CN204713469U - A kind of sling N pack paper wraps up in bag equipment - Google Patents

Abstract

The utility model discloses a folding wrapping paper wrapping device. A workbench mechanism is installed horizontally in the center of the frame of the utility model. A screw motor mechanism for pressing the top surface is installed on one side of the workbench mechanism, and an up and down folding movement mechanism is installed on the other side; the workbench mechanism includes a trough working The center of the rack is fixed with two long guide rails arranged in parallel horizontally. The bottom of the trough-type worktable is sleeved on the long guide rails and moves along the long guide rails. There are limit clips near both ends of the two long guide rails; the workbench The frame at the mechanism rear is equipped with a rear support mechanism, and two rear motor movement mechanisms and two left and right folding movement mechanisms are housed on the rear support mechanism. The utility model drives the crank connecting rod and the synchronous belt through the motor to drive the folding plate to fold the wrapping paper to pack the gift box; it can complete the automatic packaging of the gift box of a certain size, which is convenient to adjust and easy to operate; it is suitable for gift shop packaging of gift boxes and automatic gift boxes. Vending machines and other occasions that require unmanned automatic packaging.

Description

A folding wrapping paper wrapping equipment

technical field

The utility model relates to a wrapping device, in particular to a folding wrapping paper wrapping device.

Background technique

Packaging is an indispensable part of social production and life. With the rapid development of science and technology and economic level, traditional manual packaging can no longer meet people's needs in all aspects, so packaging machinery has emerged as the times require. Using packaging machinery It can greatly improve labor productivity, effectively ensure packaging quality and hygiene requirements, meet the needs of large-scale production, greatly reduce labor intensity, and reduce packaging costs.

In our daily life, packaging can be seen everywhere. For example, many cubic objects such as gifts and books are packaged by folding wrapping, and these packagings are carried out by manpower, which is cumbersome and complicated. At present, there is no cubic object that can achieve A device for automatically folding and wrapping a sheet of wrapping paper.

Utility model content

In order to solve the problems in the background technology, the purpose of this utility model is to provide a folding wrapping paper wrapping equipment, which can be used for automatic packaging of gift boxes.

In order to achieve the above object, the technical scheme that the utility model adopts is:

The utility model comprises a frame, a lead screw motor mechanism, an up and down folding movement mechanism, a rear bracket mechanism, a rear motor movement mechanism and a left and right folding movement mechanism; The screw motor mechanism is pressed on the top surface, and the other side of the workbench mechanism is installed with a vertical folding movement mechanism; the workbench mechanism includes a trough workbench, and two horizontal parallel Arranged long guide rails, the trough workbench is U-shaped, the bottom of the trough workbench is sleeved on the long guide rails through the sliding sleeve and moves along the long guide rails, and there is a movement limiter for the trough workbench near both ends of the two long guide rails. position limit clamp; the rear support mechanism is installed on the frame behind the workbench mechanism, and the rear support mechanism is equipped with two rear motor movement mechanisms for top surface wrapping and two left and right wrapping mechanisms for left and right sides The folding motion mechanism, the rear motor motion mechanism and the left and right folding motion mechanisms are all along the horizontal direction perpendicular to the long guide rail of the workbench mechanism.

The rear bracket mechanism includes a rear motor fixing plate, two rear motor support plates, an upper horizontal guide rail assembly and a lower horizontal guide rail assembly, a rear motor support plate is installed on both sides of the rear motor fixing plate, two rear motor support plates The upper horizontal guide rail assembly and the lower horizontal guide rail assembly arranged in parallel up and down are installed between them. The upper horizontal guide rail assembly and the lower horizontal guide rail assembly have the same structure, and both include two horizontal guide rails installed in parallel up and down. The two horizontal guide rails are perpendicular to the In the horizontal direction of the long guide rail, both ends of the two horizontal guide rails pass through the frame and are fixedly connected to the rear motor support plate; two rear motor movement mechanisms with the same structure are symmetrically installed on both sides of the upper horizontal guide rail assembly, and the lower horizontal guide rail assembly Two left and right folding kinematic mechanisms with the same structure are installed symmetrically on both sides.

The rear motor movement mechanism includes a top motor, a top crank-link mechanism and a rear motor bearing slider, the top motor is fixedly mounted on the rear motor fixing plate, and the rear motor bearing slider is sleeved on the two sides of the upper horizontal guide rail assembly. The root horizontal guide rail moves along the horizontal guide rail, the output shaft of the top motor passes through the rear motor fixing plate and connects with the rear part of the rear motor bearing slider through the top crank linkage mechanism, and the front part of the rear motor bearing slider is fixedly connected with a top Face folding board.

The left and right folding motion mechanism includes left and right motors, left and right crank linkages and left and right motor bearing sliders, the left and right motors are fixedly installed on the rear motor fixing plate, and the left and right motor bearing sliders are sleeved on the two horizontal guide rails of the lower horizontal guide rail assembly Moving along the horizontal guide rail, the output shafts of the left and right motors pass through the rear motor fixing plate and are connected to the rear of the left and right motor bearing sliders through the left and right crank linkage mechanisms. Two left and right folding plates on the left and right sides are respectively located on the front and rear sides of the trough-type workbench.

The described up-and-down folding motion mechanism: includes a fixed block, an upper motor bracket and a lower motor bracket, two vertical guide rails installed in parallel front and back are installed between the upper motor bracket and the lower motor bracket, and the fixed block is fixedly sleeved in the middle of the vertical guide rails to The vertical guide rail is divided into the upper half and the lower half. The upper motor bearing slider and the lower motor bearing slider are respectively set on the upper half and the lower half of the vertical guide rail and move up and down along the vertical guide rail; the upper and lower ends of the fixed block are installed There is a vertical bearing seat, and the vertical bearing seat is equipped with a transmission shaft through the bearing; the upper motor and the lower motor are respectively installed on the upper motor bracket and the lower motor bracket, and the output shafts of the upper motor and the lower motor are respectively connected with the fixed block up and down through the timing belt. The transmission shaft belt at the end is connected; the upper motor bearing slider and the lower motor bearing slider are fixedly linked with their respective synchronous belts through the fixing parts, and the upper motor bearing slider and the lower motor bearing slider are respectively installed with upper folds for wrapping the upper and lower sides. The assembly and the lower folding assembly, the upper folding assembly and the lower folding assembly have the same structure and are installed symmetrically.

The upper motor bracket and the lower motor bracket have the same structure. The upper motor bracket includes an upper motor fixing plate and an upper motor support plate fixedly connected in an L shape. The upper motor fixing plate is horizontally fixed on the frame, and the upper motor is installed on the upper motor. board.

The upper folding assembly includes two identical folding plates, two short rods, a long rod and a connecting rod, the upper motor bearing slider is fixedly connected to one end of the connecting rod, and the other end of the connecting rod is fixedly connected to the middle of the long rod , the two ends of the long rod are respectively connected to two folded boards via short rods, and the two folded boards are respectively located on the front and rear sides of the trough-type workbench.

The lead screw motor mechanism includes a lead screw, a motor and a pressure plate, the motor is fixedly installed on the frame, the output shaft of the motor is vertically upward and is fixedly connected with the lead screw, the lead screw is covered with a slide table, and the slide table goes up and down along the lead screw When moving, the slide table is connected to the pressure plate through the support rod, and the pressure plate is located directly above the trough workbench.

The top crank-link mechanism has the same structure as the left and right crank-link mechanisms, and both include cranks, connecting rods, rotating shafts and gaskets. The cranks and connecting rods are hinged through the rotating shafts, and gaskets are installed at the hinges, and the cranks are connected to the output of the motor. The shaft, the connecting rod are connected with the end of the bearing slider.

The fixed block includes a front cover and a rear cover, and the vertical guide rail is tightened and installed between the front cover and the rear cover.

Compared with the background technology, the beneficial effects of the utility model are:

The equipment of the utility model can automatically complete the folding and wrapping of a cube object with a piece of wrapping paper, replacing the cumbersome manual operation, and the packing method is consistent with the manual, neat and beautiful. The machine has a simple and complete structure, good packaging effect, compact paper size, easy operation, and is suitable for folding and wrapping wrapping paper for cubic objects of a certain size.

Description of drawings

Fig. 1 is an overall perspective view of the utility model.

Fig. 2 is an overall perspective view of the utility model.

Fig. 3 is a schematic diagram of installation of the trough-type workbench and the limit clip of the utility model.

Fig. 4 is a structural schematic diagram of the screw motor mechanism of the utility model.

Fig. 5 is a schematic diagram of the rear bracket mechanism of the present invention.

Fig. 6 is a schematic diagram of the rear motor bracket of the present invention.

Fig. 7 is a schematic diagram of the horizontal guide rail assembly of the present invention.

Fig. 8 is a schematic diagram of the rear motor movement mechanism of the present invention.

Fig. 9 is a schematic diagram of the left and right folding mechanism of the present invention.

Fig. 10 is a schematic diagram of the up and down folding movement mechanism of the present invention.

Fig. 11 is a schematic diagram of the upper motor bracket of the present invention.

Fig. 12 is a schematic diagram of the installation of the motor bracket of the utility model.

Fig. 13 is a schematic diagram of installation of the fixing block of the present invention.

Fig. 14 is a schematic diagram of installation of the upper folding assembly of the present invention.

Fig. 15 is a schematic diagram of the upper or lower folding assembly of the present invention.

Fig. 16 is a schematic diagram of the crank linkage mechanism of the present invention.

Fig. 17 is a schematic diagram of the working process of the utility model.

In the figure: 1. Rack, 2. Groove workbench, 3. Long guide rail, 4. Vertical guide rail, 5. Horizontal guide rail, 6. Bearing slider, 7. Limit clip, 8. Top folding plate, 9 , left and right folding plates, 10, upper folding assembly, 11, lower folding assembly, 12, top crank linkage mechanism, 13, left and right crank linkage mechanism, 14, screw motor mechanism, 15, upper motor support, 16, pressure plate , 17, lower motor support, 18, rear motor support, 19, synchronous belt, 20, vertical bearing seat, 21, fixed block, 22, rear motor fixed plate, 23, rear motor support plate, 24, upper motor fixed plate , 25, upper motor support plate, 26, crank, 27, connecting rod, 28, rotating shaft, 29, spacer, 30, front cover, 31, rear cover, 32, fixing piece, 33, folding plate, 34, short rod , 35, long rod, 36, connecting rod, 37, top motor, 38, left and right motors, 39, upper motor, 40, lower motor, 41, transmission shaft.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

As shown in Fig. 1 and Fig. 2, the utility model comprises frame 1, lead screw motor mechanism 14, folding motion mechanism up and down, rear bracket mechanism, rear motor motion mechanism and left and right folding motion mechanism; Table mechanism, one side of the workbench mechanism is equipped with a screw motor mechanism 14 for top surface compression, and the other side of the workbench mechanism is equipped with an up and down folding motion mechanism along the vertical direction; as shown in Figure 3, The workbench mechanism includes a trough-type workbench 2. Two horizontally parallel long guide rails 3 are fixedly installed in the center of the frame 1. The trough-type workbench 2 is U-shaped, and the bottom of the trough-type workbench 2 is sleeved on the long guide rail 3 through a sliding sleeve. Go up and move along the long guide rails 3, near the two ends of the two long guide rails 3 are provided with limit clips 7 for the movement limit of the trough workbench 2; a rear support mechanism is installed on the frame 1 behind the workbench mechanism, Two rear motor movement mechanisms for wrapping on the top surface and two left and right folding movement mechanisms for wrapping on the left and right sides are installed on the rear support mechanism. The rear motor movement mechanism and the left and right folding movement mechanisms are all along the The horizontal direction of the long guide rail 3.

As shown in Figure 5 and Figure 6, the rear bracket mechanism includes a rear motor fixing plate 22, two rear motor support plates 23, an upper horizontal guide rail assembly and a lower horizontal guide rail assembly, and a rear motor is respectively installed on both sides of the rear motor fixing plate 22. The support plate 23, the upper horizontal guide rail assembly and the lower horizontal guide rail assembly arranged in parallel up and down are installed between the two rear motor support plates 23, as shown in Figure 7, the upper horizontal guide rail assembly and the lower horizontal guide rail assembly have the same structure, including two Two horizontal guide rails 5 installed in parallel up and down, two horizontal guide rails 5 are along the horizontal direction perpendicular to the long guide rail 3, and the two ends of the two horizontal guide rails 5 pass through the frame 1 and are fixedly connected to the rear motor support plate 23; The two sides of the horizontal guide rail assembly are symmetrically installed with two rear motor motion mechanisms with the same structure, and the two sides of the lower horizontal guide rail assembly are symmetrically installed with two left and right folding motion mechanisms with the same structure.

As shown in Figure 8, the rear motor movement mechanism comprises top surface motor 37, top surface crank linkage mechanism 12 and rear motor bearing slider 6, and top surface motor 37 is fixedly installed on the rear motor fixed plate 22, and rear motor bearing slider 6 are set on the two horizontal guide rails 5 of the upper horizontal guide rail assembly and move along the horizontal guide rails 5. The output shaft of the top surface motor 37 passes through the rear motor fixing plate 22, passes through the top surface crank linkage mechanism 12 and the rear of the rear motor bearing slide block 6. The front part of the rear motor bearing slider 6 is fixedly connected with a top folding plate 8.

As shown in Figure 9, the left and right folding motion mechanism includes left and right motors 38, left and right crank linkages 13, and left and right motor bearing sliders. The two horizontal guide rails 5 of the assembly move along the horizontal guide rail 5, and the output shafts of the left and right motors 38 pass through the rear motor fixing plate 22 and are connected with the rear parts of the left and right motor bearing sliders through the left and right crank linkage mechanisms 13, and the left and right motor bearing sliders The front part is fixedly connected with two left and right folding plates 9 for wrapping left and right sides through a support rod, and the two left and right folding plates 9 are respectively located at the front and rear sides of the trough-type workbench 2 .

As shown in Figure 10, the up and down folding motion mechanism: comprise fixed block 21, upper motor support 15 and lower motor support 17, between the upper motor support 15 and lower motor support 17, two vertical guide rails 4 that are installed in parallel before and after are installed, as As shown in Figure 13, the fixed block 21 is fixedly sleeved in the middle of the vertical guide rail 4 to divide the vertical guide rail 4 into an upper half section and a lower half section, and the upper motor bearing slider and the lower motor bearing slider are respectively sleeved on the upper half of the vertical guide rail 4 Section and the lower half move up and down along the vertical guide rail 4; the upper and lower ends of the fixed block 21 are equipped with a vertical bearing seat 20, and the vertical bearing seat 20 is equipped with a drive shaft 41 through the bearing; the upper motor support 15 and the lower motor support 17 Upper motor 39 and lower motor 40 are installed respectively, and the output shafts of upper motor 39 and lower motor 40 are respectively connected with drive shaft 41 belts at the upper and lower ends of fixed block 21 by synchronous belt 19; The fixed parts 32 are fixedly linked with the respective synchronous belts 19, as shown in Figure 14, the upper motor bearing slider and the lower motor bearing slider are respectively equipped with an upper folding assembly 10 and a lower folding assembly 11 for wrapping the upper and lower sides, and the upper The folding assembly 10 and the lower folding assembly 11 have the same structure and are installed symmetrically.

As shown in Figure 11, the upper motor support 15 and the lower motor support 17 have the same structure, and the upper motor support 15 includes an upper motor fixing plate 24 and an upper motor support plate 25 that are fixedly connected in an L shape, and the upper motor fixing plate 24 is horizontally fixed on the machine. Frame 1, upper motor 39 is installed on the upper motor fixed plate 24 as shown in Figure 12.

As shown in Figures 15 and 14, the upper folding assembly 10 includes two identical folding plates 33, two short rods 34, a long rod 35 and a connecting rod 36, and the upper motor bearing slider is fixedly connected to one end of the connecting rod 36, The other end of connecting rod 36 is fixedly connected with the middle part of long rod 35, and the two ends of long rod 35 are respectively connected two folding boards 33 through short rod 34, and two folding boards 33 are positioned at the front and back sides of trough type workbench 2 respectively.

As shown in Figure 4, the lead screw motor mechanism 14 includes a lead screw, a motor and a pressing plate 16, the motor is fixedly mounted on the frame 1, the output shaft of the motor is vertically upward and fixedly connected with the lead screw, the lead screw is covered with a slide table, The slide table moves up and down along the leading screw, and the slide table is connected to the pressing plate 16 through the support rod, and the pressing plate 16 is located directly above the trough workbench 2 .

As shown in Figure 16, the top crank linkage mechanism 12 has the same structure as the left and right crank linkage mechanisms 13, and both include a crank 26, a connecting rod 27, a rotating shaft 28 and a gasket 29, and the crank 26 and connecting rod 27 are hinged through the rotating shaft 28. Pad 29 is equipped with at the joint, and crank 26 connects the output shaft of motor, and connecting rod 27 is connected with bearing slide block end.

As shown in FIG. 13 , the fixing block 21 includes a front cover 30 and a rear cover 31 , and the vertical guide rail is tightened between the front cover 30 and the rear cover 31 .

The above-mentioned rear motor bearing slider, upper motor bearing slider, lower motor bearing slider, and left and right motor bearing sliders have the same structure, and all include a slider sleeve and two linear bearings with the same structure, and two linear bearing sleeves with the same structure In the two parallel holes of the slider sleeve, it is set on the guide rail.

Both the horizontal guide rail and the vertical guide rail include two optical axes and end caps at both ends. The long guide rail includes a group of optical axes and end caps at both ends of each optical axis.

The working principle of the utility model is as follows:

As shown in Figure 17, manually put the cube to be packed into the trough workbench 2 together with the wrapping paper, and make the cube to be packed roughly in the center of the wrapping paper (state A-state B in the figure), then place the trough The workbench 2 is sent into the automatic packaging part of the machine together with the cube to be packed and the wrapping paper. To start the machine, firstly, the two top folding plates 8 are sequentially driven by the corresponding top crank linkage mechanism 12 and the bearing slider 6 to make a linear reciprocating movement along the horizontal guide rail 5, and press the wrapping paper on both sides to the top of the cube respectively. When the top folding plate 8 moves to the maximum stroke position, it stays for a short time to strengthen the folding effect of the paper (state C-state F in the figure).

After the top folding plate 8 is reset, the screw motor mechanism 14 works, driving the pressing plate 16 to press down, pressing the packaged upper surface (state G-state H in the figure), and the lower folding assembly 11 is on the timing belt 19 Carry out a linear back-and-forth movement along the vertical guide rail 4 under the drive, fold the wrapping paper on the front and rear bottom surfaces to the front and rear sides of the cube, and stay for a short period of time when the lower folding assembly 11 moves to the maximum stroke position to strengthen the folding effect of the paper. After the lower folding assembly 11 is reset, the upper folding assembly 10 is driven by the synchronous belt 19 to perform a linear reciprocating movement along the vertical guide rail 4 to fold the wrapping paper on the front and rear top surfaces to the front and rear sides of the cube. When the upper folding assembly 10 moves to Stay at the maximum stroke position for a short period of time to strengthen the folding effect of the paper (state I-state L in the figure).

After the upper folding assembly 10 is reset, the two left and right folding plates 9 are driven by the left and right crank linkage mechanism 13 and the bearing slider 6 to perform a linear reciprocating movement along the other horizontal guide rail 5 at the same time to fold the wrapping paper on the front and rear sides. To the front and rear sides of the cube, when the two left and right folding plates 13 move to the maximum stroke position, they stay for a short period of time to strengthen the folding effect of the paper (state M-state O in the figure), and then the screw motor mechanism 14 works to drive The pressing plate 16 moves up to the initial position P. At this point, the machine completes all packaging processes, and the trough workbench 2 and the wrapped cubes can be retrieved manually.

After the utility model is implemented, the creases of the packaged object are clear and obvious, the whole is exquisite and beautiful, and the packaging effect is basically consistent with that of ordinary manual packaging.

The above-mentioned specific embodiments are used to explain the utility model, rather than to limit the utility model. Within the spirit of the utility model and the scope of protection of the claims, any modifications and changes made to the utility model fall into the scope of the utility model. scope of protection.

Claims (10)

1. A folding wrapping paper wrapping equipment, characterized in that it includes a frame (1), a screw motor mechanism (14), an up and down folding movement mechanism, a rear bracket mechanism, a rear motor movement mechanism and a left and right folding movement mechanism; The center of the frame (1) is horizontally equipped with a workbench mechanism, one side of the workbench mechanism is installed with a screw motor mechanism (14) for top surface compression, and the other side of the workbench mechanism is installed with a The up and down folding movement mechanism; the workbench mechanism includes a trough-type workbench (2), and the center of the frame (1) is fixed with two long guide rails (3) arranged in parallel horizontally, and the trough-type workbench (2) is U-shaped. The bottom of the trough workbench (2) is sleeved on the long guide rails (3) through a sliding sleeve and moves along the long guide rails (3). Near both ends of the two long guide rails (3) are equipped with trough workbenches (2) The limit clip (7) for moving the limit; the frame (1) behind the workbench mechanism is equipped with a rear bracket mechanism, and the rear bracket mechanism is equipped with two rear motor movement mechanisms for top surface wrapping and for left and right The two left and right folding motion mechanisms wrapped on both sides, the rear motor motion mechanism and the left and right folding motion mechanisms are all along the horizontal direction perpendicular to the long guide rail (3) of the workbench mechanism. 2. A folding wrapping paper wrapping device according to claim 1, characterized in that: the rear support mechanism includes a rear motor fixing plate (22), two rear motor support plates (23) and an upper horizontal The guide rail assembly and the lower horizontal guide rail assembly, a rear motor support plate (23) is installed on both sides of the rear motor fixing plate (22), and an upper horizontal guide rail assembly arranged in parallel up and down is installed between the two rear motor support plates (23) As with the lower horizontal guide rail assembly, the upper horizontal guide rail assembly and the lower horizontal guide rail assembly have the same structure, including two horizontal guide rails (5) installed in parallel up and down, and the two horizontal guide rails (5) are vertical to the long guide rail (3). In the horizontal direction, both ends of the two horizontal guide rails (5) pass through the frame (1) and are fixedly connected to the rear motor support plate (23); two rear motor movement motors with the same structure are installed symmetrically on both sides of the upper horizontal guide rail assembly. mechanism, two left and right folding motion mechanisms with the same structure are symmetrically installed on both sides of the lower horizontal guide rail assembly. 3. A folding wrapping paper wrapping device according to claim 2, characterized in that: the rear motor movement mechanism includes a top motor (37), a top crank linkage mechanism (12) and a rear motor The bearing slider (6), the top motor (37) is fixedly installed on the rear motor fixing plate (22), and the rear motor bearing slider (6) is sleeved on the upper edge of the two horizontal guide rails (5) of the upper horizontal guide rail assembly. The guide rail (5) moves, the output shaft of the top motor (37) passes through the rear motor fixing plate (22) and connects with the rear part of the rear motor bearing slider (6) through the top crank linkage mechanism (12), and the rear motor bearing The front portion of the slide block (6) is fixedly connected with a top surface folding plate (8). 4. A folding wrapping paper wrapping device according to claim 2, characterized in that: the left and right folding movement mechanism includes left and right motors (38), left and right crank linkage mechanisms (13) and left and right motor bearing slides block, the left and right motors (38) are fixedly installed on the rear motor fixing plate (22), the bearing sliders of the left and right motors are sleeved on the two horizontal guide rails (5) of the lower horizontal guide rail assembly and move along the horizontal guide rails (5), and the left and right motors (38 ) passes through the rear motor fixing plate (22) and is connected to the rear of the left and right motor bearing sliders through the left and right crank linkages (13), and the front parts of the left and right motor bearing sliders are fixedly connected by a support rod for wrapping Two left and right folding plates (9) on the left and right sides are respectively located on the front and rear sides of the trough-type workbench (2). 5. A folding wrapping paper wrapping device according to claim 1, characterized in that: the up and down folding movement mechanism: includes a fixed block (21), an upper motor bracket (15) and a lower motor bracket (17 ), between the upper motor bracket (15) and the lower motor bracket (17) are installed two vertical guide rails (4) installed in parallel front and back, and the fixed block (21) is fixedly sleeved in the middle of the vertical guide rail (4) to fix the vertical guide rail ( 4) It is divided into the upper half and the lower half. The upper motor bearing slider and the lower motor bearing slider are respectively set on the upper half and the lower half of the vertical guide rail (4) and move up and down along the vertical guide rail (4); fixed The upper and lower ends of the block (21) are equipped with a vertical bearing seat (20), and the vertical bearing seat (20) is equipped with a transmission shaft (41) through the bearing; on the upper motor support (15) and the lower motor support (17), respectively An upper motor (39) and a lower motor (40) are installed, and the output shafts of the upper motor (39) and the lower motor (40) are respectively connected with the drive shaft (41) belts at the upper and lower ends of the fixed block (21) through a synchronous belt (19) The upper motor bearing slide block and the lower motor bearing slide block are fixedly linked with respective synchronous belts (19) through the fixing piece (32), and the upper motor bearing slide block and the lower motor bearing slide block are respectively installed with upper and lower side wrapping The folding assembly (10) and the lower folding assembly (11), the upper folding assembly (10) and the lower folding assembly (11) have the same structure and are installed symmetrically. 6. A folding wrapping paper wrapping device according to claim 5, characterized in that: the upper motor bracket (15) and the lower motor bracket (17) have the same structure, and the upper motor bracket (15) includes The upper motor fixing plate (24) and the upper motor support plate (25) are fixedly connected in L shape, the upper motor fixing plate (24) is horizontally fixed on the frame (1), and the upper motor (39) is installed on the upper motor fixing plate (24 )superior. 7. A folding wrapping paper wrapping device according to claim 5, characterized in that: the upper folding assembly (10) includes two identical folding plates (33), two short rods (34) , the long rod (35) and the connecting rod (36), the upper motor bearing slider is fixedly connected to one end of the connecting rod (36), the other end of the connecting rod (36) is fixedly connected to the middle part of the long rod (35), and the long rod The two ends of (35) are respectively connected to two folded plates (33) via short rods (34), and the two folded plates (33) are respectively positioned at the front and back sides of the trough-type workbench (2). 8. A folding wrapping paper wrapping device according to claim 1, characterized in that: the screw motor mechanism (14) includes a screw, a motor and a pressing plate (16), and the motor is fixedly installed on the frame (1), the output shaft of the motor goes upwards and is fixedly connected with the lead screw. The lead screw is covered with a slide table, which moves up and down along the lead screw. The slide table is connected to the pressure plate (16) through the support rod. The pressure plate (16) is located on directly above the trough table (2). 9. A folding wrapping paper wrapping device according to claim 1, characterized in that: the top crank linkage mechanism (12) has the same structure as the left and right crank linkage mechanisms (13), both of which include cranks (26), connecting rod (27), rotating shaft (28) and spacer (29), crank (26), connecting rod (27) are hinged by rotating shaft (28), and spacer (29) is housed at the joint, crank ( 26) Connect the output shaft of the motor, and the connecting rod (27) is connected with the end of the bearing slider. 10. A folding wrapping paper wrapping device according to claim 1, characterized in that: the fixed block (21) includes a front cover (30) and a rear cover (31), and the vertical guide rail is tightened and installed on between the front cover (30) and the rear cover (31).