A die cutting device for outside water cutting

Abstract

The utility model belongs to outer water cutting processing device technical field provides a kind of for outer water cutting punching device, it include: support seat;Buffer pad, it is set on support seat, buffer pad and at least the contact of surplus material part of outer water cutting placed on support seat;Cutter, it is movably set in the upper of support seat.Compared with prior art, the utility model is set on support seat by buffer pad, and make the projection of cutter blade mouth accurate cover surplus material and the connecting area of main part, utilize the elastic deformation of buffer pad to generate reverse supporting force when punching out.This bidirectional force helps to form concentrated shear stress in connecting area, promotes material fracture, realizes clean, thorough cutting, effectively avoids surplus material and main body adhesion;At the same time, buffer pad absorbs part of impact energy, significantly relieves the rigid collision between cutter and support structure, thereby prolongs the service life of cutter.

Description

Technical Field

[0001] This utility model belongs to the technical field of external waterjet cutting processing devices, specifically relating to a punching device for external waterjet cutting. Background Technology

[0002] In the production process of external water-cutting (usually referring to rubber sealing components such as automotive door and window sealing strips), the punching process is a key step in removing excess material and completing the final contour shaping of the product (such as rounded corners). In the prior art, the device used for external water-cutting punching typically includes a cutter and a support part arranged opposite to it. The support part is mostly made of rigid materials such as metal to provide sufficient reaction force to cooperate with the cutter to complete the cutting action.

[0003] However, this rigid support structure has obvious drawbacks in practical applications. First, since the external waterjet cutter is usually made of soft and elastic rubber or thermoplastic elastomer (TPE) materials, if the support is made of rigid material during the punching process, the cutter will make a "hard-on-hard" contact with the support as it moves downward. This can easily cause the cutting edge to roll, chip, or even break due to impact stress concentration, significantly shortening the tool life. It can also cause the external waterjet cutter body to tear or deform due to excessive local stress, affecting the product's appearance and dimensional accuracy.

[0004] Secondly, rigid supports cannot effectively absorb and buffer the instantaneous impact force during the punching process, making it difficult for the rubber outer water-cutting cutter to achieve a clean and crisp separation when cut. Especially when the connection area between the residual material and the main body is narrow or the material has high resilience, the residual material often fails to be completely cut off and adheres to the outer water-cutting cutter body. Such incompletely separated residual material not only affects the product assembly performance but also requires subsequent manual trimming or secondary shearing processes, increasing labor costs and reducing overall production efficiency and automation levels.

[0005] Therefore, there is an urgent need for a new type of external water-cooled punching device that can protect the cutter, improve the punching quality, and achieve automatic separation of waste material, so as to overcome a series of problems caused by rigid support in the existing technology. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide a punching device for external water cutting, in view of the current state of the prior art.

[0007] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a punching device for external water cutting is proposed, comprising: a support base, which is used to provide support for the external water cutting;

[0008] A buffer pad is disposed on the support base, and the buffer pad is in contact with at least the excess material portion of the outer water cutter placed on the support base;

[0009] A cutter is movably disposed above the support base, and the projection of the cutting edge of the cutter on the buffer pad covers the connection area between the remaining material portion and the remaining portion of the external water cutter.

[0010] When the cutter contacts the external water cutter and applies a cutting force, it pushes the remaining material to move along the cutting direction toward the buffer pad and forces the buffer pad to undergo elastic deformation, providing a bidirectional force for the external water cutter.

[0011] In the aforementioned punching device for external water cutting, the elastic deformation capacity of the buffer pad is greater than that of the external water cutter, so as to apply an elastic support force opposite to the punching direction to the remaining material during the punching process, causing the connection area to break.

[0012] In the aforementioned punching device for external water cutting, the buffer pad is made of polyurethane material.

[0013] In one of the above-mentioned punching devices for external water cutting, a portion of the support base extends into the buffer pad so that the buffer pad supports only the remaining material portion.

[0014] In the aforementioned punching device for external water cutting, the contact surfaces of the support base and the buffer pad are parallel, so that the buffer pad can support the remaining part of the external water cutting while supporting the excess material.

[0015] In the aforementioned punching device for external water cutting, the support base includes a mounting groove with an opening facing the cutter side, and a limiting portion covering at least a portion of the opening. The buffer pad is disposed in the mounting groove, and the limiting portion abuts against the buffer pad placed in the mounting groove to provide a limiting for the buffer pad along the punching direction.

[0016] In the aforementioned punching device for external water cutting, the support base further includes a positioning groove communicating with the mounting groove, the positioning groove being used to limit the external water cutting; the side wall of the limiting part constitutes part of the groove wall of the positioning groove.

[0017] In the aforementioned punching device for external water cutting, the support base includes two nested support blocks.

[0018] The aforementioned punching device for external water cutting also includes:

[0019] A base, wherein the support is disposed on the base;

[0020] Guide posts, at least two guide posts are provided on the base, and a spring is sleeved on the outside of each guide post;

[0021] A pressure plate is movably mounted above the base and is provided with a guide sleeve that cooperates with the guide post. The guide sleeve abuts against the upper end of the spring.

[0022] A mounting platform is located at one end of the pressure plate facing the base, and the cutter is detachably connected to the mounting platform;

[0023] A limiting post is provided on the base and moves against the pressure plate to limit the range of movement of the pressure plate.

[0024] In the aforementioned punching device for external water cutting, a movable connecting rod is provided on the pressure plate. One end of the connecting rod passes through the pressure plate and is threadedly connected to the limiting post. The other end of the connecting rod is provided with a limiting platform that movably abuts against the pressure plate.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] (1) By setting a buffer pad on the support base and ensuring that the projection of the cutting edge accurately covers the connection area between the scrap material and the main body, the elastic deformation of the buffer pad generates a reverse support force during punching. This bidirectional force helps to form concentrated shear stress in the connection area, promotes material fracture, achieves clean and thorough cutting, and effectively avoids the scrap material from sticking to the main body; at the same time, the buffer pad absorbs part of the impact energy, significantly reducing the rigid collision between the cutting blade and the support structure, thereby extending the service life of the cutting blade.

[0027] (2) By ensuring that the elastic recovery performance of the buffer pad is better than that of the outer water-cutting material, the buffer pad can actively rebound during punching and provide effective reverse support force for the outer water-cutting residue. This "soft-to-soft" matching mechanism is more in line with the mechanical properties of rubber materials, which helps to form a controllable fracture in the connection area, improves the cutting quality and reduces adhesion and burrs.

[0028] (3) By setting an installation groove with a limiting part on the support base, the buffer pad is stably limited in the groove, and the limiting part constrains it in the punching direction. This can effectively prevent the buffer pad from axial displacement, falling out or bulging during repeated pressure, ensuring its long-term stable operation and improving the reliability and repeatability of the device. Attached Figure Description

[0029] Figure 1 This is a partial view of the external watershed.

[0030] Figure 2 This is a perspective view of a punching device for external water cutting according to the present invention.

[0031] Figure 3 yes Figure 2 Floor plan.

[0032] Figure 4 yes Figure 3 Sectional view along the AA direction.

[0033] Figure 5 This is a 3D view of the support base.

[0034] In the diagram, 100 is the support base; 110 is the mounting groove; 120 is the limiting part; 130 is the positioning groove; 200 is the buffer pad; 300 is the cutter; 400 is the base; 500 is the guide post; 510 is the spring; 600 is the pressure plate; 610 is the guide sleeve; 620 is the mounting platform; 630 is the connecting rod; 640 is the limiting platform; 700 is the limiting post; 800 is the external water cutter; and 810 is the surplus material part. Detailed Implementation

[0035] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0036] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0037] like Figures 1 to 5 As shown, a punching device for external water cutting according to the present invention includes: a support base 100, a buffer pad 200, and a cutter 300.

[0038] Specifically, the support base 100 is used to support the outer water cutter 800; the buffer pad 200 is disposed on the support base 100 and contacts at least the excess material portion 810 of the outer water cutter 800 placed on the support base 100; the cutter 300 is movably disposed above the support base 100, and the projection of its cutting edge on the buffer pad 200 covers the connection area between the excess material portion 810 and the body of the outer water cutter 800.

[0039] During the punching process, when the cutter 300 contacts the outer water cutter 800 and applies a punching force, it pushes the remaining material portion 810 to move toward the buffer pad 200 along the punching direction, forcing the buffer pad 200 to undergo elastic deformation, thereby forming a bidirectional force on the outer water cutter 800: that is, the downward punching force applied by the cutter 300 and the upward elastic reaction force provided by the buffer pad 200.

[0040] This solution involves setting a buffer pad 200 on the support base 100 and ensuring that the projection of the cutting edge of the cutter 300 precisely covers the connection area between the scrap material and the main body. During punching, the elastic deformation of the buffer pad 200 generates a reverse support force. This bidirectional force helps to form concentrated shear stress in the connection area, promoting material fracture and achieving a clean and thorough cut, effectively preventing the scrap material from sticking to the main body. At the same time, the buffer pad 200 absorbs some of the impact energy, significantly mitigating the rigid collision between the cutter 300 and the support structure, thereby extending the service life of the cutter 300.

[0041] It is worth mentioning that the elastic deformation capability of the buffer pad 200 is designed to be stronger than that of the outer water cutter 800 material, so as to apply an elastic support force opposite to the cutting direction to the residual material portion 810 during the punching process, causing the connection area to break.

[0042] By ensuring that the elastic recovery performance of the buffer pad 200 is superior to that of the outer water-cutting material 800, the buffer pad 200 can actively rebound during punching and provide effective reverse support force to the excess material of the outer water-cutting material 800. This "soft-to-soft" matching mechanism is more in line with the mechanical properties of rubber-like materials, which helps to form a controllable fracture in the connection area, improves the cutting quality, and reduces adhesion and burrs.

[0043] Preferably, the cushioning pad 200 is made of polyurethane material.

[0044] The buffer pad 200 is made of polyurethane material. Because it has high elasticity, wear resistance, resistance to permanent compression deformation and moderate hardness, it can maintain stable buffer performance and shape recovery ability during repeated punching. This ensures the consistency of punching effect, extends the service life of the buffer pad 200 and reduces maintenance costs.

[0045] In one embodiment, a portion of the support base 100 extends into the buffer pad 200, such that the buffer pad 200 only supports the scrap portion 810, while the main body of the outer water cutter 800 is directly supported by the rigid support base 100. This differentiated support structure ensures that the punching force is precisely applied to the connection area between the scrap and the main body, preventing the main body from shifting or deforming due to excessive elastic support, thereby improving positioning accuracy and punching consistency.

[0046] In another embodiment, the contact surfaces of the support base 100 and the buffer pad 200 are parallel to each other, so that the buffer pad 200 can support the remaining material while also stably supporting the rest of the outer water cutter 800. This design ensures uniform overall stress distribution and effectively prevents the outer water cutter 800 from warping, slipping, or partially collapsing during the punching process, thus ensuring the integrity of the product's shape and the accuracy of the punching position.

[0047] In order to install and fix the buffer pad 200 on the support base 100, the support base 100 is provided with a mounting groove 110 with an opening facing the cutter 300, and a limiting part 120 covering at least a partial area of ​​the opening; the buffer pad 200 is installed in the mounting groove 110, and its upper surface contacts and abuts against the limiting part 120, thereby providing a limit for the buffer pad 200 along the punching direction.

[0048] By providing a mounting groove 110 with a limiting part 120 on the support base 100, the buffer pad 200 is stably confined in the groove, and the limiting part 120 constrains it in the punching direction. This effectively prevents the buffer pad 200 from axial displacement, detachment, or bulging during repeated pressure, ensuring its long-term stable operation and improving the reliability and repeatability of the device.

[0049] Furthermore, the support base 100 also includes a positioning groove 130 communicating with the mounting groove 110, which is used to limit the external water cutter 800; wherein, the side wall of the limiting part 120 constitutes part of the groove wall of the positioning groove 130.

[0050] By providing a positioning groove 130 in the support base 100 that communicates with the mounting groove 110, and utilizing the side wall of the limiting part 120 as part of the groove wall of the positioning groove 130, not only is the overall structure simplified, but precise positioning of the external water cutter 800 body is also achieved. This integrated design effectively prevents the external water cutter 800 from shifting laterally during the punching process, ensuring that the connection area between the scrap and the main body is always aligned with the cutting edge of the cutter 300, thereby improving the punching success rate and product qualification rate.

[0051] The support base 100 includes two nested support blocks.

[0052] Because the support block needs to integrate structures such as the mounting groove 110, the limiting part 120, and the positioning groove 130, the overall structure is quite complex. If an integrated design is adopted, it is necessary to rely on a machining center for multi-stage precision machining, which is not only complex but also has high manufacturing costs. However, by splitting the support base 100 into two nested support blocks, each component can be machined independently using a simpler machining method (such as wire cutting), which significantly simplifies the manufacturing process and reduces machining difficulty and costs.

[0053] This solution also includes: a base 400, with a support 100 fixedly mounted on the base 400; at least two guide posts 500 mounted on the base 400, each guide post 500 having a spring 510 sleeved on its outer side; a pressure plate 600 movably mounted above the base 400, with a guide sleeve 610 cooperating with the guide post 500, the guide sleeve 610 abutting against the upper end of the spring 510; a mounting platform 620 fixed to the side of the pressure plate 600 facing the base 400, with the cutter 300 detachably connected to the mounting platform 620; and a limiting post 700 mounted on the base 400, which moves against the pressure plate 600 during movement to limit the downward stroke of the pressure plate 600.

[0054] The detachable connection between the cutter 300 and the mounting table 620 is preferably achieved through a threaded connection. Through the coordinated operation of the base 400, guide post 500, spring 510, pressure plate 600, mounting table 620, and limiting post 700, a punching actuator with buffering and automatic reset functions is constructed. Specifically, the guide post 500 and spring 510 work together to allow the pressure plate 600 to automatically spring back to its original position after punching, supporting continuous operation. The limiting post 700 effectively limits the maximum downward position of the pressure plate 600, preventing damage to the cutter 300 or the workpiece due to over-punching. The cutter 300 adopts a detachable connection method, facilitating maintenance, replacement, and adaptation to different product specifications. The overall structure is compact, operates smoothly, and significantly improves the automation level and operational safety of the equipment.

[0055] A movable connecting rod 630 is provided on the pressure plate 600. One end of the connecting rod 630 passes through the pressure plate 600 and is threadedly connected to the limiting post 700. The other end of the connecting rod 630 is provided with a limiting platform 640 that movably abuts against the pressure plate 600.

[0056] A movable connecting rod 630, threadedly connected to a limiting post 700, is provided on the pressure plate 600, and a limiting platform 640 is provided at the end of the connecting rod 630. The maximum downward position of the pressure plate 600 can be precisely controlled by adjusting the screw-in depth of the connecting rod 630. This design enables flexible adjustment of the punching force, adapting to materials of different thicknesses or hardness for external water-cutting 800, further optimizing the cutting effect, avoiding undercutting or overcutting, and improving process adaptability and product quality consistency.

[0057] The working process of this solution is as follows: First, the outer water-cutting cutter 800 to be processed is placed on the support base 100, so that the excess material 810 to be cut is placed in the buffer pad 200 area. At the same time, the positioning groove 130 on the support base 100 positions the outer water-cutting cutter 800 body to ensure that the connection area between the excess material and the body is accurately located below the projection of the cutting edge of the cutter 300. Then, the punching device is started, and the external power drives the pressure plate 600 to move downward along the guide column 500, driving the cutter 300 installed at its lower end to move downward synchronously. When the cutter 300 contacts the excess material of the outer water-cutting cutter 800 and continues to apply punching force, the excess material 810 is pushed towards the buffer pad 200, forcing the buffer pad made of high elastic polyurethane material to be pushed down. The punch pad 200 undergoes elastic deformation and provides an elastic support force opposite to the punching direction. Under the combined action of the downward punching force of the cutter 300 and the upward reaction force of the buffer pad 200, a highly concentrated shear stress is formed in the connecting area, achieving a clean and thorough fracture and effectively preventing the residual material from sticking to the main body. When the pressure plate 600 descends to the set position, it contacts the limiting post 700 on the base 400 and stops, preventing over-punching damage to the tool or workpiece. After punching is completed, the external power is removed, and the pressure plate 600 automatically resets under the elastic force of the spring 510 on the outside of the guide post 500. The cutter 300 detaches from the workpiece, and the operator or automated mechanism can then remove the finished product. The residual material falls off naturally without additional trimming. The entire process is smooth and efficient, combining high precision, high reliability, and good automation adaptability.

[0058] It should be noted that in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly defined. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly defined. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0059] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0060] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A punching device for external water cutting, characterized in that, include: Support base, which is used to provide support for the external water shear; A buffer pad is disposed on the support base, and the buffer pad is in contact with at least the excess material portion of the outer water cutter placed on the support base; A cutter is movably disposed above the support base, and the projection of the cutting edge of the cutter on the buffer pad covers the connection area between the remaining material portion and the remaining portion of the external water cutter. When the cutter contacts the external water cutter and applies a cutting force, it pushes the remaining material to move along the cutting direction toward the buffer pad and forces the buffer pad to undergo elastic deformation, providing a bidirectional force for the external water cutter.

2. The punching device for external water cutting as described in claim 1, characterized in that, The elastic deformation capacity of the buffer pad is greater than that of the external water cutter, so as to apply an elastic support force opposite to the cutting direction to the remaining material during the punching process, causing the connection area to break.

3. The punching device for external water cutting as described in claim 1, characterized in that, The cushioning pad is made of polyurethane material.

4. The punching device for external water cutting as described in claim 1, characterized in that, A portion of the support extends into the buffer pad, allowing the buffer pad to support only the excess material portion.

5. A punching device for external water cutting as described in claim 1, characterized in that, The contact surfaces of the support base and the buffer pad are parallel, allowing the buffer pad to support the remaining material while simultaneously supporting the rest of the outer water cutter.

6. A punching device for external water cutting as described in claim 1, characterized in that, The support includes a mounting groove with an opening facing the cutter, and a limiting portion covering at least a portion of the opening. The buffer pad is disposed in the mounting groove, and the limiting portion abuts against the buffer pad placed in the mounting groove to provide a limiting for the buffer pad along the punching direction.

7. A punching device for external water cutting as described in claim 6, characterized in that, The support base also includes a positioning groove that communicates with the mounting groove. The positioning groove is used to limit the external water cutter. The side wall of the limiting part forms part of the groove wall of the positioning groove.

8. A punching device for external water cutting as described in claim 1, characterized in that, The support base includes two nested support blocks.

9. A punching device for external water cutting as described in claim 1, characterized in that, Also includes: A base, wherein the support is disposed on the base; Guide posts, at least two guide posts are provided on the base, and a spring is sleeved on the outside of each guide post; A pressure plate is movably mounted above the base and is provided with a guide sleeve that cooperates with the guide post. The guide sleeve abuts against the upper end of the spring. A mounting platform is located at one end of the pressure plate facing the base, and the cutter is detachably connected to the mounting platform; A limiting post is provided on the base and moves against the pressure plate to limit the range of movement of the pressure plate.

10. A punching device for external water cutting as described in claim 9, characterized in that, The pressure plate is provided with a movable connecting rod. One end of the connecting rod passes through the pressure plate and is threadedly connected to the limiting post. The other end of the connecting rod is provided with a limiting platform that movably abuts against the pressure plate.

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