Combined type hot forming flange die

Abstract

The utility model discloses a combined type hot forming flange die which comprises a male die and further comprises a female die assembly and a pressing assembly, and the female die assembly is located in the pressing assembly. The pressing assembly comprises a pressing outer sleeve, a supporting assembly is arranged in the pressing outer sleeve, and the female die assembly is located above the supporting assembly. The supporting assembly comprises a first supporting ring, and a second supporting ring is arranged in the first supporting ring, the female die assembly is designed in a split mode, when scrapped cracks and irreparable defects occur on the female die inner ring, only the female die inner ring needs to be replaced, the whole female die does not need to be scrapped, the use amount of materials for die maintenance is greatly reduced, and the cost is reduced. The use cost of the equipment is reduced; when different products are produced, the auxiliary mold can be suitable for various products by replacing the second supporting ring and adjusting the size of the inner hole of the second supporting ring, and the design can reduce the number of spare parts of the auxiliary mold and reduce the machining and manufacturing cost of the mold.

Description

Technical Field

[0001] The utility model relates to the technical field of flange molds, in particular to a combined hot forming flange mold. Background Art

[0002] Thermoforming is a relatively special plastic processing method for processing thermoplastic sheets into various products.

[0003] The existing hot forming flange mold includes a punch, a die and a pressing sleeve. A support block is arranged inside the pressing sleeve to support the die. During the actual production process, the die often has defects such as longitudinal cracks and fatigue fractures on the upper section. In order to ensure product quality, the die mold needs to be frequently replaced. The existing die mold is an integral whole, and the entire die is scrapped and replaced, increasing the use cost of the equipment. Moreover, in order to apply different products, the inner diameters of the support blocks are different, and the entire support block needs to be replaced when replacing the support block. Summary of the Utility Model

[0004] To solve the technical problems in the background art, the utility model proposes a combined hot forming flange mold.

[0005] A combined hot forming flange mold proposed by the utility model includes a punch, and also includes a die assembly and a pressing assembly. The die assembly is located inside the pressing assembly;

[0006] The pressing assembly includes a pressing outer sleeve, and a support assembly is arranged inside the pressing outer sleeve. The die assembly is located above the support assembly;

[0007] The support assembly includes a first support ring, and a second support ring is arranged inside the first support ring.

[0008] Preferably, a stepped groove is formed inside the first support ring, and the outer circumference of the second support ring matches the inner cavity of the first support ring.

[0009] Preferably, a pressing ring is installed on the pressing outer sleeve. [[ID=XX]]

[0010] Preferably, the die assembly includes a die outer ring, and a die inner ring is arranged inside the die outer ring.

[0011] Preferably, an annular water groove is formed on the outer circumference of the die outer ring.

[0012] Preferably, the inner wall radius of the die outer ring gradually increases from top to bottom.

[0013] Preferably, a press-fitting protrusion is arranged on the inner wall of the pressing outer sleeve. The die outer ring is located between the press-fitting protrusion and the first support ring. The press-fitting protrusion and the pressing outer sleeve are integrally formed.

[0014] In the present invention, the combined thermoforming flange mold proposed has the following beneficial technical effects:

[0015] The die assembly adopts a split design. When the inner ring of the die has scrap cracks and irreparable defects, it is only necessary to replace the inner ring of the die without scrapping the entire die, which greatly saves the material usage of the die maintenance and reduces the cost of equipment use. When producing different products, by replacing the second support ring and adjusting the size of the inner hole of the second support ring, it can be applied to a variety of products. This design can reduce the number of spare parts of the auxiliary die and reduce the processing and manufacturing cost of the die.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is the front view of the structure of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the die assembly and the pressing assembly of the utility model.

[0019] In the figure, 1, punch; 2, die assembly; 3, clamping assembly; 21, die outer ring; 22, die inner ring; 23, annular water trough; 31, clamping sleeve; 32, support assembly; 33, clamping ring; 34, press-fitting protrusion; 321, first support ring; 322, second support ring; 323, stepped groove; DETAILED DESCRIPTION

[0020] The following describes in detail embodiments of the present invention. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar symbols throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention, and should not be construed as limiting the present invention.

[0021] like Figure 1 - Figure 2 The combined thermoforming flange mold shown includes a male mold 1, a female mold assembly 2 and a pressing assembly 3, wherein the female mold assembly 2 is located inside the pressing assembly 3;

[0022] The pressing assembly 3 includes a pressing jacket 31, and a support assembly 32 is provided in the pressing jacket 31, and the die assembly 2 is located above the support assembly 32;

[0023] The support assembly 32 includes a first support ring 321 , and a second support ring 322 is disposed inside the first support ring 321 .

[0024] The top of the punch 1 is threadedly connected to the slide of the moving press. There is a cavity inside the punch 1 for water cooling. Water cooling during production can reduce the temperature of the punch 1 and increase the service life of the punch 1. The bottom step of the punch 1 is set with a certain slope to facilitate demoulding and prevent the blank from being stuck on the upper punch 1, making it difficult to unload.

[0025] The die assembly 2 adopts a split design. When the die inner ring 22 has scrap cracks and irreparable defects, it is only necessary to replace the die inner ring 22 without scrapping the entire die, which greatly saves the material usage for mold maintenance and reduces the cost of equipment use. When producing different products, by replacing the second support ring 322 and adjusting the inner hole size of the second support ring 322, it can be suitable for a variety of products. This design can reduce the number of spare parts of the auxiliary mold and reduce the processing and manufacturing cost of the mold.

[0026] A further improvement of the technical solution is that a stepped groove 323 is provided in the first support ring 321 , and the outer periphery of the second support ring 322 matches the inner cavity of the first support ring 321 .

[0027] The support assembly 32 is press-fitted into the compression sleeve 31 .

[0028] A compression ring 33 is mounted on the compression sleeve 31 .

[0029] A further improvement of the technical solution is that the die assembly 2 includes a die outer ring 21, and a die inner ring 22 is provided inside the die outer ring 21;

[0030] A further improvement of the technical solution is that an annular water groove 23 is provided on the outer periphery of the outer ring 21 of the die. The annular water groove 23 is a water groove for water cooling, which is used to cool the die assembly 2, control the temperature of the die during the hot extrusion process, and extend the service life of the die.

[0031] Through the split structural design of the clamping component 3 and the die component 2, when scrap cracks and irreparable defects appear on the inner cross-section radius of the inner ring 22 of the die during the use of the mold, it is only necessary to replace the component to enter normal production without scrapping the entire die. Therefore, this method greatly saves the material usage for mold maintenance and reduces the cost of using the mold equipment.

[0032] A further improvement to the technical solution is that the inner wall radius of the die outer ring 21 gradually increases from top to bottom, forming a tapered surface with a smaller top and a larger bottom, while the radius of the die inner ring 22 gradually decreases from top to bottom. The die outer ring 21 and the die inner ring 22 are press-fitted together using this tapered pre-tightening method.

[0033] The outer ring 21 of the die and the inner ring 22 of the die are press-fitted by pre-tightening a conical surface with a smaller upper portion and a larger lower portion, thereby ensuring the positioning accuracy of the die and facilitating the assembly and disassembly of the die.

[0034] A further improvement of the technical solution lies in that a press-fitting protrusion 34 is provided on the inner wall of the pressing outer sleeve 31, the outer die ring 21 is located between the press-fitting protrusion 34 and the first support ring 321, and the press-fitting protrusion 34 and the pressing outer sleeve 31 are integrally formed;

[0035] The outer die ring 21 is press-fitted between the pressing outer sleeve 31 and the first support ring 321.

[0036] The outer die ring 21 and the inner die ring 22 are tightly fitted by a tapered surface that is larger at the bottom and smaller at the top. After pressing, the upper cross-section of the inner die ring 22 is machined on a lathe to the required drawing size height, and the lower plane is flush with the lower plane of the outer die ring 21.

[0037] There is a water-cooling tank for water cooling on the outside of the outer die ring 21 to cool the outer die mold.

[0038] A certain draft angle is set on the inner ring of the outer die ring 21 to facilitate the ejection of the blank and avoid the problem of the core bulging during the ejection of the blank due to excessive friction.

[0039] The inner and outer rings of the upper cross-section of the inner die ring 22 are parts prone to wear. During normal production, the temperature of this part is relatively high and the wear is relatively fast. When the wear reaches the scrap limit, the inner die ring 22 can be removed and replaced with a new inner die ring 22.

[0040] The material pad is installed on the ejector rod of the equipment ejector device. After forging, the formed blank is ejected from the outer die. This split design method greatly reduces the usage amount of die materials and significantly reduces the usage cost of the die.

[0041] During the hot forming process, the blank is placed in the outer die assembly 2, and the punch 1 moves downward driven by the moving press slider to cooperate with the outer die assembly 2 for hot forming operations. After forging, the material pad ejects the formed blank from the outer die under the action of the ejector rod of the equipment ejector device, entering the next production cycle.

[0042] At the same time, the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0043] It should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is 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 operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0044] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0045] In the present utility model, unless otherwise clearly specified and defined, terms such as "installed", "connected", "coupled", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0046] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0047] The above is only the preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and shall be covered by the protection scope of the present utility model.

Claims

1. A combined hot forming flange die, comprising a punch (1), characterized in that, It further includes a female die assembly (2) and a pressing assembly (3), and the female die assembly (2) is located inside the pressing assembly (3); The pressing assembly (3) includes a pressing outer sleeve (31), and a support assembly (32) is arranged inside the pressing outer sleeve (31). The female die assembly (2) is located above the support assembly (32); The support assembly (32) includes a first support ring (321), and a second support ring (322) is arranged inside the first support ring (321).

2. The combined hot forming flange die according to claim 1, characterized in that A stepped groove (323) is formed inside the first support ring (321), and the outer periphery of the second support ring (322) matches the inner cavity of the first support ring (321).

3. The combined hot forming flange die according to claim 1, wherein, A pressing ring (33) is installed on the pressing outer sleeve (31).

4. The combined hot forming flange die according to claim 1, characterized in that, The female die assembly (2) includes a female die outer ring (21), and a female die inner ring (22) is arranged inside the female die outer ring (21).

5. The combined hot forming flange mold according to claim 4, characterized in that, An annular water groove (23) is formed on the outer periphery of the female die outer ring (21).

6. The combined hot forming flange die according to claim 4, wherein, The inner wall radius of the female die outer ring (21) gradually increases from top to bottom.

7. The combined hot forming flange die according to claim 4, wherein Pressing protrusions (34) are arranged on the inner wall of the pressing outer sleeve (31). The female die outer ring (21) is located between the pressing protrusions (34) and the first support ring (321). The pressing protrusions (34) and the pressing outer sleeve (31) are integrally formed.

Images