Cup mold and cup multi-step punch forming mold set

Abstract

The utility model discloses a cup mold and a cup multi-step punch forming mold set, and relates to the field of molds. Comprising an upper die assembly, a lower die assembly and a forming cavity, the upper die assembly comprises a stamping assembly and a positioning assembly arranged on the stamping assembly in a sleeving mode, the lower die assembly comprises a lower stamping table, and a limiting column is fixedly arranged on the positioning assembly; the limiting column abuts against the lower stamping table so that a positioning gap can be formed between the positioning assembly and the end of the lower stamping table, and the positioning gap is communicated with the forming cavity. Due to the fact that the limiting column abuts against the lower punching table, the positioning gap is formed between the positioning assembly and the end of the lower punching table, the cup body blank is placed in the forming cavity, the positioning gap allows the side wall of the cup body to pass through, in the punching process, the cup body is punched and stretched, the side wall of the cup body is flattened through the positioning gap, wrinkles and cracks are not prone to being generated, and forming is better.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of mould, especially cup mould and cup multi -step punch forming die set. BACKGROUND

[0002] Cup is usually used for containing liquid for people to drink in daily life, in the process of making metal cup, people usually adopts the way of punch drawing to carry out multi -step punch drawing to metal blank finally forms cup, and in the process of punch drawing, cup body is easy to wrinkle or break, influences the processing of cup. UTILITY MODEL CONTENTS

[0003] The utility model provides a cup mould and cup multi -step punch forming die set to overcome the cup body wrinkle or break in the process of punch drawing.

[0004] To achieve the above object, the utility model provides the following technical scheme:

[0005] A cup mould, including upper die assembly, lower die assembly and forming cavity, the upper die assembly includes punch assembly and the positioning assembly of setting on the punch assembly, the lower die assembly includes lower punch station, the positioning assembly is fixed with the limiting post on, when the upper die assembly is close to the lower die assembly, the limiting post is butt joint in the lower punch station makes the positioning assembly with the lower punch station end portion interval forms the positioning gap, the positioning gap with the forming cavity is communicated.

[0006] The cup mould as described above, the positioning assembly includes positioning station and the positioning sleeve fixed on the positioning station, the limiting post is fixed on the positioning station, when the limiting post is butt joint in the lower punch station, the positioning sleeve with the lower punch station forms the positioning gap.

[0007] The cup mould as described above, the forming cavity is located in the lower punch station, the punch assembly includes punch column and the punch head of detachable fixed, the punch assembly is aligned in the forming cavity.

[0008] The cup mould as described above, the punch head periphery is surrounded with a plurality of annular grooves.

[0009] The cup mould as described above, including elastic part, the lower die assembly includes the lower mould plate of fixed in the lower punch station bottom, the lower mould plate is equipped with the installation groove on, the installation groove is used to install the elastic part.

[0010] The cup mould as described above, the lower punch station side wall is equipped with the second exhaust hole, the second exhaust hole with the forming cavity is communicated.

[0011] The cup mold as described above, the positioning table is provided with a limiting ring around, the punch column side wall is provided with a stepped part, the stepped part is matched with the limiting ring for making the positioning table limit from the punch column.

[0012] The cup mold as described above, the lower die plate side wall is provided with an auxiliary exhaust hole, the auxiliary exhaust hole is communicated with the forming cavity.

[0013] A cup multi-step punch forming mold set, comprising a plurality of the cup molds.

[0014] Compared with the prior art, the beneficial effects of the technical scheme are:

[0015] 1, after using the structure of the utility model, because the limiting column abuts on the lower punch table, the positioning assembly and the lower punch table end form a positioning gap, the cup body blank is placed in the forming cavity, the positioning gap allows the cup body side wall to pass through, in the process of punching, the cup body is punched and stretched, the cup body side wall is flattened through the positioning gap, and it is not easy to produce wrinkles and rupture, and the forming is better.

[0016] 2, after using the structure of the utility model, because the cup multi-step punch forming mold set is used for punching and stretching the cup body from shallow to deep, finally forming, the cup body is not easy to be punched and ruptured, and the cup body can be punched and stretched out of a relatively thin cup wall through the progressive punching mode.

[0017] Additional aspects and advantages of the utility model will be partially given in the following description, some will become obvious from the following description, or be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without paying the creative labor.

[0019] Figure 1 It is the cross-sectional structure schematic diagram of embodiment one of the utility model;

[0020] Figure 2 It is Figure 1 The local view of A place;

[0021] Figure 3 It is Figure 1 The local view of B place;

[0022] Figure 4 It is the three-dimensional structure schematic diagram of embodiment one of the utility model;

[0023] Figure 5 This is a schematic diagram of the stamping column structure of this utility model;

[0024] Figure 6 This is a schematic diagram of the positioning platform structure of this utility model;

[0025] Figure 7 This is a three-dimensional structural diagram of the multi-step stamping mold assembly for cups according to this utility model;

[0026] Figure 8 This is a cross-sectional structural diagram of the multi-step stamping mold assembly for cups according to this utility model;

[0027] Figure 9 This is the stamping head of Embodiment 1 of this utility model;

[0028] Figure 10 This is the stamping head of Embodiment 2 of this utility model;

[0029] Figure 11 This is the stamping head of Embodiment 3 of this utility model;

[0030] Figure 12 This is the stamping head of Embodiment 4 of this utility model;

[0031] Figure 13 This is the stamping head of Embodiment 5 of this utility model. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Example 1: As Figures 7 to 13 As shown, this embodiment discloses a multi-step cup forming mold assembly, which includes a first mold 6, a second mold 7, a third mold 8, a fourth mold 9, and a fifth mold 10. The first mold 6 to the fifth mold 10 are all made of... Figures 1 to 6 The cup mold shown has a first mold 6 to a fifth mold 10. The stamping head 112 and the stamping form gradually increase in length from short to long. In order to prevent the cup body from breaking during the stamping and stretching process by stamping and stretching from shallow to deep, and to make the cup body thinner by the step-by-step stamping method.

[0034] like Figures 1 to 6The utility model discloses a cup mould, including upper die assembly 1, lower die assembly 2 and forming cavity 3, the upper die assembly 1 includes punch assembly 11 and the positioning assembly 12 of setting on punch assembly 11, the lower die assembly 2 includes lower punch station 21, the positioning assembly 12 is fixed with the limiting post 13, when the upper die assembly 1 is close to the lower die assembly 2, the limiting post 13 abuts on lower punch station 21 makes the positioning assembly 12 with the lower punch station 21 end -to -end formation positioning gap 4, and the positioning gap 4 with forming cavity 3 is open. After using the structure of the utility model, because the limiting post abuts on the lower punch station and makes the positioning assembly with the lower punch station end -to -end formation positioning gap, cup body blank is placed in the forming cavity, and the positioning gap allows the cup body lateral wall to pass through, in the process of stamping, the cup body is stretched by stamping, and the cup body lateral wall is flattened through the positioning gap, so that the cup body is not prone to wrinkle and rupture, and the forming is better.

[0035] As a specific embodiment, not as a limitation, in order to better form the positioning gap 4, the positioning assembly 12 includes a positioning table 121 and a positioning sleeve 122 fixed to the positioning table 121, the limiting post 13 is fixed to the positioning table 121, and the positioning sleeve 122 forms the positioning gap 4 with the lower punch station 21 when the limiting post 13 abuts on the lower punch station 21. Because the length of the limiting post 13 is slightly longer than the length of the positioning sleeve 122, when the limiting post 13 abuts on the lower punch station 21, there is a height difference between the limiting post 13 and the positioning sleeve 122, so that the positioning sleeve and the end of the lower punch station 21 form a positioning gap 4, the positioning gap 4 corresponds to the cup body lateral wall, and the cup body lateral wall can pass through, in the process of stamping and stretching, the positioning gap 4 flattens the cup body lateral wall, so that the cup body is not prone to wrinkle during stamping and stretching, and the processing forming efficiency is high.

[0036] Further, in order to stamp different styles of cups, the forming cavity 3 is provided in the lower punch station 21, the punch assembly 11 includes a punch column 111 and a punch head 112 that can be detachably fixed, and the punch assembly 11 is aligned with the opening end of the forming cavity 3. One end of the punch head 112 is provided with a thread, and the other end of the punch column 111 is provided with another thread that cooperates with the thread of the punch head 112 for fixation. When the punch head 112 needs to be replaced, it can be replaced by simply twisting the punch head 112 to detach it from the punch column 111. In order to facilitate replacement, an inner hexagonal socket is provided at the end of the punch head 112 away from the punch column 111, and a suitable inner hexagonal socket wrench can be inserted into the inner hexagonal socket to twist and detach it when replacement is needed. The end of the punch column 111 away from the punch head 112 is fixed with an upper die plate 14.

[0037] As a specific embodiment, not as a limitation, in order to preliminarily stamp and stretch the cup, with reference to Figure 9As shown: a punch head 112, the punch head 112 includes a first straight cylinder 1121, the punch head is first punched by punch drawing to the depth of the cup, and the cup is drawn to the initial depth.

[0038] Further, in order to make the cup pop out after each step of punching, the lower die assembly 2 includes a lower die plate 22 fixed to the bottom of the lower punch table 21, and the lower die plate 22 is provided with a mounting groove 221 for mounting the elastic member 5. The elastic member 5 is a spring, one end of which is fixed to the mounting groove 221, and the other end extends to the forming cavity 3. After the punch is completed, the upper die assembly 1 moves away from the lower die assembly 2, and the elastic member 5 pops out the cup body.

[0039] As a specific embodiment rather than a limitation, in order to keep the atmospheric pressure in the forming cavity 3 balanced during the punching of the cup, the side wall of the lower die plate 22 is provided with an auxiliary exhaust hole 222 which is in communication with the forming cavity 3. The auxiliary exhaust hole 222 is arranged on the side wall of the lower die plate 22, is in communication with the mounting groove 221, and is in communication with the forming cavity 3. During the process of the cup being punched downward, the gas is exhausted from the auxiliary exhaust hole 222, so that the atmospheric pressure in the forming cavity 3 is kept balanced.

[0040] Further, in order to make the positioning table 121 not to be separated from the punch column 111 when the positioning table 121 moves along the punch column 111, a limiting ring 1211 is arranged around the positioning table 121, and a step portion 1111 is arranged on the side wall of the punch column 111, which cooperates with the limiting ring 1211 to limit the positioning table 121 from being separated from the punch column 111. Because the limiting ring 1211 is arranged on the positioning table 121, and the step portion 1111 is arranged on the punch column 111, when the positioning table 121 moves relative to the punch column 111, the limiting ring 1211 abuts against the punch column 111, preventing the positioning table 121 from being separated from the punch column 111.

[0041] As a specific embodiment rather than a limitation, the side wall of the lower punch table 21 is provided with a second exhaust hole 211 which is in communication with the forming cavity 3. The second exhaust hole 211 is also used to keep the atmospheric pressure in the forming cavity 3 balanced.

[0042] The specific working principle of the utility model is:

[0043] When the cup body needs to be stamped and stretched, the cup body blank is placed in the forming cavity 3, and the upper mold assembly 1 is pressed down so that the upper mold assembly 1 moves closer to the lower mold assembly 2. The limiting post 13 abuts against the lower stamping table 21 so that the positioning sleeve 122 and the lower stamping table 21 form a positioning gap 4. The positioning gap 4 allows the side wall of the cup body to pass through. The stamping head 112 continues to descend to stamp and stretch the cup body blank. The first mold 6 will stamp and stretch the cup body blank to a certain length. Then, the upper mold assembly 1 is moved away from the lower mold assembly 2, and the elastic element 5 set on the lower template 22 pops the cup body out. Then, the cup body blank processed by the first mold 6 is placed in the second stamping mold 7 for stamping. The above steps are repeated until the cup body is finally stamped and stretched into the predetermined shape.

[0044] Example 2:

[0045] Reference Figure 10 As shown: The difference between this embodiment and Embodiment 1 is that the stamping head 112 in this embodiment includes a first cylindrical portion 1121 and a second cylindrical portion 1122. The second cylindrical portion 1122 is located at the bottom of the first cylindrical portion 1121, and the inner diameter of the second cylindrical portion 1122 is smaller than the inner diameter of the first cylindrical portion 1121. This stamping head 112 is designed to further stretch the depth of the cup, and the amount of stretching is determined by the cup's ductility.

[0046] Example 3:

[0047] Reference Figure 11 As shown: The difference between this embodiment and Embodiment Two is that the stamping head 112 in this embodiment includes a first cylindrical portion 1121 and a second cylindrical portion 1122. A first stepped portion 1123 is provided between the first cylindrical portion 1121 and the second cylindrical portion 1122. The inner diameter of the first stepped portion 1123 gradually decreases from one end near the first cylindrical portion 1121 to one end near the second cylindrical portion 1122. This stamping head 112 is designed to stretch the cup to its final depth in one step. The gradual decrease in the inner diameter of the first stepped portion 1123 from one end near the first cylindrical portion 1121 to one end near the second cylindrical portion 1122 is intended to form a cup with a smaller inner diameter, providing the necessary conditions for subsequent processing of the cup's sidewalls.

[0048] Example 4:

[0049] Reference Figure 12The difference between the embodiment and the embodiment three is that the punch head 112 of the embodiment comprises a first straight cylinder part 1121 and a second straight cylinder part 1122, a first step part 1123 and an annular groove part 1124 are arranged between the first straight cylinder part 1121 and the second straight cylinder part 1122, the first step part 1123 is arranged at the lower end of the first straight cylinder part 1121 and at the upper end of the annular groove part 1124, the annular groove part 1124 is arranged at the upper end of the second straight cylinder part 1122, the annular groove part 1124 is composed of a plurality of annular grooves, the radius of the annular grooves gradually decreases from one end close to the first straight cylinder part 1121 to one end close to the second straight cylinder part 1122, the annular groove 1121 has a smaller groove depth, and the annular groove can better unload force than a flat side wall during punching, and the first step part 1123 is arranged to add decoration at the first step part 1123 subsequently.

[0050] Embodiment five

[0051] With reference to Figure 13 The difference between the embodiment and the embodiment three is that the punch head 112 of the embodiment comprises a first straight cylinder part 1121 and a second straight cylinder part 1122, a first step part 1123 and an annular groove part 1124 are arranged between the first straight cylinder part 1121 and the second straight cylinder part 1122, the first step part 1123 is arranged at the lower end of the first straight cylinder part 1121 and at the upper end of the annular groove part 1124, the annular groove part 1124 is arranged at the upper end of the second straight cylinder part 1122, the annular groove part 1124 is composed of a plurality of annular grooves, the radius of the annular grooves gradually decreases from one end close to the first straight cylinder part 1121 to one end close to the second straight cylinder part 1122, the annular groove 1121 has a smaller groove depth, and the annular groove can better unload force than a flat side wall during punching, and the first step part 1123 is arranged to add decoration at the first step part 1123 subsequently.

[0052] It is apparent for those skilled in the art that the present application is not limited to the details of the foregoing exemplary embodiments, and the present application can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all respects as illustrative and not restrictive, the scope of the present application being defined by the appended claims rather than the foregoing description, and it is intended to embrace all changes and modifications that fall within the meaning and scope of equivalents of the claims. Any reference signs in the claims should not be construed as limiting the claims to the figures in which the reference signs are used.

Claims

1. A cup mould comprising an upper mould assembly (1), a lower mould assembly (2) and a forming cavity (3), characterised in that, The upper die assembly (1) comprises a stamping assembly (11) and a positioning assembly (12) sleeved on the stamping assembly (11), the lower die assembly (2) comprises a lower stamping table (21), a limiting column (13) is fixed on the positioning assembly (12), when the upper die assembly (1) is close to the lower die assembly (2), the limiting column (13) abuts against the lower stamping table (21) to form a positioning gap (4) between the positioning assembly (12) and the end of the lower stamping table (21), and the positioning gap (4) is communicated with the forming cavity (3).

2. The cup mold of claim 1, wherein, The positioning assembly (12) comprises a positioning table (121) and a positioning sleeve (122) fixed on the positioning table (121), the limiting column (13) is fixed on the positioning table (121), and when the limiting column (13) abuts against the lower stamping table (21), the positioning sleeve (122) forms the positioning gap (4) with the lower stamping table (21).

3. The cup mold of claim 2, wherein, The forming cavity (3) is arranged in the lower stamping table (21), the stamping assembly (11) comprises a stamping column (111) and a stamping head (112) which can be detachably fixed, and the stamping assembly (11) is aligned with the opening end of the forming cavity (3).

4. The cup mold of claim 3, wherein, The stamping head (112) is surrounded by a plurality of annular grooves (1124) on the side.

5. The cup mold of claim 1, wherein, The lower die assembly (2) comprises a lower die plate (22) fixed on the bottom of the lower stamping table (21), the lower die plate (22) is provided with a mounting groove (221), and the mounting groove (221) is used for mounting the elastic member (5).

6. The cup mold of claim 1, wherein, The side wall of the lower stamping table (21) is provided with a second exhaust hole (211), and the second exhaust hole (211) is communicated with the forming cavity (3).

7. The cup mold of claim 3, wherein, The limiting ring (1211) is arranged in the positioning table (121), the side wall of the stamping column (111) is provided with a stepped portion (1111), and the stepped portion (1111) is matched with the limiting ring (1211) to limit the positioning table (121) from being separated from the stamping column (111).

8. The cup mold of claim 5, wherein, The side wall of the lower die plate (22) is provided with an auxiliary exhaust hole (222), and the auxiliary exhaust hole (222) is communicated with the forming cavity (3).

9. A cup multi-step press forming die set characterized by, A plurality of cup molds according to any one of claims 1-8. A plurality of cup molds according to any one of claims 1-8.

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