Buoyancy lifting positioning device for transfer die

Abstract

The utility model provides a floating positioning device for a transfer die, which is characterized in that a lower die stripper plate is arranged on the outer side of a lower die stripper plate and a lower die, a mounting hole vertically penetrates through the center of the lower die stripper plate and is matched with a lower die punch, a guide post is fixedly arranged at the lower end of the lower die stripper plate and is movably connected with the lower die, and the guide post is fixedly connected with the lower die. A punch groove is formed in the center of the lower end of the upper die forming block and matched with the lower die punch, an appearance positioning block is arranged on the outer side of the lower die stripper plate and can vertically slide along a through hole of the upper die forming block, the upper end of the floating positioning pin supports a material piece before bending, and the inner side of the appearance positioning block clamps the material piece before bending. A clamping groove is formed in the inner side of the floating positioning pin and is used for positioning a material sheet bent by the lower die punch; according to the utility model, the floating positioning pin with a special structure is adopted, an appearance positioning function is added, the positioning pin can be matched with the position of a shrinkage line of a material sheet, and the positioning function is realized while the material is floated, so that the material sheet is prevented from floating to generate shaking and deviation after deep drawing forming.

Description

Technical Field

[0001] The utility model relates to the technical field of transfer molds, in particular to a floating positioning device for transfer molds. Background Art

[0002] The existing transfer die requires a deep drawing process. In order to facilitate the robot to clamp the parts, space must be left between the sheet and the lower die after forming. The sheet needs to float. During the floating process, the sheet is prone to shaking and deflection due to the stamping vibration and the adsorption force of the drawing oil, which affects the blanking of the subsequent process. To prevent the sheet from shaking and deflecting, a positioning function needs to be added during the floating process of the sheet. Summary of the invention

[0003] The utility model aims to provide a floating positioning device for a transfer mold, which changes the shape structure on the basis of a floating material pin, increases the shape positioning function, and plays a positioning role while floating the material.

[0004] In order to achieve the above purpose, the technical solution of the utility model is:

[0005] A floating positioning device for a transfer mold, characterized in that it includes an upper mold forming block, a floating positioning pin, a lower mold stripper plate, a lower mold punch and a lower mold, which are arranged in sequence from top to bottom, the lower mold punch is fixedly connected to the center of the lower mold, the lower mold stripper plate and the outer side of the lower mold are vertically penetrated with a floating positioning pin, the center of the lower mold stripper plate is vertically penetrated with a mounting hole, the aperture of the mounting hole matches the outer diameter of the lower mold punch, the lower end of the lower mold stripper plate is fixedly provided with a guide column, the guide column is vertically movably connected to the lower mold, the When the lower die stripping plate descends to the upper end of the lower die, the upper end of the lower die punch is higher than the lower die stripping plate, and a punch groove is provided in the center of the lower end of the upper die forming block, and the punch groove cooperates with the shape of the upper end of the lower die punch. An outer shape positioning block is provided on the outer side of the lower die stripping plate, and the outer shape positioning block can slide vertically along the through hole on the outer side of the upper die forming block. The upper end of the floating positioning pin supports the sheet before bending, and the inner side of the outer shape positioning block clamps the sheet before bending. A slot is provided on the inner side of the floating positioning pin, and the slot positions the sheet after the lower die punch is bent.

[0006] Furthermore, the lower die punch includes a trapezoidal punch and a rectangular base integrally formed at the top and the bottom, and the outer diameter of the trapezoidal punch gradually increases from top to bottom.

[0007] Furthermore, the outer diameter of the rectangular base is larger than the inner diameter of the mounting hole, and the mounting hole and the rectangular base are tightly matched when the lower mold stripping plate is pressed downward.

[0008] Furthermore, the guide column is fixedly mounted on the lower end of one side of the lower die stripping plate, and a guide hole is vertically penetrated through one side of the lower die, and the guide column can slide vertically along the guide hole.

[0009] Furthermore, the cross section of the shape positioning block is L-shaped, and the upper end of the lower mold stripping plate is provided with a groove for accommodating the shape positioning block.

[0010] Furthermore, an inclined surface is provided on the inner side of the upper end of the outer shape positioning block.

[0011] The utility model adopts a floating positioning pin with a special structure and adds an outer shape positioning function. The positioning pin can match the position of the shrinkage line of the material sheet, float the material and play a positioning role at the same time, prevent the material sheet from floating up and causing shaking and deviation after deep drawing, and ensure the order of subsequent processes. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the initial state of the mold of the utility model;

[0013] Figure 2 It is a schematic diagram of the upper mold forming block of the utility model moving downward to contact the sheet;

[0014] Figure 3 It is a schematic diagram of the lower die stripping plate of the utility model pressing down to contact the lower die;

[0015] Figure 4 This is a schematic diagram of the utility model after the mold is re-opened.

[0016] Reference numerals:

[0017] 1 upper die forming block, 11 punch slot, 12 through hole,

[0018] 2 sheets, 3 shape positioning blocks, 31 slopes,

[0019] 4 floating positioning pins, 41 card slots,

[0020] 5 lower die stripping plate, 51 mounting hole, 52 guide column,

[0021] 6 lower die punch, 61 trapezoidal punch, 62 rectangular base,

[0022] 7 lower die, 71 guide hole. DETAILED DESCRIPTION

[0023] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0024] The utility model discloses a floating positioning device for a transfer mold, such as Figure 1As shown, it includes an upper die forming block 1, a floating positioning pin 4, a lower die stripping plate 5, a lower die punch 6 and a lower die 7 which are arranged in sequence from top to bottom. The lower die punch 6 is fixedly connected to the center of the lower die 7. The outer sides of the lower die stripping plate 5 and the lower die 7 are vertically penetrated by a floating positioning pin 4. The center of the lower die stripping plate 5 is vertically penetrated by a mounting hole 51. The aperture of the mounting hole 51 matches the outer diameter of the lower die punch 6. The lower die punch 6 includes a trapezoidal punch 61 and a rectangular base 62 which are integrally formed in an upper and lower manner. The outer diameter of the trapezoidal punch 61 gradually increases from top to bottom. The outer diameter of the rectangular base 62 is larger than the inner diameter of the mounting hole 51. When the lower die stripping plate 5 is pressed downward, the mounting hole 51 undergoes a certain elastic deformation so as to fit tightly with the rectangular base 62.

[0025] A guide column 52 is fixedly provided at the lower end of the lower mold stripper plate 5, and the guide column 52 is movably connected to the lower mold 7 along the vertical direction. The guide column is fixedly installed at the lower end of one side of the lower mold stripper plate 5, and a guide hole 71 is vertically penetrated through one side of the lower mold 7, and the guide column 52 can slide vertically along the guide hole 71.

[0026] When the lower die stripping plate 5 descends to the upper end of the lower die 7, the upper end of the lower die punch 6, that is, the trapezoidal punch 61 is higher than the lower die stripping plate 5 as a whole. A punch groove 11 is provided in the center of the lower end of the upper die forming block 1, and the punch groove 11 is matched with the shape of the upper end of the lower die punch 6. An outer side of the lower die stripping plate 5 is provided with an outer shape positioning block 3, and the outer shape positioning block 3 can slide vertically along the through hole 12 on the outer side of the upper die forming block 1.

[0027] The cross-section of the shape positioning block 3 is L-shaped, and the horizontal bottom edge of the L-shaped structure of the shape positioning block 3 extends outward. The upper end of the lower die stripping plate 5 is provided with a groove for accommodating the shape positioning block 3, and the inner side of the upper end of the shape positioning block 3 is provided with a slope 31. The sheet 2 before bending slides to the upper end of the floating positioning pin 4 through the slope 31, and the sheet 2 before bending is supported by the upper end of the floating positioning pin 4. The inner side of the shape positioning block 3 clamps the sheet 2 before bending, and the inner side of the floating positioning pin 4 is provided with a slot 41, which positions the sheet 2 after bending by the lower die punch 6.

[0028] When the utility model floating positioning device is used, Figure 1 As shown, the blank 2 is first placed on the floating positioning pin 4 in the mold open state, and the horizontal position of the blank 2 is fixed by the shape positioning block 3. During stamping, the upper mold forming block 1 is pressed down under the force of the punch press.

[0029] like Figure 2 As shown, the punch press force presses down the floating positioning pin 4 until the sheet 2 contacts the lower die stripper plate 5, and the punch press continues to move downward. The lower die stripper plate 5 is pressed downward and applies an elastic pressure to the sheet 2. The lower die punch 6 presses the sheet 2 into the upper die forming block 1, and the sheet 2 shrinks and forms, completing the downward pressing and forming action. Figure 3At this time, the contraction line of the sheet 2 is just stuck in the slot 41 of the floating positioning pin 4.

[0030] When reopening the mold, the upper mold forming block 1 moves upward under the force of the punch press, and the lower mold stripper plate 5 pulls the blank 2 out of the lower mold punch 6. The blank 2 is separated from the lower mold stripper plate 5 during the floating positioning of the floating positioning pin 4. At this time, there is a distance between the blank 2 and the lower mold stripper plate 5, which is convenient for the robot to clamp the blank 2 to complete the mold opening action. Figure 4 When the sheet 2 floats up, it is in the slot 41 of the floating positioning pin 4, ensuring that the floating is stable and does not deviate.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A floating positioning device for a transfer mold, characterized in that: The invention comprises an upper die forming block (1), a floating positioning pin (4), a lower die stripping plate (5), a lower die punch (6) and a lower die (7) which are arranged in sequence from top to bottom. The lower die punch (6) is fixedly connected to the center of the lower die (7). A floating positioning pin (4) is vertically penetrated through the outer sides of the lower die stripping plate (5) and the lower die (7). A mounting hole (51) is vertically penetrated through the center of the lower die stripping plate (5). The diameter of the mounting hole (51) matches the outer diameter of the lower die punch (6). A guide column (52) is fixedly provided at the lower end of the lower die stripping plate (5). The guide column (52) is vertically movably connected to the lower die (7). The lower die stripping plate (5) is lowered to the lower die (7). When at the upper end, the upper end of the lower die punch (6) is higher than the lower die stripping plate (5), a punch groove (11) is provided in the center of the lower end of the upper die forming block (1), and the punch groove (11) matches the shape of the upper end of the lower die punch (6), and an outer shape positioning block (3) is provided on the outer side of the lower die stripping plate (5), and the outer shape positioning block (3) can slide vertically along the through hole (12) on the outer side of the upper die forming block (1), and the upper end of the floating positioning pin (4) supports the sheet (2) before bending, and the inner side of the outer shape positioning block (3) clamps the sheet (2) before bending, and the inner side of the floating positioning pin (4) is provided with a slot (41), and the slot (41) positions the sheet (2) after the lower die punch (6) is bent.

2. The floating positioning device for transfer mold according to claim 1, characterized in that: The lower die punch (6) comprises a trapezoidal punch (61) and a rectangular base (62) which are integrally formed from top to bottom, and the outer diameter of the trapezoidal punch (61) gradually increases from top to bottom.

3. The floating positioning device for transfer mold according to claim 2, characterized in that: The outer diameter of the rectangular base (62) is greater than the inner diameter of the mounting hole (51), and when the lower die stripping plate (5) is pressed downward, the mounting hole (51) and the rectangular base (62) are tightly matched.

4. The floating positioning device for transfer mold according to claim 1, characterized in that: The guide column (52) is fixedly mounted on the lower end of one side of the lower die stripping plate (5); a guide hole (71) is vertically penetrated through one side of the lower die (7); and the guide column (52) can slide vertically along the guide hole (71).

5. The floating positioning device for transfer mold according to claim 1, characterized in that: The cross section of the outer shape positioning block (3) is L-shaped, and the upper end of the lower die stripping plate (5) is provided with a groove for accommodating the outer shape positioning block (3).

6. The floating positioning device for transfer mold according to claim 1 or 5, characterized in that: An inclined surface (31) is provided on the inner side of the upper end of the outer shape positioning block (3).

Images