Tunnel furnace with jig capable of revolving and rotating
By designing a rotating fixture and support roller structure in the tunnel furnace, the problem of uneven heat receiving during heating of the fixing assembly is solved, and the uniform heating of the workpiece and the reliable combination of the fixing film is achieved, and the cost is reduced.
Patent Information
- Application Number
- CN202420019568.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-02
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-01-02
AI Technical Summary
When the existing tunnel furnace heats the fixing assembly, due to the single conveying method, the heat of the fixing film is uneven, which affects its binding effect with the body.
A tunnel furnace for rotating and rotating fixtures is designed. By setting a sprocket and chain on the bracket, the fixtures are driven and the support rollers are rotated to ensure that the workpiece can be heated evenly on all surfaces.
It realizes uniform heating and drying of the workpiece, improves the bonding effect between the fixing film and the body, has a simple and compact structure, is convenient to implement and is low in cost.
Smart Images
Figure CN222211207U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a tunnel furnace, in particular to a tunnel furnace with a fixture capable of orbital and rotational movement. Background Art
[0002] The fixing film is a special high-temperature resistant film used for fixing when copying or printing by a copier or printer. Fixing is the process of fixing the unstable and erasable toner image on the copy paper to the paper. Generally, the toner is melted after heating the fixing component, and then penetrates into the deep layer of the paper fiber, which is the effect of copying or printing.
[0003] The existing fixing assembly generally includes a stainless steel body, on which a fixing film is attached, and the fixing film needs to be heated and cured to be well combined with the body. To this end, the fixing assembly can be placed on a tunnel furnace and heated by the tunnel furnace to achieve this.
[0004] Existing tunnel furnaces usually use a single, fixed conveying method, such as linear conveying, etc. These technical solutions have certain limitations in certain application scenarios. For example, when heating and conveying the fixing component, if there is only linear conveying, considering that the heating pipes in the tunnel furnace are only arranged on the upper and lower sides of the conveyor belt, the heating of the fixing component is uneven, which affects the good combination of the fixing film on the body.
[0005] Therefore, it is necessary to improve and optimize the existing tunnel furnace. Utility Model Content
[0006] The utility model aims to solve at least one of the problems of the prior art. To this end, the utility model provides a tunnel furnace in which a jig can revolve and rotate. When the jig revolves, the support roller on the jig can rotate, thereby facilitating better and more uniform heating of the workpiece.
[0007] The technical solution adopted by the utility model to solve its technical problems is:
[0008] A tunnel furnace in which a jig can revolve and rotate, comprises a bracket, a first sprocket is arranged on the bracket, a first chain is arranged on the first sprocket, the first chain extends along the length direction of the tunnel furnace, a group of the first chain and the first sprocket are arranged on both sides of the bracket in the width direction, a plurality of jigs are arranged on the first chain, and the jigs are used to support a workpiece; the jig comprises a base plate, a first gear and a second gear are arranged on the base plate, wherein a second sprocket is coaxially arranged on the first gear, two second gears are arranged and driven by the first gear, and a supporting roller is coaxially arranged on the second gear; a second chain is also arranged on the bracket, the second chain is meshed with the second sprocket, and when the first sprocket drives the first chain to rotate, the jig on the first chain is driven to revolve; when the jig revolves, the second sprocket rolls on the second chain, thereby driving the supporting roller to rotate.
[0009] Optionally, the first sprocket is driven by a first motor; and a second motor is also included, the second motor drives the third sprocket to rotate, and the second chain is engaged with the third sprocket and can be driven by the third sprocket.
[0010] Optionally, an idler wheel is provided on the bracket, and both ends of the second chain are sleeved on the idler wheel.
[0011] Optionally, the tunnel furnace has a loading end and a unloading end, and a tensioning wheel is arranged on the bracket at the unloading end, and the tensioning wheel is arranged between the idle wheel and the third sprocket, and the bottom surface of the third sprocket is higher than the bottom surface of the idle wheel, so that the lower part of the second chain is inclined from high to low from the third sprocket to the idle wheel at the loading end.
[0012] Optionally, the second chain is arranged on one side of the bracket; a transmission roller is also arranged between two base plates arranged opposite to each other in the width direction of the bracket, and the transmission roller synchronously drives the first gears on the two base plates.
[0013] Optionally, a third gear is further provided on the substrate, the third gear is meshed with the first gear, and the transmission roller is coaxially arranged with the third gear and driven by the third gear.
[0014] Optionally, a connecting rod is further arranged between two substrate supports that are arranged opposite to each other in the width direction of the supports, one end of the connecting rod is connected and fixed to one of the substrates, and the other end of the connecting rod is connected and fixed to the other substrate.
[0015] Optionally, a fourth gear is provided on the substrate, and the fourth gear meshes with the first gear and the second gear.
[0016] Optionally, the first chain includes a chain plate, the chain plate is bent to form a flap, and the base plate is connected and fixed to the flap.
[0017] Optionally, a furnace cover is arranged on the bracket, a plurality of heating tubes are arranged in the furnace cover, and electrical connection joints of the heating tubes are arranged on the outside of the furnace cover.
[0018] The utility model has at least one of the following beneficial effects: the embodiment of the utility model arranges the jig on the first chain so that the jig can revolve with the first chain; a first gear and a second gear are arranged on the base plate of the jig, wherein a second sprocket is coaxially arranged on the first gear, two second gears are arranged and driven by the first gear, and a supporting roller is coaxially arranged on the second gear; a second chain is also arranged on the bracket, and the second chain is meshed with the second sprocket, so that when the jig revolves, the second sprocket rolls on the second chain, and the second sprocket drives the supporting roller to rotate through the gear set. Therefore, when the workpiece is supported on the supporting roller, the workpiece not only enters the tunnel furnace with the operation of the first chain, but also rotates driven by the supporting roller, so that all surfaces of the workpiece can be heated by the heating tube, and the heating and drying are more uniform. Taking the fixing film as an example, the fixing film is more reliably combined with the main body. The embodiment of the utility model has a simple and compact structure, is easy to implement, and has low cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the tunnel furnace in the embodiment of the utility model (the tunnel furnace can be made very long. In order to facilitate the placement of drawings and avoid too many lines, only part of the furnace cover and fixtures are drawn, and the chain is only partially illustrated);
[0020] Figure 1.1 yes Figure 1 A partial enlarged view of middle A;
[0021] Figure 1.2 yes Figure 1 A partial enlarged view of B in the middle;
[0022] Figure 2 It is a schematic diagram of the three-dimensional structure of the fixture in the embodiment of the utility model;
[0023] Figure 2.1 yes Figure 2 Schematic diagram of the three-dimensional structure after the shield is hidden;
[0024] Figure 2.2 yes Figure 2.1 A magnified view of the single-side fixture;
[0025] Figure 2.3 yes Figure 2.2 Orthographic projection diagram of ;
[0026] Figure 3 It is a three-dimensional structural schematic diagram of the first chain in the embodiment of the utility model;
[0027] Figure 4It is a three-dimensional structural schematic diagram of the tunnel furnace at the unloading end in the embodiment of the utility model (the motor and other structures are hidden);
[0028] Figure 4.1 yes Figure 4 Another angle diagram of the;
[0029] Figure 5 It is an orthographic projection schematic diagram of the first chain, the second chain, the idler wheel and other structures in the embodiment of the utility model;
[0030] Figure 5.1 yes Figure 5 A partial enlarged schematic diagram of the position of the middle tensioner;
[0031] Figure 6 It is a three-dimensional structural schematic diagram of the tunnel furnace at the loading end position in the embodiment of the utility model (the first chain, the second chain and other structures are hidden);
[0032] Figure 7 It is a three-dimensional structural schematic diagram of the positions of the first motor and the second motor in the embodiment of the utility model;
[0033] Figure 8 It is a three-dimensional structural schematic diagram of the furnace cover in the embodiment of the utility model;
[0034] Figure 8.1 yes Figure 8 Another angle diagram of the;
[0035] Fig. 9 It is a schematic diagram of the three-dimensional structure of the workpiece.
[0036] Explanation of the accompanying drawings: 1- bracket, 21- first sprocket, 22- first chain, 23- first motor, 24- chain plate, 25- flap, 31- base plate, 32- first gear, 33- second gear, 34- second sprocket, 35- fourth gear, 36- support roller, 37- transmission roller, 38- third gear, 39- connecting rod, 30- guard cover, 4- second chain, 41- second motor, 42- third sprocket, 43- idler, 44- tensioning wheel, 5- furnace cover, 51- heating tube, 52- electrical connection joint, 6- workpiece. DETAILED DESCRIPTION
[0037] In order to make the purpose, technical solution and advantages of the utility model more clear, the embodiments of the utility model will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features in the embodiments described below can be combined with each other arbitrarily without conflict.
[0038] Many different implementations or examples are provided below to implement the structure of the present utility model.
[0039] See also Figure 1-Figure 8.1 As shown, the embodiment of the utility model discloses a tunnel furnace in which a fixture can revolve and rotate, including a bracket 1, a first sprocket 21 is arranged on the bracket 1, a first chain 22 is arranged on the first sprocket 21, the first chain 22 extends along the length direction of the tunnel furnace, and the first chain 22 and the first sprocket 21 are arranged in a group on both sides of the bracket in the width direction, and a plurality of fixtures are arranged on the first chain 22, and the fixture is used to support a workpiece 6 (the workpiece is as shown in FIG. Fig. 9 The fixture includes a base plate 31, on which a first gear 32 and a second gear 33 are arranged, wherein a second sprocket 34 is coaxially arranged on the first gear 32, two second gears 33 are arranged, and are driven by the first gear 32, and the second gear 33 can be directly meshed and driven by the first gear 32. In this embodiment, a fourth gear 35 is arranged on the base plate 31, and the fourth gear 35 meshes with the first gear 32 and the second gear 33, that is, the first gear 32 drives the first gear 32 to rotate through the fourth gear 35, so as to meet the requirements of space arrangement and transmission ratio. Request; A support roller 36 is coaxially arranged on the second gear 33, and the workpiece is supported by the support roller 36. Specifically, the spacing between the two support rollers 36 on the same substrate 31 is smaller than the radial dimension of the support shaft at the end of the workpiece, so that one end of the workpiece is supported by the two support rollers 36; A second chain 4 is also arranged on the bracket 1, and the second chain 4 is meshed with the second sprocket 34. When the first sprocket 21 drives the first chain 22 to rotate, the fixture on the first chain 22 is driven to revolve; when the fixture revolves, the second sprocket 34 rolls on the second chain 4, thereby driving the support roller 36 to rotate.
[0040] Considering that when the jig revolves with the first chain 22, although the second sprocket 34 rolls on the second chain 4 to make the support roller 36 rotate, the rotation speed of the support roller 36 may not meet the requirements of the workpiece rotation, and the rotation speeds required by different workpieces may not be the same. For this reason, please refer to Figure 1.2 , Figure 4 , Figure 4.1 and Figure 7As shown, in some embodiments of the utility model, the first sprocket 21 is driven by the first motor 23. Specifically, the first motor 23 is connected to the reducer through a chain, and the reducer is connected to the first sprocket 21 through a chain, so that the first motor 23 drives the first sprocket 21; it also includes a second motor 41, and the second motor 41 drives the third sprocket 42 to rotate, which can be directly driven or indirectly driven; the third sprocket 42 is arranged on the bracket 1, and the second chain 4 is meshed with the third sprocket 42 and can be driven by the third sprocket 42. Therefore, the second motor 41 cooperates with the third sprocket 42 to drive the rotation of the second chain 4 independently of the first motor 23, and the rotation of the second chain 4 will change the rotation speed of the second sprocket 34 on the fixture, thereby realizing the adjustment of the rotation speed of the support roller 36, so as to better meet the requirements of the rotation of the workpiece, and the rotation of the support roller realizes independent power, is not affected by the first chain, and is simple to adjust the speed, improves the flexibility and adaptability of the conveying, and can adapt to different application scenarios and needs.
[0041] In order to avoid the second sprocket 34 from biting interference, in some embodiments of the present invention, see Figure 1.1 , Figure 4-Figure 6 As shown, the bracket 1 is provided with an idler wheel 43, and the two ends of the second chain 4 are sleeved on the idler wheel 43. If the idler wheel is replaced with a large sprocket, when the second sprocket 34 moves to the idler position, the teeth on the second sprocket 34 and the large sprocket will interfere with each other, which will damage the sprocket in the long run and reduce the service life of the tunnel furnace.
[0042] The tunnel furnace has a loading end and a unloading end. Figure 1 As shown, the right side is the loading end, where workers place the workpieces on the fixture, and the left side is the unloading end, where the workpieces have been dried and cooled in the tunnel furnace and will be removed. Figure 4-Figure 5.1As shown, in some embodiments of the utility model, a tensioning wheel 44 is provided on the bracket 1 at the unloading end. In this embodiment, the tensioning wheel 44 is a sprocket, and the tensioning wheel 44 is arranged between the idler wheel 43 and the third sprocket 42. The bottom surface of the third sprocket 42 is higher than the bottom surface of the idler wheel 43, so that the lower part of the second chain 4 is inclined from high to low from the third sprocket 42 to the idler wheel 43 at the feeding end. First, although the tensioning wheel 44 is a sprocket, it is set at a higher position for tensioning purposes, and the second sprocket 34 will not have tooth interference with the tensioning wheel; secondly, since the bottom surface of the third sprocket 42 is higher than the bottom surface of the idler wheel 43, the second sprocket 34 will not have tooth interference with the third sprocket 42. In fact, due to the ingenious design of the above structures of the tensioning wheel 44 and the third sprocket 42, when the jig rotates from the unloading end through the idler wheel 43 (at this time, the jig is inverted and there is no workpiece on the jig), the second sprocket 34 on the jig does not mesh with the second chain 4 , since the lower part of the second chain 4 is tilted from high to low from the third sprocket 42 to the idler wheel 43 at the feeding end, the second sprocket 34 on the jig will gradually mesh with the second chain 4 as the first chain 22 moves from the unloading end to the upper feeding end. When the jig moves to the upper part after turning through the idler wheel 43 at the feeding end, the second sprocket 34 on the jig is in meshing with the second chain 4. When the jig carries the workpiece and moves from the feeding end to the lower feeding end, the second sprocket 34 and the second chain 4 are in a meshing state to ensure that the second sprocket 34 can be driven to rotate. It can be seen that the ingenious structure of the present embodiment completely solves the problem of sprocket tooth interference, ensures the long service life of components such as sprockets, and reduces the maintenance and use costs of users. It can be understood that the second motor 41 can drive the second chain 4 to rotate by driving the tensioning wheel, thereby realizing indirect driving of the third sprocket 43.
[0043] See Figure 2.1 , Figure 4-Figure 4.1 As shown, in some embodiments of the present invention, the second chain 4 is disposed on one side of the bracket 1, that is, there is only one second chain 4, and there are two first chains 22; see Figure 2-Figure 2.3 As shown, a transmission roller 37 is also provided between two base plates 31 arranged opposite to each other in the width direction of the bracket 1, and the transmission roller 37 synchronously transmits the first gears 32 on the two base plates 31. Specifically, in this embodiment, a third gear 38 is also provided on the base plate 31, and the third gear 38 is meshed with the first gear 32. The transmission roller 37 is coaxially arranged with the third gear 38 and driven by the third gear 38, that is, the above structure can realize the synchronous rotation of the support rollers 36 on the two base plates 31 arranged opposite to each other through the transmission roller 37, so that the two ends of the workpiece rotate at the same speed, thereby, the second chain 4 only needs to be arranged on one side, and does not need to be arranged on both sides, which will greatly reduce the production cost and use cost of the tunnel furnace.
[0044] See Figure 1.1 , Figure 2 , Figure 2.1 As shown, in some embodiments of the present invention, a connecting rod 39 is further arranged between two substrate supports arranged opposite to each other in the width direction of the supports, one end of the connecting rod 39 is connected and fixed to one of the substrates, and the other end is connected and fixed to the other substrate. Thus, the structural strength and the orbital synchronization of the two relatively arranged jigs can be improved.
[0045] As for the connection and fixation between the fixture and the first chain 22, in some embodiments of the present invention, the first chain 22 includes a chain plate 24, the chain plate 24 is bent to form a flap 25, and the base plate 31 is fixed to the flap 25 by screw connection.
[0046] In order to protect the gear set and other components on the fixture, a shield 30 can be set on the fixture, and the gears and other components are set in the shield 30. This structure also improves safety. Figure 2 shown.
[0047] See Figure 8 , Figure 8.1 As shown, in some embodiments of the utility model, a furnace cover 5 is arranged on the bracket 1, and a plurality of heating tubes 51 are arranged in the furnace cover 5, and the electrical connection joints 52 of the heating tubes 51 are arranged on the outside of the furnace cover 5. Compared with the structure in the prior art in which the electrical connection joints are arranged on the inside of the furnace cover, the structure shown in this embodiment is easier to connect external wires, and the wires are not easily affected by high temperature and prematurely aged, etc., and it is also convenient to connect the wires, etc.; and when the heating tube is damaged and needs to be repaired or replaced, the structure in which the electrical connection joints 52 are arranged on the outside of the furnace cover 5 also facilitates the repair and replacement of the heating tube.
[0048] The embodiments of the utility model are described in detail above in conjunction with the accompanying drawings, but the utility model is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the utility model.
Claims
1. A tunnel furnace with a fixture capable of revolution and rotation, characterized in that: It includes a bracket, a first sprocket is arranged on the bracket, a first chain is arranged on the first sprocket, the first chain extends along the length direction of the tunnel furnace, a group of the first chain and the first sprocket are arranged on both sides of the bracket in the width direction, a plurality of jigs are arranged on the first chain, and the jigs are used to support the workpiece; the jig includes a base plate, a first gear and a second gear are arranged on the base plate, wherein a second sprocket is coaxially arranged on the first gear, two second gears are arranged and driven by the first gear, and a supporting roller is coaxially arranged on the second gear; a second chain is also arranged on the bracket, the second chain is meshed with the second sprocket, when the first sprocket drives the first chain to rotate, the jig on the first chain is driven to revolve; when the jig revolves, the second sprocket rolls on the second chain, thereby driving the supporting roller to rotate.
2. The tunnel furnace with a fixture capable of revolution and rotation according to claim 1, characterized in that: The first sprocket is driven by a first motor; a second motor is also included, the second motor drives the third sprocket to rotate, the second chain is meshed with the third sprocket and can be driven by the third sprocket.
3. The tunnel furnace with a jig capable of revolution and rotation according to claim 2, characterized in that: An idler wheel is arranged on the bracket, and two ends of the second chain are sleeved on the idler wheel.
4. The tunnel furnace with a fixture capable of revolution and rotation according to claim 3, characterized in that: The tunnel furnace has a loading end and a unloading end. A tensioning wheel is arranged on the bracket at the unloading end. The tensioning wheel is arranged between the idle wheel and the third sprocket. The bottom surface of the third sprocket is higher than the bottom surface of the idle wheel, so that the lower part of the second chain is inclined from high to low from the third sprocket to the idle wheel at the loading end.
5. A tunnel furnace with a fixture capable of revolution and rotation according to any one of claims 1 to 4, characterized in that: The second chain is arranged on one side of the bracket; a transmission roller is also arranged between two base plates arranged opposite to each other in the width direction of the bracket, and the transmission roller synchronously transmits the first gears on the two base plates.
6. The tunnel furnace with a jig capable of revolution and rotation according to claim 5, characterized in that: A third gear is also arranged on the base plate, and the third gear is meshed with the first gear. The transmission roller is coaxially arranged with the third gear and is driven by the third gear.
7. The tunnel furnace with a fixture capable of revolution and rotation according to claim 5, characterized in that: A connecting rod is also arranged between two substrate supports that are arranged opposite to each other in the width direction of the supports. One end of the connecting rod is connected and fixed to one of the substrates, and the other end of the connecting rod is connected and fixed to the other substrate.
8. The tunnel furnace with a fixture capable of revolution and rotation according to claim 6, characterized in that: A fourth gear is disposed on the substrate, and the fourth gear is meshed with the first gear and the second gear.
9. The tunnel furnace with a fixture capable of revolution and rotation according to claim 1, characterized in that: The first chain includes a chain plate, the chain plate is bent to form a flap, and the base plate is connected and fixed to the flap.
10. The tunnel furnace with a fixture capable of revolution and rotation according to claim 1, characterized in that: A furnace cover is arranged on the bracket, a plurality of heating tubes are arranged in the furnace cover, and electrical connection joints of the heating tubes are arranged on the outside of the furnace cover.