Integrated punch and die

Abstract

The utility model relates to the field of leather cutting machine especially, point to an integrated punch and tool bit for rotating punch cutting on leather, the integrated punch contains punch body, its characterized in that, punch body is integrated structure for eliminating the blank space on punch body, the natural gap of split type structure is fundamentally eliminated in the force transmission process, the punch force provided by the driving device coincides with the axial force of punch in the case, makes the distribution of force more uniform, the continuity of this force conduction lets the shoulder always be in the ideal working state of no additional stress, eliminates the shaking problem of the outbreak of punch itself.

Description

Technical Field

[0001] This utility model relates to the field of leather cutting machines, and more particularly to an integrated punch and cutter head. Background Technology

[0002] The cutting head of a leather cutting machine integrates a punch for creating holes in the leather surface. This type of punch primarily relies on a combination of stamping and rotation to precisely cut the desired holes in the leather material.

[0003] The segmented structure of the punch causes the cutting edge to curl prematurely:

[0004] Traditional punch knives consist of two parts: the blade and the handle. The threaded connection between the two parts creates play in the shoulder area (the area where the two parts meet). This play causes the blade to wobble slightly radially or shift at an angle when cutting leather, resulting in a slight warping and curling of the blade at an earlier time. Utility Model Content

[0005] To solve the above problems, this utility model provides an integrated punch and cutter head to delay the occurrence of blade rolling.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is: an integrated punch for rotary punching on leather, wherein the integrated punch includes a punch body, characterized in that the punch body is an integrated structure, used to eliminate the blank space on the punch body.

[0007] The beneficial effects of this utility model are:

[0008] The integrated design fundamentally eliminates the natural gaps of the split structure. During the force transmission process, the punching force provided by the drive device coincides with the axial force of the punch, making the force distribution more uniform. This continuity of force transmission keeps the blade shoulder in an ideal working state without additional stress, eliminating the shaking problem caused by the punch itself.

[0009] The aforementioned clearance refers to the excess gap between the two components due to various factors such as processing and assembly.

[0010] The punch body has a hollow structure inside. The negative pressure hole on the shoulder of the punch body creates a negative pressure flow channel inside the punch body after connecting to a negative pressure device. The leather waste residue remaining inside the blade is removed from the blade body under the influence of negative pressure.

[0011] It should be noted that the diameter of the hole inside the handle is larger than the diameter of the hole inside the blade, so that the produced leather scraps will not clog the handle.

[0012] In some embodiments, three negative pressure holes are provided. Of course, more negative pressure holes can be designed as needed. The purpose of setting three holes is to improve the effect of agitating leather scraps, making it easier for leather scraps to come off the blade.

[0013] A cutting head includes a cutting holder and a punching device disposed on the cutting holder. The punching device includes a rotary stamping mechanism and an integrated punch. The rotary stamping mechanism drives the integrated punch to perform a rotary cutting action on leather.

[0014] The rotary stamping mechanism incorporates the principles of cylinders and integrates them into a dedicated transmission structure that drives the integrated punch to rotate. This design improvement allows the punching process to move beyond traditional linear reciprocating motion and instead complete cutting and punching through rotation.

[0015] The rotary stamping mechanism includes: a punching timing wheel, a punch guide rod, a pressure head, a punch piston rod, and a cavity reserved in the tool holder. The punching timing wheel is sleeved on the punch guide rod and is mounted on the tool holder through a bushing, allowing the punching timing wheel to rotate freely relative to the tool holder. At the same time, the inside of the punching timing wheel has a step that matches the shape of the punch guide rod. During the punching process, the positive pressure squeezes the punch guide rod to penetrate deeper into the inside of the punching timing wheel. Through the close contact between the two, the punching timing wheel drives the punch guide rod to rotate.

[0016] The cavity serves as the air chamber through which the air source is introduced. The sealed guide end of the punch piston rod is located in the air chamber. The first piston connection end of the punch piston rod located outside the tool holder is connected to the punch guide rod through the pressure head, so that the punch guide rod performs a longitudinal punching action on the tool holder. The integrated punch is located at the bottom of the punch guide rod.

[0017] A bearing is also provided between the pressure head and the punch guide rod, with an inner ring and an outer ring that can rotate independently, thus ensuring that the two can achieve a basic assembly connection.

[0018] A punch cap is also fitted on the punch guide rod. The punch cap is one of the fulcrums that provides a constraint effect. A spring is also fitted on the punch guide rod. The spring is located between the tool holder and the punch cap. When outputting positive pressure, the punch cap squeezes the spring, and after the punching stage ends, the spring's own elasticity drives the punch guide rod to return to its original position.

[0019] The second piston connection end of the guide rod piston rod is connected to a pressure foot, which extends to the bottom of the integrated punch. The pressure foot has an inner ring surface corresponding to the integrated punch, and the integrated punch passes through the inner ring surface to punch the leather. The above solution is adopted to reduce the use of multiple power sources and achieve the purpose of optimizing the structure. Attached Figure Description

[0020] Figure 1 This is a 3D view of an integrated punch.

[0021] Figure 2 This is a schematic diagram of the integrated punch after it separates from the punch guide rod.

[0022] Figure 3 It is a 3D diagram of the blade.

[0023] Figure 4 yes Figure 3 A stereoscopic view from another perspective.

[0024] Figure 5 It is a three-dimensional diagram of a punching device.

[0025] Figure 6 yes Figure 5 Enlarged diagram of point A.

[0026] Figure 7 yes Figure 5 Enlarged diagram of point B.

[0027] Figure 8 This is a schematic diagram showing the connection between the punch piston rod and the punch guide rod via the pressure head.

[0028] Figure 9 This is a cross-sectional view of a punched synchronous pulley. Detailed Implementation

[0029] like Figure 1-9 As shown, an integrated punch is used for rotary punching on leather. The integrated punch includes a punch body 100, characterized in that the punch body 100 is an integrated structure used to eliminate slack on the punch body 100.

[0030] The beneficial effects of this utility model are:

[0031] The integrated design fundamentally eliminates the natural gaps of the split structure. During the force transmission process, the punching force provided by the drive device coincides with the axial force of the punch, making the force distribution more uniform. This continuity of force transmission keeps the blade shoulder in an ideal working state without additional stress, eliminating the shaking problem caused by the punch itself.

[0032] The aforementioned clearance refers to the excess gap between the two components due to various factors such as processing and assembly.

[0033] The punch body 100 has a hollow structure inside. The negative pressure hole 100a on the blade shoulder makes the inside of the punch body 100 form a negative pressure flow channel after the negative pressure device is connected. The leather waste residue inside the blade 100c is removed from the blade due to the negative pressure.

[0034] It should be noted that the diameter of the hole inside the handle 100b is larger than the diameter of the hole inside the blade 100c, so that the produced leather scraps will not clog the handle 100b.

[0035] In some embodiments, three negative pressure holes 100a are provided. Of course, more negative pressure holes 100a can be designed as needed. The purpose of providing three holes is to improve the effect of disturbing leather scraps, making it easier for leather scraps to detach from the blade 100c.

[0036] A cutting head includes a cutting holder 2 and a punching device disposed on the cutting holder 2. The punching device includes a rotary stamping mechanism and an integrated punch. The rotary stamping mechanism drives the integrated punch to perform a rotary cutting action on leather.

[0037] The rotary stamping mechanism incorporates the principles of cylinders and integrates them into a dedicated transmission structure that drives the integrated punch to rotate. This design improvement allows the punching process to move beyond traditional linear reciprocating motion and instead complete cutting and punching through rotation.

[0038] The rotary stamping mechanism includes: a punching synchronous wheel 31, a punch guide rod 32, a pressure head 33, a punch piston rod 34, and a cavity reserved in the tool holder 2. The punching synchronous wheel 31 is sleeved on the punch guide rod 32 and is mounted on the tool holder 2 through a bushing, so that the punching synchronous wheel 31 can rotate freely relative to the tool holder 2. At the same time, the interior of the punching synchronous wheel 31 is provided with a step 31a that matches the shape of the punch guide rod 32. During the punching process, the positive pressure squeezes the punch guide rod 32 and penetrates deeper into the interior of the punching synchronous wheel 31. Through the close contact between the two, the punching synchronous wheel 31 drives the punch guide rod 32 to rotate.

[0039] The cavity serves as the air chamber through which the air source is introduced. The sealed guide end 34a of the punch piston rod 34 is located in the air chamber. The first piston connection end 34b of the punch piston rod 34 located outside the cutter holder 2 is connected to the punch guide rod 32 through the pressure head 33, so that the punch guide rod 32 performs a longitudinal punching action on the cutter holder 2. The integrated punch is located at the bottom of the punch guide rod 32.

[0040] A bearing is also provided between the pressure head 33 and the punch guide rod 32, with an inner ring and an outer ring that can rotate independently, thereby ensuring that the two can achieve a basic assembly connection.

[0041] A punch cap 35 is also fitted on the punch guide rod 32. The punch cap 35 is one of the fulcrums that provides the constraint effect. A spring 36 is also fitted on the punch guide rod 32. The spring 36 is located between the tool holder 2 and the punch cap 35. When outputting positive pressure, the punch cap 35 squeezes the spring 36. After the punching stage ends, the elastic force of the spring 36 drives the punch guide rod 32 to return to its original position.

[0042] The second piston connecting end 34c of the punch piston rod 34 is connected to a pressure foot 37, which extends below the integrated punch and has an inner ring surface corresponding to the integrated punch. The integrated punch passes through the inner ring surface to punch the leather. The above solution is adopted to reduce the use of multiple power sources and achieve the purpose of optimizing the structure.

[0043] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. An integrated punch for rotary punching on leather, said integrated punch comprising a punch body having a shoulder, characterized in that, The punch body is a one-piece structure used to eliminate the blank space at the shoulder of the punch body.

2. The integrated punch according to claim 1, characterized in that, The punch body has a hollow structure inside. The negative pressure hole on the shoulder of the punch body creates a negative pressure flow channel inside the punch body after connecting to a negative pressure device. The leather waste residue remaining inside the blade is removed from the blade body under the influence of negative pressure.

3. The integrated punch according to claim 2, characterized in that, The diameter of the hole inside the handle is larger than that inside the blade, so that the produced leather scraps will not clog the handle.

4. The integrated punch according to claim 1, characterized in that, There are three negative pressure holes.

5. A cutting head, comprising a cutting head holder and a punching device disposed on the cutting head holder, the punching device comprising a rotary punching mechanism, characterized in that, It also includes an integrated punch as described in any one of claims 1-4, wherein the rotary stamping mechanism drives the integrated punch to perform a rotary cutting action on the leather.

6. A cutting head according to claim 5, characterized in that, The rotary stamping mechanism includes a punching timing wheel, a punch guide rod, a pressure head, a punch piston rod, and a cavity reserved in the tool holder. The punching timing wheel is sleeved on the punch guide rod and is mounted on the tool holder via a bushing, allowing the punching timing wheel to rotate freely relative to the tool holder. Simultaneously, the interior of the punching timing wheel has steps adapted to the shape of the punch guide rod. During the punching process, positive pressure compresses the punch guide rod, pushing it deeper into the interior of the punching timing wheel. Through the close contact between the two, the punching timing wheel drives the punch guide rod to rotate. The cavity serves as an air chamber for the air source, and the sealed guide end of the punch piston rod is located within the air chamber. The first piston connection end of the punch piston rod, located outside the tool holder, is connected to the punch guide rod via the pressure head, causing the punch guide rod to perform a longitudinal punching action on the tool holder. An integrated punch is located at the bottom of the punch guide rod.

7. A cutting head according to claim 6, characterized in that, A bearing is also provided between the pressure head and the punch guide rod.

8. A cutting head according to claim 6, characterized in that, The punch guide rod is also fitted with a punch cap and a spring, with the spring located between the cutter holder and the punch cap.

9. A cutting head according to claim 6, characterized in that, On the punch guide rod, the second piston connection end of the guide rod piston rod is connected to a pressure foot. The pressure foot extends to the bottom of the integrated punch and has an inner ring surface corresponding to the integrated punch. The integrated punch passes through the inner ring surface to punch the leather.

Images