Heating device for a bending machine

Abstract

The application discloses a heating device of a bending machine, which comprises a furnace body and a heating element arranged in the furnace body, the furnace body is provided with an inlet and an outlet, and a rotating wheel unit is arranged in the furnace body, the rotating wheel unit comprises a rotating shaft and a plurality of blades arranged around the rotating shaft, a clamping space is formed between adjacent blades for clamping materials, and the outlet is not lower than the rotating shaft of the rotating wheel unit. The heating device of the bending machine is provided with the position of the outlet, so that the rotating wheel unit always rotates upward to convey materials, fire caused by falling of the materials is avoided, and production safety is ensured.

Description

Technical Field

[0001] This invention relates to the field of machining technology, and in particular to a bending machine for processing the bending surface of mirror frames. Background Technology

[0002] Eyeglasses, including prescription glasses, reading glasses, and sunglasses, are common items in people's daily lives. When in use, the frame sits on the bridge of the nose, and the curvature of the frame at the bridge largely determines the user's comfort. However, in the current process of manufacturing the nose bridge curvature of eyeglass frames, a heating wire is usually placed under the frame to heat it to meet the temperature requirements for curvature processing. If the frame falls, it can easily catch fire. Summary of the Invention

[0003] In view of this, a heating device for a bending machine that can effectively prevent eyeglass frames from falling off is provided.

[0004] A heating device for a noodle bending machine includes a furnace body and a heating element disposed within the furnace body. The furnace body has a feed inlet and a discharge outlet. A rotary wheel unit is disposed within the furnace body. The rotary wheel unit includes a rotating shaft and a plurality of blades arranged around the rotating shaft. A clamping space is formed between adjacent blades for clamping materials. The discharge outlet is not lower than the rotating shaft of the rotary wheel unit.

[0005] Compared to existing technologies, the heating device of the bending machine of this invention, through its position relative to the discharge port, ensures that the rotating wheel unit always rotates upward to convey materials, thereby preventing materials from falling and causing fires and ensuring production safety. Attached Figure Description

[0006] Figure 1 This is a schematic diagram of the structure of a bending machine that uses the heating device of the present invention.

[0007] Figure 2 for Figure 1 The diagram shows the internal structure of the bending machine after removing the outer cover.

[0008] Figure 3 for Figure 2 The diagram shows the structure of the heating device of the bending machine.

[0009] Figure 4 for Figure 3 The diagram shows the internal structure of the heating device with part of the furnace body removed.

[0010] Figure 5 This is an exploded view of the rotating unit of the heating device.

[0011] Figure 6 This is a schematic diagram of the drive mechanism of the heating device.

[0012] Figure 7This is an exploded view of the drive mechanism from another angle.

[0013] Figure 8 This is an assembly drawing of the rotary wheel unit and drive mechanism.

[0014] Figure 9 This is another assembly view of the rotary wheel unit and the drive mechanism. Detailed Implementation

[0015] To facilitate understanding of the present invention, a more comprehensive description will be given below with reference to the accompanying drawings. One or more embodiments of the present invention are exemplarily shown in the drawings to provide a more accurate and thorough understanding of the disclosed technical solutions. However, it should be understood that the present invention can be implemented in many different forms and is not limited to the embodiments described below.

[0016] Figure 1 and Figure 2 The diagram shown is a schematic diagram of a noodle bending machine using the heating device 300 of the present invention. The noodle bending machine also includes an outer cover 100, a feeding device 200, a detection device 400, and a noodle bending device 500 disposed inside the outer cover 100.

[0017] The feeding device 200 is located on the upper right side of the outer cover 100, the heating device 300 is located behind the upper left side of the outer cover 100, the bending device 500 is located in front of the upper left side of the outer cover 100, and the detection device 400 is located between the heating device 300 and the bending device 500. Materials to be processed, such as eyeglass frames, are automatically conveyed to the heating device 300 by the feeding device 200 for heating. The detection device 400 detects the temperature of the heated eyeglass frames to determine whether they have reached the temperature required for the bending device 500 to form the curved surface. Eyeglass frames that do not meet the temperature requirement are rejected, while eyeglass frames that meet the temperature requirement are formed into a curved surface at the bridge of the eyeglass frame within the bending device 500.

[0018] A waste inlet 102 is provided on the lower left side of the outer cover 100 for removing mirror frames that have failed to meet temperature requirements and have been rejected by the testing device 400. The removed mirror frames can be reused after cooling and are reloaded by the feeding device 200. Preferably, an operation panel 102 is provided on the top of the outer cover 100 for installing a human-machine interface and operation buttons to control the operation of the bending machine. Additionally, the outer cover 100 has multiple transparent observation windows corresponding to each of the devices 200, 300, 400, and 500, allowing for direct observation of the operation of each device 200, 300, 400, and 500 for timely inspection and maintenance. Preferably, a toolbox 700 is provided on the bottom right side of the outer cover 100.

[0019] like Figures 3 to 4The heating device 300 includes a furnace body 320, a heating element 340 disposed in the furnace body 320, a drive mechanism 360 mounted on the furnace body 320, and a rotary wheel unit 380 mounted in the furnace body 320 and driven by the drive mechanism 360.

[0020] The furnace body 320 includes four side plates (front, back, left, and right), a bottom plate, and a top plate connecting the four side plates. The four side plates, the bottom plate, and the top plate together form a relatively enclosed cavity to maintain the high temperature inside the furnace body 320. The top plate has a feeding port 322 formed at its edge near the rear side plate. The grippers 255 of the feeding device 100 tilt the gripped mirror frame into the feeding port 322. The feeding port 322 is provided with a guide plate 324 inclined towards the rotating wheel unit 380 inside the furnace body 320. A guide rail 326 is provided on each side of the guide plate 324. Under the action of gravity, the mirror frame falling on the guide plate 324 automatically slides along the guide rail 326 onto the rotating wheel unit 380.

[0021] Preferably, the furnace body 320 is further provided with an opening and closing door mechanism 390. The opening and closing door mechanism 390 is mounted on the top plate and located near the rear side plate, and includes a fixing frame 392, a drive cylinder 394 mounted on the fixing frame 392, and a heat-insulating cover plate 396 that is driven up and down by the drive cylinder 394. When the feed inlet 322 is not feeding, the drive cylinder 394 extends to push the heat-insulating cover plate 396 down to close the feed inlet 322, preventing heat loss from the furnace body 320; conversely, when the feed inlet 322 is feeding, the drive cylinder 394 retracts to move the heat-insulating cover plate 396 up, allowing the feed inlet 322 to be exposed.

[0022] Please also refer to Figure 5 The rotating wheel unit 380 includes a rotating shaft 382 and a plurality of blades 384 surrounding the rotating shaft 382. The two ends of the rotating shaft 382 are pivotally connected to the center of the left and right side plates of the furnace body 320, respectively. The blades 384 are evenly spaced, with adjacent blades 384 forming a clamping space to engage a mirror frame resting on the rotating wheel 380 and rotate the mirror frame within the furnace body 320. Two fixed wheels 386 are fixedly sleeved on the rotating shaft 382 and clamp the two ends of the blades 384, holding the blades 384 in the middle of the rotating shaft 382. Preferably, the rotating wheel unit 380 further includes two anti-deviation wheels 388, which are respectively installed at the two ends of the blades 384 and located outside the fixed wheels 386. The center of the anti-deviation wheel 388 protrudes outward toward the direction of the blade 384, guiding the lens frame that has deviated and fallen on the anti-deviation wheel 388 to slide into the clamping space between the blades 384, ensuring the accuracy of the lens frame's position on the rotating wheel unit 380 and preventing the lens frame from falling off.

[0023] The heating element 340 is disposed below the rotating unit 380. As the mirror frame rotates with the rotating unit 380, the heating element 340 heats the mirror frame to reach the temperature required for forming the curved surface. In this embodiment, the heating element 340 is an electric heating wire, and the heat it generates is dissipated outward by thermal radiation to heat the mirror frame on the rotating unit 380. Preferably, a fan 342 is also disposed on the top of the furnace body 320, which generates a forced airflow to accelerate the airflow inside the furnace body 320, so that the temperature is uniform throughout the furnace body 320, ensuring that the mirror frame is heated evenly. In this embodiment, the fan 342 is installed on the top plate of the furnace body 320, and its impeller 344 extends into the furnace body 329 and is located above the rotating unit 380. In other embodiments, the heating element 340 can also be disposed above the rotating unit 380, so that the fan 342 blows directly onto the heating element 340, forming a hot airflow flowing towards the rotating unit 380, making the mirror frame heated more directly and evenly.

[0024] like Figures 6 to 9 As shown, the drive mechanism 360 is connected to the rotating wheel unit 380 and includes a ratchet unit 361 and a locking unit 362. The ratchet unit 361 and the locking unit 362 cooperate to cause the rotating wheel unit 380 to rotate stepwise, so that the mirror frame falling on the rotating wheel unit 380 can be heated evenly. In this embodiment, both the ratchet unit 361 and the locking unit 362 are installed at the left end of the rotating shaft 382; in other embodiments, the ratchet unit 361 and the locking unit 362 can be respectively arranged at both ends of the rotating shaft 382.

[0025] The ratchet unit 361 includes a ratchet 363, a pawl 364, a rocker arm 365, an active cylinder 366 for driving the rocker arm 365, and an elastic element 367 connecting the rocker arm 365 and the pawl 364.

[0026] The ratchet 363 is fixedly sleeved with the rotating shaft 382, ​​and the two rotate synchronously. The ratchet 363 has ratchet teeth 369 formed on its circumference. In this embodiment, the inclined surface of the ratchet teeth 369 of the ratchet 363 faces counterclockwise upwards. The bottom of the pawl 364 forms a pointed tip 368, which engages with the ratchet teeth 369 of the ratchet 363. The pawl 364 can crawl between the ratchet teeth 369 in a counterclockwise direction, and conversely, it engages with the ratchet teeth 369 in a clockwise direction.

[0027] The active cylinder 366 is located above the ratchet 363, and it drives the rocker arm 365 to move in the back-and-forth direction. The rocker arm 365 is L-shaped, with one end pivotally connected to the active cylinder 366, and the other end forming a collar 3650 rotatably sleeved on the rotating shaft 382. The rocker arm 365 moves laterally under the push of the active cylinder 366 while rotating relative to the rotating shaft 382. The top of the pawl 364 is connected to the end of the rocker arm 365 near the active cylinder 366 via an elastic element 367, which is preferably a spring.

[0028] Initially, the active cylinder 366 is in a retracted position, and the spring 367 is stretched. When the ratchet unit 361 is activated, the active cylinder 366 extends backward, driving the rocker arm 365 and pawl 364 to move backward. The spring 367 returns to its original deformation, and the pawl 364 crawls counterclockwise from one ratchet tooth 369 to the next, while the ratchet 363 remains stationary. Then, the active cylinder 366 retracts, driving the rocker arm 365 and pawl 364 forward to reset. Since the pawl 364 engages with the ratchet 363, the rocker arm 365 drives the ratchet 363 to rotate, which in turn drives the rotating wheel unit 380 to rotate clockwise by the angle of an adjacent ratchet tooth 369. This cycle repeats, enabling the rotating wheel unit 380 to rotate forward step by step, transporting the lens frame on the rotating wheel unit 380 forward step by step, ensuring even heating of the lens frame and adjusting the heating time.

[0029] The locking unit 362, in conjunction with the ratchet unit 361, intermittently locks the rotating wheel unit 380, including a locking wheel 371, a locking arm 372, and a locking cylinder 373.

[0030] The locking wheel 371 is stacked on the outside of the ratchet 363 and fixedly connected to the rotating shaft 382. The periphery of the locking wheel 371 is provided with evenly spaced slots 374. The middle part of the locking arm 372 is pivotally connected to the left side plate of the furnace body 320, the bottom end is pivotally connected to the locking cylinder 373, and the top end is provided with a latch 375 for engaging with the slots 374 of the locking wheel 371. Thus, the locking arm 372 is similar to a lever structure. When the locking cylinder 373 extends, the locking arm 372 rotates counterclockwise so that its latch 375 engages in the slots 374, locking the locking wheel 371 and thus locking the ratchet 363; conversely, when the locking cylinder 373 retracts, the locking arm 372 rotates clockwise so that its latch 375 disengages from the slots 374, releasing the locking wheel 371, and the ratchet 363 can be driven to rotate by the active cylinder 366.

[0031] Better, such as Figure 7As shown, the locking unit 362 also includes first and second sensors 376 and 377. The first sensor 376 is located at the end of the locking arm 372 near the locking cylinder 373, and the second sensor 377 is located at the end of the locking arm 372 near the latch 375. The signals detected by the first sensor 376 and the second sensor 377 determine whether the locking arm 372 is in a locked or unlocked state. When the locking arm 372 is in the locked state, the ratchet 363 remains stationary, and the active cylinder 366 extends backward, causing the pawl 364 to crawl from the previous ratchet tooth 369 to the next ratchet tooth 369 of the ratchet 363. When the locking arm 372 is in the unlocked state, the active cylinder 366 retracts, causing the ratchet 363 and the rotating wheel unit 380 to rotate forward by an angle corresponding to one ratchet tooth 369. In this way, when the locking unit 362 locks the ratchet 363, the active cylinder 366 forcibly pushes the rotating wheel unit 380 to rotate, ensuring the accuracy and coordination of the operation of the drive mechanism 360.

[0032] The ratchet unit 361 of the heating device 300 drives the rotating wheel unit 380 to rotate forward in a stepwise manner, causing the mirror frame on the rotating wheel unit 380 to move from the feed port 322 toward the front side plate of the furnace body 320. Correspondingly, a discharge port 328 is formed on the front side plate. After being heated in the furnace body 320 for a predetermined time, the mirror frame rotates to the discharge port 328 and is discharged. Preferably, the discharge port 328 is located in the middle of the front side plate of the furnace body 320, corresponding to the position of the rotating shaft 382. In this way, during the rotation of the mirror frame in the furnace body 320, the blade 384 carrying the mirror frame is always in an upward state, and the mirror frame will not fall off the rotating wheel unit 380, thereby avoiding the fire problem and ensuring production safety. The entire heating process is fully automated, and the heating is fast and uniform, which is beneficial for subsequent forming of curved surfaces.

[0033] It should be noted that the present invention is not limited to the above-described embodiments. Based on the inventive spirit of the present invention, those skilled in the art can make other changes, and these changes made in accordance with the inventive spirit of the present invention should be included within the scope of protection claimed by the present invention.

Claims

1. A heating device of a bending machine, comprising a furnace body and a heating element arranged in the furnace body, the furnace body comprising four side plates in front, back, left and right, and a bottom plate and a top plate connecting the four side plates, an inlet and an outlet being formed on the furnace body, characterized in that, The furnace body is provided with a rotating wheel unit, which comprises a rotating shaft and a plurality of blades arranged around the rotating shaft. Adjacent blades form a clamping space to clamp a frame falling on the rotating wheel unit and drive the frame to rotate in the furnace body. The rotating wheel unit further comprises two anti-deviation wheels, which are sleeved on the rotating shaft and arranged at both ends of the blades respectively. The center of each anti-deviation wheel protrudes outward towards the blade. The top plate is formed with the feeding port at the edge close to the rear plate. The feeding port is provided with a guide plate inclined towards the rotating wheel unit in the furnace body. The front plate is formed with the discharging port, which is not lower than the rotating shaft of the rotating wheel unit.

2. The heating device of a bender according to claim 1, wherein The rotating wheel unit is arranged above the heating element.

3. The heating device of a bender according to claim 1, wherein The rotating wheel unit is arranged below the heating element.

4. The heating device of a bender according to claim 1, wherein The drive mechanism for driving the rotating wheel unit to step rotate is further included.

5. The heating device of a bender according to claim 4, wherein The drive mechanism comprises a ratchet wheel, a pawl, a rocker arm, a driving cylinder, and an elastic member. The ratchet wheel is fixedly sleeved on the rotating shaft. One end of the rocker arm is rotatably sleeved on the rotating shaft, and the other end is connected with the driving cylinder. One end of the pawl is engaged with the ratchet teeth of the ratchet wheel, and the other end is connected with the rocker arm through the elastic member.

6. The heating device of a bender according to claim 5, wherein The locking unit matched with the ratchet wheel is further included, which comprises a locking wheel, a locking arm, and a locking cylinder. The locking wheel is fixedly sleeved on the rotating shaft. The locking cylinder drives the locking arm to engage or separate from the locking wheel.

7. The heating device of a bender according to claim 6, wherein The center of the locking arm is rotatably connected to the furnace body. One end of the locking arm is connected with the locking cylinder, and the other end forms a clamping tongue to engage with the locking wheel.

8. The heating device of a bender according to claim 7, wherein The sensors corresponding to both ends of the locking arm are further included. The sensors are linked with the locking cylinder, and the driving cylinder is started according to the signal of the sensors.

9. The heating device of a bender according to claim 1, wherein The fan arranged above the rotating wheel unit is further included.

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