CN112222279A

CN112222279A - Cam cutting structure and operation method thereof

Info

Publication number: CN112222279A
Application number: CN202011077173.5A
Authority: CN
Inventors: 程牧; 林颖辉; 邹晓明; 邵锋; 徐海松; 李泽文
Original assignee: Wenzhou Yihua Connector Co Ltd
Current assignee: Wenzhou Yihua Connector Co Ltd
Priority date: 2020-10-10
Filing date: 2020-10-10
Publication date: 2021-01-15

Abstract

The invention relates to a cam cutting structure and an operation method thereof, comprising a shaft sleeved with a cam, wherein the cam comprises a circular base part and a convex bulge part, one end of the shaft is sleeved with a gear comprising N convex teeth, wherein N is more than or equal to 8, the gear is used for matching with a transmission inclined block, the transmission inclined block is used for pushing the inclined convex teeth one by one to enable the gear to rotate, and further rotating the coaxial cams, a push rod is arranged below the cams, a push block is laterally matched below the push rod, a concave part and a convex part are arranged between the push rod and the push block, when the convex part of the cam rotates to generate propping interference with the push rod, the push rod can be propped by the convex part to move downwards, the concave part and the convex part are staggered and separated so as to push the push block laterally, the pushing block is provided with a punch matched with the knife edge, and the punch can be pushed by the pushing block to cut off redundant materials of the product under the combined action of the punch and the knife edge. Therefore, the punching speed can be greatly improved, and the material cutting accuracy is improved.

Description

Cam cutting structure and operation method thereof

Technical Field

The invention relates to a die device and an operation method thereof, in particular to a die device applied to rapid cutting of sheets.

Background

Chinese utility model patent No. CN211404975U discloses a bidirectional terminal crimping apparatus, which comprises a crimping device and a discharging device disposed on one side of the crimping device, wherein the discharging device comprises a finished product discharging mechanism and a remainder discharging mechanism, the finished product discharging mechanism comprises a swing cylinder fixed on the frame, a swing arm fixedly connected with the swing end of the swing cylinder, a connecting shaft connected to the end of the swing arm, a mounting plate fixed on the connecting shaft, and a pneumatic clamping jaw fixed on the mounting plate, the pneumatic clamping jaw is movably disposed at the front end of the crimping station of the crimping device; the excess material discharge mechanism comprises two guide pipes and a cutting assembly connected with the guide pipes, wherein the cutting assembly comprises a fixed block fixed between the guide pipes, a main cutter arranged between the end faces of the two guide pipes in a telescopic mode and a cutter cylinder driving the main cutter to stretch. The two-way terminal equipment of beating that it provided has improved the efficiency of beating end rear end receipts material process, reduces artifical intensity, avoids operating personnel to be cut the problem of injury by the clout, improves the security.

However, the air cylinder has the advantages of simple structure, low manufacturing cost, no limit on the number of products in one group, adjustability through the electromagnetic valve and low punching speed which is usually within 300 times per minute. However, when the punching speed needs to be increased, for example, the punching speed is more than 300 times per minute, the reaction speed of the air cylinder can not be obviously kept up to the standard, and the risk of serious blanking failure exists.

Therefore, there is a need for an improved blanking structure to overcome the above-mentioned drawbacks of the prior art.

Disclosure of Invention

The invention aims to provide a cam blanking structure which is high in punching speed and reduces the risk of blanking failure and an operation method thereof.

In order to achieve the technical purpose, the invention adopts the following technical scheme: a cam cutting structure comprises a shaft sleeved with a cam, wherein the cam comprises a circular base part and a convex-shaped convex part, a gear is sleeved at one end of the shaft and comprises a plurality of convex teeth and concave teeth positioned between two adjacent convex teeth, the gear comprises N convex teeth, N is more than or equal to 8, the gear is used for being matched with a transmission inclined block, the transmission inclined block is used for pushing the inclined convex teeth one by one to enable the gear to rotate and further enable the coaxial cam to rotate, a push rod is arranged below the cam, a push block is laterally matched below the push rod, mutually matched convex-shaped convex parts and convex-shaped convex parts are arranged between the push rod and the push block, when the convex part of the cam rotates to be in jacking interference with the push rod, the push rod can be jacked by the convex part to move downwards, so that the mutually matched concave parts and convex parts are separated in a staggered mode, therefore, the push block is pushed laterally to move in the direction far away from the push rod, a punch matched with the knife edge is arranged on the push block, and the punch can be pushed by the push block to cut off redundant materials of a product under the combined action of the punch and the knife edge.

As a further improvement of the invention, the gear is a helical gear, the transmission oblique block extends up and down and can move back and forth to push the helical gear, and the bottom of the transmission oblique block is provided with a wedge-shaped oblique surface matched with the shape of the concave teeth of the helical gear.

As a further improvement of the invention, the helical gear is further provided with a stop block capable of preventing the gear from reversely rotating, the stop block comprises a pivoted fixed end, the stop block can rotate by taking the pivoted fixed end as an axis, and the other end of the stop block is provided with a laterally convex stop concave part for dynamically matching the concave teeth.

As a further improvement of the invention, a brake wheel is sleeved at the other end of the shaft, a plurality of spaced concave parts are arranged on the brake wheel, the number and arrangement of the concave parts correspond to the concave teeth or the convex teeth of the gear, and the cam cutting structure is provided with a brake ejector rod which is selectively matched with or separated from the concave parts in the lateral direction.

As a further improvement of the present invention, the push rod is cross-shaped and includes a horizontal portion and a vertical portion, and through holes penetrating vertically are formed on both sides of the horizontal portion for inserting the positioning rod, so that the vertical portion moves along a predetermined path.

As a further improvement of the present invention, the top of the vertical portion is provided with a circular arc protrusion for interfering with the convex portion of the cam.

As a further improvement of the present invention, the vertical portion is provided with a plurality of left and right extending convex portions arranged up and down, the convex portions are provided with an upper inclined surface and a lower inclined surface, the inclination of the upper inclined surface is greater than that of the lower inclined surface, the push block is convexly provided with a plurality of left and right extending concave portions arranged up and down, the convex portions are also provided with an upper inclined surface and a lower inclined surface, and the inclination of the upper inclined surface is greater than that of the lower inclined surface.

As a further improvement of the invention, the product is a conductive terminal sheet set which comprises a plurality of conductive terminals arranged at intervals and a material belt for connecting all the conductive terminals, the cam cutting structure can punch one conductive terminal every time the gear rotates, and part of the conductive terminals can be cut off when the cam is interfered.

In order to achieve the technical purpose, the invention adopts the following technical scheme: a cam blanking structure operation method comprises the cam blanking structure, the cam blanking structure is a part of a die, when an upper die and a lower die of the die are closed, a transmission oblique block toggles a gear to rotate, when a required angle is reached, a push rod is pushed by a cam, a punch is pushed by the push rod, the punch reaches a set height and is matched with a knife edge to cut off redundant conductive terminals, and after reset, the cam completes one round of work.

As a further improvement of the invention, the punching speed of the cam blanking structure is more than 600 times per minute.

Compared with the prior art, the gear of the cam blanking structure and the operation method thereof comprises N convex teeth, wherein N is more than or equal to 8, the gear is used for matching with a transmission inclined block, the transmission inclined block is used for pushing the inclined convex teeth one by one to enable the gear to rotate, and further rotating the coaxial cam, a push rod is arranged below the cam, a push block is laterally matched below the push rod, a convex part and a convex part which are matched with each other are arranged between the push rod and the push block, when the convex part of the cam rotates to generate propping interference with the push rod, the push rod can be propped by the convex part to move downwards, so that the concave part and the convex part which are matched with each other are staggered and separated, thereby laterally pushing the push block to move in the direction far away from the push rod, the push block is provided with a punch head used for being matched with the knife edge, the punch is pushed by the push block to cut off the redundant material of the product under the combined action of the punch and the knife edge. By the arrangement, the cam cutting structure and the operation method thereof have high punching speed, and the cutting accuracy can be effectively ensured.

Drawings

Fig. 1 is a side view of the cam blanking structure of the present invention after the mold is closed.

Fig. 2 is a perspective combination view of the cam blanking structure of the present invention.

Fig. 3 is a perspective assembly view of another angle of the cam blanking structure of the present invention.

Fig. 4 is a side view of the cam blanking structure of the present invention.

Fig. 5 is a rear view of the cam blanking structure of the present invention.

Fig. 6 is another side view of the cam blanking structure of the present invention.

Fig. 7 is a perspective assembly view of a further angle of the cam blanking structure of the present invention.

Fig. 8 is a partially exploded perspective view of the cam blanking structure of the present invention.

Fig. 9 is an exploded perspective view of another angle of the cam blanking structure of the present invention.

Fig. 10 is a side view of the invention in fig. 9.

Fig. 11 is a schematic view of a product corresponding to the cam blanking structure of the present invention.

Reference numerals are used.

Terminal structure is cut to cam	100	Transmission sloping block	1
				Wedge-shaped inclined plane	11	Gear wheel	2
Convex tooth	21	Concave tooth	22
				Stop block	3	Pin joint fixed end	31
Stop concave part	32	Shaft	4
				Cam wheel	5	Circular base	51
Raised part	52	Push rod	6
				Horizontal part	61	Perforation	611
Vertical part	62	Arc-shaped protrusion	621
				Concave part	622	Upper inclined plane	6221
Lower inclined plane	6222	Push block	7
				Convex part	71	Upper inclined plane	711
Lower inclined plane	712	Punch head	8
				Plate-removing insert	81	Knife edge	82
Knife edge cushion block	83	Brake wheel	9
				Concave part	91	Brake ejector rod	92
Product(s)	200	Conductive terminal	201
				Material belt	202	Die set	10
Cutting out the vacancy	203

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

Techniques and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be considered a part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

Fig. 1 to 11 are schematic structural views of a cam blanking structure 100 and a product 200 according to the present invention. A cam blanking structure 100 comprises a shaft 4 sleeved with a cam 5, wherein the cam 5 comprises a round base part 51 and a convex lug part 52, one end of the shaft 4 is sleeved with a gear 2, the gear 2 comprises a plurality of convex teeth 21 and concave teeth 22 positioned between two adjacent convex teeth 21, the gear 2 comprises N convex teeth 21, wherein N is more than or equal to 8, the gear 2 is used for matching with the transmission inclined blocks 1, the transmission inclined blocks 1 are used for pushing the inclined convex teeth 21 one by one to enable the gear 2 to rotate, and further rotating the cam 5 positioned on the same shaft 4, a push rod 6 is arranged below the cam 5, a push block 7 is laterally matched below the push rod 6, a concave part 622 and a convex part 71 which are mutually matched are arranged between the push rod 6 and the push block 7, in various embodiments of the present invention, the concave portion 622 and the convex portion 71 may be disposed in an exchangeable manner. When the protruding part 52 of the cam 5 rotates to abut against and interfere with the push rod 6, the push rod 6 can be abutted by the protruding part 52 to move downwards, so that the mutually matched concave part 622 and the convex part 71 are staggered and separated, the push block 7 is laterally pushed to move in a direction away from the push rod 6, a punch 8 matched with the knife edge 82 is arranged on the push block 7, and the punch 8 can be pushed by the push block 7 to cut off redundant materials of the product 200 under the combined action of the punch 8 and the knife edge 82. So set up, the lower mould is closed back on the whole mould, gear 2 rotation can be stirred to transmission sloping block 1, cam 5 can rotate along with gear 2 through axle 4, and when rotating to required angle, the bellying 52 of cam 5 promotes push rod 6 in the mould, and 6 side directions of push rod promote drift 8, and drift 8 reaches the height of setting for, can amputate unnecessary conductive terminal 201 or other materials, and the work of round is accomplished to back accessible components such as spring, messenger cam 5.

Preferably, the gear 2 is a helical gear 2, the transmission oblique block 1 extends up and down and can move back and forth to push the helical gear 2, and the bottom of the transmission oblique block 1 is provided with a wedge-shaped inclined surface 11 matched with the shape of the concave teeth 22 of the helical gear 2. So set up, transmission sloping block 1 can one-way promotion gear 2 rotates, avoids reverse motion to cause product 200 blank position mistake, influences product 200 yield. And the bottom of the transmission sloping block 1 can be well matched with the concave teeth 22, so that the wear rate is reduced, and the structural stability of the cam cutting structure 100 during operation is improved.

The oblique tooth-shaped gear 2 is further matched with a stop block 3 capable of preventing the gear 2 from reversely rotating, the stop block 3 comprises a pin joint fixing end 31 fixed on a die fixing seat, the stop block 3 can rotate by taking the pin joint fixing end 31 as a shaft 4, and the other end of the stop block 3 is provided with a lateral convex stop concave part 32 which is used for dynamically matching with the concave tooth 22. With such an arrangement, when the gear 2 rotates in the forward direction, the convex teeth 21 can smoothly push the stop concave parts 32 one by one, and when the convex teeth 21 have a tendency of rotating in the reverse direction, the stop concave parts 32 can well support the convex teeth 21 to prevent the gear 2 from rotating in the reverse direction, so that the forward motion of the gear 2 is further ensured, and the yield of the product 200 is improved. In the present embodiment, the stopper block 3 is substantially in the shape of a letter "7", but may be inclined or have another shape in other embodiments.

The other end of the shaft 4 is sleeved with a brake wheel 9, a plurality of spaced concave parts 91 are arranged on the brake wheel 9, the number and arrangement of the concave parts 91 correspond to those of the concave teeth 22 or the convex teeth 21 of the gear 2, and the cam cutting structure 100 is provided with a brake ejector rod 92 which is laterally selectively matched with or separated from the concave parts 91. With the arrangement, when the cam blanking structure 100 needs to be braked or stopped or the speed is adjusted, only the brake ejector rod 92 needs to be pushed, so that the rotation of the shaft 4 is stopped or the rotating speeds of the shaft 4, the gear 2 and the cam 5 are controlled, and the manufacturing speed of the cam blanking structure 100 is adjusted.

The push rod 6 has a cross shape, and includes a horizontal portion 61 and a vertical portion 62, and a through hole 611 penetrating vertically is formed at both sides of the horizontal portion 61 to allow a positioning rod (not shown) to be inserted therethrough, so that the vertical portion 62 moves along a predetermined path. With such an arrangement, when the push rod 6 is subjected to a force in a certain direction, the push rod 6 can be converted into a movement in a predetermined direction, so as to avoid deviation, for example, in the embodiment of fig. 1 to 10, the push rod 6 is set to move in an up-and-down direction, and thus, in cooperation with the punch 8, a preset action on the product 200 can be further realized.

The top of the vertical portion 62 is provided with a circular arc protrusion 621, and the circular arc protrusion 621 is used for interfering with the boss 52 of the cam 5. With this arrangement, the cam 5 can interfere with the arcuate projection 621 in various directions, thereby effectively converting into displacement in a predetermined direction.

The vertical part 62 is provided with a plurality of convex parts 71 which are arranged up and down and extend left and right, the convex parts 71 are provided with upper inclined planes 711 and lower inclined planes 712, the inclination of the upper inclined planes 711 is greater than that of the lower inclined planes 712, the push block 7 is convexly provided with a plurality of concave parts 622 which are arranged up and down and extend left and right, the convex parts 71 are also provided with upper inclined planes 6221 and lower inclined planes 6222, and the inclination of the upper inclined planes 6221 is greater than that of the lower inclined planes 6222. With this arrangement, when the vertical portion 62 moves downward, the upper inclined surface 711 of the convex portion 71 and the upper inclined surface 6221 of the concave portion 622 slide away from each other, so that the push block 7 is pushed laterally, and the punch 8 is pushed to move. The lower

inclined surfaces

6222, 712 may be inclined or even horizontal, so as to prevent the vertical portion 62 from pushing the pushing block 7 by mistake when moving upward.

As shown in fig. 11, a schematic view of a product 200 is shown, but other products 200 may be used in other embodiments of the present invention. The product 200 is a conductive terminal 201 sheet set, the conductive terminal 201 sheet set includes a plurality of conductive terminals 201 arranged at intervals and a material belt 202 connected with all the conductive terminals 201, the cam blanking structure 100 can punch one conductive terminal 201 each time the gear 2 rotates, and when the cam 2 interferes with the cam 5, a part of the conductive terminal 201 can be cut off. By such arrangement, after the required conductive terminal 201 is stamped, redundant materials can be cut off at a specified position, so that the highly automated manufacturing process of the conductive terminal 201 is greatly improved, and the productivity is improved in response. Specifically, as shown in fig. 11, the left side is the product portion without cutting work, and the right side is the cutting gap 203 from which a part of the excess material has been cut.

The present invention also provides an operation method of the cam blanking structure 100, including the cam blanking structure 100, in which the cam blanking structure 100 is a part of the integral mold 10, and the operation method of the cam blanking structure 100 includes: the upper die and the lower die of the die are closed, the gear 2 is stirred by the transmission sloping block 1 to rotate, when the angle is required, the cam 5 pushes the push rod 6, the push rod 6 pushes the punch 8, the punch 8 reaches the set height and is matched with the knife edge 82 to cut off the redundant conductive terminal 201, and after the reset, the cam 5 completes one round of work. With such an arrangement, the cam material cutting structure 100 has the advantages of fast punching, greatly improving the manufacturing capacity of the product 200, and greatly improving the cutting efficiency. In the traditional cylinder cutting method, the punching speed is usually within 300 times per minute, and when the punching speed is greater than 300 times per minute, the response speed of the cylinder cannot keep up, so that the risk of cutting failure exists.

Specifically, the punching speed of the cam blanking structure 100 is more than 600 times per minute. Thus, the cutting efficiency of the product 200 can be greatly improved.

The cam cutting structure 100 is positioned in an integral die, and the cam cutting structure matched with the punch further comprises a stripping plate inlet block 81 and a knife edge cushion block 83 matched with a knife edge 82. With this arrangement, the blanking function of the cam blanking structure 100 can be more effectively achieved.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The utility model provides a cam blank structure which characterized in that: the gear comprises a plurality of convex teeth and concave teeth positioned between two adjacent convex teeth, N is more than or equal to 8, the gear is used for being matched with a transmission inclined block, the transmission inclined block is used for pushing the inclined convex teeth one by one to enable the gear to rotate and further enable the coaxial cam to rotate, a push rod is arranged below the cam, a push block is laterally matched below the push rod, a concave recess and a convex protrusion which are matched with each other are arranged between the push rod and the push block, when the convex part of the cam rotates to be in jacking interference with the push rod, the push rod can be jacked by the convex part to move downwards, the concave recess and the convex part which are matched with each other are separated in a staggered mode, and the push block is laterally pushed to move in a direction away from the push rod, the pushing block is provided with a punch matched with the knife edge, and the punch can be pushed by the pushing block to cut off redundant materials of the product under the combined action of the punch and the knife edge.

2. The cam blanking structure of claim 1, wherein: the gear is a helical gear, the transmission oblique block extends up and down and can move in the front-back direction to push the helical gear, and a wedge-shaped inclined plane matched with the shape of the concave teeth of the helical gear is arranged at the bottom of the transmission oblique block.

3. The cam blanking structure of claim 1, wherein: skewed tooth form still be equipped with on the gear and prevent gear reverse rotation's position piece that ends, it includes a pin joint stiff end to end the position piece, end the position piece can with the pin joint stiff end is rotatory as the axle, it is used for dynamicly to end the position piece other end be equipped with the side direction bellied concave tooth matched with end the position concave part.

4. The cam blanking structure of claim 1, wherein: the other end of the shaft is sleeved with a brake wheel, a plurality of spaced concave parts are arranged on the brake wheel, the number and arrangement of the concave parts correspond to the concave teeth or the convex teeth of the gear, and the cam cutting structure is provided with a brake ejector rod which is laterally matched with or separated from the concave parts selectively.

5. The cam blanking structure of claim 1, wherein: the push rod is cross-shaped and comprises a transverse horizontal part and a vertical part, wherein through holes which penetrate through the horizontal part from top to bottom are formed in two sides of the horizontal part and are used for inserting the positioning rods, and the vertical part can move along a specified route.

6. The cam blanking structure of claim 5, wherein: the top of the vertical part is provided with an arc-shaped protrusion which is used for interfering with the lug boss of the cam.

7. The cam blanking structure of claim 5, wherein: the vertical part is provided with a plurality of left and right extending convex parts which are arranged up and down, the convex parts are provided with upper inclined planes and lower inclined planes, the inclination of the upper inclined planes is greater than that of the lower inclined planes, the push block is convexly provided with a plurality of left and right extending concave parts which are arranged up and down, the convex parts are also provided with upper inclined planes and lower inclined planes, and the inclination of the upper inclined planes is greater than that of the lower inclined planes.

8. The cam blanking structure of claim 1, wherein: the product is a conductive terminal sheet set which comprises a plurality of conductive terminals arranged at intervals and a material belt connected with all the conductive terminals, the cam cutting structure can punch one conductive terminal every time the gear rotates, and when the cam is interfered with the cam, part of the conductive terminals can be cut off.

9. The operation method of the cam blanking structure is characterized in that: the cam blanking structure comprises the cam blanking structure of any one of claims 1 to 8, and the operation method of the cam blanking structure comprises the following steps: the cam blank structure is a part of the die, when the upper die and the lower die of the die are closed, the transmission inclined block stirs the gear to rotate, when the angle is required, the cam pushes the push rod, the push rod pushes the punch, the punch reaches the set height and is matched with the knife edge to cut off redundant conductive terminals, and after the reset, the cam completes the work of one round.

10. The method for operating a cam blanking structure of claim 9, wherein: the punching speed of the cam blanking structure is more than 600 times per minute.