Blade shortcut die

Abstract

The blade shortcut die comprises a die handle, an upper die plate, a lower die plate, a female die assembly and a male die assembly, the female die assembly and the male die assembly are located between the upper die plate and the lower die plate, the female die assembly is arranged on the inner side, close to the upper die plate, of the lower die plate, the male die assembly is arranged on the inner side, close to the lower die plate, of the upper die plate, and the female die assembly is matched with the male die assembly; the female die assembly and the male die assembly are sequentially divided into five parts according to the working procedure requirements of the impeller blade of the range hood, and the five parts comprise a fillet blanking part, a trimming and punching part, a trimming part, a bending forming part and a blanking part. The multi-process stamping die can complete a plurality of processes in one stamping process, so that the production efficiency is greatly improved. The design and manufacturing precision of the die is high, and the size and shape precision of the impeller blade can be ensured. Products manufactured by the die have the characteristics of good consistency and strong interchangeability, and can meet the requirements of large-scale production.

Description

Technical Field

[0001] The utility model belongs to the technical field of range hood impeller blade processing and relates to a blade shortcut die, in particular to a range hood impeller blade multi-process stamping die. Background Art

[0002] A range hood is a kitchen appliance that purifies the kitchen environment. It can extract stove combustion waste and cooking fumes and discharge them to the outdoors, purifying the kitchen air and providing protection for the health of users.

[0003] In the prior art, a range hood generally includes a housing, an air duct, an impeller, and a motor, etc. A single range hood impeller includes a large number of blades. The conventional range hood impeller blade manufacturing method generally adopts machining or casting processes. Although these methods can realize the manufacture of impellers, they have problems such as low production efficiency, low material utilization rate, and high cost. In addition, the accuracy and consistency of the impeller blades manufactured by the conventional method are difficult to guarantee, and cannot meet the requirements of modern range hoods for high performance and high stability.

[0004] With the continuous advancement of stamping technology, its application in the manufacturing field is becoming more and more extensive. Stamping technology has the advantages of high production efficiency, high material utilization, and high product precision. Especially when manufacturing thin sheet metal parts, stamping technology can achieve efficient and precise processing.

[0005] Multi-process stamping dies are an advanced form of stamping technology. They can complete multiple processes in one stamping process, such as punching, trimming, and forming. This type of die not only improves production efficiency, but also reduces manufacturing costs. For parts such as range hood impeller blades that have complex shapes and high precision requirements, the application of multi-process stamping dies is particularly important.

[0006] With the continuous development of the range hood market and the improvement of consumers' requirements for product quality, the application prospects of multi-process stamping dies for range hood impeller blades are very broad. In the future, this kind of mold will play an increasingly important role in the range hood manufacturing field, promoting the technological progress and industrial upgrading of the range hood industry.

[0007] At present, the impeller blades of range hoods need to go through five stamping processes to complete the processing. The required site area, logistics turnover, equipment occupation and personnel investment are all too high and large, and the production capacity is seriously insufficient while the energy consumption is high. Summary of the invention

[0008] In view of the deficiencies in the prior art, the utility model proposes a blade shortcut die, which can complete multiple processes in one stamping process, thereby greatly improving production efficiency.

[0009] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0010] The blade shortcut die comprises a die handle, an upper die plate and a lower die plate, and a die assembly and a punch assembly located between the upper and lower die plates, wherein the die assembly is arranged on the inner side of the lower die plate close to the upper die plate, and the punch assembly is arranged on the inner side of the upper die plate close to the lower die plate, and the die assembly and the punch assembly cooperate with each other; the die assembly and the punch assembly are divided into five parts in sequence according to the process requirements of the range hood impeller blade, including a fillet blanking part, a trimming and punching part, a trimming part, a bending and forming part, and a blanking part.

[0011] The concave die assembly comprises a concave die fixing plate and a concave die, wherein the concave die fixing plate is arranged on the inner wall of the lower die plate, and the concave die is arranged on the upper side of the concave die fixing plate;

[0012] The punch assembly includes a punch fixing plate, a pusher fixing plate, a pusher plate and a punch, wherein the punch fixing plate is arranged on the inner wall of the upper template, the pusher fixing plate is arranged on the lower side of the punch fixing plate, the pusher plate is arranged on the lower side of the pusher fixing plate, the punch is arranged on the lower side of the punch fixing plate, and the punch passes through the pusher fixing plate and the pusher plate to be stamped with the corresponding die.

[0013] The punch is divided into five parts according to the process, including a fillet blanking part, a trimming and punching part, a trimming part, a bending forming part and a blanking part. The fillet blanking part includes a fillet punch, through which the fillet punch is used to punch the fillet part of the blade; the trimming and punching part includes a first punch and a punch needle, through which the left side of the blade is trimmed, and the left side of the blade is punched by the punch needle; the trimming part includes a second punch, through which the right side of the blade is trimmed; the bending forming part includes a first bending punch and a second bending punch, the first bending punch is used to perform the first bending on the trimming parts on both sides of the blade, so that the trimming parts are preliminarily bent downward; the second bending punch is used to perform the second bending on the trimming parts on both sides of the blade, so that the blade is bent 119 degrees as a whole; the blanking part includes a first cutter and a second cutter, and the first cutter and the second cutter are used to complete the punching and cutting of the two ends of the blade; the die and the punch cooperate to complete the five-step process;

[0014] The die is provided with a push pin and a steel plate pad. The push pin is provided with an annular groove for fixing the steel plate and limiting the position of the steel plate. The steel plate pad is provided on the steel plate transmission path. The push pin and the steel plate pad are provided with springs at the bottom. When the push plate is pressed down, the steel plate pad can shrink to be flush with the upper surface of the die, and the annular groove of the push pin is flush with the upper surface of the die. The push plate is provided with a groove that matches the push pin.

[0015] In one of the embodiments, the blade shortcut mold also includes a guide assembly, which includes a lower guide pin and guide sleeve arranged on the inner wall of the upper mold plate and a lower guide pin corresponding to the lower guide pin and guide sleeve and arranged on the lower mold plate. The lower guide pin includes a column body and a guide pin head. The diameter of the guide pin head is larger than that of the column body. A spring is wrapped around the part between the column body and the guide pin head. When the lower guide pin and guide sleeve are pressed down, the guide pin head can slide downward along the direction of the column body.

[0016] In one embodiment, an upper guide pin and guide sleeve are provided on the punch fixing plate, and an upper guide pin and guide sleeve are provided on the die fixing plate. The upper guide pin passes through the guide pin holes provided on the pusher fixing plate and the pusher plate and cooperates with the upper guide pin and guide sleeve.

[0017] In one embodiment, the pusher fixing plate and the punch fixing plate are connected to each other via an elastic rubber column.

[0018] In one embodiment, the push plate and the push fixing plate are connected by welding.

[0019] In one embodiment, the die and the die fixing plate are connected by welding.

[0020] In one embodiment, the die fixing plate and the lower die plate are connected by welding.

[0021] In one embodiment, the push plate and the push fixing plate are provided with punching holes that match the punch.

[0022] The beneficial effects of the utility model are as follows:

[0023] The multi-process stamping die for the impeller blades of the range hood has the following technical advantages:

[0024] 1. High efficiency: Multi-process stamping dies can complete multiple processes in one stamping process, greatly improving production efficiency.

[0025] 2. High precision: The mold is designed and manufactured with high precision, which can ensure the size and shape accuracy of the impeller blades.

[0026] 3. High consistency: The products manufactured by the mold have the characteristics of good consistency and strong interchangeability, which can meet the needs of large-scale production.

[0027] 4. Save materials: Through reasonable mold design, material waste can be minimized and material utilization can be improved.

[0028] 5. Reduce costs: The cost of mold manufacturing is relatively low, which can reduce the overall cost of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the structure of the impeller blades of the range hood;

[0030] Figure 2 This is a schematic diagram of the structure of a multi-step stamping die for the impeller blades of a range hood according to an embodiment of the utility model;

[0031] Among them, 1-upper template, 2-punch fixing plate, 3-push material fixing plate, 4-push material plate, 5-lower guide pin and guide sleeve, 6-column, 7-guide pin head, 8-die, 9-die fixing plate, 10-lower template, 11-rounded corner punch, 12-first punch, 13-second punch, 14-first bending punch, 15-second bending punch, 16-first cutting knife, 17-upper guide pin and guide sleeve, 18-upper guide pin, 19-push material needle, 20-die handle. DETAILED DESCRIPTION

[0032] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0033] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0034] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0035] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] like Figure 2 As shown, the blade shortcut mold includes a mold handle 20, an upper mold plate 1 and a lower mold plate 10, and a die assembly and a punch assembly located between the upper and lower mold plates, wherein the die assembly is arranged on the inner side of the lower mold plate 10 close to the upper mold plate 1, and the punch assembly is arranged on the inner side of the upper mold plate 1 close to the lower mold plate 10, and the die assembly and the punch assembly cooperate with each other; the die assembly and the punch assembly are divided into five parts in sequence according to the process requirements of the range hood impeller blades, including a fillet blanking part, a trimming and punching part, a trimming part, a bending and forming part, and a blanking part.

[0037] The die assembly includes a die fixing plate 9 and a die 8, wherein the die fixing plate 9 is arranged on the inner wall of the lower die plate 10, and the die 8 is arranged on the upper side of the die fixing plate 9;

[0038] The punch assembly includes a punch fixing plate 2, a pusher fixing plate 3, a pusher plate 4 and a punch. The punch fixing plate 2 is arranged on the inner wall of the upper mold plate 1, the pusher fixing plate 3 is arranged on the lower side of the punch fixing plate 2, the pusher plate 4 is arranged on the lower side of the pusher fixing plate 3, the punch is arranged on the lower side of the punch fixing plate 2, and the punch passes through the pusher fixing plate 3 and the pusher plate 4 to be stamped and matched with the corresponding die 8.

[0039] The punch is divided into five parts according to the process, including a fillet blanking part, a trimming and punching part, a trimming part, a bending forming part and a blanking part. The fillet blanking part includes a fillet punch 11, through which the fillet punch 11 is used to punch the fillet part of the blade; the trimming and punching part includes a first punch 12 and a punch needle, through which the left side of the blade is trimmed, and the left side of the blade is punched by the punch needle; the trimming part includes a second punch 13, through which the right side of the blade is trimmed; the bending forming part includes a first bending punch 14 and a second bending punch 15, the first bending punch 14 is used to perform the first bending of the trimming parts on both sides of the blade, so that the trimming parts are preliminarily bent downward; the second bending punch 15 is used to perform the second bending of the trimming parts on both sides of the blade, so that the blade is bent 119 degrees as a whole; the blanking part includes a first cutter 16 and a second cutter, through which the first cutter 16 and the second cutter complete the punching and cutting of the two ends of the blade; the die 8 cooperates with the punch to complete the five-step process;

[0040] The die 8 is provided with a push pin 19 and a steel plate pad. The push pin 19 is provided with an annular groove for fixing the steel plate and limiting the position of the steel plate. The steel plate pad is provided on the steel plate transmission path. The push pin 19 and the bottom of the steel plate pad are provided with springs. When the push plate 4 is pressed down, the steel plate pad can shrink to be flush with the upper surface of the die 8, and the annular groove of the push pin 19 is flush with the upper surface of the die 8. The push plate 4 is provided with a groove matching the push pin 19.

[0041] In one of the embodiments, the blade shortcut mold also includes a guide assembly, which includes a lower guide post and guide sleeve 5 arranged on the inner wall of the upper mold plate 1 and a lower guide post corresponding to the lower guide post and guide sleeve 5 and arranged on the lower mold plate 10. The lower guide post includes a column body 6 and a guide post head 7. The diameter of the guide post head 7 is larger than that of the column body 6. The part between the column body 6 and the guide post head 7 is wrapped with a spring. When the lower guide post and guide sleeve 5 is pressed down, the guide post head 7 can slide downward along the direction of the column body 6.

[0042] In one embodiment, an upper guide pin and guide sleeve 17 is provided on the punch fixing plate 2, and an upper guide pin 18 is provided on the die fixing plate 9. The upper guide pin 18 passes through the guide pin holes opened on the pusher fixing plate 3 and the pusher plate 4 and cooperates with the upper guide pin and guide sleeve 17.

[0043] In one embodiment, the pusher fixing plate 3 and the punch fixing plate 2 are connected to each other via an elastic rubber column.

[0044] In one embodiment, the push plate 4 and the push fixing plate are connected by welding.

[0045] In one embodiment, the die 8 and the die fixing plate 9 are connected by welding.

[0046] In one embodiment, the die fixing plate 9 and the lower die plate 10 are connected by welding.

[0047] In one embodiment, the push plate 4 and the push fixing plate are provided with punching holes matching with the punch.

[0048] In actual use, the die handle 20 of the blade shortcut die (multi-process stamping die) is connected to the active mechanism to drive the overall die to work, and the steel plate is introduced into the multi-process stamping die. The steel plate is processed in turn through the fillet punching part, the trimming and punching part, the trimming part, the bending and forming part and the blanking part. The fillet punch 11 of the fillet punching part is used to punch the fillet part of the blade; the first punch 12 of the trimming and punching part is used to trim the left side of the blade, and the left side of the blade is punched by the punch needle; the second cutter of the trimming part is used to trim the right side of the blade; the bending and forming part includes a first bending punch 14 and a second bending punch 15. The first bending punch 14 of the bending and forming part is used to bend the trimming parts on both sides of the blade for the first time, so that the trimming parts are preliminarily bent downward; then the second bending punch 15 is used to bend the trimming parts on both sides of the blade for the second time, so that the blade is bent 119 degrees as a whole; finally, the first cutter 16 and the second cutter of the blanking part are used to complete the punching and cutting of the two ends of the blade, and the processing of the range hood impeller blade is completed.

[0049] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0050] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. Blade shortcut mold, characterized in that: It includes a die handle, an upper die plate and a lower die plate, and a die assembly and a punch assembly located between the upper and lower die plates, wherein the die assembly is arranged on the inner side of the lower die plate close to the upper die plate, and the punch assembly is arranged on the inner side of the upper die plate close to the lower die plate, and the die assembly and the punch assembly cooperate with each other; the die assembly and the punch assembly are divided into five parts in sequence according to the process requirements of the range hood impeller blade, including a fillet blanking part, a trimming and punching part, a trimming part, a bending and forming part, and a blanking part; The concave die assembly comprises a concave die fixing plate and a concave die, wherein the concave die fixing plate is arranged on the inner wall of the lower die plate, and the concave die is arranged on the upper side of the concave die fixing plate; The punch assembly includes a punch fixing plate, a pusher fixing plate, a pusher plate and a punch, wherein the punch fixing plate is arranged on the inner wall of the upper template, the pusher fixing plate is arranged on the lower side of the punch fixing plate, the pusher plate is arranged on the lower side of the pusher fixing plate, the punch is arranged on the lower side of the punch fixing plate, and the punch passes through the pusher fixing plate and the pusher plate to be punched and matched with the corresponding die; The punch is divided into five parts according to the process, including a fillet blanking part, a trimming and punching part, a trimming part, a bending forming part and a blanking part. The fillet blanking part includes a fillet punch, through which the fillet punch is used to punch the fillet part of the blade; the trimming and punching part includes a first punch and a punch needle, through which the left side of the blade is trimmed, and the left side of the blade is punched by the punch needle; the trimming part includes a second punch, through which the right side of the blade is trimmed; the bending forming part includes a first bending punch and a second bending punch, the first bending punch is used to perform the first bending on the trimming parts on both sides of the blade, so that the trimming parts are preliminarily bent downward; the second bending punch is used to perform the second bending on the trimming parts on both sides of the blade, so that the blade is bent 119 degrees as a whole; the blanking part includes a first cutter and a second cutter, and the first cutter and the second cutter are used to complete the punching and cutting of the two ends of the blade; the die and the punch cooperate to complete the five-step process; The die is provided with a push needle and a steel plate pad. The push needle is provided with an annular groove for fixing the steel plate and limiting the position of the steel plate. The steel plate pad is arranged on the steel plate transmission path. The push needle and the bottom of the steel plate pad are provided with springs. When the push plate is pressed down, the steel plate pad can shrink to be flush with the upper surface of the die, and the annular groove of the push needle is flush with the upper surface of the die. The push plate is provided with a groove matching the push needle.

2. The blade shortcut mold according to claim 1, characterized in that: It also includes a guide assembly, which includes a lower guide post and guide sleeve arranged on the inner wall of the upper template and a lower guide post corresponding to the lower guide post and guide sleeve and arranged on the lower template, the lower guide post includes a column body and a guide post head, the guide post head has a larger diameter than the column body, a spring is wound around the portion between the column body and the guide post head, and the guide post head can slide downward along the direction of the column body when the lower guide post and guide sleeve are pressed downward.

3. The blade shortcut mold according to claim 2, characterized in that: The punch fixing plate is provided with an upper guide pin and guide sleeve, and the die fixing plate is provided with an upper guide pin. The upper guide pin passes through the guide pin holes provided on the pusher fixing plate and the pusher plate and cooperates with the upper guide pin and guide sleeve.

4. The blade shortcut mold according to claim 1, characterized in that: The pusher fixing plate and the punch fixing plate are connected to each other via an elastic rubber column.

5. The blade shortcut mold according to claim 1, characterized in that: The push plate and the push fixing plate are connected by welding.

6. The blade shortcut mold according to claim 1, characterized in that: The concave die and the concave die fixing plate are connected by welding.

7. The blade shortcut mold according to claim 1, characterized in that: The concave mold fixing plate and the lower mold plate are connected by welding.

8. The blade shortcut mold according to claim 1, characterized in that: The push plate and the push fixing plate are provided with punching holes matched with the punch.

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