Automatic bag replacing machine for dry-mixed mortar bagging
阅读说明:本技术 一种干混砂浆袋装用自动换袋机 (Automatic bag replacing machine for dry-mixed mortar bagging ) 是由 强晓震 桂学军 于 2020-05-31 设计创作,主要内容包括:本发明涉及自动换袋技术领域,具体涉及一种干混砂浆袋装用自动换袋机,包括底座和搭载架,还包括控制器、出料顶板、支载柱、输送机构和旋转机构,所述搭载架设置于底座上用以支持出料顶板,所述控制器设置于底座顶部,所述出料顶板设置于搭载架顶部,所述支载柱设置于底座上,所述输送机构设置于支载柱旁侧的底座上用以立式输送砂浆袋,所述输送机构包括支座、驱动组件和两组传动装置,所述旋转机构设置于支载柱上用以带动并更换砂浆袋,所述旋转机构包括转动装置和四组内撑装置,本发明通过将批量水泥袋外翻抵紧至夹道内并操作控制器,即可对干混砂浆包装袋进行自动更换,操作方便,安全高效,极大提高了干混砂浆的打包时换袋效率。(The invention relates to the technical field of automatic bag replacement, in particular to an automatic bag replacement machine for dry-mixed mortar bags, which comprises a base, a carrying frame, a controller, a discharging top plate, a carrying column, a conveying mechanism and a rotating mechanism, wherein the carrying frame is arranged on the base and used for supporting the discharging top plate, the controller is arranged at the top of the base, the discharging top plate is arranged at the top of the carrying frame, the carrying column is arranged on the base, the conveying mechanism is arranged on the base beside the carrying column and used for vertically conveying the mortar bags, the conveying mechanism comprises a support, a driving assembly and two groups of transmission devices, the rotating mechanism is arranged on the carrying column and used for driving and replacing the mortar bags, the rotating mechanism comprises a rotating device and four groups of internal supporting devices, the invention can automatically replace the mortar bags by turning up-turning and tightly pressing batch cement bags into a clamping channel and operating the controller, convenient operation, safety and high efficiency, and greatly improves the bag changing efficiency during the packing of the dry-mixed mortar.)
1. An automatic bag replacing machine for dry-mixed mortar bagging comprises a base (1) and a carrying frame (2), and is characterized by further comprising a controller (3), a discharging top plate (4), a supporting column (5), a conveying mechanism (6) and a rotating mechanism (7), wherein the carrying frame (2) is arranged on the base (1) and used for supporting the discharging top plate (4), the carrying frame (2) is fixedly connected with the base (1), the controller (3) is arranged on one side of the top of the base (1), the discharging top plate (4) is arranged on the top of the carrying frame (2) and fixedly connected with the carrying frame (2), the supporting column (5) is arranged on the base (1) and fixedly connected with the base (1), the supporting column (5) is located right below the discharging top plate (4), the conveying mechanism (6) is arranged on the base (1) of the supporting column (5) and used for vertically conveying mortar bags beside, the conveying mechanism (6) comprises a support (60), a driving assembly (61) and two groups of transmission devices (62), the support (60) is fixedly arranged on the base (1) and positioned beside the controller (3), the two groups of transmission devices (62) are symmetrically and fixedly arranged on two sides of the top of the support (60), the driving component (61) is fixedly arranged on the base (1) and is positioned beside the transmission device (62), the driving component (61) is fixedly connected with two groups of transmission devices (62), the rotating mechanism (7) is arranged on the supporting column (5) for driving and replacing the mortar bag, the rotating mechanism (7) comprises a rotating device (70) and four groups of inner supporting devices (71), the rotating device (70) is arranged in the middle of the supporting plate and is connected with the supporting column (5) in a sliding way, the four groups of internal supporting devices (71) are arranged on the outer edge of the rotating device (70) in an annular array and are fixedly connected with the rotating device (70).
2. The automatic bag-changing machine for dry-mixed mortar bags according to claim 1, wherein two sets of the transmission devices (62) have the same structure and size, each set of the transmission devices (62) comprises a conveying belt (620), a linkage belt (621), a first supporting seat (622), a second supporting seat (623), three sets of rollers (624) and a plurality of sets of abutting components (625), the first supporting seat (622) and the second supporting seat (623) are symmetrically and fixedly arranged at two ends of the top of the support (60), the three sets of the rollers (624) have the same structure and size, one roller (624) is rotatably arranged at the top of the first supporting seat (622), the other two rollers (624) are rotatably arranged at the top and the bottom of the second supporting seat (623), a discharging seat (10) is arranged beside the first supporting seat (622), and the discharging seat (10) is fixedly connected with the base (1), first supporting seat (622) and second supporting seat (623) homonymy are fixed and are equipped with limiting plate (626), fixed install bin (627) that is equipped with in first supporting seat (622) bottom, install bin (627) inside fixed proximity sensor (628) that is equipped with, proximity sensor (628) and controller (3) are electric connection.
3. The automatic bag changing machine for dry-mixed mortar bagging of claim 2, wherein each roller (624) is provided with a first raceway (6240) and a second raceway (6241), the transmission belt is rotatably sleeved in the first roller path (6240) of the three groups of rollers (624), and one side of the conveying belt (620) close to the second roller path (6241) is uniformly provided with a plurality of upright posts (6200), one ends of the upright posts (6200) are fixedly connected with the conveying belt (620), the linkage belt (621) is rotatably sleeved in the second roller path (6241) of the three groups of rollers (624), the other ends of the plurality of upright posts (6200) are fixedly connected with one side of the linkage belt (621), the other side of the linkage belt (621) is provided with a clamping track (6210), and the outside of the linkage belt (621) is provided with a plurality of through grooves (6211) communicated with the clamping channel (6210), and the plurality of abutting components (625) are arranged in one-to-one correspondence with the plurality of through grooves (6211).
4. The automatic bag changing machine for bagging dry-mixed mortar of claim 3, wherein each group of the abutting assemblies (625) comprises a lifting rod (6250), a pressure plate (6251) and a return spring (6252), one end of each lifting rod (6250) passes through the corresponding through groove (6211) and extends into the clamping channel (6210), the pressure plate (6251) is arranged in the clamping channel (6210) and is fixedly connected with the lifting rod (6250), one end of each return spring (6252) is welded to the top of the inner wall of the clamping channel (6210), the other end of each return spring (6252) is welded to the pressure plate (6251), and the return spring (6252) is sleeved on the lifting rod (6250) extending into the clamping channel (6210).
5. The automatic bag-changing machine for dry-mixed mortar bagging according to claim 4, wherein the driving assembly (61) comprises a first machine base (610), a stepping motor (611), a rotating shaft (612) and a protection box (613), the first machine base (610) is fixedly arranged on the base (1) through bolts and is positioned beside the second support group, the stepping motor (611) is fixedly arranged on the first machine base (610) in a horizontal state, an output shaft of the first motor is fixedly connected with one end of the rotating shaft (612) through a coupling, the other end of the rotating shaft (612) is fixedly connected with corresponding rollers (624) at the bottoms of the two groups of second support seats (623), the protection box (613) is fixedly arranged at the top of the support (60) and is positioned between the two groups of second support seats (623), and the rotating shaft (612) passes through the protection box (613) and is rotatably connected with the protection box (613), the stepping motor (611) is electrically connected with the controller (3).
6. The automatic bag changing machine for dry-mixed mortar bagging according to claim 5, wherein the two sides of the supporting column (5) are symmetrically provided with column holes (50), the bottom of the outer part of the supporting column (5) is fixedly provided with a ring channel (51), the rotating device (70) comprises a second base (700), a servo motor (701), a rotating rod (702), a chassis (703), a first end face ring rack (704), a second end face ring rack (705), a rotating cylinder column (706) and two groups of linkage assemblies (707), the second base (700) is fixedly arranged at the top of the discharging top plate (4) through bolts, the servo motor (701) is fixedly arranged on the second base (700) in an inverted state, an output shaft of the servo motor (701) is fixedly connected with one end of the rotating rod (702) through a coupler, and the other end of the rotating rod (702) penetrates through the inner part of the supporting column (5) and is rotatably connected with the base (1), the servo motor (701) is electrically connected with the controller (3).
7. The automatic bag-changing machine for dry-mixed mortar bagging of claim 6, wherein the bottom plate (703) is arranged in the middle of the inside of the supporting column (5), the bottom plate (703) is fixedly connected with the rotating rod (702), the first end face circular rack (704) is fixedly arranged at the top of the outer edge of the bottom plate (703), the rotating cylinder (706) is sleeved outside the supporting column (5), the bottom of the rotating cylinder (706) is slidably connected with the loop (51), the second end face circular rack (705) is fixedly arranged at the top of the outer edge of the rotating cylinder (706), the first end face circular rack (704) and the second end face circular rack (705) are positioned in the same horizontal plane, one side of the supporting column (5) is provided with a 90-degree bending roller conveying frame (11), one side of the 90-degree bending roller conveying frame (11) is fixedly provided with a three-phase asynchronous motor (12), the output shaft of the three-phase asynchronous motor (12) is fixedly connected with the roller (624) inside the 90-degree roller bending conveying frame (11) through a coupler, and the three-phase asynchronous motor (12) is electrically connected with the controller (3).
8. The automatic bag replacing machine for dry-mixed mortar bagging according to claim 7, wherein two groups of linkage assemblies (707) are identical in structure size and are symmetrically arranged on two sides of a supporting column (5), each group of linkage assemblies (707) comprises a bevel gear (7070), a linkage shaft (7071) and a straight gear (7072), the bevel gear (7070) is arranged inside the supporting column (5), the bevel gear (7070) is meshed with a first end face annular rack (704), one end of the linkage shaft (7071) is fixedly connected with the bevel gear (7070), the other end of the linkage shaft (7071) penetrates through a corresponding shaft hole to be fixedly connected with the straight gear (7072), and the straight gear (7072) is meshed with a second end face annular rack (705).
9. The automatic bag changing machine for dry-mixed mortar bagging according to claim 8, wherein four groups of sliding holes (7060) are uniformly arranged at the top of the rotary cylinder (706) in an array manner, the four groups of sliding holes (7060) are arranged in one-to-one correspondence with four groups of inner supporting devices (71), each group of inner supporting devices (71) comprises a lower supporting plate (710), an upper supporting plate (711), a fixing plate (712), a first push rod (713), a second push rod (714) and an inner supporting assembly (715), the lower supporting plate (710) is fixedly arranged at one side of the outer portion of the rotary cylinder (706), the first push rod (713) is fixedly arranged on the lower supporting plate (710) in a vertical manner, one end of the bottom of the upper supporting plate (711) is positioned in the corresponding sliding hole (7060), the upper supporting plate (711) is connected with the rotary cylinder (706) in a sliding manner through the sliding hole (7060), and an output shaft of the first push rod (713) is fixedly connected with the bottom of the upper supporting plate (711), the fixing plate (712) is fixedly arranged at the top of the upper support plate (711), the second push rod (714) is fixedly arranged on the upper support plate (711) in an inverted shape, and the first push rod (713) and the second push rod (714) are electrically connected with the controller (3).
10. The automatic bag-changing machine for dry-mixed mortar bagging according to claim 9, the inner support component (715) is arranged at the bottom of the upper support plate (711), the inner support component (715) comprises an outer rod (7150), an inner rod (7151), two groups of sliding rods (7152) and two groups of inner support outer arms (7153), the top end of the outer rod (7150) is fixedly arranged at the bottom of the upper support plate (711), the two groups of support outer arms are symmetrically hinged at two sides of the outer rod (7150), and one side of the two groups of supporting outer arms opposite to each other is provided with a sliding groove (7154), the output shaft of the second push rod (714) passes through the outer rod (7150) and is fixedly connected with the inner rod (7151), the inner rod (7151) is arranged between two groups of inner support outer arms (7153), one ends of two groups of sliding rods (7152) are symmetrically hinged on two sides of the inner rod (7151), and the other ends of the two groups of sliding rods (7152) are respectively arranged in the corresponding sliding grooves (7154) in a sliding way.
Technical Field
The invention relates to the technical field of automatic bag replacement, in particular to an automatic bag replacement machine for dry-mixed mortar bagging.
Background
The quality of the dry-mixed mortar packaging bag directly influences the quality guarantee period and the use condition of the dry-mixed mortar, the raw material of a common cement woven bag is polypropylene resin, the raw material is mainly polyethylene produced abroad, then a certain additive is added, the cement woven bag is subjected to heating wire drawing, weaving, lettering and the like, and the cement woven bag with higher quality is internally provided with a lining.
At present, when various large dry-mixed mortar manufacturers produce, part of the formed dry-mixed mortar is stored in a storage tank for taking out when the dry-mixed mortar is ready for future use, and part of the formed dry-mixed mortar is taken out and packaged for direct transportation to use.
Disclosure of Invention
The invention aims to provide an automatic bag replacing machine for bagging dry-mixed mortar.
In order to achieve the purpose, the invention adopts the following technical scheme:
the automatic bag replacing machine for dry-mixed mortar bags comprises a base, a carrying frame, a controller, a discharging top plate, a carrying column, a conveying mechanism and a rotating mechanism, wherein the carrying frame is arranged on the base and used for supporting the discharging top plate, the carrying frame is fixedly connected with the base, the controller is arranged on one side of the top of the base, the discharging top plate is arranged on the top of the carrying frame and fixedly connected with the carrying frame, the carrying column is arranged on the base and fixedly connected with the base, the carrying column is positioned right below the discharging top plate, the conveying mechanism is arranged on the base beside the carrying column and used for vertically conveying mortar bags, the conveying mechanism comprises a support, a driving assembly and two groups of transmission devices, the support is fixedly arranged on the base and positioned beside the controller, the two groups of transmission devices are symmetrically and fixedly arranged on two sides of the top of the support, the driving assembly is fixedly arranged on the base and positioned beside the transmission devices, the driving assembly is fixedly connected with the two groups of transmission devices, the rotating mechanism is arranged on the supporting column and used for driving and replacing the mortar bag, the rotating mechanism comprises a rotating device and four groups of inner supporting devices, the rotating device is arranged in the middle of the supporting plate and is in sliding connection with the supporting column, and the four groups of inner supporting devices are arranged at the outer edge of the rotating device in an annular array and are fixedly connected with the rotating device.
Further, it is two sets of transmission structure size is the same, every group transmission includes conveyer, interlock area, first supporting seat, second supporting seat, three gyro wheels of group and a plurality of group support tight subassembly, first supporting seat and second supporting seat symmetry are fixed to be set up in support top both ends, and three groups gyro wheel structure size is the same, one the gyro wheel rotates to be set up in the top of first supporting seat, two in addition the gyro wheel rotates and sets up in the top and the bottom of second supporting seat, first supporting seat side is equipped with the blowing seat, blowing seat and base fixed connection, first supporting seat is equipped with the limiting plate with the fixed of second supporting seat homonymy, the fixed install bin that is equipped with in first supporting seat bottom, the inside fixed proximity sensor that is equipped with of install bin, proximity sensor is electric connection with the controller.
Further, every be equipped with first raceway and second raceway on the gyro wheel, driving belt rotates the cover and locates in the first raceway of three group's gyro wheels to one side that driving belt is close to the second raceway evenly is equipped with a plurality of stands, and is a plurality of the one end and the driving belt fixed connection of stand, the interlock area rotates the cover and locates in the second raceway of three group's gyro wheels to the other end and the equal fixed connection in interlock area one side of a plurality of stands, the opposite side in interlock area is equipped with the double-layered way, and the outside in interlock area is equipped with a plurality of logical grooves that communicate with the double-layered way, and is a plurality of it is the one-to-one setting to support tight subassembly and a.
Further, every group support tight subassembly and include shadoof, pressure disk and reset spring, the one end of shadoof passes to correspond to lead to the inslot and extends to the double-layered inside of saying, the pressure disk set up in the double-layered way and with shadoof fixed connection, reset spring's one end welds in double-layered way inner wall top to reset spring's the other end welds on the pressure disk, reset spring overlaps to be located on extending to the shadoof in the double-layered way.
Further, drive assembly includes first frame, step motor, pivot and guard box, first frame passes through bolt fastening and sets up on the base and be located the second and support group's side, step motor is the fixed setting of horizontality on first frame to the one end fixed connection of shaft coupling and pivot is passed through to the output shaft of first motor, the other end of pivot and the equal fixed connection of the gyro wheel that corresponds of two sets of second supporting seats bottom, the guard box is fixed to be set up in the support top and is located between two sets of second supporting seats, the pivot is passed the guard box and is rotated with the guard box and be connected, step motor is electric connection with the controller.
Further, the bilateral symmetry of a year post is equipped with the post hole to a fixed ring channel that is equipped with in the outside bottom of post, rotating device includes second frame, servo motor, bull stick, chassis, first terminal surface ring rack, second terminal surface ring rack, revolving cylinder post and two sets of interlock subassemblies, the second frame passes through bolt fastening and sets up in ejection of compact roof top, servo motor is handstand form and fixes and set up on the second frame to servo motor's output shaft passes through shaft coupling and bull stick one end fixed connection, the other end of bull stick passes a year post inside and is connected with the base rotation, servo motor is electric connection with the controller.
Further, the chassis sets up in the inside centre of a year post to chassis and bull stick fixed connection, first terminal surface ring rack is fixed to be set up in chassis outer fringe top, rotatory section of thick bamboo post cover is located a year post outside to the bottom and the ring of rotatory section of thick bamboo post are sliding connection, second terminal surface ring rack is fixed to be set up in the outer fringe top of rotatory section of thick bamboo post, first terminal surface ring rack and second terminal surface ring rack are located same horizontal plane, one side of a year post is equipped with 90 degrees bending roll carriage, 90 degrees bending roll carriage one side is fixed and is equipped with three-phase asynchronous motor, three-phase asynchronous motor's output shaft passes through shaft coupling and the inside gyro wheel fixed connection of 90 degrees bending roll carriage, three-phase asynchronous motor is electric connection with the controller.
Further, it is two sets of the same and symmetry of interlock subassembly structure size sets up in the both sides of a year post, every group the interlock subassembly includes bevel gear, interlock axle and straight-teeth gear, bevel gear sets up inside a year post to bevel gear and first terminal surface ring rack meshing are connected, the one end and the bevel gear fixed connection of interlock axle to the other end of interlock axle passes corresponding shaft hole and straight-teeth gear fixed connection, the straight-teeth gear is the meshing with second terminal surface ring rack and is connected.
Furthermore, the even array in rotatory section of thick bamboo capital portion is equipped with four groups of slide openings, four groups of slide openings are the one-to-one setting with four internal support devices, and every group internal support device includes extension board, last extension board, fixed plate, first push rod, second push rod and internal support subassembly down, the extension board is fixed to be set up in rotatory section of thick bamboo outside one side, first push rod is just standing the form and is fixed to be set up on the extension board down, go up extension board bottom one end and lie in corresponding the slide opening, and go up the extension board and pass through slide opening and rotatory section of thick bamboo post sliding connection, the output shaft and the upper bracket bottom end fixed connection of first push rod, the fixed plate is fixed to be set up in the top of extension board, the second push rod is standing upside down and is fixed to be set up on the extension board, first push rod and second push rod.
Further, the inner support component is arranged at the bottom of the upper support plate and comprises an outer rod, an inner rod, two groups of sliding rods and two groups of inner support outer arms, the top end of the outer rod is fixedly arranged at the bottom of the upper support plate, the two groups of outer support arms are symmetrically hinged to the two sides of the outer rod, the two groups of outer support arms are provided with sliding grooves on the opposite sides, the output shaft of the second push rod penetrates through the outer rod and the inner rod to be fixedly connected, the inner rod is arranged between the two groups of inner support outer arms, the two groups of sliding rods are symmetrically hinged to the two sides of the inner rod, and the other ends of the two groups of sliding rods are respectively.
The invention has the beneficial effects that: firstly, placing a batch of cement packaging bags into a protective box through one side, manually pulling a lifting rod, lifting the pressure plate at the bottom by the lifting rod in a matching manner corresponding to a reset spring, turning over two ports corresponding to the cement bags to be placed in clamping channels at two sides, releasing the lifting rod to enable the pressure plate to tightly support the cement bags, operating a controller to start a stepping motor after the batch of cement bags are tightly supported, driving a rotating shaft to rotate by an output shaft of the stepping motor through a coupler, driving two rollers at the bottoms of two transmission devices to rotate by the rotating shaft, driving corresponding transmission belts to rotate synchronously by the two rollers, driving a linkage belt to rotate by an upright post, driving the linkage belt at two sides to drive the batch of cement bags to move forwards in a standing manner, when the cement bags move to a proximity sensor, transmitting a signal to the controller by the proximity sensor, turning off the stepping motor and starting a first push rod and a second push rod by the controller, driving an upper supporting plate to move, the upper support plate drives the inner support assembly to extend into the open cement bag, at the moment, the second push rod output shaft drives the inner rod to move downwards, the inner rod drives the sliding rods at two sides and hinged with the inner rod to slide in the sliding grooves of the corresponding pair of inner support outer arms, so as to support the pair of inner support outer arms, the pair of inner support outer arms longitudinally support the cement bag, the cement bag is automatically separated from the pressing disc to be tightly pressed, at the moment, the servo motor switch is opened by the control controller, the output shaft of the servo motor drives the rotating rod to rotate, the rotating rod drives the chassis to rotate, the chassis drives the first end face ring rack thereon to rotate, so that the first end face ring rack drives the bevel gears at two sides to rotate, the bevel gears at two sides drive the second end face ring rack to rotate through the linkage shaft, the second end face ring rack drives the rotating cylinder to rotate, the rotating cylinder drives the four groups of inner support devices to intermittently rotate, the automatic bag replacing device has the advantages that the batch of cement bags are turned outwards and tightly abutted into the clamping channel, the controller is operated, the dry-mixed mortar packaging bags can be automatically replaced, the operation is convenient, the safety and the efficiency are high, and the bag replacing efficiency during dry-mixed mortar packaging is greatly improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings in the embodiments of the present invention are briefly described below.
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is a perspective view of the conveying mechanism of the present invention;
FIG. 4 is a schematic perspective view of the driving assembly according to the present invention;
FIG. 5 is a schematic, disassembled view of the transmission of the present invention;
FIG. 6 is a partially disassembled schematic view of the rotating mechanism of the present invention;
FIG. 7 is a schematic view of a proximity sensor mounting perspective of the present invention;
FIG. 8 is a partially disassembled schematic view of the rotating cylinder and inner support device of the present invention;
FIG. 9 is a perspective view of the inner support assembly of the present invention;
FIG. 10 is a perspective view of a 90 degree roller carriage of the present invention;
FIG. 11 is an enlarged schematic view at A of FIG. 5;
FIG. 12 is an enlarged schematic view at B of FIG. 5;
FIG. 13 is an enlarged schematic view at C of FIG. 6;
in the figure: the device comprises a base 1, a material placing seat 10, a 90-degree bending
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some components of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product.
Referring to fig. 1 to 13, an automatic bag replacing machine for dry-mixed mortar bag loading comprises a base 1 and a carrying frame 2, and further comprises a controller 3, a discharging top plate 4, a carrying column 5, a conveying mechanism 6 and a rotating mechanism 7, wherein the carrying frame 2 is arranged on the base 1 to support the discharging top plate 4, the carrying frame 2 is fixedly connected with the base 1, the controller 3 is arranged on one side of the top of the base 1, the discharging top plate 4 is arranged on the top of the carrying frame 2 and is fixedly connected with the carrying frame 2, the carrying column 5 is arranged on the base 1 and is fixedly connected with the base 1, the carrying column 5 is positioned under the discharging top plate 4, the conveying mechanism 6 is arranged on the base 1 beside the carrying column 5 to vertically convey mortar bags, the conveying mechanism 6 comprises a
The two sets of the
Each roller 624 is provided with a first raceway 6240 and a second raceway 6241, the transmission belt is rotatably sleeved in the first raceway 6240 of the three sets of rollers 624, one side of the conveying belt 620 close to the second raceway 6241 is uniformly provided with a plurality of upright posts 6200, one ends of the plurality of upright posts 6200 are fixedly connected with the conveying belt 620, the
Each group of the abutting assemblies 625 comprises a
The
The two sides of the supporting column 5 are symmetrically provided with column holes 50, the bottom outside the supporting column 5 is fixedly provided with a loop 51, the rotating device 70 comprises a second base 700, a servo motor 701, a
The
The two groups of linkage assemblies 707 have the same structure and size and are symmetrically arranged at two sides of the supporting column 5, each group of linkage assemblies 707 comprises a
Four groups of sliding
The
The working principle is as follows: putting the batch of cement packaging bags into the protective box 613 from one side, manually pulling the
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