Combined structure mold for large-size super-high cylinder product

Abstract

The utility model relates to powder metallurgy mould technical field, concretely is a kind of combined structure mould of large-size superhigh cylinder product, mainly includes, combined mould body, by mould body lower assembly and mould body upper assembly component;Combined core rod, by core rod upper assembly and core rod lower assembly component;Combined punch, by punch lower assembly and punch upper assembly component;Compaction, fill between core rod lower assembly and mould body lower assembly, and compaction is located below punch lower assembly;Ejection assembly is used to carry out ejection to compaction, and ejection assembly includes core rod ejection device, and core rod ejection device is located below combined mould body.Mould body lower assembly, core rod lower assembly and punch lower assembly of combined mould body can be made into several different height series parts in the way of ladder, can select appropriate mould body lower assembly, core rod lower assembly and punch lower assembly according to product height, select appropriate press according to the closed height of press, reach the purpose of reducing cost and increasing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of powder metallurgy mold technology, specifically a combined structure mold for large-size ultra-tall cylindrical products. Background Technology

[0002] Currently, the molds for large-size ultra-tall cylindrical products are large in size, have high assembly height, are bulky, require high strength from operators, have large and long outer diameters, and are difficult to process and clamp. There are also safety hazards when grinding the inner holes. Meanwhile, for shorter products of the same diameter series, the powder filling depth is too deep, which can easily cause uneven powder scraping by operators, resulting in large density differences in local areas of the pressed blank. Throughout the pressing process, the closing height of the machine must be greater than the sum of the height of the mandrel ejector, the mold body, and the punch. Therefore, when selecting a hydraulic press, a machine with a high closing height is often required to meet the requirements, which increases costs. In addition, the mandrel must be completely detached from the mold, so the height of the ejector must be higher than the mandrel. At this point, for ultra-high products, the height of the ejector plus the height of the mold and the height of the mandrel exceeds the press stroke, so the integral mandrel cannot be ejected from the mold body. Furthermore, if the mandrel cannot be completely detached from the mold, this type of ultra-high product cannot be produced. Utility Model Content

[0003] The purpose of this utility model is to provide a combined structure mold for large-size ultra-tall cylindrical products to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A combined structure mold for a large-size, ultra-tall cylindrical product includes: A modular mold, comprising a lower mold component and an upper mold component, wherein the lower mold component is constructed in a stepped manner to several different heights; A modular core rod is disposed inside the modular mold body. The modular core rod consists of an upper core rod assembly and a lower core rod assembly disposed below the upper core rod assembly. The lower core rod assembly is made into several different heights in a stepped manner. The combined punch consists of a lower punch assembly disposed between the upper component of the mold body and the upper component of the core rod, and an upper punch assembly disposed above the lower punch assembly. The lower punch assembly is made into several different heights in a stepped manner. A blank is filled between the lower mandrel assembly and the lower mold assembly, and the blank is located below the lower punch assembly; A demolding assembly for demolding the pressed blank, the demolding assembly including a core rod demolding device located below the combined mold body.

[0005] Preferably, the upper end of the inner wall of the lower component of the mold is provided as a stepped surface, and the step position is higher than the upper end of the pressed blank.

[0006] Preferably, the lower end of the outer wall of the upper component of the mold body is provided with a stepped surface that is in clearance fit with the stepped surface of the inner wall of the lower component of the mold body; Both the lower and upper components of the mold have two sets of symmetrically distributed threaded holes on their sides, and the handles can be screwed into the threaded holes.

[0007] Preferably, the lower outer diameter of the punch lower assembly is in clearance fit with the combined mold body, and the inner hole of the punch lower assembly is in clearance fit with the combined core rod.

[0008] Preferably, the upper end of the inner wall of the punch lower component is provided as a stepped surface, and the lower end of the outer wall of the punch upper component is provided with a stepped surface that is in clearance fit with the stepped surface of the inner wall of the punch lower component.

[0009] Preferably, the outer diameter of the upper component of the punch is smaller than the inner step hole diameter of the lower component of the punch.

[0010] Preferably, the combined core rod and the combined mold body are at the same height; The height of the lower core assembly is approximately 20 mm higher than the height of the pressed blank.

[0011] Preferably, the upper end of the inner hole of the lower core component is provided as a stepped surface, and the lower end of the outer wall of the upper core component is provided with a stepped surface that is clearance-fitted with the stepped surface of the inner hole of the lower core component.

[0012] Preferably, the upper end of the component on the core rod is provided with a threaded hole, and a lifting ring is screwed into the threaded hole; The outer diameter of the upper component of the core rod is smaller than the outer diameter of the lower component of the core rod.

[0013] Preferably, a base pad is provided above the core rod demolding device, and a circular hole is provided on the base pad, the inner diameter of which is larger than the outer diameter of the combined core rod; The height of the core rod demolding device is higher than that of the lower core rod assembly; A limiter is provided above the component on the mold body, and the limiter is sleeved on the outside of the punch component.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. The lower components of the combined mold are made into several series of parts with different heights in a stepped manner. This allows for the selection of appropriate lower components based on the actual product height, and consequently, the selection of appropriate presses based on the press's closing height and press stroke, thereby achieving the goal of cost reduction and efficiency improvement. 2. The lower punch component serves as the initial punch during pressing. After the initial pressing, it is placed under the press head of the press. Then, the upper punch component and limiter are placed on top for secondary pressing. Compared with the integral punch pressing method, the press head of the press can stay at a lower position during the secondary pressing, and higher products can be pressed due to different mold structures. The punch lower assembly is made into several different height series of parts in a stepped manner. This allows the appropriate punch lower assembly to be selected according to the actual product height, and thus the appropriate press to be selected according to the press closing height and press stroke, thereby achieving the purpose of reducing costs and increasing efficiency. 3. Making the core rod into a modular design can reduce the processing difficulty due to the excessive length of the overall core rod, and hollowing out the components can reduce weight and reduce the labor intensity of the pressing operators; 4. The core rod lower assembly is made into several different height series of parts in a stepped manner, so that the appropriate core rod lower assembly can be selected according to the actual product height. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the combined structure mold of this utility model; Figure 2 This is a schematic diagram of the combined phantom structure of this utility model; Figure 3 This is a schematic diagram of the combined punch structure of this utility model; Figure 4 This is a schematic diagram of the combined core rod structure of this utility model.

[0016] In the diagram: 1. Core rod demolding device; 2. Base pad; 3. Blank; 4. Modular mold body; 401. Lower mold body component; 402. Upper mold body component; 5. Handle; 6. Limiter; 7. Lifting ring; 8. Modular punch; 801. Upper punch component; 802. Lower punch component; 9. Modular core rod; 901. Upper core rod component; 902. Lower core rod component. Detailed Implementation

[0017] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0018] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0019] like Figures 1-4As shown, this application provides a combined structure mold for a large-size ultra-tall cylindrical product, including...

[0020] The modular module 4 is composed of a lower module component 401 and an upper module component 402. The lower module component 401 is made into several different heights in a stepped manner. The height of the combined mold 4 = 2.5 × the height of the blank 3 + 10, and the result is rounded to a multiple of 10 or 5. The upper end of the inner wall of the lower component 401 of the mold body is set as a stepped surface, and the step position is 20mm higher than the upper end of the blank 3; The lower end of the outer wall of the upper component 402 of the mold body is provided with a stepped surface that is in clearance fit with the stepped surface of the inner wall of the lower component 401 of the mold body; The outer walls of the lower component 401 and the upper component 402 of the mold have 3° and 2mm guide slopes at the stepped surfaces; The inner hole of the upper component 402 of the mold body is 0.05 mm larger than the inner hole of the lower component 401 of the mold body; Both the lower component 401 and the upper component 402 of the mold body have two sets of symmetrically distributed threaded holes on their sides, and the handle 5 can be screwed into the threaded holes.

[0021] Specifically, such as Figure 3 As shown, after pressing, the height of the punch lower component 802 should be 10mm lower than the upper end face of the combined mold body 4 to ensure that the initial pressing of the punch lower component 802 is too deep, thereby ensuring the height of the pressed blank 3. The lower outer diameter of the punch lower assembly 802 is clearance-fitted with the combined mold body 4, and the inner hole of the punch lower assembly 802 is clearance-fitted with the combined core rod 9. The upper end of the inner wall of the punch lower component 802 is provided as a stepped surface, and the lower end of the outer wall of the punch upper component 801 is provided with a stepped surface that is in clearance fit with the stepped surface of the inner wall of the punch lower component 802. The outer diameter of the upper punch assembly 801 is 0.1 mm smaller than the outer diameter of the lower punch assembly 802; The stepped surfaces of both the upper punch assembly 801 and the lower punch assembly 802 are chamfered to ensure that the upper punch assembly 801 can slide into the lower punch assembly 802.

[0022] Specifically, such as Figure 4 As shown, the combined core rod 9 and the combined mold 4 are at the same height; The height of the lower core rod assembly 902 is 10mm higher than the height of the blank 3; The upper end of the inner hole of the lower core rod assembly 902 is provided with a stepped surface, and the lower end of the outer wall of the upper core rod assembly 901 is provided with a stepped surface that is in clearance fit with the stepped surface of the inner hole of the lower core rod assembly 902. The outer wall of the stepped surface of both the upper core rod assembly 901 and the lower core rod assembly 902 is provided with a 3° and 2mm guide slope, which facilitates the insertion of the upper core rod assembly 901 into the lower core rod assembly 902. The upper end of the core rod assembly 901 is provided with a threaded hole, and a lifting ring 7 is screwed into the threaded hole; The outer diameter of the upper core assembly 901 is 0.05 mm smaller than the outer diameter of the lower core assembly 902.

[0023] Specifically, such as Figure 1 As shown, a positioning ring is provided above the core rod demolding device 1. A circular hole is provided on the positioning ring. The inner diameter of the circular hole is larger than the inner diameter of the combined mold body 4, which facilitates the placement of the combined mold body 4 and prevents the mold body from shifting during mold pressing and demolding. The height of the core rod demolding device 1 is higher than that of the lower core rod assembly 902, which facilitates the lower core rod assembly 902 falling below the core rod demolding device 1. A limiter 6 is provided above the upper component 402 of the mold body, and the limiter 6 is sleeved on the outside of the punch component 801.

[0024] The limiter 6 restricts the height of the press head when the press head of the press extrudes the punch assembly 801.

[0025] The specific solution is as follows: Based on the height of the blank 3, select a suitable height for the lower mold assembly 401, the lower punch assembly 802, and the lower core rod assembly 902. Then place the bottom pad 2, insert the lower core rod assembly 902 into the inner hole of the bottom pad 2, and then fit the lower mold assembly 401 onto the positioning ring with the same clearance fit. Then place the upper core rod component 901 on the lower core rod component 902, and place the upper mold component 402 on the lower mold component 401.

[0026] Material powder for pressing products is loaded into the cavity formed by the lower core rod component 902 and the lower mold body component 401. The outer wall of the combined mold body 4 is gently tapped to make the material powder fill evenly. Then, the lower punch component 802 is placed between the combined mold body 4 and the combined core rod 9 for pre-pressing. Then start the manual press and press until the upper end face of the lower punch component 802 is flush with the upper end face of the upper mold component 402. Then release the press button, retract the press head, place the limiter 6 on the upper mold component 402, place the upper punch component 801 on the lower punch component 802, start the manual press and press to the pressing height determined by the limiter 6. Remove the limiter 6, punch assembly 801, and mold lower assembly 401. Then, use the lifting ring 7 to lift the upper assembly 901 of the core rod from the combined mold body 4. Place a demolding ejector pin of appropriate height above the lower assembly 902 of the core rod, and place a sponge of appropriate height below the core rod demolding device 1. Then, start the press to press the lower assembly 902 of the core rod out from inside the combined mold body 4 and drop it into the sponge below the core rod demolding device 1, thus completing the demolding of the lower assembly 902 of the core rod. Place the lower core rod assembly 902 in reverse on the press worktable, then flip the combined mold body 4 as a whole and place it in the corresponding position of the lower core rod assembly 902. Then place the demolding ring that is slightly higher than the limiter 6, and push the blank 3 out from the lower mold body assembly 401 to complete the demolding of the blank.

[0027] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary; within the framework of this invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of this invention as described above, which are not provided in the details for the sake of brevity.

[0028] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A combined structure mold for a large-size, ultra-tall cylindrical product, characterized in that, include: The modular module (4) is composed of a lower module component (401) and an upper module component (402). The lower module component (401) is made into several different heights in a stepped manner. A modular core rod (9) is disposed inside the modular mold (4). The modular core rod (9) consists of an upper core rod assembly (901) and a lower core rod assembly (902) disposed below the upper core rod assembly (901). The combined punch (8) consists of a lower punch assembly (802) disposed between the upper die assembly (402) and the upper core rod assembly (901) and an upper punch assembly (801) disposed above the lower punch assembly (802); A blank (3) is filled between the lower core rod assembly (902) and the lower mold assembly (401), and the blank (3) is located below the lower punch assembly (801); A demolding assembly for demolding the blank (3) includes a core rod demolding device (1) located below the combined mold body (4).

2. The combined structure mold for a large-size ultra-tall cylindrical product according to claim 1, characterized in that, One end of the inner wall of the lower component (401) of the mold body is set as a stepped surface, and the step position is about 20mm higher than the upper end of the blank (3).

3. The combined structure mold for a large-size ultra-tall cylindrical product according to claim 2, characterized in that, One end of the outer wall of the upper component (402) of the mold body is provided with a stepped surface that is in clearance fit with the stepped surface of the inner wall of the lower component (401) of the mold body; The lower component (401) and the upper component (402) of the mold body are provided with two sets of symmetrically distributed threaded holes on their sides, and the handle (5) can be screwed into the threaded holes.

4. The combined structure mold for a large-size ultra-tall cylindrical product according to claim 1, characterized in that, The lower outer diameter of the punch lower assembly (802) is clearance-fitted with the combined mold body (4), and the inner hole of the punch lower assembly (802) is clearance-fitted with the combined core rod (9).

5. The combined structure mold for a large-size ultra-tall cylindrical product according to claim 4, characterized in that, One end of the inner wall of the lower punch assembly (802) is provided as a stepped surface, and one end of the outer wall of the upper punch assembly (801) is provided with a stepped surface that is in clearance fit with the stepped surface of the inner wall of the lower punch assembly (802).

6. The combined structure mold for a large-size ultra-tall cylindrical product according to claim 5, characterized in that, The outer diameter of the upper punch assembly (801) is smaller than the outer diameter of the lower punch assembly (802).

7. The combined structure mold for a large-size ultra-tall cylindrical product according to claim 1, characterized in that, The combined core rod (9) and the combined mold (4) are at the same height; The height of the lower core assembly (902) is higher than the height of the blank (3).

8. The combined structure mold for a large-size ultra-tall cylindrical product according to claim 7, characterized in that, One end of the inner hole of the lower core rod assembly (902) is set as a stepped surface, and one end of the outer wall of the upper core rod assembly (901) is provided with a stepped surface that is clearance-fitted with the stepped surface of the inner hole of the lower core rod assembly (902).

9. A combined structure mold for a large-size ultra-tall cylindrical product according to claim 8, characterized in that, The upper end of the core rod assembly (901) is provided with a threaded hole, and a lifting ring (7) is screwed into the threaded hole. The outer diameter of the upper core assembly (901) is smaller than the outer diameter of the lower core assembly (902).

10. A combined structure mold for a large-size ultra-tall cylindrical product according to claim 9, characterized in that, A bottom pad (2) is provided above the core rod demolding device (1), and a round hole is provided on the bottom pad (2). The inner diameter of the round hole is larger than the outer diameter of the combined core rod (9). The height of the core rod demolding device (1) is higher than that of the lower core rod assembly (902). A limiter (6) is provided above the upper component (402) of the mold body, and the limiter (6) is sleeved on the outside of the punch component (801).

Images