Bulk steel ball array feeding and discharging device

Abstract

The utility model provides a bulk steel ball array feeding and discharging device which comprises a base which is divided into an operation table on the upper portion and a box body on the lower portion and further comprises a feeding plate, a positioning and limiting mechanism arranged on the top of the operation table, a steel ball box detachably arranged on the top of the operation table and a steel ball jacking mechanism fixedly installed on the top of the interior of the box body. The steel ball taking mechanism is arranged on the upper side of the steel ball box and can be matched with the steel ball jacking mechanism; according to the automatic steel ball feeding and discharging device, the positioning and limiting mechanism, the steel ball jacking mechanism and the steel ball taking mechanism are arranged in the base, automatic feeding and discharging of steel balls in a threaded through hole of a workpiece are achieved, and compared with a manual single steel ball feeding and discharging mode, the automatic steel ball feeding and discharging mode improves efficiency and reduces labor intensity. The steel balls in the threaded through hole of the workpiece can be fed and discharged completely and thoroughly, the accuracy rate of automatic steel ball feeding and discharging is high, and the conditions of neglected loading and wrong loading are avoided.

Description

Technical Field

[0001] The utility model relates to the field of steel ball loading and unloading devices, in particular to a bulk steel ball loading and unloading device. Background Art

[0002] like Figure 12 The figure shows a workpiece for a compressed air source switch. This component is installed on the compressed air source switch to enhance its appearance. For aesthetic reasons, the workpiece needs to be painted. This workpiece has a threaded through-hole. If painted directly, paint will enter the threaded through-hole. In this case, a suitably sized steel ball is placed in the threaded through-hole and removed after painting is complete to prevent paint from entering the threaded through-hole.

[0003] In the prior art, the above-mentioned problem is solved by manually placing a steel ball into a threaded through hole of a workpiece and manually removing it after painting is completed. The inventors, in combination with relevant technologies, found in actual applications that the manual loading and unloading method of a single steel ball is not only inefficient, but also causes some problems, such as: manual loading and unloading is boring and repetitive, prone to fatigue, and labor-intensive; manual loading and unloading is prone to errors, and visual fatigue can easily lead to the leakage of steel balls in individual holes, causing damage to the workpiece. Utility Model Content

[0004] In order to solve the problems of low efficiency of manual loading and unloading of steel balls and easy damage to workpieces caused by missing steel balls in the existing technology, the utility model provides a bulk steel ball loading and unloading device;

[0005] The bulk steel ball loading and unloading device provided by the utility model adopts the following technical solutions:

[0006] The bulk steel ball loading and unloading device comprises a base, which is divided into an upper operating table and a lower box, and further comprises:

[0007] A loading plate, wherein a plurality of workpiece fixing holes are formed through the top of the loading plate, and the plurality of workpiece fixing holes are distributed on the surface of the loading plate in a rectangular array;

[0008] A positioning and limiting mechanism is provided on the top of the operating table and is used to fix the loading plate and move the loading plate to the same position;

[0009] A steel ball box, which is detachably arranged on the top of the operating table and is positioned by a positioning and limiting mechanism, and is used to hold bulk steel balls;

[0010] A steel ball lifting mechanism, which is fixedly mounted on the top of the box body and can pass through the top wall of the box body and lift the bulk steel balls in the steel ball box;

[0011] The steel ball picking mechanism is arranged on the upper side of the steel ball box and can cooperate with the steel ball lifting mechanism. The steel ball picking mechanism can move relative to the X-axis and Z-axis directions of the operating table.

[0012] Furthermore, the positioning and limiting mechanism includes a limiting mounting plate, a pushing cylinder and four field blocks; a limiting mounting plate is provided on the top of the operating table, a positioning groove for positioning the steel ball box is provided on the limiting mounting plate, a pushing cylinder is fixedly installed on the top of the limiting mounting plate, and the output end of the pushing cylinder is fixedly connected to the field block, three field blocks are fixedly installed on the top of the operating table, the four fields are at the same horizontal height, and the four field blocks surround and fix the loading plate from the four corners of the loading plate.

[0013] Furthermore, the bottom wall of the steel ball box is tilted downward, and a through slot is provided on the bottom wall of the steel ball box; a slide slot is provided at the bottom of the steel ball box, and a baffle for closing the through slot is slidably connected in the slide slot.

[0014] Furthermore, the steel ball lifting mechanism includes a lifting electric cylinder and a steel ball lifting plate. The lifting electric cylinder is fixedly installed on the top of the box body. The output end of the lifting electric cylinder is fixedly connected to the steel ball lifting plate. The steel ball lifting plate can pass through the through groove to enter the interior of the steel ball box. Several steel ball accommodating holes are opened on the top of the steel ball lifting plate, and the surface where the steel ball accommodating holes are located is an inwardly concave arc surface.

[0015] Furthermore, the steel ball picking mechanism includes a horizontally movable electric cylinder, a first slider, an electric cylinder connecting plate, an up and down movable electric cylinder, a picking connecting plate, a steel ball pick, an electromagnet and a picking spring; a bracket is provided on the top of the operating table, and the brackets are two and parallel to each other, and the tops of the two brackets are respectively installed with a horizontal movable electric cylinder and a first guide rail, the tops of the first guide rails are slidably connected with the first slider, the first slider and the output end of the horizontal movable electric cylinder are at the same horizontal height, the top of the first slider and the output end of the horizontal movable electric cylinder are commonly connected with the electric cylinder connecting plate, and the electric cylinder connecting plate is arranged along the Y-axis direction of the operating table, and the side wall of the electric cylinder connecting plate is fixedly installed with the up and down movable electric cylinder, the output end of the up and down movable electric cylinder is fixedly connected with the picking connecting plate, and the side wall of the picking connecting plate is fixedly connected with the steel ball pick, and a number of electromagnets are installed at the bottom of the picking connecting plate, and the magnetic suction ends of the several electromagnets are all installed with picking springs, and the electromagnets correspond one to one to the steel ball accommodating holes.

[0016] Furthermore, the steel ball picking mechanism also includes a stable lifting assembly, which includes a second slider, a second guide rail and a profile; the side wall of the electric cylinder connecting plate is fixedly connected to the second slider, the side wall of the second slider is slidably connected to the second guide rail, the side wall of the second guide rail is fixedly connected to the profile by bolts, the bottom surface of the profile is at the same horizontal height as the output end of the up and down moving electric cylinder, and the bottom of the profile is fixedly connected to the picking connecting plate by bolts.

[0017] Furthermore, a proximity switch mounting groove for mounting a proximity switch is provided on the side wall of the steel ball lifting plate. The proximity switch mounting groove is internally connected to the steel ball receiving hole, and a cover plate is mounted at the opening of the proximity switch mounting groove by bolts.

[0018] Furthermore, there are two groups of stable lifting components, and the two groups of stable lifting components are symmetrically arranged on both sides of the upper and lower moving electric cylinders.

[0019] Furthermore, there are two steel ball picking mechanisms, the two first sliders are slidably connected to the same first guide rail, and the two steel ball picking mechanisms are symmetrically arranged on both sides of the loading plate along the X-axis direction of the operating table.

[0020] In summary, the beneficial effects of the present invention are as follows:

[0021] The utility model realizes the automatic loading and unloading of steel balls in the threaded through hole of the workpiece by arranging a positioning and limiting mechanism, a steel ball lifting mechanism and a steel ball taking mechanism in the base. Compared with the manual loading and unloading method of single steel balls, this automatic steel ball loading and unloading improves the efficiency and can ensure that the steel balls in the threaded through hole of the workpiece are loaded and unloaded completely and thoroughly. In addition, the automatic steel ball loading and unloading has a high accuracy rate and will not cause missed or wrong loading. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the main view of the utility model;

[0023] Figure 2 This is a schematic diagram of the specific structure of the utility model;

[0024] Figure 3 This is a schematic cross-sectional view of the utility model from an upper side perspective;

[0025] Figure 4 This is a structural diagram of the steel ball box of the utility model;

[0026] Figure 5 This is a schematic diagram of the utility model of the steel ball box with the baffle installed;

[0027] Figure 6 It is a cross-sectional schematic diagram of the utility model;

[0028] Figure 7 This is an enlarged schematic diagram of the steel ball taking mechanism of the utility model;

[0029] Figure 8 This is a schematic diagram of the steel ball taking mechanism of the utility model from the rear side;

[0030] Figure 9 This is a schematic diagram of the steel ball taking mechanism from the bottom side of the present invention;

[0031] Figure 10 This is a schematic diagram of the specific structure of the steel ball lifting plate of the utility model;

[0032] Figure 11 This is a schematic diagram of the state where the steel ball lifting plate of the utility model is installed with the cover plate;

[0033] Figure 12 This is a schematic diagram of the workpiece structure of the utility model.

[0034] As shown in the figure: 1-base, 11-operating table, 12-box, 13-bracket, 14-first guide rail, 2-loading plate, 21-workpiece fixing hole, 3-steel ball box, 31-through slot, 32-slide slot, 33-baffle, 41-limit mounting plate, 411-positioning slot, 42-pushing cylinder, 43-field stopper, 51-lifting electric cylinder, 52-steel ball lifting plate, 521-steel ball receiving hole, 522-proximity switch mounting slot, 523-cover plate, 61-horizontal moving electric cylinder, 62-first slide block, 63-electric cylinder connecting plate, 64-up and down moving electric cylinder, 65-feeding connecting plate, 66-steel ball pick, 67-electromagnet, 68-feeding spring, 71-second slide block, 72-second guide rail, 73-profile. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1 -Attached Figure 12 The utility model is further described in detail:

[0036] The embodiment of the utility model discloses a device for loading and unloading bulk steel balls in an array, such as Figure 1 、 Figure 2 、 Figure 3 、 Figure 6 、 Figure 8 As shown, the bulk steel ball loading and unloading device of the present invention includes a base 1, which is divided into an upper operating table 11 and a lower box 12, and also includes:

[0037] A loading plate 2, a plurality of workpiece fixing holes 21 are formed through the top of the loading plate 2, and the plurality of workpiece fixing holes 21 are distributed in a rectangular array on the surface of the loading plate 2;

[0038] The positioning and limiting mechanism is arranged on the top of the operating table 11, and is used to fix the loading plate 2 and move the loading plate 2 to the same position;

[0039] The steel ball box 3 is detachably arranged on the top of the operating table 11 and is positioned by a positioning and limiting mechanism. The steel ball box 3 is used to hold bulk steel balls;

[0040] The steel ball lifting mechanism is fixedly mounted on the top of the box 12. The steel ball lifting mechanism can pass through the top wall of the box 12 and lift the bulk steel balls in the steel ball box 3.

[0041] The steel ball taking mechanism is arranged on the upper side of the steel ball box 3 and can cooperate with the steel ball lifting mechanism. The steel ball taking mechanism can move in the X-axis direction and the Z-axis direction relative to the operating table 11;

[0042] In this embodiment, the base 1 is a standard design of automation equipment commonly used in the prior art. A control panel for controlling the device is provided on the upper outer wall of the base 1. The control panel includes function buttons such as emergency stop, lighting, start, and stop. Lockable universal wheels are provided at the bottom to facilitate the movement of the equipment. The upper part is an operating table 11 and the lower part is a box 12. Processing is generally performed on the upper operating table 11. The lower box 12 usually contains a power supply unit, so it will not be described in detail. According to the operating status of the device, the operating table 11 is used as a reference and a coordinate system is established as follows: Figure 2 As shown, the movement direction of the horizontal moving electric cylinder 61 is the X-axis direction relative to the operating table 11, and the movement direction of the vertical moving electric cylinder 64 is the Z-axis direction relative to the operating table 11.

[0043] The specific shape of the loading plate 2 is as follows Figure 3 As shown, the loading plate 2 is a rectangular plate. The loading plate 2 is clamped with a number of workpieces to be loaded or unloaded through the workpiece fixing hole 21. There is a threaded through hole on the workpiece. The purpose of this application is to put steel balls in the threaded through hole so that paint will not enter the threaded through hole when the workpiece is being sprayed. The positioning and limiting mechanism is used to fix the loading plate 2. Since the loading plate 2 and the workpiece will be continuously replaced, it is necessary to ensure that the loading plate 2 is in the same position each time it is replaced so that it can cooperate with the steel ball feeding mechanism. The top of the operating table 11 is provided with an angle iron for determining the position of the steel ball box 3. Since the steel ball box 3 needs to be fixed in position to cooperate with the steel ball lifting mechanism, the side wall of the steel ball box 3 is formed with a stop by the positioning and limiting mechanism and the angle iron, and the steel ball box 3 and the angle iron are fixed by bolts.

[0044] like Figure 2 、 Figure 3 、 Figure 7As shown, the positioning and limiting mechanism includes a limiting mounting plate 41, a pushing cylinder 42 and four field stops 43; a limiting mounting plate 41 is provided on the top of the operating table 11, and a positioning groove 411 for positioning the steel ball box 3 is provided on the limiting mounting plate 41. A pushing cylinder 42 is fixedly installed on the top of the limiting mounting plate 41, and the output end of the pushing cylinder 42 is fixedly connected to the field stop 43. Three field stops 43 are fixedly installed on the top of the operating table 11, and the four fields are at the same horizontal height. The four field stops 43 surround and fix the loading plate 2 from the four corners of the loading plate 2; in this embodiment, the position of the field stop 43 is as shown in FIG. Figure 3 As shown, the edge of the field stopper 43 extends upward to form a triangular side wall block. Three of the four field stoppers 43 are fixed, and the spacing is slightly larger than the side length of the loading plate 2, so that the loading plate 2 can be placed on top of the field stopper 43. Another field stopper 43 is installed at the output end of the push cylinder 42. When in use, first place the loading plate 2 on top of the three fixed field stoppers 43, start the push cylinder 42, and the field stopper 43 at the output end of the push cylinder 42 will push the loading plate 2 and fix it between the four field stoppers 43. The position and shape of the positioning groove 411 are as shown in FIG. Figure 3 As shown, the positioning groove 411 can cooperate with the angle iron to determine the position of the steel ball box 3.

[0045] like Figure 3 、 Figure 4 、 Figure 5 As shown, the bottom wall of the steel ball box 3 is tilted downward, and a through slot 31 is formed in the bottom wall of the steel ball box 3; a chute 32 is provided at the bottom of the steel ball box 3, and a baffle 33 is slidably connected to the chute 32 to close the through slot 31. In this embodiment, the bottom wall of the steel ball box 3 is tilted toward the through slot 31. This has the advantage of allowing a large amount of bulk steel balls to accumulate in the through slot 31, making it easier for the steel ball lifting plate 52 to remove the material. By providing the chute 32 and baffle 33 at the bottom of the steel ball box 3, the through slot 31 at the bottom can be closed when the steel ball box 3 is disassembled and replaced, preventing the bulk steel balls from escaping from the through slot 31.

[0046] like Figure 2 、 Figure 3 、 Figure 6 、 Figure 7As shown, the steel ball lifting mechanism includes a lifting cylinder 51 and a steel ball lifting plate 52. The lifting cylinder 51 is fixedly installed on the top of the box body 12, and the output end of the lifting cylinder 51 is fixedly connected to the steel ball lifting plate 52. The steel ball lifting plate 52 can pass through the through slot 31 to enter the interior of the steel ball box 3. A plurality of steel ball accommodating holes 521 are provided on the top of the steel ball lifting plate 52, and the surface where the steel ball accommodating holes 521 are located is an inwardly concave arc surface; in this embodiment, the top wall of the box body 12 is fixedly connected with a mounting column for installing the lifting cylinder 51, and the lifting cylinder 51 is arranged inside the box body 12, and its output end can push the steel ball lifting plate 52 through the through slot 31 to enter the interior of the steel ball box 3. The depth of the steel ball accommodating hole 521 is slightly smaller than the diameter of a bulk steel ball to ensure that each steel ball accommodating hole 521 can only accommodate one bulk steel ball. The surface where the steel ball receiving hole 521 is located is recessed inward. This has the advantage of making it easier for the bulk steel balls to enter the steel ball receiving hole 521 when the steel ball lifting plate 52 passes through the through slot 31 and lifts the bulk steel balls. It is worth noting that when the steel ball lifting plate 52 lifts the bulk steel balls, in addition to the bulk steel balls that enter the steel ball receiving hole 521, some bulk steel balls will remain on the curved surface where the steel ball receiving hole 521 is located. In subsequent steps, the steel ball removal mechanism will push the excess bulk steel balls back into the steel ball box 3.

[0047] like Figure 2 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 As shown, the steel ball picking mechanism includes a horizontal moving electric cylinder 61, a first slider 62, an electric cylinder connecting plate 63, an up and down moving electric cylinder 64, a picking connecting plate 65, a steel ball pick 66, an electromagnet 67 and a picking spring 68; a bracket 13 is provided on the top of the operating table 11, and the brackets 13 are two and parallel to each other. The tops of the two brackets 13 are respectively installed with the horizontal moving electric cylinder 61 and the first guide rail 14. The top of the first guide rail 14 is slidably connected with the first slider 62. The first slider 62 and the output end of the horizontal moving electric cylinder 61 are at the same horizontal height. The first slider The top of 62 and the output end of the horizontal moving electric cylinder 61 are commonly connected to the electric cylinder connecting plate 63, and the electric cylinder connecting plate 63 is arranged along the Y-axis direction of the operating table 11. The side wall of the electric cylinder connecting plate 63 is fixedly installed with an up-and-down moving electric cylinder 64. The output end of the up-and-down moving electric cylinder 64 is fixedly connected to a material picking connecting plate 65. The side wall of the material picking connecting plate 65 is fixedly connected to a steel ball picker 66. A plurality of electromagnets 67 are installed at the bottom of the material picking connecting plate 65. The magnetic ends of the plurality of electromagnets 67 are all installed with a material picking spring 68. The electromagnets 67 correspond one to one with the steel ball receiving holes 521.

[0048] In this embodiment, the electric cylinder connecting plate 63 is connected to both the first slider 62 and the output end of the horizontal moving electric cylinder 61. The electric cylinder connecting plate 63 is arranged perpendicular to the direction of movement of the horizontal moving electric cylinder 61 and is disposed along the Y-axis of the operating table 11. When the horizontal moving electric cylinder 61 moves, the electric cylinder connecting plate 63 simultaneously drives the first slider 62 and the vertical moving electric cylinder 64 to move along the X-axis of the operating table 11. The vertical moving electric cylinder 64 is connected to one side of the electric cylinder connecting plate 63 near the end. Due to the heavy weight of the vertical moving electric cylinder 64, the electric cylinder connecting plate 63 can easily deform, making it difficult for the horizontal moving electric cylinder 61 to drive the vertical moving electric cylinder 64 and causing problems with the positioning of the bulk material steel balls. By providing the first slider 62 and the first guide rail 14, the vertical moving electric cylinder 64 can move smoothly and accurately as it moves with the horizontal moving electric cylinder 61.

[0049] like Figure 7 As shown, when the horizontal moving electric cylinder 61 and the up-down moving electric cylinder 64 are in the default position, the electromagnet 67 corresponds to the steel ball receiving hole 521 one by one. When in use, the horizontal moving electric cylinder 61 will drive the up-down moving electric cylinder 64 to move toward the upper material plate 2 until the steel ball picker 66 passes the steel ball lifting plate 52. The up-down moving electric cylinder 64 is started to make the steel ball picker 66 drop to a height slightly higher than the steel ball lifting plate 52. The horizontal moving electric cylinder 61 will drive the up-down moving electric cylinder 64 to move away from the material feeding plate 2 so that the steel ball picker 66 can push the excess loose steel balls on the arc surface where the steel ball receiving hole 521 is located back into the steel ball box 3. After the above steps are completed, the horizontal moving electric cylinder 61 and the up-down moving electric cylinder 64 will return to the default position, that is, the state where the electromagnet 67 corresponds to the steel ball receiving hole 521 one by one. Then the up-down moving electric cylinder 64 is started to make the material taking connecting plate 65 and the electromagnet Iron 67 moves downward until the picking spring 68 at the magnetic end of the electromagnet 67 contacts the bulk steel balls in the steel ball accommodating hole 521. At this time, the electromagnet 67 starts, and the electromagnet 67 magnetically attracts the bulk steel balls through the picking spring 68. The up and down moving electric cylinder 64 starts to raise the picking connecting plate 65 and the electromagnet 67. The horizontal moving electric cylinder 61 will drive the up and down moving electric cylinder 64 to move toward the upper material plate 2, so that the electromagnet 67 is aligned with the workpiece in the workpiece fixing hole 21. The up and down moving electric cylinder 64 starts, so that the electromagnet 67 moves downward until the bulk steel balls at the end of the picking spring 68 enter the threaded through hole on the surface of the workpiece. The electromagnet 67 stops working, and the horizontal moving electric cylinder 61 and the up and down moving electric cylinder 64 will return to the default position. It is worth noting that a material picking spring 68 is installed at the magnetic end of the electromagnet 67. The material of the material picking spring 68 is a magnetizable metal material. The advantage of this is that when the electromagnet 67 moves down with the electric cylinder 64, the steel ball lifting plate 52 will not be crushed, and the material picking spring 68 is smaller in size and can more easily enter the steel ball receiving hole 521 and the threaded through hole on the surface of the workpiece.

[0050] like Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 As shown, the steel ball picking mechanism also includes a stable lifting component, which includes a second slider 71, a second guide rail 72 and a profile 73; the side wall of the electric cylinder connecting plate 63 is fixedly connected to the second slider 71, and the side wall of the second slider 71 is slidably connected to the second guide rail 72, and the side wall of the second guide rail 72 is fixedly connected to the profile 73 by bolts, and the bottom surface of the profile 73 is at the same horizontal height as the output end of the up and down moving electric cylinder 64, and the bottom of the profile 73 is fixedly connected to the picking connecting plate 65 by bolts; in this embodiment, by adding the second slider 71, the second guide rail 72 and the profile 73, the lifting process of the picking connecting plate 65 and the electromagnet 67 is made more stable, so as to ensure that the electromagnet 67 is more accurately positioned when installing bulk steel balls for the workpiece. The second guide rail 72 is a linear guide commonly used in the prior art. Since the second guide rail 72 cannot be directly connected to the reclaiming connection plate 65, it is connected to the profile 73, which in turn is connected to the reclaiming connection plate 65. Notably, unlike the first guide rail 14 and the first slider 62, in this assembly, the second slider 71 is fixed, while the second guide rail 72 slides along the sidewalls of the second slider 71. Preferably, two sets of stable lifting assemblies are arranged symmetrically along the Y-axis of the operating platform 11, on either side of the vertical electric cylinder 64.

[0051] like Figure 10 、 Figure 11 As shown, the side wall of the steel ball lifting plate 52 is provided with a proximity switch mounting groove 522 for mounting a proximity switch. The proximity switch mounting groove 522 is internally connected to the steel ball receiving hole 521. A cover plate 523 is mounted at the opening of the proximity switch mounting groove 522 by bolts. In this embodiment, the specific structure of the steel ball lifting plate 52 is as follows. Figure 10 As shown, the proximity switch mounting slot 522 is connected to each steel ball receiving hole 521. A proximity switch (not shown) is installed in the proximity switch mounting slot 522 with its detection end aligned with the steel ball receiving hole 521. Because the proximity switch is a common sensor type in the prior art, the figure only shows its installation location, and does not specifically illustrate its appearance and installation method. A cover plate 523 is removably installed at the opening of the proximity switch mounting slot 522 via bolts. This has the advantage of facilitating the maintenance and replacement of the proximity switch. By providing the proximity switch mounting slot 522, after the steel ball lifting plate 52 lifts the bulk steel ball, each steel ball receiving hole 521 can be tested for bulk steel balls. If not, the steel ball lifting plate 52 is retracted and lifted again by the lifting cylinder 51 until each steel ball receiving hole 521 has a bulk steel ball. This has the advantage of preventing the bulk steel balls from being missed in the workpiece.

[0052] like Figure 2 、 Figure 8 As shown, there are two steel ball picking mechanisms. Two first slide blocks 62 are slidably connected to the same first guide rail 14. The two steel ball picking mechanisms are symmetrically arranged on either side of the loading plate 2 along the X-axis of the operating table 11. In this embodiment, two horizontal electric cylinders 61 are symmetrically arranged and both are mounted on top of the same bracket 13. The length of the first guide rail 14 must be greater than or equal to the stroke of the two horizontal electric cylinders 61. By providing two steel ball picking mechanisms, workpieces can be loaded and unloaded from both sides of the loading plate 2, thereby improving loading and unloading efficiency.

[0053] The implementation principle of the embodiment of the present utility model is:

[0054] First, fix the workpiece in the workpiece fixing hole 21, place the loading plate 2 with the workpiece fixed on top of the three fixed field blocks 43, start the pushing cylinder 42, and the field block 43 at the output end of the pushing cylinder 42 will push the loading plate 2 and fix it between the four field blocks 43. Fix the steel ball box 3 in place through the positioning groove 411 on the limit mounting plate 41, and pour the bulk steel balls into the steel ball box 3;

[0055] Next, the lifting cylinder 51 is activated, and the steel ball lifting plate 52 passes through the through slot 31 and enters the interior of the steel ball box 3 to lift the bulk steel balls. At this time, the proximity switch detects whether there is a bulk steel ball in each steel ball receiving hole 521. If not, the lifting cylinder 51 retracts the steel ball lifting plate 52 and lifts it again until each steel ball receiving hole 521 has a bulk steel ball.

[0056] Next, the horizontal moving electric cylinder 61 drives the vertical moving electric cylinder 64 to move toward the upper material plate 2 until the steel ball picker 66 passes the steel ball lifting plate 52. The vertical moving electric cylinder 64 is activated to make the steel ball picker 66 drop to a height slightly higher than the steel ball lifting plate 52. The horizontal moving electric cylinder 61 drives the vertical moving electric cylinder 64 to move away from the material loading plate 2 so that the steel ball picker 66 can push the excess bulk steel balls on the arc surface where the steel ball receiving hole 521 is located back into the steel ball box 3. After the above steps are completed, the horizontal moving electric cylinder 61 and the vertical moving electric cylinder 64 will return to the default position, that is, the state in which the electromagnet 67 corresponds to the steel ball receiving hole 521 one by one.

[0057] Finally, the up and down moving electric cylinder 64 is started, causing the electromagnet 67 to move downward until the material picking spring 68 at the magnetic end of the electromagnet 67 contacts the bulk steel balls in the steel ball receiving hole 521. At this time, the electromagnet 67 is started, and the electromagnet 67 magnetically attracts the bulk steel balls through the material picking spring 68. The up and down moving electric cylinder 64 is started to raise the electromagnet 67, and the horizontal moving electric cylinder 61 will drive the up and down moving electric cylinder 64 to move toward the upper material plate 2, so that the electromagnet 67 is aligned with the workpiece in the workpiece fixing hole 21. The up and down moving electric cylinder 64 is started, causing the material picking connecting plate 65 and the electromagnet 67 to move downward until the bulk steel balls at the end of the material picking spring 68 enter the through hole on the surface of the workpiece, and the electromagnet 67 stops working. The horizontal moving electric cylinder 61 and the up and down moving electric cylinder 64 will return to the default position.

[0058] After the workpiece is painted, the loading plate 2 with the painted workpiece is fixed by the field block 43, and the bulk steel balls can be taken out and put back into the steel ball box 3 by moving the electric cylinder 64, the electromagnet 67 and the horizontal cylinder 61 up and down.

[0059] Repeat the above steps to complete the loading and unloading of bulk steel balls.

[0060] The above shows and describes the basic principles, main features and advantages of the present invention. The various components mentioned in the present invention are common technologies in the existing field. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in this utility model is defined by the appended claims and their equivalents.

Claims

1. A bulk steel ball loading and unloading device, comprising a base (1), wherein the base (1) is divided into an upper operating table (11) and a lower box (12), characterized in that: Also includes: A loading plate (2), wherein a plurality of workpiece fixing holes (21) are formed through the top of the loading plate (2), and the plurality of workpiece fixing holes (21) are distributed in a rectangular array on the surface of the loading plate (2); A positioning and limiting mechanism, the positioning and limiting mechanism being arranged on the top of the operating table (11), and the positioning and limiting mechanism being used to fix the loading plate (2) and move the loading plate (2) to the same position; A steel ball box (3), the steel ball box (3) is detachably arranged on the top of the operating table (11) and its position is determined by a positioning and limiting mechanism, and the steel ball box (3) is used to contain bulk steel balls; A steel ball lifting mechanism, the steel ball lifting mechanism being fixedly mounted on the top of the interior of the box (12), the steel ball lifting mechanism being capable of passing through the top wall of the box (12) and lifting the bulk steel balls in the steel ball box (3); A steel ball picking mechanism is provided on the upper side of the steel ball box (3) and can cooperate with the steel ball lifting mechanism. The steel ball picking mechanism can move relative to the X-axis direction and the Z-axis direction of the operating table (11).

2. The bulk steel ball loading and unloading device according to claim 1 is characterized in that: The positioning and limiting mechanism comprises a limiting mounting plate (41), a pushing cylinder (42) and four field blocks (43); a limiting mounting plate (41) is provided on the top of the operating table (11), a positioning groove (411) for positioning the steel ball box (3) is provided on the limiting mounting plate (41), a pushing cylinder (42) is fixedly installed on the top of the limiting mounting plate (41), and the output end of the pushing cylinder (42) is fixedly connected to the field block (43), and three field blocks (43) are fixedly installed on the top of the operating table (11), the four fields are at the same horizontal height, and the four field blocks (43) surround and fix the loading plate (2) from the four corners of the loading plate (2).

3. The bulk steel ball loading and unloading device according to claim 2 is characterized in that: The bottom wall of the steel ball box (3) is tilted downward, and a through groove (31) is provided on the bottom wall of the steel ball box (3); a chute (32) is provided at the bottom of the steel ball box (3), and a baffle (33) for closing the through groove (31) is slidably connected in the chute (32).

4. The bulk steel ball loading and unloading device according to claim 3 is characterized in that: The steel ball lifting mechanism comprises a lifting electric cylinder (51) and a steel ball lifting plate (52), wherein the lifting electric cylinder (51) is fixedly mounted on the top of the box (12), and the output end of the lifting electric cylinder (51) is fixedly connected to the steel ball lifting plate (52), and the steel ball lifting plate (52) can pass through the through slot (31) to enter the interior of the steel ball box (3), and a plurality of steel ball receiving holes (521) are provided on the top of the steel ball lifting plate (52), and the surface where the steel ball receiving holes (521) are located is an inwardly concave arc surface.

5. The bulk steel ball loading and unloading device according to claim 4 is characterized in that: The steel ball picking mechanism comprises a horizontal moving electric cylinder (61), a first slider (62), an electric cylinder connecting plate (63), an up-and-down moving electric cylinder (64), a picking connecting plate (65), a steel ball pick (66), an electromagnet (67) and a picking spring (68); a bracket (13) is provided on the top of the operating table (11); the brackets (13) are two and parallel to each other; the tops of the two brackets (13) are respectively installed with a horizontal moving electric cylinder (61) and a first guide rail (14); the top of the first guide rail (14) is slidably connected with a first slider (62); the first slider (62) and the output end of the horizontal moving electric cylinder (61) are at the same horizontal height; the first slider (62) and the output end of the horizontal moving electric cylinder (61) are at the same horizontal height; the first slider (6 2) and the output end of the horizontal moving electric cylinder (61) are commonly connected with an electric cylinder connecting plate (63), the electric cylinder connecting plate (63) is arranged along the Y-axis direction of the operating table (11), the side wall of the electric cylinder connecting plate (63) is fixedly installed with an up-and-down moving electric cylinder (64), the output end of the up-and-down moving electric cylinder (64) is fixedly connected with a material picking connecting plate (65), the side wall of the material picking connecting plate (65) is fixedly connected with a steel ball pick (66), the bottom of the material picking connecting plate (65) is installed with a plurality of electromagnets (67), the magnetic ends of the plurality of electromagnets (67) are all installed with material picking springs (68), and the electromagnets (67) correspond one to one with the steel ball receiving holes (521).

6. The bulk steel ball loading and unloading device according to claim 5, characterized in that: The steel ball picking mechanism also includes a stable lifting component, which includes a second slider (71), a second guide rail (72) and a profile (73); the side wall of the electric cylinder connecting plate (63) is fixedly connected to the second slider (71), the side wall of the second slider (71) is slidably connected to the second guide rail (72), the side wall of the second guide rail (72) is fixedly connected to the profile (73) by bolts, the bottom surface of the profile (73) and the output end of the vertically movable electric cylinder (64) are at the same horizontal height, and the bottom of the profile (73) is fixedly connected to the picking connecting plate (65) by bolts.

7. The bulk steel ball loading and unloading device according to claim 4 is characterized in that: A proximity switch installation groove (522) for installing a proximity switch is provided on the side wall of the steel ball lifting plate (52); the proximity switch installation groove (522) is internally connected to the steel ball receiving hole (521); and a cover plate (523) is installed at the opening of the proximity switch installation groove (522) by means of bolts.

8. The bulk steel ball loading and unloading device according to claim 6, characterized in that: There are two groups of stable lifting components, and the two groups of stable lifting components are symmetrically arranged on both sides of the up and down moving electric cylinder (64).

9. The bulk steel ball loading and unloading device according to claim 8, characterized in that: There are two steel ball picking mechanisms, and the two first sliders (62) are both slidably connected to the same first guide rail (14). The two steel ball picking mechanisms are symmetrically arranged on both sides of the loading plate (2) along the X-axis direction of the operating table (11).

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