A device for grinding burrs on the surface of a box tie rod

Abstract

The present invention relates to a burr grinding device for the surface of a box-mounted pull rod, and belongs to the technical field of burr grinding devices. The present invention includes a frame, a sliding body, an adjustment component and a grinding mechanism. The frame is provided with a clamping and positioning mechanism, and the sliding body is movably installed on the frame left and right. The sliding body is provided with a limit slide, and a slider is inserted in each limit slide; the adjustment component includes four round rods, each round rod is connected to each slider, and an elastic telescopic rod is connected between any two adjacent round rods; the grinding mechanism includes a retractable component, a first grinding belt and a telescopic support rod, and the retractable component includes a support, two fixed rollers and a movable roller installed on the support through an up and down guiding slide, and a first elastic member is connected between the guide slide and the support, and the first elastic member applies a downward elastic force to the guide slide. The present invention has a wide range of application and high state switching efficiency, and can effectively remove burrs on the surface of the pull rod.

Description

Technical Field

[0001] The invention relates to the technical field of burr grinding devices, and in particular to a burr grinding device for the surface of a box-mounted pull rod. Background Art

[0002] The telescopic pull rod of a suitcase is an important part of the suitcase, and its design and manufacturing directly affect the user experience. One of the common problems of the telescopic pull rod is the surface burr. The burr on the outer surface of the pull rod will affect the overall appearance of the suitcase and may scratch the user, posing a safety hazard. The burr on the inner surface of the pull rod will affect the sliding smoothness and overall texture of the pull rod. Therefore, how to effectively remove the burr on the surface of the pull rod is an issue that needs to be carefully considered during the pull rod manufacturing process.

[0003] In the prior art, burrs on the surface of the tie rod are generally removed by a tie rod grinding device. For example, a patent with authorization announcement number CN216097896U discloses a grinding device for luggage tie rod processing. The device includes a box body, a tie rod is arranged inside the box body, a telescopic column is rotatably connected to the bottom of the box body through a bearing, a fixed plate is fixedly connected to the top of the telescopic column, the fixed plate and the tie rod are fixedly installed by bolts, a water tank and an extrusion box are fixedly connected to the inner wall of the box body, and the outer wall of the water tank is fixedly connected to the outer wall of the extrusion box, and a lifting and rotating grinding mechanism and a clamping mechanism are arranged inside the box body.

[0004] When the device is in use, the two clamping blocks in the clamping mechanism clamp the rod to be polished, and the lifting and rotating polishing mechanism drives the rod to move up and down while rotating, so that the two clamping blocks polish the burrs on the outer surface of the rod. The device can also polish rods of different sizes by adjusting the distance between the two clamping blocks. However, the device can only polish the outer wall of the rod, but not the inner wall of the rod.

[0005] In order to grind the inner wall of the tie rod, a grinding block is usually inserted into the inside of the tie rod and reciprocated inside the tie rod to remove the burrs on the inner wall of the tie rod. In the prior art, the structure of the equipment used to grind the inside of the tie rod is similar to a slag cleaning device for square tubes disclosed in the patent with authorization announcement number CN210550264U, which drives the grinding disc to move inside the square tube by a motor, thereby removing the rust residue on the inner wall of the square tube. However, if the device is used to grind the inner wall of the tie rod, when the size of the processed tie rod changes, it is necessary to replace the grinding disc of different sizes to adapt to the new tie rod. There are many steps to replace the grinding disc, which takes a long time. The flexibility of the device to switch between different processing states is poor, which will affect the production efficiency during mass production. Summary of the invention

[0006] The present invention provides a device for grinding burrs on the surface of a box-mounted pull rod, so as to solve the technical problem that the pull rod burr grinding equipment in the prior art needs to manually replace the grinding disc when grinding the inner walls of pull rods of different sizes, resulting in a long switching time and reduced overall production efficiency of the equipment.

[0007] In order to solve the above problems, the present invention provides a device for grinding burrs on the surface of a box tie rod, which adopts the following technical solution:

[0008] A device for grinding burrs on the surface of a box-mounted pull rod comprises a frame, a clamping and positioning mechanism for clamping the pull rod is provided on the frame, and further comprises:

[0009] The sliding body is installed on the frame so as to be movable left and right. The sliding body is provided with four radially distributed limiting sliding grooves. Each limiting sliding groove is provided with a sliding block which is fixed to the left and right sides and prevents the sliding from falling off.

[0010] The adjusting assembly is opposite to the clamping area of ​​the clamping positioning mechanism, and includes four round rods extending left and right and distributed in a square shape, each round rod is connected to each slider on the sliding body and is located on the side of the slider facing the clamping positioning mechanism, and an elastic telescopic rod is connected between any two adjacent round rods;

[0011] The grinding mechanism includes a retractable assembly, a first grinding belt mounted on one end of the four round rods in the adjusting assembly facing away from the sliding body, and a telescopic support rod connected between two adjacent round rods at the top of the adjusting assembly. The retractable assembly includes a support member fixed in the upper and lower positions and arranged on the inner side of the first grinding belt, two fixed rollers extending left and right and guided and slidably installed on the telescopic support rod along the rod length direction of the telescopic support rod, and a movable roller connected to the guide slider and guided and slidably installed on the support member through the guide slider. A first elastic member is connected between the guide slider and the support member, and the first elastic member applies a downward elastic force to the guide slider, driving the movable roller to press the part of the first grinding belt located between the two fixed rollers from top to bottom to below the fixed roller, so that the first grinding belt is tensioned on the outer sides of the four round rods and the two fixed rollers.

[0012] By adopting the above technical scheme, since the first grinding belt in the grinding mechanism is pressed by the movable roller, by pushing the multiple round rods in the adjusting component closer to each other, the first grinding belt wrapped around the outside of the round rod will automatically gather on the outside of the gathered round rod, so that the first grinding belt can be adapted to be inserted into the inner side of the pull rod to be polished, and under the action of the elastic telescopic rod, it is pressed on the inner wall of the pull rod to remove the burrs on the inner wall of the pull rod. The grinding mechanism can be suitable for grinding pull rods of different sizes. When replacing pull rods of different specifications and sizes for processing, there is no need to replace a new grinding mechanism. Only the adjusting component needs to be adjusted to change the size of the grinding mechanism. The switching efficiency is higher and the adaptability is stronger. In the mass production process, the production efficiency can be effectively improved.

[0013] Furthermore, the round rod is rotatably connected to the slider, both ends of the elastic telescopic rod are rotatably mounted on the corresponding round rods, both ends of the telescopic support rod are rotatably mounted on the corresponding round rods, and a rotating driving member is provided on the sliding body. The rotating driving member is transmission-connected to one of the round rods in the adjusting assembly, and the rotating driving member drives the round rod to rotate and drives the first grinding belt to rotate.

[0014] By adopting the above technical solution, the rotating driving member can drive the round rod to rotate, thereby driving the first grinding belt to rotate. The first grinding belt rotates to grind the inner wall of the pull rod, which can effectively improve the grinding efficiency and achieve a better effect of removing burrs.

[0015] Furthermore, the frame is also provided with an adjusting drive member, which has a driving output end capable of moving toward or away from the round rods in the adjusting assembly in a vertical plane, and the driving output end of the adjusting drive member is connected to a push block, and the adjusting drive member can drive the push block to push the round rods in the adjusting assembly so that the four round rods are retracted toward the middle.

[0016] By adopting the above technical solution, the state of the adjustment component is automatically adjusted by adjusting the driving member, and manual adjustment is unnecessary, thereby improving the adjustment efficiency.

[0017] Furthermore, a support body is provided on the frame, and the support body is located between the sliding body and the grinding mechanism, and the support body is used for four round rods in the adjustment component to pass through left and right.

[0018] The two guide wheels are fixedly mounted on the support member, and the two guide wheels are fixedly mounted on the support member, wherein the two guide wheels are fixedly mounted on the support member, and the two guide wheels are fixedly mounted on the support member, wherein the two guide wheels are fixedly mounted on the support member, and the two guide wheels are fixedly mounted on the support member, and the two guide wheels are fixedly mounted on the support member,

[0019] By adopting the above technical solution, when the adjusting rod moves toward the clamping and positioning mechanism as the sliding body moves, the adjusting rod is pushed by the two fixed top blocks and swings back and forth, driving the supporting member to swing back and forth, and the supporting member drives the movable member to swing back and forth, and the movable member drives the two fixed rollers to move back and forth, so that the position of the concave area of ​​the first grinding belt between the two fixed rollers is constantly changing, which can ensure that all places on the top inner wall of the pull rod can be polished clean, avoiding the occurrence of grinding dead corners.

[0020] Furthermore, the clamping and positioning mechanism includes a first clamping drive member and a second clamping drive member arranged relatively to each other up and down, and an outer wall grinding assembly and a support plate respectively connected to the driving output end of the first clamping drive member and the driving output end of the second clamping drive member. The first clamping drive member and the second clamping drive member are used to drive the outer wall grinding assembly and the support plate to move closer to or away from each other to clamp or release the pull rod to be ground.

[0021] By adopting the above technical solution, the clamping and positioning mechanism includes an outer wall grinding component, which can not only clamp and position the pull rod, but also remove burrs on the outer surface of the pull rod. It integrates multiple functions in one, can reduce equipment costs, and improve the flexibility of equipment use.

[0022] Furthermore, the first clamping drive member is installed on the frame so as to be movably mounted left and right, and the outer wall grinding assembly includes a frame connected to the driving output end of the first clamping drive member, a second grinding belt installed at the bottom of the frame, and a grinding drive member installed on the frame and transmission-connected to the second grinding belt to drive the second grinding belt to rotate in the front and rear directions.

[0023] Furthermore, the frame includes a support plate connected to the driving output end of the first clamping driving member and a bracket elastically and movably connected to the support plate up and down, and the second grinding belt is installed at the bottom of the bracket; the sliding body includes a sliding main body and a rotating body installed on the sliding main body and rotatable around a rotation axis extending left and right, the limiting slide groove is opened on the rotating body, and a rotating body driving member is installed on the sliding main body, which is connected to the rotating body to drive the rotating body to rotate, and drive the adjusting assembly and the grinding mechanism to rotate.

[0024] By adopting the above technical solution, the grinding mechanism can rotate. After the grinding mechanism is inserted into the inner side of the pull rod and tensioned on the inner wall of the pull rod, it can drive the pull rod to rotate. When grinding a square pull rod, the pull rod can be rotated while the first clamping drive part moves left and right, driving the second grinding belt to move left and right to grind the outer wall of the rotating pull rod. In this way, the burrs on the edges of the pull rod can be polished clean, and the effect of removing the burrs on the outer wall of the pull rod is better.

[0025] The beneficial effect of a burr grinding device for the surface of a box-mounted pull rod provided by the present invention is that the adjustment component can adjust the external dimensions of the first grinding belt in the grinding mechanism, so that the first grinding belt can be suitable for grinding the inner wall of pull rods of different specifications and sizes. When switching to pull rods of different specifications and sizes for processing, there is no need to replace the grinding mechanism, and only the adjustment component needs to be adjusted. The size switching efficiency of the grinding mechanism is higher, and the production efficiency can be effectively improved during mass production. The two fixed rollers can move back and forth to ensure that the burrs on the top inner wall of the pull rod can be polished clean, effectively avoiding the occurrence of grinding dead corners. The grinding component can drive the pull rod to rotate, and the second grinding belt can move left and right. The second grinding belt can grind the outer wall of the pull rod during the rotation of the pull rod, which can effectively grind off the burrs on the outer edges of the pull rod, and the burr removal effect on the outer wall of the pull rod is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] By reading the following detailed description with reference to the accompanying drawings, the above and other objects, features and advantages of the exemplary embodiments of the present invention will become readily understood. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0027] Figure 1 A schematic diagram of a structure of a box-mounted pull rod surface burr grinding device provided by the present invention Figure 1 ;

[0028] Figure 2 A schematic diagram of a structure of a box-mounted pull rod surface burr grinding device provided by the present invention Figure 2 ;

[0029] Figure 3 for Figure 2 A schematic diagram of the structure enlargement at the center A;

[0030] Figure 4 A schematic diagram of a structure of a box-mounted pull rod surface burr grinding device provided by the present invention Figure 3 ;

[0031] Figure 5 A schematic diagram of a structure of a box-mounted pull rod surface burr grinding device provided by the present invention Figure 4 ;

[0032] Figure 6 for Figure 5 A schematic diagram of the structure enlarged at B in the middle;

[0033] Figure 7 A schematic diagram of the structure of the adjustment assembly and the grinding mechanism in a box-mounted pull rod surface burr grinding device provided by the present invention Figure 1 ;

[0034] Figure 8 A schematic diagram of the structure of the adjustment assembly and the grinding mechanism in a box-mounted pull rod surface burr grinding device provided by the present invention Figure 2 ;

[0035] Fig. 9 A cross-sectional view of a grinding mechanism in a box-mounted pull rod surface burr grinding device provided by the present invention Figure 1 ;

[0036] Fig.10 A cross-sectional view of a grinding mechanism in a box-mounted pull rod surface burr grinding device provided by the present invention Figure 2 ;

[0037] Fig.11 A schematic diagram of the structure of a rotating block in a box-mounted pull rod surface burr grinding device provided by the present invention;

[0038] Fig.12 A schematic diagram of the structure of a retractable assembly in a box-mounted pull rod surface burr grinding device provided by the present invention.

[0039] Description of reference numerals:

[0040] 1. Frame; 101. Installation box; 102. Base; 103. Guide slide; 104. Bottom slide; 105. Installation chamber; 2. First clamping drive member; 3. Pull rod; 4. Slide block; 5. Support plate; 6. Slide rod; 7. Second elastic member; 8. Bracket; 9. Second grinding belt; 10. Limit plate; 11. Rotating body; 111. Limit slide; 12. Sliding body; 13. Round rod; 14. Adjustment rod; 141. Movable top block; 15. Support plate; 16. Support body; 17. Rotating block; 171. Perforation; 18, adjusting drive member; 19, pushing block; 20, grinding drive member; 21, sliding block; 22, short elastic telescopic rod; 23, second clamping drive member; 24, first grinding belt; 25, telescopic support rod; 26, supporting member; 27, driven gear; 28, rotating body drive member; 29, rotating drive member; 30, movable roller; 31, movable member; 311, long strip hole; 32, first elastic member; 33, fixed roller; 34, fixed top block; 35, guide slider; 36, long elastic telescopic rod; 37, slide plate. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0042] The following is one embodiment of a device for grinding burrs on the surface of a box tie rod provided by the present invention:

[0043] like Figure 1 , Figure 2 As shown, a burr grinding device for the surface of a box-mounted pull rod includes a frame 1, a clamping and positioning mechanism, a sliding body, a supporting body, a rotating body driving member 28, an adjusting component, a grinding mechanism, a rotating driving member 29, an adjusting rod 14 and an adjusting driving member 18.

[0044] like Figure 1 , Figure 2 As shown, the rack 1 is arranged on a horizontal ground, and the rack 1 includes a base 102 and an installation box 101 connected to the top of the base 102, the installation box 101 is provided with an installation chamber 105 extending left and right, the middle of the top box wall of the installation box 101 is provided with a guide slide 103 extending left and right, and the bottom box wall of the installation box 101 is provided with two groups of bottom slides 104 extending left and right and arranged at intervals left and right, and the bottom slide 104 is provided with a guide rod extending left and right.

[0045] like Figure 1 , Figure 2 As shown, the clamping and positioning mechanism is installed in the middle of the frame 1, and the clamping and positioning mechanism includes a first clamping drive member 2, a second clamping drive member 23, a support plate 15 and an outer wall grinding assembly.

[0046] The first clamping drive member 2 adopts a linear cylinder, which has a piston rod end that extends into the installation chamber 105 and can move up and down. The piston rod end is the drive output end of the first clamping drive member 2. The cylinder body of the linear cylinder is connected to a sliding block 4, which is slidably inserted in the above-mentioned guide slot 103, so that the first clamping drive member 2 is installed on the frame 1 so that it can move left and right. A sliding drive member for pushing the sliding block 4 to move left and right is also provided on the top box wall of the installation box 101. The sliding drive member adopts a horizontally arranged linear cylinder. The sliding drive member has a drive output end that can move left and right. The sliding block 4 is connected to the drive output end of the sliding drive member. The sliding drive member is not shown in the figure.

[0047] like Figure 4 As shown, the second clamping drive member 23 is fixedly mounted on the base 102 . The second clamping drive member 23 also adopts a linear cylinder having a piston rod end extending into the installation chamber 105 and capable of moving up and down. The piston rod end is the driving output end of the second clamping drive member 23 .

[0048] like Figure 1 , Figure 2 As shown, the support plate 15 is arranged horizontally and extends in the left-right direction, and the support plate 15 is connected to the driving output end of the second clamping driving member 23 .

[0049] like Figure 2 As shown, the outer wall grinding assembly is installed on the driving output end of the first clamping driving member 2, and the outer wall grinding assembly includes a frame, a second grinding belt 9 and a grinding driving member 20.

[0050] The frame is connected to the driving output end of the first clamping driving member 2 , and the frame includes a supporting plate 5 and a bracket 8 .

[0051] The support plate 5 is arranged horizontally and fixedly connected to the driving output end of the first clamping driving member 2. The bracket 8 is in an inverted U shape. The bracket 8 is located below the support plate 5. Two slide bars 6 are vertically connected to the top surface of the bracket 8. The top of the slide bar 6 is connected to the limit plate 10. The two slide bars 6 are movably arranged on the support plate 5. A second elastic member 7 is connected between the limit plate 10 and the support plate 5. The second elastic member 7 is sleeved on the part of the slide bar 6 located above the support plate 5. The inner cavity of the bracket 8 is rotatably installed with a driving pulley and a driven pulley arranged in a front-to-back spacing and with the rotation axis extending in the left-right direction.

[0052] The second grinding belt 9 is sleeved on the outer sides of the driving pulley and the driven pulley, and the bottom surface of the second grinding belt 9 is lower than the bottom surface of the bracket 8 .

[0053] The grinding drive member 20 is fixedly mounted on the bracket 8. The grinding drive member 20 adopts a motor. The output shaft end of the motor is transmission-connected with the driving pulley to drive the driving pulley to rotate, thereby driving the second grinding belt 9 to rotate.

[0054] like Figure 1 , Figure 2 As shown, there are two sliding bodies, both of which are located in the installation chamber 105 and are respectively arranged on the left and right sides of the clamping and positioning mechanism. The sliding body includes a sliding body 12 and a rotating body 11.

[0055] like Figure 1 , Figure 7 , Figure 8 As shown, the sliding body 12 is plate-shaped, and a slide plate 37 is connected to the bottom end of the sliding body 12. The slide plate 37 is inserted into the bottom slide groove 104 on the corresponding side of the installation box 101, and is slidably mounted on the guide rod in the bottom slide groove 104, so that the sliding body can slide left and right on the rack 1. A sliding drive member for driving the sliding body to slide left and right is installed on the bottom box wall of the installation box 101. The sliding drive member adopts a horizontally arranged linear cylinder. The sliding drive member has a driving output end that can move left and right. The sliding body 12 is connected to the driving output end of the sliding drive member. The sliding drive member is not shown in the figure.

[0056] like Figure 3As shown, the rotating body 11 is disc-shaped and can rotate around a rotation axis extending left and right and is embedded in the middle of the sliding body 12. The rotating body 11 is provided with four radially distributed limiting grooves 111, and the four limiting grooves 111 are arranged in a rectangular shape. The cross-section of the limiting groove 111 is T-shaped, and a T-shaped slider 21 is inserted in each limiting groove 111. The T-shaped slider 21 cannot rotate in the limiting groove 111 and will not fall off from the limiting groove 111 in the left and right directions. Figure 1 , Figure 8 As shown, a driven gear 27 is coaxially fixedly connected to the side of the rotating body 11 facing away from the clamping and positioning mechanism.

[0057] like Figure 1 As shown, there are two rotating body driving members 28, and the two rotating body driving members 28 are respectively connected to the two sliding bodies 12 to drive the two rotating bodies 11 to rotate. The rotating body driving member 28 adopts a motor, and the rotating body driving member 28 is fixedly installed on the sliding body 12 and is located on the side of the sliding body 12 that is away from the clamping and positioning mechanism. The driving output end of the rotating body driving member 28 is connected to a driving gear, and the driving gear is meshed with the above-mentioned driven gear 27. When the rotating body driving member 28 drives the driving gear to rotate, it drives the driven gear 27 to rotate, thereby driving the rotating body 11 to rotate.

[0058] like Figure 1 , Figure 2 As shown, the support body is provided with two pieces, both of which are located in the installation chamber 105 and are respectively arranged on the left and right sides of the clamping and positioning mechanism, and each support body is located between the sliding body and the clamping and positioning mechanism on the corresponding side. The support body includes a support body 16 and a rotating block 17, the support body 16 is in the shape of a plate, and the rotating block 17 is in the shape of a disc. The bottom of the support body 16 is connected with a slide plate 37, which is inserted in the bottom slide groove 104 and slidably sleeved on the guide rod in the bottom slide groove 104, so that the support body 16 is installed on the frame 1 in a left and right movable manner. The support body 16 is located on the side of the corresponding bottom slide groove 104 close to the clamping and positioning mechanism, and a third elastic member is connected between the support body 16 and the groove wall surface of the bottom slide groove 104 close to the clamping and positioning mechanism, and the third elastic member is a tension spring, and the third elastic member is sleeved on the guide rod.

[0059] The rotating block 17 is coaxial with the rotating body 11 and can be rotatably embedded in the middle of the supporting body 16. Fig.11 As shown, the rotating block 17 is provided with a through hole 171 running through the left and right sides, and a fixed top block 34 is respectively provided on the front and rear hole walls of the through hole 171. The two fixed top blocks 34 are symmetrical front and back, and the fixed top blocks 34 have two symmetrical pushing inclined surfaces on the left and right sides, and the two pushing inclined surfaces approach each other along the direction toward the middle of the through hole 171.

[0060] like Figure 1As shown, there are two groups of adjustment components, which are arranged symmetrically on the left and right and are respectively connected to two rotating bodies 11. The adjustment components include a round rod 13 and an elastic telescopic rod.

[0061] like Figure 1 , Figure 2 , Figure 3 As shown, there are four round rods 13 in the adjustment assembly, and the four round rods 13 extend in the left-right direction. The ends of the four round rods 13 facing away from the clamping and positioning mechanism are respectively rotatably mounted on four sliders 21 on the rotating body 11 on the corresponding side, and the ends of the four round rods 13 facing the clamping and positioning mechanism pass through the rotating block 17 on the corresponding side and extend to the side of the rotating block 17 close to the clamping and positioning mechanism.

[0062] like Figure 3 , Figure 6 As shown, there are multiple elastic telescopic rods, which can be divided into three groups of elastic telescopic rods, each of which includes two long elastic telescopic rods 36 arranged at intervals in the upper and lower parts and two short elastic telescopic rods 22 arranged at intervals in the front and back parts. The three groups of elastic telescopic rods are distributed on the four round rods 13 at intervals in the left and right parts, wherein one end of the four round rods 13 close to the rotating body 11 is provided with one group of elastic telescopic rods, and one end of the four round rods 13 facing away from the corresponding rotating body 11 is provided with two groups of elastic telescopic rods arranged at intervals in the left and right parts, and the two groups of elastic telescopic rods are located on one side of the corresponding rotating block 17 close to the clamping and positioning mechanism.

[0063] The connection mode of the elastic telescopic rod group on the round rod 13 is as follows: two long elastic telescopic rods 36 extend forward and backward and are respectively connected between the two round rods 13 at the top and the two round rods 13 at the bottom, and two short elastic telescopic rods 22 extend upward and downward and are respectively connected between the two round rods 13 at the front and the two round rods 13 at the rear. The two ends of each elastic telescopic rod are respectively rotatably mounted on the corresponding round rod 13, and the elastic telescopic rod does not affect the rotation of the round rod 13. By pushing any one round rod 13 toward the inner side of the four round rods 13, the four round rods 13 can be driven to be synchronously retracted toward the middle.

[0064] like Figure 6-Figure 10 As shown, there are two groups of grinding mechanisms, which are respectively connected to two groups of adjustment components. The grinding mechanisms include a telescopic support rod 25, a first grinding belt 24 and a retractable component.

[0065] like Figure 6-Figure 8As shown, two telescopic support rods 25 are provided, and both of the telescopic support rods 25 extend in the front-to-back direction and are arranged at intervals from left to right. Both telescopic support rods 25 are connected between the two round rods 13 at the top of the adjustment assembly, and between the two sets of elastic telescopic rod groups at one end of the round rod 13 close to the clamping and positioning mechanism. The two ends of the telescopic support rod 25 are respectively rotatably mounted on the corresponding round rod 13 without affecting the rotation of the round rod 13.

[0066] The first grinding belt 24 is located between the two telescopic support rods 25 and is sleeved on the outer sides of the four round rods 13 .

[0067] like Fig. 9 , Fig.10 , Fig.12 As shown, the retracting and unfolding assembly includes a support member 26 , a movable member 31 , a fixed roller 33 and a movable roller 30 .

[0068] The support member 26 is fixedly arranged at the inner side of the four round rods 13 and located between the two telescopic support rods 25 , and a groove with an opening facing upward is formed in the support member 26 .

[0069] The movable member 31 is inserted into the groove on the support member 26 so as to be movable up and down. The front and rear outer surfaces of the movable member 31 fit with the front and rear inner walls of the groove, so that the movable member 31 and the support member 26 are relatively fixed in the front and rear direction. There is a gap between the left outer surface of the movable member 31 and the left groove wall of the groove in the support member 26, and there is a gap between the right outer surface of the movable member 31 and the right groove wall of the groove in the support member 26. These two gap areas form two sliding spaces. A receiving groove with an opening facing upward is provided in the movable member 31, and corresponding long strip holes 311 are provided on the left and right walls of the movable member 31.

[0070] There are two fixed rollers 33, both of which extend in the left-right direction and are arranged at intervals in the front and back. Both of the fixed rollers 33 are rotatably installed on the top of the movable part 31 and are located between the two telescopic support rods 25. The two ends of the fixed rollers 33 are respectively slidably assembled on the two telescopic support rods 25.

[0071] The first grinding belt 24 is also sleeved on the outer sides of the two fixed rollers 33 , and the first grinding belt 24 is used to grind the inner side wall of the pull rod 3 .

[0072] The movable roller 30 extends in the left-right direction. The movable roller 30 is located in the receiving groove and directly below the area between the two fixed rollers 33. The left and right ends of the movable roller 30 pass through the two long holes 311 in the movable member 31 and are each connected to a guide slider 35. The two guide sliders 35 are respectively inserted in the two sliding spaces for upward and downward movement. The two ends of the movable roller 30 are rotatably mounted on the two guide sliders 35. A first elastic member 32 is connected between the guide slider 35 and the bottom groove wall of the groove in the support member 26. The first elastic member 32 is a tension spring. The first elastic member 32 applies a downward elastic force to the movable roller 30, so that the movable roller 30 is pressed above the portion of the first grinding belt 24 between the two fixed rollers 33.

[0073] When the four round rods 13 in the adjustment assembly are retracted toward the middle, each elastic telescopic rod is compressed, and the first elastic member 32 is reset to drive the movable roller 30 to move downward, so that the portion of the first grinding belt 24 located between the two fixed rollers 33 is pulled downward longer, so that the first grinding belt 24 can still be pressed against the four round rods 13 after being retracted.

[0074] like Figure 1 , Figure 8 As shown, the rotary drive member 29 is provided with two parts, and the rotary drive member 29 adopts a motor. The two rotary drive members 29 are respectively mounted on two driven gears 27 and are located on the side of the driven gear 27 facing away from the sliding body. The rotary drive member 29 is guided and slidably assembled on the driven gear 27 along the extension direction of one of the limiting slide grooves 111 in the rotating body 11. The driving output end of the rotary drive member 29 passes through the driven gear 27 and the rotating body 11 and is connected to the round rod 13 on the slider 21 connected to the corresponding limiting slide groove 111. The rotary drive member 29 is used to drive the round rod 13 to rotate, thereby driving the first grinding belt 24 sleeved on the outside of the round rod 13 to rotate.

[0075] like Figure 1 , Figure 2 As shown, there are two adjusting rods 14, both of which extend in the left-right direction and are arranged symmetrically. The two adjusting rods 14 are respectively located on the inner sides of the four round rods 13 in the two groups of adjusting components. Figure 7 , Figure 8 As shown, one end of the adjusting rod 14 facing away from the clamping and positioning mechanism is inserted into the rotating body 11 on the corresponding side in a forward and backward motion, and the specific insertion method is as follows: one end of the adjusting rod 14 facing away from the clamping and positioning mechanism is T-shaped, and a slot extending forward and backward and having a T-shaped cross section is provided in the middle of the rotating body 11, and the T-shaped end of the adjusting rod 14 is inserted into the slot, so that the adjusting rod 14 is connected to the rotating body 11 in a left-right anti-slip connection. One end of the adjusting rod 14 facing away from the rotating body 11 is fixedly connected to the above-mentioned support member 26, so that the support member 26 is fixedly arranged in the corresponding four round rods 13 in the upper and lower positions.

[0076] A plurality of movable top blocks 141 are arranged at equal intervals on the front side wall and the rear side wall of the adjusting rod 14. The plurality of movable top blocks 141 on the front side wall of the adjusting rod 14 and the plurality of movable top blocks 141 on the rear side wall of the adjusting rod 14 are staggered left and right. Each movable top block 141 has two symmetrical sliding inclined surfaces, and the two sliding inclined surfaces on the movable top block 141 are close to each other in the direction away from the adjusting rod 14. The adjusting rod 14 is inserted into the through hole 171 on the rotating block 17. When the adjusting rod 14 moves left and right with the sliding body, the two fixed top blocks 34 in the through hole 171 push the plurality of movable top blocks 141 on the adjusting rod 14 alternately and sequentially, so that the adjusting rod 14 moves back and forth in the front and rear directions, driving the support member 26, the movable member 31 and the two fixed rollers 33 to move back and forth.

[0077] like Figure 1 , Figure 2 , Figure 5 As shown, there are two groups of adjusting drive members 18, and the two groups of adjusting drive members 18 are respectively connected to the two supporting bodies 16. The adjusting drive members 18 are arranged on the frame 1 by being connected to the supporting bodies 16. The adjusting drive members 18 are located on the side of the supporting body 16 close to the clamping and positioning mechanism and below the adjusting assembly. The adjusting drive members 18 use linear cylinders, and the adjusting drive members 18 have a driving output end that can be raised and lowered. A push block 19 is connected to the driving output end of the adjusting drive member 18, and the push block 19 abuts against the bottom of the two round rods 13 at the bottom of the corresponding adjusting assembly. The adjusting drive member 18 is used to drive the push block 19 to push the round rod 13 so that the four round rods 13 in the adjusting assembly are gathered toward the middle, thereby adjusting the external dimensions of the grinding mechanism.

[0078] When the present invention is in use, the clamping and positioning mechanism is first used to clamp the pull rod 3 to be polished, so that the pull rod 3 is clamped between the support plate 15 and the second polishing belt 9, and then the adjusting drive member 18 drives the push block 19 to move toward the round rod 13, so that the four round rods 13 in the adjustment assembly are gathered toward the middle, and at the same time, the elastic telescopic rod contracts, and the external size of the first polishing belt 24 becomes smaller, so that the first polishing belt 24 can be inserted into the interior of the pull rod 3 to be polished. After the first polishing belt 24 is inserted into the interior of the pull rod 3, it can be pressed on the inner wall of the pull rod 3 under the action of the elastic telescopic rod restoring the elastic deformation, and then the sliding body slides left and right, driving the first polishing belt 24 to move back and forth left and right on the inner side of the pull rod 3 to polish the burrs on the inner wall of the pull rod 3, and at the same time, the first polishing belt 24 is also driven by the rotating drive member 29 to rotate, so as to have a better polishing effect on the burrs. While the sliding body moves left and right, the adjusting rod 14 moves back and forth under the action of the fixed top block 34 and the movable top block 141, driving the two fixed rollers 33 to move back and forth, so that the concave area in the first grinding belt 24 moves back and forth to avoid the occurrence of grinding dead corners.

[0079] After the inner wall of the pull rod 3 is polished, the polishing mechanism is still supported inside the pull rod 3, and the second clamping drive 23 drives the support plate 15 to move downward, so that the support plate 15 leaves the pull rod 3. The first clamping drive 2 drives the outer wall polishing assembly to move upward for a distance, so that the second polishing belt 9 remains in a state where it can be pressed on the pull rod 3 while still having space for elastic movement up and down. The two groups of polishing mechanisms on the left and right sides are supported on the left and right ends of the pull rod 3. The rotating body drive 28 drives the rotating body 11 to rotate, thereby driving the polishing mechanism to rotate, and the polishing mechanism drives the pull rod 3 to rotate. The sliding drive drives the sliding block 4 to move left and right, driving the second polishing belt 9 to move back and forth left and right to polish the burrs on the outer wall of the pull rod 3. While the second polishing belt 9 moves left and right, it is also driven by the polishing drive 20 to rotate, thereby effectively removing the burrs on the outer wall of the pull rod 3.

[0080] The size of the grinding mechanism in the present invention can be automatically adjusted according to the size of the pull rod 3, and the state switching efficiency of the grinding mechanism is higher when grinding pull rods 3 of different specifications, which can effectively improve the production efficiency in the batch production process. The present invention can effectively grind the burrs on the inner and outer surfaces of the pull rod 3, effectively remove the burrs at the corners of the outer side wall of the pull rod 3, and the burr removal effect is better.

[0081] In this embodiment, the sliding body, the adjusting assembly and the grinding mechanism are all symmetrically provided in two groups. In other embodiments, the sliding body, the adjusting assembly and the grinding mechanism may also be provided in only one group. At this time, in the process of driving the pull rod 3 to rotate to grind the outer wall of the pull rod 3, it is necessary to insert the grinding mechanism deeper into the pull rod 3 to support the pull rod 3, thereby ensuring that the pull rod 3 is supported more stably.

[0082] In this embodiment, an adjusting drive 18 is provided to adjust the external dimensions of the adjusting assembly and the grinding mechanism. In other embodiments, the adjusting drive 18 is not provided. In this case, the adjusting assembly can be manually adjusted each time the pull rod 3 is installed so that the grinding mechanism can be inserted into the pull rod 3.

[0083] In this embodiment, the outer wall grinding assembly includes a frame, a second grinding belt 9 and a grinding drive 20. In other embodiments, the outer wall grinding assembly includes a frame, a grinding roller and a grinding drive 20. The grinding roller is rotatably installed on the frame, and the outer wall of the grinding roller is rough. The grinding drive 20 drives the grinding roller to rotate to grind the outer wall of the pull rod 3.

Claims

1. A device for grinding burrs on the surface of a box tie rod, comprising a frame, on which a clamping and positioning mechanism for clamping the tie rod is provided, characterized in that: Also includes: The sliding body is installed on the frame so as to be movable left and right. The sliding body is provided with four radially distributed limiting sliding grooves. Each limiting sliding groove is provided with a sliding block which is fixed to the left and right sides and prevents the sliding from falling off. The adjusting assembly is opposite to the clamping area of ​​the clamping positioning mechanism, and includes four round rods extending left and right and distributed in a square shape, each round rod is connected to each slider on the sliding body and is located on the side of the slider facing the clamping positioning mechanism, and an elastic telescopic rod is connected between any two adjacent round rods; The grinding mechanism comprises a retractable assembly, a first grinding belt sleeved on one end of the four round rods in the adjusting assembly facing away from the sliding body, and a telescopic support rod connected between two adjacent round rods at the top of the adjusting assembly, the retractable assembly comprises a support member fixed in an upper and lower position and arranged on the inner side of the first grinding belt, two fixed rollers extending left and right and guided and slidably installed on the telescopic support rod along the rod length direction of the telescopic support rod, and a movable roller connected to the guide slider and guided and slidably installed on the support member through the guide slider, a first elastic member is connected between the guide slider and the support member, the first elastic member applies a downward elastic force to the guide slider, driving the movable roller to press the part of the first grinding belt located between the two fixed rollers from top to bottom to below the fixed roller, so that the first grinding belt is tensioned on the outer sides of the four round rods and the two fixed rollers; The round rod is rotatably connected to the slider, both ends of the elastic telescopic rod are rotatably sleeved on the corresponding round rod, both ends of the telescopic support rod are rotatably sleeved on the corresponding round rod, and a rotating driving member is provided on the sliding body, and the rotating driving member is transmission-connected with one of the round rods in the adjustment assembly, and the rotating driving member drives the round rod to rotate and drives the first grinding belt to rotate; The frame is also provided with an adjusting drive member, which has a driving output end that can move toward or away from the round rods in the adjusting assembly in a vertical plane. The driving output end of the adjusting drive member is connected to a push block, and the adjusting drive member can drive the push block to push the round rods in the adjusting assembly so that the four round rods are gathered toward the middle.

2. The device for grinding burrs on the surface of a box tie rod according to claim 1, characterized in that: The frame is also provided with a support body, which is located between the sliding body and the grinding mechanism, and is used for four round rods in the adjustment component to pass through left and right.

3. The device for grinding burrs on the surface of a box tie rod according to claim 2, characterized in that: The two guide wheels are fixedly mounted on the support member, and the two guide wheels are fixedly mounted on the support member, wherein the two guide wheels are fixedly mounted on the support member, and the two guide wheels are fixedly mounted on the support member, wherein the two guide wheels are fixedly mounted on the support member, and the two guide wheels are fixedly mounted on the support member, 4. A device for grinding burrs on the surface of a box tie rod according to any one of claims 1 to 3, characterized in that: The clamping and positioning mechanism includes a first clamping drive member and a second clamping drive member arranged relatively to each other up and down, and an outer wall grinding assembly and a support plate respectively connected to the driving output end of the first clamping drive member and the driving output end of the second clamping drive member. The first clamping drive member and the second clamping drive member are used to drive the outer wall grinding assembly and the support plate to move closer to or away from each other to clamp or release the pull rod to be ground.

5. The device for grinding burrs on the surface of a box tie rod according to claim 4, characterized in that: The first clamping drive member is installed on the frame so as to be movable left and right, and the outer wall grinding assembly includes a frame connected to the driving output end of the first clamping drive member, a second grinding belt installed at the bottom of the frame, and a grinding drive member installed on the frame and transmission-connected to the second grinding belt to drive the second grinding belt to rotate in the front and rear directions.

6. The device for grinding burrs on the surface of a box tie rod according to claim 5, characterized in that: The frame body includes a support plate connected to the driving output end of the first clamping driving member and a bracket elastically and movably connected to the support plate up and down, and the second grinding belt is installed at the bottom of the bracket; the sliding body includes a sliding main body and a rotating body installed on the sliding main body and rotatable around a rotation axis extending left and right, the limiting slide groove is opened on the rotating body, and a rotating body driving member is installed on the sliding main body, which is connected to the rotating body to drive the rotating body to rotate, and drive the adjusting component and the grinding mechanism to rotate.

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