CN204747277U - Processing valve rocker blanking, compound die punches a hole - Google Patents

Abstract

The utility model discloses a processing valve rocker blanking, compound die punches a hole, be located including last mould subtotal go up the lower mould part of mould part below, it includes upper die base (13) and installs die shank (15) on upper die base (13) to go up the mould part, the lower mould part is including die holder (1), a serial communication port, it still includes upper padding plate (12), punch plate (10), blanking die (8) and punches a hole terrace die (14) etc. To go up the mould part, the lower mould part still includes protruding matrix plate (4), lower bolster (3), punch -die (6), stripper (7), the screw of unloading (2) and india rubber (5) etc. The utility model discloses processing valve rocker blanking, compound die punches a hole has the advantage that the stock layout is reasonable, compact structure is reasonable, can improve the work piece material the utilization ratio, process out the blanking spare of better quality, more be applicable to the blanking finished piece that the production lot is big, the required precision is high.

Description

Blanking and punching compound mold for processing valve rocker arm

technical field

The utility model belongs to the field of production and processing tools for valve rocker arms, in particular to a blanking and punching composite mold for processing valve rocker arms.

Background technique

The valve rocker arm is used in a general engine to cooperate with the camshaft to open the intake valve and exhaust valve, so as to complete the operation of sucking air into the cylinder and discharging the gas after combustion in the cylinder. At present, the valve rocker arm in the general engine is mainly produced and processed through the stamping process. Among them, the stamping process is to use the mold to apply pressure or tension to the sheet on the stamping equipment, so that the sheet is separated or deformed, so as to obtain a blanked part with a certain shape, size and performance.

The existing process is to first punch out the waist-shaped hole once, and use it as a positioning hole in the subsequent processing, but the workpiece will move, which affects the accuracy of the subsequent processing; and the layout is manual layout, and the material utilization of the workpiece is not the optimal solution.

Based on this, the applicant considers designing a blanking and punching composite die that can improve the quality of the processed valve rocker arm.

Utility model content

Aiming at the deficiencies of the above-mentioned prior art, the technical problem to be solved by the utility model is: how to provide a blanking and punching compound mold for processing the valve rocker arm, and improve its flatness by improving the flatness of the processed valve rocker arm. quality.

In order to solve the above technical problems, the utility model adopts the following technical solutions:

A blanking and punching composite mold for processing valve rocker arms, including an upper mold part and a lower mold part located below the upper mold part; the upper mold part includes an upper mold base and a mold handle installed on the upper mold base; The lower mold part includes a lower mold base; the upper mold part also includes an upper backing plate, a punch fixing plate, a blanking die and a punching punch; wherein,

The upper backing plate, the punch fixing plate and the blanking die are sequentially stacked from top to bottom and fixedly connected to the lower surface of the upper die base by cylindrical pins and screws;

The middle part of the blanking die has a hole whose cross section is consistent with the shape and size of the valve rocker arm and is used for blanking processing;

The upper end of the punching punch is fixed on the punch fixing plate, and the lower end passes through the hole in the middle of the blanking die and is used for punching;

The lower mold part also includes a convex and concave mold fixing plate, a lower backing plate, a convex and concave mold, a stripping plate, a stripping screw and an elastic rubber; wherein,

After the lower backing plate is provided under the convex-concave die fixing plate, it is fixedly connected to the upper surface of the lower mold base by cylindrical pins and screws;

The punch and die is cylindrical as a whole, its upper end is facing the hole in the middle of the blanking die, and its lower end is fixedly mounted on the punch and die fixing plate; The cross-section is consistent with the shape and size of the valve rocker arm, and is used to cooperate with the hole in the middle of the blanking die to realize blanking processing; the upper surface of the punch and die also has a vertical hole corresponding to the lower end of the punching punch , realize punching processing;

The unloading plate as a whole is vertically slidably sleeved on the side wall of the male and female dies, and is connected to the upper end of the unloading screw through threads, and the middle part of the unloading screw is slidable from top to bottom. Through the fixed plate of the convex and concave die, the lower backing plate and the lower mold base, the lower end of the discharge screw has a screw head limited in the countersink hole vertically arranged on the lower mold base;

The elastic rubber is integrally abutted between the lower surface of the unloading plate and the upper surface of the male and female die fixing plate, and is sleeved on the unloading screw to form a limit position.

When the blanking and punching composite mold for processing the valve rocker arm of the utility model is in use, the elastic unloading device composed of the unloading plate, the unloading screw and the elastic rubber can not only unload when the blanking is completed, but also It acts as a binder during the punching process, so that the punched parts obtained by punching have higher flatness and better quality.

As an improvement, the upper mold part also includes a pusher block, a connecting push rod, a push plate and a driving rod; wherein, the cross section of the pusher block is consistent with the shape and size of the valve rocker arm, and can slide vertically as a whole It is arranged in the hole in the middle part of the blanking die, and the middle part of the pusher block also has a through hole for the punching punch to pass through;

The lower end of the connecting push rod is fixedly connected with the pusher block, the middle part vertically slides through the upper backing plate and the punch fixing plate, and the upper end is movably arranged between the mold handle and the upper backing plate. The push plates in the enclosed inner cavity are fixedly connected; the middle part of the mold handle is also provided with a vertical bar-shaped hole communicating with the inner cavity, and the hitting rod is slidably inserted through the bar-shaped hole , the lower end of which is fixedly connected with the push plate.

After the above improvements are implemented, when the blanking piece is stuck in the hole in the middle of the blanking die, the blanking piece can be quickly pushed out through the push piece device composed of the push piece block, the connecting push rod, the push plate and the driving rod. , improve the processing efficiency of the mold.

As an improvement, the lower mold part also includes a fixed guide pin and a movable stop pin for controlling the positioning and feeding step of the strip; wherein,

The fixed guide pins are two stepped shafts that are spaced apart and protrude and are fixedly installed on the discharge plate. The two fixed guide pins are all located on the same side of the strip feeding direction and form the strip positioning of the side structure; the blanking die has a hole for the fixed guide pin to fall into;

The movable stopper pin can vertically slide through the discharge plate, and the upper end of the movable stopper pin protrudes upwards and can resist the edge of the hole formed by blanking on the strip, and the lower end is in contact with the strip. Compression springs are arranged between the fixed plates of the convex and concave dies.

After implementing the above improvement, two fixed guide pins are used to feed the material, so that the strip is guided to one side and not be fed off. This method is simple and easy to operate, and simplifies the difficulty of mold manufacturing. A movable stopper pin is adopted, the upper end of which can resist the edge of the hole formed by blanking on the strip and position the strip, and then perform punching processing again. It can be seen that the use of movable stop pins can accurately control the feeding step distance of the strip (one feeding step can process one blanking part), which is beneficial to realize high-speed feeding and automatic control.

As an improvement, a vertically downward guide sleeve is provided on the peripheral position of the lower surface of the upper die base; a vertically upwardly arranged guide post is provided on the peripheral position of the upper surface of the lower die base; the guide post is slidably Inserts into the guide sleeve and forms a snug fit.

After the above improvements are implemented, the upper mold base maintains a required positional relationship with the lower mold base through the cooperation of the guide post and the guide sleeve, thereby better ensuring the machining accuracy of the cylinder head cover.

As an improvement, the vertical hole runs through the lower mold base and forms a channel for a row of punching waste.

After the above improvements are implemented, the punching punch can punch the cylinder head cover, and the waste residue will fall to the outside of the mold structure of the utility model through the channel for discharging the punching waste, preventing it from forming accumulation and hindering the movement of the punching punch.

The blanking and punching composite mold for processing the valve rocker arm of the utility model has the advantages of compact and reasonable structure, and can punch out blanking parts with higher flatness and better quality, and is more suitable for large production batches and high precision requirements. High punched parts.

Description of drawings

Fig. 1 is the top view of the lower die base in the blanking and punching composite mold of the utility model for processing valve rocker arms.

Fig. 2 is a sectional view of A-A in Fig. 1 .

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in further detail. Wherein, the purpose of using descriptive terms such as up, down, left, and right in the description is to help readers understand, but not to limit.

As shown in Figures 1 to 2 ("←" in the figure indicates the feeding direction of the strip), the blanking and punching composite mold for processing the valve rocker arm includes the upper mold part and the lower mold part below the upper mold part. Die part; The upper die part includes an upper die base 13 and a die handle 15 installed on the upper die base 13; the lower die part includes a lower die base 1;

The upper mold part also includes an upper backing plate 12, a punch fixing plate 10, a blanking die 8 and a punching punch 14; wherein,

The upper backing plate 12, the punch fixing plate 10 and the blanking die 8 are sequentially stacked from top to bottom and fixedly connected to the lower surface of the upper die base 13 by cylindrical pins 9 and screws 19;

The middle part of the blanking die 8 has a hole whose cross section is consistent with the shape and size of the valve rocker arm and is used for blanking processing;

The upper end of the punching punch 14 is fixed on the punch fixing plate 10, and its lower end runs through the hole in the middle of the blanking die 8 and is used for punching;

The lower mold part also includes a male and female die fixing plate 4, a lower backing plate 3, a male and female die 6, a discharge plate 7, a discharge screw 2 and an elastic rubber 5; wherein,

After the lower backing plate 3 is provided under the convex and concave die fixing plate 4, it is fixedly connected to the upper surface of the lower mold base 1 by cylindrical pins and screws 24;

The convex and concave mold 6 is cylindrical as a whole, and its upper end is facing the hole in the middle part of the blanking concave mold 8, and the lower end is fixedly installed on the convex and concave mold fixing plate 4 and the lower backing plate 3; Because the cross-section of the convex and concave mold fixing plate 4 is consistent with the shape and size of the valve rocker arm, it is used to cooperate with the hole in the middle of the blanking die 8 to realize blanking processing; the upper surface of the convex and concave mold 6 is also There is a vertical hole corresponding to the lower end of the punching die to realize the punching process;

The whole unloading plate 7 is vertically slidably sleeved on the side wall of the convex and concave mold 6, and is connected with the upper end of the unloading screw 2 through threads, and the middle part of the unloading screw 2 is from top to bottom. The lower part slidably passes through the fixed plate 4 of the male and female die, the lower backing plate 3 and the lower mold base 1, and the lower end of the discharge screw 2 has a counterbore that is limited to be vertically arranged on the lower mold base 1. screw head;

The elastic rubber 5 is integrally abutted between the lower surface of the unloading plate 7 and the upper surface of the male and female die fixing plate 4 , and is sleeved on the unloading screw 2 to form a stop.

During specific implementation, the mold handle 15 is used to connect with the power mechanism, preferably the mold handle 15 is positioned with the upper mold base 13 through the vertical counterbore provided on the lower surface of the upper mold base 13 . Described elastic rubber 5 also can adopt compression spring to replace and use.

Wherein, the upper mold part also includes a pusher block 11, a connecting push rod 18, a push plate 17 and a driving rod 16; wherein, the cross section of the pusher block 11 is consistent with the shape and size of the rocker arm of the valve, and is integrated as a whole. It is vertically slidably arranged in the hole in the middle part of the blanking die 8, and the middle part of the push block 11 also has a through hole for the punching punch 14 to pass through;

The lower end of the connecting push rod 18 is fixedly connected with the pusher block 11, and the middle part vertically slides through the upper backing plate 12 and the punch fixing plate 10, and the upper end is movably arranged between the mold handle 15 and the punch fixing plate 10. The push plate 17 in the inner cavity surrounded by the upper backing plate 12 is fixedly connected; the middle part of the mold handle 15 is also provided with a vertical strip-shaped hole communicating with the inner cavity, and the punching rod can slide through It is arranged in the strip-shaped hole, and its lower end is fixedly connected with the push plate 17 .

During specific implementation, preferably, the connecting push rod 18 is connected to the push block 11 through a countersunk screw. Preferably, the connecting push rods 18 are two stepped shafts located on both sides of the punching punch 14 . In this way, not only is there a stronger connection between the lower end of the connecting push rod 18 and the push block 11, but also the thrust generated by the striking rod 16 can be more accurately and evenly transmitted to the push block 11 to push out the punching. At the same time, it can also ensure a higher flatness on the surface of the punched part.

Wherein, the lower mold part also includes a fixed guide pin 25 and a movable stop pin 21 for controlling the positioning of the strip and the feeding step; wherein,

The fixed material guide pins 25 are two stepped shafts that are spaced apart and protrude and are fixedly installed on the discharge plate 7. The two fixed material guide pins 25 are all located on the same side of the strip feeding direction and form the side of the side. Strip positioning structure; the blanking die has a hole for the fixed guide pin 25 to fall into;

The movable stopper pin 21 can vertically slide through the discharge plate 7, and the upper end of the movable stopper pin 21 protrudes upwards and can resist the edge of the hole formed by blanking on the strip, A compression spring is arranged between the lower end and the fixed plate 4 of the male and female dies.

Wherein, the lower surface peripheral position of the upper mold base 13 is provided with a vertically downward guide sleeve 22; the upper surface peripheral position of the lower mold base 1 is provided with a vertically upwardly arranged guide post 23; the guide post 23 is slidably inserted into the guide sleeve 22 and forms a sliding fit structure.

Wherein, the vertical hole runs through the lower mold base 1 and forms a channel for a row of punching waste.

When the above-mentioned blanking and punching composite mold for processing the valve rocker arm is in use, the strip material is first placed on the unloading plate, and the positioning and feeding step are controlled by the fixed guide pin and the movable stop pin. Then the upper mold base goes down, the blanking die and the punch and die complete the blanking, and the punching punch and the punch and die complete the punching. After the stamping process is completed, the upper die goes up, and the unloading plate unloads the strip from the convex and concave die under the action of the rubber and the unloading screw; The material is pushed out in the die. In the specific implementation, the dynaform software can also be used for nesting, and the optimal nesting scheme can be found from it, which can further improve the utilization rate of strips.

The above are only the preferred embodiments of the present utility model. It should be pointed out that those skilled in the art can also make some deformations and improvements without departing from the technical solution. The above-mentioned deformations and improved technical solutions should be regarded as falling Into the scope of protection claimed by this application.

Claims (5)

1. The blanking and punching compound die for processing the valve rocker comprises an upper die part and a lower die part positioned below the upper die part; the upper die part comprises an upper die base (13) and a die handle (15) arranged on the upper die base (13); the lower die part comprises a lower die base (1); it is characterized in that the preparation method is characterized in that,

the upper die part also comprises an upper backing plate (12), a punch fixing plate (10), a blanking female die (8) and a punching male die (14); wherein,

the upper padding plate (12), the punch fixing plate (10) and the blanking female die (8) are sequentially stacked from top to bottom and fixedly connected to the lower surface of the upper die base (13) through a cylindrical pin (9) and a screw (19);

the middle part of the blanking female die (8) is provided with a hole with the cross section consistent with the shape and size of the valve rocker and is used for blanking;

the upper end of the punching male die (14) is fixed on the male die fixing plate (10), and the lower end of the punching male die penetrates through a hole in the middle of the blanking female die (8) and is used for punching;

the lower die part also comprises a punch-die fixing plate (4), a lower backing plate (3), a punch-die (6), a stripper plate (7), a stripper screw (2) and an elastic rubber (5); wherein,

the lower padding plate (3) is padded below the punch-die fixing plate (4) and then is fixedly connected to the upper surface of the lower die holder (1) through a cylindrical pin and a screw (24);

the male die and the female die (6) are integrally cylindrical, the upper ends of the male die and the female die are opposite to the holes in the middle of the blanking female die (8), and the lower ends of the male die and the female die are fixedly arranged on the male die and the female die fixing plate (4) and the lower backing plate (3); the cross section of the part of the convex-concave die (6) protruding out of the convex-concave die fixing plate (4) is consistent with the shape and size of the valve rocker arm, and is used for being matched with a hole in the middle of the blanking concave die (8) to realize blanking processing; the upper surface of the punch-die (6) is also provided with a vertical hole corresponding to the lower end of the punching male die (14) to realize punching processing;

the discharging plate (7) is integrally sleeved on the side wall of the punch-die (6) in a vertically slidable manner and is connected with the upper end of the discharging screw (2) through threads, the middle part of the discharging screw (2) slidably penetrates through the punch-die fixing plate (4), the lower base plate (3) and the lower die holder (1) from top to bottom, and the lower end of the discharging screw (2) is provided with a screw head limited in a vertically arranged countersunk hole in the lower die holder 1;

the elastic rubber (5) is integrally abutted between the lower surface of the discharging plate (7) and the upper surface of the punch-die fixing plate (4) and sleeved on the discharging screw (2) to form limiting.

2. The blanking and punching compound die for machining the valve rocker according to claim 1, wherein the upper die part further comprises a pushing piece block (11), a connecting push rod (18), a push plate (17) and a striking rod (16); the cross section of the push piece block (11) is consistent with the shape and size of the valve rocker, the push piece block is integrally and vertically slidably arranged in a hole in the middle of the blanking female die (8), and the middle of the push piece block (11) is also provided with a through hole for the punching male die (14) to penetrate through;

the lower end of the connecting push rod (18) is fixedly connected with the ejector block (11), the middle part of the connecting push rod vertically and slidably penetrates through the upper backing plate (12) and the male die fixing plate (10), and the upper end of the connecting push rod is fixedly connected with a push plate (17) movably arranged in an inner cavity defined by the die handle (15) and the upper backing plate (12); the middle part of the die handle (15) is also provided with a vertical strip-shaped hole communicated with the inner cavity, the knock rod (16) can be arranged in the strip-shaped hole in a penetrating way, and the lower end of the knock rod is fixedly connected with the push plate (17).

3. The blanking and punching compound die for processing the valve rocker according to the claim 1 or 2, characterized in that the lower die part further comprises a fixed material guide pin (25) and a movable material stop pin (21) for controlling the positioning and feeding step of the strip; wherein,

the fixed material guide pins (25) are two stepped shafts which are separated and are fixedly installed on the discharging plate (7) in a protruding mode, and the two fixed material guide pins (25) are located on the same side face of the strip feeding direction and form a strip positioning structure of the side face; the blanking female die is provided with a hole for the fixed material guiding pin (25) to fall into;

the movable material blocking pin (21) can vertically and slidably penetrate through the discharging plate (7), the upper end of the movable material blocking pin (21) protrudes upwards and can be abutted against the edge of a hole formed by blanking on the strip material, and a compression spring is abutted between the lower end of the movable material blocking pin and the punch-die fixing plate (4).

4. The blanking and punching compound die for machining the valve rocker according to claim 1 or 2, characterized in that a guide sleeve (22) which is vertically downward is arranged at the periphery of the lower surface of the upper die holder (13); a guide post (23) which is vertically and upwardly arranged is arranged at the peripheral position of the upper surface of the lower die holder (1); the guide post (23) is slidably inserted into the guide sleeve (22) to form a sliding fit structure.

5. The blanking and punching compound die for machining the valve rocker according to the claim 1 or 2, characterized in that the vertical hole penetrates through the lower die seat (1) and forms a channel for discharging punching waste.