Rear lower panel mould

Abstract

This utility model relates to the technical field of stamping trimming dies, and discloses a rear lower panel die, including an upper die and a lower die. The upper die has a forming surface for forming the rear lower panel, and the lower die has a die core surface corresponding to the forming surface. A trimming ring is arranged around the periphery of the forming surface. The top of the trimming ring is fixed to the upper die, and the bottom of the trimming ring has a cutting edge for trimming the rear lower panel blank. A coarse grinding strip is fixed to the cutting edge of the cutting edge. After the cutting edge is completed, when the cutting edge returns to its original position with the upper die, the coarse grinding strip on the cutting edge grinds the side line of the rear lower panel blank, thereby removing larger burrs. This eliminates the need to spend a lot of time removing large burrs from the periphery of the rear lower panel blank later, improving the overall processing progress of the rear lower panel.

Description

Technical Field

[0001] The utility model relates to the technical field of stamping and trimming dies, in particular to a rear enclosure lower plate die. 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 covering parts. The rear lower panel of the car is one of the important covering parts of the car, and there is a significant curvature change in the surface of the overlap area between the rear lower panel of the car and the car.

[0003] Therefore, when processing the rear lower panel of the automobile, it is necessary to use a stamping and trimming die to simultaneously press the plate surface of the rear lower panel blank and trim the surrounding sides of the rear lower panel blank. However, after trimming the surrounding sides of the rear lower panel blank, large burrs are likely to be left on the surrounding sides of the rear lower panel blank. It will take a lot of time to remove the large burrs on the surrounding sides of the rear lower panel blank later, which will affect the progress of the entire processing of the rear lower panel. Utility Model Content

[0004] The utility model aims to provide a rear enclosure lower plate mold, which can simultaneously grind larger burrs when trimming the peripheral side of a rear enclosure lower plate blank.

[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 rear lower panel mold, comprising an upper mold and a lower mold, wherein the upper mold has a molding surface for molding the rear lower panel, and the lower mold has a mold core surface corresponding to the molding surface, and a trimming ring is arranged around the circumference of the molding surface, the top of the trimming ring is fixed on the upper mold, and the bottom of the trimming ring has a blade for trimming the rear lower panel blank, and a coarse grinding strip is fixed on the blade surface of the blade.

[0007] The utility model places the rear enclosure lower plate blank on the die core molding surface of the lower die, and punches and extrude the rear enclosure lower plate blank through the molding surface of the upper die so that the plate surface of the rear enclosure lower plate blank forms a curved surface, and at the same time, the trimming ring on the peripheral side of the molding surface punches and trims the rear enclosure lower plate blank so that the peripheral side of the rear enclosure lower plate blank forms a side edge line; in the trimming process, when the rear enclosure lower plate blank is subjected to the trimming force of the blade, the rear enclosure lower plate blank is subjected to the force to generate stress concentration, thereby cracking and forming larger burrs, and after the blade completes the trimming, when the blade is reset with the upper die, the coarse grinding strip on the blade surface of the blade grinds the side edge line of the rear enclosure lower plate blank, thereby removing the larger burrs, so that there is no need to spend a lot of time to remove the larger burrs on the peripheral side of the rear enclosure lower plate blank in the later stage, thereby improving the progress of the entire processing of the rear enclosure lower plate.

[0008] 2) The rear lower panel mold according to 1), wherein:

[0009] The coarse grinding bar is arranged near the cutting edge of the blade.

[0010] Since the coarse grinding strip is set near the cutting edge of the blade, when the blade moves upward, the side edge line of the rear lower plate blank can be ground to remove larger burrs. In this way, there is no need to spend a lot of time to remove the larger burrs on the side of the rear lower plate blank later, thereby improving the progress of the entire processing of the rear lower plate.

[0011] 3) The rear lower panel mold according to 1), wherein:

[0012] The lower mold is provided with a guide groove, the cross section of which is annular and is arranged around the circumference of the mold core surface. The position of the guide groove corresponds to the position of the trimming ring and enables the trimming ring to reciprocate along the axial direction of the guide groove.

[0013] The trimming ring of the utility model extends into the guide groove during trimming, so that the guide groove can give way to the trimming ring.

[0014] 4) The rear lower panel mold according to 2), wherein:

[0015] The coarse grinding strip is in a strip-shaped structure, and the coarse grinding strip is adhered along the side edge line of the cutting edge of the blade.

[0016] 5) The rear lower panel mold according to 1), wherein:

[0017] Two T-shaped columns are arranged between the upper die and the lower die, and the two T-shaped columns are respectively fixed on both sides of the upper surface of the lower die. T-shaped slots for inserting the T-shaped columns are respectively opened on both sides of the lower surface of the upper die, and the T-shaped columns can reciprocate along the axial direction of the T-shaped slots.

[0018] The upper die and the lower die of the utility model realize the pressing operation of the upper die and the lower die through the engagement and separation of the T-shaped column and the T-shaped groove.

[0019] Compared with the prior art, the utility model also has the following technical effects:

[0020] The trimming ring in the utility model is arranged on the peripheral side of the upper die forming profile, and when the upper die is punching toward the rear lower plate blank, the upper die forming profile and the trimming ring are used to synchronously punch and form the rear lower plate blank and perform side trimming, thereby reducing the processing steps and improving the progress of the entire processing of the rear lower plate. At the same time, the design of the trimming ring and the rough grinding strip is combined to perform preliminary grinding on the side of the rear lower plate blank after trimming, eliminating the large burrs on the side of the rear lower plate blank, thereby also improving the progress of the entire processing of the rear lower plate and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1It is a structural schematic diagram of the rear enclosure lower plate mold of the utility model.

[0022] Figure 2 It is a side view of the rear lower panel mold of the utility model. DETAILED DESCRIPTION

[0023] The following is further described in detail through specific implementation methods:

[0024] The reference numerals in the drawings of the specification include: upper die 1, lower die 2, trimming ring 3, guide groove 4, die core profile 5, rough grinding strip 6, T-shaped column 7, T-shaped slot 8.

[0025] 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.

[0026] In e.g. Figure 1 In the generally shown embodiment, the rear lower plate mold of the utility model includes an upper mold 1 and a lower mold 2, the upper mold 1 has a molding surface for molding the rear lower plate, the lower mold 2 has a mold core surface 5 corresponding to the molding surface, a trimming ring 3 is arranged around the circumference of the molding surface, the top of the trimming ring 3 is fixed on the upper mold 1, and the bottom of the trimming ring 3 has a blade for trimming the rear lower plate blank, and a coarse grinding strip 6 is fixed on the blade surface.

[0027] The utility model places the rear lower plate blank on the mold core molding surface 5 of the lower mold 2, and punches and extrude the rear lower plate blank through the molding surface of the upper mold 1 so that the plate surface of the rear lower plate blank forms a curved surface. At the same time, the trimming ring 3 on the peripheral side of the molding surface punches and trims the rear lower plate blank so that the peripheral side of the rear lower plate blank forms a side edge line. In the trimming process, when the rear lower plate blank is subjected to the trimming force of the blade, the rear lower plate blank is subjected to stress concentration, thereby cracking and forming larger burrs. After the blade completes the trimming, when the blade is reset with the upper mold 1, the coarse grinding strip 6 on the blade surface of the blade grinds the side edge line of the rear lower plate blank, thereby removing the larger burrs. In this way, it is not necessary to spend a lot of time to remove the larger burrs on the peripheral side of the rear lower plate blank in the later stage, thereby improving the progress of the entire processing of the rear lower plate.

[0028] The rough grinding strip 6 is arranged near the edge of the blade. The rough grinding strip 6 is in a strip-shaped structure, and the rough grinding strip 6 is adhered along the side edge line of the edge of the blade. Since the rough grinding strip 6 is arranged near the edge of the blade, when the blade moves upward, the side edge line of the rear lower plate blank can be ground, thereby removing larger burrs, so that it is not necessary to spend a lot of time to remove the larger burrs around the rear lower plate blank in the later stage, thereby improving the progress of the entire processing of the rear lower plate.

[0029] A guide groove 4 is provided on the lower mold 2 . The cross section of the guide groove 4 is annular and is arranged around the periphery of the mold core surface 5 . The position of the guide groove 4 corresponds to the position of the trimming ring and enables the trimming ring to reciprocate along the axial direction of the guide groove 4 .

[0030] The trimming ring of the utility model extends into the guide groove 4 during trimming, so that the guide groove 4 can make way for the trimming ring.

[0031] In e.g. Figure 2 In the embodiment shown generally, two T-shaped columns 7 are provided between the upper die 1 and the lower die 2 in the utility model, and the two T-shaped columns 7 are respectively fixed on both sides of the upper surface of the lower die 2, and T-shaped slots 8 for inserting the T-shaped columns 7 are respectively provided on both sides of the lower surface of the upper die 1, and the T-shaped columns 7 can reciprocate along the axial direction of the T-shaped slots 8. The upper die 1 and the lower die 2 of the utility model realize the pressing operation of the upper die 1 and the lower die 2 through the engagement and separation of the T-shaped columns 7 and the T-shaped slots 8.

[0032] The trimming ring 3 in the utility model is arranged on the peripheral side of the forming profile of the upper die 1. When the upper die 1 is punching toward the rear lower plate blank, the rear lower plate blank is punched and formed and the side trimming is performed synchronously through the forming profile of the upper die 1 and the trimming ring 3, thereby reducing the processing steps and improving the progress of the entire processing of the rear lower plate. At the same time, the side of the rear lower plate blank after trimming is preliminarily polished in combination with the design of the trimming ring 3 and the rough grinding strip 6 to eliminate the large burrs on the side of the rear lower plate blank, thereby improving the progress of the entire processing of the rear lower plate and improving production efficiency.

[0033] 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 lower panel mold is characterized by: It includes an upper mold and a lower mold, the upper mold has a molding surface for molding the rear lower plate, the lower mold has a mold core surface corresponding to the molding surface, a trimming ring is arranged around the circumference of the molding surface, the top of the trimming ring is fixed on the upper mold, the bottom of the trimming ring has a blade for trimming the rear lower plate blank, and a coarse grinding strip is fixed on the blade surface of the blade.

2. The rear lower panel mold according to claim 1, characterized in that: The coarse grinding bar is arranged near the cutting edge of the blade.

3. The rear lower panel mold according to claim 1, characterized in that: The lower mold is provided with a guide groove, the cross section of which is annular and is arranged around the circumference of the mold core surface. The position of the guide groove corresponds to the position of the trimming ring and enables the trimming ring to reciprocate along the axial direction of the guide groove.

4. The rear lower panel mold according to claim 2, characterized in that: The coarse grinding strip is in a strip-shaped structure, and the coarse grinding strip is adhered along the side edge line of the cutting edge of the blade.

5. The rear lower panel mold according to claim 1, characterized in that: Two T-shaped columns are arranged between the upper die and the lower die, and the two T-shaped columns are respectively fixed on both sides of the upper surface of the lower die. T-shaped slots for inserting the T-shaped columns are respectively opened on both sides of the lower surface of the upper die, and the T-shaped columns can reciprocate along the axial direction of the T-shaped slots.

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