CN110624999A - One-step punching die structure for guide groove - Google Patents

Abstract

The invention discloses a one-step punching forming die structure for a guide groove, which includes an upper die and a lower die, the upper die includes an upper die base, the upper die base is provided with a pressing plate, a forming punch and The punching punch next to the punch, the working end of the punching punch is lower than the working end of the forming punch, the lower mold includes a lower mold base, the lower mold base is provided with a lower module, and the lower mold base is provided with a lower module. The module is provided with a lower knife block and an insert, and a punching hole for the punching punch to pass is arranged between the lower knife block and the insert. The insert is located below the forming punch, and the upper mold seat and A driving mechanism is arranged between the lower mold bases. During the process of punching the workpiece by the punching punch or after the punching punch completes punching the workpiece, the driving mechanism provides a descending space for the insert. The invention can realize the punching and the forming of the boss in one station, thereby improving the production beat.

Description

One-step punching die structure for guide groove

technical field

The invention relates to a mold in the field of auto parts production and research, in particular to a one-step punching forming mold structure for a guide groove.

Background technique

Guide grooves and guide rails are rolled and bent to obtain semi-finished products, and then punched to obtain finished products. Finally, the guide grooves are welded on the A-pillar, B-pillar and C-pillar, and the guide rails and brackets are welded with brackets. After loading, they are used to lift the glass. protection and guidance.

There is an assembly relationship between the guide groove and the guide rail after being installed on the car, and it needs to be connected and transitioned very smoothly, otherwise the glass will be blocked during the lifting process.

The transition position of the guide groove involves the two features of the notch and the boss. The conventional mold is made into 1 mold with 2 stations. First, the guide groove is placed in the first station of the mold, and after the mold is closed, punch on the guide groove. The gap is made, the mold is separated, and then the guide groove is placed in the second station of the mold for forming. After the mold is closed again, a boss is formed on the guide groove. Since two stations are required to form a guide groove, the production cycle is low.

Contents of the invention

The purpose of the present invention is to provide a one-step punching and forming mold structure for guide grooves, which can complete punching and forming in one station, thereby improving the production tempo.

The solution of the present invention to solve the technical problem is: a one-step punching forming die structure for the guide groove, including an upper die and a lower die, the upper die includes an upper die base, and the upper die base is provided with a binder plate , the forming punch and the punching head positioned at the side of the forming punch, the working end of the punching punch is lower than the working end of the forming punch, and the lower die includes a lower die holder, and the lower die holder is provided with There is a lower module, the lower module is provided with a lower knife block and an insert, a punching hole for the punching punch to pass is arranged between the lower knife block and the insert, and the insert is located under the forming punch , a driving mechanism is arranged between the upper mold base and the lower mold base, and the punching punch punches the workpiece or after the punching punch completes the punching of the workpiece, the driving mechanism provides a descending space for the insert .

The above-mentioned mold structure has at least the following beneficial effects: when the mold is closed, the punching punch realizes punching on the workpiece, the process of punching the workpiece by the punching punch or after the punching punch completes punching the workpiece, the driving mechanism is The insert provides a downward space, and the forming punch drives the insert downward, and the forming punch and the insert form a boss on the workpiece. Compared with the existing technology, the punching and the forming of the boss are realized in one station, which improves Production beats.

As a further improvement of the above technical solution, the drive mechanism includes an upper die block set on the upper die base and a slide assembly set on the lower die base, the execution end of the slide assembly extends below the insert. During the mold clamping process, after the upper mold block is pressed against the sliding component, the execution end of the sliding component is driven to move, and the down space is made for the insert.

As a further improvement of the above technical solution, the lower end surface of the insert is provided with a first plane close to the punching hole, a second plane away from the punching hole, and a transition plane connecting the first plane and the second plane, the second plane Higher than the first plane, during the mold clamping process, the upper mold blocks to drive the execution end of the slider assembly to move away from the punching hole, and the contact point between the execution end of the slider assembly and the insert moves from the first plane to the second plane. Two planes. During the mold clamping process, the forming punch drives the insert downward, and after the upper mold hits the block and the sliding assembly is pressed, the execution end of the sliding assembly moves to the second plane along the first plane and the transition plane, making way for the insert to go down space. In the process of giving way to the downside, forming punches and inserts shape the workpiece.

As a further improvement of the above technical solution, the sliding assembly includes a fixed block, a sliding block, and a sliding block mounted on the sliding block, the sliding block is the execution end of the sliding assembly, the fixed block and the sliding block Elastic return parts are arranged between them, the upper part of the slider is provided with a first driving surface, and the upper die is provided with a second driving surface. After the mold is opened, the elastic reset member drives the slide block and the slide block to reset. During the reset process, the slider moves to the first plane along the second plane and the transition plane, and the insert goes up and resets.

As a further improvement of the above technical solution, a limiting assembly is provided between the punch and the holding plate, and the limiting assembly includes a first limiting part arranged on the side of the punching punch and a first limiting part arranged on the holding plate. The second limiting portion in the first limiting portion is located above the second limiting portion. The first limiting part and the second limiting part prevent the punch head from going down beyond the stroke during the mold clamping process.

As a further improvement of the above technical solution, an insert spring is provided between the insert and the lower die holder. When the mold is closed, the insert goes down and the insert spring is compressed. During the reset process, the slider moves along the second plane and the transition plane to the first plane, and the insert spring drives the insert upward to reset.

As a further improvement of the above technical solution, the lower module is provided with a mounting hole for the installation of the insert, the inner wall of the installation hole is provided with a limiting cavity, and the insert is provided with a limiting cavity that can move up and down in the limiting cavity. piece. The height of the limiting cavity is the upstroke and downstroke of the insert.

As a further improvement of the above technical solution, the upper end surface of the insert is provided with a forming surface, and the side of the insert close to the lower knife block is provided with a knife-edge surface. A punching hole is formed between the knife edge face and the lower knife block.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly describe the drawings that need to be used in the description of the embodiments. Apparently, the described drawings are only some embodiments of the present invention, not all embodiments, and those skilled in the art can obtain other designs and drawings based on these drawings without creative work.

Fig. 1 is the structural representation when the embodiment of the present invention mold opening;

Fig. 2 is a schematic structural view of the pressing plate of the embodiment of the present invention when pressing;

Fig. 3 is a schematic structural view of the embodiment of the present invention when punching;

Fig. 4 is a schematic diagram of the structure when the slider is block-blocked and the insert is detached in the embodiment of the present invention;

Fig. 5 is a schematic structural view of forming a boss according to an embodiment of the present invention;

Fig. 6 is a schematic structural diagram of a lower module in an embodiment of the present invention;

Fig. 7 is a schematic structural view of an insert in an embodiment of the present invention;

Fig. 8 is a schematic structural diagram of the slider assembly in the embodiment of the present invention.

Detailed ways

This part will describe the specific embodiment of the present invention in detail, and the preferred embodiment of the present invention is shown in the accompanying drawings. Each technical feature and overall technical solution of the invention, but it should not be understood as a limitation on the protection scope of the present invention.

In the description of the present invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc. indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only In order to facilitate the description of the present invention and simplify the description, it does 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 thus should not be construed as limiting the present invention.

In the description of the present invention, several means one or more, and multiple means more than two. Greater than, less than, exceeding, etc. are understood as not including the original number, and above, below, within, etc. are understood as including the original number. If the description of the first and second is only for the purpose of distinguishing the technical features, it cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features relation.

In the description of the present invention, unless otherwise clearly defined, words such as setting, installation, and connection should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

Referring to Figures 1 to 8, a one-step punching die structure for guide grooves includes an upper die and a lower die, the upper die includes an upper die base 10, and the upper die base 10 is provided with a binder plate 13, Forming punch 14 and the punching punch 15 that is positioned at forming punch 14 besides, the working end of described punching punch 15 is lower than the working end of forming punch 14, and described lower mold comprises lower die holder 20, and described The lower mold base 20 is provided with a lower module 21, the lower module 21 is provided with a lower knife block 22 and an insert 24, and a hole for the punch 15 to pass through is provided between the lower knife block 22 and the insert 24. Punching hole 23, the insert 24 is located below the forming punch 14, a driving mechanism is arranged between the upper mold base 10 and the lower mold base 20, and the punching punch 15 punches the workpiece. After the punch 15 completes the punching of the workpiece, the driving mechanism provides a descending space for the insert 24 . The working end of the punching punch 15 and the working end of the forming punch 14 pass through the mounting hole of the binder plate 13 .

Forming punch 14, punching punch 15 and binder plate 13 are installed on upper mold base 10 by fixing plate 11, and spring is arranged between forming punch 14 and fixing plate 11, and punching punch 15 and fixing plate 11 Springs are arranged between them, and springs are arranged between the binder plate 13 and the fixed plate 11.

A guide block and a guide groove are installed on the lower mold base 20, and the guide groove communicates with the guide cavity in the lower module 21, so that the operator can put the workpiece in place.

A position near the insert 24 in the lower module 21 is provided with a positioning assembly. The positioning component positions the workpiece.

When clamping the mold, the punching punch 15 realizes punching on the workpiece, the process of punching the workpiece by the punching punch 15 or after the punching punch 15 completes punching the workpiece, the driving mechanism provides the down space for the insert 24 , the forming punch 14 drives the insert 24 downward, and the forming punch 14 and the insert 24 form a boss on the workpiece. Compared with the prior art, the punching and the forming of the boss are realized in one station, and the production is improved. the beat.

The driving mechanism includes an upper die block 12 arranged on the upper die base 10 and a sliding assembly arranged on the lower die base 20 , the execution end of the sliding assembly extends below the insert 24 . During the mold clamping process, after the upper mold block 12 presses against the slide assembly, it drives the execution end of the slide assembly to move, allowing the insert 24 to move downward.

The lower end surface of the insert 24 is provided with a first plane 25 close to the punching hole 23, a second plane 28 away from the punching hole 23, and a transition plane 27 connecting the first plane 25 and the second plane 28, the second plane 28 is higher than the first plane 25. During the mold closing process, the upper mold block 12 drives the execution end of the slider assembly to move away from the punching hole 23, and the contact point between the execution end of the slider assembly and the insert 24 starts from the first One plane 25 moves to a second plane 28 . During the mold clamping process, the forming punch 14 drives the insert 24 downward, and after the upper mold block 12 is pressed against the sliding assembly, the execution end of the sliding assembly moves to the second plane 28 along the first plane 25 and the transition plane 27, Make room for insert 24 down. The forming punch 14 and the insert 24 form the workpiece during the clearance of the downside.

The sliding assembly includes a fixed block 31, a sliding block 30 and a sliding block 29 installed on the sliding block 30, the sliding block 29 is the execution end of the sliding assembly, and the fixed block 31 and the sliding block 30 An elastic reset member 32 is arranged between them, a first driving surface 33 is arranged on the upper part of the slider 30 , and a second driving surface 34 is arranged on the upper die block 12 . The first driving surface is a plane, and the second driving surface 34 can be a plane or an arc surface. After the mold is opened, the elastic reset member 32 drives the slider 30 and the slider block 29 to reset. During the reset process, the slider block 29 moves to the first plane 25 along the second plane 28 and the transition plane 27, and the insert 24 moves up and resets. The elastic return member 32 includes a return spring and a return guide rod. The reset guide rod passes through the fixed block 31 and the slide block 30 , the return spring is sleeved on the outer surface of the reset guide rod, one end of the return spring is pressed against the fixed block 31 , and the other end of the return spring is pressed against the slide block 30 . The slide block 30 realizes positioning and guiding along the horizontal movement through the guide block, the guide key and the base plate.

Between the upper end surface and the front side of the slider block 29, a slider plane 26 matching the transition plane 27 is provided. When block 29 moved to the left, insert 24 descended smoothly.

A limiting assembly is provided between the punch 15 and the pressing plate 13, and the limiting assembly includes a first limiting portion 16 arranged on the side of the punching punch 15 and a first limiting portion 16 arranged in the pressing plate 13. Two limiting parts 17 , the first limiting part 16 is located above the second limiting part 17 . The first limiting part 16 and the second limiting part 17 prevent the punch 15 from going down beyond the stroke during the mold clamping process.

An insert spring 38 is provided between the insert 24 and the lower mold base 20 . During mould-closing, the insert 24 descends, and the insert spring 38 is compressed. During the reset process, the slider block 29 moves to the first plane 25 along the second plane 28 and the transition plane 27 , and the insert spring 38 drives the insert 24 upward to reset.

The lower module 21 is provided with a mounting hole for the insert 24 to be installed, the inner wall of the mounting hole is provided with a limiting cavity, and the insert 24 is provided with a limiting block 37 capable of moving up and down in the limiting cavity. The height of the limiting cavity is the stroke of the insert 24 going up and down.

The upper end surface of the insert 24 is provided with a molding surface 35 , and the molding surface 35 is matched with the molding punch 14 . A knife-edge surface 36 is provided on the side of the insert 24 close to the lower knife block 22 . A punching hole 23 is formed between the knife edge surface 36 and the lower knife block 22 .

The following is the preferred working process of the present invention:

1. Install the upper die and lower die on the punching machine, guide the workpiece through the guide block and guide groove, and position the positioning component in place;

2. Start the punching machine, drive the upper mold to move downward, and the upper mold blocks 12 to move downward. When the upper mold moves downward by 25mm, the pressing plate 13 just touches the workpiece, and the pressing action starts, and the pressing plate 13 will remain still;

3. The upper die continues downward, and the spring begins to compress. When the punch 15 moves downward for 6 mm, the punching is completed. The punch 15 continues to move downward and will no longer work. At the same time, the upper die punches 12 and slider 30 comes into contact;

4. The upper mold continues to move downward, the upper mold blocks 12, the forming punch 14 and the punching punch 15 continue to move downward, and the spring continues to compress. When the upper mold moves downward by 4.5mm, the upper mold blocks 12 Drive the slider 30 to move 4.5mm to the left, the elastic reset part compresses 4.5mm, the slider 29 moves 4.5mm to the left along with the slider 30, the slider 29 supports the insert 24, at this time the slider hits Block 29 and insert 24 are in a disengagement critical state;

5. The upper mold continues to move downward for 2mm, the upper mold block 12 drives the slider 30 and the slider block 29 to move 2mm to the left, the slider block 29 and the insert 24 are separated by 2mm, because the insert 24 lower mold has 2 The first insert spring 38 floats up, the insert 24 will not move downward directly, and the forming punch 14 moves downward by 2mm at the same time, the forming punch 14 just comes into contact with the product surface, and the molding content begins;

6. When the upper mold continues to move downward for 0.5mm, the upper mold block 12 is in contact with the parallel surface of the slider 30, and the upper mold block 12 will not drive the slider 30 even if it continues to move downward. After moving downward for another 2mm, slide The mechanism remains unchanged, and the forming punch 14 moves downward, and the mold starts the forming process. When the movement reaches 2.5mm, the mold moves to the end and the forming ends;

7. When the punch press starts to move upwards, the mold starts to move in the opposite direction, the stroke of the upper mold is 40mm in total, and the mold moves to the initial position.

The above is a specific description of the preferred embodiments of the present invention, but the invention is not limited to the described embodiments, those skilled in the art can also make various equivalent modifications or replacements without violating the spirit of the present invention , these equivalent modifications or replacements are all included within the scope defined by the claims of the present application.

Claims (8)

1. A guide groove one-step punching forming die structure, comprising a patrix and a lower die, is characterized in that: the patrix comprises a patrix, and the patrix is provided with a binder plate, a molding punch and The punching head that is positioned at forming punch side, the working end of described punching punch is lower than the working end of forming punch, and described lower mold comprises lower mold base, and described lower mold base is provided with lower module, so The lower module is provided with a lower knife block and an insert, and a punching hole for the punching punch to pass is arranged between the lower knife block and the insert. The insert is located below the forming punch, and the upper mold A driving mechanism is arranged between the base and the lower die base, and the driving mechanism provides a descending space for the insert during the process of punching the workpiece by the punching punch or after the punching punch completes punching the workpiece. 2. The guide groove one-step punching forming die structure according to claim 1, characterized in that: the drive mechanism includes an upper die block arranged on the upper die base and a sliding assembly arranged on the lower die base, so that The execution end of the sliding assembly extends below the insert. 3. The one-step punching die structure for guide groove according to claim 2, characterized in that: the lower end surface of the insert is provided with a first plane close to the punching hole and a second plane away from the punching hole And the transition plane connecting the first plane and the second plane, the second plane is higher than the first plane, in the process of mold closing, the forming punch drives the insert down, and the upper mold drives the execution end of the slider assembly away from the punching The direction of the hole moves, and the contact point between the execution end of the slider assembly and the insert moves from the first plane to the second plane. 4. According to claim 1, 2 or 3, the one-step punching and forming die structure for the guide groove is characterized in that: the sliding assembly includes a fixed block, a sliding block and a sliding block mounted on the sliding block, The slider block is the execution end of the slide assembly, an elastic reset member is provided between the fixed block and the slider, the upper part of the slider is provided with a first driving surface, and the upper die block is provided with a second drive surface. noodle. 5. According to claim 1, 2 or 3, the one-step punching and forming die structure for the guide groove is characterized in that: a limit assembly is provided between the punch and the holding plate, and the limit assembly It includes a first limiting part arranged on the side of the punch and a second limiting part arranged in the holding plate, and the first limiting part is located above the second limiting part. 6. The mold structure for one-step punching and forming of the guide groove according to claim 1, characterized in that: an insert spring is provided between the insert and the lower die seat. 7. According to claim 1 or 6, the one-step punching forming mold structure for the guide groove is characterized in that: the lower module is provided with a mounting hole for mounting inserts, and the inner wall of the mounting hole is provided with a limiting cavity , the insert is provided with a limit block capable of moving up and down in the limit cavity. 8. According to claim 1 or 6, the one-step punching molding die structure for the guide groove is characterized in that: the upper end surface of the insert is provided with a molding surface, and the side of the insert near the lower knife block is provided with a There are knife-edge noodles.