Hot press forming die
By designing a hot-pressing mold that is paired with upper pressing head and step groove, the problems of low pressing efficiency and large mold weight of traditional circular products are solved, and the one-time molding and production efficiency of multiple products are improved.
Patent Information
- Application Number
- CN202323429557.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-15
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2033-12-15
AI Technical Summary
In the traditional hot press forming process, the pressing efficiency of circular products is low, and the existing molds are heavy and difficult to fill, so it is impossible to mold multiple products in one piece at a time.
A hot-press forming mold including pairs of upper press heads is designed to achieve disassembly and weight reduction of the mold by assembling the middle mold and inner core, using step grooves and friction material blocks, and increasing production efficiency.
It realizes the molding of multiple products at one time, reducing the difficulty of filler and mold weight, improving production efficiency, and ensuring product performance.
Smart Images
Figure CN222178835U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a mould, in particular to a hot pressing mould. Background Art
[0002] The statements herein merely provide background art related to the present invention and do not necessarily constitute prior art.
[0003] The basic principle of the hot pressing process is to heat the material to a certain temperature to make it soft and easy to mold, then put it into a mold and shape it under high pressure. This process can be used to manufacture parts and products of various shapes, among which the annual consumption of circular ring products is relatively large.
[0004] The inventors understand the following defects of the prior art:
[0005] (1) For the pressing of round products, the traditional process uses a single mold to press, and only one product can be formed at a time, which has low production efficiency;
[0006] (2) The existing round product pressing mold needs to add friction powder and molding products into the mold from top to bottom. The mold needs to provide depth to ensure the downward pressure of the product. However, the mold is long and the overall weight of the mold is large, which will increase the difficulty of filling. Utility Model Content
[0007] The utility model provides a hot pressing forming mold, comprising an upper pressure head arranged in pairs, wherein the two ends of the upper pressure head are respectively arranged between a mold outer core and a mold inner core, wherein the mold outer core is formed by splicing a first outer core, a second outer core and a third outer core in sequence from bottom to top, wherein the mold inner core is formed by splicing a first inner core, a second inner core and a third inner core in sequence from bottom to top, wherein a first bottom plate and a friction material block are arranged in sequence from bottom to top between the first inner core and the second outer core, wherein a second bottom plate and a friction material block are arranged in sequence from bottom to top between the second inner core and the second outer core, and wherein a third bottom plate and a friction material block are arranged in sequence from bottom to top between the third outer core and the third outer core.
[0008] The upper ends of the first outer core and the first inner core are provided with stepped grooves.
[0009] The second outer core and the second inner core are provided with stepped grooves at both upper and lower ends.
[0010] The lower ends of the third outer core and the third inner core are provided with stepped grooves.
[0011] The upper pressure head is perpendicular to the friction material block, and the upper pressure head abuts against the friction material block.
[0012] The third outer core is longer than the second outer core, and the second outer core is longer than the first outer core.
[0013] The third inner core is longer than the second inner core, and the second inner core is longer than the first inner core.
[0014] The friction material block is formed by flattening the friction powder and forming a pressed arc product after being pressed.
[0015] The block of friction material is compressible.
[0016] The distance between the outer core of the mold and the inner core of the mold is greater than the diameter of the upper pressing head.
[0017] Beneficial effects of one or more of the above technical solutions:
[0018] (1) It replaces the traditional one-piece molding method. By assembling the middle mold and the inner core of the middle mold, the thickness of the annular product is calculated to be about 3-5mm. Hot pressing molding will not affect the performance of the product itself. Multiple products can be molded at one time, greatly increasing production capacity.
[0019] (2) Reduce the difficulty of filling, because the middle mold can be disassembled. When demolding, the middle mold can be disassembled to reduce the height of the upper punch in the mold, reduce the overall mold weight, and reduce the work intensity. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] The drawings in the specification, which constitute a part of the present application, are used to provide a further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute a limitation on the present application.
[0021] Figure 1 It is a structural schematic diagram of the utility model.
[0022] Figure 2 This is a schematic diagram of the assembly structure of the first outer core and the second inner core of Example 1.
[0023] Figure 3 This is a schematic diagram of the assembly structure of the first outer core and the second outer core in Example 1.
[0024] Figure 4 This is a schematic diagram of the assembly structure of the second outer core and the third outer core in Example 1.
[0025] In the figure, 1 is an upper pressure head;
[0026] 2 mold outer core; 21 first outer core; 22 second outer core; 23 third outer core;
[0027] 3 mold inner core 3; 31 first inner core; 32 second inner core; 33 third inner core;
[0028] 4 third bottom plate; 5 second bottom plate; 6 first bottom plate; 7 friction material block; 8 step groove. DETAILED DESCRIPTION
[0029] The specific implementation of this embodiment is described below in conjunction with the accompanying drawings.
[0030] Embodiment 1:
[0031] Please refer to Figure 1 A hot pressing forming mold comprises an upper pressing head 1 arranged in pairs, and the two ends of the upper pressing head 1 are respectively arranged between the mold outer core 2 and the mold inner core 3. The mold outer core 2 is composed of a first outer core 21, a second outer core 22 and a third outer core 23 spliced from bottom to top, and the inner core is composed of a first inner core 31, a second inner core 32 and a third inner core 33 spliced from bottom to top. A first bottom plate 6 and a friction material block 7 are arranged in sequence from bottom to top between the first inner core 31 and the second outer core 21, a second bottom plate 5 and a friction material block 7 are arranged in sequence from bottom to top between the second inner core 32 and the second outer core 22, and a third bottom plate 4 and a friction material block 7 are arranged in sequence from bottom to top between the third inner core 33 and the third outer core 23. By assembling the mold outer core 2 and the mold inner core 3, the difficulty of filling is reduced because the mold can be disassembled. When demolding, the third outer core 23 and the third inner core 33 are removed, which can reduce the punch height and reduce the weight of the mold as a whole. Multiple products can be formed at one time, and the production efficiency is high.
[0032] Please refer to Figure 1 The first outer core 21 and the first inner core 31 have a stepped groove 8 at their upper ends.
[0033] Please refer to Figure 1 The second outer core 22 and the second inner core 32 are both provided with stepped grooves 8 at the upper and lower ends.
[0034] Please refer to Figure 3 and Figure 4 A stepped groove 8 is provided at the lower end of the third outer core 23 and the third inner core 33. When installing, the second outer core 22 and the second inner core 32 are arranged in the middle. The second outer core 22 is assembled with the third outer core 23 upward through the stepped groove 8, and the second outer core 22 is assembled with the first outer core 21 downward. The second inner core 32 is assembled with the third inner core 33 upward through the stepped groove 8, and the second inner core 32 is assembled with the first inner core 31 downward.
[0035] Please refer to Figure 1 The upper pressing head 1 is vertically placed into the middle mold to apply pressure to the friction material block. The upper pressing head 1, the first bottom plate 4, the second bottom plate 5 and the third bottom plate 5 as well as the friction material blocks 7 between the bottom plates can all be subjected to pressure to press out products of the required thickness, ensuring that multiple products can be formed after one pressurization.
[0036] Please refer to Figure 1The third outer core 23 is longer than the second outer core 22, and the second outer core 22 is longer than the first outer core 21; the third inner core 33 is longer than the second inner core 32, and the second inner core 32 is longer than the first inner core 31. Because the mold can be disassembled, the third outer core 23 and the third inner core 33 are removed during demolding, which can reduce the upper punch height of the upper pressure head 1 and reduce the overall mold weight.
[0037] Please refer to Figure 1 Since the required product thickness is between 3-5mm, after calculation, heat transfer will not be affected. This design will not affect the performance of the product, but will also greatly increase production capacity.
[0038] The friction material block 7 is compressed and formed after receiving pressure, wherein the friction material block 7 is formed by mixing various powder materials and clamped between the bottom plates. During the hot pressing molding, the friction material block 7 is compressed into the required arc product.
[0039] The outer core 2 and the inner core 3 of the mold should have a gap of 0.1 to 0.2 mm with the upper punch 1 to ensure the clearance between the upper pressure head 1 and the inner and outer cores. The gap should not be too large to prevent powder overflow, and the gap should not be too small to affect the exhaust during the pressing process of the composite material.
[0040] Working principle:
[0041] See also Figure 2 First, assemble the first outer core 21, the first inner core 31, and the first bottom plate 6, add powder into them, and after adding, flatten the powder to form a friction material block 7;
[0042] See also Figure 3 Then, assemble the second outer core 22 and the second inner core 32 on the first inner core 31 and the first outer core 21, and then put in the second bottom plate 5, and then put in the powder material to flatten it to form a friction material block 7, and put in the second bottom plate 5;
[0043] See also Figure 1 and Figure 4 Then, the third outer core 23 and the third inner core 33 are further assembled on the second outer core 22 and the second outer core 32, the third bottom plate 4 is placed, and then the friction material is put in to flatten to form a friction material block 7. Finally, the hot press applies pressure to the upper pressure head 1, and the friction material block 7 is compressed to form a pressed arc product. This can quickly improve the production efficiency, because the mold can be disassembled, and the third inner core 33 and the third outer core 23 are removed during demolding, which can reduce the upper punch height in the mold and reduce the overall mold weight.
[0044] Although the above describes the specific implementation methods of the utility model in combination with the accompanying drawings, it is not intended to limit the scope of protection of the utility model. Technical personnel in the relevant field should understand that on the basis of the technical solution of the utility model, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the utility model.
Claims
1. A hot pressing mold, characterized in that: It comprises an upper pressure head arranged in pairs, wherein two ends of the upper pressure head are respectively arranged between a mold outer core and a mold inner core, wherein the mold outer core is formed by splicing a first outer core, a second outer core and a third outer core in sequence from bottom to top, and the mold inner core is formed by splicing a first inner core, a second inner core and a third inner core in sequence from bottom to top, wherein a first bottom plate and a friction material block are arranged in sequence from bottom to top between the first inner core and the second outer core, wherein a second bottom plate and a friction material block are arranged in sequence from bottom to top between the second inner core and the second outer core, and wherein a third bottom plate and a friction material block are arranged in sequence from bottom to top between the third outer core and the third outer core.
2. The hot pressing mold according to claim 1, characterized in that: The upper ends of the first outer core and the first inner core are provided with stepped grooves.
3. The hot pressing mold according to claim 1, characterized in that: The second outer core and the second inner core are provided with stepped grooves at both upper and lower ends.
4. The hot pressing mold according to claim 1, characterized in that: The lower ends of the third outer core and the third inner core are provided with stepped grooves.
5. The hot pressing mold according to claim 1, characterized in that: The upper pressing head is perpendicular to the friction material block, and the upper pressing head abuts against the friction material block.
6. The hot pressing mold according to claim 1, characterized in that: The third outer core is longer than the second outer core, and the second outer core is longer than the first outer core.
7. The hot pressing mold according to claim 1, characterized in that: The third inner core is longer than the second inner core, and the second inner core is longer than the first inner core.
8. The hot pressing mold according to claim 1, characterized in that: The friction material block is formed by flattening the friction powder and forming a pressed arc product after being pressed.
9. The hot pressing mold according to claim 1, characterized in that: The block of friction material is compressible.
10. The hot pressing mold according to claim 1, characterized in that: The distance between the outer core of the mold and the inner core of the mold is greater than the diameter of the upper pressing head.