Sliding block ball filling mechanism and ball selecting method

Abstract

The invention discloses a sliding block ball filling mechanism and a ball selecting method, and belongs to the field of sliding block assembling. A sliding block bead filling mechanism comprises a mounting frame, a plurality of material boxes arranged at the upper end of the mounting frame, a plurality of discharging assemblies located below the material boxes, a sorting mechanism slidably connected to the lower end of the mounting frame and an electric guide rail driving the sorting mechanism to move. Each material box is connected with one discharging assembly; the discharging assembly comprises a discharging frame and a plurality of rotating discs which are coaxially and rotationally connected into the discharging frame. The outer wall of the rotating disc is evenly provided with containing grooves used for containing the balls in the circumferential direction. A feeding channel communicating with the material box is arranged at the upper end of the discharging frame. The lower end of the discharging frame is provided with a discharging channel for the balls to fall down. According to the scheme, the multiple sets of material boxes are arranged, balls of different sizes are stored, sliding blocks of different models can be met at the same time, manual ball replacement is not needed, and time and labor are saved.

Description

Technical Field

[0001] The invention belongs to the field of slider assembly, and more specifically, relates to a slider ball filling mechanism and a ball selection method. Background Art

[0002] During the processing of the slider, there will be errors in the size of the ball channel in the slider. And the errors are not the same. If the same kind of balls are poured into sliders with different errors, the balls will shake greatly in the slider with larger errors. During the operation of the slider, the slider will vibrate and rub against the track synchronously. This will affect the stability of the slider during operation, increase the friction of the balls, and reduce the service life of the slider. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a slider ball filling mechanism and a ball selection method, which can inject balls of an adapted diameter into the slider according to the size error of the slider itself.

[0004] A method for selecting a ball of a slider ball filling mechanism of the present invention comprises the following steps: The first step is data collection The slider to be assembled is measured to obtain the difference X between the difference between the slider L1 and L2 and the theoretical difference.

[0005] Step 2: Data statistics The difference between L1 and L2 is statistically analyzed every 0.001 mm to obtain a bar graph; the balls are divided into 12 types for matching to ensure assembly accuracy.

[0006] Step 3: Build a model According to the formula To calculate the mean μ of the normal distribution.

[0007] Where μ is the mean, X is the difference between the difference and the theoretical difference, and n is the number of samples.

[0008] Step 4: Output the results Using the three sigma criterion of normal distribution, the probability that the difference between L1 and L2 falls between 0 and 2Xmm is estimated, proving that these 12 types of balls can meet the requirements of slider ball selection.

[0009] A slider bead filling mechanism comprises a mounting frame, a plurality of material boxes arranged at the upper end of the mounting frame, a plurality of material discharge components located below the material boxes, a sorting mechanism slidably connected to the lower end of the mounting frame, and an electric guide rail driving the sorting mechanism to move; a material box is connected to a material discharge component; the material discharge component comprises a material discharge frame, a plurality of turntables coaxially connected to the material discharge frame; the outer wall of the turntable is uniformly provided with containing grooves for receiving balls along the circumferential direction; the upper end of the material discharge frame is provided with a feeding channel connected to the material box; the lower end of the material discharge frame is provided with a material discharge channel for the balls to fall.

[0010] As a further improvement of the present invention, there are 12 material boxes, one material box is equipped with balls of one size, the diameter of the balls in the material box near the middle is close to the peak value of the normal distribution, and the diameter of the balls in the material box located on the outside is far from the peak value of the normal distribution.

[0011] As a further improvement of the present invention, the sorting mechanism includes a sorting seat, a plurality of sorting plates fixed at the lower end of the sorting seat, and a receiving seat installed at the upper end of the sorting seat; the sorting plate is provided with a sorting channel for the movement of the balls.

[0012] As a further improvement of the present invention, the receiving seat is provided with a receiving hole which can be communicated with the material discharge channel; one receiving hole is communicated with a sorting channel through a connecting pipe.

[0013] As a further improvement of the present invention, a blanking seat is fixedly connected below the sorting seat; and a blanking hole communicating with the sorting channel is provided on the blanking seat.

[0014] As a further improvement of the present invention, the lower end of the mounting frame is fixedly connected to an electric guide rail for driving the sorting seat to move; the rear side of the electric guide rail is fixedly connected to a guide rail motor for driving the electric guide rail to operate.

[0015] As a further improvement of the present invention, a receiving seat is respectively provided on the left and right sides of the sorting seat; the material discharge components on the mounting frame are divided into two rows; and one receiving seat cooperates with one row of material discharge components.

[0016] As a further improvement of the present invention, it also includes a bead filling rack for inserting into the slider, and a bead filling lifting cylinder for driving the bead filling rack to move up and down; a bead filling channel is arranged in the bead filling rack; and the bead filling channel is connected to the drop hole through a hose.

[0017] As a further improvement of the present invention, the side wall of the blanking seat is provided with a blowing hole connected to the blanking hole; an air pump is fixedly connected to the mounting frame; and the air outlet end of the air pump is connected to the blowing hole.

[0018] Compared with the prior art, the beneficial effect of the present invention is that the present solution has multiple groups of material boxes, which store balls of different sizes and can simultaneously meet the needs of sliders of different models. There is no need to manually replace the balls, which saves time and effort.

[0019] This solution provides two rows of symmetrically arranged blanking components, which can accommodate more blanking components in a limited space, thereby improving space utilization.

[0020] This solution provides a turntable, and the balls are transported through the grooves on the turntable, and a specified number of balls are dropped each time. The structure is stable, and the number of balls dropped is convenient for accurate control.

[0021] By setting up electric guide rails, the sorting seat is controlled to move to the lower end of the specified blanking component, and the ball of the corresponding size is quickly selected according to the model of the slider.

[0022] The gas generated by the air pump can speed up the movement of the balls and prevent the balls from getting stuck between the blanking holes and the sliders, thus reducing the probability of problems occurring during the bead filling process.

[0023] This solution collects and analyzes data from a large number of sliders and selects 12 different diameters of balls to compensate for the size errors of the sliders. Digital standardization of the equipment is a prerequisite for the factory to carry out digital twin work.

[0024] After the balls of appropriate diameter are poured into the slider, the balls compensate for the size error of the slider, and the assembled slider is more stable when matched with the track, which reduces the shaking amplitude of the slider during movement, thereby extending the service life of the slider and improving the precision of the slider. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a cross-sectional structural schematic diagram of the blanking assembly of the present invention; Figure 3 It is a structural schematic diagram of the electric guide rail of the present invention; Figure 4 It is a structural schematic diagram of the sorting mechanism of the present invention; Figure 5 It is a structural schematic diagram of the bead filling rack of the present invention; Figure 6 It is a structural schematic diagram of the slider of the present invention; Figure 7 It is a structural schematic diagram of the second embodiment; Figure 8 This is a bar chart of Example 2.

[0026] Description of the numbers in the figure: 1. Mounting frame; 2. Material box; 21. Material discharge pipe; 22. Cover body; 3. Material discharge assembly; 31. Material discharge rack; 311. Material discharge channel; 32. Material feeding channel; 33. Turntable; 331. Container; 34. Turntable motor; 4. Sorting mechanism; 41. Sorting seat; 42. Receiver seat; 421. Receiver hole; 43. Connecting pipe; 4. Sorting plate; 441. Sorting channel; 45. Material discharge seat; 451. Material discharge hole; 452. Air blowing hole; 5. Electric guide rail; 51. Guide rail motor; 6. Ball; 71. Bead filling lifting cylinder; 72. Bead filling rack; 73. Bead filling channel; 8. Slider; 81. Ball channel; 9. Track. DETAILED DESCRIPTION

[0027] Specific embodiment 1: Please refer to Figure 1-Figure 6 A slider bead filling mechanism, characterized in that it includes: a mounting frame 1, a plurality of material boxes 2 arranged at the upper end of the mounting frame 1, a plurality of unloading components 3 located below the material box 2, a sorting mechanism 4 slidably connected to the lower end of the mounting frame 1, and an electric guide rail 5 for driving the sorting mechanism 4 to move; one material box 2 is connected to one unloading component 3; the unloading component 3 includes a unloading frame 31, a plurality of turntables 33 coaxially connected to the unloading frame 31; the outer wall of the turntable 33 is uniformly provided with containing grooves 331 for receiving balls 6 along the circumferential direction; the upper end of the unloading frame 31 is provided with a feeding channel 32 connected to the material box 2; the lower end of the unloading frame 31 is provided with a unloading channel 311 for the balls 6 to fall.

[0028] Each of the material boxes 2 contains balls 6 of different diameters. There are 12 of the material boxes, and one material box contains balls of one size.

[0029] The unloading mechanism 3 further includes a turntable motor 34 for driving each turntable 33 to rotate synchronously.

[0030] The sorting mechanism 4 includes a sorting seat 41, a plurality of sorting plates 44 fixed at the lower end of the sorting seat 41, and a receiving seat 42 installed at the upper end of the sorting seat 41; the sorting plate 44 is provided with a sorting channel 441 for the balls 6 to move.

[0031] The receiving seat 42 is provided with a receiving hole 421 which can be communicated with the material discharge channel 311 ; one receiving hole 421 is communicated with one sorting channel 441 through a connecting pipe 43 .

[0032] A blanking seat 45 is fixedly connected below the sorting seat 41 ; a blanking hole 451 communicating with the sorting channel 441 is provided on the blanking seat 45 .

[0033] The lower end of the mounting frame is fixedly connected with an electric guide rail 5 for driving the sorting seat 41 to move; the rear side of the electric guide rail 5 is fixedly connected with a guide rail motor 51 for driving the electric guide rail 5 to operate.

[0034] The receiving seat 42 is respectively arranged on the left and right sides of the sorting seat 41; the blanking components 3 on the mounting frame 1 are divided into two rows; one receiving seat 42 cooperates with a row of blanking components 3; the sorting channel 441 is "Y"-shaped, connecting the two receiving seats 42 and the blanking seat 45.

[0035] A cover 22 is installed at the upper end of the material box 2.

[0036] It also includes a bead filling rack 72 for inserting into the slider 8 and a bead filling lifting cylinder 71 for driving the bead filling rack 72 to move up and down; a bead filling channel 73 is provided in the bead filling rack 72; the bead filling channel 73 is connected to the drop hole 451 through a hose; the ball 6 enters the slider 8 through the bead filling channel 73.

[0037] The side wall of the blanking seat 45 is provided with a blowing hole 452 which is in communication with the blanking hole 451 ; an air pump is fixedly connected to the mounting frame 1 ; and the air outlet end of the air pump is in communication with the blowing hole 452 .

[0038] The gas blown out by the air pump enters the blanking hole 451 through the air blowing hole 452, and enters the bead filling channel 73 through the blanking hole 451. The gas generated by the air pump can accelerate the movement speed of the ball 6, and can also prevent the ball 6 from being stuck between the blanking hole 451 and the slider 8.

[0039] The diameter of the blowing hole 452 is smaller than the diameter of the ball 6 .

[0040] This solution is used to add balls 6 into the slider 8; a ball channel 81 is provided in the slider 8; the balls 6 are evenly arranged in the ball channel 81. The slider 8 has a variety of models, and different models need to be installed with balls 6 of corresponding sizes and models.

[0041] When filling beads, a slider 8 is located below the bead filling rack 72. According to the model of the slider 8, the guide motor 51 drives the electric guide 5 to work, so that the sorting seat 41 moves. Finally, the sorting seat 41 moves to the lower end of the designated unloading component 3, and the corresponding material box 2 has the balls 6 required by the slider 8.

[0042] At the same time, the bead filling lifting cylinder 71 works, driving the bead filling rack 72 to move downward, and the bead filling rack 72 is inserted into the slider 8, and finally the bead filling channel 73 is connected with the ball channel 81.

[0043] Then the turntable motor 34 starts working, and each turntable 33 rotates a specified angle, so that a specified number of balls 6 enter the receiving groove 331 from the material box 2, and fall into the receiving hole 421 through the receiving groove 331. Finally, the balls 6 pass through the receiving hole 421, the connecting pipe 43, the sorting channel 441, the material drop hole 451, the hose, and the ball filling channel 73 in sequence and enter the ball channel 81.

[0044] At the same time, the air pump works to blow air into the air hole 452 to accelerate the movement of the ball 6.

[0045] Finally, a specified number of balls 6 enter the ball channel 81, thereby completing the bead filling work of the slider 8. Then, the bead filling lifting cylinder 71 works to drive the bead filling frame 72 to move upward, and the bead filling frame 72 is separated from the slider 8.

[0046] Repeat the above process to fill each slider 8 with beads.

[0047] Specific embodiment 2: Please refer to Figure 7-Figure 8 A method for selecting a ball of a slider ball filling mechanism comprises the following steps: The first step is data collection The slider to be assembled is measured to obtain the difference X between the difference between the slider L1 and L2 and the theoretical difference.

[0048] Step 2: Data statistics The difference between L1 and L2 is statistically analyzed every 0.001 mm to obtain a bar graph; the balls are divided into 12 types for matching to ensure assembly accuracy.

[0049] Step 3: Build a model According to the formula To calculate the mean μ of the normal distribution.

[0050] Where μ is the mean, X is the difference between the difference and the theoretical difference, and n is the number of samples.

[0051] Step 4: Output the results Using the three sigma criterion of normal distribution, the probability that the difference between L1 and L2 falls between 0 and 2Xmm is estimated, proving that these 12 types of balls can meet the requirements of slider ball selection.

[0052] L1 is the distance between two transverse ball channels 81, and L2 is the distance between two longitudinal ball channels 81; the track 9 has four track channels that cooperate with the ball channels 81; H1 is the distance between two transverse track channels, and H2 is the distance between two longitudinal track channels.

[0053] In the processing of the slider, there are errors in the dimensions L1, L2 and H1, H2. For example, when the difference between L1 and L2 changes, the ball diameter D will change accordingly to ensure assembly accuracy. Therefore, balls of different diameters need to be prepared for matching during the assembly of the slider. Taking a certain model of slider as an example, a large number of sliders to be assembled were measured and it was found that the difference between the difference between L1 and L2 of most sliders and the theoretical difference was between 0 and 0.012 mm. The difference between L1 and L2 was statistically analyzed every 0.001 mm to obtain the following: Figure 8From the bar graph shown, we can see that the data is roughly normally distributed, so the balls are divided into 12 types for matching to ensure assembly accuracy. To calculate the mean of the normal distribution, the result is approximately equal to 0.006mm, so the measured data takes the middle value of 0.006mm as the mean of the normal distribution. Using the three sigma criterion of the normal distribution, it is estimated that the probability that the difference between L1 and L2 falls between 0 and 0.012mm is about 99.7%, which is close to the 99.4% of the above measured data, indicating that these 12 types of balls can meet the requirements of the slider ball selection.

[0054] The 12 material boxes respectively contain balls that meet the requirements for selecting the slider balls. The diameter of the balls in the material box near the middle is close to the peak value of the normal distribution, and the diameter of the balls in the material boxes located on the outside is far from the peak value of the normal distribution.

[0055] When filling beads, the ball diameter required by most sliders is close to the size of the normal distribution peak value. Therefore, when the sorting seat moves, it moves near the material box near the middle most of the time, which reduces the moving distance of the sorting seat, saves the moving time of the sorting seat, and improves the working efficiency of the sorting seat.

Claims

1. A method for selecting a ball of a slider ball filling mechanism, characterized in that: The following steps are involved: The first step is data collection The slider to be assembled is measured to obtain the difference X between the difference between the slider L1 and L2 and the theoretical difference; Step 2: Data statistics The difference between L1 and L2 is counted every 0.001mm to get a bar graph; the balls are divided into 12 types for matching to ensure assembly accuracy; Step 3: Build a model According to the formula To calculate the mean μ of the normal distribution; Where μ is the mean, X is the difference between the difference and the theoretical difference, and n is the number of samples; Step 4: Output the results Using the three sigma criterion of normal distribution, the probability that the difference between L1 and L2 falls between 0 and 2Xmm is estimated, proving that these 12 types of balls can meet the requirements of slider ball selection.

2. A slider bead filling mechanism, using the ball selection method of the slider bead filling mechanism as claimed in claim 1, characterized in that: It includes a mounting frame, a plurality of material boxes arranged at the upper end of the mounting frame, a plurality of material unloading components located below the material boxes, a sorting mechanism slidably connected to the lower end of the mounting frame, and an electric guide rail for driving the sorting mechanism to move; one material box is connected to one unloading component; the unloading component includes a unloading rack, a plurality of turntables coaxially connected to the unloading rack; the outer wall of the turntable is evenly provided with accommodating grooves for accommodating balls along the circumferential direction; the upper end of the unloading rack is provided with a feeding channel connected to the material box; the lower end of the unloading rack is provided with a unloading channel for the balls to fall.

3. A slider bead filling mechanism according to claim 1, characterized in that: There are 12 material boxes, one of which is filled with balls of one size. The diameter of the balls in the material box near the middle is close to the peak value of the normal distribution, and the diameter of the balls in the material box located on the outside is far from the peak value of the normal distribution.

4. A slider bead filling mechanism according to claim 1, characterized in that: The sorting mechanism comprises a sorting seat, a plurality of sorting plates fixed at the lower end of the sorting seat, and a receiving seat installed at the upper end of the sorting seat; and a sorting channel for the movement of balls is arranged on the sorting plate.

5. A slider bead filling mechanism according to claim 4, characterized in that: The receiving seat is provided with a receiving hole which can be communicated with the material discharge channel; one receiving hole is communicated with a sorting channel through a connecting pipe.

6. A slider bead filling mechanism according to claim 5, characterized in that: A blanking seat is fixedly connected below the sorting seat; and a blanking hole communicating with the sorting channel is arranged on the blanking seat.

7. A slider bead filling mechanism according to claim 4, characterized in that: The lower end of the mounting frame is fixedly connected with an electric guide rail for driving the sorting seat to move; the rear side of the electric guide rail is fixedly connected with a guide rail motor for driving the electric guide rail to operate.

8. The slider bead filling mechanism according to claim 4, characterized in that: The receiving seat is respectively arranged on the left and right sides of the sorting seat; the material discharging components on the mounting frame are divided into two rows; and one receiving seat cooperates with one row of material discharging components.

9. The slider bead filling mechanism according to claim 6, characterized in that: It also includes a bead filling rack for inserting into the slide block, and a bead filling lifting cylinder for driving the bead filling rack to move up and down; a bead filling channel is arranged in the bead filling rack; and the bead filling channel is connected with the drop hole through a hose.

10. The slider bead filling mechanism according to claim 6, characterized in that: The side wall of the blanking seat is provided with a blowing hole connected with the blanking hole; an air pump is fixedly connected to the mounting frame; and the air outlet end of the air pump is connected with the blowing hole.

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