Punching machine for automobile horn elastic piece

Abstract

The utility model discloses a punch press used for an automobile horn elastic piece, which comprises a plurality of bed frames and a hydraulic telescopic unit installed at the top ends of the bed frames, an upper stamping die is installed at the movable end of the hydraulic telescopic unit, and a lower stamping die used for being combined with the upper stamping die and stamping a metal plate is installed at the bottom of each bed frame. A rectangular hollow-out cavity is formed in the lower stamping die, a gear and rack material returning structure is installed in the rectangular hollow-out cavity, a shaft seat is fixed to one side of the surface of the bed frame, a rotating shaft is rotatably installed in the shaft seat, and the rotating shaft is used for driving the gear and rack material returning structure to work. The rotary action of the swing-push type rotary driving mechanism is combined with a gear and rack material returning structure, so that a workpiece can be quickly pushed out, the retention time of the workpiece in a die is greatly shortened, the production continuity is ensured, the material returning action of all the dies can be completed at the same time, and the production bottleneck caused by the delay of a single punching machine is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to punch press technical field, specifically be a kind of punch press for automobile horn spring piece. BACKGROUND

[0002] Punch press plays a vital role in the manufacture of automobile horn spring piece, and its core function is to punch metal materials (such as copper, aluminum or steel) into precise shape and size through mechanical force, to ensure the performance and sound quality of the spring piece. The structure of punch press consists of several key parts, including the frame, drive system, punch, die, feeding device and control system. The frame provides a solid foundation to bear the weight and structure of the equipment. The drive system is responsible for providing power, usually composed of motor, transmission belt and gear, to drive the punch up and down. The punch is the main working part of the punch press, which directly applies pressure for forming and cutting. The die is usually composed of upper and lower dies, and the metal material is pressed into shape in the die. The working principle of punch press mainly relies on plastic deformation. During the punching process, the metal material is fed into the die through the feeding device, and then the punch starts to move up and down, applying pressure to make the metal material plastic deform, and finally forming the desired spring piece shape. However, the current punch press generally works in parallel and synchronously, and the disc-shaped horn spring piece obtained by punching is mainly retained in the lower die and is pushed out by the material withdrawal structure in the lower die to facilitate the operator to perform the unloading and taking operation. That is, the material withdrawal structure cannot push it out of the lower die, and the operator needs to take it out manually, which will occupy a certain amount of time, especially in a high-intensity production environment. This delay may accumulate into a significant production bottleneck, affecting the overall production efficiency. In addition, in a high-intensity production environment, the operator needs to interact with the punch press frequently, especially when multiple punch presses are working simultaneously. The safety risk faced by the worker during the taking operation will also increase exponentially. SUMMARY

[0003] The utility model aims at providing a punch press for automobile horn spring piece. After the hydraulic telescopic unit drives the upper punching die to approach the lower punching die and completes the punching work, the formed disc-shaped horn spring piece is retained in the rectangular hollow cavity of the lower punching die. At this time, the swing push rotary drive mechanism drives the rotating shaft to rotate, so as to push the disc-shaped horn spring piece out of the lower punching die by using the gear and rack material withdrawal structure. The gear and rack material withdrawal structures of the remaining lower punching dies act together through the belt transmission structure to solve the problems raised in the above background technology.

[0004] In order to achieve the above object, the utility model provides the following technical scheme: a punch for automobile horn spring piece, a plurality of bedsteads and hydraulic telescopic unit installed on the top of bedstead, the movable end of hydraulic telescopic unit is installed with upper punch die, the bottom of bedstead is installed with lower punch die for and upper punch die die and punch metal plate piece, the inside of lower punch die is provided with rectangular hollow cavity, the inside of rectangular hollow cavity is installed with gear and rack material returning structure, one side of bedstead surface is fixed with shaft seat, and the inside of shaft seat is rotatably installed with pivot, and pivot is used for driving gear and rack material returning structure work, one side of bedstead bottom is installed with swing push type rotary drive mechanism for driving one pivot rotation, and a plurality of pivots between horizontal direction are installed with belt transmission structure for keeping power connection.

[0005] Preferably, the hydraulic telescopic unit includes a first hydraulic cylinder installed on the top of the bedstead and a plurality of guide columns vertically slidingly installed on the top of the bedstead, the bottom end of the piston rod of the first hydraulic cylinder is fixedly connected with the top end of the upper punch die, and the bottom end of the guide column is fixedly connected with the top end of the upper punch die.

[0006] Preferably, a circular punch groove is arranged at the center position of the top end of the lower punch die and communicates with the rectangular hollow cavity.

[0007] Preferably, the gear and rack material returning structure includes a driving gear disc fixed on one end of the surface of the pivot and an L-shaped rack slidingly installed in the rectangular hollow cavity, and the L-shaped rack and the driving gear disc are in meshing engagement.

[0008] Preferably, a rectangular sliding groove is arranged on the inner wall of one side of the rectangular hollow cavity, and the L-shaped rack and the rectangular sliding groove are in sliding engagement.

[0009] Preferably, the swing push type rotary drive mechanism includes a double-layered tripod fixed on one side of the bottom end of the bedstead, a loop rotatably installed in the double-layered tripod, a second hydraulic cylinder fixed in the loop, and a bent arm fixed on the bottom end of the pivot, and one end of the bent arm and the top end of the piston rod of the second hydraulic cylinder are hingedly connected through a fish eye joint.

[0010] Preferably, the belt transmission structure includes synchronous wheels fixed on the top end of the pivot and a multi-cleat belt wound between the synchronous wheels.

[0011] Compared with the prior art, the utility model discloses the beneficial effects are: a punch for automobile horn spring piece through set up swing and push formula rotary drive mechanism, the structure of the rotation of swing and push formula rotary drive mechanism, the combination gear and rack material return structure, can be pushed out the workpiece quickly, this design greatly reduces the time of workpiece in the mould stagnation, ensure the continuity of production, and all mould material return action can be completed at the same time, avoid the production bottleneck caused by single punch delay, and the operator can keep the safe distance in the stamping and material return process, reduce the injury risk caused by accidental start or workpiece jam, and the automatic material return mechanism also reduces the working strength of the operator, reduces the possibility of fatigue and operation error. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the front view structure schematic drawing of the utility model;

[0013] Figure 2 It is the side view structure schematic drawing of the utility model;

[0014] Figure 3 It is the swing and push formula rotary drive mechanism three-dimensional structure schematic drawing of the utility model;

[0015] Figure 4 It is the bed frame three-dimensional structure schematic drawing of the utility model;

[0016] Figure 5 It is the lower punch die three-dimensional structure schematic drawing of the utility model.

[0017] In the drawing: 1, bed frame, 2, hydraulic telescopic unit, 3, upper punch die, 4, lower punch die, 401, rectangular hollow cavity, 402, circular punching groove, 5, L rack, 6, swing and push formula rotary drive mechanism, 601, double-layer tripod, 602, second hydraulic cylinder, 603, bent arm, 604, back-shaped sleeve, 7, shaft seat, 8, pivot, 9, driving tooth disc, 10, belt transmission structure. DETAILED DESCRIPTION

[0018] The technical scheme in the utility model embodiment will be described clearly and completely below with reference to the drawings in the utility model embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the range protected by the utility model.

[0019] Please refer to Figures 1-5The utility model provides an embodiment: a punch for automobile horn spring piece, including a plurality of bedsteads 1 and the hydraulic telescopic unit 2 of bedstead 1 top end installation, the movable end of hydraulic telescopic unit 2 is installed with upper punch die 3, the bottom of bedstead 1 is installed with the lower punch die 4 for and upper punch die 3 die and punch the metal plate piece, the inside of lower punch die 4 is provided with rectangular hollow cavity 401, rectangular hollow cavity 401's inside is installed with gear rack material returning structure, the central position of lower punch die 4 top is provided with and rectangular hollow cavity 401 intercommunication's circular punch groove 402,

[0020] The surface of the bed frame 1 is fixed with an axle seat 7, and the inside of the axle seat 7 is rotatably installed with a rotating shaft 8, the rotating shaft 8 is used to drive the gear rack material returning structure to work, one side of the bottom end of the bed frame 1 is installed with a swing push type rotary drive mechanism 6 for driving one of the rotating shafts 8 to rotate, and a belt drive structure 10 for maintaining power connection is installed between the rotating shafts 8 in the horizontal direction.

[0021] The hydraulic telescopic unit 2 includes a first hydraulic cylinder installed at the top end of the bed frame 1 and a plurality of guide columns vertically slidingly installed at the top end of the bed frame 1, the bottom end of the piston rod of the first hydraulic cylinder is fixedly connected with the top end of the upper punch die 3, and the bottom end of the guide column is fixedly connected with the top end of the upper punch die 3.

[0022] The gear rack material returning structure includes a driving gear disc 9 fixed to one end of the surface of the rotating shaft 8 and an L-shaped rack 5 slidingly installed in the rectangular hollow cavity 401, the L-shaped rack 5 and the driving gear disc 9 are engaged with each other, a rectangular sliding groove is provided on the inner wall of one side of the rectangular hollow cavity 401, the L-shaped rack 5 is slidingly fitted with the rectangular sliding groove, after the rotating shaft 8 rotates, the L-shaped rack 5 is driven by the driving gear disc 9 to move forward and backward, so that the formed workpiece is actively pushed out of the rectangular hollow cavity 401 by the L-shaped rack 5, and the synchronous material returning mechanism can ensure that all punches can simultaneously perform material returning operation after completing the punching, thereby reducing the downtime of a single punch.

[0023] The swing-push rotary driving mechanism 6 comprises a double-layer tripod 601 fixed on one side of the bottom end of the bed frame 1, a loop 604 rotatably installed in the double-layer tripod 601, a second hydraulic cylinder 602 fixed in the loop 604, and a bent arm 603 fixed on the bottom end of the rotating shaft 8. One end of the bent arm 603 is hingedly connected to the top end of the piston rod of the second hydraulic cylinder 602 through a fish-eye joint. After the upper punch die 3 and the lower punch die 4 are separated, the piston rod of the second hydraulic cylinder 602 is actively elongated to drive the bent arm 603 and the rotating shaft 8 to rotate. In this process, the loop 604 serves to connect the cylinder body of the second hydraulic cylinder 602 and the double-layer tripod 601, so as to ensure that the second hydraulic cylinder 602 stably performs the extension and retraction action. In the stamping process, if the formed disc-shaped horn reed is retained in the lower punch die 4 for a long time, it may be subjected to friction and pressure of the die and the workpiece, resulting in slight deformation or damage of the shape. Through the rapid material withdrawal mechanism, the contact time between the workpiece and the die can be effectively reduced. The gear and rack material withdrawal structure can provide stable pushing force, so as to ensure that the workpiece will not be deformed due to uneven force when being pushed out.

[0024] The belt transmission structure 10 comprises synchronous wheels fixed on the top end of the rotating shaft 8 and a multi-wedge belt wound between the synchronous wheels. The belt transmission structure 10 serves to connect the rotating shafts 8, so that all disc-shaped horn reeds are pushed out under the same condition, reducing the inconsistency in shape or size of the workpiece caused by the operation time difference between different punch presses. The operator does not need to frequently move between multiple punch presses to take the material, reducing the operation errors caused by fatigue of the operator.

[0025] In use, first, the staff opens the hydraulic telescopic unit 2 through the control end of the punch press to work, so that the hydraulic telescopic unit 2 can quickly and accurately drive the upper punch die 3 to approach the lower punch die 4 and complete the stamping work. At this time, the metal plate between the upper punch die 3 and the lower punch die 4 is stamped and formed into a disc-shaped horn reed, and the formed disc-shaped horn reed is retained in the rectangular hollow cavity 401 of the lower punch die 4 due to the self-weight. Then, the staff opens the swing-push rotary driving mechanism 6 through the control end of the punch press to work. The swing-push rotary driving mechanism 6 drives the rotating shaft 8 to rotate, and the gear and rack material withdrawal structure is combined, so that the workpiece in the rectangular hollow cavity 401 can be quickly pushed out. The remaining gear and rack material withdrawal structures are power-connected through the belt transmission structure 10, so that the material withdrawal actions of all dies can be completed at the same time.

Claims

1. A punch for a horn bell of an automobile, characterized by: The application relates to a hydraulic telescopic unit (2) installed on the top end of a plurality of bed frames (1), a movable end of the hydraulic telescopic unit (2) is provided with an upper stamping die (3), the bottom of the bed frame (1) is provided with a lower stamping die (4) used for stamping a metal plate with the upper stamping die (3), the inside of the lower stamping die (4) is provided with a rectangular hollow cavity (401), the inside of the rectangular hollow cavity (401) is provided with a gear and rack material returning structure, one side of the surface of the bed frame (1) is fixed with a shaft seat (7), the inside of the shaft seat (7) is rotatably provided with a rotating shaft (8), the rotating shaft (8) is used for driving the gear and rack material returning structure to work, one side of the bottom end of the bed frame (1) is provided with a swing pushing type rotary driving mechanism (6) used for driving one rotating shaft (8) to rotate, and a plurality of rotating shafts (8) in the horizontal direction are provided with a belt transmission structure (10) used for keeping power connection.

2. The punch machine for the automobile horn diaphragm according to claim 1, characterized in that: The hydraulic telescopic unit (2) comprises a first hydraulic cylinder installed on the top end of the bed frame (1) and a plurality of guide columns vertically and slidably installed on the top end of the bed frame (1), the bottom end of the piston rod of the first hydraulic cylinder is fixedly connected with the top end of the upper stamping die (3), and the bottom end of the guide column is fixedly connected with the top end of the upper stamping die (3).

3. The punch machine for the automobile horn diaphragm according to claim 1, wherein: A circular stamping groove (402) in communication with the rectangular hollow cavity (401) is arranged at the center position of the top end of the lower stamping die (4).

4. The punch machine for the automobile horn diaphragm according to claim 1, wherein: The gear and rack material returning structure comprises a driving gear disc (9) fixed on one end of the surface of the rotating shaft (8) and an L-shaped rack (5) slidably installed in the rectangular hollow cavity (401), and the L-shaped rack (5) and the driving gear disc (9) are in meshing connection.

5. The punch for the automobile horn diaphragm according to claim 4, characterized in that: A rectangular sliding groove is arranged on the inner wall of one side of the rectangular hollow cavity (401), and the L-shaped rack (5) is in sliding connection with the rectangular sliding groove.

6. The punch for the automobile horn diaphragm according to claim 5, characterized in that: The swing pushing type rotary driving mechanism (6) comprises a double-layered triangular frame (601) fixed on one side of the bottom end of the bed frame (1), a loop (604) rotatably installed in the double-layered triangular frame (601), a second hydraulic cylinder (602) fixed in the loop (604), and a bent arm (603) fixed on the bottom end of the rotating shaft (8), one end of the bent arm (603) is hingedly connected with the top end of the piston rod of the second hydraulic cylinder (602) through a fish eye joint.

7. The punch for the bellows of the car horn according to claim 6, characterized in that: The belt transmission structure (10) comprises synchronous wheels fixed on the top end of the rotating shaft (8) and a plurality of V-belts wound between the synchronous wheels.

Images