Drawing die for rear wall window component
By using a combination design of elastic retaining ring and guide rod return spring in the drawing die for automotive rear window components, the problem of positional displacement of the rear window component blank during the pressing process was solved, achieving sufficient pressing deformation and uniformity of drawing.
Patent Information
- Application Number
- CN202421114037.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-21
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-05-21
AI Technical Summary
In the existing automotive rear window component drawing die, the rear window component blank is prone to positional displacement during the pressing process, resulting in uneven pressing and insufficient deformation.
An elastic retaining ring is used to wrap around the periphery of the mold core of the lower mold. Combined with the design of guide rods and return springs, the elastic potential energy of the retaining ring and return springs buffers the impact force of the upper mold, prevents the blank from shifting, and ensures the uniformity of the pressing and drawing process.
It effectively prevents the rear window component blank from shifting position during the pressing process, ensures sufficient pressing deformation and uniform drawing forming, and reduces the shifting problem caused by excessive impact force from the upper mold forming surface on the blank.
Smart Images
Figure CN222307027U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of drawing dies for automobile covering parts, in particular to a drawing die for a rear window component. Background Art
[0002] At present, people's pursuit of car body shape is mainly rounded and streamlined, and the change of car body shape has also increased the difficulty of manufacturing car covers. The rear window of the car is one of the important covers of the car. There is an obvious curvature change in the surface at the overlap area between the rear window of the car and the car, and the surface has a trend from convex to concave and then to convex.
[0003] Therefore, when processing the rear window of an automobile, a drawing die is required to press the rear window component blank. During processing, the rear window component blank is first placed on the lower die, and then the die is closed. However, in the process of pressing the upper die and the lower die of the drawing die in the prior art, the position of the rear window component blank is easily offset, so that the rear window component blank is easily deformed insufficiently in the profile area of the overlap area of the pressed rear window component and the rear cover of the automobile, and the drawing forming is uneven. Utility Model Content
[0004] The utility model aims to provide a rear window component drawing die, which can limit the position of the rear window component blank during pressing.
[0005] To achieve the above objectives, various aspects of the present application can be implemented in one or more of the following embodiments:
[0006] 1) A drawing die for a rear window component, comprising an upper die and a lower die, wherein the upper die has a forming surface for forming the rear window component, the lower die has a die core surface corresponding to the forming surface, and a retaining ring is provided on the surface of the lower die facing the upper die, the retaining ring is arranged around the circumference of the die core surface, and is used to clamp the blank of the rear window component in the die core surface.
[0007] The blank of the rear window component is placed in the mold core surface, and the portion of the blank that is higher than the mold core surface is limited by a retaining ring arranged around the mold core surface, so that the blank of the rear window component is clamped at the position of the mold core surface, thereby achieving position limiting of the blank of the rear window component during pressing, so that the position of the blank of the rear window component will not be shifted, thereby achieving a rear window component that is fully deformed by pressing and uniformly formed by drawing.
[0008] 2) The rear window member drawing die according to 1), wherein:
[0009] The retaining ring has a certain elasticity.
[0010] During pressing, the forming surface of the upper die and the core surface of the lower die are used to draw the blank of the rear window component. During the drawing process, the forming surface of the upper die generates an extrusion impact on the rear window component blank in the core surface of the lower die. When the extrusion impact is too large and it is easy to deviate the drawn rear window component during resetting, therefore, in this scheme, a retaining ring is provided around the core surface of the lower die, and the rear window component blank is extruded on the forming surface of the upper die, and at the same time, the elastic retaining ring is deformed, at this time, the retaining ring generates resistance to the extrusion impact of the forming surface of the upper die, thereby being able to cushion the impact force of the forming surface of the upper die on the rear window component blank, thereby greatly reducing the deviation of the drawn rear window component during resetting caused by the excessive extrusion impact of the forming surface of the upper die.
[0011] 3) The rear window member drawing die according to 1), wherein:
[0012] Four guide rods are arranged around the circumference between the upper mold and the lower mold, and the top of the guide rod is fixed on the circumference of the forming surface of the upper mold. Four movable grooves for inserting the guide rods are opened on the circumference of the mold core surface of the lower mold. The movable grooves correspond to the guide rods one by one, and the guide rods can move back and forth along the axial direction of the movable grooves.
[0013] 4) The rear window member drawing die according to 3), wherein:
[0014] A return spring is arranged in the movable groove, one end of the return spring is fixed to the bottom of the movable groove, and the other end is a free end, and the end can abut against the bottom of the guide rod.
[0015] During the drawing process, the forming surface of the upper die generates an extrusion impact on the rear window component blank in the core surface of the lower die, and the guide rod on the upper die will move rapidly toward the lower die along the movable groove. At this time, the bottom of the guide rod is resisted by the reset spring, which slows down the axial movement of the guide rod toward the movable groove. In this way, the impact force of the forming surface of the upper die on the rear window component blank can be buffered, thereby greatly reducing the extrusion impact of the forming surface of the upper die, which may cause the drawn rear window component to be deviated during reset.
[0016] Compared with the prior art, the utility model also has the following technical effects:
[0017] The utility model limits the position of the rear window blank by means of the retaining ring, and combines its own elastic potential energy and the elastic potential energy of the reset spring designed in the movable groove of the lower die to buffer the impact force of the forming surface of the upper die on the rear window component blank, thereby greatly reducing the excessive extrusion impact of the forming surface of the upper die, which causes the stretched rear window component to be deflected during reset. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1It is a structural schematic diagram of the drawing die of the rear window component of the utility model. DETAILED DESCRIPTION
[0019] The following is further described in detail through specific implementation methods:
[0020] The reference numerals in the drawings of the specification include: upper die 1, lower die 2, guide rod 3, retaining ring 4, movable groove 5, and return spring 6.
[0021] Reference will now be made in detail to embodiments disclosed herein, examples of which are described herein and illustrated in the accompanying drawings. Although the present disclosure will be described in conjunction with embodiments and / or examples, they do not limit the present disclosure to these embodiments and / or examples. On the contrary, the present disclosure covers alternatives, modifications and equivalents.
[0022] In e.g. Figure 1 In the generally shown embodiment, the drawing die of the rear window component in the utility model includes an upper die 1 and a lower die 2, the upper die 1 has a molding surface for molding the rear window component, the lower die 2 has a mold core surface corresponding to the molding surface, and the surface of the lower die 2 facing the upper die 1 is provided with a rib ring 4, the rib ring 4 is arranged around the circumference of the mold core surface, and is used to clamp the blank of the rear window component in the mold core surface.
[0023] The blank of the rear window component is placed in the mold core surface, and the portion of the blank that is higher than the mold core surface is limited by the retaining ring 4 arranged around the circumference of the mold core surface, so that the blank of the rear window component is clamped at the position of the mold core surface, thereby achieving position limiting of the blank of the rear window component during pressing, so that the position of the blank of the rear window component will not be shifted, thereby achieving a rear window component that is fully deformed by pressing and uniformly formed by drawing.
[0024] Among them: the retaining ring 4 has a certain elasticity. During the pressing, the forming surface of the upper mold 1 and the mold core surface of the lower mold 2 are used to draw the blank of the rear window component. During the drawing process, the forming surface of the upper mold 1 produces an extrusion impact on the rear window component blank in the mold core surface of the lower mold 2. When the extrusion impact is too large and reset, it is easy to deviate the drawn rear window component. Therefore, in this scheme, a retaining ring 4 is arranged around the mold core surface of the lower mold 2, and the rear window component blank is extruded on the forming surface of the upper mold 1, and the elastic retaining ring 4 is deformed at the same time. At this time, the retaining ring 4 produces resistance to the extrusion impact of the forming surface of the upper mold 1, and then can buffer the impact force of the forming surface of the upper mold 1 on the rear window component blank, which greatly reduces the excessive extrusion impact of the forming surface of the upper mold 1, which causes the drawn rear window component to be deviated during reset.
[0025] Secondly, four guide rods 3 are arranged around the circumference between the upper mold 1 and the lower mold 2. The top of the guide rod 3 is fixed on the circumference of the molding surface of the upper mold 1. Four movable grooves 5 for inserting the guide rods 3 are opened on the circumference of the mold core surface of the lower mold 2. The movable grooves 5 correspond one-to-one to the guide rods 3, and the guide rods 3 can move back and forth along the axial direction of the movable grooves 5.
[0026] A return spring 6 is provided in the movable groove 5, one end of the return spring 6 is fixed at the bottom of the movable groove 5, and the other end is a free end, and the end can abut against the bottom of the guide rod 3. During the drawing process, the forming surface of the upper die 1 produces an extrusion impact on the rear window component blank in the mold core surface of the lower die 2, and the guide rod 3 on the upper die 1 will move rapidly toward the lower die 2 along the movable groove 5. At this time, the bottom of the guide rod 3 is resisted by the return spring 6, which slows down the axial movement of the guide rod 3 toward the movable groove 5, so that the impact force of the forming surface of the upper die 1 on the rear window component blank can be buffered, which greatly reduces the excessive extrusion impact of the forming surface of the upper die 1, which causes the stretched rear window component to be deflected during the reset.
[0027] The utility model limits the position of the rear window blank by means of the retaining ring 4, and combines its own elastic potential energy and the elastic potential energy of the reset spring 6 designed in the movable groove 5 of the lower mold 2 to buffer the impact force of the forming surface of the upper mold 1 on the rear window component blank, thereby greatly reducing the excessive extrusion impact of the forming surface of the upper mold 1, which causes the stretched rear window component to be deflected during reset.
[0028] The above are only embodiments of the present invention, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution are not described in detail here. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the technical solution of the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.
Claims
1. The rear window component drawing die is characterized by: It comprises an upper die and a lower die, wherein the upper die has a molding surface for molding a rear window component, the lower die has a core mold surface corresponding to the molding surface, and a retaining ring is arranged on the surface of the lower die facing the upper die, the retaining ring is arranged around the circumference of the core mold surface, and is used to clamp the blank of the rear window component in the core mold surface.
2. The rear window component drawing die according to claim 1, characterized in that: The retaining ring has a certain elasticity.
3. The rear window component drawing die according to claim 1, characterized in that: Four guide rods are arranged around the circumference between the upper mold and the lower mold, and the top of the guide rod is fixed on the circumference of the forming surface of the upper mold. Four movable grooves for inserting the guide rods are opened on the circumference of the mold core surface of the lower mold. The movable grooves correspond to the guide rods one by one, and the guide rods can move back and forth along the axial direction of the movable grooves.
4. The rear window component drawing die according to claim 3, characterized in that: A return spring is arranged in the movable groove, one end of the return spring is fixed to the bottom of the movable groove, and the other end is a free end, and the end can abut against the bottom of the guide rod.