Necking die for machining stainless steel sealing cover

Abstract

The utility model discloses a necking die for stainless steel sealing cover processing, which relates to the technical field of stainless steel sealing cover processing and comprises a base component and a movable die, a fixed die is vertically mounted in the middle of the base component, and limiting components are arranged on the left side and the right side of the fixed die. A lubricating assembly is arranged on the side, away from the fixed die, of the limiting assembly, a stabilizing frame is erected above the base assembly, and the movable die is installed at the output end of the bottom of the stamping oil cylinder. According to the necking die for machining the stainless steel sealing cover, the inner chamfer and the outer chamfer are arranged on the edges of the bottom surfaces of the outer die and the inner die correspondingly, so that under driving of a stamping oil cylinder, when the whole movable die and a stainless steel sealing cover workpiece are in vertical butt joint, the inner chamfer and the outer chamfer are separated from each other; in addition, the lubricating assembly provides auxiliary lubrication for contact between the movable mold and the workpiece so as to guarantee the in-out process of the workpiece in the movable mold, and excessive friction is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of stainless steel sealing cover processing, in particular to a shrinking die used for stainless steel sealing cover processing. Background Art

[0002] Stainless steel sealing covers are common parts used in many equipment structures. Shrinking dies are often used in their production and processing. Shrinking dies are a type of punching die that reduces the radial size of the end of a hollow blank or tubular blank. The principle is that when metal is under pressure, it will flow and deform to a certain extent. Through the design of the shrinking die, a specific shape of shrinkage can be achieved on metal tubular materials or metal sheets, and it can be used to make various mechanical parts, automotive parts, electronic components, etc.

[0003] The opening structure of a conventional shrinking mold is relatively flat and sharp, which makes it easy for docking and jamming problems to occur when one end of the blank enters the internal cavity structure. This puts both the mold itself and the blank at risk of damage, which not only increases production costs but also affects operating efficiency.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a shrinking mold for processing a stainless steel sealing cover is proposed. Utility Model Content

[0005] The utility model aims to provide a shrinking die for processing a stainless steel sealing cover to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a shrinking mold for processing a stainless steel sealing cover, comprising a base assembly and a movable mold, a fixed mold is vertically installed in the middle of the base assembly, and limit assemblies are arranged on the left and right sides of the fixed mold, and a lubrication assembly is arranged on the side of the limit assembly away from the fixed mold, a stabilizing frame is arranged above the base assembly, and a stamping cylinder is vertically installed in the middle of the stabilizing frame, the movable mold is installed at the bottom output end of the stamping cylinder, the movable mold comprises an outer mold, an inner chamfer, an inner mold and an outer chamfer, the bottom inner diameter edge of the outer mold is provided with an inner chamfer, and an inner mold is arranged in the inner center of the outer mold, and the bottom edge of the inner mold is provided with an outer chamfer.

[0007] Furthermore, the base assembly includes a base, a pressure-bearing seat and a support frame. The pressure-bearing seat is laterally installed in the center of the base, and the support frames are installed on both sides of the left and right sides of the pressure-bearing seat.

[0008] Furthermore, the limiting assembly includes a pneumatic push rod, a connecting frame, a limiting arc plate and connecting bolts, the output end of the pneumatic push rod is connected to the connecting frame, and the side of the connecting frame away from the pneumatic push rod is connected to the limiting arc plate, and a connecting bolt is threadedly connected between the limiting arc plate and the connecting frame.

[0009] Furthermore, the connecting frame is movably connected to the limiting arc plate, and the connecting frame has the mobility of horizontal movement through the drive of the pneumatic push rod.

[0010] Furthermore, the lubrication assembly includes a liquid storage tank, a centrifugal pump and a nozzle. The top of the liquid storage tank is provided with a centrifugal pump, and one side of the centrifugal pump is connected to the nozzle through a pipeline.

[0011] Furthermore, the nozzle is arranged on a side facing the fixed mold, and the liquid storage tank is fixedly installed on the top of the support frame.

[0012] Furthermore, the fixed die, the stamping cylinder and the movable die are all located on a unified vertical central axis, and the fixed die is arranged directly below the movable die.

[0013] Furthermore, the outer mold and the inner mold are an integrated structure, and the inner upper end of the outer mold and the upper end surface of the inner mold are both arranged with a smooth structure.

[0014] The utility model provides a shrinking die for processing a stainless steel sealing cover, which has the following beneficial effects:

[0015] 1. The utility model adopts a rounded inner surface structure of the outer mold and an outer surface structure of the inner mold, and at the same time, inner chamfers are respectively arranged on the inner diameter edges of the bottom opening of the outer mold, and the outer chamfer structure of the bottom edge of the inner mold is arranged, so that the upper end of the blank of the stainless steel sealing cover enters the interior of the movable mold from bottom to top in the vertical direction, which can avoid structural collisions to the greatest extent and cause problems in the processing process, so that the workpiece itself is damaged and the cost is wasted. In addition, the above structure also makes the process of the blank entering the interior of the movable mold smooth, reduces the jamming when the structure is docked, and reduces unnecessary loss of the blank.

[0016] 2. The utility model is provided with a lubrication component. After the blank is set in the fixed mold, the centrifugal pump will use the nozzle to spray the lubricating liquid stored in the liquid storage tank onto the upper end surface of the blank in a quantitative manner. By using the above structure, the upper end of the blank is processed. When the surface of the cavity inside the movable mold is in structural contact, sufficient structural lubrication can be guaranteed, and when the upper end of the blank is subjected to shrinkage processing due to stamping processing, the movable mold and the blank are connected and separated from each other. The overall structure will not be stuck due to high structural friction, which reduces the impact on the molding effect of the shrinkage processing and avoids the movable mold and the blank being stuck to each other when they are separated, resulting in failure to demold normally.

[0017] 3. The utility model symmetrically installs the limit components on the left and right sides of the fixed mold. When the stainless steel sealing cover blank is sleeved on the surface of the fixed mold, the pneumatic push rod will push the fixed limit arc plate connected with the output end connecting frame horizontally toward the side of the blank, thereby forming a left and right limit clamping structural effect. The use of the above structure can ensure to the greatest extent that the blank will not have structural shaking during the processing and avoid the problem of structural detachment of the blank from the surface of the fixed mold, which will cause damage to the device structure and the batch structure itself during processing, thereby ensuring the structural stability of the entire processing process. In addition, since the connecting frame and the limit arc plate are connected and fixed to each other by connecting bolts, the limit arc plate can be appropriately replaced and adjusted according to the needs of use and the outer surface structure and size of the processed blank, thereby achieving the best processing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the main body of a shrinking mold for processing a stainless steel sealing cover according to the utility model;

[0019] Figure 2 This is a three-dimensional structural schematic diagram of a base assembly of a shrinking mold for processing a stainless steel sealing cover according to the utility model;

[0020] Figure 3 This is a three-dimensional structural schematic diagram of a limiting component of a shrinking mold for processing a stainless steel sealing cover according to the utility model;

[0021] Figure 4 This is a schematic diagram of the three-dimensional structure of a lubrication component of a shrinking die for processing a stainless steel sealing cover according to the utility model;

[0022] Figure 5 The utility model is a schematic diagram of a sectional three-dimensional structure of a movable mold of a shrinking mold used for processing a stainless steel sealing cover.

[0023] In the figure: 1. Base assembly; 101. Base; 102. Pressure seat; 103. Support frame; 2. Fixed mold; 3. Limiting assembly; 301. Pneumatic push rod; 302. Connecting frame; 303. Limiting arc plate; 304. Connecting bolt; 4. Lubrication assembly; 401. Liquid storage tank; 402. Centrifugal pump; 403. Nozzle; 5. Stabilizing frame; 6. Stamping cylinder; 7. Moving mold; 701. External mold; 702. Internal chamfer; 703. Internal mold; 704. External chamfer. DETAILED DESCRIPTION

[0024] The following is a further detailed description of the implementation of the present utility model in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0025] like Figures 1 to 5 As shown, a shrinking die for processing a stainless steel sealing cover comprises a base assembly 1 and a movable die 7, a fixed die 2 is vertically installed in the middle of the base assembly 1, and limit assemblies 3 are arranged on both sides of the fixed die 2, and a lubrication assembly 4 is arranged on the side of the limit assembly 3 away from the fixed die 2, a stabilizing frame 5 is arranged above the base assembly 1, and a stamping cylinder 6 is vertically installed in the middle of the stabilizing frame 5, and the movable die 7 is installed at the bottom output end of the stamping cylinder 6, and the movable die 7 comprises an outer die 701, an inner chamfer 702, an inner die 703 and an outer chamfer 704, the inner diameter edge of the bottom of the outer die 701 is provided with an inner chamfer 702, and the inner die 703 is arranged in the center of the inner part of the outer die 701 , and the bottom edge of the inner mold 703 is provided with an outer chamfer 704, the outer mold 701 and the inner mold 703 are an integrated structure, and the inner upper end of the outer mold 701 and the upper end surface of the inner mold 703 are both arranged with a smooth structure. By making the inner surface structure of the outer mold 701 and the outer surface structure of the inner mold 703 both adopt a smooth setting, and at the same time, inner chamfers 702 are respectively arranged on the inner diameter edge of the bottom opening of the outer mold 701, and the outer chamfer 704 structure of the bottom edge of the inner mold 703 is matched, the upper end of the blank of the stainless steel sealing cover enters the interior of the movable mold 7 from bottom to top in the vertical direction, which can avoid structural collisions and problems in the processing process to the greatest extent.

[0026] like Figures 1 to 5As shown, the base assembly 1 includes a base 101, a pressure-bearing seat 102 and a support frame 103. The pressure-bearing seat 102 is horizontally installed in the center of the base 101, and the support frames 103 are installed on the left and right sides of the pressure-bearing seat 102. The limiting assembly 3 includes a pneumatic push rod 301, a connecting frame 302, a limiting arc plate 303 and a connecting bolt 304. The output end of the pneumatic push rod 301 is connected to the connecting frame 302, and the side of the connecting frame 302 away from the pneumatic push rod 301 is connected to the limiting arc plate 303, and the limiting arc plate 303 and the connecting frame 304 are connected. 02 are threadedly connected with a connecting bolt 304, the connecting frame 302 and the limiting arc plate 303 are movably connected, and the connecting frame 302 has the activity of horizontal movement through the drive of the pneumatic push rod 301, and the limiting components 3 are symmetrically installed on the left and right sides of the fixed mold 2. When the stainless steel sealing cover blank is sleeved on the surface of the fixed mold 2, the pneumatic push rod 301 will push the fixed limiting arc plate 303 connected to the output end connecting frame 302 horizontally toward the side of the blank, thereby forming a left and right limiting clamping structural effect.

[0027] like Figures 1 to 5 As shown, the lubrication assembly 4 includes a liquid storage tank 401, a centrifugal pump 402 and a nozzle 403. The top of the liquid storage tank 401 is provided with a centrifugal pump 402, and one side of the centrifugal pump 402 is connected to the nozzle 403 through a pipeline, and the nozzle 403 is arranged toward one side of the fixed mold 2. The liquid storage tank 401 is fixedly installed on the top of the support frame 103, the fixed mold 2, the stamping cylinder 6 and the movable mold 7 are all on the same vertical central axis, and the fixed mold 2 is arranged directly below the movable mold 7. After the blank is put into the fixed mold 2, the centrifugal pump 402 will use the nozzle 403 to spray the lubricating liquid stored in the liquid storage tank 401 on the upper end surface of the blank in a quantitative manner, so that when the upper end of the blank is processed and the cavity surface inside the movable mold 7 is in structural contact, sufficient structural lubrication can be guaranteed to avoid structural jamming due to high structural friction during stamping processing.

[0028] In summary, if Figures 1 to 5 As shown, the shrinking mold for processing stainless steel sealing covers, when in use, firstly, the stainless steel sealing cover blank to be processed is placed with the end to be shrinked facing vertically upward, and is sleeved on the upper end surface of the fixed mold 2 in the middle of the pressure-bearing seat 102 from top to bottom in the vertical direction. At the same time, the limiting components 3 on the left and right sides of the fixed mold 2 will operate simultaneously. Under the structural extension of the pneumatic push rod 301, the connecting frame 302 at its output end and the limiting arc plate 303 fixed to the structure with the connecting bolt 304 will be pushed horizontally until the limiting arc plate 303 is tightly against the side of the blank, thereby structurally limiting and fixing the blank to ensure the structural stability during processing;

[0029] Then, the lubrication assembly 4 fixed by the support frames 103 on the left and right sides of the base 101 starts to operate synchronously. Under the operation of the centrifugal pump 402, the lubricating liquid pre-injected into the liquid storage tank 401 is quantitatively sprayed on the upper surface of the blank by the nozzle 403;

[0030] Then, the stamping cylinder 6 located at the center of the upper end of the stabilizing frame 5 is started. Driven by the stamping cylinder 6, the movable mold 7 connected to its bottom will move rapidly and vertically downward until the upper end of the blank is vertically inserted into the cavity structure formed between the outer mold 701 and the inner mold 703. By utilizing the cavity with its shrinking structure and the huge force provided by the stamping cylinder 6, the upper end of the blank is structurally deformed to form the desired modeling structure.

[0031] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A shrinking mold for processing a stainless steel sealing cover, comprising a base assembly (1) and a movable mold (7), characterized in that: A fixed die (2) is vertically mounted in the middle of the base assembly (1), and limit assemblies (3) are arranged on both left and right sides of the fixed die (2), and a lubrication assembly (4) is arranged on the side of the limit assemblies (3) away from the fixed die (2). A stabilizing frame (5) is mounted above the base assembly (1), and a punching cylinder (6) is vertically mounted in the middle of the stabilizing frame (5). The movable die (7) is mounted at the bottom output end of the punching cylinder (6). The movable die (7) comprises an outer die (701), an inner chamfer (702), an inner die (703) and an outer chamfer (704). The inner diameter edge of the bottom of the outer die (701) is provided with an inner chamfer (702), and the inner die (703) is arranged in the center of the inner portion of the outer die (701), and the outer chamfer (704) is arranged at the bottom edge of the inner die (703).

2. The shrinking mold for stainless steel sealing cover processing according to claim 1, characterized in that: The base assembly (1) comprises a base (101), a pressure-bearing seat (102) and a support frame (103); the pressure-bearing seat (102) is laterally mounted in the center of the base (101), and the support frames (103) are mounted on both left and right sides of the pressure-bearing seat (102).

3. The shrinking mold for processing a stainless steel sealing cover according to claim 1, characterized in that: The limiting assembly (3) comprises a pneumatic push rod (301), a connecting frame (302), a limiting arc plate (303) and a connecting bolt (304); the output end of the pneumatic push rod (301) is connected to the connecting frame (302), and the side of the connecting frame (302) away from the pneumatic push rod (301) is connected to the limiting arc plate (303), and the connecting bolt (304) is threadedly connected between the limiting arc plate (303) and the connecting frame (302).

4. The shrinking mold for processing a stainless steel sealing cover according to claim 3, characterized in that: The connecting frame (302) and the limiting arc plate (303) are movably connected, and the connecting frame (302) has the mobility of horizontal movement through the drive of the pneumatic push rod (301).

5. The shrinking mold for processing a stainless steel sealing cover according to claim 2, characterized in that: The lubrication assembly (4) comprises a liquid storage tank (401), a centrifugal pump (402) and a nozzle (403); the centrifugal pump (402) is arranged on the top of the liquid storage tank (401), and one side of the centrifugal pump (402) is connected to the nozzle (403) via a pipeline.

6. The shrinking mold for processing a stainless steel sealing cover according to claim 5, characterized in that: The nozzle (403) is arranged toward one side of the fixed mold (2), and the liquid storage tank (401) is fixedly installed on the top of the support frame (103).

7. The shrinking mold for processing a stainless steel sealing cover according to claim 1, characterized in that: The fixed die (2), the punching cylinder (6) and the movable die (7) are all located on a common vertical central axis, and the fixed die (2) is arranged directly below the movable die (7).

8. The shrinking mold for processing a stainless steel sealing cover according to claim 1, characterized in that: The outer mold (701) and the inner mold (703) are an integrated structure, and the inner upper end of the outer mold (701) and the upper end surface of the inner mold (703) are both arranged with a smooth structure.

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