Fastener heat treatment equipment and method

Abstract

The invention belongs to the technical field of heat treatment equipment, and particularly relates to fastener heat treatment equipment and method. The device comprises a rack, a furnace body and a conveying mechanism, the furnace body comprises a plurality of heating furnaces and holding furnaces; the conveying mechanism comprises an upper-layer conveying mesh belt and a lower-layer conveying mesh belt which are opposite in conveying direction, the discharging end of the upper-layer conveying mesh belt and the feeding end of the lower-layer conveying mesh belt are located at the same end of the furnace body, and a feeding port is formed in one side of the lower-layer conveying mesh belt; a lifting mechanism is mounted on the rack and used for transferring fasteners on the lower-layer conveying mesh belt to the upper-layer conveying mesh belt, and the lifting mechanism is arranged at one end of the furnace body; the lifting mechanism comprises a lifting frame, a transmission chain, a plurality of hoppers installed on the transmission chain and a driving motor used for driving the transmission chain to rotate. By arranging the double-layer conveying mesh belt, the heating furnace can preheat and heat fasteners at the same time, the equipment length is reduced, and the equipment cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of heat treatment equipment, and in particular to a fastener heat treatment equipment and method. Background Art

[0002] Automotive fasteners are a type of automotive mechanical parts used for fastening and connection and are extremely widely used. Heat treatment is a process in which steel is heated and cooled in the solid state to change its internal structure, thereby obtaining the desired properties. Heat treatment is a crucial step in the manufacturing of machine parts and tools, and is extremely important for unleashing the potential of metal materials, improving the performance of parts, enhancing product quality, and extending their service life.

[0003] Currently, most fasteners are piled on a conveyor belt, which then transports the fasteners to a heat treatment furnace. The mesh belt furnace is generally equipped with multiple heating zones, which perform low-temperature preheating and high-temperature heating on the fasteners respectively. This makes the mesh belt furnace equipment longer and occupies a larger space. In addition, the fasteners are piled on the conveyor belt, and different parts are heated unevenly, resulting in reduced strength of the fasteners. Summary of the Invention

[0004] In response to the deficiencies in the prior art, the present invention provides a fastener heat treatment device and method, which simultaneously preheats and heats the fasteners by providing a double-layer conveyor belt, thereby reducing the length of the equipment and aiming to solve the problems in the background technology.

[0005] In order to achieve the above technical objectives, the specific technical scheme of the present invention is as follows: a fastener heat treatment equipment proposed in the present invention includes: a frame, a furnace body and a conveying mechanism; the furnace body includes multiple heating furnaces and an insulation furnace; the conveying mechanism includes an upper conveyor mesh belt and a lower conveyor mesh belt with opposite conveying directions, wherein the discharge end of the upper conveyor mesh belt and the feed end of the lower conveyor mesh belt are at the same end of the furnace body, and a feed port is provided on one side of the lower conveyor mesh belt; a lifting mechanism is installed on the frame for transferring the fasteners on the lower conveyor mesh belt to the upper conveyor mesh belt, the lifting mechanism is provided at one end of the furnace body, and an insulation cover is provided on the periphery of the lifting mechanism; the lifting mechanism includes a lifting frame, a transmission chain, multiple hoppers installed on the transmission chain, and a drive motor for driving the transmission chain to rotate.

[0006] As a preferred technical solution of the present invention, a pair of connecting seats are rotatably connected at both ends of the hopper, the connecting seats are fixedly connected to the transmission chain, a rotating shaft is rotatably connected between the two connecting seats, and the hopper is driven to rotate when the rotating shaft rotates. A gear is fixedly connected to one end of the rotating shaft, and a rack that cooperates with the gear is fixedly installed on the lifting frame.

[0007] As a preferred technical solution of the present invention, the hopper is slidably connected to the rotating shaft, a convex strip is provided on the surface of the rotating shaft, a sliding sleeve is fixedly connected to the hopper and slidably connected to the convex strip, and a vibration spring is connected between the hopper and the two connecting seats, and the vibration spring is sleeved on the rotating shaft.

[0008] As a preferred technical solution of the present invention, the lifting frame is fixedly connected to a connecting piece, the connecting piece is fixedly connected to a vertically arranged inclined rail, the distance between the inclined rail and the hopper gradually decreases from bottom to top, and a track groove is provided on the surface of the inclined rail, the hopper is fixedly connected to a rod body, and one end of the rod body is connected to a roller that cooperates with the track groove.

[0009] As a preferred technical solution of the present invention, a bracket is fixedly connected to the connecting seat, a tension spring is fixedly connected between the bracket and the hopper, and a blocking rod for limiting the hopper is fixedly connected to the connecting seat.

[0010] As a preferred technical solution of the present invention, a pair of rotating rollers are rotatably connected to the lifting frame, a sprocket connected to the transmission chain is fixedly connected to the rotating rollers, and the driving motor shaft is connected to one of the rotating rollers.

[0011] As an optimal technical solution of the present invention, a material blocking mechanism is installed at one end of the furnace body close to the lifting mechanism; the material blocking mechanism includes a fixed plate and a baffle, the fixed plate is provided with a slide rail, the slide rail is slidably connected to the lifting seat, and the lifting seat is fixedly connected to the baffle through a fixed rod.

[0012] As a preferred technical solution of the present invention, a screw is threadedly connected to the fixing plate, and one end of the screw is rotatably connected to the lifting seat; the baffle has a V-shaped structure.

[0013] As a preferred technical solution of the present invention, a heating box is installed on the top of the heating furnace, and a plurality of heat radiation tubes are installed in the heating box.

[0014] A heat treatment method for an automobile fastener comprises the following steps:

[0015] Step 1: The automotive fasteners are transported to the lower conveyor mesh belt through the feed port. The lower conveyor mesh belt transports the automotive fasteners into the furnace body. During the transportation process, the heating furnace preheats the automotive fasteners on the lower conveyor mesh belt at a low temperature.

[0016] Step 2: The automotive fasteners on the lower conveyor belt are transported to the lifting mechanism, which transports the automotive fasteners on the lower conveyor belt to the upper conveyor belt and disperses the automotive fasteners through the material blocking mechanism;

[0017] Step 3: When the upper conveyor belt drives the automotive fasteners through the furnace body, the heating furnace heats the automotive fasteners at high temperature. After being kept warm in the insulation furnace, the upper conveyor belt transports the heated automotive fasteners to the next equipment for rapid cooling.

[0018] The beneficial effects of the present invention are:

[0019] 1. The present invention provides an upper conveyor mesh belt and a lower conveyor mesh belt with opposite transport directions. While the furnace body heats the fasteners on the upper conveyor mesh belt at high temperature, it preheats the fasteners on the lower conveyor mesh belt at low temperature. This allows the heating furnace to heat and preheat the fasteners at the same time, thereby shortening the overall length of the mesh belt furnace.

[0020] 2. The present invention is capable of transporting the fasteners on the lower conveyor mesh belt to the upper conveyor mesh belt by providing a lifting mechanism, and the fasteners are evenly dropped onto the upper conveyor mesh belt through the shaking of the hopper, and the fasteners are further dispersed by the dispersion mechanism, thereby avoiding the accumulation of fasteners and ensuring uniform heating of the fasteners. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural schematic diagram of a fastener heat treatment equipment proposed by the present invention.

[0022] Figure 2 Schematic cross-sectional view of the present invention.

[0023] Figure 3 This is a structural schematic diagram of the lifting mechanism proposed in the present invention.

[0024] Figure 4 This is a schematic structural diagram of the hopper proposed in the present invention.

[0025] Figure 5 for Figure 4 A partial enlarged view of point A in the middle.

[0026] Figure 6 This is a schematic structural diagram of the inclined rail proposed in the present invention.

[0027] Figure 7 This is a structural schematic diagram of the material blocking mechanism proposed in the present invention.

[0028] The corresponding names of the reference numerals in the figures are as follows: 1. frame; 2. furnace body; 201. holding furnace; 202. heating furnace; 3. conveying mechanism; 301. upper conveying mesh belt; 302. lower conveying mesh belt; 303. feeding port; 4. heating box; 401. heat radiation tube; 5. lifting mechanism; 501. lifting frame; 502. hopper; 5020. vibration spring; 5021. rod; 5022. roller; 5023. gear; 5024. bracket; 5025. connecting seat; 5026, tension spring; 5027, rotating shaft; 5028, convex strip; 5029, sliding sleeve; 50210, baffle rod; 503, inclined rail; 5031, track groove; 5032, connecting piece; 504, rack; 505, driving motor; 506, transmission chain; 507, sprocket; 508, rotating roller; 6, material blocking mechanism; 601, fixed plate; 602, lifting seat; 603, screw; 604, fixed rod; 605, baffle; 606, sliding rail; 7, thermal insulation cover. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0030] Embodiment: This embodiment discloses a fastener heat treatment device, such as Figure 1-Figure 7As shown, it includes: a frame 1, a furnace body 2 and a conveying mechanism 3, and the conveying mechanism 3 passes through the furnace body 2; the furnace body 2 includes multiple heating furnaces 202 and a heat preservation furnace 201, wherein a heating box 4 is installed on the top of the heating furnace 202, and multiple heat radiation tubes 401 are installed in the heating box 4. The conveying mechanism 3 includes an upper conveying mesh belt 301 and a lower conveying mesh belt 302 with opposite conveying directions. The upper conveying mesh belt 301 and the lower conveying mesh belt 302 are made of high-temperature resistant metal mesh belts. Since the heat radiation tube 401 is close to the upper conveying mesh belt 301 and the lower conveying mesh belt 302 is farther away, therefore, the heat radiation tube 401 heats the fasteners on the upper conveyor mesh belt 301 to a higher temperature, and heats the fasteners on the lower conveyor mesh belt 302 to a lower temperature; wherein, the discharge end of the upper conveyor mesh belt 301 and the feed end of the lower conveyor mesh belt 302 are at the same end of the furnace body 2, that is, the end close to the holding furnace 201, and a feed port 303 is provided on one side of the lower conveyor mesh belt 302. A lifting mechanism 5 is installed on the frame 1 for transferring the fasteners on the lower conveyor mesh belt 302 to the upper conveyor mesh belt 301. The lifting mechanism 5 is provided at the furnace The heating furnace 202 preheats the fasteners on the lower conveyor mesh belt 302, gradually raising the temperature of the fasteners from room temperature to 500-600℃, removing surface moisture and oil. Pollution is eliminated, thermal stress deformation is reduced, and the temperature is slowly increased to avoid sudden thermal cracking of cold parts; at the same time, the heating furnace 202 quickly heats the automotive fasteners on the upper conveyor mesh belt 301 to 800-900°C for quenching; in this embodiment, by providing the upper conveyor mesh belt 301 and the lower conveyor mesh belt 302, the heating furnace 202 can simultaneously heat and preheat the fasteners on the upper conveyor mesh belt 301 and the lower conveyor mesh belt 302 respectively, and the preheating and heating areas are in the same heating furnace 202, thereby shortening the overall length of the furnace body 2, saving equipment resources, and reducing costs.

[0031] like Figure 3-Figure 5As shown, the lifting mechanism 5 includes a lifting frame 501, a transmission chain 506, a plurality of hoppers 502 mounted on the transmission chain 506, and a drive motor 505 for driving the transmission chain 506 to rotate. The groove cross-section of the hopper 502 is triangular in shape. The drive motor 505 is installed outside the heat preservation cover 7. The lifting frame 501 is fixedly mounted on the frame 1. The transmission chain 506 is made of high-temperature resistant metal. A pair of rotating rollers 508 are rotatably connected to the lifting frame 501. The rotating rollers 508 are fixedly connected to a sprocket 507 that is connected to the transmission chain 506. The rotating shaft of the drive motor 505 is connected to one of the rotating rollers 508. 08 connection, drives the rotating roller 508 to rotate through the driving motor 505, drives the transmission chain 506 to rotate, and then drives the hopper 502 to rise and fall; wherein, a pair of connecting seats 5025 are rotatably connected at both ends of the hopper 502, the connecting seats 5025 are fixedly connected to the transmission chain 506, and a rotating shaft 5027 is rotatably connected between the two connecting seats 5025. When the rotating shaft 5027 rotates, it drives the hopper 502 to rotate, and the hopper 502 can slide on the rotating shaft 5027. One end of the rotating shaft 5027 is fixedly connected to a gear 5023, and a gear that cooperates with the gear 5023 is fixedly installed on the lifting frame 501. The rack 504 is higher than the upper conveyor mesh belt 301; in specific implementation: in this embodiment, the upper conveyor mesh belt 301, the lower conveyor mesh belt 302 and the lifting mechanism 5 adopt an intermittent motion mode. The lower conveyor mesh belt 302 does not move once, and the fasteners are transported to the hopper 502. Then the lower conveyor mesh belt 302 stops moving, and the drive motor 505 moves with the transmission chain 506, driving the hopper 502 to rise. When the hopper 502 rises to the same height as the upper conveyor mesh belt 301, the gear 5023 just meshes with the rack 504, and as the hopper 502 continues to rise When the hopper 502 is lifted up, the gear 5023 is pulled back and the rack 504 is pulled down, so that the gear 5023 is pulled back and the rack 504 is pulled up, so that the hopper 502 is lifted up and the rack 504 is pulled back, so that the hopper 502 is lifted up and the rack 504 is pulled back, so that the hopper 502 is pulled back and the rack 504 is pulled back, so that the hopper 502 is pulled back and the rack 504 is pulled back, so that the hopper 502 is pulled back and the rack 504 is pulled back, so that the hopper 502 is pulled back and the rack 504 is pulled back, so that the hopper 502 is pulled back and the rack 504 is pulled back, so that the hopper 502 is pulled back and the rack 504 is pulled back, so that the hopper 502 is pulled back and the rack 504 is pulled back, so that the hopper

[0032] Preferably, a bracket 5024 is fixedly connected to the connecting seat 5025, a tension spring 5026 is fixedly connected between the bracket 5024 and the hopper 502, and a baffle 50210 for limiting the hopper 502 is fixedly connected to the connecting seat 5025. When the baffle 50210 contacts the hopper 502, the hopper 502 is in a horizontal state; when the gear 5023 is separated from the rack 504, the hopper 502 returns to a horizontal state under the tension of the tension spring 5026.

[0033] like Figure 4-6 As shown, the surface of the rotating shaft 5027 is provided with a convex strip 5028, and the hopper 502 is fixedly connected to a sliding sleeve 5029 that is slidably connected to the convex strip 5028, so that when the rotating shaft 5027 rotates, it can drive the hopper 502 to rotate, and the hopper 502 can slide on the rotating shaft 5027, and a vibration spring 5020 is connected between the hopper 502 and the two connecting seats 5025. The vibration spring 5020 is sleeved on the rotating shaft 5027, and the performance of the reciprocating vibration of the hopper 502 can be improved by the vibration spring 5020; A connecting piece 5032 is fixedly connected to the connecting piece 5032, and a vertically arranged inclined rail 503 is fixedly connected to the connecting piece 5032. The height of the inclined rail 503 is lower than the height of the rack 504. The distance between the inclined rail 503 and the hopper 502 gradually decreases from bottom to top, and a track groove 5031 is provided on the surface of the inclined rail 503. The hopper 502 is fixedly connected to a rod body 5021, and one end of the rod body 5021 is connected to a roller 5022 that cooperates with the track groove 5031. In specific implementation: when the hopper 502 receives the fastener on the lower conveyor mesh belt 302, the transmission chain 506 drives the hopper 502 rises, and during the rising process, the roller 5022 contacts the track groove 5031. As the hopper 502 rises, under the action of the track groove 5031, the hopper 502 slides to the right along the rotating shaft 5027, squeezing the vibration spring 5020 on the right side. The vibration spring 5020 on the right side is compressed. When the roller 5022 separates from the track groove 5031, the hopper 502 slides to the left along the rotating shaft 5027 under the elastic force of the vibration spring 5020 on the right side, squeezing the vibration spring 5020 on the left side. 0, the hopper 502 vibrates back and forth on the rotating shaft 5027, and the reciprocating vibration can reach 6-8 times at this time. When the roller 5022 separates from the track groove 5031, the gear 5023 just engages with the rack 504. As the hopper 502 rises, under the action of the rack 504, the hopper 502 tilts downward. During the tilting process, the fasteners in the hopper 502 are completely dropped onto the upper conveyor mesh belt 301 through the left and right reciprocating vibration of the hopper 502, and the fasteners can be evenly dropped on the upper conveyor mesh belt 301.

[0034] like Figure 2 and Figure 7As shown, a material blocking mechanism 6 is installed at one end of the furnace body 2 near the lifting mechanism 5, which is used to prevent the fasteners from accumulating on the upper conveyor mesh belt 301; the material blocking mechanism 6 includes a fixed plate 601 and a baffle 605, the fixed plate 601 is fixedly connected to the heating furnace 202, and a vertical slide rail 606 is provided on the fixed plate 601, and the slide rail 606 is slidably connected to the lifting seat 602, and the lifting seat 602 is fixedly connected to the baffle 605 through a fixed rod 604; a screw 603 is threadedly connected to the fixed plate 601, and one end of the screw 603 is rotatably connected to the lifting seat 602; the baffle 605 has a V-shaped structure; the height of the baffle 605 can be adjusted by rotating the screw 603, and the distance between the baffle 605 and the upper conveyor mesh belt 301 is adjusted to prevent the fasteners from accumulating on the upper conveyor mesh belt 301, and by setting the baffle 605 in a V-shaped structure, the fasteners in the middle can be dispersed to both sides, so that the fasteners are evenly dispersed.

[0035] This embodiment also discloses a heat treatment method for automotive fasteners, based on the above-mentioned heat treatment equipment, comprising the following steps:

[0036] Step 1: The automotive fasteners are transported to the lower conveyor mesh belt 302 through the feed port 303. The lower conveyor mesh belt 302 transports the automotive fasteners into the furnace body 2. During the transportation process, the heating furnace 202 preheats the automotive fasteners on the lower conveyor mesh belt 302 at a low temperature, gradually heating the fasteners from room temperature to 500-600°C.

[0037] Step 2: The automotive fasteners on the lower conveyor mesh belt 302 are transported to the lifting mechanism 5. The lifting mechanism 5 transports the automotive fasteners on the lower conveyor mesh belt 302 to the upper conveyor mesh belt 301, and the material blocking mechanism 6 disperses the automotive fasteners so that the automotive fasteners are evenly heated at high temperatures.

[0038] Step 3: When the upper conveyor mesh belt 301 drives the automotive fasteners through the furnace body 2, the heating furnace 202 heats the automotive fasteners to a high temperature of 800-900°C. After being kept warm by the holding furnace 201, the upper conveyor mesh belt 301 transports the heated automotive fasteners to the next device for rapid cooling.

[0039] Finally, it should be noted that in the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limiting the present invention.

[0040] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A fastener heat treatment equipment, characterized in that: include: A frame (1), a furnace body (2) and a conveying mechanism (3); The furnace body (2) includes a plurality of heating furnaces (202) and a heat preservation furnace (201); The conveying mechanism (3) comprises an upper conveying mesh belt (301) and a lower conveying mesh belt (302) with opposite conveying directions, wherein the discharge end of the upper conveying mesh belt (301) and the feed end of the lower conveying mesh belt (302) are located at the same end of the furnace body (2), and a feed port (303) is provided on one side of the lower conveying mesh belt (302); The frame (1) is provided with a lifting mechanism (5) for transferring fasteners on the lower conveyor mesh belt (302) to the upper conveyor mesh belt (301); the lifting mechanism (5) is provided at one end of the furnace body (2), and a heat-insulating cover (7) is provided around the lifting mechanism (5); The lifting mechanism (5) comprises a lifting frame (501), a transmission chain (506), a plurality of hoppers (502) mounted on the transmission chain (506), and a driving motor (505) for driving the transmission chain (506) to rotate.

2. The fastener heat treatment equipment according to claim 1, characterized in that: A pair of connecting seats (5025) are rotatably connected at both ends of the hopper (502), the connecting seats (5025) are fixedly connected to the transmission chain (506), a rotating shaft (5027) is rotatably connected between the two connecting seats (5025), and when the rotating shaft (5027) rotates, it drives the hopper (502) to rotate, one end of the rotating shaft (5027) is fixedly connected to a gear (5023), and a rack (504) that cooperates with the gear (5023) is fixedly installed on the lifting frame (501).

3. The fastener heat treatment equipment according to claim 1, characterized in that: The hopper (502) is slidably connected to the rotating shaft (5027), the surface of the rotating shaft (5027) is provided with a convex strip (5028), the hopper (502) is fixedly connected to a sliding sleeve (5029) slidably connected to the convex strip (5028), and a vibration spring (5020) is connected between the hopper (502) and the two connecting seats (5025), and the vibration spring (5020) is sleeved on the rotating shaft (5027).

4. The fastener heat treatment equipment according to claim 3, characterized in that: The lifting frame (501) is fixedly connected to a connecting piece (5032), and a vertically arranged inclined rail (503) is fixedly connected to the connecting piece (5032). The distance between the inclined rail (503) and the hopper (502) gradually decreases from bottom to top, and a track groove (5031) is provided on the surface of the inclined rail (503). The hopper (502) is fixedly connected to a rod body (5021), and one end of the rod body (5021) is connected to a roller (5022) that cooperates with the track groove (5031).

5. The fastener heat treatment equipment according to claim 4, characterized in that: The connecting seat (5025) is fixedly connected to a bracket (5024), a tension spring (5026) is fixedly connected between the bracket (5024) and the hopper (502), and a stop rod (50210) for limiting the hopper (502) is fixedly connected to the connecting seat (5025).

6. The fastener heat treatment equipment according to claim 5, characterized in that: A pair of rotating rollers (508) are rotatably connected to the lifting frame (501), a sprocket (507) that is matched with the transmission chain (506) is fixedly connected to the rotating rollers (508), and a rotating shaft of the driving motor (505) is connected to one of the rotating rollers (508).

7. The fastener heat treatment equipment according to claim 6, characterized in that: A material blocking mechanism (6) is installed at one end of the furnace body (2) close to the lifting mechanism (5); the material blocking mechanism (6) comprises a fixed plate (601) and a baffle (605); a slide rail (606) is provided on the fixed plate (601); the slide rail (606) is slidably connected to the lifting seat (602); and the lifting seat (602) is fixedly connected to the baffle (605) via a fixing rod (604).

8. The fastener heat treatment equipment according to claim 7, characterized in that: The fixing plate (601) is threadedly connected with a screw rod (603), and one end of the screw rod (603) is rotatably connected to the lifting seat (602); the baffle (605) is in a V-shaped structure.

9. The fastener heat treatment equipment according to claim 8, characterized in that: A heating box (4) is installed on the top of the heating furnace (202), and a plurality of heat radiation tubes (401) are installed in the heating box (4).

10. A method for heat treating automobile fasteners, using the fastener heat treatment apparatus according to claim 9, characterized in that: The following steps are involved: Step 1: The automobile fasteners are transported to the lower conveyor mesh belt (302) through the feed port (303). The lower conveyor mesh belt (302) transports the automobile fasteners into the furnace body (2). During the transportation process, the heating furnace (202) preheats the automobile fasteners on the lower conveyor mesh belt (302) at a low temperature. Step 2: The automobile fasteners on the lower conveyor mesh belt (302) are conveyed to the lifting mechanism (5), and the automobile fasteners on the lower conveyor mesh belt (302) are transported to the upper conveyor mesh belt (301) by the lifting mechanism (5), and the automobile fasteners are dispersed by the blocking mechanism (6); Step 3: When the upper conveyor mesh belt (301) drives the automobile fasteners through the furnace body (2), the heating furnace (202) heats the automobile fasteners at a high temperature. After being kept warm by the insulation furnace (201), the upper conveyor mesh belt (301) transports the heated automobile fasteners to the next device for rapid cooling.

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