Hydraulic punching machine with punch convenient to replace

Abstract

The hydraulic punching machine comprises a fixing frame and a telescopic mechanism, the telescopic mechanism is arranged on the fixing frame, a connecting rod is arranged at the telescopic end of the telescopic mechanism, the punch is arranged on the connecting rod, and the punch comprises a cutter handle, a cutter head and a locking piece. According to the scheme, the locking column in the locking piece is matched with the protruding block to limit the tool bit in the axial direction, the stability of the tool bit is improved, the locking piece is pulled outwards to enable the locking column to be separated from the locking groove during disassembly, the tool bit is rotated to enable the protruding block to slide into the sliding groove, and then the tool bit is pulled outwards, so that assembly and disassembly are convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to punch press device technical field, concretely relates to hydraulic punch press of punch convenient replacement. BACKGROUND

[0002] In the field such as sheet metal processing, punch press is a necessity, the general punch press includes fixed frame, telescopic mechanism and punch head etc., in the use process, the punch head will cause the wear and tear to lead to the stamping unqualified, for this need to replace the punch head regularly, this is mainly used for replacing the cutter head part of punch head, the replacement of conventional punch head consumes longer time, needs improvement. UTILITY MODEL CONTENT

[0003] To solve the above at least one technical defect, the utility model provides the following technical scheme:

[0004] The application discloses hydraulic punch press of punch convenient replacement, including fixed frame, telescopic mechanism, the telescopic mechanism sets up on the fixed frame, the telescopic mechanism's telescopic end place sets up connecting rod, the connecting rod is provided with punch head, the punch head includes handle, cutter head, lock piece, the first end of handle is connected with connecting rod and the tail end of handle is provided with slot and the groove wall of slot is provided with protruding piece, the first end of cutter head is formed along the axial slide groove and is provided with ring groove along the circumference, the lock slot is set up in the cutter head peripheral wall on the one side of slide groove, the lock piece is set up in the elastic telescopic mode in the tail end peripheral wall of handle, the lock piece has lock column, after the insertion of slot when the slide groove of the first end of cutter head corresponds with protruding piece, rotates cutter head to make protruding piece enter ring groove and make lock slot correspond with lock column, to make cutter head and handle fixed as a whole with the insertion of lock column in lock slot.

[0005] In the scheme, the lock column in lock piece cooperates with protruding piece to limit cutter head in axial direction, which helps to improve the stability of cutter head, and when disassembling, the lock column is separated from lock slot by pulling out lock piece, the protruding piece is slid into slide groove by rotating cutter head, and then it can be pulled out, so that the installation and disassembly are convenient.

[0006] Further, the cutter head is a stepped shaft type, the slide groove, lock slot and ring groove are arranged in the peripheral wall of the first section shaft body in the upper cutter head, and the shaft diameter of the tail section shaft body in the lower cutter head is greater than the diameter of the slot, that is, the tail section shaft body abuts against the tail section end face of the handle, so that the load of the lock column and the protruding piece can be effectively reduced, and the stability and long-term effectiveness of operation are improved.

[0007] Further, the lock piece includes a body and a lock column, the lock column is arranged in the middle of the bottom surface of the body, the tail end peripheral wall of the handle is provided with a mounting groove, the body is arranged in the mounting groove, the through hole formed in the bottom wall of the mounting groove of the lock column extends into the slot, and the body and the groove wall of the mounting groove are connected by an elastic member, so that the lock column can be conveniently inserted and pulled out, and the use is more convenient.

[0008] Further, the first end of the tool handle is threadedly connected with the connecting rod, facilitating installation.

[0009] Further, the fixing frame comprises a bottom plate, a stand column and a cross arm, the stand column is arranged on the bottom plate and the cross arm is arranged at the end of the stand column, and the telescopic mechanism is arranged on the cross arm.

[0010] Compared with the prior art, the utility model has the beneficial effects of:

[0011] 1. The utility model improves the structure of the punch, cooperates with the lock piece and the like to quickly replace the tool bit in the punch, and improves work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0013] Figure 1 It is the structural schematic diagram of the hydraulic punch in embodiment 1;

[0014] Figure 2 It is the installation structure schematic diagram of the tool bit;

[0015] Figure 3 It is the structural schematic diagram of the tool bit;

[0016] Among them, the reference signs are:

[0017] 1, fixing frame;2, telescopic mechanism;3, connecting rod;4, punch;5, body;6, lock column;7, elastic piece;10, bottom plate;11, stand column;12, cross arm;41, tool bit;42, tool handle;43, protruding block;44, ring groove;45, lock groove;46, arrangement groove;47, sliding groove. DETAILED DESCRIPTION

[0018] The utility model will be further described in combination with the drawings and specific embodiments.

[0019] Embodiment 1

[0020] As Figure 1 , Figure 2 , Figure 3As shown, the hydraulic punch press with conveniently replaceable punch in the example comprises a fixed frame 1 and a telescopic mechanism 2, the fixed frame 1 is of a common configuration, specifically comprising a base plate 10, a stand 11 and a cross arm 12, the stand 11 is fixed on the base plate 10 and the end of the stand is horizontally fixed with the cross arm 12, the telescopic mechanism 2 is longitudinally installed on the cross arm 13, the telescopic mechanism 2 is like a pneumatic cylinder, a connecting rod 3 is fixedly connected at the telescopic end of the telescopic mechanism 2, and a punch 4 is fixed at the tail end of the connecting rod 3.

[0021] The punch 4 in the example comprises a shank 42, a head 41 and a locking piece, the head 42 is threadedly connected with the connecting rod 3 at the head end, an insertion slot is formed at the tail end of the shank 42 in the axial direction, and a protrusion 43 is formed on the outer wall of the insertion slot. A positioning groove 46 is formed on the peripheral wall of the tail end of the shank 42, and the locking piece is installed in the positioning groove 46, which comprises a body 5 and a locking column 6, the locking column 6 is formed in the middle of the bottom surface of the plate-shaped body 5, and the body 5 is of a T-shaped structure, the body 5 is in the positioning groove 46, the locking column 6 is inserted into the through hole formed in the bottom wall of the positioning groove 46, the body 5 is connected with the bottom wall of the positioning groove 46 on both sides by elastic members 7 to form elastic telescopic connection, and the elastic members 7 are springs, in the normal state, the locking column is inserted into the insertion slot under the pulling of the spring.

[0022] The head 41 in the example is of a stepped shaft type, the head 41 is inserted into the insertion slot at the upper first segment shaft body, and the tail segment shaft body at the lower part has a larger diameter than the insertion slot, that is, the tail segment shaft body abuts against the tail end surface of the shank, which can effectively reduce the load of the locking piece and the like.

[0023] A sliding groove 47 is formed on the peripheral wall of the first segment shaft body of the head 41 in the axial direction, and a ring groove 44 is formed on the peripheral wall of the head 41 in the circumferential direction, the ring groove 44 is connected with the sliding groove 47, and a locking groove 45 is formed on the peripheral wall of the head 41 at one side of the sliding groove 47 to be inserted into the locking column.

[0024] During installation of the head, the locking piece is pulled out to make the locking column out of the insertion slot, the head is inserted into the insertion slot to abut against the bottom wall of the insertion slot after the sliding groove at the head end corresponds to the protrusion, and the tail segment shaft body end surface of the head abuts against the tail end surface of the shank, the protrusion is at the same height as the ring groove, the head is rotated to make the protrusion enter the ring groove and make the locking groove correspond to the locking column, the force applied to the locking piece is removed, and the locking column is inserted into the locking groove under the action of the spring to make the head and the shank fixed as a whole.

[0025] During disassembly, the locking column is pulled out, the head is rotated to make the protrusion of the head slide into the sliding groove, and then the head is pulled out.

[0026] The above are only preferred embodiments of the present application, and the protection scope of the present application is not limited to the above-mentioned embodiments, and any technical scheme falling within the concept of the present application belongs to the protection scope of the present application. It should be noted that, for ordinary skilled persons in the art, some improvements and refinements without departing from the principles of the present application are also considered to be within the protection scope of the present application.

Claims

1. A hydraulic punch press with easily replaceable punch, comprising a fixed frame and a telescopic mechanism, wherein the telescopic mechanism is mounted on the fixed frame, a connecting rod is provided at the telescopic end of the telescopic mechanism, and a punch is mounted on the connecting rod, characterized in that, The punch includes a handle, a cutter head, and a locking element. The first end of the handle is connected to a connecting rod, and a slot is provided at the tail end of the handle, with a protrusion on the wall of the slot. The first end of the cutter head has an axially formed sliding groove and a circumferentially formed an annular groove, which is connected to the sliding groove. A locking groove is provided on the peripheral wall of the cutter head on one side of the sliding groove. A locking element is elastically telescopically provided on the peripheral wall of the tail end of the handle. The locking element has a locking pin. After the sliding groove and protrusion at the first end of the cutter head correspond, the cutter head is inserted into the slot. The cutter head is rotated so that the protrusion enters the annular groove and the locking groove corresponds to the locking pin. The locking pin is inserted into the locking groove to fix the cutter head and the handle together.

2. The hydraulic punch press with convenient punch replacement as described in claim 1, characterized in that: The cutter head is a stepped shaft type. The upper first section of the shaft is provided with a sliding groove, a locking groove and an annular groove on its peripheral wall, and the lower tail section of the shaft has a diameter larger than the diameter of the slot.

3. The hydraulic punch press with convenient punch replacement as described in claim 1, characterized in that: The locking component includes a body and a locking pin. The locking pin is located in the middle of the bottom surface of the body. A mounting groove is provided on the peripheral wall of the tail end of the knife handle. The body is located in the mounting groove, and the locking pin has a through hole formed on the bottom wall of the mounting groove that extends into the slot. The body and the wall of the mounting groove are connected by an elastic element.

4. The hydraulic punch press with convenient punch replacement as described in claim 1, characterized in that: The head end of the tool holder is threadedly connected to the connecting rod.

5. The hydraulic punch press with convenient punch replacement as described in claim 1, characterized in that: The fixing frame includes a base plate, a column and a cross arm. The base plate is provided with a column and the end of the column is provided with a cross arm. The cross arm is provided with a telescopic mechanism.

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