CN106424674B - A kind of hydraulic oil cylinder driving punching trimming mode structure and its punching method for cutting edge - Google Patents

Abstract

The invention discloses a kind of hydraulic oil cylinder driving punching trimming mode structure, including upper mold seat, die holder, it is separately positioned on upper mold seat, cope plate on die holder, lower template and upper mold, lower die, the upper mold periphery is equipped with the taper profiling edge of a knife, lower die is equipped with punching pin moving up and down, upper mold, lower die, which is bolted, to be separately fixed in cope plate and lower template, upper mold seat and upper mold cushion block, cope plate is bolted, die holder and lower die cushion block, lower template is bolted, drive cylinder has been bolted on die holder, drive cylinder drives punching pin to move up and down by connecting plate.The invention also discloses a kind of punching method for cutting edge using the hydraulic oil cylinder driving punching trimming mode structure.Excision product cinder ladle, runner, product blank hole inner burr can be achieved in the present invention, reduces manual labor amount, completely burr work can be replaced to work, while improves production efficiency, reduces production cost.

Description

A cylinder-driven punching and trimming die structure and punching and trimming method thereof

technical field

The invention relates to the technical field of edge trimming and deburring of blank products, in particular to an oil cylinder-driven punching and trimming die structure and a punching and trimming method thereof.

Background technique

At present, when designing die-casting or injection-molded parts, overflow systems such as slag bags and exhaust fans are installed on the castings. In order to reduce product defects and improve product strength, at the same time, the blank parts produced by casting are usually accompanied by some flashes, burrs, etc.

After the die-casting is completed, the slag and excess material will be ejected together with the casting. In order to facilitate the implementation of subsequent process steps, the slag and product burrs must be removed first. The traditional way is that the first worker uses a wooden stick to directly remove the slag and excess material on the periphery of the blank, and then the second worker removes the excess burrs in the blank, especially the burrs in the hole, with a file. The disadvantages of manual removal are: a large amount of labor for workers, low deburring precision, and low production efficiency, which is not conducive to mass production of products.

Contents of the invention

In order to solve the cumbersome problem of the existing production process, the present invention provides an oil cylinder-driven punching and trimming die structure and a punching and trimming method that can efficiently remove slag bags, runners and burrs in the holes around the product blank.

Concrete scheme of the present invention is as follows:

An oil cylinder-driven punching and trimming die structure, comprising an upper mold base, a lower mold base, an upper template, a lower template, an upper mold, and a lower mold respectively arranged on the upper mold base and the lower mold base, and the upper mold is peripherally arranged There is a tapered profiling knife edge, and the lower mold is equipped with a punching pin that can move up and down. The upper mold and the lower mold are respectively fixed on the upper mold plate and the lower mold plate through bolt connection. Bolt connection, the lower mold base is connected with the lower mold cushion block and the lower formwork by bolts, and the lower mold base is connected with a driving cylinder by bolts, and the driving cylinder drives the punching pin to move up and down through the connecting plate.

Further, the connecting plate includes a second connecting plate and a first connecting plate stacked up and down, the lower end surface of the first connecting plate is provided with a T-shaped slot for connecting the T-shaped telescopic shaft at the front end of the oil cylinder, and the first connecting plate and The second connecting plate is connected by bolts.

Further, the first connecting plate is provided with a trapezoidal groove structure for connecting punching pins, and the punching pins are fixed through the first connecting plate and the second connecting plate.

Further, the second connecting plate is provided with a counterbore for connecting punching pins.

Further, the upper formwork is vertically provided with a guide sleeve, and the lower formwork is vertically provided with a guide post that is slidably fitted with the guide sleeve.

Further, a limiting block is provided on the lower mold base.

Further, the punching pin is matched with the target hole of the product with a clearance of 0.1-0.5 mm.

A punching and trimming method using the cylinder-driven punching and trimming die structure, comprising the following steps:

1) Control the upper mold base with the upper mold and the lower mold to keep within a certain distance through the edge trimming machine control system, and at the same time drive the oil cylinder to unload the hydraulic pressure, so that the punching pin keeps returning to the state below the surface of the lower mold. At this time, the target blank The product is placed on the copying lower die, waiting for trimming and punching;

2) The upper mold seat drives the upper mold to move downward, and the tapered profiling knife edge on the outer edge of the upper mold is used to realize the removal of the peripheral slag bag of the blank and the function of the pouring system. fast and slow;

3) In order to ensure the accuracy of punching, after trimming is completed, the upper mold keeps the product in a compact state, drives the oil cylinder to load the oil, drives the punching pin to move upward, and removes the burrs in the blank hole. The stroke of the cylinder is determined by the length of the removed hole depends;

4) After the trimming and punching are completed, the hydraulic oil is unloaded, and the driving cylinder is retracted first. After the driving cylinder is retracted, the upper mold returns to the original state after a certain time delay and keeps a certain distance from the lower mold, giving a certain space for placing the blank product. At this point, the punching and edge trimming are completed, and the product can be taken out.

Further, when trimming, the upper die moves downward at a uniform deceleration of 1 m/s to 0.1 m/s.

Further, the upper die returns to its original state after a delay of 2-5 seconds and keeps a certain distance from the lower die.

Compared with the prior art, the beneficial effects of the present invention are as follows: the method of combining punching and edge trimming in the present invention can remove the peripheral slag bag and flow channel at one time for the blank produced by casting, and at the same time drive the punching pin through the oil cylinder Realize the removal process of the burr in the hole, and realize the efficient deburring effect. The invention greatly reduces the amount of physical labor, can completely replace the work of the burr worker, improves the production efficiency, and reduces the production cost.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of a punching and trimming die according to an embodiment of the present invention.

Fig. 2 is a schematic diagram of the trimming function of the embodiment of the present invention.

Fig. 3 is a schematic diagram of the punching function of the embodiment of the present invention.

Fig. 4 is a structural diagram of the lower mold of the embodiment of the present invention.

In the figure: 1, upper mold base, 2, upper template, 3, guide sleeve, 4, guide post, 5, punching pin, 6, lower template, 7, lower mold pad, 8, lower mold base, 9, Drive oil cylinder, 10, limit block, 11, the first connecting plate, 12, the second connecting plate, 13, lower mold, 14, blank product, 15, upper mold, 16 upper mold pad.

Detailed ways

The present invention will be further described below in conjunction with accompanying drawing of specification sheet and embodiment:

As shown in Figure 1-4, an oil cylinder driven punching and trimming die structure includes an upper die base 1, an upper die plate 2, an upper die 15, a lower die base 8, a lower die plate 6, a pad, a lower die 13, a guide Column 4, guide sleeve 3, limit block 10, driving cylinder 9, punching pin 5, connecting plate, upper mold base 1, lower mold base 8 and each spacer are provided with through holes, and corresponding position upper template 2, The lower template 6 is provided with threaded holes, and the bolts pass through the upper mold base 1, the lower mold base 8 and the pads to connect with the upper template 2 and the lower template 6 respectively, and the upper mold 15 and the lower mold 13 are respectively fixed on the On the upper formwork 2 and the lower formwork 6, the periphery of the upper formwork 15 is provided with a tapered profiling knife edge, and the upper formwork 2 and the lower formwork 6 are respectively provided with a guide sleeve 3 and a guide post 4. Both ends are designed to be stepped. At the same time, the upper formwork 2 and the lower formwork 6 are also provided with corresponding countersunk holes to place the guide post 4 and guide sleeve 3 in the countersink holes, and use pads to place the guide post 4 and guide The sleeve 3 is locked, the upper mold base 1 and the upper mold 15 can move up and down along the direction of the guide column 4, and the bolt on the lower mold base 8 is fixed with a drive cylinder 9, which drives the connecting plate and drives the punching pin 5 along the direction of the guide column 4 Moving up and down.

The connecting plate includes a second connecting plate 12 and a first connecting plate 11 which are stacked up and down. It is connected with the second connecting plate 12 by bolts. The first connecting plate 11 is provided with a T-shaped groove for connecting the T-shaped telescopic shaft at the front end of the drive cylinder 9, the first connecting plate 11 is connected with the second connecting plate 12 by bolts, and the punching pin 5 is fixed on the second connecting plate 12 In the countersunk hole provided inside, the first connecting plate 11 is used to lock the punching pin 5, and the punching pin is matched with the target hole of the product with a gap of 0.1-0.5 mm, preferably 0.3 mm. A limit block 10 is provided on the lower mold base 8 for the lower limit of the connecting plate.

In this embodiment, the peripheral slag bag and pouring system of the rough product are removed at one time through the tapered profiling knife edge designed on the upper mold 15, and the edge trimming is ensured by the guide sleeve 3 and the guide post 4 set on the upper mold 15 and the lower mold 13. Direction, improve trimming accuracy, use the driving cylinder 9 set on the lower mold seat 8 to drive the first connecting plate 11 and the second connecting plate 12 and the punching pin 5 to move upwards to remove the residual burr in the hole of the blank product.

As shown in Figures 2 and 3, the punching and trimming method using the cylinder-driven punching and trimming die structure includes the following steps:

1) Control the upper mold base 1 with the upper mold 15 and the lower mold 13 to keep within a certain distance through the edge trimming machine control system, and at the same time drive the oil cylinder 9 to unload the hydraulic pressure, so that the punching pin 5 keeps retreating to the state below the surface of the lower mold 13 , at this time, put the target blank product on the copying die, and wait for edge trimming and punching;

2) The upper mold base 1 drives the upper mold 15 to move downward, and the tapered profiling knife edge on the outer edge of the upper mold 15 is used to realize the removal of the slag bag around the blank and the function of the pouring system. The moving speed of the upper mold 15 is from fast to slow, 1m/ s to 0.1m/s uniform deceleration movement to prevent cutting the product;

3) In order to ensure the accuracy of the punching function, after the edge trimming is completed, the upper mold 15 keeps the product in a pressed state, drives the oil cylinder 9 to load the oil, drives the punching pin 5 to move upward, and removes the burr in the blank hole, and the stroke of the oil cylinder is controlled by the The length of the clear hole depends on;

4) After the trimming and punching are completed, the hydraulic oil is unloaded, and the driving cylinder 9 is retracted first. After the driving cylinder 9 is retracted, the upper mold 15 is delayed for 2 to 5 seconds, and then returns to the original state and keeps a certain distance from the lower mold, giving a certain place for blank products At this point, the punching and edge trimming are completed, and the product can be taken out.

The traditional production method is that after the rough product is produced, two workers are required to complete the work of slag extraction, pouring system and burr repair, which will greatly increase the labor force and production cost of the product during mass production. The first process is manual, which increases the production cycle time and reduces the production efficiency to a certain extent.

Compared with the traditional method, the feature of this embodiment is that the two processes of punching and edge trimming can be realized at the same time. In the first step, as shown in Figure 2, the upper mold 15 is separated from the lower mold 13 to keep a certain distance, and the blank product is placed on the lower mold 13. Up; in the second step, the upper mold 15 moves downward to realize the edge trimming work. After the edge trimming is completed, the upper mold 15 remains still and enters the third step, and the lower end oil cylinder drives the punching pin to move upward to realize the work of removing burrs in the hole. Punching and trimming are completed; in the fourth step, the drive cylinder 9 is first retracted, and then the upper die 15 is moved upwards to reset.

In another embodiment, a punching and trimming method using the cylinder-driven punching and trimming die structure includes the following steps:

1) Keep the upper mold 15 and the lower mold 13 at a distance of 1000 mm, drive the oil cylinder 9 to unload the hydraulic pressure, the first connecting plate 11 is above the limit block 10, and is in contact with the limit block 10, and a worker places the blank product on the bottom On the mold 13, and manually adjust the product slightly to put it right;

2) Press the start button to start the trimming machine, the control system of the trimming machine will drive the upper die 15 to move downward, the moving speed is set to the initial speed of 1m/s, and the movement is uniformly decelerated until the edge of the upper die 15 is 20mm away from the upper surface of the product The speed is reduced to 0.1m/s to ensure the trimming quality;

3) After the trimming is completed, the upper mold 15 remains in the state of pressing the product, and the driving cylinder 9 is oiled, the driving pressure is 50MPa, and the punching pin 5 is driven upward to remove the burr in the hole. The cylinder stroke is 12mm, and the product hole length is 10mm. , the punching pin is matched with the product hole clearance, and the matching clearance is 0.1mm;

4) After edge trimming and punching are completed, the hydraulic oil of the lower drive cylinder 9 is unloaded first, so that the punching pin 5 moves downward, the first connecting plate 11 falls on the limit block 10, and after a delay of 2 seconds, the upper die 15 moves upward Open the mold and reset, and wait for the second time.

The combination of punching and edge trimming in the present invention can remove the peripheral slag bag and flow channel at one time on the casting blank, and at the same time, the punching pin can be driven by the oil cylinder to realize the cleaning process of the burr in the hole, and the manual work can be replaced by the use of the punching pin. Labor improves the efficiency and precision of deburring. The invention greatly reduces the amount of manual labor, can completely replace the work of deburring workers, improves production efficiency, and reduces production costs.

The above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, rather than limiting the implementation of the present invention. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. All modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the claims of the present invention.

Claims (9)

1. A cylinder-driven punching and trimming die structure, comprising an upper mold base, an lower mold base, an upper template, a lower template, an upper mold, and a lower mold respectively arranged on the upper mold base and the lower mold base, and is characterized in that: The periphery of the upper mold is provided with a tapered profiling knife edge, and the lower mold is provided with punching pins that can move up and down. The upper mold and the lower mold are respectively fixed on the upper template and the lower template through bolt connections. The mold spacer and the upper formwork are bolted, the lower mold base is connected with the lower mold spacer and the lower formwork with bolts, and the bolts on the lower mold base are connected with a driving cylinder, which drives the punching pin to move up and down through the connecting plate; The connecting plate includes a second connecting plate and a first connecting plate superimposed up and down. The lower end surface of the first connecting plate is provided with a T-shaped groove for connecting the T-shaped telescopic shaft at the front end of the oil cylinder. The first connecting plate is connected to the second connecting plate. The plates are connected with bolts. 2. A cylinder-driven punching and trimming die structure according to claim 1, characterized in that: the first connecting plate is provided with a trapezoidal groove structure connecting punching pins, through the first connecting plate, the second The connecting plate fixes the punching pin. 3. The punching and trimming die structure driven by an oil cylinder according to claim 1, characterized in that: the second connecting plate is provided with countersunk holes for connecting punching pins. 4. A cylinder-driven punching and trimming die structure according to claim 1, characterized in that: the upper template is vertically provided with a guide sleeve, and the lower template is vertically provided with a guide column that slides and fits with the guide sleeve . 5 . The punching and trimming die structure driven by an oil cylinder according to claim 1 , wherein a limiting block is provided on the lower die base. 6 . 6 . The punching and trimming die structure driven by an oil cylinder according to claim 1 , wherein the punching pin is matched with the target hole of the product with a gap of 0.1-0.5 mm. 7. A punching and trimming method using a cylinder-driven punching and trimming die structure according to any one of claims 1 to 6, comprising the steps of: 1) Control the upper mold base with the upper mold and the lower mold to keep within a certain distance through the edge trimming machine control system, and at the same time drive the oil cylinder to unload the hydraulic pressure, so that the punching pin keeps returning to the state below the surface of the lower mold. At this time, the target blank The product is placed on the copying lower die, waiting for trimming and punching; 2) The upper mold seat drives the upper mold to move downward, and the tapered profiling knife edge on the outer edge of the upper mold is used to realize the removal of the peripheral slag bag of the blank and the function of the pouring system. fast and slow; 3) In order to ensure the accuracy of punching, after trimming is completed, the upper mold keeps the product in a compact state, drives the oil cylinder to load the oil, drives the punching pin to move upward, and removes the burrs in the blank hole. The stroke of the cylinder is determined by the length of the removed hole depends; 4) After the trimming and punching are completed, the hydraulic oil is unloaded, and the driving cylinder is retracted first. After the driving cylinder is retracted, the upper mold returns to the original state after a certain time delay and keeps a certain distance from the lower mold, giving a certain space for placing the blank product. At this point, the punching and edge trimming are completed, and the product can be taken out. 8 . The punching and trimming method according to claim 7 , characterized in that: the upper die moves downward at a uniform deceleration of 1 m/s to 0.1 m/s during edge trimming. 9. The punching and trimming method according to claim 8, characterized in that: the upper die returns to its original state after a delay of 2-5 seconds and keeps a certain distance from the lower die.