Drawing die capable of guaranteeing drawing quality
By using bolts to fasten the press plate and set up the cutting plate in the deep drawing mold, the problem of displacement and demolding difficulties in the pressure plate in traditional molds is solved, and high-quality deep drawing operation and automatic deduplication function are achieved.
Patent Information
- Application Number
- CN202420445368.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-08
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-03-08
AI Technical Summary
During the process of drawing, traditional deep drawing molds have insufficient pressing force provided by the spring, which causes the pressing plate to displace when it is subjected to the reaction force of the workpiece, which cannot effectively limit the wrinkling of the workpiece surface, affecting the quality of the drawing. At the same time, traditional molds also have difficulties in the mold release process, and it is necessary to consider how to replace the mold release function of the spring-type pressing plate.
A simple structure and clever design of the depth drawing mold is designed. By opening a material groove on the bottom end surface of the fixed pressure plate and tightening the pressure plate on the support with bolts, it ensures that the pressure plate does not move during the depth drawing process. In addition, the mold is equipped with at least one pair of material stripping plates, and the material stripping plate makes a positioning action when the workpiece is downward to realize automatic material stripping operation.
It effectively prevents the pressure plate from displaced due to reaction force during the deep drawing process, ensuring the quality of the deep drawing operation and the product pass rate and quality. At the same time, the function of automatic material peeling is realized, simplifying the mold release process and improving production efficiency.
Smart Images
Figure CN222643013U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of stamping dies, in particular to a drawing die which can ensure the drawing quality. Background Art
[0002] When performing forming processing on certain metal materials, a stamping process is often required. The stamping die used in the stamping process generally includes an upper die and a lower die. The upper die and the lower die are respectively provided with dies. The upper die moves toward the lower die under the drive of the forming machine. During the movement, the semi-finished product between the upper and lower dies is squeezed into a shape that matches the die to form a workpiece.
[0003] When performing the deep drawing operation of a cylindrical workpiece, it is first necessary to use a pressing plate to place the sheet blank on the lower die, and then the upper die moves downward under the action of the punch to draw the sheet blank and punch it into a cylindrical shape. In traditional drawing dies, relative movement cannot occur between the pressing plate and the surface of the die below it during the drawing process. In order to prevent this relative movement, the traditional solution is to use a spring to press the pressing plate against the surface of the die. Since the pressing force that the spring can provide is limited, when the pressing force is insufficient, the blank wrinkles during the drawing process and pushes the pressing plate to move. Once the pressing plate moves, it cannot limit the wrinkling on the workpiece surface. This situation may affect the surface quality of the workpiece after drawing at the least, or cause the workpiece to wrinkle and accumulate at the worst, resulting in drawing failure.
[0004] At the same time, the traditional spring-type pressing plate can also push down the workpiece wrapped outside the upper die during the return phase of the stamping action, thereby realizing the demoulding action of the workpiece. If the spring-type pressing plate is modified, it is also necessary to consider what structure to use to replace its demoulding function. This also adds a certain degree of difficulty to the modification of the traditional spring-type pressing plate.
[0005] Therefore, a method or device capable of solving the above problems is now needed. Summary of the invention
[0006] The utility model aims to solve the above-mentioned deficiencies in the prior art and proposes a drawing die which has a simple structure, ingenious design, reasonable layout, can ensure the drawing effect, and can realize automatic stripping.
[0007] The technical solution of the utility model is: a drawing die capable of ensuring the quality of drawing, comprising an upper die seat 1 and a lower die seat 2, characterized in that: a drawing punch 3 is arranged on the bottom end surface of the upper die seat 1, a support 4 is arranged on the top end surface of the lower die seat 2, a drawing die 5 and a fixed pressing plate 6 are arranged in sequence above the support 4, a material groove 7 is provided on the bottom end surface of the fixed pressing plate 6, the inlet side of the material groove 7 is connected with the side surface of the fixed pressing plate 6, and the fixed pressing plate 6 is fixedly connected with the drawing die 5 by a plurality of bolts 8,
[0008] The support 4, the drawing die 5 and the fixed pressing plate 6 are all provided with a groove 9 matching the drawing punch 3.
[0009] At least one pair of stripping plates 10 is disposed on the top of the support 4. The stripping plates 10 are rotatably supported on the support 4 through a rotating shaft. A driving inclined surface 11 is disposed at one end of the stripping plate 10, and a counterweight portion 12 is disposed at the other end. The driving inclined surface 11 is located in the groove 9.
[0010] The support 4 is provided with a discharge channel, which is connected with the groove 9 and is distributed in the horizontal direction.
[0011] Compared with the prior art, the utility model has the following advantages:
[0012] The deep drawing die of this structural form that can ensure the deep drawing quality has a simple structure, ingenious design and reasonable layout. Aiming at various problems existing in the working process of the traditional deep drawing die, a special structure is designed. It uses bolts to directly fasten the pressure plate to the support. Compared with the traditional method of using springs to provide clamping force, it can effectively prevent the pressure plate from being displaced when it is subjected to the reaction force of the workpiece, thereby ensuring the quality of the deep drawing operation and improving the qualified rate and product quality of the product. At the same time, it is also provided with at least one pair of stripping plates. The stripping plates can make a move to give way when the workpiece goes down, allowing the workpiece to pass smoothly. After the workpiece is out of contact, the stripping plates can automatically return to the initial position to prevent the workpiece from moving in the opposite direction. That is to say, the stripping plates can strip the workpiece from the deep drawing punch when the deep drawing punch drives the workpiece upward, thereby realizing the automatic stripping operation. In addition, the manufacturing process of this deep drawing die is simple and the manufacturing cost is low. Therefore, it can be said that it has many advantages and is particularly suitable for promotion and application in this field. Its market prospects are very broad. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a structural schematic diagram of an embodiment of the utility model (working state one).
[0014] Figure 2 It is a structural schematic diagram of an embodiment of the utility model (working state two).
[0015] Figure 3 It is a structural schematic diagram of an embodiment of the utility model (working state three). DETAILED DESCRIPTION
[0016] The specific implementation of the present invention will be described below in conjunction with the accompanying drawings: Figures 1 to 3As shown, a drawing die capable of ensuring drawing quality comprises an upper die base 1 and a lower die base 2, characterized in that: a drawing punch 3 is arranged on the bottom end surface of the upper die base 1, a support 4 is arranged on the top end surface of the lower die base 2, a drawing die 5 and a fixed pressing plate 6 are arranged in sequence above the support 4, a material groove 7 is provided on the bottom end surface of the fixed pressing plate 6, an inlet side of the material groove 7 is connected with a side surface of the fixed pressing plate 6, and the fixed pressing plate 6 is fixedly connected with the drawing die 5 by a plurality of bolts 8,
[0017] The support 4, the drawing die 5 and the fixed pressing plate 6 are all provided with a groove 9 matching the drawing punch 3.
[0018] At least one pair of stripping plates 10 is disposed on the top of the support 4. The stripping plates 10 are rotatably supported on the support 4 through a rotating shaft. A driving inclined surface 11 is disposed at one end of the stripping plate 10, and a counterweight portion 12 is disposed at the other end. The driving inclined surface 11 is located in the groove 9.
[0019] The support 4 is provided with a discharge channel, which is connected with the groove 9 and is distributed in the horizontal direction.
[0020] The working process of a drawing die that can ensure the drawing quality according to an embodiment of the utility model is as follows: when a drawing operation is required, first take a circular blank that has been cut into a suitable size in advance, insert it into the entrance of the material trough 7, and push it into the material trough 7 along the horizontal direction. At this time, the plate-like raw material is located in the material trough 7 between the fixed pressure plate 6 and the drawing die 5, and then start the forming machine, which drives the upper die base 1 and the drawing punch 3 to move downward as a whole. After the drawing punch 3 contacts the plate-like raw material, the plate-like raw material is deformed under the joint action of the punch and the groove 9 to form a shape similar to a barrel and is wrapped around the outside of the drawing punch 3.
[0021] When the drawing punch 3 drives the deformed raw material downward, the driving inclined surface 11 at the end of the stripper plate 10 is located in the groove 9, so the outer side of the raw material will collide with the driving inclined surface 11, and the stripper plate 10 will swing to make way. After the raw material smoothly moves to the bottom of the groove 9, the stripper plate 10 will swing in the opposite direction under the action of the counterweight part 12 and return to the initial state.
[0022] The drawing punch 3 moves upward again. Since the formed workpiece is covered outside the drawing punch 3, the workpiece moves upward with the drawing punch 3. When the top edge of the workpiece moves to the contact position with the bottom end surface of the stripping plate 10, the stripping plate 10 cannot swing in the opposite direction because the stretching die 5 is limited above the stripping plate 10. Therefore, under the action of the stripping plate 10, the workpiece is separated from the drawing punch 3, thereby realizing automatic stripping.
[0023] The workpiece separated from the drawing punch 3 falls to the bottom of the groove 9, and the workpiece is taken out from the discharge channel in the horizontal direction, thus completing a drawing operation.
Claims
1. A drawing die capable of ensuring drawing quality, comprising an upper die base (1) and a lower die base (2), characterized in that: A drawing punch (3) is arranged on the bottom end surface of the upper die base (1), a support (4) is arranged on the top end surface of the lower die base (2), a drawing die (5) and a fixed pressing plate (6) are arranged in sequence above the support (4), a material groove (7) is opened on the bottom end surface of the fixed pressing plate (6), an inlet side of the material groove (7) is connected to the side surface of the fixed pressing plate (6), and the fixed pressing plate (6) is fixedly connected to the drawing die (5) by a plurality of bolts (8). The support (4), the drawing die (5) and the fixed pressing plate (6) are all provided with a groove (9) matching the drawing punch (3). At least one pair of stripping plates (10) is disposed on the top of the support (4). The stripping plates (10) are rotatably supported on the support (4) via a rotating shaft. A driving inclined surface (11) is disposed at one end of the stripping plate (10) and a counterweight portion (12) is disposed at the other end. The driving inclined surface (11) is located in the groove (9). The support (4) is provided with a discharge channel, which is connected to the groove (9) and is distributed in the horizontal direction.