In-mold Automatic Feeding Riveting Fixture

Abstract

The present application discloses an in-mold automatic feeding and riveting fixture, which is arranged directly below the riveting punch head and includes a lower mold fixed to a support base and an upper mold slidably arranged directly above the lower mold. The lower mold protrudes upward with a riveting rod that can slidably penetrate the upper mold. The upper mold includes a lifting plate, a feeding plate, a top plate, and a riveting seat. The lifting plate is slidably connected to the lower mold through guide rods. The top surface of the feeding plate is recessed with a material channel, and a material pipe and a limit block are respectively arranged at both ends of the material channel. The top plate is fixed to the top surface of the feeding plate, and the riveting seat is fixed to the top surface of the top plate. The riveting rod sequentially slidably penetrates the lifting plate, the feeding plate, the top plate, and the riveting seat. The structure of the present application is simple, capable of automatically conveying nuts and improving production efficiency; the operation of the equipment has low technical requirements for personnel and is simple and flexible to operate.

Description

Technical Field

[0001] The present application relates to the field of automated machinery, and particularly relates to an in-mold automatic feeding and riveting jig. Background Art

[0002] Currently, nuts are set on parts, and generally, welding is used. Although certain performance can be achieved, it is very difficult to ensure the position accuracy of the nuts after welding, and welding is also inconvenient. Therefore, riveted nuts have emerged. However, there are certain difficulties in achieving automated mass production, such as the conveying of nuts. If continuous conveying cannot be achieved, in-mold riveting cannot be realized. Hence, improvements are needed. Summary of the Invention

[0003] The purpose of the present invention is to provide an in-mold automatic feeding and riveting jig to overcome the deficiencies in the prior art.

[0004] To achieve the above purpose, the present invention provides the following technical solutions:

[0005] An in-mold automatic feeding and riveting jig disclosed in an embodiment of the present application is disposed directly below a riveting punch, and includes a lower mold fixed to a support base and an upper mold slidably disposed directly above the lower mold. The lower mold protrudes upward with a riveting rod that can slidably penetrate the upper mold. The upper mold includes a lifting plate, a feeding plate, a top plate, and a riveting seat. The lifting plate is slidably connected to the lower mold through guide rods. The top surface of the feeding plate is recessed with a material channel. The two ends of the material channel are respectively provided with a material pipe and a limiting block. The top plate is fixed to the top surface of the feeding plate, and the riveting seat is fixed to the top surface of the top plate. The riveting rod sequentially slidably penetrates the lifting plate, the feeding plate, the top plate, and the riveting seat.

[0006] Preferably, in the above in-mold automatic feeding and riveting jig, a bearing plate is provided between the lower mold and the support base. The bottom end of the riveting rod abuts against the top surface of the bearing plate. A stepped hole for installing the riveting rod is recessed in the lower mold, and a limiting boss corresponding to the stepped hole protrudes from the bottom end of the riveting rod.

[0007] Preferably, in the above in-mold automatic feeding and riveting jig, a guide sleeve is provided between the lower mold and the guide rod. The support base and the bearing plate are respectively provided with relief holes corresponding to the guide rod.

[0008] Preferably, in the above in-mold automatic feeding and riveting jig, the end of the material pipe facing away from the upper mold is connected to an external material conveying pipe. The end of the material pipe close to the upper mold is clamped between the feeding plate and the top plate. A feeding hole communicating with the material channel is machined in the material pipe.

[0009] Preferably, in the above-mentioned in-mold automatic feeding riveting jig, anti-retreat mechanisms are respectively provided on both sides of one end of the material channel close to the limit block, a T-slot corresponding to the anti-retreat mechanism is processed in the feeding plate, and the anti-retreat mechanism is slidably arranged in the T-slot.

[0010] Preferably, in the above-mentioned in-mold automatic feeding riveting jig, the anti-retraction mechanism includes a T-block and a top block slidably arranged in the T-block, and a side of the T-block close to the material channel is recessed with a yield groove corresponding to the nut.

[0011] Preferably, in the above-mentioned in-mold automatic feeding riveting jig, the top block is slidably arranged in the T-block by a screw, a first spring is arranged between the screw and the top block, and one end of the top block facing away from the first spring is processed into a first inclined surface.

[0012] Preferably, in the above-mentioned in-mold automatic feeding riveting jig, the bottom surface of the T-block is processed into a second inclined surface, the top end of the rivet rod is processed with a third inclined surface corresponding to the second inclined surface, the side surfaces of the feeding plate are respectively provided with a cover plate, and a second spring is provided between the cover plate and the T-block.

[0013] Preferably, in the above-mentioned in-mold automatic feeding riveting jig, a positioning hole is concavely provided at the center of the top end of the rivet rod, and a positioning rod protrudes from the center of the positioning hole.

[0014] Preferably, in the above-mentioned in-mold automatic feeding riveting jig, a reset device is provided between the upper mold and the lower mold, and the reset device is a nitrogen spring.

[0015] Compared with the prior art, the advantages of the present invention are: the in-mold automatic feeding riveting fixture has a simple structure, can automatically feed nuts, and improve production efficiency; the equipment operation does not require high technical skills of personnel, and the operation is simple and flexible. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 Shown is a schematic structural diagram of an in-mold automatic feeding riveting jig in a specific embodiment of the present invention.

[0018] Figure 2 Shown is a side view of an in-mold automatic feeding riveting jig in a specific embodiment of the present invention.

[0019] Figure 3The figure shows a cross-sectional view of the in-mold automatic feeding and riveting fixture in a specific embodiment of the present invention.

[0020] Figure 4 The figure shows an installation schematic diagram of the anti-retreat mechanism in a specific embodiment of the present invention.

[0021] Figure 5 The figure shows a structural schematic diagram of the anti-retreat mechanism in a specific embodiment of the present invention. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present invention will be described in detail with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0023] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0024] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Refer Figures 1 to 5As shown, an in-mold automatic feeding riveting fixture is arranged directly below the riveting pressure head 1, including a lower mold 3 fixed to a support seat 2 and an upper mold 4 slidably arranged directly above the lower mold 3, the lower mold 3 protrudes upward with a rivet rod 5 that can slidably penetrate the upper mold 4, the upper mold 4 includes a lifting plate 41, a feeding plate 42, a top plate 43 and a riveting seat 44, the lifting plate 41 is slidably connected to the lower mold 3 through a guide rod 6, the top surface of the feeding plate 42 is recessed with a material channel, and both ends of the material channel are respectively provided with a material pipe 45 and a T-shaped limit block 46, a material sensor 461 for sensing the nut is provided in the limit block, the top plate 43 is fixed to the top surface of the feeding plate 42, the riveting seat 44 is fixed to the top surface of the top plate 43, and the rivet rod 5 slides through the lifting plate 41, the feeding plate 42, the top plate 43 and the riveting seat 44 in sequence.

[0026] In this technical solution, the material pipe is connected to the external feeding hose, and the nuts are blown into the feeding hose after being sorted and divided by the vibration plate of the conventional technology, and enter the material channel in the feeding plate through the material pipe. The material sensor in the limit block senses that the nut is in place and the blowing stops; the riveting pressure head moves downward, driving the upper mold with the part flange to press down, and the nut is supported by the rivet rod, which passes through the lifting plate, the feeding plate, the top plate and the riveting seat in sequence until the nut and the flanging are riveted together. The continuous die in the punch press automatically feeds the material belt. After riveting, the nuts are removed step by step with the material belt and cut into separate workpieces at the last station of the continuous die. The present application has a simple structure and can automatically convey nuts to improve production efficiency; the equipment operation does not have high technical requirements for personnel and is simple and flexible to operate.

[0027] Furthermore, a bearing plate 7 is provided between the lower mold 3 and the support seat 2, and the bottom end of the rivet rod 5 is abutted against the top surface of the bearing plate 7. A step hole for installing the rivet rod 5 is recessed in the lower mold 3, and a limiting boss corresponding to the step hole protrudes from the bottom end of the rivet rod 5.

[0028] In this technical solution, the bearing plate is used to bear the pressure on the rivet rod during the riveting process. The bottom end of the rivet rod 5 is protruded with a limiting boss corresponding to the step hole to prevent the rivet rod from falling out.

[0029] Furthermore, a guide sleeve is provided between the lower mold and the guide rod 6 , and clearance holes corresponding to the guide rod 6 are respectively provided in the support seat 2 and the bearing plate.

[0030] In this technical solution, the end of the guide rod is slidably arranged in the clearance hole to ensure that the upper mold is pressed down smoothly.

[0031] Furthermore, one end of the material pipe 45 facing away from the upper mold 4 is connected to the external feeding hose, and one end of the material pipe 45 close to the upper mold 4 is clamped between the feeding plate 42 and the top plate 43. A feeding hole connected to the material channel is processed in the material pipe 45.

[0032] In this technical solution, after the top plate is fixed to the feed plate by bolts, the end corresponding to the upper mold of the material tube is clamped between the feed plate and the top plate, and the end of the material tube away from the upper mold can be plugged and connected to the external feed hose, which is convenient for quick disassembly and assembly.

[0033] Furthermore, anti-backward mechanisms 8 are respectively provided on both sides of one end of the material channel close to the limit block 46, and a T-shaped groove corresponding to the anti-backward mechanism 8 is processed in the feeding plate 42, and the anti-backward mechanism 8 is slidably set in the T-shaped groove.

[0034] In this technical solution, the anti-retraction structure is used to prevent the nut from retreating after being in place, thereby improving the positioning accuracy of the nut.

[0035] Furthermore, the anti-retraction mechanism 8 includes a T-block 81 and a T-shaped top block 82 slidably disposed in the T-block 81 . A side of the T-block 81 close to the material channel is recessed with a relief groove 811 corresponding to the nut.

[0036] Furthermore, the top block 82 is slidably disposed in the T-shaped block 81 through a screw 83 , a first spring 84 is disposed between the screw and the top block 82 , and one end of the top block 82 away from the first spring is processed into a first inclined surface.

[0037] In the above two technical solutions, a reset hole is recessed at one end of the screw close to the top block, and the first spring is arranged in the reset hole. The corresponding end of the top block slides into the reset hole, and the first inclined surface protrudes into the makeshift groove. The nut is blown into the makeshift groove, and the first inclined surface is squeezed to make the top block retract into the T-block, thereby continuing to move to just above the rivet rod. After the nut passes through, the top block protrudes out of the makeshift groove again under the action of the first spring, thereby preventing the nut from retreating and improving the positioning accuracy of the nut.

[0038] Furthermore, the bottom surface of the T-block 81 is processed into a second inclined surface, the top end of the rivet rod 5 is processed with a third inclined surface corresponding to the second inclined surface, the side surfaces of the feed plate 42 are respectively provided with a cover plate 421, and a second spring is provided between the cover plate and the T-block 81.

[0039] In this technical solution, after the nut is in place, the upper die is pressed down with the riveting pressure head, and the rivet rod squeezes the second inclined surface through the third inclined surface, so that the T-block avoids it and does not affect the relative movement between the upper die and the rivet rod. At the same time, the nut falls from the makeshift grooves of the two T-blocks to the top of the rivet rod.

[0040] Furthermore, a positioning hole is concavely provided at the center of the top end of the rivet rod 5, and a positioning rod protrudes from the center of the positioning hole.

[0041] This technical solution is used to position the nut, thereby improving the riveting accuracy.

[0042] Furthermore, a reset device 9 is provided between the upper mold 4 and the lower mold 3 , and the reset device is a nitrogen spring.

[0043] In this technical solution, an installation groove is provided at the center of the lower die. The nitrogen spring is installed in the installation groove through a fixed seat, and the top end of the piston rod of the nitrogen spring abuts against the bottom surface of the lifting plate, which is used for the reset of the upper die after riveting.

[0044] In summary, the in-mold automatic feeding and riveting fixture has a simple structure, can automatically transport nuts, and improve production efficiency; the operation of the equipment does not require high technical skills for personnel, and the operation is simple and flexible.

[0045] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising a..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the element.

[0046] The above are only specific embodiments of the present application. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present application, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present application.

Claims

1. An in-mold automatic feeding riveting fixture, which is set just below the riveting pressure head. It is characterized in that It includes a lower mold fixed to a support seat and an upper mold slidably arranged just above the lower mold, the lower mold protruding upward is provided with a rivet rod that can slide through the upper mold, the upper mold includes a lifting plate, a feeding plate, a top plate and a riveting seat, the lifting plate is slidably connected to the lower mold through a guide rod, the top surface of the feeding plate is recessed with a material channel, the two ends of the material channel are respectively provided with a material pipe and a limit block, the top plate is fixed to the top surface of the feeding plate, the riveting seat is fixed to the top surface of the top plate, the rivet rod slides through the lifting plate, the feeding plate, the top plate and the riveting seat in turn; anti-retreat mechanisms are respectively arranged on both sides of one end of the material channel close to the limit block, a T-slot corresponding to the anti-retreat mechanism is processed in the feeding plate, and the anti-retreat mechanism is slidably arranged The anti-retreat mechanism comprises a T-block and a top block slidably arranged in the T-block, a side of the T-block close to the material channel is recessed with a give way groove corresponding to the nut, the top block is slidably arranged in the T-block by a screw, a first spring is arranged between the screw and the top block, an end of the top block facing away from the first spring is processed into a first inclined surface, an end of the screw close to the top block is recessed with a reset hole, the first spring is arranged in the reset hole, the corresponding end of the top block slides in the reset hole, the bottom surface of the T-block is processed into a second inclined surface, the top end of the rivet rod is respectively processed with a third inclined surface corresponding to the second inclined surface, the side surfaces of the feeding plate are respectively provided with cover plates, and a second spring is arranged between the cover plate and the T-block.

2. The in-mold automatic feeding riveting jig according to claim 1, Features: A bearing plate is provided between the lower mold and the support seat, the bottom end of the rivet rod is abutted against the top surface of the bearing plate, a step hole for installing the rivet rod is concavely provided in the lower mold, and a limiting boss corresponding to the step hole protrudes from the bottom end of the rivet rod.

3. The in-mold automatic feeding riveting jig according to claim 2, Features: A guide sleeve is arranged between the lower mold and the guide rod, and a clearance hole corresponding to the guide rod is arranged in the support seat and the bearing plate respectively.

4. The in-mold automatic feeding riveting jig according to claim 1, Features: The end of the material pipe facing away from the upper mold is connected to the external material delivery pipe, and the end of the material pipe close to the upper mold is clamped between the feed plate and the top plate. A feed hole connected to the material channel is processed in the material pipe.

5. The in-mold automatic feeding riveting jig according to claim 1, Features: A positioning hole is concavely arranged at the center of the top end of the rivet rod, and a positioning rod protrudes from the center of the positioning hole.

6. The in-mold automatic feeding riveting jig according to claim 1, Features: A reset device is provided between the upper mold and the lower mold, and the reset device is a nitrogen spring.

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