Multi-station screw heading machine

Abstract

The utility model discloses a multi-station screw heading machine which comprises a base, a punching mechanism, a discharging mechanism and a forming assembly. The forming assembly comprises a support, a servo motor is fixedly installed on the support through a motor base, a rotating shaft is fixedly installed on an output shaft of the servo motor, a rotating disc is fixedly installed on the rotating shaft, four circular holes formed in an annular array mode are formed in the rotating disc, and the punching mechanism and the discharging mechanism are arranged on the two sides of the rotating disc respectively. The end, close to the stamping mechanism, of the round hole shrinks inwards to form a baffle ring, the end, close to the discharging mechanism, of the round hole protrudes to form a sleeve, external threads are arranged on the outer side of the sleeve, a forming die is placed in the round hole and provided with a screw head forming section and a screw rod section which are arranged in a penetrating mode, and the forming die is provided with an abutting ring abutting against the baffle ring. The outer side of the sleeve is in threaded connection with a cap body, the cap body abuts against the forming die, and a through hole allowing the discharging push rod to penetrate through is formed in the cap body. The multi-station screw heading machine has the advantages of convenience in die replacement, high efficiency and convenience in operation.

Description

Technical Field

[0001] This utility model relates to the field of screw heading machine technology, and in particular to a multi-station screw heading machine. Background Technology

[0002] Heading machines are a type of cold heading equipment, primarily used for forming the heads of screws. Their working principle involves straightening, feeding, cutting, and feeding the wire into the main die; the first stroke for initial forging; and the second stroke to remove the formed blank. The entire process is completed in one continuous operation, with a production capacity of approximately 200 screws per minute. It is considered a technologically advanced product. Heading machines can manufacture common products such as self-tapping screws, electrical screws, miniature screws, internal and external hex bolts, self-drilling screws, and fiberboard screws.

[0003] Different molds are needed to head screws of different diameters. Currently used heading machines require complete disassembly and replacement when changing molds, which is time-consuming, labor-intensive, and affects output and efficiency. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the technical problem to be solved by this patent application is how to provide a multi-station screw heading machine that is easy to change molds, highly efficient, and easy to operate.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A multi-station screw heading machine includes a base, a stamping mechanism, a feeding mechanism, and a forming component;

[0007] The stamping mechanism includes a vertical plate fixedly installed on the base, two stamping cylinders fixedly installed on the vertical plate, the cylinder rods of the stamping cylinders passing through the vertical plate and fixedly installed with punches; the unloading mechanism includes a support fixedly installed on the base, a cylinder seat fixedly installed on the support, a discharge cylinder fixedly installed on the cylinder seat, and a discharge push rod fixedly installed on the cylinder rod of the discharge cylinder.

[0008] The forming assembly includes a bracket, on which a servo motor is fixedly mounted via a motor mount. A rotating shaft is fixedly mounted on the output shaft of the servo motor, and a turntable is fixedly mounted on the rotating shaft. The turntable has four circular holes arranged in a ring array. The stamping mechanism and the unloading mechanism are respectively located on both sides of the turntable. The ends of the circular holes near the stamping mechanism are recessed to form a retaining ring, and the ends of the circular holes near the unloading mechanism are protruding to form a sleeve. The outer side of the sleeve has external threads. A forming mold is placed inside the circular holes. The forming mold has a through-hole forming section and a screw section, and an abutment ring that abuts against the retaining ring. A cap is threadedly connected to the outer side of the sleeve, and the cap abuts against the forming mold. The cap has a through hole that allows the unloading push rod to pass through.

[0009] This design incorporates four circular holes arranged in a ring array, enabling multi-station integration. The four holes serve as the loading, first punch, second punch, and unloading stations, integrating four processes to improve efficiency. A servo motor drives a turntable to rotate, facilitating station switching. During stamping, the punch shapes the raw material placed in the mold. Upon moving to the unloading station, the unloading mechanism ejects the product from the mold. Two punches and one unloading push rod are positioned corresponding to the three circular holes to avoid interference. The cap body has a through hole for the unloading push rod to pass through. In this application, the mold length is greater than the screw length. After heading, the screw tail is cut off in subsequent processes to prevent deformation between the screw and the through hole in the cap body from affecting quality.

[0010] The forming mold has a through-type screw head forming section and a screw section. The diameter of the screw section matches the diameter of the raw material. The punch presses the end of the raw material and forms the screw head by punching the screw head. The screw head forming operation is achieved by punching the screw head once and twice.

[0011] When a mold needs to be changed, simply unscrew the cap and remove the forming mold. During replacement, place the forming mold into the round hole, using the retaining ring and abutment ring to create a blocking and limiting effect. Then, thread the cap onto the sleeve to install the forming mold. Mold replacement can be completed without disassembling the turntable, improving efficiency.

[0012] The retaining ring is fixed with several positioning pins, and the abutting ring has positioning holes that are inserted and engaged with the positioning pins.

[0013] The cap body has a protruding insert ring, which is located between the forming mold and the sleeve.

[0014] A handle is fixed to the outer side of the cap.

[0015] The cap body has an outer ring that abuts against the turntable.

[0016] The motor base has a ring, and a thrust ball bearing is mounted on the ring facing the turntable.

[0017] In summary, this multi-station screw heading machine has the advantages of easy mold changing, high efficiency, and convenient operation. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of a multi-station screw heading machine according to the present invention.

[0019] Figure 2 for Figure 1 A diagram showing another location.

[0020] Figure 3 for Figure 2 The main view.

[0021] Figure 4 for Figure 3 A schematic diagram of another orientation along the cross section AA.

[0022] Figure 5 for Figure 4 Enlarged diagram of point B in the middle. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings. In the description of the present invention, it should be understood that directional terms such as "upper," "lower," "top," and "bottom" indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are used only for the convenience of describing the present invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of the present invention. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0024] like Figure 1-5 As shown, a multi-station screw heading machine includes a base 1, a stamping mechanism, a feeding mechanism, and a forming assembly;

[0025] The stamping mechanism includes a vertical plate 2 fixedly installed on the base, two stamping cylinders 3 fixedly installed on the vertical plate, the cylinder rods of the stamping cylinders passing through the vertical plate and fixedly installed with punches 4; the unloading mechanism includes a support 5 fixedly installed on the base, a cylinder seat fixedly installed on the support, a discharge cylinder 6 fixedly installed on the cylinder seat, and a discharge push rod 7 fixedly installed on the cylinder rod of the discharge cylinder.

[0026] The forming assembly includes a bracket 8, on which a servo motor 9 is fixedly mounted via a motor mount. A rotating shaft is fixedly mounted on the output shaft of the servo motor, and a turntable 10 is fixedly mounted on the rotating shaft. The turntable has four circular holes 11 arranged in a ring array. The stamping mechanism and the unloading mechanism are respectively located on both sides of the turntable. The end of the circular hole near the stamping mechanism is recessed to form a retaining ring 12, and the end of the circular hole near the unloading mechanism is protruded to form a sleeve 13. The outer side of the sleeve is provided with external threads. A forming mold 14 is placed inside the circular hole. The forming mold has a through-hole forming section 15 and a screw section 16. The forming mold has an abutment ring 17 that abuts against the retaining ring. The outer side of the sleeve is threadedly connected to a cap 18, which abuts against the forming mold. The cap has a through hole 19 that allows the unloading push rod to pass through.

[0027] This design incorporates four circular holes arranged in a ring array, enabling multi-station integration. The four holes serve as the loading, first punch, second punch, and unloading stations, integrating four processes to improve efficiency. A servo motor drives a turntable to rotate, facilitating station switching. During stamping, the punch shapes the raw material placed in the mold. Upon moving to the unloading station, the unloading mechanism ejects the product from the mold. Two punches and one unloading push rod are positioned corresponding to the three circular holes to avoid interference. The cap body has a through hole for the unloading push rod to pass through. In this application, the mold length is greater than the screw length. After heading, the screw tail is cut off in subsequent processes to prevent deformation between the screw and the through hole in the cap body from affecting quality.

[0028] The forming mold has a through-type screw head forming section and a screw section. The diameter of the screw section matches the diameter of the raw material. The punch presses the end of the raw material and forms the screw head by punching the screw head. The screw head forming operation is achieved by punching the screw head once and twice.

[0029] When a mold needs to be changed, simply unscrew the cap and remove the forming mold. During replacement, place the forming mold into the round hole, using the retaining ring and abutment ring to create a blocking and limiting effect. Then, thread the cap onto the sleeve to install the forming mold. Mold replacement can be completed without disassembling the turntable, improving efficiency.

[0030] The punch and the cylinder rod of the stamping cylinder are fixedly connected by bolts, which facilitates replacement.

[0031] In practice, the retaining ring is fixed with several positioning pins 20, and the abutment ring has positioning holes that engage with the positioning pins. This prevents the forming mold from rotating during use and improves stability.

[0032] In practice, the cap body is provided with a protruding insert ring 21, which is located between the forming mold and the sleeve. This reduces vibration of the forming mold and improves stability.

[0033] During implementation, a handle 22 is fixed to the outside of the cap body to facilitate rotation of the cap body.

[0034] In practice, the cap body has an outer ring 23 that abuts against the turntable. This increases the contact area and further improves the overall stability.

[0035] In practice, the motor base has a ring 24, and a thrust ball bearing 25 is mounted on the ring facing the turntable. During the stamping process, the turntable may vibrate; the thrust ball bearing provides support to the turntable and improves its stability.

[0036] Specifically, it also includes PLC controllers, which are used to control the operation of the electrical components within them.

[0037] Finally, it should be noted that those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A multi-station screw heading machine, characterized in that, Includes a base, a stamping mechanism, a blanking mechanism, and forming components; The stamping mechanism includes a vertical plate fixedly installed on the base, two stamping cylinders fixedly installed on the vertical plate, the cylinder rods of the stamping cylinders passing through the vertical plate and fixedly installed with punches; the unloading mechanism includes a support fixedly installed on the base, a cylinder seat fixedly installed on the support, a discharge cylinder fixedly installed on the cylinder seat, and a discharge push rod fixedly installed on the cylinder rod of the discharge cylinder. The forming assembly includes a bracket, on which a servo motor is fixedly mounted via a motor mount. A rotating shaft is fixedly mounted on the output shaft of the servo motor, and a turntable is fixedly mounted on the rotating shaft. The turntable has four circular holes arranged in a ring array. The stamping mechanism and the unloading mechanism are respectively located on both sides of the turntable. The ends of the circular holes near the stamping mechanism are recessed to form a retaining ring, and the ends of the circular holes near the unloading mechanism are protruding to form a sleeve. The outer side of the sleeve has external threads. A forming mold is placed inside the circular holes. The forming mold has a through-hole forming section and a screw section, and an abutment ring that abuts against the retaining ring. A cap is threadedly connected to the outer side of the sleeve, and the cap abuts against the forming mold. The cap has a through hole that allows the unloading push rod to pass through.

2. The multi-station screw heading machine according to claim 1, characterized in that, The retaining ring is fixed with several positioning pins, and the abutting ring has positioning holes that are inserted and engaged with the positioning pins.

3. A multi-station screw heading machine according to claim 2, characterized in that, The cap body is provided with a protruding insert ring, which is located between the forming mold and the sleeve.

4. A multi-station screw heading machine according to claim 1, characterized in that, A handle is fixed to the outside of the cap.

5. A multi-station screw heading machine according to claim 1, characterized in that, The cap has an outer ring that abuts against the turntable.

6. A multi-station screw heading machine according to claim 1, characterized in that, The motor base has a ring, and a thrust ball bearing is mounted on the ring facing the turntable.

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