Connecting device convenient for replacing punch

Abstract

The utility model relates to the field of punches, and discloses a connecting device convenient for replacing punches, which comprises a shell, a punch seat and punches, the punch seat is coaxially clamped and connected in the shell, a group of punch grooves are arranged on one side of the punch seat deviating from the shell, each punch groove is clamped and connected with a punch, and the punch seat is connected with the punch seat in a sleeved mode. On a punching machine or a die needing to frequently change the specification of a punch, the punch needs to be designed into a punch connecting device capable of rapidly replacing the punch, an existing punch is usually connected to the die or a machine through threaded connection or flat key connection or a rapid release device, and the punch is prone to falling off due to vibration in the using process, so that the service life of the punch is prolonged. The utility model provides a connecting device convenient for replacing punches, aiming at increasing the number of the punches of the punch connecting device, enabling the punches and the punch connecting device to be convenient to disassemble and assemble and easy to lock, so that the speed of replacing the punches is improved.

Description

Technical Field

[0001] This utility model relates to the field of punches, specifically a connecting device that facilitates the replacement of punches. Background Technology

[0002] A punch is a tool used in the machining and manufacturing industries. It is mainly used for punching, cutting, and forming operations on workpieces. Punches are usually used in conjunction with stamping presses or dies. Punches are usually made of high-hardness and high-wear-resistant materials, such as high-speed steel and carbide materials, to improve their service life and wear resistance. Punches are widely used in industries such as automobile manufacturing, home appliance production, electronic component manufacturing, and machining. They can be found in almost any situation where forming, cutting, and punching are required.

[0003] In stamping presses or dies that require frequent changes in punch specifications, it is necessary to design a punch connection device that allows for quick punch replacement, facilitating changes as needed during production. Existing punches are typically connected to dies or machinery via threaded connections, keyed connections, or quick-release devices. During use, punches are prone to detachment due to vibration, and gaps or dead angles exist at the connection points, making it easy for dust or debris to accumulate and causing inconvenience for replacement. Furthermore, each punch replacement requires disassembling the old punch before installing the new one. Therefore, we propose a connection device that facilitates punch replacement. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a connecting device that facilitates the replacement of punches, thus solving the aforementioned problems.

[0006] (II) Technical Solution

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solution: a connecting device for easy replacement of punches, comprising a housing, a punch holder, and a punch. The housing is a circular tube structure with a planar opening. The punch holder is coaxially connected inside the housing. A set of punch grooves is provided on the side of the punch holder away from the housing, and a punch is connected in each punch groove.

[0008] Preferably, a connecting pipe is coaxially fixedly connected to one end of the outer plane of the outer shell, a locking hole is provided through the cylindrical surface of the connecting pipe, an internal thread is provided on the cylindrical surface of the locking hole, a groove is provided on the inner cylindrical surface of the outer shell near the plane, an oil nozzle is fixedly connected through the side of the outer shell with the connecting pipe, and a through hole is provided through the cylindrical surface of the outer shell.

[0009] Preferably, a protrusion is fixedly connected to the cylindrical surface of the punch seat near the end opposite to the punch groove. A set of evenly distributed threaded holes are opened on the cylindrical surface of the punch seat. The protrusion is coaxially engaged with the groove on the outer shell and the punch seat is inside the outer shell. The threaded holes correspond coaxially with the through holes on the outer shell.

[0010] Preferably, the cylindrical surface of the punch groove on the punch holder has two symmetrical sliding grooves and two symmetrical retaining grooves. The sliding grooves and retaining grooves are interspersed and evenly distributed around the circumference. The retaining grooves are between the two planes of the punch groove. One end of the sliding groove passes through the side of the punch holder with the punch groove. A circular groove is formed on the cylindrical surface of the punch groove near the protrusion. The sliding groove connects the circular groove with the side of the punch holder with the punch groove. One end of the retaining groove connects to the circular groove.

[0011] Preferably, one end of a spring is fixedly connected to the plane of the punch groove near the protrusion on the punch seat, and the other end of the spring is fixedly connected to a spring plate. The spring plate is inside the punch groove and the punch groove and the spring plate are coaxial.

[0012] Preferably, two symmetrical locking rods are fixedly connected to the cylindrical surface of one end of the punch connection. The locking rods are coaxially locked into the slots on the punch groove, and the side of the punch with the locking rods is in contact with the end of the spring plate away from the spring.

[0013] (III) Beneficial Effects

[0014] Compared with the prior art, this utility model provides a connecting device that facilitates the replacement of the punch, and has the following beneficial effects:

[0015] 1. This connecting device facilitates punch replacement. Multiple punches can be connected to the punch holder. The appropriate number of punches can be connected according to the actual use of the punches in the stamping machine or mold. The punch holder and the housing can rotate, and the position of the rotatable punch corresponds to the material to be stamped. Connecting multiple punches at one time and the rotatable punch position can realize quick punch replacement, thereby improving the stamping efficiency of the stamping machine or mold.

[0016] 2. This easy-to-replace punch connection device allows the punch and punch seat to be quickly engaged via a spring and a retaining groove. The spring's rebound force locks the punch into the retaining groove, securing the punch and punch seat together. During use, the punch does not easily shift, ensuring smooth punching. The punch connection is internal and does not come into contact with the outside, preventing debris from getting stuck between the punch and punch seat and affecting the punch's working effect and replacement efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0019] Figure 3 This is a cross-sectional schematic diagram of the punch holder of this utility model;

[0020] Figure 4 This is a cross-sectional view of the punch installation of this utility model;

[0021] Figure 5 for Figure 4 A magnified view of part A in the diagram;

[0022] Figure 6 This is a cross-sectional view of the punch groove of this utility model;

[0023] Figure 7 for Figure 6 A magnified view of part B in the diagram.

[0024] In the diagram: 1. Outer shell; 2. Connecting pipe; 3. Punch seat; 4. Punch; 5. Oil nozzle; 6. Locking hole; 7. Punch groove; 8. Protrusion; 9. Internal thread; 10. Groove; 11. Threaded hole; 12. Through hole; 13. Spring; 14. Spring plate; 15. Circular groove; 16. Sliding groove; 17. Slot; 18. Connecting rod. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-7 A connecting device for easy replacement of punches includes a housing 1, a punch seat 3 and a punch 4. The housing 1 is a circular tube structure with a planar opening. The punch seat 3 is coaxially connected inside the housing 1. A set of punch grooves 7 are provided on the side of the punch seat 3 away from the housing 1. Each punch groove 7 is connected to a punch 4.

[0027] Furthermore, a connecting pipe 2 is coaxially fixedly connected to one end of the outer plane of the outer shell 1. A locking hole 6 is provided through the cylindrical surface of the connecting pipe 2, and an internal thread 9 is provided on the inner cylindrical surface of the locking hole 6. A groove 10 is provided on the inner cylindrical surface of the outer shell 1 near the plane. An oil nozzle 5 is fixedly connected through the connecting pipe 2 on one side of the outer shell 1. A through hole 12 is provided through the cylindrical surface of the outer shell 1. The connecting pipe 2 is customized with an accurate sleeve shape according to the shape and size of the punch connection on the specific stamping machine or mold. The locking hole 6 and the internal thread 9 are used to lock the connecting pipe 2 and the punch connection on the stamping machine or mold. During the use of the punch, the connecting pipe 2 and the punch connection on the stamping machine or mold will not have relative displacement. The through hole 12 is used to lock and limit the outer shell 1 and the punch seat 3. The oil nozzle 5 is used to add lubricating oil to ensure that the outer shell 1 and the punch seat 3 can rotate. The groove 10 is used for the snap-fit ​​connection between the outer shell 1 and the punch seat 3.

[0028] Furthermore, a protrusion 8 is fixedly connected to the cylindrical surface of the punch holder 3 near the end opposite to the punch groove 7. A set of evenly distributed threaded holes 11 are opened on the cylindrical surface of the punch holder 3. The protrusion 8 is coaxially engaged with the groove 10 on the outer shell 1 and the punch holder 3 is inside the outer shell 1. The threaded holes 11 are coaxially aligned with the through holes 12 on the outer shell 1. The punch groove 7 is used to place the punch 4. The protrusion 8 is used to engage the outer shell 1 and the punch holder 3. The threaded holes 11 are used to lock the outer shell 1 and the punch holder 3 with the through holes 12. The number of threaded holes 11 is determined according to the actual relative rotation angle between the outer shell 1 and the punch holder 3.

[0029] Furthermore, two symmetrical sliding grooves 16 and two symmetrical retaining grooves 17 are provided on the cylindrical surface of the punch groove 7 on the punch seat 3. The sliding grooves 16 and retaining grooves 17 are interspersed and evenly distributed around the circumference. The retaining grooves 17 are between the two planes of the punch groove 7. One end of the sliding groove 16 penetrates the side of the punch seat 3 with the punch groove 7. A circular groove 15 is provided on the cylindrical surface of the punch groove 7 near the protrusion 8. The sliding groove 16 connects the circular groove 15 with the side of the punch seat 3 with the punch groove 7. One end of the retaining groove 17 connects to the circular groove 15. The sliding groove 16 is used for the punch 4 to slide in the punch groove 7 along the direction of the sliding groove 16. The retaining groove 17 is used to limit the punch 4. The circular groove 15 is used for the punch 4 to rotate in the punch groove 7.

[0030] Furthermore, one end of a spring 13 is fixedly connected to the plane of the punch groove 7 near the protrusion 8 on the punch seat 3, and the other end of the spring 13 is fixedly connected to a spring plate 14. The spring plate 14 is inside the punch groove 7 and the punch groove 7 and the spring plate 14 are coaxial. The spring 13 is used to clamp the punch 4, and the spring plate 14 is used to stabilize the vertical compression of the spring 13. When there is no punch 4 in the punch groove 7, the spring 13 is in its normal state, and the normal length of the spring 13 causes the spring plate 14 to exceed the groove 17.

[0031] Furthermore, two symmetrical locking rods 18 are fixedly connected to the cylindrical surface of one end of the punch 4. The locking rods 18 are coaxially locked into the slots 17 on the punch groove 7. The side of the punch 4 with the locking rods 18 is in contact with the end of the spring plate 14 away from the spring 13. The locking rods 18 are used to lock the punch 4 and the punch groove 7. When the punch 4 is in the punch groove 7, the punch 4 is in contact with the spring plate 14, which compresses the spring 13. The locking rods 18 are locked in the slots 17. The rebound force of the spring 13 fixes the locking rods 18 in the slots 17.

[0032] Working principle: Connect the connecting pipe 2 to the punch connection position on the stamping machine or die. The frequently used punch 4 is locked in the punch groove 7. The through hole 12 on the outer shell 1 and the threaded hole 11 on the punch seat 3 are locked with locking bolts and pins. The material to be stamped is fixed in the required position of the punch 4 by the fixture on the stamping machine or die. Start the stamping system on the stamping machine or die to stamp. When it is necessary to replace the existing punch 4 in the punch groove 7, unscrew the locking bolt between the threaded hole 11 and the through hole 12, rotate the punch seat 3 to adjust the position of the punch 4, and then lock the corresponding bolts. The threaded hole 11 and through hole 12, or directly adjust the fixture on the stamping machine or mold, so that the material to be stamped corresponds to the punch 4. When the punch 4 in the punch slot 7 needs to be replaced, press the punch 4 in the direction of the connecting pipe 2 to move the snap rod 18 in the snap groove 17 into the annular groove 15. At this time, the spring 13 is in a compressed state. Rotate the punch 4 ninety degrees to rotate the snap rod 18 to the position of the sliding groove 16. At this time, the spring 13 exerts a rebound force to make the snap rod 18 pop out of the punch slot 7. The snap rod 18 slides out on the sliding groove 16 to pull out the punch 4. When inserting the punch 4, simply reverse the above steps.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A connection device for facilitating the exchange of a punch, comprising a housing (1), a punch seat (3) and a punch (4), characterized in that: The shell (1) is a flat open circular tube structure, the punch holder (3) is coaxially clamped in the shell (1), a group of punch grooves (7) are formed on the surface of the punch holder (3) away from the shell (1), each punch groove (7) is clamped with a punch (4), a groove (10) is formed on the cylindrical surface of the shell (1) close to the flat surface, an oil nozzle (5) is fixedly connected on the surface of the shell (1) with the connecting pipe (2), a through hole (12) is formed on the cylindrical surface of the shell (1), a protrusion (8) is fixedly connected on the cylindrical surface of the punch holder (3) close to the end away from the punch groove (7), a group of uniformly distributed threaded holes (11) are formed on the cylindrical surface of the punch holder (3), the protrusion (8) is coaxially clamped in the groove (10) on the shell (1) and the punch holder (3) is in the shell (1), the threaded holes (11) are coaxially corresponding to the through hole (12) on the shell (1).

2. A connection device for facilitating replacement of a punch according to claim 1, characterized in that: The connecting pipe (2) is coaxially fixed on the flat surface of the shell (1), a locking hole (6) is formed on the cylindrical surface of the connecting pipe (2), and an internal thread (9) is formed on the cylindrical surface of the locking hole (6).

3. The attachment of claim 1 wherein: Two symmetrical sliding grooves (16) and two symmetrical clamping grooves (17) are formed on the cylindrical surface of the punch groove (7) of the punch holder (3), the sliding grooves (16) and the clamping grooves (17) are distributed uniformly in the circumferential direction, the clamping grooves (17) are between the two flat surfaces of the punch groove (7), one end of the sliding groove (16) penetrates the surface of the punch holder (3) with the punch groove (7), a circular groove (15) is formed on the cylindrical surface of the punch groove (7) close to the protrusion (8), the sliding groove (16) is communicated with the circular groove (15) and the surface of the punch holder (3) with the punch groove (7), and one end of the clamping groove (17) is communicated with the circular groove (15).

4. A connection device for facilitating the replacement of a punch according to claim 3, characterized in that: The one end of the spring (13) is fixedly connected to the flat surface of the punch groove (7) close to the protrusion (8) of the punch holder (3), the other end of the spring (13) is fixedly connected with the spring plate (14), the spring plate (14) is in the punch groove (7) and coaxial with the punch groove (7) and the spring plate (14).

5. A connection device for facilitating the replacement of a punch according to claim 4, characterized in that: The cylindrical surface of the one end of the punch (4) is fixedly connected with two symmetrical clamping rods (18), the clamping rods (18) are coaxially clamped in the clamping grooves (17) of the punch groove (7), and the surface of the punch (4) with the clamping rods (18) is attached to the one end of the spring plate (14) away from the spring (13).

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