Die for stamping intermediate product to form closed insertion hoop

Abstract

The utility model belongs to the technical field of agricultural machinery part processing, and particularly relates to a die for stamping an intermediate product into a closed plug-in hoop, which comprises a lower die holder and an upper die holder, the lower die holder is provided with a lower die insert, a lower die supporting piece and a floating male die, the floating male die is movably mounted on the lower die insert, and the upper die holder is provided with a lower die supporting piece. An arc-shaped concave face is arranged in the middle of the upper face of the lower die material supporting piece. The floating male die comprises a male die base and a male die body perpendicularly installed on the side face of the male die base, and the male die body is cylindrical. The upper die base is provided with an upper die first insert and an upper die second insert. According to the utility model, the floating male die is adopted for forming and processing, the floating male die adopts the male die body with a cylindrical structure, the male die body cannot interfere with a product, the die does not influence the feeding and taking processes, the male die body cannot interfere with a flanging and an arc section of the product in the processing process, and the forming precision can also be ensured.

Description

Technical Field

[0001] This utility model relates to a mold for stamping intermediate products into closed plug-in clamps, belonging to the field of agricultural machinery parts processing technology. Background Technology

[0002] As one of the core components of large harvesters, the fan flange clamp is located inside the fan impeller assembly and is a closed plug-in structure. (See [link]). Figure 7 The closed-loop clamp has a near-circular structure. One side of the clamp is bent and inserted into the insertion hole on the other side. The closed-loop clamp is fixed to the blower flange, securing the flange and blower shaft together with high precision. The forming efficiency and precision of the closed-loop clamp are crucial for the assembly and use of the harvester; therefore, the manufacturing process and precision of the blower flange clamp are extremely important. One forming method for closed-loop clamps is die pressing. This requires three steps: first, the sides of the closed-loop clamp are formed to create the insertion structure; then, the arc-shaped center of the product is partially formed by stamping. Because there is a punch on top of the product, it cannot be directly stamped into a fully enclosed structure. Side shaping is required on both sides of the product in the final step, which can easily weaken the punch strength or cause the punch to interfere with the forming process.

[0003] Current mold forming processes use a method of forming the middle section first, followed by the sides, requiring three steps to complete the product forming. If, during the first forming stage, the material plate is formed into an intermediate product with rounded ends and a straight middle section, then the product can be processed as follows... Figure 6 The intermediate product shown has an arc-shaped section in the middle of the second-stage molding process. Therefore, when using existing molds for the second-stage molding process, the arc-shaped sections at both ends of the intermediate product formed in the first-stage molding process will interfere with the upper punch. In the existing technology, there is no way to prevent this interference. Figure 6 The intermediate product shown is processed into a mold for forming a closed plug-in clamp. Summary of the Invention

[0004] This utility model addresses the aforementioned technical problems of the prior art by providing a mold for stamping intermediate products into closed plug-in clamps.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0006] A die for stamping and forming a closed-loop clamping clamp for an intermediate product includes a lower die base and an upper die base. The lower die base is provided with a lower die insert, a lower die support, and a floating punch. The lower die insert is fixedly installed on the lower die base, the lower die support is movably installed on the lower die insert, and the floating punch is movably installed on the lower die insert. The upper center of the lower die support has an arc-shaped concave surface. The floating punch includes a punch seat and a punch body perpendicularly installed on the side of the punch seat. The punch body is cylindrical. The upper die base is provided with a first upper die insert and a second upper die insert. The first upper die insert is disposed corresponding to the punch seat, and the second upper die insert is disposed corresponding to the punch body.

[0007] The beneficial effects of this utility model are as follows: This utility model adopts a floating punch for forming processing. The floating punch adopts a cylindrical punch body. When the punch body presses down to form the middle arc segment of the clamp, the arcs at both ends of the middle product flip upward and finally hug the cylindrical punch body, completing the forming processing of the middle arc segment of the clamp. The punch body will not interfere with the product. Compared with the traditional processing method, the mold of this utility model does not affect the feeding and unloading process. During the processing, the punch body will not interfere with the side and arc segment of the product, and the forming accuracy can also be guaranteed.

[0008] Furthermore, the lower die insert is provided with a punch floating groove for mounting the floating punch, the punch floating groove is located on one side of the lower die support, and the punch seat is movably inserted into the punch floating groove.

[0009] The beneficial effect of adopting the above-mentioned further technical solution is that the floating punch is inserted into the floating punch groove, making the installation and movement of the floating punch more stable.

[0010] Furthermore, a lower die spring is provided on the bottom surface of the floating groove of the punch, and at least two lower die springs are provided.

[0011] The beneficial effects of adopting the above-mentioned further technical solution are as follows: the lower die spring provides support for the installation of the floating punch in the floating punch groove, and during the downward pressing process of the upper die seat, the first and second upper die inserts press on the floating punch and drive the floating punch downward. During the downward movement of the floating punch, the lower die spring is compressed, so that the floating punch moves downward stably. After processing is completed, the upper die seat moves upward, and the floating punch rises smoothly under the spring force of the lower die spring returning to its original position, and drives the clamping product on it to move upward, which facilitates the discharge of the product.

[0012] Furthermore, the upper side of the punch body is provided with a pressing plane, and the end face of the second insert of the upper die is a plane.

[0013] The beneficial effects of adopting the above-mentioned further technical solutions are as follows: Since the punch body is cylindrical, the cylindrical punch body is not conducive to the stability of the upper die seat when it moves downward. By setting the pressure plate, the stability of the second insert of the upper die on the punch body can be guaranteed, thereby ensuring the stability of the upper die seat driving the floating punch downward.

[0014] Furthermore, the end face of the first insert of the upper mold is a plane, the top surface of the punch seat is a plane, and there are two first inserts of the upper mold.

[0015] The beneficial effect of adopting the above-mentioned further technical solutions is to ensure the stability of the first insert of the upper die pressing on the punch seat.

[0016] Furthermore, the side of the punch seat is provided with a guide plate, and the inner wall of the punch floating groove is provided with a corresponding sliding surface.

[0017] The beneficial effect of adopting the above-mentioned further technical solution is that the cooperation between the guide plate and the guide surface provides guidance for the movement of the floating punch in the floating punch groove.

[0018] Furthermore, the lower mold insert is provided with two sets of side positioning components, which are respectively located at both ends of the lower mold support component, and each set includes two side positioning components arranged opposite to each other.

[0019] The beneficial effect of adopting the above-mentioned further technical solution is that the material plate placed on the lower mold support is positioned in the front and rear directions by the side positioning component, thus ensuring the processing accuracy.

[0020] Furthermore, the lower mold insert is provided with end positioning components, and two end positioning components are provided opposite to each other, with the two end positioning components respectively located at both ends of the lower mold support component.

[0021] The beneficial effect of adopting the above-mentioned further technical solution is that the end of the material plate placed on the lower mold support is positioned in the left and right directions by the end positioning component, so as to ensure the processing accuracy.

[0022] Furthermore, the lower mold base is provided with a guide post, and the upper mold base is provided with a corresponding guide sleeve, the diameter of the guide sleeve being larger than the outer diameter of the guide post.

[0023] The beneficial effect of adopting the above-mentioned further technical solution is that the cooperation of the guide post and the guide sleeve can guide the up and down movement of the upper die holder, and ensure the guiding accuracy of the die in the stamping direction.

[0024] Furthermore, the lower mold spring is a nitrogen spring. Attached Figure Description

[0025] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0026] Figure 2 This is a schematic diagram of the lower mold base.

[0027] Figure 3 This is a schematic diagram of the floating punch structure;

[0028] Figure 4 This is a schematic diagram of the upper mold base;

[0029] Figure 5 This is a schematic diagram of the product state after the pressing is completed according to this utility model;

[0030] Figure 6 A structural diagram of an intermediate product in sequence;

[0031] Figure 7 A schematic diagram of the structure of a closed-loop clamp;

[0032] Figure 8 This is a schematic diagram of the upper mold base in the closed state;

[0033] Figure 9 A schematic diagram of the process of forming an intermediate product into a closed plug-in clamp.

[0034] The reference numerals in the attached drawings are as follows: 300, lower die base; 301, lower die insert; 302, lower die support; 303, side positioning element; 304, lower die spring; 305, guide post; 306, end positioning element; 307, floating punch groove; 400, floating punch; 401, punch base; 402, punch body; 403, pressing surface; 500, upper die base; 501, first upper die insert; 502, second upper die insert; 503, guide sleeve. Detailed Implementation

[0035] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0036] See Figure 1-Figure 5A die for stamping a closed-loop clamp for an intermediate product includes a lower die base 300 and an upper die base 500. The lower die base 300 has a lower die insert 301, a lower die support 302, and a floating punch 400. The lower die insert 301 is fixedly mounted on the lower die base 300, and the lower die support 302 is movably mounted on the lower die insert 301. Specifically, the lower die insert 301 has a mounting groove for mounting the lower die support 302. The lower die support 302 is movably mounted in the mounting groove, and its height is higher than the height of the mounting groove. The mounting groove contains a material ejection spring and a material limiting screw. The top of the material ejection spring contacts the bottom surface of the lower die support 302. The material limiting screw is movably mounted on the lower die insert 301 and connected to the lower die support 302 to control the sliding of the lower die support 302 within the mounting groove. The device provides a limiting function to prevent the lower die support 302 from being ejected outside the mounting groove under the spring force of the ejector spring. The lower die support 302 has a guide plate on its side and a guide surface on the inner side of the mounting groove. The floating punch 400 includes a punch seat 401 and a punch body 402. The punch body 402 is installed perpendicularly to the upper part of the side of the punch seat 401 and is cylindrical. The floating punch 400 is movably installed on the lower die insert 301. Specifically, the lower die insert 301 has a punch floating groove 307 for installing the floating punch 400. The punch floating groove 307 is located on one side of the lower die support 302, that is, the mounting groove and the punch floating groove 307 are arranged side by side. The bottom of the punch seat 401 is movably inserted into the punch floating groove 307. The side of the punch seat 401 has a guide plate and a corresponding guide surface on the inner wall of the punch floating groove 307. The lower mold support 302 has an arc-shaped concave surface in the middle of its upper part. The two ends of the arc-shaped concave surface are flat, and an arc-shaped indentation is provided on the surface of this flat surface to facilitate... Figure 6 The placement of the arc segments at both ends of the intermediate product is shown. A lower die spring 304 is provided on the bottom surface of the punch floating groove 307. The top surface of the lower die spring 304 abuts against the punch seat 401. At least two lower die springs 304 are provided, and each lower die spring 304 is a nitrogen spring. Two sets of side positioning members 303 are provided on the lower die insert 301, respectively located at both ends of the lower die support member 302. Each set includes two oppositely arranged side positioning members 303. Two end positioning members 306 are provided on the lower die insert 301, respectively located at both ends of the lower die support member 302.

[0037] The upper mold base 500 is provided with an upper mold first insert 501 and an upper mold second insert 502. The upper mold first insert 501 is set to correspond to the punch base 401, and the upper mold second insert 502 is set to correspond to the punch body 402.

[0038] The upper side of the punch body 402 is provided with a pressing plane 403, and the end face of the second insert 502 of the upper die is a plane.

[0039] The end face of the first insert 501 of the upper die is a plane, and the top face of the punch seat 401 is a plane. There are two first inserts 501 of the upper die.

[0040] The lower mold base 300 is provided with a guide post 305, and the upper mold base 500 is provided with a corresponding guide sleeve 503. The diameter of the guide sleeve 503 is larger than the outer diameter of the guide post 305.

[0041] The processing procedure for this utility model is as follows:

[0042] 1. In the initial state, the upper mold base 500 is far away from the lower mold base 300, and the intermediate product material plate (see...) is placed... Figure 6 The material is placed on the lower die support 302 of the lower die base 300. The front and rear sides and left and right end faces of the material plate are positioned and limited by the side positioning parts 303 and the end positioning parts 306 respectively, so as to ensure the stability of the material plate during loading and stamping.

[0043] 2. After the material plate is placed stably, the upper die holder 500 moves downward, driving the first upper die insert 501 and the second upper die insert 502 to move downward. The first upper die insert 501 presses on the top surface of the punch holder 401, and the second upper die insert 502 presses on the pressing surface 403 of the punch body 402. The upper die holder 500 continues to move downward, driving the floating punch 400 to move downward and compressing the lower die spring 304, thus achieving the effect of floating pressing.

[0044] 3. The upper die holder 500 continues to descend until the punch body 402 contacts the straight section in the middle of the material plate. Then, the upper die holder 500 continues to descend, causing the punch body 402 and the lower die support 302 to jointly press the straight section of the material plate into an arc section, i.e., the mold closes. During this forming process, the arc sections at both ends of the material plate flip upwards to hug the cylindrical punch body 402, pressing it to form a closed, interlocking clamp shape (see...). Figure 7-8 );

[0045] 4. As the upper die holder 500 moves upward, the first upper die insert 501 and the second upper die insert 502 leave the punch holder 401 and the punch body 402, and the lower die spring 304 returns to its original position, thereby driving the floating punch 400 to move upward (see...). Figure 5 ,in, Figure 5 The middle punch body 402 has detached from the lower die holder 300. The floating punch 400 drives the product upward and away from the lower die support 302. Since the product is held on the punch body 402, it can slide to the end of the punch body 402 and be removed, which facilitates the removal of the product. Thus, the pressing and forming of the product is completed.

[0046] See Figure 9 This is a schematic diagram illustrating the process changes of the intermediate product of this utility model into a closed plug-in clamp product.

[0047] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A mold for stamping intermediate products into closed interlocking clamps, comprising a lower mold base (300) and an upper mold base (500), characterized in that, The lower die base (300) is provided with a lower die insert (301), a lower die support (302), and a floating punch (400). The lower die insert (301) is fixedly installed on the lower die base (300), the lower die support (302) is movably installed on the lower die insert (301), and the floating punch (400) is movably installed on the lower die insert (301). The lower die support (302) has an arc-shaped concave surface in the middle of its upper surface. The movable punch (400) includes a punch seat (401) and a punch body (402) perpendicularly mounted on the side of the punch seat (401). The punch body (402) is cylindrical. The upper die seat (500) is provided with an upper die first insert (501) and an upper die second insert (502). The upper die first insert (501) is provided corresponding to the punch seat (401), and the upper die second insert (502) is provided corresponding to the punch body (402).

2. The mold for stamping intermediate products into closed interlocking clamps according to claim 1, characterized in that, The lower die insert (301) is provided with a punch floating groove (307) for mounting the floating punch (400). The punch floating groove (307) is located on one side of the lower die support (302), and the punch seat (401) is movably inserted into the punch floating groove (307).

3. The mold for stamping intermediate products into closed insert clamps according to claim 2, characterized in that, The bottom surface of the punch floating groove (307) is provided with a lower die spring (304), and there are at least two lower die springs (304).

4. The mold for stamping intermediate products into closed interlocking clamps according to claim 3, characterized in that, The upper side of the punch body (402) is provided with a pressing plane (403), and the end face of the second insert (502) of the upper die is a plane.

5. The mold for stamping intermediate products into closed interlocking clamps according to claim 4, characterized in that, The end face of the first insert (501) of the upper mold is a plane, the top face of the punch seat (401) is a plane, and there are two first inserts (501) of the upper mold.

6. The mold for stamping intermediate products into closed insert clamps according to claim 5, characterized in that, The side of the punch seat (401) is provided with a guide plate, and the inner wall of the punch floating groove (307) is provided with a corresponding sliding surface.

7. The mold for stamping intermediate products into closed interlocking clamps according to claim 6, characterized in that, The lower mold insert (301) is provided with two sets of side positioning members (303), and the two sets of side positioning members (303) are respectively provided at both ends of the lower mold support member (302), each set including two side positioning members (303) arranged opposite to each other.

8. The mold for stamping intermediate products into closed insert clamps according to claim 7, characterized in that, The lower mold insert (301) is provided with an end positioning member (306), and two end positioning members (306) are provided opposite each other, with the two end positioning members (306) respectively located at both ends of the lower mold support member (302).

9. The mold for stamping intermediate products into closed interlocking clamps according to claim 8, characterized in that, The lower mold base (300) is provided with a guide post (305), and the upper mold base (500) is provided with a corresponding guide sleeve (503).

10. The mold for stamping intermediate products into closed interlocking clamps according to claim 9, characterized in that, The lower mold spring (304) is a nitrogen spring.

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