CN111361208A - Top cover forming equipment - Google Patents

Abstract

The invention discloses a canopy forming equipment, which is used for forming a material plate. The material plate includes a main body and edges to be bent connected around the main body, and includes a material pulling unit, a material loading unit, a mold unit, a forming guide unit and a bevelling unit. unit; the feeding unit is used to receive the material plate to be formed, and move the material plate from the feeding end to the discharging end; the material loading unit is adjacent to the discharging end, and the material loading unit is used to carry the material plate; the mold unit is located in Just above the loading unit, the mold unit has a liftable die head; a plurality of forming guide units are located around the loading unit and adjacent to the loading unit; the cornering unit is located at the four corners of the loading unit, and is adjacent to the loading unit. The material units are adjacent. According to the canopy forming equipment provided by the present invention, the material plate is bent and formed through the cooperation of the material loading unit, the mold unit and the forming guide unit, and the tape is connected by the cornering unit, the forming process is simple and accurate, and the forming process is greatly improved. Efficient and has good molding results.

Description

A canopy forming equipment

technical field

The invention relates to the technical field of packaging box forming machinery, in particular to a canopy forming equipment.

Background technique

Cartons are widely used in the packaging field, among which the Tiandi Lid carton is a kind of carton widely used in the production and packaging. During the folding and forming process of the existing canopy carton packaging, most of the manual operations are performed, that is, the long side and the short edge of the paper material are folded in turn by hand to form the canopy. Manual operation is not only inefficient, improper operation can easily damage the canopy, and labor costs are high.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a canopy forming equipment to solve the problems of low manual operation efficiency, easy damage to the canopy and high labor cost.

For achieving the above object, the technical scheme proposed by the present invention is as follows:

A canopy forming equipment is used for forming a material plate, the material plate includes a main body and a to-be-bent edge connected around the main body, comprising:

a feeding unit, the feeding unit has a feeding end and a discharging end, the feeding unit is used for receiving the material plate to be formed, and moving the material plate from the feeding end to the discharging end;

a loading unit, the loading unit is adjacent to the discharging end, and the loading unit is used for carrying a material plate;

A mold unit, the mold unit is located just above the material carrier unit, the mold unit has a liftable mold head, and the material carrier unit is pressed below, the shape and size of the bottom surface of the mold head and the shape and size of the material plate body same;

A forming guide unit, a plurality of the forming guide units are located around the material carrier unit and adjacent to the material carrier unit, and the inner contour enclosed by the plurality of the forming guide units is the same as the shape and size of the main body of the material plate;

A corner punching unit, the corner punching unit is located at the four corners of the loading unit and adjacent to the loading unit, and the corner punching unit is used for sticking the tape on the adjacent side walls of the canopy after forming Junction.

According to the canopy forming equipment provided by the present invention, the material plate is bent and formed through the cooperation of the material loading unit, the mold unit and the forming guide unit, and the tape is connected by the cornering unit. The forming process is simple and accurate, and the forming process is greatly improved. Efficient and has good molding results.

In addition, the canopy forming equipment according to the above embodiments of the present invention may also have the following additional technical features:

According to an example of the present invention, the dialing unit includes a worktable, a dialing block and a first driving mechanism;

The plurality of rows of the dials are installed on the workbench at intervals;

The first driving mechanism is connected with the dial and can drive the dial to move.

According to an example of the present invention, the loading unit includes a loading platform, a suction cup, a negative pressure device, a supporting cylinder and a guiding device;

The shape and size of the carrier are the same as the shape and size of the material plate main body;

The suction cup is mounted on the carrier and connected with the negative pressure device;

The supporting cylinder includes a cylinder body and a piston rod, the cylinder body is connected with the carrier, the cylinder body is mounted on the guide device, and can be lifted and lowered on the guide device; one end of the piston rod is connected to the guide device. The cylinder body is connected, and the other end is fixed; the cylinder body can be pressed down by the die head to the first position, and can drive the material plate to rise to the second position after being pressed down.

According to an example of the present invention, the loading unit further includes a connecting plate and a shock absorber;

The connecting plate is located under the carrier and is connected with the cylinder, and the connecting plate and the carrier are connected through the shock absorber.

According to an example of the present invention, the mold unit includes a second drive mechanism and an adjustment device connected in sequence;

The second driving mechanism is used to drive the adjusting device and the die head to rise and fall;

The adjusting device is used for adjusting the horizontal position of the die head.

According to an example of the present invention, the adjusting device includes a first adjusting plate, a second adjusting plate, a first connecting member and a second connecting member;

The first adjusting plate is connected with the second driving mechanism, the first adjusting plate is provided with a first connecting hole, and the first connecting piece is respectively connected with the first connecting hole and the second adjusting plate , and the first connecting piece can move along the length direction of the first connecting hole;

The second adjusting plate is provided with a second connecting hole, the second connecting piece is respectively connected with the second connecting hole and the die head, and the second connecting piece can be along the direction of the second connecting hole. moving in the length direction;

Wherein, the length direction of the first connection hole is perpendicular to the length direction of the second connection hole.

According to an example of the present invention, the forming guide unit includes a guide bar; a side of the guide bar close to the loading unit is provided with a guide edge extending in a vertical direction.

According to an example of the present invention, the forming guide unit further includes a third driving mechanism; the third driving mechanism is connected with the guide bar through an elastic member, and the third driving mechanism is used to drive the guide bar to approach or away from the loading unit.

According to an example of the present invention, a limit edge is formed at the lower part of the guide edge, the limit edge is perpendicular to the guide edge, and is located on a side of the guide edge away from the loading unit.

According to an example of the present invention, the cornering unit includes a frame, a belt conveying mechanism, a fourth driving mechanism and a cornering member;

The belt conveying mechanism and the fourth driving mechanism are mounted on the frame, and the fourth driving mechanism is located below the belt conveying mechanism;

The cornering piece is connected with the fourth driving mechanism, and the cornering piece approaches or moves away from the loading unit under the driving of the fourth driving mechanism, and the cornering piece is used to break the tape. And stick the tape to the junction of the adjacent side walls of the molded post-canopy.

Advantages of the above additional aspects will be set forth in part, and in part will become apparent from the following description, or may be learned by practice of the invention.

Description of drawings

1 is a schematic structural diagram of a canopy forming device according to an embodiment of the present invention;

FIG. 2 is a partial structural schematic diagram (1) of the canopy forming equipment according to the embodiment of the present invention;

Fig. 3 is the partial structural schematic diagram (2) of the canopy forming equipment according to the embodiment of the present invention;

FIG. 4 is a partial structural schematic diagram (3) of the canopy forming equipment according to the embodiment of the present invention;

5 is a schematic structural diagram of a forming guide unit of a canopy forming apparatus according to an embodiment of the present invention;

Fig. 6 is the side view of Fig. 5;

7 is a schematic structural diagram of a loading unit of a canopy forming apparatus according to an embodiment of the present invention;

8 is a schematic diagram of the connection between the carrier and the connecting plate of the canopy forming equipment according to the embodiment of the present invention;

Fig. 9 is the structural schematic diagram of the cornering unit of the canopy forming equipment according to the embodiment of the present invention;

FIG. 10 is a schematic structural diagram of the corner piece of the canopy forming equipment according to the embodiment of the present invention in the corner position;

FIG. 11 is a positional relationship diagram of the cornering unit, the forming guide unit and the material loading unit of the canopy forming equipment according to the embodiment of the present invention.

In the accompanying drawings, the list of components represented by each number is as follows:

1. Dial unit; 11. Workbench; 12. Dial block;

2. Loading unit; 21. Loading table; 22. Suction cup; 23. Negative pressure device; 24. Supporting cylinder; 241. Cylinder block; 242. Piston rod; 25. Guiding device; 26. Connecting plate; 27. Suspension piece;

3. Mold unit; 31. Die head; 32. Second drive mechanism; 33. Adjustment device; 331, First adjustment plate; 332, Second adjustment plate; 333, First connector; 334, Second connector; 335, the first connection hole; 336, the second connection hole;

4. Forming guide unit; 41, guide strip; 42, third drive mechanism; 43, limit edge; 44, elastic part;

5. Cornering unit; 51. Frame; 52. Belt conveying mechanism; 53. Fourth driving mechanism; 54. Cornering piece;

6. Auxiliary pressing unit; 61. Beam; 62. Mounting hole;

7. Material plate.

Detailed ways

The principles and features of the present invention will be described below with reference to the accompanying drawings. The examples are only used to explain the present invention, but not to limit the scope of the present invention.

Referring to Figures 1-4, the present embodiment provides a canopy forming equipment for forming a material plate into a packaging canopy. The material plate 7 includes a main body and a to-be-bent edge connected around the main body. Based on the background technology The inventor found that, even if there are existing mechanical equipment capable of forming a canopy, it is not only complicated in structure, complicated in bending and forming procedures, bulky, and not much more efficient than manual operation, so this embodiment proposes a The new canopy forming equipment is designed to simplify the forming structure, optimize the forming process, and improve the forming accuracy and efficiency.

The canopy forming equipment in this embodiment includes specific functional parts such as a feeding unit 1, a loading unit 2, a mold unit 3, a forming guide unit 4 and a cornering unit 5. The feeding unit 1 in this embodiment has a feeding end and a At the discharging end, the feeding unit 1 is used to receive the material plate 7 to be formed, and move the material plate 7 from the feeding end to the discharging end.

The loading unit 2 of this embodiment is adjacent to the discharge end, the loading unit 2 is used to carry the material plate 7, and the loading unit 2 can perform a descending action under the pressure of the die head 31 of the mold unit 3, and the loading unit 2 can perform a downward movement under the pressure of the die head 31 of the die unit 3. After completion, it can also be raised to the receiving position. It should be noted that, due to the blocking of other structures, the loading unit 2 is not shown in Figures 1-4 of this embodiment, and the structure of the loading unit 2 is given in Figure 7 .

The mold unit 3 of this embodiment is located directly above the material carrier unit 2, and the mold unit 3 has a mold head 31 that can be raised and lowered, and the above-mentioned material carrier unit 2 is pressed down. The shape and size of the bottom surface of the mold head 31 is the same as that of the main body of the material plate 7 .

As shown in FIG. 11 , the multiple forming guide units 4 in this embodiment are located around the loading unit 2 and are adjacent to the loading unit 2 . The number of the forming guide units 4 can be determined according to the design requirements. Two forming guide units 4 are arranged on the long sides of the material unit 2, and one forming guide unit 4 is arranged on the short sides of the material loading unit 2. The inner contour enclosed by the plurality of forming guide units 4 and the material plate 7 The shape and size of the main bodies of the two are the same, so that during the process of the die head 31 lowering the ballast material unit 2, the to-be-formed edge of the material plate 7 can be bent through the limit and guide of the guide unit.

11, the cornering unit 5 of this embodiment is located at the four corners or four diagonal corners of the loading unit 2, and is adjacent to the loading unit 2, and the cornering unit 5 is used to The tape is pasted at the junction of the adjacent side walls of the post-formed canopy to connect and reinforce the canopy to prevent the sidewalls of the canopy from being reset after being bent.

The canopy forming equipment with the above structure realizes the bending and forming of the material plate 7 through the cooperation of the material loading unit 2, the mold unit 3 and the forming guide unit 4, and is then connected by the tape through the cornering unit 5. The molding efficiency is improved and the molding effect is good.

The specific structures of the above functional units implemented in the present embodiment are described and exemplified below, so that those skilled in the art can better understand the above solutions of the present embodiment.

As shown in Figures 1 and 2 , the dialing unit 1 of this embodiment includes a worktable 11, a dial 12 and a first driving mechanism (not shown in the figure); the number of dials 12 in this embodiment can be as many as possible and multiple rows of dial blocks 12 are installed on the workbench 11 at intervals. The first drive mechanism in this embodiment is connected to the dial blocks 12 and can drive the dial blocks 12 to move. Specifically, it can drive the dial blocks 12 in the horizontal and vertical directions. It can move in the straight direction, or can drive the dial block 12 to rotate, that is, the dial block 12 has two degrees of freedom of movement. Therefore, the first driving mechanism in this embodiment can include conventional driving devices such as air cylinders and motors.

Based on the above-mentioned structure of the material removal unit 1, in order to prevent the phenomenon of warping during the movement of the material plate 7, the canopy forming apparatus of this embodiment further includes an auxiliary pressing unit 6, and the auxiliary pressing unit 6 includes The upper beam 61, and a number of installation holes 62 are opened on the beam 61. Balls are installed in the installation holes 62. Friction does not affect the movement of the sheet 7 .

As shown in FIG. 7 , the loading unit 2 of this embodiment includes a carrier 21 , a suction cup 22 , a negative pressure device 23 , a support cylinder 24 and a guide device 25 . In order to ensure the molding effect, the shape of the carrier 21 in this embodiment is The size is the same as the shape and size of the main body of the material plate 7, so that the receiving tray and the die head 31 can press the main body of the material plate 7 during the press-fitting process, so that the edges to be bent around the material plate 7 can be along the material receiving plate 7. The disc and die head 31 and the forming guide unit 4 are bent.

The suction cup 22 of this embodiment is installed on the carrier 21 and connected with the negative pressure device 23 to improve the stability of the receiving tray during the ascending and descending process.

In order to realize the passive descending and active ascending of the carrier 21, this embodiment optimizes the structure and installation method of the support cylinder 24. The support cylinder 24 in this embodiment includes a cylinder block 241 and a piston rod 242, and the cylinder block 241 and the carrier 21 Connected, the cylinder 241 is installed on the guide device 25. Under the pressing action of the die head 31, the cylinder 241 overcomes the air pressure and can rise and fall along the vertical direction on the guide device 25; one end of the piston rod 242 is connected to the cylinder 241. connected, the other end is fixed to play a supporting role; the above-mentioned structural cylinder 241 can be pressed down to the first position by the die head 31, at this time the material plate 7 is bent and formed into a sky cover, and can drive the material plate 7 after pressing down Raise to the second position (feed position).

As shown in FIG. 8 , preferably, in order to prevent the material plate 7 from being damaged due to excessive downward pressure on the die head 31 , the material loading unit 2 in this embodiment further includes a connecting plate 26 and a shock absorber 27 ; 26 is located below the carrier 21 and is connected to the cylinder 241. The connecting plate 26 is connected to the carrier 21 through a shock absorber 27. The shock absorber 27 can be a spring or other structure with a certain buffering effect, and the shock absorber 27 buffers the mold. Head 31 pressure.

1 and 4, the mold unit 3 of this embodiment includes a second driving mechanism 32 and an adjusting device 33 connected in sequence. The second driving mechanism 32 is used to drive the adjusting device 33 and the mold head 31 to rise and fall. The driving mechanism 32 may include an air cylinder or a motor and a rack-and-pinion structure as shown in the figure, as long as it can drive the die head 31 to move back and forth up and down.

In order to make the position of the mold head 31 adjustable to ensure that the mold head 31 is in the best working position, the above-mentioned adjusting device 33 is designed in this embodiment. The adjusting device 33 is used to adjust the horizontal position of the mold head 31. The structure is not unique. The adjusting device 33 in this embodiment preferably includes a first adjusting plate 331 , a second adjusting plate 332 , a first connecting member 333 and a second connecting member 334 .

The first adjusting plate 331 is connected with the second driving mechanism 32, the first adjusting plate 331 is provided with a first connecting hole 335, the first connecting member 333 is respectively connected with the first connecting hole 335 and the second adjusting plate 332, and the third adjusting plate 331 is provided with a first connecting hole 335. A connecting piece 333 can move along the length direction of the first connecting hole 335; the second adjusting plate 332 is provided with a second connecting hole 336, the second connecting piece 334 is respectively connected with the second connecting hole 336 and the die head 31, and the second The connection piece 334 can move along the length direction of the second connection hole 336 ; and the length direction of the first connection hole 335 is perpendicular to the length direction of the second connection hole 336 .

Specifically, the above-mentioned connecting pieces can be bolts, and the bolts are closely matched with the first connecting hole 335 and the second connecting hole 336. The above-mentioned adjusting device 33 can adjust the position of the die head 31 in two directions, which is not only convenient for adjustment , and the structure is simple.

5 and 6, the forming guide unit 4 of this embodiment includes a guide bar 41; the side of the guide bar 41 close to the loading unit 2 is provided with a guide edge extending in the vertical direction, which is pressed down on the die head 31. During the process, the four sides of the material plate 7 are bent inward through the guide and limit of the guide edge.

In order to facilitate molding, the molding guide unit 4 of this embodiment further includes a third driving mechanism 42 ; the third driving mechanism 42 is connected to the guide bar 41 , and the third driving mechanism 42 is used to drive the guide bar 41 to approach or move away from the loading unit 2 . , and a certain logic control needs to be performed on each forming guide unit 4 in this embodiment, that is, the action of each third driving mechanism 42 is controlled by the controller,

This design is because the short side of the material plate 7 is bent first, and then the long side is bent during the canopy forming process. The forming effect is good and easy to form. Therefore, through the control of the controller to the third driving mechanism The guide bar 41 near the short side of the material plate 7 is extended to the working position, and the guide bar 41 located on the long side of the material plate 7 is retracted. The guide bar 41 on the long side of the material plate 7 extends to the working position, thereby completing the entire bending operation.

Preferably, in the dematerializing process after forming, in order to prevent the mold head 31 from disturbing the formed canopy during the ascending process, causing the canopy to separate from the desorption stage 21, in this embodiment, a limited edge is also formed at the lower part of the guide edge. 43. The limit edge 43 is perpendicular to the guide edge, and is located on the side of the guide edge away from the loading unit 2. When the mold is pressed down to a certain position, the limit edge 43 can jam the side wall of the canopy, preventing the canopy from following The die head 31 goes up.

More preferably, in order to prevent the guide bar 41 from affecting the ascending or descending of the die head 31 , the third driving mechanism 42 in this embodiment is connected with the guide bar 41 through an elastic member 44 which may be a spring.

9 and 10, the cornering unit 5 of this embodiment includes a frame 51, a belt conveying mechanism 52, a fourth driving mechanism 53 and a cornering member 54; the belt conveying mechanism 52 and the fourth driving mechanism of this embodiment The mechanism 53 is installed on the frame 51, and the fourth drive mechanism 53 is located under the tape conveying mechanism 52; ) to convey the tape to the corner piece 54 in FIG. 10 .

The cornering member 54 in this embodiment is connected to the fourth driving mechanism 53 , and the cornering member 54 is driven by the fourth driving mechanism 53 to approach or move away from the loading unit 2 , and the cornering member 54 in FIG. 10 is located close to the loading unit 2 . At the position of unit 2, before the tape reaches its front, the cornering member 54 of this embodiment is retracted into the frame 51 through the fourth driving mechanism 53. When cornering is required, the tape conveying mechanism 52 conveys the tape. To the front of the corner piece 54, then the corner piece 54 is extended, the tape is pulled off, and the tape is pasted to the junction of the adjacent side walls of the canopy after forming, and retracted after the pasting task is completed.

The specific working process of the canopy forming equipment of the present embodiment is described below:

During processing, place the material plate 7 on the material removal unit 1, the material removal unit 1 transports the material plate 7 to the material loading unit 2, the suction cup 22 on the material loading unit 2 adsorbs and fixes the material plate 7, and then starts the mold unit 3 , the die head 31 presses the material plate 7 and the carrier 21 down. During the descending process of the material plate 7, its surrounding edges are limited by the guide strip 41, and the bending is realized along the limit position of the guide strip 41, and the The canopy is pressed down to a certain position, so that the limiting edges 43 of the guide strips 41 limit the canopy; and then the cornering unit 5 is used to affix the tape to the hinges of the two adjacent side walls of the canopy after forming, and the canopy is completed. forming job.

Then, lift the die head 31 and release the limit of the canopy by the guide strip 41, and then raise the carrier 21 to lift the formed canopy to the initial position, release the adsorption of the canopy on the carrier 21, and then complete the removal of the material .

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, Rather than indicating or implying that the device referred to must have a particular orientation, be constructed and operate in a particular orientation, it should not be construed as limiting the invention.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first" or "second" may expressly or implicitly include one or more of that feature. In the description of the present invention, "plurality" means two or more, unless otherwise expressly and specifically defined.

In the present invention, unless otherwise expressly specified and limited, terms such as "installation", "connection" and "connection" should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integrated Wait. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

Although the embodiments of the present invention have been shown and described above, it should be understood that the above-mentioned embodiments are exemplary and should not be construed as limiting the present invention. Embodiments are subject to variations, modifications, substitutions and variations.

Claims (10)

1. The utility model provides a canopy former for the flitch shaping, the flitch includes the main part and connects in the main part hem of waiting to bend all around, its characterized in that includes:

the material stirring unit is provided with a feeding end and a discharging end and is used for bearing a material plate to be molded and moving the material plate from the feeding end to the discharging end;

the material loading unit is adjacent to the discharge end and is used for loading a material plate;

the die unit is positioned right above the material loading unit, the die unit is provided with a liftable die head for pressing the material loading unit downwards, and the shape and the size of the bottom surface of the die head are the same as those of the flitch main body;

the molding guide units are positioned around the material loading unit and are adjacent to the material loading unit, and the inner contour formed by the enclosing of the molding guide units is the same as the shape and size of the main body of the flitch;

and the corner hitting unit is positioned at four corners of the material loading unit and is adjacent to the material loading unit, and the corner hitting unit is used for sticking an adhesive tape at the joint of the adjacent side walls of the molded canopy.

2. The canopy forming apparatus of claim 1, wherein the kickoff unit comprises a table, a kickoff block, and a first drive mechanism;

a plurality of rows of shifting blocks are arranged on the workbench at intervals;

the first driving mechanism is connected with the shifting block and can drive the shifting block to move.

3. The canopy molding apparatus according to claim 1, wherein the carrier unit includes a carrier, a suction cup, a negative pressure device, a support cylinder, and a guide device;

the shape and the size of the carrying platform are the same as those of the flitch main body;

the sucking disc is arranged on the carrying platform and is connected with the negative pressure device;

the supporting cylinder comprises a cylinder body and a piston rod, the cylinder body is connected with the carrying platform, and the cylinder body is arranged on the guide device and can be lifted on the guide device; one end of the piston rod is connected with the cylinder body, and the other end of the piston rod is fixed; the cylinder body can be pressed down to a first position by the die head, and can drive the flitch to ascend to a second position after being pressed down.

4. The canopy molding apparatus according to claim 3, wherein the loading unit further comprises a connecting plate and a shock absorber;

the connecting plate is located below the carrying platform and connected with the cylinder body, and the connecting plate is connected with the carrying platform through the shock absorbing part.

5. The canopy molding apparatus according to claim 1, wherein the mold unit includes a second driving mechanism and an adjusting device connected in series;

the second driving mechanism is used for driving the adjusting device and the die head to lift;

the adjusting device is used for adjusting the horizontal position of the die head.

6. The canopy forming apparatus according to claim 5, wherein the adjusting means includes a first adjusting plate, a second adjusting plate, a first connecting member and a second connecting member;

the first adjusting plate is connected with the second driving mechanism, the first adjusting plate is provided with a first connecting hole, the first connecting piece is respectively connected with the first connecting hole and the second adjusting plate, and the first connecting piece can move along the length direction of the first connecting hole;

the second adjusting plate is provided with a second connecting hole, the second connecting piece is respectively connected with the second connecting hole and the die head, and the second connecting piece can move along the length direction of the second connecting hole;

the length direction of the first connecting hole is perpendicular to the length direction of the second connecting hole.

7. The canopy forming apparatus according to claim 1, wherein the forming guide unit includes a guide bar; one side of the guide strip, which is close to the material loading unit, is provided with a guide edge extending in the vertical direction.

8. The canopy molding apparatus according to claim 7, wherein the molding guide unit further includes a third driving mechanism; the third driving mechanism is connected with the guide strip through an elastic piece and used for driving the guide strip to be close to or far away from the loading unit.

9. The canopy forming apparatus according to claim 7, wherein a limiting edge is formed at a lower portion of the guiding edge, and the limiting edge is perpendicular to the guiding edge and located at a side of the guiding edge away from the loading unit.

10. The canopy forming apparatus of claim 1, wherein the chamfering unit comprises a frame, a tape conveying mechanism, a fourth driving mechanism, and a chamfering member;

the adhesive tape conveying mechanism and the fourth driving mechanism are arranged on the rack, and the fourth driving mechanism is positioned below the adhesive tape conveying mechanism;

the corner-making piece is connected with the fourth driving mechanism, driven by the fourth driving mechanism, the corner-making piece is close to or far away from the material carrying unit, and the corner-making piece is used for breaking an adhesive tape and adhering the adhesive tape to a joint of adjacent side walls of the molded top cover.

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