Forging and trimming composite die

Abstract

The utility model relates to the field of forging and trimming dies, in particular to a forging and trimming composite die. The composite die comprises an upper die base, a lower die base, a trimming die base, a carrier plate and a punching punch assembly. The punching punch assembly comprises a punch base and a punch which are designed in a split mode. A mounting inner hole is formed in the punch base, and a first pin hole groove penetrating through the mounting inner hole in the radial direction is formed in the punch base; one end of the punch is inserted into the mounting inner hole of the punch base, and a second pin hole groove in the radial direction is formed in the periphery of the end, inserted into the mounting inner hole, of the punch; when the punch is inserted into the mounting inner hole, the first pin hole groove and the second pin hole groove form a fixed pin hole; and fixing pins are inserted into the fixing pin holes. According to the composite die, due to the split type design of the punch assembly and the fixing mode of the side fixing pin to the punch and the punch base, good tensile strength is ensured, and disassembly is convenient.

Description

TECHNICAL FIELD

[0001] The application relates to the field of forging trimming dies, in particular to a forging trimming composite die. BACKGROUND

[0002] In the field of mechanical manufacturing, the forged workpiece parts formed by forging production have excess flash and skin, which need to be removed through trimming and punching processing by a composite die; the punch assembly in the existing composite die is generally designed in an integral mode, and the replacement cost of the die material is high; there are also split-type punch assemblies, such as the upper die seat structure of a pull rod type trimming composite die disclosed in Chinese patent CN202278137U; most of the current composite dies adopt bolts to fix the punch and the base, and the blank basically falls near the punch during blanking, and the distance to the bolt position is close; after continuous work of the die, the temperature of the bolt is increased, the tensile strength is reduced, and the bolt may be pulled off; in addition, when the die is replaced, all the fixing bolts need to be loosened, and since the space for the wrench to move in the lower die seat is limited, the replacement is not convenient. CONTENT OF THE UTILITY MODEL

[0003] The application provides a forging trimming composite die, which solves the problem of inconvenient disassembly of the punch in the background art and can be applied to trimming and punching processing of workpiece parts of different heights, small batches and high frequencies.

[0004] To achieve the above object, the application provides the following technical scheme:

[0005] A forging trimming composite die, comprising an upper die seat, a lower die seat, a trimming die seat, a carrier plate and a punching punch assembly; characterized in that the punching punch assembly comprises a split-type punch base and a punch.

[0006] The punch base is provided with a mounting inner hole, and the punch base is provided with a first pin hole groove in the radial direction passing through the mounting inner hole; one end of the punch is inserted and mounted in the mounting inner hole of the punch base, and the outer periphery of the punch inserted into one end of the mounting inner hole is provided with a second pin hole groove in the radial direction; in the state that the punch is inserted and mounted in the mounting inner hole, the first pin hole groove and the second pin hole groove form a fixed pin hole; and a fixed pin is inserted into the fixed pin hole.

[0007] Further, the trimming die seat and the lower die seat are connected through a stand column, and the carrier plate has a through hole through which the punching assembly passes; the carrier plate is arranged between the lower die seat and the trimming die seat, and a traction chain is arranged on the carrier plate and connected with the upper die seat.

[0008] Further, a guide column passing through the carrier plate is arranged between the trimming die seat and the lower die seat.

[0009] Further, the forging trimming compound die of the present application further comprises a plurality of carrier plate pads, which are arranged on the lower die seat in a circumferential distribution along the punch base mounting position, and are used for limiting the downward position of the carrier plate and supporting the impact of the blank during the forging blank falling.

[0010] Further, a material lifting pad is arranged on the carrier plate near the through hole, and the lower end surface of the forging blank is in contact with the upper end surface of the material lifting pad during the trimming of the forging blank.

[0011] Further, the bottom of the upper die seat is provided with a pressing block assembly, which comprises a pressing block fixed plate and a pressing block.

[0012] Further, the upper die seat is further provided with a limiting column, which is located outside the pressing block assembly mounting position, and the bottom end of the limiting column is used to contact the top of the trimming die seat after the lower pressing of the upper die seat, so as to limit the lower pressing position of the upper die seat.

[0013] Further, the forging trimming compound die of the present application further comprises a blank receiving disc for replacing the punch assembly, which is installed on the through hole of the carrier plate.

[0014] Further, the forging trimming compound die of the present application further comprises a pressing plate for replacing the pressing block assembly, which is connected to the bottom of the upper die seat.

[0015] Beneficial effects:

[0016] The application provides a forging trimming composite die, which comprises an upper die base, a lower die base, a trimming die base, a carrier plate and a punching punch assembly; the punching punch assembly comprises a split punch base and a punch; the punch base is provided with a mounting inner hole, and the punch base is provided with a first pin hole groove in a radial direction and penetrating through the mounting inner hole; one end of the punch is inserted into the mounting inner hole of the punch base, and the outer periphery of the punch inserted into one end of the mounting inner hole is provided with a second pin hole groove in a radial direction; in the state that the punch is inserted into the mounting inner hole, the first pin hole groove and the second pin hole groove form a fixed pin hole; and a fixed pin is inserted into the fixed pin hole. The split design of the punch assembly in the composite die and the fixing mode of the side fixed pin to the punch and the punch base ensure good tensile strength and facilitate disassembly. In addition, compared with a pull rod type material taking, the chain lifting material taking of the application can be adapted to the processing of parts with a wider height size range and is not easily limited by the length size of the lifting mechanism. The limiting column arranged in the die can guarantee the stability and non-deviation of the carrier plate during up-down movement, thereby effectively reducing the situation that the forging blank is subjected to excessive tension when being withdrawn from the trimming die due to the different centers of the forging blank and the trimming die. Meanwhile, the die is provided with a carrier plate pad block which can be quickly replaced and installed, the pad block can bear the blanking impact of the trimmed forging blank and prevent the carrier plate from being deformed. Moreover, according to different sizes of parts, the height of the pad block can be replaced and adjusted to obtain different blanking positioning sizes. In addition, the die is provided with a material ejecting pad block which can be quickly replaced and installed, the pad block can bear the direct blanking impact of the trimmed forging blank, and according to different sizes of parts, the height of the material ejecting pad block can be replaced and adjusted to obtain different positioning sizes of the trimmed forging blank when entering the die, and meanwhile, the material ejecting pad block can prevent the small-specification part from impacting the upper end face of the punch base during trimming blanking. The composite die has good universality, and for the same type of parts with different specifications, the height of the carrier plate pad block and the material ejecting pad block only needs to be adjusted to complete the adaptation of the die base. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only show some embodiments of the application, and for those skilled in the art, other drawings can also be obtained from these drawings without any creative effort.

[0018] Figure 1 It is a structure schematic view of a forging trimming composite die according to the application from one perspective;

[0019] Figure 2 It is a structure schematic view of a forging trimming composite die according to the application from another perspective;

[0020] Figure 3 It is Figure 1The sectional structure diagram of the compound die (the focus is on the sectional structure of the lower die seat);

[0021] Figure 4 The sectional structure diagram of the compound die (the focus is on the sectional structure of the lower die seat);

[0022] Figure 5 The sectional structure diagram of the compound die (the focus is on the sectional structure of the lower die seat); Figure 1 The sectional structure diagram of the compound die (the focus is on the sectional structure of the lower die seat);

[0023] Figure 6 The sectional structure diagram of the compound die (the focus is on the sectional structure of the lower die seat); Figure 1 The sectional structure diagram of the compound die (the focus is on the sectional structure of the lower die seat);

[0024] Figure 7 The sectional structure diagram of the compound die (the focus is on the sectional structure of the lower die seat); Figure 5 The sectional structure diagram of the compound die (the focus is on the sectional structure of the lower die seat);

[0025] Figure 8 The sectional structure diagram of the compound die (the focus is on the sectional structure of the lower die seat);

[0026] Wherein, 1, the upper die seat, 2, the pressing block fixed plate, 3, the pressing block, 4, the limiting column, 5, the trimming die, 6, the trimming die seat, 7, the vertical column, 8, the traction chain, 9, the chain fixed seat, 10, the material lifting pad, 11, the carrier plate pad, 12, the lower die seat, 13, the punch base, 14, the fixed pin, 15, the carrier plate, 16, the guide column, 17, the punch. DETAILED DESCRIPTION

[0027] In order to make the technical personnel in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0028] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly disposed on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0029] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate directions or positions based on the directions or positions shown in the drawings, and are used only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0030] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of", "several" is two or more, unless otherwise explicitly specified.

[0031] It should be understood that the structures, proportions, sizes and the like shown in the drawings of the present application are only used to cooperate with the content disclosed in the description, to enable those skilled in the art to understand and read, and do not have technical significance to limit the conditions that can be implemented by the present application. Any modification of structure, change of proportion relationship or adjustment of size, which does not affect the effect and purpose that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application.

[0032] The embodiments of the present application are written in a progressive manner.

[0033] Please refer to Figures 1-7 The utility model provides a kind of forging trimming composite die, including upper die holder, lower die holder, trimming die holder, carrier plate and punch assembly;Its characterized in that, the punch assembly includes the punch base and punch of split design;

[0034] The punch base is provided with a mounting bore, and the punch base is provided with a first pin hole groove passing through the mounting bore in the radial direction;The punch is inserted and mounted in the mounting bore of the punch base, and the outer periphery of the punch inserted in one end of the mounting bore is provided with a second pin hole groove in the radial direction;When the punch is inserted and mounted in the mounting bore, the first pin hole groove and the second pin hole groove form a fixed pin hole;A fixed pin is inserted into the fixed pin hole.

[0035] In the above-mentioned scheme, the punch assembly of the composite die is designed in a split manner, and the side fixed pin fixes the punch and the punch base in a manner that ensures good tensile strength and facilitates disassembly and replacement of different punches.

[0036] The trimming die holder has a trimming die for trimming the flash of the forging blank.

[0037] Further, the trimming die seat is connected with the lower die seat through a stand column, and the carrier plate has a through hole through which a punching assembly passes; the carrier plate is arranged between the lower die seat and the trimming die seat, and a traction chain is arranged on the carrier plate and connected with the upper die seat. Compared with the existing pull rod type material taking, the chain lifting material taking of the present application can adapt to a wider range of height dimensions of parts processing, and is not easily limited by the length dimension of the lifting mechanism.

[0038] Further, a guide column is arranged between the trimming die seat and the lower die seat and passes through the carrier plate; the carrier plate is effectively ensured to be stable and not deviated during upward and downward movement, thereby reducing the situation that the pulling force is too large when the forging blank exits the trimming die due to the different centers of the forging blank and the trimming die.

[0039] Further, the forging and trimming combined die of the present application further comprises a plurality of carrier plate pads, which are arranged on the lower die seat in a circumferential distribution along the punch base mounting position, and are used for limiting the downward position of the carrier plate and supporting and receiving the impact of the blanking of the forging blank. The carrier plate pad is provided with a quick release structure and is mounted on the lower die seat, and can be quickly replaced with the lower die seat. The carrier plate pad can withstand the impact of the blanking of the forging blank after trimming, so as to prevent the deformation of the carrier plate, and can adjust the height of the carrier plate pad according to the adaptability of different sizes of parts, so as to obtain different blanking positioning sizes.

[0040] Further, a blanking pad is arranged on the carrier plate close to the through hole, and the lower end surface of the forging blank is connected with the upper end surface of the blanking pad during trimming. The blanking pad can be used for direct impact after blanking after trimming of the forging blank, and can adjust the height of the blanking pad according to the adaptability of different sizes of parts, so as to obtain different positioning sizes of the forging blank during trimming and blanking, and adjust the height of the forging blank material during entering and exiting the die. The blanking pad of the present application is preferably a hook head type blanking pad, which is shown in detail in Figure 5 and Figure 6 .

[0041] Further, the bottom of the upper die seat is provided with a pressing block assembly, and the pressing block assembly comprises a pressing block fixed plate and a pressing block. The pressing block fixed plate is connected to the bottom of the lower die seat, and the pressing block has a clamping groove fixedly matched with the pressing block fixed plate. The pressing head assembly moves downward with the upper die seat and is used for downward pressing of the forging blank.

[0042] Further, a limiting column is arranged on the upper die seat; the limiting column is located outside the pressing block assembly mounting position, and the bottom end of the limiting column is used for contacting the top of the trimming die seat after the upper die seat is pressed downward, so as to limit the downward position of the upper die seat.

[0043] It should be noted that the upper die seat of the combined die of the present application is externally connected with a lifting device providing downward pressing power for the upper die seat.

[0044] The composite die of the application is applied to a die machine tool device, the die machine tool device has a machine tool slide block capable of moving up and down along a machine tool slide rail; the machine tool slide block is connected with an upper die holder to provide a downward pressing power for the upper die holder. The composite die of the application is applied to trimming and piercing of a forging blank, which comprises:

[0045] Forging blank feeding and part taking out: the machine tool slide block drives the upper die holder to the top point of the machine tool slide block, and cooperates with the traction chain 8 to lift the carrier plate to the highest point, at this time, the forging blank to be trimmed can be put into the trimming die or the trimmed blank can be taken out.

[0046] Forging blank trimming: when the forging blank is fed, the lower end surface of the forging blank is in contact with the upper end surface of the part feeding pad 10, the machine tool slide block drives the upper die holder and the components (the pressing block, the carrier plate) to move downward, when the carrier plate 15 is in contact with the carrier plate pad 11, the carrier plate 15 stops moving downward, the machine tool slide block drives the upper die holder and the components to continue moving downward, at this time, the traction chain 8 is bent, the machine tool slide block drives the upper die holder and the components to continue moving downward, the pressing block 3 is in contact with the upper end surface of the forging blank, and drives the forging blank material to continue moving downward, the flash of the forging blank is in contact with the trimming die, the trimming is completed when the trimming die is pressed, the skin of the inner hole of the forging blank is in contact with the punch edge of the punch, the piercing operation is performed when the punch is pressed, the trimming material of the forging blank falls on the part feeding pad 10, the carrier plate pad 11 can bear the impact force of the falling forging blank, the machine tool slide block drives the upper die holder and the components to continue moving downward, when the lower end surface of the limiting column 4 is in contact with the upper end surface of the trimming die holder 6, the downward kinetic energy of the machine tool slide block is released and the trimming is completed.

[0047] Forging blank taking out: after the downward kinetic energy of the machine tool slide block is released, the machine tool slide block drives the upper die holder and the components to continue moving upward, the traction chain 8 is straightened, and the carrier plate and the forging blank part are lifted, in the upward movement process, the forging blank part passes through the guide position of the trimming die holder 5 and comes out of the trimming die, when the machine tool slide block drives the upper die holder and the components to move upward to the highest point, the trimmed forging blank is in a mold ejection state.

[0048] The main structural components of the composite die of the application include: an upper die holder 1, a pressing block fixed plate 2, a pressing block 3, a limiting column 4, a trimming die 5, a trimming die holder 6, a vertical column 7, a traction chain 8, a chain fixed seat 9, a part feeding pad 10, a carrier plate pad 11, a lower die holder 12, a punch base 13, a fixed pin 14, a carrier plate 15, a guide column 16, and a punch 17.

[0049] The split design of the punch assembly in the composite die of the present application, the fixing mode of the side fixing pin to the punch and the punch base, ensures good tensile strength and facilitates disassembly. In addition, compared with the pull rod type material taking, the chain lifting material taking of the present application can adapt to a wider range of height dimensions of parts processing, and is not easily limited by the length size of the lifting mechanism. The die is also provided with a limiting column to ensure the stability and non-deviation of the carrier plate during up and down movement, thereby effectively reducing the situation that the cutting edge die is subjected to excessive tension when withdrawing due to the eccentricity of the forging blank and the cutting edge die during material taking. At the same time, the die is also provided with a carrier plate pad block that can be quickly replaced and installed, which can withstand the impact of the blank after cutting, preventing the carrier plate from deforming. Moreover, according to different sizes of parts, the height of this pad block can be adjusted to obtain different blank positioning sizes. In addition, the die is also provided with a material lifting pad block that can be quickly replaced and installed, which can bear the direct impact of the blank after cutting, and according to different sizes of parts, the height of this material lifting block can be adjusted to obtain different positioning sizes of the blank into the die during cutting, while preventing small size parts from impacting the upper end face of the punch base during cutting. The composite die of the present application has good versatility, and for the same type but different size parts, only the height of the carrier plate pad block and the material lifting pad block needs to be adjusted to complete the adaptation of the die seat.

[0050] Referring to Figure 8 , the forging cutting composite die of the present application further comprises: a blank receiving disc for replacing the punch assembly, which is fixedly installed at the through hole position of the carrier plate. For forging blank parts that do not need to be punched and only need to be cut, the composite die of the present application can conveniently disassemble and remove the punch assembly and the material lifting block 10, and then replace the blank receiving disc on the through hole of the carrier plate to adapt to the cutting requirement of the forging blank. This design makes the change process of the forging blank production more rapid and convenient, while reducing the cost of spare parts. In addition, the forging cutting composite die of the present application further comprises: a pressing plate for replacing the pressing block assembly, which is connected to the bottom of the upper die seat. By replacing the pressing block assembly, the space for placing the forging blank between the upper die seat and the cutting edge die seat can be significantly increased, thereby facilitating the processing of relatively long forging blank parts, such as the processing of piston type forging blank parts.

[0051] The above description of disclosed embodiments enables one of ordinary skill in the art to make or use the application. Various modifications to these embodiments will be apparent to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A swage trim compound die comprising an upper die shoe, a lower die shoe, a trim die shoe, a carrier plate, and a piercing punch assembly; characterized in that, The punching punch assembly comprises a split design punch base and punch; The punch base is provided with a mounting inner hole, and the punch base is provided with a first pin hole groove in the radial direction passing through the mounting inner hole; one end of the punch is inserted and mounted in the mounting inner hole of the punch base, and the outer periphery of the punch inserted into one end of the mounting inner hole is provided with a second pin hole groove in the radial direction; in the state that the punch is inserted and mounted in the mounting inner hole, the first pin hole groove and the second pin hole groove form a fixed pin hole; a fixed pin is inserted into the fixed pin hole.

2. The swage trim compound die of claim 1, wherein, The trimming die seat is connected with the lower die seat through a stand column, and the carrier plate has a through hole through which the punching assembly passes; the carrier plate is arranged between the lower die seat and the trimming die seat, and the carrier plate is provided with a traction chain connected with the upper die seat.

3. The swage trim compound die of claim 2, wherein, A guide column is further arranged between the trimming die seat and the lower die seat and passes through the carrier plate.

4. The swage trim compound die according to any one of claims 1 to 3, wherein, A plurality of carrier plate pads are further included, which are arranged in the lower die seat in a circumferential distribution around the punch base mounting position, and the carrier plate pads are used for limiting the downward position of the carrier plate and supporting and receiving the impact of the blank when the forging blank falls.

5. The swage trim compound die of claim 4, wherein, A material lifting pad is further arranged on the carrier plate close to the through hole, and the lower end surface of the forging blank is in contact with the upper end surface of the material lifting pad when the forging blank is trimmed.

6. The trimming compound die for forging according to any one of claims 1 to 3, 5, wherein The bottom of the upper die seat is provided with a pressing block assembly, and the pressing block assembly comprises a pressing block fixed plate and a pressing block; the pressing block fixed plate is connected to the bottom of the lower die seat, and the pressing block has a clamping groove fixedly matched with the pressing block fixed plate.

7. The swage trim compound die of claim 6, wherein, A limiting column is further arranged on the upper die seat; the limiting column is located outside the pressing block assembly mounting position, and the bottom end of the limiting column is used for contacting the top of the trimming die seat after the upper die seat is pressed down, so as to limit the pressing position of the upper die seat.

8. The trimming compound die for swaging according to any one of claims 1 to 3, 5, 7, wherein Further comprising: A blanking receiving disc for replacing the punch assembly, which is mounted in the through hole of the carrier plate.

9. The trimming compound die for swaging according to any one of claims 1 to 3, 5, 7, wherein Further comprising: A pressing plate for replacing the pressing block assembly, which is connected to the bottom of the upper die seat.

10. The swage trim compound die of claim 8, wherein, Further comprising: A pressing plate for replacing the pressing block assembly, which is connected to the bottom of the upper die seat.

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