Top cover cutting, flanging and shaping composite die and use method thereof

Abstract

The present invention discloses a composite mold for cutting and flanging top cover and a method for using the same. The composite mold for cutting and flanging top cover comprises: an upper mold assembly, a pressing device assembly, and a lower mold assembly; wherein the upper mold assembly comprises: an upper mold base, a mold frame pad, an upper mold shaping insert, an upper mold flanging cutting insert, several springs, and several unloading screws, etc.; the pressing device assembly comprises a pressing device and several pressing device guide plates; the lower mold assembly comprises: a lower mold base, several limiters, a lower mold cutting and shaping insert, a lower mold cutting and flanging insert, a lower mold fixing block, and an ejector pin, etc. The present invention provides a set of simple and practical composite molds for cutting and flanging top cover, which do not use external equipment such as an inclined wedge and a cylinder, directly realize the functions of cutting, flanging, and shaping, reduce mold opening costs and production costs, save part placement costs, part transportation costs, and mold loading and unloading time, save mold costs, and ensure the stability of part size.

Description

Technical Field

[0001] The invention relates to the technical field of automobile stamping dies, and more particularly to a top cover cutting, flanging and shaping composite die and a use method thereof. Background Art

[0002] As consumers' aesthetic tastes improve day by day, the process of vehicle model modification and replacement is accelerating. In order to save development costs and shorten the parts development cycle, most automobile OEMs choose to modify the existing roof, which requires adjusting the length of the original roof and then splicing it into a new roof by gluing, welding, etc.

[0003] The modification of large exterior parts such as the top cover has put forward new requirements for mold design. The parts are very large but only part of them are modified. Therefore, how to design the mold to meet the quality requirements of the parts while saving mold costs and part production costs is an issue that mold designers must consider. Against this background, we are prompted to innovate. Summary of the invention

[0004] The present invention aims to solve one of the above-mentioned technical problems in the prior art at least to a certain extent.

[0005] To this end, on one hand, the purpose of the present invention is to provide a composite die for cutting and flanging a top cover, comprising: an upper die assembly, a pressing assembly, and a lower die assembly.

[0006] The upper die assembly comprises: an upper die seat, a die frame pad, an upper die shaping insert, an upper die flanging and cutting insert, a plurality of springs and a plurality of unloading screws; wherein the die frame pad is fixedly connected to the upper die seat and used to jam the pressing device assembly; the upper die shaping insert and the upper die flanging and cutting insert are fixedly connected in the cutting and flanging shaping working area on the upper die seat;

[0007] The press assembly includes a press and several press guide plates, the press is hung on the upper die seat through several unloading screws; several press guide plates are arranged around the press to guide the press; one end of several springs is installed on the upper die seat, and the other end is against the press to transmit force to the press to press the top cover blank;

[0008] The lower die assembly includes: a lower die base, several limiters, a lower die cutting and shaping insert, a lower die cutting and flanging insert, a lower die fixing block and an ejector pin; wherein, several of the limiters are fixedly connected to the lower die base for jamming the upper die assembly; the lower die cutting and shaping insert, the lower die cutting and flanging insert and the lower die fixing block are fixedly connected in the cutting and flanging shaping working area on the lower die base, and the ejector pin is fixed on the lower die fixing block for pushing the cut waste out of the lower die fixing block.

[0009] The invention provides a set of simple and practical composite moulds for cutting, flanging and shaping of top covers, which do not use external equipment such as inclined wedges and cylinders, and directly realize the functions of cutting, flanging and shaping.

[0010] On the basis of the above technical solution, the present invention can also make the following improvements:

[0011] Preferably, a plurality of locking grooves for locking and positioning are provided at the front and rear of the upper die base and the lower die base.

[0012] Preferably, the upper die base is provided with a plurality of guide sleeves, and the lower die base is provided with a plurality of guide pillars, and the guide pillars are used in conjunction with the guide sleeves to play a guiding role when the mold is closed.

[0013] Guide pins and guide sleeves are arranged on the upper and lower mold bases to ensure that the relative positions of the cavities are correctly matched when the two mold bases are closed.

[0014] Preferably, the corners of the upper die base and the lower die base are each provided with an upper die lifting lug and a lower die lifting lug for facilitating lifting.

[0015] Preferably, the upper die base is provided with a plurality of upper die guide plates, and the lower die base is provided with a plurality of lower die guide plates. The upper die guide plates cooperate with the lower die base body, and the lower die guide plates cooperate with the upper die base body to play a guiding role when the upper and lower dies move.

[0016] Preferably, the lower mold assembly also includes a plurality of positioning plates for initially positioning the top cover blank.

[0017] Preferably, the lower die assembly further comprises a plurality of positioning pins for accurately positioning the top cover blank.

[0018] Preferably, the lower mold assembly also includes a plurality of storage containers used when the mold is stored and transported. The storage containers are only used when the mold is stored or transported and are not used during operation.

[0019] Preferably, the lower mold assembly also includes a support rack for supporting the top cover blank.

[0020] On the other hand, the present invention aims to provide a method for using a composite die for cutting and flanging a top cover, comprising:

[0021] 1) According to the above-mentioned top cover cutting, flanging and shaping composite die, the top cover blank before the modification is placed on the lower die base for positioning;

[0022] 2) The upper die assembly moves downward, and the presser first contacts the outside of the top cover blank, and the external profile of the top cover blank is pressed by the force transmitted by the spring;

[0023] 3) The upper die assembly continues to move downward, and the cutting edge of the upper die flanging and cutting insert contacts the cutting edges of the lower die cutting and shaping insert and the lower die cutting and flanging insert to cut and flanging the top cover blank;

[0024] 4) The upper die assembly continues to move downward, and the upper die shaping insert contacts the lower die cutting shaping insert to shape the cut parts; the upper die flanging cutting insert contacts the lower die fixed block to shape and demould the waste material cut from the middle of the top cover blank, and the cutting and flanging shaping is completed;

[0025] 5) The upper die assembly moves upward, and during the upward movement, the press and the spring return to their initial state; the staff first takes out the waste material cut in the middle, and then lifts out the two top cover blanks after cutting, and thus a working cycle is completed.

[0026] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0027] (1) The processing process of the present invention is simple, and no external auxiliary equipment such as a wedge or a cylinder is required, and the cutting, flanging and shaping functions can be directly realized. In addition, the size of the top cover blank parts is large, the mold is small, the mold opening cost is reduced, the production cost is reduced, and the parts placement cost, the parts transportation cost and the mold loading and unloading time are saved.

[0028] (2) The present invention changes the two sets of traditional cutting and flanging shaping dies into one set of top cover cutting and flanging shaping composite dies, thereby saving one set of dies and saving dies costs.

[0029] (3) The present invention performs one-time positioning, thereby reducing the error caused by repeated positioning and ensuring the stability of part dimensions. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0031] Figure 1 The accompanying drawing is a plan view of a lower mold of a composite mold for cutting and flanging the top cover provided by the present invention.

[0032] Figure 2 The accompanying drawing is a plan view of an upper die of a composite die for cutting and flanging a top cover provided by the present invention.

[0033] Figure 3The accompanying drawing is an axonometric view of a pressing device of a composite die for cutting and flanging the top cover provided by the present invention.

[0034] Figure 4 The attached picture is Figure 1 Schematic diagram of the cross section along the AA direction.

[0035] Figure 5 The attached picture is Figure 1 Schematic diagram of the cross section along the BB direction.

[0036] Among them, in the figure,

[0037] 100- Upper mold assembly,

[0038] 101-upper die seat, 102-die frame pad, 103-upper die shaping insert, 104-upper die flanging and cutting insert, 105-spring, 106-unloading screw, 107-guide sleeve, 108-upper die lifting ear;

[0039] 200-Presser assembly,

[0040] 201-piece pressing device, 202-piece pressing device guide plate;

[0041] 300-lower die assembly,

[0042] 301-lower die seat, 302-limiter, 303-lower die cutting and shaping insert, 304-lower die cutting and flanging insert, 305-lower die fixing block, 306-elevator pin, 307-guide column, 308-lower die lifting ear, 309-lower die guide plate, 310-positioning plate, 311-storage device, 312-support rack. DETAILED DESCRIPTION

[0043] Embodiments of the present invention are described in detail below, 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 be used to explain the present invention, and should not be construed as limiting the present invention.

[0044] In the description of the present invention, it is necessary to understand that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0045] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0046] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0048] Example:

[0049] According to the following Figure 1-5 A composite die for cutting and flanging a top cover according to an embodiment of the present invention is described in detail.

[0050] like Figure 1-5 As shown, the embodiment of the present invention discloses a composite mold for cutting and flanging a top cover, comprising: an upper mold assembly 100, a pressing assembly 200, and a lower mold assembly 300.

[0051] The upper die assembly 100 includes: an upper die base 101, a die frame pad 102, an upper die shaping insert 103, an upper die flanging and cutting insert 104, a spring 105, and a discharge screw 106; wherein,

[0052] The mold base pad 102 is fixedly connected to the middle part of the upper mold base 101 with screws, and is used to support the die pressing device assembly 200; the upper mold shaping insert 103 and the upper mold flanging cutting insert 104 are fixedly connected to the cutting and flanging shaping working area on the upper mold base 101 with screws and pins.

[0053] When the upper die is in the process of descending, the upper die flanging cutting insert 104 first contacts with the lower die cutting shaping insert 303 and the lower die cutting flanging insert 304 to realize cutting and flanging shaping.

[0054] When the upper die is in the process of descending, the upward shaping insert 103 contacts the lower die cutting shaping insert 303 to realize shaping.

[0055] The press assembly 200 includes two presses 201 and eight press guide plates 202. The two presses 201 are hung on the upper die base 101 by six unloading screws 106 respectively; the eight press guide plates 202 are respectively arranged at the front, back, left and right of the press 201 to guide the press 201; one end of the ten springs 105 is installed in the drilled hole on the upper die base 101, and the other end is against the press 201 to transmit the force to the press 201 to press the top cover blank.

[0056] When the upper die is in the downward process, the two pressers 201 rely on the force transmitted by the spring 105 to press the top cover blank tightly, so as to prevent the top cover blank from deforming during cutting and flanging, thereby ensuring the quality of the parts.

[0057] The lower die assembly 300 includes: a lower die base 301, a limiter 302, a lower die cutting and shaping insert 303, a lower die cutting and flanging insert 304, a lower die fixing block 305 and a spring-pull pin 306; wherein, four limiters 302 are fixedly connected to the lower die base 301 with screws, and are used to fix the upper die assembly 100; the lower die fixing block 305 is fixedly connected to the cutting and flanging shaping working area on the lower die base 301 with screws, and the lower die cutting and shaping insert 303 and the lower die cutting and flanging insert 304 are fixedly connected with screws and pins, and the spring-pull pin 306 is fixed to the lower die fixing block 305 by its own thread, and is used to push the cut waste out of the lower die fixing block 305.

[0058] When the upper die is in the process of descending, the lower die cutting and shaping insert 303 first contacts the upper die flanging cutting insert 104 to achieve cutting, and then contacts the upper die shaping insert 103 to achieve shaping.

[0059] When the upper die is in the process of descending, the lower die cutting and flanging insert 304 contacts the upper die flanging and cutting insert 104 to achieve cutting and flanging.

[0060] When the upper die is in the downward process, the lower die fixed block 305 contacts the upper die flanging cutting insert 104 to realize waste forming, prevent the waste from being stuck between the lower die cutting and shaping insert 303 and the lower die cutting and flanging insert 304, prevent the parts from being deformed during cutting and flanging shaping, and ensure the quality of the parts.

[0061] During the return stroke of the upper die, the cut waste material can be pushed out from the lower die fixed block 305 by the force transmitted by the ejector pin 306 .

[0062] In the technical solution of the above embodiment, three locking grooves for locking and positioning are provided at the front and rear of the upper mold base 101 and the lower mold base 301 .

[0063] In the technical solution of the above embodiment, the four corners of the upper mold base 101 are fixedly connected with four guide sleeves 107 by screws, and the four corners of the lower mold base 301 are fixedly connected with four guide pillars 307 by screws. The four guide pillars 307 are used in conjunction with the four guide sleeves 107 to play a guiding role when the mold is closed.

[0064] In the technical solution of the above embodiment, upper die lifting ears 108 for facilitating lifting are installed at the four corners of the upper die base 101, and lower die lifting ears 308 for facilitating lifting are installed at the four corners of the lower die base 301.

[0065] In the technical solution of the above embodiment, four upper mold guide plates are provided on the upper mold base 101, and four lower mold guide plates 309 are provided on the lower mold base 301. The upper mold guide plates are used in conjunction with the lower mold base body, and the lower mold guide plates 309 are used in conjunction with the upper mold base body, to play a guiding role when the upper and lower molds move. Specifically, the upper mold guide plates play a guiding role in the Y direction, and the lower mold guide plates 309 play a guiding role in the X direction.

[0066] In the technical solution of the above embodiment, the lower mold assembly 300 also includes six positioning plates 310 for initially positioning the top cover blank. Furthermore, the lower mold assembly 300 also includes several positioning pins for accurately positioning the top cover blank.

[0067] In the technical solution of the above embodiment, the lower mold assembly 300 also includes four storage containers 311 used when storing and transporting the mold. The four storage containers 311 are only used when storing or transporting the mold and are not used during operation.

[0068] In the technical solution of the above embodiment, the lower mold assembly 300 also includes a support frame 312 for supporting the top cover blank.

[0069] The embodiment of the present invention also discloses a method for using a composite die for cutting and flanging a top cover, comprising:

[0070] 1) According to the composite die for cutting and flanging the top cover described in the above embodiment, the top cover blank before the modification is placed on the lower die base 301 for positioning;

[0071] Specifically, the long top cover before the modification is placed on the lower die seat 301. The top cover blank part is initially positioned by six positioning plates 310 during the feeding process, and then accurately positioned by the die positioning pins and the fit between the part profile and the die profile;

[0072] 2) The upper die assembly 100 moves downward, and the press 201 first contacts the outside of the top cover blank, and the force transmitted by the spring 105 presses the outer surface of the top cover blank to prevent the top cover blank parts from deforming during the stamping process;

[0073] 3) The upper die assembly 100 continues to move downward, and the cutting edge of the upper die flanging and cutting insert 104 contacts the cutting edges of the lower die cutting and shaping insert 303 and the lower die cutting and flanging insert 304, thereby cutting and flanging the top cover blank;

[0074] 4) The upper die assembly 100 continues to move downward, and the upper die shaping insert 103 contacts the lower die cutting shaping insert 303 to shape the cut parts; the upper die flanging cutting insert 104 contacts the lower die fixing block 305 to shape and demould the waste material cut from the middle of the top cover blank, and the cutting and flanging shaping is completed;

[0075] In the above process, the pressing device 201 always presses the outer surface of the top cover blank part and as the compression amount of the spring 105 increases, the pressure increases and reaches the maximum value after the shaping is completed;

[0076] 5) The upper die assembly 100 moves upward, and during the upward movement, the press 201 and the spring 105 return to their initial state; the staff first takes out the waste material cut in the middle, and then lifts out the two top cover blanks after cutting, and thus a working cycle is completed.

[0077] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0078] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A composite die for cutting and flanging top cover, characterized in that: include: An upper mold assembly (100), a pressing device assembly (200), and a lower mold assembly (300), The upper die assembly (100) comprises: an upper die base (101), a die frame pad (102), an upper die shaping insert (103), an upper die flanging and cutting insert (104), a plurality of springs (105) and a plurality of unloading screws (106); wherein the die frame pad (102) is fixedly connected to the upper die base (101) and is used to fix the pressing device assembly (200); the upper die shaping insert (103) and the upper die flanging and cutting insert (104) are fixedly connected in a cutting and flanging shaping working area on the upper die base (101); The press assembly (200) comprises a press (201) and a plurality of press guide plates (202); the press (201) is hung on the upper die seat (101) via a plurality of unloading screws (106); a plurality of press guide plates (202) are arranged around the press (201) and are used to guide the press (201); one end of a plurality of springs (105) is mounted on the upper die seat (101) and the other end abuts against the press (201) to transmit a force to the press (201) to press the top cover blank; The lower die assembly (300) comprises: a lower die base (301), a plurality of limiters (302), a lower die cutting and shaping insert (303), a lower die cutting and flanging insert (304), a lower die fixing block (305) and an ejector pin (306); wherein the plurality of limiters (302) are fixedly connected to the lower die base (301) and used to fix the upper die assembly (100); the lower die cutting and shaping insert (303), the lower die cutting and flanging insert (304) and the lower die fixing block (305) are fixedly connected in a cutting and flanging shaping working area on the lower die base (301); and the ejector pin (306) is fixed to the lower die fixing block (305) and used to push the cut waste out of the lower die fixing block (305); The upper die base (101) and the lower die base (301) are both provided with a plurality of locking grooves for locking and positioning purposes at the front and rear. The upper die base (101) is provided with a plurality of guide sleeves (107), and the lower die base (301) is provided with a plurality of guide pillars (307). The guide pillars (307) are used in conjunction with the guide sleeves (107) to play a guiding role when the die is closed.

2. The composite die for cutting and flanging the top cover according to claim 1, characterized in that: The corners of the upper die base (101) and the lower die base (301) are each provided with an upper die lifting lug (108) and a lower die lifting lug (308) for facilitating lifting.

3. The composite die for cutting and flanging the top cover according to claim 1, characterized in that: The upper die base (101) is provided with a plurality of upper die guide plates, and the lower die base (301) is provided with a plurality of lower die guide plates (309). The upper die guide plates cooperate with the lower die base body, and the lower die guide plates (309) cooperate with the upper die base body to play a guiding role when the upper and lower dies move.

4. The top cover cutting and flanging shaping composite die according to claim 1, characterized in that: The lower die assembly (300) further comprises a plurality of positioning plates (310) for initially positioning the top cover blank.

5. The composite die for cutting and flanging the top cover according to claim 4, characterized in that: The lower die assembly (300) also includes a plurality of positioning pins for accurately positioning the top cover blank.

6. The composite die for cutting and flanging the top cover according to claim 1, characterized in that: The lower mold assembly (300) further comprises a plurality of storage containers (311) used when storing and transporting the mold.

7. The composite die for cutting and flanging the top cover according to claim 1, characterized in that: The lower die assembly (300) further comprises a support frame (312) for supporting the top cover blank.

8. A method for using a composite die for cutting and flanging a top cover, characterized in that: include: 1) According to the composite die for cutting and flanging the top cover according to any one of claims 1 to 7, the top cover blank before modification is placed on the lower die base (301) for positioning; 2) The upper die assembly (100) moves downward, and the pressing device (201) first contacts the outside of the top cover blank, and the external profile of the top cover blank is pressed by the force transmitted by the spring (105); 3) The upper die assembly (100) continues to move downward, and the cutting edge of the upper die flanging and cutting insert (104) contacts the cutting edges of the lower die cutting and shaping insert (303) and the lower die cutting and flanging insert (304), thereby cutting and flanging the top cover blank; 4) The upper die assembly (100) continues to move downward, and the upper die shaping insert (103) contacts the lower die cutting shaping insert (303) to shape the cut parts; the upper die flanging cutting insert (104) contacts the lower die fixing block (305) to shape the waste material cut in the middle of the top cover blank and demould it, and the cutting and flanging shaping is completed; 5) The upper die assembly (100) moves upward, and during the upward movement, the pressing device (201) and the spring (105) return to their initial state; the staff first takes out the waste material cut in the middle, and then lifts out the two top cover blanks after cutting, and thus a working cycle is completed.

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