Drawing die for automobile fender

Abstract

The utility model discloses an automobile fender stretching die which comprises a lower die and an upper die located above the lower die, a male die block is installed at the bottom of the upper die, and a lower die groove is formed in the top of the lower die. And the guide assembly can guide and position the upper mold and the lower mold, and deviation caused by splicing of the upper mold and the lower mold is prevented. The problems that when an existing mold is spliced up and down, the guiding effect is poor, mold splicing deviation is likely to happen, a guiding structure is likely to be damaged, and an operator cannot disassemble and assemble the guiding structure conveniently for replacement are solved. The problems that in the prior art, the stability of positioning and fixing a workpiece by a mold is low, the workpiece is prone to shifting, demolding operation is tedious after mold machining is completed, the workpiece cannot be conveniently taken out, and the precision and practicability of workpiece production by the mold are affected are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile fender processing dies, in particular to an automobile fender stretching die. Background Art

[0002] Fenders are the parts of the body of a car, motorcycle or other vehicle that form the wheel well (the bottom of the fender). Their main purpose is to prevent the rotating tires from throwing sand, dirt, rocks, liquids and other road splashes into the air. Fenders are usually rigid and may be damaged by contact with the road surface. Molds are usually used in the production and processing of fenders. Existing molds are prone to offset or shaking when spliced ​​up and down, affecting the accuracy of the workpiece production and processing.

[0003] The existing mold has a poor guiding effect when the upper and lower parts are spliced ​​together, which easily leads to the mold splicing being offset, the guiding structure is easily damaged, and it is not convenient for operators to disassemble and replace the guiding structure. The stability of the mold in positioning and fixing the workpiece is low, and the workpiece is easily displaced. After the mold is processed, the demoulding operation is cumbersome, and the workpiece cannot be conveniently removed, which affects the accuracy and practicality of the mold production workpiece. Therefore, those skilled in the art provide a car fender stretching mold to solve the problems raised in the above background technology. Utility Model Content

[0004] The utility model aims to provide a automobile fender stretching die to solve the problems raised in the above background technology.

[0005] To achieve the above purpose, the utility model provides the following technical solutions: a car fender stretching die, comprising a lower die and an upper die located above the lower die, a convex die block is installed at the bottom of the upper die, a lower die groove is opened at the top of the lower die, a movable die plate is connected to the bottom of the lower die, and a movable die strip is connected to the bottom of the lower die and located on one side of the movable die plate;

[0006] A guide assembly is installed between the upper mold and the lower mold, a plurality of positioning assemblies for fixing workpieces are installed on the top of the lower mold, a demoulding assembly is installed at the bottom of the lower mold and at the bottom of the movable mold plate, and the movable mold plate and the movable mold bar are slidably connected to the lower mold.

[0007] Preferably: the positioning assembly includes a plurality of screws installed around the top of the lower mold, grooves are provided around the top of the lower mold and located on the outside of the screws, two movable cavities are provided at the bottom of the grooves, the inner side of the movable cavity is connected to a first guide rod, the outer side of the first guide rod is sleeved with a first spring, the top of the first spring is connected to a connecting rod, the two ends of the first spring are fixedly connected to the movable cavity and the connecting rod respectively, and the connecting rod is slidably connected to the movable cavity.

[0008] Preferably, the positioning assembly further comprises a driving ring sleeved on the outside of the screw, a pressing block located inside the groove and outside the screw, the screw passes through the driving ring and is threadedly connected thereto, and the screw passes through the pressing block and is movably connected thereto.

[0009] Preferably: the guide assembly includes placement through holes opened around the top of the upper mold, the inner side of the placement through holes is connected to guide columns, and guide grooves are respectively opened around the top of the lower mold, the guide columns are movably connected to the placement through holes, and the guide columns are movably connected to the guide grooves.

[0010] Preferably: the guide assembly also includes a sealing portion connected to the top of the guide column, a fixing plate is installed at the top of the placement through hole and at the top of the sealing portion, movable grooves are respectively opened on both sides of the placement through hole, and the fixing plate and the movable groove are installed by two bolts.

[0011] Preferably: the demolding assembly includes a plurality of fixed cavities opened at the bottom of the lower mold and located below the movable mold plate, the bottom of the fixed cavity is connected to a second guide rod, the outer side of the second guide rod is sleeved with a second spring, the top of the second spring is connected to a push-mold ring, and the two ends of the second spring are respectively fixedly connected to the fixed cavity and the push-mold ring.

[0012] Preferably: the demoulding assembly further comprises a limiting ring connected to the top of the inner side of the fixed cavity, the limiting ring is located outside the push die ring, the push die ring is slidably connected to the limiting ring, and the cross section of the push die ring is an "I" shape.

[0013] Preferably: a plurality of movable through holes are opened at the bottom of the lower mold, a fixing ring is connected to the top of the movable through hole, a positioning bolt is passed through the bottom of the movable mold bar and located inside the movable through hole, the positioning bolt is slidably connected to the movable through hole, and the positioning bolt is threadedly connected to the movable mold bar.

[0014] Preferably, two positioning grooves are provided on the top of the pressing block, and two positioning rods are connected to the bottom of the driving ring, and the positioning rods are movably connected to the positioning grooves.

[0015] Preferably, one end of the pressing block is connected to a pressing portion, and the cross-section of the pressing portion is rectangular.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. In the utility model, by setting a movable platen and a movable mold bar, the upper mold and the lower mold are spliced ​​to process the workpiece, so that the convex mold at the bottom of the upper mold is embedded in the lower mold groove at the top of the lower mold. The movable platen and the movable mold bar are located in the lower mold groove at the bottom of the lower mold. The demoulding assembly can push the movable platen and the movable mold bar to move upward in the lower mold groove to push the workpiece. The guide assembly can be used to guide and position the upper mold and the lower mold to prevent the upper mold and the lower mold from being offset. The positioning assembly can press down and fix the edge of the workpiece to prevent the workpiece from shifting, thereby improving the accuracy and practicality of the equipment in producing and processing the workpiece.

[0018] 2. In the utility model, by arranging a screw rod, a first spring, a connecting rod, a driving ring and a pressing block, the groove can provide a placement space for the pressing block, the first spring in the movable cavity can support the pressing block upward, and the screw rod can press the pressing block downward through the driving ring, so that multiple pressing blocks can press down and position the workpiece in the lower die groove, prevent the workpiece from being offset, and improve the accuracy of processing the workpiece by the upper and lower dies.

[0019] 3. In the utility model, by providing a guide column, a guide groove, a sealing part and a fixing plate, the guide column can be separated from the placement through hole, the sealing part at the top of the guide column is sealed with the top of the placement through hole, and two bolts are inserted through the fixing plate into the movable groove to install and fix the fixing plate, so that the fixing plate installs and fixes the guide column. The upper mold drives the guide column to be inserted into the guide groove at the top of the lower mold, so that the guide column guides and positions the upper mold, improving the convenience of disassembling and replacing the guide column. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a left-side cutaway stereoscopic view of the overall structure of the utility model;

[0022] Figure 3 The front cutaway view of the overall structure of the utility model is Figure 1 ;

[0023] Figure 4 The front cutaway view of the overall structure of the utility model is Figure 2 ;

[0024] Figure 5 The overall structure of the utility model Figure 2 Enlarged view of point A in the middle;

[0025] Figure 6 The overall structure of the utility model Figure 3 Enlarged view of point B in the middle;

[0026] Figure 7 The overall structure of the utility model Figure 4 Enlarged view of point C in the middle;

[0027] Figure 8 It is a structural schematic diagram of the upper mold, placement through hole, guide column, sealing part, fixed plate and movable groove in the overall structure of the utility model;

[0028] Fig. 9 It is a structural schematic diagram of the lower mold, lower mold groove, movable mold plate, movable mold strip, groove and guide groove in the overall structure of the utility model.

[0029] In the figure: 1. lower mold; 2. upper mold; 3. convex mold block; 4. lower mold groove; 5. movable mold plate; 6. movable mold strip; 7. screw; 8. groove; 9. movable cavity; 10. first guide rod; 11. first spring; 12. connecting rod; 13. driving ring; 14. pressing block; 15. placement through hole; 16. guide column; 17. guide groove; 18. sealing part; 19. fixed plate; 20. movable groove; 21. fixed cavity; 22. second guide rod; 23. second spring; 24. ejector ring; 25. limit ring; 26. movable through hole; 27. fixed ring; 28. positioning bolt; 29. ​​positioning groove; 30. positioning rod; 141. pressing part. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] See also Figures 1 to 9 In the embodiment of the utility model, a car fender stretching die comprises a lower die 1 and an upper die 2 located above the lower die 1. A convex die block 3 is installed at the bottom of the upper die 2, a lower die groove 4 is opened at the top of the lower die 1, a movable die plate 5 is connected to the bottom of the lower die 1, and a movable die strip 6 is connected to the bottom of the lower die and located on one side of the movable die plate 5. A guide assembly is installed between the upper die 2 and the lower die 1, a plurality of positioning assemblies for fixing workpieces are installed at the top of the lower die 1, a demoulding assembly is installed at the bottom of the lower die 1 and located at the bottom of the movable die plate 5, and the movable die plate 5 and the movable die strip 6 are slidably connected to the lower die 1.

[0032] When in use, the upper mold 2 is spliced ​​with the lower mold 1 to process the workpiece, so that the convex mold 3 at the bottom of the upper mold 2 is embedded in the lower mold groove 4 at the top of the lower mold 1. The movable mold plate 5 and the movable mold bar 6 are located in the lower mold groove 4 at the bottom of the lower mold 1. The demoulding assembly can push the movable mold plate 5 and the movable mold bar 6 to move upward in the lower mold groove 4 to push the workpiece. The guide assembly can guide and position the upper mold 2 and the lower mold 1 to prevent the upper mold 2 and the lower mold 1 from shifting. The positioning assembly can press down and fix the edge of the workpiece to prevent the workpiece from shifting, thereby improving the accuracy and practicality of the equipment in producing and processing the workpiece.

[0033] In one embodiment, the positioning assembly includes a plurality of screws 7 installed around the top of the lower mold 1, and grooves 8 are provided around the top of the lower mold 1 and on the outside of the screws 7. Two movable cavities 9 are provided at the bottom of the grooves 8. A first guide rod 10 is connected to the inside of the movable cavity 9, and a first spring 11 is mounted on the outside of the first guide rod 10. A connecting rod 12 is connected to the top of the first spring 11.

[0034] The positioning assembly also includes a driving ring 13 sleeved on the outside of the screw 7, a pressure block 14 located inside the groove 8 and outside the screw 7, and two positioning grooves 29 are opened on the top of the pressure block 14. Two positioning rods 30 are connected to the bottom of the driving ring 13, and one end of the pressure block 14 is connected to a pressure part 141, and the cross section of the pressure part 141 is rectangular. The positioning rod 30 is movably connected to the positioning groove 29. The screw 7 penetrates the driving ring 13 and is screwed thereto, and the screw 7 penetrates the pressure block 14 and is movably connected thereto. The two ends of the first spring 11 are fixedly connected to the active cavity 9 and the connecting rod 12 respectively, and the connecting rod 12 is slidably connected to the active cavity 9.

[0035] The groove 8 can provide a placement space for the pressing block 14, the first spring 11 in the movable cavity 9 can support the pressing block 14 upward, and the screw 7 can press the pressing block 14 downward by driving the ring 13. The positioning groove 29 positions the driving ring 13 through the positioning rod 30, and the pressing portion 141 at the end of the pressing block 14 can extend the pressing length of the pressing block 14, so that multiple pressing blocks 14 can press down and position the workpiece in the lower die groove 4, prevent the workpiece from being offset, and improve the accuracy of the upper die 2 and the lower die 1 in processing the workpiece.

[0036] Furthermore, the guide assembly includes a placement through hole 15 opened around the top of the upper mold 2, a guide column 16 is connected to the inner side of the placement through hole 15, and guide grooves 17 are respectively opened around the top of the lower mold 1. The guide assembly also includes a sealing portion 18 connected to the top of the guide column 16, a fixing plate 19 is installed at the top of the placement through hole 15 and located at the top of the sealing portion 18, and movable grooves 20 are respectively opened on both sides of the placement through hole 15. The fixing plate 19 and the movable groove 20 are installed by two bolts, and the guide column 16 is movably connected to the placement through hole 15, and the guide column 16 is movably connected to the guide groove 17.

[0037] In one embodiment, the guide post 16 can be separated from the placement through hole 15, and the sealing portion 18 at the top of the guide post 16 is sealed with the top of the placement through hole 15. Two bolts are inserted through the fixing plate 19 and inserted into the movable groove 20 to install and fix the fixing plate 19, so that the fixing plate 19 installs and fixes the guide post 16. The upper mold 2 drives the guide post 16 to be inserted into the guide groove 17 at the top of the lower mold 1, so that the guide post 16 guides and positions the upper mold 2, improving the convenience of disassembling and replacing the guide post 16.

[0038] The demoulding assembly includes a plurality of fixed cavities 21 opened at the bottom of the lower mold 1 and located below the movable mold plate 5. The bottom of the fixed cavity 21 is connected to a second guide rod 22. A second spring 23 is sleeved on the outside of the second guide rod 22. A mold ejection ring 24 is connected to the top of the second spring 23. The demoulding assembly also includes a limit ring 25 connected to the top of the inner side of the fixed cavity 21. The limit ring 25 is located on the outside of the mold ejection ring 24. The mold ejection ring 24 is slidably connected to the limit ring 25. The cross section of the mold ejection ring 24 is in the shape of an "I". The two ends of the second spring 23 are fixedly connected to the fixed cavity 21 and the mold ejection ring 24 respectively.

[0039] When in use, the limiting ring 25 can limit the ejection ring 24 to prevent the ejection ring 24 from being separated from the fixed cavity 21, and the second spring 23 can support the ejection ring 24 upward. Then, the plurality of ejection rings 24 respectively push the movable die plate 5 and the movable die strip 6 upward. After the processing is completed, the upper die 2 drives the male die 3 to move upward, and the movable die plate 5 and the movable die strip 6 push the workpiece in the lower die groove 4 upward to demould, thereby improving the convenience of removing the workpiece.

[0040] In one embodiment, a plurality of movable through holes 26 are provided at the bottom of the lower mold 1, and a fixing ring 27 is connected to the top of the movable through hole 26. A positioning bolt 28 is passed through the bottom of the movable mold bar 6 and located inside the movable through hole 26. The positioning bolt 28 is slidably connected to the movable through hole 26, and the positioning bolt 28 is screwed to the movable mold bar 6. The movable through hole 26 can facilitate the screwing installation of the positioning bolt 28 and the movable mold bar 6, and the fixing ring 27 can limit the positioning bolt 28. The positioning bolt 28 can slide in the movable through hole 26, and the positioning bolt 28 can position the movable mold bar 6 to prevent the movable mold bar 6 from deflecting or shaking, and also facilitate the upward movement of the movable mold bar 6 to push the workpiece to demold.

[0041] First, place the workpiece in the lower die groove 4 at the bottom of the lower die 1, and then rotate the screw 7. At this time, the screw 7 drives the driving ring 13 to move downward, and at the same time, the limiting rod at the bottom of the driving ring 13 is inserted into the limiting groove at the top of the pressure block 14. At this time, the driving ring 13 presses the pressure block 14 downward into the groove 8, and the pressure block 14 presses down the first spring 11. Multiple pressure blocks 14 and the pressure part 141 press down and position the edge of the workpiece. Then, the upper die 2 and the lower die 1 are spliced ​​to process the workpiece. At this time, the convex module 3 at the bottom of the upper die 2 is embedded in the lower die groove 4 at the top of the lower die 1. When the workpiece is processed, the upper die 2 drives the lower convex module 3 to move upward. At this time, the second spring 23 supports the ejection die ring 24 upward, and then the multiple ejection die rings 24 push the movable die plate 5 and the movable die strip 6 upward respectively, and then the movable die plate 5 and the movable die strip 6 push the workpiece in the lower die groove 4 upward to demold, and at the same time, the movable die strip 6 drives the positioning bolt 28 to slide in the movable through hole 26.

[0042] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A car fender stretching die, comprising a lower die (1) and an upper die (2) located above the lower die (1), characterized in that: A convex module (3) is installed at the bottom of the upper mold (2), a lower mold groove (4) is opened at the top of the lower mold (1), a movable mold plate (5) is connected to the bottom of the lower mold (1), and a movable mold strip (6) is connected to the bottom of the lower mold groove and located on one side of the movable mold plate (5); A guide assembly is installed between the upper mold (2) and the lower mold (1); a plurality of positioning assemblies for fixing workpieces are installed on the top of the lower mold (1); a demoulding assembly is installed at the bottom of the lower mold (1) and at the bottom of the movable mold plate (5); the movable mold plate (5) and the movable mold bar (6) are slidably connected to the lower mold (1).

2. The automobile fender stretching die according to claim 1, characterized in that: The positioning assembly comprises a plurality of screw rods (7) mounted around the top of the lower mold (1); grooves (8) are provided around the top of the lower mold (1) and located outside the screw rods (7); two movable cavities (9) are provided at the bottom of the grooves (8); a first guide rod (10) is connected to the inside of the movable cavity (9); a first spring (11) is sleeved on the outside of the first guide rod (10); a connecting rod (12) is connected to the top of the first spring (11); two ends of the first spring (11) are fixedly connected to the movable cavity (9) and the connecting rod (12) respectively; and the connecting rod (12) is slidably connected to the movable cavity (9).

3. The automobile fender stretching die according to claim 2, characterized in that: The positioning assembly further comprises a driving ring (13) sleeved on the outside of the screw rod (7), a pressing block (14) located inside the groove (8) and outside the screw rod (7), the screw rod (7) passing through the driving ring (13) and being threadedly connected thereto, and the screw rod (7) passing through the pressing block (14) and being movably connected thereto.

4. The automobile fender stretching die according to claim 1, characterized in that: The guide assembly comprises a placement through hole (15) formed around the top of the upper mold (2), a guide column (16) being connected to the inner side of the placement through hole (15), and guide grooves (17) being formed around the top of the lower mold (1), the guide column (16) being movably connected to the placement through hole (15), and the guide column (16) being movably connected to the guide groove (17).

5. The automobile fender stretching die according to claim 4, characterized in that: The guide assembly further comprises a sealing portion (18) connected to the top of the guide column (16); a fixing plate (19) is installed at the top of the placement through hole (15) and at the top of the sealing portion (18); movable grooves (20) are respectively provided on both sides of the placement through hole (15); and the fixing plate (19) and the movable groove (20) are mounted by two bolts.

6. The automobile fender stretching die according to claim 1, characterized in that: The demoulding assembly comprises a plurality of fixed cavities (21) opened at the bottom of the lower mold (1) and located below the movable mold plate (5); a second guide rod (22) is connected to the bottom of the fixed cavity (21); a second spring (23) is sleeved on the outer side of the second guide rod (22); a mold ejection ring (24) is connected to the top of the second spring (23); and two ends of the second spring (23) are fixedly connected to the fixed cavity (21) and the mold ejection ring (24), respectively.

7. The automobile fender stretching die according to claim 6, characterized in that: The demoulding assembly further comprises a limiting ring (25) connected to the top of the inner side of the fixed cavity (21), the limiting ring (25) being located outside the ejection ring (24), the ejection ring (24) being slidably connected to the limiting ring (25), and the ejection ring (24) having an "I"-shaped cross section.

8. The automobile fender stretching die according to claim 2, characterized in that: The bottom of the lower mold (1) is provided with a plurality of movable through holes (26), the top of the movable through hole (26) is connected with a fixing ring (27), the bottom of the movable mold strip (6) and the inner side of the movable through hole (26) is penetrated by a positioning bolt (28), the positioning bolt (28) is slidably connected to the movable through hole (26), and the positioning bolt (28) is threadedly connected to the movable mold strip (6).

9. The automobile fender stretching die according to claim 3, characterized in that: The top of the pressing block (14) is provided with two positioning grooves (29), and the bottom of the driving ring (13) is connected with two positioning rods (30), and the positioning rods (30) are movably connected to the positioning grooves (29).

10. The automobile fender stretching die according to claim 3, characterized in that: One end of the pressing block (14) is connected to a pressing portion (141), and the cross-section of the pressing portion (141) is rectangular.

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