Mechanical ball adding machine

Abstract

The invention discloses a mechanical ball adding machine, which comprises a frame, a ball storage bin, a material door mechanism, a flip ball claw mechanism, a reversing conveyor belt, a weighing mechanism and a control host. The ball storage bin stores grinding balls; a ball storage bin ball outlet channel is formed between the material door mechanism and the bottom plate of the ball storage bin; the flip ball claw mechanism is located at the ball storage bin ball outlet channel to grab grinding balls. The reversing conveyor belt is located at the ball unloading end of the flip ball claw mechanism to receive the grinding balls grabbed by the flip ball claw mechanism, and its conveying direction is perpendicular to the ball unloading direction of the flip ball claw. The weighing mechanism comprises a conveyor belt and a first weighing sensor; the conveyor belt is arranged below the ball dropping end of the reversing conveyor belt, the conveying direction of the conveyor belt is perpendicular to the conveying direction of the reversing conveyor belt, and the first weighing sensor carries the conveyor belt. The control host obtains the measurement value of the first weighing sensor and calculates the ball output amount of the conveyor belt.

Description

Technical Field

[0001] The invention relates to the field of ball milling equipment, in particular to a mechanical ball adding machine. Background Art

[0002] Ball mill equipment is the most widely used grinding and mixing machinery today, and is widely used in mineral processing, building materials, electricity, cement and chemical industries. The grinding process plays an important role in the entire production process, with a large investment ratio and high energy consumption ratio, which has a great impact on product quality. The work of the ball mill is to fill the grinding balls (mostly steel balls) to achieve the grinding function, and the quality of the grinding effect is achieved by the steel balls in the mill. After the ball mill starts grinding, the steel balls in the mill will wear out and the total number of balls will decrease. In order to maintain the best ball quantity and ratio, it is necessary to continuously add steel balls to maintain it.

[0003] At present, most ball mills in my country are manually added with balls, and there are various ways to add balls. The disadvantages of manual ball adding are that the amount of balls added is not accurate, and the time of adding balls is not appropriate. At the same time, with the development of large-scale ball mills, the amount of steel balls that need to be added is also increasing, and the frequency is also accelerating. It is difficult to meet the needs of grinding by simply adding balls manually. Mechanical ball adding machines have emerged.

[0004] Mechanical ball adding machines can add steel balls as needed to keep the filling rate and ball-to-material ratio of the ball mill within the required range, thereby ensuring the efficient and low-consumption operation of the ball mill and the realization of the grinding process. However, the existing mechanical ball adding machines still have some defects:

[0005] 1. The overall equipment structure is bloated, the ball discharging process is disordered, and the grinding balls are easy to get stuck;

[0006] 2. The ball warehouse has no door mechanism, and the ball warehouse cannot be protected from theft;

[0007] 3. The existing mechanical ball adding machine can only monitor the ball weight in the ball storage bin, but cannot achieve quantitative weighing output of grinding balls;

[0008] 4. The ball may get stuck when the ball is discharged or caught in the ball storage bin, which may damage the machine. Summary of the invention

[0009] The purpose of the present invention is to provide a mechanical ball adding machine which is compact and practical.

[0010] To achieve the above object, the present invention adopts the following technical solutions:

[0011] A ball storage bin, which is arranged in the frame and is used to store grinding balls;

[0012] A material door mechanism is arranged in the ball storage bin and forms a ball storage bin outlet channel with the bottom plate of the ball storage bin;

[0013] A flip ball claw mechanism is arranged in the frame and located at the ball outlet passage of the ball storage bin to grab the grinding balls;

[0014] A reversing conveyor belt, which is arranged in the frame and located at the ball unloading end of the flip ball claw mechanism to receive the grinding balls grasped by the flip ball claw mechanism, and whose conveying direction is perpendicular to the ball unloading direction of the flip ball claw;

[0015] The weighing mechanism comprises a conveyor belt and a first weighing sensor; the conveyor belt is arranged below the ball-dropping end of the reversing conveyor belt, and the conveying direction of the conveyor belt is perpendicular to the conveying direction of the reversing conveyor belt; the first weighing sensor carries the conveyor belt;

[0016] The control host obtains the measurement value of the first weighing sensor and calculates the ball output of the conveyor belt.

[0017] Preferably, it also includes a warehouse door and a warehouse door opening and closing mechanism; the warehouse doors are a pair, covering the warehouse opening of the ball storage warehouse; the warehouse door opening and closing mechanism includes a push-pull device, a push block, a pair of swing rods and a pair of swing arms, the push-pull device pushes and pulls the push block up and down, one end of the pair of swing arms are respectively fixedly connected to the outer edge of the pair of warehouse doors, the other end of the pair of swing arms is hinged on the frame, one end of the pair of swing rods are respectively fixedly connected to the hinged end of the pair of swing arms, the other end of the pair of swing rods are respectively connected to the two ends of the push block through strip holes so that they can be rotatably and slidably connected; the pair of warehouse doors are opened and closed in a double-door manner under the drive of the warehouse door opening and closing mechanism.

[0018] Preferably, the material door mechanism includes a base plate, a rotating plate and an angle adjuster, the base plate is fixed in the ball storage bin, the base plate has a protrusion pointing to the ball storage side of the ball storage bin; the rotating plate is hinged on the lower edge of the protrusion, and the ball storage bin outlet channel is formed between the rotating plate and the bottom plate; the angle adjuster is arranged between the base plate and the rotating plate and is located on the ball outlet side, and the angle adjuster adjusts the angle between the base plate and the rotating plate to adjust the opening degree of the ball outlet channel.

[0019] Preferably, it also includes a length adjustment plate, and the length adjustment plate is slidably and adjustably connected to the rotating plate through a strip hole.

[0020] Preferably, the angle adjuster is a telescopic rod, one end of which is hinged to the base plate, and the other end of which is hinged to the rotating plate.

[0021] Preferably, the flip ball claw mechanism includes a flip ball claw and a driving device, the flip ball claw includes a rotating shaft and a plurality of comb teeth arranged side by side along the axial direction of the rotating shaft, each comb tooth plate has a plurality of comb teeth arranged along its radial circumference, each comb tooth has a V-shaped groove to grab the grinding balls, and the driving device drives the rotating shaft to rotate; the ball storage bin has a bottom plate, the reversing conveyor belt has a ball receiving plate, and the bottom plate and the ball receiving plate are both provided with comb grooves adapted to each comb tooth plate.

[0022] Preferably, each comb tooth piece is detachably connected to the rotating shaft by a key connection, and adjacent comb tooth pieces are spaced apart by a sleeve.

[0023] Preferably, the flip ball claw mechanism further comprises a limiting device to limit the flipping angle of the flip ball claw each time; at each limiting node, the outer groove edge of the V-shaped groove away from the rotating shaft is higher than the comb groove on the bottom plate.

[0024] Preferably, the reversing conveyor belt also includes a track width adjustment plate, which is parallel to the reversing conveyor belt and perpendicular to the conveying surface of the reversing conveyor belt; the track width adjustment plate is fixed to the frame by a screw, and the extension length of the screw is adjusted to adjust the effective width of the conveying surface.

[0025] Preferably, the weighing mechanism further comprises a second weighing sensor, the second weighing sensor supports the frame, and the control host obtains the measurement value of the second weighing sensor to obtain the grinding ball surplus of the whole machine.

[0026] After adopting the above technical solution, the present invention has the following advantages compared with the background technology:

[0027] 1. The present invention optimizes the position arrangement of each functional mechanism and sets a reversing conveyor belt, so that the balls caught by the ball claws are first arranged in order on the reversing conveyor belt and then output in order through the conveyor belt. Secondly, the equipment structure is more compact.

[0028] 2. The present invention is provided with a warehouse door and an electrically controlled warehouse door opening and closing mechanism, which can effectively prevent theft;

[0029] 3. The present invention uses the first weighing sensor to weigh the ball storage amount on the conveyor belt, which can sensitively control the ball output amount and realize the quantitative output of grinding balls. The ball adding accuracy can reach ±0.5%. At the same time, the ball adding method is diversified: a. The balls can be quantitatively fed in time periods (such as an interval of 12-15 minutes or other set time) by controlling the timing function of the host; b. The ball adding amount can also be adjusted to the ore amount and added in time, such as setting the ball adding amount according to the ton of ore ball consumption.

[0030] 4. In the present invention, the base plate has a protrusion pointing to the ball storage side, which is arranged so that the protrusion plays a supporting role for the grinding balls; and the rotating plate is hinged at the lower edge of the protrusion, which plays a role in orderly guiding the grinding balls and adjusting the size of the ball outlet channel, and effectively prevents ball blockage by sharing the pressure of the grinding balls and orderly guiding them through the material gate;

[0031] 5. The comb teeth of the flip ball claw of the present invention are arranged side by side, which can adapt to various ball shapes, including hemispheres, and effectively prevent the ball from being stuck. At the same time, the comb teeth and the rotating shaft are split structures, and each comb tooth piece is sleeved on the rotating shaft and connected by a key. The comb teeth can be formed uniformly and the cost is low. The individually formed comb teeth have high strength and good fatigue resistance. The comb teeth are easy to repair when damaged. The comb teeth can be replaced according to the actual ball catching needs.

[0032] 6. The weighing mechanism of the present invention is also provided with a second weighing sensor, which can obtain the remaining grinding balls of the whole machine. Through the cooperation between the second weighing sensor and the first weighing sensor, it is more conducive to obtaining various production report information, such as: a. The amount of balls in the whole machine can be obtained, so as to decide whether to add balls to the ball storage bin; b. The amount of balls in the whole machine can be obtained through the second weighing sensor, and the amount of balls added during the shift can be obtained through the first weighing sensor. The combination of the two can calculate the number of shifts in which the required grinding balls are consumed; c. Through the mutual verification of the data of the second weighing sensor and the first weighing sensor, it can be verified whether the grinding balls are stolen; d. The amount of balls added over a period of time, such as one day or one month, can be calculated. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the structure of a complete machine of the present invention (including the control host);

[0034] Figure 2 This is a schematic diagram of the structure of the whole machine of the present invention (the outer cover of the control host and the door opening and closing mechanism is hidden);

[0035] Figure 3 for Figure 2 Detailed view of point A in the middle;

[0036] Figure 4 This is another schematic diagram of the whole machine structure of the present invention (the control host and part of the cover are hidden, and the door and the door opening and closing mechanism are not included);

[0037] Figure 5 This is another top view of the whole machine of the present invention (the control host and part of the cover are hidden, and the door and the door opening and closing mechanism are not included);

[0038] Figure 6 This is another structural diagram of the present invention (the control host and part of the cover plate are hidden, and the door and the door opening and closing mechanism are not included);

[0039] Figure 7This is a schematic diagram of the material door mechanism of the present invention;

[0040] Figure 8 This is a schematic diagram of the flip ball claw of the present invention;

[0041] Fig. 9 It is a schematic diagram of the comb teeth of the present invention;

[0042] Fig.10 It is a schematic diagram of the limiting device of the present invention;

[0043] Fig.11 This is another structural diagram of the present invention (the control host and part of the cover are hidden, but the door and the door opening and closing mechanism are not included).

[0044] Description of reference numerals:

[0045] Rack 1;

[0046] Ball storage bin 2, bin door 21, bottom plate 22, combing groove 221;

[0047] The material door mechanism 3, the base plate 31, the inclined plate 311, the vertical plate 312, the rotating plate 32, the angle adjuster 33, the threaded tube 331, the through hole 3311, the two reverse bolts 332, the length adjustment plate 34, and the loose ball vibration device 35;

[0048] Flip ball claw mechanism 4, rotating shaft 41, comb tooth piece 42, comb teeth 421, V-shaped groove 422, groove edge 4221, groove edge 4222, sleeve 43, motor 44, chain transmission group 45, limit device 46, travel switch 461, limit plate 462, limit groove 4621;

[0049] Reversing conveyor belt 5, ball receiving plate 51, combing groove 511, track width adjustment plate 52;

[0050] Weighing mechanism 6, conveyor belt 61, first weighing sensor 62, ball outlet groove 63, hollow portion 631, ball outlet 632, second weighing sensor 64;

[0051] The door opening and closing mechanism 7, the push-pull device 71, the reduction motor 711, the guide rod 712, the screw rod 713, the screw rod nut 714, a push block 72, a pair of swing rods 73, and a pair of swing arms 74;

[0052] Control host 8. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0054] It should be noted that in the present invention, the terms "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element of the present invention must have a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0055] Example

[0056] Please refer to Figure 1 , Figure 2 and Figure 4 As shown, the present invention discloses a mechanical ball adding machine, which includes a frame 1, a ball storage bin 2, a material door mechanism 3, a flip ball claw mechanism 4, a reversing conveyor belt 5, a weighing mechanism 6, a bin door opening and closing mechanism 7 and a control host 8.

[0057] Please refer to Figure 3 As shown, the ball storage bin 2 is used to store grinding balls. To prevent the grinding balls from being stolen, the ball storage bin 2 is preferably provided with bin doors 21. The bin doors 21 are a pair and are located above the bin opening of the ball storage bin 2 to close the bin opening.

[0058] The door opening and closing mechanism 7 includes a push-pull device 71, a push block 72, a pair of swing rods 73 and a pair of swing arms 74. The push-pull device 71 pushes and pulls the push block 72 up and down. One end of the pair of swing arms 73 is fixedly connected to the outer edges of the pair of doors 21, and the other end is hinged on the frame 1. One end of the pair of swing rods 73 is fixedly connected to the hinged ends of the pair of swing arms 74, and the other end of the pair of swing rods 73 is rotatably and slidably connected to the two ends of the push block 72 through the bar holes 731.

[0059] In this embodiment, the push-pull device 71 is a screw drive pair, which includes a reduction motor 711, two guide rods 712, a screw 713 and a screw nut 714. The screw nut 714 is arranged on the push block 72, the two guide rods 712 guide the push block 72, and the reduction motor 711 drives the screw 713 to rotate forward and reverse to drive the push block 72 up and down, thereby driving the swing arm 73. In this embodiment, the swing arm 74 is L-shaped, and under the action of the swing arm 73, it swings along its hinge joint, so that a pair of warehouse doors can be opened and closed in a double-door manner.

[0060] Please refer to Figure 4 , Figure 5 and Figure 6As shown, the ball storage bin 2 has a bottom plate 22, and the end of the bottom plate 22 facing away from the flip ball claw 4 is higher than the end close to the flip ball claw 4. The material door mechanism 3 is arranged in the ball storage bin 2, and a ball storage bin outlet passage is formed between the material door mechanism 3 and the bottom plate 22 of the ball storage bin 2. The flip ball claw mechanism 4 is arranged at the ball storage bin outlet passage to grab the grinding balls. The reversing conveyor belt 5 is arranged at the ball unloading end of the flip ball claw mechanism 4 to receive the grinding balls grabbed by the flip ball claw mechanism 4, and its conveying direction is perpendicular to the ball unloading direction of the flip ball claw 4.

[0061] Specifically, please refer to Figure 3 and Figure 4 As shown, the material door mechanism 3 includes a base plate 31, a rotating plate 32 and an angle adjuster 33. The base plate 31 is fixed in the ball storage bin 2. The base plate 31 has a protrusion pointing to the ball storage side of the ball storage bin 2. The protrusion has an inclined plate 311 inclined downward toward the ball storage side and a vertical plate 312 connected to the lower edge of the inclined plate 311. The protrusion can support the grinding balls. The rotating plate 32 is hinged at the lower edge of the protrusion, specifically, at the lower edge of the vertical plate 312. The angle adjuster 33 is arranged between the base plate 31 and the rotating plate 32, and is located on the ball outlet side. In this way, a ball outlet channel is formed between the bottom plate 22 and the rotating plate 32. The opening degree of the ball outlet channel can be adjusted by adjusting the angle between the base plate 31 and the rotating plate 32 through the angle adjuster 33.

[0062] Please refer to Figure 4 As shown, in this embodiment, the angle adjuster 33 is a telescopic rod, which includes a threaded tube 331 and two reverse bolts 332. Reverse threads are provided at both ends of the threaded tube 331. One end of the two reverse bolts 332 is screwed into the threaded tube 331, and the other end is a hinged joint to achieve hinged connection with the base plate 31 / rotating plate 32.

[0063] In order to facilitate the adjustment of the telescopic length, a through hole 3311 is provided on the tube wall of the threaded tube 331 , so that a tool (such as a screwdriver) can be inserted into the through hole 3311 for quick adjustment.

[0064] In order to achieve multi-dimensional adjustment and more flexibly adapt to the ball output requirements of different ball diameters, the material door mechanism 3 also includes a length adjustment plate 34, which is installed on the rotating plate 32, and the length adjustment plate 34 is slidably and adjustably connected to the rotating plate 32 through a strip hole.

[0065] To further prevent ball blocking, the material door mechanism 3 further includes a loose ball vibration device 35, and the loose ball vibration device 35 is arranged below the bottom plate 22. In this embodiment, the loose ball vibration device 35 is a vibration motor.

[0066] Please refer to Figure 5 and Figure 6As shown, the ball flipping claw 4 includes a rotating shaft 41 and a plurality of comb teeth 42 arranged in parallel along the axial direction of the rotating shaft 41, and each comb tooth 42 has a plurality of comb teeth 421 arranged in a radial circumferential array. The reversing conveyor belt 5 has a ball receiving plate 51, and the bottom plate 22 and the ball receiving plate 51 are respectively provided with comb grooves 221 and comb grooves 511 corresponding to each comb tooth 42.

[0067] Please refer to Figure 6 , Figure 7 , Figure 8 , Fig. 9 As shown, each comb-tooth piece 42 is detachably connected to the rotating shaft 41 by a key connection, and adjacent comb-tooth pieces 42 are spaced apart by a sleeve 43. In this embodiment, the number of comb teeth of each comb-tooth piece 42 is 3. Each comb-tooth piece 42 has a V-shaped groove 422 for grabbing grinding balls, and the number of balls grabbed depends on the length of the groove edge (i.e., groove edge 4221) of the V-shaped groove 422 close to the rotating shaft.

[0068] The driving device drives the rotating shaft 41 to rotate. In this embodiment, the driving device includes a motor 44 and a chain transmission group 45 .

[0069] Please refer to Figure 7 and Fig.10 As shown, the limit device 46 includes a travel switch 461 and a limit plate 462. The limit plate 462 is key-connected to the rotating shaft 41 to rotate therewith. A plurality of limit grooves 4621 are provided on the outer circumference of the limit plate 462, and the roller of the travel switch 461 abuts against the outer circumference of the limit plate 462. In this way, whenever the limit plate 462 rotates to the position where the limit groove 4621 and the roller of the travel switch 461 are adapted, the roller of the travel switch 461 falls into the limit groove 4621 and sends a stop signal, thereby limiting the angle of each flip of the flip ball claw. In this embodiment, there are four limit grooves 4621.

[0070] To prevent the grinding balls from being jammed on the flip ball claws and ensure smooth ball catching, at each limiting node, the outer groove edge (ie groove edge 4222 ) of the V-shaped groove 422 away from the rotating shaft is higher than the comb groove 221 on the bottom plate 22 .

[0071] Please refer to Figure 6 and Fig.11 As shown, for the convenience of conveying, the reversing conveyor belt 5 includes a plurality of parallel conveyor chains, and a channel for conveying the grinding balls is formed between adjacent conveyor chains. The advantage of using chain conveying is that the grinding balls will not roll by themselves, and the orderly conveying of the grinding balls can be controlled by the chain.

[0072] In order to adapt to the size of the grinding balls and arrange the grinding balls in order, the reversing conveyor belt 5 also includes a track width adjustment plate 52, which is parallel to the conveying direction of the reversing conveyor belt 5 and perpendicular to the conveying surface of the reversing conveyor belt 5. The track width adjustment plate is fixed to the frame by a screw rod 52, and the extended length of the screw rod 53 is adjusted to move the movable track width adjustment plate 52, thereby adjusting the effective width of the conveying surface.

[0073] The weighing mechanism 6 includes a conveyor belt 61, a first weighing sensor 62, a ball outlet groove 63 and a second weighing sensor 64. The conveyor belt 61 is arranged below the ball drop end of the reversing conveyor belt 5 to receive the grinding balls output by the reversing conveyor belt 5, and its conveying direction is perpendicular to the conveying direction of the reversing conveyor belt 5. The bottom of the ball outlet groove 63 is provided with a hollow portion 631 and a ball outlet 632; the conveyor belt 61 carries the ball outlet groove 63, and its conveying surface is located in the hollow portion 631 of the ball outlet groove 63, so as to send the received grinding balls to the ball outlet 632 for output to the ball mill.

[0074] The first weighing sensor 62 is used to support the conveyor belt 61 (in this embodiment, there are two first weighing sensors, which are distributed below the base of the conveyor belt 61). In this way, the control host 8 can accurately obtain the amount of balls on the conveyor belt 61 by reading the measurement value of the first weighing sensor 62, and can add balls to the ball mill in a quantitative manner through the orderly output of the conveyor belt.

[0075] In this embodiment, the conveyor belt 61 realizes orderly output through chains, and includes a plurality of conveyor chains arranged in parallel, and channels for conveying grinding balls are formed between adjacent conveyor chains.

[0076] The second weighing sensors 64 (four in this embodiment) are arranged at the four corners of the bottom of the frame 1 to support the frame 1. Thus, the control host 8 can obtain the amount of balls in the whole machine by reading the measured value of the second weighing sensor 64, thereby deciding whether to add balls to the ball storage bin 2.

[0077] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A mechanical ball adding machine, comprising a frame, characterized in that: Also includes: A ball storage bin, which is arranged in the frame and is used to store grinding balls; A material door mechanism is arranged in the ball storage bin and forms a ball storage bin outlet channel with the bottom plate of the ball storage bin; A flip ball claw mechanism is arranged in the frame and located at the ball outlet channel of the ball storage bin to grab the grinding balls; the flip ball claw mechanism includes a flip ball claw and a driving device, the flip ball claw includes a rotating shaft and a plurality of comb teeth arranged in a parallel array along the axial direction of the rotating shaft, each comb tooth piece has a plurality of comb teeth arranged in a radial circumferential array, each comb tooth has a V-shaped groove to grab the grinding balls, and the driving device drives the rotating shaft to rotate; A reversing conveyor belt is arranged in the frame and located at the ball unloading end of the flip ball claw mechanism to receive the grinding balls grasped by the flip ball claw mechanism, and its conveying direction is perpendicular to the ball unloading direction of the flip ball claw; the reversing conveyor belt also includes a track width adjustment plate, the track width adjustment plate is parallel to the reversing conveyor belt and perpendicular to the conveying surface of the reversing conveyor belt; the track width adjustment plate is fixed to the frame by a screw rod, and the extension length of the screw rod is adjusted to adjust the effective width of the conveying surface; The ball storage bin has a bottom plate, the reversing conveyor belt has a ball receiving plate, and the bottom plate and the ball receiving plate are both provided with combing grooves adapted to the combing teeth; the flipping ball claw mechanism also includes a limiting device to limit the flipping angle of the flipping ball claw each time; at each limiting node, the outer groove edge of the V-shaped groove away from the rotating shaft is higher than the combing groove on the bottom plate; The weighing mechanism comprises a conveyor belt and a first weighing sensor; the conveyor belt is arranged below the ball-dropping end of the reversing conveyor belt, and the conveying direction of the conveyor belt is perpendicular to the conveying direction of the reversing conveyor belt; the first weighing sensor carries the conveyor belt; The control host obtains the measurement value of the first weighing sensor and calculates the ball output of the conveyor belt.

2. The mechanical ball adding machine as claimed in claim 1, characterized in that: It also includes warehouse doors and warehouse door opening and closing mechanisms; the warehouse doors are a pair, covering the warehouse openings of the ball storage warehouse; the warehouse door opening and closing mechanism includes a push-pull device, a push block, a pair of swing rods and a pair of swing arms, the push-pull device pushes and pulls the push block up and down, one end of the pair of swing arms are respectively fixedly connected to the outer edges of a pair of warehouse doors, the other end of the pair of swing arms is hinged on the frame, one end of the pair of swing rods are respectively fixedly connected to the hinged ends of the pair of swing arms, the other end of the pair of swing rods are respectively rotatably and slidably connected to the two ends of the push block through strip holes; the pair of warehouse doors are opened and closed in a double-door manner under the drive of the warehouse door opening and closing mechanism.

3. The mechanical ball adding machine as claimed in claim 1, characterized in that: The material door mechanism includes a base plate, a rotating plate and an angle adjuster, the base plate is fixed in the ball storage bin, the base plate has a protrusion pointing to the ball storage side of the ball storage bin; the rotating plate is hinged at the lower edge of the protrusion, and the ball storage bin outlet channel is formed between the rotating plate and the bottom plate; the angle adjuster is arranged between the base plate and the rotating plate and is located on the ball outlet side, and the angle adjuster adjusts the opening angle between the base plate and the rotating plate to adjust the opening degree of the ball outlet channel.

4. The mechanical ball adding machine as claimed in claim 3, characterized in that: It also includes a length adjustment plate, and the length adjustment plate is connected to the rotating plate through a strip hole so as to be slidably adjustable.

5. The mechanical ball adding machine as claimed in claim 3, characterized in that: The angle adjuster is a telescopic rod, one end of which is hinged to the base plate, and the other end of which is hinged to the rotating plate.

6. The mechanical ball adding machine as claimed in claim 1, characterized in that: Each comb tooth piece is detachably connected to the rotating shaft by a key connection, and adjacent comb tooth pieces are spaced apart by a sleeve.

7. The mechanical ball adding machine as claimed in claim 1, characterized in that: The weighing mechanism further comprises a second weighing sensor, the second weighing sensor supports the frame, and the control host obtains the measurement value of the second weighing sensor to obtain the grinding ball surplus of the whole machine.

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