Punching cutter device

Abstract

The punching cutter device provided by the embodiment of the utility model comprises an upper cutter and a lower cutter, the upper cutter comprises a punching part and a guide part, the punching part comprises an upper cutter surface, and the guide part comprises a guide surface connected with the upper cutter surface; the lower cutter comprises a lower cutter surface opposite to the upper cutter surface; during working, the upper cutter longitudinally presses, and the distance between the lower cutter and the guide face in the longitudinal pressing direction is smaller than the distance between the upper cutter face and the lower cutter face in the longitudinal pressing direction. A product with a water gap is placed on the lower cutter, and the distance between the lower cutter and the guide face in the longitudinal pressing direction is smaller than the distance between the upper cutter face and the lower cutter face, so that when the upper cutter presses downwards in the longitudinal direction, the guide face of the guide part moves close to the lower cutter, then the lower cutter moves to the punching part, and the punching part cuts off the water gap. The guiding and buffering effects of the guiding part ensure that the punching part does not collide with the lower cutter at the moment that the water gap is completely cut off, so that the cutting edges of the upper cutter and the lower cutter are protected, the service life of the device is prolonged, and the water gap cutting work quality is ensured.

Description

[Technical field]

[0001] The utility model relates to the technical field of injection molding, in particular to a punching tool device. [Background technology]

[0002] In the plastics industry, especially the injection molding industry, after some products are demoulded, the nozzle is connected to the product and needs to be cut off by scissors, punching tools, etc. For functional and appearance requirements, the smaller the remaining nozzle height, the better.

[0003] At present, there are punching tool devices that use upper and lower tools to achieve nozzle removal. However, there is no transition structure at the front end of the upper and lower tools. If the residual nozzle after removal is to be controlled within a small height range, the distance between the upper and lower tool faces is very close during the process of the upper tool pressing down to remove the nozzle. At this time, the upper and lower tools may slightly deviate from the blade position due to their own elasticity and contact with other parts, making it easy for the upper and lower tools to collide. In the long run, the upper and lower tool blades will be worn or even damaged, affecting the normal use of their removal function, and thus making the nozzle removal effect that can be achieved poor.

[0004] Therefore, in order to solve the above problems, an updated tool device for punching the nozzle is urgently needed so that when the residual nozzle height is close to 0, the upper and lower tools will not collide with each other. [Utility Model Content]

[0005] In order to solve the technical problem that the upper and lower knives of the existing punching and cutting water outlet tool device are prone to collision, the utility model provides a punching and cutting tool device.

[0006] The solution to the technical problem of the utility model is to provide a punching tool device, including an upper tool and a lower tool, the upper tool including a punching part and a guide part, the punching part including an upper tool surface, the guide part including a guide surface connected to the upper tool surface; the lower tool including a lower tool surface arranged opposite to the upper tool surface and the guide surface; when working, the upper tool is longitudinally pressed relative to the lower tool, and the spacing between the lower tool and the guide surface in the longitudinal pressing direction is smaller than the distance between the upper tool surface and the lower tool surface in this direction.

[0007] Preferably, the guide surface comprises a straight guide surface and an oblique guide surface connected to the straight guide surface at an angle, the upper cutting surface, the straight guide surface and the oblique guide surface are connected in sequence, and the upper cutting surface forms an upper cutting edge at the junction with the straight guide surface.

[0008] Preferably, the straight guide surface and the upper cutting surface are in the same plane, and an angle of 2 to 6° is formed between the oblique guide surface and an extension surface of the upper cutting surface extending in the direction of the straight guide surface.

[0009] Preferably, the lower tool also includes a placement surface close to the upper tool and adjacent to the lower tool surface, the lower tool surface is parallel to the upper tool surface, and the lower tool forms a lower tool edge at the junction of the placement surface and the lower tool surface, and the lower tool edge can resist the inclined guide surface in a working state.

[0010] Preferably, the vertical distance between the parallel extension surfaces of the upper cutting edge and the lower cutting edge is 0.05-0.5 mm.

[0011] Preferably, the punching tool device also includes a tool holder that can be connected to at least one of the upper tools, and the tool holder has a limiting hole in the direction from one end close to the upper tool to the opposite end, and the upper tool enters the limiting hole and is connected to the upper tool.

[0012] Preferably, the punching tool device also includes a fixing part, and the tool holder is provided with a fixing channel connected to the limiting channel on the side surface between the two ends toward the interior of the tool holder, and the upper tool is provided with a matching hole corresponding to the fixing part, and the fixing part passes through the fixing channel and the matching hole in sequence from the outside of the upper tool to fix the tool holder and the upper tool.

[0013] Preferably, the hardness of the contact portion between the tool holder and the fixing member and the upper tool is smaller than that of the upper tool.

[0014] Preferably, the punching tool device comprises one or more upper tools and a lower tool matching the upper tools.

[0015] Preferably, a hollow avoidance groove is opened in the middle of the guide portion at one end of the upper tool close to the lower tool, and the avoidance groove passes through the middle of the guide surface and the end surface of the upper tool close to one end of the lower tool to form two connected openings.

[0016] Compared with the prior art, the punching tool device provided by the utility model has the following advantages:

[0017] 1. The punching tool device provided by the embodiment of the utility model comprises an upper tool and a lower tool, the upper tool comprises a punching part and a guide part, the punching part comprises an upper blade surface, the guide part comprises a guide surface connected to the upper blade surface; the lower tool comprises a lower blade surface arranged opposite to the upper blade surface and the guide surface; when working, the upper tool is longitudinally pressed relative to the lower tool, and the distance between the lower tool and the guide surface in the longitudinal pressing direction is smaller than the distance between the upper blade surface and the lower blade surface in the direction. The lower tool is placed with a product with a nozzle, the upper tool is provided with a guide part, and the distance between the lower tool and the guide surface in the longitudinal pressing direction is smaller than the distance between the upper blade surface and the lower blade surface in the direction, so that when the upper tool is longitudinally pressed downward, the guide surface of the guide part first moves against the edge of the lower tool, and then the punching part moves to the lower tool, and the punching part cuts off the nozzle, and the guiding and buffering transition of the guide part ensures that the product will not be cut by mistake, and at the moment when the nozzle is completely cut off, the punching part does not collide with it, thereby protecting the cutting edges of the upper tool and the lower tool, extending the service life of the device and ensuring the quality of nozzle cutting.

[0018] 2. The guide surface of the embodiment of the utility model includes a straight guide surface and an inclined guide surface connected to the straight guide surface at an angle. The upper blade surface, the straight guide surface and the inclined guide surface are connected in sequence, and the upper blade surface forms an upper blade edge at the junction with the straight guide surface. The upper blade edge cuts off the water outlet when the upper tool is pressed vertically; the inclined guide surface guides the upper blade edge to a suitable position before the upper blade edge presses vertically to punch the water outlet, preventing the upper blade edge from colliding with the lower tool at the moment when the water outlet is completely cut off, thereby damaging the blade; the straight guide surface is close to the product connected to the water outlet before the upper blade edge cuts off the water outlet to further adjust the position of the upper tool, preventing the upper blade edge from cutting the product.

[0019] 3. The straight guide surface and the upper blade surface of the utility model embodiment are in the same plane, and the inclined guide surface and the extended surface of the upper blade surface extending in the direction of the straight guide surface form an angle of 2 to 6 degrees. The inclined guide surface has a suitable angle so that when the upper blade is pressed down, the inclined guide surface moves against the end of the lower blade, and the force generated by the abutment causes the upper blade to deviate from the lower blade in the vertical pressing direction, preventing the upper blade edge from colliding with the lower blade and damaging the upper and lower blades.

[0020] 4. The lower tool of the embodiment of the utility model also includes a placement surface close to the upper tool and adjacent to the lower tool surface. The lower tool surface is parallel to the upper tool surface. The lower tool forms a lower tool edge at the junction of the placement surface and the lower tool surface. The lower tool edge can abut against the inclined guide surface in the working state to prevent the upper tool edge from colliding with the lower tool edge.

[0021] 5. The vertical distance between the parallel extension surfaces of the upper blade edge and the lower blade edge of the utility model embodiment is 0.05-0.5 mm. The upper and lower blade edges are misaligned to prevent the blade from hitting or excessive cutting resistance during the process of punching the water outlet.

[0022] 6. The punching tool device of the embodiment of the utility model also includes a tool holder that can be connected to at least one upper tool. The tool holder is provided with a limit hole in the direction from one end close to the upper tool to the opposite end thereof. The upper tool enters the limit hole and is connected to the upper tool. The limit hole limits the position of the upper tool. The upper tool is connected to the tool holder. The tool holder can be connected to an external driving device to drive the upper tool to extend and retract longitudinally and cooperate with the lower tool to punch the water outlet.

[0023] 7. The punching tool device of the embodiment of the utility model also includes a fixing part. A fixing channel connected to the limiting channel is opened on the side between the two ends of the tool holder toward the inside of the tool holder. A matching hole is opened on the fixing part corresponding to the upper tool. The fixing part passes through the fixing channel and the matching hole in sequence from the outside of the upper tool to fix the tool holder and the upper tool.

[0024] 8. The hardness of the tool holder and the fixing part of the embodiment of the utility model is smaller than that of the upper tool, so that in the process of the upper tool being pressed down and abutting against the inclined guide surface, the fixing part and the tool holder plane in contact with the upper tool can undergo extremely slight elastic deformation, so that the upper tool can move axially away from the direction of the lower blade edge, and then the lower blade edge can smoothly move along the inclined guide surface to the straight guide surface and the upper blade edge, compensating for the misalignment between the upper blade edge and the lower blade edge, ensuring that there will be no collision with the tool or too much movement resistance between the upper blade surface and the lower blade surface at the moment of cutting off the water outlet.

[0025] 9. The punching tool device of the embodiment of the utility model includes one or more upper tools and lower tools matching the upper tools, so as to cut off the water outlets connected to multiple products at the same time, thereby improving work efficiency, or when one or some of the upper tools or lower tools are damaged, other devices can serve as substitutes to extend the service life of the punching tool device.

[0026] 10. In the embodiment of the utility model, a hollow avoidance groove is opened in the middle of the guide part at one end of the upper tool close to the lower tool. The avoidance groove penetrates the middle of the guide surface and the end surface of the upper tool close to the lower tool to form two connected openings, so that the guide part can avoid the water outlet before the upper blade cuts off the water outlet, and the guide part can smoothly realize the function of guiding and buffering the transition.

Brief Description of the Drawings

[0027] Figure 1 It is a schematic diagram of a punching tool device provided in an embodiment of the utility model.

[0028] Figure 2 The utility model is a product with a water outlet provided in an embodiment of the utility model.

[0029] Figure 3 It is a schematic diagram of a tool on a punching tool device provided in an embodiment of the utility model.

[0030] Figure 4It is a schematic diagram of a tool under a punching tool device provided in an embodiment of the utility model.

[0031] Figure 5 It is a schematic diagram of a tool holder of a punching tool device provided in an embodiment of the utility model.

[0032] Figure 6 This utility model embodiment Figure 1 Cross-sectional view of the punching tool device along the AA direction.

[0033] Figure 7 It is a partial structural schematic diagram of a punching tool device provided in an embodiment of the utility model.

[0034] Figure 8 It is a partial enlarged view of a punching tool device provided in an embodiment of the utility model.

[0035] Figure 9a It is a schematic diagram of the descent of an upper cutter during a punching process of a punching cutter device provided in an embodiment of the utility model.

[0036] Figure 9b This is a schematic diagram of an upper cutter contacting a product during a punching process of a punching cutter device provided by an embodiment of the utility model.

[0037] Fig.9c It is a schematic diagram of an upper cutter starting to cut a water outlet during a cutting process of a cutting tool device provided by an embodiment of the utility model.

[0038] Figure 9d It is a schematic diagram of a water nozzle being cut off during a punching process of a punching tool device provided in an embodiment of the utility model.

[0039] Description of the accompanying drawings:

[0040] 1. Punching tool device; 2. Product; 3. Water nozzle;

[0041] 11. Upper tool; 12. Lower tool; 13. Tool holder; 14. Fixing piece;

[0042] 111, punching part; 112, guide part; 113, matching hole; 121, main body; 122, cutting table; 131, limiting hole; 132, fixing hole; 113, guide surface;

[0043] 1111, upper blade surface; 1121, oblique guide surface; 1122, straight guide surface; 1123, avoidance groove; 1124, extension surface; 1221, placement surface; 1222, lower blade surface; 1223, lower blade edge;

[0044] 11111, upper blade edge; 11231, opening. [Specific implementation method]

[0045] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below with reference to the accompanying drawings and implementation examples. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0046] It should be noted that the terms "first" and "second" and the like in the specification and claims of the present invention are used to distinguish different objects rather than to describe a specific order.

[0047] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0048] In the present invention, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings. These terms are mainly used to better describe the present invention and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0049] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in this utility model can be understood according to specific circumstances.

[0050] In addition, the terms "installed", "set", "provided with", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0051] See also Figure 1 , Figure 2 , Figure 3 and Figure 4The first embodiment of the utility model provides a punching tool device 1, which is used for punching a nozzle 3 connected to the end of a product 2. The nozzle 3 is the redundant part formed by the residual material during the production of the product 2, which affects the specifications and quality of the product 2. The punching tool device 1 includes an upper tool 11 and a lower tool 12. The upper tool 11 includes a punching portion 111 and a guide portion 112. The punching portion 111 includes an upper tool surface, and the guide portion 112 includes a guide surface 113 connected to the upper tool surface 1111. The lower tool 12 includes a lower tool surface 1222 arranged opposite to the upper tool surface 1111 and the guide surface 113. During operation, the upper tool 11 is longitudinally pressed relative to the lower tool 12, and the distance between the upper tool 11 and the guide surface 113 in the longitudinal pressing direction is smaller than the distance between the upper tool surface 1111 and the lower tool surface 1222 in this direction.

[0052] The lower cutter 12 is placed with the product 2 connected to the nozzle 3, and the nozzle 3 extends from the edge of the lower cutter 12 and is suspended in the air near the upper cutter 11. The upper cutter 11 is provided with a guide portion 112, and the distance between the lower cutter 12 and the guide surface 113 in the longitudinal pressing direction is smaller than the distance between the upper cutter surface 1111 and the lower cutter surface 1222 in the direction, so that when the upper cutter 11 presses down longitudinally to cut the nozzle 3, the guide surface 113 of the guide portion 112 first contacts the lower cutter 12, and the guide surface 113 of the guide portion 112 moves against the lower cutter 12, and then the punching portion 111 approaches the lower cutter 12 to cut off the nozzle 3 connected to the product 2. The guiding positioning and buffering transition function of the guide part 112 ensure that at the moment the water nozzle 3 is completely cut off, the cutting part 111 does not collide with the lower tool 12, that is, it can avoid the upper tool 11 and the lower tool 12 from colliding, thereby protecting the cutting edges of the upper tool 11 and the lower tool 12, extending the service life of the device and ensuring the quality of the water nozzle 3 cutting work.

[0053] For further information, see Figure 2 , Figure 3 and Figure 4The guide surface 113 includes a straight guide surface 1122 and an oblique guide surface 1121 connected to the straight guide surface 1122 at an angle. The upper blade surface 11, the straight guide surface 1122 and the oblique guide surface 1121 are connected in sequence. The other end of the straight guide surface 1122 is connected to the upper blade surface 1111, and the upper blade surface 1111 forms an upper blade edge 11111 at the junction between it and the straight guide surface 1122. During the longitudinal pressing process of the upper tool 11, the upper blade edge 11111 contacts the water outlet 3 and cuts off the water outlet 3. The oblique guide surface 1121 guides the upper blade edge 11111 to be in a suitable position when punching the water outlet 3 before the upper blade edge 11111 longitudinally presses and punches the water outlet 3, so as to prevent the upper blade edge 11111 from colliding with the lower tool 12 at the moment when the water outlet 3 is completely cut off, thereby damaging the blade. After the inclined guide surface 1121 passes through the lower blade edge 1223 and before the upper blade edge 11111 cuts off the water outlet 3, the straight guide surface 1122 first clings to the product 2 connected to the water outlet 3 to further adjust the position of the upper tool 11 to prevent the upper blade edge 11111 from cutting the product 2 during the punching process and causing damage to the product 2.

[0054] It should be supplemented that the inclined guide surface 1121 is the main structure for guiding the positional relationship between the upper tool 11 and the lower tool 12. It can be set to include but not limited to an inclined plane and an inwardly concave or outwardly convex arc surface according to application scenarios and production requirements.

[0055] For further information, see Figure 3 , Figure 4 and Figure 6 The lower cutter 12 also includes a placement surface 1221. The lower cutter surface 1222 is parallel to the upper cutter surface 1111. The lower cutter 12 forms a lower cutter edge 1223 at the junction of the placement surface 1221 and the lower cutter surface 1222. The lower cutter edge 1223 can abut against the oblique guide surface 1121 in the working state. The placement surface 1221 is used to place the product 2 with the nozzle 3. The connection between the product 2 and the nozzle 3 is located at the lower cutter edge 1223 at the end of the placement surface 1221. In order to control the lower cutter edge 1223 to achieve the desired position change in the working state, it abuts against the oblique guide surface 1121 in the initial state of installation of the punching cutter device 1. In the process of longitudinally pressing the punching nozzle 3 after the upper cutter 11 is lifted, the oblique guide surface 1121 first moves against the lower cutter edge 1223 to guide and locate the position of the upper cutter edge 11111 to punch the nozzle 3, so as to prevent the upper and lower cutters 12 from colliding at the moment when the punching nozzle 3 is completed. In addition, it can be understood that the upper blade surface 1111 is arranged in parallel with the lower blade surface 1222 to match the straight trajectory of the upper blade surface 1111 when punching. During the process of the upper blade edge 11111 moving downward to punch the water outlet 3 and continuing to move after the punching is completed, the upper blade surface 1111 will not collide or cut with the lower blade surface 1222.

[0056] It should be supplemented that the lower tool can be a simple cylindrical structure. In this case, the end face of the lower tool close to one end of the upper tool is the placement surface 1221, and the side adjacent to the placement surface 1221 and opposite to the upper tool 11 is the lower tool surface 1222; in addition, the lower tool 12 can also be a structure including different functional parts so that it can be more flexibly applied to different production situations or application scenarios, such as the lower tool 12 includes a main body 121 and a cutting table 122 arranged on the main body 121, in which the main body 121 plays a supporting role, and the cutting table 122 includes a placement surface 1221 and a lower tool surface 1222; etc.

[0057] For further information, see Figure 7 and Figure 8 , the straight guide surface 1122 and the upper blade surface 1111 are in the same plane, and the inclined guide surface 1121 and the extended surface 1124 extending from the upper blade surface 1111 to the straight guide surface 1122 form an angle of 2 to 6 degrees, preferably 3 to 5 degrees, and specifically 2 degrees, 3 degrees, 4 degrees, 5 degrees, 6 degrees, etc. When the lower blade edge 1223 initially abuts against the inclined guide surface 1121, the vertical distance between the upper blade edge 11111 and the parallel extended surface of the lower blade edge 1223 is 0.05 to 0.5 mm, preferably 0.1 to 0.2 mm, and specifically 0.1 mm, 0.2 mm, etc.; according to different application scenarios, the vertical distance can also be fine-tuned.

[0058] Please combine Figure 4 and Figure 6 The oblique guide surface 1121 is an inclined surface, so that when the upper tool 11 is pressed down against the oblique guide surface 1121, the lower blade edge 1223 is never in the plane where the upper blade edge 11111 extends from the upper blade surface 1111 (excluding the case where the lower blade edge 1223 is pressed against the junction of the oblique guide surface 1121 and the straight guide surface 1122), that is, the upper blade edge 11111 and the lower blade edge 1223 are misaligned in the axial direction. When the tool 11 is pressed longitudinally, the upper tool 11 is offset in the axial direction away from the lower tool 12 so that the lower tool edge 1223 always presses against the inclined guide surface 1121, and the misalignment gradually decreases, so that the upper tool edge 11111 is in an appropriate position when the water outlet 3 is finally punched, ensuring that after the water outlet 3 is cut off, the upper tool edge 11111 will not collide with the lower tool edge 1223 or the contact resistance between the upper tool surface 1111 and the lower tool surface 1222 will be too large during the punching process.

[0059] Among them, the inclination angle of the inclined guide surface 1121 should not be too large or too small. If the angle is too large, the distance that the inclined guide surface 1121 moves against the lower blade edge 1223 is too short under the premise of ensuring a certain amount of misalignment between the upper blade edge 11111 and the lower blade edge 1223. In the punching process with high speed and short time, it is difficult for the inclined guide surface 1121 to fully play the role of buffering and guiding the positioning of the upper blade edge 11111. At the same time, if the angle is too large, the upper tool will also generate a large offset force due to the abutment and movement, which is easy to damage the upper tool. On the contrary, if the angle is too small, the distance that the inclined guide surface 1121 moves against the lower blade edge 1223 is too long, and the buffering is too much, which may cause excessive offset in the process of cooperating with other components, and is also not conducive to guiding and positioning the upper blade edge 11111 to a suitable position. Similarly, to ensure that the buffering and guiding positioning functions of the inclined guide surface 1121 are fully utilized, the vertical distance between the upper and lower blade edges 1223 and the parallel extension surface of the lower blade edge 1223 (ie, the initial abutment misalignment) should not be too large or too small.

[0060] For further information, see Figure 2 and Figure 3 A hollow avoidance groove 1123 is also provided in the middle of the guide portion 112. The avoidance groove 1123 penetrates the middle of the guide surface 113 and the end surface of the upper tool 11 close to the lower tool 12 to form two connected openings 11231, so that the guide portion 112 can avoid the water outlet 3 before the upper blade edge 11111 cuts off the water outlet 3, the lower blade edge 1223 can abut against the inclined guide surface 1121, and the product 2 can be close to the straight guide surface 1122, so that the guide portion 112 can smoothly achieve the guiding and buffering transition functions.

[0061] It should be noted that the avoidance groove 1123, under the premise of penetrating the guide surface 113 and the end surface of the upper cutter 11 close to the lower cutter 12, can selectively penetrate the opposite surface of the guide surface 113 to form a three-sided through-avoidance groove 1123, or not penetrate the opposite surface of the guide surface 113 to form a two-sided through-avoidance groove 1123 according to actual needs. If it is chosen not to penetrate the opposite surface of the guide surface 113, the avoidance groove 1123 should have a space size and depth that can at least allow the nozzle 3 to be accommodated therein, so that the guide part 112 can avoid the nozzle 3 during punching.

[0062] For further information, see Figure 1 , Figure 5 and Figure 6The punching tool device 1 also includes a tool holder 13 that can be connected to at least one upper tool 11. The tool holder 13 is provided with a limiting hole 131 along the direction from one end close to the upper tool 11 to the opposite end thereof. The upper tool 11 passes through the limiting hole 131 and is connected to the upper tool 11. The limiting hole 131 limits the position of the upper tool 11. The upper tool 11 is connected to the tool holder 13. In actual application, the tool holder 13 can be connected to an external driving device to drive the upper tool 11 to extend and retract longitudinally, and cooperate with the lower tool 12 to punch the nozzle 3.

[0063] It should be noted that the inner shape of the limiting hole 131 must correspond to the shape of this end of the upper tool 11. And according to actual application and production requirements, the limiting hole 131 can pass through both ends of the tool, or not pass through the end of the tool holder 13 away from the upper tool 11.

[0064] For further information, see Figure 1 and Figure 6 The punching tool device 1 further includes a fixing member 14, which can be a screw or the like. The tool holder 13 has a fixing hole 132 connected to the limiting hole 131 on the side between the two ends toward the inside of the tool holder 13. The upper tool 11 has a matching hole 113 corresponding to the fixing member 14. The fixing member 14 passes through the fixing hole 132 and the matching hole 113 from the outside of the upper tool 11 in sequence to fix the tool holder 13 and the upper tool 11.

[0065] For further information, see Figure 3 , Figure 4 and Figure 6 The hardness of the contact part between the tool holder 1313 and the fixing part 14 and the upper tool 11 is less than that of the upper tool 11, so that when the upper tool 11 is pressed down and abutted against the inclined guide surface 1121, the plane of the fixing part 14 and the tool holder 13 close to the upper tool 11 can undergo extremely slight elastic deformation, so that the upper tool 11 can move in the direction of axial deviation from the lower blade edge 1223, so as to ensure that the lower blade edge 1223 can smoothly move along the inclined guide surface 1121 to the upper blade edge 11111, compensate for the misalignment between the upper blade edge 11111 and the lower blade edge 1223, and realize that the cutting of the water outlet 3 will not cause the knife to collide or the movement resistance between the upper blade surface and the lower blade surface 1221 will be too large. Similarly, after the current sprue 3 is punched, before the next sprue 3 is punched, the upper tool 11 is lifted, and there is no external force generated by the lower tool 12 against the upper tool 11, the plane of the fixing part 14 and the tool seat 13 close to the upper tool 1111 can elastically return to the initial state, so that when the inclined guide surface 1121 presses against the lower blade edge 1223, the upper blade edge 11111 and the lower blade edge 1223 can have the initial offset again.

[0066] In order to achieve a good punching effect, the upper cutter 11 is generally made of a material with a relatively high hardness, such as alloy tool steel (eg, SKD11, SKH51), etc.

[0067] For further information, see Figure 1 and Figure 2 The punching tool device 1 includes one or more upper tools 11 and lower tools 12 matched with the upper tools 11. Within the allowable range of the tool holder 13, one tool holder 13 can be fixed with multiple upper tools 11 at the same time, so that the tool holder 13 can drive multiple tools to press down only under the external driving action once, and cut off the nozzles 3 connected to multiple products 2 at the same time, which can save the production cost of the punching nozzle 3 device and greatly improve the work efficiency. In addition, in some cases, when one or some of the upper tools 11 or the lower tools 12 are damaged, the other upper tools 11 and the lower tools 12 can be used as substitutes, thereby extending the overall service life of the punching tool device 1.

[0068] See also Figure 1-Figure 4 and Figure 9a-9d In order to more clearly understand the operation mechanism of the punching tool device 1 for punching the nozzle 3, the punching process is briefly described below: when the upper tool 11 is initially installed, the inclined guide surface 1121 abuts against the lower blade edge 1223, and the upper blade edge 11111 and the lower blade edge 1223 have a certain amount of misalignment in the axial direction. When it is necessary to cut the nozzle 3 connected to the product 2, the upper tool 11 is lifted, and the product 2 is placed on the placement surface 1221, the nozzle 3 is suspended, and the connection position between the nozzle and the product 2 is at the lower blade edge 1223; the upper tool 11 is pressed down under the drive of the tool holder 13, and the inclined guide surface 1121 first abuts against the lower blade edge 1223, and the upper blade edge 11111 and the lower blade edge 1223 have a certain amount of misalignment in the axial direction. , at this time, the water outlet 3 is located in the avoidance groove 1123 and is not in contact with the inclined guide surface 1121; during continuous downward pressure, due to the extremely slight elastic deformation of the plane of the fixing part 14 and the tool holder 13 that are close to the upper tool 11 and the extremely small assembly gap between the upper tool 11 and the tool holder 13, the upper tool 11 is offset away from the lower tool 12, so that the lower tool edge 1223 is always against the inclined guide surface 1121; when the upper tool edge 11111 moves to contact with the water outlet 3, it starts to cut the water outlet 3, and at the moment when the upper tool 11 edge punches the water outlet 3, due to the guiding and buffering effect of the inclined guide surface 1121, when the residual amount after the water outlet 3 is punched is 0, the upper tool edge 11111 and the lower tool edge 1223 will not collide.

[0069] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A punching tool device, characterized in that: It comprises an upper tool and a lower tool, the upper tool comprises a punching portion and a guiding portion, the punching portion comprises an upper tool surface, and the guiding portion comprises a guiding surface connected to the upper tool surface; the lower tool comprises a lower tool surface arranged opposite to the upper tool surface and the guiding surface; when working, the upper tool is longitudinally pressed relative to the lower tool, and the distance between the lower tool and the guiding surface in the longitudinal pressing direction is smaller than the distance between the upper tool surface and the lower tool surface in this direction.

2. The punching tool device according to claim 1, characterized in that: The guide surface includes a straight guide surface and an oblique guide surface connected to the straight guide surface at an angle, the upper blade surface, the straight guide surface and the oblique guide surface are connected in sequence, and the upper blade surface forms an upper blade edge at the junction with the straight guide surface.

3. The punching tool device according to claim 2, characterized in that: The straight guide surface and the upper cutting surface are in the same plane, and an angle of 2 to 6° is formed between the oblique guide surface and an extension surface of the upper cutting surface extending in the direction of the straight guide surface.

4. The punching tool device according to claim 2, characterized in that: The lower tool also includes a placement surface close to the upper tool and adjacent to the lower tool surface, the lower tool surface is parallel to the upper tool surface, and the lower tool forms a lower tool edge at the junction of the placement surface and the lower tool surface, and the lower tool edge can abut against the inclined guide surface in a working state.

5. The punching tool device according to claim 4, characterized in that: The vertical distance between the parallel extension surfaces of the upper blade edge and the lower blade edge is 0.05-0.5 mm.

6. The punching tool device according to claim 1, characterized in that: The punching tool device also includes a tool holder that can be connected to at least one of the upper tools. The tool holder has a limiting hole in the direction from one end close to the upper tool to the opposite end. The upper tool enters the limiting hole and is connected to the upper tool.

7. The punching tool device according to claim 6, characterized in that: The punching tool device also includes a fixing part, and the tool holder is provided with a fixing channel connected to the limiting channel on the side surface between the two ends toward the inside of the tool holder, and the upper tool is provided with a matching hole corresponding to the fixing part. The fixing part passes through the fixing channel and the matching hole in sequence from the outside of the upper tool to fix the tool holder and the upper tool.

8. The punching tool device according to claim 7, characterized in that: The hardness of the contact portion between the tool holder and the fixing member and the upper tool is lower than that of the upper tool.

9. The punching tool device according to claim 1, characterized in that: The punching tool device includes one or more upper tools and a lower tool matched with the upper tools.

10. The punching tool device according to claim 3, characterized in that: The upper cutter has an end near the lower cutter with a hollow escape groove in the middle of the guide portion, and the escape groove penetrates the middle of the guide surface and the end surface of the upper cutter near the lower cutter to form two connected openings.

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