Ratchet wrench surface grinding device

Abstract

The application relates to a ratchet wrench surface grinding device, which comprises a base provided with an elastic support frame, a grinding bin is arranged on the elastic support frame, the elastic support frame is used for providing elastic support for the grinding bin, two vibration exciting units are oppositely arranged on the elastic support frame, the vibration exciting units are used for driving the grinding bin to vibrate, the grinding bin is provided with a grinding groove for containing a wrench blank and grinding medium, one end of the grinding bin is provided with a discharge hopper, a plurality of filter holes are formed in the discharge hopper, the filter holes are used for filtering the grinding medium, and a circulating mechanism is arranged in the middle of the base. Through the arrangement of the grinding bin, the discharge hopper, the filter holes and the circulating mechanism, the filtered grinding medium can be sent into the grinding groove again, the waste of the grinding medium is reduced, the production cost is reduced, the labor cost caused by manual operation is reduced, and the stability and reliability of the production process are ensured.

Description

Technical Field

[0001] This application relates to the field of grinding technology, and in particular to a surface grinding device for a ratchet wrench. Background Technology

[0002] In the production process of ratchet wrenches, the main purpose of the surface grinding step is to remove burrs and scratches from the surface of the ratchet wrench, thereby improving the appearance quality and performance of the product.

[0003] Currently, in the ratchet wrench manufacturing industry, some companies use vibratory grinding machines to complete the surface grinding work. This equipment uses vibration to make the grinding media fully contact and rub against the wrench blank, thereby achieving the effect of removing burrs and scratches.

[0004] However, in the actual use of some existing vibratory grinders, when the grinding operation is completed and the material is discharged, the wrench blank and the grinding media are discharged from the equipment together. Subsequently, in order to achieve the recycling of the grinding media, the filtered grinding media needs to be sent back to the vibratory grinder. However, this process is mostly done manually. The staff needs to collect the filtered grinding media and send it back to the grinding tank of the vibratory grinder. This is not only inefficient and greatly increases the time cost in the production process, but also prone to spillage of grinding media during the handling process, resulting in material waste.

[0005] To address the aforementioned issues, a surface grinding device for ratchet wrenches is now designed. Utility Model Content

[0006] This application provides a ratchet wrench surface grinding device to solve the problem in the related art where, during actual use, the filtered grinding media of a vibratory grinder needs to be manually collected and returned to the grinding tank of the vibratory grinder.

[0007] In a first aspect, a ratchet wrench surface grinding device is provided, comprising: A base is provided with an elastic support frame, on which a grinding chamber is provided. The elastic support frame is used to provide elastic support for the grinding chamber. Two excitation units are arranged opposite to each other on the elastic support frame. The excitation units are used to drive the grinding chamber to vibrate. The grinding chamber has a grinding groove for accommodating a wrench blank and grinding media. The grinding chamber is provided with a discharge hopper at one end, and the discharge hopper is provided with a number of filter holes for filtering the grinding media. A circulation mechanism is provided in the middle of the base; The circulation mechanism includes a receiving unit arranged below the filter holes and a lifting mechanism connected to the receiving unit. The receiving unit is used to receive the filtered grinding media, and the lifting mechanism is used to lift the grinding media and send it into the grinding tank.

[0008] In some embodiments, the grinding chamber is provided with a discharge port, which is connected to the discharge hopper; Two slots are provided opposite each other on the discharge port, and a baffle is inserted between the two slots.

[0009] In some embodiments, the discharge hopper is U-shaped, and a plurality of the filter holes are arranged at equal intervals at the bottom of the discharge hopper.

[0010] In some embodiments, the receiving unit includes a funnel disposed below a filter hole and a delivery pipe communicating with the funnel, the other end of the delivery pipe being inclined downward.

[0011] In some embodiments, the lifting mechanism includes a housing, a spiral conveying rod rotatably disposed inside the housing, a drive motor disposed above the housing, the output shaft of the drive motor being connected to the top end of the spiral conveying rod, and a discharge pipe communicating with the top of the housing, the other end of the discharge pipe facing the grinding chamber; The other end of the delivery pipe is connected to the outer casing; The outer shell is cylindrical.

[0012] In some embodiments, the number of bases is two, and they are arranged opposite to each other; The elastic support frame includes multiple springs that are equidistantly arranged above the base, and a support plate is provided between the tops of the multiple springs; The grinding chamber is mounted on the support plate.

[0013] In some embodiments, the excitation unit includes two vibration motors, which are disposed opposite to each other on both sides of the bottom of the support plate.

[0014] This application provides a ratchet wrench surface grinding device. Through the cooperation of the grinding chamber, discharge hopper, filter hole and circulation mechanism, the filtered grinding media can be fed back into the grinding tank, reducing the waste of grinding media and lowering production costs. Compared with the traditional method that requires frequent manual addition of new grinding media, it not only improves production efficiency but also reduces the labor costs caused by manual operation, and ensures the stability and reliability of the production process.

[0015] The grinding chamber is driven to vibrate by the excitation unit, so that the wrench blank and the grinding media tumble and rub against each other in the grinding tank. This vibration grinding method can ensure that the grinding media acts evenly on all surfaces of the wrench blank, avoiding local over- or under-grinding, thereby improving the uniformity and quality of wrench surface grinding, effectively removing burrs and scratches, and making the wrench surface smoother and flatter. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A three-dimensional structural illustration provided for an embodiment of this application. Figure 1 ; Figure 2 A three-dimensional structural illustration provided for an embodiment of this application. Figure 2 ; Figure 3 A three-dimensional schematic diagram of the connection structure between the elastic support frame and the excitation unit provided in the embodiments of this application; Figure 4 This is a front sectional view provided for an embodiment of this application.

[0018] In the diagram: 1. Base; 2. Elastic support frame; 3. Grinding chamber; 4. Vibration unit; 5. Circulation mechanism; 6. Discharge hopper; 31. Grinding tank; 61. Filter hole; 51. Receiving unit; 52. Lifting mechanism; 32. Discharge port; 321. Slot; 7. Baffle; 511. Funnel; 512. Conveying pipe; 521. Outer shell; 522. Screw conveyor rod; 523. Drive motor; 524. Discharge pipe; 21. Spring; 22. Support plate. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] This application provides a ratchet wrench surface grinding device, which solves the problem in the related art that, in actual use, vibratory grinders require manual collection of filtered grinding media and its return to the grinding tank of the vibratory grinder.

[0021] Please see Figures 1-3 A ratchet wrench surface grinding device includes: a base 1, on which an elastic support frame 2 is disposed, a grinding chamber 3 is disposed on the elastic support frame 2, the elastic support frame 2 is used to provide elastic support for the grinding chamber 3, two excitation units 4 are disposed opposite to each other on the elastic support frame 2, the excitation units 4 are used to drive the grinding chamber 3 to vibrate, and the grinding chamber 3 has a grinding groove 31 for accommodating a wrench blank and grinding media; The grinding chamber 3 is provided with a discharge hopper 6 at one end. The discharge hopper 6 is provided with a plurality of filter holes 61, which are used to filter the grinding media. A circulation mechanism 5 is provided in the middle of the base 1; The circulation mechanism 5 includes a receiving unit 51 arranged below the filter hole 61 and a lifting mechanism 52 connected to the receiving unit 51. The receiving unit 51 is used to receive the filtered grinding media, and the lifting mechanism 52 is used to lift the grinding media and send it into the grinding tank 31.

[0022] The grinding media include grinding fluid and high-frequency ceramic abrasive particles (spherical).

[0023] The ratchet wrench blank requiring surface treatment is placed in the grinding tank 31 of the grinding chamber 3. Simultaneously, an appropriate amount of grinding media, comprising grinding fluid and high-frequency ceramic abrasive particles (spherical), is added to the grinding tank 31. The grinding fluid serves to lubricate, cool, and assist in grinding, while the high-frequency ceramic abrasive particles, due to their hardness and shape, grind the wrench surface by rubbing and colliding with the wrench blank, removing burrs and scratches.

[0024] When the excitation unit 4 is activated, it generates vibration, which is transmitted to the grinding chamber 3 through the elastic support frame 2. Under the action of vibration, the wrench blank and grinding media inside the grinding chamber 3 continuously tumble and rub against each other. This vibration allows the grinding media to act evenly on all surfaces of the wrench blank, achieving all-round grinding and improving grinding efficiency and effect.

[0025] When the grinding reaches the predetermined time or effect, the wrench blank and the grinding media are discharged together from the discharge hopper 6 at one end of the grinding chamber 3. During the discharge process, the high-frequency ceramic abrasive particles and grinding fluid in the grinding media can pass through several filter holes 61 opened on the discharge hopper 6, while the wrench blank cannot pass through the filter holes 61 due to its large size, thus achieving the initial separation of the wrench blank and the grinding media.

[0026] Subsequently, the receiving unit 51 receives the filtered grinding media, which includes grinding fluid and high-frequency ceramic abrasive particles. The receiving unit 51 then transports the grinding media to the lifting mechanism 52 connected to it. After the lifting mechanism 52 lifts the grinding media to a certain height, it is sent back into the grinding tank 31 for the next round of grinding operation, thus realizing the recycling of the grinding media.

[0027] By setting up the grinding chamber 3, the discharge hopper 6, the filter hole 61 and the circulation mechanism 5, the filtered grinding media can be fed back into the grinding tank 31, reducing the waste of grinding media, lowering production costs, and compared with the traditional method that requires frequent manual addition of new grinding media, it not only improves production efficiency but also reduces the labor costs caused by manual operation, ensuring the stability and reliability of the production process.

[0028] The vibration unit 4 drives the grinding chamber 3 to vibrate, causing the wrench blank and the grinding medium to tumble and rub against each other in the grinding groove 31. This vibration grinding method ensures that the grinding medium acts evenly on all surfaces of the wrench blank, avoiding local over- or under-grinding, thereby improving the uniformity and quality of wrench surface grinding, effectively removing burrs and scratches, and making the wrench surface smoother and flatter.

[0029] like Figure 1 and Figure 2 As shown, the grinding chamber 3 is further provided with a discharge port 32, which is connected to the discharge hopper 6; two slots 321 are provided opposite to each other on the discharge port 32, and a baffle 7 is inserted between the two slots 321.

[0030] Place the ratchet wrench blank into the grinding groove 31 of the grinding chamber 3, add an appropriate amount of grinding media, grinding liquid and high-frequency ceramic abrasive particles. At this time, the baffle 7 is inserted between the two slots 321 of the discharge port 32, completely sealing the discharge port 32.

[0031] Once the grinding reaches the predetermined time or effect, pull out the baffle 7 inserted between the outlet 32 ​​and slot 321, open the outlet 32, and the wrench blank and grinding media flow into the connected outlet hopper 5 through the outlet 32.

[0032] During the grinding process, the baffle 7 can remain closed to ensure that the grinding media and the wrench blank are fully ground in the grinding chamber 3.

[0033] Once grinding is complete, the operator can simply pull out the baffle 7 to quickly open the discharge port 32. The vibration unit 4 continues to work, driving the grinding media and blank to vibrate, and allowing the material to flow out smoothly through the discharge port 32, thus improving the convenience and accuracy of operation.

[0034] It should be noted that in this embodiment, the grinding chamber 3 is slightly tilted downwards at the end near the discharge port 32.

[0035] The grinding chamber is vibrated by the excitation unit 4, and the end of the grinding chamber 3 near the discharge port 32 is tilted downward to avoid residue inside the grinding chamber 3.

[0036] like Figure 1 and Figure 2 As shown, in one embodiment, the discharge hopper 6 is U-shaped, and a plurality of filter holes 61 are arranged at equal intervals at the bottom of the discharge hopper 6.

[0037] The U-shaped discharge hopper 6 increases the residence time and flow path of the material in the discharge hopper. Specifically, after the grinding media and wrench blank flow into the discharge hopper 6, the grinding media has more opportunities to fall through the filter holes 61 at the bottom, further improving the separation effect.

[0038] Several filter holes 61 are arranged at equal intervals at the bottom of the discharge hopper 6. This uniform distribution allows the grinding media to fall evenly through each filter hole 61 when it flows through the bottom of the discharge hopper 6. This avoids the problem of grinding media accumulating in some areas and poor filtration in some areas due to uneven distribution of filter holes, while filtration is too fast in some areas. This improves the uniformity and efficiency of filtration and ensures the effective separation of the grinding media from the wrench blank.

[0039] like Figure 3 and Figure 4 As shown, in one embodiment, the receiving unit 51 includes a funnel 511 disposed below the filter hole 61, and a conveying pipe 512 communicating with the funnel 511, the other end of the conveying pipe 512 being inclined downward.

[0040] The funnel 511 is wide at the top and narrow at the bottom, which can effectively collect the grinding media falling from each filter hole 61 and concentrate the scattered grinding media.

[0041] The grinding media collected in the funnel 511 is transported through the conveying pipe 512 connected to it. Since the other end of the conveying pipe 512 is inclined downward, the grinding media will slide naturally downward along the conveying pipe 512 under its own gravity and will eventually be transported into the lifting mechanism 52 for subsequent lifting and recycling.

[0042] The funnel 511 is arranged below the filter hole 61. Its structure, which is wider at the top and narrower at the bottom, allows it to cover a large area and effectively collect the grinding media falling from each filter hole 61, preventing the grinding media from scattering around the equipment and improving collection efficiency.

[0043] During the falling of the grinding media, splashing may occur due to its speed and impact. The presence of the funnel 511 can buffer and block the splashing of the grinding media, allowing more grinding media to be collected smoothly and further improving the integrity of the collection.

[0044] like Figure 3 and Figure 4 As shown, in one embodiment, the lifting mechanism 52 includes a housing 521, a spiral conveying rod 522 is rotatably disposed inside the housing 521, a drive motor 523 is disposed above the housing 521, the output shaft of the drive motor 523 is connected to the top end of the spiral conveying rod 522, and a discharge pipe 524 is connected above the housing 521, with the other end of the discharge pipe 524 facing the grinding chamber 3; The other end of the delivery pipe 512 is connected to the outer casing 521; The outer shell 521 is cylindrical.

[0045] The grinding media is conveyed into the housing 521 of the lifting mechanism 52 through the downwardly inclined conveying pipe 512.

[0046] Start the drive motor 523. The drive motor 523 runs and its output shaft drives the spiral conveyor rod 522, which is rotated inside the housing 521, to rotate. During the rotation, the spiral blades on the spiral conveyor rod 522 will continuously push the grinding medium that has entered the bottom of the housing 521 upward. As the spiral conveyor rod 522 continues to rotate, the grinding medium gradually rises along the spiral conveyor rod 522 until it is conveyed to the top discharge pipe 524 of the housing 521.

[0047] The grinding media coming out of the discharge pipe 524 returns to the grinding tank 31 of the grinding chamber 3 under the action of gravity, realizing the recycling of the grinding media and continuing to participate in the grinding process of new ratchet wrench blanks.

[0048] like Figure 3 and Figure 4 As shown, in this embodiment, there are two bases 1, which are arranged opposite to each other; The elastic support frame 2 includes multiple springs 21 that are equidistantly arranged above the base 1, and a support plate 22 is provided between the tops of the multiple springs 21; the grinding chamber 3 is arranged on the support plate 22.

[0049] Two opposing bases 1 provide a stable foundation for the entire device. Located on both sides of the device, they ensure that the device will not shake or shift during operation through their own weight and contact with the ground.

[0050] Multiple springs 21 of the elastic support frame 2 are equidistantly arranged above the base 1. When the equipment is not started, the springs 21 are in a natural state, and the support plate 22 is kept horizontal under the support of the springs 21. The grinding chamber 3 is placed stably on the support plate 22. At this time, the grinding chamber 3 and the grinding media and ratchet wrench blank inside it are in a relatively static initial state.

[0051] When the excitation unit 4 starts working and generates vibrations that are transmitted to the grinding chamber 3, the ratchet wrench blank inside the grinding chamber 3 begins to interact with the grinding medium, grinding fluid, and high-frequency ceramic abrasive particles to perform grinding. Due to the vibration, the grinding chamber 3 will produce small up-and-down and left-and-right movements. At this time, the elastic support frame 2 plays an important role in buffering and adapting. Multiple springs 21 will compress and extend accordingly according to the movement of the grinding chamber 3. When the grinding chamber 3 moves downward, the springs 21 are compressed and store elastic potential energy; when the grinding chamber 3 moves upward, the springs 21 extend and release elastic potential energy. The elastic deformation of the springs 21 can effectively absorb and buffer the impact force generated during the grinding process, reduce the transmission of vibration to the base 1 and the entire equipment, and ensure the stability of the equipment operation.

[0052] Meanwhile, under the action of the spring 21, the support plate 22 can float to a certain extent with the movement of the grinding chamber 3, always providing a relatively stable support platform for the grinding chamber 3, ensuring that the grinding process in the grinding chamber 3 can be carried out continuously and stably.

[0053] like Figure 3 and Figure 4 As shown, in one embodiment, the excitation unit 4 includes two vibration motors, which are arranged opposite to each other on both sides of the bottom of the support plate 22.

[0054] When the equipment is ready to start grinding, the vibration motor is started and powered on at the same time. The eccentric wheel inside the vibration motor starts to rotate at high speed under the drive of the motor.

[0055] Since the two vibrating motors are set opposite to each other, the centrifugal forces they generate are in opposite directions. At the initial moment, the centrifugal forces generated by the rotation of the eccentric blocks of the two motors are superimposed to form a resultant force perpendicular to the support plate 22 and directed downward. This resultant force quickly acts on the support plate 22, causing the support plate 22 to begin to accelerate downward. At the same time, the spring 21 in the elastic support frame 2 connected to the support plate 22 is compressed and stores elastic potential energy.

[0056] As the vibratory motor continues to rotate, the magnitude and direction of the centrifugal force generated by the two motor eccentric blocks will change continuously with the rotation of the eccentric blocks. Within a complete rotation cycle, the magnitude of the centrifugal force changes in a periodic sinusoidal manner.

[0057] When the eccentric blocks of the two vibrating motors rotate to a certain position, the components of the centrifugal force they generate in the horizontal direction cancel each other out, while the components in the vertical direction are superimposed on each other. This resultant force in the vertical direction changes continuously, causing the support plate 22 to perform simple harmonic motion up and down under the elastic action of the spring 21.

[0058] The vibration of the support plate 22 is directly transmitted to the grinding chamber 3 set on it. Under the vibration of the grinding chamber 3, the ratchet wrench blank, the grinding medium, the grinding fluid and the high-frequency ceramic abrasive particles in the grinding chamber 3 begin to generate relative motion. The grinding medium continuously impacts, rubs and cuts the surface of the ratchet wrench blank, thereby realizing the grinding process.

[0059] Due to the relative arrangement of the two vibration motors, the system has a certain self-balancing ability. The centrifugal force generated by the two vibration motors will be adjusted through interaction to keep the grinding chamber 3 in a stable vibration state as much as possible.

[0060] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0061] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0062] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A surface grinding device for a ratchet wrench, characterized in that, include: A base (1) is provided with an elastic support frame (2), and a grinding chamber (3) is provided on the elastic support frame (2). The elastic support frame (2) is used to provide elastic support for the grinding chamber (3). Two excitation units (4) are arranged opposite to each other on the elastic support frame (2). The excitation units (4) are used to drive the grinding chamber (3) to vibrate. The grinding chamber (3) has a grinding groove (31) for accommodating the wrench blank and the grinding medium. The grinding chamber (3) is provided with a discharge hopper (6) at one end. The discharge hopper (6) is provided with a plurality of filter holes (61) for filtering the grinding media. A circulation mechanism (5) is provided in the middle of the base (1); The circulation mechanism (5) includes a receiving unit (51) arranged below the filter hole (61) and a lifting mechanism (52) connected to the receiving unit (51). The receiving unit (51) is used to receive the filtered grinding media, and the lifting mechanism (52) is used to lift the grinding media and send it into the grinding tank (31).

2. The ratchet wrench surface grinding device as described in claim 1, characterized in that: The grinding chamber (3) is provided with a discharge port (32), which is connected to the discharge hopper (6); Two slots (321) are opened opposite each other on the discharge port (32), and a baffle (7) is inserted between the two slots (321).

3. The ratchet wrench surface grinding device as described in claim 1, characterized in that: The discharge hopper (6) is U-shaped, and a number of filter holes (61) are arranged at equal intervals at the bottom of the discharge hopper (6).

4. The ratchet wrench surface grinding device as described in claim 1, characterized in that: The receiving unit (51) includes a funnel (511) arranged below the filter hole (61) and a delivery pipe (512) communicating with the funnel (511), the other end of the delivery pipe (512) being inclined downward.

5. The ratchet wrench surface grinding device as described in claim 4, characterized in that: The lifting mechanism (52) includes a housing (521), inside which a spiral conveying rod (522) is rotatably arranged. A drive motor (523) is arranged above the housing (521). The output shaft of the drive motor (523) is connected to the top end of the spiral conveying rod (522). A discharge pipe (524) is connected above the housing (521), and the other end of the discharge pipe (524) faces the grinding chamber (3). The other end of the delivery pipe (512) is connected to the outer casing (521); The outer shell (521) is cylindrical.

6. The ratchet wrench surface grinding device as described in claim 1, characterized in that: The number of bases (1) is two, and they are arranged opposite to each other; The elastic support frame (2) includes a plurality of springs (21) evenly spaced above the base (1), and a support plate (22) is provided between the tops of the plurality of springs (21). The grinding chamber (3) is mounted on the support plate (22).

7. The ratchet wrench surface grinding device as described in claim 6, characterized in that: The excitation unit (4) includes two vibration motors, which are arranged opposite each other on both sides of the bottom of the support plate (22).

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