Slender shaft grinding device provided with pressing plate and based on feeding and discharging brackets

Abstract

The slender shaft grinding device comprises a centerless grinding machine, feeding platforms are arranged in the feeding direction and the discharging direction of the centerless grinding machine respectively, a plurality of sets of driving modules matched with one another are arranged on the feeding platforms, each driving module comprises two driving wheels, and the driving wheels are connected with the centerless grinding machine. The driving wheels are arranged on a support, the bottom of the support is fixed to the feeding platform through a transverse fine adjustment sliding table, the two driving wheels are both connected with a speed-adjustable driving motor, two coarse adjustment sliding tables are arranged at the bottom of the feeding platform, and the coarse adjustment sliding tables are connected with supporting legs through first lifting assemblies. The driving wheels can be conveniently replaced, the driving wheels are mutually independent, and the running stability is reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of shaft processing, and particularly relates to a slender shaft grinding device with a pressing plate and based on a loading and unloading bracket. Background Art

[0002] Problems such as poor rigidity, easy bending deformation and vibration, large thermal deformation, and many processing defects exist in the processing of slender shafts. Therefore, each link needs to be strictly controlled during the processing to ensure the processing quality and efficiency. The centerless grinding machine is an efficient finishing equipment that can meet the processing needs of slender shafts.

[0003] In the feeding and discharging directions of the centerless grinding machine, loading and unloading brackets need to be arranged to ensure the stable transportation of the slender shaft in the horizontal direction. The existing loading and unloading brackets are all realized by the auxiliary cooperation of multiple driving wheels and multiple driven wheels. The multiple driving wheels and the multiple driven wheels are connected in series by a connecting shaft to achieve the effect of synchronous action. When maintenance and replacement are required, the disassembly difficulty is relatively large. And since the power is driven by a set of belt pulleys and a motor, when damaged, the slender shaft being processed at present cannot be processed completely, or the processing accuracy is greatly affected. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to provide a slender shaft grinding device with a pressing plate and based on a loading and unloading bracket, which can conveniently replace the driving wheels, and the driving wheels are independent of each other, and the operation stability is reliable.

[0005] To solve the above technical problems, the utility model provides a slender shaft grinding device with a pressing plate and based on a loading and unloading bracket, including a centerless grinding machine. Feeding platforms are arranged in both the feeding and discharging directions of the centerless grinding machine. Multiple groups of mutually cooperating driving modules are arranged on the feeding platforms. Each driving module includes two driving wheels. The driving wheels are arranged on supports. The bottom of the support is fixed on the feeding platform through a transverse fine-tuning slide. At least one of the two driving wheels is connected to a driving motor. Two coarse-tuning slides are arranged at the bottom of the feeding platform. The coarse-tuning slides are connected to the supporting feet through a first lifting assembly.

[0006] Further, a material transfer support arm is arranged on one side of the driving module. The bottom of the material transfer support arm is connected to the feeding platform through a material supporting lifting cylinder.

[0007] Further, an installation bottom plate is arranged at the bottom of the support. A rotating shaft is further arranged at the bottom of the installation bottom plate. The rotating shaft is arranged in a positioning hole on the transverse fine-tuning slide. An arc-shaped hole is further arranged on the installation bottom plate and is fixed on the transverse fine-tuning slide through a locking screw.

[0008] Furthermore, a loading bin is arranged on one side of the feeding platform in the feeding section of the centerless grinding machine, and an unloading bin is arranged on one side of the feeding platform in the discharging section of the centerless grinding machine.

[0009] Furthermore, the loading bin includes a first support. A number of horizontal crossbeams are arranged on the first support. A first rotating feeding arm is arranged on one side of the horizontal crossbeam. One end of the first rotating feeding arm located at one end of the feeding platform is connected to the first support through a first rotating shaft, and the other end is connected to the first support through a first rotating cylinder. A plurality of first supporting arms are further arranged on the first support on the side of the feeding platform of the horizontal crossbeam. A limiting hook part is arranged at the end of the first supporting arm. A pressing plate is arranged above the first supporting arm. A single-piece feeding space is formed by the cooperation between the pressing plate and the first supporting arm. An upper feeding port is formed between the limiting hook part and the end of the pressing plate. A second rotating feeding arm is arranged on one side of the upper feeding port. The second rotating feeding arm is connected to the first support through a second rotating cylinder and a second rotating shaft.

[0010] Furthermore, a buffer arm is arranged on one side of the upper feeding port. The buffer arm is connected to the first support through a limiting shaft. A limiting adjusting arm is arranged at one end of the limiting shaft. Limiting adjusting screws are arranged on both sides of the limiting adjusting arm along the rotating direction. The limiting adjusting screws are arranged on a limiting support plate, and the limiting support plate is fixed on the first support.

[0011] Furthermore, the pressing plate is arranged at the bottom of a lifting beam. Second lifting components are arranged between both ends of the lifting beam and the first support.

[0012] Furthermore, a hoisting support is arranged between the pressing plate and the lifting beam.

[0013] Furthermore, polyurethane protection strips are arranged on the surfaces of the horizontal crossbeam, the first rotating feeding arm and the buffer arm.

[0014] Furthermore, the unloading bin includes a second support. A number of material supporting beams are arranged on the second support. A curved section is arranged at the end of the material supporting beam on the side of the feeding platform. A material blocking arm is arranged on one side of the curved section. The material blocking arm is connected to the second support through a third rotating cylinder and a third rotating shaft.

[0015] The beneficial effects of the present utility model:

[0016] 1. Each driving wheel is independently arranged on a lateral fine-tuning slide table, and at least one of the two cooperating driving wheels has driving power. Therefore, the driving wheels with power are not affected by each other. Even if a driving wheel is damaged, it does not affect the operation of other driving wheels. Therefore, the material can still be continuously conveyed. Moreover, for the damaged driving wheel, it can be quickly adjusted away from the slender shaft through the lateral fine-tuning slide table, reducing the impact on the machining of the slender shaft. It is also possible to replace the driving wheel without stopping the machine, improving production efficiency.

[0017] 2. The feeding bin uses an inclined pushing method for feeding, and through the cooperation of the first support arm and the pressing plate, the material can be laid flat and sent out one by one. The structure is novel and efficient. Compared with the push plate type feeding, this method does not require continuous operation, effectively reducing the energy consumption during use. Description of the Drawings

[0018] Figure 1 is the overall structural schematic diagram of the present utility model;

[0019] Figure 2 is the partial structural schematic diagram of the feeding mechanism of the present utility model;

[0020] Figure 3 is the structural schematic diagram of the surface components of the feeding platform of the present utility model;

[0021] Figure 4 is the rear view structural schematic diagram of the feeding bin of the present utility model;

[0022] Figure 5 is the structural schematic diagram of the cooperation between the first support arm and the pressing plate of the present utility model;

[0023] Figure 6 is the partial structural schematic diagram of the second rotary feeding arm of the present utility model;

[0024] Figure 7 is the partial structural schematic diagram of the buffer arm of the present utility model;

[0025] Figure 8 is the partial structural schematic diagram of the discharging bin of the present utility model. Detailed Embodiments

[0026] The following further illustrates the present utility model in conjunction with the drawings and specific embodiments, so that those skilled in the art can better understand the present utility model and be able to implement it, but the examples given are not intended to limit the present utility model.

[0027] Refer to Figures 1 to 3As shown in the figure, an embodiment of the slender shaft grinding device with a pressing plate based on a loading and unloading bracket of the present utility model includes a centerless grinding machine 1. Feeding platforms 2 are arranged in both the feeding and discharging directions of the centerless grinding machine. Multiple groups of cooperating driving modules are arranged on the feeding platforms. The driving module includes two driving wheels 3. The driving wheels are arranged on a support 4. The bottom of the support is fixed on the feeding platform through a lateral fine-tuning slide 5. Both driving wheels are connected to a stepless speed-regulating driving motor 6. Two coarse-tuning slides 7 are arranged at the bottom of the feeding platform. The coarse-tuning slides are connected to a support leg 9 through a first lifting assembly 8.

[0028] In the driving module, the two driving wheels are arranged at a non-90-degree angle with respect to the feeding direction. When the two driving wheels rotate, they can drive the slender shaft to rotate and move axially. The cooperation of multiple driving modules realizes the purpose of supporting and conveying the slender shaft. Specifically, during use, the slender shaft is placed on the driving module on the feeding side. Through driving, the slender shaft enters the centerless grinding machine in a rotating state. During the processing of the centerless grinding machine, the processed part of the slender shaft continuously advances onto the driving module on the discharging side until the processing is completed and the slender shaft is completely placed on the driving module on the discharging side. Finally, the slender shaft can be removed from the driving module. Since the driving wheels in the driving module of the present application are independently driven by a stepless speed-regulating driving motor, the rotation of the driving wheels does not affect each other during use. When one of the driving wheels has a problem, the corresponding damaged driving wheel can be driven to move to a position where it does not contact the slender shaft through the lateral fine-tuning slide. At this time, the damaged driving wheel does not affect the continuous processing of the slender shaft. It just cannot support the slender shaft. Since there are other driving modules to assist, the unprocessed slender shaft can continue the processing operation. Of course, the driving wheel can also be directly repaired at this position, reducing the downtime.

[0029] During the assembly process, the position of the centerless grinding machine is fixed. The driving modules on both sides need to be aligned with the inlets and outlets of the centerless grinding machine. Therefore, the coarse-tuning slide, the lateral fine-tuning slide, and the first lifting assembly are designed. The first lifting assembly is used to adjust the height position of the driving module. The coarse-tuning slide is used to adjust the position of the driving module in the horizontal direction and in the direction of the diameter of the slender shaft. The lateral fine-tuning slide is used to adjust the relative position of the two driving wheels in the driving module. This adjustment can be used for slender shafts of different diameters. Of course, the lateral fine-tuning slide can also adjust the position of the driving module in the horizontal direction and in the direction of the diameter of the slender shaft. Through the setting of the three groups of position adjustment mechanisms, the position accuracy of the driving module can be greatly improved, and the operation is convenient and reliable.

[0030] Since the requirements for the moving speed of the slender shaft are inconsistent during processing of different batches, speed adjustment can be achieved by adjusting the installation angle of the driving wheel. Therefore, a mounting base plate 12 is provided at the bottom of the support, and a rotating shaft is also provided at the bottom of the mounting base plate. The rotating shaft is arranged in a positioning hole on the transverse fine-tuning slide. An arc hole 13 is also provided on the mounting base plate and is fixed to the transverse fine-tuning slide by a locking screw. The number of the arc holes is 2, and they are evenly arranged on both sides of the support. The center of the arc hole is consistent with the center of the rotating shaft. When adjusting the rotation, the rotating shaft plays a positioning role, and the arc hole is used as an avoidance hole. After adjustment, it can be fixed by a locking screw. The operation is convenient and reliable. Angle scales can also be set around the arc hole.

[0031] A loading bin 14 is provided on one side of the feeding platform of the feeding section of the centerless grinder, and a unloading bin 15 is provided on one side of the feeding platform of the discharging section of the centerless grinder. The slender shafts to be processed are stacked and placed in the loading bin for storage. The loading and unloading can be achieved by manual handling or by mechanical coordination to achieve the effect of automatic loading and unloading, thereby improving the automation performance.

[0032] Based on the design of automatic loading and unloading, a material transfer support arm 10 is arranged on one side of the driving module. The bottom of the material transfer support arm is connected to the feeding platform through a support lifting cylinder 11. There are multiple material transfer supports. When the support lifting cylinder drives the material transfer support arm to lift upward, at the feeding end, the slender shaft is fed out of the loading bin and is received by the material transfer support arm. The surface of the material transfer support arm is inclined upward, and the slender shaft rolls down along the inclined surface to the hook part of the material transfer support arm, that is, it is above the driving module and at the discharging end. The material transfer support arm can lift the slender shaft out of the positioning support of the drive module, and is located at the hook part of the material transfer support arm. The surface of the material transfer support arm is inclined downward, so that the slender shaft rolls along the inclined surface to the side of the unloading bin to realize unloading; when the support lifting cylinder drives the material transfer support arm to move downward and reset, at the feeding end, the slender shaft is supported by the two driving wheels in the drive module, and the material transfer support arm is separated from the slender shaft to realize loading, and at the discharging end, the material transfer support arm avoids the entry of the next slender shaft.

[0033] Specifically, refer to Figures 4 to 7 As shown, the loading bin includes a first bracket 16, on which a plurality of horizontal beams 17 are arranged, and a first rotating feeding arm 18 is arranged on one side of the horizontal beam. The first rotating feeding arm is located at one end of the feeding platform and is connected to the first bracket through a first rotating shaft 19, and the other end is connected to the first bracket through a first rotating cylinder 20. The horizontal beam is fixed, and the first rotating feeding arm can be driven to rotate by the first rotating cylinder, so that one end of the first rotating feeding arm is tilted, that is, the unprocessed slender shaft stored and placed can be lifted obliquely. At this time, due to the formation of the inclined surface, the slender shaft rolls toward the feeding platform due to its own weight.

[0034] Due to the stacking of the slender shafts, when there is no obstruction, all the slender shafts will roll toward the feeding platform at one time, and they are processed individually during processing. Therefore, it is also necessary to set a plurality of first supporting arms 21 on the first bracket on the side of the feeding platform where the horizontal beam is located. A limiting hook 22 is set at the end of the first supporting arm, and a pressing plate 23 is set above the first supporting arm. The pressing plate and the first supporting arm cooperate to form a single feeding space, and an upper feeding port is formed between the limiting hook and the end of the pressing plate. The slender shafts rolling down from the first rotating feeding arm enter the single feeding space one by one in turn and are finally blocked by the limiting hook, that is, to ensure that the slender shaft is in the upper feeding port. The opening size of the upper feeding port needs to be larger than the diameter of the slender shaft, and the end of the pressing plate on one side of the horizontal beam needs to extend above the horizontal beam to form a trumpet-shaped stacking area to prevent the slender shafts that cannot enter the single feeding space from rolling to the outside. The single feeding space is designed as an oblique space to ensure that the slender shaft can automatically roll down to the position of the limiting hook.

[0035] At this time, the slender shaft at the upper feeding port has lost its moving power due to obstruction, so automatic feeding cannot be achieved. Therefore, it is necessary to set a second rotating feeding arm 24 on one side of the upper feeding port. The second rotating feeding arm is connected to the first bracket through the second rotating cylinder 25 and the second rotating shaft 26. The second rotating feeding arm is driven by the second rotating cylinder to rotate along the second rotating shaft, that is, a swinging effect is achieved. During the swinging process, the end of the second rotating feeding arm can be pushed upward at the bottom of the slender shaft in the upper feeding port. After the slender shaft is pushed out of the upper feeding port, the slender shaft can continue to roll along the outer inclined surface set on the limiting hook, and finally roll onto the material transfer support arm. The material transfer support arm receives the slender shaft, see the above description.

[0036] In the above-mentioned slender shaft feeding process, since the slender shaft rolls on the inclined plane, the impact force accumulated during the rolling process is finally borne by the limit hook, which will cause excessive damage to the limit hook. Therefore, a buffer arm 27 is also provided on one side of the upper feeding port. The buffer arm is used to bear the impact force. The buffer arm is connected to the first bracket through a limit shaft 28. A limit adjustment arm 29 is provided at one end of the limit shaft. Limit adjustment screws 30 are provided on both sides of the limit adjustment arm along the rotation direction. The limit adjustment screws are provided on the limit support plate 31. The limit support plate is fixed on the first bracket. The rotation angle of the limit adjustment arm can be quickly adjusted by extending or retracting the two limit adjustment screws. The fixed position of the limit adjustment arm determines the setting angle of the buffer arm. The impact force borne on the buffer arm is transmitted to the limit adjustment arm through the limit shaft, and then transmitted to the first bracket by the limit adjustment arm through the limit adjustment screw and the limit support plate, which plays a good buffering role and is convenient and reliable to operate.

[0037] When used for slender shafts of different diameters, the size of the single-piece feeding space needs to be changed. Otherwise, when the single-piece feeding space is too small, the slender shaft cannot enter the single-piece feeding space; when the single-piece feeding space is too large, the slender shaft will be stuck in the single-piece feeding and cannot be arranged in sequence. Therefore, the space pressing plate is arranged at the bottom of the lifting beam 32, and a second lifting component 33 is arranged between both ends of the lifting beam and the first support. The second lifting component can directly drive the lifting beam to move horizontally up and down, so as to quickly drive the pressing plate to rise or fall, so as to adjust the size of the single-piece feeding space, and the operation is convenient and reliable. During the use of the pressing plate, there are also situations that require maintenance. Therefore, a hoisting support 34 is arranged between the pressing plate and the lifting beam, so that the connection structure between the two is simple and the operation is convenient.

[0038] Referring to Figure 8 As shown in the figure, the blanking bin includes a second support 35. A number of material supporting beams 36 are arranged on the second support. A curved section 37 is arranged at the end of the material supporting beam on one side of the feeding platform. The purpose of the curved section is to collect and blank the processed slender shaft by means of unpowered rolling through its own weight. When rolling, there is a good fitting effect, avoiding collision damage. A material blocking arm 38 is arranged on one side of the curved section. The material blocking arm is connected to the second support through a third rotating cylinder 39 and a third rotating shaft 40. Through the arrangement of the third rotating cylinder, the material blocking arm can be driven to rotate along the third rotating shaft. The material blocking arm can extend above the surface of the material supporting beam and retract below the surface of the material supporting beam. This material blocking arm can effectively block during the blanking process of the slender shaft, avoiding the impact damage caused by the increasing rolling speed of the slender shaft.

[0039] Polyurethane protection strips are arranged on the above-mentioned horizontal cross beam, the first rotating feeding arm, the buffer arm and the surface of the material supporting beam to reduce the contact between the slender shaft and objects with higher hardness and improve the quality.

[0040] The above embodiments are only preferred embodiments given to fully illustrate the present invention, and the protection scope of the present invention is not limited thereto. Equivalent substitutions or transformations made by those skilled in the art on the basis of the present invention are all within the protection scope of the present invention.

Claims

1. An elongated shaft grinding device with a pressing plate based on a loading and unloading bracket, characterized in that, It includes a centerless grinding machine. Feeding platforms are arranged in both the feeding and discharging directions of the centerless grinding machine. Multiple groups of cooperating driving modules are arranged on the feeding platforms. The driving module includes two driving wheels. The driving wheels are arranged on supports. The bottom of the support is fixed on the feeding platform through a lateral fine-tuning slide. Both of the two driving wheels are connected to a variable-speed driving motor. Two coarse-tuning slides are arranged at the bottom of the feeding platform. The coarse-tuning slides are connected to support feet through a first lifting assembly.

2. The slender shaft grinding device with a pressing plate based on a loading and unloading bracket according to claim 1, characterized in that, A material transfer support arm is arranged on one side of the driving module. The bottom of the material transfer support arm is connected to the feeding platform through a material supporting lifting cylinder.

3. The slender shaft grinding device with a pressing plate based on a loading and unloading bracket according to claim 1, characterized in that, An installation base plate is arranged at the bottom of the support. A rotating shaft is further arranged at the bottom of the installation base plate. The rotating shaft is arranged in a positioning hole on the lateral fine-tuning slide. An arc-shaped hole is also arranged on the installation base plate and is fixed on the lateral fine-tuning slide through a locking screw.

4. The slender shaft grinding device with a pressing plate based on a loading and unloading bracket according to claim 1, characterized in that, A loading bin is arranged on one side of the feeding platform in the feeding section of the centerless grinding machine. An unloading bin is arranged on one side of the feeding platform in the discharging section of the centerless grinding machine.

5. The slender shaft grinding device with a pressing plate based on a loading and unloading bracket according to claim 4, characterized in that, The loading bin includes a first support. A number of horizontal crossbeams are arranged on the first support. A first rotating feeding arm is arranged on one side of the horizontal crossbeam. One end of the first rotating feeding arm, which is located at one end of the feeding platform, is connected to the first support through a first rotating shaft, and the other end is connected to the first support through a first rotating cylinder. A number of first support arms are also arranged on the first support on the side of the feeding platform of the horizontal crossbeam. A limiting hook part is arranged at the end of the first support arm. A pressing plate is arranged above the first support arm. A single-piece feeding space is formed by the cooperation between the pressing plate and the first support arm. An upper feeding opening is formed between the limiting hook part and the end of the pressing plate. A second rotating feeding arm is arranged on one side of the upper feeding opening. The second rotating feeding arm is connected to the first support through a second rotating cylinder and a second rotating shaft.

6. The slender shaft grinding device with a pressure plate based on a loading and unloading bracket according to claim 5, characterized in that, A buffer arm is also arranged on one side of the upper feeding opening. The buffer arm is connected to the first support through a limiting shaft. A limiting adjusting arm is arranged at one end of the limiting shaft. Limiting adjusting screws are arranged on both sides of the limiting adjusting arm along the rotating direction. The limiting adjusting screws are arranged on a limiting support plate. The limiting support plate is fixed on the first support.

7. The slender shaft grinding device with a pressure plate based on a loading and unloading bracket according to claim 4, characterized in that, The pressing plate is arranged at the bottom of a lifting beam. Second lifting assemblies are arranged between both ends of the lifting beam and the first support.

8. The slender shaft grinding device with a pressure plate based on a loading and unloading bracket according to claim 7, characterized in that, A lifting support is arranged between the pressing plate and the lifting beam.

9. The slender shaft grinding device with a pressing plate based on a loading and unloading bracket according to claim 6, characterized in that, Polyurethane protection strips are arranged on the surfaces of the horizontal crossbeam, the first rotating feeding arm, and the buffer arm.

10. The slender shaft grinding device with a pressing plate based on a loading and unloading bracket according to claim 4, characterized in that, The unloading bin includes a second support. A number of material supporting beams are arranged on the second support. A curved section is arranged at the end of the material supporting beam on the side of the feeding platform. A material blocking arm is arranged on one side of the curved section. The material blocking arm is connected to the second support through a third rotating cylinder and a third rotating shaft.

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