Integral piercing die

Abstract

The utility model discloses a whole punching die, including driving part, base and plane punch slider, unloading force block and punch punch slider, it is all arranged as linear movement along the base, the plane punch slider is fixedly connected with plane punch to the center of the part of processing of orientation, the punch punch slider is provided with punch punch to the center of the part of processing of orientation, the driving part includes the plane punch drive block, unloading force push and punch punch drive block that fixedly set in base right top in proper order, the plane punch drive block drives unloading force block linear movement to push plane punch slider and drive plane punch linear movement to punch the part of processing, the punch punch drive block drives punch punch slider linear movement to push punch punch linear movement to punch the part of processing. The utility model can realize that the welding plane of the round hole and the hole periphery is punched out once, realizes efficient high quality construction, and the coaxality is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of punching mold technology. More specifically, this utility model relates to an integral punching mold. Background Technology

[0002] The lower casing of the compressor typically has a welding plane perpendicular to the axis of the hole around the copper tubes it welds to. This plane has high requirements for flatness and coaxiality, generally requiring a coaxiality of 0.01mm and a flatness of 0.07. Current processes use a two-step stamping method to process the hole and the welding plane: first, a round hole is punched, then the welding plane is punched. However, this method has two problems: first, the roundness and inner diameter of the hole are unstable because punching the hole and then the welding plane results in a reduction in hole diameter. This reduction is affected by fluctuations in material thickness, leading to dimensional instability and potential coaxiality deviations; second, the two-step stamping process is inefficient, time-consuming, and detrimental to efficient construction. Utility Model Content

[0003] One objective of this invention is to provide an integral punching mold that can punch out the round hole and the welding surface around the hole in one go, achieving efficient and high-quality construction while ensuring coaxiality.

[0004] To solve the above-mentioned technical problems, this utility model provides an integral punching mold, including a driving component, a base, and a flat punch slider, a stress relief block, and a punching punch slider disposed on the base. The flat punch slider, stress relief block, and punching punch slider are configured to move linearly along the base. A flat punch is fixedly connected to the flat punch slider facing the center of the part to be processed. The flat punch slider has a hollow structure inside, which accommodates the punching punch slider. A punching punch is disposed on the punching punch slider facing the center of the part to be processed, passing through the flat punch slider and then along the interior of the flat punch. The central axes of the flat punch and the punching punch coincide. The driving component includes a flat punch drive that is sequentially fixedly disposed above the base. The planar punch drive block, the unloading push block, and the punching head drive block are driven together by a drive mechanism to move vertically in a straight line. The planar punch drive block drives the unloading block downward to move linearly, thereby pushing the planar punch slider to move linearly and press the planar punch to the workpiece. The punching head drive block drives the punching head slider downward to move linearly and press the punching head to the workpiece. The base has a through channel corresponding to the position of the unloading block. The unloading block is supported by a nitrogen spring under the base. The unloading push block drives the unloading block downward to compress the nitrogen spring and descend to relieve the punching pressure of the planar punch. The planar punch drive block, the unloading push block, and the punching head drive block drive the planar punch slider, the unloading block, and the punching head slider in sequence.

[0005] Preferably, the planar punch drive block and the unloading block, as well as the punching punch drive block and the punching punch slider, all achieve vertical motion driving linear movement by cooperating with each other through the setting of wedge surfaces.

[0006] Preferably, the lower end of the unloading push block is provided with a downwardly protruding unloading strip, which is used to contact the unloading block and transmit force.

[0007] Preferably, the base is provided with a linear guide rail, and the stress relief block and the punching head slider are both mounted on the linear guide rail and move on it; the punching head slider slides closely against the side wall of the planar punching head slider to achieve linear movement only along the planar punching head slider.

[0008] Preferably, the base is also provided with a wear-resistant limiting plate, which is used to closely fit the planar punch drive block.

[0009] This utility model has at least the following beneficial effects: 1. This utility model uses an integral punching mold to process the welding plane and round hole, which can realize the round hole and the welding plane around the hole being punched out at one time. The principle is to install the punching punch and the plane punch together, so that the construction of the entire structure can be completed in one punching, achieving efficient construction and ensuring coaxiality. The pass rate of the stamped products can basically reach 100%.

[0010] 2. The planar punch of this utility model improves the structure by using a nitrogen spring to apply pressure. When punching is required, a push rod can be used to unload the thrust of the nitrogen spring, so as to achieve smooth punching without being interfered with by the planar punch.

[0011] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the part to be processed according to this utility model; Figure 2 This is an enlarged view of the punching structure of this utility model; Figure 3 This is a schematic diagram of the overall structure of this utility model; Figure 4 This is a top view of the present invention; Figure 5 This is a schematic diagram of the internal structure of this utility model.

[0013] Explanation of reference numerals in the attached figures: 1. Welding plane, 2. Round hole, 3. Part to be processed, 4. Base, 5. Nitrogen spring, 6. Flat punch slider, 7. Unloading block, 8. Punching punch slider, 9. Flat punch, 10. Punching punch, 11. Flat punch drive block, 12. Unloading push block, 13. Punching punch drive block, 14. Linear guide rail, 15. Wear-resistant limit plate. Detailed Implementation

[0014] To better understand the purpose, structure, and function of this utility model, the following detailed description is provided in conjunction with the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0015] It should be noted that in the description of this utility model, the terms "horizontal", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0016] The part 3 to be processed in this application is the compressor lower housing mentioned in the background art of this application, and its structure is as follows: Figure 1 As shown, the structure of the welding plane 1 and the circular hole 2 to be stamped is as follows: Figure 2 As shown.

[0017] like Figures 1 to 5As shown, this utility model provides an integral punching mold, including a driving component, a base 4, and a flat punch slider 6, a stress relief block 7, and a punching punch slider 8 disposed on the base. The flat punch slider 6, stress relief block 7, and punching punch slider 8 are configured to move linearly along the base. A flat punch 9 is fixedly connected to the center of the part to be processed on the flat punch slider. The interior of the flat punch slider is a hollow structure that accommodates the punching punch slider. A punching punch 10 is disposed on the punching punch slider facing the center of the part to be processed, passing through the flat punch slider and then along the interior of the flat punch. The central axes of the flat punch and the punching punch coincide. The driving component includes a flat punch driving block 11, a stress relief block 12, a stress relief block 13, a stress relief block 14, and a punching punch slider 15, which are sequentially fixedly disposed above the base. The force-pushing block 12 and the punching punch drive block 13 are driven together by a drive mechanism to move vertically in a straight line. The flat punch drive block drives the unloading block downwards to move linearly, thereby pushing the flat punch slider to move the flat punch linearly to punch the workpiece. The punching punch drive block drives the punching punch slider downwards to move linearly to push the punching punch linearly to punch the workpiece. The position of the unloading block on the base is a through channel. The unloading block is supported by a nitrogen spring 5 under the base. The unloading push block drives the unloading block downwards to compress the nitrogen spring and descend to relieve the punching pressure of the flat punch. The flat punch drive block, the unloading push block, and the punching punch drive block drive the flat punch slider, the unloading block, and the punching punch slider in sequence. The flat punch drive block and the unloading block, as well as the punching punch drive block and the punching punch slider, are all driven vertically in a straight line by wedge-shaped surfaces.

[0018] Both the planar punch and the punching punch in this application are cylindrical structures. The planar punch is fitted over the punching punch. The planar punch is used to punch a welding surface at the corresponding position of the lower housing, and the punching punch is used to punch a round hole at the corresponding position of the lower housing. By fitting the punching punch and the planar punch together, the round hole and the welding surface around the hole can be punched out in one go, and the coaxiality and accuracy are guaranteed. The height of the planar punch drive block, the unloading push block, and the punching punch drive block are designed, with the planar punch drive block being the longest. When the corresponding drive component is driven downward by the drive mechanism on the stamping press, the planar punch drive block contacts the unloading block first. At this time, the unloading block is stably supported by a nitrogen spring. The inclined surface of the unloading block cooperates with the inclined surface of the planar punch drive block, so that the downward movement of the planar punch drive block pushes the unloading block to move linearly towards the lower housing side, thereby pushing the planar punch slider to move the planar punch and punch the lower housing to form the welding surface. After the welding plane is stamped, the pressure relief pusher continues to contact the pressure relief block downwards, pushing it downwards to compress the nitrogen spring. Simultaneously, it retracts on the horizontal plane, releasing the punching force of the flat punch. Continuing downwards, the inclined surface of the punching punch drive block engages with the inclined surface of the punching punch slider, allowing the downward movement of the punching punch drive block to push the punching punch slider, which in turn drives the punching punch to move linearly, stamping the lower housing to form a punched circular hole. Through structural changes, the flat punch uses a nitrogen spring to apply pressure. When a circular hole needs to be punched, a pressure relief pusher can unload the thrust of the nitrogen spring, achieving smooth punching without interference from the flat punch.

[0019] The lower end of the unloading push block is provided with a downward protruding unloading strip, which is used to contact the unloading block and transmit force, so as to achieve a more reasonable structural design and prevent the components from interfering with each other.

[0020] The base is provided with a linear guide rail 14, and the stress relief block and the punching head slider are both mounted on the linear guide rail and move on it. The punching head slider slides closely against the side wall of the planar punching head slider to achieve linear movement only along the planar punching head slider.

[0021] The base is also provided with a wear-resistant limiting plate 15, which is used to closely fit the flat punch drive block.

[0022] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model, and other modifications can be easily made by those skilled in the art. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and examples shown and described herein.

Claims

1. An integral punching mold, characterized in that, The system includes a drive unit, a base, and a flat punch slider, a pressure relief block, and a punching punch slider mounted on the base. The flat punch slider, pressure relief block, and punching punch slider are configured to move linearly along the base. A flat punch is fixedly connected to the flat punch slider facing the center of the workpiece. The flat punch slider has a hollow interior that houses the punching punch slider. A punching punch is positioned on the punching punch slider facing the center of the workpiece, passing through the flat punch slider and then along the interior of the flat punch. The central axes of the flat punch and the punching punch coincide. The drive unit includes a flat punch drive block, a pressure relief push block, and a punching punch drive block, which are sequentially fixed above the base. The device is driven by a drive mechanism to move in a common vertical linear motion. The planar punch drive block drives the unloading block to move linearly downward, thereby pushing the planar punch slider to move the planar punch linearly to press the workpiece. The punching punch drive block drives the punching punch slider to move linearly downward to push the punching punch linearly to press the workpiece. The position of the unloading block on the base is a through channel. The unloading block is supported by a nitrogen spring under the base. The unloading push block drives the unloading block downward to compress the nitrogen spring and descend to release the punching pressure of the planar punch. The planar punch drive block, unloading push block and punching punch drive block drive the planar punch slider, unloading block and punching punch slider to move in sequence.

2. The integral punching mold as described in claim 1, characterized in that, The planar punch drive block and unloading block, as well as the punching punch drive block and punching punch slider, all cooperate with each other by setting wedge surfaces to achieve vertical motion driving linear movement.

3. The integral punching mold as described in claim 1, characterized in that, The lower end of the unloading push block is provided with a downward protruding unloading strip, which is used to contact the unloading block and transmit force.

4. The integral punching mold as described in claim 1, characterized in that, The base is provided with a linear guide rail, and the stress relief block and the punching head slider are both mounted on the linear guide rail and move on it. The punching head slider slides closely against the side wall of the planar punching head slider to achieve linear movement only along the planar punching head slider.

5. The integral punching mold as described in claim 1, characterized in that, The base is also provided with a wear-resistant limiting plate, which is used to closely fit the flat punch drive block.

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