CN223159948U - Sheet metal stamping combined die - Google Patents

Abstract

The utility model relates to the technical field of sheet metal stamping, in particular to a sheet metal stamping combined die which comprises a lower die holder, wherein guide posts are fixedly arranged at four corners on the lower die holder, a hydraulic cylinder is arranged at the top end of each guide post, an upper die holder is fixedly arranged at the end of each hydraulic cylinder, the upper die holder is arranged on the outer side of each guide post in a sliding mode and further comprises an elastic upper stamping die which is arranged on the upper die holder and used for propping against a sheet metal part, the lower stamping die is fixedly arranged on the lower die holder and matched with the elastic upper stamping die to form the sheet metal part, side plates are arranged on two sides of the elastic upper stamping die, and positioning parts matched with the side plates are arranged on the lower stamping die.

Description

Sheet metal stamping combined die

Technical Field

The utility model relates to the technical field of sheet metal stamping, in particular to a sheet metal stamping combined die.

Background

The core of the stamping process is that an external force is applied to a material by using a die with precise design under the drive of a press machine to promote the material to be separated or plastically deformed so as to be precisely formed into a part with a required shape, however, in practical operation, a common problem is that after the stamping process is finished, when the upper die finishes the stamping action and begins to reset, the machined sheet metal part often undergoes a certain degree of elastic recovery deformation, and the recovery deformation directly influences the final dimensional precision and the overall machining quality of the sheet metal part, so that the sheet metal part becomes a great challenge on a road for improving the product quality.

In order to effectively alleviate the problem, the traditional method is to make the upper die pause working for a period of time after the stamping is finished, and give the sheet metal part enough time to gradually stabilize the shape of the sheet metal part, namely a so-called pressure-maintaining shaping process, and although the method can improve the processing precision of the sheet metal part to a certain extent, the remarkable disadvantage is that the production period is prolonged, the production efficiency is reduced, and therefore, the sheet metal stamping combined die is provided.

Disclosure of utility model

In order to solve the technical problems, the embodiment of the application provides a sheet metal stamping combined die, which comprises a lower die holder, wherein guide columns are fixedly arranged at four corners on the lower die holder, a hydraulic cylinder is arranged at the top end of each guide column, an upper die holder is fixedly arranged at the end of each hydraulic cylinder, and the upper die holder is slidably arranged outside each guide column and further comprises:

The elastic upper stamping die is arranged on the upper die holder and used for propping against the sheet metal part;

The lower stamping die is fixedly arranged on the lower die holder and matched with the elastic upper stamping die to form the sheet metal part;

The side plates are arranged on two sides of the elastic upper stamping die, and the lower stamping die is provided with positioning pieces matched with the side plates.

In some embodiments, the elastic upper stamping die comprises a fixed sleeve fixedly arranged at the bottom of the upper die holder, a sliding block is arranged in the fixed sleeve in a sliding manner, one end of the sliding block, which is positioned in the fixed sleeve, is connected with a pressure maintaining spring, the other end of the pressure maintaining spring is fixedly connected with the fixed sleeve, and a punch is arranged at the other end of the sliding block.

In some embodiments, the two sides of the punch are provided with connecting plates, and the side plates are fixedly arranged at the end parts of the connecting plates.

In some embodiments, the connection plate is fixedly mounted to the punch by bolts.

In some embodiments, the positioning member is a positioning rod provided on the lower punch die, the positioning rod being provided in plurality and provided at four corners of the lower punch die, respectively.

In some embodiments, the outer surface of the side panel is roughened.

In some embodiments, the roller is rotatably arranged on the positioning rod, a friction layer is arranged on the outer side of the roller, the roller is rotatably arranged on the positioning rod through a one-way bearing, when the punch drives the side plate to move downwards, the side plate can drive the roller to rotate, and when the side plate moves upwards, sliding friction is generated between the side plate and the roller.

In some embodiments, the lower stamping die is provided with a moving groove, the positioning rod is slidably arranged in the moving groove, a supporting spring is fixedly arranged at the bottom end of the positioning rod, and the bottom end of the supporting spring is fixedly connected with the bottom of the moving groove.

In some embodiments, a through hole is formed in the lower punch die, one end of the through hole is connected with the moving groove, and the other end of the through hole extends into a forming groove in the lower punch die.

In some embodiments, the through hole has an inner diameter smaller than an inner diameter of the moving groove.

The utility model has at least the following beneficial effects:

1. The pressure maintaining function is enhanced, namely, through the design of the elastic upper stamping die, the pressure maintaining spring is utilized to realize prepressing in the stamping process, and the pressure on the sheet metal part is continuously maintained after the stamping is finished, so that rebound and deformation are effectively prevented, and the precision and the stability of the stamping part are improved;

2. The positioning rod on the lower stamping die not only ensures accurate positioning of the sheet metal part, but also provides additional stability in the stamping process through the matching of the side plate and the positioning rod, and further improves the forming quality;

3. The friction design of the side plate and the positioning rod which are optionally matched with the roller effectively delays the time of the pressure maintaining spring to drive the punch to move upwards, so that the pressure maintaining effect is more durable, and the full deformation and solidification of the material are facilitated;

4. The convenient demoulding design is that the demoulding process is simplified and the production efficiency is improved by pressing the positioning rod and utilizing the air pressure change of the moving groove and the through hole to assist the separation of the formed part from the mould;

5. The structure is flexible, the maintenance is easy, and all parts such as the punch, the side plate, the positioning rod and the like are connected through bolts or sliding, so that the disassembly and the replacement are convenient, and the maintenance cost is reduced.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic elevational view of the present utility model;

FIG. 3 is a schematic view of the structure of the elastic upper stamping die of the present utility model;

FIG. 4 is a schematic view of a structure of a positioning rod in a second embodiment of the present utility model;

FIG. 5 is a schematic cross-sectional view of the lower die of the present utility model;

fig. 6 is an enlarged schematic view of the structure of fig. 5 a according to the present utility model.

The drawing shows that the die comprises a lower die holder 1, an upper die holder 2, an elastic upper stamping die 3, a fixed sleeve 31, a sliding block 32, a pressure maintaining spring 33, a punch 34, a lower stamping die 4, a side plate 5, a locating piece 6, a locating rod 61, a roller 62, a connecting plate 7, a moving groove 8, a supporting spring 9 and a through hole 10.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1

Referring to fig. 1-3, the utility model provides a metal plate stamping combined die, which structurally comprises a lower die holder 1, a guide pillar, a hydraulic cylinder, an upper die holder 2, an elastic upper stamping die 3, a lower stamping die 4, a side plate 5, a positioning piece 6 and the like, and is specifically designed as follows:

The lower die holder 1 and the guide posts are fixedly provided with four guide posts on the lower die holder 1 for supporting and guiding the upper die holder 2 to move up and down.

The hydraulic cylinder and the upper die holder 2 are arranged at the top end of the guide post, the end part of the hydraulic cylinder is fixedly connected with the upper die holder 2, and the upper die holder 2 is lifted through hydraulic driving.

The elastic upper stamping die 3 comprises a fixed sleeve 31, a sliding block 32, a pressure maintaining spring 33 and a punch 34, wherein the sliding block 32 slides in the fixed sleeve 31, the pressure maintaining spring 33 provides pre-pressure, and the punch 34 is arranged at the other end of the sliding block 32 and is used for propping against a sheet metal part.

The lower stamping die 4 is fixedly arranged on the lower die holder 1 and is matched with the elastic upper stamping die 3 to finish the forming of the sheet metal part.

The side plates 5 and the locating pieces 6 are arranged on two sides of the elastic upper stamping die 3 and used for enhancing stability in the stamping process, the locating rods 61 are arranged on the lower stamping die 4 and used as the locating pieces 6, the locating pieces are matched with the side plates 5 to achieve accurate locating and limiting of sheet metal parts, when stamping is carried out, the punch 34 moves down to drive the side plates 5 to move down, friction is generated between the side plates 5 and the locating rods 61 at the moment, after stamping is completed, the punch 34 drives the side plates 5 to move up, friction exists between the side plates 5 and the locating rods 61 at the moment, therefore the upper die holder 2 moves in advance, the punch 34 still abuts against the sheet metal parts under the action of the pressure-keeping springs 33 to achieve pressure keeping, and when the upper die holder 2 moves up continuously, the punch 34 is driven to move, the side plates 5 are staggered with the locating rods 61, and the punch 34 resets at the moment.

Further, connecting plates 7 are arranged on two sides of the punch 34, and the side plates 5 are fixedly arranged at the end parts of the connecting plates 7, so that the installation and the replacement are convenient. The connecting plate 7 is fixedly arranged on the punch 34 through bolts, and the structure is compact and stable.

The outer surface of the side plate 5 is roughened to increase the friction between the side plate 5 and the positioning rod 61.

Example two

Referring to fig. 4, the second embodiment has the same main structure as the first embodiment, and is characterized in that a roller 62 is rotatably disposed on a positioning rod 61, a friction layer is disposed on an outer side of the roller 62, and the roller 62 is rotatably disposed on the positioning rod 61 through a one-way bearing, when the punch 34 drives the side plate 5 to move downward, the side plate 5 can drive the roller 62 to rotate, and when the side plate 5 moves upward, sliding friction is generated between the side plate 5 and the roller 62, so that the punch 34 can move downward smoothly when the punch 34 moves downward, and when the upper die holder 2 drives the punch 34 to move upward after the punching is completed, friction is generated between the side plate 5 and the roller 62.

Example III

Referring to fig. 5-6, in the third embodiment, a moving groove 8 is formed in the lower stamping die 4 based on the second embodiment, the positioning rod 61 is slidably disposed in the moving groove 8, a supporting spring 9 is fixedly disposed at the bottom end of the positioning rod 61, and the bottom end of the supporting spring 9 is fixedly connected with the bottom of the moving groove 8, so that when the upper die holder 2 drives the punch 34 and the side plate 5 to move upwards, the positioning rod 61 has a certain moving distance, which can prolong the dwell time and increase the forming effect of the sheet metal part.

The through hole 10 has been seted up in the lower stamping die 4, and through hole 10 one end is connected with the removal groove 8, and in the shaping inslot in the lower stamping die 4 is extended to the through hole 10 other end, and the internal diameter of through hole 10 is less than the internal diameter of removal groove 8, through pressing locating lever 61, utilizes the atmospheric pressure change of removal groove 8 and through hole 10, and auxiliary shaping piece breaks away from the mould, has simplified the drawing of patterns process, has improved production efficiency.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. The utility model provides a panel beating punching press assembling die, includes die holder (1), four corner fixedly is provided with the guide pillar on die holder (1), and the guide pillar top is provided with the pneumatic cylinder, and the fixed upper die holder (2) that is provided with of pneumatic cylinder tip, upper die holder (2) slide and set up in the guide pillar outside, its characterized in that still includes:

An elastic upper stamping die (3) which is arranged on the upper die holder (2) and used for propping against the sheet metal part;

The lower stamping die (4) is fixedly arranged on the lower die holder (1) and is matched with the elastic upper stamping die (3) to form the sheet metal part;

The side plates (5) are arranged on two sides of the elastic upper stamping die (3), and the lower stamping die (4) is provided with positioning pieces (6) matched with the side plates (5).

2. The sheet metal stamping combined die of claim 1, wherein the elastic upper stamping die (3) comprises a fixed sleeve (31) fixedly arranged at the bottom of the upper die holder (2), a sliding block (32) is arranged in the fixed sleeve (31) in a sliding mode, one end of the sliding block (32) located in the fixed sleeve (31) is connected with a pressure maintaining spring (33), the other end of the pressure maintaining spring (33) is fixedly connected with the fixed sleeve (31), and a punch (34) is arranged at the other end of the sliding block (32).

3. The sheet metal stamping assembling die according to claim 2, wherein connecting plates (7) are arranged on two sides of the punch (34), and the side plates (5) are fixedly arranged at the end parts of the connecting plates (7).

4. The sheet metal stamping assembling die according to claim 3, wherein the connecting plate (7) is fixedly mounted on the punch (34) through bolts.

5. The sheet metal stamping assembling die according to claim 4, wherein the positioning piece (6) is a positioning rod (61) arranged on the lower stamping die (4), and the positioning rods (61) are arranged in a plurality and are respectively arranged at four corners of the lower stamping die (4).

6. The sheet metal stamping assembling die according to claim 5, wherein the outer surface of the side plate (5) is roughened.

7. The sheet metal stamping assembling die of claim 6, wherein a roller (62) is rotatably arranged on the positioning rod (61), a friction layer is arranged on the outer side of the roller (62), the roller (62) is rotatably arranged on the positioning rod (61) through a one-way bearing, when the punch (34) drives the side plate (5) to move downwards, the side plate (5) can drive the roller (62) to rotate, and when the side plate (5) moves upwards, sliding friction is generated between the side plate (5) and the roller (62).

8. The sheet metal stamping combined die of claim 7, wherein the lower stamping die (4) is provided with a moving groove (8), the positioning rod (61) is slidably arranged in the moving groove (8), a supporting spring (9) is fixedly arranged at the bottom end of the positioning rod (61), and the bottom end of the supporting spring (9) is fixedly connected with the bottom of the moving groove (8).

9. The sheet metal stamping assembling die of claim 8, wherein a through hole (10) is formed in the lower stamping die (4), one end of the through hole (10) is connected with the movable groove (8), and the other end of the through hole (10) extends into a forming groove in the lower stamping die (4).

10. The sheet metal stamping assembling die according to claim 9, wherein the inner diameter of the through hole (10) is smaller than the inner diameter of the movable groove (8).