A shell stretch die

Abstract

The utility model relates to shell processing technical field discloses a kind of shell drawing die, including fixed die assembly and the stamping assembly located above fixed die assembly, fixed die assembly includes the base plate, base and upper die seat sequentially arranged from bottom to top, detachable connection between upper die seat and base, cylindrical demolding space is formed in the inside center position of base, demolding space is communicated with forming space, and demolding port is opened in the side of base, and the top of the remaining closed three sides of base is provided with positioning mechanism;Limiting step and limiting protruding are engaged, so as to fix upper die seat and base, especially for different size workpieces, the upper die seat can be adaptively quickly replaced, flexible operation and simple steps, seamless link between replacement and production, can effectively improve work efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of shell processing technology, specifically relating to a shell stretching mold. Background Technology

[0002] A mold is a set of molds and tools used in industrial production to obtain desired products through methods such as injection molding, blow molding, extrusion, die casting, forging, smelting, and stamping. In short, a mold is a tool used to create shaped objects. This tool is composed of various parts, and different molds are composed of different parts. It mainly achieves the shaping of the object by changing the physical state of the material being molded. A mold generally consists of two parts: a moving mold and a fixed mold (or a punch and a die). These two parts can be separated or joined together. When separated, the part is removed; when joined, the blank is injected into the mold cavity to form the shape.

[0003] When pressing shells of different sizes, it is often necessary to change the molds of different sizes accordingly. However, when changing the existing stamping molds, the stamping head and mold cannot be changed quickly, which wastes a lot of working time and cannot effectively guarantee work efficiency. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a shell stretching mold to solve the technical problem in the prior art that the mold cannot be quickly changed according to the workpiece size.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A shell stretching mold includes a fixed mold assembly and a stamping assembly located above the fixed mold assembly. The fixed mold assembly includes a base plate, a base, and an upper mold base arranged sequentially from bottom to top. The upper mold base and the base are detachably connected. A cylindrical demolding space is formed at the center of the base. A forming space is formed at the center of the upper mold base. The forming space includes an upper frustum section and a lower cylindrical section. The inner diameter of the frustum section gradually increases from bottom to top. The frustum section and the cylindrical section are connected. The demolding space and the forming space are connected. A demolding opening is opened on one side of the base. Positioning mechanisms are provided on the top of the other three closed sides of the base. The horizontal angle between adjacent positioning mechanisms is 90°. The positioning mechanism in the middle position is directly opposite the demolding opening.

[0007] Furthermore, the edge of the top surface of the base protrudes to form an annular limiting step, and the center of the bottom surface of the upper mold base protrudes to form an annular limiting protrusion. The limiting step and the limiting protrusion engage to fix the upper mold base and the base.

[0008] Furthermore, the demolding space extends vertically through the entire base, and the axis of the demolding space coincides with the axis of the base; the molding space extends vertically through the entire upper mold base, and the axis of the molding space coincides with the axis of the upper mold base.

[0009] Furthermore, a positioning step is provided at the top of the forming space. The sheet material is placed on the horizontal surface of the positioning step and is limited by the vertical surface of the positioning step to prevent the sheet material from sliding.

[0010] Furthermore, the positioning mechanism includes a positioning hole that penetrates the base horizontally, the axis of which intersects and is perpendicular to the axis of the demolding space. A positioning rod is slidably connected inside the positioning hole, the positioning rod is elastically connected to the base, and the inner end of the positioning rod extends into the demolding space and abuts against the outer wall of the housing.

[0011] Furthermore, a cylindrical fixing block is provided at the outer end of the positioning hole away from the demolding space. The diameter of the fixing block is the same as the inner diameter of the positioning hole. The fixing block is fixedly connected to the base. A connecting rod is provided at the center of the fixing block. The inner end of the connecting rod extends into the positioning rod and is threadedly connected to the positioning rod, thereby fixing the two. The outer end of the connecting rod is formed with an end head. The end head abuts against the fixing block to limit the sliding of the connecting rod. A spring is provided between the positioning rod and the fixing block. The spring is sleeved around the connecting rod. The inner end of the spring is fixed to the outer end face of the positioning rod, and the outer end of the spring is fixed to the inner end face of the fixing block.

[0012] Furthermore, the stamping assembly includes a punch, which is directly opposite the forming space.

[0013] The beneficial effects of this utility model are as follows:

[0014] (1) Compared with the prior art, the limiting step and the limiting protrusion engage to fix the upper mold base and the base. Especially for workpieces of different sizes, the upper mold base can be quickly replaced. The operation is flexible and the steps are simple. The replacement and production are seamlessly connected, which can effectively improve work efficiency.

[0015] (2) By setting a positioning mechanism, the formed shell enters the demolding space. The outer wall of the shell abuts against the positioning rods on the three sides, thereby clamping and positioning the shell. On the one hand, it prevents the shell from falling from the demolding port and causing injury to the surrounding workers. On the other hand, it keeps the shell in a stable state, making it easy for manual handling. Attached Figure Description

[0016] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the following drawings are provided for illustration:

[0017] Figure 1 This is a cross-sectional view of the shell stretching mold in Embodiment 1 of this utility model;

[0018] Figure 2 for Figure 1 Enlarged view of point A1 in the middle.

[0019] The following labels are shown in the attached diagram:

[0020] Stamping assembly 1, punch 11, fixed mold assembly 2, base plate 21, base 22, limiting step 221, demolding space 222, receiving platform 223, receiving plate 224, positioning hole 225, positioning rod 226, fixing block 227, connecting rod 228, spring 229, upper mold base 23, limiting protrusion 231, forming space 232. Detailed Implementation

[0021] Example 1, specifically as follows: Figures 1-2 As shown.

[0022] A shell stretching die includes a fixed die assembly 2 and a stamping assembly 1 located above the fixed die assembly 2. The stamping assembly 1 presses down to cooperate with the fixed die assembly 2 to press the sheet material into a shell-shaped workpiece.

[0023] like Figure 1 As shown, the fixed mold assembly 2 includes a base plate 21, a base 22, and an upper mold base 23 arranged sequentially from bottom to top, with the axes of the three coinciding. The diameter of the base plate 21 is larger than the outer diameter of the base 22, and the base 22 and base plate 21 are fixedly connected by screws. The outer diameter of the upper mold base 23 is larger than the outer diameter of the base 22, and the upper mold base 23 and base 22 are detachably connected.

[0024] Specifically, a ring-shaped limiting step 221 protrudes from the edge of the top surface of the base 22, and the axis of the ring-shaped limiting step 221 coincides with the axis of the base 22. A ring-shaped limiting protrusion 231 protrudes from the center of the bottom surface of the upper mold base 23, and the limiting step 221 engages with the limiting protrusion 231, thereby fixing the upper mold base 23 to the base 22. Especially for workpieces of different sizes, the upper mold base 23 can be quickly and adaptably replaced. The operation is flexible and the steps are simple, with seamless connection between replacement and production, which can effectively improve work efficiency.

[0025] A cylindrical demolding space 222 is formed at the center of the base 22, extending vertically through the entire base 22, with its axis coinciding with the axis of the base 22. A forming space 232 is formed at the center of the upper mold base 23, extending vertically through the entire upper mold base 23, with its axis coinciding with the axis of the upper mold base 23. The forming space 232 includes an upper frustum section and a lower cylindrical section. The inner diameter of the frustum section gradually increases from bottom to top, and the frustum section connects to the cylindrical section, meaning the inner diameter of the bottom surface of the frustum section is the same as the inner diameter of the cylindrical section. The demolding space 222 and the forming space 232 are connected. During the pressing and forming process, the sheet material enters the demolding space 222 from the forming space 232.

[0026] The top of the forming space 232 is provided with a positioning step. The sheet is placed on the horizontal surface of the positioning step and is limited by the vertical surface of the positioning step to prevent the sheet from sliding.

[0027] The stamping assembly 1 includes a punch 11, which faces the forming space 232. During the pressing process, the punch 11 presses the sheet material against the side wall of the forming space 232 and causes plastic deformation.

[0028] A receiving mechanism is provided at the center of the bottom of the demolding space 222. The receiving mechanism includes a receiving platform 223 and a receiving plate 224 fixedly connected to the top surface of the receiving platform 223. In this embodiment, the bottom surface of the receiving platform 223 is fixedly connected to the base plate 21. The receiving platform 223 adopts a telescopic structure, such as hydraulic lifting, so that the height position of the receiving platform 223 can be adjusted to adapt to shells of different sizes.

[0029] A demolding opening (not shown in the figure) is provided on one side of the base 22. The pressed shell falls onto the receiving plate 224 and is removed through the demolding opening. Positioning mechanisms are provided on the top of the other three enclosed sides of the base 22, with a horizontal angle of 90° between adjacent positioning mechanisms. In this embodiment, the positioning mechanism in the middle position is directly opposite the demolding opening.

[0030] The positioning mechanism includes a positioning hole 225 extending horizontally through the base 22. The axis of the positioning hole 225 intersects and is perpendicular to the axis of the demolding space 222. A positioning rod 226 is slidably connected within the positioning hole 225. The positioning rod 226 is elastically connected to the base 22, and its inner end extends into the demolding space 222 and abuts against the outer wall of the housing. Specifically, a cylindrical fixing block 227 is provided at the outer end of the positioning hole 225 away from the demolding space 222. The diameter of the fixing block 227 is the same as the inner diameter of the positioning hole 225, and the fixing block 227 is welded to the base 22. A connecting rod 228 is inserted through the center of the fixing block 227. The inner end of the connecting rod 228 extends into the positioning rod 226 and is threadedly connected to the positioning rod 226, thereby fixing the two. The outer end of the connecting rod 228 forms a head, which abuts against the fixing block 227 to limit the sliding of the connecting rod 228. A spring 229 is provided between the positioning rod 226 and the fixing block 227. The spring 229 is sleeved around the connecting rod 228. The inner end of the spring 229 is welded and fixed to the outer end face of the positioning rod 226, and the outer end of the spring 229 is welded and fixed to the inner end face of the fixing block 227.

[0031] By setting a positioning mechanism, the formed shell enters the demolding space 222. The outer wall of the shell abuts against the positioning rods 226 on the three sides, thereby clamping and positioning the shell. On the one hand, it prevents the shell from falling from the demolding port and causing injury to the surrounding workers. On the other hand, it keeps the shell in a stable state, making it easy for manual handling.

[0032] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. A shell stretching die, characterized in that, The device includes a fixed mold assembly and a stamping assembly located above the fixed mold assembly. The fixed mold assembly includes a base plate, a base, and an upper mold base arranged sequentially from bottom to top. The upper mold base and the base are detachably connected. A cylindrical demolding space is formed at the center of the base. A forming space is formed at the center of the upper mold base. The forming space includes an upper frustum section and a lower cylindrical section. The inner diameter of the frustum section gradually increases from bottom to top. The frustum section and the cylindrical section are connected. The demolding space and the forming space are connected. A demolding opening is opened on one side of the base. Positioning mechanisms are provided on the top of the other three closed sides of the base. The horizontal angle between adjacent positioning mechanisms is 90°. The positioning mechanism in the middle position is directly opposite the demolding opening.

2. The shell stretching die according to claim 1, characterized in that, The top edge of the base protrudes to form an annular limiting step, and the center of the bottom surface of the upper mold base protrudes to form an annular limiting protrusion. The limiting step and the limiting protrusion engage to fix the upper mold base and the base.

3. The shell stretching die according to claim 2, characterized in that, The demolding space runs vertically through the entire base, and the axis of the demolding space coincides with the axis of the base. The molding space runs vertically through the entire upper mold base, and the axis of the molding space coincides with the axis of the upper mold base.

4. The shell stretching die according to claim 3, characterized in that, The top of the forming space is provided with a positioning step. The sheet is placed on the horizontal surface of the positioning step and is limited by the vertical surface of the positioning step to prevent the sheet from sliding.

5. The shell stretching die according to claim 4, characterized in that, The positioning mechanism includes a positioning hole that runs horizontally through the base, the axis of which intersects and is perpendicular to the axis of the demolding space; a positioning rod is slidably connected inside the positioning hole, the positioning rod is elastically connected to the base, and the inner end of the positioning rod extends into the demolding space and abuts against the outer wall of the shell.

6. The shell stretching die according to claim 5, characterized in that, A cylindrical fixing block is provided at the outer end of the positioning hole away from the demolding space. The diameter of the fixing block is the same as the inner diameter of the positioning hole. The fixing block is fixedly connected to the base. A connecting rod is inserted through the center of the fixing block. The inner end of the connecting rod extends into the positioning rod and is threadedly connected to the positioning rod, thereby fixing the two. The outer end of the connecting rod forms an end head, which abuts against the fixing block to limit the sliding of the connecting rod. A spring is provided between the positioning rod and the fixing block. The spring is sleeved around the connecting rod. The inner end of the spring is fixed to the outer end face of the positioning rod, and the outer end of the spring is fixed to the inner end face of the fixing block.

7. The shell stretching die according to claim 6, characterized in that, The stamping assembly includes a punch, which is directly opposite the forming space.

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