Automatic baking equipment for baking hollow cup motor rotor

Abstract

The invention discloses automatic baking equipment for baking a hollow cup motor rotor, which comprises a heat insulation shell, an electric heating device and a carrier conveying mechanism, and is characterized in that the electric heating device is mounted on the heat insulation shell and comprises an electric heating pipe positioned in the heat insulation shell; the carrier conveying mechanism comprises a motor and a chain plate type conveying belt, the motor is installed on the heat insulation shell, the chain plate type conveying belt is movably installed on the heat insulation shell and located in the heat insulation shell, and the chain plate type conveying belt comprises a chain and a plurality of chain plates installed on the chain. The motor is connected with the chain through a gear transmission mechanism and used for driving the chain plate type conveying belt to move. According to the invention, the carrier can enter and exit from the chain through the carrier access channel, so that the electric heating device can bake the coreless motor rotor carried on the carrier conveyed on the chain, automatic feeding is realized, and the production efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the field of coreless cup motor rotor processing equipment, and more specifically, relates to an automatic baking device for baking a coreless cup motor rotor. Background Art

[0002] With the development of science and technology and the increase in labor costs, production automation has become more and more in line with the current situation. Replacing manual production with fully automatic production lines has become the choice of more and more manufacturing companies.

[0003] Hollow cup motors are widely used in military, aerospace, civil appliances, industrial products and other fields because of their outstanding features such as high energy conversion efficiency, rapid starting and braking, stable and reliable operation, and small speed fluctuation.

[0004] The conventional structure of the coreless rotor includes a wire cup, a rotor frame, a rotor shaft and a commutator. The rotor frame is fixedly mounted on the rotor shaft, the commutator is mounted on the rotor frame, the wire cup is sleeved around the rotor frame, and the wire ends on the wire cup are welded to the commutator segments of the commutator.

[0005] In the prior art, before welding the coreless motor rotor, it is necessary to perform multiple glue dispensing operations on the coreless motor rotor to allow the various parts of the coreless motor rotor to stick together first, which is convenient for welding. Gluing is also required after welding to better fix the welded parts together. At present, the coreless motor rotor is generally placed on the tooling and the glue is allowed to dry naturally, which makes the production efficiency low. Moreover, after a long time, the wire cup on the rotor frame is also easy to fall down and shift under its own weight, affecting the subsequent welding of the wire end of the wire cup on the commutator. If the carrier is placed in an oven for drying, the carrier needs to be manually placed in the oven and taken out after the set drying time. This manual operation is inefficient. Moreover, since the volume of the coreless motor rotor is generally small, a small oven is generally used. Only a small amount of coreless motor rotors can be dried at a time, which also makes the production efficiency low. Summary of the invention

[0006] In response to the above defects or improvement needs of the prior art, the present invention provides an automatic baking equipment for baking hollow cup motor rotors, which can allow the carrier to enter and exit the chain through the carrier entry and exit channel, so that the electric heating device can bake the hollow cup motor rotor carried by the carrier transported on the chain, automatically feed the material, and improve production efficiency.

[0007] To achieve the above object, according to one aspect of the present invention, an automatic baking device for baking a coreless motor rotor is provided, characterized in that it comprises a heat-insulating housing, an electric heating device and a carrier conveying mechanism, wherein:

[0008] The electric heating device is mounted on the heat-insulating shell, and the electric heating device comprises an electric heating tube located inside the heat-insulating shell;

[0009] The carrier conveying mechanism includes a first motor and a chain-plate conveyor belt, wherein the first motor is mounted on the heat-insulating shell, the chain-plate conveyor belt is movably mounted on the heat-insulating shell and is located inside the heat-insulating shell, the chain-plate conveyor belt includes a chain and a plurality of chain plates mounted on the chain, the chain is arranged horizontally, and the first motor is connected to the chain through a gear transmission mechanism to drive the chain-plate conveyor belt to move and transport the carrier equipped with the hollow cup motor rotor.

[0010] Preferably, the electric heating device further comprises a second motor, a wind wheel and a mounting frame, wherein:

[0011] The motor housing of the second motor is located outside the heat-insulating housing, and the motor housing of the second motor is fixedly mounted on the heat-insulating housing;

[0012] The output shaft of the second motor is connected to a heat-insulating sleeve, the heat-insulating sleeve is rotatably mounted on the heat-insulating shell, the heat-insulating sleeve extends into the heat-insulating shell and is connected to the wind wheel, and a gap is left between the wind wheel and the heat-insulating shell;

[0013] The mounting frame is mounted on the inner wall of the heat-insulating shell, and the electric heating tube is fixedly mounted on the mounting frame. The electric heating tube is a serpentine tube, and electric wires are connected to the electric heating tube. The electric wires pass through the heat-insulating shell and are sealed to the heat-insulating shell.

[0014] Preferably, two electric heating tubes are arranged, and the wind wheel is located between the two electric heating tubes.

[0015] Preferably, the carrier conveying mechanism further comprises a carrier access seat and a gear transmission mechanism, wherein:

[0016] The first motor is mounted on the heat-insulating housing, and a motor housing of the first motor is located outside the heat-insulating housing. The first motor is connected to the chain through the gear transmission mechanism to drive the chain to move;

[0017] There are two carrier access seats, each of which is installed on the side wall of the heat-insulating shell, each of which is provided with a carrier access channel, and each of which is located above the chain plate conveyor belt;

[0018] Each of the vehicle access channels is arc-shaped to guide the movement of the vehicle;

[0019] One end of each of the carrier entrance and exit channels is close to the chain-plate conveyor belt and the other end is away from the chain-plate conveyor belt. A slideway for receiving the carrier is arranged at the end of each of the carrier entrance and exit channels away from the chain-plate conveyor belt so that the carrier can slide on the slideway. The end of each of the carrier entrance and exit channels close to the chain-plate conveyor belt is penetrated from top to bottom so that the carrier can slide onto the chain-plate conveyor belt through the slideway of one of the carrier entrance and exit channels for transportation, and the carrier transported on the chain-plate conveyor belt can leave the chain through the slideway of another of the carrier entrance and exit channels.

[0020] Preferably, the chain has a serpentine section, a rounded transition section and a straight connecting section, and the straight connecting section is connected to each end of the serpentine section via one of the rounded transition sections.

[0021] Preferably, the gear transmission mechanism includes a driving gear, a rotating shaft, a driven gear and a transmission gear, the driving gear is mounted on the output shaft of the first motor, the driven gear is meshed with the driving gear, the driven gear is mounted on the rotating shaft, the rotating shaft is vertically arranged and rotatably mounted on the heat insulating shell, the transmission gear is fixedly mounted on the rotating shaft, and the transmission gear is meshed with one of the circular arc transition sections of the chain.

[0022] Preferably, it also includes a passive gear rotatably mounted on the heat-insulating shell and meshing with another of the circular arc transition sections.

[0023] Preferably, it also includes a chain tensioning mechanism, which includes a base, a moving block, a cushion block, a chain adjusting wheel and an adjusting bolt, wherein:

[0024] A horizontal slide groove is arranged on the base, and a connecting block is arranged at the bottom of the base;

[0025] The moving block is T-shaped as a whole, and has a first part and a second part that are integrally formed. The first part of the moving block is placed on the top of the base, and the second part of the moving block extends into the slide groove of the base so as to slide along the slide groove. A moving rod is provided at the bottom of the moving block.

[0026] The cushion block is mounted on the first portion of the moving block;

[0027] The chain adjusting wheel is mounted on the top of the cushion block, and the chain adjusting wheel has outer teeth evenly arranged in the circumference so as to be inserted into the gap of the chain;

[0028] The adjusting bolt includes an integrally formed bolt head and a bolt rod, the bolt rod includes a threaded portion and a cylindrical portion, and the thread of the threaded portion protrudes relative to the cylindrical portion, the threaded portion is threadedly connected to the connecting block, and the cylindrical surface of the cylindrical portion abuts against the moving rod.

[0029] Preferably, the heat-insulating shell includes three shells connected in sequence from top to bottom, namely a top shell, a middle shell and a bottom shell;

[0030] Each shell includes an inner insulation layer, a middle insulation layer and an outer insulation layer arranged from the inside to the outside, and the inner insulation layer and the outer insulation layer are fixedly connected so that the inner insulation layer and the outer insulation layer cooperate to wrap the middle insulation layer.

[0031] Preferably, it also includes a temperature sensor arranged in the heat-insulating shell.

[0032] In general, the above technical solutions conceived by the present invention can achieve the following beneficial effects compared with the prior art:

[0033] 1) The automatic baking equipment for baking the coreless motor rotor of the present invention can transport the carrier through the carrier conveying mechanism in the heat-insulating shell, and heat and cure the glue on the coreless motor rotor carried by the carrier through the electric heating device, thereby improving production efficiency.

[0034] 2) The present invention is an automatic baking device for baking a coreless motor rotor. The electric heating tube can be electrically heated, and the second motor drives the wind wheel to rotate in the heat-insulating shell, so that the temperature in the heat-insulating shell is more evenly distributed, which is convenient for drying the glue on the coreless motor rotor, thereby improving the production efficiency of the coreless motor rotor.

[0035] 3) The present invention is an automatic baking device for baking hollow cup motor rotors. The carrier can enter and exit the heat-insulating shell from the carrier access channel of the carrier access seat. After entering the heat-insulating shell from a carrier access channel, it can be transported on a chain plate conveyor belt. It can be baked in the heat-insulating shell while being transported, so that the glue on the carrier can be dried, and then it can exit the heat-insulating shell from another carrier access channel, thereby completing the automatic transportation and drying of the carrier, greatly improving production efficiency.

[0036] 4) The automatic baking equipment for baking the coreless cup motor rotor of the present invention can move the moving rod by twisting the adjusting bolt of the chain tensioning mechanism, and the moving rod can drive the moving block to slide along the slide groove, so that the position of the chain adjusting wheel can be adjusted, so that the chain adjusting chain is pressed on the chain, which can prevent the chain from becoming loose and affecting the normal transportation of the coreless cup motor rotor on the chain. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the structure of the present invention;

[0038] Figure 2 It is a schematic diagram of the present invention after a part of the heat insulation shell is removed;

[0039] Figure 3 is a schematic diagram of the electric heating device of the present invention being installed on the top shell;

[0040] Figure 4 is a cross-sectional view of the carrier conveying mechanism of the present invention;

[0041] Figure 5 It is a structural schematic diagram of the present invention from another perspective;

[0042] Figure 6 It is a schematic diagram of the chain tensioning mechanism of the present invention.

[0043] Figure 7 It is a schematic diagram of the structure of the present invention from another viewing angle;

[0044] Figure 8 It is a schematic diagram of the present invention after the bottom shell is removed. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0046] Reference Figures 1 to 8 , an automatic baking device for baking a coreless motor rotor, comprising a heat-insulating housing, an electric heating device and a carrier conveying mechanism, wherein:

[0047] The electric heating device is mounted on the heat-insulating shell, and includes an electric heating tube 18 located inside the heat-insulating shell; a through hole 44 is provided on the heat-insulating shell, which is an outlet for electric wires for energizing the electric heating tube 18 .

[0048] The carrier conveying mechanism includes a first motor 1 and a chain plate conveyor belt 15, wherein the first motor 1 is mounted on the heat-insulating shell, the chain plate conveyor belt 15 is movably mounted on the heat-insulating shell and is located inside the heat-insulating shell, the chain plate conveyor belt 15 includes a chain 38 and a plurality of chain plates 22 mounted on the chain 38, the chain 38 is arranged horizontally, and the first motor 1 is connected to the chain 38 through a gear transmission mechanism to drive the chain plate conveyor belt 15 to move to transport the carrier equipped with the hollow cup motor rotor.

[0049] The heat-insulating housing preferably includes three shells connected in sequence from top to bottom, namely a top shell, a middle shell and a bottom shell, and the three shells are assembled together.

[0050] Each shell includes an inner insulation layer, a middle insulation layer and an outer insulation layer arranged from the inside to the outside, and the inner insulation layer and the outer insulation layer are fixedly connected so that the inner insulation layer and the outer insulation layer cooperate to wrap the middle insulation layer.

[0051] The electric heating device is preferably mounted on the top shell of the heat-insulating housing, and the electric heating device further comprises a second motor 10, a wind wheel 17 and a mounting frame 29, wherein:

[0052] The top shell includes an inner insulation layer 28, a middle insulation layer and an outer insulation layer 9 arranged from the inside to the outside. The inner insulation layer 28 and the outer insulation layer 9 are fixedly connected, so that the inner insulation layer 28 and the outer insulation layer 9 cooperate to wrap the middle insulation layer; in order to reduce the transfer and dissipation of heat, the outer insulation layer 9 and the inner insulation layer 28 are preferably made of metal materials and fixed by welding, so that the middle insulation layer is sealed in the space between the outer insulation layer 9 and the inner insulation layer 28, so that the outer insulation layer 9 and the inner insulation layer 28 wrap the middle insulation layer as a whole. The middle insulation layer is preferably made of insulation cotton. The insulation cotton has the characteristics of high temperature resistance, non-flammability, low thermal conductivity, and good insulation effect. A plurality of handles 26 are arranged on the outer insulation layer 9 of the top shell, and the handles 26 are convenient for moving the top shell of the insulation shell as a whole.

[0053] The motor housing of the second motor 10 is located outside the outer heat insulation layer 9, and the motor housing of the second motor 10 is fixedly mounted on the outer heat insulation layer 9. A flange 16 is preferably fixed on the outer heat insulation layer 9, and the flange 16 is located outside the outer heat insulation layer 9, and the motor housing of the second motor 10 is mounted on the outer heat insulation layer 9 through the flange 16. The flange 16 can also play a certain heat insulation effect.

[0054] The output shaft of the second motor 10 is connected to the heat-insulating sleeve, which is rotatably mounted on the heat-insulating outer shell, and the heat-insulating sleeve extends into the heat-insulating outer shell and is connected to the wind wheel 17. A gap is left between the wind wheel 17 and the inner heat-insulating layer 28, and the two are not in contact, and the inner heat-insulating layer 28 will not affect the normal rotation of the wind wheel 17. The wind wheel 17 can circulate the heat in the oven to keep the temperature in the oven within ±10°C of the set value.

[0055] The mounting frame 29 is mounted on the inner wall of the insulating inner layer of the top shell of the insulating shell. The mounting frame 29 is preferably fixedly mounted on the insulating inner layer by screws, and the electric heating tube 18 is fixedly mounted on the mounting frame 29. The electric heating tube 18 is a serpentine tube. The electric heating tube 18 is connected with an electric wire, and the electric wire passes through the insulating shell and is sealed and connected to the insulating shell. The insulating shell is provided with an electric wire outlet for energizing the electric heating tube 18. The electric heating tube 18 is energized and heated by the electric wire, thereby heating the air inside the insulating shell. If a conveyor belt is set in the insulating shell, the rotor of the hollow cup second motor 10 carried by the carrier can be baked in the insulating shell during the process of the conveyor belt transporting the carrier. The electric heating tube 18 is preferably fixed to the mounting frame 29 by a pipe clamp, so as to facilitate the disassembly and assembly of the electric heating tube 18.

[0056] Furthermore, two electric heating tubes 18 are arranged, and the wind wheel 17 is located between the two electric heating tubes 18. The electric heating tubes 18 are heated symmetrically, so that the temperature can be quickly raised to the set temperature, and combined with the wind wheel 17 between the two, the air temperature in the heat-insulating housing can be distributed more evenly.

[0057] Furthermore, the top shell of the heat-insulating shell is a cover body with an open lower end, and the open end of the top shell of the heat-insulating shell can cover the middle shell below it, the middle shell is a shell that penetrates from top to bottom, and the lower shell is a shell with an open upper end. The top shell, the middle shell and the bottom shell are assembled together to form a heat-insulating shell with a relatively large internal space, and a conveyor chain or the like can be installed in this large heat-insulating shell to transport the carrier.

[0058] Furthermore, the heat insulating shell is a rectangular parallelepiped structure as a whole, and limit blocks 25 are respectively installed at the four corners of the outer side of the top shell of the heat insulating shell, and the bottom surfaces of these limit blocks 25 are on the same plane, which is convenient for placing the top shell on the middle shell.

[0059] When the electric heating device is working, the two electric heating tubes 18 can generate heat at the same time to heat the air in the inner cavity of the heat-insulating shell. At the same time, the wind wheel 17 rotates to allow the air in the inner cavity of the heat-insulating shell to flow and the temperature distribution to be more uniform. In this way, when the conveyor chain transports the carrier and the hollow cup second motor 10 rotor on the carrier, the heating temperature of the hollow cup second motor 10 rotor can be consistent, which helps to unify the heating time of the hollow cup second motor 10 rotor, so that the glue on a batch of hollow cup second motor 10 rotors can be cured in the same way after being heated by the electric heating device.

[0060] The carrier conveying mechanism is preferably mounted on the bottom shell of the heat-insulating housing, the middle shell surrounds the carrier conveying mechanism, and the carrier conveying mechanism also includes a carrier entry and exit seat and a gear transmission mechanism, wherein:

[0061] The chain plate conveyor belt 15 is located inside the heat-insulating shell and includes a chain 38 and a chain plate 22. The chain 38 is movably mounted on the heat-insulating shell, and the chain plate 22 is mounted on the chain 38. A plurality of chain plates 22 are fixedly mounted on the chain 38. The chain plates 22 are used to keep the chain plate conveyor belt 15 flat so that when the chain plate conveyor belt 15 is running, the carrier will not be violently shaken and cause the hollow cup motor rotor to be baked to fall from the carrier.

[0062] The first motor 1 is preferably mounted on the bottom shell of the thermal insulation shell, and the first motor shell of the first motor 1 is located outside the bottom shell of the thermal insulation shell, and the first motor 1 is connected to the chain 38 through the gear transmission mechanism to drive the chain 38 to move; the first motor 1 is preferably a deceleration first motor 1, and the first motor 1 is installed with an encoder 2 for obtaining the rotational speed of the first motor 1.

[0063] There are two carrier access seats, each of which is installed on the side wall of the heat-insulating shell, preferably on the side wall of the middle shell, and each of which is provided with a carrier access channel, and each of which is located above the chain plate conveyor belt 15; if a carrier enters the heat-insulating shell from one of the carrier access channels, it will exit the heat-insulating shell from the other carrier access channel. The two carrier access channels are the first carrier access channel and the second carrier access channel.

[0064] Each of the carrier access channels is arc-shaped to guide the movement of the carrier. The carrier moves along the arc-shaped carrier access channel to the chain 38 and leaves from the chain 38.

[0065] One end of each of the carrier entrance and exit channels is close to the chain-plate conveyor belt 15 and the other end is away from the chain-plate conveyor belt 15. A slideway 45 for receiving the carrier is arranged at the end of each of the carrier entrance and exit channels away from the chain-plate conveyor belt 15 so that the carrier can slide on the slideway 45. The slideway 45 is relatively smooth and needs to facilitate the carrier to slide up and down; the end of each of the carrier entrance and exit channels close to the chain-plate conveyor belt 15 is penetrated from top to bottom so that the carrier can slide onto the chain-plate conveyor belt 15 for transportation through the slideway 45 of one of the carrier entrance and exit channels, and the carrier transported on the chain-plate conveyor belt 15 can leave the chain 38 through the slideway 45 of another of the carrier entrance and exit channels. Therefore, the arc-shaped carrier access channel has two arc-shaped inner side walls for guidance, and a part of the bottom wall has a slide 45 to receive the carrier, and a part close to the chain plate conveyor belt 15 is empty and through-through, and the inner side wall extends to the through-through part for guidance, so as to facilitate the movement of the carrier onto the chain plate conveyor belt 15. There can be at most two carriers in each carrier access channel at a time, one of which is on the slide 45 of the carrier access channel, and the other is on the through-through part of the carrier access channel (the carrier at the through-through part has also fallen onto the chain plate conveyor belt 15), so that it is convenient to squeeze the carriers one by one onto the chain plate conveyor belt 15, or squeeze out of the slide of the carrier access channel to be transported away.

[0066] Before entering the heat-insulating housing, a carrier carrying a coreless motor rotor can be placed on an external track, and the carrier on the external track can be pushed onto one of the slideways 45 by an external material-pushing device, wherein the material-pushing device includes a two-dimensional motion platform and a material-pushing hand driven by the two-dimensional motion platform, and the two-dimensional motion platform drives the material-pushing hand to move horizontally to push the frontmost carrier on the external track onto one of the slideways 45; thereafter, the material-pushing hand pushes another carrier on the external track onto the slideway 45, thereby squeezing the previous carrier on the slideway 45 to the vertically connected part of the carrier access channel, which corresponds to the chain plate conveyor belt 15, and the carrier will just fall on the chain plate conveyor belt 15. Since each of the carrier access channels is arc-shaped, the carrier can be guided along the arc-shaped carrier access channel, move to the vertically connected part of the carrier access channel, and just slide onto the chain plate conveyor belt 15. The carrier also slides along the arc-shaped carrier access channel when leaving the chain plate conveyor belt 15, and slides onto the slideway 45 after leaving the chain plate conveyor belt 15, and then can be taken away by the robot, or moved by the next carrier under inertia from the slideway 45 and squeezed onto the external conveyor belt for transportation. The electric heating device 100 is arranged in the heat-insulating shell, so that the hollow cup motor rotor carried by the carrier can be heated when the carrier is transported.

[0067] Furthermore, the chain 38 has a serpentine section, a rounded transition section and a straight connecting section, and the straight connecting section is connected to each end of the serpentine section through a rounded transition section. The serpentine section greatly expands the path of carrier baking, so that the glue of the hollow cup motor rotor carried on the carrier can be fully baked.

[0068] Further, the gear transmission mechanism includes a driving gear 5, a rotating shaft 37, a driven gear 12 and a transmission gear 34, wherein the driving gear 5 is mounted on the output shaft of the first motor 1, the driven gear 12 is meshed with the driving gear 5, the driven gear 12 is mounted on the rotating shaft 37, the rotating shaft 37 is vertically arranged and rotatably mounted on the heat-insulating shell, the transmission gear 34 is fixedly mounted on the rotating shaft 37, and the transmission gear 34 is meshed with one of the arc transition sections of the chain 38. Therefore, by using a first motor 1 as a power source, in conjunction with a gear transmission mechanism, the entire plate chain conveyor belt can be driven to move to transport the carrier. Preferably, the present invention also includes a passive gear 19 rotatably mounted on the heat-insulating shell and meshed with another arc transition section. The passive gear 19 is driven without a power source and rotates by meshing with the chain 38, and the passive gear 19 and the transmission gear 34 are respectively meshed with one of the arc transition sections. The arc transition section is equivalent to the transition point of the chain plate conveyor belt 15. The transmission gear 34 and the passive gear are arranged at the turning part. The transmission gear 34 and the passive gear have the function of supporting the chain plate conveyor belt 15 and tightening the chain 38. Preferably, the first motor 1 is a reduction first motor 1, with a gear box 3 at the front end and an encoder 2 at the rear end. The gear box 3 is fixedly installed with the mounting plate 4 through a flange, and the driving gear 5 is fixedly installed with the output shaft of the gear box 3. The mounting plate 4 is installed on the heat-insulating housing through the first mounting column 11.

[0069] After the first motor 1 is powered on, it drives the driving gear 5 to rotate. The rotation of the driving gear 5 drives the driven gear 12 meshing with the driving gear 5 to rotate. The rotation of the driven gear 12 drives the rotating shaft 37 and the transmission gear 34 to rotate. The rotation of the transmission gear 34 drives the chain 38 to move. The movement of the chain 38 drives the entire chain plate conveyor belt 15 to move.

[0070] Furthermore, it also includes a bearing mounting seat 35 and a bearing 33. The bearing mounting seat 35 is fixedly mounted on the heat-insulating shell. The rotating shaft 37 is mounted on the bearing mounting seat 35 through the bearing 33. An external thread is set on the rotating shaft 37. The locking nut is connected to the external thread of the rotating shaft 37 and locks the rotating shaft 37 on the inner ring of the bearing 33. The bearing 33 ensures the normal rotation of the rotating shaft 37.

[0071] Furthermore, a plurality of bearings 33 are provided, and they are distributed along the vertical direction. Gaskets 36 are provided at the upper and lower ends of the bearing mounting seat 35, respectively. Each gasket 36 is fixed to the bearing mounting seat 35 and abuts against one of the bearings 33, respectively, so as to limit the position of the bearing 33 at the upper end of the bearing 33 seat and the bearing 33 at the lower end of the bearing 33 seat. The plurality of bearings 33 cooperate with the gaskets 36 to ensure the reliability of the rotation of the rotating shaft 37.

[0072] The rotating shaft 37, the transmission gear 34, the driven gear 12, the bearing 33, and the bearing mounting seat 35 are coaxially mounted.

[0073] Furthermore, the heat-insulating shell is provided with limit bars 23 at positions corresponding to both sides of the straight connecting section, and the limit bars 23 are fixed to the heat-insulating shell through connecting blocks 24 .

[0074] Furthermore, the thermal insulation shell is provided with inner limit blocks 40 and outer limit blocks 39 inside and outside each turning part of the serpentine section, respectively. The inner limit blocks 40 and outer limit blocks 39 are supported by first support blocks 41 and second support blocks 42, respectively. The first support blocks 41 and the second support blocks 42 are respectively fixedly mounted on the thermal insulation shell. The inner limit blocks 40 and the outer limit blocks 39 can make the chain 38 bend into a serpentine shape and ensure the stability of the serpentine section, so that the chain 38 can reliably transport the carrier.

[0075] The heat-insulating housing is provided with a mounting surface 20 as a mounting base, for example, it can be used as a mounting base for parts such as a chain plate conveyor belt and a gear transmission mechanism.

[0076] The mounting surface 20 is disposed as a whole inside the inner insulation layer 32 of the bottom shell, and a temperature sensor 14 is disposed at the center of the inner insulation layer 32 of the bottom shell. The temperature sensor 14 is fixedly mounted to the outer insulation layer 6 of the bottom shell through a mounting block 43. The temperature sensor 14 can sense the temperature inside the present invention and display it through an external temperature display screen, so that the temperature inside the heat-insulating shell of the present invention can always be within a set temperature range. A plurality of second mounting columns 47 are disposed on the reserved mounting plate 13, and the second mounting columns 47 pass through the bottom shell and are fixedly mounted on the mounting surface 20. The plurality of second mounting columns 47 are used to prop up the mounting surface 20 so that the mounting surface 20 will not press on the bottom shell. The reserved mounting plate 13 is used to fix the bottom shell as a whole on other countertops.

[0077] Two notches 8 are provided on the side wall of the middle shell, corresponding to the first carrier access channel and the second carrier access channel, so as to facilitate the access of the carrier. The middle shell is arranged on the upper layer of the bottom shell, and the inner insulation layer 32 of the bottom shell is slightly higher than the outer insulation layer 6 of the bottom shell, so that the middle shell and the bottom shell are conveniently sealed as a whole, and the insulation effect is better. A plurality of arc-shaped reserved mounting holes 46 are provided on the outer insulation layer 7 of the middle shell, which are used to fix the middle shell to the table. The top shell is arranged as a whole above the middle shell and is fixed by a plurality of limit blocks 25. The limit blocks 25 can limit the top shell from horizontal movement and facilitate the overall opening.

[0078] Further, the chain tensioning mechanism includes a base, a moving block 212, a cushion block 211, a chain adjusting wheel 21 and an adjusting bolt, wherein:

[0079] The base 213 is provided with a horizontal slide groove 218, and the bottom of the base 213 is provided with a connection block, preferably the base 213 and the connection block are integrally formed. The base 213 is provided with a connection hole so as to connect the base 213 to an external mounting surface.

[0080] The movable block 212 is T-shaped as a whole, and has a structure that is larger at the top and smaller at the bottom. It has an integrally formed first part 2121 and a second part 2122. Each end of the first part 2121 along the width direction of the slide groove 218 respectively extends beyond the slide groove 218, so that the first part 2121 of the movable block 212 is placed on the top of the base; the second part 2122 of the movable block 212 extends into the slide groove 218 of the base so as to slide along the slide groove 218. The slide groove 218 serves as a guide groove for the movement of the movable block 212, which can guide the movement of the second part 2122. A movable rod 215 is provided at the bottom of the movable block 212, and the movable block 212 and the movable rod 215 are preferably integrally formed.

[0081] The cushion block 211 is installed on the first portion 2121 of the moving block 212 .

[0082] The center line of the chain adjusting wheel 21 is vertically arranged, and the chain adjusting wheel 21 is rotatably mounted on the cushion block 211. The chain adjusting wheel 21 is preferably located above the cushion block 211. The chain adjusting wheel 21 has outer teeth evenly arranged circumferentially for fitting into the gap of the chain 38. The chain adjusting wheel 21 is meshed with the chain 38 and does not affect the normal movement of the chain 38.

[0083] The adjusting bolt 216 includes an integrally formed bolt head and a bolt rod 214, the bolt rod 214 includes a threaded portion 217 and a cylindrical portion (the cylindrical portion is divided into a portion without a threaded portion 217, that is, this portion is smooth), and the thread of the threaded portion 217 protrudes relative to the cylindrical portion, the threaded portion 217 is threadedly connected to the connecting block, and the cylindrical surface of the cylindrical portion is attached to the moving rod 215. By turning the adjusting bolt 216, the position of the chain adjusting wheel 21 can be adjusted, so that the chain adjusting wheel 21 is pressed on the chain 38 to tighten the chain 38, prevent the chain 38 from becoming loose, and ensure the normal conveying work of the chain 38.

[0084] Furthermore, the bolt rod 214 is provided with at least two threaded portions 217 , and a cylindrical portion is provided between the two threaded portions 217 . Therefore, the adjusting bolt can drive the moving rod 215 to move regardless of forward or reverse rotation, thereby adjusting the tightness of the chain 38 .

[0085] Further, the cushion block 211 includes a fixed block and a connecting rod mounted on the fixed block, and the chain adjusting wheel 21 is mounted on the connecting rod through a bearing 219, so that the chain adjusting wheel 21 can rotate. The cushion block 211 keeps the chain adjusting wheel 21 and the chain 38 at the same height.

[0086] Furthermore, one end of the connecting rod extends beyond the bearing 219 , and a locking nut is threadedly connected to the end of the connecting rod extending beyond the bearing 219 , and the locking nut locks the chain adjusting wheel 21 on the outer ring of the bearing 219 to prevent the chain adjusting wheel 21 from shaking after a long period of use.

[0087] Furthermore, a hollow hole is provided on the first portion 2121 of the moving block 212 , which can reduce the weight of the moving block 212 and make it easier to turn the adjusting bolt to adjust the position of the chain adjusting wheel 21 .

[0088] Furthermore, the moving rods 215 are arranged in pairs and are symmetrically arranged front and back, and the pair of moving rods 215 clamp the cylindrical portion, so that the contact between the thread and the moving rod 215 is more reliable, preventing one moving rod 215 from being unable to be pushed by the adjustment bolt after being worn, thereby affecting the normal adjustment of the chain adjustment wheel 21. The pair of moving rods 215 are arranged on the boss, so that the pair of moving rods 215 and the boss together form an inverted U-shaped block.

[0089] By turning the adjusting bolt, the threaded portion 217 of the bolt rod 214 pushes the moving rod 215 and the moving block 212 to move forward and backward. The forward and backward movement of the moving block 212 drives the chain adjusting wheel 21 to move forward and backward, which is used to tighten or loosen the chain so that the chain is neither too tight nor too loose.

[0090] When the carrier conveying mechanism is working:

[0091] After the first motor 1 is powered on, it drives the driving gear 5 to rotate. The rotation of the driving gear 5 drives the driven gear 12 meshing with the driving gear 5 to rotate. The rotation of the driven gear 12 drives the rotating shaft 37 and the transmission gear 34 to rotate. The rotation of the transmission gear 34 drives the chain 38 to move. The movement of the chain 38 drives the entire chain plate conveyor belt 15 to move.

[0092] After the electric heating device in the heat-insulating shell works, the heat is isolated in the heat-insulating shell.

[0093] The carrier carrying the coreless motor rotor to be baked flows in from one of the carrier access channels and flows out from the other carrier access channel after being baked. The temperature sensor 14 installed in the heat-insulating shell senses the real-time temperature in the oven and displays it on a display screen outside the heat-insulating shell. If the temperature is higher or lower than the required temperature range, the desired baking effect can be achieved by adjusting the electric heating device or by adjusting the running speed of the chain plate conveyor belt 15.

[0094] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic baking device for baking the rotor of a coreless motor, characterized in that: It includes a heat-insulating shell, an electric heating device and a carrier conveying mechanism, wherein: The electric heating device is mounted on the heat-insulating shell, and the electric heating device comprises an electric heating tube located inside the heat-insulating shell; The carrier conveying mechanism includes a first motor and a chain-plate conveyor belt, wherein the first motor is mounted on the heat-insulating shell, the chain-plate conveyor belt is movably mounted on the heat-insulating shell and is located inside the heat-insulating shell, the chain-plate conveyor belt includes a chain and a plurality of chain plates mounted on the chain, the chain is arranged horizontally, and the first motor is connected to the chain through a gear transmission mechanism to drive the chain-plate conveyor belt to move and transport the carrier equipped with the hollow cup motor rotor.

2. The automatic baking device for baking the coreless cup motor rotor according to claim 1, characterized in that: The electric heating device further comprises a second motor, a wind wheel and a mounting frame, wherein: The motor housing of the second motor is located outside the heat-insulating housing, and the motor housing of the second motor is fixedly mounted on the heat-insulating housing; The output shaft of the second motor is connected to a heat-insulating sleeve, the heat-insulating sleeve is rotatably mounted on the heat-insulating shell, the heat-insulating sleeve extends into the heat-insulating shell and is connected to the wind wheel, and a gap is left between the wind wheel and the heat-insulating shell; The mounting frame is mounted on the inner wall of the heat-insulating shell, and the electric heating tube is fixedly mounted on the mounting frame. The electric heating tube is a serpentine tube, and electric wires are connected to the electric heating tube. The electric wires pass through the heat-insulating shell and are sealed to the heat-insulating shell.

3. The automatic baking device for baking the coreless cup motor rotor according to claim 2, characterized in that: There are two electric heating tubes, and the wind wheel is located between the two electric heating tubes.

4. The automatic baking device for baking the coreless cup motor rotor according to claim 1, characterized in that: The carrier conveying mechanism also includes a carrier access seat and a gear transmission mechanism, wherein: The first motor is mounted on the heat-insulating housing, and a motor housing of the first motor is located outside the heat-insulating housing. The first motor is connected to the chain through the gear transmission mechanism to drive the chain to move; There are two carrier access seats, each of which is installed on the side wall of the heat-insulating shell, each of which is provided with a carrier access channel, and each of which is located above the chain plate conveyor belt; Each of the vehicle access channels is arc-shaped to guide the movement of the vehicle; One end of each of the carrier entrance and exit channels is close to the chain-plate conveyor belt and the other end is away from the chain-plate conveyor belt. A slideway for receiving the carrier is arranged at the end of each of the carrier entrance and exit channels away from the chain-plate conveyor belt so that the carrier can slide on the slideway. The end of each of the carrier entrance and exit channels close to the chain-plate conveyor belt is penetrated from top to bottom so that the carrier can slide onto the chain-plate conveyor belt through the slideway of one of the carrier entrance and exit channels for transportation, and the carrier transported on the chain-plate conveyor belt can leave the chain through the slideway of another of the carrier entrance and exit channels.

5. The automatic baking device for baking the coreless cup motor rotor according to claim 4, characterized in that: The chain comprises a serpentine section, a rounded transition section and a straight connecting section, wherein the straight connecting section is connected to each end of the serpentine section via a rounded transition section.

6. The automatic baking device for baking the coreless cup motor rotor according to claim 4, characterized in that: The gear transmission mechanism includes a driving gear, a rotating shaft, a driven gear and a transmission gear, wherein the driving gear is mounted on the output shaft of the first motor, the driven gear is meshed with the driving gear, the driven gear is mounted on the rotating shaft, the rotating shaft is vertically arranged and rotatably mounted on the heat-insulating shell, the transmission gear is fixedly mounted on the rotating shaft, and the transmission gear is meshed with one of the circular arc transition sections of the chain.

7. The carrier conveying mechanism of the automatic baking equipment for baking the coreless cup motor rotor according to claim 4, characterized in that: It also includes a passive gear which is rotatably mounted on the heat-insulating shell and meshes with another of the circular arc transition sections.

8. The automatic baking device for baking the coreless cup motor rotor according to claim 4, characterized in that: It also includes a chain tensioning mechanism, which includes a base, a moving block, a cushion block, a chain adjusting wheel and an adjusting bolt, wherein: A horizontal slide groove is arranged on the base, and a connecting block is arranged at the bottom of the base; The moving block is T-shaped as a whole, and has a first part and a second part that are integrally formed. The first part of the moving block is placed on the top of the base, and the second part of the moving block extends into the slide groove of the base so as to slide along the slide groove. A moving rod is provided at the bottom of the moving block. The cushion block is mounted on the first portion of the moving block; The chain adjusting wheel is mounted on the top of the cushion block, and the chain adjusting wheel has outer teeth evenly arranged in the circumferential direction, so as to be inserted into the gap of the chain; The adjusting bolt includes an integrally formed bolt head and a bolt rod, the bolt rod includes a threaded portion and a cylindrical portion, and the thread of the threaded portion protrudes relative to the cylindrical portion, the threaded portion is threadedly connected to the connecting block, and the cylindrical surface of the cylindrical portion abuts against the moving rod.

9. The automatic baking device for baking the coreless cup motor rotor according to claim 1, characterized in that: The heat-insulating shell includes three shells connected in sequence from top to bottom, namely a top shell, a middle shell and a bottom shell; Each shell includes an inner insulation layer, a middle insulation layer and an outer insulation layer arranged from the inside to the outside, and the inner insulation layer and the outer insulation layer are fixedly connected so that the inner insulation layer and the outer insulation layer cooperate to wrap the middle insulation layer.

10. The automatic baking device for baking the coreless cup motor rotor according to claim 1, characterized in that: Also included is a temperature sensor disposed in the thermal insulation housing.

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