Stamping automatic feeding device for hinge production

Abstract

The invention relates to the field of automatic assembly, in particular to a punching automatic feeding device for hinge production, which comprises a linkage mechanism and a driving mechanism which are arranged on a punching machine and sequentially connected, the linkage mechanism is connected with a motor of the punching machine, and clamping mechanisms are arranged at two ends of the punching machine along the feeding direction. Clamping assemblies connected with the material clamping mechanisms at the two ends are arranged on the outer side of the punching machine, and the clamping assemblies can be driven by the material clamping mechanisms to move in the transverse direction and the vertical direction on the horizontal plane. The stamping automatic feeding device for hinge production is stable in transmission and good in reliability.

Description

Technical Field

[0001] The invention relates to the field of automatic assembly, in particular to an automatic punching feeding device for hinge production. Background Art

[0002] Hinges are currently a common connection component on furniture. Due to their huge usage, the acceleration of their production efficiency and the improvement of their processing quality have become a difficult problem faced by many hinge manufacturers. Chinese patent document CN110541639A discloses a damping-adjustable two-stage force hinge, in which the hinge arm and hinge cup are the core components of the hinge. The above-mentioned hinge arm and hinge cup are generally manufactured by continuous stamping and forming. In order to reduce the molding process of the components, the manufacturer will use automatic stamping continuous processing molds for processing.

[0003] Chinese patent document CN202192789U discloses a fully automatic stamping manipulator, which uses a servo motor and a belt transmission mechanism to drive the mechanical arm to move up and down, left and right, and grabs the workpiece through a vacuum nozzle to realize automatic feeding and unloading of parts during stamping. Chinese patent document CN111545663A discloses a hardware stamping manipulator, which uses a combination of a motor and a screw to drive the slider to move, and drives the unfolding arm with a suction cup through a cylinder to realize automatic feeding and unloading of parts during stamping. Although the manipulators disclosed in the above two patent documents can realize the grabbing and placement of parts during stamping, they still have major technical defects. First, when the punch press is working, the pressure and instantaneous impact force during the stamping process are very large, and the mold and its surroundings will produce strong vibrations. Therefore, whether it is belt drive or screw drive, under strong vibration, the belt drive will loosen or the screw will deform after being subjected to the impact force, which greatly affects its service life. Secondly, in the continuous processing mold, the stability of the parts to be processed continuously moving forward during continuous stamping is required to be extremely high. Due to the influence of pressure and instantaneous impact force during stamping, the suction cup or vacuum nozzle is very likely to drop the parts due to vibration. In addition to seriously affecting the normal processing of continuous stamping, it will also cause damage to the mold. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a punching automatic feeding device for hinge production with stable transmission and good reliability.

[0005] The present invention provides a punching automatic feeding device for hinge production, which comprises a linkage mechanism and a driving mechanism which are arranged on a punch press and connected in sequence, the linkage mechanism is connected to the motor of the punch press, clamping mechanisms are arranged at both ends of the punch press along the feeding direction, and clamping components which are respectively connected to the clamping mechanisms at both ends are arranged on the outer side of the punch press, and the clamping components can move horizontally and vertically on a horizontal plane under the drive of the clamping mechanism.

[0006] By optimizing the above structure, the linkage mechanism includes a linkage bracket arranged on the punch press, a driving wheel group located on the linkage bracket, and a driven wheel group driven by the driving wheel group, wherein the driving wheel group is provided with a tensioning wheel, and the driven wheel group includes a first driven wheel coaxially fixed to the output end of the driving wheel group and a second driven wheel connected to the first driven wheel.

[0007] By optimizing the above structure, the driving mechanism includes a driving bracket arranged on the outside of the end of the punch press, a driving wheel and a driving plate arranged on the driving bracket, and a driving rod connected to the driving plate. A driving shaft is provided between the driving wheel and the output end of the linkage mechanism, an arc groove is provided on the side of the driving wheel, the driving plate is movably hinged to the driving bracket, and its rotating shaft is inserted in the arc groove. The driving plate and the driving rod are tooth-engagingly connected, and a driving arm movably hinged to the clamping mechanism is provided at the end of the driving rod.

[0008] By further improving the above structure, a guide portion is provided on the driving bracket, which can accommodate the driving rod and enable it to move back and forth.

[0009] By optimizing the above structure, the clamping mechanism includes a clamping seat arranged on the outer sides of both ends of the punch press, a clamping movable plate arranged on the clamping seat and capable of moving back and forth, a first clamping block and a second clamping block arranged on the clamping seat and capable of moving toward each other, a clamping driving plate connected to the punching part of the punch press is provided on the clamping seat, a curved clamping guide groove is provided on the clamping driving plate, a clamping transmission shaft passing through the clamping guide groove is provided on the clamping movable plate, a clamping transmission gear rotatable around the axis is provided on the clamping movable plate, a clamping transmission rack matched with the clamping transmission gear is provided on the first clamping block, a crossed clamping connecting arm is provided between the first clamping block and the second clamping block, a clamping connecting shaft movably hinged to the intersection of the clamping connecting arm is provided on the clamping seat, and a clamping connecting block slidably connected to the first clamping block and the second clamping block are respectively provided with a clamping connecting block, and the clamping connecting block is movably hinged to the output end of the driving mechanism.

[0010] By further improving the above structure, a material clamping guide wheel is provided on the side of the material clamping movable plate, and a material clamping guide strip meshingly connected with the material clamping guide wheel teeth is provided on the material clamping seat.

[0011] By further improving the above structure, the first clamping block and the second clamping block are both provided with clamping slide rails, and the clamping connecting block is provided with a clamping sliding block slidably connected to the clamping slide rails.

[0012] By further improving the above structure, a material clamping driving cylinder is provided between the material clamping driving plate and the punching part of the punch press, and a material clamping connecting plate fixedly connected to the punching part of the punch press is provided on the material clamping driving cylinder.

[0013] By optimizing the above structure, the clamping assembly includes clamping rods respectively connected to the clamping mechanisms at both ends of the punch press, and a clamping head arranged on the clamping rods and corresponding to the mold cavity position of the stamping die.

[0014] The beneficial effects of the stamping automatic feeding device for hinge production of the present invention are:

[0015] 1. The automatic feeding device of the present invention adopts an external and continuous conveying clamping method to realize the conveying of the hinge parts on the continuous mold in the punch press. First, when the feeding device is in operation, it can avoid the influence of the vibration generated by the punch press as much as possible, thereby improving the stability and reliability of the feeding device. Secondly, in the feeding device, the driving mechanism and the clamping mechanism are respectively connected to the motor and the punching part of the punch press, thereby realizing the synchronization of the feeding device and the punch press action, further improving the stability and reliability of its feeding.

[0016] 2. In the automatic feeding device of the present invention, a cross material clamping connecting arm is provided between the first material clamping block and the second material clamping block, and the material clamping connecting arm is connected together by a material clamping connecting shaft. Driven by the material clamping movable plate, the first material clamping block and the second material clamping block form an opening and closing structure with the material clamping connecting shaft as the center, which can not only effectively avoid the impact generated when the punching part of the punch press contacts the continuous die, but also realize the process of grabbing, moving forward and placing the hinge part on the continuous die, making the whole feeding process more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the assembly of the best embodiment of the present invention;

[0018] Figure 2 It is a structural schematic diagram of the linkage mechanism of the present invention;

[0019] Figure 3 It is a structural schematic diagram of the driving mechanism of the present invention;

[0020] Figure 4 Another structural schematic diagram of the driving mechanism of the present invention;

[0021] Figure 5 It is a schematic diagram of the connection between the driving wheel and the driving plate of the present invention;

[0022] Figure 6 It is a structural schematic diagram of the clamping mechanism of the present invention;

[0023] Figure 7 It is a schematic diagram of the structural decomposition of the clamping mechanism of the present invention;

[0024] Figure 8 It is a schematic diagram of the structural decomposition of the material clamping driving plate and the material clamping movable plate of the present invention;

[0025] Fig. 9 It is a schematic diagram of the connection between the punching part of the punch press and the material clamping connecting plate of the present invention;

[0026] Fig.10 Another schematic diagram of the connection between the punching part of the punch press and the material clamping connecting plate of the present invention;

[0027] Fig.11 It is a schematic diagram of the installation of the clamping assembly of the present invention;

[0028] Fig.12 It is a schematic structural diagram of the clamping assembly of the present invention.

[0029] The following are marked in the figure: linkage mechanism 1, linkage bracket 11, driving wheel group 12, tensioning wheel 13, first driven wheel 14, second driven wheel 15, driving mechanism 2, guide groove 20, driving bracket 21, driving wheel 22, driving plate 23, driving rod 24, driving shaft 25, arc groove 26, rotating shaft 27, driving arm 28, guide part 29, clamping mechanism 3, clamping seat 301, clamping movable plate 302, first clamping block 303, second clamping block 304 , material clamping drive plate 305, material clamping guide groove 306, material clamping transmission shaft 307, material clamping transmission gear 308, material clamping transmission rack 309, material clamping connecting arm 310, material clamping connecting shaft 311, material clamping connecting block 312, material clamping guide wheel 313, material clamping guide bar 314, material clamping guide shaft 315, material clamping slide rail 316, material clamping slider 317, material clamping drive cylinder 318, material clamping connecting plate 319, clamping assembly 4, clamping rod 41, clamping head 42. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The following embodiments are one or several examples that can realize the new technical solutions of the present utility model, obtain corresponding technical effects, and solve corresponding technical problems, and do not mean that the protection scope of the technical solutions only includes the following embodiments.

[0031] according to Figure 1As shown, the punching automatic feeding device for hinge production of the present invention is mainly composed of a linkage mechanism 1, a driving mechanism 2, a clamping mechanism 3 and a clamping assembly 4. The linkage mechanism 1 and the driving mechanism 2 are both arranged on the punch press and are connected together in sequence. The linkage mechanism 1 is located at the side of the punch press, and is connected to the motor of the punch press so that the linkage mechanism 1 can work synchronously when the punch press is started. The driving mechanism 2 is located at the outer side of the end of the punch press, connected to the linkage mechanism 1, and drives the clamping mechanism 3 under the drive of the linkage mechanism 1. The clamping mechanism 3 is located at both ends of the punch press, specifically at the outer sides of both ends of the punch press along the feeding direction. The clamping assembly 4 is located at the outer side of the punch press, which is used to connect the clamping mechanisms 3 at both ends of the punch press, and moves horizontally and vertically along the horizontal plane under the drive of the clamping mechanism 3 to transport the hinge components in the continuous mold in the punch press.

[0032] according to Figure 2 As shown, in one embodiment of the present invention, the linkage mechanism 1 includes a linkage bracket 11, a driving wheel group 12 and a driven wheel group. The linkage bracket 11 is located on the punch press and fixed thereto. The driving wheel group 12 is arranged on the linkage bracket 11, and its input end is connected to the punch press motor, and its output end is connected to the driven wheel group. The connection between the driving wheel group 12 and the punch press motor can adopt a coaxial fixed connection structure or a transmission structure with a reducer, which can be selected by the user according to actual conditions. The two ends of the driving wheel group 12 can adopt a chain connection or a belt connection transmission mode to achieve its normal operation. The driving wheel group 12 also has a tensioning wheel 13, which is used to press on the transmission components at both ends of the driving wheel group 12 to improve the working stability of the driving wheel group 12. The driven wheel group is also arranged on the linkage bracket 11, and includes a first driven wheel 14 and a second driven wheel 15. The first driven wheel 14 is coaxially fixed with the output end of the driving wheel group 12, and the second driven wheel 15 is connected to the clamping mechanism 3. In this embodiment, the first driven wheel 14 and the second driven wheel 15 can also be connected by a chain or a belt to achieve normal operation.

[0033] according to Figure 3 , Figure 4 and Figure 5As shown, in one embodiment of the present invention, the driving mechanism 2 includes a driving bracket 21, a driving wheel 22, a driving plate 23, a driving rod 24, a driving shaft 25 and a driving arm 28. The driving bracket 21 is located at the outer side of the end of the punch press and is fixed to the punch press. The driving wheel 22 and the driving plate 23 are both arranged on the driving bracket 21 and are movably connected to the driving bracket 21 so that the driving plate 23 and the driving rod 24 move synchronously under the drive of the driving wheel 22. The driving rod 24 is located at the outer side of the driving bracket 21 and is movably connected to the driving plate 23. Specifically, the driving rod 24 and the driving plate 23 are connected together by a tooth meshing method so that they can move back and forth in the feeding direction under the drive of the driving plate 23. The driving shaft 25 is located between the driving wheel 22 and the output end of the linkage mechanism 1, and plays the role of connecting and transmitting power. Specifically, the driving shaft 25 is arranged between the driving wheel 22 and the second driven wheel 15 so that the driving wheel 22 and the second driven wheel 15 are coaxially fixed together. The driving plate 23 and the driving bracket 21 are movably hinged via a rotating shaft 27, and an arc groove 26 is provided on the outer surface of the driving wheel 22, and the rotating shaft 27 is inserted into the arc groove 26, so that the driving plate 23 can swing back and forth around the rotating shaft 27 when the driving wheel 22 rotates. The driving arm 28 is located at the end of the driving rod 24, and is movably hinged to the driving rod 24 and the clamping mechanism 3, respectively, to drive the clamping mechanism 3 to work.

[0034] In another embodiment, a guide portion 29 is further provided on the driving bracket 21. The guide portion 29 is fixed to the driving bracket 21 and is used to accommodate the driving rod 24. Specifically, the guide portion 29 has a guide groove 20, and the direction of the guide groove 20 is consistent with the feeding direction. The driving rod 24 is disposed in the guide groove 20 and can move back and forth in the guide groove 20.

[0035] according to Figure 6 , Figure 7 , Figure 8 , Fig. 9 and Fig.10As shown, in one embodiment of the present invention, the material clamping mechanism 3 includes a material clamping seat 301, a material clamping movable plate 302, a first material clamping block 303, a second material clamping block 304 and a material clamping driving plate 305. The material clamping seat 301 is located at the outer side of both ends of the punch press along the feeding direction and is fixed to the punch press. The material clamping movable plate 302 is movably connected to the material clamping seat 301 and can move back and forth on the material clamping seat 301. The first material clamping block 303 and the second material clamping block 304 are both arranged on the material clamping seat 301, and the two can move toward each other or move in the opposite direction when working. The material clamping seat 301 is also provided with a material clamping driving plate 305, which is connected to the stamping part of the punch press so that the material clamping driving plate 305 can work synchronously when the punch press is working. A material clamping guide groove 306 is also provided on the material clamping driving plate 305, and the material clamping guide groove 306 is an S-shaped curved through groove. The clamping movable plate 302 is provided with a clamping transmission shaft 307, which is inserted into the clamping guide groove 306 and fixed to the clamping movable plate 302, so that the clamping driving plate 305 can move back and forth in the horizontal direction when the clamping driving plate 305 moves up and down. The clamping movable plate 302 is also provided with a clamping transmission gear 308, which can rotate around the axis to convert the translational movement of the clamping movable plate 302 into a rotational movement. The first clamping block 303 is provided with a clamping transmission rack 309, which is fixed to the bottom of the first clamping block 303 and meshed with the clamping transmission gear 308 to convert the rotational movement of the clamping transmission gear 308 into the horizontal movement of the clamping transmission rack 309. The first clamping block 303 and the second clamping block 304 are connected together by a clamping connecting arm 310. There are at least two clamping connecting arms 310, which are cross-connected, and the clamping connecting arms 310 are respectively hinged with the first clamping block 303 and the second clamping block 304. A clamping connecting shaft 311 is also provided on the clamping seat 301. The clamping connecting shaft 311 is located at the intersection of the two clamping connecting arms 310 and is respectively hinged with the two clamping connecting arms 310. At the same time, the clamping seat 301 is also provided with a clamping guide shaft 315, which is connected to the first clamping block 303 and the second clamping block 304, and allows the first clamping block 303 and the second clamping block 304 to slide back and forth thereon. The first clamping block 303, the second clamping block 304, the clamping connecting arm 310 and the clamping connecting shaft 311 form a scissor-like opening and closing structure, so that the clamping mechanism 3 forms a horizontal clamping of the hinge component from the outside to the inside. In addition, the first clamping block 303 and the second clamping block 304 are respectively provided with a clamping connecting block 312, which is slidably connected to the first clamping block 303 and the second clamping block 304, and is movably hinged to the output end of the driving mechanism 2. Specifically, the clamping connecting block 312 is movably hinged to the driving arm 28.

[0036] In another embodiment, the side of the clamping movable plate 302 is further provided with a clamping guide wheel 313, which is coaxially arranged with the clamping transmission gear 308. A clamping guide bar 314 is arranged on the clamping seat 301, which is fixed to the clamping seat 301 and connected to the clamping guide wheel 313 in a gear meshing manner, thereby improving the stability of the clamping movable plate 302 moving on the clamping seat 301.

[0037] In another embodiment, the first clamping block 303 and the second clamping block 304 are both provided with clamping rails 316, which are respectively fixed to the first clamping block 303 and the second clamping block 304. The clamping slider 317 is provided on the clamping connection block 312, which is fixed to the clamping connection block 312 and slidably connected to the clamping rails 316.

[0038] In another embodiment, a clamping drive cylinder 318 is further provided between the clamping drive plate 305 and the punching part of the punch press. A clamping connection plate 319 is provided on the clamping drive cylinder 318, and the clamping connection plate 319 is fixedly connected to the clamping drive cylinder 318 and the punching part of the punch press, respectively, so as to reduce the impact force borne by the clamping drive plate 305 when the punch press is working, so that the work of the clamping drive plate 305 is more stable.

[0039] according to Fig.11 and Fig.12 As shown, in another embodiment of the present invention, the clamping assembly 4 includes a clamping rod 41 and a clamping head 42. The clamping rod 41 is respectively connected to the clamping mechanism 3 at both ends of the punch press, and specifically, it is movably hinged with the first clamping block 303 and the second clamping block 304. The clamping head 42 is fixed to the clamping rod 41 and arranged along the feeding direction. In this embodiment, the clamping head 42 corresponds to the position of the die cavity of the stamping die, and because the shapes of the hinge parts in different processing stages are different, the clamping head 42 can be adapted to the hinge parts of different processing shapes to ensure the reliability of its clamping and feeding.

[0040] The above specific embodiments are only implementation methods with better technical effects of the present invention. Any structure that is the same or equivalent to the stamping automatic feeding device for hinge production of the present invention is within the protection scope of the present invention.

Claims

1. A stamping automatic feeding device for hinge production, characterized in that: The automatic feeding device comprises a linkage mechanism (1) and a driving mechanism (2) which are arranged on the punch press and are connected in sequence, the linkage mechanism (1) is connected to the motor of the punch press, a clamping mechanism (3) is provided at both ends of the punch press along the feeding direction, and a clamping assembly (4) which is respectively connected to the clamping mechanisms (3) at both ends is provided on the outer side of the punch press, and the clamping assembly (4) can move horizontally and vertically on a horizontal plane under the drive of the clamping mechanism (3).

2. The automatic stamping feeding device for hinge production according to claim 1, characterized in that: The linkage mechanism (1) comprises a linkage bracket (11) arranged on a punch press, a driving wheel group (12) located on the linkage bracket (11), and a driven wheel group driven by the driving wheel group (12), wherein the driving wheel group (12) is provided with a tensioning wheel (13), and the driven wheel group comprises a first driven wheel (14) coaxially fixed to an output end of the driving wheel group (12) and a second driven wheel (15) connected to the first driven wheel (14).

3. The automatic stamping feeding device for hinge production according to claim 1, characterized in that: The driving mechanism (2) comprises a driving bracket (21) arranged outside the end of the punch press, a driving wheel (22) and a driving plate (23) arranged on the driving bracket (21), and a driving rod (24) connected to the driving plate (23); a driving shaft (25) is arranged between the driving wheel (22) and the output end of the linkage mechanism (1); an arc groove (26) is arranged on the side of the driving wheel (22); the driving plate (23) is movably hinged to the driving bracket (21); a rotating shaft (27) is inserted into the arc groove (26); the driving plate (23) and the driving rod (24) are connected by teeth meshing; and a driving arm (28) movably hinged to the clamping mechanism (3) is arranged at the end of the driving rod (24).

4. The automatic stamping feeding device for hinge production according to claim 3, characterized in that: The driving bracket (21) is provided with a guide portion (29) which can accommodate the driving rod (24) and enable it to move back and forth.

5. The automatic stamping feeding device for hinge production according to claim 1, characterized in that: The material clamping mechanism (3) comprises a material clamping seat (301) arranged at the outer sides of both ends of the punch press, a material clamping movable plate (302) arranged on the material clamping seat (301) and capable of reciprocating movement, a first material clamping block (303) and a second material clamping block (304) arranged on the material clamping seat (301) and capable of moving toward each other, a material clamping driving plate (305) connected to the punching part of the punch press is arranged on the material clamping seat (301), a curved material clamping guide groove (306) is arranged on the material clamping driving plate (305), a material clamping transmission shaft (307) inserted into the material clamping guide groove (306) is arranged on the material clamping movable plate (302), and a material clamping movable plate (302) is provided with a material clamping transmission shaft (307) which is connected to the material clamping guide groove (306). The first clamping block (303) is provided with a clamping transmission gear (308) which is rotatable, and a clamping transmission rack (309) which is matched and connected with the clamping transmission gear (308); a crossed clamping connection arm (310) is provided between the first clamping block (303) and the second clamping block (304); a clamping connection shaft (311) which is movably hinged with the intersection of the clamping connection arm (310) is provided on the clamping seat (301); the first clamping block (303) and the second clamping block (304) are respectively provided with a clamping connection block (312) which is slidably connected thereto; and the clamping connection block (312) is movably hinged with the output end of the driving mechanism (2).

6. The automatic stamping feeding device for hinge production according to claim 5, characterized in that: A material clamping guide wheel (313) is provided on the side of the material clamping movable plate (302), and a material clamping guide strip (314) meshingly connected with the material clamping guide wheel (313) is provided on the material clamping seat (301).

7. The automatic stamping feeding device for hinge production according to claim 5, characterized in that: The first material clamping block (303) and the second material clamping block (304) are both provided with material clamping slide rails (316), and the material clamping connecting block (312) is provided with a material clamping sliding block (317) slidably connected to the material clamping slide rails (316).

8. The automatic stamping feeding device for hinge production according to claim 5, characterized in that: A material clamping driving cylinder (318) is provided between the material clamping driving plate (305) and the punching part of the punch press, and a material clamping connecting plate (319) fixedly connected to the punching part of the punch press is provided on the material clamping driving cylinder (318).

9. The automatic stamping feeding device for hinge production according to claim 1, characterized in that: The clamping assembly (4) comprises clamping rods (41) respectively connected to the clamping mechanisms (3) at both ends of the punch press, and a clamping head (42) arranged on the clamping rods (41) and corresponding to the position of the die cavity of the punching die.

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