-stretching die (1) comprises a pre-stretching upper die (11), a pre-stretching lower die (12) and a first flatness correction mechanism (13); the pre-stretching upper die (11) comprises a pre-stretching accommodating cavity (111), the pre-stretching lower die (12) comprises a pre-stretching forming block (121), and a pre-forming cavity is provided between the pre-stretching accommodating cavity (111) and the pre-stretching forming block (121); the first flatness correction mechanism (13) is used for correcting the flatness of a product in the pre-forming cavity; and A secondary stretching die (2), wherein the secondary stretching die (2) comprises a secondary stretching upper die (21), a secondary stretching lower die (22), a second flatness correction mechanism (23), and a third flatness correction mechanism (24) located at the end of the correction stroke of the second flatness correction mechanism (23); the secondary stretching upper die (21) comprises a secondary stretching accommodating cavity (211), the secondary stretching lower die (22) comprises a secondary stretching forming block (221), and a secondary forming cavity is provided between the secondary stretching accommodating cavity (211) and the secondary stretching forming block (221); the second flatness correction mechanism (23) and the third flatness correction mechanism (24) correct the flatness of the product in the secondary forming cavity twice, first and second respectively.

2. The household storage box stretching die according to claim 1, characterized in that: The first flatness correction mechanism (13) comprises a first correction column (131) arranged on the upper end surface of the pre-stretching lower mold (12), and a first correction groove (132) arranged in the pre-stretching upper mold (11); the first correction column (131) is gradually inserted into the first correction groove (132) during the mold closing process.

3. The household storage box stretching die according to claim 2, characterized in that: The number of the first correction columns (131) is four and they are distributed in a rectangular shape on the upper end surface of the pre-stretching lower die (12); the number of the first correction grooves (132) is four and they are distributed in a rectangular shape on the side surface of the pre-stretching upper die (11).

4. The household storage box stretching die according to claim 1, characterized in that: The second flatness correction mechanism (23) comprises a second correction column (231) arranged on the upper end surface of the secondary stretching lower mold (22), and a second correction groove (232) arranged in the secondary stretching upper mold (21); the second correction column (231) is gradually inserted into the second correction groove (232) during the mold closing process.

5. The household storage box stretching die according to claim 4, characterized in that: The number of the second correction columns (231) is four and they are distributed in a rectangular shape on the upper end surface of the secondary stretching lower die (22); the number of the second correction grooves (232) is four and they are distributed in a rectangular shape on the side surface of the secondary stretching upper die (21).

6. The household storage box stretching die according to claim 1, characterized in that: The secondary stretching upper die (21) comprises an upper die limit block (212), and the secondary stretching lower die (22) comprises a lower die limit block (222); the third flatness correction mechanism (24) comprises a correction rib (241) arranged on the lower end surface of the upper die limit block (212), and a correction groove (242) arranged in the lower die limit block (222); the correction rib (241) is inserted into the correction groove (242) during the process of the upper die limit block (212) and the lower die limit block (222) being fitted together.

7. The household storage box stretching die according to claim 6, characterized in that: The number of the correction ribs (241) is four and they are distributed in a rectangular shape around the secondary stretching accommodating cavity (211); the number of the correction grooves (242) is four and they are distributed in a rectangular shape around the secondary stretching forming block (221).

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