CN220484832U

CN220484832U - Replacement assembly of embossing rewinder

Info

Publication number: CN220484832U
Application number: CN202322144857.8U
Authority: CN
Inventors: 周宁
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-08-10
Filing date: 2023-08-10
Publication date: 2024-02-13
Anticipated expiration: 2033-08-10

Abstract

The utility model discloses a replacement component of an embossing rewinder, which comprises a positioning plate, wherein a first electric push rod is arranged on the positioning plate, an embossing rewinder main body is fixedly arranged on the first electric push rod, two groups of first positioning blocks are fixedly arranged at one end of the embossing rewinder main body, a placing groove is formed in the first positioning block, a winding component is detachably arranged in the placing groove, a positioning component is fixedly arranged at one end of the embossing rewinder main body, the positioning component is matched with the placing groove and the winding component for use, four groups of first electric push rods are arranged, and the four groups of first electric push rods are fixedly arranged at four corners of the upper surface of the positioning plate. The utility model has the advantages that the equipment mechanisms can be mutually matched when the equipment is used, so that the winding wheel of the embossing rewinder can be replaced when the equipment is used, the corresponding height adjustment can be carried out according to the use requirement when the equipment is used, and the equipment is convenient to use.

Description

Replacement assembly of embossing rewinder

Technical Field

The utility model belongs to the technical field of toilet paper production, and particularly relates to a replacement component of an embossing rewinder.

Background

The toilet paper is mainly used for daily health of people, is one of indispensable paper types for people, and is characterized by strong water absorption, no pathogenic bacteria (pathogenic bacteria such as escherichia coli are not allowed), softness and thickness uniformity of paper, no holes, uniform wrinkling, uniform color and no impurity, and the publication number: CN213265007U, a stock form knurling rewinding machine, which comprises a box body, one side inner wall of box bottom has the base through the screw connection, and the both sides outer wall on base top all is provided with first arc wall, and the equal swing joint of inner wall in first arc wall has the squeeze roll, the top outer wall of base is provided with the second arc wall, and one side inner wall swing joint of box has two equidistance distributed glue spreader, and the glue spreader all is located directly over the second arc wall, one side outer wall on box top has the motor through rivet connection. The utility model is always stirred under the action of the motor and the stirring blade to keep the form and avoid solidification and blockage, the roll paper is extruded by the extrusion roller and the arc-shaped groove on the base before and after the glue coating, the possible existence of wrinkles before the glue coating is avoided, the glue coating is uneven, the uneven glue coating also exists after the glue coating, the phenomenon of uneven roll paper damage of the embossing is caused, and the working efficiency of the embossing rewinder is improved.

However, the prior art has some problems: when the common embossing rewinder is used or is used, the winding wheel of the embossing rewinder is inconvenient to replace after the toilet paper is wound, equipment is inconvenient to use, and the equipment is inconvenient to adjust the corresponding height according to the use requirement when in use, so that a replacement component of the embossing rewinder is provided.

Disclosure of Invention

Aiming at the problems existing in the prior art, the utility model provides a replacement component of an embossing rewinder, which is provided with equipment, wherein equipment mechanisms can be mutually matched when the equipment is used, so that a winding wheel of the embossing rewinder can be replaced when the equipment is used, the corresponding height adjustment can be carried out according to the use requirement when the equipment is used, and the equipment is convenient to use.

The utility model discloses a replacement component of an embossing rewinder, which comprises a positioning plate, wherein a first electric push rod is arranged on the positioning plate, an embossing rewinder main body is fixedly arranged on the first electric push rod, two groups of first positioning blocks are fixedly arranged at one end of the embossing rewinder main body, a placing groove is formed in the first positioning block, a winding component is detachably arranged in the placing groove, a positioning component is fixedly arranged at one end of the embossing rewinder main body, and the positioning component is matched with the placing groove and the winding component for use.

As preferable in the utility model, the four groups of the first electric push rods are fixedly arranged at four corners of the upper surface of the positioning plate, and the other ends of the four groups of the first electric push rods are fixedly connected at four corners of the lower surface of the embossing rewinder main body.

As the preferable mode of the utility model, the winding component comprises a first connecting column, a second connecting column and two groups of fixing blocks, wherein a speed reducing motor is fixedly arranged on the first connecting column, a bearing seat is fixedly arranged on the second connecting column, a winding column is fixedly arranged on an output shaft of the speed reducing motor, the other end of the winding column is fixedly arranged on the bearing seat, a toilet paper roll is arranged on the winding column, and first square through holes are respectively formed in the first connecting column and the second connecting column.

As the preferable mode of the utility model, the two groups of fixing blocks are respectively and fixedly arranged at two sides of one end of the embossing rewinder main body, a second electric push rod is fixedly arranged on the fixing blocks, a pushing block is fixedly arranged at the other end of the second electric push rod, a groove is formed in the pushing block, and the first connecting column and the second connecting column can be arranged in the groove.

As preferable in the utility model, one end of each of the first connecting column and the second connecting column is fixedly provided with a moving block, and the moving block is provided with a circular through hole.

As preferable, the positioning assembly comprises a first fixing plate, wherein the first fixing plate is fixedly arranged at one end of the embossing rewinder main body, two groups of third connecting columns are fixedly arranged on the first fixing plate, the other ends of the third connecting columns are fixedly arranged on the first positioning block, a placing block is fixedly arranged on the first fixing plate, a double-shaft motor is fixedly arranged on the placing block, second fixing plates are fixedly arranged at two sides of the double-shaft motor, a rotating column is fixedly arranged on an output shaft of the double-shaft motor, and the rotating column rotates through the second fixing plate.

As the preferable one of the utility model, the other end of the rotating column is fixedly provided with a first connecting block, the first connecting block is fixedly provided with a second connecting block, the third connecting column is fixedly provided with a second positioning block, a fixed column is adjustably arranged between the second positioning blocks, one end of the fixed column can pass through the second square through hole and the first square through hole, the lower ends of the fixed columns are fixedly provided with connecting plates, the connecting plates are provided with adjusting grooves, the other ends of the second connecting blocks are movably connected with adjusting blocks, and the adjusting blocks are movably arranged in the adjusting grooves.

Compared with the prior art, the utility model has the following beneficial effects:

1. according to the utility model, through the design of the positioning plate, the first electric push rod, the embossing rewinder main body, the first positioning block, the placing groove, the winding component and the positioning component, the embossing rewinder main body can be correspondingly adjusted in height according to the use requirement when the equipment is used, the winding component can be placed in the placing groove through the cooperation of the first positioning block and the placing groove, the positioning component can be started to automatically fix the winding component when the embossing rewinder main body is placed in the placing groove, and the positioning component can be started again when the winding component needs to be replaced so that the winding component can be quickly disassembled, so that the equipment mechanism can be mutually matched when the equipment is used, the winding wheel of the embossing rewinder can be replaced when the equipment is used, the corresponding height adjustment can be performed according to the use requirement when the equipment is used, and the use effect of the equipment is convenient is achieved.

2. According to the utility model, through the design of the positioning plate, the first electric push rod and the embossing rewinder main body, the first electric push rod can be started to enable the embossing rewinder main body to be capable of adjusting the height, so that the embossing rewinder main body can be correspondingly adjusted in height according to use requirements, and the equipment is convenient to use.

3. According to the utility model, through the design of the winding component, the first connecting column, the second connecting column, the speed reducing motor, the bearing seat, the winding column, the toilet paper roll and the first square through hole, the output shaft of the speed reducing motor synchronously drives the winding column to rotate on the bearing seat when the speed reducing motor is started when the winding component is started, and the winding column synchronously drives the toilet paper roll to wind when the winding column rotates, so that the effect of automatically winding the toilet paper roll is achieved.

4. According to the utility model, through the design of the embossing rewinder main body, the fixed block, the second electric push rod, the pushing block, the groove and the like, the second electric push rod can be started when the winding assembly is disassembled, and the second electric push rod synchronously drives the pushing block to adjust the height when the second electric push rod is started, so that the effect of pushing the winding assembly placed in the placing groove upwards is achieved, and the winding assembly is convenient to replace.

5. According to the utility model, through the design of the first connecting column, the second connecting column, the moving block and the circular through hole, the effect of facilitating the movement of the rolling assembly is achieved through the design of the circular through hole when the rolling assembly is pushed upwards to a proper position.

6. According to the utility model, through the design of the embossing rewinder main body, the positioning assembly, the first fixing plate, the third connecting column, the placement block, the second fixing plate, the double-shaft motor and the rotating column, the double-shaft motor can be started when the embossing rewinder main body is replaced, and the output shaft of the double-shaft motor synchronously drives the rotating column to rotate on the second fixing plate when the double-shaft motor is started, so that the effect that the rotating column can rotate on the second fixing plate is achieved, and the rotating column also has stability when rotating on the second fixing plate, thereby being convenient for equipment use.

7. According to the utility model, through the design of the third connecting column, the second positioning block, the rotating column, the fixing column, the connecting plate, the adjusting groove, the first connecting block, the second connecting block and the adjusting block, the first connecting block synchronously rotates when the rotating column rotates, the second connecting block synchronously rotates when the first connecting block rotates, and the adjusting block synchronously adjusts the position in the adjusting groove when the second connecting block rotates, so that the fixing column can automatically adjust the left and right positions on the second positioning block, the fixing column can adjust the positions on the second square through hole and the first square through hole according to the use requirement, the effects of fixing the winding component and disassembling the winding component are achieved, and the effect of facilitating the replacement of the winding component is achieved.

Drawings

FIG. 1 is a schematic top perspective view of the overall structure of an apparatus according to an embodiment of the present utility model;

FIG. 2 is a schematic side perspective view of the whole structure of the device according to the embodiment of the utility model;

FIG. 3 is a schematic perspective view of the overall structure of the winding assembly of the device according to the embodiment of the utility model;

FIG. 4 is a schematic perspective view of a part of the structure of a positioning assembly of the device according to the embodiment of the present utility model;

fig. 5 is a schematic perspective view of a part of a device positioning assembly according to an embodiment of the present utility model.

In the figure: 1. a positioning plate; 2. a first electrical push rod; 3. an embossing rewinder body; 4. a first positioning block; 5. a placement groove; 6. a winding assembly; 601. a first connection post; 602. a second connection post; 603. a speed reducing motor; 604. a bearing seat; 605. winding a column; 606. a toilet paper roll; 607. a moving block; 608. a circular through hole; 609. a fixed block; 610. a second electric push rod; 611. a pushing block; 612. a groove; 613. a first square through hole; 7. a positioning assembly; 701. a first fixing plate; 702. a third connecting column; 703. a second positioning block; 704. placing a block; 705. a second fixing plate; 706. a biaxial motor; 707. rotating the column; 708. fixing the column; 709. a connecting plate; 710. an adjustment tank; 711. a first connection block; 712. a second connection block; 713. an adjusting block; 8. and a second square through hole.

Detailed Description

For a further understanding of the utility model, its features and advantages, reference is now made to the following examples, which are illustrated in the accompanying drawings.

The structure of the present utility model will be described in detail with reference to the accompanying drawings.

As shown in fig. 1 to 5, the replacement assembly of an embossing and rewinding machine provided by the embodiment of the utility model comprises a positioning plate 1, wherein a first electric push rod 2 is arranged on the positioning plate 1, an embossing and rewinding machine main body 3 is fixedly arranged on the first electric push rod 2, two groups of first positioning blocks 4 are fixedly arranged at one end of the embossing and rewinding machine main body 3, a placing groove 5 is formed in the first positioning blocks 4, a winding assembly 6 is detachably arranged in the placing groove 5, a positioning assembly 7 is fixedly arranged at one end of the embossing and rewinding machine main body 3, and the positioning assembly 7 is matched with the placing groove 5 and the winding assembly 6 for use.

The scheme is adopted: through the locating plate 1, first electric push rod 2, knurling rewinding machine main part 3, first locating block 4, standing groove 5, winding subassembly 6 and locating component 7's design, make equipment accessible according to the use needs carry out corresponding altitude mixture control to knurling rewinding machine main part 3 when using, winding subassembly 6 accessible is placed in the standing groove 5 with the cooperation of first locating block 4 and standing groove 5, can start locating component 7 when knurling rewinding machine main part 3 is placed in the standing groove 5 and fix winding subassembly 6 voluntarily, can start locating component 7 again when winding subassembly 6 needs to change and make winding subassembly 6 dismantle fast, equipment mechanism can carry out the mutually supporting when having reached equipment and make knurling rewinding machine winding wheel can change when finishing using, equipment can carry out corresponding altitude mixture control according to the use needs when using, the effect of equipment of being convenient for use.

Referring to fig. 2, the first electric push rods 2 are provided with four groups, the four groups of first electric push rods 2 are fixedly installed at four corners of the upper surface of the positioning plate 1, and the other ends of the four groups of first electric push rods 2 are fixedly connected at four corners of the lower surface of the embossing rewinder main body 3.

The scheme is adopted: through the design of locating plate 1, first electric putter 2 and knurling rewinding machine main part 3 for can start first electric putter 2 and make knurling rewinding machine main part 3 can carry out altitude mixture control, reached knurling rewinding machine main part 3 and can carry out corresponding altitude mixture control's effect according to the use needs, the equipment of being convenient for uses.

Referring to fig. 3, the winding assembly 6 includes a first connecting column 601, a second connecting column 602 and two groups of fixing blocks 609, a gear motor 603 is fixedly installed on the first connecting column 601, a bearing seat 604 is fixedly installed on the second connecting column 602, a winding column 605 is fixedly installed on an output shaft of the gear motor 603, the other end of the winding column 605 is fixedly installed on the bearing seat 604, a toilet paper roll 606 is arranged on the winding column 605, and first square through holes 613 are formed in the first connecting column 601 and the second connecting column 602.

The scheme is adopted: through the design of rolling subassembly 6, first spliced pole 601, second spliced pole 602, gear motor 603, bearing frame 604, rolling post 605, toilet paper roll 606 and first square through-hole 613 for gear motor 603 output shaft synchronization drive rolling post 605 rotates on bearing frame 604 when gear motor 603 starts when rolling subassembly 6 starts, and rolling post 605 drives toilet paper roll 606 in step and rolls when rolling post 605 rotates, has reached automatic rolling toilet paper roll 606's effect.

Referring to fig. 3, two sets of fixing blocks 609 are respectively and fixedly installed at two sides of one end of the embossing rewinder main body 3, a second electric push rod 610 is fixedly installed on the fixing blocks 609, a pushing block 611 is fixedly installed at the other end of the second electric push rod 610, a groove 612 is formed in the pushing block 611, and the first connecting column 601 and the second connecting column 602 can be arranged in the groove 612.

The scheme is adopted: through the design of embossing rewinding machine main part 3, fixed block 609, second electricity push rod 610, pushing block 611 and recess 612 for rolling subassembly 6 can start second electricity push rod 610 when dismantling, and second electricity push rod 610 drives pushing block 611 in step and carries out the altitude mixture control when starting, thereby has reached the effect of upwards pushing rolling subassembly 6 of placing in standing groove 5, is convenient for the change of rolling subassembly 6.

Referring to fig. 3, a moving block 607 is fixedly installed at one end of each of the first connection post 601 and the second connection post 602, and a circular through hole 608 is formed in the moving block 607.

The scheme is adopted: through the design of first spliced pole 601, second spliced pole 602, movable block 607 and circular through-hole 608 for the design of accessible circular through-hole 608 when the rolling subassembly 6 upwards promotes to suitable position reaches the effect that the rolling subassembly 6 of being convenient for removes.

Referring to fig. 4, the positioning assembly 7 includes a first fixing plate 701, the first fixing plate 701 is fixedly installed at one end of the embossing rewinder body 3, two groups of third connecting columns 702 are fixedly installed on the first fixing plate 701, the other end of each third connecting column 702 is fixedly installed on the first positioning block 4, a placement block 704 is fixedly installed on the first fixing plate 701, a dual-shaft motor 706 is fixedly installed on the placement block 704, two sides of the dual-shaft motor 706 are fixedly installed with second fixing plates 705, a rotating column 707 is fixedly installed on an output shaft of the dual-shaft motor 706, and the rotating column 707 rotates through the second fixing plates 705.

The scheme is adopted: through the design of the embossing rewinder main body 3, the locating component 7, the first fixing plate 701, the third connecting column 702, the placing block 704, the second fixing plate 705, the double-shaft motor 706 and the rotating column 707, the double-shaft motor 706 can be started when the embossing rewinder main body 3 is replaced, the output shaft of the double-shaft motor 706 synchronously drives the rotating column 707 to rotate on the second fixing plate 705 when the double-shaft motor 706 is started, the effect that the rotating column 707 can rotate on the second fixing plate 705 is achieved, the rotating column 707 also has stability when rotating on the second fixing plate 705, and the equipment is convenient to use.

Referring to fig. 3, 4 and 5, a first connecting block 711 is fixedly mounted at the other end of the rotating column 707, a second connecting block 712 is fixedly mounted on the first connecting block 711, a second positioning block 703 is fixedly mounted on the third connecting column 702, a fixing column 708 is adjustably mounted between the second positioning blocks 703, one end of the fixing column 708 can pass through the second square through hole 8 and the first square through hole 613, a connecting plate 709 is fixedly mounted at the lower end of the fixing column 708, an adjusting groove 710 is formed in the connecting plate 709, an adjusting block 713 is movably connected to the other end of the second connecting block 712, and the adjusting block 713 is movably arranged in the adjusting groove 710.

The scheme is adopted: through the design of third spliced pole 702, second locating piece 703, rotate post 707, fixed column 708, connecting plate 709, adjustment tank 710, first connecting block 711, second connecting block 712 and adjustment block 713, first connecting block 711 also rotates in step when making rotate post 707 rotate, second connecting block 712 also rotates when first connecting block 711 rotates, adjustment block 713 also rotates in step when second connecting block 712 rotates in adjustment tank 710, thereby the fixed column 708 can be automatically left and right position adjustment on second locating piece 703, thereby the fixed column 708 can be according to the use needs on second square through hole 8 and first square through hole 613, the effect that can fix winding subassembly 6 and dismantle winding subassembly 6 is reached, the effect that is convenient for the change of winding subassembly 6 is reached.

The working principle of the utility model is as follows:

when the embossing rewinder is used, first electric push rod 2 is started according to the use requirement, first electric push rod 2 synchronously drives embossing rewinder main body 3 to carry out altitude mixture control when first electric push rod 2 starts, can start winding subassembly 6 when embossing rewinder main body 3 adjusts suitable position, gear motor 603 output shaft synchronously drives winding post 605 and rotates on bearing frame 604 when gear motor 603 starts when winding subassembly 6 starts, winding post 605 synchronously drives toilet paper roll 606 and winds when winding post 605 rotates, winding subassembly 6 can start second electric push rod 610 when dismantling, second electric push rod 610 starts second electric push rod 610 simultaneously drives pushing block 611 and carries out altitude mixture control when starting, the design of accessible circular through hole 608 when winding subassembly 6 upwards promotes suitable position, thereby achieving the winding subassembly 6 of being convenient for and removes, embossing rewinder main body 3 can start biax motor 706 when changing, biax motor 706 starts, biax motor 706 output shaft synchronously drives the rotation post 707 and rotates on second fixed plate 705, first connecting block 711 also rotates synchronously when rotating, second connecting block 711 rotates, thereby also can reach the fixed position of fixing block 708 and can reach the fixed position of second connecting block 708 on the second connecting block 708 when adjusting position and adjusting position of square connecting block 713 and can reach the fixed position of winding subassembly 708 on the second connecting block 713, thereby achieving the position of adjusting and being convenient for fixing position of winding subassembly 8 and adjusting winding subassembly 708 on the position of the square connecting block 708.

To sum up: the replacement component of the embossing and rewinding machine solves the problems that when the common embossing and rewinding machine is used or used, the winding wheel of the embossing and rewinding machine is inconvenient to replace after the toilet paper is wound, equipment is inconvenient to use, and the equipment is inconvenient to adjust according to the requirement of the use, by means of the mutual matching of the positioning plate 1, the first electric push rod 2, the embossing and rewinding machine main body 3, the first positioning block 4, the placing groove 5, the winding component 6, the first connecting column 601, the second connecting column 602, the speed reducing motor 603, the bearing seat 604, the winding column 605, the toilet paper roll 606, the moving block 607, the circular through hole 608, the fixed block 609, the second electric push rod 610, the pushing block 611, the groove 612, the first square through hole 613, the positioning component 7, the first fixing plate 701, the third connecting column 702, the second positioning block 703, the placing block 704, the second fixing plate 705, the double-shaft motor 706, the rotating column 707, the fixing column 708, the connecting plate 709, the adjusting groove 710, the first connecting block 711, the second connecting block 712 and the adjusting block 713 and the second square through hole 8.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a change subassembly of knurling rewinding machine, includes locating plate (1), its characterized in that: be provided with first electricity push rod (2) on locating plate (1), fixed mounting has knurling rewinding machine main part (3) on first electricity push rod (2), knurling rewinding machine main part (3) one end fixed mounting has two sets of first locating pieces (4), standing groove (5) have been seted up on first locating piece (4), demountable installation has rolling subassembly (6) in standing groove (5), knurling rewinding machine main part (3) one end fixed mounting has locating component (7), locating component (7) and standing groove (5) and rolling subassembly (6) cooperation use.

2. A replacement assembly for an embossing rewinder as claimed in claim 1, wherein: the embossing rewinder comprises a positioning plate (1), and is characterized in that four groups of first electric push rods (2) are arranged, the four groups of first electric push rods (2) are fixedly arranged at four corners of the upper surface of the positioning plate (1), and the other ends of the four groups of first electric push rods (2) are fixedly connected to four corners of the lower surface of the embossing rewinder body (3).

3. A replacement assembly for an embossing rewinder as claimed in claim 1, wherein: the winding assembly (6) comprises a first connecting column (601), a second connecting column (602) and two groups of fixing blocks (609), a gear motor (603) is fixedly installed on the first connecting column (601), a bearing seat (604) is fixedly installed on the second connecting column (602), a winding column (605) is fixedly installed on an output shaft of the gear motor (603), the other end of the winding column (605) is fixedly installed on the bearing seat (604), a toilet paper roll (606) is arranged on the winding column (605), and first square through holes (613) are formed in the first connecting column (601) and the second connecting column (602).

4. A replacement assembly for an embossing rewinder as claimed in claim 3, wherein: the two groups of fixed blocks (609) are respectively and fixedly arranged at two sides of one end of the embossing rewinder main body (3), a second electric push rod (610) is fixedly arranged on the fixed blocks (609), a pushing block (611) is fixedly arranged at the other end of the second electric push rod (610), a groove (612) is formed in the pushing block (611), and the first connecting column (601) and the second connecting column (602) can be arranged in the groove (612).

5. A replacement assembly for an embossing rewinder as claimed in claim 3, wherein: the movable block (607) is fixedly arranged at one ends of the first connecting column (601) and the second connecting column (602), and a circular through hole (608) is formed in the movable block (607).

6. A replacement assembly for an embossing rewinder as claimed in claim 1, wherein: the positioning assembly (7) comprises a first fixing plate (701), the first fixing plate (701) is fixedly arranged at one end of the embossing rewinder main body (3), two groups of third connecting columns (702) are fixedly arranged on the first fixing plate (701), the other ends of the third connecting columns (702) are fixedly arranged on the first positioning block (4), a placing block (704) is fixedly arranged on the first fixing plate (701), a double-shaft motor (706) is fixedly arranged on the placing block (704), second fixing plates (705) are fixedly arranged at two sides of the double-shaft motor (706), and a rotating column (707) is fixedly arranged on an output shaft of the double-shaft motor (706) and rotates through the second fixing plate (705).

7. The replacement assembly for an embossing rewinder of claim 6, wherein: the novel rotary column is characterized in that a first connecting block (711) is fixedly arranged at the other end of the rotary column (707), a second connecting block (712) is fixedly arranged on the first connecting block (711), a second positioning block (703) is fixedly arranged on the third connecting column (702), a fixing column (708) is arranged between the second positioning blocks (703) in an adjustable mode, one end of the fixing column (708) can penetrate through a second square through hole (8) and a first square through hole (613), connecting plates (709) are fixedly arranged at the lower ends of the fixing columns (708), adjusting grooves (710) are formed in the connecting plates (709), adjusting blocks (713) are movably arranged at the other ends of the second connecting blocks (712), and the adjusting blocks (713) are movably arranged in the adjusting grooves (710).