CN215355665U

CN215355665U - Punch head frame and punch machine

Info

Publication number: CN215355665U
Application number: CN202121025141.0U
Authority: CN
Inventors: 彭亚民; 陆天燚; ***; 王俊; 孙益松
Original assignee: European Shield Technology Co ltd
Current assignee: European Shield Technology Co ltd
Priority date: 2021-05-13
Filing date: 2021-05-13
Publication date: 2021-12-31
Anticipated expiration: 2031-05-13

Abstract

The utility model provides a punching head frame and a punching machine. The headstock main part comprises an integrally formed cutter shaft installation part, a main body part and a cutter head fixing part, the cutter shaft installation part is connected to the headstock fixing seat and the cutter shaft installation part and is provided with a cutter shaft installation hole, the main body part is arc-shaped and convex towards one side of the cutter shaft installation part and is provided with a punching groove with an opening opposite to the convex direction, the bottom of the punching groove is an arc-shaped curved surface, and the cutter head fixing part and the cutter shaft installation part are arranged on the other side of the punching groove relatively. The static cutter head is arranged on the inner side wall of the cutter head fixing part.

Description

Punch head frame and punch machine

Technical Field

The utility model relates to the technical field of electro-hydraulic pressure, in particular to a punching machine head frame and a punching machine.

Background

The punching machine is a mechanical device which completes punching by mounting raw materials and enabling a punching die to act on the materials under the driving of a power mechanism. The punching head frame is a main part of the existing hand-held electric hydraulic punching machine. In the existing electric hydraulic punching machine, a punching machine head frame is composed of a head frame with a carrying platform at the bottom and a punching mechanism arranged above the head frame. The punching mechanism is provided with a cutter head which is in accordance with the shape of a product, and when the punching mechanism is used, the cutter head moves to punch a product piece placed on the loading platform into a punched hole which meets the requirement; when the tool bit is punched on a product piece, impact can be generated on the head frame.

The existing punching headstock mostly adopts a linear design, so a line angle exists at the connection position of the straight line. Therefore, the high frequency of the punching action can cause stress concentration at the line corner of the head frame, and the local deformation or cracking of the part can be caused over time, thereby affecting the service life of the head frame. In addition, the center of mass of the headstock in the punching headstock with the existing linear design has larger deviation with the axis, and the problem of uneven stress is easily caused.

SUMMERY OF THE UTILITY MODEL

The utility model provides a punching head frame with high punching strength and a punching machine, aiming at overcoming the defects of the prior art.

In order to achieve the above object, the present invention provides a punching head frame, which includes a head frame fixing base, a head frame main body and a static cutter head. The headstock main part comprises an integrally formed cutter shaft installation part, a main body part and a cutter head fixing part, the cutter shaft installation part is connected to the headstock fixing seat and the cutter shaft installation part and is provided with a cutter shaft installation hole, the main body part is arc-shaped and convex towards one side of the cutter shaft installation part and is provided with a punching groove with an opening opposite to the convex direction, the bottom of the punching groove is an arc-shaped curved surface, and the cutter head fixing part and the cutter shaft installation part are arranged on the other side of the punching groove relatively. The static cutter head is arranged on the inner side wall of the cutter head fixing part.

According to an embodiment of the present invention, the bottom wall of the punching groove is a continuous arc curved surface connecting the inner sidewall of the cutter shaft mounting portion and the inner sidewall of the cutter head fixing portion.

According to an embodiment of the utility model, the bottom wall of the punching groove comprises a first arc connecting section and a second arc connecting section which are connected, the end part of the first arc connecting section is connected with the inner side wall of the cutter shaft mounting part, and the end part of the second arc connecting section is connected with the inner side wall of the cutter head fixing part.

According to an embodiment of the present invention, the main body has at least one light-weight through hole distributed along an arc-shaped direction thereof.

According to an embodiment of the utility model, the end wall of the body portion is planar and flush with the end wall of the arbor mounting portion, both forming an end support plane for the punch head frame.

According to an embodiment of the utility model, the cutter shaft mounting portion is provided with an axial through hole, the static cutter head is detachably embedded and fixed in the axial through hole, the cutter blade portion extends into the punching groove, and the punching headstock further comprises a support rod hinged to the outer wall of the cutter shaft mounting portion.

According to an embodiment of the utility model, the punching head frame further comprises an adjusting rod movably connected to the body part and located at one side of the punching groove, and an end of the adjusting rod extends into the punching groove to adjust the depth of the workpiece placed in the punching groove.

Correspondingly, this embodiment provides still provides a piercing press, its characterized in that, including motor element, pump body subassembly, cylinder assembly, foretell punch head frame and the moving cutter head that connects gradually, headstock fixing base is connected in the hydro-cylinder body in the cylinder assembly, and the arbor in the cylinder assembly passes the arbor mounting hole on headstock fixing base and the arbor installation department and stretches into the punching hole inslot, and the moving cutter head is installed in the terminal of arbor and is relative with quiet cutter head.

According to an embodiment of the utility model, the punching machine further comprises a handle arranged outside the oil cylinder assembly and the pump body assembly, and the handle and the support rod on the punching machine head frame are positioned on the same side.

In summary, in the punching head frame and the punching machine provided by the present invention, the body portion of the head frame main body protrudes in an arc shape to one side, and the bottom of the punching groove is also an arc-shaped curved surface. In the punching process, a punch head assembly consisting of the cutter shaft, the movable cutter head and the static cutter head can apply great pressure to the main body part of the headstock, so that the inner side edge of the headstock is subjected to strong tension, the arc-shaped main body part and the punching groove with the arc bottom surface can decompose the acting force in multiple directions, the stress area is increased, the excessive concentration of stress at a certain point or a certain line is avoided, and the strength of the punching machine head frame during punching is greatly improved.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

Fig. 1 is a schematic structural diagram of an assembled punching head frame and cutter shaft according to an embodiment of the present invention.

Fig. 2 is a schematic diagram illustrating the structure of the headgear body of fig. 1.

Fig. 3 is a schematic structural diagram of a punching machine according to an embodiment of the present invention.

Detailed Description

As shown in fig. 1 and 2, the punching head frame 40 provided in this embodiment includes a head frame fixing base 1, a head frame main body 2, and a static cutter head 3. Headstock main part 2 includes integrated into one piece's arbor installation department 21, this body portion 22 and tool bit fixed part 23, arbor installation department 21 connects and has arbor mounting hole 211 on headstock fixing base 1 and arbor installation department 21, and this body portion 22 has the opening and the protruding opposite direction's of direction punching hole groove 221 that is used for placing work piece 100 to one side arc arch and this body portion 22 at arbor installation department 21 place, and the bottom of punching hole groove 221 is the arc curved surface, and tool bit fixed part 23 sets up in the opposite side of punching hole groove 221 with arbor installation department 21 relatively. The stationary blade 3 is provided on the inner side wall of the blade fixing portion 23.

The main body 22 with the arc-shaped protrusion and the punching groove 23 with the arc-shaped curved bottom in the punching head frame provided by the embodiment greatly increase the stress area of the punching head frame during punching. The pulling force acting on the inner side of the main body part during punching can be transmitted to the whole main body part 22 along with the punching groove and the arc-shaped contour of the main body part, and the stress can not be excessively concentrated on a certain angular point or an edge for a long time, so that the punching head frame is firmer and is not easy to break.

In this embodiment, the bottom wall of the punching groove 221 is a continuous arc curved surface connecting the inner sidewall of the cutter shaft mounting portion and the inner sidewall of the tool bit fixing portion, and the continuous arc curved surface has better force transmission performance. However, the present invention is not limited to this. In other embodiments, the bottom wall of the punching groove may also include a first arc connecting section and a second arc connecting section connected to each other, an end of the first arc connecting section is connected to the inner side wall of the cutter shaft mounting portion, and an end of the second arc connecting section is connected to the inner side wall of the cutter head fixing portion.

In the present embodiment, the end wall of the main body 22 is flat and flush with the end wall of the arbor mounting portion 23, and both form the end supporting plane of the punching head frame 40. When punching, can carry out the operation with terminal support plane butt in region such as bottom surface or wall, not make the piercing press more stable when punching, also alleviateed the degree of difficulty of operating personnel's handheld operation simultaneously. Further, in order to facilitate the holding of the operator, in the embodiment, the main body 22 has two light-weight through holes 222 distributed along the arc-shaped direction. However, the present invention does not limit the number of the lightweight through holes at all.

In this embodiment, the knife shaft mounting portion 23 has an axial through hole 231, the stationary knife head 3 is detachably embedded and fixed in the axial through hole 231, the knife edge portion extends into the punching groove 221, and the punching head frame further includes a support rod 4 hinged to the outer wall of the knife shaft mounting portion 23. The supporting rod 4 can be arranged on the punching machine together with a handle to support the whole punching machine, so that the use is more convenient.

In this embodiment, the punch head further includes an adjusting rod 5 movably connected to the body 22 and located at one side of the punching slot 221, an end of the adjusting rod 5 extends into the punching slot 221, and the depth of the workpiece 100 placed in the punching slot 221 is adjusted. For the workpiece with the length smaller than the depth of the punching groove 221, the end part of the adjusting rod 5 is abutted against the bottom of the workpiece, so that the workpiece can be stably placed in the punching groove 221, and the punching stability is improved.

Correspondingly, as shown in fig. 3, the embodiment further provides a punching machine, which includes a motor assembly 10, a pump body assembly 20, an oil cylinder assembly 30, the punching head frame 40, and a moving head 50. The headstock fixing seat 1 is connected to an oil cylinder body 301 in the oil cylinder assembly 30, a cutter shaft 302 in the oil cylinder assembly 30 penetrates through the headstock fixing seat 1 and a cutter shaft mounting hole 211 on a cutter shaft mounting part and extends into the punching groove 221, and the movable cutter head 50 is mounted at the tail end of the cutter shaft 302 and is opposite to the fixed cutter head 3. The motor assembly 10 is internally provided with a brushless motor which is driven by electricity, a shaft of the brushless motor drives an eccentric shaft in the pump body assembly 20, and the eccentric shaft drives a plunger in the pump body assembly 20 to perform reciprocating work of oil absorption and oil pressing, so that an oil pumping function is realized. Oil enters the cylinder assembly 30. The cutter shaft in the oil cylinder assembly 30 extends outwards under the pressure of oil to drive the movable cutter head 50 to move towards one side where the static cutter head 3 is located, and the punching operation of the workpiece is completed.

In this embodiment, the punching machine further includes a handle 60 disposed outside the cylinder assembly 30 and the pump body assembly 20, and the handle 60 is located on the same side as the support rod 4 on the punch head frame. The inside of the handle 60 is provided with a switch electrically connected to the motor assembly 10.

Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. A punch head frame, comprising:

a head frame fixing seat;

the headstock main body comprises an integrally formed cutter shaft mounting part, a body part and a cutter head fixing part, the cutter shaft mounting part is connected to the headstock fixing seat and is provided with a cutter shaft mounting hole, the body part is arc-shaped and protrudes towards one side of the cutter shaft mounting part, the body part is provided with a punching groove with an opening opposite to the protruding direction, the bottom of the punching groove is an arc-shaped curved surface, and the cutter head fixing part and the cutter shaft mounting part are oppositely arranged on the other side of the punching groove;

and the static cutter head is arranged on the inner side wall of the cutter head fixing part.

2. The punch head frame of claim 1, wherein the bottom wall of the punching groove is a continuous curved surface connecting the inner side wall of the arbor mounting portion and the inner side wall of the bit securing portion.

3. The punch head frame of claim 1, wherein the bottom wall of the punch groove includes a first circular arc connecting section and a second circular arc connecting section connected to each other, an end of the first circular arc connecting section being connected to an inner sidewall of the arbor mounting portion, and an end of the second circular arc connecting section being connected to an inner sidewall of the bit fixing portion.

4. The punch head of claim 1, wherein the body portion has at least one lightweight through hole distributed along an arcuate path thereof.

5. The punch head frame of claim 1 wherein the end wall of the body portion is planar and flush with the end wall of the arbor mounting portion, both forming an end support plane for the punch head frame.

6. The punch head frame of claim 1, wherein the arbor mounting portion has an axial through hole, the stationary blade is detachably fixed in the axial through hole in an embedded manner, and the blade portion extends into the punching groove, the punch head frame further comprises a support rod hinged to an outer wall of the arbor mounting portion.

7. The punch head frame of claim 1 further comprising an adjustment lever movably connected to the body portion and positioned to one side of the punch slot, an end of the adjustment lever extending into the punch slot to adjust the depth to which the workpiece is placed in the punch slot.

8. A punching machine is characterized by comprising a motor assembly, a pump body assembly, an oil cylinder assembly and a punching machine head frame and a moving cutter head which are sequentially connected, wherein the head frame fixing seat is connected with an oil cylinder body in the oil cylinder assembly, a cutter shaft in the oil cylinder assembly penetrates through cutter shaft mounting holes in the head frame fixing seat and the cutter shaft mounting portion and extends into a punching groove, and the moving cutter head is mounted at the tail end of the cutter shaft and is opposite to a static cutter head.

9. The punch of claim 8, further comprising a handle disposed externally of the cylinder assembly and the pump body assembly, the handle being on the same side as the support bar on the punch head frame.