Forging and pressing forming die for lock nut

Abstract

The utility model provides a forging and pressing forming die for a lock nut, which comprises an upper die body and a lower die body, the upper die body and the lower die body can be folded to form a closed cavity for forming a blank, the bottom end of the upper die body is provided with a groove attached to the upper end face of the blank, and a convex column is connected in the groove. The lower surface of the protruding column is higher than or flush with the lower surface of the upper die body. The device is convenient to operate, during stamping, other parts of the die body firstly bear most impact force, then the convex column bears a small part of impact force, the structure of the convex column can be effectively protected, frequent replacement is not needed, the service life of the convex column is effectively prolonged, and the production cost is greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of forging and pressing processing technology, and specifically relates to a forging and pressing forming die for lock nut. BACKGROUND

[0002] The forging and pressing forming die is a die used in the forging and pressing forming process, and its main function is to make the metal blank produce plastic deformation under the action of external force, so as to obtain a part with the required shape and size. The forging and pressing forming die can be divided into a hot forging die, a warm forging die and a cold forging die according to different forging temperatures. Such a die plays a key role in the forging process and can improve production efficiency and the quality of forgings.

[0003] The patent with the publication number CN 214108653 U discloses a nut forging and pressing forming die, which comprises a die mounting box and a die panel. The die panel is located above the die mounting box. Rotating motors are fixedly connected to the front and rear sides of the die mounting box through bolts. Rotating gears are fixedly connected to the output ends of the two rotating motors and penetrate the die mounting box. Four fixed claws are slidingly embedded in the inner walls of the die mounting box.

[0004] However, the device still has the following problems: the punch is located at the end of the die. The temperature of the punch will gradually rise under the condition of long-term work, so it will soon be red-hot, causing the punch head to deform and be scrapped. If you want to produce again, you must make a new punch, which increases the cost. UTILITY MODEL CONTENT

[0005] In order to solve the problems existing in the prior art, a forging and pressing forming die for lock nut is provided. The device is easy to operate. During stamping, other parts of the die body first bear most of the impact force, and then the convex column bears a small part of the impact force, which can effectively protect the convex column structure, does not need to be replaced frequently, effectively prolongs the service life, and greatly reduces the production cost.

[0006] The technical solution adopted by the utility model to solve the technical problems is:

[0007] The utility model discloses a forging and pressing forming die for lock nut, which comprises an upper die body and a lower die body. The upper die body and the lower die body are matched to form a closed cavity for forming a blank. A groove is formed in the bottom end of the upper die body and matches the upper end surface of the blank. A convex column is connected in the groove, and the lower surface of the convex column is higher than or flush with the lower surface of the upper die body.

[0008] Preferably, the upper die body is provided with a pushing groove, and a plurality of pushing rods for demolding are slidingly connected in the pushing groove. The plurality of pushing rods are annularly wrapped outside the groove.

[0009] Preferably, the lower end of the pushing rod can slide out of the upper die body downward to realize demolding.

[0010] Preferably, the spacer is arranged in parallel between the plurality of push rods, and the upper ends of the plurality of push rods are detachably connected to the spacer.

[0011] Preferably, the push rod is slidably connected to the fixed plate.

[0012] Preferably, the push rod is sleeved with a reset spring, the upper end of the reset spring is connected to the push rod, the lower end of the reset spring is connected to the fixed plate, and the elastic force of the reset spring makes the lower surface of the push rod higher than or flush with the lower surface of the upper die body.

[0013] Preferably, the lower die body is provided with a guide groove and a forming cavity, the forming cavity and the guide groove are communicated, and the forming cavity and the groove cooperate to form a cavity for forming a blank.

[0014] Preferably, a bushing is slidably arranged in the forming cavity, and a lower core is slidably arranged in the bushing and provided with a threaded hole.

[0015] Preferably, the lower surface of the lower die body is provided with a push spring, and the lower end of the push spring is fixed to the punch.

[0016] Preferably, the elastic force of the push spring makes the upper surface of the lower core lower than or flush with the upper surface of the guide groove.

[0017] Compared with the prior art, the utility model has the advantages that:

[0018] 1. The utility model discloses a convex column for forming a waist-shaped groove is arranged, and the convex column is located in the groove, so that when stamping, other parts of the upper die body first bear most of the impact force, and then the convex column bears a small part of the impact force, which can effectively protect the structure of the convex column, and when the temperature of the mold rises, the part of the convex column does not rise rapidly, but lags behind the temperature rising speed of the whole mold, so that the convex column does not need to be frequently replaced, the service life is effectively prolonged, and the production cost is greatly reduced.

[0019] 2. The utility model discloses a push rod, after stamping is completed, the push spring drives the lower die body to ascend, the lower die body can drive the blank to ascend simultaneously, so that the blank is separated from the lower core, and meanwhile the spacer descends and drives the push rod to descend, the push rod pushes the blank away from the upper die body, so that after stamping is completed, the blank can be conveniently and completely demolded, the blank is conveniently gripped subsequently, and the production efficiency is effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] The above and / or additional aspects and advantages of the utility model will become apparent and more readily appreciated from the following description of the embodiments, with reference to the following drawings, in which:

[0021] Figure 1 is the overall exploded schematic view of the utility model;

[0022] Figure 2 is the blank structure schematic view;

[0023] Figure 3 is the overall perspective view of the utility model;

[0024] Figure 4 is the lower die body part perspective Figure 1 ;

[0025] Figure 5 is the lower die body part perspective Figure 2 ;

[0026] Figure 6 is the lower die body part perspective Figure 3 ;

[0027] Figure 7 is the lower die body part perspective Figure 4 ;

[0028] Figure 8 is the cushion block part structure schematic view;

[0029] Figure 9 is the upper die body bottom view;

[0030] Figure 10 is the backing part result schematic Figure 1 ;

[0031] Figure 11 is the backing part result schematic Figure 2 .

[0032] Explanation of the reference signs:

[0033] 1 upper die body;2 lower die body;3 blank;31 waist type groove;4 bush;5 lower core-pulling;51 screw hole;6 push spring;7 push rod;8 reset spring;9 cushion block;10 push material groove;11 guide groove;12 groove;13 convex column;14 fixed plate;15 forming cavity. DETAILED DESCRIPTION

[0034] The embodiments of the utility model are described in detail below, the examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the utility model, and cannot be understood as the limitation of the utility model.

[0035] As Figures 1-11As shown, the embodiment proposes a forging forming die for lock nut, which comprises an upper die body 1 and a lower die body 2. The upper die body 1 and the lower die body 2 are closed to form a closed cavity for forming a blank 3, so as to realize the stamping forming work of the blank 3 of the product.

[0036] The upper end of the upper die body 1 is provided with a groove 12 which is in close contact with the upper end surface of the blank 3. The groove 12 is connected with a convex column 13. Each surface of the convex column 13 is provided with a 1-degree demolding slope. The convex column 13 is located in the groove 12. The convex column 13 and the upper die body 1 can be connected in a detachable manner, so as to facilitate the replacement of the convex column 13. The convex column 13 can stamp a waist-shaped groove 31 of the blank 3.

[0037] The lower surface of the convex column 13 is higher than or flush with the lower surface of the upper die body 1. During stamping, other parts of the upper die body 1 first bear most of the impact force, and then the convex column 13 bears a small part of the impact force, which can effectively protect the structure of the convex column 13. When the temperature of the die rises, this part of the convex column 13 will not rise rapidly, but will lag behind the temperature rising speed of the whole die, so that the convex column 13 does not need to be replaced frequently, effectively prolongs the service life, and greatly reduces the production cost.

[0038] The upper die body 1 is provided with a pushing groove 10. A plurality of pushing rods 7 for demolding are slidably connected in the pushing groove 10. The plurality of pushing rods 7 are annularly wrapped outside the groove 12. The pushing rods 7 can only slide in the vertical direction. The lower end of the pushing rod 7 can slide out of the upper die body 1 to realize demolding.

[0039] The pushing groove 10 is also provided with a pad 9. The plurality of pushing rods 7 are arranged in parallel. The upper ends of the plurality of pushing rods 7 are detachably connected with the pad 9. The detachable connection can be achieved in a threaded manner. When the pad 9 moves, it can drive the plurality of pushing rods 7 to move simultaneously. The pushing rods 7 slide out of the upper die body 1, which can drive the blank 3 to move and realize demolding.

[0040] The pushing groove 10 is fixedly connected with a fixed plate 14. The pushing rod 7 and the fixed plate 14 are slidably connected. The fixed plate 14 is used for guiding and limiting the movement of the pushing rod 7. The upper surface of the fixed plate 14 is arranged in parallel with the upper surface of the upper die body 1, which provides support for the subsequent setting of the return spring 8, so that the pushing rod 7 can only slide in the vertical direction.

[0041] The pushing rod 7 is sleeved with a return spring 8. The upper end of the return spring 8 is connected with the pushing rod 7. The lower end of the return spring 8 is connected with the fixed plate 14. The elastic force of the return spring 8 makes the lower surface of the pushing rod 7 higher than or flush with the lower surface of the upper die body 1, so as to not affect the normal stamping work.

[0042] The lower mold body 2 is provided with a guide groove 11 and a forming cavity 15. The guide groove 11 can be used for the lower end of the upper mold body 1 to slide into, so as to realize the cooperation of the upper mold body 1 and the lower mold body 2. The forming cavity 15 is communicated with the guide groove 11, and the forming cavity 15 and the groove 12 are cooperated to form a cavity for forming the blank 3.

[0043] A bushing 4 is slidably arranged in the forming cavity 15, and a lower core-pulling 5 is slidably arranged in the bushing 4. The lower core-pulling 5 is provided with a threaded hole 51. The bushing 4 is sleeved on the lower core-pulling 5. The threaded hole 51 is used to realize the connection between the lower core-pulling 5 and the screw rod of the punch. Thus, the lower core-pulling 5 can be fixed on the punch. The threaded hole 51 is used to protect the lower core-pulling 5.

[0044] The bushing 4 can be connected with the driving mechanism of the lower half of the punch. The bushing 4 can reduce the abrasion, reduce the direct contact between the lower core-pulling 5 and the lower mold body 2, reduce the friction and abrasion, and prolong the service life of the machine. The bushing 4 can provide support for the lower core-pulling 5 to ensure its stable operation. Meanwhile, the driving mechanism can drive the bushing 4 to rise, so that the blank 3 can be separated from the lower core-pulling 5 to realize demolding.

[0045] The upper mold body 1 is connected with the punch. The punch can drive the upper mold body 1 to descend to realize stamping. The lower mold body 2 is connected with the punch through the push spring 6. The lower mold body 2 is slidably connected with the punch, and can slide in the vertical direction. The lower mold body 2 is located directly below the upper mold body 1. The lower surface of the lower mold body 2 is provided with the push spring 6. The lower end of the push spring 6 is fixed on the punch.

[0046] The elastic force of the push spring 6 makes the upper surface of the lower core-pulling 5 lower than or flush with the upper surface of the guide groove 11. After stamping, the push spring 6 drives the lower mold body 2 to rise. The lower mold body 2 drives the blank 3 to rise at the same time, so that the blank 3 is separated from the lower core-pulling 5. At the same time, the cushion block 9 descends to drive the push rod 7 to descend. The push rod 7 pushes the blank 3 away from the upper mold body 1. After stamping, the blank 3 can be completely demolded more conveniently. The blank 3 is convenient for clamping, and the production efficiency is effectively improved.

[0047] The specific working process is as follows: when the blank 3 is stamped, the upper mold body 1 is driven by the punch to rise. The worker puts the red copper bar into the guide groove 11. Then the punch is started. The upper half of the punch drives the upper mold body 1 to move downward rapidly, and the upper mold body 1 is combined with the lower mold body 2 to form the blank 3. When the upper mold body 1 descends and combines with the lower mold body 2, the upper mold body 1 and the lower mold body 2 will move downward at the same time. At this time, the push spring 6 is compressed. This is used to make the combination of the upper mold body 1, the lower mold body 2, the lower core-pulling 5 and the bushing 4 form a completely closed cavity for forming the blank 3.

[0048] When the blank 3 is formed, the upper die body 1 is driven by the punch to move upward, the upper die body 1 is separated from the lower die body 2, the lower die body 2 is driven by the push spring 6 to move upward, and when the lower die body 2 moves upward, the bushing 4 is driven by the driving mechanism of the lower half of the punch to move upward together with the blank 3, so that the blank 3 is separated from the lower core-pulling 5, at this time, the blank 3 is driven by the lower die body 2 to move upward, the cushion block 9 is driven by the punch to start moving downward, the cushion block 9 drives the plurality of push rods 7 to move downward at the same time, the blank 3 is pushed away from the groove 12, and thus the blank 3 is successfully demolded, and the blank 3 can be taken out by the worker.

[0049] Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and their equivalents.

Claims

1. A swage forming die for a lock nut comprising an upper die body (1) and a lower die body (2), characterised in that, The upper die body (1) and the lower die body (2) can be closed to form a closed cavity for forming the blank (3), the bottom end of the upper die body (1) is provided with a groove (12) matched with the upper end surface of the blank (3), and the groove (12) is connected with a convex column (13), and the lower surface of the convex column (13) is higher than or flush with the lower surface of the upper die body (1).

2. The swage forming die for a lock nut according to claim 1, wherein The upper die body (1) is provided with a pushing groove (10), and a plurality of pushing rods (7) for demolding are slidably connected in the pushing groove (10), and the plurality of pushing rods (7) are annularly wrapped outside the groove (12).

3. The swage forming die for a lock nut according to claim 2, wherein The lower end of the pushing rod (7) can slide out of the upper die body (1) to realize demolding.

4. The swage forming die for a lock nut according to claim 2, wherein The pushing rod (7) is provided with a plurality of pushing rods (7) arranged in parallel between the pushing rod (7), and the upper end of the pushing rod (7) is detachably connected with the cushion block (9).

5. The swage forming die for a lock nut according to claim 4, wherein The pushing groove (10) is fixedly connected with a fixed plate (14), and the pushing rod (7) and the fixed plate (14) are slidably connected.

6. The swage forming die for a lock nut according to claim 5, wherein The pushing rod (7) is provided with a reset spring (8), and the upper end of the reset spring (8) is connected with the pushing rod (7), and the lower end of the reset spring (8) is connected with the fixed plate (14), and the elastic force of the reset spring (8) makes the lower surface of the pushing rod (7) higher than or flush with the lower surface of the upper die body (1).

7. The swage forming die for a lock nut according to claim 1, wherein The lower die body (2) is provided with a guide groove (11) and a forming cavity (15), the forming cavity (15) and the guide groove (11) are communicated, and the forming cavity (15) and the groove (12) cooperate to form a cavity for forming the blank (3).

8. The swage forming die for a lock nut according to claim 7, wherein The forming cavity (15) is slidably provided with a bushing (4), and the bushing (4) is slidably provided with a lower core (5), and the lower core (5) is provided with a threaded hole (51).

9. The swage forming die for a lock nut according to claim 8, wherein The lower surface of the lower die body (2) is provided with a pushing spring (6), and the lower end of the pushing spring (6) is fixed on the punch.

10. The swage forming die for a lock nut according to claim 9, wherein The elastic force of the pushing spring (6) makes the upper surface of the lower core (5) lower than or flush with the upper surface of the guide groove (11).

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