A thermal aging furnace for the production of blind rivets

Abstract

The present invention relates to the field of production of blind rivets, and particularly to a thermal aging furnace for the production of blind rivets. The present invention can more effectively reduce the temperature difference between blind rivets, enable the blind rivets to heat up and be heated more quickly, so as to greatly make the quality of the blind rivets consistent after heat treatment and more effectively improve the production quality of blind rivets. The present invention includes a housing, a hatch, a mounting rack, etc.; a gas outlet pipe is provided at the lower part of one side of the housing, the hatch is clamped on the side of the housing away from the gas outlet pipe, and three mounting racks are provided on the inner wall of the housing. By means of a plurality of stirring rods moving back and forth to stir a plurality of blind rivets on the placement rack, the blind rivets can be heated comprehensively. At the same time, when the plurality of stirring rods move back and forth left and right, they will further stir the plurality of blind rivets on the placement rack, fully turn over the blind rivets, and thus each surface of the blind rivets can be uniformly heated.

Description

Technical Field

[0001] The present invention relates to the field of blind rivet production, and particularly to a thermal aging furnace for blind rivet production. Background Art

[0002] Blind rivets are a type of rivet for single-sided riveting, but special tools are required for riveting. During riveting, the rivet core is pulled by a special riveting gun to expand the rivet body and play a riveting role. This type of rivet is particularly suitable for riveting occasions where it is inconvenient to use ordinary rivets, so it is widely used in products such as buildings, automobiles, ships, airplanes, machines, electrical appliances, furniture, etc. Among them, the open-end oval head blind rivet is the most widely used. The countersunk head blind rivet is suitable for riveting occasions where a smooth surface is required, and the closed-end blind rivet is suitable for riveting occasions requiring higher loads and certain sealing performance.

[0003] The production process of blind rivets mainly includes blank preparation, upset forming, cleaning, heat treatment, thread rolling, surface treatment, etc. Heat treatment refers to putting the cleaned blind rivets into a heat treatment furnace for heating and holding, and then air cooling. By appropriate heat treatment processes, the internal tissue structure of steel can be changed to control the degree of tissue transformation and the morphology of transformation products during the phase change process, thereby improving the performance of blind rivets.

[0004] Currently, when using a heat treatment furnace to heat-treat blind rivets, static treatment is generally adopted. However, since the blind rivets are stacked together, some of the blind rivets blocked will heat up more slowly, while some of the blind rivets exposed to the outside will heat up faster. As a result, the heating speed of the blind rivets in the heat treatment furnace is inconsistent, with a large temperature difference. Moreover, there is also a difference in the heating temperature between the blind rivets in the lower layer and those in the upper layer, which will lead to differences in the quality of the blind rivets after heat treatment. In addition, there will be impurities on the surface of the produced blind rivets, and these impurities adhering to the surface of the blind rivets will also affect the efficiency during heat treatment. Blind rivets with improper heat treatment will produce cracks, etc., thus affecting the production quality of blind rivets. Summary of the Invention

[0005] The purpose of the present invention is to provide a thermal aging furnace for blind rivet production, which can more effectively reduce the temperature difference between blind rivets, enable the blind rivets to heat up more quickly, so as to greatly make the quality of the blind rivets after heat treatment consistent, and more effectively improve the production quality of blind rivets.

[0006] A thermal aging furnace for the production of blind rivets, comprising a housing, a hatch, a mounting frame, a placement rack, a driving motor, a reciprocating lead screw, a fixed frame, a hot air blower, a stirring mechanism and a moving mechanism. An air outlet pipe is provided at the lower part of one side of the housing. The hatch is clamped on the side of the housing away from the air outlet pipe. Three mounting frames are fixedly connected to the inner wall of the housing, and the three mounting frames are arranged at uniform intervals. A placement rack is placed on each mounting frame. The placement rack is made of aluminum alloy. The driving motor is fixedly connected to the upper part of the side of the housing away from the hatch. The reciprocating lead screw is fixedly connected to the output shaft of the driving motor. The reciprocating lead screw is rotatably connected to the housing. The fixed frame is fixedly connected to one side of the top of the upper mounting frame. The other end of the reciprocating lead screw is rotatably connected to the fixed frame. The hot air blower is fixedly connected to the top of the housing. The air inlet of the hot air blower is communicated with the housing. A stirring mechanism is provided between the three mounting frames, and a moving mechanism is provided between the three mounting frames.

[0007] Furthermore, a handle is provided on the upper part of the hatch.

[0008] Furthermore, the stirring mechanism includes a first moving rod, a sliding rod, a sliding frame, a stirring rod and a tension spring. The first moving rod is slidably connected between one sides of the three mounting frames. The upper part of the first moving rod is threadedly connected to the reciprocating lead screw. A sliding rod is slidably connected to the side of each mounting frame away from the first moving rod. The three sliding rods are fixedly connected to the first moving rod. A sliding frame is slidably connected to each sliding rod. A plurality of stirring rods are sleeved on each sliding frame. The plurality of stirring rods are arranged at uniform intervals. Each stirring rod contacts the placement rack. A tension spring is connected between each stirring rod and the sliding frame.

[0009] Furthermore, the moving mechanism includes a moving frame, a contact rod, an extension rod, a cam and a return spring. The moving frame is slidably connected between one sides of the three mounting frames close to the driving motor. A contact rod is fixedly connected to the side of each sliding frame close to the first moving rod. Three extension rods are fixedly connected to the moving frame. The extension rods are slidably connected to the mounting frames. The contact rod contacts the extension rod. The cam is fixedly connected to the side of the reciprocating lead screw close to the driving motor. The upper part of the moving frame contacts the cam. A return spring is connected between the sliding rod and the sliding frame.

[0010] Furthermore, it also includes a vibration mechanism, each of the slides is provided with a vibration mechanism, the vibration mechanism includes a movable plate, a limit frame, a guide rod and a vibration rod, each of the slides is slidably connected to a movable plate, each of the movable plates is provided with a number of protrusions, the top of each stirring rod is in contact with the lower side of the movable plate, the top of each mounting frame on a side away from the extension rod is fixedly connected to the limit frame, the limit frame is located above the movable plate, the top of each sliding rod on a side close to the limit frame is fixedly connected to the guide rod, each of the movable plates is slidably connected to a vibration rod, one end of the vibration rod is in contact with the top of the movable plate, and the vibration rod is slidably connected to the guide rod.

[0011] Furthermore, it also includes a swing mechanism, each of the sliding rods is provided with a swing mechanism, the swing mechanism includes a limit block, a moving rod 2, a fixed plate and a strong spring, each of the sliding rods is fixedly connected to two limit blocks, the two limit blocks form a group, and a moving rod 2 is slidably connected between the two limit blocks in each group, the moving rod 2 is in contact with both sides of the placement rack, and each of the sliding rods is fixedly connected to a fixed plate on one side away from the moving rod 1, and a strong spring is connected between the moving rod 2 and the fixed plate.

[0012] Furthermore, a toggle ring is included, and each stirring rod is fixedly connected to the toggle ring.

[0013] Furthermore, it also includes a stopper and a stopper rod. Each of the guide rods is fixedly connected to a stopper, and each of the vibration rods is fixedly connected to a stopper rod.

[0014] Compared with the prior art, the present invention has the following advantages: 1. In the present invention, the blind rivets on the placement rack are heated and kept warm by a hot air blower, and at the same time, the driving motor drives the reciprocating screw to rotate, and the rotation of the reciprocating screw drives the cam to rotate. When the reciprocating screw rotates, it drives the moving rod to move back and forth, so that the sliding rod moves back and forth and drives a number of stirring rods to move together, and the reciprocating movement of the several stirring rods will stir the several blind rivets on the placement rack, so that the blind rivets can be fully heated, and the rotation of the cam will push the moving rack to move back and forth, so that the sliding rod moves back and forth and drives a number of stirring rods to move together, and the reciprocating movement of the several stirring rods will further stir the several blind rivets on the placement rack, fully turn over the blind rivets, and then make all surfaces of the blind rivets evenly heated, so that the several blind rivets can be evenly heated and heated, thereby improving the heat treatment effect of the blind rivets, so as to improve the production quality of the blind rivets.

[0015] 2. In the present invention, the moving plate moves and is pushed by the limiting frame, causing the moving plate to move downward and always contact a plurality of stirring rods. The reciprocating movement of the sliding frame to the left and right will drive the moving plate to reciprocate left and right. The reciprocating movement of the moving plate left and right will cause a plurality of protrusions to continuously push the vibrating rod, causing the moving plate to vibrate the plurality of stirring rods. Thus, when the plurality of stirring rods stir a plurality of blind rivets on the placement rack, the plurality of stirring rods continuously vibrate the blind rivets, shaking off the impurities on the blind rivets, enabling the surface of the blind rivets to be fully and evenly heated and insulated, avoiding the blind rivets from falling off or cracking due to improper heat treatment, and effectively reducing problems such as cracks on the surface of the blind rivets. Therefore, the heat treatment effect of the blind rivets is better, effectively improving the production quality of the blind rivets.

[0016] 3. In the present invention, when the sliding frame moves to the side away from the first moving rod and pushes the second moving rod to move, the second moving rod pushes the placement rack to move. When the sliding frame disengages, the strong spring resets and drives the second moving rod and the placement rack to reset. Repeating this process causes the placement rack to reciprocate and shake, and shake the plurality of blind rivets on it, enabling the blind rivets to be evenly laid flat on the placement rack after being turned over. Thus, hot air can be more evenly introduced between the blind rivets to heat and insulate the blind rivets, more effectively reducing the temperature difference between the blind rivets, enabling the blind rivets to heat up more quickly, and enabling the quality of the blind rivets after heat treatment to be more consistent to a great extent, more effectively improving the production quality of the blind rivets. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the first three-dimensional structure schematic diagram of the present invention.

[0018] Figure 2 It is the second three-dimensional structure schematic diagram of the present invention.

[0019] Figure 3 It is the sectional three-dimensional structure schematic diagram of the present invention.

[0020] Figure 4 For the present invention Figure 3 The enlarged three-dimensional structure schematic diagram of A in it.

[0021] Figure 5 It is the partial three-dimensional structure schematic diagram of the present invention.

[0022] Figure 6 For the present invention Figure 5 The enlarged three-dimensional structure schematic diagram of B in it.

[0023] Figure 7 It is the three-dimensional structure schematic diagram of the placement rack of the present invention.

[0024] Figure 8It is a partial three-dimensional structural schematic diagram of the moving mechanism and the vibration mechanism of the present invention.

[0025] Figure 9 It is a partial three-dimensional structural schematic diagram of the vibration mechanism and the swing mechanism of the present invention.

[0026] Figure 10 It is a schematic diagram of a partially split three-dimensional structure of the present invention.

[0027] In the above drawings: 1: shell, 2: hatch, 3: mounting frame, 4: placement frame, 5: driving motor, 51: reciprocating screw, 52: fixed frame, 53: hot air blower, 61: moving rod one, 62: sliding rod, 63: sliding frame, 64: stirring rod, 65: tension spring, 71: moving frame, 72: contact rod, 73: extension rod, 74: cam, 75: reset spring, 81: moving plate, 82: limiting frame, 83: guide rod, 84: vibration rod, 91: limiting block, 92: moving rod two, 93: fixed plate, 94: strong spring, 10: toggle ring, 111: block, 112: block rod. DETAILED DESCRIPTION

[0028] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can all be customized according to the description in the specification and drawings. The specific connection methods of each part all adopt conventional means such as mature bolts, rivets, welding, and bonding in the prior art, which will not be described in detail here.

[0029] Embodiment 1: A heat aging furnace for producing blind rivets, such as Figures 1 - 10 As shown, it includes a shell 1, a hatch 2, a mounting frame 3, a placement frame 4, a driving motor 5, a reciprocating screw rod 51, a fixing frame 52, a hot air blower 53, a stirring mechanism and a moving mechanism. An air outlet pipe is provided at the lower part of one side of the shell 1. The hatch 2 is clamped on the side of the shell 1 away from the air outlet pipe. Three mounting frames 3 are connected to the inner wall of the shell 1 through pins. The three mounting frames 3 are evenly spaced. A placement frame 4 is placed on each of the mounting frames 3. The placement frame 4 is made of aluminum alloy. The driving motor 5 is connected to the shell 1 away from the hatch by bolts. 2, the reciprocating screw rod 51 is bolted on the output shaft of the driving motor 5, the reciprocating screw rod 51 is horizontally arranged, the reciprocating screw rod 51 is rotatably connected to the outer shell 1, the fixed frame 52 is connected to the top side of the mounting frame 3 located above by a pin, the other end of the reciprocating screw rod 51 is rotatably connected to the fixed frame 52, the hot air blower 53 is bolted to the top of the outer shell 1, the air inlet of the hot air blower 53 is connected to the outer shell 1, a stirring mechanism is provided between the three mounting frames 3, and a moving mechanism is provided between the three mounting frames 3.

[0030] A handle is provided on the upper portion of the hatch 2.

[0031] The stirring mechanism includes a first moving rod 61, a sliding rod 62, a sliding carriage 63, stirring rods 64 and tension springs 65. A first moving rod 61 is slidably connected between one sides of the three mounting frames 3. The upper part of the first moving rod 61 is threadedly connected to the reciprocating lead screw 51. The first moving rod 61 is vertically arranged. A sliding rod 62 is slidably connected to one side of each mounting frame 3 away from the first moving rod 61. The three sliding rods 62 are all fixedly connected to the first moving rod 61. The sliding rod 62 is perpendicular to the first moving rod 61. A sliding carriage 63 is slidably connected to each sliding rod 62. A number of stirring rods 64 are sleeved on each sliding carriage 63. The number of stirring rods 64 is evenly spaced. Each stirring rod 64 contacts the placement frame 4. A tension spring 65 is connected between each stirring rod 64 and the sliding carriage 63. The tension spring 65 is sleeved on the stirring rod 64.

[0032] The moving mechanism includes a moving frame 71, a contact rod 72, an extension rod 73, a cam 74 and a return spring 75. A moving frame 71 is slidably connected between one sides of the three mounting frames 3 close to the drive motor 5. A contact rod 72 is welded to one side of each sliding carriage 63 close to the first moving rod 61. The contact rod 72 is vertically arranged. Three extension rods 73 are fixedly connected to the moving frame 71. The extension rod 73 is slidably connected to the mounting frame 3. The contact rod 72 contacts the extension rod 73. The cam 74 is bolted to one side of the reciprocating lead screw 51 close to the drive motor 5. The upper part of the moving frame 71 contacts the cam 74. A return spring 75 is connected between the sliding rod 62 and the sliding carriage 63.

[0033] At first, since the placement rack 4 holds several stirring rods 64, several tension springs 65 are in a compressed state. At the same time, since the cam 74 holds the moving rack 71, the return spring 75 is in a compressed state. In actual operation, the staff first opens the hatch 2, then takes out the three placement racks 4 respectively, then lays the blind rivets flat on the three placement racks 4 respectively, then sequentially places the placement racks 4 back on the mounting rack 3, then closes the hatch 2, and at the same time turns on the drive motor 5 and the hot air blower 53. The hot air blower 53 will introduce hot air into the interior of the housing 1 to heat and keep warm the blind rivets on the three placement racks 4. The air in the housing 1 will be discharged from the air outlet pipe to balance the pressure inside the housing 1. The rotation of the output shaft of the drive motor 5 will drive the reciprocating lead screw 51 to rotate. The rotation of the reciprocating lead screw 51 will drive the cam 74 to rotate. While the reciprocating lead screw 51 rotates, it will first drive the first moving rod 61 to move to the side away from the cam 74. The movement of the first moving rod 61 will drive the three sliding rods 62 to move together. The movement of the sliding rods 62 will drive the carriage 63 and the contact rod 72 to move together. The movement of the carriage 63 will drive several stirring rods 64 to move together. The movement of several stirring rods 64 will no longer be squeezed by the placement rack 4. The reset of the tension spring 65 will drive the stirring rod 64 to move downward. The downward movement of several stirring rods 64 will insert between several blind rivets on the placement rack 4. At the same time, the rotation of the cam 74 will no longer push the moving rack 71 first. The reset of the return spring 75 will drive the carriage 63 and several stirring rods 64 to move together to the side close to the reciprocating lead screw 51. The movement of the carriage 63 will drive the contact rod 72 to move. The movement of the contact rod 72 will push the extension rod 73 and the moving rack 71 to move together. The movement of several stirring rods 64 will stir several blind rivets on the placement rack 4. The continuous rotation of the cam 74 will push the moving rack 71 to move to the side away from the reciprocating lead screw 51. The movement of the moving rack 71 will drive the three extension rods 73 to move together. The movement of the extension rod 73 will push the contact rod 72 to move. The movement of the contact rod 72 will drive the carriage 63 and several stirring rods 64 to move together. Repeat this way, so that during the process of several stirring rods 64 moving to the side away from the drive motor 5, they move back and forth left and right and continuously stir several blind rivets on the placement rack 4, enabling the blind rivets to be heated comprehensively. When the first moving rod 61 moves to the end of the reciprocating lead screw 51, the continuous rotation of the reciprocating lead screw 51 will drive the first moving rod 61 to reset to the side close to the cam 74. The reset of the first moving rod 61 will drive the three sliding rods 62 to reset together. The reset of the sliding rods 62 will drive the carriage 63 and the contact rod 72 to reset together. The reset of the carriage 63 will drive several stirring rods 64 to reset together. The reset of several stirring rods 64 will be squeezed by the placement rack 4 and move upward, and the tension spring 65 is compressed. The continuous rotation of the reciprocating lead screw 51 will drive the first moving rod 61 to move to the side away from the cam 74. Repeat this way, thus driving the first moving rod 61 to move back and forth front and back, causing several stirring rods 64 to move back and forth front and back and stir several blind rivets on the placement rack 4.The blind rivets are fully turned over, so that all surfaces of the blind rivets can be evenly heated, enabling several blind rivets to be evenly heated up and heated, improving the heat treatment effect of the blind rivets, and thus improving the production quality of the blind rivets; after several blind rivets are heat-treated, the staff turns off the driving motor 5 and the hot air blower 53, then waits for several blind rivets to cool down, re-opens the hatch 2, takes out the blind rivets on the placement rack 4, and finally closes the hatch 2 again.

[0034] Embodiment 2: On the basis of Embodiment 1, as Figures 3 - 9 shown, it further includes a vibration mechanism. A vibration mechanism is provided on each of the sliding frames 63. The vibration mechanism includes a moving plate 81, a limiting frame 82, a guide rod 83, and a vibrating rod 84. A moving plate 81 is slidably connected to each of the sliding frames 63. A plurality of protrusions are provided on each of the moving plates 81. The top of each stirring rod 64 is in contact with the lower side of the moving plate 81. The top of one side of each mounting frame 3 away from the extension rod 73 is connected to a limiting frame 82 by a rivet. The limiting frame 82 is located above the moving plate 81. The top of one side of each sliding rod 62 close to the limiting frame 82 is fixedly connected to a guide rod 83. A vibrating rod 84 is slidably connected to each of the moving plates 81, and one end of the vibrating rod 84 is in contact with the top of the moving plate 81. The vibrating rod 84 is slidably connected to the guide rod 83.

[0035] When the sliding rod 62 moves away from the driving motor 5, it will drive the guide rod 83 and the vibration rod 84 to move together. When the carriage 63 moves away from the driving motor 5, it will drive the moving plate 81 to move. The movement of the moving plate 81 will contact the limiting frame 82 and be pushed by the limiting frame 82, causing the moving plate 81 to move downward, so that the moving plate 81 is always in contact with a plurality of stirring rods 64. The downward movement of the moving plate 81 will drive the vibration rod 84 to move downward. While the carriage 63 moves left and right reciprocally, it will drive the moving plate 81 to move left and right reciprocally. Since the guide rod 83 does not move left and right, the vibration rod 84 will not move left and right either. The left and right reciprocating movement of the moving plate 81 will cause a plurality of protrusions to continuously contact the vibration rod 84 and push the vibration rod 84, causing the vibration rod 84 to undergo slight deformation. When the protrusion of the moving plate 81 is disengaged from the vibration rod 84, the vibration rod 84 will rebound and strike the moving plate 81, causing the moving plate 81 to vibrate a plurality of stirring rods 64. Thus, when a plurality of stirring rods 64 stir a plurality of blind rivets on the placement rack 4, the plurality of stirring rods 64 are continuously vibrated, causing the plurality of stirring rods 64 to continuously vibrate the blind rivets, shaking off the impurities on the blind rivets, enabling the surface of the blind rivets to be heated and insulated sufficiently and evenly, avoiding the blind rivets from falling off or cracking due to improper heat treatment, and effectively reducing problems such as cracks on the surface of the blind rivets, thereby making the heat treatment effect of the blind rivets better and effectively improving the production quality of the blind rivets; when the sliding rod 62 resets, it will drive the guide rod 83 and the vibration rod 84 to reset together. When the carriage 63 resets, it will drive the moving plate 81 to reset. When the moving plate 81 resets, it will be disengaged from the limiting frame 82. When a plurality of stirring rods 64 reset upward, they will push the moving plate 81 and the vibration rod 84 to reset upward together.

[0036] Embodiment 3: On the basis of Embodiment 2, as Figures 3 - 9 shown, it further includes a swinging mechanism. A swinging mechanism is provided on each of the sliding rods 62. The swinging mechanism includes a limiting block 91, a second moving rod 92, a fixing plate 93, and a strong spring 94. Two limiting blocks 91 are bolted to each of the sliding rods 62. The two limiting blocks 91 form a group. A second moving rod 92 is slidably connected between the two limiting blocks 91 in each group. The second moving rod 92 is horizontally arranged. The second moving rod 92 contacts both sides of the placement rack 4. A fixing plate 93 is fixedly connected to the side of each sliding rod 62 away from the first moving rod 61. A strong spring 94 is connected between the second moving rod 92 and the fixing plate 93.

[0037] At first, both sides of the moving rod 92 are in contact with the placement rack 4. When the sliding rod 62 moves back and forth, it will drive the two limit blocks 91, the moving rod 92 and the fixed plate 93 to move back and forth together. When the slide 63 moves to the side away from the moving rod 1 61, it will contact the moving rod 92 and push the moving rod 92 to move. Since the placement rack 4 is made of aluminum alloy and has a light weight, and most of the blind rivets are also made of aluminum and have a light weight, the movement of the moving rod 92 will push the placement rack 4 to move, and the strong spring 94 will be compressed. When the slide 63 is reset, it will be out of contact with the moving rod 92, and the reset of the strong spring 94 will drive the moving rod 92 Reset, the reset of the moving rod 2 92 will push the placement rack 4 to reset, and repeat this process, so that the placement rack 4 will rock back and forth and shake the several blind rivets on it, so that the blind rivets can be evenly laid on the placement rack 4 after turning over, and continue to heat, so that the blind rivets can maintain a uniformly laid state during the turning process, so that hot air can pass more evenly between the blind rivets, heat and insulate the blind rivets, more effectively reduce the temperature difference between the blind rivets, and allow the blind rivets to heat up more quickly, which can greatly make the quality of the blind rivets after heat treatment consistent, and more effectively improve the production quality of the blind rivets.

[0038] Embodiment 4: Based on the embodiment 3, Figures 5 - 10 As shown, a toggle ring 10 is also included, and a toggle ring 10 is welded on each of the stirring rods 64 .

[0039] The stirring rod 64 reciprocates back and forth, and the toggle ring 10 reciprocates back and forth. The reciprocating movement of the toggle ring 10 further stirs the blind rivet. The stirring rod 64 reciprocates left and right, and the toggle ring 10 reciprocates left and right. The reciprocating movement of the toggle ring 10 flips the blind rivet more fully, so that the blind rivet is flipped more comprehensively and the heat treatment is also more comprehensive.

[0040] Embodiment 5: Based on Embodiment 4, Figures 3 - 8 As shown, a stopper 111 and a stopper rod 112 are also included. Each guide rod 83 is connected to the stopper 111 via a latch, and each vibration rod 84 is connected to the stopper rod 112 via a latch.

[0041] While the guide rod 83 reciprocates back and forth, it will drive the stop block 111 to reciprocate back and forth. While the vibration rod 84 reciprocates back and forth, it will drive the stop rod 112 to reciprocate back and forth. When the moving plate 81 moves towards the side away from the first moving rod 61, it will contact the stop block 111 and the stop rod 112 simultaneously. The stop block 111 and the stop rod 112 will vibrate the moving plate 81 simultaneously, thereby further vibrating a plurality of stirring rods 64, causing the plurality of stirring rods 64 to further vibrate a plurality of blind rivets, further shaking off the impurities on the blind rivets, and enabling the surface of the blind rivets to be heated and insulated more fully.

[0042] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A thermal aging furnace for the production of blind rivets, characterized in that: It includes a housing (1), a hatch door (2), a mounting frame (3), a placement rack (4), a driving motor (5), a reciprocating lead screw (51), a fixing frame (52), a hot air blower (53), a stirring mechanism and a moving mechanism. An air outlet pipe is provided at the lower part of one side of the housing (1). The hatch door (2) is clamped on the side of the housing (1) away from the air outlet pipe. Three mounting frames (3) are fixedly connected to the inner wall of the housing (1), and the three mounting frames (3) are arranged at equal intervals. A placement rack (4) is placed on each of the mounting frames (3). The placement rack (4) is made of aluminum alloy. The driving motor (5) is fixedly connected to the upper part of the side of the housing (1) away from the hatch door (2). The reciprocating lead screw (51) is fixedly connected to the output shaft of the driving motor (5). The reciprocating lead screw (51) is rotatably connected to the housing (1). The fixing frame (52) is fixedly connected to one side of the top of the upper mounting frame (3). The other end of the reciprocating lead screw (51) is rotatably connected to the fixing frame (52). The hot air blower (53) is fixedly connected to the top of the housing (1). The air inlet of the hot air blower (53) is communicated with the housing (1). A stirring mechanism is provided between the three mounting frames (3), and a moving mechanism is provided between the three mounting frames (3); A handle is provided on the upper part of the hatch door (2); The stirring mechanism includes a first moving rod (61), a sliding rod (62), a sliding frame (63), a stirring rod (64) and a tension spring (65). A first moving rod (61) is slidably connected between one sides of the three mounting frames (3). The upper part of the first moving rod (61) is threadedly connected to the reciprocating lead screw (51). A sliding rod (62) is slidably connected to the side of each mounting frame (3) away from the first moving rod (61). The three sliding rods (62) are all fixedly connected to the first moving rod (61). A sliding frame (63) is slidably connected to each sliding rod (62). A number of stirring rods (64) are sleeved on each sliding frame (63). The number of stirring rods (64) is arranged at equal intervals. Each stirring rod (64) contacts the placement rack (4). A tension spring (65) is connected between each stirring rod (64) and the sliding frame (63).

2. A thermal aging furnace for the production of blind rivets according to claim 1, characterized in that: The moving mechanism comprises a moving frame (71), a contact rod (72), an extension rod (73), a cam (74) and a return spring (75); the moving frame (71) is slidably connected between the three mounting frames (3) on one side close to the driving motor (5); each of the sliding frames (63) is fixedly connected to a contact rod (72) on one side close to the moving rod (61); three extension rods (73) are fixedly connected to the moving frame (71); the extension rods (73) are slidably connected to the mounting frame (3); the contact rod (72) contacts the extension rods (73); the cam (74) is fixedly connected to the side of the reciprocating screw rod (51) close to the driving motor (5); the upper part of the moving frame (71) contacts the cam (74); and a return spring (75) is connected between the sliding rod (62) and the sliding frame (63).

3. A heat aging furnace for producing blind rivets according to claim 2, Its characteristics are: The invention also comprises a vibration mechanism, wherein each of the slide frames (63) is provided with a vibration mechanism, wherein the vibration mechanism comprises a movable plate (81), a limiting frame (82), a guide rod (83) and a vibration rod (84), each of the slide frames (63) is slidably connected to the movable plate (81), each of the movable plates (81) is provided with a plurality of protrusions, the top of each of the stirring rods (64) contacts the lower side of the movable plate (81), the top of each of the mounting frames (3) away from the extension rod (73) is fixedly connected to the limiting frame (82), the limiting frame (82) is located above the movable plate (81), the top of each of the sliding rods (62) close to the limiting frame (82) is fixedly connected to the guide rod (83), each of the movable plates (81) is slidably connected to the vibration rod (84), one end of the vibration rod (84) contacts the top of the movable plate (81), and the vibration rod (84) is slidably connected to the guide rod (83).

4. A thermal aging furnace for producing blind rivets according to claim 2, Its characteristics are: The invention also includes a swing mechanism. Each of the sliding rods (62) is provided with a swing mechanism. The swing mechanism includes a limit block (91), a second moving rod (92), a fixed plate (93) and a strong spring (94). Each of the sliding rods (62) is fixedly connected to two limit blocks (91). The two limit blocks (91) form a group. A second moving rod (92) is slidably connected between the two limit blocks (91) in each group. The second moving rod (92) contacts both sides of the placement rack (4). The side of each sliding rod (62) away from the first moving rod (61) is fixedly connected to a fixed plate (93). A strong spring (94) is connected between the second moving rod (92) and the fixed plate (93).

5. A thermal aging furnace for producing blind rivets according to claim 3, Its characteristics are: It also includes a toggle ring (10), and each stirring rod (64) is fixedly connected to the toggle ring (10).

6. A thermal aging furnace for the production of blind rivets according to claim 3, characterized in that: it further comprises a stop block (111) and a stop rod (112), a stop block (111) is fixedly connected to each of the guide rods (83), and a stop rod (112) is fixedly connected to each of the vibrating rods (84).

Images