CN117046969A - Punching mechanism, punching die and punching method - Google Patents

Abstract

The application provides a blanking mechanism, a blanking die and a blanking method, wherein the blanking mechanism is used for blanking a material belt and is provided with a first blanking position and a second blanking position; the blanking mechanism comprises: the semi-finished product punch head can punch the material belt moving to the first punching position to form a semi-finished product; a carrier capable of receiving the semi-finished product at a first blanking position and transporting the semi-finished product to a second blanking position; forming the insert to receive the semi-finished product at a second blanking position; and the finished product punch is matched with the forming insert to punch the semi-finished product at the second blanking position to form a finished product. Therefore, in the process from semi-finished product processing to finished product processing, the product is completely separated from the material belt and pushed to the next forming station in a transmission mode, the problem that the semi-finished product falls off is solved, the service life of a die is prolonged, the processing time of a forming punch is saved, and the processing cost of the punch is greatly reduced.

Description

Punching mechanism, punching die and punching method

Technical Field

The application relates to the technical field of blanking equipment, in particular to a blanking mechanism, a blanking die and a blanking method.

Background

The universal tri-wave crest wave spring on various motors is thin in material, small in outer diameter (diameter is 16.0) and is in a concave-convex regular round shape. The prior process adopts a method that the product is separated from shallow forming, and the forming is stable, but the method has two defects, namely, the shallow forming punch needs to be used for 3D profile processing, the processing time is long and the processing cost is high; secondly, after the product breaks away from the material belt and shallow forms, the product is clamped on the material belt again, the material belt conveys the shallow formed product to the next step, in the process, the product sometimes falls into a die, the production efficiency and the product quality are affected, and the die insert can be damaged when serious.

Disclosure of Invention

The first aspect of the present application provides a blanking process, which is used to solve the defects that in the prior art, in the process of conveying a shallow formed product from a material belt to the next step, the product sometimes falls into a die, the production efficiency and the product quality are affected, and the die insert is damaged seriously.

In order to achieve the above purpose, the technical scheme of the application is as follows: a blanking mechanism for blanking a material belt,

the blanking mechanism is provided with a first blanking position and a second blanking position;

the blanking mechanism includes:

the semi-finished product punch head can punch the material belt moving to the first punching position to form a semi-finished product;

a carrier capable of receiving the semi-finished product at the first blanking position and transporting the semi-finished product to the second blanking position;

a forming insert capable of receiving the semi-finished product in the second blanking position;

and the finished product punch is matched with the forming insert, and the semi-finished product at the second blanking position is punched to form a finished product.

Preferably, the carrier is openable in the first and second blanking positions to receive and discharge the semi-finished product.

Preferably, the method further comprises:

and the driving device is in transmission connection with the carrying piece and is used for driving the carrying piece to move.

Preferably, the carrier comprises:

the movable pushing block is provided with a first concave part;

the movable clamping block is hinged with the movable pushing block, a second concave part matched with the first concave part is arranged on the movable clamping block, the first concave part and the second concave part are combined to form a containing cavity, a material ejection pin is arranged in the containing cavity, and the semi-finished product is positioned in the containing cavity and abuts against the material ejection pin;

and two ends of the first spring are respectively connected to the movable push block and the movable clamping block and are used for enabling the movable push block and the movable clamping block to be in a fitting state.

Preferably, the blanking mechanism further comprises:

the first pushing block can move and push the movable pushing block and the movable clamping block to rotate relatively so as to open each other when the carrying piece moves to the first blanking position;

the second pushing block can move and push the movable pushing block and the movable clamping block to rotate relatively so as to open each other when the carrying piece moves to the second blanking position;

during the movement of the carrier from the first blanking position to the second blanking position, the movable push block and the movable clamping block are attached to each other.

Preferably, one end of the movable pushing block is connected with one end of the movable clamping block through a connecting pin, and a notch is formed at the other ends of the movable pushing block and the movable clamping block;

when the carrier moves to the first blanking position, the first ejector block is partially embedded into the notch;

when the carrier moves to the second blanking position, the second ejector block is partially embedded in the notch.

Preferably, the first pushing block is arranged at one side of the carrying piece, and a limiting block is arranged at the other side of the carrying piece, and is used for limiting the relative rotation of the movable clamping block and the movable pushing block in the moving process of the carrying piece;

the movable clamping block is provided with a groove, when the carrying piece moves to the second blanking position, the limiting block part is positioned in the groove, and the movable clamping block and the pushing block can rotate relatively.

Preferably, the bottoms of the first pushing block and the second pushing block are respectively provided with a second spring, when the carrying piece moves to the first blanking position and the second blanking position, the second springs are in an unfolding state, and when the carrying piece leaves the first blanking position and the second blanking position, the second springs are switched from the unfolding state to a compression state.

A second aspect of the present application provides a blanking die comprising: an upper die holder; a lower die holder;

and a blanking mechanism as in any of the above embodiments, wherein the semi-finished punch and the finished punch are disposed on the upper die base, and the carrier and the forming punch are disposed on the lower die base.

A third aspect of the present application provides a blanking method using the blanking die as described in the above embodiment, including:

s100: conveying the strip to the first blanking position;

s200: the carrier moves to the first blanking position and is positioned below the material belt, the semi-finished product punch is used for blanking the material belt positioned at the first blanking position to form a semi-finished product, and the semi-finished product falls to the carrier;

s300: the carrier conveys the semi-finished product from the first blanking position to the second blanking position and drops from the carrier onto the forming insert;

s400: and stamping the semi-finished product by the finished product punch to form a finished product.

Compared with the prior art, the application has the beneficial effects that: the carrier is arranged to carry and convey the semi-finished product after being blanked by the semi-finished product punch to the upper part of the forming insert to be blanked by the finished product punch, so that the product is completely separated from a material belt in the process from semi-finished product processing to finished product processing, and is pushed to the next forming station in a transmission mode, the problem that the semi-finished product falls off is solved, the service life of a die is prolonged, the processing time of the forming punch is saved, and the processing cost of the punch is greatly reduced.

Drawings

In order to more clearly illustrate the application or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the application, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a blanking die provided by the present application;

fig. 2 is a schematic structural view of a blanking mechanism provided by the present application;

FIG. 3 is a schematic view of the installation of a semi-finished cutter block and a forming insert provided by the present application;

FIG. 4 is an enlarged partial schematic view of FIG. 3 a;

FIG. 5 is a schematic view illustrating the installation of the carrier, the first ejector pad and the second ejector pad according to the present application;

fig. 6 is a schematic view of the structure of the carrier provided by the present application.

Reference numerals:

10. a semi-finished punch; 20. a finished punch; 30. a carrier; 31. a movable pushing block; 311. a first concave portion; 32. a movable clamping block; 321. a second concave portion; 322. a groove; 33. a first spring; 34. a notch; 40. forming the insert; 50. a driving device; 60. a first push block; 70. the second pushing block; 80. a connecting pin; 90. a liftout pin; 100. a limiting block; 110. an upper die holder; 120. a lower die holder; 130. an upper clamping plate; 140. a stripper plate; 150. a lower template; 160. a lower backing plate; 170. a blowing pin; 180. a semi-finished cutter block; 181. a semi-finished product knife edge; 190. a knife edge fixing block; 200. a cushion block; 201. a mounting hole; 210. a cylinder fixing block; 220. a backing plate; 230. a blocking piece; 240. a second spring; 250. a contour sleeve.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

As shown in fig. 1 to 6, an embodiment of the present application provides a blanking mechanism for blanking a material strip, the blanking mechanism having a first blanking position and a second blanking position in which the material strip can be blanked.

The blanking mechanism comprises a semi-finished product punch 10, a finished product punch 20, a carrier 30 and a forming insert 40, the material belt moves, when the material belt moves to a first blanking position, the semi-finished product punch 10 blanking the material belt to form a semi-finished product, the carrier 30 can move, when the first carrier 30 moves to the first blanking position, the carrier 30 can receive the semi-finished product which is taken off from the material belt after blanking and convey the semi-finished product to a second blanking position, the forming insert 40 is arranged at the second blanking position, the forming insert 40 can receive the semi-finished product, the finished product punch 20 is arranged above the forming insert 40, and the forming punch cooperates with the forming insert 40 to blank the semi-finished product at the second blanking position to form the finished product. In this way, the product is completely separated from the material belt in the process from semi-finished product processing to finished product processing, and is pushed to the next forming station in a transmission mode, so that the problem that the semi-finished product falls off is solved, the service life of a die is prolonged, the processing time of a forming punch is saved, and the processing cost of the punch is greatly reduced

The carrier 30 is openable in a first blanking position and a second blanking position to receive and deposit the semi-finished product. When the carrying piece 30 is opened, the semi-finished product after being blanked by the semi-finished product punch 10 can fall onto the carrying piece 30, when the carrying piece 30 conveys the semi-finished product to the second blanking position, the carrying piece 30 is opened, the semi-finished product can fall onto the forming insert 40, the finished product punch 20 blanks the semi-finished product to obtain a finished product, and the semi-finished product is conveyed in a clamping mode through the carrying piece 30, so that the semi-finished product can be kept stable in the conveying process, the semi-finished product is prevented from falling, the processing time of the forming punch is further saved, and the processing cost of the forming punch is reduced. It will be appreciated that the carrier 30 is in a closed state during the transport of the semi-finished product from the first blanking position to the second blanking position, i.e. the carrier 30 clamps the semi-finished product.

Further, the blanking mechanism further comprises a driving device 50 in driving connection with the carrier 30 for driving the carrier 30 in motion. It should be noted that the driving device 50 drives the carrier 30 to reciprocate linearly. The driving means 50 may be a servo motor or an electric cylinder or an air cylinder or the like, where an air cylinder is preferred for driving the carrier 30.

The carrying member 30 comprises a movable push block 31, a movable clamping block 32 and a first spring 33, wherein the movable push block 31 is connected with the driving device 50, a first concave part 311 is arranged on the movable push block 31, the first concave part 311 is semicircular, the movable clamping block 32 is hinged with the movable push block 31, thus, one end of the movable clamping block 32 and one end of the movable push block 31 can be opened, a second concave part 321 is arranged on the movable push block 31, the shape of the second concave part 321 is matched with that of the first concave part 311, namely, the first concave part 311 is semicircular, as a workpiece to be processed is circular, a containing cavity is formed after the first concave part 311 and the second concave part 321 are combined, the containing cavity is cylindrical, a jacking pin 90 is arranged in the containing cavity, after the semi-finished product is punched by the semi-finished product punch 10, the semi-finished product can fall on the jacking pin 90, and two ends of the first spring 33 are respectively connected with the movable push block 31 and the movable clamping block 32 for enabling the movable push block 31 and the movable clamping block 32 to be in a fitting state. Namely, the movable push block 31 and the movable catch block 32 are restricted from opening.

The blanking mechanism further includes a first push block 60 and a second push block 70, the first push block 60 and the second push block 70 are disposed on one side of the carrier 30, when the carrier 30 moves to the first blanking position, the first push block 60 can move and push the movable push block 31 and the movable clamp block 32 to rotate relatively so as to open each other, at this time, the semi-finished product blanked by the semi-finished product punch 10 can drop into the accommodating cavity, when the carrier 30 moves to the second blanking position, the second push block 70 can move and push the movable push block 31 and the movable clamp block 32 to rotate relatively so as to open each other, at this time, the semi-finished product in the accommodating cavity can drop onto the forming insert 40 for the forming punch to blank the finished product. During the movement of the carrier 30 from the first blanking position to the second blanking position, the movable push block 31 and the movable clamp block 32 are attached to each other, meanwhile, the first push block 60 is limited by the movable push block 31, the first push block 60 abuts against the side wall of the movable push block 31, the movement of the second push block 70 is converted from the extended state to the abutting contraction of the pushed clamp block, and when the carrier 30 moves to the second position, the second push block 70 is converted from the contracted state to the extended state and drives the movable clamp block 32 to be partially separated from the movable push block 31, so that the movable push block 31 and the movable clamp block 32 are opened.

Specifically, the movable push block 31 is connected with one end of the movable clamping block 32 through the connecting pin 80, the connecting pin 80 enables the movable push block 32 to rotate relatively to the movable clamping block 32, a notch 34 is formed at the other ends of the movable push block 31 and the movable clamping block 32, when the carrying piece 30 moves to a first blanking position, the first push block 60 is partially embedded into the notch 34, at this time, the first push block 60 can push the movable clamping block 32, so that the movable clamping block 32 rotates, the space of the accommodating cavity is enlarged, and a semi-finished product after being blanked by the semi-finished product punch 10 can be accepted; when the carrier 30 moves to the second blanking position, the second ejector pad 70 is partially embedded into the notch 34, and at this time, the second ejector pad 70 can push the movable clamping block 32, so that the movable clamping block 32 rotates, the space of the accommodating cavity becomes large, and the semi-finished product in the accommodating cavity can drop from the accommodating cavity onto the forming insert 40.

A limiting block 100 is arranged on the other side of the carrying piece 30, the limiting block 100 is arranged opposite to the first pushing block 70, the limiting block 100 is used for limiting the movable clamping block 32 and the movable pushing block 31 to rotate relatively in the moving process of the carrying piece 30, a groove 322 is formed in the movable clamping block 32, when the carrying piece 30 moves to the second blanking position, the limiting block 100 is partially positioned in the groove 322, and the movable clamping block 32 and the pushing block can rotate relatively. The position of the limiting block 100 is fixed, in the present application, the first push block 60, the second push block 70 and the head of the limiting block 100 are all configured to protrude from two ends towards the center, so that the carrier 30 can avoid the first push block 60 and the second push block 70 from being damaged by extrusion during movement, and meanwhile, the carrier can enter the notch 34 at the first blanking position and the second blanking position to rotate the movable clamping block 32.

The extending movement of the first push block 60 and the second push block 70 is driven by an elastic member, specifically, the elastic member is a second spring 240, the second spring 240 is disposed at the bottoms of the first push block 60 and the second push block 70, the first push block 60 and the second push block 70 are both connected with the second spring 240, the other end of the second spring 240 is limited, when the carrier 30 moves to the first blanking position and the second blanking position, the second spring 240 is in an expanded state, and when the carrier 30 leaves the first blanking position and the second blanking position, the second spring 240 is switched from the expanded state to the compressed state. By providing the second spring 240 for driving, the conversion of the movement forms of the first push block 60 and the second push block 70 is facilitated.

As shown in fig. 1 to 6, a second aspect of the present application provides a blanking die including: the upper die holder 110, the lower die holder 120, and the blanking mechanism of any of the embodiments described above, wherein the semi-finished punch 10 and the finished punch 20 are disposed on the upper die holder 110, and the carrier 30 and the forming punch 40 are disposed on the lower die holder 120. The upper die holder 110 is provided with an upper clamping plate 130, the upper clamping plate 130 is used for fixing the semi-finished punch 10 and the finished punch 20, the upper die holder 110 is used for fixing the upper clamping plate 130 and is fixedly connected with a punch press, the upper clamping plate 130 is also connected with a stripper plate 140, the stripper plate 140 is used for fixing a stripper plate insert and pressing a material belt for blanking, the punch is separated from the material belt after blanking is finished, a uniform-height sleeve 250 is connected between the stripper plate 140 and the upper clamping plate 130, the lower die holder 120 is also provided with a lower die plate 150, the lower die plate 150 is used for fixing a lower die insert, two lower die plates 150 are oppositely arranged, a carrier 30 is arranged between two lower die plates 150, a first ejector pad 60, a second ejector pad 70 and a second spring 240 are arranged on one lower die plate 150, a limiting block 100 is arranged on the other lower die plate 150, a lower base 160 is also arranged below the lower die plate 150 and is used for bearing the blanking force of the lower die insert, the lower die holder 120 is used for fixing the lower die plate 150 and the lower die insert and is connected and fixed with a punch press, one side of the forming insert 40 is provided with blowing pins 170, the blowing pins 170 are used for blowing out formed products to a forming position, two blowing pins 170 are arranged, the two blowing pins 170 are arranged at intervals and aligned with the forming position of the forming insert 40, a semi-finished product cutter block 180 is arranged at a first blanking position, a semi-finished product cutter edge 181 is arranged on the semi-finished product cutter block 180, a semi-finished product punch 10 is arranged above the semi-finished product cutter edge 181, when a material belt passes through the semi-finished product cutter edge 181, the semi-finished product punch 10 punches out a semi-finished product under the action of the semi-finished product cutter edge 181, a cutter edge fixing block 190 is fixedly arranged between the two lower die plates 150, the cutter edge fixing block 190 is used for fixing the semi-finished product cutter block 180, a cushion block 200 is arranged below the movable push block 31, the cushion block 200 is used for guaranteeing stable pushing of the movable pushing block 31, a mounting hole 201 is formed in one end, far away from the air cylinder, of the cushion block 200, the forming insert 40 is arranged in the mounting hole 201, an air cylinder fixing block 210 and a base plate 220 are further arranged at the end and the bottom of the air cylinder, the base plate 220 is used for fixing the air cylinder fixing block 210, the air cylinder fixing block 210 is used for fixing the air cylinder, a blocking block 230 is further arranged at the end of the movable pushing block 31, and the blocking block 230 is used for accurately positioning the position of the movable pushing block 31.

The application also provides a blanking method using the blanking die of the above embodiment, including:

s100: conveying the material belt to a first blanking position;

s200: the carrier 30 moves to the first blanking position and is positioned below the material belt, the material belt in the first blanking position is blanked by the semi-finished product punch 10 to form a semi-finished product, and the semi-finished product falls to the carrier 30;

s300: the carrier 30 conveys the semifinished product from the first blanking position to the second blanking position and drops from the carrier 30 onto the forming insert 40;

s400: the finished punch 20 punches the semi-finished product to form the finished product.

The following is set forth in specific examples:

the feeding step distance of the material belt is as follows: 18.0MM, carrier 30 has a transfer distance of 25.0MM and a web feed direction and carrier 30 transfer direction angle of 90 °. Firstly, the die drives the upper die holder 110 to start to move downwards, a semi-finished product is produced after a blank belt is blanked by the semi-finished product punch 10 at a first blanking position, at this time, the movable clamping block 32 is opened by a certain angle with the connecting pin 80 as a circle center under the action of the second spring 240 and the first pushing block 60, the angle is about 1.5 degrees, the opening distance of the movable clamping block 32 is about 0.35MM, and at this time, the semi-finished product falls onto the ejector pin 90 in the accommodating cavity under the action of gravity after blanking. The die drives the upper die holder 110 to start ascending after running to the lowest point, at this moment, the cylinder controlled by the electromagnetic valve pushes the movable push block 31 and the movable push block 32 to push the semi-finished product to the right side on the first blanking position, after pushing 1.0MM, the first push block 60 slides backward under the action of the movable push block 31, the movable push block 32 firmly clamps the semi-finished product under the tensile force of the first spring 33, the cylinder continues to push the semi-finished product forward, and in the process of pushing to 23.0MM, the movable push block 32 and the movable push block 31 always keep clamping the semi-finished product due to the limiting effect of the limiting block 100. In the process from 23.0MM to 2.0MM pushed to the final forming position of 25.0MM (second blanking position), the second pushing block 70 starts to push away the movable clamping block 32 with the connecting pin 80 as the center of a circle under the pressure of the second spring 240, so that the movable clamping block 32 can smoothly open an angle of about 1.5 degrees, the opening gap is about 0.35MM, the semi-finished product is released and falls onto the forming insert 40 at the moment, the die continues to move upwards, and the cylinder controlled by the electromagnetic valve drives the movable pushing block 31 and the movable clamping block 32 to start to retract towards the first blanking position, so as to prepare for receiving the semi-finished product of the next blanking. When the die moves up to the initial position, a punching time is completed, at the moment, the material belt is sent forward by 18.0MM distance under the action of the punch feeder, the die moves down to the lowest point again, the forming punch completes the blanking forming of the semi-finished product at the second blanking position, and the product is obtained, at the same time, the first blanking position punches out a semi-finished product again, and the next blanking is formed into another product. When the mold is up, the blow pin 170 will blow air flow to blow the product from the forming insert 40 out of the mold.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and are not limiting; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims (10)

1. A blanking mechanism is used for blanking a material belt and is characterized in that,

the blanking mechanism is provided with a first blanking position and a second blanking position;

the blanking mechanism includes:

the semi-finished product punch head can punch the material belt moving to the first punching position to form a semi-finished product;

a carrier capable of receiving the semi-finished product at the first blanking position and transporting the semi-finished product to the second blanking position;

a forming insert capable of receiving the semi-finished product in the second blanking position;

and the finished product punch is matched with the forming insert, and the semi-finished product at the second blanking position is punched to form a finished product.

2. Blanking mechanism according to claim 1, characterized in that it comprises:

the carrier is openable in the first and second blanking positions to receive and discharge the semi-finished product.

3. The blanking mechanism of claim 2, further comprising:

and the driving device is in transmission connection with the carrying piece and is used for driving the carrying piece to move.

4. A blanking mechanism according to any one of claims 1 to 3, wherein the carrier comprises:

the movable pushing block is provided with a first concave part;

the movable clamping block is hinged with the movable pushing block, a second concave part matched with the first concave part is arranged on the movable clamping block, the first concave part and the second concave part are combined to form a containing cavity, a material ejection pin is arranged in the containing cavity, and the semi-finished product is positioned in the containing cavity and abuts against the material ejection pin;

and two ends of the first spring are respectively connected to the movable push block and the movable clamping block and are used for enabling the movable push block and the movable clamping block to be in a fitting state.

5. The blanking mechanism of claim 4, further comprising:

the first pushing block can move and push the movable pushing block and the movable clamping block to rotate relatively so as to open each other when the carrying piece moves to the first blanking position;

the second pushing block can move and push the movable pushing block and the movable clamping block to rotate relatively so as to open each other when the carrying piece moves to the second blanking position;

during the movement of the carrier from the first blanking position to the second blanking position, the movable push block and the movable clamping block are attached to each other.

6. The blanking mechanism of claim 5, wherein,

the movable pushing block is connected with one end of the movable clamping block through a connecting pin, and a notch is formed at the other ends of the movable pushing block and the movable clamping block;

when the carrier moves to the first blanking position, the first ejector block is partially embedded into the notch;

when the carrier moves to the second blanking position, the second ejector block is partially embedded in the notch.

7. The blanking mechanism of claim 6, wherein,

the first ejector block is arranged on one side of the carrying piece, and the other side of the carrying piece is provided with a limiting block which is used for limiting the relative rotation of the movable clamping block and the movable ejector block in the moving process of the carrying piece;

the movable clamping block is provided with a groove, when the carrying piece moves to the second blanking position, the limiting block part is positioned in the groove, and the movable clamping block and the pushing block can rotate relatively.

8. The blanking mechanism of claim 5, wherein,

the bottoms of the first pushing block and the second pushing block are respectively provided with a second spring, when the carrying piece moves to the first blanking position and the second blanking position, the second springs are in an unfolding state, and when the carrying piece leaves the first blanking position and the second blanking position, the second springs are switched from the unfolding state to a compression state.

9. A blanking die, characterized by comprising:

an upper die holder;

a lower die holder;

the blanking die of any one of claims 1 to 8, wherein the semi-finished punch and the finished punch are disposed on the upper die base, and the carrier and the forming insert are disposed on the lower die base.

10. A blanking method using the blanking die of claim 9, characterized by comprising:

s100: conveying the strip to the first blanking position;

s200: the carrier moves to the first blanking position and is positioned below the material belt, the semi-finished product punch is used for blanking the material belt positioned at the first blanking position to form a semi-finished product, and the semi-finished product falls to the carrier;

s300: the carrier conveys the semi-finished product from the first blanking position to the second blanking position and drops from the carrier onto the forming insert;

s400: and stamping the semi-finished product by the finished product punch to form a finished product.