Automatic stamping device for sheet metal part machining

Abstract

The utility model discloses an automatic stamping device for machining sheet metal parts, which comprises a Y-shaped hollow vertical frame and U-shaped arms slidably mounted on the left outer wall and the right outer wall of the Y-shaped hollow vertical frame, and upper square head stamping dies are fixed on the left outer wall and the right outer wall of each U-shaped arm. A lifting unit used for driving the U-shaped arm and the upper square head stamping die to slide in the Z-axis direction is installed on the outer wall of one side of the Y-shaped hollow vertical frame, machine tables are arranged on the two sides of the Y-shaped hollow vertical frame, and lower square groove stamping dies matched with the upper square head stamping die and used for stamping plate-shaped workpieces are installed at the top ends of the machine tables. A cavity is formed in the lower square groove stamping die. According to the utility model, the formed workpiece can be automatically ejected out, and the device can continuously and stably run in a punching period without being limited by waiting of an ejection step or manual processing, so that the workpiece can be effectively ensured to be stably ejected out.

Description

Technical Field

[0001] The utility model relates to the technical field of stamping, in particular to an automatic stamping device for sheet metal processing. Background Art

[0002] The stamping device for U-shaped sheet metal parts is a special equipment, which is mainly used to process metal sheets into parts with U-shaped structures through stamping technology. It is widely used in the automotive, home appliance and other industries. The frame of this type of stamping device serves as the basic structure of the device, providing stable support and rigidity. The feeding system is responsible for accurately feeding the metal sheets into the stamping area. It usually includes a coiling device or an automatic feeding device to ensure the accurate position of the sheet during the stamping process. The stamping parts are composed of a die and an ejector pin. The die is divided into an upper die and a lower die. The impact force is applied by the ejector pin, causing the metal sheet to undergo plastic deformation during the stamping process to form a U-shaped structure. The drive system provides the power required for the stamping process. It can be a hydraulic system, a mechanical transmission system or an electric drive system. The appropriate method is selected according to the needs. The control system is the intelligent core of the entire device. It monitors and adjusts stamping parameters such as impact force, position and speed through the PLC controller to ensure that the stamping process is accurate and stable. However, at the current stage, after the stamping device completes the stamping work of the U-shaped sheet metal, the formed U-shaped sheet metal part is generally retained in the lower stamping die. The elastic ejector of the lower stamping die needs to eject the U-shaped sheet metal part by itself. However, due to the high contact pressure between the U-shaped sheet metal part and the lower stamping die, the elastic ejector often fails to move. At this time, the staff needs to manually remove the workpiece, which means that after each stamping cycle, the operator needs to intervene when the machine is stopped, which affects the blanking and withdrawing efficiency of the stamping device. Utility Model Content

[0003] The purpose of the utility model is to provide an automatic stamping device for sheet metal processing. When the lifting unit drives the upper head stamping die to separate from the lower slot stamping die, the U-arm, the two-way gear transmission structure and the pulley transmission structure synchronously drive the cam-type rotary pushing structure to work, and the cam-type rotary pushing structure is used to push the inverted U-shaped stripping plate upward, so that the inverted U-shaped stripping plate ejects the U-shaped sheet metal formed by the lower slot stamping die, thereby completing the ejection operation of the workpiece by itself, realizing a stable and reliable ejection action, and solving the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automatic stamping device for sheet metal processing, comprising a Y-shaped hollow stand and U-shaped arms slidably mounted on the left and right outer walls of the Y-shaped hollow stand, and upper head stamping dies are fixed on the left and right outer walls of the U-shaped arm, a lifting unit for driving the U-shaped arm and the upper head stamping die to slide on the Z axis is installed on one side outer wall of the Y-shaped hollow stand, a machine table is provided on both sides of the Y-shaped hollow stand, and a lower slot stamping die is installed on the top of the machine table for cooperating with the upper head stamping die and stamping a plate-shaped workpiece, and a cavity is provided inside the lower slot stamping die , and convex plates are fixed on both inner walls of the cavity, and an inverted U-shaped stripping plate is slidably installed in the cavity above the two convex plates, and a cam-type rotary pushing structure is provided inside the cavity below the inverted U-shaped stripping plate. Pulley transmission structures are provided on both sides of the back of the Y-shaped hollow stand, and a two-way gear transmission structure is installed on the outer wall of the U-shaped arm close to the Y-shaped hollow stand. The two-way gear transmission structure drives the cam-type rotary pushing structure to move through the pulley transmission structure, and a control switch is installed on one side of the surface of the Y-shaped hollow stand, and the output end of the control switch is electrically connected to the input end of the lifting unit.

[0005] Preferably, the lifting unit adopts a cylinder, a right-angle seat is installed on the outer wall of one side of the Y-shaped hollow stand, the cylinder is installed on the top of the right-angle seat, and the bottom end of the piston rod of the cylinder is fixedly connected to the top of the U-shaped arm.

[0006] Preferably, the bidirectional gear transmission structure includes an H-shaped steel plate fixed on the outer wall of one side of the U-arm, racks fixed on the left and right outer walls of the H-shaped steel plate, and a longitudinal axis rotatably installed on both sides of the back of the Y-shaped hollow stand. A driven gear is installed at one end of the surface of the longitudinal axis, and the driven gear and the rack are engaged with each other.

[0007] Preferably, the cam-type rotary pushing structure includes a driven shaft rotatably installed on one side of the cavity and a cam unit fixed at one end of the surface of the driven shaft. The top wall of the inverted U-shaped stripping plate is provided with a protrusion, the lower surface of the protrusion is in contact with the upper surface of the cam unit, and the driven shaft and the longitudinal shaft are powered by a pulley transmission structure.

[0008] Preferably, the pulley transmission structure includes a synchronous pulley installed at the same end of the driven shaft and the longitudinal shaft, and a poly-V belt wound between the two synchronous pulleys.

[0009] Preferably, the inverted U-shaped stripping plate, the protruding portion and the cam unit are all made of alloy steel.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows: the automatic stamping device for sheet metal processing is equipped with a two-way gear transmission structure and a cam-type rotary ejection structure and other structures that cooperate with each other. The cam-type rotary ejection structure is used to eject the U-shaped sheet metal to the outside of the lower groove stamping die, so that the formed workpiece is ejected by itself. During the stamping cycle, the device can operate continuously and stably without being restricted by waiting or manual processing of the ejection step, effectively ensuring that the workpiece can be ejected stably, and no operator intervention or manual deduction of the workpiece is required, thereby shortening the workpiece processing cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model Figure 1 ;

[0012] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model Figure 2 ;

[0013] Figure 3 This is a rear view structural diagram of the utility model;

[0014] Figure 4 This is a side structural diagram of the present utility model;

[0015] Figure 5 For this utility model Figure 3 A in the middle is an enlarged structural diagram;

[0016] Figure 6 It is a schematic diagram of the three-dimensional structure of the inverted U-shaped stripping plate of the present invention.

[0017] In the figure: 1. Y-shaped hollow frame; 2. Machine table; 3. U-shaped arm; 4. Lifting unit; 5. Upper head stamping die; 6. Lower slot stamping die; 601. Cavity; 602. Convex plate; 603. Inverted U-shaped stripping plate; 604. Raised portion; 7. Control switch; 8. Cam-type rotary ejection structure; 801. Driven shaft; 802. Cam unit; 9. Pulley transmission structure; 10. Bidirectional gear transmission structure. DETAILED DESCRIPTION

[0018] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0019] See also Figure 1-6, the utility model provides an embodiment: an automatic stamping device for sheet metal processing, comprising a Y-shaped hollow stand 1 and a U-shaped arm 3 slidably mounted on the left and right outer walls of the Y-shaped hollow stand 1, and an upper head stamping die 5 is fixed on the left and right outer walls of the U-shaped arm 3, and a lifting unit 4 for driving the U-shaped arm 3 and the upper head stamping die 5 to slide on the Z axis is installed on one side outer wall of the Y-shaped hollow stand 1, and a machine table 2 is provided on both sides of the Y-shaped hollow stand 1, and a lower groove stamping die 6 is installed on the top of the machine table 2 for cooperating with the upper head stamping die 5 and stamping a plate-shaped workpiece, and a cavity 601 is provided inside the lower groove stamping die 6, and the two inner sides of the cavity 601 are A convex plate 602 is fixed on each wall, an inverted U-shaped stripping plate 603 is slidably installed in the cavity 601 above the two convex plates 602, a cam-type rotary pushing structure 8 is provided inside the cavity 601 below the inverted U-shaped stripping plate 603, a pulley transmission structure 9 is provided on both sides of the back of the Y-shaped hollow stand 1, a bidirectional gear transmission structure 10 is installed on the outer wall of the side of the U-shaped arm 3 close to the Y-shaped hollow stand 1, and the bidirectional gear transmission structure 10 drives the cam-type rotary pushing structure 8 to move through the pulley transmission structure 9, and a control switch 7 is installed on one side of the surface of the Y-shaped hollow stand 1, and the output end of the control switch 7 is electrically connected to the input end of the lifting unit 4;

[0020] The lifting unit 4 adopts a cylinder, and a right-angle seat is installed on the outer wall of one side of the Y-shaped hollow stand 1. The cylinder is installed on the top of the right-angle seat, and the bottom end of the piston rod of the cylinder is fixedly connected to the top of the U-shaped arm 3. The lifting unit 4 adopts a cylinder, and the cylinder is used to drive the U-shaped arm 3 and the upper head stamping die 5 on the outer walls on both sides of the U-shaped arm 3 to rise and fall together, thereby realizing the function of double-station synchronous stamping and forming workpieces, and can form two U-shaped sheet metal parts at one time, thereby increasing its workpiece forming capacity per unit time;

[0021] The bidirectional gear transmission structure 10 includes an H-shaped steel plate fixed to the outer wall of one side of the U-shaped arm 3, racks fixed to the left and right outer walls of the H-shaped steel plate, and a longitudinal shaft rotatably mounted on both sides of the back of the Y-shaped hollow frame 1. A driven gear is mounted on one end of the longitudinal shaft surface, and the driven gear and the rack are meshed with each other.

[0022] The cam type rotary pushing structure 8 includes a driven shaft 801 rotatably mounted on one side of the cavity 601 and a cam monomer 802 fixed at one end of the surface of the driven shaft 801. The top wall of the inverted U-shaped stripping plate 603 is provided with a protrusion 604. The lower surface of the protrusion 604 contacts the upper surface of the cam monomer 802. The driven shaft 801 and the longitudinal shaft are connected by a pulley transmission structure 9. The pulley transmission structure 9 includes a synchronous wheel mounted on the driven shaft 801 and the same end of the longitudinal shaft and a multi-V belt wound between the two synchronous wheels. When the U-arm 3 and the two-way gear transmission structure 10 move upward, the U-arm 3 drives the H-shaped steel plate in the two-way gear transmission structure 10 and the racks on the left and right side walls of the H-shaped steel plate to move upward, and the rack drives the longitudinal shaft to rotate through the driven gear, and then the longitudinal shaft uses the synchronous wheel and the multi-V belt to drive the driven shaft 801 in the cam type rotary pushing structure 8 to rotate;

[0023] The inverted U-shaped stripping plate 603, the raised portion 604 and the cam unit 802 are all made of alloy steel. When the U-arm 3 moves upward, the driven shaft 801 and the cam unit 802 rotate counterclockwise, and the cam unit 802 contacts the raised portion 604 and causes the raised portion 604, the inverted U-shaped stripping plate 603 and the U-shaped sheet metal to move upward, thereby ejecting the formed U-shaped sheet metal from the lower groove stamping die 6. This structure can stably and reliably eject the U-shaped sheet metal from the stamping die, and ensure the consistent ejection effect of each workpiece, avoiding production quality fluctuations caused by improper human operation.

[0024] When the embodiment of the present application is in use, the staff first places the plate-shaped workpiece to be stamped on the top of the lower slot stamping die 6, and then turns on the lifting unit 4 by controlling the switch 7 to work. The lifting unit 4 then drives the upper head stamping die 5 downward until the bottom end of the upper head stamping die 5 presses the sheet metal into the lower slot stamping die 6. In this process, the bottom end of the upper head stamping die 5 presses the sheet metal into the lower slot stamping die 6 and stamps it into a U-shaped structure to form a U-shaped sheet metal part. At this time, the bottom end of the U-shaped sheet metal part contacts the upper surface of the inverted U-shaped stripping plate 603. When the upper head stamping die 5 descends to the limit position, the U-shaped sheet metal part also completes the stamping and forming work. Then the lifting unit 4 drives the U-arm 3 and the upper head stamping die 5 to move upward together. During the upward movement of the U-arm 3, the U-arm 3 will drive the bidirectional gear transmission structure 10 upward, and the bidirectional gear transmission structure 10 will drive the cam type rotary pushing structure 8 to move through the pulley transmission structure 9, and the cam type rotary pushing structure 8 will be used to force the protrusion 604, the inverted U-shaped material return plate 603 and the formed U-shaped sheet metal to move upward, so that the cam type rotary pushing structure 8 will be used to eject the U-shaped sheet metal to the outside of the lower groove stamping die 6, so that the formed workpiece can be ejected by itself. During the stamping cycle, the device can operate continuously and stably without being restricted by waiting or manual processing of the ejection step, effectively ensuring that the workpiece can be ejected stably, and no operator intervention or manual deduction of the workpiece is required, thereby shortening the workpiece processing cycle and improving the operating efficiency of the device.

Claims

1. An automatic stamping device for sheet metal processing, characterized in that: The invention comprises a Y-shaped hollow stand (1) and a U-shaped arm (3) slidably mounted on the left and right outer walls of the Y-shaped hollow stand (1), and an upper head punching die (5) is fixed on the left and right outer walls of the U-shaped arm (3), and a lifting unit (4) for driving the U-shaped arm (3) and the upper head punching die (5) to slide on the Z axis is installed on one outer wall of the Y-shaped hollow stand (1), and a machine table (2) is provided on both sides of the Y-shaped hollow stand (1), and a lower slot punching die (6) is installed on the top of the machine table (2) for cooperating with the upper head punching die (5) and punching a plate-shaped workpiece, a cavity (601) is provided inside the lower slot punching die (6), and convex plates (602) are fixed on both inner walls of the cavity (601), and the two An inverted U-shaped material stripping plate (603) is slidably installed in the cavity (601) above the convex plate (602), a cam-type rotary push structure (8) is provided inside the cavity (601) below the inverted U-shaped material stripping plate (603), a pulley transmission structure (9) is provided on both sides of the back of the Y-shaped hollow stand (1), a bidirectional gear transmission structure (10) is installed on the outer wall of the side of the U-shaped arm (3) close to the Y-shaped hollow stand (1), and the bidirectional gear transmission structure (10) drives the cam-type rotary push structure (8) to move through the pulley transmission structure (9), and a control switch (7) is installed on one side of the surface of the Y-shaped hollow stand (1), and the output end of the control switch (7) is electrically connected to the input end of the lifting unit (4).

2. The automatic punching device for sheet metal processing according to claim 1, characterized in that: The lifting unit (4) adopts a cylinder, a right-angle seat is installed on the outer wall of one side of the Y-shaped hollow stand (1), the cylinder is installed on the top of the right-angle seat, and the bottom end of the piston rod of the cylinder is fixedly connected to the top end of the U-shaped arm (3).

3. The automatic punching device for sheet metal processing according to claim 1, characterized in that: The bidirectional gear transmission structure (10) comprises an H-shaped steel plate fixed on the outer wall of one side of the U-shaped arm (3), racks fixed on the left and right outer walls of the H-shaped steel plate, and a longitudinal shaft rotatably mounted on both sides of the back of the Y-shaped hollow stand (1), a driven gear being mounted on one end of the longitudinal shaft surface, and the driven gear and the rack being meshed with each other.

4. The automatic punching device for sheet metal processing according to claim 3, characterized in that: The cam-type rotary push structure (8) comprises a driven shaft (801) rotatably mounted on one side of the interior of the cavity (601) and a cam unit (802) fixed at one end of the surface of the driven shaft (801); a protrusion (604) is mounted on the top wall of the inverted U-shaped stripping plate (603); the lower surface of the protrusion (604) contacts the upper surface of the cam unit (802); and the driven shaft (801) and the longitudinal axis are connected in power via a pulley transmission structure (9).

5. The automatic punching device for sheet metal processing according to claim 4, characterized in that: The pulley transmission structure (9) comprises a synchronous wheel installed on the driven shaft (801) and the same end of the longitudinal axis, and a multi-V belt wound between the two synchronous wheels.

6. The automatic punching device for sheet metal processing according to claim 4, characterized in that: The inverted U-shaped stripping plate (603), the raised portion (604) and the cam unit (802) are all made of alloy steel.

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