A rolling support device for a laser engraving machine

Abstract

In view of the drawbacks in the prior art that the operation of the roller base with adjustable roller spacing on a laser engraving machine is cumbersome and the synchronous belt needs to be tensioned and adjusted every time the spacing is adjusted, the present invention provides a rolling support device for a laser engraving machine, belonging to the technical field of laser engraving equipment. The device includes a base, two rollers, and two transmission shafts. The rollers and the transmission shafts are parallel. A swing arm is provided between each end of the roller and the corresponding transmission shaft. A clamping tooth is fixedly provided on the swing arm, and the clamping teeth on the two swing arms on the same side are meshed with each other. A first transmission wheel is provided on the two transmission shafts, and a synchronous belt is provided between the first transmission wheel and the roller. A swing arm rotation motor and a roller rotation motor are provided on the base, and a first transmission belt is provided between the roller rotation motor and the first transmission wheel. In the roller support device for the laser engraving machine, the spacing between the two rollers can be adjusted steplessly, and the tension state of the transmission belt remains unchanged during the spacing adjustment, and the operation is simple and convenient.

Description

Technical Field

[0001] The present invention belongs to the technical field of laser engraving equipment, and particularly relates to a rolling support device for a laser engraving machine. Background Art

[0002] A laser engraving machine can be widely used in the field of fine engraving of various materials. It makes the surface of the engraved part smooth and round, quickly reduces the temperature of the engraved material, and reduces the deformation and internal stress of the engraved object. When using a laser engraving machine to perform rotary engraving on products with some cylindrical or irregular cylindrical structures, such as cylindrical pen holders, wine bottles, goblets, etc., generally a roller support structure needs to be used in cooperation. The roller support structure drives the two mutually parallel rollers to rotate synchronously through an elevator to drive the product placed between the two rollers to rotate, so as to achieve rotary engraving.

[0003] For different products, their sizes are generally different. Therefore, two rollers with different spacings need to be used in cooperation, so it is necessary to use roller support structures of various specifications, resulting in too high costs and cumbersome replacement. To solve this problem, a roller support structure with adjustable spacing is provided in the prior art. For example, a utility model patent with the publication number CN212239600U and the name of a roller base with adjustable spacing for a laser engraving machine. In this patent, a first rubber roller and a second rubber roller are provided, and by assuming the second rubber roller in different installation notches, the spacing between the first rubber roller and the second rubber roller can be adjusted. However, such an adjustment method cannot achieve stepless adjustment, only equal-spacing adjustment, and the applicability is relatively poor. At the same time, after each adjustment, the tension state of the synchronous belt needs to be adjusted, and the operation is very cumbersome. Summary of the Invention

[0004] Aiming at the disadvantages that the roller base with adjustable roller spacing for a laser engraving machine in the prior art has cumbersome operation and the synchronous belt needs to be tensioned and adjusted every time the spacing is adjusted, the present invention provides a rolling support device for a laser engraving machine. The spacing between the two rollers in this roller support device for a laser engraving machine can achieve stepless adjustment, and the tension state of the transmission belt remains unchanged during the spacing adjustment, and the operation is simple.

[0005] The object of the present invention is achieved by the following technical solutions: A rolling support device for a laser engraving machine, comprising a base, two rollers arranged in parallel above the base, and two transmission shafts that can only rotate on their own axes and are arranged in parallel inside the base. The rollers and the transmission shafts are parallel, and the two rollers and the two transmission shafts correspond one by one. A swing arm is provided between each end of the roller and the corresponding transmission shaft. The swing arm includes a first connection section and a second connection section. The upper end of the first connection section is rotatably connected to the corresponding roller, the lower end of the first connection section is fixedly connected to the second connection section, and the end of the second connection section facing away from the first connection section is fixedly connected to the corresponding transmission shaft. Teeth are fixedly distributed at the end of the second connection section facing away from the first connection section. The swing arms on the same side of the two rollers are symmetrically distributed, and the teeth on the two symmetrically distributed swing arms are engaged with each other;

[0006] A first transmission wheel that can only rotate around the transmission shaft is sleeved on each of the two transmission shafts. The first transmission wheels on the two transmission shafts correspond to the two rollers one by one. A synchronous belt is connected between the first transmission wheel and the corresponding roller for transmission; A swing arm rotation motor and a roller self-rotation motor are provided on the base. The rotating shaft of the swing arm rotation motor is in transmission connection with one of the transmission shafts, and a first transmission belt is connected between the rotating shaft of the roller self-rotation motor and the two first transmission wheels for transmission. The swing arm rotation motor is a stepping motor.

[0007] In the above solution, by setting the swing arm rotation motor to rotate forward and backward to drive one of the transmission shafts to rotate, driving the swing arm to rotate, and then through the meshing transmission between the teeth on the two swing arms on the same side, the two swing arms are driven to rotate together, thereby driving the two rollers to gradually approach or gradually move away synchronously, so as to realize the stepless adjustment of the distance between the two rollers. And during the distance adjustment process, the first transmission wheel is always sleeved on the transmission shaft, its position will not change, and the distance between the first transmission wheel and the corresponding roller will not change, so the tension states of the first transmission belt and the synchronous belt will not change and do not need to be adjusted. Therefore, the operation of adjusting the distance between the two rollers is very convenient. The swing arm rotation motor is a stepping motor. When the rotating shaft of the stepping motor does not rotate, the rotor itself has a locking function. After the rotor of the stepping motor is locked, it can prevent the swing arm from rotating downward, thereby realizing the state locking function of the swing arm, so that the two rollers can be used to support the articles placed between the two rollers.

[0008] Preferably, the angle formed between the first connection section and the second connection section is greater than 90°.

[0009] Preferably, a support mechanism capable of preventing the swing arm from rotating downward is provided on the base. The force of the rotor locking function of the stepping motor itself is small, so the supporting force provided to the swing arm is small, making it impossible to place heavy objects between the two rollers. At this time, the support mechanism can be used to support the swing arm, so that heavy objects can be placed between the two rollers for laser engraving by the laser engraving machine, avoiding the swing arm rotating downward due to the large gravity borne by the swing arm during the operation of the present invention, and improving the operation stability of the present invention.

[0010] Preferably, an arc groove with an arc-shaped structure is provided on the base around the center line of one of the transmission shafts. A clamping groove is provided on the downward side at the connection of the first connecting section and the second connecting section of one of the swing arms on the transmission shaft, and the distance between the clamping groove and the center line of the transmission shaft is equal to the radius of the arc groove; the support mechanism includes a support rod that horizontally passes through the arc groove and can move along the arc groove and be embedded in the clamping groove, and a locking member is provided between the support rod and the base. With this setting, the support rod can be used to support the swing arms at different positions, and since the four swing arms are all linked, only one swing arm needs to be supported.

[0011] Preferably, the base includes a hollow base, installation grooves are provided at both ends of the base, a through groove communicating with the installation grooves is provided at the upper end of the base, the swing arm is installed in the installation groove and the first connecting section on the swing arm passes through the through groove and can swing in the through groove; end covers are detachably connected to both ends of the base; the arc groove is located on the end cover, the locking member includes a limiting plate fixedly provided on the support rod and located in the installation groove, a nut is screwed on the support rod, the nut is a wing nut, and the limiting plate and the nut are respectively located on both sides of the end cover. By the cooperation of the nut and the limiting plate, the support rod can be conveniently locked and fixed on the end cover.

[0012] Preferably, an elastic component capable of driving the support rod to move upward along the arc groove is further provided between the limiting plate and the base. The elastic component includes a first mounting rod vertically fixed on the limiting plate and parallel to the support rod, a first rotating sleeve that can only rotate around the first mounting rod is sleeved on the first mounting rod, a second mounting rod parallel to the first mounting rod is vertically fixedly connected to the end cover, a second rotating sleeve that can only rotate around the second mounting rod is sleeved on the second mounting rod, and a spring is fixedly connected between the first rotating sleeve and the second rotating sleeve. The setting of the elastic component enables the support rod to automatically move upward along the arc groove and be embedded in the clamping groove, without manually pushing the support rod upward, facilitating the rotation of the nut to press tightly on the end cover to complete the locking of the support rod, and the operation is more convenient.

[0013] Preferably, a first groove is provided on the upper end surface of the base, and the side wall of the first groove is of an arc-shaped structure. A second groove corresponding to the first groove is provided on the upper end of the end cover plate, and the side wall of the second groove is also of an arc-shaped structure and the radii of the first groove and the second groove are equal. The settings of the first groove and the second groove enable a yielding space to be formed on the base, so that larger-diameter articles can be carried between the two rollers.

[0014] Preferably, the end cover plate is detachably fixed to the base by bolts.

[0015] Preferably, two annular grooves are provided on the first driving wheel, the synchronous belt is embedded in one of the annular grooves on the first driving wheel, and the first driving belt is embedded in the other annular groove on the first driving wheel.

[0016] Preferably, second driving wheels are fixedly connected to the rotating shaft of the swing arm rotating motor, the rotating shaft of the roller self-rotating motor, and one of the transmission shafts. Annular grooves are also provided on the second driving wheels. A second driving belt is connected between the second driving wheel on the rotating shaft of the swing arm rotating motor and the second driving wheel on the transmission shaft, and the second driving belt is embedded in the annular groove on the corresponding second driving wheel; the first driving belt is connected to the second driving wheel on the rotating shaft of the roller self-rotating motor and the first driving belt is embedded in the annular groove on the corresponding second driving wheel.

[0017] Compared with the prior art, the present invention has the following beneficial effects: the present invention can infinitely adjust the distance between the two rollers, and the operation is simple. At the same time, the load-bearing performance of the two rollers can be improved through the provided support mechanism, thereby improving the operation stability of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Is a perspective view of Embodiment 1;

[0019] Figure 2 Is a perspective view of Embodiment 1 after removing the end cover plate;

[0020] Figure 3 Is a schematic diagram of the internal structure of the present invention;

[0021] Figure 4 Is a perspective view of the swing arm in Embodiment 1;

[0022] Figure 5 Schematic diagram of the use state of Embodiment 1;

[0023] Figure 6 Is a perspective view of the swing arm provided with a clamping groove in Embodiment 2;

[0024] Figure 7 Is a perspective view of the end cover plate provided with a support mechanism in Embodiment 2;

[0025] Figure 8 Stereogram of the end cover plate with a support mechanism installed in Embodiment 2;

[0026] Figure 9 is Figure 8 Enlarged view at position A in

[0027] Markings in the figure: 1, base; 2, roller; 3, transmission shaft; 4, swing arm; 5, first connecting section; 6, second connecting section; 7, tooth; 8, first driving wheel; 9, synchronous belt; 10, swing arm rotation motor; 11, roller self-rotation motor; 12, first transmission belt; 13, base; 14, installation groove; 15, through groove; 16, end cover plate; 17, first groove; 18, second groove; 19, second driving wheel; 20, second transmission belt; 21, item to be engraved; 22, arc groove; 23, clamping groove; 24, support mechanism; 25, support rod; 26, limit plate; 27, nut; 28, first mounting rod; 29, first rotating sleeve; 30, second mounting rod; 31, second rotating sleeve; 32, spring. Detailed implementation mode

[0028] The present invention will be further described below with reference to the embodiments shown in the drawings: Embodiment 1

[0029] As Figures 1 - 5 shown, a rolling support device for a laser engraving machine includes a base 1, two rollers 2 arranged in parallel above the base 1, and two transmission shafts 3 that can only rotate and are installed in the base 1 and are parallel to each other. The roller 2 is a PU rubber roller 2. Using a PU rubber roller 2 is not likely to damage the product. At the same time, the PU rubber roller 2 has good friction performance and can effectively drive the item to be engraved 21 placed between the two PU rubber rollers 2, avoiding slipping between the item to be engraved 21 and the roller 2 when driving the item to be engraved 21 to rotate. The roller 2 and the transmission shaft 3 are parallel, and the two rollers 2 and the two transmission shafts 3 correspond one by one. A swing arm 4 is provided between each end of the roller 2 and the corresponding transmission shaft 3. The swing arm 4 includes a first connecting section 5 and a second connecting section 6. The upper end of the first connecting section 5 is rotatably connected to the corresponding roller 2, the lower end of the first connecting section 5 is fixedly connected to the second connecting section 6, and the end of the second connecting section 6 facing away from the first connecting section 5 is fixedly connected to the corresponding transmission shaft 3. Teeth 7 are fixedly distributed at the end of the second connecting section 6 facing away from the first connecting section 5. The swing arms 4 on the same side of the two rollers 2 are symmetrically distributed, and the teeth 7 on the two symmetrically distributed swing arms 4 are meshed with each other;

[0030] A first transmission wheel 8 that can only rotate around the transmission shaft 3 is sleeved on each of the two transmission shafts 3. The first transmission wheels 8 on the two transmission shafts 3 correspond to the two rollers 2 one by one. A synchronous belt 9 is connected between the first transmission wheel 8 and the corresponding roller 2 for transmission; A swing arm rotation motor 10 and a roller self-rotation motor 11 are provided on the base 1. The roller self-rotation motor 11 is a stepping motor. The rotating shaft of the swing arm rotation motor 10 is in transmission connection with one of the transmission shafts 3, and a first transmission belt 12 is connected between the rotating shaft of the roller self-rotation motor 11 and the two first transmission wheels 8 for transmission.

[0031] The angle formed between the first connection section 5 and the second connection section 6 is greater than 90°.

[0032] The base 1 includes a hollow base 13. Installation grooves 14 are provided at both ends of the base 13. A through groove 15 communicating with the installation grooves 14 is provided at the upper end of the base 13. The swing arm 4 is installed in the installation groove 14, and the first connection section 5 on the swing arm 4 passes through the through groove 15 and can swing in the through groove 15; End covers 16 are also provided at both ends of the base 13, and the end covers 16 are detachably fixed to the base 13 by bolts. A first groove 17 is provided on the upper end surface of the base 13, and the side wall of the first groove 17 is of an arc-shaped structure. A second groove 18 corresponding to the first groove 17 is provided at the upper end of the end cover 16, and the side wall of the second groove 18 is also of an arc-shaped structure and the radii of the first groove 17 and the second groove 18 are equal.

[0033] Two circular ring grooves are provided on the first transmission wheel 8. The synchronous belt 9 is embedded in one of the circular ring grooves on the first transmission wheel 8, and the first transmission belt 12 is embedded in the other circular ring groove on the first transmission wheel 8. Second transmission wheels 19 are fixedly connected to the rotating shaft of the swing arm rotation motor 10, the rotating shaft of the roller self-rotation motor 11, and one of the transmission shafts 3. Circular ring grooves are also provided on the second transmission wheels 19. A second transmission belt 20 is connected between the second transmission wheel 19 on the rotating shaft of the swing arm rotation motor 10 and the second transmission wheel 19 on the transmission shaft 3 for transmission, and the second transmission belt 20 is embedded in the circular ring groove on the corresponding second transmission wheel 19; The first transmission belt 12 is in transmission connection with the second transmission wheel 19 on the rotating shaft of the roller self-rotation motor 11, and the first transmission belt 12 is embedded in the circular ring groove on the corresponding second transmission wheel 19.

[0034] The present invention is used under a laser engraving machine. When it is necessary to adjust the distance between two rollers 2, the swing arm rotation motor 10 is controlled to rotate forward or backward. The swing arm rotation motor 10 drives the connected transmission shaft 3 to rotate through the second transmission belt 20. The transmission shaft 3 drives the swing arms 4 at both ends to rotate, and the swing arms 4 at both ends of the transmission shaft 3 are respectively meshed and connected with the swing arms 4 at both ends of another transmission shaft 3 through the engaging teeth 7. Therefore, all the swing arms 4 will rotate together, and the rotation directions of the swing arms 4 that are symmetrical to each other are opposite, thereby driving the two rollers 2 to adjust the spacing. Moreover, this spacing adjustment is stepless adjustment, and the spacing between the two rollers 2 can be arbitrarily adjusted within a certain range according to needs. The swing arm rotation motor 10 is a stepping motor, and the stepping motor itself has a rotor locking function. When the rotating shaft of the stepping motor stops rotating, the rotor of the stepping motor is in a locked state. At this time, it can prevent the swing arm 4 from rotating downward, thereby realizing the state locking function of the swing arm 4, so that the two rollers 2 can be used to support the article 21 to be engraved placed between the two rollers 2. Control the roller rotation motor 11 to work. The roller rotation motor 11 drives the first transmission wheels 8 on the two transmission shafts 3 to rotate synchronously and in the same direction through the first transmission belt 12. The two first transmission wheels 8 then drive the two roller drums 2 to rotate in the same direction through the synchronous belts 9 respectively, so that the article 21 to be engraved placed between the two rollers 2 can rotate, enabling the laser engraving machine to engrave the outer side of the article 21 to be engraved. During the process of adjusting the distance between the two rollers 2, the tension states of the first transmission belt 12, the second transmission belt 20, and the synchronous belt 9 will not change. Therefore, there is no need to adjust the first transmission belt 12, the second transmission belt 20, and the synchronous belt 9, making the operation of adjusting the distance between the two rollers 2 very convenient. Embodiment 2

[0035] Such as Figures 6 - 9As shown, compared with Embodiment 1, the difference in Embodiment 2 is that an arc groove 22 with an arc-shaped structure is provided on one of the end cover plates 16 on the base 1, which is arranged around the center line of one of the transmission shafts 3. On one of the swing arms 4 on the transmission shaft 3, a clamping groove 23 is provided on the downward side at the connection of the first connection section 5 and the second connection section 6. The distance between the clamping groove 23 and the center line of the transmission shaft 3 is equal to the radius of the arc groove 22. A support mechanism 24 for preventing the swing arm 4 from rotating downward is provided on the base 1. The support mechanism 24 includes a support rod 25 that horizontally passes through the arc groove 22 and can move along the arc groove 22 and be embedded in the clamping groove 23. A locking member is provided between the support rod 25 and the base 1. The locking member includes a limiting plate 26 fixedly provided on the support rod 25 and located in the mounting groove 14. A nut 27 is screwed on the support rod 25. The nut 27 is a wing nut, and the limiting plate 26 and the nut 27 are respectively located on both sides of the end cover plate 16. An elastic component for driving the support rod 25 to move upward along the arc groove 22 is further provided between the limiting plate 26 and the base 1. The elastic component includes a first mounting rod 28 vertically fixed on the limiting plate 26 and parallel to the support rod 25. A first rotating sleeve 29 that can only rotate around the first mounting rod 28 is sleeved on the first mounting rod 28. A second mounting rod 30 parallel to the first mounting rod 28 is vertically and fixedly connected to the end cover plate 16. A second rotating sleeve 31 that can only rotate around the second mounting rod 30 is sleeved on the second mounting rod 30. A spring 32 is fixedly connected between the first rotating sleeve 29 and the second rotating sleeve 31.

[0036] The swing arm rotating motor 10 is a stepping motor, and the acting force of the rotor locking function inherent in the stepping motor is relatively small. Therefore, the supporting force that can be provided for the swing arm 4 is small, making it impossible to place heavy objects between the two rollers 2. When the item to be engraved 21 placed between the two rollers is heavy, the self-locking function of the rotor of the swing arm rotating motor 10 is not sufficient to lock the state of the swing arm 4. At this time, under the action of the item to be engraved 21, the distance between the two rollers 2 will expand, resulting in the unstable operation of the present invention and affecting the engraving quality of the laser engraving machine. At this time, the support mechanism 24 can be used to support the swing arm 4, so that heavier items can be placed between the two rollers 2 for laser engraving by the laser engraving machine, avoiding the downward rotation of the swing arm 4 due to the large gravity borne by the swing arm 4 during the operation of the present invention, and improving the stability of the operation of the present invention.

[0037] Before adjusting the distance between the two rollers 2, it is necessary to first loosen the nut 27 and push the support rod 25 to move downward along the arc groove 22. At this time, the spring 32 is continuously compressed. Then, the swing arm rotation motor 10 can be controlled to work to adjust the distance. The adjustment method is the same as that in Embodiment 1. After the distance between the two rollers 2 is adjusted, release the support rod 25. Under the action of the spring 32, the support rod 25 will be embedded in the card slot 23 and tightly pressed against the swing arm 4. At this time, tighten the nut 27 to lock and fix the support rod 25 on the end cover plate 16. The setting of the spring 32 is to ensure that the support rod 25 can always be tightly pressed against the swing arm 4 during the process of locking the support rod 25, avoiding the situation that the support rod 25 cannot be closely attached to the swing arm 4 due to the shaking of the support rod 25 during the locking process, thereby affecting the support effect on the swing arm 4. Since the four swing arms 4 are all linked, only one swing arm 4 needs to be supported.

[0038] It should be understood that in the claims and the specification of the present invention, all "including..." should be understood in an open sense, that is, its meaning is equivalent to "at least containing...", rather than in a closed sense, that is, its meaning should not be understood as "only containing...".

[0039] The specific embodiments described herein are only illustrative of the spirit of the present invention. Those skilled in the art of the present invention can make various modifications or supplements to the described specific embodiments or use similar methods to replace them, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A rolling support device for a laser engraving machine, characterized in that, The invention comprises a base, two rollers arranged in parallel above the base, and two transmission shafts installed in the base and parallel to each other and capable of rotating only. The rollers and the transmission shafts are parallel and correspond one to one with the two rollers. A swing arm is provided between each end of the roller and the corresponding transmission shaft. The swing arm comprises a first connecting section and a second connecting section. The upper end of the first connecting section is rotatably connected to the corresponding roller, the lower end of the first connecting section is fixedly connected to the second connecting section, and the end of the second connecting section facing away from the first connecting section is fixedly connected to the corresponding transmission shaft. The end of the second connecting section facing away from the first connecting section is fixedly provided with a latching gear, and the swing arms on the two rollers on the same side are symmetrically distributed, and the latching gears on the two symmetrically distributed swing arms are meshed with each other; the two transmission shafts are sleeved with a first transmission wheel that can only rotate around the transmission shaft, and the first transmission wheels on the two transmission shafts correspond to the two rollers one-to-one, respectively, and a synchronous belt is connected between the first transmission wheel and the corresponding roller; a swing arm rotating motor and a roller rotating motor are provided on the base, and the rotating shaft of the swing arm rotating motor is connected to one of the transmission shafts, and the rotating shaft of the roller rotating motor is connected to the two first transmission wheels with a first transmission belt; The cam is secured to the base with a first end fixedly secured to the second support frame, and a second end of the first support frame is secured to the base with a first end fixedly secured to the base for support.

2. The rolling support device for a laser engraving machine according to claim 1, characterized in that , the angle between the first connecting segment and the second connecting segment is greater than 90°.

3. A rolling support device for a laser engraving machine according to claim 1 or 2, characterized in that , an elastic component that can drive the support rod to move upward along the arc groove is also provided between the limit plate and the base. The elastic component includes a first mounting rod vertically fixed on the limit plate and parallel to the support rod, and a first rotating sleeve is sleeved on the first mounting rod and can only rotate around the first mounting rod. The end cover plate is vertically fixedly connected to a second mounting rod parallel to the first mounting rod, and the second mounting rod is sleeved with a second rotating sleeve that can only rotate around the second mounting rod, and a spring is fixedly connected between the first rotating sleeve and the second rotating sleeve.

4. A rolling support device for a laser engraving machine according to claim 3, characterized in that The upper end surface of the base is provided with a first groove, and the side wall of the first groove is an arc-shaped structure. The upper end of the end cover plate is provided with a second groove corresponding to the first groove, and the side wall of the second groove is also an arc-shaped structure and the radii of the first groove and the second groove are equal.

5. The rolling support device for a laser engraving machine according to claim 4, characterized in that , the end cover plate is detachably fixed to the base by bolts.

6. The rolling support device for a laser engraving machine according to claim 4, characterized in that The first transmission wheel is provided with two annular grooves, the synchronous belt is embedded in one of the annular grooves on the first transmission wheel, and the first transmission belt is embedded in the other annular groove on the first transmission wheel.

7. A rolling support device for a laser engraving machine according to claim 1, characterized in that The rotating shaft of the swing arm rotating motor, the rotating shaft of the roller rotating motor, and one of the transmission shafts are fixedly connected to a second transmission wheel, and the second transmission wheel is also provided with a circular groove. The second transmission wheel on the rotating shaft of the swing arm rotating motor and the second transmission wheel on the transmission shaft are connected by a second transmission belt, and the second transmission belt is embedded in the circular groove on the corresponding second transmission wheel; the first transmission belt is connected to the second transmission wheel on the rotating shaft of the roller rotating motor, and the first transmission belt is embedded in the circular groove on the corresponding second transmission wheel.

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