Three-column groove shell reverse swaging chamfering die

Abstract

The utility model provides a three-column groove shell reverse swaging chamfering die, including upper die subassembly and lower die subassembly, the upper die subassembly includes upper template, upper die backing plate, upper die sleeve, punch, unloading plate, spray ring, knockout rod, pull rod and unloading claw, unloading claw includes annular frame and is provided three claw petals inside annular frame, the lower die backing plate is provided with the upper die sleeve, the lower die sleeve is provided with the lower die sleeve, the upper die sleeve is provided with the lower die sleeve, and the lower die sleeve is provided with the lower die sleeve. The annular frame of the discharging claw is fixed to the bottom of the discharging plate, and three claw petals of the discharging claw extend downwards. The die has the advantages of being simple in structure, ingenious in design, capable of preventing a workpiece from being adhered to the punch, improving the coaxiality of an inner cavity and an outer shell of a product and the like.

Description

Technical Field

[0001] The utility model relates to the field of dies, in particular to a three-column trough shell reverse extrusion and chamfering die. Background Art

[0002] The three-column tank shell is a critical component in small-displacement sedans. It's primarily used to compensate for the lengthening or shortening of the wheelbase when the vehicle traverses bumps, turns, or takes flight. Consequently, this product has high requirements and a high market demand. Typically, during forging and reverse extrusion, the cavity of the three-column tank shell is designed to be straight. The long end face is then chamfered. This method disrupts the forged metal flow lines within the three-column tank shell and consumes more material. Therefore, directly forging the chamfers has become an option to improve product performance and reduce material consumption. However, during forging, the part will wrap around and adhere to the punch, unable to detach, making the forging process impossible.

[0003] Therefore, it is necessary to provide a new technical solution. Utility Model Content

[0004] In order to solve the technical problems existing in the prior art, the utility model discloses a three-column trough shell reverse extrusion chamfering die, and the specific technical solution is as follows:

[0005] The utility model provides a three-column trough shell reverse extrusion forging chamfering die, comprising an upper die assembly and a lower die assembly, wherein the upper die assembly comprises an upper die plate, an upper die pad, an upper die sleeve, a punch, a discharge plate, a spray ring, a punch rod, a pull rod and a discharge claw.

[0006] The upper mold plate is fixed to the bottom of the upper mold plate.

[0007] The upper die sleeve is fixed to the bottom of the upper die pad.

[0008] One end of the punch is fixed in the upper die sleeve, and the other end of the punch extends out of the upper die sleeve.

[0009] The stripper plate is arranged below the upper die sleeve, and a through hole is provided on the stripper plate. The spray ring is embedded in the through hole of the stripper plate. The spray ring is an annular structure, and the spray ring sleeve is arranged outside the punch.

[0010] One end of the punch rod passes upward through the upper die pad and is connected to the upper die plate and the driving mechanism, and the other end of the punch rod extends downward into the stripper plate and is fixedly connected to the stripper plate with threads, and the driving mechanism controls the movable lifting of the punch rod.

[0011] One end of the pull rod is fixed in the upper die pad, and the other end of the pull rod passes downward through the stripper plate, and the stripper plate can move back and forth on the pull rod.

[0012] The unloading claw includes an annular frame and three claw petals arranged on the inner side of the annular frame. The annular frame of the unloading claw is fixed to the bottom of the unloading plate, and the three claw petals of the unloading claw extend downward.

[0013] Furthermore, a circular countersunk hole is provided on the upper part of the through hole of the unloading plate, the spray ring is placed in the circular countersunk hole, and the spray ring is fixed to the unloading plate by screws. A special-shaped groove is provided on the lower part of the through hole of the unloading plate, and the unloading claw is placed in the special-shaped groove. A cover plate is also provided on the outer side of the unloading claw, and the outer side of the cover plate is fixedly connected to the unloading plate by screws. A step is provided on the inner side of the cover plate to press the unloading claw into the special-shaped groove.

[0014] Furthermore, the diameters of the two ends of the beating rod are different. The large end of the beating rod is connected to the driving mechanism upward, and the small end of the beating rod is threadedly connected to the discharge plate downward. The end face of the small end of the beating rod is provided with a threaded countersunk hole, and a fixing screw is provided in the threaded countersunk hole. The fixing screw extends upward from the bottom of the discharge plate into the discharge plate and is threadedly connected to the small end of the beating rod.

[0015] Furthermore, a pair of fixing nuts are provided at one end of the pull rod passing through the unloading plate, and the fixing nuts are fixed on the pull rod by being screwed forward and backward.

[0016] Furthermore, the lower mold assembly includes a lower mold plate, a lower mold sleeve, a concave mold, a guide sleeve, a spray plate, a ring sleeve and a lower mold pressing plate.

[0017] The lower die sleeve is fixed on the lower die plate.

[0018] The female mold is fixed in the mold cavity of the lower mold sleeve.

[0019] The guide sleeve is arranged on the top of the die, and the inner diameter of the guide sleeve is larger than the inner diameter of the die.

[0020] The spray plate is sleeved on the guide sleeve, and a step is provided at the bottom of the spray plate to be pressed on the guide sleeve.

[0021] The ring sleeve is arranged above the spray plate, and the ring sleeve is sleeved on the guide sleeve.

[0022] The lower mold plate is sleeved on the outer side of the spray plate, and the inner cavity of the lower mold plate is provided with a step to be clamped on the spray plate.

[0023] Furthermore, the top of the die is provided with one or more positioning keys or positioning grooves, and the bottom of the guide sleeve is correspondingly provided with one or more positioning grooves or positioning grooves. The die and the guide sleeve are connected and positioned by key grooves, and the inner diameter of the guide sleeve is larger than the inner diameter of the die.

[0024] Furthermore, the top end surfaces of the ring sleeve and the guide sleeve are flush.

[0025] Furthermore, the punch is fitted with a small clearance in the inner cavity of the guide sleeve, and the punch cannot rotate in the guide sleeve.

[0026] Furthermore, the inner cavity of the discharge claw is larger than the outer diameter of the punch guide portion, and the outer diameter of the discharge claw is smaller than the inner diameter of the guide sleeve.

[0027] Furthermore, when the upper mold assembly and the lower mold assembly are closed, the discharge claw extends into the guide sleeve but does not extend into the mold cavity of the female mold.

[0028] The utility model has the following beneficial effects:

[0029] 1. The three-column trough shell reverse extrusion and chamfering die provided by the utility model has a simple structure and ingenious design, and is easy to produce and manufacture and to promote on a large scale.

[0030] 2. The three-column trough shell reverse extrusion and chamfering die provided by the utility model adopts a discharge plate and discharge claw structure to separate the workpiece from the punch when the punch returns, solving the problem of the workpiece wrapping and sticking to the punch during production.

[0031] 3. The three-column slot shell reverse extrusion and chamfering die provided by the utility model has a guide sleeve and a die fixed by multiple keyways, which reduces the position difference between the inner cavity of the guide sleeve and the inner cavity of the die. At the same time, the guide sleeve and the die are set separately, which reduces the processing difficulty of the die.

[0032] 4. The three-column groove shell reverse extrusion and chamfering die provided by the utility model has a small clearance fit between the punch and the guide sleeve, which improves the coaxiality of the punch and the guide sleeve, thereby improving the coaxiality of the product inner cavity and the outer shell.

[0033] 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

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0035] Figure 1 It is a structural schematic diagram of a three-column trough shell reverse extrusion and chamfering die provided by an embodiment of the utility model.

[0036] Figure 2 It is a structural schematic diagram of the unloading structure and the guiding structure provided by an embodiment of the utility model.

[0037] Figure 3 It is a schematic diagram of the cross-sectional structure of the guide sleeve provided by an embodiment of the present utility model.

[0038] Wherein, the accompanying drawings are marked as follows:

[0039] Upper die plate 11, upper die backing plate 12, upper die sleeve 13, punch 14, discharge plate 15, spray ring 16, punch rod 17, pull rod 18, discharge claw 19, cover plate 191;

[0040] Lower mold plate 21 , lower mold sleeve 22 , die 23 , guide sleeve 24 , spray plate 25 , ring sleeve 26 and lower mold pressing plate 27 . DETAILED DESCRIPTION

[0041] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals 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 to explain the present invention, and should not be construed as limiting the present invention.

[0042] In the description of this utility model, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In the description of this utility model, "plurality" means two or more, unless otherwise expressly and specifically defined.

[0043] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0044] The utility model discloses a three-column trough shell reverse extrusion forging chamfering die, Figures 1 to 3 , including an upper die assembly and a lower die assembly, the upper die assembly includes an upper die plate 11, an upper die pad 12, an upper die sleeve 13, a punch 14, a discharge plate 15, a spray ring 16, a punching rod 17, a pull rod 18 and a discharge claw 19.

[0045] The upper die pad 12 is fixed to the bottom of the upper die plate 11 , the upper die sleeve 13 is fixed to the bottom of the upper die pad 12 , one end of the punch 14 is fixed in the upper die sleeve 13 , and the other end of the punch 14 extends out of the upper die sleeve 13 .

[0046] The stripper plate 15 is arranged below the upper die sleeve 13 . A through hole is provided on the stripper plate 15 . The spray ring 16 is embedded in the through hole of the stripper plate 15 . The spray ring 16 is an annular structure and is sleeved on the outside of the punch 14 .

[0047] One end of the punching rod 17 passes upward through the upper mold pad 12 and the upper mold plate 11 and is connected to the driving mechanism, and the other end of the punching rod 17 extends downward into the discharge plate 15 and is threadedly fixed to the discharge plate 15. The driving mechanism controls the movement and lifting of the punching rod 17.

[0048] One end of the pull rod is fixed in the upper die pad 12 , and the other end of the pull rod passes downward through the stripper plate 15 , and the stripper plate 15 can move back and forth on the pull rod.

[0049] The discharge claw 19 includes an annular frame and three claw petals arranged on the inner side of the annular frame. The annular frame of the discharge claw 19 is fixed to the bottom of the discharge plate 15, and the three claw petals of the discharge claw 19 extend downward.

[0050] In one embodiment, a circular countersunk hole is provided on the upper portion of the through hole of the discharge plate 15, and the spray ring 16 is placed in the circular countersunk hole. The spray ring 16 is fixed to the discharge plate 15 by screws. A special-shaped groove is provided on the lower portion of the through hole of the discharge plate 15, and the discharge claw 19 is placed in the special-shaped groove. A cover plate 191 is also provided on the outer side of the discharge claw 19. The outer side of the cover plate 191 is fixedly connected to the discharge plate 15 by screws, and a step is provided on the inner side of the cover plate 191 to press the discharge claw 19 into the special-shaped groove.

[0051] The two ends of the punching rod 17 have different diameters. The large end of the punching rod 17 is connected to the driving mechanism upward, and the small end of the punching rod 17 is threadedly connected to the discharge plate 15 downward. The end face of the small end of the punching rod 17 is provided with a threaded countersunk hole, and a fixing screw is provided in the threaded countersunk hole. The fixing screw extends upward from the bottom of the discharge plate 15 into the discharge plate 15 and is threadedly connected to the small end of the punching rod 17.

[0052] The pull rod passes through one end of the stripper plate 15 and is provided with a pair of fixing nuts, and the fixing nuts are fixed on the pull rod by being screwed forward and backward.

[0053] The lower die assembly includes a lower die plate 21 , a lower die sleeve 22 , a die 23 , a guide sleeve 24 , a spray plate 25 , a ring sleeve 26 and a lower die pressing plate 27 .

[0054] The lower die sleeve 22 is fixed on the lower die plate 21, the die 23 is fixed in the die cavity of the lower die sleeve 22, the guide sleeve 24 is arranged on the top of the die 23, the inner diameter of the guide sleeve 24 is larger than the inner diameter of the die 23, the spray plate 25 is sleeved on the guide sleeve 24, and the bottom of the spray plate 25 is provided with a step to be clamped on the guide sleeve 24.

[0055] The annular sleeve 26 is disposed above the spray plate 25 , and the annular sleeve 26 is sleeved on the guide sleeve 24 .

[0056] The lower mold plate 27 is sleeved on the outer side of the spray plate 25 , and the inner cavity of the lower mold plate 27 is provided with a step to be clamped on the spray plate 25 .

[0057] In one embodiment, the top of the die 23 is provided with one or more positioning keys or positioning grooves, and the bottom of the guide sleeve 24 is correspondingly provided with one or more positioning grooves or positioning grooves. The die 23 and the guide sleeve 24 are connected and positioned by key grooves, and the inner diameter of the guide sleeve 24 is larger than the inner diameter of the die 23.

[0058] The top end surfaces of the annular sleeve 26 and the guide sleeve 24 are flush.

[0059] The punch 14 is fitted with a small clearance in the inner cavity of the guide sleeve 24 , and the punch 14 cannot rotate in the guide sleeve 24 .

[0060] The inner cavity of the discharge claw 19 is larger than the outer diameter of the guide portion of the punch 14 , and the outer diameter of the discharge claw 19 is smaller than the inner diameter of the guide sleeve 24 .

[0061] When the upper mold assembly and the lower mold assembly are closed, the discharge claw 19 extends into the guide sleeve 24 but does not extend into the mold cavity of the female mold 23.

[0062] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification.

[0063] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations of the present invention. Ordinary technicians in this field can change, modify and modify the above embodiments within the scope of the present invention.

Claims

1. A three-column trough shell reverse extrusion chamfering die, comprising an upper die assembly and a lower die assembly, characterized in that: The upper die assembly includes an upper die plate, an upper die pad, an upper die sleeve, a punch, a discharge plate, a spray ring, a punch rod, a pull rod and a discharge claw. The upper mold plate is fixed to the bottom of the upper mold plate. The upper die sleeve is fixed to the bottom of the upper die pad. One end of the punch is fixed in the upper die sleeve, and the other end of the punch extends out of the upper die sleeve. The stripper plate is arranged below the upper die sleeve, and a through hole is provided on the stripper plate. The spray ring is embedded in the through hole of the stripper plate. The spray ring is an annular structure, and the spray ring sleeve is arranged outside the punch. One end of the punch rod passes upward through the upper die pad and is connected to the upper die plate and the driving mechanism, and the other end of the punch rod extends downward into the stripper plate and is fixedly connected to the stripper plate with threads, and the driving mechanism controls the movable lifting of the punch rod. One end of the pull rod is fixed in the upper die pad, and the other end of the pull rod passes downward through the stripper plate, and the stripper plate can move back and forth on the pull rod. The unloading claw includes an annular frame and three claw petals arranged on the inner side of the annular frame. The annular frame of the unloading claw is fixed to the bottom of the unloading plate, and the three claw petals of the unloading claw extend downward.

2. The three-column trough shell reverse extrusion and chamfering die according to claim 1 is characterized in that: A circular countersunk hole is provided on the upper part of the through hole of the discharge plate, and the spray ring is placed in the circular countersunk hole. The spray ring is fixed to the discharge plate by screws. A special-shaped groove is provided on the lower part of the through hole of the discharge plate, and the discharge claw is placed in the special-shaped groove. A cover plate is also provided on the outer side of the discharge claw, and the outer side of the cover plate is fixedly connected to the discharge plate by screws. A step is provided on the inner side of the cover plate to press the discharge claw into the special-shaped groove.

3. The three-column tank shell reverse extrusion and chamfering die according to claim 1, characterized in that: The diameters of the two ends of the beating rod are different. The large end of the beating rod is connected to the driving mechanism upward, and the small end of the beating rod is threadedly connected to the discharge plate downward. The end face of the small end of the beating rod is provided with a threaded countersunk hole, and a fixing screw is provided in the threaded countersunk hole. The fixing screw extends upward from the bottom of the discharge plate into the discharge plate and is threadedly connected to the small end of the beating rod.

4. The three-column trough shell reverse extrusion and chamfering die according to claim 1, characterized in that: The pull rod passes through one end of the unloading plate and is provided with a pair of fixing nuts, and the fixing nuts are fixed on the pull rod by being screwed forward and reversely.

5. The three-column trough shell reverse extrusion and chamfering die according to claim 1, characterized in that: The lower die assembly includes a lower die plate, a lower die sleeve, a concave die, a guide sleeve, a spray plate, a ring sleeve and a lower die pressing plate. The lower die sleeve is fixed on the lower die plate. The female mold is fixed in the mold cavity of the lower mold sleeve. The guide sleeve is arranged on the top of the die, and the inner diameter of the guide sleeve is larger than the inner diameter of the die. The spray plate is sleeved on the guide sleeve, and a step is provided at the bottom of the spray plate to be pressed on the guide sleeve. The ring sleeve is arranged above the spray plate, and the ring sleeve is sleeved on the guide sleeve. The lower mold plate is sleeved on the outer side of the spray plate, and the inner cavity of the lower mold plate is provided with a step to be clamped on the spray plate.

6. The three-column tank shell reverse extrusion and chamfering die according to claim 5, characterized in that: The top of the die is provided with one or more positioning keys or positioning grooves, and the bottom of the guide sleeve is correspondingly provided with one or more positioning grooves or positioning grooves. The die and the guide sleeve are connected and positioned by key grooves, and the inner diameter of the guide sleeve is larger than the inner diameter of the die.

7. The three-column tank shell reverse extrusion and chamfering die according to claim 5, characterized in that: The top end surfaces of the annular sleeve and the guide sleeve are flush.

8. The three-column trough shell reverse extrusion and chamfering die according to claim 5, characterized in that: The punch is matched with the inner cavity of the guide sleeve with a small gap, and the punch cannot rotate in the guide sleeve.

9. The three-column trough shell reverse extrusion and chamfering die according to claim 8, characterized in that: The inner cavity of the discharge claw is larger than the outer diameter of the punch guide portion, and the outer diameter of the discharge claw is smaller than the inner diameter of the guide sleeve.

10. The three-column tank shell reverse extrusion and chamfering die according to claim 9, characterized in that: When the upper mold assembly and the lower mold assembly are closed, the discharge claw extends into the guide sleeve but does not extend into the mold cavity of the female mold.

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