A cold heading forming equipment for rivet nuts

Abstract

The invention discloses a cold heading forming device for rivet nuts, comprising a frame, a sandblasting and chip removal mechanism is arranged on the top right side of the frame, a cold heading mechanism is arranged on the left side of the sandblasting and chip removal mechanism, the cold heading mechanism comprises a hydraulic mechanical arm, a cold heading upper die, a cold heading lower die, a transfer mechanical arm, a cold heading oil nozzle, a small oil pump, an oil storage tank and an overflow hole, and a cleaning and discharging mechanism is arranged on the left side of the cold heading mechanism, the cleaning and discharging mechanism comprises a receiving trough, an oscillating chip removal bottom plate, an electric indexing shaft, an electromagnet, an electric telescopic discharging plate and a discharging trough. The invention enables the equipment to polish and deburr the rivet nuts, can evenly add cold heading oil in the cold heading die, and automatically discharge the rivet nuts after cold heading, so as to ensure the cold heading quality and precision of the rivet nuts, can oscillate and remove oil and chips from the rivet nuts after cold heading, so as to facilitate the collection and storage of the rivet nuts, and can also perform oil and chip separation to facilitate the recycling of cold heading oil, thereby saving production costs.

Description

Technical Field

[0001] The invention relates to the technical field of rivet nut processing equipment, in particular to the technical field of cold heading forming equipment for rivet nuts. Background Art

[0002] Rivet nuts, also known as pull rivet nuts and pull caps, are used in the fastening field of various metal plates, pipes and other manufacturing industries. They are widely used in the assembly of electromechanical and light industrial products such as automobiles, aviation, railways, refrigeration, elevators, switches, instruments, furniture, decoration, etc. It was developed to solve the shortcomings of easy melting of metal thin plates and thin tubes, easy welding deformation of base materials, and easy slipping of tapping internal threads. It does not require tapping internal threads, does not require welding nuts, and is easy to use. In the rivet nut forming process, cold heading technology is a major processing technology. Cold heading belongs to the category of metal pressure processing. At room temperature, the blank is placed in the mold of an automatic cold-sensitive machine or a press, and pressure is applied to the mold. The relative movement of the upper and lower molds is used to deform the blank in the mold cavity, reduce the height, and increase the cross section. In actual use, the cold heading machine is prone to affect the cold heading accuracy due to burrs and dirt on the surface of the cut blank, and even cause the nut to be stuck in the mold and unable to be demolded. Uneven addition of cold heading oil leads to deformation and cracks during the cold heading process. The nuts after cold heading are mixed with oil and dirt when discharged, affecting the quality of the nuts. Summary of the invention

[0003] The purpose of the present invention is to solve the problems in the prior art and to propose a cold heading forming device for rivet nuts, which can polish and remove burrs on the rivet nuts, evenly add cold heading oil in the cold heading mold, and automatically discharge the rivet nuts after cold heading, thereby ensuring the cold heading quality and precision of the rivet nuts. The rivet nuts after cold heading can be vibrated to remove oil and chips, which is convenient for the collection and storage of the rivet nuts. At the same time, oil and chips can be separated to facilitate the recycling of cold heading oil and save production costs.

[0004] To achieve the above-mentioned purpose, the present invention proposes a cold heading forming equipment for rivet nuts, comprising a frame, a sandblasting and chip removal mechanism is arranged on the top of the right side of the frame, a cold heading mechanism is arranged on the left side of the sandblasting and chip removal mechanism, the cold heading mechanism comprises a hydraulic mechanical arm, a cold heading upper die, a cold heading lower die, a transfer mechanical arm, a cold heading oil nozzle, a small oil pump, an oil storage tank and an overflow hole, an electric ejector rod is arranged at the bottom of the membrane hole of the cold heading lower die, a plurality of cold heading oil nozzles are arranged on the upper side of the cold heading lower die, the cold heading oil nozzle is connected to the oil storage tank through a small oil pump, the oil storage tank is located below the cold heading lower die, an overflow hole is arranged on the top of the cold heading lower die, the overflow hole is connected to the oil storage tank, a transfer mechanical arm is arranged on the side of the cold heading lower die, a cold heading upper die is arranged directly above the cold heading lower die through a hydraulic mechanical arm, the cold heading mechanism A cleaning and discharging mechanism is arranged on the left side, and the cleaning and discharging mechanism comprises a receiving trough, an oscillating chip removing base plate, an electric indexing shaft, an electromagnet, an electric telescopic discharging plate and a discharging trough. An oscillating chip removing base plate is arranged at the bottom of the receiving trough, and the right end of the oscillating chip removing base plate is connected to the right end bottom of the receiving trough through the electric indexing shaft, and the left end of the oscillating chip removing base plate is suction-connected to the left end bottom of the receiving trough through the electromagnet. An electric telescopic discharging plate is extended from the left end of the oscillating chip removing base plate, and a discharging trough is arranged below the electric telescopic discharging plate. A control center is arranged in the middle of the frame, and the control center is respectively connected one by one with the sandblasting and chip removing mechanism, the hydraulic mechanical arm, the cold heading upper die, the cold heading lower die, the transfer mechanical arm, the cold heading oil nozzle, the small oil pump, the oscillating chip removing base plate, the electric indexing shaft, the electromagnet and the electric telescopic discharging plate.

[0005] Preferably, the height of the membrane hole of the cold heading lower die is three times the height of the rivet nut workpiece, the top of the electric ejector rod is hidden at the bottom of the membrane hole of the cold heading lower die, and the maximum top height of the electric ejector rod is greater than the height of the membrane hole of the cold heading lower die.

[0006] Preferably, there are multiple cold forging oil nozzles, which are evenly distributed in a spiral shape on the upper inner side surface of the cold forging lower die, and the cold forging oil nozzles are radially arranged, and the small oil pump is a variable speed oil pump.

[0007] Preferably, the outer side of the cold heading mechanism is covered with a transparent dust cover, and a dust removal exhaust fan and a cooling air inlet fan are correspondingly arranged in the transparent dust cover.

[0008] Preferably, a plurality of steel brush bristles are evenly arranged on the top of the oscillating chip removal bottom plate, and a constant temperature fan is arranged above the material receiving trough.

[0009] Preferably, a recovery filter tank is provided below the oscillating chip removal bottom plate, a chip removal filter is detachably provided in the recovery filter tank, the bottom of the recovery filter tank is connected to the oil storage tank, and the recovery filter tank is located above the oil storage tank.

[0010] Beneficial effects of the present invention: the present invention combines a frame, a sandblasting and chip removal mechanism, a hydraulic mechanical arm, a cold heading upper die, a cold heading lower die, a transfer mechanical arm, a cold heading oil nozzle, a small oil pump, an oil storage tank, an overflow hole, a material receiving tank, an oscillating chip removal bottom plate, an electric indexing shaft, an electromagnet, an electric telescopic discharge plate and a discharge tank together, and after experimental optimization, the equipment can polish and remove burrs on rivet nuts, can evenly add cold heading oil in the cold heading die, and can automatically discharge the rivet nuts after cold heading, thereby ensuring the cold heading quality and precision of the rivet nuts, can oscillate and remove oil and chips on the rivet nuts after cold heading, and is convenient for the collection and storage of the rivet nuts. At the same time, the oil and chips can be separated to facilitate the recycling of cold heading oil and save production costs.

[0011] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The present invention is a schematic structural diagram of a cold heading forming device for a rivet nut.

[0013] In the figure: 1-frame, 2-sandblasting and chip removal mechanism, 3-cold heading mechanism, 4-hydraulic mechanical arm, 5-cold heading upper die, 6-cold heading lower die, 7-transfer mechanical arm, 8-cold heading oil nozzle, 9-small oil pump, 10-oil storage tank, 11-overflow hole, 12-cleaning and discharging mechanism, 13-receiving trough, 14-oscillating chip removal bottom plate, 15-electric indexing shaft, 16-electromagnet, 17-electric telescopic discharging plate, 18-discharging trough, 19-control center, 20-transparent dust cover, 21-wire brush, 22-constant temperature fan, 23-recovery filter tank, 24-electric ejector rod. DETAILED DESCRIPTION

[0014] See also Figure 1The present invention discloses a cold heading forming device for rivet nuts, comprising a frame 1, a sandblasting and chip removal mechanism 2 is arranged on the top right side of the frame 1, a cold heading mechanism 3 is arranged on the left side of the sandblasting and chip removal mechanism 2, the cold heading mechanism 3 comprises a hydraulic mechanical arm 4, a cold heading upper die 5, a cold heading lower die 6, a transfer mechanical arm 7, a cold heading oil nozzle 8, a small oil pump 9, an oil storage tank 10 and an overflow hole 11, an electric ejector rod 24 is arranged at the bottom of the film hole of the cold heading lower die 6, a plurality of cold heading oil nozzles 8 are arranged on the upper side of the cold heading lower die 6, the cold heading oil nozzles 8 are connected to the oil storage tank 10 through the small oil pump 9, the oil storage tank 10 is located below the cold heading lower die 6, the top of the cold heading lower die 6 is provided with an overflow hole 11, the overflow hole 11 and the oil storage tank 10 are connected to each other. 0 is connected, a transfer mechanical arm 7 is arranged on the side of the cold heading lower die 6, a cold heading upper die 5 is arranged directly above the cold heading lower die 6 through a hydraulic mechanical arm 4, a cleaning and discharging mechanism 12 is arranged on the left side of the cold heading mechanism 3, the cleaning and discharging mechanism 12 comprises a receiving trough 13, an oscillating chip removal bottom plate 14, an electric indexing shaft 15, an electromagnet 16, an electric telescopic discharging plate 17 and a discharging trough 18, an oscillating chip removal bottom plate 14 is arranged at the bottom of the receiving trough 13, the right end of the oscillating chip removal bottom plate 14 is connected to the right end bottom of the receiving trough 13 through the electric indexing shaft 15, the left end of the oscillating chip removal bottom plate 14 is connected to the left end bottom of the receiving trough 13 by suction through the electromagnet 16, and the left end of the oscillating chip removal bottom plate 14 is extended to An electric telescopic discharge plate 17 is provided, and a discharge trough 18 is provided below the electric telescopic discharge plate 17. A control center 19 is provided in the middle of the frame 1, and the control center 19 is respectively connected to the sandblasting and chip removal mechanism 2, the hydraulic mechanical arm 4, the cold heading upper die 5, the cold heading lower die 6, the transfer mechanical arm 7, the cold heading oil nozzle 8, the small oil pump 9, the oscillating chip removal bottom plate 14, the electric indexing shaft 15, the electromagnet 16 and the electric telescopic discharge plate 17. The film hole height of the cold heading lower die 6 is three times the height of the rivet nut workpiece, and the top of the electric ejector rod 24 is hidden at the bottom of the film hole of the cold heading lower die 6. The maximum top height of the electric ejector rod 24 is greater than the film hole height of the cold heading lower die 6. The number of the cold heading oil nozzles 8 is Multiple, the cold forging oil nozzles 8 are spirally evenly distributed on the upper inner side surface of the cold forging lower die 6, the cold forging oil nozzles 8 are all radially arranged, the small oil pump 9 is a variable speed oil pump, the outer side of the cold forging mechanism 3 is covered with a transparent dust cover 20, and the transparent dust cover 20 is staggered and correspondingly provided with a dust removal exhaust fan and a cooling air intake fan, the top of the oscillating chip removal base plate 14 is evenly provided with a plurality of steel wire bristles 21, a constant temperature fan 22 is provided above the material receiving trough 13, and a recovery filter trough 23 is provided below the oscillating chip removal base plate 14, and a chip removal filter is detachably provided in the recovery filter trough 23, and the bottom of the recovery filter trough 23 is connected to the oil storage tank 10, and the recovery filter trough 23 is located above the oil storage tank 10.

[0015] The present invention combines a frame 1, a sandblasting and chip removal mechanism 2, a hydraulic mechanical arm 4, a cold heading upper die 5, a cold heading lower die 6, a transfer mechanical arm 7, a cold heading oil nozzle 8, a small oil pump 9, an oil storage tank 10, an overflow hole 11, a material receiving tank 13, an oscillating chip removal bottom plate 14, an electric indexing shaft 15, an electromagnet 16, an electric telescopic discharge plate 17 and a discharge tank 18. After experimental optimization, the equipment can polish and remove burrs on rivet nuts, evenly add cold heading oil in a cold heading die, and automatically discharge the rivet nuts after cold heading, thereby ensuring the cold heading quality and precision of the rivet nuts, and can oscillate and remove oil and chips on the rivet nuts after cold heading, thereby facilitating the collection and storage of the rivet nuts, and can also perform oil and chip separation to facilitate the recycling of cold heading oil, thereby saving production costs.

[0016] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention belongs to the protection scope of the present invention.

Claims

1. A cold heading forming equipment for rivet nuts, characterized in that: The invention comprises a frame (1), wherein a sandblasting and chip removal mechanism (2) is arranged on the top right side of the frame (1), and a cold heading mechanism (3) is arranged on the left side of the sandblasting and chip removal mechanism (2). The cold heading mechanism (3) comprises a hydraulic mechanical arm (4), a cold heading upper die (5), a cold heading lower die (6), a transfer mechanical arm (7), a cold heading oil spray head (8), a small oil pump (9), an oil storage tank (10) and an overflow hole (11). An electric ejector rod (24) is arranged at the bottom of the film hole of the cold heading lower die (6), and a plurality of cold heading oil spray heads (8) are arranged on the upper side of the cold heading lower die (6). The cold heading oil spray heads (8) are connected to the oil storage tank (10) through a small oil pump (9). The oil storage tank (10) is located below the cold heading lower die (6). An overflow hole (11) is provided at the top of the die (6), and the overflow hole (11) is connected to the oil storage tank (10). A transfer mechanical arm (7) is provided on the side of the cold heading lower die (6). A cold heading upper die (5) is provided directly above the cold heading lower die (6) via a hydraulic mechanical arm (4). A cleaning and discharging mechanism (12) is provided on the left side of the cold heading mechanism (3). The cleaning and discharging mechanism (12) comprises a material receiving trough (13), an oscillating chip removal bottom plate (14), an electric indexing shaft (15), an electromagnet (16), an electric telescopic discharging plate (17) and a discharging trough (18). An oscillating chip removal bottom plate (14) is provided at the bottom of the material receiving trough (13). The right end of the oscillating chip removal bottom plate (14) is connected to the electric indexing shaft (15). ) is connected to the right end bottom of the material receiving trough (13); the left end of the oscillating chip removal bottom plate (14) is connected to the left end bottom of the material receiving trough (13) by suction through an electromagnet (16); the left end of the oscillating chip removal bottom plate (14) is extended to be provided with an electric telescopic discharge plate (17); a discharge trough (18) is provided below the electric telescopic discharge plate (17); a control center (19) is provided in the middle of the frame (1); the control center (19) is respectively connected to the sandblasting chip removal mechanism (2), the hydraulic mechanical arm (4), the cold heading upper die (5), the cold heading lower die (6), the transfer mechanical arm (7), the cold heading oil nozzle (8), the small oil pump (9), the oscillating chip removal bottom plate (14), the electric indexing shaft (15), the electromagnet (16) and the electric The movable telescopic discharge plates (17) are connected one by one, the film hole height of the cold heading lower die (6) is three times the height of the rivet nut workpiece, the top of the electric ejector rod (24) is hidden and arranged at the bottom of the film hole of the cold heading lower die (6), the maximum top height of the electric ejector rod (24) is greater than the film hole height of the cold heading lower die (6), there are a plurality of cold heading oil nozzles (8), the cold heading oil nozzles (8) are spirally evenly distributed on the upper inner side surface of the cold heading lower die (6), the cold heading oil nozzles (8) are radially arranged, the small oil pump (9) is a variable speed oil pump, the outer side of the cold heading mechanism (3) is covered with a transparent dust cover (20), and a dust removal exhaust fan and a cooling air inlet fan are staggered and arranged correspondingly in the transparent dust cover (20),A plurality of steel brush bristles (21) are evenly arranged on the top of the oscillating chip removal bottom plate (14), a constant temperature fan (22) is arranged above the material collection trough (13), a recovery filter trough (23) is arranged below the oscillating chip removal bottom plate (14), a chip removal filter screen is detachably arranged in the recovery filter trough (23), the bottom of the recovery filter trough (23) is connected to the oil storage trough (10), and the recovery filter trough (23) is located above the oil storage trough (10).

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